CN110219848A - Integrated form variable control valve - Google Patents
Integrated form variable control valve Download PDFInfo
- Publication number
- CN110219848A CN110219848A CN201910685471.3A CN201910685471A CN110219848A CN 110219848 A CN110219848 A CN 110219848A CN 201910685471 A CN201910685471 A CN 201910685471A CN 110219848 A CN110219848 A CN 110219848A
- Authority
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- China
- Prior art keywords
- cavity
- valve body
- spool
- oilhole
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to integrated form variable control valves.Including the spool for being mounted on the intracorporal valve body of cylinder and being arranged in body cavity, the first cavity, the second cavity are formed between valve body and cylinder body, third cavity, the 4th cavity are formed between spool and valve body, valve body is equipped with the first cavity of connection with the first oilhole of third cavity and is connected to the second oilhole of the second cavity and the 4th cavity, spool is equipped with the third oilhole of connection third cavity and the 4th cavity, first cavity and the second cavity are connected to intracorporal first hydraulic fluid port of cylinder and the second hydraulic fluid port respectively, and the relief hole of the second cavity of connection and the 4th cavity is additionally provided on valve body.As shown from the above technical solution, the present invention changes flow by the size of area of passage on pressure-regulating valve body, realizes speed regulation；Keep spool transition in valve body steady by one-way valve structures；, can be according to pressure difference come the displacement of control valve core when flow reaches a timing, and then cut off, play the effect of stop valve.
Description
Technical field
The present invention relates to forklift hydraulic system fields, and in particular to a kind of integrated form variable control valve.
Background technique
Existing variable control valve is made of valve body, spool, spring, baffle and circlip, is had on valve body two rows of uniform
The aperture of distribution covers the hole on valve body by the movement of spool, reduced pasta product, and achieved the effect that speed limit flow.The knot
There are some defects in structure, oil cylinder declines moment, and oil liquid can generate pressure difference and push spool mobile when passing through spool when in use, due to
Pressure is difficult to discharge in a short time, causes the unstable vibration back and forth of spool, and then causes to flow through the intracorporal instability of flow of valve, most
Lead to door frame decline shake eventually.
Summary of the invention
The purpose of the present invention is to provide a kind of integrated form variable control valve, which keep the decline process of oil cylinder
Steadily, shake when avoiding cargo from declining, while stop valve can be played the role of, and then avoid dangerous generation.
To achieve the above object, the invention adopts the following technical scheme: including being mounted on the intracorporal valve body of cylinder and setting
The spool in body cavity is set, forms the first cavity, the second cavity, the spool and valve between the valve body and cylinder body
Third cavity, the 4th cavity are formed between body, the valve body is equipped with the first oilhole of connection the first cavity and third cavity
And the second oilhole of connection the second cavity and the 4th cavity, the spool are equipped with connection third cavity and the 4th cavity
Third oilhole, first cavity and the second cavity are connected to intracorporal first hydraulic fluid port of cylinder and the second hydraulic fluid port respectively, described
The relief hole of the second cavity of connection and the 4th cavity is additionally provided on valve body.
The right end of the valve body is closed end, and the end is formed by O-ring and cylinder body and sealed, the left end of the valve body to
Interior to form the body cavity for accommodating spool, the outer surface of the valve body is equipped with the first thread segment and the second screw thread that connect with cylinder body
Section, first oilhole, the second oilhole and relief hole are uniformly arranged along the circumferential direction of valve body multiple respectively, in which: described the
One oilhole and the second oilhole are located on the valve body of the first thread segment two sides, and the second oilhole and relief hole are respectively positioned on the first screw thread
On valve body between section and the second thread segment, the relief hole is angularly disposed.
The spool is fixed in body cavity by the first spring, flow regulator pieces and circlip for hole, the spool
Right end be provided inwardly with accommodate the first spring the first groove, the both ends of the first spring respectively with the slot bottom and valve body of the first groove
The bottom of inner cavity leans, and the flow regulator pieces are resisted against the left end of spool, and the left side of flow regulator pieces is equipped with circlip for hole,
The slot matched with flow regulator pieces and circlip for hole is respectively equipped on the inner wall of the valve body.
The left end of the spool is provided inwardly with the second groove, is equipped with second spring and steel ball, institute in second groove
It states slot bottom of the both ends of second spring respectively with the surface of steel ball and the second groove to lean, be equipped at the center of the flow regulator pieces
The throttle orifice matched with steel ball, the throttle orifice are that left end is open speaker hole small, that right-end openings are big, the flow regulator pieces
The 5th cavity is formed between the second groove, the throttle orifice is connected to the first cavity and the 5th cavity.
The spool is circumferentially with the balancing slit for balance valve core radial force along it, and the balancing slit is along spool
Axial three groups of arrangement.
As shown from the above technical solution, the present invention changes stream by the size of area of passage on pressure-regulating valve body
Amount realizes speed regulation；Keep spool transition in valve body steady by one-way valve structures；When flow reach one timing, can be according to pressure difference
Carry out the displacement of control valve core, and then cut off, plays the effect of stop valve.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of valve body of the present invention；
Fig. 3 is the structural schematic diagram of spool of the present invention；
Fig. 4 is the structural schematic diagram of flow regulator pieces of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
A kind of integrated form variable control valve as shown in Figure 1 including the valve body 2 being mounted in cylinder body 1 and is arranged in valve
Spool 3 in intracoelomic cavity forms the first cavity 10, the second cavity 20, shape between spool 3 and valve body 2 between valve body 2 and cylinder body 1
At third cavity 30, the 4th cavity 40, valve body 2 be equipped with the first cavity 10 of connection and third cavity 30 the first oilhole 21 and
It is connected to the second oilhole 22 of the second cavity 20 and the 4th cavity 40, spool 3 is equipped with connection third cavity 30 and the 4th cavity 40
Third oilhole 31, the first cavity 10 and the second cavity 20 respectively in cylinder body 1 the first hydraulic fluid port 11 and the second hydraulic fluid port 12 be connected to,
The relief hole 23 of the second cavity 20 of connection and the 4th cavity 40 is additionally provided on valve body 2.
Further, as shown in Fig. 2, the right end of valve body 2 be closed end, and the end by O-ring 4 formed with cylinder body 1 it is close
Envelope, the left end of valve body 2 are inwardly formed the body cavity 24 for accommodating spool 3, and the outer surface of valve body 2 is equipped with the connect with cylinder body 1
One thread segment 25 and the second thread segment 26, the first oilhole 21, the second oilhole 22 and relief hole 23 are respectively along the circumferential uniform of valve body 2
It is arranged multiple, in which: the first oilhole 21 and the second oilhole 22 are located on the valve body of 25 two sides of the first thread segment, the second oilhole
22 and relief hole 23 be respectively positioned on the valve body between the first thread segment 25 and the second thread segment 26, relief hole 23 is angularly disposed.Tool
It says to body, is i.e. forms the first cavity 10, the first thread segment 25 and the second spiral shell between the valve body and cylinder body 1 in 25 left side of the first thread segment
The second cavity 20 is formed between valve body between line section 26 and cylinder body 1, the first cavity 10 is connected to the first hydraulic fluid port 11, the second cavity
20 are connected to the second hydraulic fluid port 12, and it is logical that the first oilhole 21, the second oilhole 22 and relief hole 23 are that valve body 2, spool 3, cylinder body 1 are connected
Road.
Further, as shown in Figure 3, Figure 4, spool 3 is fixed by the first spring 5, flow regulator pieces 6 and circlip for hole 7
In body cavity 24, the right end of spool 3 is provided inwardly with the first groove 32 for accommodating the first spring 5, the both ends point of the first spring 5
Bottom not with the slot bottom of the first groove 32 and body cavity 24 leans, and flow regulator pieces 6 are resisted against the left end of spool 3, and throttle
The left side of piece 6 is equipped with circlip for hole 7, is respectively equipped on the inner wall of valve body 2 and flow regulator pieces 6 and the matching of circlip for hole 7
The slot of conjunction.I.e. spool 3 is mounted in body cavity 24, and the left end of spool 3 is in contact with flow regulator pieces 6, and the left end of flow regulator pieces 6 has
Circlip for hole 7 is fixed, and spool 3 is resisted against on flow regulator pieces 6 under the action of the first spring 5.In the right end and valve body of spool 3
The 4th cavity 40 is formed between the bottom of chamber 24, and third cavity 30 is formed between the circumferential direction of spool 3 and the inner wall of body cavity 24.
Further, the left end of spool 3 is provided inwardly with the second groove 33, be equipped in the second groove 33 second spring 8 and
Steel ball 9, slot bottom of the both ends of second spring 8 respectively with the surface of steel ball 9 and the second groove 33 lean, the center of flow regulator pieces 6
Place is equipped with the throttle orifice 61 that matches with steel ball 9, and throttle orifice 61 is that left end is open speaker hole small, that right-end openings are big, flow regulator pieces 6
The 5th cavity 50 is formed between the second groove 33, throttle orifice 61 is connected to the first cavity 10 and the 5th cavity 50.Second spring 8
Active force makes steel ball 9 contact sealing with flow regulator pieces 6, plays the role of a check valve.
Further, spool 3 is circumferentially with the balancing slit 34 for balance valve core radial force along it, and balancing slit 34 is along spool
3 axial three groups of arrangement.
The first cavity and the second cavity are formed between valve body and cylinder body of the invention, forms third chamber between spool and valve body
Body and the 4th cavity, between flow regulator pieces and spool formed the 5th cavity, entire control valve be integrated with flow control valve, check valve and
The function of stop valve, specific working principle are as follows:
1, flow control valve principle:
Liquid is flow to the course of work of the first hydraulic fluid port by the second hydraulic fluid port are as follows: and liquid first enters the second cavity by the second hydraulic fluid port,
Enter the 4th cavity by the second oilhole on valve body and relief hole, enter third cavity using the third oilhole on spool,
The first cavity is flowed to finally by the first oilhole on valve body.
Liquid is flow to the course of work of the second hydraulic fluid port by the first hydraulic fluid port are as follows: and liquid first enters the first cavity by the first hydraulic fluid port,
Part oil liquid flows to the 5th cavity by the throttle orifice on flow regulator pieces, and part oil liquid flows into third by the first oilhole on valve body
Cavity, the hydraulic coupling in the 5th cavity and third cavity overcome the active force of the first spring, push spool to move right, at this time valve
Core can block a part of the second oilhole on valve body, reduce the area of passage on valve body, reduce flow.
Under different loads, the displacement of spool is different oil cylinder, and when loading larger, being forced through for generation is big,
When the position of the second oilhole that i.e. spool blocks up on valve body is not able to satisfy traffic requirement, the oil liquid for needing additionally to supplement will
The second cavity is flowed by relief hole, to meet the required traffic requirement of oil cylinder decline.It is constant in entire hydraulic system pressure
In the case of, the flow for flowing out the second oilhole and relief hole is reduced, to control the movement velocity of oil cylinder.
2, check valve principle:
Due to not being that a movement is completed during door frame falls, spool needs run multiple ability in valve body
Keep hydraulic system pressure constant, in order to spring back spool smoothly during after compressing the first spring in rebound, therefore
A check valve apparatus, i.e. second spring and steel ball are increased on the left side of spool.After elastic force of the steel ball by second spring,
Steel ball is contacted with flow regulator pieces, and throttle orifice is blocked, and the oil liquid in the 5th cavity can not oil liquid by throttle orifice, in the 5th cavity
Can only by the gap of spool and valve body flow into third cavity, such spool be shot back every time all can by the effect of check valve,
Spool is set gradually to tend to be steady, most intuitive phenomenon is exactly the moment of cargo decline, and cargo is not jolted, do not shaken, makes under cargo
Drop moment tends to be steady whereaboutss, has thus reached the stable effect of throttling, and door frame is avoided to shake and impact.
3, stop valve principle:
(the control flow i.e. under the valve steady state exceeds set stream to control valve of the invention under certain condition
Amount) when, the pressure difference of third cavity and the 4th cavity will increase, and differential pressure action overcomes the elastic force of the first spring, finally on spool
Block spool relief hole, the first oilhole, the second oilhole on valve body all, the first cavity under this state, the second cavity,
Third cavity, the 5th cavity can all be isolated with the 4th cavity to be not communicated with, i.e., the oil liquid of the first hydraulic fluid port can not be by the second hydraulic fluid port, this
When entire control valve be equivalent to the effect of stop valve, cargo falling speed can be prevented too fast, play safe effect.
In conclusion control valve arrangement of the invention is simple, and flow control valve, check valve and stop valve are had both simultaneously
Function, the decline process held stationary of oil cylinder can be made, when cargo being avoided to decline occur shake and danger generation.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (5)
1. a kind of integrated form variable control valve, it is characterised in that: exist including the valve body (2) being mounted in cylinder body (1) and setting
Spool (3) in body cavity forms the first cavity (10), the second cavity (20) between the valve body (2) and cylinder body (1),
Third cavity (30), the 4th cavity (40) are formed between the spool (3) and valve body (2), the valve body (2), which is equipped with, to be connected
Logical first cavity (10) and the first oilhole (21) of third cavity (30) and it is connected to the second cavity (20) and the 4th cavity (40)
The second oilhole (22), the spool (3) be equipped with connection third cavity (30) and the 4th cavity (40) third oilhole
(31), first cavity (10) and the second cavity (20) respectively with the first hydraulic fluid port (11) and the second hydraulic fluid port in cylinder body (1)
(12) it is connected to, the relief hole (23) of connection the second cavity (20) and the 4th cavity (40) is additionally provided on the valve body (2).
2. integrated form variable control valve according to claim 1, it is characterised in that: the right end of the valve body (2) is closing
End, and the end is formed by O-ring (4) and cylinder body (1) and is sealed, the left end of the valve body (2), which is inwardly formed, accommodates spool (3)
Body cavity (24), the outer surface of the valve body (2) are equipped with the first thread segment (25) and the second thread segment that connect with cylinder body (1)
(26), first oilhole (21), the second oilhole (22) and relief hole (23) are uniformly arranged along the circumferential direction of valve body (2) more respectively
It is a, in which: first oilhole (21) and the second oilhole (22) is located on the valve body of the first thread segment (25) two sides, the
Two oilholes (22) and relief hole (23) are respectively positioned on the valve body between the first thread segment (25) and the second thread segment (26), described
Relief hole (23) is angularly disposed.
3. integrated form variable control valve according to claim 1, it is characterised in that: the spool (3) passes through the first bullet
Spring (5), flow regulator pieces (6) and circlip for hole (7) are fixed in body cavity (24), and the right end of the spool (3) is inwardly set
There are the first groove (32) for accommodating the first spring (5), the both ends of the first spring (5) slot bottom and valve with the first groove (32) respectively
The bottom of intracoelomic cavity (24) leans, and the flow regulator pieces (6) are resisted against the left end of spool (3), and set on the left of flow regulator pieces (6)
Have circlip for hole (7), is respectively equipped on the inner wall of the valve body (2) and matches with flow regulator pieces (6) and circlip for hole (7)
The slot of conjunction.
4. integrated form variable control valve according to claim 3, it is characterised in that: the left end of the spool (3) is inwardly set
Have the second groove (33), second spring (8) and steel ball (9) are equipped in second groove (33), the second spring (8)
Slot bottom of the both ends respectively with the surface of steel ball (9) and the second groove (33) leans, at the center of the flow regulator pieces (6) be equipped with
The throttle orifice (61) that steel ball (9) matches, the throttle orifice (61) are that left end is open speaker hole small, that right-end openings are big, institute
The 5th cavity (50) is formed between the flow regulator pieces (6) stated and the second groove (33), the throttle orifice (61) is connected to the first cavity
(10) with the 5th cavity (50).
5. integrated form variable control valve according to claim 1, it is characterised in that: the spool (3) is set along its circumferential direction
There are the balancing slit (34) for balance valve core radial force, axial arrangement three group of the balancing slit (34) along spool (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910685471.3A CN110219848A (en) | 2019-07-27 | 2019-07-27 | Integrated form variable control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910685471.3A CN110219848A (en) | 2019-07-27 | 2019-07-27 | Integrated form variable control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110219848A true CN110219848A (en) | 2019-09-10 |
Family
ID=67813735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910685471.3A Pending CN110219848A (en) | 2019-07-27 | 2019-07-27 | Integrated form variable control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692154A (en) * | 2020-06-23 | 2020-09-22 | 三一海洋重工有限公司 | Speed limiting valve |
| CN112555454A (en) * | 2020-12-15 | 2021-03-26 | 浙江银轮机械股份有限公司 | Bypass valve and fluid pipeline structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312520A (en) * | 1969-08-16 | 1973-04-04 | Bosch Gmbh Robert | Fluid flow regulators |
| CN101886641A (en) * | 2009-05-12 | 2010-11-17 | 上海立新液压有限公司 | Balanced valve |
| CN203516093U (en) * | 2013-09-16 | 2014-04-02 | 合肥力威汽车油泵有限公司 | Pressure and flow control valve of steering oil pump |
| CN104196802A (en) * | 2014-09-06 | 2014-12-10 | 蚌埠液力机械有限公司 | Variable type control valve |
| CN204961446U (en) * | 2015-09-16 | 2016-01-13 | 镇江沃尔夫重工部件有限公司 | Anti -shake moves built -in speed limiting valve |
| CN210423209U (en) * | 2019-07-27 | 2020-04-28 | 蚌埠液力机械有限公司 | Integrated variable control valve |
-
2019
- 2019-07-27 CN CN201910685471.3A patent/CN110219848A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312520A (en) * | 1969-08-16 | 1973-04-04 | Bosch Gmbh Robert | Fluid flow regulators |
| CN101886641A (en) * | 2009-05-12 | 2010-11-17 | 上海立新液压有限公司 | Balanced valve |
| CN203516093U (en) * | 2013-09-16 | 2014-04-02 | 合肥力威汽车油泵有限公司 | Pressure and flow control valve of steering oil pump |
| CN104196802A (en) * | 2014-09-06 | 2014-12-10 | 蚌埠液力机械有限公司 | Variable type control valve |
| CN204961446U (en) * | 2015-09-16 | 2016-01-13 | 镇江沃尔夫重工部件有限公司 | Anti -shake moves built -in speed limiting valve |
| CN210423209U (en) * | 2019-07-27 | 2020-04-28 | 蚌埠液力机械有限公司 | Integrated variable control valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692154A (en) * | 2020-06-23 | 2020-09-22 | 三一海洋重工有限公司 | Speed limiting valve |
| CN112555454A (en) * | 2020-12-15 | 2021-03-26 | 浙江银轮机械股份有限公司 | Bypass valve and fluid pipeline structure |
| CN112555454B (en) * | 2020-12-15 | 2023-08-11 | 浙江银轮机械股份有限公司 | Bypass valve and fluid pipeline structure |
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