CN108374917B - Low leakage flow proportional control valve and oil pump electromagnetic valve with same - Google Patents
Low leakage flow proportional control valve and oil pump electromagnetic valve with same Download PDFInfo
- Publication number
- CN108374917B CN108374917B CN201810376991.1A CN201810376991A CN108374917B CN 108374917 B CN108374917 B CN 108374917B CN 201810376991 A CN201810376991 A CN 201810376991A CN 108374917 B CN108374917 B CN 108374917B
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- Prior art keywords
- hole
- steel ball
- valve
- central
- guide pad
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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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
- 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
- F16K1/14—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 with ball-shaped valve member
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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
- 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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- 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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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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
- 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
- F16K31/10—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with additional mechanism between armature and closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a low leakage flow rate proportional control valve, which comprises a valve sleeve, wherein an oil inlet side step hole and an oil outlet side step hole are formed in the valve sleeve, the oil inlet side step hole and the oil outlet side step hole are communicated through a central through hole, a guide pad is fixedly arranged in the oil outlet side step hole, an annular oil cavity is formed between the guide pad and the inner wall of the valve sleeve, the annular oil cavity is communicated with an oil outlet hole formed in the valve sleeve, a steel ball is arranged at the central through hole, the steel ball is arranged in a slideway of the guide pad, and through the axial movement of the steel ball in the slideway, the central through hole and the steel ball form openings with different sizes to control the flow rate of fluid by utilizing the cooperation of the steel ball and the central through hole. According to the invention, the steel ball is pushed by external force to axially move in the slideway, and the size of the opening of the valve is controlled by utilizing the cooperation of the steel ball and the central through hole, so that the control function of the fluid flow is realized, and when the steel ball is pushed to be contacted with the first step of the central through hole, the low-leakage sealing function is realized.
Description
Technical Field
The invention belongs to the technical field of automobile fuel oil supply systems, and particularly relates to a low-leakage flow proportional control valve and an oil pump electromagnetic valve with the same.
Background
Currently, there are two types of fuel metering valves for oil pumps: the slide valve type flow proportional control valve and the steel ball type flow proportional control valve are widely used, and the steel ball type flow proportional control valve is a technical upgrade performed on the slide valve type flow proportional control valve.
The existing steel ball type flow proportional control valve is in a radial oil inlet mode, has poor sealing performance, still needs to be provided with a zero oil supply unit in a fuel pump system, and has low stability for flow control.
Disclosure of Invention
The invention aims at: in order to solve the problems, the low leakage flow rate proportional control valve capable of improving the sealing reliability of the electromagnetic valve of the fuel pump, reducing the volume of an oil supply system, reducing the cost and prolonging the service life and the electromagnetic valve of the fuel pump with the control valve are provided.
The technical scheme of the invention is realized as follows: a low leakage flow proportional control valve comprising a valve housing, characterized in that: the valve sleeve is internally provided with an oil inlet side step hole and an oil outlet side step hole, the oil inlet side step hole is communicated with the oil outlet side step hole through a central through hole, a guide pad is fixedly arranged in the oil outlet side step hole, an annular oil cavity is formed between the guide pad and the inner wall of the valve sleeve, the annular oil cavity is communicated with an oil outlet hole arranged on the valve sleeve, a steel ball is arranged at the central through hole, the steel ball is arranged in a slideway of the guide pad, and through axial movement of the steel ball in the slideway, the cooperation of the steel ball and the central through hole is utilized to enable the central through hole and the steel ball to form openings with different sizes so as to control fluid flow.
According to the low leakage flow proportional control valve, the end part of the central through hole, which is close to the oil outlet side, is provided with the first step, and the first step is matched with the steel ball and is used for limiting the steel ball in a one-way manner and is in contact with the steel ball to realize low leakage sealing.
The low leakage flow proportional control valve provided by the invention has the advantages that the corresponding sections of the central through hole and the steel ball are conical, and the conical hole part of the central through hole is matched with the steel ball and is used for forming openings with different sizes to control the flow of fluid.
The invention relates to a low leakage flow rate proportional control valve, which is characterized in that a second step is arranged at the end part of a step hole on the oil inlet side of a valve sleeve, and a filter screen is arranged at the second step.
The low leakage flow rate proportional control valve is characterized in that a sealing ring groove is formed in the periphery of the valve sleeve, and the sealing ring groove is used for installing a sealing ring.
The slideway is formed by at least two guide splines which are axially extended and arranged by the guide pad, and the slideway formed by the matching of the at least two guide splines is used for limiting the radial movement of the steel ball and guiding the axial movement of the steel ball, and an oil passing gap is formed between the adjacent guide splines.
According to the low leakage flow proportional control valve, the front end part of the guide spline of the guide pad is in a sharp angle structure correspondingly matched with the taper hole part of the central through hole, and the front end part of the guide pad abuts against the bottom of the step hole of the central through hole to limit the installation position of the guide pad.
The rear end of the guide pad of the low leakage flow proportional control valve is in a disc structure, and the rear end of the guide pad is used for supporting the guide spline and is fixedly connected with the valve sleeve.
The oil pump electromagnetic valve with the low leakage flow rate proportional control valve is characterized in that the low leakage flow rate proportional control valve is arranged in an oil pump, the end part of a push rod of the electromagnetic valve is inserted into a guide pad arranged in a valve sleeve of the low leakage flow rate proportional control valve and correspondingly matched with a steel ball arranged in a slideway of the guide pad, when the valve is opened, the position of the push rod in the guide pad is controlled by controlling the change of the current of the electromagnetic valve so as to limit the opening section size of the steel ball relative to a central through hole, the control of the fluid flow rate is realized, and when the valve is closed, the steel ball is tightly attached to a first step of the central through hole under the electromagnetic thrust action of the push rod, so that the low leakage sealing is realized.
According to the oil pump electromagnetic valve, the reset spring in a compressed state is arranged in the electromagnetic valve and at the tail end of the push rod, and when the valve is closed, the steel ball is tightly attached to the first step of the central through hole under the action of electromagnetic thrust of the push rod and spring reset elastic force, so that low leakage sealing is realized.
According to the invention, the steel ball is pushed by external force to axially move in the slideway, and the size of the opening of the valve is controlled by utilizing the cooperation of the steel ball and the central through hole, so that the control function of the fluid flow is realized, and when the steel ball is pushed to be contacted with the first step of the central through hole, the low-leakage sealing function is realized.
Compared with the prior art, the invention has the following technical effects:
1. the invention realizes the low leakage sealing function, and in the fuel pump system, a zero oil supply unit can be omitted, the cost is reduced, the volume is reduced, and the weight is reduced.
2. Compared with sliding valve which uses tiny gap for sealing, the invention has better sealing performance, more reliable and long service life and low manufacturing cost under the same pressure condition because of using steel ball contact line for sealing.
3. The guide pad of the invention uses plastic products, so that the guide pad has no damage to steel balls moving in the slide way and has long service life.
4. The invention adopts the design of steel ball contact line sealing, and the steel ball is simultaneously subjected to electromagnetic thrust and the reset elastic force of the spring, so the sealing performance is reliable.
5. The invention adopts the contact sealing mode of the steel ball and the step structure, so that the radial area of the sealing part of the steel ball is smaller when the valve is closed, and the axial stress of the steel ball is smaller and the sealing performance is more reliable under the same oil pressure.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the valve housing of the present invention.
Fig. 3 and 4 are schematic views of the structure of the guide pad according to the present invention.
Fig. 5 is a schematic view of the valve of the present invention when open.
Fig. 6 is a schematic view of the valve of the present invention when closed.
Reference numerals: the valve sleeve is characterized in that the valve sleeve is 1, the oil inlet side step hole is 2, the oil outlet side step hole is 3, the central through hole is 4, the guide pad is 5, the annular oil cavity is 6, the oil outlet is 7, the steel ball is 8, the slideway is 9, the first step is 10, the second step is 11, the filter screen is 12, the sealing ring groove is 13, the sealing ring is 14, the guide spline is 15, the taper hole part is 16, the sharp angle structure is 17, the oil passing gap is 18, the disc structure is 19, the electromagnetic valve is 20, the push rod is 21, and the reset spring is 22.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-4, the low leakage flow rate proportional control valve comprises a valve sleeve 1, wherein the valve sleeve is of an integral structure or a split structure, an oil inlet side stepped hole 2 and an oil outlet side stepped hole 3 are arranged in the valve sleeve 1, the oil inlet side stepped hole 2 and the oil outlet side stepped hole 3 are communicated through a central through hole 4, a guide pad 5 is fixedly arranged in the oil outlet side stepped hole 3, an annular oil cavity 6 is formed between the guide pad 5 and the inner wall of the valve sleeve 1, the annular oil cavity 6 is communicated with an oil outlet 7 arranged on the valve sleeve 1, a steel ball 8 is arranged at the central through hole 4, the steel ball 8 is arranged in a slide 9 of the guide pad 5, and through the axial movement of the steel ball 8 in the slide 9, the central through hole 4 and the steel ball 8 form openings of different sizes to control the flow rate of fluid by utilizing the cooperation of the steel ball 8 and the central through hole 4.
The end part of the central through hole 4, which is close to the oil outlet side, is provided with a first step 10, the first step 10 is matched with the steel ball 8 and is used for unidirectional limiting of the steel ball 8 and contacting with the steel ball 8 to realize low leakage sealing, the corresponding section of the central through hole 4 and the steel ball 8 is conical, and a conical hole part 16 of the central through hole 4 is matched with the steel ball 8 and is used for forming openings with different sizes to control the fluid flow; the end part of the oil inlet side step hole 2 of the valve sleeve 1 is provided with a second step 11, a filter screen 12 is arranged at the second step 11, the filter screen is matched with the oil inlet side step hole to form an oil collecting cavity, oil filtered by the filter screen enters the oil collecting cavity, the periphery of the valve sleeve 1 is provided with a sealing ring groove 13, and the sealing ring groove 13 is used for installing a sealing ring 14.
As shown in fig. 3 and 4, the slideway 9 is formed by at least two guiding splines 15 which are axially extended by the guiding pad 5, the slideway 9 formed by combining the at least two guiding splines 15 is used for limiting the radial movement of the steel ball 8 and guiding the axial movement of the steel ball 8, an oil passing gap 18 is formed between the adjacent guiding splines 15, the front end part of the guiding spline 15 of the guiding pad 5 is in a sharp corner structure 17 correspondingly matched with the taper hole part 16 of the central through hole 4, the front end part of the guiding pad 5 is abutted against the bottom of the stepped hole of the central through hole 4 so as to limit the installation position of the guiding pad 5, the rear end of the guiding pad 5 is in a disc structure 19, and the rear end of the guiding pad 5 is used for supporting the guiding spline 15 and is fixedly connected with the valve sleeve 1.
The oil pump electromagnetic valve with the low leakage flow rate proportional control valve is arranged in an oil pump, the end part of a push rod 21 of the electromagnetic valve 20 is inserted into a guide pad 5 arranged in a valve sleeve 1 of the low leakage flow rate proportional control valve and correspondingly matched with a steel ball 8 arranged in a slideway 9 of the guide pad 5, and a return spring 22 in a compressed state is arranged in the electromagnetic valve 20 and at the tail end of the push rod 21.
As shown in fig. 5, when the valve is opened, the position of the push rod 21 in the guide pad 5 is controlled by controlling the change of the current of the electromagnetic valve to limit the opening section size of the steel ball 8 relative to the central through hole 4, so as to realize the control of the fluid flow, namely the opening size of the steel ball opening valve port is affected little by the oil pressure and can be ignored, and the control mode of the current in the electromagnetic valve to the position of the push rod in the slideway is an automatic feedback control mode, namely the electric control mode, the steel ball under different displacement is generated by the push rod, and finally the flow is controlled proportionally, namely the constant pressure condition, the current control opening size and the proportional adjustment flow; as shown in fig. 6, when the valve is closed, the steel ball 8 is tightly attached to the first step 10 of the central through hole 4 under the action of the push rod 21, so that low leakage sealing under the dual actions of electromagnetic thrust and spring restoring force is realized.
The invention has the advantages that in a certain pressure working range, the current is constant, the force applied to the steel ball under the impact of different pressures is small relative to the electromagnetic force, the small beneficial effect is realized on the opening of the valve, the higher the inlet pressure is, the higher the flow of the outlet is, the more linear the flow characteristic curve is, and the linear regulation requirement of the higher the rotating speed of the oil pump valve and the larger the flow is can be met. Meanwhile, the right side of the moving iron block assembly is provided with an axial limiting device, so that the maximum opening formed by the steel ball and the taper hole is limited, the steel ball is prevented from being forced to move under high inlet pressure, the opening is increased, the flow exceeds the upper limit, and the oil pressure safety of a later oil way is protected. The invention relieves the influence degree of opening change caused by oil pressure impact on the steel ball, the flow characteristic curve is more linear, and the performance requirement of the oil pump is met.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A low leakage flow proportional control valve comprising a valve housing (1), characterized in that: an oil inlet side step hole (2) and an oil outlet side step hole (3) are formed in the valve sleeve (1), the oil inlet side step hole (2) and the oil outlet side step hole (3) are communicated through a central through hole (4), a guide pad (5) is fixedly arranged in the oil outlet side step hole (3), an annular oil cavity (6) is formed between the guide pad (5) and the inner wall of the valve sleeve (1), the annular oil cavity (6) is communicated with an oil outlet hole (7) formed in the valve sleeve (1), a steel ball (8) is arranged at the central through hole (4), the steel ball (8) is arranged in a slide way (9) of the guide pad (5), and through axial movement of the steel ball (8) in the slide way (9), the cooperation of the steel ball (8) and the central through hole (4) is utilized, so that openings with different sizes are formed between the central through hole (4) and the steel ball (8) to control fluid flow; the slideway (9) is formed by at least two guide splines (15) which are axially extended and arranged on the guide pad (5), the slideway (9) formed by the cooperation of the at least two guide splines (15) is used for limiting the radial movement of the steel ball (8) and guiding the axial movement of the steel ball (8), and an oil passing gap (18) is formed between the adjacent guide splines (15); the front end part of a guide spline (15) of the guide pad (5) is in a sharp-angle structure (17) correspondingly matched with a taper hole part (16) of the central through hole (4), and the front end part of the guide pad (5) is abutted against the bottom of a step hole of the central through hole (4) so as to limit the installation position of the guide pad (5); the rear end of the guide pad (5) is in a disc structure (19), and the rear end of the guide pad (5) is used for supporting the guide spline (15) and is fixedly connected with the valve sleeve (1).
2. The low leakage flow rate proportional control valve of claim 1, wherein: the end part of the central through hole (4) close to one side of oil outlet is provided with a first step (10), and the first step (10) is matched with the steel ball (8) and used for unidirectional limiting of the steel ball (8) and is in contact with the steel ball (8) to realize low leakage sealing.
3. The low leakage flow rate proportional control valve of claim 2, wherein: the central through hole (4) and the corresponding section of the steel ball (8) are conical, and the conical hole part (16) of the central through hole (4) is matched with the steel ball (8) and is used for forming openings with different sizes to control the fluid flow.
4. The low leakage flow rate proportional control valve of claim 1, wherein: a second step (11) is arranged at the end part of the oil inlet side step hole (2) of the valve sleeve (1), and a filter screen (12) is arranged at the second step (11).
5. The low leakage flow rate proportional control valve of claim 1, wherein: a sealing ring groove (13) is arranged on the periphery of the valve sleeve (1), and the sealing ring groove (13) is used for installing a sealing ring (14).
6. An oil pump solenoid valve having a low leakage flow rate proportional control valve according to any one of claims 1 to 5, characterized in that: the low leakage flow rate proportional control valve is arranged in an oil pump, the end part of a push rod (21) of the electromagnetic valve (20) is inserted into a guide pad (5) arranged in a valve sleeve (1) of the low leakage flow rate proportional control valve and is correspondingly matched with a steel ball (8) arranged in a slideway (9) of the guide pad (5), when the valve is opened, the position of the push rod (21) in the guide pad (5) is controlled by controlling the change of the current of the electromagnetic valve so as to limit the opening section size of the steel ball (8) relative to a central through hole (4), the control of the fluid flow rate is realized, and when the valve is closed, the steel ball (8) is tightly attached to a first step (10) of the central through hole (4) under the electromagnetic thrust action of the push rod (21), so that the low leakage sealing is realized.
7. The oil pump solenoid valve according to claim 6, characterized in that: and a reset spring (22) in a compressed state is arranged in the electromagnetic valve (20) and at the tail end of the push rod (21), and when the valve is closed, the steel ball (8) is tightly attached to the first step (10) of the central through hole (4) under the action of electromagnetic thrust of the push rod (21) and spring reset elastic force, so that low leakage sealing is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376991.1A CN108374917B (en) | 2018-04-25 | 2018-04-25 | Low leakage flow proportional control valve and oil pump electromagnetic valve with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376991.1A CN108374917B (en) | 2018-04-25 | 2018-04-25 | Low leakage flow proportional control valve and oil pump electromagnetic valve with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108374917A CN108374917A (en) | 2018-08-07 |
| CN108374917B true CN108374917B (en) | 2024-06-04 |
Family
ID=63032831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810376991.1A Active CN108374917B (en) | 2018-04-25 | 2018-04-25 | Low leakage flow proportional control valve and oil pump electromagnetic valve with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108374917B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462476U (en) * | 1990-09-29 | 1992-05-28 | ||
| JPH09196218A (en) * | 1996-01-17 | 1997-07-29 | Denso Corp | Solenoid valve |
| JP2006071003A (en) * | 2004-09-02 | 2006-03-16 | Nok Corp | Solenoid valve |
| CN106838429A (en) * | 2015-12-03 | 2017-06-13 | 本田技研工业株式会社 | Magnetic valve |
| CN107489785A (en) * | 2017-07-19 | 2017-12-19 | 浙江大学 | A kind of detachable ball-valve structure |
| CN208535252U (en) * | 2018-04-25 | 2019-02-22 | 绵阳富临精工机械股份有限公司 | Low leakage flow proportional control valve and oil pump solenoid valve with the control valve |
-
2018
- 2018-04-25 CN CN201810376991.1A patent/CN108374917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462476U (en) * | 1990-09-29 | 1992-05-28 | ||
| JPH09196218A (en) * | 1996-01-17 | 1997-07-29 | Denso Corp | Solenoid valve |
| JP2006071003A (en) * | 2004-09-02 | 2006-03-16 | Nok Corp | Solenoid valve |
| CN106838429A (en) * | 2015-12-03 | 2017-06-13 | 本田技研工业株式会社 | Magnetic valve |
| CN107489785A (en) * | 2017-07-19 | 2017-12-19 | 浙江大学 | A kind of detachable ball-valve structure |
| CN208535252U (en) * | 2018-04-25 | 2019-02-22 | 绵阳富临精工机械股份有限公司 | Low leakage flow proportional control valve and oil pump solenoid valve with the control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108374917A (en) | 2018-08-07 |
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