CN204041466U - The mobile screw machine suction valve that low load starts - Google Patents
The mobile screw machine suction valve that low load starts Download PDFInfo
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- CN204041466U CN204041466U CN201420513592.2U CN201420513592U CN204041466U CN 204041466 U CN204041466 U CN 204041466U CN 201420513592 U CN201420513592 U CN 201420513592U CN 204041466 U CN204041466 U CN 204041466U
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- valve
- suction valve
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- normally closed
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Abstract
The utility model relates to the mobile screw machine suction valve that a kind of low load starts, comprise suction valve open in usual, normally closed butterfly valve is provided with in the upper end of suction valve open in usual, the side of normally closed butterfly valve is connected by the side of piston-cylinder with suction valve open in usual, the upper valve body of normally closed butterfly valve is connected with one end of valve rod, the other end of valve rod is connected with one end of connecting rod, and the other end of connecting rod is connected with the upper end of piston-cylinder, and the lower end of piston-cylinder is connected with the lower valve body of suction valve open in usual.The utility model has rational in infrastructure, robust performance, long service life, and butterfly valve is by cylinder control switch, and cylinder control end is communicated with screw machine barrel of oil and gas, starts load little, the advantage that closing velocity is fast.
Description
Technical field
The utility model relates to the mobile screw machine suction valve that a kind of low load starts.
Background technique
Current mobile screw machine suction valve is mainly divided into two large classes, and a class is suction valve open in usual, and another kind of is Normally closed type suction valve.The advantage of Normally closed type suction valve is that screw machine startup load is little, when shortcoming is high pressure unloading, closing velocity is slow, when terminal is without pressurized air, exhaust pressure cannot be closed rapidly because of Normally closed type suction valve, exhaust pressure is caused to exceed rated pressure 2 ~ 3bar, in order to allow safety valve not open during superpressure, the setting pressure of safety valve often improves in complete-system vendor.When suction valve advantage open in usual is high pressure unloading, closing velocity is quickly, and when terminal is without pressurized air, exhaust pressure can not exceed rated pressure substantially, and it is comparatively large that shortcoming is that screw machine starts duty ratio, when temperature is lower in the wild, and performance more obvious.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, and provide a kind of rational in infrastructure, robust performance, starts load little, the mobile screw machine suction valve of the low load startup that closing velocity is fast.
The purpose of this utility model is achieved through the following technical solutions: the mobile screw machine suction valve that a kind of low load starts, comprise suction valve open in usual, normally closed butterfly valve is provided with in the upper end of suction valve open in usual, the side of normally closed butterfly valve is connected by the side of piston-cylinder with suction valve open in usual, the upper valve body of normally closed butterfly valve is connected with one end of valve rod, the other end of valve rod is connected with one end of connecting rod, the other end of connecting rod is connected with the upper end of piston-cylinder, and the lower end of piston-cylinder is connected with the lower valve body of suction valve open in usual.
The advantage that the utility model compared with prior art has is:
Rational in infrastructure, robust performance, long service life, butterfly valve is by cylinder control switch, and cylinder control end is communicated with screw machine barrel of oil and gas, and start load little, closing velocity is fast.
accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of mode of execution of the utility model;
Number in the figure: 1-suction valve open in usual, the normally closed butterfly valve of 2-, 3-piston-cylinder, 4-valve rod, 5-connecting rod.
embodiment:
in order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection domain.
As Fig. 1 shows a kind of mode of execution of the mobile screw machine suction valve that a kind of low load of the utility model starts: comprise suction valve 1 open in usual, normally closed butterfly valve 2 is provided with in the upper end of suction valve 1 open in usual, the side of normally closed butterfly valve 2 is connected with the side of suction valve 1 open in usual by piston-cylinder 3, the upper valve body of normally closed butterfly valve 2 is connected with one end of valve rod 4, the other end of valve rod 4 is connected with one end of connecting rod 5, the other end of connecting rod 5 is connected with the upper end of piston-cylinder 3, and the lower end of piston-cylinder 3 is connected with the lower valve body of suction valve 1 open in usual.
The utility model butterfly valve is by cylinder control switch, and cylinder control end is communicated with screw machine barrel of oil and gas.When movable screw air compressor starts, after installing normally closed butterfly valve additional, light-load starting the same as Normally closed type suction valve can be realized.Along with the pressure increase of barrel of oil and gas after normal startup, cylinder action, normally closed butterfly valve is opened, the whole service process after screw machine normally starts, and normally closed butterfly valve is in open mode all the time, does not participate in any tolerance and controls.Along with the release of gas in barrel of oil and gas after shutdown, the decline of pressure, cylinder resets under spring force, and normally closed butterfly valve cuts out.
The utility model has rational in infrastructure, robust performance, long service life, and butterfly valve is by cylinder control switch, and cylinder control end is communicated with screw machine barrel of oil and gas, starts load little, the advantage that closing velocity is fast.
Claims (2)
1. the mobile screw machine suction valve of one kind low load startup, comprise suction valve open in usual (1), it is characterized in that: be provided with normally closed butterfly valve (2) in the upper end of described suction valve open in usual (1), the side of described normally closed butterfly valve (2) is connected with the side of suction valve open in usual (1) by piston-cylinder (3).
2. the mobile screw machine suction valve of a kind of low load startup according to claim 1, it is characterized in that: the one end being connected with valve rod (4) on the upper valve body of described normally closed butterfly valve (2), the other end of described valve rod (4) is connected with one end of connecting rod (5), the other end of described connecting rod (5) is connected with the upper end of piston-cylinder (3), and the lower end of described piston-cylinder (3) is connected with the lower valve body of suction valve open in usual (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513592.2U CN204041466U (en) | 2014-09-09 | 2014-09-09 | The mobile screw machine suction valve that low load starts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513592.2U CN204041466U (en) | 2014-09-09 | 2014-09-09 | The mobile screw machine suction valve that low load starts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041466U true CN204041466U (en) | 2014-12-24 |
Family
ID=52242136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420513592.2U Active CN204041466U (en) | 2014-09-09 | 2014-09-09 | The mobile screw machine suction valve that low load starts |
Country Status (1)
| Country | Link |
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| CN (1) | CN204041466U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134609A (en) * | 2015-10-12 | 2015-12-09 | 南通市红星空压机配件制造有限公司 | Air inlet valve for screw vacuum pump |
| CN105201856A (en) * | 2015-10-12 | 2015-12-30 | 南通市红星空压机配件制造有限公司 | Inlet valve of high-pressure mobile screw air compressor |
| CN108006270A (en) * | 2018-01-16 | 2018-05-08 | 南通市红星空压机配件制造有限公司 | Dry type oilless (oil free) compressor intake valve |
-
2014
- 2014-09-09 CN CN201420513592.2U patent/CN204041466U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134609A (en) * | 2015-10-12 | 2015-12-09 | 南通市红星空压机配件制造有限公司 | Air inlet valve for screw vacuum pump |
| CN105201856A (en) * | 2015-10-12 | 2015-12-30 | 南通市红星空压机配件制造有限公司 | Inlet valve of high-pressure mobile screw air compressor |
| CN105134609B (en) * | 2015-10-12 | 2017-06-16 | 南通市红星空压机配件制造有限公司 | A kind of intake valve for screw vacuum pump |
| CN108006270A (en) * | 2018-01-16 | 2018-05-08 | 南通市红星空压机配件制造有限公司 | Dry type oilless (oil free) compressor intake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |