DE10140035B4 - Control fitting for fluids for influencing and eliminating the volume flow in a pipe as required - Google Patents

Abstract

Stellarmatur (10) for fluids for influencing and on-demand prevention of the volume flow in a line, with a housing (16), a throttle body (14), a shaft (12), the one end at least indirectly with the throttle body (14) - first Connecting member - and on the other hand at least indirectly with a drive device (62, 82) - second connecting member - is connected via first and second connecting means, via the shaft (12), the first connecting member (14) between an open position and a closed position is movable, and the first and second connecting means engage over the end face (32) of the shaft (12), characterized in that the first connecting means comprise pins (30) arranged parallel to the longitudinal axis (20) and the second connecting means comprise screws (36) the transmission of tangential and radial forces between the connecting member (14, 62, 82) and the shaft (12) takes place.

Description

The The invention relates to a control valve for fluids for influencing and, if necessary, inhibiting the volume flow in a pipe according to the Preamble of claim 1 specified type.

such Stellarmaturen are known in a variety of designs. you will be in terms of their function in shut-off valves, control valves and safety fittings divided. Prevent the shut-off valves if necessary, the flow a fluid in a conduit. They have to shut tight and so on close, that the speed does not abruptly zero, to shock loads to avoid. The control valves should be the volume flow in dependence of a regulated size. The safety fittings give a cross section for impermissible overpressure free for pressure relief.

such Stellarmaturen have a housing on, in which a throttle body is stored. A shaft connects the throttle body - first connecting member - with a Drive device - second Connecting element -, with the shaft on one side with the throttle body and on the other side is connected to the drive device. About the shaft, the driving forces to open and Shut down the throttle body, So to move the throttle body between an opening and a closed position, transferred.

The Wave must be as possible play free with both the throttle body and with the drive device be connected as much as possible precise Perform adjusting movements to be able to. In this respect, the connection of shaft and throttle body is on one side and the connection of shaft and drive device On the other hand, special attention is paid to the design give.

It is known in control valves and swiveling throttle bodies, the Connection of the shaft to the throttle body in the form of a splined shaft profile train. This splined shaft profile enables a backlash-free connection and a simple installation. However, the problem is the production of such a spline profile, as in control valves, for high temperatures are designed, the material of the throttle body is very hard. It is therefore necessary to have the corresponding spline profile in the throttle body to bring in by Erudieren, which is extremely expensive.

The Connection of the shaft with an actuator is usually done via a Adjusting spring. The introduction of a corresponding groove in the shaft is also expensive, since the shaft according to the intended Position of the key must be aligned exactly to the tool.

In addition, the reveals DE 696 22 334 T2 a positive connection at the end face of the shaft with a connecting member, wherein the tangential and radial forces are transmitted by means of a groove and a web. This embodiment has the disadvantage that the production is relatively expensive.

Of the Invention is based on the object, a control valve for fluids for influencing and eliminating the volume flow as required in a line according to the Preamble of claim 1 specified type such educate that while avoiding the mentioned disadvantages with simple means the connection of the shaft with at least one associated connection member is simplified.

These The object is achieved by the characterizing parts of claim 1 in Connection with its generic features solved.

The under claims form advantageous developments of the invention.

Of the The invention is based on the finding that by providing Connecting means between the connecting member and the shaft the front of the shaft, the production of the shaft considerably simplify.

To According to the invention, the connecting means comprise at least a pin-shaped first Means, such as pins, to transfer of tangential and radial forces between the shaft and the connecting element. The longitudinal axes of the pins and the Wave lie parallel to each other. In particular, the tangential and radial forces exclusively transmitted through the pins.

The pin-shaped Connection allows a low-effort and cost-effective Manufacture of valves, while still ensuring full functionality is.

By the transfer the tangential and radial forces by means of pins, it is possible To use very hard materials, such as holes even in very hard material are easily introduced.

The Connecting means are in particular within the radial extent arranged the shell circumference of the shaft. Advantageously, the lie Pins on a circumference around the longitudinal axis of the shaft. The pencils can evenly over the circumference be distributed to the wave.

Around the power transmission between the shaft and the connecting member to improve, lies the shaft with its end face at least partially on the connecting member at least indirectly.

Preferably are the first means with the shaft in the direction of the longitudinal axis the shaft frictionally engaged and in the radial and / or tangential direction of the longitudinal axis the shaft form-fitting connected. As a result, it is now possible that only holes be introduced in the connecting element and in the end face of the shaft have to. The Drilling is also possible with hard materials, such as Stellite, easily possible. Assembly is simplified when the pins are frictionally connected to the shaft are, so that the shaft with the pins only in the assigned Bores must be introduced in the connecting element. Thus, after successful Mounting the first means with the connecting member in the radial and / or tangential direction to the longitudinal axis the shaft form-fitting connected.

It it is necessary that a removal protection is provided, for example ensure that after removing the drive the shaft passes through the internal pressure does not shoot out. So far, it was common in the shaft to introduce a circumferential groove in the after assembly the wave, d. H. after connecting the shaft to the connecting elements, a screw engages.

According to one embodiment According to the invention, the connecting means now comprise second means to transfer from in relation to the longitudinal axis the shaft axial forces th between the shaft and the connecting element. For example, forms one in the longitudinal axis arranged and engaging in the shaft screw the second means. As a result, a removal protection is formed in a simple manner.

According to one embodiment the invention, the connecting member adapted to the shaft Recess, in which the shaft engages at least partially. This allows personnel and transmit torques better be and the shaft is partially connected when connecting to the connecting member guided, whereby the assembly is facilitated.

to Further simplifying the manufacturing process is the shaft with one over theirs Length consistent Cross section provided. The shell side of the shaft can therefore from a Front side to the other end simply machined uniformly become.

Under Another thing about the connection of the shaft with the connection organ on to simplify, in particular to different connection organs Being able to easily connect to the shaft is between the shaft and the connecting member provided at least one intermediate member, with the wave over the Connecting means is connected. The intermediate link is then with connected to the connecting element. For the purposes of the present invention the intermediate link is to be assigned to the connecting element, so that the above given constructive training also on the Pusher apply and the shaft with the connecting organ via Intermediate link is connected.

a considerable manufacturing advantage is offered by the training, at the shaft with respect to a perpendicular to the longitudinal axis the shaft arranged symmetry plane is formed symmetrically. Now you can Both sides of the wave are processed the same, causing the different edits be reduced. This is a considerable savings potential. In addition, now also the connecting means between the shaft and the first connecting member and the shaft and the second connecting member trained accordingly, so also cost savings can be achieved.

Preferably the invention finds application in control valves whose throttle body in shape a folding disc or in the form of a rotary cone is formed. Of course can also other control valves in the manner indicated above be formed.

Around an optimal power transmission to ensure, the shaft and the connecting elements are connected to each other without backlash.

Especially when trained as a rotary cone first connection organs it is necessary that these connecting members have a defined clearance in the housing, so that they are in the closing process can center with respect to a sealing ring. Therefore, it is more common The first connecting member each have a thrust bearing on the the game of the first connecting member is set.

According to one embodiment of the invention, the first connection member is provided on the side remote from the shaft with an axial bearing which is connected in both axial directions with respect to the longitudinal axis of the shaft and which is connected to the housing. Compared to the previous training, in which on each side of the first connection member an effective axial direction is provided in a direction, now the distance between the effective in the respective direction thrust bearing is considerably shorter. This has the advantage that only a small clearance of the first connecting member in the housing is necessary because the thermal expansion of the first connecting member over this short distance less impact. Furthermore, the housing only has to be processed on one side.

Further Advantages and embodiments will become apparent from the following description an embodiment the invention in conjunction with the drawing. Show it:

1 a vertical section through a control valve according to an embodiment of the invention;

2 a cross section according to the line II-II of 1 through the control armature; and

3 a longitudinal section along the line III-III of 1 through the control armature.

In 1 is a control armature in a vertical section 10 with a wave 12 and a throttle body 14 shown. The throttle body 14 is designed as a rotary cone and forms with respect to the shaft 12 a first connecting member.

In a housing 16 is the wave 12 over bearing rings 18 rotatable about its longitudinal axis 20 stored.

The control armature 10 is with regard to the arrow 22 marked flow direction shown in the closed position. In this respect, the rotary cone is 14 on a sealing and seat ring 24 on, with the case 16 is screwed. The housing 16 is over his flanges 16a and 16b connected to a line, not shown here for a fluid.

The wave 12 is with the turntable 14 over her front page 32 connected. For this purpose, this four points eccentric to the longitudinal axis 20 arranged holes and a concentric to the longitudinal axis 20 arranged threaded hole on. The holes are located within the radial extent of the shell circumference of the shaft 12 ,

In the holes are each pins 30 introduced, which form a frictional connection with their bore and thus are fixed therein. The pencils 30 protrude over the turntable 14 assigned end face 32 the wave 12 out and grab the shaft 12 assigned side of the turntable 14 in the turntable 14 introduced holes 34 into it. This is the wave 12 positive fit with regard to the transmission of rotational forces to move the turntable 14 from the in 1 shown closed position in an open position with the rotary cone 14 connected.

To prevent, after removing one at the the front 32 connected to the remote side, in 1 not shown actuator 82 , the wave 12 because of in the case 16 prevailing internal pressure of the fluid moves out, is a blow-out in the form of a tapping into the threaded hole 28 engaging screw 36 intended.

The screw 36 accesses this in a turn in the cone 14 introduced through-hole 38 as well as into the threaded hole 28 in the wave 12 one. For receiving the head of the screw 36 is the through hole 38 on the shaft 12 distant side of the shape of the head of the screw 36 adjusted so that these in the assembled state over the head and their in the shaft 12 engaging portion of the screw 36 the wave 12 firm and free of play with the turning cone 14 combines. The wave 12 lies with its front side on the rotary cone 14 at.

There is also a recess 40 on the front side 32 facing side of the turntable 14 provided to the shaft 12 is adjusted and in which the wave 12 intervenes. This ensures that the forces optimally between shaft 12 and rotary cone 14 be transmitted.

The turning cone 14 is on the shaft 12 remote side with a thrust bearing 42 provided in both axial directions of the longitudinal and thus axis of rotation 20 the control valve 10 is effective.

The thrust bearing 42 consists of a lower bearing 44 as well as through the turntable 14 sweeping and into the lower camp 44 engaging upper bearing insert 46 , The upper bearing insert 46 has a shoulder 48 up on a suitably shoulder 48 assigned paragraph 50 of the turntable 14 rests. Thus the upper bearing insert 46 the turntable 14 can pass through is a hole 52 provided in which the upper bearing insert 46 is introduced.

For engaging the upper bearing insert 46 in the lower camp 44 is a recess 54 in the lower camp 44 placed at the upper bearing insert 46 is adjusted.

About a screw 56 is the upper bearing insert 46 firmly with the lower bearing 44 connected. As anti-rotation is also a bore 58 with pen 60 intended. Because the screw 56 additionally in the housing 16 engages, is thus a fixed axial fixation of the rotary cone 14 given. The turntable 14 thus rotates about the upper bearing insert 46 as well as on the lower camp 44 around the longitudinal axis 20 the wave 12 ,

The sealing and seat ring 24 is with holes 70 provided, which are parallel to the flow direction 22 are introduced and extend radially, so that the sealing and seat ring 24 can be aligned during assembly. Between housing 16 and sealing and seat ring 24 is a spacer 72 introduced, over the thickness of the distance of the sealing surface 74 to the turntable 14 is set to an optimum seal in the closed position of the rotary plug 14 to obtain.

Into the hole 70 of the sealing and seat ring 24 , in corresponding holes in the spacer 72 and into corresponding threaded holes in the housing 16 grab screws 76 a, over which the sealing and seat ring 24 opposite the rotary cone 14 in the case 16 is attached.

The sealing and seat ring 24 is formed as a turned part of a metal alloy and engages in a recess 78 of the housing 16 a, which is designed so that the sealing and seat ring 24 can be adjusted radially. The screws 76 are completely in the sealing and seat ring 24 sunk. The housing 16 and perpendicular to the direction of flow 22 running front side 80 form a substantially closed area without paragraphs.

By the formation of the sealing phase 74 as part of the seat ring 24 the assembly can be considerably simplified. It is also about spacers 72 the distance of the seat ring 24 to the turntable 14 easy and fast adjustable, even if the sealing and seat ring 24 must be replaced.

In 2 is a section according to the line II-II of 1 shown. Here is clearly the turning cone 14 with his on the front 32 the wave 12 associated side provided recess 40 , the four pins 30 associated holes 26 as well as concentric to the longitudinal axis and thus to the axis of rotation 20 the wave 12 introduced through hole 38 recognizable, in which the screw 36 intervenes.

In 3 is a section along the line III-III of 1 shown. This illustration essentially shows the features already associated with 1 were mentioned. In addition, at the turning cone 14 remote side of the shaft 12 an intermediate link 62 intended. The intermediate link 62 is the same as the turntable 14 about pins 30 and a screw 36 with the wave 12 connected, for which a corresponding hole 64 and a through hole 66 in the intermediate link 62 is provided. To the intermediate link 62 becomes the actuator 82 connected. A recording 68 for the actuator is with the housing 16 connected.

The wave 12 Thus, each end is connected to a connecting member, on one side with the rotary cone 14 and on the other side with the link 62 , which is part of the drive device. The production simplifies considerably as a result, because of the symmetrical design of the shaft 12 and the frontally provided holes a simple editing is guaranteed.

As stated above, reduced by the thrust bearing 42 that on the shaft 12 remote side of the rotary cone 14 is provided, the influence of thermal expansion. This can be the game of the turntable 14 opposite the housing 16 and thus with respect to the seat and sealing ring 24 be lower.

Due to the one-piece design of the seat and sealing ring 24 In addition, the assembly is also considerably simplified. The necessary for the tightness in the closed position distance to the rotary cone 14 can here by distance and sealing disks 72 between the seat and sealing ring 24 and housing 16 are introduced, are set and the radial orientation of the seat ring 24 opposite the dome of the turntable 14 over the correspondingly formed recesses 70 ,

The Invention is characterized in that now a simple Guaranteed production and installation with simple means becomes.

10

positioning device

12

wave

14

reamer

16

casing

16a, b

flanges for connection to a cable

18

bearing ring

20

longitudinal axis the wave

22

Flow direction

24

sealants and seat ring

30

pencils

32

front the wave

34

drilling

36

screw

38

Through Hole

40

recess

42

thrust

44

lower camp

46

upper bearing insert

48

shoulder

50

paragraph

52

drilling

54

recess

56

screw

58

drilling

60

pen

62

intermediary

64

drilling

66

Through Hole

68

admission for the actuator

70

drilling of the sealing and seat ring

72

Distance- and sealing washer

74

sealing surface

76

screw

78

recess

80

front

82

actuator

Claims (13)

Control armature ( 10 ) for fluids for influencing and eliminating as required the volume flow in a line, with a housing ( 16 ), a throttle body ( 14 ), a wave ( 12 ), the one end at least indirectly with the throttle body ( 14 ) - First connecting member - and on the other hand at least indirectly with a drive device ( 62 . 82 ) - second connecting member - is connected via first and second connecting means, wherein over the shaft ( 12 ) the first connecting member ( 14 ) is movable between an open position and a closed position, and the first and second connecting means on the front side ( 32 ) the wave ( 12 ) engage in these, characterized in that the first connecting means parallel to the longitudinal axis ( 20 ) arranged pins ( 30 ) and the second connecting means screws ( 36 ), by which the transmission of tangential and radial forces between the connecting element ( 14 . 62 . 82 ) and the wave ( 12 ) he follows. Control fitting according to claim 1, characterized in that the pins ( 30 ) and screws ( 36 ) within the radial extent of the shell periphery of the shaft ( 12 ) are arranged. Control fitting according to claim 1 or 2, characterized in that the shaft ( 12 ) with its front side ( 32 ) at least partially on the connecting member ( 14 ; 62 ; 82 ) at least indirectly. Control fitting according to one of the preceding claims, characterized in that the pins ( 30 ) on the same circumference around the longitudinal axis ( 20 ) are arranged. Control fitting according to one of the preceding claims, characterized in that the pins ( 30 ) with the wave ( 12 ) in the direction of the longitudinal axis ( 20 ) frictionally and in the radial and / or tangential direction of the longitudinal axis ( 20 ) the wave ( 12 ) are positively connected. Control fitting according to one of the preceding claims, characterized in that the pins ( 30 ) with the connecting member ( 14 ; 62 ; 82 ) in radial and / or tangential direction to the longitudinal axis ( 20 ) the wave ( 12 ) are positively connected. Control fitting according to one of the preceding claims, characterized in that the connecting member ( 14 ; 62 ; 82 ) one of the wave ( 12 ) adapted recess ( 40 ) into which the shaft ( 12 ) at least partially intervenes. Control fitting according to one of the preceding claims, characterized in that the shaft ( 12 ) is provided over its length with a constant cross-section. Control fitting according to one of the preceding claims, characterized in that between the shaft ( 12 ) and a connecting member ( 82 ) at least one intermediate member ( 62 ) is provided, with which the shaft ( 12 ) over the pins ( 30 ) and screws ( 36 ), wherein the intermediate member ( 62 ) with the connecting member ( 82 ) connected is. Control fitting according to one of the preceding claims, characterized in that the shaft ( 12 ) with respect to a perpendicular to the longitudinal axis ( 20 ) the wave ( 12 ) arranged symmetry plane is formed symmetrically. Stellarmatur according to any one of the preceding claims, characterized in that the first connecting member ( 14 ) is formed by a rotary flap or a rotary cone. Control fitting according to one of the preceding claims, characterized in that the shaft ( 12 ) and the connecting organs ( 14 ; 62 ; 82 ) are connected to each other without clearance. Stellarmatur according to any one of the preceding claims, characterized in that the first connecting member ( 14 ) on the shaft ( 12 ) away in both axial directions with respect to the longitudinal axis (FIG. 20 ) the wave ( 12 ) effective thrust bearing ( 42 ), which is connected to the housing ( 16 ) connected is.