CN106762910B - A kind of modified logical valve - Google Patents
A kind of modified logical valve Download PDFInfo
- Publication number
- CN106762910B CN106762910B CN201611252364.4A CN201611252364A CN106762910B CN 106762910 B CN106762910 B CN 106762910B CN 201611252364 A CN201611252364 A CN 201611252364A CN 106762910 B CN106762910 B CN 106762910B
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- China
- Prior art keywords
- valve
- spool
- cover board
- accommodating chamber
- valve pocket
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- 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.)
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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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F15B13/12—Special measures for increasing the sensitivity of the system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
- Valve Housings (AREA)
Abstract
The present invention provides a kind of modified logical valves, belong to control valve technical field.It solves the problems, such as that existing logical valve response speed is slow.This modified logical valve includes：Valve body；Cover board is set on valve body and the outer surface of cover board is provided with pilot valve, is provided with the control oil circuit for being connected and being used for hydraulic oil circulation with pilot valve on the cover board；Valve pocket is inserted on cover board, and the main oil inlet communicated and main oil outlet are offered on valve pocket；Spool is arranged on valve pocket and is formed with accommodating chamber between spool and valve pocket；Hydraulic oil can be directed into accommodating chamber by pilot valve and spool is pushed to be moved axially on valve pocket by the control oil circuit so that spool can make main oil inlet and main oil outlet be connected or block.This modified logical valve has the advantages that fast response time, good airproof performance.
Description
Technical field
The invention belongs to control valve technical fields, are related to a kind of modified logical valve.
Background technology
Logical valve is inserted into inserting valve body, is controlled by the size of the unlatching of logical valve, closing action and open amount
Liquid flow path direction, pressure and the flow of working connection.Logical valve is chiefly used in the hydraulic system of high pressure, big flow or especially big flow,
Practical applicable mechanical range：Heavy duty machine tools, bending machine, die casting machine, plastic injection molding machine, brass mill machine and various heavy industrial machines
And vehicle and ship etc..
Existing logical valve includes being made of cover board, spool, valve pocket and spring etc., and cover board and valve pocket are inserted on valve body,
Spool and spring may be contained on valve pocket, and being opened up on valve pocket can control there are two main hydraulic fluid port and a control port, control port
Spool processed moves axially in valve pocket and two main oil inlets is made to communicate or close, but there are following technologies to ask for the logical valve
Topic：1, valve pocket is set on cover board outer surface in the technical solution and both valve pocket and cover board are connected by screw so that
There are gaps between valve pocket and cover board so that the poor sealing of both valve pocket and cover board；2, in the technical solution, work as control port
It is communicated with fuel tank, spool only pushes spool axial movement by the pressure that hydraulic oil in main hydraulic fluid port generates, and leads to the response of spool
Speed is slow.
In conclusion for the deficiency for solving on existing logic valve arrangement, need to design a kind of fast response time, good airproof performance
Modified logical valve.
Invention content
The purpose of the present invention is there is the above problem in view of the prior art, it is proposed that a kind of fast response time, leakproofness
Good modified logical valve.
Object of the invention can be realized by the following technical scheme：A kind of modified logical valve, including：
Valve body；
Cover board is set on valve body and the outer surface of cover board is provided with pilot valve, is provided on the cover board and guide
Valve is connected and is used for the control oil circuit of hydraulic oil circulation；
Valve pocket is inserted on cover board, and the main oil inlet communicated and main oil outlet are offered on valve pocket；
Spool is arranged on valve pocket and is formed with accommodating chamber between spool and valve pocket；
Hydraulic oil can be directed into accommodating chamber by pilot valve and push spool axial on valve pocket by the control oil circuit
It is mobile so that spool can make main oil inlet and main oil outlet be connected or block；
It is described control oil circuit include be set on cover board and communicated with pilot valve control oil inlet pipe, control flowline and
The oil inlet of control oil pipe, control oil inlet pipe, control flowline and control oil pipe is respectively positioned on the same end face of cover board, is being covered
The oil guide pipe that both ends are communicated with pilot valve and accommodating chamber respectively is additionally provided on plate；
The accommodating chamber includes the first accommodating chamber and the second accommodating chamber, and the rear end face and valve pocket of the spool form described the
One accommodating chamber, first accommodating chamber are communicated by oil guide pipe with pilot valve, are surrounded into described at the middle part of spool and valve pocket
Second accommodating chamber, second accommodating chamber are communicated with control oil inlet pipe；
Annular step surface is offered on the spool, ring-shaped step corresponding with annular step surface is offered on valve pocket
Slot, the annular step surface and ring-shaped step slot form second accommodating chamber, offered on the spool multiple oil guiding holes and
The both ends of each oil guiding hole are communicated with the second accommodating chamber and control oil inlet pipe respectively.
In a kind of above-mentioned modified logical valve, annular accommodating chamber is formed between valve pocket and cover board, on the cover board
It is provided with the connecting tube that both ends are communicated with control oil inlet pipe and annular accommodating chamber respectively.
In a kind of above-mentioned modified logical valve, multiple connecting holes through cover board are offered on the cover board, it is each to connect
One end that screw and screw are both provided in hole passes through connecting hole and is threadedly connected on valve body.
In a kind of above-mentioned modified logical valve, the upper surface of the spool offers mounting groove, is set in mounting groove
The upper end for being equipped with elastic component and the elastic component is resisted against on cover board.
In a kind of above-mentioned modified logical valve, the outer surface of valve pocket is provided with multiple first sealing rings, described
The both sides of one sealing ring are contacted with valve pocket and cover board respectively.
In a kind of above-mentioned modified logical valve, the outer surface of spool is provided with multiple second sealing rings, described
The both sides of two sealing rings are contacted with spool and valve pocket respectively.
Compared with prior art, the present invention at least has the advantages that：
1, the present invention includes cover board, valve pocket and spool, and the upper end of wherein valve pocket is inserted on cover board, ensure that cover board and
The stability of both valve pockets connection, and ensure that the leakproofness of both cover board and valve pocket；
2, the control oil circuit to circulate for hydraulic oil is offered on the cover board, and appearance is formed between the two in spool and valve pocket
Receive chamber, accommodating chamber can be directed into and can generate control pressure of the promotion spool along valve pocket axially upwards by controlling the hydraulic oil in oil circuit
Power, meanwhile, hydraulic oil can also generate main input pressure axially upwards, both control pressure and main input pressure in main oil inlet
It is common to push spool movement, improve the response speed of spool.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the sectional view of the present invention.
Fig. 3 is the sectional view at another visual angle of the present invention.
Fig. 4 is the sectional view at another visual angle of the present invention.
In figure, 100, cover board；110, pilot valve；120, connecting hole；200, valve pocket；210, main oil inlet；220, master is fuel-displaced
Mouthful；240, the second accommodating chamber；260, connecting tube；300, spool；320, oil guiding hole；400, oil inlet pipe is controlled；410, it controls fuel-displaced
Pipe；420, control oil pipe；430, oil guide pipe；600, spring；700, the first sealing ring；710, the second sealing ring.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figures 1 to 4, this modified logical valve includes cover board 100, valve pocket and spool 300, wherein cover board 100
It is installed on valve body (not marked in figure) and is fixed with pilot valve 110 in the outer surface of cover board 100, use is also equipped on cover board 100
In the control oil circuit of hydraulic oil circulation, valve pocket is inserted on cover board 100, and main oil inlet 210 is offered on valve deck and master is fuel-displaced
Mouth 220, spool 300 is arranged on valve pocket, and accommodating chamber is formed between spool 300 and valve pocket, during the work time, control oil
Hydraulic oil can be directed into accommodating chamber by road by pilot valve 110, and hydraulic oil can push spool 300 to be moved axially along valve pocket,
Make the conducting of both winner's oil inlet 210 and main oil outlet 220 or blocks.
The connecting hole 120 through cover board 100 is offered in the upper surface of cover board 100, and it is in ladder that connecting hole 120, which includes,
Type setting the first connecting hole and the second connecting hole, the first connecting hole and the second connecting hole coaxial arrangement and the first connecting hole it is straight
The diameter that diameter is more than the second connecting hole is provided with screw during installation on the first connecting hole, and one end of screw passes through
Second connecting hole is simultaneously threadedly connected on valve body so that stability that both cover board 100 and valve body are connect simultaneously ensure that cover board 100
With the leakproofness of valve body.
Above-mentioned control oil circuit include be set on cover board 100 and communicated with pilot valve 110 control oil inlet pipe 400, control
Flowline 410 and control oil pipe 420, wherein control oil inlet pipe 400, control flowline 410 and control oil pipe 420 into
Hydraulic fluid port is opened on the same end face of cover board 100, facilitates control oil inlet pipe 400, control flowline 410 and control oil pipe
The installation of 420 three's oil circuits, and control oil inlet pipe 400, control flowline 410 and 420 three of control oil pipe and surround respectively
Valve pocket is arranged, and specifically, control oil inlet pipe 400 is set to the left side of valve pocket, and control flowline 410 is set to the top of valve pocket,
Control oil pipe 420 is set to the right side of valve pocket.
Preferably, the oil guide pipe 430 that both ends are communicated with pilot valve 110 and accommodating chamber respectively is additionally provided on cover board 100,
Control valve can control oil guide pipe 430 by pilot valve 110 and be turned on or off.
Fixing groove is offered at the middle part of cover board 100, above-mentioned valve pocket, which is withheld, to be set in fixing groove, and above-mentioned spool 300 is worn
On valve pocket, wherein both valve pocket and cover board 100 are connected and remains stationary state, and spool 300 can axially be moved along valve pocket
It is dynamic.
The through-hole through valve pocket is offered in the middle part of valve pocket, when valve pocket is threadedly connected on valve body, through-hole and main oil
Road communicates and is equipped in through-hole spool 300, is main oil inlet 210 to the lower end of through-hole, is opened on the side wall of valve pocket
Equipped with multiple main oil outlets 220 through sleeve side wall, multiple main oil outlets 220 and the outside annular in shape for being uniformly distributed in valve pocket
On wall, and main oil outlet 220 is communicated with main oil inlet 210, and annular abutment portion is provided on the inner wall of valve pocket and annular is supported
Relying part is between main oil inlet 210 and main oil outlet 220.
When the lower end of spool 300 is resisted against in annular abutment portion, spool 300 can block main oil inlet 210 and block master
Oil inlet 210 and main oil outlet 220 are connected；When spool 300 is along through-hole axially sliding simultaneously separate annular abutment portion, and work as
When the lower face of spool 300 is tangent with main oil outlet 220, the hydraulic oil in main oil inlet 210 can be outside by main oil outlet 220
Export, the spacing that spool 300 moves in the axial direction can control the open amount of main oil outlet 220 and realize the water conservancy diversion of hydraulic oil
Rate.
Above-mentioned accommodating chamber can be divided into the first accommodating chamber 310 and the second accommodating chamber 240, wherein in 300 end face of spool and valve pocket
It is formed with the first accommodating chamber 310 between the two, one end of above-mentioned oil guide pipe 430 is communicated with the first accommodating chamber 310, oil guide pipe 430
The other end communicated with pilot valve 110；Second accommodating chamber 240 is set to the middle part of spool 300 and valve pocket and the second accommodating chamber 240
It is communicated with control oil inlet pipe 400.
Annular step surface is offered on spool 300, ring-shaped step corresponding with annular step surface is offered on valve pocket
Slot forms second accommodating chamber 240 between the two in annular step surface and ring-shaped step slot, and the second accommodating chamber 240 with
Control oil inlet pipe 400 communicates.
Preferably, offer multiple oil guiding holes 320 on spool 300, the both ends of oil guiding hole 320 respectively with the second accommodating chamber
240 communicate with control oil inlet pipe 400 so that the hydraulic oil in control oil inlet pipe 400 can be directed into the second appearance by oil guiding hole 320
It receives in chamber 240, while improving the rate that hydraulic oil is directed into the second accommodating chamber 240, improve the response speed of the present invention.
Further, annular accommodating chamber 250 is formed between valve pocket and cover board 100, each oil guiding hole 320 holds with annular
Chamber 250 of receiving communicates, and the connection that both ends are communicated with control oil inlet pipe 400 and annular accommodating chamber 250 respectively is offered on cover board 100
Pipe 260, the hydraulic pressure controlled in oil inlet pipe 400 have and can be directed into annular accommodating chamber 250 by connecting tube 260, and annular is held
The hydraulic oil in chamber 250 of receiving can be directed into the second accommodating chamber 240 by oil guiding hole 320.
Further, the axis parallel of the axial line of above-mentioned oil guiding hole 320 and connecting tube 260 and it is formed with difference of height,
The axial line of connecting tube 260 be located at the top of the axial line of oil guiding hole 320 and the diameter of connecting tube 260 and oil guiding hole 320 it is straight
Diameter is equal, and the hydraulic oil in annular accommodating chamber 250 is avoided to be back to the production of phenomenon in control oil inlet pipe 400 by connecting tube 260
It is raw.
Mounting groove is offered in the upper surface of spool 300, the both ends point of elastic component and elastic component are provided in mounting groove
It is not resisted against between spool 300 and cover board 100, elastic component deformation energy generates elastic force to spool 300, and elastic force can improve valve
The reset efficiency of core 300.
Preferably, above-mentioned elastic component is spring 600.
Working principle of the present invention is as follows：
In the initial state, control oil pipe 420 and pilot valve 110 are opened, and the hydraulic oil in control oil pipe 420 is directed into the
Control pressure straight down is generated in one accommodating chamber 310 and to spool 300；Hydraulic oil in control oil inlet pipe 400 can pass through
Connecting tube 260 is directed into annular accommodating chamber 250 and is directed into the second accommodating chamber 240 and to spool 300 by oil guiding hole 320
Generate input pressure straight up；The deformation of spring 600 simultaneously simultaneously generates elastic force straight down to spool 300；Main oil inlet
Hydraulic oil in mouth 210 can generate spool 300 main input pressure straight up；
It is hereby understood that the active force of direction straight down the sum of pressure and elastic force in order to control, spool 300 on spool 300
The active force of upper direction straight up is the sum of input pressure and main input pressure, and the sum of control pressure and elastic force are more than
The sum of input pressure and main input pressure so that the lower end of spool 300 is resisted against in annular abutment portion, main oil inlet 210 and master
Both oil outlets 220 block；
When control oil pipe 420 and pilot valve 110 are closed, the hydraulic oil in the first accommodating chamber 310 is led by oil guide pipe 430
Go out to control flowline 410, controlling the hydraulic oil in oil inlet pipe 400 can be directed into the second accommodating chamber 240 and generate vertically
Upward input pressure, while the deformation of spring 600 and the elastic force to the generation of spool 300 straight down；In main oil inlet 210
Hydraulic oil can generate spool 300 main input pressure straight up；
It is hereby understood that the active force of direction straight down is elastic force on spool 300, on spool 300, direction is straight up
Active force be the sum of input pressure and main input pressure, and the sum of input pressure and main input pressure be more than elastic force, make
It obtains spool 300 to move axially upwards along through-hole, the conducting of both main oil inlet 210 and main oil outlet 220.
Preferably, the outer surface of valve pocket is provided with multiple first sealing rings 700, the both sides difference of the first sealing ring 700
It is contacted with valve pocket and cover board 100, ensure that the sealing of both valve pocket and cover board 100, avoid the occurrence of the production of hydraulic fluid leak phenomenon
It is raw.
Further, the outer surface of spool 300 is provided with multiple second sealing rings 710, the both sides of the second sealing ring 710
It is contacted respectively with spool 300 and valve pocket, ensure that the sealing of both spool 300 and valve pocket, avoid the occurrence of hydraulic fluid leak phenomenon
Generation.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of modified logical valve, which is characterized in that including：
Valve body；
Cover board is set on valve body and the outer surface of cover board is provided with pilot valve, is provided on the cover board and pilot valve phase
Connect and be used for the control oil circuit of hydraulic oil circulation；
Valve pocket is inserted on cover board, and the main oil inlet communicated and main oil outlet are offered on valve pocket；
Spool is arranged on valve pocket and is formed with accommodating chamber between spool and valve pocket；
Hydraulic oil can be directed into accommodating chamber by pilot valve and spool is pushed to be moved axially on valve pocket by the control oil circuit,
Enable spool that main oil inlet and main oil outlet is made to be connected or block；
The control oil circuit includes control oil inlet pipe, control flowline and the control for being set on cover board and being communicated with pilot valve
The oil inlet of oil pipe, control oil inlet pipe, control flowline and control oil pipe is respectively positioned on the same end face of cover board, on the cover board
It is additionally provided with the oil guide pipe that both ends are communicated with pilot valve and accommodating chamber respectively；
The accommodating chamber includes the first accommodating chamber and the second accommodating chamber, and the rear end face and valve pocket of the spool, which form described first, to be held
Receive chamber, first accommodating chamber is communicated with pilot valve by oil guide pipe, surrounded into described second at the middle part of spool and valve pocket
Accommodating chamber, second accommodating chamber are communicated with control oil inlet pipe；
Annular step surface is offered on the spool, ring-shaped step slot corresponding with annular step surface, institute are offered on valve pocket
It states annular step surface and ring-shaped step slot forms second accommodating chamber, multiple oil guiding holes and each Oil Guide are offered on the spool
The both ends in hole are communicated with the second accommodating chamber and control oil inlet pipe respectively.
2. a kind of modified logical valve according to claim 1, is formed with annular accommodating chamber between valve pocket and cover board,
The connecting tube that both ends are communicated with control oil inlet pipe and annular accommodating chamber respectively is provided on cover board.
3. a kind of modified logical valve according to claim 2, offers multiple connecting holes through cover board on the cover board,
One end that screw and screw are both provided in each connecting hole passes through connecting hole and is threadedly connected on valve body.
4. a kind of modified logical valve according to claim 3, the upper surface of spool offers mounting groove, in mounting groove
The upper end for being provided with elastic component and the elastic component is resisted against on cover board.
5. a kind of modified logical valve according to claim 4 is provided with multiple first sealing rings in the outer surface of valve pocket,
The both sides of first sealing ring are contacted with valve pocket and cover board respectively.
6. a kind of modified logical valve according to claim 5 is provided with multiple second sealing rings in the outer surface of spool,
The both sides of second sealing ring are contacted with spool and valve pocket respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252364.4A CN106762910B (en) | 2016-12-30 | 2016-12-30 | A kind of modified logical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252364.4A CN106762910B (en) | 2016-12-30 | 2016-12-30 | A kind of modified logical valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762910A CN106762910A (en) | 2017-05-31 |
| CN106762910B true CN106762910B (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611252364.4A Active CN106762910B (en) | 2016-12-30 | 2016-12-30 | A kind of modified logical valve |
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| CN106089833A (en) * | 2016-08-04 | 2016-11-09 | 华侨大学 | A kind of proportional overflow choke valve |
| CN205779982U (en) * | 2016-07-12 | 2016-12-07 | 芜湖繁星教育咨询有限公司 | Pilot controller |
| CN206346979U (en) * | 2016-12-30 | 2017-07-21 | 宁波华液机器制造有限公司 | A kind of modified logical valve |
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2016
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203476869U (en) * | 2013-07-31 | 2014-03-12 | 韶关比亚迪实业有限公司 | Multiway valve, hydraulic system and fork |
| CN105114382A (en) * | 2015-07-28 | 2015-12-02 | 华中科技大学 | Pilot operated type overflow valve |
| CN205047559U (en) * | 2015-09-29 | 2016-02-24 | 浙江华益精密机械股份有限公司 | Hydraulic control valve |
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| CN205260913U (en) * | 2015-12-31 | 2016-05-25 | 宁波华液机器制造有限公司 | Guide's valve that commutates |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106762910A (en) | 2017-05-31 |
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