FR2500906A1 - THREADED CONNECTION FOR A VALVE, ESPECIALLY A RADIATOR VALVE - Google Patents

Abstract

THREADED FITTING FOR A VALVE CONTAINING A BODY 1 WHICH IS EQUIPPED WITH AN EXTERNAL THREAD 3 AT ONE END AND AT THE OTHER END OF A SNAP SECTION 4 WITH AN ANNULAR STOP SURFACE 5 PROJECTING IN RELATION TO THE DIAMETER OF THE THREAD; ITS PASSAGE CHANNEL INCLUDES AN ADJUSTABLE THROTTLE ELEMENT 11 COUPLING TO AN ACTUATOR 12; BETWEEN THE EXTERNAL THREAD 3 AND THE FITTING SECTION 4 IN THE BODY 1 IS AN ADJUSTMENT OPENING GIVING ACCESS TO THE THREADING ELEMENT FOR MOVING IT AND INSULATED TIGHTLY BY MEANS OF A SEALING DEVICE 16, 17; PREFERABLY THE ACTUATOR 12 IS LOCATED INSIDE THE DIAMETER OF THE THREAD 3.

Description

Threaded connection for a valve,

including a radiator valve.

  The invention relates to a threaded connection for a van-

  ne, in particular a radiator valve, comprising a body which includes a passage channel, an external thread at

  one end, and at the other end a nested section

  table having an annular abutment surface making

  protrusion from the diameter of the thread.

  Such threaded connections are generally known.

  They are screwed, by means of the external thread, into a neighboring part, for example a tubular pipe, and are coupled to a valve connection via

  a coupling nut engaging the em-

limp.

  There is also known (German patent 894 180) a radiator valve which has a built-in throttling element, with the aid of which the flow resistance can be adjusted when the valve is fully open.

  so that in the case of branched tubular lines

  the branch with this valve receives the amount

  desired amount of heating liquid. The element of foreign-

  regulation has two cylindrical pins which

  tightly engage in corresponding openings

  of the valve housing. One of the pins has two holes for the installation of a tool so as to

  ability to adjust throttle element from outside.

  So you can also choose the optimal setting for operation after installation. However, such a valve is expensive due to the possibility of presetting.

additional.

  In many cases, but not all,

  all it takes is a less expensive valve without a

  choke for the preset. Valve manufacturers are therefore obliged to manufacture and hold two different types of valves in reserve. Added to this is the fact that valves with presetting are frequently slightly larger than valves without presetting, so that their mounting poses difficulties for

reasons for congestion.

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  The invention proposes to provide a means for allowing

  be a rational manufacture of valves, whether with or without presetting, and so as not to require a larger installation space when using a presetting. This problem is solved according to the invention thanks to the

  the fact that the threaded connection has a sealing element

  adjustable regulation coupled to an actuating member and

  placed in the passage channel, an adjustment opening arranged in the body between the external thread and the interlocking section and by means of which there is access to the throttling element to move it, and a device for tightly insulating seal this

  adjustment opening of the passage channel.

  Now it is possible to manufacture a type of valve without presetting in large series and therefore at low cost and to keep them in reserve. If you want to have a valve without presetting, use the normal threaded connection; if you want to have a valve with

  presetting the threaded connection according to the invention is used

  tion. The dimensions are practically the same for both versions. Since the dimensions of the new threaded connection can correspond to those of a normal threaded connection, it is also possible to transform an installation without existing presetting in a simple and inexpensive way into an installation with the possibility of presetting. Since such means have not been changed for several decades, this is

  also possible in very old installations.

  -30 The special position of the adjustment opening allows

  also adjust the throttle when the

  threaded cord is incorporated in a fixed manner, so when its two end parts are not accessible,

  It is particularly advantageous for the

  be placed inside the diameter of the file-

  floor. In this way, the coupling nut can be threaded in place as in the case of a normal threaded connection, and it is therefore not necessary to place it on the new threaded connection during the manufacture of this one. In a preferred embodiment, the body of the threaded connector has a transverse wall with a fixed passage opening arranged eccentrically, and

  an inserted part that can rotate coaxially with respect

  port to the axis of the threaded connection comprises, as

  constriction, a front wall resting on the transverse wall and comprising a rotary passage opening cooperating with the fixed passage opening, and,

  as an actuator, a significant extension

  clearly cylindrical which has on its outer periphery

  of the profiled parts for the installation of a tool. The front wall forms in cooperation with the transverse wall a rotary drawer in which the two

  passage openings overlap over a different width

  ferent. The cylindrical extension ensures good guidance of the part inserted in the body of the threaded connection. The profiled parts can easily be reached by

  the adjustment opening. Marks on these pro-

  yarns are easy to identify. The manufacturing is by-

  particularly simple when both the fixed passage opening and the rotary passage opening are

  formed by an eccentrically arranged hole. We can however

  dant to use other forms for the openings of passage-

  wise, for example two partial ring-shaped openings. * Advantageously, the profiled parts are mutually spaced by a different distance along the peripheral direction. The result can be obtained in this way which, despite the non-linear value of such a constriction, the differences between successive setting values correspond respectively to a constant difference in flow when the valve is

completely open.

  Advantageously, the sealing device consists of two sealing rings extending along the periphery of the inserted part and arranged in both.

  sides of the adjustment opening. Since the open-

  adjustment ture may have small dimensions, there is no difficulty in providing these sealing rings for

  two sides of the profiled parts.

  In another embodiment, the throttle element is formed by a transverse wall which can rotate around an axis perpendicular to the axis of the threaded connection.

  In this regard, it is recommended that the action body

  1O ment enters the adjustment opening and comprises on the front side a profiled part for the installation of a tool, and that the sealing device is formed by a sealing ring which is disposed between a cylindrical section the adjustment opening and a cylindrical section of the actuating member. In this way

  we take into account the requirement that no party be

  ve outside the thread diameter.

  In order to be able to accommodate the actuator conveniently in this way, it is recommended that the transverse-rotating wall cooperates with an axial bore in the body of the threaded connection which extends on the side of the axis of the

  threaded connection opposite the adjustment opening.

  In addition, it is possible that the choke element -

  ment has a position in which the passage channel

  ge is completely closed. We can therefore also

  block the corresponding valve connection.

  The present invention will be better understood using

  of the following description of several embodiments

  tion preferred but not limiting shown in the accompanying drawings in which Figure 1 is a longitudinal sectional view of a first embodiment of a threaded connector according to the invention; Figure 2 is a plan view of the threaded connection of Figure 1, on a smaller scale; Figure 3 is a sectional view along the line III-III of Figure 2; Figure 4 is a longitudinal sectional view of a second embodiment; and Figure 5 is a longitudinal sectional view of a

third embodiment.

  The threaded connection of FIGS. 1 to 3 comprises a body 1 having a hollow space 2 serving as a passage channel,

  an external thread 3 and a nestable section 4 comprises

  both an annular abutment surface 5 which projects by

  relative to the diameter of the external bore 3. In the sec-

  There is a hexagon socket screw 6 of

  1o so that the threaded connection comprising the external thread

  laughing. can be screwed into the internal thread of a neighboring part. The nestable section is intended to be nested in the fitting of a valve, the two parts

  being joined by a coupling nut including a glue

  the inner rim rests on the abutment surface

  re 5. The body 1 also comprises a transverse wall 7 provided with an eccentric passage opening 8 constituted

  through a hole. In addition, an adjustment opening 9 is pre-

view of the periphery.

  In the hollow space 2 is housed an inserted part 10 which is constituted by a throttling element 11 and an actuating member 12. The throttling element 11 is

  formed by a front wall provided with a passage opening

  eccentric sage 32 constituted by a hole, and the actuating member is formed by a cylindrical extension having axial grooves on its periphery as

  that profiled parts 13 with which can come in pri-

  is a tool 14. The inserted part is held against the transverse wall 7 by a clamping plate 15. On both sides of the adjustment opening 9 is respectively provided a sealing ring 16 or 17 with a ring

associated support 18 or 19.

  The tool 14 shown in FIG. 3 is a wrench with a curved head 20 and a radial tooth 21 which can engage through the adjustment opening 9 in one of the profiled parts 13. If the tool 14 is pivoted in pressing it on the body 1, the inserted part 10 rotates, the opening

  rotating passage 32 more or less covering

   0906 -6- with the passage opening 8. The profiled parts 13 are mutually spaced apart by a different distance in the peripheral direction. In this way, the angle of rotation is obtained, until the end surface 22 of the adjustment opening 9 is reached when

  the first installation of the tool 14, as shown

  t, is maximum and decreases with each subsequent use of the tool. Consequently, each adjustment using the tool varies the flow in a definite and yet respectively constant manner when the valve

  is completely open. In addition, on the body of the rac-

  threaded cord is provided a mark 23 which cooperates with a

  mafque 24 on the inserted part 10 to allow a read

  corresponding ture of the chosen setting.

  The overall dimensions of the body 1 of the threaded connection

  correspond to those of a normal threaded connection.

  In the embodiment of FIG. 4, we use

  se of the references increased by 100 for the elements cor-

  respondents. In the body 101 a longitudinal bore 125 is provided outside the axis of the fitting. In addition, it has a hole 126 perpendicular to the hole 125 and of which

  the upper end forms the adjustment opening 109.

  An inserted part 110 is inserted radially into the bore 126 and is held in an annular groove 128 by elastic fingers 127. The inserted part 110

  consists of a throttle element 111 pre-

  sensing in the form of a rectangular wall extending radially with respect to the axis of the bore 126 and by an actuating member 112 located in the opening of

  adjustment 109 and provided with a profiled part 113 is present

  both in the form of a hexagon socket screw to engage with a tool. A sealing ring 116 is disposed between a cylindrical section 129 of the bore 126

  and a cylindrical section 130 of the actuating member.

  The band-shaped throttle element 111 can include

  ter below a guide disc 131.

  In this embodiment, in the position shown

  felt, throttle element 111 blocks passage

C 0906

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  in the threaded connection. By rotating the actuator

  With valve 112, the throttle element can be brought into arbitrary angular positions until it clears the maximum cross section of the axial bore 125 in a position parallel to the axis of the threaded connection.

  In the embodiment of FIG. 5, one uses

  se of the references increased by 200 for elements cor-

  respondents. In this case, the throttling element 211 is formed by a circular disc which carries on its edge a sealing ring 232 and which is rigidly mounted on an axis 233 of an actuating member 212. The axis 233 forms an acute angle with respect to the perpendicular to the axis of the body. The throttling element 211 is fixed on the axis 233 by being offset by the same angle. A rotation of 1800 of the actuating member therefore closes the hole 225 in a sealed manner. Adjustment in intermediate positions provides different passage sections. The material of the body of the threaded connection is for example brass. Throttling elements can also

  be of brass or other metal. However, we can also

  also use plastic bodies

C-0906

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Claims (10)

Claims   1. Threaded connection for a valve, in particular a radiator valve, comprising a body which includes a channel for   passage, an external thread at one end, and at the   be at the end a embolizable section comprising a surface   this annular abutment projecting with respect to the diameter of the thread, characterized in that it comprises an adjustable throttling element (11; 111; 211) coupled to an actuating member (12; 112; 212) and arranged in the passage channel, an adjustment opening (9; 109; 209) disposed in the body (1; 101; 201) between it   external thread (3; 103; 203) and the fitting section   ble (4; 104; 204) and through which there is access to the throttling element to move it, and a sealing device (16, '17; 116; 216) sealingly insulates this adjustment opening of the passage channel. 2. Connection according to claim 1, characterized in that the actuating member (12; 112; 212) is   arranged inside the diameter of the thread.   3. Connection according to claim 1 or 2,   characterized in that the body (1) of the threaded connection comprises   carries a transverse wall (7) with an opening so that a fixed passage (8) disposed eccentrically, and in / inserted part (10) which can rotate coaxially with respect to   the axis of the threaded connection comprises, -, as a component of   glement (11), a front wall resting on the wall   transverse and having a round passage opening   web (32) cooperating with the fixed passage opening, and,   as an actuator (12), an extension   so cylindrical that has on its outer periphery   lower sections (13) for the establishment of a tool.   4. Connection according to claim 3, characterized in that both the fixed passage opening (8) that the rotary passage opening (32) are formed by a eccentric hole.   5. Connection according to claim 3 or 4, -9-   characterized in that the profiled parts (13) are mutually   spaced apart by a different distance depending on the peripheral direction.   6. Connection according to any one of the claims   3 to 5, characterized in that the sealing device   (16, 17) consists of two sealing rings   tending along the periphery of the inserted part (10) and   arranged on both sides of the adjustment opening (9).   7. Connection according to claim 1 or 2, characterized in that the throttling element (111, 211) is a transverse wall which can rotate around a   axis perpendicular to the axis of the fitting.   8. Connection according to claim 7, characterized in that the actuating member (112; 212) penetrates into   the adjustment opening (109; 209) and comprises front-   ment a profiled part (113; 213) for the installation of a tool, and that the sealing device (216; 116)   is formed by a sealing ring which is arranged in   be a cylindrical section (129; 229) of the adjustment opening and a cylindrical section (130; 230) of the actuating member. 9. A connector according to claim 8, characterized in that the rotating transverse wall cooperates with an axial bore (125; 22ef) of the body of the threaded connector which extends on the side of the axis of the connector which is opposite to the adjustment opening (109; 209).   10. Connection according to any one of the claims   1 to 9, characterized in that the throttle element (211) has a position in which the passage channel is completely closed.