CN1873228A - A gear pump - Google Patents
A gear pump Download PDFInfo
- Publication number
- CN1873228A CN1873228A CNA2006100467300A CN200610046730A CN1873228A CN 1873228 A CN1873228 A CN 1873228A CN A2006100467300 A CNA2006100467300 A CN A2006100467300A CN 200610046730 A CN200610046730 A CN 200610046730A CN 1873228 A CN1873228 A CN 1873228A
- Authority
- CN
- China
- Prior art keywords
- pump
- gear
- driven gear
- stainless steel
- driving
- 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
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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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
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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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
- F05C2201/046—Stainless steel or inox, e.g. 18-8
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to a gear pump for conveying pulpy food raw material. It includes pump body, pump cover and a pair of meshed driving gear and driven gear which are assembled in the pump body interior. It is technically characterized by that said driving gear and driven gear are made up by using stainless steel material or stainless steel powder metallurgy material, on every end face of two end faces of every gear an O-ring seal is set, so that the gaps between two end faces of driving gear and driven gear and pump body and pump cover can be respectively filled up with O-ring seals.
Description
Technical field
The present invention relates to a kind of transfer pump, particularly a kind of gear pump that is suitable for carrying the raw-food material slurries also can transferring oil or other fluid.
Background technique
At present, some raw-food material as the conveying of ice cream slurries, need hybrid process under certain pressure be made slurries and air, therefore need realize by gear pump class transfer pump.But not only will meet food hygienic standard as the gear pump of carrying raw-food material, and want can adapt to that the similar fine sand grain of conveying is composite has certain corrosive slurry fluids, therefore, gear pump need have good wear resistance energy and decay resistance.Because the pressure of the high more pump output of the seal degree of pump is also just big more, so when the design gear pump, in order to realize the needed pressure of gear pump, must be with the gap design between gear and the gear pump body very little, to improve its sealability, could realize the delivery pressure requirement of pump, this has just produced its operation friction problem under closely cooperating inevitably in non-oleaginous fluid.For adapting to operation friction needs under this closely cooperating, existing gear pump is generally by the pump housing and forward and backward pump cover and assemble pair of engaged gears formation in it.Usually the sealability that improves pump is to adopt to cover the way that Sealing is set or skeleton Sealing is set by the insert sliding sleeve at front and back ends before bearing and realize.Its pump housing material therefor adopts the stainless steel material casting to form mostly, and gear material adopts copper-based alloy material or nonmetallic material to make.This gear pump not only structure is numerous and diverse, replacing Sealing trouble, and the gear decay resistance that its copper-based alloy material is made is bad, and the gear wear-resisting property that nonmetallic material are made is poor, working life is all very short, can't satisfy the operation friction needs of gear pump under closely cooperating.If the gear that is assembled in the stainless steel pump housing also adopts stainless steel uniform wearability energy and all good steel material of decay resistance to make, the gear of working in the raw-food material slurries just can not produce oil film to reduce friction between the gear and the pump housing as the gear pump of working in the oils medium so.During because of the said gear pump work, the gear of high speed rotating is easy to cause the friction between the same metal on gear face and pump housing surface, so noise can take place, causes the pump housing to scratch, even the accident of the metallic dust contaminated food products that can wear and tear.Therefore, how to improve the sealability and the working life of food machinery gear pump, all be that people want to solve and insoluble problem all the time.
Summary of the invention
The purpose of this invention is to provide a kind of gear pump, it has solved hard nut to cracks such as complex structure, the sealing of existing gear pump are poor, end face friction, has reasonable in design, reduce production costs, increase the delivery pressure of pump, improve the sealability of pump and wear-resisting property, the decay resistance of gear, the working life of significant prolongation pump.
The object of the present invention is achieved like this: this device comprises the pump housing and pump cover and assembles the driving and driven gear of the pair of meshing in it, its technological points is: adopt two end faces of the driving and driven gear that stainless steel material or stainless steel powder metallurgy material make to be provided with respectively and the concentric O-ring seals of axis of gear shaft separately, and make O-ring seals distinguish two end faces of filling driving gear and driven gear and the gap between the pump housing.
Because the present invention is improved on the architecture basics of existing gear pump, the master of this pump, driven gear adopts stainless steel material or stainless steel powder metallurgy material to make, two end faces of each gear are provided with respectively and the concentric O-ring seals of axis of gear shaft separately, and make O-ring seals respectively two end faces and the pump housing of filling driving gear and driven gear, gap between the pump cover, so reasonable in design, can make the O-ring seals and the pump housing, the surface contact of pump cover seals, thereby the gear face and the pump housing have been avoided, the directly contact of pump cover surface, prevented from the friction that produces between the same metal to have realized the gear face and the pump housing, pump cover surface dynamically gap-free sealed.But frictional loss because of the elasticity automatic compensation sealing circle of seal ring, seal ring is cheap, and be convenient to change, so can reach when reducing production costs, increase the purpose of the delivery pressure of pump, thereby the sealability of pump and wear-resisting property, the decay resistance of gear have been improved, the working life of significant prolongation pump.Therefore, the present invention has fundamentally solved hard nut to cracks such as complex structure, the sealing of existing gear pump are poor, end face friction, provides a kind of desirable conveying to have the gear pump of certain corrosive slurry fluids.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of split structural representation of the present invention.
Fig. 2 is a kind of assembly structure schematic representation of the present invention.
Fig. 3 is the side view of Fig. 1.
Sequence number explanation among the figure: 1 Simmer ring, 2 pump housings, 3 overflow holes, 4 driving gears, 5 driven gears, 6O shape seal ring, 7 pump glands, 8 pump covers, 9 discharge ports, 10 seal rings, 11 discharging joints, 12 tightening nuts, 13 rubber stoppers, 14 discharge nozzles, 15 pressure-stabilizing springs, 16 seal rings, 17 suction tubes, 18 opening locating studs, 19 oil-impregnated bearings (powder metallurgy), 20 oil-impregnated bearings (powder metallurgy), 21, driven shaft; 22 alignment pin, 23, overflow hole, 24 cotter pins, 25 intake ports.
Embodiment
Describe concrete structure of the present invention in detail according to Fig. 1-3.This device comprises the pump housing 2 and pump cover 8 and assembles parts such as the driving gear 4 of the pair of meshing in it, driven gear 5, relief valve.Wherein driving and driven gear 4,5 adopts stainless steel material or stainless steel powder metallurgy material to make, and its specifications and models are determined according to actual needs.The structure and the existing gear pump of parts such as the pump housing 2, pump cover 8 and tightening nut 12 thereof, Simmer ring 1, pump gland 7, discharge nozzle 14 and relief valve are basic identical.Relief valve is assembled by parts such as rubber stopper 13, pressure-stabilizing spring 15, seal ring 16, suction tubes 17.The formed seal container of pump chamber between the pump housing 2, the pump cover 8 is provided with discharge port 9, and this discharge port 9 is connected with bend pipe 14 by 10 seal rings, discharging joint 11.Two end faces of driving and driven gear 4,5 are provided with respectively and the concentric O-ring seals 6 of axis of gear shaft separately, O RunddichtringO 6 will exceed the certain distance of gear face, make it not only satisfy sealing requirements but also can not produce excessive frictional force, and make O-ring seals 6 gap between two end faces of filling driving gears 4 and driven gear 5 and the pump housing 2, the pump cover 8 respectively.Suction tube 17 can be as shown in Figure 1 be used in combination with rubber stopper 13, pressure-stabilizing spring 15, the seal ring 16 of relief valve; Also can separately use, both suction tube 17 can be assembled in driving gear 4 belows that are positioned at the pump housing 2, and the rubber stopper 13 of relief valve, pressure-stabilizing spring 15, seal ring 16 be still in position shown in Figure 1, substitutes suction tube 17 with plunger the hole is sealed.Alignment pin 22 is used for the pump housing 2 with opening locating stud 18, tightening nut 12 locatees when 8 assemblings are connected with pump cover, and the pin opening is used for circumferentially locating when gear pump is installed on miscellaneous equipment.Driving shaft (scheming not shown) matches with driving gear 4 by oil-impregnated bearing 19, and carries out axially locating, to reduce the abrasion of axle, the working life of improving axle.Driven shaft 21 matches with driven gear 5 by oil-impregnated bearing 20, to reduce abrasion therebetween, the working life of improving axle and gear.Overflow hole 23 is the overflow holes that use under relief valve and suction tube 17 assembled state, and overflow hole 3 is overflow holes that relief valve and suction tube 17 use when being installed separately.Cotter pin 24 is used for suction tube 17 is fixed on pump cover, and the intake port of the different bores on the suction tube 17 is circumferentially located.Intake port 25 is processing intake ports on pump cover 8.When the intake port in the different apertures on the suction tube 17 when intake port 25 on the pump cover 8 overlaps, feeding-passage is switched on, rotating suction tube 17 can make the intake port of the different bores on the suction tube 17 overlap with intake port 25 on the pump cover 8, to change the feed rate size, reach the purpose of the proportioning of regulating slurries and air.
During pump work, be contained in O-ring seals 6 and the coaxial rotation of gear on the gear, 6 fillings of rubber-like O-ring seals the gap between the surface of two end faces of driving gear 4 and driven gear 5 and the pump housing 2, pump cover 8, O-ring seals 6 is contacted with the surface of the pump housing 2, pump cover 8, thereby avoided gear face directly to contact, prevented the friction that produces between the same metal with the surface of the pump housing 2, pump cover 8.Utilize the elasticity of O-ring seals 6 can compensate the frictional loss of self automatically, can realize the dynamically gap-free sealed of the gear face and the pump housing 2, pump cover 8 surfaces, improved the sealability of pump.O-ring seals 6 has worn and torn, and takes off and changes new getting final product, and is both economical, convenient again.The designer can be as required arbitrarily the wear-resisting property of selector combined foodstuff hygienic requirements and the alloy steel material of corrosion resistance and good make gear, make gear pump performance and life-span be more prone to satisfy various user's requests.
The working principle of this pump is: when drive driven gear 5 is rotated counterclockwise when driving gear 4 turns clockwise, pump chamber between the pump housing 2, the pump cover 8 is because the vacuum effectiveness that its sealing produced, the slurries raw material is sucked in the pump chambers from suction tube 17, and take them to discharge port 9 places by driving gear 4 and be pressed in the seal container that is connected with bend pipe 14 and process.Meanwhile, driven gear 5 sucks pump chamber with the needed air of food production from overflow hole 23 or overflow hole 3, and compresses into seal container and fully mix with food slurries raw material, promptly can be made into bulk good to eat food.When the closed system pressure of pump reaches specified value, the pressure-stabilizing spring 15 of relief valve is compressed, overflow hole 23 or overflow hole 3 are opened, beyond the seal container of slurries excavationg pump, container pressure begins to fall after rise, and when the seal container pressure of pump fell back to setting value, the spring 15 of relief valve restPosed, overflow hole 23 or overflow hole 3 are closed again, and circulation makes it to keep the relevant pressure of seal container and so forth.When suction tube 17 as shown in Figure 1 with the rubber stopper 13 of relief valve, pressure-stabilizing spring 15, when seal ring 16 is used in combination, use overflow hole 23; When separately using, use overflow hole 3.
The using method of this device is identical with existing gear pump.
Claims (1)
1, a kind of gear pump, comprise the pump housing and pump cover and assemble the driving and driven gear of the pair of meshing in it, it is characterized in that: adopt two end faces of the driving and driven gear that stainless steel material or stainless steel powder metallurgy material make to be provided with respectively and the concentric O-ring seals of axis of gear shaft separately, and make O-ring seals distinguish gap between two end faces of filling driving gear and driven gear and the pump housing, the pump cover.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100467300A CN1873228A (en) | 2006-05-30 | 2006-05-30 | A gear pump |
| PCT/CN2007/000759 WO2007140679A1 (en) | 2006-05-30 | 2007-03-09 | A gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100467300A CN1873228A (en) | 2006-05-30 | 2006-05-30 | A gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1873228A true CN1873228A (en) | 2006-12-06 |
Family
ID=37483792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100467300A Pending CN1873228A (en) | 2006-05-30 | 2006-05-30 | A gear pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1873228A (en) |
| WO (1) | WO2007140679A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110103992A1 (en) * | 2008-04-09 | 2011-05-05 | Cully Kevin J | Gear pumps and methods for using gear pumps |
| US20120219442A1 (en) * | 2011-02-28 | 2012-08-30 | Chundong Dong | Pump device for ice cream or yogurt machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87211905U (en) * | 1987-08-14 | 1988-12-07 | 林可象 | Gear pump for non-lubricating liquid |
| FR2668208A1 (en) * | 1990-10-22 | 1992-04-24 | Bavouzet Michel | PUMP AND / OR ENGINE HYDRAULIC ENGINE OPERATING WITH WATER. |
| CN2210268Y (en) * | 1994-10-14 | 1995-10-18 | 西安液压件厂 | Reflux type light oil teeth pump |
| US5993183A (en) * | 1997-09-11 | 1999-11-30 | Hale Fire Pump Co. | Gear coatings for rotary gear pumps |
| CN2440124Y (en) * | 2000-09-11 | 2001-07-25 | 济南液压泵有限责任公司 | Gear pump with two-way axial-sealing compensation device |
| CN2743577Y (en) * | 2004-08-27 | 2005-11-30 | 李志江 | Multifunction gear type high pressure pump |
-
2006
- 2006-05-30 CN CNA2006100467300A patent/CN1873228A/en active Pending
-
2007
- 2007-03-09 WO PCT/CN2007/000759 patent/WO2007140679A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110103992A1 (en) * | 2008-04-09 | 2011-05-05 | Cully Kevin J | Gear pumps and methods for using gear pumps |
| US20120219442A1 (en) * | 2011-02-28 | 2012-08-30 | Chundong Dong | Pump device for ice cream or yogurt machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007140679A1 (en) | 2007-12-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DONG LINGYU Free format text: FORMER OWNER: DONG CHUNDONG Effective date: 20070105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070105 Address after: 110034, room 441, building 7-1, Tiger Hill Road, Huanggu District, Liaoning, Shenyang Applicant after: Dong Lingyu Address before: 110034, room 441, building 7-1, Tiger Hill Road, Huanggu District, Liaoning, Shenyang Applicant before: Dong Chundong |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |