CN110332167B - High-precision flow dividing and collecting valve - Google Patents
High-precision flow dividing and collecting valve Download PDFInfo
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- CN110332167B CN110332167B CN201910617506.XA CN201910617506A CN110332167B CN 110332167 B CN110332167 B CN 110332167B CN 201910617506 A CN201910617506 A CN 201910617506A CN 110332167 B CN110332167 B CN 110332167B
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- 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
- F15B13/022—Flow-dividers; Priority valves
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- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a high-precision flow dividing and collecting valve which comprises a valve body, a flow collecting valve end cover, a flow dividing valve end cover, a valve hole, a valve core and a valve core hole, wherein a first variable throttling hole A and a first variable throttling hole B are processed on the valve core, and a second variable throttling hole A and a second variable throttling hole B are processed on the valve core; a first reversing piston and a second reversing piston are slidably mounted in the valve core hole; four first radial through holes are machined in the first reversing piston, a first blind groove is machined in the first reversing piston along the axial lead direction of the first reversing piston, and a first fixed throttling hole is machined in the end face of the first blind groove along the axial direction of the first blind groove; four second radial through holes are machined in the second reversing piston, a second blind groove is machined in the second reversing piston along the axial lead direction of the second reversing piston, and a second fixed throttle hole is machined in the end face of the second blind groove along the axial direction of the second blind groove. The invention can correct the synchronous error of the position, thereby improving the synchronous precision of the flow distributing and collecting valve.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a high-precision flow dividing and collecting valve.
Background
The flow distributing and collecting valve is also called speed synchronous valve and is the general name of flow distributing valve, flow collecting valve, one-way flow distributing valve, one-way flow collecting valve and proportional flow distributing valve in hydraulic valve. The synchronous valve is mainly applied to a double-cylinder and multi-cylinder synchronous control hydraulic system. The synchronous movement is usually realized by a plurality of methods, but the synchronous control hydraulic system adopting the flow dividing and collecting valve and the synchronous valve has the advantages of simple structure, low cost, easy manufacture, strong reliability and the like, so the synchronous valve is widely applied to the hydraulic system. The synchronization of the flow distributing and collecting valve is speed synchronization, and when two oil cylinders or a plurality of oil cylinders respectively bear different loads, the flow distributing and collecting valve can still ensure the synchronous movement of the flow distributing and collecting valve. The flow dividing valve is used for supplying the same flow to more than two actuators from the same oil source in a hydraulic system or supplying the flow to the two actuators according to a certain proportion so as to realize the speed synchronization or the fixed ratio relationship of the two actuators. The collecting valve is used for collecting equal flow or proportional oil return quantity from the two actuators so as to realize the speed synchronization or proportional relation of the two actuators. The flow distributing and collecting valve has the functions of both flow distributing valve and flow collecting valve.
Even under the steady-state working condition, the flow dividing and collecting cartridge valve in the prior art can cause the difference of two paths of flow due to the manufacturing error of the fixed throttling hole, the existence of the asymmetry of the hydraulic force, the spring force, the leakage flow and the like at two sides when the load pressure is different, so that the synchronization error is generated, and the precision of the flow dividing and collecting cartridge valve is reduced.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a high-precision flow dividing and collecting valve.
The invention realizes the purpose through the following technical scheme:
a high-precision flow dividing and collecting valve comprises a valve body, a flow collecting valve end cover arranged on the left side of the valve body and a flow dividing valve end cover arranged on the right side of the valve body, wherein a valve hole is processed inside the valve body, a valve core is slidably arranged in the valve hole, a valve core hole is processed in the valve core along the axial lead direction of the valve core, a first variable orifice A and a first variable orifice B are processed on the valve core, the first variable orifice A and the first variable orifice B are communicated with the inside of the valve core hole, a second variable orifice A and a second variable orifice B are processed on the valve core, and the second variable orifice A and the second variable orifice B are communicated with the inside of the valve core hole; a first reversing piston and a second reversing piston are slidably mounted in the valve core hole; four first radial through holes are machined in the first reversing piston, a first blind groove is machined in the first reversing piston along the axial lead direction of the first reversing piston, and a first fixed throttle hole is machined in the end face of the first blind groove along the axial direction of the first blind groove; four second radial through holes are machined in the second reversing piston, a second blind groove is machined in the second reversing piston along the axial lead direction of the second reversing piston, and a second fixed throttle hole is machined in the end face of the second blind groove along the axial direction of the second blind groove.
In order to further improve the use function of the high-precision flow dividing and collecting valve, a first baffle is clamped in the valve core, a first plug is installed in the valve core hole, a first spring groove A is processed in the first baffle, a first spring groove B is processed in the first plug, and a first compression spring is installed in the first spring groove A and the first spring groove B.
In order to further improve the use function of the high-precision flow distributing and collecting valve, the first plug is connected with the end cover of the flow collecting valve through threads, a first elastic cushion is installed on the end face of the first plug, and the first elastic cushion is installed on the end face of the first plug through a plurality of first silencing screws.
In order to further improve the use function of the high-precision flow dividing and collecting valve, a second baffle is clamped in the valve core, a second plug is installed in the valve core hole, a second spring groove A is processed in the second baffle, a second spring groove B is processed in the second plug, and a second compression spring is installed in the second spring groove A and the second spring groove B.
In order to further improve the use function of the high-precision flow dividing and collecting valve, the second plug is connected with the end cover of the flow dividing valve through threads, a second elastic cushion is installed on the end face of the second plug, and the second elastic cushion is installed on the end face of the second plug through a plurality of second silencing screws.
In order to further improve the service function of high-precision flow distributing and collecting valve, install first locating flange through the screw thread in the collecting valve end cover install the second locating flange through the screw thread in the flow distributing valve end cover, just first locating flange with seal through the sealing washer between the collecting valve end cover, the second locating flange with seal through the sealing washer between the flow distributing valve end cover.
In order to further improve the use function of the high-precision flow dividing and collecting valve, a plurality of oil ports are machined on the outer surface of the valve body.
In order to further improve the service function of high-precision flow dividing and collecting valve, the flow collecting valve end cover is installed through a plurality of fastening screws the left side of valve body, the flow dividing valve end cover is installed through a plurality of fastening screws the right side of valve body processing has first seal groove on the internal face of flow dividing valve end cover processing has the second seal groove on the internal face of flow dividing valve end cover.
In order to further improve the service function of high-precision flow dividing and collecting valve, install first sealing washer in the first seal groove, first sealing washer is used for sealing collecting valve end cover and valve body install the second sealing washer in the second seal groove, the second sealing washer is used for sealing flow dividing valve end cover and valve body.
In order to further improve the use function of the high-precision flow dividing and collecting valve, the first reversing piston and the second reversing piston are identical in structure, and the first fixed throttling hole and the second fixed throttling hole are communicated with each other.
The working principle is as follows: when the valve is in a shunting working condition, the first reversing piston and the second reversing piston on two sides are both positioned at positions away from the center, high-pressure oil enters a valve hole of the valve body from an oil inlet, flows to the first fixed throttling hole and the second fixed throttling hole on two sides in two ways, then respectively passes through the first variable throttling hole A, the first variable throttling hole B, the second variable throttling hole A and the second variable throttling hole B and then flows into the two actuators, if the pressure of the loads of the two actuators is equal, the resistance met by the liquid flow is the same, and if the load pressure on two sides is unequal, the pressure on the left side and the pressure on the right side of the valve core are unequal. If the pressure on the left side is greater than the pressure on the right side, the valve spool moves to the right, and if the pressure on the right side is greater than the pressure on the left side, the valve spool moves to the left. When in a flow collecting working condition, the first reversing piston and the second reversing piston on two sides are close to the central position, liquid flows in from the oil inlet, firstly passes through the first variable orifice A, the first variable orifice B, the second variable orifice A and the second variable orifice B, then flows into the first fixed orifice and the second fixed orifice, and then flows back to the oil tank from the oil return port in a centralized manner. If the pressures of the two actuator loads are equal, the resistance met by the liquid flow is the same, and if the pressures of the two side loads are unequal, the pressures on the left side and the right side of the valve core are unequal. If the pressure on the left side is greater than the pressure on the right side, the valve spool moves to the right, and if the pressure on the right side is greater than the pressure on the left side, the valve spool moves to the left.
The invention has the beneficial effects that: the invention has reasonable structural design, can keep the flow of two paths equal under the steady-state working condition when in use, is suitable for the speed synchronous control of the actuators, has unequal flow of the two paths within the transient process time, and can correct the synchronous error of the positions if the flow control device is used for controlling the position synchronization of the two actuators, thereby improving the synchronous precision of the flow dividing and collecting valve.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a top view of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 and 2, the high-precision flow dividing and collecting valve comprises a valve body 1, a collecting valve end cover 101 mounted on the left side of the valve body 1, and a flow dividing valve end cover 102 mounted on the right side of the valve body 1, wherein a valve hole 105 is formed in the valve body 1, a valve core 2 is slidably mounted in the valve hole 105, a valve core hole 201 is formed in the valve core 2 along the axial line direction of the valve core, a first variable orifice a202 and a first variable orifice B203 are formed in the valve core 2, the first variable orifice a202 and the first variable orifice B203 are communicated with the inside of the valve core hole 201, a second variable orifice a204 and a second variable orifice B205 are formed in the valve core 2, and the second variable orifice a204 and the second variable orifice B205 are communicated with the inside of the valve core hole 201; a first reversing piston 3 and a second reversing piston 4 are slidably mounted in the valve core hole 201; four first radial through holes 301 are machined in the first reversing piston 3, a first blind groove 302 is machined in the first reversing piston 3 along the axial lead direction of the first reversing piston, and a first fixed throttle hole 303 is machined in the end face of the first blind groove 302 along the axial direction of the first blind groove; four second radial through-flow holes 401 are formed in the second reversing piston 4, a second blind groove 402 is formed in the second reversing piston 4 along the axial direction of the second reversing piston, and a second fixed throttle hole 403 is formed in the end face of the second blind groove 402 along the axial direction of the second blind groove.
In order to further improve the use function of the high-precision flow dividing and collecting valve, a first baffle 5 is clamped in the valve core 2, a first plug 6 is installed in the valve core hole 201, a first spring groove a is processed in the first baffle 5, a first spring groove B is processed in the first plug 6, and a first compression spring 501 is installed in the first spring groove a and the first spring groove B. The first plug 6 is connected with the collecting valve end cover 101 through threads, a first elastic pad 601 is installed on the end face of the first plug 6, and the first elastic pad 601 is installed on the end face of the first plug 6 through a plurality of first silencing screws 602. A second baffle 7 is clamped in the valve core 2, a second plug 8 is installed in the valve core hole 201, a second spring groove a is processed in the second baffle 7, a second spring groove B is processed in the second plug 8, and a second compression spring 701 is installed in the second spring groove a and the second spring groove B. The second plug 8 is connected with the flow divider end cover 102 through threads, a second elastic pad 801 is installed on the end face of the second plug 8, and the second elastic pad 801 is installed on the end face of the second plug 8 through a plurality of second silencing screws 802. A first positioning flange 9 is installed in the collecting valve end cover 101 through threads, a second positioning flange 10 is installed in the flow dividing valve end cover 102 through threads, the first positioning flange 9 and the collecting valve end cover 101 are sealed through a sealing ring, and the second positioning flange 10 and the flow dividing valve end cover 102 are sealed through a sealing ring. A plurality of oil ports 11 are formed in the outer surface of the valve body 1. Collecting valve end cover 101 is installed through a plurality of fastening screws the left side of valve body 1, flow divider end cover 102 is installed through a plurality of fastening screws the right side of valve body 1 processing has first seal groove 103 on collecting valve end cover 101's the internal wall face processing has second seal groove 104 on flow divider end cover 102's the internal wall face. Install first sealing washer in the first seal groove 103, first sealing washer is used for sealing collecting valve end cover 101 and valve body 1 install the second sealing washer in the second seal groove 104, the second sealing washer is used for sealing flow divider end cover 102 and valve body 1. The first and second reversing pistons 3 and 4 are identical in construction, and the first and second fixed orifices 303 and 403 communicate with each other.
When in a shunting working condition, the first reversing piston 3 and the second reversing piston 4 on two sides are both positioned at positions away from the center, high-pressure oil enters the valve hole 105 of the valve body from the oil inlet, flows to the first fixed throttle hole 303 and the second fixed throttle hole 403 on two sides in two ways, then respectively passes through the first variable throttle hole A202, the first variable throttle hole B203, the second variable throttle hole A204 and the second variable throttle hole B205, and then flows into the two actuators. If the pressure on the left side is greater than the pressure on the right side, the valve element 2 moves to the right, whereas if the pressure on the right side is greater than the pressure on the left side, the valve element 2 moves to the left. In a flow collecting working condition, the first reversing piston 3 and the second reversing piston 4 on two sides are close to the center position, liquid flows in from the oil inlet, firstly passes through the first variable orifice A202, the first variable orifice B203, the second variable orifice A204 and the second variable orifice B205, then flows into the first fixed orifice 303 and the second fixed orifice 403, and flows back to the oil tank from the oil return port in a centralized mode. If the pressures of the two actuators are equal, the resistance encountered by the fluid flow is the same, and if the pressures of the two side loads are not equal, the pressures experienced by the left side and the right side of the valve core 2 are not equal. If the pressure on the left side is greater than the pressure on the right side, the valve element 2 moves to the right, whereas if the pressure on the right side is greater than the pressure on the left side, the valve element 2 moves to the left. The invention has reasonable structural design, can keep the flow of two paths equal under the steady-state working condition when in use, is suitable for the speed synchronous control of the actuators, has unequal flow of the two paths within the transient process time, and can correct the synchronous error of the positions if the flow control device is used for controlling the position synchronization of the two actuators, thereby improving the synchronous precision of the flow dividing and collecting valve.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (2)
1. The utility model provides a high accuracy flow divider collection valve which characterized in that: comprises a valve body (1), a collecting valve end cover (101) arranged on the left side of the valve body (1), and a flow dividing valve end cover (102) arranged on the right side of the valve body (1), a valve hole (105) is processed in the valve body (1), a valve core (2) is arranged in the valve hole (105) in a sliding way, a valve core hole (201) is processed in the valve core (2) along the axial lead direction, a first variable orifice A (202) and a first variable orifice B (203) are formed in the valve body (2), the first variable orifice A (202) and the first variable orifice B (203) communicate with the inside of the spool hole (201), a second variable orifice A (204) and a second variable orifice B (205) are machined in the valve body (2), the second variable orifice A (204) and the second variable orifice B (205) communicate with the inside of the spool hole (201); a first reversing piston (3) and a second reversing piston (4) are slidably mounted in the valve core hole (201); four first radial through flow holes (301) are machined in the first reversing piston (3), a first blind groove (302) is machined in the first reversing piston (3) along the axial lead direction of the first blind groove, and a first fixed throttle hole (303) is machined in the axial direction of the first blind groove (302); four second radial through flow holes (401) are machined in the second reversing piston (4), a second blind groove (402) is machined in the second reversing piston (4) along the axial line direction of the second blind groove, and a second fixed throttle hole (403) is machined in the end face of the second blind groove (402) along the axial direction of the second blind groove; a first baffle (5) is clamped in the valve core (2), a first plug (6) is installed in the valve core hole (201), a first spring groove A is processed in the first baffle (5), a first spring groove B is processed in the first plug (6), and a first compression spring (501) is installed in the first spring groove A and the first spring groove B; the first plug (6) is connected with the collecting valve end cover (101) through threads, a first elastic pad (601) is installed on the end face of the first plug (6), and the first elastic pad (601) is installed on the end face of the first plug (6) through a plurality of first silencing screws (602); a second baffle (7) is clamped in the valve core (2), a second plug (8) is installed in the valve core hole (201), a second spring groove A is processed in the second baffle (7), a second spring groove B is processed in the second plug (8), and a second compression spring (701) is installed in the second spring groove A and the second spring groove B; the second plug (8) is connected with the shunt valve end cover (102) through threads, a second elastic cushion (801) is installed on the end face of the second plug (8), and the second elastic cushion (801) is installed on the end face of the second plug (8) through a plurality of second silencing screws (802); a first positioning flange (9) is installed in the collecting valve end cover (101) through threads, a second positioning flange (10) is installed in the flow dividing valve end cover (102) through threads, the first positioning flange (9) and the collecting valve end cover (101) are sealed through a sealing ring, and the second positioning flange (10) and the flow dividing valve end cover (102) are sealed through a sealing ring; the collecting valve end cover (101) is mounted on the left side of the valve body (1) through a plurality of fastening screws, the flow dividing valve end cover (102) is mounted on the right side of the valve body (1) through a plurality of fastening screws, a first sealing groove (103) is machined on the inner wall surface of the collecting valve end cover (101), and a second sealing groove (104) is machined on the inner wall surface of the flow dividing valve end cover (102); a first sealing ring is arranged in the first sealing groove (103) and used for sealing the collecting valve end cover (101) and the valve body (1), a second sealing ring is arranged in the second sealing groove (104) and used for sealing the flow dividing valve end cover (102) and the valve body (1); the first reversing piston (3) and the second reversing piston (4) are identical in structure, and the first fixed throttle hole (303) and the second fixed throttle hole (403) are communicated with each other.
2. The high precision flow divider and manifold valve of claim 1, wherein: a plurality of oil ports (11) are machined in the outer surface of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617506.XA CN110332167B (en) | 2019-07-10 | 2019-07-10 | High-precision flow dividing and collecting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617506.XA CN110332167B (en) | 2019-07-10 | 2019-07-10 | High-precision flow dividing and collecting valve |
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| Publication Number | Publication Date |
|---|---|
| CN110332167A CN110332167A (en) | 2019-10-15 |
| CN110332167B true CN110332167B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617506.XA Active CN110332167B (en) | 2019-07-10 | 2019-07-10 | High-precision flow dividing and collecting valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN110332167B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060670B (en) * | 2020-08-13 | 2022-05-24 | 山东森特克液压有限公司 | Flow and pressure control device of hydraulic machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854593A (en) * | 1971-12-24 | 1974-12-17 | S Gross | Overload switch-off device for hydraulic lifting or adjusting mechanisms connected in tandem, in particular for hydraulic loading and unloading cranes |
| US4553908A (en) * | 1980-05-16 | 1985-11-19 | Zahnradfabrik Friedrichshafen, Ag. | High pressure pump with a flow control valve |
| JPH0328501A (en) * | 1989-06-26 | 1991-02-06 | Komatsu Ltd | Hydraulic circuit of working machine cylinder |
| CN2160031Y (en) * | 1993-07-17 | 1994-03-30 | 史广成 | High precision flow divider-combiner |
| CN201326595Y (en) * | 2008-10-02 | 2009-10-14 | 王大伟 | Multi-oil circuit valve housing type flow distributing and collecting valve |
| CN201560991U (en) * | 2009-11-25 | 2010-08-25 | 史广成 | A digital high accuracy flow divider-combiner |
| CN202370929U (en) * | 2011-12-27 | 2012-08-08 | 史广成 | Separate adjustment type high-precision flow distributing and collecting valve |
| CN105387014A (en) * | 2015-12-07 | 2016-03-09 | 浙江华益精密机械股份有限公司 | High-precision flow distributing and collecting valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201507491U (en) * | 2009-08-14 | 2010-06-16 | 史广成 | One-way dividing valve and collecting valve |
-
2019
- 2019-07-10 CN CN201910617506.XA patent/CN110332167B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854593A (en) * | 1971-12-24 | 1974-12-17 | S Gross | Overload switch-off device for hydraulic lifting or adjusting mechanisms connected in tandem, in particular for hydraulic loading and unloading cranes |
| US4553908A (en) * | 1980-05-16 | 1985-11-19 | Zahnradfabrik Friedrichshafen, Ag. | High pressure pump with a flow control valve |
| JPH0328501A (en) * | 1989-06-26 | 1991-02-06 | Komatsu Ltd | Hydraulic circuit of working machine cylinder |
| CN2160031Y (en) * | 1993-07-17 | 1994-03-30 | 史广成 | High precision flow divider-combiner |
| CN201326595Y (en) * | 2008-10-02 | 2009-10-14 | 王大伟 | Multi-oil circuit valve housing type flow distributing and collecting valve |
| CN201560991U (en) * | 2009-11-25 | 2010-08-25 | 史广成 | A digital high accuracy flow divider-combiner |
| CN202370929U (en) * | 2011-12-27 | 2012-08-08 | 史广成 | Separate adjustment type high-precision flow distributing and collecting valve |
| CN105387014A (en) * | 2015-12-07 | 2016-03-09 | 浙江华益精密机械股份有限公司 | High-precision flow distributing and collecting valve |
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| CN110332167A (en) | 2019-10-15 |
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