CN202203467U - Long floor jack throttle valve capable of controlling lowering speed - Google Patents
Long floor jack throttle valve capable of controlling lowering speed Download PDFInfo
- Publication number
- CN202203467U CN202203467U CN201120291512XU CN201120291512U CN202203467U CN 202203467 U CN202203467 U CN 202203467U CN 201120291512X U CN201120291512X U CN 201120291512XU CN 201120291512 U CN201120291512 U CN 201120291512U CN 202203467 U CN202203467 U CN 202203467U
- Authority
- CN
- China
- Prior art keywords
- throttle valve
- valve seat
- lowering speed
- oil
- spring
- 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 - Lifetime
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Abstract
The utility model relates to a hoisting jack throttle valve, particularly to a long floor jack throttle valve capable of controlling lowering speed, which includes a throttle valve seat, and is characterized in that a throttle valve spring is arranged in a throttle valve seat hole; a steel ball is ejected on the throttle valve spring; a big oil outlet passage is outwardly arranged at the throttle valve seat hole; a small-diameter passage is arranged on the side of the throttle valve spring in the throttle valve seat hole; an oil suction port filter screen is arranged at an oil inlet of the throttle valve seat; and the diameter of the small-diameter passage is 0.3mm. When the throttle valve idles, the speed is quick, and the oil directly comes out of the big passage. When the pressure is high and the load is full, the steel ball downwardly pushes the spring, the oil returns through the small-diameter passage and slowly lowers, thereby enhancing the safety.
Description
Technical field:
The utility model relates to a kind of jack throttling valve.
Background technique:
It is direct current that existing horizontal jack refluxes, and does not have restricting means, causes speed fast, can not control, and increases operational danger, and safety in utilization is poor.
Summary of the invention:
Ability limited flow when the utility model provides a kind of pressure big, the length top for sleeping in throttle valve of the controlled lowering speed of increase Security.
The utility model is realized through following technological scheme: a kind of length of controlled lowering speed top for sleeping in throttle valve; Comprise throttle valve seat; Its major technique characteristic is to be provided with throttle valve spring in the throttle valve seat hole; Top one steel ball on the throttle valve spring, the throttle valve seat hole outwards is provided with fuel-displaced major path, and the throttle valve spring side is provided with the small aperture passage again in the throttle valve seat hole;
Oil-feed place of described throttle valve seat is provided with the inlet port filter screen; Said small aperture channel diameter is 0.3mm.
When throttle valve was unloaded, speed was fast, and oil directly comes out from major path.When pressure is big, when volume carries, the downward pressing spring of steel ball, oil passage oil return from the small aperture slowly lowers, and has increased Security.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
As shown in Figure 1, the length of this control lowering speed top for sleeping in throttle valve comprises throttle valve seat 1; Be provided with throttle valve spring 6 in the throttle valve seat hole; Top one steel ball 5 on the throttle valve spring, the throttle valve seat hole outwards is provided with fuel-displaced major path 8, and the throttle valve spring side is provided with small aperture passage 7 again in the throttle valve seat hole; The small aperture channel diameter is 0.3mm.Oil-feed place of described throttle valve seat is provided with inlet port filter screen 3; The inlet port filter screen is provided with back-up ring 2, and the inlet port filter screen has packing ring 4.
Claims (3)
1. the length of the controlled lowering speed top throttle valve that crouches; Comprise throttle valve seat, it is characterized in that being provided with throttle valve spring in the throttle valve seat hole, top one steel ball on the throttle valve spring; The throttle valve seat hole outwards is provided with fuel-displaced major path, and the throttle valve spring side is provided with the small aperture passage again in the throttle valve seat hole.
2. the length of a kind of controlled lowering speed as claimed in claim 1 top for sleeping in throttle valve is characterized in that throttle valve seat oil-feed place is provided with the inlet port filter screen.
3. the length of a kind of controlled lowering speed as claimed in claim 1 top for sleeping in throttle valve is characterized in that the small aperture channel diameter is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120291512XU CN202203467U (en) | 2011-08-11 | 2011-08-11 | Long floor jack throttle valve capable of controlling lowering speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120291512XU CN202203467U (en) | 2011-08-11 | 2011-08-11 | Long floor jack throttle valve capable of controlling lowering speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203467U true CN202203467U (en) | 2012-04-25 |
Family
ID=45967588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120291512XU Expired - Lifetime CN202203467U (en) | 2011-08-11 | 2011-08-11 | Long floor jack throttle valve capable of controlling lowering speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203467U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939408A (en) * | 2014-04-16 | 2014-07-23 | 江苏海力达机电制造有限公司 | Side valve type flow switching throttle valve |
| CN104930232A (en) * | 2015-05-20 | 2015-09-23 | 天津斯维克阀业有限公司 | Trickle control valve |
| CN105782525A (en) * | 2016-05-12 | 2016-07-20 | 宁波市加力特机械有限公司 | Pressure relief valve for platform car |
| CN106829786A (en) * | 2016-12-22 | 2017-06-13 | 合肥迅达电器有限公司 | A kind of hand hydraulic jack for possessing filtering machine oil effect |
-
2011
- 2011-08-11 CN CN201120291512XU patent/CN202203467U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939408A (en) * | 2014-04-16 | 2014-07-23 | 江苏海力达机电制造有限公司 | Side valve type flow switching throttle valve |
| CN103939408B (en) * | 2014-04-16 | 2016-05-11 | 江苏海力达机电制造有限公司 | A kind of side valve type flow switch choke valve |
| CN104930232A (en) * | 2015-05-20 | 2015-09-23 | 天津斯维克阀业有限公司 | Trickle control valve |
| CN105782525A (en) * | 2016-05-12 | 2016-07-20 | 宁波市加力特机械有限公司 | Pressure relief valve for platform car |
| CN106829786A (en) * | 2016-12-22 | 2017-06-13 | 合肥迅达电器有限公司 | A kind of hand hydraulic jack for possessing filtering machine oil effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |
|
| CX01 | Expiry of patent term |