CN204729823U - A kind of fuel tank return check valve pipe connector - Google Patents
A kind of fuel tank return check valve pipe connector Download PDFInfo
- Publication number
- CN204729823U CN204729823U CN201520035908.6U CN201520035908U CN204729823U CN 204729823 U CN204729823 U CN 204729823U CN 201520035908 U CN201520035908 U CN 201520035908U CN 204729823 U CN204729823 U CN 204729823U
- Authority
- CN
- China
- Prior art keywords
- return
- tube joint
- joint chair
- oil
- return tube
- 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
Links
Abstract
The utility model discloses a kind of fuel tank return check valve pipe connector, described return check valve pipe connector is connected to casing of hydraulic pump jointing, comprise return tube joint chair, oil returning pipe joint, spool and spring, described oil returning pipe joint is connected with return tube joint chair, return tube joint chair is provided with import one and outlet one, oil returning pipe joint is arranged on outside outlet one, spool and spring are arranged in return tube joint chair, spool is connected with spring, oil return screwed pipe is provided with in described return tube joint chair, oil return screwed pipe upper end is provided with adjusting nut, adjusting nut is connected with oil return screwed pipe, described return tube joint chair upper end and return tube joint chair export a place and are respectively equipped with seal groove one, seal groove two, return tube joint chair and casing of hydraulic pump jointing are provided with seal groove three, by the return tube joint chair be provided with, spool, namely spring forms the one-way valve of this return check valve pipe connector, its effect is impacted by system oil return to stop outside pump, in order to avoid oil return, flow backwards, damage part in pump.<i />
Description
Technical field
The utility model relates to fuel tank field, particularly a kind of fuel tank return check valve pipe connector.
Background technique
The oil returning pipe joint of fuel tank oil hydraulic pump is of a great variety, and generally have straight tube and 90 ° of bend pipes two kinds, common oil returning pipe joint structure is simple, only plays the effect of passage, even if pump housing inner chamber fluid and system fuel tank are linked up, makes pump housing inner chamber release of pressure.
At present, the system oil return surge pressure that existing oil returning pipe joint can bear is less, not obvious to the radiating effect of pump housing inner chamber, the conducting of oil returning pipe joint and closed underaction, reliability deficiency, and then the protection oil hidden danger to part in the pump housing.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of fuel tank return check valve pipe connector, to solve the above-mentioned multinomial defect caused in prior art.
For achieving the above object, the utility model provides following technological scheme: a kind of fuel tank return check valve pipe connector, described return check valve pipe connector is connected to casing of hydraulic pump jointing, comprise return tube joint chair, oil returning pipe joint, spool and spring, described oil returning pipe joint is connected with return tube joint chair, return tube joint chair is provided with import one and outlet one, oil returning pipe joint is arranged on outside outlet one, spool and spring are arranged in return tube joint chair, spool is connected with spring, oil return screwed pipe is provided with in described return tube joint chair, oil return screwed pipe upper end is provided with adjusting nut, adjusting nut is connected with oil return screwed pipe, described return tube joint chair upper end and return tube joint chair export a place and are respectively equipped with seal groove one, seal groove two, return tube joint chair and casing of hydraulic pump jointing are provided with seal groove three.
Preferably, described seal groove one, seal groove two and seal groove three are equipped with seal ring.
Preferably, described seal ring is O RunddichtringO.
Preferably, be provided with passage one in described oil return screwed pipe, oil returning pipe joint is provided with passage two.
Preferably, described spool is triangular pyramid type.
The beneficial effect of above technological scheme is adopted to be: the one-way valve namely being formed this return check valve pipe connector by the return tube joint chair that is provided with, spool, spring, its effect is impacted by system oil return to stop outside pump, in order to avoid oil return, flow backwards, damage part in pump.When system oil return produces without when impacting, one-way valve is pushed in the oil return with certain pressure open, pump housing inner chamber is linked up by this equipment and system oil sump tank, and the heat that pump is produced because of power loss takes the pump housing out of by oil return, has good thermal diffusivity, thus reduce the temperature rise of pump, reduce the rate of wear of friction pair, prevent the damage of rubber seal, when system oil return produces impact, one-way valve is closed in time, is impacted by system oil return and stops outside pump, although return tube joint chair is simple, new and original, wherein oil return screwed pipe is the conjunction of this device and the pump housing, it is again drainback passage, also be the running shaft of pipe joint simultaneously, when interface does not dock with main frame, upper end adjusting nut can be unscrewed, horizontally rotate tube joint assembly, just it can be made to be in Best link position, and the design of return tube joint chair is also unique, it plays the turning effect of vertical passage on the one hand, it is again one-way valve valve body, also can carry out swivel joint with it simultaneously, adjust the direction of later pipe joint, have employed 4 O-ring seals, be arranged in the seal groove of later pipe joint chair and oil return screwed pipe respectively, make the circulation sealing of fluid reliable.This return check valve pipe connector is reasonable in design, compact structure, and convenient and flexible installation is safe and reliable, completely solves multinomial defect of the prior art.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fuel tank return check valve pipe connector described in the utility model;
Wherein, 1--oil return screwed pipe, 2--seal ring, 3--return tube joint chair, 4--adjusting nut, 5--spool, 6--spring, 7--oil returning pipe joint, 8--passage two, 9--outlet one, 10--casing of hydraulic pump, 11--passage one, 12--import one.
Embodiment
Preferred implementation of the present utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 shows embodiment of the present utility model: a kind of fuel tank return check valve pipe connector, described return check valve pipe connector is connected to casing of hydraulic pump 10 jointing, comprise return tube joint chair 3, oil returning pipe joint 7, spool 5 and spring 6, described oil returning pipe joint 7 is connected with return tube joint chair 3, return tube joint chair 3 is provided with import 1 and outlet 1, oil returning pipe joint 7 is arranged on outside outlet 1, spool 5 and spring 6 are arranged in return tube joint chair 3, spool 5 is connected with spring 6, oil return screwed pipe 1 is provided with in described return tube joint chair 3, oil return screwed pipe 1 upper end is provided with adjusting nut 4, adjusting nut 4 is connected with oil return screwed pipe 1, described return tube joint chair 3 upper end and return tube joint chair 3 export one 9 places and are respectively equipped with seal groove one, seal groove two, return tube joint chair 3 and casing of hydraulic pump 10 jointing are provided with seal groove three, described seal groove one, seal groove two and seal groove three are equipped with seal ring 2, described seal ring 2 is O RunddichtringO 2, passage 1 is provided with in described oil return screwed pipe 1, oil returning pipe joint 7 is provided with passage 28, described spool 5 is triangular pyramid type.
Described in said structure, this return check valve pipe connector oil returning pipe joint 7 direction need be parallel to oil hydraulic pump main-shaft axis, and require that pipe joint structure is compact, its connector center line-spacing oil return main-shaft axis is only 46mm, and namely return tube joint chair 3, spool 5, spring 6 form one-way valve.Its effect is impacted by system oil return to stop outside pump, in order to avoid oil return, flows backwards, damage part in pump.When system oil return produces without when impacting, because the rigidity of check valve spring 6 is very little, be only 0.6N/mm, cracking pressure is only 0.02MPa, one-way valve is pushed in the oil return with certain pressure open, pump housing inner chamber and system oil return case are linked up, the heat that pump is produced because of power loss takes the pump housing out of by oil return, there is good thermal diffusivity, thus reduce the temperature rise of pump, reduce the rate of wear of friction pair, prevent the damage of rubber seal, when system oil return produces impact, one-way valve is closed in time, is impacted by system oil return and stops outside pump; Although this return tube joint chair 3 is simple, new and original, wherein oil return screwed pipe 1 is the conjunction of itself and the pump housing, it is again drainback passage, also be the running shaft of pipe joint simultaneously, when interface does not dock with main frame, upper end nut can be unscrewed, horizontally rotate tube joint assembly, it just can be made to be in Best link position.And the design of return tube joint chair 3 is also unique, it plays the turning effect of vertical passage on the one hand, it is again one-way valve valve body, also can carry out swivel joint with it simultaneously, the direction of Correctional tube joint, have employed 4 O-ring seals 2, be arranged on respectively in the seal groove of later pipe joint chair and oil return screwed pipe 1, make the circulation sealing of fluid reliable.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. a fuel tank return check valve pipe connector, described return check valve pipe connector is connected to casing of hydraulic pump jointing, it is characterized in that: comprise return tube joint chair, oil returning pipe joint, spool and spring, described oil returning pipe joint is connected with return tube joint chair, return tube joint chair is provided with import one and outlet one, oil returning pipe joint is arranged on outside outlet one, spool and spring are arranged in return tube joint chair, spool is connected with spring, oil return screwed pipe is provided with in described return tube joint chair, oil return screwed pipe upper end is provided with adjusting nut, adjusting nut is connected with oil return screwed pipe, described return tube joint chair upper end and return tube joint chair export a place and are respectively equipped with seal groove one, seal groove two, return tube joint chair and casing of hydraulic pump jointing are provided with seal groove three.
2. fuel tank return check valve pipe connector according to claim 1, is characterized in that: described seal groove one, seal groove two and seal groove three are equipped with seal ring.
3. fuel tank return check valve pipe connector according to claim 2, is characterized in that: described seal ring is O RunddichtringO.
4. fuel tank return check valve pipe connector according to claim 1, is characterized in that: be provided with passage one in described oil return screwed pipe, oil returning pipe joint is provided with passage two.
5. fuel tank return check valve pipe connector according to claim 1, is characterized in that: described spool is triangular pyramid type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520035908.6U CN204729823U (en) | 2015-01-19 | 2015-01-19 | A kind of fuel tank return check valve pipe connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520035908.6U CN204729823U (en) | 2015-01-19 | 2015-01-19 | A kind of fuel tank return check valve pipe connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729823U true CN204729823U (en) | 2015-10-28 |
Family
ID=54388176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520035908.6U Expired - Fee Related CN204729823U (en) | 2015-01-19 | 2015-01-19 | A kind of fuel tank return check valve pipe connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204729823U (en) |
-
2015
- 2015-01-19 CN CN201520035908.6U patent/CN204729823U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: Tank wagon return check valve coupling device Effective date of registration: 20180427 Granted publication date: 20151028 Pledgee: Chuzhou financing Company limited by guarantee Pledgor: Chuzhou Xingyang Automobile Co., Ltd. Registration number: 2018340000133 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20190119 |