CN103322250A - Air reducing valve for ship - Google Patents
Air reducing valve for ship Download PDFInfo
- Publication number
- CN103322250A CN103322250A CN2012100814458A CN201210081445A CN103322250A CN 103322250 A CN103322250 A CN 103322250A CN 2012100814458 A CN2012100814458 A CN 2012100814458A CN 201210081445 A CN201210081445 A CN 201210081445A CN 103322250 A CN103322250 A CN 103322250A
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- valve
- cavity
- hole
- valve body
- lower cover
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Abstract
The invention discloses an air reducing valve for a ship. The air reducing valve comprises a valve body, a lower cover, a guide sleeve, a valve rod, an upper cover, a membrane, an ejector rod, an adjusting screw, an upper spring cushion, a lower spring cushion and a spring, wherein the valve body is internally provided with an upper cavity and a lower cavity as well as a shutoff valve hole, the upper cavity is used as an air outlet cavity, the lower cavity is used as an air inlet cavity, and the shutoff valve hole is used for communicating the upper cavity with the lower cavity; a sealing step, of which the outer diameter is almost equal to the inner diameter of the shutoff valve hole is arranged in the position, close to a valve disk, of the valve rod, and a seal ring is arranged below the sealing step; the valve body is further provided with a downstream pressure feedback hole which is communicated with the upper cavity and a lower pressure adjusting cavity in the valve body; a seal ring is positioned below the shutoff valve hole. The air reducing valve enables effective area of the shutoff valve hole acted by upstream pressure to be smaller, and open degree of the shutoff valve hole is adjusted through the downstream pressure, so that influence of the upstream pressure on the downstream pressure is less, and stability of the air reducing valve is improved.
Description
Technical field
The present invention relates to a kind of air decompressor, specifically, relate to the boats and ships air reducing valve.
Background technique
Existing ship power system adopts pneumatic mostly, therefore the pressurized air of air compressor output need to be reduced pressure.The boats and ships air reducing valve is in order to guarantee safety of ship, reliable operation, to provide compressed air pressure to remain a kind of valve that the standard-required value is constant.The air reducing valve of at present boats and ships thing special use, the air reducing valve that normal operation is common, working life is low, pressure stability is poor, the problem of poor sensitivity and these common air reducing valve ubiquities.Moreover the matching gap between valve rod and the lower cover is unreasonable in the existing air reducing valve, causes surface friction drag and guiding accuracy poor, and working sensitivity and sealing are poor, easily causes sealing malfunctioning.
Summary of the invention
Technical problem to be solved by this invention is can't be suitable for the problem of boats and ships and a kind of boats and ships air pressurized valve is provided for existing normal air reduction valve.This air reducing valve has advantages of that long service life, pressure stability are good.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
Boats and ships air pressurized valve comprises:
One valve body has an epicoele and cavity of resorption and the valve opening that dams in the described valve body, described epicoele is outlet chamber, and cavity of resorption is air-inlet cavity, and the described valve opening that dams is in order to link up upper and lower chamber; Also offer valve rod hole and lower cover tapped hole on described valve body, described valve rod hole is communicated with epicoele, and the lower cover tapped hole is communicated with cavity of resorption, described valve rod hole, dam valve opening and the coaxial setting of lower cover tapped hole;
One is threaded onto the lower cover in the described lower cover tapped hole, is provided with a dowel hole the end of with in the described lower cover;
One slip is arranged at the guide pin bushing in the interior dowel hole of described lower cover;
One from top to bottom passes valve rod hole and the valve rod of the valve opening that dams successively, and the lower end of described valve rod is connected with guide pin bushing by valve disc;
One loam cake;
One diaphragm, described diaphragm is installed on the valve body by described loam cake; Jointly define a pressure regulating cavity between described loam cake and the described valve body, described diaphragm is divided into upper pressure regulating cavity and lower pressure regulating cavity with described pressure regulating cavity;
One is threadedly connected to the push rod on the described valve stem tip, and the upper end of described push rod is provided with one and projects upwards the double-screw bolt that passes diaphragm;
One is installed in the adjusting screw of upper tops by fastening screw nut;
Be installed in upper and lower spring pad and spring in the described upper pressure regulating cavity, the Stud connection on wherein said lower spring pad and the described push rod, the upper spring pad contacts with described adjusting screw, and described spring is between upper and lower spring pad; It is characterized in that,
The position of closing on valve disc at described valve rod is provided with an external diameter and the described suitable sealed step of valve opening internal diameter of damming, and described sealed step below is provided with a seal ring; The downstream pressure feedback hole also is set on described valve body, and described downstream pressure feedback hole is communicated with epicoele and the lower pressure regulating cavity in the described valve body; Described sealing gasket is positioned at the below of the described valve opening that dams.
In a preferred embodiment of the invention, be covered with a calotte in described adjusting screw, described calotte is stuck in and covers on described.
Matching gap between the dowel hole in described guide pin bushing and the described lower cover is 0.1-0.12mm, is provided with seal ring at the outer ring surface of described guide pin bushing.
In order to discharge the gas in the loam cake, offer a vent that communicates with the external world described covering.
Owing to having adopted technological scheme as above, this air reducing valve structure is advanced, with high content of technology, has higher functional reliability, automaticity is high, optimize the matching gap between the dowel hole of guide pin bushing and lower cover, solved the contradiction of surface friction drag and guiding accuracy, improved working sensitivity and sealing.Moreover arrange one at valve body and be communicated with epicoele in the valve body and the downstream pressure feedback hole of lower pressure regulating cavity, improved the performance of closing of air reducing valve by the feedback of downstream pressure, improved the reliability of this air reducing valve operation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Further describe the present invention below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the air pressurized valve of the boats and ships shown in the figure comprises a valve body 100, have an epicoele 110 and cavity of resorption 120 and the valve opening 130 that dams in this valve body 100, epicoele 110 is outlet chamber, and cavity of resorption 120 is air-inlet cavity, and the valve opening 130 that dams is in order to link up upper and lower chamber 110,120; Epicoele 110 becomes horizontal arrangement with the axis of cavity of resorption 120, and pressurized air enters valve body 100 by cavity of resorption 120, flows into epicoele 110 by the valve opening 130 that dams again, flows out through epicoele 110.
Also offer valve rod hole 140 and lower cover tapped hole 150 on valve body 100, valve rod hole 140 is communicated with epicoele 110, and lower cover tapped hole 150 is communicated with cavity of resorption 120, valve rod hole 140, the 150 one-tenth coaxial settings of same vertical line of valve opening 130 and lower cover tapped hole of damming.
From bottom to top screw in the lower cover tapped hole 150 behind the lower cover 200 cover Upper gaskets 210, in lower cover 200, be provided with a dowel hole 220 the end of with; In this dowel hole 220, be placed with a guide pin bushing 300, matching gap between the dowel hole 220 in guide pin bushing 300 and the lower cover 200 is 0.1-0.12mm, guide pin bushing 300 can slide up and down in dowel hole 220 like this, outer ring surface at guide pin bushing 300 is provided with seal ring 310, and seal ring 310 is positioned at the below of the valve opening 130 that dams.Be provided with a tapped hole 320 in the guide pin bushing 300.
During installation, valve rod 400 is from top to bottom passed valve rod hole 140 and the valve opening 130 that dams successively, the lower end of valve rod 400 is a screw rod 410, and the upper end is for also being a double-screw bolt 420, and the double-screw bolt 410 of lower end is screwed in the tapped hole 320 of guide pin bushing 300 after passing valve disc 500.The position of closing on valve disc 500 at valve rod 400 is provided with an external diameter and dams the suitable sealed step 430 of valve opening 130 internal diameters, is provided with a seal ring 440 below sealed step 430; The purpose that seal ring 440 is set is reduction valve when closing, and improves the sealing effect of the valve opening 130 that dams.One push rod 600 is installed on the double-screw bolt 420 of valve rod 400 upper ends, and the upper end of push rod 600 is provided with a double-screw bolt that projects upwards 610.
The center of diaphragm 700 offers a center hole 710.These boats and ships also comprise upper and lower spring pad 810,820, spring 830, loam cake 900, adjusting screw 910 with the air pressurized valve, diaphragm 700 is as follows with these part erection sequences: at first diaphragm 700 is enclosed within on the double-screw bolt 610 of push rod 600, then screw on lower spring pad 810 at double-screw bolt 610, place spring 830 at lower spring pad 810 again, then press upper spring pad 810 at spring 830, close the loam cake 900 and flange edge of loam cake 900 is pressed on the diaphragm 700 adopts bolt 920 that loam cake 900 is fixed on the valve body 100 at last.After these parts install, again adjusting screw 910 is screwed on fastening screw nut 930 rear screw-ins and be arranged on the adjusting screw hole 940 at loam cake 900 tops and revolved, withstand on the upper spring pad 810.For dustproof, be covered with a calotte 950 in adjusting screw 910, calotte 940 is stuck on the loam cake 900.Jointly define a pressure regulating cavity between loam cake 900 and the valve body 100, diaphragm 700 is divided into upper pressure regulating cavity 960 and lower pressure regulating cavity 970 with pressure regulating cavity.
Boats and ships of the present invention also also arrange downstream pressure feedback hole 160 with the air pressurized valve on valve body 100, epicoele 110 and lower pressure regulating cavity 970 that downstream pressure feedback hole 160 is communicated with in the valve body 100.In order to discharge the gas in the loam cake 900, offer a vent 980 that communicates with the external world at loam cake 900 simultaneously.
The working principle of air reducing valve of the present invention is as follows: during use, rotation pressure regulating screw 910, by upper spring pad 810, spring 830, lower spring pad 810, diaphragm 700,400 motions of push rod 600 actuate valve stem, valve rod 400 valve disc 500 are with the dam open degree of valve opening 130 of control, control the flow that cavity of resorption 120 flows into epicoeles 110 interior air, thereby reach the purpose of air pressure behind the control valve.When not using air, be when air does not flow out behind the valve, pressure in the epicoele 110 increases, pressure in the epicoele 110 by the valve on the valve body 100 after feedback pressure outlet 160, lower pressure regulating cavity 960 feed back on the diaphragm 700, head on diaphragm 700 and rise, and the rising of diaphragm 700, rise by push rod 600 band ovable valve stems 400, the seal ring 310 that the valve rod 400 that rises drives on the valve disc 500 moves up, until close the valve opening 130 that dams, reaches balance.When using air, be when air flows out behind the valve, pressure in the epicoele 110 diminishes, feed back on the diaphragm 700 by feedback pressure outlet 160, lower pressure regulating cavity 960 behind the valve on the valve body 100, feedback pressure on the diaphragm 700 diminishes, spring 830 discharges, descending by lower spring pad 810, push rod 600 actuate valve stem 400, seal ring 310 on the descending drive valve disc 500 of valve rod 400 leaves the valve opening 130 that dams, the valve opening 130 that dams is opened, and air is flowed in the epicoele 110 by the valve opening 130 that dams by cavity of resorption 120.The present invention regulates pressure relief ranges by the acting in conjunction of pressure regulating screw 910, spring 830, diaphragm 700 and downstream pressure, has pressure relief ranges wide, the advantage that the pressure-reduced and-regulated precision is high.
Claims (4)
1. boats and ships air pressurized valve comprises:
One valve body has an epicoele and cavity of resorption and the valve opening that dams in the described valve body, described epicoele is outlet chamber, and cavity of resorption is air-inlet cavity, and the described valve opening that dams is in order to link up upper and lower chamber; Also offer valve rod hole and lower cover tapped hole on described valve body, described valve rod hole is communicated with epicoele, and the lower cover tapped hole is communicated with cavity of resorption, described valve rod hole, dam valve opening and the coaxial setting of lower cover tapped hole;
One is threaded onto the lower cover in the described lower cover tapped hole, is provided with a dowel hole the end of with in the described lower cover;
One slip is arranged at the guide pin bushing in the interior dowel hole of described lower cover;
One from top to bottom passes valve rod hole and the valve rod of the valve opening that dams successively, and the lower end of described valve rod is connected with guide pin bushing by valve disc;
One loam cake;
One diaphragm, described diaphragm is installed on the valve body by described loam cake; Jointly define a pressure regulating cavity between described loam cake and the described valve body, described diaphragm is divided into upper pressure regulating cavity and lower pressure regulating cavity with described pressure regulating cavity;
One is threadedly connected to the push rod on the described valve stem tip, and the upper end of described push rod is provided with one and projects upwards the double-screw bolt that passes diaphragm;
One is installed in the adjusting screw of upper tops by fastening screw nut;
Be installed in upper and lower spring pad and spring in the described upper pressure regulating cavity, the Stud connection on wherein said lower spring pad and the described push rod, the upper spring pad contacts with described adjusting screw, and described spring is between upper and lower spring pad; It is characterized in that,
The position of closing on valve disc at described valve rod is provided with an external diameter and the described suitable sealed step of valve opening internal diameter of damming, and described sealed step below is provided with a seal ring; The downstream pressure feedback hole also is set on described valve body, and described downstream pressure feedback hole is communicated with epicoele and the lower pressure regulating cavity in the described valve body; Described sealing gasket is positioned at the below of the described valve opening that dams.
2. boats and ships as claimed in claim 1 air pressurized valve is characterized in that, is covered with a calotte in described adjusting screw, and described calotte is stuck in and covers on described.
3. boats and ships as claimed in claim 1 air pressurized valve is characterized in that, the matching gap between the dowel hole in described guide pin bushing and the described lower cover is 0.1-0.12mm, is provided with seal ring at the outer ring surface of described guide pin bushing.
4. boats and ships as claimed in claim 1 air pressurized valve is characterized in that, offers a vent that communicates with the external world described covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100814458A CN103322250A (en) | 2012-03-23 | 2012-03-23 | Air reducing valve for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100814458A CN103322250A (en) | 2012-03-23 | 2012-03-23 | Air reducing valve for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103322250A true CN103322250A (en) | 2013-09-25 |
Family
ID=49191183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100814458A Pending CN103322250A (en) | 2012-03-23 | 2012-03-23 | Air reducing valve for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103322250A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065683A (en) * | 2015-07-20 | 2015-11-18 | 江苏通达船用阀泵有限公司 | Novel air reducing valve |
| CN105673900A (en) * | 2016-02-23 | 2016-06-15 | 上海井和海船用阀门有限公司 | Air reducing valve used for ships |
| CN106122570A (en) * | 2016-08-04 | 2016-11-16 | 上海申吉仪表有限公司 | Diesel coolant bypass valve |
| CN113431907A (en) * | 2020-03-23 | 2021-09-24 | 林庆辉 | Fluid valve integrating opening, closing and pressure reducing functions |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109153A (en) * | 1993-10-01 | 1995-09-27 | 速睦喜股份有限公司 | Pressure reducing valve |
| CN2630599Y (en) * | 2003-06-18 | 2004-08-04 | 方建文 | Diaphragm-direct-action type reducer |
| CN201202861Y (en) * | 2008-05-30 | 2009-03-04 | 宁波华成阀门有限公司 | Deep well water pump control valve |
| CN201651467U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air reducing valve for vehicle |
| CN202469113U (en) * | 2012-03-23 | 2012-10-03 | 上海井和海船用阀门有限公司 | Air reducing valve for ship |
-
2012
- 2012-03-23 CN CN2012100814458A patent/CN103322250A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109153A (en) * | 1993-10-01 | 1995-09-27 | 速睦喜股份有限公司 | Pressure reducing valve |
| CN2630599Y (en) * | 2003-06-18 | 2004-08-04 | 方建文 | Diaphragm-direct-action type reducer |
| CN201202861Y (en) * | 2008-05-30 | 2009-03-04 | 宁波华成阀门有限公司 | Deep well water pump control valve |
| CN201651467U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air reducing valve for vehicle |
| CN202469113U (en) * | 2012-03-23 | 2012-10-03 | 上海井和海船用阀门有限公司 | Air reducing valve for ship |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065683A (en) * | 2015-07-20 | 2015-11-18 | 江苏通达船用阀泵有限公司 | Novel air reducing valve |
| CN105673900A (en) * | 2016-02-23 | 2016-06-15 | 上海井和海船用阀门有限公司 | Air reducing valve used for ships |
| CN106122570A (en) * | 2016-08-04 | 2016-11-16 | 上海申吉仪表有限公司 | Diesel coolant bypass valve |
| CN113431907A (en) * | 2020-03-23 | 2021-09-24 | 林庆辉 | Fluid valve integrating opening, closing and pressure reducing functions |
| CN113431907B (en) * | 2020-03-23 | 2023-03-14 | 林庆辉 | Fluid valve integrating opening, closing and pressure reducing functions |
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Application publication date: 20130925 |