CN205278463U - Check valve with steel ball valve element - Google Patents
Check valve with steel ball valve element Download PDFInfo
- Publication number
- CN205278463U CN205278463U CN201520929189.2U CN201520929189U CN205278463U CN 205278463 U CN205278463 U CN 205278463U CN 201520929189 U CN201520929189 U CN 201520929189U CN 205278463 U CN205278463 U CN 205278463U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- spool
- valve
- check valve
- control piston
- 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 check valve with steel ball valve element to solve current check valve and adopt the easy problem of leaking of the long -time use of cone valve core. Check valve with steel ball valve element including the valve body, is equipped with left cavity and right cavity respectively in the valve body, it has the oil -out to open on the left cavity, and open in the left side that lies in control piston on the right cavity has the oil inlet, and open on the right side that lies in the piston has control port, is equipped with the connecting hole between left cavity and the right cavity, and the department is equipped with annular disk seat at the connecting hole, is equipped with the case that can open and close the connecting hole in the left cavity, is equipped with the control piston that the control case was opened and close in the right cavity, the interior circle of disk seat has the internal taper ring, the case be steel ball valve element, steel ball valve element's excircle can with internal taper loop -line contact close junction hole.
Description
Technical field
The utility model relates to check valve technology, in particular to a kind of check valve with steel ball spool.
Background technology
The lifting of harvester header adopts hydrostatic control usually, hydraulic efficiency system adopts plunger hydraulic oil cylinder usually, and owing to spool-type valves structure is simple, cost is low, therefore many employings spool-type valves when controlling plunger tpe cylinder movement, but because there is tolerance clearance between valve rod and valve opening in spool-type valves, the therefore just inevitable internal leakage problem bringing valve. Present way installs the common check valve with steel ball spool, although this solves the internal leakage problem of spool-type valves, but due to the hydro-pump of system it is the pressure operation set up at pilot overflow valve, and pilot overflow valve set pressure is higher, make hydro-pump power loss bigger, the power of loss all changes into heat, reaper is generally long-time work, Working environment temperature is higher again, system heat generation can be caused so serious, reduce work-ing life. In addition, current check valve generally adopts poppet valve core, and tired creep strain can occur poppet valve core after the work long period, the identical degree between poppet valve core and valve seat is deteriorated, causes and gap occur between conical valve base seal strip and poppet valve core, cause the leakage of trace.
Practical novel content
The utility model is intended to provide a kind of check valve with steel ball spool, adopts poppet valve core to use the problem of easily leakage for a long time to solve existing check valve.
The check valve with steel ball spool in this scheme, comprise valve body, left chamber and room, right chamber it is respectively equipped with in valve body, left chamber has oil outlet, the left side being positioned at control piston on room, right chamber has oil-in, the right side being positioned at piston has control oil mouth, it is provided with between left chamber and room, right chamber and connects hole, the valve seat of ring-type it is provided with in connection hole, the spool in connection hole able to turn on or off it is provided with in left chamber, indoor, right chamber are provided with the control piston that control spool opens and closes, the inner circle of described valve seat has internal taper ring, described spool is steel ball spool, the cylindrical of steel ball spool can contact with internal taper loop wire to close and connect hole.
The utility model has the advantage of: spool adopts steel ball spool, the manufacturing process of steel ball can guarantee that its form tolerance controls in very little scope, and surfaceness is little, when control piston opens steel ball spool, steel ball two ends pressure is in a basic balance, even if therefore long-time use also is not easy to occur to leak.
Further, steel ball spool side and a spring mounting seat removably connect, and spring mounting seat is fixed with spring fitting bar, the periphery of spring fitting bar is provided with spring, spring one end is fixed on spring mounting seat, and the other end is fixed on the first plug screw, and described first plug screw is connected with valve body screw thread. Owing to spring life-time service easily lost efficacy, therefore in order to be convenient for changing, be threaded the first plug screw on valve body, it is necessary to during replacing, it is only necessary to revolving lower first plug screw can take out inefficacy spring.
Further, having two oilholes on steel ball spool, control piston inside has plunger shaft, and is provided with a circle off-load annular groove in control piston periphery, has the throttling oilhole communicated with plunger shaft on off-load annular groove.
The working principle of design of this scheme this kind of discharging type is: for the hydraulic control system of harvester header, when hydro-pump pressure oil output, when the handle of manipulation reversing valve makes reversing valve be in left position, high-pressure oil exports from commutation valve port, entering the oil-in mouth of this scheme check valve, when high-pressure oil enters in valve body through oil-in mouth, steel ball spool moves to left, high-pressure oil enters plunger tpe oil cylinder from control oil mouth through one-way throttle valve, and plunger stretches out and drives the ceding of Taiwan to rise.
Reversing valve is in middle position, and commutation valve port is closed, and steel ball spool is closed under cylinder oil effect, and oil cylinder oil inlet and oil return passage is disconnected, and the ceding of Taiwan stops in predetermined position. Because the spillage of the check valve of this scheme is very little, the quiet heavy amount of the ceding of Taiwan can meet the requirement of reaper. At this moment, the fluid that hydro-pump exports flows back to fuel tank through being in the surplus valve of unloading condition. When the ceding of Taiwan need to decline, handling reversing valve handle and make reversing valve be in right position, the pressure oil that hydro-pump exports exports the control oil mouth of the check valve entering this scheme from commutation valve port, promotes control piston to move to left, backs down spool, make oil cylinder start oil return, and the ceding of Taiwan declines. At this moment the off-load annular groove on control piston and oil-in are connected, control oil and fuel tank communicate, due to the throttling action of the throttling oilhole on control piston, two ends, control piston left and right are made to there is pressure reduction and produce thrust to the left, back down steel ball spool, the hydraulic efficiency oil that such hydro-pump exports returns fuel tank by the check valve of this scheme, hydro-pump is in unloading condition substantially, this addresses the problem common check valve system oil pressure when plunger tpe oil cylinder declines and increases problems such as causing watt consumption increase, fluid heating.
Further, be threaded on corresponding with control piston on valve body position the 2nd plug screw. 2nd plug screw is set, put need change control piston time, it is only necessary to namely replaceable under the 2nd plug screw is revolved, handled easily.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below by embodiment, the utility model is described in further detail:
Reference numeral in Figure of description comprises: the first plug screw 1, bonded washer 2, spring 3, spring support 4, steel ball 5, valve seat 6, control piston 7, valve body 8, O RunddichtringO 9, the 2nd plug screw 10.
Embodiment is substantially as shown in Figure 1: the present embodiment, with the check valve of steel ball spool, is respectively equipped with left chamber and room, right chamber, left chamber has oil outlet in valve body, oil outlet is inner small and outside big ladder hole. The left side being positioned at control piston on room, right chamber has oil-in, and the right side being positioned at piston has control oil mouth, and control oil mouth is also ladder hole, and is provided with O RunddichtringO at control oil port.
It is provided with between left chamber and room, right chamber and connects hole, the valve seat of ring-type it is provided with in connection hole, the spool being provided with connection hole able to turn on or off in left chamber, indoor, right chamber are provided with the control piston that control spool opens and closes, and position corresponding with control piston on valve body has been threaded the 2nd plug screw.
In the present embodiment, the inner circle of valve seat has internal taper ring, and spool is steel ball spool, and the cylindrical of steel ball spool can contact with internal taper loop wire to close and connect hole. Steel ball spool side and a spring mounting seat removably connect, being fixed with spring fitting bar on spring mounting seat, the periphery of spring fitting bar is provided with spring, and spring one end is fixed on spring mounting seat, the other end is fixed on the first plug screw, and described first plug screw is connected with valve body screw thread.
Having two oilholes in the present embodiment on steel ball spool, control piston inside has plunger shaft, and is provided with a circle off-load annular groove in control piston periphery, has the throttling oilhole communicated with plunger shaft on off-load annular groove.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this. Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, it is also possible to make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability that the utility model is implemented. The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification sheets etc. record the content that may be used for explaining claim.
Claims (4)
1. with the check valve of steel ball spool, comprise valve body, left chamber and room, right chamber it is respectively equipped with in valve body, left chamber has oil outlet, the left side being positioned at control piston on room, right chamber has oil-in, the right side being positioned at piston has control oil mouth, it is provided with between left chamber and room, right chamber and connects hole, the valve seat of ring-type it is provided with in connection hole, the spool in connection hole able to turn on or off it is provided with in left chamber, indoor, right chamber are provided with the control piston that control spool opens and closes, it is characterized in that, the inner circle of described valve seat has internal taper ring, described spool is steel ball spool, the cylindrical of steel ball spool can contact with internal taper loop wire to close and connect hole.
2. the check valve with steel ball spool according to claim 1, it is characterized in that: steel ball spool side and a spring mounting seat removably connect, spring mounting seat is fixed with spring fitting bar, the periphery of spring fitting bar is provided with spring, spring one end is fixed on spring mounting seat, the other end is fixed on the first plug screw, and described first plug screw is connected with valve body screw thread.
3. the check valve with steel ball spool according to claim 2, it is characterized in that: on steel ball spool, have two oilholes, control piston inside has plunger shaft, and is provided with a circle off-load annular groove in control piston periphery, has the throttling oilhole communicated with plunger shaft on off-load annular groove.
4. the check valve with steel ball spool according to claim 3, it is characterised in that: be threaded on position corresponding with control piston on valve body the 2nd plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929189.2U CN205278463U (en) | 2015-11-20 | 2015-11-20 | Check valve with steel ball valve element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929189.2U CN205278463U (en) | 2015-11-20 | 2015-11-20 | Check valve with steel ball valve element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205278463U true CN205278463U (en) | 2016-06-01 |
Family
ID=56063041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520929189.2U Expired - Fee Related CN205278463U (en) | 2015-11-20 | 2015-11-20 | Check valve with steel ball valve element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205278463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559253A (en) * | 2017-08-30 | 2018-01-09 | 上海中驰自动控制技术有限公司 | A kind of compound liquid control one-way throttle valve of Novel threaded plug-in |
-
2015
- 2015-11-20 CN CN201520929189.2U patent/CN205278463U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559253A (en) * | 2017-08-30 | 2018-01-09 | 上海中驰自动控制技术有限公司 | A kind of compound liquid control one-way throttle valve of Novel threaded plug-in |
| CN107559253B (en) * | 2017-08-30 | 2019-12-31 | 上海中驰自动控制技术有限公司 | Novel screw thread cartridge formula compound liquid accuse one-way throttle valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20161120 |