FR2569458A1 - DEFORMABLE SLEEVE VALVE - Google Patents

Abstract

THE INVENTION CONCERNS A DEFORMABLE SLEEVE VALVE TAP, WITH A BOX1 CONTAINING TWO HOLES2, 3 T-SHAPED, THE FIRST HOLE2 FORMING THE CROSSBAR OF THE T THROUGH THE BOX1 AND OPENING ON THE OPPOSITE SIDES OF THE BOX4, 5. THE TAP VALVE ALSO INCLUDES AN ELASTIC SLEEVE THAT CAN BE CLAMP6 AND A DISCHARGE VALVE16 HOUSED IN THE SECOND HOLE3 ENDING IN THE FIRST2. IN ORDER TO BE ABLE TO PINCH THE SLEEVE6, THE DISCHARGE VALVE CAN MOVE IN THE AXIAL DIRECTION BETWEEN TWO FINAL POSITIONS, THE SLEEVE6 NOT BEING PINCHED IN THE FIRST FINAL POSITION, AND BEING TOTALLY CLAMPED IN THE SECOND FINAL POSITION. THE DISCHARGE VALVE16 IS CONNECTED TO AN ADJUSTING DEVICE54 FOR ADJUSTING THE FLOW OF A MEDIUM FLOWING IN THE SLEEVE. THIS DEVICE INCLUDES LOCKING ELEMENTS30, 37 INTERMITTING ONE INTO THE OTHER, AND SERVING TO ADJUST AND DETERMINE AT WILL CERTAIN INTERMEDIATE DISCREET POSITIONS BETWEEN THESE TWO FINAL POSITIONS.

Description

DEFORMABLE SLEEVE VALVE

  The invention relates to a gate valve

  deformable comprising a housing having two dis-

  installed in T, the first of which forms the transverse bar of the T passing through the housing, and opening on the sides

  opposite of the shoemaker, and contains a deformable sleeve for

  before being pinched; it also includes a discharge valve.

  placed in the second hole opening into the first, which valve can be moved between two end positions, in the axial direction, in order to modify the pinching of the sleeve, the latter not being pinched at all in position

  final 1, and being fully pinched in final position 2.

  A gate valve of this type is used to stop

  if need be as quickly as possible the flow of

  lement-a medium in a sleeve. The second hole, in which the discharge valve is placed, generally has on the lathe a spiral-shaped groove in which fits an extension placed on the discharge valve.

  repression. The outer end of the discharge valve

  Lement protrudes from the second hole, above the housing, and is connected to a small angled actuating branch. In

  writhing about 900 by means of the action branch-

  In addition, the discharge valve advances in the direction of the sleeve thanks to the combined action of the extension and the circumferential groove, and completely disconnects this

  muff. In order to ensure good support in both positions

  end, the two ends of the circumferential groove

  are bent at right angles to the axis of the hole, so that the elastic back pressure of the sleeve in the final positions does not cause any untimely automatic adjustment of the discharge valve. An intermediate position of the discharge valve causing partial pinching of the sleeve is not provided and is only difficult to achieve, because by the back pressure exerted by the sleeve on the discharge valve in the intermediate positions of the latter , a force is exerted on the extension, the component of which, directed in the longitudinal direction of the circumferential groove, automatically twists the discharge valve. It is therefore difficult, if not impossible, to reproduce

  exactly a partial pinch due to an intermediate position

diameter of the discharge valve.

  The objective of the present invention is therefore to remedy

  Dier these drawbacks by proposing a deformable sleeve gate valve allowing variable adjustment of the flow rate of the medium flowing in the sleeve, the discharge valve causing the constriction can be fixed

  in discrete positions between its two final positions

  the, and the different degrees of strangulation being repro-

ductible at will.

  The present invention achieves this in so far as the discharge valve is connected to an adjustment device making it possible to adjust the flow rate of the medium, and o this adjusting device making it possible to carry out the adjustment and to determine at will certain discrete intermediate positions between the two end positions contain locking elements which fit together in a mobile manner. This makes it possible to use the deformable sleeve gate valve as a butterfly valve whose

  different throttling positions can be determined

  born at will. This has the advantage that each adjustable degree of throttling can be reproduced at any time, each engaged throttle position defining

  exactly a certain intensity of strangulation.

  If the adjuster has a display unit, such as a scale and a needle, it is easy to reproduce a throttling position

  previously settled. If the adjuster includes

  blocking elements relatively movable relative to each other and fitting into each other

  others, we thus obtain a system for adjusting a structure

  very simple structure offering optimal security against any untimely adjustment. If the two locking elements are pressed against each other by means of a spring, this guarantees a good locking of the two elements with respect to each other, but it also makes it possible to twist the locking elements one over the other without much effort. It is advantageous to fix one of the blocking elements, for example to the shoemaker, and to connect the other

  directly or indirectly at the discharge valve.

  If the movable locking element includes a lever for

  glage ;, this facilitates adjustment. If the adjustment lever pivots around a pivot, the movable blocking element simultaneously performing a similar rotational movement, it may prove advantageous to couple in a very

  simple adjustment lever with locking element.

  Any additional transmission (lever for example) is useless. To obtain a particularly fastening

  on the blocking element on the case, it is advantageous

  geux to use screws, pins, or the like.

  A particularly compact embodiment of the deformable sleeve gate valve is obtained when the two blocking elements are in the form of perforated discs

  arranged one on top of the other coaxially. This realization

  sation is characterized by very low wear. It is

  advantageous than the faces of the perforated discs which are rotated

  born towards each other have teeth which mesh in a complementary manner and prevent the two discs from rotating with respect to each other. To prevent relative movement of the two locking elements, while allowing the two elements to be twisted relative to each other

  to the other without great effort, it is advantageous to cross-

  tighten the two locking elements using a trunnion on a central and coaxial plane, and press the movable locking element against the fixed locking element using a pressure spring placed between the pin and the movable element. Assembly is easily possible if

  the pressure spring is pushed onto a coaxial plane

  above the trunnion, and rests on the side of the trunnion on a fastening element such as a rod, a socket

tightening or whatever.

  Production is inexpensive when all

  rillon is formed by the discharge valve, and protrudes from the housing through the second hole. In order to transmit the movement of the movable blocking element to the movement of the discharge valve, it is advantageous to connect the two elements mechanically, for example using

  a clamping sleeve or a clamping pin.

  A particularly advantageous achievement is obtained

  tagger of the present invention when the discharge valve has an oblong slot oriented in the axial direction and passing through in the radial direction, such as an oblong hole, through which the element of

  fixing, which can be for example a clamping sleeve.

  The width of the oblong slot must be at least equal to the outside diameter of the fixing element; she

  will even preferably be a little higher than the latter.

  But if for example the discharge valve is placed by means of an extension in a circumferential and almost helical groove of the second hole, which means an axial movement for the discharge valve in the event of torsion, the blocking element mobile is certainly still

  mechanically connected to the discharge valve, without

  however, see the axial movement of the discharge valve.

  Another advantageous embodiment of the present invention can be obtained by making on the housing, in the area of the second hole, a slot oriented in the longitudinal direction of the second hole, and passing through the entire housing.

  except one of its outer faces, radially in relation

  port at the second hole, the outlet of the slot and the fixed blocking element being on the same level or at parallel levels. This embodiment has the advantage that an extension disposed on the discharge valve can pass through the oblong slot, an axial displacement

  of the discharge valve also causing displacement

  longitudinal cementation of the extension in the oblong slot.

  Another advantage of this measure is that the discharge valve should not be bent to adjust different throttling positions, but that it is advantageous that a pressure force should be exerted in the axial direction of the valve. discharge only by means of the extension passing through the oblong slot. This is advantageously achieved in that the extension projects beyond the outside face of the housing, and is introduced into an oblong slot of the adjustment lever, which

  slot allows the extension to be moved in the longitudinal direction

  tudinal of the adjustment lever. Any pivoting of the lever around the journal housing the movable blocking element therefore directly causes a displacement of the valve.

  discharge in the axial direction of the second hole.

  If the movable blocking element comprises a needle operating in conjunction with a fixed indication scale, placed for example on the case, the position of the

  discharge valve is thus indicated at all times.

  Another advantageous embodiment of the deformable sleeve gate valve according to the present invention can be obtained by making the delivery valve protrude from the second hole, by fixing the adjustment lever in the final part of the valve, and by placing it approximately angled

  straight with respect to the longitudinal axis of the relief valve

  fouling. A twist of the adjustment lever around the axis

  longitudinal of the discharge valve therefore leads directly

  twist the discharge valve itself, and this in a very simple way. By synthesizing

  with this achievement, it is particularly advantageous

  Tagous that the movable blocking element is placed on the side of the adjustment lever directed towards the fixed blocking element, and is in the form of a bar. It is advantageous

  that the end of the bar directed towards the blocking element

  fixed cage is beveled and fits into the fixed blocking element so as to be flush with the latter, which is fixed for example on the housing, to the

  like an openwork disc or a half-shaped arc

  moon, coaxially with respect to the longitudinal axis of the discharge valve. On its radially outward periphery, it is advantageous that the element

  blocking device has teeth that mesh with the outside

  bevelled half of the bar. So that the bar can always

  days mesh with the fixed blocking element, the extremi-

  Tee of the bar opposite the fixed blocking element is supported with respect to the adjustment lever by means of a spring, and therefore presses the bar in the direction of the fixed blocking element. To make it possible to remove the blockage, it is advantageous for the bar to include a spacer of

  release with which the bar is removed from the element

  fixed blocking by applying a direct force

  tion of the spring, thereby removing the blockage. In order to know the throttling position precisely at all times, the adjustment lever has in the overlap area of the fixed blocking element an indication opening operating in conjunction with a scale

  indicator placed on the fixed blocking element.

  In order to prevent the bar from getting stuck, it is fixed to the adjustment lever, using a

  guidance, so that it can move in the longitudinal direction

  nal. The attached figures show in more detail examples of an embodiment of the deformable sleeve gate valve according to the present invention, as well as suitable configurations: Figure 1 is an embodiment of the object according to the present invention seen from the side; Figure 2 is a view of the object according to the present invention, seen in section between the points A-A of Figure 1; Figure 3 is another embodiment of the deformable sleeve gate valve according to the present invention; Figure 4 is another advantageous embodiment of the deformable sleeve gate valve according to the present invention; Figure 5 is a view of the deformable sleeve gate valve according to the present invention seen in section

  between points B-B in Figure 4.

  Figures 1 and 2 show a deformable sleeve gate valve which comprises a housing (1) containing two holes (2,3) arranged in a T, the first hole (2) forming the crossbar of the T passing through the housing (1) . The hole (2) opens on two opposite sides (4,5) of the housing (1) of almost cubic shape, and receives an elastic sleeve (6) which can be pinched, which is introduced continuously into the hole (2). The sleeve (6) protrudes in a certain way from both sides (4 and 5) in order to be able to connect other hoses, pipes or the like. The outer periphery (7) of the sleeve (6) is placed against the surface

  (8) of the hole, and by its elastic properties, the man-

  chon (6) is fixed in the hole (2).

  One end of the second hole (3) opens

  vertically in the hole (3), while the other end

  mite opens into an upper part of the housing (1) arranged perpendicular to the two approximately parallel sides of the housing (4 and 5). The location (10) where the hole (2) opens into the hole (3) is covered by a part of the sleeve (6). The hole (3) has a roughly cylindrical pressure shoe (11) which is placed so as to move in the longitudinal direction of the hole (3), and

  whose end (12) directed towards the hole (2) is beveled

  tée and somewhat domed. On its outer periphery, the pressure shoe (11) has a radial extension

  (13) meshing in a longitudinal groove (14) dis-

  laid in the longitudinal direction of the hole (3), on the peri

  perished (15) of the latter. The pressure shoe (11) is thus housed in the hole (3), in the axial direction, and is

protected against twisting.

  The pressure shoe constitutes a part of a discharge valve (16) comprising mainly, in

  in addition to the pressure shoe, a cylindrical actuator (17).

  Like the outside diameter of the pressure shoe (11), the outside diameter of the actuator (17) roughly corresponds to the diameter of the hole (3); it is however a little lower than the latter in order to allow movement

  relative to the hole. The actuator (17) is intro-

  duit from the outside, by one of its ends (18) in the hole (3), and is placed against the front part (19) of the pressure shoe opposite to the rear part (12). This

  front part (19) has an oblique sliding surface

  as (20), having a certain angle relative to the longitudinal axis of the hole (3). The final part (21) of the part (18) of the actuator (17) has an oblique sliding surface (22) having the same inclination as the sliding surface (20). The actuator comprises at a suitable location on its outer periphery a projecting part (23) in the form of a mesh pin.

  in an inclined or helical circumferential groove (24)

  coidal, made in the periphery (15) of the hole (3). A twist of the actuator (17) around its longitudinal axis therefore causes a movement of the post (23) along the circumferential groove (24), the actuator being moved towards the first hole (2), inside of the bootmaker. In doing so, the sliding surface (22) rotates relative

  to the sliding surface. (20), bringing the pressure shoe

  sion protected against any twisting to make a translational movement in the longitudinal direction of the second hole (3), towards the hole (2). The curved end part (12) of the pressure shoe (11) is therefore brought all the way against the sleeve (6) and compresses it, so that the cross-section

  sleeve flow is reduced in the pinched area.

  On the peripheral part (25) of the hole (2) opposite the outlet (10), the housing (1) has a boss (26) protruding inside the hole (2), and making the sleeve slightly retract ( 6) at this location. In his second

  final position, in which the sleeve (6) is complete-

  Pinched, the pressure shoe (11) is pushed towards the hole (2) or enters the hole until the opposite walls of the sleeve (27 and 28) are compressed in the area of the boss (26). This bump (26) allows

to obtain a good seal.

  With its end (29) opposite the surface of

  slip (22), the actuator protrudes from the hole (3), and

  seal the upper part (9) of the shoemaker (1). Coaxially with respect to the actuator (17), the upper part (9) comprises a blocking element (30) in the form of an openwork disc, as well as an adjustment device

  (54), which are securely connected to the upper part

  re (9). The blocking element (30) can be indissolubly connected to or form an integral part of the case (1), or even be connected to the latter using fixing elements (31), in accordance with the figure 1 (screws or clamping pins). In accordance with FIG. 2, the fixed locking element (30) is fixed with the aid of three fixing elements (31) offset by about 1200 relative to one another. The inside diameter (32) of the locking element (30) in the form of a perforated disc is slightly greater than the outside diameter (33) of the actuator (17), so that the actuator ( 17) can move in the central hole (34) of the locking element (30). The flat surface (35) of the blocking element (30), which is opposite the case (1), has a toothing (36) whose teeth are directed outwards, radially, from the inside diameter (32 ). Arranged coaxially on the surface (35), there is a second

  perforated disc-shaped locking element (37), comprising

  both on its flat surface (38) directed towards the case, a toothing (39) complementary to the toothing (36) and meshing in the latter. The inside diameter (40) of the locking element (37) is the same as the diameter

interior (32).

  The locking element (37) is traversed radially, over its entire diameter, by a fixing element (41) which may for example be a clamping sleeve; this fixing element is introduced by an oblong slot (42) in the actuator (17), which slot passes radially through the actuator in the axial direction. The length of the slot (42) corresponds at least to the minimum axial adjustment stroke of the actuator (17), its width being slightly greater than the outside diameter of the fixing element (41). The end (29) of the discharge valve (16) protrudes coaxially, over a certain length, above the blocking element (37), and comprises on the edge of the end (29) a radial extension (43), presenting

  for example in the form of a circlip. A spring of pres-

  sion (44) is tensioned on the actuator (17); it is placed between the extension (43) and the upper part (45) of

  the locking element (37) directed towards the housing (1).

  In order to obtain a better bearing surface, a bearing washer (46) is placed between the spring (44) and the upper part (45). The outer periphery (50) of the locking element (37) has an adjustment lever (47) disposed radially outward, and which is securely connected

  to the locking element, for example by welding or screwing.

  To facilitate handling or to prevent it from injuring the manipulator, the end (48) of the adjustment lever (47) opposite the locking element (37) has a control handle (49) screwed onto the lever , which can be for example in the form of a ball. The adjustment lever (47) can of course be placed at a

  another suitable place for the locking element (37).

  The outer periphery (50) of the blocking element

  cage (37) further comprises a needle (51) connected soli-

  properly and adequately to the locking element (37), for example using screws. The needle (51) is directed radially outward from the locking element (37), and operates in conjunction with an indicator scale (52) which is suitably disposed on the surface (9) of the housing (1) , coaxial with the discharge valve (16). The length of the ladder corresponds

  at the maximum torsional stroke of the actuator (37).

  The operating mode of the deformable sleeve gate valve described is as follows:

2-5S69458

  il Under the effect of the pressure spring (44), the toothing

  (39) of the locking element (37) is pressed into the den-

  ture (36) of the fixed locking element (30). The blocking element (37) is thereby blocked and protected against twisting, just as the discharge valve (16) is blocked by the fixing element (41). When a force is exerted on the adjustment lever (47) or on the control handle (49), in the peripheral direction of the locking element (37), the two teeth (36 and 39) move the towards each other, the locking element (37) moving away a little from the locking element (30), in the axial direction. This axial movement of the locking element (37) takes place in the opposite direction to the force exerted by the spring (44) which is designed so that at rest, real locking is ensured by the two teeth ( 36 and 39) meshing, nevertheless allowing a small axial movement of the locking element (37). Due to the torsion of the blocking element (37), there is again a torsional movement of the actuator (17) or of the discharge valve via the fixing element (41). (16), which thus advances axially in the direction of the hole (2), under the effect

  conjugate of the projection (23) and the circumferential groove

  tielle (24). As the fastener (41) passes through the

  oblong slot (42), this allows a translational movement

  uninterrupted discharge valve (16), which

  it thus performs a rotational movement around its longitudinal axis, as well as a translational movement in

direction of its longitudinal axis.

  Figure 3 shows another embodiment of the

  deformable sleeve gate valve according to the present invention

  tion. The arrangement of the holes (2 and 3) is the same as in the embodiments presented above, but the hole (3) is placed closer to the side (4) of the shoemaker than in FIGS. 1 and 2. The discharge valve (16 ) is made here in one piece in which are assembled the pressure shoe and the actuator. Unlike the embodiments presented above, the two locking elements (30 and 37) are traversed coaxially by a separate journal (53) firmly connected to the housing (1). The arrangement of the locking elements (30 and 37) is as described above, as is the arrangement of the indicator scale - (52) and the needle (51). Unlike the previous embodiments, the adjustment device mainly composed of the locking elements is no longer on the surface (9) of the housing (1), but on one of the side faces (55), the surface of which is parallel in the longitudinal direction of the hole (3). The pin (53) is placed perpendicularly on the lateral face (55). The locking element (37) comprises an adjustment lever (47 ′) directed radially outwards, and comprising around half its length a guide slot (56) passing through it and

  operated in the longitudinal direction of the lever.

  The hole (3) is connected to that which surrounds it by a slot (57) made in the longitudinal direction of the hole (3), and arranged radially, towards the outside, in the direction of its

  lateral face (55), the indicated radial direction being perpendicular

  cular to the lateral face (55). A radial extension (58) formed on the discharge valve (16) and in the form of a stud is introduced into this slot, towards the outside, the discharge valve (16) passing through the hole (3) so as to be protected against twisting. The extension (58) protrudes above the lateral face of the housing (55) and is inserted into the adjustment lever (47) by the guide slot (56). To avoid

  that the adjustment lever (47 ') does not come off the extension

  ment (58), a circlip (59) is placed on the extension (58). The adjustment lever (47 ') is then located between the front face (55) and the circlip (59). The extension (58) must protrude above the lateral face (55) of such

  so that the adjustment lever has a low possibility

  bility of movement between the lateral face (55) and the

retaining ring (59).

  The operating mode of the deformable sleeve gate valve shown in Figure 3 is as follows: Due to the force exerted by the spring which is not shown, according to Figure 1, the locking element (37 ' ) is pressed against the fixed blocking element fixed on the case (1). The teeth of the opposite surfaces (35 and 38) mesh (see Figure 1). The locking element (37) then rotates, or pivots around the pin (53), to

  using the lever (47 '). This causes the discharge valve to

  ment (16) is moved in the direction of the sleeve (6) or of the surface (9), according to the direction of movement of the adjustment lever, by means of the radial extension (58) connected to the adjustment lever (47 ') . The translational movement of the discharge valve (16) is coupled to the movement of

  rotation of the locking element (37) by the guide slot

  dage (56). The operating mode of the safety device

  glage (54) has already been explained during the description

Figures 1 and 2.

  Figures 4 and 5 show another embodiment

  of the deformable sleeve gate valve according to the invention.

  The arrangement of the discharge valve (16) and the holes

  (2 and 3) in the case (1) is the same as in the figures

  res 1 and 2. Unlike the object shown in Figure 1, the circumferential groove (24 ') is not inclined, but has a symmetry of revolution relative to the longitudinal axis of the hole (3). This makes a rotation

  actuator (17 ') does not cause any axial movement

  actuator tane. At its end (29 '), the actuator

  (17 ') has an adjustment lever (47 ") detaching radia-

  outwardly, and whose longitudinal axis forms

  roughly a right angle to the longitudinal axis of the ac-

  holder (17 '). The adjustment lever (47 ") and the actuator (17 ') are securely connected to each other by means of a

  screws (60) and a safety pin (61) o The two elements can of course be connected in another way, for example by

  welding. The adjustment lever (47 ") is at a parallel distance from the surface (9); between

  both, there is a blocking element (30 ') connected solid-

  lying in the bootmaker (1). The locking element (30 ') has the shape of an arc of a circle, the center of this arc merging with the longitudinal axis of the delivery valve. The front face (62) of the blocking element (30 ') opposite to the discharge valve (16) has a toothing directed approximately radially outward from the discharge valve (16). On the side (63) of the adjustment lever (47 ") directed towards the case (1) is a movable blocking element (37 ') in the form of a bar (64); this blocking element ( 37 ') is arranged in such a way that the longitudinal axis of the bar (64) is

  coincides with the longitudinal axis of the adjustment lever (47 ").

  The bar (64) passes through a guide sleeve (65) fixed on the adjustment lever (47 "), so that the bar (64) can perform a translational movement relative to the adjustment lever (47"), in the longitudinal direction. The adjusting lever (47 ") and the bar (64) are arranged so that the longitudinal axis of the bar (64) is

  placed at the same level as the blocking element (30 ').

  The end (66) of the bar (64) directed towards the fixed blocking element (30 ') is fitted so that it fits exactly in the toothing (36') of the blocking element (30 '). The end (67) of the bar opposite the end

  (66) has a lug with which a pressure spring

  sion (44 ') is fixed. This spring is supported on the one hand on the stepped passage (69) of the tenon (68) to the bar (64), and on the other hand to an extension (43 ') fixed on the adjustment lever (47 ") In the part forming its end (67), the bar

  (64) is crossed by an unlocking lug (70) protruding

  laterally from the bar (64) as from the lever

glage (47 ").

  Under the effect of the force exerted by the spring of

  pressure (44 '), the end (66) of the bar (64) is pressed

  placed in the toothing (36 ') of the locking element (30').

  Due to the engagement of the end (66) and the toothing (36 ′), the discharge valve (16) is maintained in a position preventing any twisting. To adjust another throttling position, it suffices to direct the bar (64) by exerting a force on the release pin (70),

  in the opposite direction to the force exerted by the spring (44 ').

  The end (66) and the toothing (36 ') are therefore no longer meshed, and it is possible to twist the discharge valve (16). It is enough to release the release pin (70) so that the two elements mesh again.

  The different teeth (71) of the toothing (36 ') pre-

  both feel flanks of different lengths (72 and 72 '), which gives a different angle of inclination for the two flanks of a tooth. The sidewall (72) is disposed

  roughly radially with respect to the discharge valve-

  ment (16), while the flank (72 ') forms an acute angle

  relative to the sidewall (72), for example an angle of 45.

  The end (66) of the bar (64) is designed so as to correspond almost exactly to the shape of the space between two successive teeth. This embodiment of the teeth means that when the adjustment lever is actuated

  (47 ') (in accordance with Figure 4) clockwise

  those of a watch, the bar (64) must not be operated separately, because the flat of the tooth flanks causes an automatic triggering of the toothing. The assignment between the discharge valve (16) and the adjustment device (54) is such in this case that a twisting of the adjustment lever in the clockwise direction causes

  increased throttling intensity.

  The teeth can of course also be symmetrical.

  that, the different elements of a tooth being arranged at

the way of an isosceles triangle.

  In the overlap area of the fixed locking element (30 '), the adjustment lever has an indication opening (73) allowing the locking element (30') to be seen. This includes an indicator scale (52 '), drawn for example, which is visible through the opening

(73),

Claims (15)

- CLAIMS -   1.- Gate valve with deformable sleeve, provided with a housing (1) comprising two holes (2,3) arranged in T, the   first hole (2) forming the crossbar of the T tra-   pouring the housing (1) and opening on the opposite sides of the housing (4, 5), as well as an elastic sleeve which can be pinched (6), and provided with a discharge valve (16) housed in the second hole ( 3) leading to the first (2), which valve can move in the axial direction, between two final positions, in order to pinch the sleeve (6), the latter not being pinched in the first final position, and being fully pinched in the second end position, characterized in that the discharge valve (16) is connected to an adjustment device (54) in order to regulate the flow rate of a medium flowing in the sleeve, and in that the adjustment device (54) comprises locking elements (30,30 ', 37, 37') which fit into one another and serve to adjust and determine at will certain discrete intermediate positions between the two final positions.   2. A deformable sleeve gate valve according to claim 1, characterized in that the adjustment device (54) comprises an indication unit, such as for example a scale (52.52 ′) and a needle (5i), so as to allow reproducible adjustment of the   different positions of the discharge valve.   3.- deformable sleeve gate valve according to claim 1 or 2, characterized in that the adjustment device (54) comprises two locking elements (30.30 '; 37.37') fitting one into the other and relatively mobile with respect to each other, one of which (30.30 ') is fixed to the housing, and the other of which (37.37') can move with the discharge valve (16).   4.- Deformable sleeve gate valve according to one   any one of claims 1 to 3, characterized in that   the two locking elements (30.30 '; 37.37') are fitted   seated against each other using a spring.   5.- Deformable sleeve gate valve according to one   any one of claims 1 to 4, characterized in that   the movable blocking element (37.37 ') comprises an adjustment lever (47, 47', 47 ") which can pivot around a pivot, the movable blocking element (37.37 ') simultaneously   a similar rotational movement.   6.- Valve with deformable sleeve according to one   any one of claims 1 to 5, characterized in that   the fixed locking element (30,30 ') is fixed to the housing (1) by means of fixing elements (31) such as screws, pins or the like.   7.- Deformable sleeve gate valve according to one   any one of claims 1 to 6, characterized in that   the two blocking elements (30, 37) are located under   the shape of perforated discs and are coaxial superimposed   ment, the surfaces of the perforated discs (35,38) turned towards them having teeth (36,39) meshing with in a complementary way.   8.- Deformable sleeve gate valve according to one   any one of claims i to 7, characterized in that   the two locking elements (30,37) are crossed by   centrally and coaxially by a pin (53), a res-   pressure spell (44) being placed between the movable blocking elements (37) and the pin (53), thus pressing   the movable blocking element (37) against the blocking element   fixed cage (30) and making the two teeth mesh (36,39), the pressure spring (44) being preferably pushed coaxially by the pin (53), and bearing on the side of the latter (53) to a radial extension (43)   (rod, clamping sleeve or other).   9.- Deformable sleeve gate valve according to one   any of claims 1 to 8, characterized in that   the fixed blocking element (30) is placed between the housing   (1) and the movable blocking element (37).   10.- Gate valve with deformable sleeve according to   any one of claims 1 to 9, characterized in   that the pin (53) is formed by the discharge valve   Lement (16) projecting from the housing (1) through the second hole   (3), the movable blocking element (37) being mechanically connected   only to the discharge valve (16), preferably using a fixing element (41) such as a fixing sleeve, so as to avoid any twisting, and the discharge valve (16) comprising in particular an oblong slot (42) placed in the axial direction and passing through the   valve in the radial direction, which slot can be present   ter for example in the form of an oblong hole through which the fixing element (41) passes, the width of which preferably corresponds at least to the outside diameter of the fixing element (41).   11.- Valve with deformable sleeve according to   any one of claims 1 to 10, characterized   in that the housing has, in the area of the second hole (3) containing the discharge valve, a slot   (57) placed in the longitudinal direction of the hole and cross   sant the housing in the radial direction, with the exception of one of its outer sides (55), from the second hole (3), the outlet of the slot and the disc of the fixed locking element (37) being located on the same plane or on parallel planes. 12. A valve with a deformable sleeve according to claim 11, characterized in that a radial extension (58) is placed on the discharge valve (16) inserted in the second hole (3), which extension   crosses the slot (57) movably in the longitudinal direction   tudinal thereof, protrudes from the side of the case (55) and is inserted into a guide slot (56) formed in the adjustment lever, which guides   the extension (58) movably in the longitudinal direction   dinal of the adjustment lever (47 '), any pivoting of the lever (47') which can cause a rotation of the movable blocking element (37) relative to the blocking element   fixed (30), as well as a displacement of the discharge valve   Lement (16) in the axial direction of the second hole (3).   13.- Deformable sleeve gate valve according to one   any one of claims 1 to 12, characterized in that   that the movable blocking element (37, 37 ') has a   needle (51) indicating the position of the discharge valve   ment, together with a fixed indicator scale (52,52 '), which can be fixed for example on the case (1). * 14.- Gate valve with deformable sleeve according to one   any one of claims 1 to 6, characterized in that   the discharge valve (16) protrudes from the second hole (3), and in that the adjustment lever (47 ") is fixed in its   part forming the end, the lever being perpendicular to   laire to the longitudinal axis of the discharge valve, and the fixed blocking element (30 ') may be in the form of a perforated disc, or in a half-moon, in the form of a part of a perforated disc, being arranged coaxially with respect to the longitudinal axis of the discharge valve, and having a toothing (36 ') on its   front face (62) directed radially outwards.   15.- gate valve with deformable sleeve according to claim 14, characterized in that the movable blocking element (37,37 ') is placed on the side (63) of the lever   adjustment (47 ") oriented towards the appliance (1), and pre-   feels in the form of a bar (64), the end (66) of the bar (64) oriented towards the fixed locking element (30) being bevelled so as to allow a flush fitting in the teeth (36 ' ) of the blocking element   fixed (30), and the end (67) of the bar opposite to the   fixed blocking element (30) which can be pressed against   the adjustment lever (47 ") using a spring (44 ') press-   the bar (64) in the teeth (36 ').   16.- valve with deformable sleeve according to claim 15, characterized in that an unlocking tenQn (70) is placed on the bar so as to exert   a force opposite to that exerted by the spring (44 ').   17.- Valve-yanne with deformable sleeve according to   any one of claims 14 to 16, characterized 2S69458   in that the adjustment lever (47 ") has an opening   indication (73) in the overlap area of   the fixed blocking element (30 '), which opening works   in conjunction with an indicator scale (52 ') placed on the fixed locking element (30'). 18.- Deformable sleeve gate valve according to   any one of claims 15 to 17, characterized   in that the bar (64) is guided so as to move   in the longitudinal direction, using a guide sleeve   dage (65) placed on the adjustment lever (47 ").