CN207333172U - A kind of Novel plunger pump static pressure supports side cover - Google Patents
A kind of Novel plunger pump static pressure supports side cover Download PDFInfo
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- CN207333172U CN207333172U CN201721410895.1U CN201721410895U CN207333172U CN 207333172 U CN207333172 U CN 207333172U CN 201721410895 U CN201721410895 U CN 201721410895U CN 207333172 U CN207333172 U CN 207333172U
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- side cover
- oil
- cover
- static pressure
- pressure support
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Abstract
The utility model discloses a kind of Novel plunger pump static pressure to support side cover, including side cover outer cover and cover bush, cover bush is the external part that its inner side end of cover rim extends outside side cover, cover bush is provided with cavity along between its axial direction and side cover outer cover, covered outside side cover and oil duct system is set, static pressure support system is set on cover bush, and oil duct system is connected with static pressure support system.Static pressure support system includes oil road and several throttling roads, and oil road is set along the axial direction of cover bush, one end connection oil duct system of oil road；The one end in throttling road is connected with oil road, and the other end is connected on the side wall of inner cavity.By static pressure support concept, static pressure support system is set in side cover, makes to produce oil film on the side wall of side cover cavity, prevented from becoming directly contact generation friction between gauge rod and side cover cavity, solve the problems, such as that side cover is easy to wear.
Description
Technical field
It the utility model is related to plunger pump field, and in particular to a kind of Novel plunger pump static pressure supports side cover.
Background technology
Plunger pump is an important device of hydraulic system, it is moved back and forth by plunger in cylinder body, makes seal operation
The volume of cavity volume changes to realize oil suction pressure oil.Side cover is the important component of Variable plunger pump, because variable piston
The change gauge rod of pump will do the axial movement of high frequency in side cover, be applied so becoming gauge rod in the movement of side cover medium-high frequency due to becoming gauge rod
The power for being added in side cover is lateral, i.e., the power of one radial direction, so after prolonged movement, side cover can be caused easily to grind
Damage.
In the prior art, it is exactly whole side cover after machining, heat treatment of integrally taking away, improves the hard of side cover
Degree, wearability etc., improve the service life of side cover.But side cover heat treatment only improves the hardness, resistance to of side cover to a certain degree
Mill property etc., is not unlimited increase, by much time using, still can produce abrasion to the side wall of side cover.Existing side
Lid is to cover to set oil inlet and oil inlet pipe outside side cover, by become gauge rod along side cover cavity outwards axially move when, will
Hydraulic oil sucks side cover from oil inlet, is flowed into by oil inlet pipe in side cover cavity, realizes oil absorptive function；When becoming gauge rod along side cover
When cavity inwardly axially moves, pressure oil function is realized, but due to prolonged reciprocating, change gauge rod and side cover can be made
The side wall of cavity produces friction, wears side cover, influences the service life of side cover and the overall performance of plunger pump.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of Novel plunger pump static pressure support-side
Lid, by static pressure support concept, static pressure support system is set in side cover, makes to produce oil film on the side wall of side cover cavity, prevents
Become directly contact generation friction between gauge rod and side cover cavity, solve the problems, such as that side cover is easy to wear.To realize above-mentioned practicality
New purpose, the technical solution that the utility model is taken are as follows：
A kind of Novel plunger pump static pressure supports side cover, including side cover outer cover and cover bush, the cover bush are side cover
The external part that its inner side end of outer cover rim extends, the cover bush are had time along its axial set between the side cover outer cover
Chamber, the side cover cover the oil duct system that sets, static pressure support system, the oil duct system and institute are set on the cover bush outside
State the connection of static pressure support system.
Preferably, its axial direction of the outer cover rim of the side cover is provided with through hole, and the through hole is through the side cover outer cover and connects
The cavity, concave surface is provided with the end face outside of the side cover outer cover of the through hole end thereof contacts.
Preferably, the oil duct system includes the first oil duct system and the second oil duct system, and the first oil duct system is set
The first half in the side cover outer cover is put, the second oil duct system is arranged on the lower half of the side cover outer cover.
Preferably, the first oil duct system includes oil inlet and the first oil input channel, the oil inlet and described first into
Oil duct connects, and first oil input channel is circumferentially disposed along the side cover outer cover, and the upper end of first oil input channel extends to institute
The upper surface of side cover outer cover is stated, the upper end of the first oil input channel is closed by technique plug, the lower end of first oil input channel connection the
One oil outlet, first oil outlet are arranged on the bottom wall of the cavity.
Preferably, the second oil duct system includes the second oil input channel, and second oil input channel is along the side cover outer cover
Circumferentially disposed, the lower end of second oil input channel extends to the lower face of the side cover outer cover, and the lower end of the second oil input channel is by work
Skill plug is closed, and the upper end of second oil input channel connects the second oil outlet, and second oil outlet is arranged in the cavity
Bottom wall on.
Preferably, the static pressure support system includes oil road and several throttling roads, and the oil road is along the side cover
The axial setting of bushing, one end of the oil road connect the oil duct system；The one end in the throttling road and the oil road
Connection, the other end are connected on the side wall of the inner cavity.
Preferably, the static pressure support system is arranged on the upper end that the cover bush is located above the cavity；Or
The static pressure support system is arranged on the bottom that the cover bush is located at below the cavity；Or the static pressure support system
It is arranged on the upper and lower end of the cover bush.
Preferably, several balancing slits, circumferential cloth of the balancing slit along the cavity are set on the side wall of the cavity
Put.
Preferably, the end face outside of the side cover outer cover sets fabrication hole, one end of the fabrication hole and the oil road
Connection, the other end of the fabrication hole are closed by technique plug.
Preferably, the static pressure support side cover further includes seal assembly, and the seal assembly includes seal and sealing connects
Fitting, the sealed connecting component are connected through a screw thread with the through hole, and the seal is installed on the sealed connecting component, institute
State seal to be placed in the concave surface and close the through hole, sealing ring be additionally provided between the seal and the concave surface,
The quantity of the seal is at least 1, and sealing ring can prevent hydraulic oil from oozing out.
Relative to the prior art, the utility model achieves beneficial technique effect：
The plunger pump static pressure support side cover of the utility model covers outside side cover sets oil duct system and on cover bush
Static pressure support system is set, is connected by oil duct system with static pressure support system, hydraulic oil enters static pressure branch through oil channel system
Support system, makes to produce oil lamella on the side wall of side cover cavity, avoids directly contacting between change gauge rod and the side wall of cavity.Oil duct system
Uniting includes the first oil duct system and the second oil duct system, in the plunger pump course of work, is outwards done along side cover cavity by becoming gauge rod
It is axially moved, hydraulic oil is sucked in cavity from the first oil duct system, then enters static pressure support system by the second oil duct system
System, when hydraulic oil flows in static pressure support system, throttling road plays the role of fixed damping, and hydraulic oil enters from oil road
Throttle behind road, the oil pressure in oil road is changed after overdamp, the hydraulic oil after pressure change occurs and is transported to sky
Between the side wall and change gauge rod of chamber, stable oil film is formd, side cover cavity is avoided and becomes generation contact friction between gauge rod, drop
The low abrasion of side cover.
The through hole of side cover is sealed by seal and sealed connecting component, can prevent hydraulic oil from being oozed out from side cover, is sealed
Part uses at least one, it can be ensured that sealing it is firm.Sealing ring is placed in the concave surface in the end face outside of side cover outer cover, can be with
Prevent sealing ring from moving, facilitate sealing ring to install.
Brief description of the drawings
Fig. 1 is the structural profile illustration that the utility model plunger pump static pressure supports side cover；
Fig. 2 is that the utility model plunger pump static pressure supports side cover and becomes the structure diagram of gauge rod assembling.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments to this
Utility model is further elaborated, but the scope of the requires of the utility model protection is not limited to following specific implementations
Example.
Embodiment 1：
As shown in Figure 1, a kind of Novel plunger pump static pressure support side cover, including side cover outer cover 1 and cover bush 2, side cover lining
The external part that set 2 extends for side cover outer cover 1 along its inner side end, cover bush 2 are set along between its axial direction and side cover outer cover 1
There is cavity 10, cavity 10 is provided on cover bush, and the inner side end of side cover outer cover 1 is the bottom wall 101 of cavity.The side cover
Outer cover 1 is provided with through hole along its axial direction, and the through hole is arranged on the center or remaining position of side cover outer cover 1, described
Through hole is through the side cover outer cover 1 and is connected to the cavity 10, connects the through hole and the cavity 10, with the through hole
The end face outside of the side cover outer cover 1 of end thereof contacts is provided with concave surface 18, and the size of concave surface 18 is more than the size of the through hole,
One end of through hole is arranged in concave surface 18.It is to be integrally formed between side cover outer cover 1 and cover bush 2 in the present embodiment.
Oil duct system is set on side cover outer cover 1, static pressure support system, oil duct system and static pressure branch are set on cover bush 2
Support system connects.Side cover outer cover 1 is divided into the first half and lower half along its axial center line, and the oil duct system includes the first oil
Road system and the second oil duct system, the first oil duct system are arranged on the first half of the side cover outer cover 1, second oil duct
System is arranged on the lower half of the side cover outer cover 1.
The first oil duct system includes 3 and first oil input channel 4 of oil inlet, and oil inlet 3 is arranged on 1 first half of side cover outer cover
Side wall on, the oil inlet 3 and first oil input channel 4 connect, week of first oil input channel 4 along the side cover outer cover 1
To setting, i.e. the first oil input channel 4 is set along the short transverse of side cover outer cover 1, and the upper end of first oil input channel 4 extends to described
The upper surface of side cover outer cover 1, the upper end of the first oil input channel 4 are closed by technique plug 12, the lower end connection of first oil input channel 4
First oil outlet 5, first oil outlet 5 are arranged on the bottom wall 101 of the cavity 10.The second oil duct system includes the
Two oil input channels 6, second oil input channel 6 is circumferentially disposed along the side cover outer cover 1, i.e. the second oil input channel 6 is along side cover outer cover 1
Short transverse is set, and the lower end of second oil input channel 6 extends to the lower face of the side cover outer cover 1, under the second oil input channel 6
End is closed by technique plug 12, and the upper end of second oil input channel 6 connects the second oil outlet 7, and second oil outlet 7 is arranged on
On the bottom wall 101 of the cavity 10.
The static pressure support system includes oil road 8 and several throttling roads 9, and the oil road 8 is along the cover bush 2
Axial setting, one end of the oil road 8 connects the second oil input channel 6；The one end in the throttling road 9 connects with the oil road 8
Connect, throttling 9 other end of road is connected on the side wall of the inner cavity 10, and throttling road 9 is vertical along the short transverse of cover bush 2
Or it is obliquely installed.Cover bush 2 is included positioned at the upper end of the top of cavity 10 and positioned at the bottom of the lower section of cavity 10, this implementation
In example, the static pressure support system is arranged on the cover bush 2 positioned at the bottom of the lower section of cavity 10.
As shown in Fig. 2, in the plunger pump course of work, outwards axially moved along the cavity 10 of side cover by becoming gauge rod 20,
Hydraulic oil is sucked from oil inlet 3, the first oil outlet 5 connected by 4 lower end of the first oil input channel is flowed into cavity 10, Ran Houjing
Cross the second oil outlet 7 to flow into the second oil input channel 6, hydraulic oil is continued to flow into static pressure support system by the second oil input channel 6, liquid
When pressure oil flows in static pressure support system, throttling road 9 plays the role of fixed damping, and hydraulic oil enters from oil road 8 to be saved
After runner 9, the oil pressure in oil road 8 is changed after overdamp, the hydraulic oil after pressure change occurs and is transported to sky
Stable oil film is formd between the side wall and change gauge rod 20 of chamber 10；Inwardly axially move along side cover cavity 10 when becoming gauge rod 20
When, realize pressure oil function.When change gauge rod 20 moves reciprocatingly in cavity 10, oil film can be to avoid side cover cavity 10 and change gauge rod
Contact friction is produced between 20, reduces the abrasion of side cover.
Several balancing slits 11, circumferential cloth of the balancing slit 11 along the cavity 10 are set on the side wall of the cavity 10
Put.When change gauge rod 20 does high-frequency reciprocating movement in cavity 10 under working status, balancing slit 11 can be made up because mismachining tolerance
Interim card caused by unbalance loading under caused action of hydraulic force.
The end face outside of the side cover outer cover 1 sets fabrication hole 13, and one end of the fabrication hole 13 connects with the oil road 8
Connect, the other end of the fabrication hole 13 is closed by technique plug 12.The first oil input channel 4 of technique plug 12 and closing of fabrication hole 13
And second the technique plug 12 of oil input channel 7 be to ensure to keep perforation between each oil duct, stablize oil pressure.
The static pressure support side cover further includes seal assembly, and the seal assembly includes seal 14 (15) and is tightly connected
Part 16, the sealed connecting component 16 are connected through a screw thread with the through hole, and sealed connecting component 16 can select the screw thread knot such as stud
Structure part.The seal 14 (15) is installed on the sealed connecting component 16, and the seal 14 (15) is placed in the concave surface
In 18 and the through hole is closed, sealing ring 17, the sealing are additionally provided between the seal 14 (15) and the concave surface 18
The quantity of part 14 (15) is at least 1, and sealing ring 17 can prevent hydraulic oil from oozing out.By seal 14 (15) and it is tightly connected
Part 16 seals the through hole of side cover outer cover 1, can prevent hydraulic oil from being flowed out from side cover.Sealing ring 17 is placed in the outer of side cover outer cover 1
It in concave surface 18 on side end face, can prevent sealing ring 17 from moving, facilitate sealing ring 17 to install.
The seal 14 (15) of the present embodiment is 2, including first seal 15 and second seal 14, first seal
15 and second seal 14 successively close to being tightened on sealed connecting component 16,2 seals 14 (15) may insure the jail of sealing
Gu.
Stop screw 19 is also equipped with the side end face of the side cover outer cover 1 of the present embodiment, stop screw 19 is to installed in side
The position-limiting action that the other parts covered are axially moved.
The plunger pump static pressure support side cover of the utility model sets oil duct system and in cover bush 2 on side cover outer cover 1
Upper setting static pressure support system, is connected, hydraulic oil enters static pressure through oil channel system by oil duct system with static pressure support system
Support system, makes to produce oil lamella on the side wall of side cover cavity 10, avoids directly connecing between change gauge rod 20 and the side wall of cavity 10
Touch, prevent inner cavity 10 from the service life that excessive abrasion influences side cover occur.
Embodiment 2
The embodiment only describes the difference with above-described embodiment, remaining technical characteristic is same as the previously described embodiments.This
The side cover outer cover 1 and cover bush 2 of embodiment are split shaping (not shown)s, and the shell of side cover outer cover 1 and plunger pump is consolidated
Fixed connection, compresses cover bush 2 by side cover outer cover 1, cover bush 2 is placed in shell, make side cover outer cover 1 and cover bush
2 realize cooperation installation.
Embodiment 3：
The embodiment only describes the difference with above-described embodiment, remaining technical characteristic is same as the previously described embodiments.This
The static pressure support system of embodiment is arranged on the upper end (not shown) of the cover bush 2.
Embodiment 4：
The embodiment only describes the difference with above-described embodiment, remaining technical characteristic is same as the previously described embodiments.This
Embodiment is respectively provided with the static pressure support system in the upper and lower end of the cover bush 2 and sets (not to be shown in figure
Go out).
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
Apply mode make a change and modification.Therefore, the utility model is not limited to embodiment disclosed and described above, right
Some modifications and changes of utility model should also be as falling into the scope of the claims of the utility model.In addition, although
Some specific terms are used in this specification, but these terms are merely for convenience of description, utility model do not formed
Any restrictions.
Claims (10)
1. a kind of Novel plunger pump static pressure supports side cover, including side cover outer cover and cover bush, the cover bush is outside side cover
The external part that its inner side end of cover rim extends, the cover bush are had time along its axial set between the side cover outer cover
Chamber, it is characterised in that the oil duct system that sets is covered outside the side cover, static pressure support system is set on the cover bush, it is described
Oil duct system is connected with the static pressure support system.
A kind of 2. Novel plunger pump static pressure support side cover according to claim 1, it is characterised in that the outer cover rim of the side cover
Its axial direction is provided with through hole, and the through hole is through the side cover outer cover and connects the cavity, with the through hole end thereof contacts
The end face outside of the side cover outer cover is provided with concave surface.
A kind of 3. Novel plunger pump static pressure support side cover according to claim 2, it is characterised in that the oil duct system bag
The first oil duct system and the second oil duct system are included, the first oil duct system is arranged on the first half of the side cover outer cover, described
Second oil duct system is arranged on the lower half of the side cover outer cover.
A kind of 4. Novel plunger pump static pressure support side cover according to claim 3, it is characterised in that the first oil duct system
System includes oil inlet and the first oil input channel, and the oil inlet is connected with first oil input channel, and first oil input channel is described in
Side cover outer cover it is circumferentially disposed, the upper end of first oil input channel extends to the upper surface of the side cover outer cover, described first into
The lower end of oil duct connects the first oil outlet, and first oil outlet is arranged on the bottom wall of the cavity.
A kind of 5. Novel plunger pump static pressure support side cover according to claim 3, it is characterised in that the second oil duct system
System includes the second oil input channel, and second oil input channel is circumferentially disposed along the side cover outer cover, the lower end of second oil input channel
The lower face of the side cover outer cover is extended to, the upper end of second oil input channel connects the second oil outlet, second oil outlet
It is arranged on the bottom wall of the cavity.
A kind of 6. Novel plunger pump static pressure support side cover according to claim 2, it is characterised in that the static pressure support system
System includes oil road and several throttling roads, and the oil road is set along the axial direction of the cover bush, and the one of the oil road
End connects the oil duct system；The one end in the throttling road is connected with the oil road, and the other end is connected to the side of the cavity
On wall.
A kind of 7. Novel plunger pump static pressure support side cover according to claim 2, it is characterised in that the static pressure support system
System is arranged on the upper end that the cover bush is located above the cavity；Or the static pressure support system is arranged on the side cover
Bushing is located at the bottom below the cavity；Or the static pressure support system is arranged on the upper end of the cover bush with
End.
A kind of 8. Novel plunger pump static pressure support side cover according to claim 2, it is characterised in that the side wall of the cavity
It is upper setting several balancing slits, the balancing slit along the cavity circumferentially.
9. a kind of Novel plunger pump static pressure support side cover according to claim 6, it is characterised in that the side cover outer cover
End face outside sets fabrication hole, and one end of the fabrication hole is connected with the oil road, and the other end of the fabrication hole is by technique
Plug is closed.
A kind of 10. Novel plunger pump static pressure support side cover according to claim 2, it is characterised in that the static pressure support
Side cover further includes seal assembly, and the seal assembly includes seal and sealed connecting component, and the sealed connecting component leads to described
Hole is connected through a screw thread, and the seal is installed on the sealed connecting component, and the seal is placed in the concave surface and seals
The through hole is closed, sealing ring is additionally provided between the seal and the concave surface, the quantity of the seal is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410895.1U CN207333172U (en) | 2017-10-26 | 2017-10-26 | A kind of Novel plunger pump static pressure supports side cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410895.1U CN207333172U (en) | 2017-10-26 | 2017-10-26 | A kind of Novel plunger pump static pressure supports side cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333172U true CN207333172U (en) | 2018-05-08 |
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ID=62363058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721410895.1U Active CN207333172U (en) | 2017-10-26 | 2017-10-26 | A kind of Novel plunger pump static pressure supports side cover |
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| Country | Link |
|---|---|
| CN (1) | CN207333172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642486A (en) * | 2017-10-26 | 2018-01-30 | 佛山市科达液压机械有限公司 | A kind of Novel plunger pump static pressure supports side cover |
-
2017
- 2017-10-26 CN CN201721410895.1U patent/CN207333172U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642486A (en) * | 2017-10-26 | 2018-01-30 | 佛山市科达液压机械有限公司 | A kind of Novel plunger pump static pressure supports side cover |
| CN107642486B (en) * | 2017-10-26 | 2024-03-12 | 佛山市科达液压机械有限公司 | Novel plunger pump static pressure supports side cap |
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