CN210545118U

CN210545118U - Pressure-reducing injection-increasing surfactant reaction kettle stirring device

Info

Publication number: CN210545118U
Application number: CN201921151968.9U
Authority: CN
Inventors: 涂晓斌
Original assignee: Shengli Oilfield Haifa Environmental Protection Chemical Co Ltd
Current assignee: Shengli Oilfield Haifa Environmental Protection Chemical Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-19
Anticipated expiration: 2029-07-22

Abstract

The utility model provides a depressurization increases annotates surfactant reaction cauldron agitating unit, the pedestal comprises a pedestal, the bottom surface of the top surface fixed mounting reation kettle body of pedestal, the bottom of the reation kettle body is equipped with the liquid outlet, the top surface of the reation kettle body is equipped with the several feed inlet, the top of feed inlet is equipped with sealed lid respectively, sealed lid is respectively through the top surface of hinge fixed mounting at the reation kettle body, sealed lid is the sealed feed inlet that corresponds respectively, the top surface fixed mounting output shaft motor down of the reation kettle body, the top surface middle part of the reation kettle body is equipped with the through-hole, the inside of the reation kettle body is equipped with two vertical and collinear reversing arrangement of central line. The utility model discloses a reversing arrangement has realized first blade and the reverse stirring of second blade, has increased the flow direction variability of reaction liquid, makes reaction liquid mix sooner, more abundant.

Description

Pressure-reducing injection-increasing surfactant reaction kettle stirring device

Technical Field

The utility model belongs to the field of industrial equipment, specifically speaking are a depressurization augmented injection surfactant reaction kettle agitating unit.

Background

The surfactant is a substance which can obviously change the interface state of a solution system of the surfactant, has a series of physicochemical actions such as wetting or anti-sticking, emulsifying or demulsifying, foaming or defoaming, solubilizing, dispersing, washing, anticorrosion, antistatic and the like and corresponding practical application, and becomes a flexible and diversified fine chemical product with wide application, the surfactant is composed of micelles with hydrophilic groups outside and hydrophobic groups inside, and the preset purpose is achieved through the hydrophilic property of the hydrophilic or hydrophobic groups, so in the preparation process of the surfactant, how to quickly and fully contact the reaction liquid, the quick combination of the hydrophilic groups and the hydrophobic groups directly influences the production efficiency of the surfactant, the traditional surfactant is provided with a stirring device, but the stirring effect is poor, the instantaneous stirring direction of a coaxial blade is single, and the reaction liquid is not fully fused, the production efficiency is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pressure reduction and injection increase surface active agent reaction kettle stirring device for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

a stirring device of a reaction kettle for reducing pressure and increasing injection of surfactant comprises a pedestal, wherein the top surface of the pedestal is fixedly provided with the bottom surface of a reaction kettle body, the bottom of the reaction kettle body is provided with a liquid outlet, the top surface of the reaction kettle body is provided with a plurality of feed inlets, the upper parts of the feed inlets are respectively provided with a sealing cover, the sealing covers are respectively fixedly arranged on the top surface of the reaction kettle body through hinges, the sealing covers respectively seal the corresponding feed inlets, the top surface of the reaction kettle body is fixedly provided with a motor with a downward output shaft, the middle part of the top surface of the reaction kettle body is provided with a through hole, the inside of the reaction kettle body is provided with two vertical reversing devices with collinear central lines, the middle parts of the reversing devices are respectively provided with a transmission shaft, the rotation of the transmission shaft can drive the periphery of the reversing devices to reversely rotate, the reaction kettle is internally provided with a stirring shaft which is concentric with the transmission shaft, the stirring shaft is positioned between two reversing devices, two ends of the stirring shaft are respectively and fixedly connected with the shaft ends of the adjacent transmission shafts, the peripheries of the reversing devices are respectively provided with a plurality of first blades, the first blades at the lower side are uniformly and fixedly arranged at the periphery of the reversing device at the lower side, the periphery of the reversing device at the upper side is provided with a plurality of vertical grooves, the grooves are in one-to-one correspondence with the first blades at the upper side, limiting rods are respectively arranged in the grooves, one end of each limiting rod is connected with the inner wall of the corresponding groove through a hinge, the lower end of one side of each first blade at the upper side close to the reversing device at the upper side is respectively arranged in the corresponding groove through a rotating shaft, the middle part of the side of each first blade at the upper side close to the reversing device, be equipped with the horizontal second blade of several between two inversion device, the even fixed mounting of second blade is in the periphery of (mixing) shaft, and the horizontal length of second blade outwards descends in proper order from the middle part of (mixing) shaft.

The stirring device of the pressure-reducing injection-increasing surfactant reaction kettle comprises a disc-shaped shell, a plurality of first gears, a plurality of second gears, a first bearing, a second bearing, an annular plate, a transmission shaft and a sealing device, wherein the inner wall of the shell is respectively and fixedly connected with the periphery of the corresponding annular plate, the inner part of the inner ring of the annular plate is respectively and fixedly connected with the periphery of the second bearing, the inner ring of the second bearing is respectively and fixedly connected with the periphery of the corresponding first bearing, the inner ring of the first bearing is respectively and fixedly connected with the periphery of the corresponding transmission shaft, the top surface and the bottom surface of the shell are respectively provided with through holes collinear with the center lines, two ends of the transmission shaft respectively penetrate through the corresponding through holes, the periphery of the transmission shaft is respectively and fixedly connected with the inner rings of the corresponding second gears, the first gears are respectively and uniformly distributed around the corresponding second gears, the second gears are respectively meshed with the corresponding first gears, the first gears are fixedly arranged on the inner wall of the shell through rotating shafts respectively, tooth grooves are formed in the outer portion of the inner ring of the annular plate and are matched with corresponding first gear tooth patterns respectively, and the sealing device is located in the through hole of the shell and is tightly matched with the inner wall of the through hole and the periphery of the transmission shaft.

According to the stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant, the first blade is a turbine blade, the rotating direction of the first blade is clockwise, and the second blade is a transverse rectangular blade.

According to the stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant, the spring is arranged between the first blade at the upper side and the annular plate at the upper side.

The stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant is a non-contact sealing element.

According to the stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant, the outer wall of the top surface of the reaction kettle body and the top surface of the sealing cover are respectively provided with the lifting rings.

According to the stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant, the periphery of the reaction kettle body is provided with the support rings which are arranged in a threaded manner, and the temperature control pipe is arranged in the support rings.

According to the stirring device of the reaction kettle for reducing the pressure and increasing the injection of the surfactant, the number of the first gears in the reversing device is more than 3.

The stirring device for the pressure-reducing injection-increasing surfactant reaction kettle is characterized in that the motor is a speed-regulating motor.

The utility model has the advantages that: the utility model realizes reverse stirring of the first blade and the second blade through the reversing device, increases the flow direction variability of reaction liquid, and leads the reaction liquid to be mixed more quickly and fully, when in use, the reaction liquid enters the reaction kettle body through the feed inlet, a worker starts the motor to lead the output shaft to rotate anticlockwise, the motor drives the transmission shaft of the upside reversing device to rotate anticlockwise, the transmission shaft of the upside drives the stirring shaft to rotate anticlockwise, the stirring shaft drives the second blade, the transmission shaft of the downside rotates anticlockwise, the second blade drives the surrounding reaction liquid to rotate anticlockwise, meanwhile, the reversing device respectively drives the corresponding first blade to rotate clockwise, the first blade of the upside rotates by taking the corresponding rotating shaft as the axis respectively under the action of centrifugal force, the rotating track of the first blade of the upside is oblique under the action of the centrifugal force and the driving of the upside reversing device, the first blade of top stirs the scope bigger, the diffusion that makes the reaction raw materials of back filling faster, the first blade of upside makes the liquid that is located reation kettle body upper portion have the trend of downward flow, the first blade of downside makes the liquid that is located reation kettle body bottom have the trend of upward flow, the horizontal direction stirring of second blade in addition, make reaction liquid flow direction three-dimensional, it is changeable, form the turbulent flow, hydrophilic group in the reaction liquid, hydrophobic group is faster under the resultant force stirring of first blade and second blade, more abundant combination, surfactant finished product speed accelerates, thereby production efficiency has been improved, the first blade of downside has still played the effect of preventing the reactant deposit when driving reaction liquid spiral upward movement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; fig. 3 is a partial enlarged view of ii of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A pressure-reducing injection-increasing surfactant reaction kettle stirring device comprises a pedestal 1, wherein the pedestal 1 is fixedly installed in a workshop through a support, the top surface of the pedestal 1 is fixedly provided with the bottom surface of a reaction kettle body 2, the bottom of the reaction kettle body 2 is provided with a liquid outlet 3, a liquid outlet control valve is arranged in the liquid outlet 3, the top surface of the reaction kettle body 2 is provided with a plurality of feed inlets 4, sealing covers 5 are respectively arranged above the feed inlets 4, the sealing covers 5 are respectively and fixedly installed on the top surface of the reaction kettle body 2 through hinges, the sealing covers 5 respectively seal the corresponding feed inlets 4, the top surface of the reaction kettle body 2 is fixedly provided with a motor 7 with an output shaft facing downwards, the motor 7 is fixedly installed on the top surface of the reaction kettle body 2 through a support, the middle part of the top surface of the reaction kettle body 2 is provided with a through hole, two vertical reversing devices, 24 rotatory periphery counter-rotation that can drive reversing device of transmission shaft, the output axle head of through-hole fixed connection motor 7 of the 2 top surfaces of the reation kettle body is passed on 24 tops of upside transmission shaft, the inner wall of the reation kettle body 2 is connected through the pivot in the bottom of downside transmission shaft 24, the inside of the reation kettle body 2 is equipped with (mixing) shaft 6 with 24 concentric lines of transmission shaft, (mixing) shaft 6 is located between two reversing device, the both ends of (mixing) shaft 6 are the axle head of the transmission shaft 24 that fixed connection is neighbouring respectively, reversing device's periphery is equipped with the first blade 14 of several respectively, the even fixed mounting of the first blade 14 of downside is in downside reversing device's periphery, the vertical recess 15 of several is seted up to upside reversing device's periphery, recess 15 and the first blade 14 one-to-side, be equipped with gag lever 16 in the recess 15 respectively, the inner wall of hinged joint recess 15 is passed through to gag lever 16's one In the groove 15, the first blade 14 of upside has been seted up spout 17 respectively near the side middle part of upside reversing device, be equipped with slider 18 in the spout 17 respectively, slider 18 can slide along corresponding spout 17, the other end of gag lever post 16 is respectively through the slider 18 that hinged joint corresponds, be equipped with the horizontal second blade 19 of several between two reversing devices, the even fixed mounting of second blade 19 is in the periphery of (mixing) shaft 6, the horizontal length of second blade 19 outwards degressively in proper order from the middle part of (mixing) shaft 6. The utility model realizes the reverse stirring of the first blade 14 and the second blade 19 through the reversing device, increases the flow direction variability of the reaction liquid, and makes the reaction liquid mix more quickly and fully, when in use, the reaction liquid enters the reaction kettle body 2 through the feed inlet 4, the worker starts the motor 7 to make the output shaft rotate anticlockwise, the motor 7 drives the transmission shaft 24 of the upside reversing device to rotate anticlockwise, the transmission shaft 24 of the upside drives the stirring shaft 6 to rotate anticlockwise, the stirring shaft 6 drives the second blade 19, the transmission shaft 24 of the downside rotates anticlockwise, the second blade 19 drives the reaction liquid around to rotate anticlockwise, meanwhile, the reversing device respectively drives the corresponding first blade 14 to rotate clockwise, the first blade 14 of the upside simultaneously rotates by taking the corresponding rotating shaft as the axis under the action of the centrifugal force, the rotating track of the first blade 14 of the upside is oblique under the driving of the centrifugal force and the upside reversing device, the centrifugal force makes the reaction kettle turn upwards by taking the rotating shaft as the center, the reversing device drives the reaction kettle to rotate by taking the stirring shaft 6 as the center, the stirring range of the first blade 14 at the upper part is larger, the reaction raw material which is filled later is diffused more quickly, the raw material which is filled later is concentrated around the feed inlet 4 after entering the reaction kettle body 2, the liquid at the upper part of the reaction kettle body 2 has the tendency of flowing downwards by the first blade 14 at the upper part, the liquid at the bottom of the reaction kettle body 2 has the tendency of flowing upwards by the first blade 14 at the lower part, and the horizontal direction of the second blade 19 is stirred, so that the flowing direction of the reaction liquid is three-dimensional and variable, turbulence is formed, the hydrophilic groups and the hydrophobic groups in the reaction liquid are combined more quickly and fully under the resultant force stirring of the first blade 14 and the second blade 19, and the finished product speed of the surfactant is accelerated, thereby improving the production efficiency and the first blade 14 at the lower side plays a role of preventing the reactant from settling while driving the reaction liquid to spirally move upward.

Specifically, as shown in fig. 1, the reversing device according to this embodiment is respectively composed of a disc-shaped housing 23, a plurality of first gears 8, a plurality of second gears 12, a first bearing 9, a second bearing 10, a ring-shaped plate 11, a transmission shaft 24, and a sealing device 13, wherein the inner wall of the housing 23 is respectively and fixedly connected to the outer peripheries of the corresponding ring-shaped plates 11, the inner part of the inner ring of the ring-shaped plate 11 is respectively and fixedly connected to the outer periphery of the second bearing 10, the inner ring of the second bearing 10 is respectively and fixedly connected to the outer periphery of the corresponding first bearing 9, the inner ring of the first bearing 9 is respectively and fixedly connected to the outer periphery of the corresponding transmission shaft 24, the top and bottom surfaces of the housing 23 are respectively provided with through holes collinear with the center line, two ends of the transmission shaft 24 respectively penetrate through the corresponding through holes, the outer periphery of the transmission shaft 24 is respectively and fixedly connected to the, the second gears 12 are respectively meshed with the corresponding first gears 8, the first gears 8 are respectively fixedly mounted on the inner wall of the shell 23 through rotating shafts, tooth grooves are formed in the outer portions of the inner rings of the annular plates 11 and are respectively matched with the corresponding first gears 8 in a tooth pattern mode, and the sealing devices 13 are located in through holes of the shell 23 and are tightly matched with the inner walls of the through holes and the periphery of the transmission shaft 24. The device makes transmission shaft 24 when atress anticlockwise rotation, casing 23 clockwise rotation, reach the purpose of conversion direction of motion, between second gear 12 and the first gear 8, the insection meshing between first gear 8 and the annular plate 11 has changed the drive ratio, thereby realize the differential rotation of reversal device periphery and transmission shaft 24, first blade 14 and second blade 19 produce different rotation direction and rotation speed under the drive of same motor 7, it is faster, more abundant to make reaction liquid mix, the reaction efficiency of raw materials is improved.

Specifically, as shown in fig. 1, the first blade 14 of the present embodiment is a turbine blade, the blade rotation direction of the first blade 14 is clockwise, and the second blade 19 is a transverse rectangular blade. First blade 14 adopts turbine blade can produce the oblique power for reaction liquid, makes reaction liquid ability heliciform flow, and second blade 19 enables reaction liquid horizontal rotation flow for vertical rectangular blade, through reversal, differential of reversing device, and first blade 14 makes reaction liquid flow direction three-dimensional, changeable with the stirring of second blade 19, makes reaction material faster, more abundant contact, has improved reaction efficiency.

Further, as shown in fig. 1, a spring 21 is provided between the first blade 14 and the upper annular plate 11. Spring 21 can play the hindrance effect when using the pivot to rotate upwards at the first blade 14 of upside to reduce the upset speed of the first blade 14 of top, prevent that the first blade 14 of top from making slider 18 periphery and spout 17 violently collide because of centrifugal force overturn fast, causing equipment to damage, influence production efficiency.

Further, as shown in fig. 1, the sealing device 13 of the present embodiment is a non-contact sealing member. The non-contact sealing element is suitable for severe working conditions, particularly the condition that high speed is required to be kept under low friction, and the non-contact sealing device is not in contact with a shaft and generates no friction, so that the sealing effect is achieved, and the service life of equipment elements is prolonged.

Furthermore, as shown in fig. 1, the outer wall of the top surface of the reaction vessel body 2 and the top surface of the sealing cover 5 are respectively provided with a hanging ring 22. Rings 22 provide the impetus for the handling of the reation kettle body 2, opening of sealed lid 5, and the workman uses the workshop car to hang can the handling reation kettle body 2, uses manpower sparingly, and rings 22 of the 2 top surfaces of the reation kettle body can also support for it when sealed lid 5 is opened, and the practicality is stronger.

Furthermore, as shown in fig. 1, a plurality of support rings 20 arranged in a threaded manner are disposed on the periphery of the reaction kettle body 2, and a temperature control tube is disposed inside the support rings 20. Whether the external temperature control pipe is arranged can be selected according to the requirements of normal temperature, heating, cooling and the like of the actual reaction conditions when the device is used by workers, so that the practicability of the device is higher.

Further, as shown in fig. 1, the number of the first gears 8 in the reversing device according to the present embodiment is greater than 3. The second gear 12 drives the first gear 8 to rotate, the first gear 8 rotates to drive the annular plate 11 to rotate, the number of the first gears 8 is larger than 3, so that the stress of the second gear 12 and the stress of the annular plate 11 are more uniform, the transmission is more stable, the damage of equipment elements caused by unstable transmission is reduced, and the service life of the equipment is prolonged.

Further, as shown in fig. 1, the motor 7 according to the present embodiment is a variable speed motor. The rotational speed of buncher can be adjusted, and the rotational speed is big then centrifugal force is big, and first blade 14 is close to the top of the reation kettle body 2 more, and the rotational speed is little then centrifugal force, and the top of the reation kettle body 2 is slightly kept away from to first blade 14, changes the rotational speed and can make first blade 14 revolute the pivot swing to can increase the area of operation of the first blade 14 of upside, stirring liquid that can be better improves reaction rate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a depressurization increases and annotates surfactant reaction kettle agitating unit which characterized in that: comprises a pedestal (1), the top surface of the pedestal (1) is fixedly provided with the bottom surface of a reaction kettle body (2), the bottom of the reaction kettle body (2) is provided with a liquid outlet (3), the top surface of the reaction kettle body (2) is provided with a plurality of feed inlets (4), the upper parts of the feed inlets (4) are respectively provided with a sealing cover (5), the sealing covers (5) are respectively and fixedly arranged on the top surface of the reaction kettle body (2) through hinges, the sealing covers (5) respectively seal the corresponding feed inlets (4), the top surface of the reaction kettle body (2) is fixedly provided with a motor (7) with a downward output shaft, the middle part of the top surface of the reaction kettle body (2) is provided with a through hole, the inside of the reaction kettle body (2) is provided with two vertical reversing devices with collinear central lines, the middle part of each reversing device is provided with a transmission shaft (24), the transmission shaft (24) can rotate to drive the periphery of the reversing device to reversely rotate, the bottom end of the lower side transmission shaft (24) is connected with the inner wall of the reaction kettle body (2) through a rotating shaft, a stirring shaft (6) which is concentric with the transmission shaft (24) is arranged in the reaction kettle body (2), the stirring shaft (6) is positioned between two reversing devices, two ends of the stirring shaft (6) are respectively and fixedly connected with shaft ends of adjacent transmission shafts (24), the peripheries of the reversing devices are respectively provided with a plurality of first blades (14), the first blades (14) on the lower side are uniformly and fixedly arranged on the periphery of the lower side reversing device, the periphery of the upper side reversing device is provided with a plurality of vertical grooves (15), the grooves (15) are in one-to-one correspondence with the first blades (14) on the upper side, limiting rods (16) are respectively arranged in the grooves (15), one end of each limiting rod (16) is connected with the inner wall of each groove (15) through a hinge, the lower end of one side, which is close to the, the first blade of upside (14) is close to the side middle part of upside reversing device and has been seted up spout (17) respectively, be equipped with slider (18) in spout (17) respectively, slider (18) can slide along corresponding spout (17), the other end of gag lever post (16) is respectively through slider (18) that hinged joint corresponds, be equipped with several horizontal second blade (19) between two reversing devices, the even fixed mounting of second blade (19) is in the periphery of (mixing) shaft (6), the horizontal length of second blade (19) outwards degressive in proper order from the middle part of (mixing) shaft (6).

2. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 1, wherein: the reversing device is respectively composed of a disc-shaped shell (23), a plurality of first gears (8), a second gear (12), a first bearing (9), a second bearing (10), an annular plate (11), a transmission shaft (24) and a sealing device (13), wherein the inner wall of the shell (23) is respectively and fixedly connected with the periphery of the corresponding annular plate (11), the inner part of the inner ring of the annular plate (11) is respectively and fixedly connected with the periphery of the second bearing (10), the inner ring of the second bearing (10) is respectively and fixedly connected with the periphery of the corresponding first bearing (9), the inner ring of the first bearing (9) is respectively and fixedly connected with the periphery of the corresponding transmission shaft (24), through holes collinear with the center line are respectively formed in the top surface and the bottom surface of the shell (23), two ends of the transmission shaft (24) respectively penetrate through the corresponding through holes, the periphery of the transmission shaft (24) is respectively and fixedly connected with the inner ring of the corresponding second gear, first gear (8) respectively even distribution correspond around second gear (12), second gear (12) respectively with the meshing of first gear (8) that correspond, first gear (8) are respectively through pivot fixed mounting at the inner wall of casing (23), the tooth's socket has all been seted up to the inner circle outside of annular plate (11) and respectively with the cooperation of the first gear (8) insection that corresponds, sealing device (13) are located the through-hole of casing (23) and with the through-hole inner wall, transmission shaft (24) periphery closely cooperates.

3. The stirring device of the reactor for reducing pressure and increasing injection of the surfactant according to claim 1 or 2, which is characterized in that: the first blade (14) is a turbine blade, the blade turning direction of the first blade (14) is clockwise, and the second blade (19) is a transverse rectangular blade.

4. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 1, wherein: a spring (21) is arranged between the first blade (14) at the upper side and the upper side annular plate (11).

5. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 2, wherein: the sealing device (13) is a non-contact sealing element.

6. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 1, wherein: the outer wall of the top surface of the reaction kettle body (2) and the top surface of the sealing cover (5) are respectively provided with a hanging ring (22).

7. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 1, wherein: the periphery of the reaction kettle body (2) is provided with a plurality of support rings (20) which are arranged in a threaded manner, and a temperature control pipe is arranged inside each support ring (20).

8. The stirring device of the reactor for reducing pressure and increasing injection of the surfactant according to claim 1 or 2, which is characterized in that: the number of the first gears (8) in the reversing device is more than 3.

9. The stirring device of the reaction kettle for reducing pressure and increasing injection of the surfactant according to claim 1, wherein: the motor (7) is a speed-regulating motor.