CN207598490U - A kind of hydraulic pressure crescent gear pump - Google Patents
A kind of hydraulic pressure crescent gear pump Download PDFInfo
- Publication number
- CN207598490U CN207598490U CN201721357232.8U CN201721357232U CN207598490U CN 207598490 U CN207598490 U CN 207598490U CN 201721357232 U CN201721357232 U CN 201721357232U CN 207598490 U CN207598490 U CN 207598490U
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- China
- Prior art keywords
- gear
- ring
- distribution casing
- protecgulum
- oil distribution
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Abstract
The utility model discloses a kind of hydraulic pressure crescent gear pumps, including protecgulum and rear cover, setting sprocket drive spindle in the protecgulum and rear cover, gear shaft outer cover is equipped with axle sleeve, setting rack gear in the middle part of gear shaft, gear is provided in gear shaft and gear ring, ontology is provided on the outside of gear ring, gear ring upper surface is provided with rear oil distribution casing, preceding oil distribution casing is provided with below gear ring, afterwards rear cover sealing ring is provided with above oil distribution casing, protecgulum sealing ring is provided with below preceding oil distribution casing, the gear shaft is arranged with outside framework oil seal close to protecgulum one end, the outside framework oil seal is fixed by internal jump ring, the gear is divided into gear wheel and pinion gear, it is engaged inside described pinion gear one end and gear wheel.The utility model can improve the volumetric efficiency of oil pump, improve the operating pressure of oil pump, while reduce the operating noise of oil pump, reduce the flow output ripple of oil pump.
Description
Technical field
The utility model is related to pump, more particularly to a kind of hydraulic pressure crescent gear pump.
Background technology
Gear pump is the extremely extensive hydraulic oil pump of a purposes, which is adapted to relatively low price, very strong oil product
The advantages that ability, lighter quality, very high power density, higher operating pressure etc. wait is widely used in lathe, metallurgical,
The industries such as engineering machinery, forging and stamping, are particularly suitable for field work condition more rugged environment.
Existing overwhelming majority gear pump is external gear rotary pump, and the pump is using the identical normal shift external gear of two parameters
Axis rotates in a closed space, constantly engages, and the tooth top of gear shaft coordinates with pump case for small―gap suture, ensure that tooth top sky
Between it is closed, the gear both ends of gear shaft are closed using oil distribution casing, and as gear is engaged less than rotation, the engagement of gear is empty
Between constantly change from small to big on one side, form negative pressure, fluid is constantly inhaled into gear pump case from fuel tank, and in addition one side is nibbled
Constantly from large to small, the fluid for sucking the pump housing is constantly squeezed out pump case input executing agency after valve group is with oil in conjunction space
(oil cylinder, oil motor) completes acting.The gear pump has, simple in structure, cheap, sturdy durable, oil resistant product pollution capacity
By force, adaptable to oil product, power density is big, and operating pressure is higher and is widely applied, but external gear rotary pump
Also there is apparent limitation, be embodied in：1 pump volumetric efficiency is not high, and internal leakage is larger, results in the pump pressure and is difficult
Have again promotion space (pressure was only 2.5Mpa in the past, stepped up 16Mpa later, now promoted arrived 21Mpa,
It is difficult to improve again).The 2 pump noises are larger.3：The pump discharge output ripple is larger.What time determine the pump to pressure above
Power, the higher occasion of traffic requirement have significant limitation.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model, which provides one kind, can improve oil pump
Volumetric efficiency, improve the operating pressure of oil pump, while reduce the operating noise of oil pump, reduce the flow output ripple of oil pump
Hydraulic pressure crescent gear pump.
Technical solution：To achieve the above object, the utility model provides a kind of hydraulic pressure crescent gear pump, including protecgulum and
Setting sprocket drive spindle in rear cover, the protecgulum and rear cover, gear shaft outer cover are equipped with axle sleeve, rack gear are set in the middle part of gear shaft,
Gear is provided in gear shaft and gear ring, ontology is provided on the outside of gear ring, gear ring upper surface is provided with rear oil distribution casing, gear ring lower section
Preceding oil distribution casing is provided with, rear cover sealing ring is provided with above rear oil distribution casing, protecgulum sealing ring is provided with below preceding oil distribution casing, it is described
Gear shaft is arranged with outside framework oil seal close to protecgulum one end, and the outside framework oil seal is fixed by internal jump ring, and the gear is divided into canine tooth
It is engaged inside wheel and pinion gear, described pinion gear one end and gear wheel.
Further, positioning column is provided in the gear wheel, positioning column one end is provided with interior swing link and outer swing link.
Further, spring leaf and sticking plaster are provided on the interior swing link, are covered after described and be provided with positioning pin.
Further, baffle ring is provided between the preceding oil distribution casing and protecgulum sealing ring, the rear oil distribution casing and rear cover are close
Baffle ring is provided between seal.By being provided with baffle ring between preceding oil distribution casing and protecgulum sealing ring, preceding oil distribution casing can be prevented
It is in direct contact with protecgulum sealing ring and causes to wear, the service life of oil distribution casing and protecgulum sealing ring before extension.Pass through rear oil distribution casing
Baffle ring is provided between rear cover sealing ring, rear oil distribution casing and rear cover sealing ring can be prevented to be in direct contact and cause to wear, is extended
The service life of oil distribution casing and rear cover sealing ring afterwards.
Further, it is arranged with O-ring on the ontology.By being arranged O-ring on ontology, it is possible to reduce the mill of ontology
Damage extends the service life of ontology.
Further, the rear cap upper surface is provided with lock washer.It, can by setting lock washer in rear cap upper surface
To improve the sealing performance of single unit system.
Advantageous effect：The utility model has the following advantages compared with prior art：The utility model is former using internal messing
Reason, increases the width of the path of contact of each gear teeth, while the number of teeth for increasing while engaging, greatly improves the volume of oil pump
Efficiency promotes the operating pressure of oil pump and has arrived 35Mpa, the power density of oil pump further improved, due to the part of oil pump
Precision improves, and the operating noise of oil pump is greatly reduced, since the number of teeth that novel oil pump engages simultaneously is more, the fluid output of oil pump
Pulse greatly reduces, and the working life of oil pump is significantly improved compared with traditional external gear rotary pump.
Description of the drawings
Fig. 1 is the internal structure schematic diagram of the utility model；
Fig. 2 is the structure diagram of the utility model.
1st, protecgulum, 2, outside framework oil seal, 3, O-ring, 4, protecgulum sealing ring, 5, baffle ring, 6, preceding oil distribution casing, 7, gear ring, 8, this
Body, 9, rear oil distribution casing, 10, rear cover sealing ring, 11, axle sleeve, 12, rear cover, 13, gear shaft, 14, lock washer, 15, internal jump ring,
16th, positioning pin, 17, outer swing link, 18, sticking plaster, 19, spring leaf, 20, interior swing link, 21, positioning column, 22, gear wheel, 23,
Pinion gear.
Specific embodiment
The technical solution of the utility model is explained in detail below with reference to specific embodiment, as shown in Fig. 1 to 2, this
Utility model provides a kind of hydraulic pressure crescent gear pump, including protecgulum 1 and rear cover 12, is provided in the protecgulum 1 and rear cover 12
Gear shaft 13,13 outer cover of gear shaft are equipped with axle sleeve 11, and 13 middle part of gear shaft sets rack gear 7, set in gear shaft 13 and gear ring 7
Gear is equipped with, 7 outside of gear ring is provided with ontology 8, and 7 upper surface of gear ring is provided with rear oil distribution casing 9, and 7 lower section of gear ring is matched before being provided with
Food tray 6, rear 9 top of oil distribution casing are provided with rear cover sealing ring 10, and preceding 6 lower section of oil distribution casing is provided with protecgulum sealing ring 4, the gear
Axis 13 is arranged with outside framework oil seal 2 close to 1 one end of protecgulum, and the outside framework oil seal 2 is fixed by internal jump ring 15, and the gear is divided into greatly
Gear 22 and pinion gear 23, described 23 one end of pinion gear are engaged with 22 inside of gear wheel.The utility model uses internal messing principle,
The width of the path of contact of each gear teeth is increased, while the number of teeth for increasing while engaging, greatly improve the volume effect of oil pump
Rate promotes the operating pressure of oil pump and has arrived 35Mpa, further improves the power density of oil pump, due to the part essence of oil pump
Degree improves, and the operating noise of oil pump is greatly reduced, since the number of teeth that novel oil pump engages simultaneously is more, the fluid output arteries and veins of oil pump
Punching greatly reduces, and the working life of oil pump is significantly improved compared with traditional external gear rotary pump.
Positioning column 21 is provided in gear wheel 22,21 one end of positioning column is provided with interior swing link 20 and outer swing link 17.It is interior
Spring leaf 19 and sticking plaster 18 are provided on swing link 20, positioning pin 16 is provided on the rear cover 12.Preceding oil distribution casing 6 and protecgulum
Baffle ring 5 is provided between sealing ring 4, baffle ring 5 is provided between oil distribution casing 9 and rear cover sealing ring 10 after described.By matching preceding
Baffle ring 5 is provided between food tray 6 and protecgulum sealing ring 4, oil distribution casing 6 and protecgulum sealing ring 4 are in direct contact and cause before can preventing
Abrasion, the service life of oil distribution casing 6 and protecgulum sealing ring 4 before extension.By being set between rear oil distribution casing 9 and rear cover sealing ring 10
There is baffle ring 5, rear oil distribution casing 9 and rear cover sealing ring 10 can be prevented to be in direct contact and cause to wear, oil distribution casing 9 and rear cover are close after extension
The service life of seal 10.O-ring 3 is arranged on ontology 8.By being arranged O-ring 3 on ontology 8, it is possible to reduce ontology 8
Abrasion extends the service life of ontology 8.12 upper surface of rear cover is provided with lock washer 14.By being set in 12 upper surface of rear cover
Lock washer 14 can improve the sealing performance of single unit system.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of hydraulic pressure crescent gear pump, it is characterised in that：Including protecgulum and rear cover, setting is with teeth in the protecgulum and rear cover
Wheel shaft, gear shaft outer cover are equipped with axle sleeve, and rack gear is set in the middle part of gear shaft, gear, gear ring are provided in gear shaft and gear ring
Outside is provided with ontology, and gear ring upper surface is provided with rear oil distribution casing, and preceding oil distribution casing is provided with below gear ring, is set above rear oil distribution casing
Rear cover sealing ring is equipped with, is provided with protecgulum sealing ring below preceding oil distribution casing, the gear shaft is arranged with skeleton close to protecgulum one end
Oil sealing, the outside framework oil seal are fixed by internal jump ring, and the gear is divided into gear wheel and pinion gear, described pinion gear one end with it is big
Gear internal engages.
2. a kind of hydraulic pressure crescent gear pump according to claim 1, it is characterised in that：It is fixed to be provided in the gear wheel
Position column, positioning column one end is provided with interior swing link and outer swing link.
3. a kind of hydraulic pressure crescent gear pump according to claim 2, it is characterised in that：It is provided on the interior swing link
Spring leaf and sticking plaster cover after described and are provided with positioning pin.
4. a kind of hydraulic pressure crescent gear pump according to claim 1, it is characterised in that：The preceding oil distribution casing and protecgulum are close
Baffle ring is provided between seal, baffle ring is provided between oil distribution casing and rear cover sealing ring after described.
5. a kind of hydraulic pressure crescent gear pump according to claim 1, it is characterised in that：It is arranged on the ontology O-shaped
Circle.
6. a kind of hydraulic pressure crescent gear pump according to claim 1, it is characterised in that：Cap upper surface is provided with after described
Lock washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357232.8U CN207598490U (en) | 2017-10-20 | 2017-10-20 | A kind of hydraulic pressure crescent gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357232.8U CN207598490U (en) | 2017-10-20 | 2017-10-20 | A kind of hydraulic pressure crescent gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598490U true CN207598490U (en) | 2018-07-10 |
Family
ID=62756915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721357232.8U Active CN207598490U (en) | 2017-10-20 | 2017-10-20 | A kind of hydraulic pressure crescent gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588001A (en) * | 2017-10-20 | 2018-01-16 | 南京蒙福液压机械有限公司 | A kind of hydraulic pressure crescent gear pump |
| CN111911408A (en) * | 2020-08-31 | 2020-11-10 | 安徽江淮汽车集团股份有限公司 | Internal gear pump |
-
2017
- 2017-10-20 CN CN201721357232.8U patent/CN207598490U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588001A (en) * | 2017-10-20 | 2018-01-16 | 南京蒙福液压机械有限公司 | A kind of hydraulic pressure crescent gear pump |
| CN111911408A (en) * | 2020-08-31 | 2020-11-10 | 安徽江淮汽车集团股份有限公司 | Internal gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydraulic inner-meshed gear pump Effective date of registration: 20181128 Granted publication date: 20180710 Pledgee: Nanjing bank Limited by Share Ltd Lishui branch Pledgor: NANJING BLESSED HYDRAULIC MACHINERY CO., LTD. Registration number: 2018320000321 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200417 Granted publication date: 20180710 Pledgee: Nanjing bank Limited by Share Ltd Lishui branch Pledgor: NANJING BLESSED HYDRAULIC MACHINERY Co.,Ltd. Registration number: 2018320000321 |