CN204457929U - A kind of bypass valve - Google Patents
A kind of bypass valve Download PDFInfo
- Publication number
- CN204457929U CN204457929U CN201420822648.2U CN201420822648U CN204457929U CN 204457929 U CN204457929 U CN 204457929U CN 201420822648 U CN201420822648 U CN 201420822648U CN 204457929 U CN204457929 U CN 204457929U
- Authority
- CN
- China
- Prior art keywords
- back cavity
- indicating arm
- chamber
- valve body
- ante
- 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
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 34
- 239000010721 machine oil Substances 0.000 abstract description 11
- 239000012535 impurity Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 241000219307 Atriplex rosea Species 0.000 description 3
- 241000586542 Aonidiella citrina Species 0.000 description 2
- 241001677188 Coccus viridis Species 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a kind of bypass valve, comprise valve body, the back cavity being provided with ante-chamber in valve body and being communicated with ante-chamber, described ante-chamber communicates with oil pocket before filter cleaner filtering, back cavity communicates with oil pocket after filter cleaner filtering, described back cavity is provided with multiple oil leak hole be communicated with oil pocket after filter cleaner filtering, the packed-piston that chamber, front and back is separated is installed between described ante-chamber and back cavity, the end of packed-piston is connected with through back cavity and stretches out the indicating arm of valve body, the part that described indicating arm is positioned at back cavity is set with Returnning spring, the rear portion of described indicating arm is provided with cue mark, cue mark is the scale of instruction filter core resistance, be convenient to the degree of fouling observing filter element, avoid not filtering machine oil and enter motor.
Description
Technical field
The utility model relates to a kind of bypass valve.
Background technique
In order to avoid the dirty blocking filter core of engine operation oil filter, motor is caused operationally to lose oil, there is the faults such as motorization watt and scuffing of cylinder bore, motor particularly big marine diesel engine oil filter is generally all provided with bypass valve, as shown in Figure 2, existing bypass valve comprises valve body 1, valve body ante-chamber 11 communicates with oil pocket before filter cleaner filtering, valve body back cavity 12 communicates with oil pocket after filter cleaner filtering, the steel ball 13 that ante-chamber 11 and back cavity 12 can be separated is installed in valve body 1, the inside of back cavity 12 is provided with the tight cap 14 of the spring seat protracted, between steel ball 13 and the tight cap 14 of spring seat, spring 15 is installed, along with the lengthening of engine on time, the impurity of filter core attachment is more, resistance is larger, when resistance reaches setting value, owing to there is pressure reduction before filter and after filter, when acting on the pressure on steel ball and being greater than spring pressure, steel ball is open, machine oil without filtering enters motor main oil gallery, the each friction pair of motor is lubricated, avoid motor to lose oil and occur the faults such as report vitrification watt.The bypass valve of this structure, when occurring that filter element blocks, bypass valve is opened, the machine oil of filtered enters motor to ensure the lubrication of motor, although the machine oil of filtered enters motor can avoid the catastrophe failures such as motor appearanceization watt and scuffing of cylinder bore, but the impurity in machine oil enters the friction pair of diesel engine, damage can be caused to motor.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned defect, provides and a kind ofly detects filter element soiled condition, avoids not filtering the bypass valve that machine oil enters motor.
In order to solve the problems of the technologies described above, the utility model comprises valve body, the back cavity being provided with ante-chamber in valve body and being communicated with ante-chamber, described ante-chamber communicates with oil pocket before filter cleaner filtering, back cavity communicates with oil pocket after filter cleaner filtering, described back cavity is provided with multiple oil leak hole be communicated with oil pocket after filter cleaner filtering, the packed-piston that chamber, front and back is separated is installed between described ante-chamber and back cavity, its structural feature is: the end of described packed-piston is connected with through back cavity and stretches out the indicating arm of valve body, the part that described indicating arm is positioned at back cavity is set with Returnning spring, the rear portion of described indicating arm is provided with cue mark, described back cavity is provided with multiple exhaust port.
The part that described indicating arm is positioned at back cavity rear portion is set with seal ring, and the indicating arm of described seal ring front portion is set with trim ring.
One end of described Returnning spring and the ends contact of packed-piston, the other end of Returnning spring contacts with trim ring.
The part that described indicating arm stretches out outside valve body is provided with snap ring.
The rear of described valve body is provided with the alarm triggered by indicating arm.
Compared with prior art the utility model has the following advantages: the end of packed-piston is connected with through back cavity and stretches out the indicating arm of valve body, indicating arm is provided with mark, cue mark is the scale of instruction filter core resistance, the rear portion of indicating arm is divided into A from back to front successively, B, C tri-districts, scale in A district paints green, scale in B district is coated with yellowly, scale in C district paints redness, along with motor runs, the impurity be attached on filter core increases, filter core resistance increases, before filter, oil pocket and the rear oil pocket pressure reduction of filter increase, both sides pressure suffered by packed-piston and Returnning spring bullet equilibrium of forces are broken, packed-piston moves backward together with indicating arm, when the green scale in A district stretches out outside valve body, illustrate that spool resistance is little, when the yellow scale in B district stretches out outside valve body, illustrate that spool resistance is larger, when the red scale in C district stretches out valve body, illustrate that filter core resistance reaches the resistance limit of regulation, before filter, oil pocket and the rear oil pocket of filter communicate, namely bypass valve is opened, the machine oil of filtered enters the lubricant housings of diesel engine, need to change or cleaning filter core, the friction pair so just impurity in machine oil can being avoided to enter diesel engine causes damage to motor at once, change or cleaning filter core after filter before oil pocket and filter after oil pocket pressure reduction diminish, packed-piston returns to original position under the effect of Returnning spring.
In sum, the utility model structure is simple, is convenient to the degree of fouling observing filter element, avoids not filtering machine oil and enter motor.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of prior art.
Embodiment
With reference to accompanying drawing, this bypass valve comprises valve body 1, the back cavity 12 being provided with ante-chamber 11 in valve body 1 and being communicated with ante-chamber 11, ante-chamber 11 communicates with oil pocket before filter cleaner filtering, back cavity 12 communicates with oil pocket after filter cleaner filtering, back cavity 12 is provided with multiple oil leak hole 13 be communicated with oil pocket after filter cleaner filtering, in the present embodiment, oil leak hole 13 is provided with 4-8, back cavity 12 is also provided with multiple exhaust port 14, exhaust port 14 communicates with oil pocket after filter, gas overflowing in back cavity 12 can be ensured when packed-piston 2 seals oil leak hole 11, make the pressure in back cavity 12 equal with oil pocket pressure after filter.The packed-piston 2 that chamber, front and back is separated is installed between ante-chamber 11 and back cavity 12, the end of packed-piston 2 is connected with through back cavity 12 and stretches out the indicating arm 7 of valve body 1, the part that indicating arm 7 is positioned at back cavity 12 rear portion is set with seal ring 5, the indicating arm 7 of seal ring 5 front portion is set with trim ring 4, i.e. trim ring 4 press seal circle 5, makes seal ring 5 be close to the inwall of back cavity 12.The part that indicating arm 7 is positioned at back cavity 12 is set with Returnning spring 3, and one end of Returnning spring 3 and the ends contact of packed-piston 2, the other end of Returnning spring 3 contacts with trim ring 4, and therefore trim ring 4 also has the effect of spring seat.Indicating arm 7 part of stretching out outside valve body 1 is provided with snap ring 6, and snap ring 6 pairs of indicating arms 7 have the effect of axially locating.
As shown in Figure 1, the rear portion of indicating arm 7 is provided with cue mark, cue mark is the scale of instruction filter core resistance, cue mark is positioned at valve body 1, A, B, C tri-districts are divided into from back to front successively at the rear portion of indicating arm 7 in the present embodiment, scale in A district paints green, and the scale in B district is coated with yellowly, and the scale in C district paints redness.This valve is arranged on engine oil filter, machine oil is from D to entering filter cleaner filtering ante-chamber, along with motor runs, the impurity be attached on filter core increases, and filter core resistance increases, oil pocket and oil pocket pressure reduction increase after filtering before filtering, both sides pressure suffered by packed-piston 2 and Returnning spring 3 play equilibrium of forces and are broken, packed-piston 2 moves backward together with indicating arm 7, when the green scale in A district stretch out valve body 1 outer time, illustrate that spool resistance is little; When the yellow scale in B district stretch out valve body 1 outer time, illustrate that spool resistance is larger; When the red scale in C district stretches out valve body 1, illustrate that filter core resistance reaches the resistance limit of regulation, after filtering front oil pocket and filter, oil pocket communicates, and namely bypass valve is opened, and the machine oil of filtered enters the lubricant housings of diesel engine, need change or cleaning filter core by horse back.Change or cleaning filter core after filter before oil pocket and filter after oil pocket pressure reduction diminish, packed-piston 2 returns to original position under the effect of Returnning spring 3.
As shown in Figure 1, the rear portion of valve body 1 is provided with the alarm 15 triggered by indicating arm 7, the on-off mode of alarm 15 has multiple, the distance that in the present embodiment, indicating arm 7 scale foremost equals between indicating arm 7 rearward end to alarm 15 trigger switch to the distance of indicating arm 7 rearward end, namely when filter element resistance reaches setting value, when the red scale in indicating arm 7 forefront C district stretches out valve body 1, the rearward end of indicating arm 7 contacts with the switch of alarm 15, thus is opened by alarm 15.
The utility model is not limited to above-mentioned embodiment, those skilled in the art, under the prerequisite not departing from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. a bypass valve, comprise valve body (1), the back cavity (12) being provided with ante-chamber (11) in valve body (1) and being communicated with ante-chamber (11), described ante-chamber (11) communicates with oil pocket before filter cleaner filtering, back cavity (12) communicates with oil pocket after filter cleaner filtering, described back cavity (12) is provided with multiple oil leak hole (13) be communicated with oil pocket after filter cleaner filtering, the packed-piston (2) that chamber, front and back is separated is installed between described ante-chamber (11) and back cavity (12), it is characterized in that: the end of described packed-piston (2) is connected with through back cavity (12) and stretches out the indicating arm (7) of valve body (1), the part that described indicating arm (7) is positioned at back cavity (12) is set with Returnning spring (3), the rear portion of described indicating arm (7) is provided with cue mark, described back cavity (12) is provided with multiple exhaust port (14).
2. bypass valve according to claim 1, is characterized in that: the part that described indicating arm (7) is positioned at back cavity (12) rear portion is set with seal ring (5), and the indicating arm (7) that described seal ring (5) is anterior is set with trim ring (4).
3. bypass valve according to claim 2, is characterized in that: one end of described Returnning spring (3) and the ends contact of packed-piston (2), the other end of Returnning spring (3) contacts with trim ring (4).
4. bypass valve according to claim 1, is characterized in that: described indicating arm (7) stretches out valve body (1) part outward and is provided with snap ring (6).
5. bypass valve according to claim 1, is characterized in that: the rear of described valve body (1) is provided with the alarm (15) triggered by indicating arm (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822648.2U CN204457929U (en) | 2014-12-23 | 2014-12-23 | A kind of bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822648.2U CN204457929U (en) | 2014-12-23 | 2014-12-23 | A kind of bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457929U true CN204457929U (en) | 2015-07-08 |
Family
ID=53664831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420822648.2U Expired - Fee Related CN204457929U (en) | 2014-12-23 | 2014-12-23 | A kind of bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614923A (en) * | 2015-06-03 | 2018-01-19 | Ｋｙｂ株式会社 | Decay valve and buffer |
-
2014
- 2014-12-23 CN CN201420822648.2U patent/CN204457929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614923A (en) * | 2015-06-03 | 2018-01-19 | Ｋｙｂ株式会社 | Decay valve and buffer |
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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: 20150708 |