FR2488932A1 - CONSTANT FEEDING APPARATUS - Google Patents

Abstract

THE INVENTION RELATES TO A CONSTANT FEEDING APPARATUS ALLOWING BOTH THE SPRAYING AND THE INJECTION OF MATERIALS. THIS APPARATUS INCLUDES A RESERVOIR 10 CAPABLE OF STORING A CERTAIN QUANTITY OF MATERIAL TO INJECT OR SPRAY, AND INSIDE WHICH TURN ONE OR MORE ARMS WHICH DRAW THE MATERIAL TOWARDS A DISCHARGE PIPE 43. A DEVICE ALLOWS TO ADJUST THE VOLUME OF AIR FLOWING FROM AN SUCTION PORT TO THE DISCHARGE PIPE 43 DEPENDING ON WHETHER THE WORK TO BE PERFORMED CONSISTS OF SPRAYING OR INJECTION. FIELD OF APPLICATION: INJECTION OF SOUND OR THERMAL INSULATION MATERIALS AND SPRAYING OF REFRACTORY OR FIRE-PROOF MATERIALS, ETC.

Description

The invention relates to a constant feed apparatus suitable for

  injection of a sound or heat insulating material such as a fibrous pulp, and spraying a fireproof or refractory material such as rockwool, etc.

  As is well known, a matter of iso-

  light thermal insulation such as fibrous pulp, etc., is used to form a thermal insulation layer by being injected into a space below the roof

  of a house or between walls, and a refractory material

  or fireproof such as rock wool, etc., is used to form a fireproof layer by spraying on steel frames, walls, etc. The injection of the thermal insulation material requires a high flow rate supply and the existing devices require a feed of 5 to 10

kilograms per minute.

  Furthermore, the spraying of the fireproof material must be carried out at a high speed, because this material contains setting substances such as cement, in most cases, and it takes during

  it is moistened by a mist of water and sprayed

  laughed on a wall. So we have considered until now that

  injection of thermal insulation material and spray

  Fireproof material can not be made using the same constant feed apparatus.

  The subject of the invention is a food appliance

  constant temperature suitable for both spraying operations and injection operations. A spraying device is removably mounted on this apparatus to enable execution of a spraying operation. An electrical control circuit is

  alternatively used for spraying operations

  and for injection operations. The apparatus according to the invention comprises a small chamber formed between a reservoir and a fan, and it comprises a stirring device which determines the amount of feed material contained in this small chamber. The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which FIG. 1 is a perspective view of the apparatus according to the invention in the state of use; Figure 2 is a section along the line II - II of Figure 1; Figure 3 is an elevation of the apparatus according to the invention, as it is when not in use; Figure 4 is a longitudinal section showing the tank of the apparatus according to the invention; Figure 5 is a partially schematic front view of the control device of the apparatus according to the invention; Figure 6 is an elevation showing the tank of the apparatus according to the invention, which is open; Figure 7 is a top view, on an enlarged scale, of the spray device used in the apparatus according to the invention; Figure 8 is a top view of the carriage for moving the apparatus according to the invention; Figure 9 is a partial longitudinal section, on an enlarged scale, showing the outlet of the reservoir and a flow conduit of the apparatus according to the invention; Figure 10 is a partial top view along line X - X of Figure 9; Fig. 11 is an exploded perspective view of the flow conduit and the fan used in the apparatus according to the invention; Fig. 12 is an exploded perspective view of the air volume control device of the flow conduit shown in Fig. 11; Figure 13 is a longitudinal section of a major part of another embodiment of the apparatus according to the invention; Fig. 14 is a top view of the apparatus shown in Fig. 13;

  Figures 15 and 16 are longitudinal sections.

  dinals of a substantial part of another embodiment of the apparatus according to the invention; and FIG. 17 is a longitudinal section of a

  variant of the tank of the apparatus according to the invention.

  The invention thus relates to a device for

  check or inject fibrous materials or powdered materials such as rockwool and pulp

or paste.

  The apparatus according to the invention comprises a reservoir 10 shown in FIG. 1 and containing a material such as, for example, a fibrous pulp. This tank is of the three-stage telescopic type, comprising a base cylinder 11 and first and second cylinders 12 and 13 which draw vertically

in the base cylinder 11.

  The base cylinder 11 is divided into an upper space 111 and a lower space 112 by a bottom plate 11 'which forms the bottom of the base cylinder, as shown in FIG. 4. The upper face of the bottom plate 11' is located at the bottom of the tank 10 and the space 111 on the upper side corresponds to the space surrounding the

tank bottom 10.

  The base cylinder 11 has a cover 113 which extends outwards and whose internal space

  communicates with the lower space 112 where the

  spray can be accommodated.

  The reservoir 10 has a plurality of rotatable arms 20 which can be rotated horizontally at the lower part of this reservoir 10, and which are controlled by a drive device, by

example a motor 30.

  An outlet 14 of the feed material is formed at the periphery of the base roll 11,

  as shown in FIG. 4, and a feed device

  tation, for example a fan 40, is placed on the

outlet side of this orifice 14.

  A movable carriage 50 supports the basic cylinder 11 below which it is placed, as shown in FIG. 1, and this base cylinder 11 is mounted on the carriage 50 so that it can be tilted vertically, the lower rear edge of the cylinder assuming the pivot function. In addition, a spraying device, comprising a compressor, a water pump, etc., as described below, is mounted so that

removable on the carriage 50.

  As shown in FIGS. 4 and 6, the

  40 of the apparatus according to the invention, which is used for spraying as for injection, is mounted on the cylinder 11 base and the device 60

  spray, which is only used for spraying

  is mounted on the carriage 50.

  FIG. 4 represents in section the common part of spraying and injection of the apparatus according to the invention and, consequently, the carriage 50 and

  other elements are not represented.

  The following description details

  on all the elements of the apparatus according to the invention.

  A support member 70, for example, a frame having four spokes 71 which extend horizontally from the center of this element, is arranged at the bottom of the first sliding cylinder 12 of the reservoir 10, as shown in FIG. 2, and the spokes 71 are positioned as shown in Figure 4 by the lines

24A8832

  in two-point dotted lines, at a fixed distance

  rotating arms 20, when the two sliding cylinders

  12 and 13 are raised as shown on the

figure 1.

  Although the bottom of the tank 10 may be flat, it advantageously has the shape of a cone whose center protrudes into the tank 10. Thus, the feed material is driven towards the periphery of the bottom by the centrifugal force resulting from a rotation of the arms 20 and, therefore, if the outlet orifice 14 is formed at the periphery of the bottom, the material

can flow smoothly.

  The bottom of the reservoir 10 has a peripheral groove 101, as shown in FIG. 2, and the free ends of the rotary arms 20 comprise paties 21 which engage in this groove 101.

  21 of each rotating arm 20 has a surface area of

  traenenment of the material, inclined upwards, in the direction of advance of the material. The embodiment described above is advantageous because the resistance encountered by the drive surface against the material can be reduced, since the section

  presented by this perpendicular training surface

  the direction of advance is reduced and the driving force required from the motor 30 may be low, the driving surface of the material, advancing, lifting the feed material which therefore passes only in small amounts in the small space between the lower end of the leg 21 and the bottom of the

throat 101.

  In this embodiment, the load applied to the motor 30 is significantly reduced because the lateral surfaces facing the front of the arms

  rotary devices 20 also have a slope and are inclined

born up.

  The reservoir 10 is constituted by the combination of several sliding rollers, for example two sliding rollers 12 and 13 which are fitted into one another as described above and which are made in such a way that the material storage volume increases by elevation. telescopic sliding cylinders 12 and 13, as shown in Figure 1, which avoids having

  to frequently load material.

  Thus, the fact that the sliding cylinders 12 and 13 are designed to be housed in the base cylinder 11 is advantageous, since the overall dimensions of the apparatus can be reduced, and the transport and storage of

the device are facilitated.

  The sliding cylinders rise in order to

  grow the capacity of the tank 10 and go down to decrease this capacity. These sliding cylinders must therefore be made so as to be interlocked with one another and retained, when they rise, in limit positions, and they must be able to

  also cleared easily when they go down.

  These engagement and disengagement operations

  can be achieved by means of a device

  cleavage of known realization. For example, the provision

  The interlocking device may be designed so that the sliding cylinders 12 and 13 engage horizontally in their uppermost position and can easily be lowered by sliding backwards.

towards their initial positions.

  The support member 70 will now be described.

  Since this support member 70 is disposed in the reservoir 10, a phenomenon appears in which the feed material forms a brittle bridge with the support element 70, the material situated above this element 70 being carried by the latter and the material bridge being destroyed and falling under the effect of the vibrations of the motor 30, etc., or the material being pushed upwards by the rotating arms 20 at the time of forming a 2488g32 cavity below. the support element 70, which causes a decrease in the amount of material

  located below the support member 70.

  Therefore, the force applied to the rotating arms 20 is determined as a function of the weight of the only material below the support member 70 and the force required for driving the rotors.

rotating arms 20-may be weak.

  In addition, in the embodiment described, the bottom of the groove 101 of the reservoir 10 has a recovery orifice 15, as shown in FIG.

  which is normally closed by a plate 151 shutter.

  The end sliding cylinder 13, forming the reservoir, has a hatch 131 which is open during the

loading the material.

  A recess 152 is formed in the side of the base cylinder 11 to communicate with the recovery port 15 and the groove 101 of the reservoir 10 and

  thus form, in part, the 15 recovery orifice.

  To recover the material remaining in the tank 10, it is necessary to remove the sealing plate 151 from the groove 101, to close the outlet orifice 14 and to turn the rotary arms 20. The feed material

  can then be recovered through the orifice 15.

  A flow conduit 16 is attached to the lower side of the groove 101 to form a channel 16 'which communicates with the outlet orifice 14 as shown in FIG. 9, and which allows the flow of the material

  Power. As shown in Figure 9, a provision

  The driving device of the material, for example a fan 50, is shown on the left side of the figure and a suction port 161 opens at the side

right of the figure.

  The exit orifice 14, when it is open

  in the bottom of the groove 101, has a semicircular shape

  circular and at least one grinding bar 141 is disposed perpendicularly to the direction of advance at rotating arms 20, as shown in FIG. 10. In the embodiment described, three grinding rods

141, 141 'and 141 "are used.

  Although these three grinding bars 141, 141 'and 141 "can be arranged at regular intervals, the outlet port 14 is divided into four spaces S1, S2, S3 and S4, in this embodiment the section of these spaces gradually decreasing in the direction of advance of the rotating arms 20 and the outlet orifice 14 of this embodiment being designed so that the maximum space corresponds to the third

  of the section of this outlet orifice 14.

  The flow conduit 16 carries a device for adjusting the feed rate, for example a turntable 162, a device for adjusting the intake air, for example an inlet shutter 163 having a window 164. which can be opened and closed by an air volume adjusting plate 165, and a connector 166 connecting the fan 40 at a point opposite to the suction port 161. The flow conduit 16 has a connecting orifice 167 which communicates with the outlet orifice 14 and which has a circular section with a radius greater than the semicircle formed by the outlet orifice 14. The feed rate adjustment plate 162 can be

  turned freely in this connection hole.

  A space S5 is formed between the flow duct 16 and the bottom plate 11 ', and the adjustment plate 162 is housed in this space S5 in order to be able to rotate freely. This adjustment plate 162 has a semicircular opening 162 'which corresponds to the outlet orifice 14 and which is formed in one half of the adjusting plate 162. The section of the opening through which the outlet orifice communicates with the connecting orifice 167 can therefore be modified by rotation of the

162 setting plate.

  Furthermore, the peripheral edge of the adjusting plate 162 is in the form of a setting dial which, in the embodiment described, has a notch 162 "by means of which it can be

maneuvered with the help of a finger.

  The base cylinder 11 comprises a stop member 17 consisting of a flat spring intended to fix the position of the adjusting plate 162 and to prevent this

  the last to turn while bearing against its peripheral edge.

  America. This stop member 17 can be mounted directly on the outer wall of the base cylinder 11. In the embodiment described, the stop member 17 is mounted on the flow conduit 16, and it is therefore unnecessary for the mounting portion of the stop member 17 to stop.

  is on the outside surface of the base cylinder.

  The air inlet shutter 163 is made in such a way that the suction port 161 can be fully opened when necessary, as shown in FIG. 12. In the embodiment described, the shutter 163 of air intake is achieved by pivotally mounting a circular plate having the semicircular window 164 at a point of the edge 163 'of the suction port 161. In this embodiment, the suction port 161 can be opened and closed by rotation of the inlet shutter 163.

  of air that pivots around the central point 163 '.

  The air volume adjusting plate 165 follows a semicircle slightly larger than that of the window 164 in order to open and close the latter. It is made so that it can rotate while the center of its right edge rotates on the center of the right edge of

the window 164.

  Therefore, the area of the window 164 can be increased or decreased by rotation of the plate 165

adjustment.

  The connector 166 has a tubular opening so as to fit on or in the tubular suction port 41 of the fan 40, and this opening has three circumferential circumferential grooves 166 'engaged at regular intervals, as shown, and an annular circumferential groove 166 "which communicates with the inner ends of

these throats.

  Moreover, the tubular suction port 41

  the fan 40 has three projections 411 for engaging

  which correspond to the grooves 166 'of said opening. The tubular suction port 41 is introduced into the connector 166 so that the projections 411 engage in the grooves, and the tubular port 41 is rotated circumferentially as the projections 411 are introduced into the annular grooves 166 "12 after the insertion of these tubular orifices 41

  suction, which ensures the connection of the ventilation

  40 on the flow conduit 16.

  A discharge pipe 43 is connected to the discharge port 42 of the fan 40, and the spray nozzle or the injection nozzle can be mounted.

  on the end of this discharge pipe 43.

  The spray device 60 comprises the control motor 61 associated with the water pump 62 and

  the compressor 63 which are driven by the motor 61.

  These three organs are arranged on the plate 64 of

  mounting, as shown in Figures 6 and 7.

  The control motor 61 is started when a connector 611 is connected to the device 80 of

  control as shown in Figure 5.

  A suction pipe 621, a feed pipe 622

  Water supply and an air supply pipe 631 are connected to the service panel 65. A water pressure regulating valve 623 is mounted above the water supply pipe 622 and, when the water pump 62 is overloaded, the water flowing in the pipe is discharged to a return pipe 624. by the way

  by the pressure regulating valve 623.

  Figure 8 is a top view showing the carriage 50. This carriage 50 comprises rollers 51 and a frame 52 which carries handles 53

placed in four positions.

  The mounting plate 64 of the spray device 60 has engagement grooves 641 which engage the frame 52 at the bottom face of the mounting plate, the latter being installed as shown in FIG. of the

grooves with frame 52.

  The mounting plate 64 comprises a handle 66 by means of which the operator carries out the assembly and

disassembling the plate 64.

  The spray device 60 is preferably

  located in the lower space 112 of the tank 10, as shown in FIG. 6, although it may be in the form of an independent device,

as the case may be.

  If the spray device 60 is removably mounted in the tank 10 or in the hood

  113, the following advantages are obtained.

  When injecting a fibrous pulp into a space between walls, the spray device 60 is unnecessary. In this case, it is sufficient to transport the device alone, from which the spraying device has been removed, to the work site.

that saves energy.

  Since the spraying device

  of the apparatus itself can be transported separately

  This transport can be done conveniently.

  During a spraying operation, the apparatus is equipped with the spray gun mounted on the discharge pipe 43. In this case, when the connection panel 65 is connected to the spray gun and compressed air and water are supplied to this gun, the spray work

can be done.

  The spray device 60 does not always require the use of the compressor 63 and, if a spray nozzle is mounted on the gun,

  the spraying operation can be carried out

  only with the help of the 62 water pump. -

  Although the handles 53 may be of

  In the free run, the tank 10, which is heavy, can be easily raised when the handles 53 occupy the tank 10 at positions slightly above the ground, as shown. In the embodiment in which the reservoir 10 is rotatably mounted at a point and rotatable, it is not necessary for this reservoir to be tilted downward until the surface

  its vertical wall comes into contact with the ground.

  For this purpose, a support leg 18 is attached to the outer peripheral wall of the reservoir 10 as shown in FIG. 6, so that this reservoir 10 is supported.

during rotation.-

  The spray device 60 can be

  mounted to slide on the carriage 50.

  In this case, an opening can be formed in the part

  before the hood 113 so that the spray device 60

  can be output through this opening.

  The spray device 60 can be designed to be disassemblable. For this purpose, the mounting plate 64 is attached to the transport carriage 50 or to the base roll 11, and it can be separated from the

tank 10.

  In this case, the spray device 60 can be attached to the side of the tank 10 or to the upper part of this tank 10. In the latter case, the material supply port can be provided

  at the upper side of the tank 10.

  The control device 80 comprises three switches 81, 82 and 83 and the control panel 84, on which these switches are mounted, comprises a

85 dial setting.

  The first switch 81 is a selection switch which is placed in a position SP to perform a spraying operation and which can be tilted to a position BL for execution of an injection operation. This switching makes it possible to position an operation control circuit 86 for the execution of a spraying operation or

an injection operation.

  The second switch is the main switch that can be placed in the closed and "M" position to operate the unit and

  open and stop position "A" to stop the

  mera. The third switch is the control switch of the spray device 60 which, depending on whether it is placed in the closed and on position "M" or in the open and closed position "A", control

the spray device 60.

  When the first switch 81 is set to SP, to control a sputtering operation and the control circuit 86 is set for a spraying operation, the supply motor can be stopped by remote control from the the spray nozzle, and the fan 40 remains in operation. The rotational speed of the fan blades 40 can be adjusted freely

by means of the adjustment dial 85.

  On the other hand, if the first switch 81 is switched to the BL position for the execution of an injection operation and the control circuit 86 is set for such an operation, the power supply motor 30 remains on when the main switch 82 is closed, while the fan 40 can be controlled remotely from the position of the injection nozzle. In the case of an injection operation, the fan 40 is generally rotated at its maximum speed and, in most cases, it is

  no need to adjust this speed.

  The third horn 83 is the switch controlling the spray device 60. In the embodiment described, the fan 40 and the supply motor 30 are supplied with a voltage of 100 volts, for example, while the motor of the spraying device 60 is supplied with a voltage of 200 volts, for example, and so he has

  an independent power supply device.

  Therefore, the control panel 84 is connected to a cable 841 for the voltage of 100 volts and to a cable 842 for the voltage of 200 volts which is

  used exclusively by the spray device 60

  tion. During the spraying operation carried out by means of the apparatus, the spraying of the material can be triggered and stopped by rotating and

stopping the rotating arms 20.

  By cons, when the device is used for an injection operation, the rotating arms rotate continuously and the injection of the material is triggered and stopped by switching on and off

fan 40.

  In this apparatus, when the spraying is stopped, the discharge pipe 43 is empty, while it is filled with material at the end of an injection operation.

  The following description will focus on the use

  of the apparatus for a spraying operation.

  The first switch 81 of the control device 80 is positioned for performing spraying; the second switch 82 is then closed, at the same time

  time that the third switch83 orders the

  spray 60 is closed too. Thus, the power motor 30 can be remotely controlled by means of a cable 861, and the

  Sprayer device 60 turns on.

  For this spraying work, the suction orifice 161 of the flow conduit 16 is completely opened in advance and the regulating shutter 163 is turned in order to move it away from this orifice 161.

  suction, as shown in Figure 12.

  As previously described, after the control device 80 and the flow conduit 16 have been positioned, the spraying operation can be performed, during which the amount of material to be sprayed is adjusted by adjusting the speed of the spraying device. rotation of the fan 40 using the adjustment dial 85 and by rotating the plate 162 for adjusting the feed rate of the conduit

16 flow.

  In this case, the suction port 161 is fully open to increase the volume of air and the material can be sprayed onto the surface to be coated with a strong air jet. The spray mode can be changed by adjusting the amount of material

to spray.

  During the spraying operation, the spray nozzle (not shown) attached to the end of the discharge pipe 43 is directed to the surface to be coated; the control circuit 86 is positioned by the switch on this spray nozzle, and the material can be sprayed or stopped. When the material is sprayed, pressurized water from the water pump 62 is introduced into the nozzle through a water tap, and is used to form a mist with the aid of compressed air from the compressor 63, this mist being added to the sprayed material from the discharge pipe 43. The material thus sprayed adheres to the surface to be coated, with the addition of the water mist,

and it forms a layer.

  The description will now focus on the

  of the apparatus according to the invention for an operation

  Injection ration. In this case, the first switch 81 of the control device 80 is placed in position

  injection and the second switch 82 is closed.

  Thus, the fan 40 can be controlled at

  distance via cable 861. If the

  remote control switch is placed at the end of the discharge pipe 43, the fan 40 can be controlled by means of this switch while the

43 discharge pipe is maintained.

  Since the injection nozzle is gener-

  rarely attached to the end of the discharge pipe 43 in the case of an injection operation, it is preferable that the remote control switch is mounted on this nozzle. If the material to be injected is discharged directly from the pipe 43 without passing through such an injection nozzle, only the remote control switch

  may be attached to the end of the discharge pipe 43.-

  For such an injection operation, the plate 162 for adjusting the quantity of feed material of the flow conduit 16 is opened so that the orifice

  14 of exit is fully open, whereas the ob-

  The air intake adapter 163 covers the suction port 161 to close it. The injection force of the material can be adjusted by adjusting the area of the opening of the window 164 which can be varied

  using the plate 165 for adjusting the volume of air.

  If the intake air from the suction port 161 is thus limited, the material to be injected is sucked directly into the flow channel 16 'by the flow produced by the fan 40 and is discharged from the pipe 43. Therefore, when the suction port 161 is completely closed, a large amount of

of material is unloaded.

  The implementation, described above, of the apparatus according to the invention has the advantages

-o indicated below.

  The outlet orifice 14 of the reservoir 10 is divided by at least one grinding bar 141 which cuts at a right angle the direction of advance of the rotary arms 20 and, consequently, even if the material to be driven by the rotary arms 20 Agglomerated blocks form, it is pulverized into small pieces by the grinding bar 141 and agglomerated blocks are therefore not likely to close the channel 16 '. In addition, the sections of the spaces S1 to S4 delimited by the grinding bars 141, 141 'and 141 "decrease in the direction of advance of the rotating arms 20, as shown, so that the agglomerated blocks can be further pulverized when the section of the outlet orifice 14 is reduced by the rotary adjusting plate 162, and the sputtering of the particles of material thus makes it possible to obtain a

  satisfactory finish. Since the suction port 161

  In the course of a spraying operation, the material is completely opened and the material can be sprayed with a large volume of air and a high force. Since the volume of air used during an injection operation is adjusted only by means of the window 164 while the suction port 161 is kept closed, the suction force of the ventilator 40 can be increased. and a large volume of material can be

discharge.

  The suction force of the fan 40 is low during a spraying operation and the spraying of the material can be stopped by stopping the rotating arms 20. If a material such as rockwool is used, for example the discharge pipe 43 is not filled with heavy material at the time of stopping the spraying and, therefore, this spraying can be easily resumed and the amount of spraying material can be adjusted at the time of spraying.

  resumption of spraying work.

  Moreover, the suction force of the

  40 is important during a business operation.

  and it is possible to stop the discharge of the material by stopping the fan 40. In this case, the material can not leave the orifice 14, because it is retained by the injection material remaining in the pipe

  43 discharge, although the rotating arms 20 rotate.

  The material can be unloaded at the time of recovery

injection work.

  The apparatus according to the invention can be used either for spraying or for injecting, and it is also effective for both.

types of operation.

  The apparatus according to the invention is not limited to the embodiment described above. The grinding bar 141 of the outlet orifice 14 is not always necessary and the rotating arms 20 can be rotated in the vertical direction, as shown in FIG. 17. However, the material contained in the tank 10 is preferably sprayed during the injection operation, as is the case in the embodiment described above, and in

that described below.

  The air inlet shutter 163 of the flow duct 16 is preferably attached to this duct 16, as well as in the embodiment described in FIG.

- 2488932

  previously. Depending on the case, the air inlet shutter

  can be of the hat type, mounted on the orifice 161.

  Other embodiments of the invention

  will be described below with reference to Figures 13 and 14.

  In Fig. 13, the material supply reservoir 10 has a material receiving opening which opens at its upper face, and this reservoir can

  be, for example, the drum type.

* The rotating arms 20 are disposed inside the tank 10, close to the plate 11 'which forms the bottom of this tank, for example parallel to the

  bottom surface, and are rotated by the

  control device such as motor 30, etc., while

being kept at the bottom.

  A small chamber 19, for example, is formed inside the reservoir 10 so that the material is collected by the rotating arms 20 and that this collected material passes into this chamber 19 through a receiving orifice 191 opening into the reservoir,

  the chamber 19 then guiding the material to the ventilator

40.

  Therefore, this small chamber 19 assumes the function of discharge element, as is the case

  of the outlet orifice 14 of the tank 10.

  The small chamber 19 is in the form of a recess similar to a gutter formed in the plate 11 'of the bottom. The number, shapes and positions of the small chambers 19 are not limited to the embodiments shown and, for example, several small

  chambers 19 and 19 'may be used as

shown in Figure 15.

  A stirring element 192, arranged in the small chamber 19, is intended to stir the material contained in the latter to prevent said material from being compressed, to solidify and to be abruptly sucked by the feed device. of the suction type, for example the fan 40 which is placed near

from the small room 19.

  Agitator 192 is driven by a control device such as motor 193 and produces the stirring action described above, for example by rotation. In other words, when the device is

  used for an injection operation, an important volume

  so much material is continuously discharged by the fan to the outside and, therefore, pieces of

  The material is sucked into the tubular hole 41 of

  fan 40 under the effect of a sudden suction, which has the effect of closing the orifice

  tubular 41 intake of the fan 40.

  In this embodiment, the material

  is sprayed, and its movement is controlled by

  192 which prevents the simultaneous aspiration of a

large amount of material.

  The feed rate adjusting member, for example the slider type setting plate 168, which adjusts the amount of material exiting the tank 10,

  is placed between the tank 10 and the fan 40.

  This plate 168 for adjusting the feed rate is generally arranged between the flow conduit 16 and the small chamber 19 and can be associated with the feed orifice 191 of the small chamber 19.

  depending on the case. The plate 168 for adjusting the flow rate of

  The invention may be an externally controlled valve-type adjusting plate for adjusting the area of the opening of the flow conduit 16 which communicates the supply port 191 with the tubular port 41. suction. It is preferable to use with the small chamber 19 a sliding type shutter whose opening area can be adjusted. The flow conduit 16, of the tube type, is disposed between the feed rate adjusting plate 168 and the suction tubular orifice 41.

  fan 40, and has the suction port 161

  ration. This suction orifice 161 constitutes, with a sliding shutter 169, the air volume adjusting device which is intended to adjust the area of the opening and the suction orifice 161 is closed by this sliding shutter. to increase the suction force, i.e., the static pressure of the fan 40, and is open to increase the

  fan 40 air volume and the speed of the

air.

  The small chamber 19 can be arranged at the bottom of the tank 10, as shown in FIG. 13, or on the side of the tank 10, as shown in FIG.

figure 15.

  The small chamber 19 can be made radially

  Alternatively, the small chamber 19 may be formed on the bottom of the tank 10, or it may be formed on a portion of the bottom of the tank as shown in FIG.

  can be done so that the material comes from

  at the same time several openings 191 and 191 'provided

  in the bottom plate 11 ', as shown in FIG.

  In this case, the small chamber 19 may be relatively large and the amount of material it receives may

  be adjusted appropriately.

  It goes without saying that many modifications can be made to the apparatus described and shown

  without departing from the scope of the invention.

Claims (24)

  1. Constant feed apparatus, characterized in that it comprises a tank (10) having a bottom (11 ') and for storing material, at least one material discharge member (43) disposed to the part lower tank, at least one rotatable arm (20) which is rotatably mounted in the tank under the action of a control device to advance the material to the discharge member, a conduit (16); ) which has a channel (16 ') communicating with the discharge member, an orifice (161)   which communicates with the canal, and a   Positive intake control which is intended to deter-   to reduce the intake air volume from the suction port, a suction type supply device connected to the duct channel and receiving air from the suction port, and a device (162) for adjusting the feed rate, located on at least the flow conduit or the discharge member to adjust the amount of material passing through the channel, so that the volume of air from the orifice   suction is increased during a pulp operation.   verifying and diminished to establish a depression   desired during an injection operation.   2. Apparatus according to claim 1, characterized   characterized in that the discharge member has an outlet orifice (14) which communicates with the channel flow duct.   3. Apparatus according to claim 2, characterized   characterized in that the outlet port is divided into a plurality of spaces (Si S4> by at least one grinding bar (141) which is arranged to be oriented perpendicular to the direction of advance of the rotary arm.   4. Apparatus according to claim 3, characterized   characterized in that the sections of the spaces delimited by said grinding bar are smaller and smaller   in the direction of advance of the rotating arm.   5. Apparatus according to claim 1, characterized   characterized in that the discharge member comprises a small chamber (19) and an agitator (192) disposed in this room.   Apparatus according to claim 5, characterized   characterized in that the small chamber of the discharge member is a recess of the gutter type,   radially on the bottom (11 ') of the tank.   Apparatus according to claim 5, characterized   characterized in that the small chamber of the discharge member is in the form of a vertical space located on the bottom of the tank.   Apparatus according to claim 1, characterized   characterized in that the tank is cylindrical and has a groove (101), in which the rotating end (21) of the rotary arm penetrates, this groove being formed in the bottom of the tank, along the inner wall of the latter.   Apparatus according to claim 8, characterized   characterized in that the end (21) of the rotary arm is inclined upwards, in the direction of advance of this arms.   Apparatus according to claim 1, characterized   in that the tank is constituted by the assembly   telescoping several cylinders (11, 12, 13) with different diameters so that the capacity of the reservoir can be increased by successive elevations of cylinders whose diameters are decreasing.   Apparatus according to claim 1, characterized   characterized in that the intake air adjusting device is an inlet air shutter (163), of the hat type, which can be mounted   removable on the suction port.   Apparatus according to claim 11, characterized   characterized in that the shutter has a window (164) on which a plate (165) for adjusting the volume of bus is mounted a defioe varerlaire the opening of this window.   Apparatus according to claim 1, characterized   characterized in that the intake air adjusting device is in the form of an inlet air shutter (163) pivotally mounted at a point on the suction port to open and close this orifice, said shutter having a window (164) to which an air volume adjusting plate (165) is fixed to vary   the area of the opening of said window.   Apparatus according to claim 1, characterized   characterized in that a support member (70), located at a determined distance from the rotating arm, is placed above the latter, in the tank, and has a plurality of radii (71) arranged horizontally inside the tank to form a fragile bridge   of material introduced into the tank.   15. Apparatus according to claim 1, characterized   characterized in that the flow conduit has a receiving port which communicates with the reservoir outlet port, and a rotatable disc (162) having a portion thereof having an opening (162 ') communicating with the outlet port, this disk being fixed to the receiving orifice in order to constitute a feed rate adjustment plate, part of which of the periphery appears outside the reservoir so that it can be maneuvered. the outside of the tank.   Apparatus according to claim 1,   characterized in that the peripheral edge of the feed-rate adjusting plate has a protrusion (162 ") which allows this plate to be fixed by the inlet   in contact with this projection with a stop member (17).   Apparatus according to claim 16, characterized   in that the arresting device comes under the   form of a flat spring mounted on the flow conduit.   18. Constant feed apparatus, characterized in that it comprises a tank (10) which has a bottom (11 ') and which is intended to store material, a material discharge member situated at the lower part of the reservoir, at least one rotating arm (20) which can be rotated by a control device inside the reservoir, in order to advance the material towards the discharge member, a conduit (16); ) which is connected to the discharge member and which comprises a channel (16 ') communicating with the discharge member, a suction orifice (161) located on this channel, and a control device intake air which regulates the intake air volume from the suction port, a fan (40) which is connected to the duct channel and   which receives air from the intake port, a device   sitive- (162) for adjusting the feed rate located at least on the flow conduit or discharge member and for adjusting the amount of material   directed towards the channel, and a device (60) for spraying   in the tank and intended to carry out a spraying operation, so that the volume of air introduced into the channel by passing   the suction port decreases during an operation.   injection dose and increases during a spraying operation during which the spray is used.   Apparatus according to claim 18, characterized   characterized in that the lower part of the tank has a void space (112) in which the device spray is housed.   Apparatus according to claim 19, characterized   characterized in that the tank is mounted on a transport carriage (50) and can be tilted about a point of said transport carriage, which point is used as a pivot to expose the spray device.   Apparatus according to claim 19, characterized   characterized in that the tank body has an opening allowing the spray device to be introduced into the tank and out of this   last through said opening.   22. Apparatus according to claim 20, characterized   in that the spraying device is   removably mounted on the transport trolley. -   23. Constant feeding apparatus,   characterized in that it comprises a reservoir (10) which has a bottom (11 ') and which is intended to store material, a discharge member of the material, located at the bottom of the reservoir, at least one arm rotary valve (20) which is rotatably mounted by a control device within the reservoir, for advancing the material towards the discharge member, a flow conduit (16) which is connected to the discharge member and which comprises a channel (16 ') communicating with the discharge member, a suction port (161) on said channel, and an intake air adjusting device for to reduce the volume of air flowing from the suction port to the channel during an injection operation, and to increase this volume of air   during a spraying operation, a ventila-   tor (40) which is connected to the channel of the flow conduit and which receives air from the suction port, a feed rate adjuster (162) mounted on at least the conduit of flow or discharge member and for adjusting the amount of material directed towards the channel, a device (80) which controls the operation of the rotary arm and fan control device, said control device being adapted to operate in a controlled manner. continuously controlling the rotary arm controller and remotely controlling the fan during an injection operation, the controller (80) continuously operating the fan and remotely controlling the rotary arm controller   during a spraying operation.   24. Constant feeding apparatus,   characterized in that it comprises a reservoir (10) which has a bottom (11 ') and which is intended to store material, a discharge member of the material, arranged at the bottom of the reservoir, at least one arm rotary device (20) which is rotated in the reservoir to advance the material to the discharge member, a flow conduit (16) which is connected to the discharge member and which comprises a channel (16 ') ) communicating with the discharge member, a suction port (161) on the channel, and an intake air adjusting device for decreasing the volume of air flowing from the suction port to the channel during an injection operation and to increase the volume of air during a spraying operation, a fan (40) which is connected to the channel of the flow conduit and which receives from the air of the suction port, a device (162) for adjusting the feed rate, mounted on at least the pipe flow device or discharge member to adjust the amount of material directed to the channel, a spray device (60) disposed in the reservoir for performing a spraying operation, and a control device (80) the operation of the rotary arm drive device, the fan and the spraying device, this control device being designed   to continuously operate the device   rotating the arm and for remotely controlling the fan during an injection operation, the controller being able to continuously operate the fan and the spraying device and   able to remotely control the training device rotating arm.