Rotary mixer in an injection machine for a two-liquid mixture

Abstract

Rotary mixer attached to the head section (B) of an injection machine for a multi-liquid mixture, the rotary mixer being characterized in that a drive rotor (2) and two driven rotors (3, 3a) are accommodated side by side inside a housing (1), an upper opening section of the housing (1) is closed with a cover body (4), the housing (1) has a mixing chamber (5) for accommodating the drive rotor (2) and the driven rotors (3, 3a), two inlet channels (13, 13a) for chemical liquids are formed on an upper section of the housing to form outlet openings to an upper section of the mixing chamber (5), and simultaneously a drain channel (14) for the mixed liquid is formed on a lower section of the housing, the mixing chamber (5) is designed such that the drive rotor (2) and the driven rotors (3,3a) are rotatable and the positions of the drive rotor (2) and the driven rotors (3, 3a) can be regulated, the drive rotor (2) has a drive rotor main body (8) with a spiral blade (10) and a connecting section (9) which is formed integrally on an upper section of the drive rotor main body (8) and penetrates the cover body (4), the driven rotors (3, 3a) consist only of a main body of the driven rotor (3, 3a) with a spiral blade (10), wherein the spiral blade (10) is wound in reverse with the same pitch as the spiral blade (10) of the drive rotor (2), the cover body (4) closes the upper opening section of the mixing chamber (5) and a through-opening (12) for the connecting section (9) is formed in the middle, wherein the drive rotor (2) and the driven rotors (3, 3a) are brought into engagement with each other, in the condition,in which the lower end of the driven rotors (3, 3a) is located above the bottom section of the mixing chamber (5) and the upper end is located below the lower surface of the cover body, accompanied by a rotation of the drive rotor (2), the driven rotors (3, 3a) are capable of rotation in the opposite direction at the fixed position, wherein one of the inlet channels (13, 13a) for chemical liquids is configured such that it extends from an inlet on an outer surface of the housing (1) to an outlet opening in the middle of an upper section of the mixing chamber (5), so that one of the chemical liquids can be injected from an upper section into a receiving area of ​​the drive rotor (2) in the mixing chamber (5), and the other of the inlet channels (13, 13a) for chemical liquids is configured such thatthat it extends from an inlet on an outer surface of the housing (1) downstream into two parts to outlet openings on both sides of the upper section of the mixing chamber (5), so that the other of the chemical liquids can be injected from an upper section into a receiving area of ​​the driven rotors (3, 3a) in the mixing chamber (5).

Description

[Technical field]

[0001] The present invention relates to a rotary mixer in an injection machine for a multi-liquid mixture, which mixes and dispenses two types of chemical liquids during casting, molding, painting or the like. [State of the art]

[0002] Traditionally, mixers equipped with a single drive rotor and several driven rotors for mixing two types of liquids are available in the following configurations: those having a single "central spindle" (hereinafter referred to as the drive rotor) and 12 "planet spindles" (hereinafter referred to as driven rotors), wherein two types of liquids are injected into a "chamber" (hereinafter referred to as the mixing chamber) through "bore 19, 26" (hereinafter referred to as chemical liquid inlet channels) formed on an upper section of a "housing" (hereinafter referred to as the casing), and a mixed liquid is discharged from a lower section of the casing (see, for example, patent document 1); or those having a "drive shaft" (hereinafter referred to as the drive rotor) and 10 "conveying shafts" (hereinafter referred to as driven rotors).wherein a feed aperture (hereinafter referred to as chemical liquid inlet channel) and flange (hereinafter referred to as chemical liquid inlet channel) formed on an upper section of a housing (hereinafter referred to as housing) in which two types of liquids are injected into a chamber (hereinafter referred to as mixing chamber) and a mixed liquid is discharged from the lower section of the housing (see, for example, patent document 2). [Previous state documents][Patent documents]

[0003] German patent application DE 10 2015 105 303 A1 discloses a generic rotary mixer in a multi-fluid mixing type injection machine, in which two or more types of chemical liquids are mixed and dispensed during casting, molding, painting, or the like. Furthermore, German patent application DE 1 545 043 A1 describes a device for the continuous production of high-viscosity reaction products by polycondensation with a stirring and feeding device. Other prior art documents include: Patent document 1: US 5,106,198 A, Detailed description Patent document 2: US 5,108,711 A, Detailed description [Summary of the invention][Problem to be solved by the invention]

[0004] However, since in the aforementioned prior art the drive rotor and the driven rotors that engage with the drive rotor constitute a so-called "planetary gear mechanism", an internal gear (see "10a" in) must be installed in the housing. Fig. 4 of patent document 1 and “24” in Fig. 3 of the patent document 2) are formed, which complicates the structure of the housing, which is one of the problems to be solved. [Means to solve the problem]

[0005] Based on the conventional technology described above, this invention addresses the problem that a planetary gear mechanism requires an internal gear in the housing and solves this problem by means of a rotary mixer with the features of claim 1. In particular, the problem is solved by accommodating a single drive rotor and two driven rotors side by side inside the housing, wherein an upper opening section of the housing is closed with a cover body, wherein the housing has a mixing chamber for accommodating the drive rotor and the driven rotors, wherein two inlet channels for chemical liquids are formed on an upper section of the housing to form outlet openings to an upper section of the mixing chamber, and simultaneously a drain channel for the mixed liquid is formed on a lower section of the housing, wherein the mixing chamber is configured as follows:that the drive rotor and the driven rotors are rotatable and the positions of the drive rotor and the driven rotors can be regulated, wherein the drive rotor has a drive rotor main body with a spiral blade and a connecting section which is formed integrally on an upper section of the drive rotor main body and penetrates the cover body, wherein the driven rotors consist only of a main body of the driven rotor with a spiral blade and this spiral blade is wound in reverse with the same pitch as the spiral blade of the drive rotor, wherein the cover body closes the upper opening section of the mixing chamber and a through-opening for the connecting section is formed in its center, wherein by engaging the drive rotor and the driven rotors with each other, in the state,in which the lower end of the driven rotors is located above the bottom section of the mixing chamber and the upper end is located below the lower surface of the cover body, and in conjunction with a rotation of the drive rotor, the driven rotors are capable of rotation in the opposite direction at a fixed position, thus enabling rotation at a fixed position without any measures being taken in the housing to maintain the position of the driven rotors within the mixing chamber. This is achieved simply by virtue of the fact that the driven rotors are engaged with the drive rotor within the mixing chamber. Since one of the inlet channels for chemical liquids is designed to extend from an inlet on an outer surface of the housing to an outlet opening in the center of an upper section of the mixing chamber,so that one of the chemical liquids can be injected from an upper section into a receiving area of ​​the drive rotor in the mixing chamber, and the other of the inlet channels for chemical liquids is designed to branch out from an inlet on an outer surface of the housing downstream into two parts to outlet openings on both sides of the upper section of the mixing chamber, so that the other of the chemical liquids can be injected from an upper section into a receiving area of ​​the driven rotors in the mixing chamber, it is possible to distribute the two types of chemical liquids immediately throughout the entire mixing chamber and mix them with the three rotors, so that the two types of chemical liquids can be stirred and mixed even more reliably and the practical effect is extraordinarily large. [Effect of the invention]

[0006] In short, because in the present invention a drive rotor and two driven rotors are accommodated side by side inside the housing, wherein an upper opening section of the housing is closed with a cover body, wherein the housing has a mixing chamber for accommodating the drive rotor and the driven rotors, wherein two inlet channels for chemical liquids are formed on an upper section of the housing to form outlet openings to an upper section of the mixing chamber, and simultaneously a drain channel for the mixed liquid is formed on a lower section of the housing, wherein the mixing chamber is designed such that the drive rotor and the driven rotors are rotatable and the positions of the drive rotor and the driven rotors can be regulated, wherein the drive rotor has a drive rotor main body with a spiral blade,which is formed over the entire vertical direction, and has a connecting section which is formed integrally on an upper section of the drive rotor main body and penetrates the cover body, wherein the driven rotors consist only of a main body of the driven rotor with a spiral blade which is formed over the entire vertical direction, and this spiral blade is wound in reverse with the same pitch as the spiral blade of the drive rotor, wherein the cover body closes the upper opening section of the mixing chamber and a through-opening for the connecting section is formed in the middle, in the device of the present application with three rotors inside the mixing chamber, the two types of liquids pumped under pressure from top to bottom can be reliably stirred and mixed when filled.so that efficient mixing is possible and curing can be advanced with good efficiency, thereby enabling the production of a product of optimal material quality in an appropriate quantity, whereas in the devices of patent documents 1 and 2, where in the case of patent document 1 the space between the driven rotors and the inner wall surface of the housing is large, so that only the chemical liquids flowing together in the vicinity of the driven rotors can be mixed, and in the case of patent document 2, even if mixing is only possible with the driven rotors, the flowing chemical liquids can only be mixed in the lower part of the mixing chamber because the majority of the inlet channels for chemical liquids are formed in the lower part of the mixing chamber,In both patent documents, the two types of chemical liquids injected into the mixing chamber cannot be mixed uniformly before being dispensed from the lower section of the housing, so that a homogeneous liquid mixture cannot be obtained.

[0007] Because the mixing chamber is designed such that the drive rotor and the driven rotors are rotatable, and the positions of the drive rotor and the driven rotors can be regulated, and the drive rotor and the driven rotors are engaged with each other, in the state where the lower end of the driven rotors is above the bottom section of the mixing chamber and the upper end is below the lower surface of the cover body, the driven rotors are rotatable in a fixed position in the opposite direction when the drive rotor rotates. This means that the driven rotors can be made rotatable in the fixed position simply by being held inside the mixing chamber in engagement with the drive rotor, thus eliminating the need for any measures inside the housing.to maintain the position of the driven rotors inside the mixing chamber, thereby simplifying the shape of the housing.

[0008] Since the drive rotor main body and the main bodies of the driven rotors are formed by integrally forming right-handed and left-handed spiral elements in a mold in which they alternate side by side in accordance with a spiral central axis, and since the spiral directions of the elements are reversed in the same stage in the drive rotor main body and the main bodies of the driven rotors, additional division, transformation, and reversal processes take place as the converging chemical fluids pass through the drive rotor main body and the main body of the driven rotors, thus enabling even more efficient mixing.

[0009] Since the direction of rotation of the drive rotor is opposite to the direction of rotation of the spiral elements of the uppermost stage, air does not accumulate in the upper section of the mixing chamber when the chemical liquids are briefly forced upwards immediately after injection into the housing. This prevents the converging chemical liquids, which remain inside the mixing chamber after the stop, from flowing outwards with force, allowing the conditions to remain well maintained in place. [Simple explanation of the characters] [ Fig. Figure 1] is a central longitudinal sectional view of a rotary mixer according to the invention. [ Fig. [2] is a central cross-sectional view of the rotary mixer of Fig. 1. [ Fig. Figure 3] is a horizontally sectioned side view of the rotary mixer from Fig. 1. [ Fig. Figure 4] is a top view of the rotary mixer of Fig. 1 in a state with the lid body removed. [ Fig. Figure 5 (a)] is a central longitudinal section view of the housing. [ Fig. Figure 5 (a)] is a central cross-sectional view of the housing. [ Fig. Figure 6] is a front view of a drive rotor and a driven rotor. [ Fig. Figure 7] is a longitudinal sectional view of embodiment 3 of a rotary mixer according to the invention. [Embodiments of the invention]

[0010] As in Fig. Figure 7 shows the rotary mixer according to the invention attached to a head section B of an injection machine for a two-liquid mixture A, and essentially comprises a housing 1, a single drive rotor 2, and two driven rotors 3 and 3a, which are accommodated side by side in the housing 1, and a cover body 4, which closes an upper opening section of the housing 1.

[0011] The housing 1 includes a mixing chamber 5 for receiving the drive rotor 2 and the driven rotors 3 and 3a, as well as a receiving chamber 6 for the cover body 4.

[0012] The mixing chamber 5 is designed so that the drive rotor 2 and the driven rotors 3 and 3a are capable of rotation and the positions of the drive rotor 2 and the driven rotors 3 and 3a can be regulated.

[0013] The drive rotor 2 comprises a drive rotor main body 8 with a spiral blade 7 (7a) and a connecting section 9, which is formed integrally on an upper section of the drive rotor main body 8, penetrates the cover body 4 and can be connected to the lower end of a drive shaft S on the side of a head section (not shown in the figures).

[0014] Each of the driven rotors 3 and 3a consists only of a main body of the driven rotor 11 with a spiral blade 10 (10a), wherein the main body of the driven rotor 11 is mirror-symmetrical to the drive rotor main body 8 and the spiral blade 10 (10a) is wound in reverse with the same pitch as the spiral blade 7 (7a) of the drive rotor 2, and by bringing the two into engagement, accompanied by a rotation of the drive rotor 2, the driven rotors 3 and 3a are capable of rotation in the opposite direction.

[0015] The lid body 4 is fitted into the receiving chamber 6 to close an upper opening section of the mixing chamber 5, with a through-opening 12 in the middle for the connecting section 9 of the drive rotor 2 being formed.

[0016] On the upper section of the housing 1, two inlet channels 13 and 13a are formed for the chemical liquids to form outlet openings to an upper section of the mixing chamber 5, and on the lower section of the housing 1, a drain channel 14 is formed for the mixed liquid.

[0017] One of the inlet channels for chemical liquids 13 is configured to extend from an inlet on an outer surface of the housing 1 to an outlet in the middle of the upper section of the mixing chamber 5, so that one of the chemical liquids can be injected from the upper section into a region of the drive rotor 2 in the mixing chamber 5, and the other of the inlet channels for chemical liquids 13a is configured to extend from an inlet on an outer surface of the housing 1 downstream into two parts to outlets on both sides of the upper section of the mixing chamber 5, so that the other of the chemical liquids can be injected from the upper section into a region of the driven rotors 3 and 3a in the mixing chamber 5, so that the two types of chemical liquids can be mixed in a state filled in the mixing chamber 5 by the drive rotor 2 and the driven rotors 3 and 3a. [Example of implementation] 1

[0018] As in the Fig. As shown in Figures 1 to 4, a rotary mixer according to the invention comprises a housing 1 made of plastic, arranged side by side and made of plastic, a central drive rotor 2 and driven rotors 3 and 3a, which are arranged on both sides of the drive rotor 2 with the same diameter as the drive rotor 2, and a lid body 4 made of plastic.

[0019] As in the Fig. 5 (a) and Fig. As shown in Figure 5 (b), the housing 1 has a receiving space 6 for the lid body 4, the diameter of which is larger than the long width of the mixing space 5 and which is designed as a flat cylindrical space concentric to the center of the mixing space 5.

[0020] As in Fig. As shown in Figure 3, the mixing chamber 5 is formed by arranging three cylindrical spaces 17, 18 and 18a, each with a diameter slightly larger than that of the drive rotor 2 and the driven rotors 3 and 3a, partially overlapping and next to each other.

[0021] As in Fig. As shown in Figure 6, the drive rotor 2 comprises a one-piece drive rotor main body 8, in which three left-handed spiral elements 21, 21a and 21b with two spiral blade elements 20 and 20a are arranged side by side in a state rotated 180° clockwise and two right-handed spiral elements 23 and 23a with two spiral blade elements 22 and 22a are arranged side by side in a state rotated 180° counterclockwise in the direction of the spiral axis, their angles changing by 90° each, and a connecting section 9 above the drive rotor main body 8.

[0022] The arrangement of the spiral leaf element 20 of the left-handed spiral elements 21, 21a and 21b and the spiral leaf element 22 of the right-handed spiral elements 23 and 23a forms one spiral leaf 7 and at the same time the arrangement of the spiral leaf element 20a of the left-handed spiral elements 21, 21a and 21b and the spiral leaf element 22a of the right-handed spiral elements 23 and 23a forms the other spiral leaf 7a.

[0023] As in Fig. As shown in Figure 6, the driven rotors 3 and 3a are mirror-symmetrical to the main body 8 of the drive rotor 2 and consist only of the main body of the driven rotor 11, which in turn consists only of three right-handed spiral elements 23, 23a and 23b and two left-handed spiral elements 21 and 21a.

[0024] The arrangement of the spiral leaf element 22 of the right-handed spiral elements 23, 23a and 23b and the spiral leaf element 20 of the left-handed spiral elements 21 and 21a forms one spiral leaf 10 and at the same time the arrangement of the spiral leaf element 22a of the right-handed spiral elements 23, 23a and 23b and the spiral leaf element 20a of the left-handed spiral elements 21 and 21a forms the other spiral leaf 10a.

[0025] Furthermore, it is preferred that the drive rotor 2 rotates through the drive shaft S in the opposite direction to the spiral direction of the element of the uppermost stage (in the figure the left-handed spiral element 21), and concomitantly the driven rotors 3 and 3a also rotate in the opposite direction to the spiral direction of the element of the uppermost stage (in the figure the right-handed spiral element 23), so that air does not accumulate in the upper section of the mixing chamber 5 because the chemical liquids are briefly forced upwards immediately after injection into the housing 1.

[0026] One of the inlet channels for chemical liquids 13 is a straight horizontal cavity, which is provided with an inlet on the outer surface of the housing 1 and an outlet on the central upper section of the mixing chamber 5, wherein an outlet is formed on an ascending surface of a lowered section 26, which is formed on the opening edge section of the central cylindrical space 17 of a step section 25 at the boundary between the mixing chamber 5 and the receiving chamber 6.

[0027] The other inlet channel for chemical liquids 13a is formed by a lowered section 27, which is formed between the inner wall surface of the housing 1 and the central cylindrical space 17 at a location opposite the location where the lowered section 26 is formed in the stage section 25 at the boundary between the mixing chamber 5 and the receiving chamber 6, a straight cavity 28 which forms an inlet on the side opposite the inlet of one inlet channel for chemical liquids 13 of the housing 1 and an outlet on the lowered section 27, grooves 29 and 29a which are formed such that they extend from the two side sections of the lowered section 27 in the boundary stage section 25 to the cylindrical spaces 18 and 18a on both sides, and the cover body 4 which is in close contact with the boundary stage section 25.

[0028] Furthermore, in the other lowered section 27, a branching projection 30 with a triangular shape in horizontal section is formed on the surface opposite the surface on which the outlet of the cavity 28 is formed, so that the branching of the other chemical liquid flowing from the cavity 28 into the lowered section 27 is facilitated.

[0029] The drain channel for the mixed liquid 14 is designed to pass through a nozzle mounting section 31, which protrudes downwards in the middle of the lower section of the housing 1, so that the mixed liquid located inside the mixing chamber 5 can be discharged to the outside.

[0030] A groove 35 for an O-ring 34 is formed in an intermediate section of the through-opening 12 of the cover body 4, and the O-ring 34 received in the groove 35 is brought into close contact with the outer circumferential surface of the connection section 9 in an elastically deformed state, enabling the drive rotor 2 to maintain the function of sealing the chemical fluid while it is rotatable.

[0031] The lid body 4, in the state in which it is fitted into the receiving chamber 6, is in close contact with the limit stage section 25 and the inner surface of the housing 1.

[0032] Furthermore, the drive rotor main body 8 and the main bodies of the driven rotors 11 preferably form a composition of several left-handed spiral elements 21, 21a... and right-handed spiral elements 23, 23a..., but it can also be, for example, a single unit with spiral blades that are continuously formed in one piece over the entire vertical direction, which, however, is not shown in the figures.

[0033] Furthermore, in the figures the mixing chamber 5 is formed by arranging the three cylindrical spaces 17, 18 and 18a partially overlapping next to each other, but although not shown in the figures, it is also possible, for example, to choose a shape that is racetrack-shaped in cross-section, wherein the long width is set so that a tiny gap can be formed between both ends of the driven rotors 3 and 3a and at the same time the short width is set so that a tiny gap can be formed between the drive rotor 2 and the driven rotors 3 and 3a.

[0034] The following explains the functioning of the rotary mixer according to the invention.

[0035] When the drive rotor 2 is set into rotation, the driven rotors 3 and 3a are simultaneously set into rotation in the opposite direction, and the two types of chemical liquids, which are pumped in under pressure by means for pressure pumping chemical liquids (not shown in the figures) connected to the inlet of the inlet channels for chemical liquids 13 and 13a of the housing 1, flow together in the mixing chamber 5.

[0036] In particular, one of the chemical liquids is injected from above into the central cylindrical space 17 via the one lowered section 26 through the one lowered section 26, and the other chemical liquid is injected from above into the lateral cylindrical spaces 18 and 18a via the cavity 28, the other lowered section 27 and the grooves 29 and 29a, through which the other chemical liquid inlet 13a is formed.

[0037] The chemical liquids, which have been continuously pumped together by the means for pumping chemical liquids (not shown in the figures), pass through the interior of the housing 1 in a state filled with the mixing chamber 5. The housing 1 contains the drive rotor 2 and the driven rotors 3 and 3a, which rotate. The liquids flow through the interior of the housing 1 towards its front end. During this process, the two types of chemical liquids are efficiently mixed by the drive rotor 2 and the two driven rotors 3 and 3a, i.e., a total of three. This efficiently promotes curing, triggering a chemical reaction. A cured resin is then extruded from a nozzle 7 located at the front end of the housing 1 and used for various purposes.

[0038] The drive rotor 2 and the driven rotors 3 and 3a have a similar shape to the internal elements of a so-called "static mixer", and by using this shape the stirring and mixing efficiency of the mixed liquid is improved.

[0039] Furthermore, it is preferred that the drive rotor 2 rotates in the opposite direction to the spiral direction of the element of the uppermost stage (in the figure the right-handed spiral element 21) and, consequently, the driven rotors 3 and 3a also rotate in the opposite direction to the spiral direction of the element of the uppermost stage (in the figure the left-handed spiral element 23), so that, because the chemical liquids are briefly forced upwards immediately after injection into the housing 1, air does not accumulate in the upper section of the mixing chamber 5, so that the chemical liquid remaining after the stop does not flow outwards with force.

[0040] Furthermore, it is assumed that the rotary mixer according to the invention is used as a non-cleanable type, which is removed and disposed of after completion of the work of injecting the curing resin, but it is also possible to use it as a cleanable type, which is cleaned and reused.

[0041] A comparative experiment was carried out between the mixer according to the invention (new mixer) and the conventional mixer.

[0042] The new mixer comprises a single drive rotor equipped with five elements and two driven rotors, each rotor having a diameter of 6 mm and a length of 17.5 mm.

[0043] The conventional mixer used was the one known under the product name “WONDER MIX SNP-M” (main rotor diameter 18 mm, length 52 mm), which is a product of Nippon Sosei Co., Ltd., the applicant of the present application.

[0044] The substance to be mixed consisted of 6.8 Pa · s of an aqueous solution of starch syrup, wherein one chemical liquid consisted of an aqueous solution of starch syrup colored with iodine-potassium iodide solution and the other chemical liquid consisted of an aqueous solution of starch syrup in which sodium thiosulfate was dissolved, the amount added being 0.25 cm in each case. 3 / s, so a total of 0.5 cm 3 / s fraud.

[0045] The speed of the mixer was set to 100 rpm, and the mixing process within the device was made visible by the decolorization method, which showed that with the new mixer, the mixed liquid was transparent in the vicinity of the inlet of the two liquids and consequently the mixing was complete, whereas with the conventional mixer, after completion of the mixing process, some iodine color remained at the outlet and the mixing was not complete.

[0046] In general, laminar mixing in a mixer is evaluated based on the dimensionless mixing time (total number of revolutions, which is the product of the time to complete mixing and the number of revolutions of the device), but since the evaluation in this experiment is performed with the same flow rate, if the same number of revolutions is used, it is possible to evaluate the mixing based on the distance from the inlet inside the mixer.

[0047] Consequently, the new mixer is considered superior. [Explanation of reference symbols] 1 case 2 drive rotors 3, 3a driven rotor 4 lid bodies 5 Mixing room 7 spiral sheets 8 Drive rotor main body 9 Connecting section 10 spiral sheets 11 Main body of the driven rotor 12. Passage opening 13, 13a Inflow channel 14 Drainage channel 21, 21a... left-handed spiral-shaped elements 23, 23a... clockwise spiral elements An injection machine for a multi-liquid mixture B Head section

Claims

[1] Rotary mixer attached to the head section (B) in an injection machine for a multi-liquid mixture, wherein the rotary mixer characterized byThe design consists of a housing (1) in which a drive rotor (2) and two driven rotors (3, 3a) are accommodated side by side, an upper opening section of the housing (1) is closed with a cover body (4), the housing (1) has a mixing chamber (5) for accommodating the drive rotor (2) and the driven rotors (3, 3a), two inlet channels (13, 13a) for chemical liquids are formed on an upper section of the housing to form outlet openings to an upper section of the mixing chamber (5), and simultaneously a drain channel (14) for the mixed liquid is formed on a lower section of the housing, the mixing chamber (5) is designed such that the drive rotor (2) and the driven rotors (3, 3a) are rotatable and the positions of the drive rotor (2) and the driven rotors (3, 3a) can be regulated.the drive rotor (2) comprises a drive rotor main body (8) with a spiral blade (10) and a connecting section (9) which is formed integrally on an upper section of the drive rotor main body (8) and penetrates the cover body (4), the driven rotors (3, 3a) consist only of a main body of the driven rotor (3, 3a) with a spiral blade (10), wherein the spiral blade (10) is wound in reverse with the same pitch as the spiral blade (10) of the drive rotor (2), the cover body (4) closes the upper opening section of the mixing chamber (5) and a through-opening (12) for the connecting section (9) is formed in the center, wherein, by engaging the drive rotor (2) and the driven rotors (3, 3a) with each other, in the state in which the lower end of the driven rotors (3,3a) above the bottom section of the mixing chamber (5) and the upper end below the lower surface of the cover body, accompanied by a rotation of the drive rotor (2), the driven rotors (3, 3a) are capable of rotation in the opposite direction at the fixed position, wherein one of the inlet channels (13, 13a) for chemical liquids is configured such that it extends from an inlet on an outer surface of the housing (1) to an outlet opening in the middle of an upper section of the mixing chamber (5), so that one of the chemical liquids can be injected from an upper section into a receiving area of ​​the drive rotor (2) in the mixing chamber (5), and the other of the inlet channels (13, 13a) for chemical liquids is configured such thatthat it extends from an inlet on an outer surface of the housing (1) downstream into two parts to outlet openings on both sides of the upper section of the mixing chamber (5), so that the other of the chemical liquids can be injected from an upper section into a receiving area of ​​the driven rotors (3, 3a) in the mixing chamber (5). [2] Rotary mixer according to claim 1, characterized by , that the drive rotor main body (8) and the main bodies of the driven rotors (3, 3a) are formed by forming right-handed spiral elements (23, 23a) and left-handed spiral elements (21, 21a) in one piece in a shape in which they alternate side by side in accordance with a spiral central axis, and in the drive rotor main body (8) and the main bodies of the driven rotors (3, 3a) the spiral directions of the elements are reversed in the same stage. [3] Rotary mixer according to claim 2, characterized by , that the direction of rotation of the drive rotor is opposite to the direction of rotation of the spiral element of the uppermost stage.

Images