DE202016006303U1 - Bottom valve with a spring housing for a tank car - Google Patents

Abstract

Bottom valve with a spring housing (2) for a tank car, comprising a housing (1) of the bottom valve, a spring housing (2), a valve disk shaft (3), a compression spring (4), screws (5), a web (6) for a recording of the actuation of the ventilation valve, a valve seat (7), a seal (9) between the valve disc (14) and ring nut (10), an O-ring (8) and a contact pin (11), characterized by a three-armed spring housing (2 ) which has holes (c) in its base and acts against a valve seat (7), a valve seat (7) between the three-armed spring housing (2) and the housing (1) of the bottom valve, a housing (1) with a groove (e ) is arranged for an O-ring between the valve seat (7) and the bottom valve (1), and by screws (5) between the housing (1) and spring housing (2) is compressed.

Description

The invention relates to a bottom valve with a spring housing for a tank car according to the features of the preamble of the first protection claim.

The bottom valve with spring housing for a tank car is everywhere where a medium which is transported in a tank car, down and usually at the lowest point of the tank car to be removed from this.

For valves on tank cars different solutions are known.

EP 2 826 692 A2 describes a forced ventilation and vacuum safety valve for a dangerous goods transport tank, consisting of a cast housing with a pipe for a connection for a vapor recovery pipe and a lower opening on the housing, a connection flange in the housing for attachments to the tank, a valve disk for closing the lower opening with a shaft in a guide in the housing, a spring between an adjustable pressure piece and an inner side of the housing, a holder on the housing and a web on the valve disk. Forced vent valves are located at the top of the tank and serve to vent a gas when over-pressurized. Bottom valves serve the outlet a liquid.

In www.tkguard.com is described a suitable for this task bottom valve, which consists of a housing, a valve plate, an actuator, a valve stem, a spring and a lid. If the spring breaks, the valve rod loses its guidance and can no longer guide the valve disk in the specified direction. A simple assembly and disassembly of the spring in this device, especially when replacing the head holding the valve stem in its upper region is not possible.

DE 2930204 A1 describes a quick-closing valve with a housing, an inlet and an outlet and a valve control by a spring is arranged, with a spring break, a considerable effort is incurred to change the spring. A different arrangement of the actuation of the valve is not readily possible with this valve.

Another bottom valve with a spring housing is in the 6 the registration shown. Even with this valve, it is not readily possible to arrange the operation at a different angle. The spring housing has over the valve seat on an O-ring, which is located in an annular groove. The production of the annular groove and the insertion of the O-ring is extremely problematic, so that a tightness between the spring housing and the valve seat is achieved only with considerable effort and at a high error rate.

It is therefore an object of the invention to develop a bottom valve for a tank car, in which the spring housing and the valve seat with low manufacturing and assembly costs are sealed against the housing of the bottom valve and the operation should be positionable at different angles.

This object is achieved by a valve according to the characterizing features of the first protection claim.

Subclaims reflect advantageous solutions of the invention.

The inventive solution provides a bottom valve with a valve housing for a tank car, consisting of a housing of the bottom valve, a spring housing, a valve disk shaft, a compression spring, screws, a web for receiving the operation of the vent valve, a valve seat, a seal between the valve disk and Ring nut and a contact pin.

The bottom valve consists of a three-arm spring housing, which has holes in its base and acts against a valve seat. The valve seat is disposed between the three-armed spring housing and the housing of the bottom valve.

The housing of the bottom valve has a groove for an O-ring which is disposed between the valve seat and the bottom valve.

The housing and the spring housing are compressed by screws in such a way that the spring housing presses against the valve seat, wherein the valve seat and the housing of the bottom valve have a groove with a socket in which the O-ring is located. The O-ring in the groove between the valve seat and housing of the bottom valve is centered and compressed by means of the screws between spring housing and housing of the bottom valve, so that the housing of the bottom valve and the spring housing and the valve seat are sealed against each other pressure-tight.

The O-ring constitutes an elastic core which may be made of rubber. This elastic core is covered by a layer which may consist of FEP or PTFE, preferably of PTFE.

The sleeve-sheathed O-ring is pressed radially and mounted in the groove between the housing and the valve seat.

Furthermore, it is advantageous that the centering of the spring housing takes place on the housing of the bottom valve by fits. These fits must be suitable for creating a seal between the valve seat and the bottom valve housing through the O-ring.

Furthermore, it is advantageous to arrange three holes for the screws in the housing, which connect the spring housing and the housing of the bottom valve together.

Furthermore, it is advantageous to arrange six holes in the spring housing with which the spring housing is connectable to the housing. Through these six holes, the spring housing can be offset, for example, be arranged 180 degrees relative to the housing of the bottom valve, so that the operation can be offset, for example by 180 degrees. This is always necessary if the bottom valve from different, for example, from opposite directions to be served.

The innovation has the advantage that spring housing and valve seat with less manufacturing and assembly costs are sealed against the housing of the bottom valve and the web on the spring housing with little effort is positioned so that an operation can be done from different directions.

In the following, the innovation of an exemplary embodiment and seven figures will be explained in more detail. The figures show:

1 Perspective view of the spring housing; casing 1 not fully illustrated

2 Lateral view of the spring housing;

3 Top view of the spring housing;

4 Cut AA off 2 ;

5 Cut BB off 3 ;

6 Spring housing, according to the prior art;

The 1 shows a perspective view of the spring housing 2 which is three-armed and on which the valve plate shaft 3 is arranged, on which the bridge 6 located for receiving the actuation of the ventilation valve and in which the compression spring 4 is arranged. The spring housing 2 is by screws 5 with the housing 1 connected to the bottom valve and has six holes c, which are required to the spring housing 2 to arrange so that the bridge 6 can point in different directions.

The 2 shows the spring housing 2 and the case 1 of the bottom valve in a view from the side.

The 3 shows the case 1 the bottom valve and the spring housing 2 in a view from above with the footbridge 6 and screws 5 , located in the holes c in the spring housing 2 are located.

The 4 shows the section AA 2 with the jetty 6 on the spring housing 2 in which the compression spring 4 located. The compression spring 4 presses the valve plate underneath 14 with the seal 9 against the valve seat 7 , The seal 9 is with the ring nut 10 on the valve plate 14 attached. When opening the valve disk 14 pushes the contact pin 11 the valve plate 11 against the pressure of the compression spring 4 up. The valve seat 7 forms with the housing 1 the bottom valve groove e for the O-ring 8th wherein a fit a between the housing 1 and the valve seat 7 and a fit b between the spring housing 2 and the valve seat 7 arises. The valve seat 7 , the case 1 the bottom valve and the spring housing 2 are held together by means of screws. this is the 5 refer to. The housing 1 the bottom valve is bolted to the boiler, resulting in the 4 and 5 not shown.

The 5 shows the bottom valve with spring housing 2 in a cut out 3 , wherein the threaded holes d in the housing 1 you can see. In total there are three holes d in the housing 1 arranged. The screws 5 hold the spring housing 2 firmly on the housing 1 , The spring housing 2 holds the valve seat 7 in the case 1 firmly with the O-ring 8th in the groove e between the valve disk seat 7 and the housing 1 both against each other seals.

The 6 shows a bottom valve with a spring housing according to a prior art starting from the innovation.

LIST OF REFERENCE NUMBERS

1

Housing of the bottom valve

2

spring housing

3

Valve poppet stem

4

compression spring

5

Screw - 3 pieces

6

Bar for receiving the actuation of the ventilation valve

7

valve seat

8th

O-ring

9

poetry

10

ring nut

11

Contact pin

12

13

14

valve disc

a

Fit between housing 1 and valve seat 7

b

Fit between spring housing 2 and valve seat 7

c

Bore in spring housing 2-6 pieces

d

Threaded in the housing 1-3 pieces

e

Groove for O-ring 8th

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2826692 A2 [0004]
• DE 2930204 A1 [0006]

Cited non-patent literature

• www.tkguard.com [0005]

Claims (7)

Bottom valve with a spring housing ( 2 ) for a tank car, consisting of a housing ( 1 ) of the bottom valve, a spring housing ( 2 ), a valve plate ( 3 ), a compression spring ( 4 ), Screws ( 5 ), a footbridge ( 6 ) for receiving the actuation of the ventilation valve, a valve seat ( 7 ), a seal ( 9 ) between valve disc ( 14 ) and ring nut ( 10 ), an O-ring ( 8th ) and a contact pin ( 11 ), characterized by a three-armed spring housing ( 2 ) which has holes (c) in its base and against a valve seat ( 7 ) acts, a valve seat ( 7 ) between the three-armed spring housing ( 2 ) and the housing ( 1 ) of the bottom valve, a housing ( 1 ) with a groove (s) for an O-ring between the valve seat ( 7 ) and the bottom valve ( 1 ) and by screws ( 5 ) between housing ( 1 ) and spring housing ( 2 ) is compressed. Bottom valve according to claim 1, characterized in that the O-ring ( 8th ) represents a sheathed elastic core. Bottom valve according to claims 1 and 2, characterized in that the O-ring ( 8th ) consists of an elastic PTFE sheathed core. Bottom valve according to one of claims 1 to 3, characterized in that the groove (s) for the O-ring ( 8th ) through the housing ( 1 ) and the valve seat ( 7 ) is formed. Bottom valve according to one of claims 1 to 4, characterized in that the centering of the spring housing ( 2 ) on the housing ( 1 ) by a fits (a) between housing ( 1 ) and valve disk seat ( 7 ) and a fit (b) between the valve seat ( 7 ) and spring housing ( 2 ) he follows. Bottom valve according to one of claims 1 to 4, characterized in that in the housing ( 1 ) three holes (d) for the screws ( 5 ) are arranged. Bottom valve according to one of claims 1 to 6, characterized in that in the spring housing ( 2 ) are arranged six holes (c).

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