CN107504213B - A kind of the proportional overflow solenoid valve and its working method of sliding valve structure - Google Patents
A kind of the proportional overflow solenoid valve and its working method of sliding valve structure Download PDFInfo
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- CN107504213B CN107504213B CN201710919244.3A CN201710919244A CN107504213B CN 107504213 B CN107504213 B CN 107504213B CN 201710919244 A CN201710919244 A CN 201710919244A CN 107504213 B CN107504213 B CN 107504213B
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- spool
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- hydraulic oil
- valve
- plug
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Classifications
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
A kind of the proportional overflow solenoid valve and its working method of sliding valve structure, the proportional overflow solenoid valve of sliding valve structure, its poppet head is put at valve pocket in the blind hole of plug, feedback cavity is formed between poppet head end face and the blind hole of plug, the forced area of hydraulic feedback power is the sectional area of poppet head, maximum is controlled hydraulic size and is determined by poppet head diameter, and unrelated with the diameter of entire spool, and the conflicting situation of the two will not occur.Also without being easy to influence reliability or influencing the structure of performance.
Description
Technical field
The present invention relates to a kind of proportional overflow solenoid valves of sliding valve structure.
Background technique
The function of proportional overflow solenoid valve is the hydraulic of the hydraulic oil inlet P of control, the control of one fixed size of every input
Electric current can will realize this function by hydraulic oil inlet P hydraulic control in a fixed value, and spool need to be made to have fixed face
Product bears the hydraulic coupling of hydraulic oil inlet P, to make spool by one and the hydraulic directly proportional hydraulic coupling of hydraulic oil inlet P
Effect, when to the control electric current of proportional overflow solenoid valve input fixed size, electromagnetic force of the spool by fixed size,
Only electromagnetic force, hydraulic coupling suffered by the spool, spring force three balance when spool can just stablize in some position, otherwise spool
It can move, change hydraulic oil inlet P to the channel cross-sectional area of hydraulic oil outlet T, and then the size of hydraulic coupling is adjusted, until three
Dynamic balance.
Existing overflow valve realizes pressure feedback using the structure of plunger tip, and plunger tip is inserted into main valve plug, and main valve plug can be along
The inner cavity of plunger tip sliding, plunger tip end face and main valve plug forms feedback cavity, it the shortcomings that be: due to main valve plug, valve pocket, plunger tip it
Between want relative motion, so between main valve plug and valve pocket, can all have gap between main valve plug and plunger tip, lead in the process of movement
The eccentric effect that radial force is generated to plunger tip can occur for spool, and plunger tip is elongated structure, and only one section is fixed its remaining part
Divide vacantly, bending deformation is easy to happen under the action of radial force, the place that plunger tip is connect with valve pocket is easily broken off, and such
The structure end hanging when there is vibration can shake, to increase the abrasion between main valve plug, influence reliability.And plunger tip is such as
Fruit will lean on hydraulic coupling that plunger tip is pressed in valve pocket bottom using the structure floated, when hydraulic coupling is smaller or electromagnetic force changes ratio
Frictional force when larger due to plunger tip between main valve plug may be detached from together with valve pocket and main valve plug there is a situation where plunger tip to be moved,
To influence the performance of valve.
It is existing another kind overflow valve by spool processing channel make A mouthfuls of hydraulic oil to valve pocket bottom, valve pocket bottom
Form feedback cavity between portion and entire spool end, it the shortcomings that be: the forced area of hydraulic feedback power be valve core diameter most
Most sectional area, and the requirement of the two is easy mutually to conflict, the purpose for introducing hydraulic feedback power is in order to by it and electromagnetism
A mouthfuls of Balancing relization of hydraulic control of power, when coil parameter is fixed, the maximum value of electromagnetic force is certain, and maximum hydraulic pressure feedback force is just
Centainly, and hydraulic feedback power is equal to the hydraulic product with forced area, when the A of design mouth maximum hydraulic pressure is relatively high, hydraulic pressure reverse
The forced area for presenting power is small, and the diameter of spool is small, causes the hole machined on the runner and valve pocket on spool relatively difficult even
It is not capable of processing, when the A of design mouth maximum hydraulic pressure is smaller, the forced area of hydraulic feedback power is big, and the diameter of spool is big, causes
The size of entire valve is big.
Summary of the invention
In view of the above technical problems, the present invention proposes that a kind of proportional overflow solenoid valve of sliding valve structure, poppet head are stretched
At into valve pocket in the blind hole of plug, feedback cavity, the stress of hydraulic feedback power are formed between poppet head end face and the blind hole of plug
Area is the sectional area of poppet head, and maximum is controlled hydraulic size and is determined by poppet head diameter, and straight with entire spool
Diameter is unrelated, and the conflicting situation of the two will not occur.Also without being easy to influence reliability or influencing the structure of performance.
In order to achieve the above technical purposes, the present invention uses following specific technical solution:
A kind of proportional overflow solenoid valve of sliding valve structure, including proportion electro-magnet, spool, valve pocket and plug, the valve pocket
One end connect with proportion electro-magnet, the other end of valve pocket is fixedly connected with the plug；It is located at proportion electro-magnet in valve pocket and blocks up
There is the spool bore of a tubular structure, the spool is set in the spool bore and can be along the axis of the spool bore between head
Hydraulic oil inlet P and hydraulic oil outlet T are radially machined with to sliding, on valve pocket；
The spool includes the first spool section, the second spool section, third spool section and the 4th spool section, wherein first
Spool section diameter is identical with third spool section diameter, and the periphery and spool bore of the first spool section and third spool section is interior
Disc cooperatively forms band；
The diameter of second spool section is less than the first spool section and third spool section, the periphery and spool bore of the second spool section
Inner headed face between form a hydraulic cavities, the hydraulic cavities communicate with hydraulic oil inlet P；
It is machined with a blind hole towards the side of spool on the plug, the 4th spool section on spool is inserted into the blind hole
With the blind hole wall surface pressure feedback chamber is formed, being machined on the spool communicates hydraulic oil inlet P with pressure feedback chamber
Communicating passage, specifically: the first intercommunicating pore is radially machined in the second spool section, spool is close to the end face edge of the plug
Spool is axially machined with the second intercommunicating pore, and two intercommunicating pores communicate to form the communicating passage.
Rear end on the valve pocket positioned at spool bore is successively arranged two unequal cylindrical holes of diameter, is the first circle respectively
Post holes and the second cylindrical hole, the first cylindrical hole internal clearance are cooperatively connected the plug, are fixedly connected in second cylinder
There is an annular briquetting.
Using threaded connection or interference fit between the annular briquetting and the second cylindrical hole of valve pocket.
The invention also discloses a kind of working methods of proportional overflow solenoid valve based on the sliding valve structure, work as solenoid valve
When no power, the hydraulic oil of hydraulic oil inlet P enters pressure feedback chamber, generates the hydraulic coupling far from plug to spool, makes
Spool is mobile to the direction far from plug, occurs increasing amount of opening between spool and hydraulic oil outlet T, and hydraulic oil is from liquid
Hydraulic fluid port T outflow, the hydraulic decline of hydraulic oil inlet P are extruded, while the mobile pressuring spring of spool makes spring force become larger；
When hydraulic coupling is equal to spring force, spool is in equilibrium state, and spool no longer moves, and the hydraulic of hydraulic oil inlet P will
It is fixed on a smaller value, control electric current inputs proportion electro-magnet coil, and the spool push rod of proportion electro-magnet exports electromagnetism
Thrust makes spool to close to the movement of the direction of plug, and the amount of opening between spool and hydraulic oil outlet T becomes smaller, hydraulic oil outlet T
Hydraulic fluid flow rate become smaller, the hydraulic rising of hydraulic oil inlet P, while spring force becomes smaller；
When hydraulic coupling is equal to the resultant force of spring force and electromagnetic force, spool is in equilibrium state, and spool no longer moves, hydraulic
The hydraulic of oil inlet P no longer rises, and hydraulic oil inlet P when electromagnetic force more big valve core is stablized is hydraulic bigger, until hydraulic fuel-displaced
Mouth T is fully sealed.
The beneficial effects of the present invention are:
A kind of proportional overflow solenoid valve of sliding valve structure of the present invention, poppet head are put at valve pocket in the blind hole of plug, valve
Feedback cavity is formed between core print end surface and the blind hole of plug, the forced area of hydraulic feedback power is the sectional area of poppet head,
Maximum is controlled hydraulic size and is determined by poppet head diameter, and unrelated with the diameter of entire spool, and the two will not occur and mutually rush
Prominent situation.
In addition, the cooperation between spool and the blind hole of plug requires again with annular using first meeting between spool and valve pocket
The assembly method of briquetting fixed plug, reduces eccentric wear, improves the reliability of solenoid valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of proportional overflow solenoid valve of the present invention；
Wherein, 1 is proportion electro-magnet；2 be spring base；3 be armature set；4 be coil rack；5 be shell；6 be coil；7
For static iron core；8 be flange；9 be valve pocket；10 be oil outlet T；11 be spool；12 be oil inlet P；13 be feedback cavity；14 be stifled
Head；15 be connector；16 be spring seat bearing；17 be spring；18 be armature lifter；19 be spool push rod；20 be static iron core axis
It holds；21 be hydraulic cavities；22 be the first intercommunicating pore；23 be the second intercommunicating pore；24 be the first spool section；25 be the second spool section；26
For third spool section；27 be the 4th spool section；28 be annular briquetting.
Specific embodiment
A kind of proportional pressure control valve of sliding valve structure of the present invention is made into one with specific embodiment with reference to the accompanying drawings of the specification
Step is described in detail.
As shown in Figure 1, a kind of proportional pressure control valve of sliding valve structure, including proportion electro-magnet 1, spool 11, valve pocket 9, plug
14 and annular briquetting 28.Solenoid valve uses the structure of slide valve, and spool 11 can be axially moved in valve pocket 9 along valve pocket, and plug 14 is solid
Be scheduled on one end of valve pocket 9, valve pocket 9 is radially machined with hydraulic oil inlet P 12 and hydraulic oil outlet T10, hydraulic oil along it is hydraulic into
Hydraulic fluid port P12 enters in solenoid valve, and spool 11 is divided into the first spool section 24, the second spool section 25, third spool section 26 according to diameter
And the 4th spool section 27, wherein 24 diameter of the first spool section is identical with third spool 26 diameters of section, and the first spool section 24
Band is cooperatively formed with the periphery of third spool section 26 and the inner headed face of spool bore；
The diameter of second spool section 25 is less than the first spool section 24 and third spool section 26, the periphery of the second spool section 25
A hydraulic cavities are formed between the inner headed face of spool bore, the hydraulic cavities are communicated with hydraulic oil inlet P；
Hydraulic oil inlet can control by the relative position of the first spool section 24 and hydraulic oil outlet T10 when spool 11 moves
The spool end of the switch in channel and the size of aperture between P12 and hydraulic oil outlet T10,25 periphery of the second spool section and two sides
A hydraulic cavities 21 are formed between face and the inner headed face of valve pocket 9, hydraulic cavities 21 are communicated with hydraulic oil inlet P 12, the second spool section
25 are radially machined with the first intercommunicating pore 22, and the end face of the 4th spool section 27 is machined with second intercommunicating pore 23 along axial direction, the
Two intercommunicating pores 23 are communicated with the first intercommunicating pore hole 22, and a blind hole is machined on plug 14, and the 4th spool section 27 is inserted into blind hole
It can be axially moved in blind hole along valve pocket, the end face of the 4th spool section 27 and blind hole wall surface form pressure feedback chamber 13, hydraulic cavities
21 are connected with pressure feedback chamber 13 by the first intercommunicating pore 22 and the second intercommunicating pore 23.
Hydraulic oil in hydraulic cavities 21 can generate two hydraulic couplings along valve pocket axis both direction to spool 11, due to first
Spool section 24, the diameter of third spool section 26 are identical, and the size of two hydraulic couplings is identical, contrary, cancel out each other, pressure is anti-
The hydraulic coupling far from 14 direction of plug can be generated to spool 11 by presenting the hydraulic oil in chamber 13, which is hydraulic suffered by spool 11
The resultant force of power, the forced area of 11 hydraulic coupling of spool are the sectional area of the 4th spool section 27 radially, and maximum is controlled hydraulic big
It is small to be determined by poppet head diameter, and it is unrelated with the diameter of entire spool, the conflicting situation of the two will not occur.
There is certain gap between 9 inner wall of plug 14 and valve pocket, position can be in valve pocket 9 along the radial fine tuning of valve pocket 9, dress
Spool 11 is first packed into valve pocket 9 by timing, then plug 14 is packed into valve pocket 9, will be in the blind hole of the 4th spool section 27 insertion plug 14
Keep the two good fit, then annular briquetting 28 is packed into valve pocket 9, plug 14 is pressed on the limited step of valve pocket 9, to guarantee
It is concentric between spool 11 and the blind hole of plug 14 between spool 11 and valve pocket 9, eccentric wear is reduced, the reliability of solenoid valve is improved,
Using threaded connection or interference fit between annular briquetting 28 and valve pocket 9.
A kind of course of work of the proportional pressure control valve of sliding valve structure of the present invention is:
When solenoid valve no power, the hydraulic oil of hydraulic oil inlet P 12 enters pressure feedback chamber 13, generates one to spool 11
The hydraulic coupling of a separate plug 14 keeps spool 11 mobile to the direction far from plug 14, between spool 11 and hydraulic oil outlet T10
There is increasing amount of opening, hydraulic oil is flowed out from hydraulic oil outlet T10, the hydraulic decline of hydraulic oil inlet P 12, while valve
The mobile pressuring spring 17 of core 11 makes spring force become larger, and when hydraulic coupling is equal to spring force, spool 11 is in equilibrium state, spool
11 no longer move, and the hydraulic of hydraulic oil inlet P 12 will be fixed on a smaller value.It controls electric current and inputs proportion electro-magnet 1
The spool push rod 19 of coil 6, proportion electro-magnet 1 exports electromagnetic push, makes spool 11 to mobile, the spool close to the direction of plug 14
Amount of opening between 11 and hydraulic oil outlet T10 becomes smaller, and the hydraulic fluid flow rate of hydraulic oil outlet T10 becomes smaller, hydraulic oil inlet P 12
Hydraulic rising, while spring force becomes smaller, and when hydraulic coupling is equal to the resultant force of spring force and electromagnetic force, spool 11 is in equilibrium-like
State, spool 11 no longer move, and hydraulic the hydraulic of oil inlet P 12 no longer rises, electromagnetic force get over big valve core 11 stablize when it is hydraulic into
Hydraulic fluid port P12 is hydraulic bigger, until hydraulic oil outlet T10 is fully sealed.
Although the preferred embodiment of the present invention has been described in detail above, it is to be clearly understood that for this field
Technical staff for, the invention may be variously modified and varied.Done within the spirit and principles of the present invention
What modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of proportional overflow solenoid valve of sliding valve structure, including proportion electro-magnet, spool, valve pocket and plug, the valve pocket
One end is connect with proportion electro-magnet, and the other end of valve pocket is fixedly connected with the plug；It is located at proportion electro-magnet and plug in valve pocket
Between the spool bore with a tubular structure, the spool is set in the spool bore and can be along the axial direction of the spool bore
Sliding, solenoid valve casing bottom are equipped with spring base, and spool passes through spring and the spring base power transmission connection away from one end of plug,
Hydraulic oil inlet P and hydraulic oil outlet T are radially machined on valve pocket；
It is characterized by: the spool includes the first spool section, the second spool section, third spool section and the 4th spool section,
In, the first spool section diameter is identical with third spool section diameter, and the periphery and valve of the first spool section and third spool section
The inner headed face of core bore cooperatively forms band；
The diameter of second spool section less than the first spool section and third spool section, the periphery of the second spool section and spool bore it is interior
A hydraulic cavities are formed between disc, the hydraulic cavities are communicated with hydraulic oil inlet P；
It is machined with a blind hole towards the side of spool on the plug, the 4th spool section on spool is inserted into the blind hole and institute
It states blind hole wall surface and forms pressure feedback chamber, be machined with the connection for communicating hydraulic oil inlet P with pressure feedback chamber on the spool
Channel, specifically: the first intercommunicating pore is radially machined in the second spool section, spool is close to the end face of the plug along spool
It axially is machined with the second intercommunicating pore, two intercommunicating pores communicate to form the communicating passage.
2. according to the proportional overflow solenoid valve of sliding valve structure described in claims 1, it is characterised in that: be located at valve on the valve pocket
The rear end of core bore is successively arranged two unequal cylindrical holes of diameter, is the first cylindrical hole and the second cylindrical hole respectively, and described
One cylindrical hole internal clearance is cooperatively connected the plug, and an annular briquetting is fixedly connected in second cylinder.
3. according to the proportional overflow solenoid valve of sliding valve structure described in claims 2, it is characterised in that: the annular briquetting and valve
Using threaded connection or interference fit between second cylindrical hole of set.
4. a kind of working method of the proportional overflow solenoid valve based on sliding valve structure described in claim 1, it is characterised in that:
When solenoid valve no power, the hydraulic oil of hydraulic oil inlet P enters pressure feedback chamber, generates one far from plug to spool
Hydraulic coupling, keep spool mobile to the direction far from plug, increasing opening occur between spool and hydraulic oil outlet T
Amount, hydraulic oil are flowed out from hydraulic oil outlet T, the hydraulic decline of hydraulic oil inlet P, while the mobile pressuring spring of spool makes spring
Power becomes larger；
When hydraulic coupling is equal to spring force, spool is in equilibrium state, and spool no longer moves, and the hydraulic of hydraulic oil inlet P will be fixed
In a smaller value, controlling electric current and input proportion electro-magnet coil, the spool push rod of proportion electro-magnet exports electromagnetic push,
Make spool to close to the movement of the direction of plug, the amount of opening between spool and hydraulic oil outlet T becomes smaller, the liquid of hydraulic oil outlet T
Pressure oil flow becomes smaller, the hydraulic rising of hydraulic oil inlet P, while spring force becomes smaller；
When hydraulic coupling is equal to the resultant force of spring force and electromagnetic force, spool is in equilibrium state, and spool no longer moves, hydraulic oil inlet
Mouth the hydraulic of P no longer rises, and hydraulic oil inlet P when electromagnetic force more big valve core is stablized is hydraulic bigger, until hydraulic oil outlet T is complete
It is sealed entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919244.3A CN107504213B (en) | 2017-09-30 | 2017-09-30 | A kind of the proportional overflow solenoid valve and its working method of sliding valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919244.3A CN107504213B (en) | 2017-09-30 | 2017-09-30 | A kind of the proportional overflow solenoid valve and its working method of sliding valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107504213A CN107504213A (en) | 2017-12-22 |
| CN107504213B true CN107504213B (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710919244.3A Active CN107504213B (en) | 2017-09-30 | 2017-09-30 | A kind of the proportional overflow solenoid valve and its working method of sliding valve structure |
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| CN (1) | CN107504213B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260025B (en) * | 2019-05-31 | 2024-02-06 | 陕西法士特齿轮有限责任公司 | Proportional electromagnetic valve for controlling clutch |
| CN111151034B (en) * | 2020-01-03 | 2021-11-09 | 中国核电工程有限公司 | Flow regulating device and mixer-settler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2345768A1 (en) * | 1972-09-11 | 1974-03-21 | Applied Power Inc | PROPORTIONAL ACTUATING DEVICE AND CONTROL VALVE COMBINATION EQUIPPED WITH IT |
| US5309944A (en) * | 1992-05-19 | 1994-05-10 | Kayaba Kogyo Kabushiki Kaisha | Electromagnetic proportional pressure reducing valve |
| CN1603635A (en) * | 2004-11-05 | 2005-04-06 | 宁波华液机器制造有限公司 | Proportional differential pressure control valve |
| KR101192166B1 (en) * | 2012-05-14 | 2012-10-17 | 주식회사 유니크 | Solenoid valve |
| CN103032619A (en) * | 2012-12-14 | 2013-04-10 | 兰溪市中元电器有限公司 | Two-position three-way inverse proportion decompression electromagnetic valve for AT (Automatic Transmission) |
| CN204493770U (en) * | 2015-01-16 | 2015-07-22 | 徐工集团工程机械股份有限公司 | Changeover valve core, commutation connection and load sensing multi-way valve |
-
2017
- 2017-09-30 CN CN201710919244.3A patent/CN107504213B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2345768A1 (en) * | 1972-09-11 | 1974-03-21 | Applied Power Inc | PROPORTIONAL ACTUATING DEVICE AND CONTROL VALVE COMBINATION EQUIPPED WITH IT |
| US5309944A (en) * | 1992-05-19 | 1994-05-10 | Kayaba Kogyo Kabushiki Kaisha | Electromagnetic proportional pressure reducing valve |
| CN1603635A (en) * | 2004-11-05 | 2005-04-06 | 宁波华液机器制造有限公司 | Proportional differential pressure control valve |
| KR101192166B1 (en) * | 2012-05-14 | 2012-10-17 | 주식회사 유니크 | Solenoid valve |
| CN103032619A (en) * | 2012-12-14 | 2013-04-10 | 兰溪市中元电器有限公司 | Two-position three-way inverse proportion decompression electromagnetic valve for AT (Automatic Transmission) |
| CN204493770U (en) * | 2015-01-16 | 2015-07-22 | 徐工集团工程机械股份有限公司 | Changeover valve core, commutation connection and load sensing multi-way valve |
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| CN107504213A (en) | 2017-12-22 |
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