CN205639128U - Hydraulic slide valve - Google Patents
Hydraulic slide valve Download PDFInfo
- Publication number
- CN205639128U CN205639128U CN201620279151.XU CN201620279151U CN205639128U CN 205639128 U CN205639128 U CN 205639128U CN 201620279151 U CN201620279151 U CN 201620279151U CN 205639128 U CN205639128 U CN 205639128U
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- China
- Prior art keywords
- valve
- valve port
- spool
- hydraulic efficiency
- slide valve
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model belongs to the hydrovalve field. In order to solve because the throttling groove of case and valve port control limit receive the erosive wear, and carry out whole replacement to the case, arouse the problem of the wasting of resources and cost improvement, the utility model provides a hydraulic slide valve. This hydraulic slide valve includes valve body and case, the case is equipped with throttling groove and valve port control limit, the case includes case base member, the valve port body and case cover, the case base member includes the connecting rod and is located the convex shoulder at connecting rod both ends, the convex shoulder with the valve port body with the case cover adopts detachable connections, just the valve port body more is close to the connecting rod, the throttling groove with valve port control limit is located valve port somatic part branch. The utility model discloses a hydraulic slide valve is through adopting split type structure, and not only simple structure, anti erosion effect are showing, can reduce the waste of resource and the improvement of cost moreover.
Description
Technical field
This utility model relates to a kind of hydraulic valve, is specifically related to a kind of hydraulic efficiency slide valve.
Background technology
At present, hydraulic system is widely used in the fields such as machine tool, engineering machinery and agricultural machinery.Liquid
Pressure guiding valve realizes one of critical elements of equipment and Mechanical course as hydraulic system, its control performance excellent
Bad have important impact to hydraulic system.
The control performance of hydraulic efficiency slide valve is affected by throttling channel size and port size.Work at hydraulic efficiency slide valve
During, the joint when solid particle flows quickly through valve port present in high-voltage oil liquid and fluid, to spool
Chute and valve port control edge position and cause erosive wear, cause the change of throttling channel size and port size, lead
The control performance causing hydraulic efficiency slide valve is degenerated.Conventional means is by the overall replacement to spool, it is ensured that spool
Throttling channel and valve port control integrity and the accuracy on limit, but can cause the waste of resource and the raising of cost.
Utility model content
In order to solve owing to the throttling channel of spool and valve port control limit by erosive wear, and spool is carried out whole
Body is replaced, the problem that the caused wasting of resources and cost improve, especially for large scale spool and special use
Being controlled the hydraulic efficiency slide valve of performance test in the throttling channel of spool and valve port are controlled limit, this utility model carries
Go out a kind of novel hydraulic guiding valve.This novel hydraulic guiding valve includes that valve body and spool, described spool are provided with throttling
Groove and valve port control limit, and described spool includes spool matrix, valve port and valve core housing, described spool matrix bag
Include connecting rod and be positioned at the convex shoulder at described connecting rod two ends；Described convex shoulder and described valve port and described valve core housing
Use removable connection, and described valve port is closer to described connecting rod；Described throttling channel and described valve port control
Limit processed is positioned at described valve port part.
Preferably, described removable be connected by threaded.
It is further preferred that described one of them threaded screw thread for execute must jail screw thread, coordinate with it
Screw thread is regular screw threads.
It is further preferred that described threaded employing Tang thread connects.
By using above-mentioned executing to connect by the threaded or Tang thread in jail, ensureing that spool dismounts easily
Under premise, can be effectively improved frequently commutates due to hydraulic efficiency slide valve makes spool be subject to periodically hydraulic shock power
Time connector between connect fastness.
Preferably, between described spool matrix and described valve port, and described valve port and described valve core housing
Between be provided with sealing member, for preventing high-voltage oil liquid along the axially and radially generation seepage of spool, thus avoid
The internal leakage problem of hydraulic efficiency slide valve.
It is further preferred that described sealing member uses O RunddichtringO.
Preferably, described valve port surface is provided with wear-resisting erosion resistant coating, improves throttling channel and valve port controls limit
Erosion resistance, extend its service life.
It is further preferred that described wear-resisting erosion resistant coating selects iron-base self-fluxing alloy coating.
Preferably, described convex shoulder is provided with positioning table, and described positioning table is positioned in convex shoulder near described connecting rod
One end.
Preferably, the end of described valve core housing is provided with outer-hexagonal.
Compared with conventional hydraulic guiding valve, hydraulic efficiency slide valve of the present utility model by the improvement of spool is created with
Lower beneficial effect:
1, by spool being improved to split-type structural, and throttling channel the most easily damaged for spool and valve port are controlled
While be located at valve port part so that when throttling channel and valve port control limit are destroyed, it is only necessary to valve port is entered
Row is replaced, and can meet hydraulic efficiency slide valve and throttling channel and valve port control the physical dimension requirement on limit, it is ensured that hydraulic pressure
The control characteristic of guiding valve, and it is greatly saved resource and cost.
2, it is provided with the valve port of different structure size throttling channel by replacement, same hydraulic valve can used
In the case of body, it is achieved the different control characteristics of hydraulic efficiency slide valve, it is ensured that valve port form is optimal with control characteristic
Coupling.For throttling channel and valve port for being specifically designed to spool controls the hydraulic efficiency slide valve of limit control performance test,
The impact on test of other sizes can be reduced to greatest extent, it is ensured that the unicity of test variable.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of this utility model hydraulic efficiency slide valve；
Fig. 2 is the partial sectional view after spool shown in Fig. 1 amplifies；
Fig. 3 is the sectional view in F-F direction in Fig. 2；
Fig. 4 is the close-up schematic view in Fig. 2 at A；
Fig. 5 is the stress schematic diagram that regular screw threads connect；
Fig. 6 is the structural representation of another kind of spool in this utility model；
Fig. 7 is the sectional view in H-H direction in Fig. 6.
Detailed description of the invention
Fig. 1 is the partial structurtes schematic diagram of this utility model hydraulic efficiency slide valve.This hydraulic efficiency slide valve includes valve body 1 He
Spool 2, valve body 1 is provided with valve body hole 11 and oil circuit X and oil circuit Y for fluid circulation.Spool 2
In valve body hole 11, the axis direction along valve body hole 11 moves left and right, oil circuit control X and the company of oil circuit Y
Logical state, and under the effect that throttling channel 222 and valve port control limit 223, it is achieved the control to fluid.
By the physical dimension of throttling channel 222 is adjusted, hydraulic efficiency slide valve can be made to have different control characteristics.
In hydraulic efficiency slide valve work process, present in high-voltage oil liquid and fluid, solid particle is by oil circuit X
During with oil circuit Y, throttling channel 222 and valve port to spool 2 control limit 223 and cause erosive wear, make hydraulic pressure
The control characteristic of guiding valve is affected.Throttling channel 222 and valve port in order to ensure spool 2 control limit 223
Integrity and accuracy, and reduce the waste to resource and cost, hydraulic efficiency slide valve is carried out by this utility model
Improving, the hydraulic efficiency slide valve after improvement need not that spool 2 carries out overall replacement just can make spool 2 have
Whole and throttling channel 222 and valve port control limit 223 accurately.Specifically, existing spool 2 usually monoblock type
Structure, and in this utility model, spool 2 uses split-type structural.
As in figure 2 it is shown, spool 2 includes spool matrix 21, valve port 22 and valve core housing 23, spool base
Body 21 includes connecting rod 211 and is positioned at the convex shoulder 212 at connecting rod 211 two ends, convex shoulder 212 be provided with
External screw thread 213 that valve port 22 and valve core housing 23 connect and in connection procedure, valve port 22 is carried out axle
Positioning table 214 to location.Wherein, positioning table 214 is positioned at external screw thread 213 afterbody, and near connecting rod
211.By being pointed to the control of the spacing of the locating surface of connecting rod 211 two ends positioning table 214, it is ensured that valve
The installation site of mouthful body 22 and repeat the location consistency installed.Additionally, at spool matrix 21 and valve port
It is provided with O RunddichtringO 24 between body 22, between the contact surface of valve port 22 and valve core housing 23, is provided with O type
Sealing ring 25, is possible to prevent to be positioned at oil circuit X (or oil circuit Y) and connect by arranging O RunddichtringO 24 and 25
High-voltage oil liquid at extension bar 211 is along the axially and radially mutual seepage of spool 2, thus avoids hydraulic efficiency slide valve
The problem of internal leakage.
Further preferably, it is provided with balancing slit 234 at valve core housing 23 outer round surface, makes to be positioned at valve core housing 23 same
On circumference, pressure oil everywhere is communicated with each other, and makes spool 2 in valve body hole 11 centralized positioning, eliminates due to spool 2
Circumferencial direction hydraulic coupling skewness and the hydraulic card clamping force that produces.In conjunction with Fig. 3, valve port in the present embodiment
22 are provided with four rectangle throttling channels 222, and inscribed circle diameter size d1 on four throttling channel bases is more than fixed
The outside dimension d2 of position platform 214, it is ensured that after assembling, throttling channel 222 and the valve port of valve port 22 control limit 223
Do not affected by positioning table 214.In other embodiments, according to the requirement of the control characteristic to hydraulic efficiency slide valve
Difference, can arrange the throttling channel 222 of different structure size and quantity, such as V-arrangement throttling channel or combination type
Throttling channel.
Spool 2 is improved to split-type structural by this utility model, and by the damageable zone throttling channel 222 of spool 2
Control limit 223 with valve port to be arranged on valve port 22.Therefore by the replacement to valve port 22, not only may be used
To meet hydraulic efficiency slide valve to throttling channel 222 and the physical dimension requirement on valve port control limit 223, it is ensured that hydraulic pressure is sliding
The control characteristic of valve, and resource and cost can be saved greatly.And it is provided with different structure by replacing
The valve port 22 of size throttling channel 222, can be in the case of using same valve body 1, it is achieved hydraulic pressure is sliding
The different control characteristics of valve.
In order to improve the fastness connected between each connector when spool 2 uses threaded, this utility model
Following further improvement has been carried out to threaded:
In the present embodiment, external screw thread 213 use execute must jail helicitic texture, female thread 221 He of valve port 22
The female thread 231 of valve core housing 23 uses regular screw threads structure, must be formed with common female thread by jail external screw thread by executing
Auxiliary connection there is shock-proof check Tudor.In conjunction with Fig. 4, use execute must jail screw thread external screw thread 213 tooth at the bottom of
Place is provided with 30 degree of tapered ramp, when external screw thread 213 is mutually tightened with female thread 221, and female thread 221
Crest at crown can withstand on tapered ramp tightly, produce bigger coupling mechanism force.Simultaneously as outward
The existence of the 30 degree of tapered ramp in screw thread 213 tooth bottom, makes external screw thread 213 and female thread 221 at contact point S
Normal force P that place produces becomes 60 degree with the angle of the axis of thread, and normal force P increases, and thus produces bigger
Locking frictional force.In conjunction with Fig. 5, when the extraneous tension force that valve port 22 is subject to is P0, spiral shell in the present embodiment
Normal force P=P0/cos60 ° of stricture of vagina=2P0, normal force P=P0/cos30 ° of normal thread=1.15P0, by
This ratio of locking frictional force produced is about 12 (the present embodiment): 7 (normal thread), therefore, and this enforcement
The threaded of example employing can obtain bigger locking frictional force.Additionally, executing in the present embodiment must jail spiral shell
Stricture of vagina is in occlusion process, and at the crest of female thread 221, crown deforms, and makes the load that threaded engagement face is born
It is evenly distributed in the helix total length of contact, increases stress ridge number, it is to avoid due to regular screw threads
During connection, bearing capacity is concentrated mainly on partial screw threads occlusal surface and the sliding tooth situation that easily occurs, thus improves spiral shell
The reliability that stricture of vagina connects.Therefore, this utility model is executed by employing must be firm threaded, improves spool 2
Shock-proof check when being impacted by high-voltage oil liquid takes off ability, it is ensured that the work stability and reliability of hydraulic efficiency slide valve.
Owing to valve port 22 is consumable accessory, therefore in the present embodiment, the female thread 221 of valve port 22 selects common spiral shell
Stricture of vagina structure, it is simple to processing.Additionally, valve core housing 23 uses above-mentioned connected mode with spool matrix 21 even equally
Connect, the most no longer do repeated description.
The present embodiment use execute must jail threaded be utilize rub anti-loose principle realize connecting between screw thread
The fastness connect.In other embodiments, it is also possible to use Tang thread according to thread size and processing situation
Connect, utilize the construction features of screw thread self to reach anti-loose purpose.When using Tang thread to connect, outer spiral shell
Stricture of vagina 213 is to include left-handed and two kinds of rotation direction screw threads of dextrorotation compound thread structure, and this external screw thread 213 is the most permissible
It is connected with levogyrate inner thread, it is also possible to be connected with dextrorotation female thread.Now, female thread 221 use left-handed (or
Dextrorotation) screw thread, female thread 231 uses dextrorotation (or left-handed) screw thread, is connected also with spool matrix 21 successively
Locking is realized by the outer-hexagonal 233 being positioned at valve core housing 23 end.This connection is similar to double nut locking, but
It is unlike common double nut check, when valve port 22 is occurred loosening by the impact of oil liquid pressure,
The direction that its pine moves back is exactly the tightening direction of valve core housing 23, and tightening of valve core housing 23 exactly prevents
The pine of valve port 22 moves back, and makes valve port 22 to get loose, thus realizes valve port 22 and spool matrix 21
Between connect tightness.
In other embodiments, spool 2 can also use non-threaded type of attachment as shown in Figure 6, valve port
22a and valve core housing 23a is provided with the through hole that internal diameter size is consistent, and the internal diameter size of this through hole and convex shoulder 212a
The outside dimension of cylindrical match.In conjunction with Fig. 7, valve port 22a and valve core housing 23a successively with spool matrix
21a is set with, and is axially positioned, by being positioned at valve port 22a by positioning table 214 and shaft end ring 26
On double wedge 224 and be positioned at the groove 216 at positioning table 214 and carry out radially positioning, prevent valve port 22a
It is moved relative to spool matrix 21a.Quickly tearing open of spool 2 is equally realized by this connected mode
Dress, and when using this connected mode, according to size and the structural requirement of spool 2, can be by valve port
Body 22a and valve core housing 23a is processed as one formula structure.
Optimize further, in order to improve wearability and the erosion wear resistance on valve port 22 surface, at valve port 22
One layer of wear-resisting erosion resistant coating of surface configuration, improve throttling channel 222 and valve port control limit 223 self wear-resisting and
Anti-erosion property.In the present embodiment, at one layer of iron-based of valve port 22 surface configuration from molten by the way of plating
Property alloy coat, make throttling channel 222 and valve port control surface, limit 223 and produce one layer of uniform wear-resisting Anti-erosion
Coating, improves erosion resistance, increases the service life.And by valve port 22 individually being carried out table
Surface strengthening processes, when can avoid spool entirety is carried out surface process, owing to spool axial dimension is relatively big,
And the problem causing size distortion.
Claims (10)
1. a hydraulic efficiency slide valve, including valve body and spool, described spool is provided with throttling channel and valve port controls limit, its
Being characterised by, described spool includes that spool matrix, valve port and valve core housing, described spool matrix include
Connecting rod and the convex shoulder being positioned at described connecting rod two ends；Described convex shoulder and described valve port and described spool
Set uses removable connection, and described valve port is closer to described connecting rod；Described throttling channel and described
Valve port controls limit and is positioned at described valve port part.
Hydraulic efficiency slide valve the most according to claim 1, it is characterised in that described removable be connected by screw thread
Connect.
Hydraulic efficiency slide valve the most according to claim 2, it is characterised in that described threaded one of them
Screw thread for execute must jail screw thread, the screw thread coordinated with it is regular screw threads.
Hydraulic efficiency slide valve the most according to claim 2, it is characterised in that described threaded employing Tang Shi spiral shell
Stricture of vagina connects.
Hydraulic efficiency slide valve the most according to claim 1, it is characterised in that described spool matrix and described valve port
Between body, and it is provided with sealing member between described valve port and described valve core housing.
Hydraulic efficiency slide valve the most according to claim 5, it is characterised in that described sealing member uses O type to seal
Circle.
Hydraulic efficiency slide valve the most according to claim 1, it is characterised in that described valve port surface is provided with wear-resisting
Erosion resistant coating.
Hydraulic efficiency slide valve the most according to claim 7, it is characterised in that described wear-resisting erosion resistant coating is selected
Iron-base self-fluxing alloy coating.
Hydraulic efficiency slide valve the most according to claim 1, it is characterised in that described convex shoulder is provided with positioning table, and
Described positioning table is positioned in convex shoulder the one end near described connecting rod.
Hydraulic efficiency slide valve the most according to claim 1, it is characterised in that outside the end of described valve core housing is provided with
Hexagonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620279151.XU CN205639128U (en) | 2016-04-06 | 2016-04-06 | Hydraulic slide valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620279151.XU CN205639128U (en) | 2016-04-06 | 2016-04-06 | Hydraulic slide valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205639128U true CN205639128U (en) | 2016-10-12 |
Family
ID=57067339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620279151.XU Withdrawn - After Issue CN205639128U (en) | 2016-04-06 | 2016-04-06 | Hydraulic slide valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205639128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757024A (en) * | 2016-04-06 | 2016-07-13 | 兰州理工大学 | Hydraulic slide valve |
-
2016
- 2016-04-06 CN CN201620279151.XU patent/CN205639128U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757024A (en) * | 2016-04-06 | 2016-07-13 | 兰州理工大学 | Hydraulic slide valve |
| CN105757024B (en) * | 2016-04-06 | 2017-06-06 | 兰州理工大学 | A kind of hydraulic efficiency slide valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20170606 |
|
| AV01 | Patent right actively abandoned |