CN201606224U - Air compressor air intake valve for railway locomotives - Google Patents
Air compressor air intake valve for railway locomotives Download PDFInfo
- Publication number
- CN201606224U CN201606224U CN2010201154930U CN201020115493U CN201606224U CN 201606224 U CN201606224 U CN 201606224U CN 2010201154930 U CN2010201154930 U CN 2010201154930U CN 201020115493 U CN201020115493 U CN 201020115493U CN 201606224 U CN201606224 U CN 201606224U
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- valve
- seat
- piston
- spring
- air
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- Expired - Lifetime
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Abstract
The utility model discloses an air compressor air intake valve for railway locomotives. The valve is in a structure comprising a valve body and a valve seat. An air inlet and a valve plate are arranged on the valve body, an air outlet is arranged on the valve seat, a piston is arranged in the cavity of the valve seat, the cavity below the piston is communicated with a discharging pipe, a first spring seat is arranged on the top of the cavity of the valve seat, and a return spring is arranged between the piston and the first spring seat. The utility model makes the improvement that a second spring seat and a retainer ring are arranged on the lower part of the valve body, and an air intake spring is clamped between the valve plate and the retainer ring; central holes are arranged on the second spring seat and the first spring seat, the valve rod of the valve plate is inserted through the central holes, and the lower end surface of the valve rod is opposite to the upper end surface of the piston rod of the piston. The air inlet valve plate of the air intake valve can be timely and effectively closed, so freezing, emulsifying and other problems resulting from machine halt can not occur under severe climate conditions. The utility model fully meets the use requirements of railway traffic, particularly railway locomotives.
Description
Technical field
The utility model relates to the air inlet technology of air compressor, specifically a kind of inlet valve of air compressor for railway locomotive.
Background technique
Compressor is the machine that air pressure is shortened into pressurized gas, at suction valve of air inlet section needs of machine, opens air inlet pipeline when the purpose of this suction valve is compressor operating, closes air inlet pipeline during shutdown.
For rail traffic vehicles, the air compressor that uses on the railway locomotive especially, the locomotive place of arrival, various places weather difference, its working environment has very big variation, may arrive temperature utmost point low country or the high area of humidity of the air such as railway locomotive.For the extremely low weather conditions of temperature, in the time period of shutting down after air compressor is made wind to train, air compressor may freeze; For the weather conditions of high humidity in summer, the low temperature that compressor shutdown caused may make airborne moisture condense in compressor and cause lubricating oil emulsion, thereby the accident that may cause compressor to be burnt takes place.Solution for the problems referred to above; be under above-mentioned extreme weather conditions, under the situation of the machine that do not have a power failure, the oil gas tube pressure of keeping compressor is to avoid shutting down problems such as freezing of may causing; at this moment, suction valve suction port place valve plate is instant, effectively closure is necessary condition.
The structure of suction valve of the prior art generally comprises valve body and valve seat, has suction port and valve plate is installed on valve body, has the air outlet on valve seat, in the valve seat cavity piston is installed, the cavity and the bleeder pipe fluid communication of piston below.Top at the valve seat cavity is provided with spring seat, and card has Returnning spring between piston and the spring seat, has cavity in piston rod, and the valve rod of valve plate wears check spring and penetrates downwards in this cavity.Adopt the suction valve of this structure, its valve plate closure is under the rebounding force effect of the check spring of pressurized, on be about to air inlet closure.Its shortcoming is that then air inlet closure is better if spring force is bigger, but the consequence of bringing is that the suction port resistance of air is bigger.If spring force is less, though then the suction port resistance of air is smaller,, can instant, effective closure of valve plate be impacted.And, in case this check spring lost efficacy, then can make the suction port valve plate can not be effectively closed when needed.
The model utility content
The purpose of this utility model be exactly to provide a kind of suction port valve plate can be immediately, effectively closed inlet valve of air compressor for railway locomotive, with satisfy track traffic especially on the railway locomotive to the user demand of air compressor.
The utility model is achieved in that this inlet valve of air compressor for railway locomotive, comprise valve body and valve seat, on valve body, have suction port and valve plate is installed, on valve seat, have the air outlet, in the valve seat cavity, piston is installed, the cavity and the bleeder pipe fluid communication of piston below, be provided with first spring seat at the top of valve seat cavity, between piston and described first spring seat Returnning spring is housed, its improvements are to be provided with second spring seat and back-up ring in valve body lower portion, are installed with the air inlet spring between valve plate and back-up ring; On second spring seat and first spring seat, have center hole, the valve rod of cross-under valve plate in the described center hole, this valve rod lower end surface is relative with the piston rod upper-end surface of piston.
The utility model is provided with second spring seat in valve body lower portion, between the valve plate and second spring seat, be installed with the air inlet spring, in the compressor normal working, when pressure rises to rated pressure, the inside and outside differential pressure of suction port reduces, valve plate moves upward under the elastic force of air inlet spring promotes, and it is closed that suction port is tending towards; Meanwhile, compressor oil inflator inner high voltage gas is emitted and is promoted piston through bleeder pipe and moves upward, because the valve rod lower end surface is relative with the piston rod upper-end surface of piston, therefore, the piston that moves upward is the valve plate jack-up that makes progress, and makes it with the effective closure of suction port.Thus, when air compressor pressure rises to rated pressure, even the air inlet spring force is less, under the acting in conjunction of air inlet spring and piston rod, valve plate still can be instant with suction port in the very first time, effectively closed, thereby effectively solve the suction port valve plate effectively closed with circulation status under the contradiction that exists between excessive of resistance of air, when also having solved the air inlet spring failure on the other hand, the problem that valve plate can't closure.Make this air compressor can definitely guarantee under adverse weather condition, can not occur to shut down thus and then the appearance of problem such as freezing of causing, emulsification, satisfy the especially user demand of railway locomotive of track traffic.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Shown in Figure 1, this inlet valve of air compressor for railway locomotive, comprise valve body 8 and valve seat 1, on valve body 8, have suction port and valve plate 7 is installed, on valve seat 1, have the air outlet, piston 3 is installed in the valve seat cavity, the cavity and bleeder pipe 2 fluid communication of piston below, be provided with first spring seat 4 at the top of valve seat 1 cavity, between piston 3 and described first spring seat 4 Returnning spring 9 is housed, be provided with second spring seat 6 and back-up ring 5 in valve body lower portion, between valve plate 7 and back-up ring 5, be installed with air inlet spring 10.On second spring seat 6 and first spring seat 4, have center hole, the valve rod of cross-under valve plate 1 in the described center hole, this valve rod lower end surface is relative with the piston rod upper-end surface of piston 3.
Among Fig. 1, solenoid valve 11 is a normally open solenoid valve, when the unit proper functioning; solenoid valve 11 gets electric, valve closes, at this moment; suction valve valve plate 7 is an opening state, when pressure rises to rated pressure, temperature reduction problem occurs for avoiding air compressor to shut down; the action of air reservoir pressure switch, solenoid valve 11 dead electricity, valve open; oil gas cylinder pressure height; gas under pressure, a part from the thin base of oil through solenoid valve 11 to bleeder pipe 2 in suction valve valve seat cavity, the suction valve valve plate is closed.Another part is divided into two-way again, one the tunnel is off-load usefulness, and another road sets up one-way valve 12 to communicate with valve body, participates in the internal gas circulation and sets up oil pressure, if simultaneously oil pressure is not enough then mend into small amount of fresh air from the unloading hole of suction valve, the oil gas cylinder pressure is maintained under the normal oil pressure state.When the air reservoir internal pressure drops to certain value, the action of air reservoir pressure switch, solenoid valve gets electric, valve closes, the suction valve valve plate is opened, and compressor is in running order.
Claims (1)
1. inlet valve of air compressor for railway locomotive, comprise valve body (8) and valve seat (1), on valve body (8), have suction port and valve plate (7) is installed, on valve seat (1), have the air outlet, piston (3) is installed in the valve seat cavity, the cavity and bleeder pipe (2) fluid communication of piston below, top at valve seat (1) cavity is provided with first spring seat (4), between piston (3) and described first spring seat (4) Returnning spring (9) is housed, it is characterized in that being provided with second spring seat (6) and back-up ring (5), between valve plate (7) and back-up ring (5), be installed with air inlet spring (10) in valve body lower portion; On second spring seat (6) and first spring seat (4), have center hole, the valve rod of cross-under valve plate (1) in the described center hole, this valve rod lower end surface is relative with the piston rod upper-end surface of piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201154930U CN201606224U (en) | 2010-02-11 | 2010-02-11 | Air compressor air intake valve for railway locomotives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201154930U CN201606224U (en) | 2010-02-11 | 2010-02-11 | Air compressor air intake valve for railway locomotives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606224U true CN201606224U (en) | 2010-10-13 |
Family
ID=42950930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201154930U Expired - Lifetime CN201606224U (en) | 2010-02-11 | 2010-02-11 | Air compressor air intake valve for railway locomotives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737304A (en) * | 2010-02-11 | 2010-06-16 | 石家庄嘉祥精密机械有限公司 | Inlet valve of air compressor for railway locomotive |
-
2010
- 2010-02-11 CN CN2010201154930U patent/CN201606224U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737304A (en) * | 2010-02-11 | 2010-06-16 | 石家庄嘉祥精密机械有限公司 | Inlet valve of air compressor for railway locomotive |
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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: 20101013 Effective date of abandoning: 20120111 |