DE1946560C3 - Control valve for the bottom valve control in tankers - Google Patents

Description

Vcntilkolbens from the end position, whereby the

Valve piston mark the pressure medium inlet opening with 20
The invention relates to a control valve for the fact that the valve piston (40) controls the bottom valve in tank trucks, the latter being with a dog actuation device (45, 16) 25 Blind bore formed valve chamber is connected to a pressure medium opening at its inner end and the force of the spring (48) is greater than the flow opening, a working opening and a bleeding pressure force and less than the sum the opening is connected and the valve piston has the first (42) and the>, cite piston surface ben, which is preloaded by a spring in an end position (44) acting pressure forces in which the valve piston the

2. Control valve according to claim I, characterized in that the pressure medium inlet opening is blocked and a connector denotes. that the valve piston (40) a manure between the working opening and the venting third. of the first and second piston surfaces leaves open, the piston having two vcr- (42. 44) opposite piston surface (66). has large, unidirectional surfaces, which is larger than the first piston area (44), and 35 of which the first, the Druckmitteleinlaßöffniing the blind hole (28) always has an opposite surface behind this KoI and the second ben surface, optionally on a pressure mit- surface only after removing the valve piston from the telzuführ connectable opening (60) to the end position, whereby the valve piston shows the pressure, central inlet port connects to the working port

3. Control valve according to claim 1 or 2. da- 40 and the vent blocks the pressure of the characterized in that the pressure medium inlet pressure medium inlet opening is exposed.

opening (JIO) in the middle of the bottom and the one such valve is for use as a regulator

Working opening (36) known and spaced from the pressure for compressor unloaders

central inlet opening in the bottom area of the sack serves to switch between fixed

hole (26) are formed and that the 45 set limits of fluctuating pressure, it being of

first piston surface (42) at the bottom end of the vein the pressure to be switched is triggered itself,

tilkolbens (40) and above the level of the second tank truck to be used on the road

Piston surface (44) is protruding. are preferably equipped with valves that turn on

4. Control valve according to claim 2 or 3, that the underside of the tank container are arranged, characterized in that the third piston 50 and through which the tank or the tank compartments of the surface (66) on a fixed with the shaft (45) of the vehicle can be filled or emptied. Valve piston (40) connected to flange (46) Such valves can be designed as conventional, hand-operated is and one end of the spring (48) drawn slide be formed. Such an actuator is supported. Moving the valves by hand is, however, cumbersome

5. Control valve according to claim 4, characterized by 55 and in an emergency may not be fast enough, indicates that in the blind hole (26, for this reason power-operated valves are used) a socket (50) is used, which is preferred on the Ein. An appropriate establishment of this The passage of the blind hole with a ring plate type must meet various safety conditions (51) is completed, which len the spring (48). The bottom valves must be against in every way holds, the bushing by a screw (52) 60 a willful unauthorized or negligent or zuin their position and bores must be secured for conspicuous actuation. Another, very shows what the interior or the interior essential requirement is the backup geoffercn End section of the socket with the option of negligent leaving the valves open.

wise connectable to a pressure medium supply. The known for regulating compressor entrances Opening (60) or the valve used with the venting opening 65 loader is sufficient for this connection (34). Safety requirements and is therefore

6. Control valve according to claim 5, characterized in that the valve control of a tank truck is not suitable indicates that the bush (50) with its in-The invention was therefore based on the object

\ 946

To create a power-operated control valve for the bottom valve control unit 1 "" ^-1 'tank truck by improving the known device, which enables the compressed air supply from the bottom valve to be switched off in various ways, and which in addition to a switching function also has a holding function. To solve this problem, the invention is based on a control valve of the type mentioned at the beginning, which is designed according to the invention so that the valve piston is connected to a manual control device and the force of the spring is greater than the pressure force acting on the first piston surface and long the mil The compressed air base dies first, the opening uflen and the control valve nicni

other <. opening bleed ^ - invention

Further advantages and features, the Lrlimi _fe , result from the claims. ^

η of the ' ¹ ^ f ^ J ^ drawings are shown be ° " ^u » ^lL ^

of the invention, for example, eruuic

It shows _a ßodenvenlilanord-

F. g. 1 s, erti ^ ¹ ^ simplified Darstelnung with Steuei \ _s onientun

lung. ι ■ ih a crfin-

These species reduce the flow of pressure to the Botil to interrupt. The valve piston can be brought back into the closed position by hand

with control valve

_bo denventilanordnung pneumatically betä-

= 1

will. d. H. when the system is vented, closes since <valve according to the invention automatically and sets daivu the connection between the job opening ud the ventilation opening. so that also the Pressure chamber of the bottom valve with the waste opening connected.

In doing so, it is essential for the operation of the starter block ™ to be ^collect ^ ^a ^^ _n ™ „. £ _cnl distant liek» nn to e.nc ^ r xon Jl ^ Boden ^ ^^. _m

the place. ^z , ^B _f . '". T ^ cupboard be arranged. Driving housing is located Se ^" ^lk - ^ _{with cincm}

^^^ ^Λ ^ tZ ^ 14 fst a compressed air source can be connected via the i · „„ 1 »nn. To line 18 to a ^ Urucku q _{cheni welchcs}

Pressure medium inlet opening is made, also immediately after lifting both Ko benflächen are acted upon by the pressure from the opening. As a result, in the case of the invention Valve in a relatively simple manner the desired one Switching and stopping point on realized. where the pressure acting on the valve, m, is essential constant, st and the switching process is not triggered by the pressure to be switched itself. D c Dimensioning of the piston surface and the spring can be coordinated so that the operation of the Valve only small forces are to be applied., Whereby the operation is simplified even in such cases in which considerable operating pressures must be controlled with the valve

Vogesehen In a further embodiment of the invention .st that the piston of the control valve, a third of the harvest and the second piston area en.gegengerichtete piston surface that is greater than the first co Λ- benfläche, and the blind hole "nehmter this piston surface lying optionally on eme Pressure medium supply can be attached (opening has an opening). This feature gives the valve a further possibility of _{resetting, which can also be used for remote actuation}

st ^ erblock forming control valves 14 of the Leitune 18. which in one! ends. With a certain ^^^^ "heat development in the BeA" ^s measure ubcrschr < ^ _certain 22,

«, Cho ... ^ U v ^ m _{Atmusphärc is} vented.

so that the line 1 _hcrun ^l _{til for} all too

Since valves 1 2 «« _hear control valves 14.

em cn tax rbU ^ c £ _{n for a} " _e tax

^ b "w.rück ü. _effective

cr% e .Ie 14 ernes J _{has a valve size} .

The Sttuc vent, 1 K ^ _Indian blind hole

House 2 on J _{26 is from the} entrance

26 ninemluriri. υ ^ ^^. ^^ _{Längc fJurch eme}

_Concentrated cylindrical bore 28 widened. ^ ^zc ™ _the ^y _{blind hole} 26 is a first, offArnBoae η ^u _{di blind} hole 26 with

"^ ^{30 a} f | f ^ _n J, _t , _at which the line 18 anunern K w 1 JZ _{inner endcs of the adults} .

chh cßL Uj. Area ₃₄ ^.

^ Bore ^^ _Cehäusc ^ to _Atm0 .

hen to the _{following M.}

spl are »"" ^renu . . _d hole 26 is also e.ne

third

dTe venting of the bottom valve enables second The surface of the control valve piston

_d g

^ ⁿ J _in ^J _through | _{Connect to} channel 38,

? ^{BodLventl110 leading c g}

_{28 of the} valve 14 is a valve

F ^ opening 30 closes. The area 42, st

surrounded by a concentric area 44, which Hine embodiment of the invention is pressure-free when the opening 30 is closed. This shows I · "i g. 3. in the one corresponding to Γ i g. 1 second area 44, which is larger than area 42, is parts with the same references below same direction as this turned. On the gung an apostrophe are indicated. In this image 45 of the piston 40 is also a flange 46 5 order is an additional one for each control valve 14 ' attached, on which the one F. end of a spring 48 remote or emergency release valve 15 is provided, the supports. The other F.ndc of the spring 48 is connected by a line 13 with the corresponding Slcucincr Sleeve or bushing 50 held, which is connected in the Bob-crvcntil 14 '. The valve 15 corresponds tion 28 is used and at the entrance of the bore essentially the valve 20, but it is so 28 is closed by an annular plate 51. which is connected to the io that line 13 is normally Spring 48 holds. The socket 50 is in turn in the pressure-free.

Bore held by the head of a screw 52. The line 13 is connected to an opening 60 of the valve

The socket 50 is connected with the screw 52 against a bore 28. In the area of the opening

Seal 54 pressed, the sleeve 50 is formed with an annular groove 62 on the heel between 60,

the holes 26 and 28 is located. The socket 50 is 15 through holes 64 with the interior of the

connected on its outer jacket with an annular groove 56 vcr- sleeve. Usually the line is

see, into the bores 58 13 from the inside of the bushing and thus also the one above the flange 46

flow out. Part of the interior of the sleeve 50 to the atmosphere

When the first opening 30 is closed (see FIG. 2), the sphere is connected. The flange 46 becomes too tight the third opening 36 with the second 20 scm purpose is guided tightly in the sleeve 50. After öff - () ffining 34 connected. The valve piston 40 is to the opening of the valve 14, i.e. lifting of the surface 42 for this purpose constricted behind the surface 44, so by the opening 30 and an associated one that the connection from the opening 36 to the opening of the associated bottom valve 10 'can open 34 via the constricted part of the piston 40, the valve 14 is thereby brought to close again inner opening of the socket 50, the bore 58 and 25, which by actuating the valve 15, the Lcidic Groove 56 goes to opening 34. The valve 14 becomes device 13 with the connecting line 17 for pressure thereby kept closed so that the force of the air source is connected. Got that way The 48 greater than that on the surface 42 of the er pressure via the line 13, the opening 60 and the Most opening 30 is her acting pressure force. The Fc bores 62 in the Invicnraum the sleeve 50 and however, the 48 is chosen so that its force is less 30 on a surface 66, the surfaces 42 and 44 than the pressure is. which is opposite from the compressed air to the surface. The surface 66 is essentially 42 and 44 can be exercised together. chcn as large as the area 44, so that the Therefore, when the surface 66 is actuated, the piston 40 becomes pressurized along with the force Handle 16 is lifted from the opening 30 so that the spring 48 is able to move the valve body 40 into the compressed air not only acts on the surface 42, but also moves it back to the closed position. This results in that also on the surface 44. If the piston 40 is a further restoring possibility for the Steuwcit enough in the illustration of FIG. 2 upwards valve 14.

pulled, the connection between the open- The surface 42 is (see Fig. 2) on a cylindrical

opening 36 and the opening 34 are interrupted because the threshing part is formed axially out of the plane

the flange of the valve piston 40 40 of the surface 44 supporting the surface 44 jumps out. The surface 44 rests on

lies against the seal 54. The valve piston 40 also in this way when the valve is in the closed position

remains in this position as long as the pressure from a small distance above the bottom of the bore 26,

the opening 30 acts. The grain from the opening 30 - with the opening 36 directly at the bottom -

Mendc pressure goes through the bore 26. the opening space and therefore also to the in the FIG. 2 under the

36 and the bore 38 adjoins the line 12 and 45 surface 44 lying space,

the opening of the bottom valve 20 acts. The valves 20 or 20 ', 14 and 15 can thus

The closure of the bottom valve 10 will, for example, be arranged in such a way that negligent opening of the

achieved by that by means of the valve 20 the line floor venule 10 can be avoided in any case

18 separated from the compressed air source and vented. For example, the valves 14 can be in a "

will. The pressure 50 acting on the surfaces 42 and 44 cabinet, its door or flap

then drops to atmospheric pressure, so that the handles 16 in the closed position when closing

Spring 48 presses surface 42 against opening 30. brings. Another possibility is to use di <

The same process occurs. when the fuse actuation of the main valve 20 with another

Fuse 22 melts and the pressure in line 32 when driving a tanker truck to be exercised radio

so that it practically drops to atmospheric pressure. 55 tion to connect. The valves 15 are used for single

Furthermore, the actuation of the respectively assigned valves 14 'acting on the surfaces 42 and 44 can be reversed

Manual pressure by actuating the valve piston can be applied to or on the tanker as required

be overcome by means of the handle 16. be ordered.

1 sheet of drawings

Claims (1)

1 2 at the end of a seal (54) against a ring patent claim: shoulder holds against which, from the inner end of the blind hole (26) when the 1. Control valve for the bottom valve control valve puts a flange on its to the inner in the case of tank trucks, the side of which faces the end of the blind hole and the second surface (44) Valve chamber is formed with one on its interior, the pressure medium inlet opening Ren end opening Druckmitteleinlaßöffniing,? 30) and the working opening (36) on the inner a working opening and a vent side and the vent opening (34) and the connection is connected and which has a valve piston optionally to a pressure medium supply, the opening (60) on the outer side, which can be closed by a spring in an end position development is biased, in which the valve piston are the seal and the third surface tra-pressure medium inlet opening blocks and a verging flange (46) of the valve piston (40) the connection between the working opening and the ventilation opening of the optionally to one Leaves vent opening open, the piston pressure medium supply connectable opening two different sized, rectified surfaces 15 separates. has, of which the first, the Druckmiiteleinlaßöffnur.s. opposite face constantly
and the second surface only after removing the