CN209638126U - A kind of automatic regulating valve for hydraulic system oil inlet return flow - Google Patents
A kind of automatic regulating valve for hydraulic system oil inlet return flow Download PDFInfo
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- CN209638126U CN209638126U CN201821919036.XU CN201821919036U CN209638126U CN 209638126 U CN209638126 U CN 209638126U CN 201821919036 U CN201821919036 U CN 201821919036U CN 209638126 U CN209638126 U CN 209638126U
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Abstract
One kind being used for hydraulic system oil inlet return flow automatic regulating valve, is to draw and exclude hydraulic oil in oil cylinder for hydraulic oil supply system in the case where the flow of disengaging oil is different automatically and be supplied to hydraulic system, while guaranteeing the pressure of high-pressure oil passage.Instead of usually used check valve and hydraulic control one-way valve combination constitute just as function so that volume reduce and structure simplify.As shown in Figure 1, the elastic force of the pressure of hydraulic oil and the first spring pushes the first valve plug downlink, blocks the first valve port when the utility model suitable for reading is in high pressure conditions.The second valve plug is pushed to overcome the elastic force of second spring far from the second valve port by connecting rod simultaneously, so that the extra oil stream in the utility model lower part goes out the right output port of the utility model, or what is lacked oily suck back from the right output port of the utility model.The right output port of the utility model connects fuel tank.Conversely, the operating principle of the utility model and it is aforementioned be the same.
Description
Technical field
The utility model belongs to hydraulic system technical field, is used for hydraulic system oil inlet return flow more particularly to one kind
Automatic regulating valve.
Background technique
Why hydraulic drive can be widely used, and having benefited from it has the advantages that many.With machine driving, electricity
Power transmission is compared, under conditions of same output power, its volume, weight and compact-sized.In the feelings for realizing said function
Under condition compared with machine driving, the quantity of the components formed required for it is also few.It also has stable drive, for obtain compared with
Big torque realizes a wide range of stepless time adjustment transmission etc..Since technology is widely used, constituted in hydraulic system
On, function component realizes seriation, standardization and generalization, is conducive to design, manufacture and promotes.And these function elements
Convenient for connecting and combining.
For the circuit of hydraulic system fuel feeding and oil return, as shown in figure 4, being commonly used for driving hydraulic cylinder to be a kind of
The hydraulic scheme of reciprocating motion.Servo motor drives bidirectional hydraulic pump work, absorbs and output hydraulic pressure oil is in hydraulic circuit.By
In hydraulic cylinder piston left part with piston rod, the movement of hydraulic cylinder piston, hydraulic cylinder piston right part chamber and left part chamber by injection and
The oil mass of exclusion is inequality.It is exactly that a check valve and one are added in hydraulic circuit to solve the method for this problem
A hydraulic control one-way valve.When two-way oil pump is to when hydraulic cylinder piston right part chamber oiling, two-way oil pump left end needs to provide the liquid of equivalent
Pressure oil.But since hydraulic cylinder piston left part is intracavitary containing piston rod, it can not rule out the hydraulic oil of equivalent.At this moment, two-way oil pump
A part of hydraulic oil is drawn from fuel tank by check valve to supplement to the left end of two-way oil pump, so that the left-hand of hydraulic cylinder piston is transported
It is dynamic to be carried out.When two-way oil pump is to left end output hydraulic pressure oil, hydraulic cylinder piston is moved right, and there is also disengaging oil mass is uneven
The problem of weighing apparatus.At this moment, the pressure increase of the liquid on the left of two-way oil pump, so that the check direction of phase pilot operated valve device is connected, it is hydraulic
Extra oil is excluded on the right side of the cylinder piston returns to fuel tank.Realize the period of hydraulic cylinder one reciprocating motion.
01 in Fig. 4 is hydraulic cylinder, and 02 is check valve, and 03 is hydraulic control one-way valve, and 04 is fuel tank, and 05 is servo motor, 06
Two-way oil pump.
Utility model content
The purpose of this utility model is:
The utility model is a kind of for hydraulic system oil inlet return flow automatic regulating valve, and the function that it has is two
The function of a hydraulic control one-way valve combination, small volume structure are simple.
The technical solution of use
One kind being used for hydraulic system oil inlet return flow automatic regulating valve, comprising: shell, the first valve plug, connects the first spring
Bar, the second valve plug and second spring.It is characterized by:
The shell is made of three chambers, and upper chambers and hull outside are equipped with connector, the chamber at upper chambers and middle part it
Between offer the first valve port.Lower chamber and hull outside are equipped with connector, and the second valve port is equipped between lower chamber and center lumen.In
Portion's chamber and hull outside are equipped with connector.
The upper surface of first spring abuts the first face on shell, and the upper end of the first valve plug is supported in the lower end surface of the first spring.
The lower end of first valve plug and the upper end of the first valve port on shell are corresponding adjacent.The lower end of first valve plug and the upper end of connecting rod are fixed
Connection, the upper end of connecting rod is located at the middle part in the first valve port hole on shell.The lower end of connecting rod is located at the second valve port hole on shell
Middle part, the lower end of connecting rod is fixedly connected with the upper end of the second valve plug, under the second valve port on the upper end and shell of the second valve plug
End correspondence is adjacent.The lower end of second valve plug abuts the upper end of second spring, and the lower end of second spring abuts the second face on shell.
The upper chambers and lower chamber of the shell connect external tapping internal diameter equipped with screw thread, the first sleeve lower part it is outer
Cylinder is equipped with screw thread.Second casing is identical as first sleeve.First sleeve is placed in that lower part of the housing is intracavitary, the lower part of first sleeve with
The outer connector of lower part of the housing chamber is threadedly coupled, and the upper surface of first sleeve abuts the lower end of second spring.
Second casing is placed in that upper part of the housing is intracavitary, and the threaded portion of the second casing and the external tapping screw thread of upper part of the housing chamber connect
It connects, the lower end surface of the second casing abuts the upper end of the first spring.
The both ends of the connecting rod are arranged with external screw thread, offer screw thread between the first valve plug and the second valve plug upper and lower side
Through-hole.The top of connecting rod is connect with the threaded hole lower thread of the first valve plug, on the threaded hole of the lower part of connecting rod and the second valve plug
End is threadedly coupled.
It opens up fluted on the lower end surface of the first sleeve tube wall, is offered on the upper surface of second set of tube wall recessed
Slot.
It is opened up in the both ends of the surface of the connecting rod fluted.
Oil is opened up on first valve plug and the second valve plug and the abutting end side of corresponding first spring and second spring
Groove.
Described one kind is used for hydraulic system oil inlet return flow automatic regulating valve, says, is realizing from the angle of application
For identical function compared with existing application means, it has the advantages that small in size and structure is simple.Set first sleeve,
Second casing, connecting rod, the first valve plug and the second valve plug, when for two valve plug close ports or being detached from valve port switching, Ke Yitong
Two interface pressure differences of adjustment shell or more are crossed to realize, distance when also adjustable valve plug is detached from valve port is cut to adjust conducting
Face.
Advantage
It can be seen that the utility model by Fig. 4 and Fig. 5 to be made of instead of it check valve and forming for hydraulic control one-way valve
Function, simplify structure, reduce volume.For the structure feature of the utility model, access two-way oil pump two sides
Interface does not have the requirement of positive-negative connected.
01 in Fig. 5 is hydraulic cylinder, and 04 is fuel tank, and 05 is servo motor, and 06 two-way oil pump, 07 is used for hydraulic pressure system to be a kind of
System oil inlet return flow automatic regulating valve.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the station location marker figure of shell；
Fig. 3 is a kind of derivative schemes assembling schematic diagram for hydraulic system oil inlet return flow automatic regulating valve；
Fig. 4 is a kind of hydraulic scheme commonly moved back and forth for hydraulic cylinder；
Fig. 5 is the hydraulic scheme that the utility model is applied to that hydraulic cylinder moves back and forth.
Specific embodiment
Embodiment 1
As shown in figure 5, the utility model is the valve provided in reciprocating hydraulic system to hydraulic cylinder.Servo motor
Power is provided for two-way oil pump, when rotating such as servo motor to a direction initialization, the hydraulic oil of two-way oil pump output passes through pipe
Road is injected into the intracavitary of the right part of hydraulic cylinder piston, and the piston of hydraulic cylinder is pushed to move downward, and simultaneously bi-directionally oil pump is from hydraulic cylinder
The intracavitary draw oil of the left part of piston, two-way oil pump left side are intake side, and the pressure of hydraulic oil is right lower than two-way oil pump
The pressure of side.
Since hydraulic cylinder piston left part has piston rod, that is to say, that the movement of hydraulic cylinder piston, hydraulic cylinder piston left part
The oil mass that chamber and right part are injected or excluded is inequality.At this moment, the hydraulic oil of the utility model right end, due to liquid to be pushed
The piston of cylinder pressure moves downward, and the pressure of hydraulic oil is higher.Simultaneously because the hydraulic oil in hydraulic cylinder piston left side cavity is extruded.
The intracavitary valve plug of the utility model right part moves downward under the promotion of spring and hydraulic fluid pressure and blocks the utility model right chamber
The valve opening of left end, hydraulic oil cannot be returned to hydraulic oil in fuel tank by this hole, the hydraulic oil on the right side of two-way oil pump in pipeline
Pressure be maintained, guarantee thrust to piston in hydraulic cylinder to the left.
While the intracavitary valve plug of the utility model right part blocks the valve opening of the utility model right chamber left end, this valve plug
The right end hole of the utility model left part chamber, two-way oil pump are detached from by the valve plug that connecting rod pushes the utility model left part intracavitary
Lacking in hydraulic oil draw and supplemented in fuel tank by this hole.The hydraulic oil drawn of two-way oil pump and exclusion in this way
Hydraulic oil flow it is equal, will not influence the normal operation of hydraulic cylinder.
Conversely, when the piston of hydraulic cylinder moves downward, the intracavitary spring of the pressure and the utility model left part of hydraulic oil
The valve plug for pushing the utility model left part intracavitary moves right, and blocks the valve opening of the utility model left chamber right end.Meanwhile this is practical
The intracavitary valve plug of novel left part overcomes the utility model right part intracavitary by the valve plug that connecting rod pushes the utility model right part intracavitary
The power of spring is detached from the left end valve opening intracavitary to the utility model right part.The extra hydraulic oil that two-way oil pump is not drawn
Fuel tank is returned to by the intracavitary left end valve opening of the utility model right part.
As shown in figure 3, the first sleeve and the second casing of threaded connection are added at the external tapping in the upper and lower cavity of shell,
The length of adjustable first spring and second spring is adjusted to the pressure of corresponding valve plug.Also it is practical new that this can be adjusted
The pressure of the valve opening opening and closing switching of type.
The threaded connection of both ends screwed connecting rod and upper and lower valve plug, the distance of adjustable two valve plugs.In this way, can
To adjust the size that another valve port is opened when a valve port is closed.
In order to facilitate adjustment, end side is abutted with spring in first sleeve, the second casing, the both ends of connecting rod and valve plug and is opened up
Oily groove facilitates the merging of adjustment tool.
For fuel tank, the volume that oil reserve is suitably larger than the piston rod of hydraulic cylinder can meet wanting for fuel feeding
It asks, the volume of such fuel tank can design smaller.From the point of view of the comparison of Fig. 4 and Fig. 5, the utility model in practical application
Instead of the check valve and hydraulic control one-way valve in Fig. 4, there is advantage from volume and structure are simply upper.
One kind being used for hydraulic system oil inlet return flow automatic regulating valve, comprising: shell 1, the first spring 2, the first valve plug
3, connecting rod 4, the second valve plug 5 and second spring 6；It is characterized by:
The shell 1 is made of three chambers, and connector, the chamber of upper chambers and middle part are equipped with outside upper chambers and shell 1
Between offer the first valve port 8；It is equipped with connector outside lower chamber and shell 1, the second valve is equipped between lower chamber and center lumen
Mouth 9；Connector is equipped with outside center lumen and shell 1；
The upper surface of first spring 2 abuts the first face 7 on shell 1, and the first valve plug 3 is supported in the lower end surface of the first spring 2
Upper end；The lower end of first valve plug 3 and the upper end of the first valve port 8 on shell 1 are corresponding adjacent；The lower end of first valve plug 3 and connecting rod 4
Upper end be fixedly connected, the upper end of connecting rod 4 is located at the middle part in 8 hole of the first valve port on shell 1；The lower end of connecting rod 4 is located at shell 1
On 9 hole of the second valve port middle part, the lower end of connecting rod 4 is fixedly connected with the upper end of the second valve plug 5, the upper end of the second valve plug 5 and shell
The lower end of the second valve port 9 on body 1 corresponds to adjacent；The lower end of second valve plug 5 abuts the upper end of second spring 6, second spring 6
Lower end abuts the second face 10 on shell 1.
Embodiment 2
A kind of embodiment 2 for hydraulic system oil inlet return flow automatic regulating valve is substantially the same manner as Example 1, no
It is with place:
The both ends of the connecting rod 4 are arranged with external screw thread, offer between 5 upper and lower side of the first valve plug 3 and the second valve plug
Tapped through hole；The top of connecting rod 4 is connect with the threaded hole lower thread of the first valve plug 3, the lower part of connecting rod 4 and the second valve plug 5
The connection of threaded hole threaded upper ends.
Embodiment 3
A kind of embodiment 3 for hydraulic system oil inlet return flow automatic regulating valve is substantially the same manner as Example 1, no
It is with place:
It is opened on first valve plug 3 and the second valve plug 5 and the abutting end side of corresponding first spring 2 and second spring 6
If oily groove.
Embodiment 4
A kind of embodiment 4 for hydraulic system oil inlet return flow automatic regulating valve is substantially the same manner as Example 1, no
It is with place:
It is opened up in the both ends of the surface of the connecting rod 4 fluted.
Embodiment 5
A kind of embodiment 5 for hydraulic system oil inlet return flow automatic regulating valve is substantially the same manner as Example 1, no
It is with place:
The upper chambers and lower chamber of the shell 1 connect external tapping internal diameter equipped with screw thread, 11 lower part of first sleeve
Outer cylinder be equipped with screw thread；Second casing 12 is identical as first sleeve 11；First sleeve 11 is placed in 1 lower chamber of shell, and first
The lower part of casing 11 is threadedly coupled with the outer connector of 1 lower chamber of shell, and the upper surface of first sleeve 11 abuts second spring 6
Lower end；
Second casing 12 is placed in 1 upper chambers of shell, the threaded portion of the second casing 12 and the external tapping of 1 upper chambers of shell
It is threadedly coupled, the lower end surface of the second casing 12 abuts the upper end of the first spring 2.
Embodiment 6
A kind of embodiment 6 for hydraulic system oil inlet return flow automatic regulating valve is substantially the same manner as Example 5, no
It is with place:
It opens up fluted on the lower end surface of 11 tube wall of first sleeve, is opened up on the upper surface of 12 tube wall of the second casing
It is fluted.
Working principle
As shown in figure 3, liquid and the first spring are to first when shell fluid pressure suitable for reading is greater than lower mouth fluid pressure
Valve plug imposes thrust, and the first valve opening on shell is blocked.In this process, to overcome the counter-force and shell of second spring
The fluid pressure of lower mouth, under shell the pressure of mouth perhaps when positive pressure either negative pressure.At this moment, the second valve plug is far from the second valve opening,
So that the lower mouth of shell is connected with the right end hole of shell, in pipeline extra or shortcoming liquid by shell the excretion of right end hole and
Supplement.Conversely, the right end hole of the suitable for reading and shell of shell is connected, in pipeline extra or shortcoming liquid by shell right end hole
Excretion or supplement.
In order to enable the pressure difference between the suitable for reading and lower mouth of shell is adjusted to be best suited for the operation of hydraulic system.It is set
First sleeve and the second casing and shell threaded connection adjustment, adjustable first spring and second spring are to corresponding
The pressure of the valve plug of abutting.That is, adjustable valve plug is detached from or blocks cutting between the suitable for reading and lower mouth of shell of valve opening
Change pressure difference value.
The threaded connection of the connecting rod and valve plug, the distance between adjustable first valve plug and the second valve plug, also
It is to say, maximum disengaging distance of the adjustable valve plug when being detached from valve port.Adjust the sectional area of fluid communication.
In order to facilitate adjustment, on first sleeve screw thread side end face, on the second casing threads side end face, the both ends of connecting rod with
And oily groove is opened up on the end face that abuts with spring of valve plug, facilitate tool to the operation adjustment of these parts.
Claims (4)
1. one kind is used for hydraulic system oil inlet return flow automatic regulating valve, comprising: shell (1), the first spring (2), the first valve
Fill in (3), connecting rod (4), the second valve plug (5) and second spring (6)；It is characterized by: the shell (1) is made of three chambers,
It is equipped with connector outside upper chambers and shell (1), the first valve port (8) are offered between upper chambers and the chamber at middle part；Lower chamber with
It is equipped with connector outside shell (1), is equipped with the second valve port (9) between lower chamber and center lumen；It is set outside center lumen and shell (1)
There is connector；The upper surface of first spring (2) abuts the first face (7) on shell (1), and the lower end surface of the first spring (2) supports the
The upper end of one valve plug (3)；The lower end of first valve plug (3) and the upper end of the first valve port (8) on shell (1) are corresponding adjacent；First
The lower end of valve plug (3) is fixedly connected with the upper end of connecting rod (4), and the upper end of connecting rod (4) is located at the first valve port (8) on shell (1)
The middle part in hole；The lower end of connecting rod (4) is located at the middle part in the second valve port (9) hole on shell (1), and the lower end of connecting rod (4) is fixed to be connected
The upper end of the second valve plug (5) is connect, the upper end and the lower end of the second valve port (9) on shell (1) of the second valve plug (5) are corresponding adjacent；
The lower end of second valve plug (5) abuts the upper end of second spring (6), and the lower end of second spring (6) abuts the second face on shell (1)
(10).
2. according to claim 1 a kind of for hydraulic system oil inlet return flow automatic regulating valve, it is characterised in that: institute
The both ends for the connecting rod (4) stated are arranged with external screw thread, offer screw thread between the first valve plug (3) and the second valve plug (5) upper and lower side
Through-hole；The top of connecting rod (4) is connect with the threaded hole lower thread of the first valve plug (3), the lower part of connecting rod (4) and the second valve plug
(5) threaded hole threaded upper ends connection.
3. according to claim 1 a kind of for hydraulic system oil inlet return flow automatic regulating valve, it is characterised in that: institute
It the first valve plug (3) and the second valve plug (5) stated and is opened up on the abutting end side of corresponding first spring (2) and second spring (6)
Oily groove.
4. according to claim 1 a kind of for hydraulic system oil inlet return flow automatic regulating valve, it is characterised in that: institute
It is opened up in the both ends of the surface for the connecting rod (4) stated fluted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919036.XU CN209638126U (en) | 2018-11-21 | 2018-11-21 | A kind of automatic regulating valve for hydraulic system oil inlet return flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919036.XU CN209638126U (en) | 2018-11-21 | 2018-11-21 | A kind of automatic regulating valve for hydraulic system oil inlet return flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209638126U true CN209638126U (en) | 2019-11-15 |
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ID=68473236
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821919036.XU Active CN209638126U (en) | 2018-11-21 | 2018-11-21 | A kind of automatic regulating valve for hydraulic system oil inlet return flow |
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| CN (1) | CN209638126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707686A (en) * | 2018-11-21 | 2019-05-03 | 沈阳人和机电工程设备有限公司 | A kind of automatic regulating valve for hydraulic system oil inlet return flow |
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2018
- 2018-11-21 CN CN201821919036.XU patent/CN209638126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707686A (en) * | 2018-11-21 | 2019-05-03 | 沈阳人和机电工程设备有限公司 | A kind of automatic regulating valve for hydraulic system oil inlet return flow |
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