CN203703577U - Bypass valve for oil filter - Google Patents
Bypass valve for oil filter Download PDFInfo
- Publication number
- CN203703577U CN203703577U CN201320824117.2U CN201320824117U CN203703577U CN 203703577 U CN203703577 U CN 203703577U CN 201320824117 U CN201320824117 U CN 201320824117U CN 203703577 U CN203703577 U CN 203703577U
- Authority
- CN
- China
- Prior art keywords
- bypass valve
- piston
- end cap
- valve end
- oil
- 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
- 239000003921 oil Substances 0.000 claims abstract description 31
- 239000010721 machine oil Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005336 cracking Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model relates to a bypass valve for an oil filter, which is internally arranged in filter element paper. The bypass valve comprises a center pipe and a bypass valve end cover; the input end of the center pipe is tightly connected with the filter element paper by the bypass valve end cover; the center of the bypass valve end cover is provided with an oil inlet; a valve body seat is arranged in the center pipe; the valve body seat is provided with an oil outlet; the valve body seat is provided with a through hole for enabling a piston to run through; the piston is sleeved with a spring; and the top of the piston seals up the oil inlet on the bypass valve end cover. Compared with the prior art, by improving the structure of the bypass valve end cover, the contact area of machine oil and the wall of the bypass valve end cover when the machine oil flows into the oil inlet is greatly reduced; and when difference of internal and external pressures of the bypass valve end cover reaches an opening pressure, the piston moves down to open the oil inlet and the machine oil flows in from the oil inlet and directly enters the center pipe, so that flow resistance caused by the wall of the bypass valve end cover is avoided and circulation performance of the bypass valve is improved.
Description
Technical field
The present invention relates to a kind of valve, especially relate to a kind of bypass valve for oil filter.
Background technique
The bypass valve using in oil filter is in the time that oil filter filter core is blocked, filter cleaner filler opening and oil outlet reach certain certain pressure difference, and bypass valve is opened, and machine oil is without filtration, directly flow to lubricated main oil gallery, thereby guarantee the normal lubricated of whole motor.
Grant number is that the Chinese patent of CN201425109Y discloses a kind of elastic bypass valve, there is following defect in this bypass valve: 1, sealing gasket coordinates the sealing configuration of spring, because sealing gasket mounting point is unfixing, when pressing down, sealing gasket easily walks, and engine oil flow process easily produces dead band; 2, sealing gasket is produced to very strong spring force when spring reset, processing ease becomes flexible the contact position of sealing gasket and spring frequently; 3, the end cap of liquid inflow entrance, in the time of assembling, need to put in end cap wall in liquid inflow entrance, and is placed in sealing gasket below.After bypass valve sealing gasket is opened under differential pressure action, machine oil and bypass valve end cap wall have long-pending compared with large contact surface, thereby increase the flow resistance of engine oil flow.
Summary of the invention
Object of the present invention is exactly to provide a kind of bypass valve for oil filter in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions: a kind of bypass valve for oil filter, be built in filter core paper, this bypass valve comprises center tube and bypass valve end cap, described center tube input end is closely connected with filter core paper by bypass valve end cap, described bypass valve end cap center offers filler opening, in described center tube, be provided with valve block, on this valve block, offer oil outlet, it is characterized in that, described valve block is provided with the through hole running through for piston, on described piston, be arranged with spring, piston head is by the filler opening sealing on bypass valve end cap,
In the time that bypass valve end cap inside and outside differential pressure reaches cracking pressure, piston moves down opens filler opening, and machine oil oil outlet from valve block from filler opening flows into flows out.
In the recessed insertion center tube of described bypass valve end cap, the sectional dimension of described piston head is less than the sectional dimension of bypass valve end cap concave part, and the size of oil outlet is less than piston head sectional dimension.
The upper-end surface of described piston is the circular arc of epirelief, the lower end surface of described bypass valve end cap concave part is the circular arc of the fovea superior that mates with the upper-end surface of piston, by machine oil from filler opening flow into when center tube and the surface of contact of bypass valve end cap drop to minimum, the flow resistance of then having avoided bypass valve end cap to bring.
The inwall of described center tube is provided with breach, and the outer wall of described bypass valve end cap is provided with the buckle coordinating with breach, bypass valve end cap is stablized and be arranged in center tube, is difficult for loosening.
The outward edge of described through hole is provided with the boss extending to center tube input end, and described spring housing is located on boss.
Described piston lower end is provided with the opening that connects piston front and back side, the piston outer wall of these opening both sides is provided with barb, in the time that piston is assembled, first the piston wall of opening both sides is pushed in opposite directions, piston lower end is passed from through hole, when the design of barb can effectively be avoided spring reset, because spring force is excessive, piston is ejected from through hole.
Compared with prior art, the present invention is by improving bypass valve end cover structure, greatly reduce when machine oil flows into filler opening and the area of contact of bypass valve end cap wall, in the time that bypass valve end cap inside and outside differential pressure reaches cracking pressure, piston moves down opens filler opening, machine oil directly enters in center tube from filler opening flows into, and has avoided the flow resistance that causes because of bypass valve end cap wall, has improved the trafficability performance of bypass valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art elastic force bypass valve;
Fig. 2 is the structural representation that the present invention is placed in filter core.
In Fig. 2,1 is bypass valve end cap, and 2 is piston, and 3 is spring, pipe centered by 4, and 5 is filter core paper, and 6 is the clean side end cap of filter core, and 7 is valve block, and 8 is boss, and 11 is filler opening, and 12 is buckle, and 21 is opening, and 22 is barb, and 71 is oil outlet.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 2, a kind of bypass valve for oil filter, be built in filter core paper 5, this bypass valve comprises center tube 4 and bypass valve end cap 1, described center tube 4 input ends are closely connected with filter core paper 5 by bypass valve end cap 1, center tube 4 output terminals are closely connected with filter core paper 5 by the clean side end cap 6 of filter core, described bypass valve end cap 1 center offers filler opening 11, in described center tube 4, be provided with valve block 7, on this valve block 7, offer oil outlet 71, it is characterized in that, described valve block 7 is provided with the through hole running through for piston 2, on described piston 2, be arranged with spring 3, the top of piston 2 seals the filler opening on bypass valve end cap 1 11, in the recessed insertion center tube 4 of described bypass valve end cap 1, the sectional dimension at described piston 2 tops is less than the sectional dimension of bypass valve end cap 1 concave part, and the size of oil outlet 11 is less than piston 2 top cross-section sizes, the circular arc that the upper-end surface of described piston 2 is epirelief, the lower end surface of described bypass valve end cap 1 concave part is the circular arc of the fovea superior that mates with the upper-end surface of piston 2, when machine oil is flowed into center tube 4 from filler opening 11 and the surface of contact of bypass valve end cap 1 drop to minimum, the flow resistance of then having avoided bypass valve end cap 1 to bring, the inwall of described center tube 4 is provided with breach, and the outer wall of described bypass valve end cap 1 is provided with the buckle 12 coordinating with breach, bypass valve end cap 1 is stablized and be arranged in center tube 4, is difficult for loosening, the outward edge of described through hole is provided with the boss 8 extending to center tube 4 input ends, and described spring 3 is set on boss 8, described piston 2 lower ends are provided with the opening 21 that connects piston 2 front and back sides, the piston outer wall of these opening 21 both sides is provided with barb 22, in the time that piston 2 is assembled, first the piston wall of opening 21 both sides is pushed in opposite directions, piston 2 lower ends are passed from through hole, when the design of barb 22 can effectively be avoided spring reset, because spring force is excessive, piston is ejected from through hole.
In the time that bypass valve end cap inside and outside differential pressure reaches cracking pressure, piston moves down opens filler opening, and machine oil oil outlet from valve block from filler opening flows into flows out.
Claims (6)
1. the bypass valve for oil filter, be built in filter core paper, this bypass valve comprises center tube and bypass valve end cap, described center tube input end is closely connected with filter core paper by bypass valve end cap, described bypass valve end cap center offers filler opening, in described center tube, be provided with valve block, on this valve block, offer oil outlet, it is characterized in that, described valve block is provided with the through hole running through for piston, on described piston, be arranged with spring, piston head is by the filler opening sealing on bypass valve end cap;
In the time that bypass valve end cap inside and outside differential pressure reaches cracking pressure, piston moves down opens filler opening, and machine oil oil outlet from valve block from filler opening flows into flows out.
2. a kind of bypass valve for oil filter according to claim 1, is characterized in that, in the recessed insertion center tube of described bypass valve end cap, the sectional dimension of described piston head is less than the sectional dimension of bypass valve end cap concave part.
3. a kind of bypass valve for oil filter according to claim 2, it is characterized in that, the upper-end surface of described piston is the circular arc of epirelief, and the lower end surface of described bypass valve end cap concave part is the circular arc of the fovea superior that mates with the upper-end surface of piston.
4. a kind of bypass valve for oil filter according to claim 1, is characterized in that, the inwall of described center tube is provided with breach, and the outer wall of described bypass valve end cap is provided with the buckle coordinating with breach.
5. a kind of bypass valve for oil filter according to claim 1, is characterized in that, described through hole outward edge is provided with the boss extending to center tube input end, and described spring housing is located on boss.
6. a kind of bypass valve for oil filter according to claim 1, is characterized in that, described piston lower end is provided with the opening that connects piston front and back side, and the piston outer wall of these opening both sides is provided with barb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824117.2U CN203703577U (en) | 2013-12-13 | 2013-12-13 | Bypass valve for oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824117.2U CN203703577U (en) | 2013-12-13 | 2013-12-13 | Bypass valve for oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703577U true CN203703577U (en) | 2014-07-09 |
Family
ID=51054019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320824117.2U Expired - Fee Related CN203703577U (en) | 2013-12-13 | 2013-12-13 | Bypass valve for oil filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757096A (en) * | 2018-07-04 | 2018-11-06 | 浙江威泰汽配有限公司 | A kind of novel machine filter by-passing valve mounting structure |
-
2013
- 2013-12-13 CN CN201320824117.2U patent/CN203703577U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757096A (en) * | 2018-07-04 | 2018-11-06 | 浙江威泰汽配有限公司 | A kind of novel machine filter by-passing valve mounting structure |
| CN108757096B (en) * | 2018-07-04 | 2024-02-02 | 浙江威泰汽配有限公司 | Novel machine is strained bypass valve mounting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20171213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |