CN207178201U - A kind of gear pump with unloading valve - Google Patents
A kind of gear pump with unloading valve Download PDFInfo
- Publication number
- CN207178201U CN207178201U CN201721101403.0U CN201721101403U CN207178201U CN 207178201 U CN207178201 U CN 207178201U CN 201721101403 U CN201721101403 U CN 201721101403U CN 207178201 U CN207178201 U CN 207178201U
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- CN
- China
- Prior art keywords
- valve
- valve body
- unloading
- gear
- protecgulum
- 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.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a kind of gear pump with unloading valve, including pump agent structure, drive mechanism and unloading valve, pump agent structure includes the pump housing, protecgulum and unloading valve, and protecgulum is detachably arranged at the front end of the pump housing, and unloading valve is detachably arranged at the rear end of the pump housing；Drive mechanism includes axle sleeve, driving shaft, driving gear, driven shaft and driven gear, and driving gear connects with driven gear external toothing；Unloading valve includes rear valve body, inner valve body component and outer valve component, rear valve body is arranged at the rear end of the pump housing, valve body outer end cap is provided with rear valve body, rear valve body is provided with first passage and second channel, inner valve body component is arranged on rear valve body and is connected between first passage and second channel, and outer valve component is arranged on rear valve body and between second channel and valve body outer end cap.The utility model is wholely set compared to prior art, unloading valve with pump agent structure, and overall dimensions are small to be easily installed, and operating pressure is high, and volumetric efficiency is high, service life length.
Description
Technical field
The utility model belongs to hydraulic system technical field, and in particular to a kind of gear pump with unloading valve.
Background technology
In the prior art, valve body and pump housing split, the pressure loss is big, and volume is big, and procedure seals difficulty is big, and oil leak is relatively tight
Weight.
Therefore, a kind of gear pump with unloading valve is needed badly.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of gear pump with unloading valve.
In order to achieve the above object, the technical solution of the utility model is as follows：
The utility model provides a kind of gear pump with unloading valve, including：
Pump agent structure, including the pump housing, protecgulum and unloading valve, protecgulum are detachably arranged at the front end of the pump housing, and unloading valve can
Dismounting is arranged at the rear end of the pump housing；
Drive mechanism, including axle sleeve, driving shaft, driving gear, driven shaft and driven gear, axle sleeve are arranged in the pump housing,
Driving gear is connected and is respectively arranged on axle sleeve with driven gear external toothing, and driving shaft is connected with driving gear, driven
Axle is connected with driven gear；
Unloading valve, including rear valve body, inner valve body component and outer valve component, rear valve body are arranged at the rear end of the pump housing, rear valve
Valve body outer end cap is provided with body, rear valve body is provided with first passage and second channel, and inner valve body component is arranged on rear valve body
And be connected between first passage and second channel, outer valve component is arranged on rear valve body and outside second channel and valve body
Between end cap.
The utility model is wholely set compared to prior art, unloading valve with pump agent structure, and overall dimensions are small to be easy to pacify
Dress, operating pressure is high, and volumetric efficiency is high, service life length.
On the basis of above-mentioned technical proposal, following improvement can be also done：
As preferable scheme, ecto-entad is sequentially provided with circlip for hole and double between above-mentioned protecgulum and driving shaft
Backbone sealing ring.
Using above-mentioned preferable scheme, double backbone sealing rings are sealed, good seal performance, have overload protective function.
As preferable scheme, extension is provided with flange surface, the outer surface of flange surface laterally on above-mentioned protecgulum
It is provided with O-ring seal.
Pass through cylinder pin connection between the above-mentioned pump housing and protecgulum and between the pump housing and rear valve body.
Bushing is provided between above-mentioned driving shaft and axle sleeve and between driven shaft and axle sleeve.
The surrounding and axle sleeve and rear valve body of surrounding and driven shaft between above-mentioned axle sleeve and protecgulum and positioned at driving shaft
Between and the surrounding positioned at driving shaft and driven shaft be surrounded by E type sealing rings, E types sealing ring is provided with Sealing shield ring.
Rectangular seal is additionally provided between the above-mentioned pump housing and protecgulum and between the pump housing and rear valve body.
Using above-mentioned preferable scheme, sealing ring is provided between each part, further improves sealing property.
As preferable scheme, above-mentioned inner valve body component includes the first valve body, the first valve element, inner spring, the second valve element
With the 3rd valve body, the first valve body is connected with first passage, and the first valve element is arranged on the first valve body, the 3rd valve body and second channel
Connection, the second valve element are arranged between the first valve element and the 3rd valve body, and inner spring is arranged between the second valve element and the first valve element.
Above-mentioned outer valve component includes the second valve body, the 3rd valve element, spring, the 4th valve body, the 4th valve element and the 5th valve
Core, the second valve body are connected between second channel and valve body outer end cap, and the 4th valve body connects with second channel, the 3rd valve element
The bottom of the second valve body is arranged at, the 4th valve element is arranged at the top of the second valve body, and the 5th valve element is arranged in the 4th valve body, bullet
Spring is arranged between four valve elements and the 5th valve element.
The inner side end of above-mentioned valve body outer end cap is inner concave arc surface structure.
Using above-mentioned preferable scheme, band unloading valve heating wear phenomenon will not occur with rear gear pump because of overload,
Gear pump working life lengthens.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
In order to reach the purpose of this utility model, as shown in figure 1, being carried in one of which embodiment of the present utility model
For a kind of gear pump with unloading valve, including：
Pump agent structure, including the pump housing 6, protecgulum 4 and unloading valve, protecgulum 4 are detachably arranged at the front end of the pump housing 6, off-load
Valve is detachably arranged at the rear end of the pump housing 6；
Drive mechanism, including axle sleeve 9, driving shaft, driving gear 7, driven shaft and driven gear 8, axle sleeve 9 are arranged at the pump housing
In 6, driving gear 7 is connected and is respectively arranged on axle sleeve 9 with the external toothing of driven gear 8, and driving shaft connects with the transmission of driving gear 7
Connect, driven shaft is connected with driven gear 8；
Unloading valve, including rear valve body 14, inner valve body component and outer valve component, rear valve body 14 are arranged at the rear end of the pump housing 6,
Valve body outer end cap 19 is provided with rear valve body 14, rear valve body 14 is provided with first passage and second channel, and inner valve body component is set
In on rear valve body 14 and being connected between first passage and second channel, outer valve component is arranged on rear valve body 14 and positioned at the
Between two passages and valve body outer end cap.
Present embodiment is wholely set compared to prior art, unloading valve with pump agent structure, and overall dimensions are small to be easy to pacify
Dress, operating pressure is high, and volumetric efficiency is high, service life length.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, ecto-entad is sequentially provided with circlip for hole 1 and double bones between above-mentioned protecgulum 4 and driving shaft
Frame sealing ring 3.
Using above-mentioned preferable scheme, double backbone sealing rings 3 are sealed, good seal performance, have overload protective function.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, extension is provided with flange surface laterally on above-mentioned protecgulum 4, is set on the outer surface of flange surface
There is O-ring seal 2.
Connected between the above-mentioned pump housing 6 and protecgulum 4 and between the pump housing 6 and rear valve body 14 by straight pin 5.
Bushing 10 is provided between above-mentioned driving shaft and axle sleeve 9 and between driven shaft and axle sleeve 9.
The surrounding and axle sleeve 9 of surrounding and driven shaft between above-mentioned axle sleeve 9 and protecgulum 4 and positioned at driving shaft are with after
Surrounding and driven shaft between valve body 14 and positioned at driving shaft are surrounded by E types sealing ring 11, and E types sealing ring 11 is provided with close
Block circle 12.
Rectangular seal 13 is additionally provided between the above-mentioned pump housing 6 and protecgulum 4 and between the pump housing 6 and rear valve body 14.
Using above-mentioned preferable scheme, sealing ring is provided between each part, further improves sealing property.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, above-mentioned inner valve body component includes the first valve body 15, the first valve element 16, inner spring 17, the second valve
The valve body 24 of core 18 and the 3rd, the first valve body are connected with first passage, and the first valve element is arranged on the first valve body, the 3rd valve body and
Two passages are connected, and the second valve element is arranged between the first valve element and the 3rd valve body, and inner spring is arranged at the second valve element and the first valve
Between core.
Above-mentioned outer valve component includes the second valve body 21, the 3rd valve element 20, spring 23, the 4th valve body 25, the 4th valve element
22 and the 5th valve element 26, the second valve body be connected between second channel and valve body outer end cap, the 4th valve body and second channel
Connection, the 3rd valve element are arranged at the bottom of the second valve body, and the 4th valve element is arranged at the top of the second valve body, and the 5th valve element is arranged at
In 4th valve body, spring is arranged between four valve elements and the 5th valve element.
The inner side end of above-mentioned valve body outer end cap is inner concave arc surface structure.
Using above-mentioned preferable scheme, band unloading valve heating wear phenomenon will not occur with rear gear pump because of overload,
Gear pump working life lengthens.
Operation principle of the present utility model is described further below：When motor driven gear pump operates, liquid
Force feed passes through filter from system fuel tank, oil pump suction chamber is reached, by the relative engagement of driving gear and driven gear, by tooth
Wheel pump oil sucting cavity reaches pumping cavity, then exports, is overloaded when pressure is to peaking, unloading valve start-up operation off-load, is reached
To overload protective function.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (10)
- A kind of 1. gear pump with unloading valve, it is characterised in that including：Pump agent structure, including the pump housing, protecgulum and unloading valve, protecgulum are detachably arranged at the front end of the pump housing, and unloading valve is detachable It is arranged at the rear end of the pump housing；Drive mechanism, including axle sleeve, driving shaft, driving gear, driven shaft and driven gear, axle sleeve are arranged in the pump housing, actively Gear is connected and is respectively arranged on axle sleeve with driven gear external toothing, and driving shaft and driving gear are connected, driven shaft with Driven gear is connected；Unloading valve, including rear valve body, inner valve body component and outer valve component, rear valve body are arranged at the rear end of the pump housing, on rear valve body Valve body outer end cap is provided with, rear valve body is provided with first passage and second channel, and inner valve body component is arranged on rear valve body and connected It is connected between first passage and second channel, outer valve component is arranged on rear valve body and is located at second channel and valve body outer end cap Between.
- 2. the gear pump according to claim 1 with unloading valve, it is characterised in that by extroversion between protecgulum and driving shaft Inside it is sequentially provided with circlip for hole and double backbone sealing rings.
- 3. the gear pump according to claim 1 with unloading valve, it is characterised in that extension is provided with method laterally on protecgulum Blue card, the outer surface of flange surface are provided with O-ring seal.
- 4. the gear pump according to claim 1 with unloading valve, it is characterised in that between the pump housing and protecgulum and pump Pass through cylinder pin connection between body and rear valve body.
- 5. the gear pump according to claim 1 with unloading valve, it is characterised in that between driving shaft and axle sleeve and Bushing is provided between driven shaft and axle sleeve.
- 6. the gear pump according to claim 1 with unloading valve, it is characterised in that between axle sleeve and protecgulum and positioned at master The surrounding of surrounding and driven shaft between the surrounding of moving axis and the surrounding of driven shaft and axle sleeve and rear valve body and positioned at driving shaft Provided with E type sealing rings, E types sealing ring is provided with Sealing shield ring.
- 7. the gear pump according to claim 1 with unloading valve, it is characterised in that between the pump housing and protecgulum and pump Rectangular seal is additionally provided between body and rear valve body.
- 8. the gear pump according to claim 1 with unloading valve, it is characterised in that inner valve body component includes the first valve Body, the first valve element, inner spring, the second valve element and the 3rd valve body, the first valve body connect with first passage, and the first valve element is arranged at On one valve body, the 3rd valve body is connected with second channel, and the second valve element is arranged between the first valve element and the 3rd valve body, and inner spring is set It is placed between the second valve element and the first valve element.
- 9. the gear pump according to claim 1 with unloading valve, it is characterised in that outer valve component includes the second valve Body, the 3rd valve element, spring, the 4th valve body, the 4th valve element and the 5th valve element, the second valve body are connected in second channel and valve body Between outer end cap, the 4th valve body is connected with second channel, and the 3rd valve element is arranged at the bottom of the second valve body, and the 4th valve element is arranged at The top of second valve body, the 5th valve element are arranged in the 4th valve body, and spring is arranged between four valve elements and the 5th valve element.
- 10. the gear pump according to claim 1 with unloading valve, it is characterised in that the inner side end of valve body outer end cap For inner concave arc surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721101403.0U CN207178201U (en) | 2017-08-30 | 2017-08-30 | A kind of gear pump with unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721101403.0U CN207178201U (en) | 2017-08-30 | 2017-08-30 | A kind of gear pump with unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178201U true CN207178201U (en) | 2018-04-03 |
Family
ID=61739712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721101403.0U Expired - Fee Related CN207178201U (en) | 2017-08-30 | 2017-08-30 | A kind of gear pump with unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973381A (en) * | 2019-03-19 | 2019-07-05 | 中国航发湖南动力机械研究所 | Gear pump and retarder |
-
2017
- 2017-08-30 CN CN201721101403.0U patent/CN207178201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973381A (en) * | 2019-03-19 | 2019-07-05 | 中国航发湖南动力机械研究所 | Gear pump and retarder |
| CN109973381B (en) * | 2019-03-19 | 2021-05-28 | 中国航发湖南动力机械研究所 | Gear pump and speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20190830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |