CN211202466U - Pressure adjusting device of hydraulic system - Google Patents
Pressure adjusting device of hydraulic system Download PDFInfo
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- CN211202466U CN211202466U CN201922426696.5U CN201922426696U CN211202466U CN 211202466 U CN211202466 U CN 211202466U CN 201922426696 U CN201922426696 U CN 201922426696U CN 211202466 U CN211202466 U CN 211202466U
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- valve rod
- hole
- pressure
- valve
- mounting hole
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Abstract
The utility model discloses a pressure adjusting device of a hydraulic system, which comprises a valve plate which is integrally in a rectangular structure, wherein one end surface of the valve plate is provided with a valve rod mounting hole with a blind hole structure; a valve rod is arranged in the valve rod mounting hole, a pressure hole and an overflow hole are respectively arranged on the surface of the valve plate corresponding to the front position and the other position of one side of the valve rod, and the projection of the pressure hole and the overflow hole on the surface of the valve plate is at least partially overlapped with the projection of the valve rod mounting hole on the surface of the valve plate, so that the overflow hole and the pressure hole can be respectively communicated with the valve rod mounting hole; the pressure hole penetrates through the valve plate; a linear motor is arranged on the outer side of one end of the valve plate, and is provided with a working shaft which is arranged right opposite to the valve rod; be equipped with spring mechanism between working shaft and valve rod, the respective butt in the working shaft and valve rod in spring mechanism both ends, the utility model has the advantages of simple structure, use cost is lower, and the regulation precision is higher, facilitates the use more.
Description
Technical Field
The utility model belongs to the technical field of pressure adjustment, concretely relates to hydraulic system's pressure adjustment device.
Background
There are two main ways of pressure regulation of hydraulic systems: one is constant pressure, and the other is real-time pressure adjustment according to a pressure curve. The first mode is simple and can be adjusted once; the traditional real-time pressure adjusting system can only adjust the high pressure, can not adjust the low pressure, and has high price, and a single set of system reaches about 10 ten thousand yuan.
Chinese patent (CN201461578U) discloses a digital pure water overflow valve; chinese patent (CN202031902U) discloses a digital pure water hydraulic overflow valve; chinese patent (CN102588372B) discloses an electro-hydraulic proportional overflow valve; chinese patent application (CN110017392A) discloses an overflow valve suitable for an injection molding machine. The technical scheme has the following defects: 1, the structure is complex, so that the processing cost is high and the price is high; 2, the pressure is inconvenient to adjust, and the pressure adjusting precision is low.
Therefore, how to provide a pressure adjusting device of a hydraulic system, which has a simple structure, lower use cost, higher adjustment precision and more convenient use, becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a simple structure, use cost is lower, adjusts the higher, the hydraulic system's that facilitates the use pressure regulating device who adjusts the precision more.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a pressure regulating device of a hydraulic system comprises a valve plate which is integrally in a rectangular structure, wherein a valve rod mounting hole with a blind hole structure is formed in one end surface of the valve plate; a valve rod is arranged in the valve rod mounting hole, a pressure hole and an overflow hole are respectively arranged on the surface of the valve plate corresponding to the front position and the other position of one side of the valve rod, and the projection of the pressure hole and the overflow hole on the surface of the valve plate is at least partially overlapped with the projection of the valve rod mounting hole on the surface of the valve plate, so that the overflow hole and the pressure hole can be respectively communicated with the valve rod mounting hole; the pressure hole penetrates through the valve plate; a linear motor is arranged on the outer side of one end of the valve plate, and is provided with a working shaft which is arranged right opposite to the valve rod; and a spring mechanism is arranged between the working shaft and the valve rod, two ends of the spring mechanism are respectively abutted against the working shaft and the valve rod, and the spring mechanism can be abutted against the spring mechanism to adjust the thrust applied to the valve rod by the spring mechanism after the working shaft moves towards the valve rod.
Therefore, when the pressure regulating device of the hydraulic system is used, two ends of the pressure hole are connecting ends and are connected to the pipeline; when liquid or gas are connected with the pressure hole in the pipeline, the liquid or gas can push the valve rod to move axially outwards, and the valve rod moves outwards, so that the pressure hole and the overflow hole are communicated with each other through the inner end of the valve rod mounting hole, partial pressure is relieved through the overflow hole, and the effect of adjusting the pressure is achieved. When needing adjustment control to obtain different pressure, through the length that control linear electric motor working shaft stretches out along valve rod mounting hole axial for it promotes spring mechanism, and pushing the valve rod through spring mechanism, spring mechanism is compressed the back, and the thrust that spring mechanism applied to the valve rod can change, and the same atmospheric pressure or hydraulic pressure promote the outside distance of valve rod and diminish this moment, makes the pressure release effect weaken between pressure hole and the overflow hole, thereby reaches the effect of pressure regulating. The linear motor is adopted, so that the control can be more convenient and accurate, the pressure of the hydraulic system can be automatically controlled in real time by controlling the running distance of the linear motor, the structure is simple, and the cost is low. And can adjust high pressure or low pressure better, during the adjustment, only need to change case diameter or change the spring (change K value). The device has the advantages of simple structure, lower use cost, higher adjustment precision and more convenient use.
As optimization, the pressure hole and the overflow hole are arranged at intervals in the axial direction of the valve rod; and the distance from the overflow hole to the outer end of the valve rod mounting hole is smaller than the distance from the pressure hole to the outer end of the valve rod mounting hole.
Like this, through being the interval setting with pressure hole and overflow hole in valve rod axial direction, when using for the valve rod is along the valve rod mounting hole axial after outwards moving, and makes the valve rod mounting hole just realize pressure adjustment after in order and pressure hole and overflow hole intercommunication, designs more rationally, makes the precision higher.
As optimization, the overflow hole is the valve plate setting that runs through.
Like this, be the overflow hole and run through the valve plate setting for after the overflow hole passes through valve rod mounting hole and pressure port intercommunication, the both ends in overflow hole all can carry out the pressure release, have the advantage of designing more rationally.
Preferably, the valve rod mounting hole is of a stepped hole structure with a large outer end diameter and a small inner end diameter, and a positioning shaft shoulder is arranged on the outer end of the valve rod at intervals of a stepped surface formed by the large end and the small end of the valve rod mounting hole.
Like this, the location shaft shoulder can paste mutually with the step face and carry out spacing with the inward removal of restriction valve rod axial, and the structure is simpler, designs more rationally.
Preferably, the spring mechanism comprises a spiral spring sleeved at the outer end of the valve rod, the inner end of the spiral spring is supported on the positioning shaft shoulder in an abutting mode, and the outer end of the spiral spring is supported at the outer end of the working shaft in an abutting mode.
Therefore, the spring mechanism adopts the spiral spring and has the advantage of simple structure.
As optimization, the outer end of the working shaft is connected with a moving head which is integrally cylindrical, and a limiting shaft shoulder is formed in the middle position of the moving head in the axial direction; the spiral spring is sleeved on the moving head and supported on the limiting shaft shoulder in an abutting mode.
Thus, by arranging the movable head, the movable head moves towards the valve rod, the positioning shaft shoulder on the valve rod can be attached to the step surface to limit the inward axial movement of the valve rod, and after the movable head compresses the spiral spring, when the front end of the movable head abuts against the outer end of the valve rod, the front end of the movable head is the maximum compression amount of the spiral spring and is also the limit value of the adjusting pressure. The design is more reasonable.
Preferably, a connecting seat is fixedly connected to the outer side of one end of the valve plate, the linear motor is fixedly mounted at the outer end of the connecting seat, a guide hole is formed in the connecting seat and right opposite to the working shaft, and the moving head is arranged in the guide hole in a sliding fit mode.
Like this, the guiding hole on the connecting seat has the guide effect to the floating head for the floating head can be better along valve rod axial displacement, improves control accuracy.
Preferably, the front end of the valve rod is provided with a part of conical section, and the inner end of the valve rod mounting hole is a conical hole matched with the conical section.
Like this, increase the inner area of contact with the inner of valve rod mounting hole in valve rod, improvement gas tightness that can be better.
Drawings
Fig. 1 is a schematic axial view of an embodiment of the present invention.
Fig. 2 is a schematic view of fig. 1 rotated by an angle.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is a left side view of fig. 1.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
see fig. 1 to 6 for: a pressure regulating device of a hydraulic system comprises a valve plate 1 which is integrally in a rectangular structure, wherein a valve rod mounting hole 2 with a blind hole structure is formed in one end surface of the valve plate 1; a valve rod 3 is arranged in the valve rod mounting hole, a pressure hole 4 and an overflow hole 5 are respectively arranged on one surface of the valve plate 1 corresponding to the front end position and the other side position of one side of the valve rod, and the projection of the pressure hole and the overflow hole on the surface of the valve plate is at least partially overlapped with the projection of the valve rod mounting hole on the surface of the valve plate, so that the overflow hole 5 and the pressure hole 4 can be respectively communicated with the valve rod mounting hole 2; the pressure hole penetrates through the valve plate, so that two ends of the pressure hole form connecting ends respectively; the valve is characterized in that a linear motor 6 is arranged on the outer side of one end of the valve plate 1, and the linear motor is provided with a working shaft 7 which is arranged right opposite to the valve rod; and a spring mechanism is arranged between the working shaft and the valve rod, two ends of the spring mechanism are respectively abutted against the working shaft and the valve rod, and the spring mechanism can be abutted against the spring mechanism to adjust the thrust applied to the valve rod by the spring mechanism after the working shaft moves towards the valve rod.
Therefore, when the pressure regulating device of the hydraulic system is used, two ends of the pressure hole are connecting ends and are connected to the pipeline; when liquid or gas are connected with the pressure hole in the pipeline, the liquid or gas can push the valve rod to move axially outwards, and the valve rod moves outwards, so that the pressure hole and the overflow hole are communicated with each other through the inner end of the valve rod mounting hole, partial pressure is relieved through the overflow hole, and the effect of adjusting the pressure is achieved. When needing adjustment control to obtain different pressure, through the length that control linear electric motor working shaft stretches out along valve rod mounting hole axial for it promotes spring mechanism, and pushing the valve rod through spring mechanism, spring mechanism is compressed the back, and the thrust that spring mechanism applied to the valve rod can change, and the same atmospheric pressure or hydraulic pressure promote the outside distance of valve rod and diminish this moment, makes the pressure release effect weaken between pressure hole and the overflow hole, thereby reaches the effect of pressure regulating. The linear motor is adopted, so that the control can be more convenient and accurate, the pressure of the hydraulic system can be automatically controlled in real time by controlling the running distance of the linear motor, the structure is simple, and the cost is low. And can adjust high pressure or low pressure better, during the adjustment, only need to change case diameter or change the spring (change K value). The device has the advantages of simple structure, lower use cost, higher adjustment precision and more convenient use.
In the embodiment, the pressure hole 4 and the overflow hole 5 are arranged at intervals in the axial direction of the valve rod; and the distance from the overflow hole to the outer end of the valve rod mounting hole is smaller than the distance from the pressure hole to the outer end of the valve rod mounting hole.
Like this, through being the interval setting with pressure hole and overflow hole in valve rod axial direction, when using for the valve rod is along the valve rod mounting hole axial after outwards moving, and makes the valve rod mounting hole just realize pressure adjustment after in order and pressure hole and overflow hole intercommunication, designs more rationally, makes the precision higher.
In this embodiment, the overflow hole 5 is formed through the valve plate.
Like this, be the overflow hole and run through the valve plate setting for after the overflow hole passes through valve rod mounting hole and pressure port intercommunication, the both ends in overflow hole all can carry out the pressure release, have the advantage of designing more rationally.
In this specific embodiment, the valve rod mounting hole 2 is a stepped hole structure with a large outer end diameter and a small inner end diameter, and a positioning shoulder 8 is arranged on the stepped surface formed by the large end and the small end of the valve rod outer end interval valve rod mounting hole.
Like this, the location shaft shoulder can paste mutually with the step face and carry out spacing with the inward removal of restriction valve rod axial, and the structure is simpler, designs more rationally.
In this specific embodiment, the spring mechanism includes a coil spring 9 sleeved at the outer end of the valve rod, and the inner end of the coil spring is supported against the positioning shoulder, and the outer end of the coil spring is supported against the outer end of the working shaft.
Therefore, the spring mechanism adopts the spiral spring and has the advantage of simple structure.
In the specific embodiment, the outer end of the working shaft is connected with a moving head 10 which is cylindrical as a whole, and a limit shaft shoulder 11 is formed at the axial middle position of the moving head; the spiral spring is sleeved on the moving head and supported on the limiting shaft shoulder in an abutting mode.
Thus, by arranging the movable head, the movable head moves towards the valve rod, the positioning shaft shoulder on the valve rod can be attached to the step surface to limit the inward axial movement of the valve rod, and after the movable head compresses the spiral spring, when the front end of the movable head abuts against the outer end of the valve rod, the front end of the movable head is the maximum compression amount of the spiral spring and is also the limit value of the adjusting pressure. The design is more reasonable.
In the specific embodiment, a connecting seat 12 is fixedly connected to the outer side of one end of the valve plate, the linear motor is fixedly installed at the outer end of the connecting seat, a guide hole is formed in the connecting seat and is opposite to the working shaft, and the moving head is arranged in the guide hole in a sliding fit mode.
Like this, the guiding hole on the connecting seat has the guide effect to the floating head for the floating head can be better along valve rod axial displacement, improves control accuracy.
In this embodiment, the front end of the valve rod 3 has a tapered section, and the inner end of the valve rod mounting hole is a tapered hole matched with the tapered section.
Like this, increase the inner area of contact with the inner of valve rod mounting hole in valve rod, improvement gas tightness that can be better.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A pressure adjusting device of a hydraulic system comprises a valve plate (1) which is integrally in a rectangular structure, wherein a valve rod mounting hole (2) with a blind hole structure is formed in one end surface of the valve plate (1); a valve rod (3) is arranged in the valve rod mounting hole, a pressure hole (4) and an overflow hole (5) are respectively arranged on one surface of the valve plate (1) corresponding to the front end position and the other side position of one side of the valve rod, and the projections of the pressure hole and the overflow hole on the surface of the valve plate are at least partially overlapped with the projection of the valve rod mounting hole on the surface of the valve plate, so that the overflow hole (5) and the pressure hole (4) can be respectively communicated with the valve rod mounting hole (2); the pressure hole penetrates through the valve plate, and the valve is characterized in that a linear motor (6) is arranged on the outer side of one end of the valve plate (1), and the linear motor is provided with a working shaft (7) which is arranged right opposite to the valve rod; and a spring mechanism is arranged between the working shaft and the valve rod, two ends of the spring mechanism are respectively abutted against the working shaft and the valve rod, and the spring mechanism can be abutted against the spring mechanism to adjust the thrust applied to the valve rod by the spring mechanism after the working shaft moves towards the valve rod.
2. A pressure regulating device of a hydraulic system as set forth in claim 1, characterized in that: the pressure holes (4) and the overflow holes (5) are arranged at intervals in the axial direction of the valve rod; and the distance from the overflow hole to the outer end of the valve rod mounting hole is smaller than the distance from the pressure hole to the outer end of the valve rod mounting hole.
3. A pressure regulating device of a hydraulic system as set forth in claim 1, characterized in that: the overflow hole (5) is arranged to penetrate through the valve plate.
4. A pressure regulating device of a hydraulic system as set forth in claim 1, characterized in that: the valve rod mounting hole (2) is of a stepped hole structure with a large outer end diameter and a small inner end diameter, and a positioning shaft shoulder (8) is arranged on the stepped surface formed by the large end and the small end of the valve rod outer end interval valve rod mounting hole.
5. A pressure regulating device of a hydraulic system as set forth in claim 4, characterized in that: the spring mechanism comprises a spiral spring (9) sleeved at the outer end of the valve rod, the inner end of the spiral spring is supported on the positioning shaft shoulder in an abutting mode, and the outer end of the spiral spring is supported at the outer end of the working shaft in an abutting mode.
6. A pressure regulating device of a hydraulic system as set forth in claim 5, characterized in that: the outer end of the working shaft is connected with a moving head (10) which is integrally cylindrical, and a limiting shaft shoulder (11) is formed in the middle of the moving head in the axial direction; the spiral spring is sleeved on the moving head and supported on the limiting shaft shoulder in an abutting mode.
7. A pressure regulating device of a hydraulic system as set forth in claim 6, wherein: a connecting seat (12) is fixedly connected to the outer side of one end of the valve plate, the linear motor is fixedly installed at the outer end of the connecting seat, a guide hole is formed in the connecting seat and right faces the working shaft, and the moving head is arranged in the guide hole in a sliding fit mode.
8. A pressure regulating device of a hydraulic system as set forth in claim 1, characterized in that: the front end of the valve rod (3) is provided with a conical section, and the inner end of the valve rod mounting hole is provided with a conical hole matched with the conical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922426696.5U CN211202466U (en) | 2019-12-27 | 2019-12-27 | Pressure adjusting device of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922426696.5U CN211202466U (en) | 2019-12-27 | 2019-12-27 | Pressure adjusting device of hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202466U true CN211202466U (en) | 2020-08-07 |
Family
ID=71855992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922426696.5U Expired - Fee Related CN211202466U (en) | 2019-12-27 | 2019-12-27 | Pressure adjusting device of hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202466U (en) |
-
2019
- 2019-12-27 CN CN201922426696.5U patent/CN211202466U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200807 Termination date: 20211227 |