CN111550459A - Safety protection oil circuit system of servo pump - Google Patents
Safety protection oil circuit system of servo pump Download PDFInfo
- Publication number
- CN111550459A CN111550459A CN202010429392.9A CN202010429392A CN111550459A CN 111550459 A CN111550459 A CN 111550459A CN 202010429392 A CN202010429392 A CN 202010429392A CN 111550459 A CN111550459 A CN 111550459A
- Authority
- CN
- China
- Prior art keywords
- oil
- servo pump
- protection circuit
- safety protection
- valve
- 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
Links
Images
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a safety protection circuit system of a servo pump, which comprises an oil supply circuit, a protection circuit, the servo pump, a motor and an oil tank, wherein the oil supply circuit is connected with the protection circuit; the protection circuit is connected with the oil supply circuit in parallel; the servo pump is connected with the oil supply line; the motor is used for driving the servo pump; the oil tank is connected with the protection circuit. The invention discloses a safety protection circuit system for a servo pump, which is provided with a protection circuit, wherein the protection circuit is connected with an oil supply circuit in parallel, a two-position four-way electromagnetic valve is arranged in the protection circuit, when machine equipment stops running, the two-position four-way electromagnetic valve is reversed, pressure oil in the machine equipment returns to an oil tank through the two-position four-way electromagnetic valve, and the damage to the servo pump caused by the pressure in the machine equipment returning to the servo pump is avoided.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a safety protection oil way system of a servo pump.
Background
With the application of the servo motor driven constant delivery pump technology in the field of high-precision oil presses, the requirement on pump control in the market is higher and higher, and the requirements on large flow, high-precision control, energy conservation and cost reduction are met. The large displacement internal gear pump set is expensive, and once the pump is damaged, the maintenance cost is high.
In the prior art, when a servo pump drives machine equipment through pressure oil, the pressure oil is generally supplied to the machine equipment through an oil supply line, and when the machine equipment stops running, the pressure oil entering the machine equipment also returns to an oil tank through the supply line, so that the servo pump is easily reversed to damage the servo pump.
Disclosure of Invention
In view of the above disadvantages in the prior art, the technical problem to be solved by the present invention is to provide a safety protection oil circuit system for a servo pump, which is used to solve the problem that the servo pump is damaged due to reverse rotation of the servo pump caused by pressure oil returning to the servo pump when the oil circuit system in the prior art returns oil.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a safety protection oil piping system of a servo pump, comprising:
an oil supply line;
protecting the circuit; is connected in parallel with the oil supply line;
a servo pump; the servo pump is connected with the oil supply line;
a motor; the motor is used for driving the servo pump;
an oil tank; is connected with the protection circuit.
Preferably, the oil supply line is provided with a cartridge valve.
Preferably, the protection circuit is provided with a two-position four-way electromagnetic valve, and the two-position four-way electromagnetic valve is connected with the cartridge valve in parallel.
Preferably, the two-position four-way electromagnetic valve comprises an opening A, an opening B, an opening P and an opening T, the opening P is communicated with an oil inlet of the cartridge valve, and the opening T is connected with an oil tank; the port A is communicated with an oil outlet of the cartridge valve.
Preferably, the oil pressure control device further comprises a pressure control valve, wherein the pressure control valve is communicated with the oil outlet of the cartridge valve and is used for controlling the oil pressure of an oil supply line.
Preferably, the oil filter is further included, and the oil filter is connected with the servo pump and the oil tank.
The invention discloses a safety protection circuit system for a servo pump, which is provided with a protection circuit, wherein the protection circuit is connected with an oil supply circuit in parallel, a two-position four-way electromagnetic valve is arranged in the protection circuit, when machine equipment stops running, the two-position four-way electromagnetic valve is reversed, pressure oil in the machine equipment returns to an oil tank through the two-position four-way electromagnetic valve, and the damage to the servo pump caused by the pressure in the machine equipment returning to the servo pump is avoided.
Drawings
Fig. 1 is an oil circuit diagram of a safety protection oil circuit system of a servo pump according to an embodiment.
100, an oil supply line; 110. a cartridge valve; 200. protecting the circuit; 210. a two-position four-way solenoid valve; 300. a servo pump; 400. a motor; 500. an oil tank; 600. a pressure control valve.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, the present invention discloses a safety protection oil circuit system of a servo pump, which includes an oil supply circuit 100, a protection circuit 200, a servo pump 300, a motor 400 and an oil tank 500.
The invention is additionally provided with the protection circuit 200 for returning oil, so that the servo pump 300 is prevented from reversing due to the fact that pressure oil returns to the servo pump 300, the servo pump 300 is protected, and the servo pump 300 is prevented from being damaged.
Specifically, the protection circuit 200 is connected in parallel with the oil supply circuit 100;
the servo pump 300 is connected to the oil supply line 100;
the motor 400 is used for driving the servo pump 300;
the oil tank 500 is connected to the protection circuit 200.
The safety protection circuit 200 system of the servo pump 300 is used for driving machine equipment to operate, and particularly, the servo pump 300 supplies oil to load equipment through an oil supply circuit 100; when the machine stops running, the pressure is relieved through the protection circuit 200, so that pressure oil in the system does not pass through the servo pump 300, and the servo pump 300 is prevented from being damaged due to reverse rotation.
The oil supply line 100 is provided with a cartridge valve 110.
The protection circuit 200 is provided with a two-position four-way solenoid valve 210, and the two-position four-way solenoid valve 210 is connected in parallel with the cartridge valve 110.
When the system drives the mechanical equipment to run, the servo pump 300 is started, pressure oil is supplied to the mechanical equipment through the plug-in valve 110 in the oil supply line 100, and then the mechanical equipment is driven, and at the moment, the two-position four-way electromagnetic valve 210 cannot be filled with the oil; when the machine equipment stops working, the two-position four-way solenoid valve 210 is reversed, at the moment, the pressure in the machine equipment returns to the oil tank 500 through the two-position four-way solenoid valve 210, the cartridge valve 110 is in a closed state, and the pressure oil in the machine equipment is prevented from returning to the servo pump 300 to damage the servo pump 300.
The two-position four-way solenoid valve 210 comprises an opening A, an opening B, an opening P and an opening T, wherein the opening P is communicated with an oil inlet of the cartridge valve 110, and the opening T is connected with the oil tank 500; the port a is communicated with an oil outlet of the cartridge valve 110, when the machine equipment is driven by the system, the servo pump 300 enables pressure to pass through the cartridge valve 110 only and then enter the machine equipment to drive the machine equipment, and when the machine equipment stops running, pressure oil in the machine equipment finally returns to the oil tank 500 through the port a and the port T of the two-way four-way valve.
The hydraulic control system further comprises a pressure control valve 600, wherein the pressure control valve 600 is communicated with the oil outlet of the cartridge valve 110, and the pressure control valve 600 is used for controlling the oil pressure of the oil supply line 100.
In this embodiment, the pressure control valve is a relief valve.
The safety protection circuit 200 system of the servo pump 300 further includes an oil filter for filtering foreign substances in the oil, which connects the servo pump 300 and the oil tank 500.
The invention discloses a safety protection circuit 200 system for a servo pump 300, which is provided with a protection circuit 200, wherein the protection circuit 200 is connected with an oil supply circuit 100 in parallel, a two-position four-way electromagnetic valve 210 is arranged in the protection circuit 200, when machine equipment stops running, the two-position four-way electromagnetic valve 210 is reversed, pressure oil in the machine equipment returns to an oil tank 500 through the two-position four-way electromagnetic valve 210, a cartridge valve 110 is in a closed state, and the servo pump 300 is prevented from being damaged due to the fact that the pressure in the machine equipment returns to the servo pump 300.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. A safety protection oil piping system of a servo pump, comprising:
an oil supply line;
protecting the circuit; is connected in parallel with the oil supply line;
a servo pump; the servo pump is connected with the oil supply line;
a motor; the motor is used for driving the servo pump;
an oil tank; is connected with the protection circuit.
2. The servo pump safety protection circuit system as claimed in claim 1, wherein the oil supply line is provided with a cartridge valve.
3. The safety protection oil circuit system of the servo pump as claimed in claim 2, wherein the protection circuit is provided with a two-position four-way solenoid valve, and the two-position four-way solenoid valve is connected in parallel with the cartridge valve.
4. The safety protection oil circuit system of the servo pump according to claim 3, wherein the two-position four-way solenoid valve comprises an A port, a B port, a P port and a T port, the P port is communicated with the oil inlet of the cartridge valve, and the T port is connected with an oil tank; the port A is communicated with an oil outlet of the cartridge valve.
5. The safety protection oil circuit system of the servo pump as claimed in claim 2, further comprising a pressure control valve, wherein the pressure control valve is communicated with the oil outlet of the cartridge valve, and the pressure control valve is used for controlling the oil pressure of the oil supply line.
6. The safety protection oil circuit system of the servo pump as claimed in claim 1, further comprising an oil filter, wherein the oil filter connects the servo pump and the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010429392.9A CN111550459A (en) | 2020-05-20 | 2020-05-20 | Safety protection oil circuit system of servo pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010429392.9A CN111550459A (en) | 2020-05-20 | 2020-05-20 | Safety protection oil circuit system of servo pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111550459A true CN111550459A (en) | 2020-08-18 |
Family
ID=71997501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010429392.9A Pending CN111550459A (en) | 2020-05-20 | 2020-05-20 | Safety protection oil circuit system of servo pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111550459A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4015782A1 (en) * | 1989-05-25 | 1990-11-29 | Coal Industry Patents Ltd | Monitoring arrangement for abrasion products in liquids - liquid from machine hydraulic system, and cartridge filter, etc. |
| CN203623017U (en) * | 2013-11-04 | 2014-06-04 | 江苏国力锻压机床有限公司 | Hydraulic machine main cylinder upper cavity safety protecting system |
| CN104196771A (en) * | 2014-07-18 | 2014-12-10 | 燕山大学 | Electrical-hydraulic control device of anti-falling constraining device |
| CN204553375U (en) * | 2015-01-30 | 2015-08-12 | 福建群峰机械有限公司 | The main brush elevating system of a kind of sweeping machine |
| CN204642959U (en) * | 2015-04-30 | 2015-09-16 | 常州德海精密轴承有限公司 | Hydraulic automatic tensioning device |
| CN205349888U (en) * | 2016-01-15 | 2016-06-29 | 上海复洁环保科技股份有限公司 | Hydraulic control system of pressure filter |
| CN206320090U (en) * | 2016-11-16 | 2017-07-11 | 长沙黑金刚实业有限公司 | A kind of control device of high-speed hydraulic motor |
| CN206625947U (en) * | 2017-03-30 | 2017-11-10 | 武汉科技大学 | A kind of slush pump of double acting hydraulic cylinder |
| CN110446859A (en) * | 2017-03-29 | 2019-11-12 | 福伊特专利有限公司 | Equipment for adjusting hydraulic machine |
-
2020
- 2020-05-20 CN CN202010429392.9A patent/CN111550459A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4015782A1 (en) * | 1989-05-25 | 1990-11-29 | Coal Industry Patents Ltd | Monitoring arrangement for abrasion products in liquids - liquid from machine hydraulic system, and cartridge filter, etc. |
| CN203623017U (en) * | 2013-11-04 | 2014-06-04 | 江苏国力锻压机床有限公司 | Hydraulic machine main cylinder upper cavity safety protecting system |
| CN104196771A (en) * | 2014-07-18 | 2014-12-10 | 燕山大学 | Electrical-hydraulic control device of anti-falling constraining device |
| CN204553375U (en) * | 2015-01-30 | 2015-08-12 | 福建群峰机械有限公司 | The main brush elevating system of a kind of sweeping machine |
| CN204642959U (en) * | 2015-04-30 | 2015-09-16 | 常州德海精密轴承有限公司 | Hydraulic automatic tensioning device |
| CN205349888U (en) * | 2016-01-15 | 2016-06-29 | 上海复洁环保科技股份有限公司 | Hydraulic control system of pressure filter |
| CN206320090U (en) * | 2016-11-16 | 2017-07-11 | 长沙黑金刚实业有限公司 | A kind of control device of high-speed hydraulic motor |
| CN110446859A (en) * | 2017-03-29 | 2019-11-12 | 福伊特专利有限公司 | Equipment for adjusting hydraulic machine |
| CN206625947U (en) * | 2017-03-30 | 2017-11-10 | 武汉科技大学 | A kind of slush pump of double acting hydraulic cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3048587A1 (en) | A plant for controlling delivery of pressurized fluid in a conduit, and a method of controlling a prime mover | |
| US20150132426A1 (en) | Hydraulic drive circuit with parallel architectured accumulator | |
| CN111664135A (en) | Hydraulic system of gear rack lifting platform | |
| CN110332183A (en) | Forging manipulator clamp Hydraulic slewing system | |
| CN111550459A (en) | Safety protection oil circuit system of servo pump | |
| US20140345268A1 (en) | Travel control system for construction machinery | |
| CN211010091U (en) | Pump station system for controlling hydropower station disc valve | |
| CN210531327U (en) | Clamp rotary hydraulic system of forging manipulator | |
| WO2012113208A1 (en) | Power drive device of concrete pumping equipment and concrete pumping equipment | |
| CN106337848A (en) | Hydraulic power unit | |
| CN202108032U (en) | Emergency operating device and gate system of winch hoist | |
| CN212717419U (en) | Crusher electric proportional flow control hydraulic system | |
| CN210454946U (en) | Electric control steering system of steering axle | |
| CN115370628A (en) | Rotary hydraulic system, rotary device and working machine | |
| CN212717418U (en) | Crusher load sensitive control hydraulic system | |
| CN107299655A (en) | A kind of swing arm decrease speed control loop of excavator | |
| CN209856129U (en) | Cartridge valve and use hydraulic system and washing and sweeping vehicle of this cartridge valve | |
| CN210087706U (en) | Hydraulic control device of hydraulic clutch of scraper conveyor | |
| CN211474556U (en) | Anchor hank equipment integrated control ware | |
| CN207830279U (en) | A kind of fracturing unit truck fan coolling hydraulic device with protecting against shock function | |
| CN202483996U (en) | Cooling protection device for hydraulic reversing system | |
| CN218325547U (en) | Motor safety oil-supplementing valve group | |
| JP2013083293A (en) | Hydraulic device for working machine | |
| JPH02245573A (en) | Closed loop type static fluid pressure transmission device | |
| CN102733445B (en) | Pilot oil source valve group for small-size hydraulic excavator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200818 |
|
| RJ01 | Rejection of invention patent application after publication |