CN203756655U - Liquid supply system for high-flow pump - Google Patents
Liquid supply system for high-flow pump Download PDFInfo
- Publication number
- CN203756655U CN203756655U CN201420042480.3U CN201420042480U CN203756655U CN 203756655 U CN203756655 U CN 203756655U CN 201420042480 U CN201420042480 U CN 201420042480U CN 203756655 U CN203756655 U CN 203756655U
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- Prior art keywords
- pump
- oil tank
- pressure oil
- oil
- pressure
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Abstract
The utility model relates to a liquid supply system for a high-flow pump. The liquid supply system comprises a main pump (7), an oil tank (8) connected with the main pump (7) and an oil press (6) connected to the main pump (7) and a loop of the oil tank (8). The liquid supply system for the high-flow pump is further provided with a screw pump (1), a pressure oil tank (3) and a charging device (5) which is arranged at the top of the pressure oil tank (3) and used for providing air pressure of 0.1-0.2 MPa for the pressure oil tank (3). An oil inlet of the screw pump (1) is connected with an oil outlet of the oil tank (8), an oil outlet of the screw pump (1) is connected with an oil inlet of the pressure oil tank (3), and an oil outlet of the pressure oil tank (3) is connected with an oil inlet of the main pump (7). The liquid supply system for the high-flow pump improves oil absorbing conditions of the oil pump, prolongs service life of the pump, reduces noise and shortens the liquid supply distance of the pump, the on-site mounting quantity of the system and space occupation are reduced, and foundation building investment and device cost are reduced.
Description
Technical field
The utility model belongs to Large Hydraulic System, particularly a kind of high-capacity pump liquid-supplying system.
Background technique
The general discharge of main pump of main pump of big-flow high-pressure hydraulic system is larger, and quantity is many, and large discharge pump requires suction inlet will have at least pressure of 0.08MPa, to ensure that main pump has good feed flow, improves utilization efficiency and the life-span of pump.Traditional feed liquid way is that natural-drop mode reaches the required minimum pressure of mouth piece, places low level by main pump, and by high open type oil tank frame, about 7 ~ 8 meters of both drops just reach the required pressure of mouth piece substantially; This mode oil tank frame higher, and between main pump, connecting tube is long, and latus rectum is large, intermediate connecting ring joint is more, and on-site installation work amount is large, and pump inlet port pressure is subject to oil tank liquid level variable effect larger, this mode floor space is large, capital construction amount is large, and system investment is larger, and maintenance maintenance amount is large.
Model utility content
The purpose of this utility model one is to provide a kind of high-capacity pump liquid-supplying system, it is to utilize pressure oil tank to be filled with 0.1～0.2Mpa air pressure, give main pump forced feed, main pump can be arranged in pressure oil tank around and on a horizontal plane, thereby shortens connecting tube, reduces pipeline drift diameter, reduces installation workload and floor space.
Object two is to provide pressure substantially constant oil pressure, improves main pump oil suction, improves the main pump life-span.
The technical solution adopted in the utility model is: a kind of high-capacity pump liquid-supplying system, the fuel tank that comprises main pump, be connected with main pump and be connected to main pump and fuel tank loop on oil hydraulic press, it is characterized in that: described high-capacity pump liquid-supplying system be also provided with screw pump, pressure oil tank and be arranged on pressure oil tank top for the inflator to 0.1～0.2Mpa air pressure is provided in this pressure oil tank;
The filler opening of described screw pump is connected with the oil outlet of fuel tank, and the oil outlet of screw pump is connected with the filler opening of pressure oil tank, and the oil outlet of pressure oil tank is connected with the filler opening of main pump.
Between described screw pump and fuel tank, be connected with filter and cooler.
Described high-capacity pump liquid-supplying system, is characterized in that: also include a side that is arranged on pressure oil tank fluid level controller, be arranged on the solenoid valve of this pressure oil tank bottom, according to the programmable controller PLC of solenoid valve folding described in the testing signal control of fluid level controller, oil hydraulic press and main pump stall;
On described fluid level controller, be provided with high liquid level, middle liquid level and low liquid level;
When liquid level in pressure oil tank is during higher than high liquid level, programmable controller PLC opens according to the input signal control solenoid valve of fluid level controller, to oil return in fuel tank;
When liquid level in pressure oil tank is during lower than middle liquid level, programmable controller PLC is according to the input signal control closed electromagnetic valve of fluid level controller;
When liquid level in pressure oil tank is during lower than low liquid level, programmable controller PLC is according to the input signal control oil hydraulic press of fluid level controller and main pump stall.
Described inflator is air pump.
Advantage of the present utility model: the charge oil pressure substantially constant of this high-capacity pump liquid-supplying system
,the oil suction situation of having improved oil pump, has improved the life-span of pump, and has reduced noise, oil-absorbing pipeline is shorter, and integral arrangement is compacter, has also greatly shortened the feed flow distance of pump, reduce system for field installation and space hold, infrastructure input and equipment cost are reduced greatly.
Below with reference to accompanying drawing, the utility model is described in further details.
Brief description of the drawings
Fig. 1 is the principle schematic of high-volume hydraulic system.
Description of reference numerals: 1, screw pump; 2, fluid level controller; 3, pressure oil tank; 4, solenoid valve; 5, inflator; 6, oil hydraulic press; 7, main pump; 8, fuel tank; 9, programmable controller PLC.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of high-capacity pump liquid-supplying system providing at the utility model, the fuel tank 8 that comprises main pump 7, be connected with main pump 7 and be connected to the oil hydraulic press 6 on main pump 7 and fuel tank 8 loops, described high-capacity pump liquid-supplying system be also provided with screw pump device 1, pressure oil tank 3 and be arranged on pressure oil tank 3 tops for the inflator 5 to 0.1～0.2Mpa air pressure is provided in this pressure oil tank 3;
The filler opening of screw pump 1 is connected with the oil outlet of fuel tank 8, and the oil outlet of screw pump 1 is connected with the filler opening of pressure oil tank 3, and the oil outlet of pressure oil tank 3 is connected with the filler opening of main pump 7.
Between screw pump 1 and fuel tank 8, be connected with filter and cooler.
This high-capacity pump liquid-supplying system also include a side that is arranged on pressure oil tank 3 fluid level controller 2, be arranged on the solenoid valve 4 of these pressure oil tank 3 bottoms, according to the programmable controller PLC9 of solenoid valve 4 foldings described in the testing signal control of fluid level controller 2, oil hydraulic press 6 and main pump 7 stalls; On described fluid level controller 2, be provided with high liquid level, middle liquid level and low liquid level; When the interior liquid level of pressure oil tank 3 is during higher than high liquid level, programmable controller PLC9 opens according to the input signal control solenoid valve 4 of fluid level controller 2, to the interior oil return of fuel tank 8; When the interior liquid level of pressure oil tank 3 is during lower than middle liquid level, programmable controller PLC9 closes according to the input signal control solenoid valve 4 of fluid level controller 2; When the interior liquid level of pressure oil tank 3 is during lower than low liquid level, programmable controller PLC9 is according to the input signal control oil hydraulic press 6 of fluid level controller 2 and main pump 7 stalls; Protect it can not inhale sky and damage.
And above-mentioned inflator 5 is air pumps.
Pressure oil tank 3 is filled with the air pressure of 0.1～0.2Mpa by inflator 5, the air pressure by pressure oil tank 3 is to main pump 7 forced feeds, by screw pump 1 always from fuel tank 8 give pressure oil tank 3 supplement through filter filter, the cooled hydraulic oil of cooler; By the oil of fuel tank 8 cooling supply pressure oil tank 3 after filtration, for the variation of pressure oil tank 3 liquid levels, monitored by fluid level controller 2 by programmable controller PLC9.
In the working procedure of this system, pressure oil tank 3 is the containers with the large capacity oil storage of pressure, main pump 7 is carried out to forced feed, and charge oil pressure is constant, and the pressure oil that main pump 7 provides is after oil hydraulic press 6 execution, and oil return is to fuel tank 8; Because main pump 7 is in the interior oil suction of pressure oil tank 3, cause pressure oil tank 3 liquid levels to reduce, screw pump device 1 supplements through filtering cooling hydraulic oil to pressure oil tank 3 from fuel tank 8 always, and the repairing flow of screw pump device 1 is greater than the oil suction flow of main pump 7.Forced feed by pressure oil tank 3 to main pump 7, has improved the oil suction situation of oil pump, the life-span of having improved pump, and reduce noise, also the feed flow distance that has greatly shortened pump, has reduced system for field installation and space hold, and infrastructure input and equipment cost are reduced greatly.
The fluid level controller 2 relating in the present embodiment can be current general various liquid-level switches, as electronic type, pressure type, float-ball type etc.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (4)
1. a high-capacity pump liquid-supplying system, the fuel tank (8) that comprises main pump (7), be connected with main pump (7) and be connected to the oil hydraulic press (6) on main pump (7) and fuel tank (8) loop, is characterized in that: described high-capacity pump liquid-supplying system be also provided with screw pump (1), pressure oil tank (3) and be arranged on pressure oil tank (3) top for the inflator (5) to 0.1～0.2Mpa air pressure is provided in this pressure oil tank (3);
The filler opening of described screw pump (1) is connected with the oil outlet of fuel tank (8), and the oil outlet of screw pump (1) is connected with the filler opening of pressure oil tank (3), and the oil outlet of pressure oil tank (3) is connected with the filler opening of main pump (7).
2. high-capacity pump liquid-supplying system as claimed in claim 1, is characterized in that: between described screw pump (1) and fuel tank (8), be connected with filter and cooler.
3. high-capacity pump liquid-supplying system as claimed in claim 1 or 2, is characterized in that: also include a side that is arranged on pressure oil tank (3) fluid level controller (2), be arranged on the solenoid valve (4) of this pressure oil tank (3) bottom, according to the programmable controller PLC(9 of solenoid valve (4) folding described in the testing signal control of fluid level controller (2), oil hydraulic press (6) and main pump (7) stall);
On described fluid level controller (2), be provided with high liquid level, middle liquid level and low liquid level;
In the time that in pressure oil tank (3), liquid level is higher than high liquid level, programmable controller PLC(9) open according to the input signal control solenoid valve (4) of fluid level controller (2), to the interior oil return of fuel tank (8);
In the time that in pressure oil tank (3), liquid level is lower than middle liquid level, programmable controller PLC(9) close according to the input signal control solenoid valve (4) of fluid level controller (2);
In the time that in pressure oil tank (3), liquid level is lower than low liquid level, programmable controller PLC(9) according to the input signal control oil hydraulic press (6) of fluid level controller (2) and main pump (7) stall.
4. high-capacity pump liquid-supplying system as claimed in claim 1 or 2, is characterized in that: described inflator (5) is air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042480.3U CN203756655U (en) | 2014-01-23 | 2014-01-23 | Liquid supply system for high-flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042480.3U CN203756655U (en) | 2014-01-23 | 2014-01-23 | Liquid supply system for high-flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756655U true CN203756655U (en) | 2014-08-06 |
Family
ID=51251936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420042480.3U Withdrawn - After Issue CN203756655U (en) | 2014-01-23 | 2014-01-23 | Liquid supply system for high-flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758826A (en) * | 2014-01-23 | 2014-04-30 | 中国重型机械研究院股份公司 | Liquid feed system of high-capacity pump |
-
2014
- 2014-01-23 CN CN201420042480.3U patent/CN203756655U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758826A (en) * | 2014-01-23 | 2014-04-30 | 中国重型机械研究院股份公司 | Liquid feed system of high-capacity pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140806 Effective date of abandoning: 20160203 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |