CN105134609A - Air inlet valve for screw vacuum pump - Google Patents
Air inlet valve for screw vacuum pump Download PDFInfo
- Publication number
- CN105134609A CN105134609A CN201510656125.4A CN201510656125A CN105134609A CN 105134609 A CN105134609 A CN 105134609A CN 201510656125 A CN201510656125 A CN 201510656125A CN 105134609 A CN105134609 A CN 105134609A
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- valve
- valve body
- vacuum pump
- screw vacuum
- air inlet
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Abstract
The invention relates to an air inlet valve for a screw vacuum pump. The air inlet valve for the screw vacuum pump comprises a valve body, the upper portion of the valve body is provided with an air suction port, and the lower portion of the valve body is provided with an air exhaust port; one side of the valve body is connected with a servo air cylinder through a connecting device, the lower end of the servo air cylinder is provided with an oil gas barrel, the low pressure side of the servo air cylinder is communicated with an air suction pipeline arranged in front of the valve body, and the high pressure side of the servo air cylinder is communicated with the oil gas barrel; central spindles are symmetrically arranged in the valve body, and each central spindle is sleeved with a check valve plate and a balancing weight; the connecting device comprises a valve rod, a connecting rod and a joint bearing, and the connecting rod is connected with the valve rod and the joint bearing. The air inlet valve for the screw vacuum pump has the advantages that the structure is reasonable, the performance is firm, the loads in the initial starting stage can be effectively controlled, the equipment cost is saved, the operation cost of the vacuum pump is also relatively lower, and the energy saving effect is achieved.
Description
Technical field
The present invention relates to a kind of suction valve, particularly a kind of suction valve for screw vacuum pump.
Background technique
General screw vacuum pump suction valve, when the laggard air valve of screw vacuum pump startup passes through electromagnetic valve, namely open completely, the shortcoming of this control mode is, because screw vacuum pump head belongs to positive displacement body, when screw vacuum pump initial start stage just has a large amount of gas to suck, the load of main frame is very large, in order to prevent motor overload, the motor of the power needing configuration relatively high, operating cost is higher.
Summary of the invention
The object of the invention is to overcome above deficiency, provide a kind of rational in infrastructure, robust performance, operating cost is low, the more energy-conservation suction valve for screw vacuum pump.
Object of the present invention is achieved through the following technical solutions: a kind of suction valve for screw vacuum pump, comprise valve body, intakeport is provided with above described valve body, below is provided with relief opening, be connected with servo cylinder by connection set in the side of described valve body, barrel of oil and gas is provided with in described servo cylinder lower end, the low voltage side of described servo cylinder communicates with the pump-line before valve body, the high pressure side of described servo cylinder communicates with barrel of oil and gas, mandrel is arranged with in described valve body, on described mandrel, cover has check valve plate and balancing weight, described connection set comprises valve rod, connecting rod and joint shaft bearing, the connection of described connecting rod is connected to valve rod and joint shaft bearing.
The advantage that the present invention compared with prior art has is:
Rational in infrastructure, robust performance, effectively can control the load of initial start stage, can match the motor that power is smaller, has both saved the cost of equipment, and the operating cost of vacuum pump is also relatively low, serves energy-conservation effect.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is sectional view of the present invention;
Number in the figure: 1-valve body, 2-intakeport, 3-valve rod, 4-connecting rod, 5-joint shaft bearing, 6-servo cylinder, 7-pump-line, 8-barrel of oil and gas, 9-mandrel, 10-check valve plate, 11-balancing weight, 12-relief opening.
embodiment:
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1-2 shows the embodiment of a kind of suction valve for screw vacuum pump of the present invention: comprise valve body 1, intakeport 2 is provided with above described valve body 1, below is provided with relief opening 12, be connected with servo cylinder 6 by connection set in the side of described valve body 1, barrel of oil and gas 8 is provided with in described servo cylinder 6 lower end, the low voltage side of described servo cylinder 6 communicates with the pump-line 7 before valve body 1, the high pressure side of described servo cylinder 6 communicates with barrel of oil and gas 8, mandrel 9 is arranged with in described valve body 1, on described mandrel 9, cover has check valve plate 10 and balancing weight 11, described connection set comprises valve rod 3, connecting rod 4 and joint shaft bearing 5, the connection of described connecting rod 4 is connected to valve rod 3 and joint shaft bearing 5.
When screw machine vacuum pump works, check valve plate is opened, and rotates along mandrel, and servo cylinder controls valve plate and opens several angle, and control the gas flow entering screw machine, the gas entering screw machine via valve plate is fewer, and screw machine degree of vacuum is larger; When screw machine quits work, servo cylinder controls valve plate and closes, and check valve plate is automatically closed under the effect of balancing weight;
Servo cylinder high pressure side communicates with barrel of oil and gas, and low voltage side communicates with pump-line before suction valve valve, servo cylinder can according in pump-line with the pressure difference in barrel of oil and gas, automatically control the aperture of suction valve in real time.
The present invention is by controlling servo cylinder with the pressure difference in barrel of oil and gas in pump-line, screw vacuum pump initial start stage, pressure difference is between the two smaller, suction valve is not exclusively opened, the gas that screw vacuum pump sucks is smaller, can the load of effective main control system, when after the pressure drop in pump-line, pressure reduction in it and barrel of oil and gas increases, suction valve standard-sized sheet, but at this moment because the pressure in pump-line is low, density is little, so the gaseous mass that screw vacuum pump sucks is also fewer, also smaller with regard to load, have employed the load that project screw vacuum pump suction valve effectively can control initial start stage, relatively general suction valve can match the smaller motor of power, both the cost of equipment had been saved, the operating cost of vacuum pump is also relatively low, serve energy-conservation effect.
Claims (2)
1. the suction valve for screw vacuum pump, comprise valve body (1), intakeport (2) is provided with in the top of described valve body (1), below is provided with relief opening (12), it is characterized in that: be connected with servo cylinder (6) by connection set in the side of described valve body (1), barrel of oil and gas (8) is provided with in described servo cylinder (6) lower end, the pump-line (7) that the low voltage side of described servo cylinder (6) is front with valve body (1) communicates, the high pressure side of described servo cylinder (6) communicates with barrel of oil and gas (8), mandrel (9) is arranged with in described valve body (1), check valve plate (10) and balancing weight (11) is had at the upper cover of described mandrel (9).
2. a kind of suction valve for screw vacuum pump according to claim 1, it is characterized in that: described connection set comprises valve rod (3), connecting rod (4) and joint shaft bearing (5), the connection of described connecting rod (4) is connected to valve rod (3) and joint shaft bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510656125.4A CN105134609B (en) | 2015-10-12 | 2015-10-12 | A kind of intake valve for screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510656125.4A CN105134609B (en) | 2015-10-12 | 2015-10-12 | A kind of intake valve for screw vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134609A true CN105134609A (en) | 2015-12-09 |
| CN105134609B CN105134609B (en) | 2017-06-16 |
Family
ID=54720112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510656125.4A Active CN105134609B (en) | 2015-10-12 | 2015-10-12 | A kind of intake valve for screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105134609B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1530054A (en) * | 1976-08-03 | 1978-10-25 | Chicago Pneumatic Tool Co | Rotary air compressors |
| US20070048147A1 (en) * | 2005-08-30 | 2007-03-01 | Hans Dunn | Dry operating screw-type compressor with pneumatically controlled air relief valve |
| CN201241832Y (en) * | 2008-08-04 | 2009-05-20 | 胡文光 | Compressor air inlet control valve |
| CN201650741U (en) * | 2010-04-19 | 2010-11-24 | 东莞市雅迪勤压缩机制造有限公司 | Screw type air compressor used for shield machine |
| CN201779019U (en) * | 2010-07-30 | 2011-03-30 | 上海斯可络压缩机有限公司 | Air inlet flow adjusting valve of high-displacement screw air compressor |
| CN201925170U (en) * | 2011-01-19 | 2011-08-10 | 宁波鲍斯能源装备股份有限公司 | Air intake device of screw compressor |
| CN204041466U (en) * | 2014-09-09 | 2014-12-24 | 南通市红星空压机配件制造有限公司 | The mobile screw machine suction valve that low load starts |
| CN205001201U (en) * | 2015-10-12 | 2016-01-27 | 南通市红星空压机配件制造有限公司 | A admission valve for screw vacuum pump |
-
2015
- 2015-10-12 CN CN201510656125.4A patent/CN105134609B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1530054A (en) * | 1976-08-03 | 1978-10-25 | Chicago Pneumatic Tool Co | Rotary air compressors |
| US20070048147A1 (en) * | 2005-08-30 | 2007-03-01 | Hans Dunn | Dry operating screw-type compressor with pneumatically controlled air relief valve |
| CN201241832Y (en) * | 2008-08-04 | 2009-05-20 | 胡文光 | Compressor air inlet control valve |
| CN201650741U (en) * | 2010-04-19 | 2010-11-24 | 东莞市雅迪勤压缩机制造有限公司 | Screw type air compressor used for shield machine |
| CN201779019U (en) * | 2010-07-30 | 2011-03-30 | 上海斯可络压缩机有限公司 | Air inlet flow adjusting valve of high-displacement screw air compressor |
| CN201925170U (en) * | 2011-01-19 | 2011-08-10 | 宁波鲍斯能源装备股份有限公司 | Air intake device of screw compressor |
| CN204041466U (en) * | 2014-09-09 | 2014-12-24 | 南通市红星空压机配件制造有限公司 | The mobile screw machine suction valve that low load starts |
| CN205001201U (en) * | 2015-10-12 | 2016-01-27 | 南通市红星空压机配件制造有限公司 | A admission valve for screw vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105134609B (en) | 2017-06-16 |
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