CN103846402A - Hydraulic system for relief circuit of centrifugal casting machine - Google Patents
Hydraulic system for relief circuit of centrifugal casting machine Download PDFInfo
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- CN103846402A CN103846402A CN201210509912.2A CN201210509912A CN103846402A CN 103846402 A CN103846402 A CN 103846402A CN 201210509912 A CN201210509912 A CN 201210509912A CN 103846402 A CN103846402 A CN 103846402A
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Abstract
The invention relates to a hydraulic system for a relief circuit of a centrifugal casting machine. The hydraulic system comprises hydraulic pumps, a two-position two-way electromagnetic reversing valve and a one-way valve, wherein the hydraulic pumps are dosing hydraulic pumps; the two-position two-way electromagnetic reversing valve is connected in series with the one-way valve; the second dosing hydraulic pump is connected between the two-position two-way electromagnetic reversing pump and the one-way valve; the one-way valve is connected in series with an electromagnetic overflow valve; the first dosing hydraulic pump is connected between the one-way valve and the electromagnetic overflow valve; the electromagnetic overflow valve is formed by connecting a pilot-operated overflow valve in series with the two-position two-way electromagnetic reversing valve. The hydraulic system is simple in structure and low in energy consumption and heat.
Description
Technical field
The present invention relates to hydraulic technique field, relate in particular to the hydraulic system that is applied to relief circuit in centrifugal casting machine.
Background technology
Force pipe centrifugal casting machine is made up of eight major parts such as machine driven system, Hydraulic Power Transmission System, PC control system, spray equipment, apparatus for pouring, cooling device, tube drawing mechanism and nozzle mechanisms.Except the running of casting mold adopts roller frictional drive, the spray of this machine is drawn advancing of dolly and casting bogie and is retreated, the tensioning of tube drawing pliers with unclamp, the transposition of spray gun and tube drawing pliers, going to work of fan-shaped casting ladle and pipe connector completes by hydraulic drive with the action such as reset.In order to ensure the productivity ratio of machine and the quality of institute's cast tube, when tube drawing pliers stretches into the interior tube drawing of casting mold, there is enough large withdrawing pattern power and prevent that tube drawing pliers from skidding, a pincers loop has pressurize and decompression; System energy consumption is low, and the efficiency of hydraulic circuit is high.
Summary of the invention
The present invention is directed to above-mentioned shortcoming of the prior art, a kind of centrifugal casting machine relief circuit hydraulic system is provided, it is simple in structure, and energy consumption is low, and heating is few.
The technical solution adopted in the present invention is as follows:
Centrifugal casting machine relief circuit hydraulic system, comprises hydraulic pump, bi-bit bi-pass solenoid directional control valve and check valve, and described hydraulic pump is quantitative hydraulic pump and quantitative hydraulic pump; Bi-bit bi-pass solenoid directional control valve is connected with a check valve, and quantitative hydraulic pump is connected between bi-bit bi-pass solenoid directional control valve and a check valve; Check valve is connected with electromagnetic relief valve, between check valve and electromagnetic relief valve, is connected with quantitative hydraulic pump; Electromagnetic relief valve is composed in series by a pilot operated compound relief valve and a bi-bit bi-pass solenoid directional control valve.
The invention has the advantages that: in the time that actuator moves, two bi-bit bi-pass solenoid directional control valves in system switch to respectively right position and the next, system pressure is set up by the pilot operated compound relief valve in electromagnetic relief valve, in the time that actuator needs short time stop motion, two bi-bit bi-pass solenoid directional control valves are resetted, two quantitative hydraulic pump off-loads, have reduced energy consumption and system heating, have extended the life-span of hydraulic pump and drive motors.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, the present invention includes and comprise that hydraulic pump, bi-bit bi-pass solenoid directional control valve 3 and check valve 5, described hydraulic pump are quantitative hydraulic pump 1 and quantitative hydraulic pump 2; Bi-bit bi-pass solenoid directional control valve 3 is connected with a check valve 5, and quantitative hydraulic pump 2 is connected between bi-bit bi-pass solenoid directional control valve 3 and a check valve 5; Check valve 5 is connected with electromagnetic relief valve 4, between check valve 5 and electromagnetic relief valve 4, is connected with quantitative hydraulic pump 1; Electromagnetic relief valve 4 is composed in series by a pilot operated compound relief valve and a bi-bit bi-pass solenoid directional control valve 3.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention, referring to claim, within protection scope of the present invention, can be done any type of modification.
Claims (1)
1. centrifugal casting machine relief circuit hydraulic system, comprise hydraulic pump, bi-bit bi-pass solenoid directional control valve (3) and check valve (5), it is characterized in that: described hydraulic pump is quantitative hydraulic pump (1) and quantitative hydraulic pump (2); Bi-bit bi-pass solenoid directional control valve (3) is connected with a check valve (5), and quantitative hydraulic pump (2) is connected between bi-bit bi-pass solenoid directional control valve (3) and a check valve (5); Check valve (5) is connected with electromagnetic relief valve (4), between check valve (5) and electromagnetic relief valve (4), is connected with quantitative hydraulic pump (1); Electromagnetic relief valve (4) is composed in series by a pilot operated compound relief valve and a bi-bit bi-pass solenoid directional control valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509912.2A CN103846402A (en) | 2012-11-30 | 2012-11-30 | Hydraulic system for relief circuit of centrifugal casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509912.2A CN103846402A (en) | 2012-11-30 | 2012-11-30 | Hydraulic system for relief circuit of centrifugal casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103846402A true CN103846402A (en) | 2014-06-11 |
Family
ID=50854787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509912.2A Pending CN103846402A (en) | 2012-11-30 | 2012-11-30 | Hydraulic system for relief circuit of centrifugal casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103846402A (en) |
-
2012
- 2012-11-30 CN CN201210509912.2A patent/CN103846402A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |