CN104948815A - Volume throttling governing valve - Google Patents
Volume throttling governing valve Download PDFInfo
- Publication number
- CN104948815A CN104948815A CN201410115895.3A CN201410115895A CN104948815A CN 104948815 A CN104948815 A CN 104948815A CN 201410115895 A CN201410115895 A CN 201410115895A CN 104948815 A CN104948815 A CN 104948815A
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic cylinder
- volume
- control valve
- type variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
- F16K31/1245—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated with more than one valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a volume throttling governing valve which comprises a hydraulic cylinder. The volume throttling governing valve is characterized by further comprising a pressure-limiting type variable pump, a governing valve body, a reversing valve and a counterbalance valve, the output end of the pressure-limiting type variable pump is connected with the hydraulic cylinder through the governing valve body, the oil return output end of the hydraulic cylinder is connected with the input end of the counterbalance valve, the output end of the counterbalance valve is connected with an oil tank through a pipeline, and the output end of the pressure-limiting type variable pump is connected with the hydraulic cylinder through the reversing valve. The volume throttling governing valve solves the problems that in the prior art, a volume throttling governing valve is complex in structure, the adjusting efficiency is low, adjustment is not stable enough, the normal use of equipment is influenced, damage is prone to occurring, and the service life is short. The volume throttling governing valve is simple in structure, convenient to use, capable of quickly and stably adjusting flow, longer in service life and higher in safety performance.
Description
Technical field
The present invention relates to a kind of speed governing valve, particularly relate to a kind of volume-restrictive velocity control valve.
Background technique
Current volume-restrictive velocity control valve mechanism is complicated, and regulates efficiency comparison low, and regulate stable not, affect the normal use of equipment, and easily damage, working life is shorter.
Summary of the invention
Complicated in order to solve volume-restrictive velocity control valve mechanism in prior art, and regulate efficiency comparison low, regulate stable not, affect the normal use of equipment, and easily damage, the problem that working life is shorter, the invention provides a kind of structure simple, easy to use, can fast and stable adjust flux, longer service life, the volume-restrictive velocity control valve that Safety performance is higher.
In order to solve the problem, the technical solution adopted in the present invention is:
A kind of volume-restrictive velocity control valve, comprise oil hydraulic cylinder, it is characterized in that: also comprise limit pressure type variable pump, series flow control valve, selector valve and back pressure valve, the output terminal of described limit pressure type variable pump is connected with oil hydraulic cylinder by series flow control valve, described oil hydraulic cylinder oil return output terminal is connected with back pressure valve input end by pipeline, described back pressure valve output terminal is connected with mailbox by pipeline, and the output terminal of described limit pressure type variable pump is connected with oil hydraulic cylinder by selector valve.
Aforesaid a kind of volume-restrictive velocity control valve, is characterized in that: described back pressure valve adopts stainless steel back pressure valve.
Aforesaid a kind of volume-restrictive velocity control valve, is characterized in that: described series flow control valve adopts Hydraulic Adjustable Speed valve.
The invention has the beneficial effects as follows: volume-restrictive velocity control valve of the present invention has that efficiency is high, governing speed is fast, regulate more stable, structure is simple, and working life, bench was limited, be extensively applied at present load variations little in, in the hydraulic system of small-power modular machine tool.And back pressure valve of the present invention realizes action by the elastic force of built-in spring: when system pressure is less than setting pressure, the good valve diaphragm of work blocking pipeline under the effect of spring force; When system pressure is larger than setting pressure, diaphragm Compress Spring, pipeline is connected, and liquid is by back pressure valve, and using effect is better.
Accompanying drawing explanation
Fig. 1 is volume-restrictive velocity control valve mechanism schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, a kind of volume-restrictive velocity control valve, comprise oil hydraulic cylinder 4, limit pressure type variable pump 1, series flow control valve 2, selector valve 3 and back pressure valve 5, the output terminal of described limit pressure type variable pump 1 is connected with oil hydraulic cylinder 4 by series flow control valve 2, described oil hydraulic cylinder 4 oil return output terminal is connected with back pressure valve 5 input end by pipeline, described back pressure valve 5 output terminal is connected with mailbox by pipeline, and the output terminal of described limit pressure type variable pump 1 is connected with oil hydraulic cylinder 4 by selector valve 3.Described back pressure valve 5 adopts stainless steel back pressure valve.Described series flow control valve 2 adopts Hydraulic Adjustable Speed valve.
Volume-restrictive velocity control valve oil hydraulic cylinder 4 piston of the present invention moves right fast, limit pressure type variable pump 1 regulates its output flow qmax by rapid movement requirement, regulate the tension adjusting screw of limit pressure type variable pump 1 simultaneously, make the restriction pressure p P of limit pressure type variable pump 1, be greater than pressure needed for rapid movement.When selector valve 3 is energized, the pressure oil that pump exports enters oil hydraulic cylinder 4 through series flow control valve 2, and its oil return is through back pressure valve 5 oil sump tank.Regulate the movement velocity v of flow q1 with regard to adjusting piston of series flow control valve 2, due to q1< qB, pressure oil forces the oil pressure between the outlet of limit pressure type variable pump 1 and series flow control valve 2 import to raise, namely the charge oil pressure of limit pressure type variable pump 1 raises, till the flow of pump is just reduced to qB ≈ q1 automatically.
In sum, volume-restrictive velocity control valve of the present invention has that efficiency is high, governing speed is fast, regulates more stable, and simply, working life, bench was limited for structure, be extensively applied at present load variations little in, in the hydraulic system of small-power modular machine tool.And back pressure valve 5 of the present invention realizes action by the elastic force of built-in spring: when system pressure is less than setting pressure, the good valve diaphragm of work blocking pipeline under the effect of spring force; When system pressure is larger than setting pressure, diaphragm Compress Spring, pipeline is connected, and liquid is by back pressure valve, and using effect is better.
More than show and describe basic principle of the present invention, major character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a volume-restrictive velocity control valve, comprise oil hydraulic cylinder, it is characterized in that: also comprise limit pressure type variable pump, series flow control valve, selector valve and back pressure valve, the output terminal of described limit pressure type variable pump is connected with oil hydraulic cylinder by series flow control valve, described oil hydraulic cylinder oil return output terminal is connected with back pressure valve input end by pipeline, described back pressure valve output terminal is connected with mailbox by pipeline, and the output terminal of described limit pressure type variable pump is connected with oil hydraulic cylinder by selector valve.
2. a kind of volume-restrictive velocity control valve according to claim 1, is characterized in that: described back pressure valve adopts stainless steel back pressure valve.
3. a kind of volume-restrictive velocity control valve according to claim 2, is characterized in that: described series flow control valve adopts Hydraulic Adjustable Speed valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115895.3A CN104948815A (en) | 2014-03-26 | 2014-03-26 | Volume throttling governing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115895.3A CN104948815A (en) | 2014-03-26 | 2014-03-26 | Volume throttling governing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104948815A true CN104948815A (en) | 2015-09-30 |
Family
ID=54163720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410115895.3A Pending CN104948815A (en) | 2014-03-26 | 2014-03-26 | Volume throttling governing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370651A (en) * | 2015-11-26 | 2016-03-02 | 南通爱慕希机械股份有限公司 | High-pressure oil circuit manifold block |
-
2014
- 2014-03-26 CN CN201410115895.3A patent/CN104948815A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370651A (en) * | 2015-11-26 | 2016-03-02 | 南通爱慕希机械股份有限公司 | High-pressure oil circuit manifold block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |