CN110953361B - Rotary flow control valve - Google Patents
Rotary flow control valve Download PDFInfo
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- CN110953361B CN110953361B CN201911371998.5A CN201911371998A CN110953361B CN 110953361 B CN110953361 B CN 110953361B CN 201911371998 A CN201911371998 A CN 201911371998A CN 110953361 B CN110953361 B CN 110953361B
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- valve
- valve core
- oil
- fuel
- sleeve
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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
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide 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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a rotary flow control valve, which belongs to the technical field of internal combustion engines and comprises a valve core, a valve sleeve and a rotary driving unit, wherein the valve core is fixedly connected with a driving rod on the rotary driving unit, the valve core is positioned in an inner hole of the valve sleeve, and a columnar annular area is formed between the valve sleeve and the driving rod; the valve sleeve is provided with a metering hole, the valve core is provided with an oil inlet groove, the valve core rotates relative to the valve sleeve under the drive of the rotary type driving unit, the stop position of the valve core is controllable, and the fuel oil inlet amount of the fuel oil high-pressure pump is controlled by the size of the communication area between the metering hole on the regulating valve sleeve and the oil inlet groove on the valve core. The rotary flow control valve has the advantages of small volume, compact structure, small control stroke, small oil supply delay time, high fuel oil quantity control precision and the like, particularly the control precision of small oil quantity; in addition, the problems of large valve core stroke, large inertia, inaccurate control and the like under the large-flow working condition of the large-flow high-pressure pump are solved.
Description
Technical Field
The invention belongs to the technical field of internal combustion engines, and particularly relates to a rotary flow control valve.
Background
The common proportional valve in the prior art is an oil quantity control proportional valve with an electromagnetic control type and a valve core moving axially. When the proportional valve works, the valve core reciprocates along the axial direction. The electromagnet end of the valve core is not directly connected with the low-pressure oil cavity, so that the fuel pressure fluctuation is small, but certain pressure fluctuation exists due to fuel input of the proportional valve, so that the two ends of the valve core are unbalanced in stress, the valve core is difficult to control the displacement of the valve core stably in the working process of the valve core, and the fuel oil quantity adjusted by the proportional valve is unstable, particularly under the working condition of small oil quantity. In addition, when the proportional valve is used for adjusting the large-flow fuel delivery rate, the volumes of the valve core, the electromagnet and the armature are greatly increased, the displacement of the valve core is large, the processing difficulty is increased, and the structure is not compact; on the other hand, the control stroke of the control valve core is large, the electromagnetic force is increased, the reaction time is prolonged, the inertia force is increased, the valve core motion control precision is poor, and the oil supply stability is poor.
In addition, the traditional proportional valve with the axially moving valve core has the advantages that the valve core jumps, the armature is easy to impact, and the imbalance of the pressures at two ends of the valve core is increased, so that the instability of oil control is aggravated.
Disclosure of Invention
The invention provides a rotary flow control valve, which realizes the purpose of stably controlling the low-pressure fuel quantity of a high-pressure pump of a fuel supply system, and is particularly suitable for controlling the low-pressure fuel inlet quantity under the working condition of large flow; the valve core of the control valve does rotary motion, and in the working process of the control valve, the valve core is uniformly stressed in the circumferential direction and is not influenced by hydraulic pressure fluctuation, the structure is simple and compact, the position of the valve core is easy to control, and the stable regulation of the fuel quantity is realized. Meanwhile, the valve core has small control stroke, the moving part has small inertia force, the oil supply delay time meets the requirement, the pressure fluctuation is stable, the control precision is high, and the fuel quantity control requirement under the working condition of large flow is met.
The invention is realized by the following technical scheme:
a rotary flow control valve comprises a valve core 1, a valve sleeve 2 and a rotary driving unit 8, wherein the valve core 1 is fixedly connected with a driving rod 6 on the rotary driving unit 8, the valve core 1 is positioned in a valve sleeve inner hole 15 of the valve sleeve 2, and a columnar annular area 10 is formed between the valve sleeve 2 and the driving rod 6; the fuel oil inlet quantity control valve is characterized in that a metering hole 4 is formed in the valve sleeve 2, an oil inlet groove 5 is formed in the valve core 1, the valve core 1 rotates relative to the valve sleeve 2 under the driving of a rotary driving unit 8, the stop position of the valve core 1 is controllable, and the fuel oil inlet quantity of the fuel oil high-pressure pump is controlled by adjusting the communication area between the metering hole 4 in the valve sleeve 2 and the oil inlet groove 5 in the valve core 1.
Further, a flange is arranged at the bottom end of the valve housing 2, a mounting hole 11 is arranged on the flange, and the valve housing is fastened on the valve body 3 through the mounting hole 11 by a fastening device.
Further, the outer ring of the valve housing 2 is assembled with the inner hole of the valve body 3.
Further, a sealing device 12 is arranged between the outer ring of the valve sleeve 2 and the inner hole of the valve body 3 to separate the oil inlet end and the oil outlet end of the oil quantity control valve.
Further, the number of the metering holes 4 is greater than or equal to two, and the metering holes are triangular, circular or oval.
Further, a valve housing annulus 14 communicating with the metering holes 4 is provided on the outer ring of the valve housing 2 to communicate the metering holes 4.
Further, the oil inlet grooves 5 are uniformly distributed in the circumferential direction of the valve core 1, the number of the oil inlet grooves is greater than or equal to two, and the cross section of each oil inlet groove 5 is rectangular or trapezoidal.
Furthermore, a first fuel oil hole 7 and a second fuel oil hole 13 are arranged on the valve body 3, and the first fuel oil hole 7 is communicated with the oil inlet groove 5 of the valve core 1; the second fuel hole 13 is arranged at the valve sleeve ring belt 14 and communicated with the metering hole 4; the two fuel oil holes are respectively connected with an oil inlet circuit or an oil outlet circuit of the rotary flow control valve.
The working principle of the rotary flow control valve is as follows:
the fuel circulation mode is optional, and the circulation mode is one: the first fuel oil hole 7 is connected with a low-pressure fuel delivery pump, fuel oil enters the oil inlet tank 5 through the fuel oil channel 9, and the fuel oil is regulated by the control valve and then flows out of the valve core metering hole 4. Specifically, input fuel from a low-pressure fuel delivery pump firstly enters a columnar annular area 10 formed by an inner hole of a valve sleeve and a driving rod and then enters an oil inlet groove 5 of a valve core, and the columnar annular space and a space communicated with the columnar annular space have a pressure accumulation effect on the input fuel, so that the pressure stability of the input fuel at the front end of the rotary flow control valve is ensured. A second circulation mode: the second fuel hole 13 is connected with a low-pressure fuel delivery pump, fuel uniformly enters the metering hole 4 through the valve sleeve annulus 14, and the fuel regulated by the proportional valve flows through the annular area 10 and then flows out of the first fuel hole 7. The two fuel circulation modes have the advantages that under the condition that the fuel inlet grooves of the valve core are uniformly distributed, in the whole working process of the control valve, the pressure generated by the fuel in the fuel inlet grooves to the valve core is balanced, and even if certain pressure fluctuation exists in the input fuel, the rotary motion of the valve core is not influenced. The problem of unstable operation of the control valve caused by the pressure fluctuation of the input fuel is avoided.
Compared with the prior art, the invention has the following advantages:
the rotary flow control valve has the advantages of small volume, compact structure, small control stroke, small oil supply delay time, high fuel oil quantity control precision and the like, particularly the control precision of small oil quantity; in addition, the problems of large valve core stroke, large inertia, inaccurate control and the like under the large-flow working condition of the large-flow high-pressure pump are solved.
Drawings
FIG. 1 is a schematic view of a rotary flow control valve of the present invention;
FIG. 2 is a schematic view of the metering orifice of a rotary flow control valve of the present invention;
a is round, b is triangular, and c is oval;
FIG. 3 is a schematic cross-sectional view of an oil feed groove of a rotary flow control valve according to the present invention;
a is a structural schematic diagram, b is a rectangle with a section, and c is a trapezoid with a section;
in the figure: the valve core 1, the valve sleeve 2, the valve body 3, the metering hole 4, the oil inlet groove 5, the driving rod 6, the first fuel oil hole 7, the rotary driving unit 8, the fuel oil channel 9, the annular area 10, the mounting hole 11, the sealing device 12, the second fuel oil hole 13, the valve sleeve annulus 14 and the valve sleeve inner hole 15.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example 1
As shown in fig. 1, a rotary flow control valve includes a valve core 1, a valve sleeve 2, and a rotary driving unit 8; wherein, the middle hole of the valve core 1 is connected with the excircle of the driving rod 6 on the rotary driving unit through interference fit. The valve sleeve 2 and the valve core 1 are paired to form a matching part, a certain matching clearance exists in the matching part, and the selection range of the matching clearance is 0.003-0.05 mm. The valve core 1 can rotate smoothly in the valve sleeve inner hole 15. Meanwhile, the leakage amount of fuel oil is controlled by setting the size of the fit clearance, and the leaked fuel oil returns to the oil inlet side of the control valve through the connecting oil way. The valve sleeve 2 is fastened on the valve body 3 through a mounting hole 11 on the valve sleeve 2 by a screw, and an oil inlet end and an oil outlet end of the oil quantity control valve are separated by a sealing ring 12.
Two metering orifices 4 are provided in the valve housing 2, the metering orifices 4 being triangular in shape (as shown in figure 2). The valve core 1 is provided with two oil inlet grooves which are distributed at 180 degrees by taking the valve core 1 as a central shaft. The cross section of the oil inlet groove is rectangular (as shown in figure 3).
The first fuel flow mode is that low-pressure fuel is input from a first fuel hole 7 on the valve body 3, the low-pressure fuel enters a fuel channel 9, a columnar annular space 10 is formed by an inner hole of the valve sleeve 2 and the driving rod 6, then the low-pressure fuel enters the valve core oil inlet groove 5, and the fuel regulated by the control valve is discharged from the metering hole 4. And finally output through the second fuel port 13. The input fuel pressure is designed according to the requirements of a fuel supply system, and is generally 5-15 bar.
A second circulation mode: the second fuel hole 13 is connected with a low-pressure fuel delivery pump, fuel uniformly enters the metering hole 4 through a valve sleeve ring belt 14, and fuel regulated by the proportional valve flows through the annular area 10 and the fuel channel 9 and then flows out of the first fuel hole 7.
The driving rod 6 of the rotary driving unit is driven by the internal unit to rotate, and the rotating speed and the position of the driving rod are adjusted by inputting different electric signals. When the valve core 1 rotates to the position where the oil inlet groove 5 and the metering hole 4 are not overlapped, namely the oil inlet groove 5 is not communicated with the metering hole 4, the control valve is closed; when the valve core 1 rotates to the position where the oil inlet groove 5 and the metering hole 4 are overlapped in small area, the control valve provides a small amount of fuel oil for the fuel oil high-pressure pump; when the fuel high-pressure pump has the maximum fuel supply, the valve core 1 rotates to the position where the fuel inlet groove 5 and the metering hole 4 are completely overlapped, and the opening degree of the control valve reaches the maximum.
According to the two fuel oil circulation modes, under the condition that the oil inlet grooves of the valve core are uniformly distributed, in the whole working process of the control valve, the pressure of the fuel oil in the oil inlet grooves on the valve core is balanced, and even if certain pressure fluctuation exists in the input fuel oil, the rotary motion of the valve core is not influenced. The problem of unstable operation of the control valve caused by the pressure fluctuation of the input fuel is avoided.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, any combination of the various embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (6)
1. The rotary flow control valve is characterized by comprising a valve core (1), a valve sleeve (2) and a rotary driving unit (8), wherein the valve core (1) is fixedly connected with a driving rod (6) on the rotary driving unit (8), the valve core (1) is positioned in a valve sleeve inner hole (15) of the valve sleeve (2), and a columnar annular area (10) is formed between the valve sleeve (2) and the driving rod (6); the high-pressure fuel pump is characterized in that a metering hole (4) is formed in the valve sleeve (2), an oil inlet groove (5) is formed in the valve core (1), the valve core (1) rotates relative to the valve sleeve (2) under the driving of a rotary driving unit (8), the stop position of the valve core (1) is controllable, and the fuel oil inlet amount of the high-pressure fuel pump is controlled by adjusting the communication area between the metering hole (4) in the valve sleeve (2) and the oil inlet groove (5) in the valve core (1);
the valve body (3) is provided with a first fuel hole (7) and a second fuel hole (13), and the first fuel hole (7) is communicated with the oil inlet groove (5) of the valve core (1); the second fuel hole (13) is arranged at the valve sleeve ring belt (14) and is communicated with the metering hole (4); the two fuel oil holes are respectively connected with an oil inlet oil way or an oil outlet oil way of the rotary flow control valve;
and a valve sleeve ring belt (14) communicated with the metering holes (4) is arranged on the outer ring of the valve sleeve (2) and is used for communicating the metering holes (4).
2. A rotary flow control valve according to claim 1, characterized in that the bottom end of the valve housing (2) is provided with a flange, which is provided with mounting holes (11), and that the valve housing is fastened to the valve body (3) by fastening means through the mounting holes (11).
3. A rotary flow control valve according to claim 1, characterised in that the outer ring of the valve housing (2) is fitted with the inner bore of the valve body (3).
4. A rotary flow control valve according to claim 1, characterized in that a sealing means (12) is provided between the outer ring of the valve housing (2) and the inner bore of the valve body (3) to separate the oil inlet end and the oil outlet end of the oil control valve.
5. A rotary flow control valve according to claim 1, wherein the number of metering orifices (4) is greater than or equal to two and is triangular, circular or elliptical in shape.
6. A rotary flow control valve according to claim 1, wherein the oil feed grooves (5) are uniformly distributed in the circumferential direction of the valve core (1) in a number of two or more, and the cross-sectional shape of the oil feed grooves (5) is rectangular or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911371998.5A CN110953361B (en) | 2019-12-27 | 2019-12-27 | Rotary flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911371998.5A CN110953361B (en) | 2019-12-27 | 2019-12-27 | Rotary flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110953361A CN110953361A (en) | 2020-04-03 |
| CN110953361B true CN110953361B (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911371998.5A Active CN110953361B (en) | 2019-12-27 | 2019-12-27 | Rotary flow control valve |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102415U (en) * | 1991-08-15 | 1992-04-22 | 承德石油机械厂 | Throttle valve |
| CN2336157Y (en) * | 1997-09-20 | 1999-09-01 | 新疆农业大学 | Hydraulic shunt valve |
| CN2535626Y (en) * | 2002-03-28 | 2003-02-12 | 田啟聪 | Plunger-stopping throttle valve |
| DE102005031962A1 (en) * | 2005-07-08 | 2007-01-25 | Wilo Ag | Multiple-way valve for a heating system comprises a hollow molded insert which rotates in a valve housing with a sliding unit sliding in the insert |
| JP2012149751A (en) * | 2011-01-21 | 2012-08-09 | Panasonic Corp | Valve device |
| CN103453167A (en) * | 2013-08-30 | 2013-12-18 | 广州柴油机厂股份有限公司 | Quantitative control valve of fuel gas entering cylinder on gas engine |
| CN104775798A (en) * | 2015-04-10 | 2015-07-15 | 东北石油大学 | Whole-well quantitative water injection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025235A (en) * | 2006-02-24 | 2007-08-29 | 罗伯特·博世有限公司 | Directional or flow control valve |
| 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 |
-
2019
- 2019-12-27 CN CN201911371998.5A patent/CN110953361B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102415U (en) * | 1991-08-15 | 1992-04-22 | 承德石油机械厂 | Throttle valve |
| CN2336157Y (en) * | 1997-09-20 | 1999-09-01 | 新疆农业大学 | Hydraulic shunt valve |
| CN2535626Y (en) * | 2002-03-28 | 2003-02-12 | 田啟聪 | Plunger-stopping throttle valve |
| DE102005031962A1 (en) * | 2005-07-08 | 2007-01-25 | Wilo Ag | Multiple-way valve for a heating system comprises a hollow molded insert which rotates in a valve housing with a sliding unit sliding in the insert |
| JP2012149751A (en) * | 2011-01-21 | 2012-08-09 | Panasonic Corp | Valve device |
| CN103453167A (en) * | 2013-08-30 | 2013-12-18 | 广州柴油机厂股份有限公司 | Quantitative control valve of fuel gas entering cylinder on gas engine |
| CN104775798A (en) * | 2015-04-10 | 2015-07-15 | 东北石油大学 | Whole-well quantitative water injection device |
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| CN110953361A (en) | 2020-04-03 |
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