Automatic mixing and dispensing device for glue A and glue B

Abstract

The invention provides an automatic AB glue mixing and dispensing device, and relates to the technical field of dispensing machines. The automatic AB glue mixing and dispensing device comprises a dispensing machine shell, a conveying mechanism is arranged at the lower end of the inner side of the dispensing machine shell, a moving assembly is arranged on the inner side of the upper end of the dispensing machine shell, a glue filling opening is fixedly connected to the upper end of the dispensing machine shell, an operation shell is arranged on the surface of the moving assembly, and a glue filling pipe is arranged at the upper end of the operation shell in a penetrating mode; the lower end of the glue filling pipe is fixedly connected with a mixing cylinder. According to the automatic AB glue mixing and dispensing device, the mixing shaft is arranged on the inner side of the mixing cylinder for rotary stirring, glue solutions of AB glue can be longitudinally and rotationally mixed, the stirring shaft is arranged to rotate on the inner side of the stirring cylinder, the glue solutions of the AB glue can be transversely overturned and stirred, the glue solutions are mixed and stirred in different directions, and the glue solution mixing and dispensing efficiency is improved. The glue solution can be fully mixed, the effect of fully mixing the glue solution A and the glue solution B is achieved, and the problem of non-uniform mixing caused by wire drawing due to a single stirring mode is solved.

Description

Technical Field

[0001] This invention relates to the field of dispensing machine technology, specifically to an automatic AB glue mixing and dispensing device. Background Technology

[0002] AB adhesive, also known as two-component mixed curing adhesive, is a two-component adhesive composed of acrylic, epoxy, or polyurethane components. Component A is acrylic-modified epoxy resin or epoxy resin, and component B is a modified amine curing agent. They need to be mixed in a 1:1 ratio and cured at room temperature. Initial curing occurs in 5 minutes at 25°C, and higher temperatures can shorten the curing time. This adhesive is suitable for industrial bonding of materials such as plastics to metals and metals to metals, and is commonly used in motorcycle shells, automotive interior panels, and model making.

[0003] A search revealed Chinese patent CN116174259A, which discloses a dual-liquid semi-automatic glue supply device, including a glue dispensing component and a dispensing component. The glue dispensing component includes a bracket, a drive unit at the bottom of the bracket, an AB glue cylinder at the middle of the bracket, and a dual interface for the AB glue cylinder at the top of the bracket. The top of the glue outlet of the AB glue cylinder is connected to the dual interface of the AB glue cylinder. By setting up the glue dispensing component and the dispensing component, the glue dispensing component drives the AB glue cylinder to automatically dispense glue. The glue enters the AB glue dispensing valve through the feed pipe, is automatically and evenly mixed through the static mixing pipe, and is then extruded.

[0004] Existing automatic AB glue mixing and dispensing devices have a single stirring method, which easily leads to stringing and uneven glue mixing. Furthermore, the initial glue solution is unevenly mixed due to the different addition times of the AB glue and the limitations of the stirring method. Therefore, an automatic AB glue mixing and dispensing device is proposed to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic AB glue mixing and dispensing device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic AB glue mixing and dispensing device, comprising a dispensing machine housing, a conveying mechanism disposed at the lower inner end of the dispensing machine housing, a moving component disposed at the inner upper end of the dispensing machine housing, a glue inlet fixedly connected to the upper end of the dispensing machine housing, an operating shell disposed on the surface of the moving component, a glue dispensing tube passing through the upper end of the operating shell, a mixing cylinder fixedly connected to the lower end of the glue dispensing tube, a mixing shaft disposed inside the mixing cylinder, a stirring mechanism connected and passing through the lower end of the mixing cylinder for stirring and mixing the descending glue liquid, an extrusion cylinder fixedly connected to the outer side of the stirring mechanism, an extrusion assembly rotatably connected to the upper end of the extrusion cylinder, the extrusion assembly being connected to the stirring mechanism, a flipping component fixedly connected to the end of the extrusion cylinder, and a replaceable dispensing head threadedly connected to the lower end of the flipping component.

[0007] Preferably, the upper end of the mixing shaft is a spiral worm gear, and the lower end of the central shaft of the spiral worm gear is fixedly connected to a paddle wheel. The center of the paddle wheel is a round shaft, and two sets of paddles are fixedly arranged on the surface of the round shaft for pushing the adhesive liquid into the mixing cylinder.

[0008] Preferably, the stirring mechanism includes a stirring chamber, with the inner side of the stirring chamber fixedly connected to and passing through the stirring cylinder, the upper end of the stirring cylinder fixedly connected to and passing through the mixing cylinder, a stirring shaft rotatably connected to the inner side of the stirring cylinder, sealing covers provided on both sides of the stirring cylinder, the sealing covers being sleeved on the outer sides of both ends of the stirring shaft to seal and prevent glue leakage, and an active gear plate fixedly connected to the outer surface of the stirring shaft.

[0009] Preferably, the extrusion assembly includes a linkage ring, which is rotatably connected to and passes through the lower end of the mixing cylinder. The outer surface of the linkage ring is rotatably connected to the mixing chamber. A mating tooth is fixedly connected to the outer surface of the linkage ring. The mating tooth meshes with the active gear disc. Both the active gear disc and the mating tooth are wrapped inside the mixing chamber. An extrusion worm is fixedly connected to the inner side of the linkage ring.

[0010] Preferably, the stirring shaft includes a roller rod, which is composed of three round shafts. Roller columns are fixedly connected to both ends of the roller rod. The roller rod is disposed inside the stirring cylinder. The roller columns are rotatably connected to the sealing cover, and the active gear plate is fixedly connected to the surface of the roller columns.

[0011] Preferably, the flipping component includes a discharge pipe, and baffles are arranged in an array on the inner side of the discharge pipe. Two adjacent sets of baffles are staggered and the baffles are tilted toward the replaceable dispensing head to facilitate the flow of adhesive.

[0012] Preferably, the moving component includes a transverse screw, an adjustment platform is threadedly connected to the surface of the transverse screw, a longitudinal screw is provided inside the adjustment platform, and the longitudinal screw is threadedly connected to the operating housing.

[0013] Preferably, the dispensing tube is wrapped around the outer side of the lower end of the dispensing port, and the dispensing tube and the dispensing port are slidably connected and both are made of bendable material, which facilitates adaptation to changes in the position of the operating shell.

[0014] Preferably, the mixing cylinder includes a glue inlet section, which is connected to a glue dispensing pipe. The glue inlet section has an elliptical cross-section. The lower end of the glue inlet section is connected to a mixing section, which is cylindrical and wrapped around the outside of the spiral worm gear. The lower end of the mixing section is provided with a conical groove, and a paddle wheel is provided inside the conical groove. The conical groove is connected to the mixing cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This automatic AB glue mixing and dispensing device uses a mixing shaft inside the mixing cylinder to rotate and stir, allowing the AB glue solution to be mixed longitudinally. The stirring shaft also rotates inside the mixing cylinder, allowing the AB glue solution to be laterally tumbled and stirred. By mixing the glue solution in different directions, the solution is fully mixed, achieving the desired effect of thorough mixing of the AB glue solution. This solves the problem of uneven mixing caused by stringing due to a single mixing method.

[0016] 2. This automatic AB glue mixing and dispensing device uses a worm gear that rotates inside the extrusion cylinder to stir the glue while simultaneously pushing it downwards. A baffle plate inside the flipping assembly blocks and temporarily stores the first descending glue, allowing the glue from the front to mix with the glue from the rear. This achieves uniform initial mixing of the glue during dispensing, solving the problem of uneven initial mixing caused by the different dispensing times of the AB glues and limitations in the stirring method.

[0017] 3. This AB glue automatic mixing and dispensing device uses an active gear plate that meshes with the mating teeth to allow the glue to be directly grabbed and pushed downwards by the extrusion worm gear after the glue is stirred by the stirring shaft. This prevents the stirring shaft from blocking the glue from falling. By setting up an array of rollers, the stirring shaft can quickly grab and wrap the glue, and it can flow downwards through the gaps in the array when rotating, achieving the effect of smooth discharge of the glue after mixing. This solves the problem of the glue not being able to be discharged smoothly during mixing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the operating shell structure of the present invention; Figure 3 This is a schematic diagram of the glue-filling tube structure of the present invention; Figure 4 This is a schematic diagram of the mixing cylinder structure of the present invention; Figure 5 This is a schematic diagram of the mixing shaft structure of the present invention; Figure 6 This is a schematic diagram of the extrusion cylinder structure of the present invention; Figure 7This is a schematic diagram of the active gear disk structure of the present invention; Figure 8 This is a schematic diagram of the baffle plate structure of the present invention.

[0019] In the diagram: 1. Dispensing machine housing; 2. Conveying mechanism; 3. Moving component; 31. Transverse screw; 32. Adjusting platform; 33. Longitudinal screw; 4. Dispensing port; 5. Operating shell; 6. Dispensing pipe; 7. Mixing cylinder; 71. Inlet section; 72. Mixing section; 73. Conical trough; 8. Mixing shaft; 81. Spiral worm gear; 82. Paddle wheel; 9. Mixing mechanism; 91. Mixing chamber; 92. Mixing cylinder; 93. Mixing shaft; 931. Roller rod; 932. Roller column; 94. Sealing cover; 95. Drive gear plate; 10. Extrusion cylinder; 11. Extrusion assembly; 111. Linkage ring; 112. Connecting teeth; 113. Extrusion worm gear; 12. Tilting assembly; 121. Discharge pipe; 122. Baffle plate; 13. Replaceable dispensing head. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0024] like Figure 1-8 As shown, an automatic AB glue mixing and dispensing device includes a dispensing machine housing 1, a conveying mechanism 2 is provided at the lower inner end of the dispensing machine housing 1, a moving component 3 is provided at the inner upper end of the dispensing machine housing 1, a glue inlet 4 is fixedly connected to the upper end of the dispensing machine housing 1, an operating shell 5 is provided on the surface of the moving component 3, the moving component 3 includes a transverse screw 31, an adjusting table 32 is threadedly connected to the surface of the transverse screw 31, a longitudinal screw 33 is provided on the inner side of the adjusting table 32, and the longitudinal screw 33 is threadedly connected to the operating shell 5. The moving component 3 drives the operating shell 5 to make lateral and vertical adjustments through the transverse screw 31 and the longitudinal screw 33, so that the dispensing position can be controlled.

[0025] A dispensing tube 6 is provided through the upper end of the operating shell 5. The dispensing tube 6 is wrapped around the outer side of the lower end of the dispensing port 4. The dispensing tube 6 and the dispensing port 4 are slidably connected and are both made of flexible material to facilitate the adaptation to changes in the position of the operating shell 5. The dispensing tube 6 is connected to the dispensing port 4 to facilitate communication between the operating shell 5 and the dispensing port 4 when the operating shell 5 is raised or lowered. By making the dispensing tube 6 and the dispensing port 4 into flexible tubes, the dispensing port 4 and the dispensing tube 6 can bend with the movement when the operating shell 5 moves, so that the glue can be continuously dispensed.

[0026] A mixing cylinder 7 is fixedly connected to the lower end of the dispensing tube 6. A mixing shaft 8 is provided inside the mixing cylinder 7. The upper end of the mixing shaft 8 is a spiral worm gear 81. A paddle wheel 82 is fixedly connected to the lower end of the central shaft of the spiral worm gear 81. The center of the paddle wheel 82 is a round shaft. Two sets of paddles are fixedly provided on the surface of the round shaft for pushing the adhesive into the mixing cylinder 7. The mixing shaft 8 drives the adhesive inside the mixing cylinder 7 to rotate and mix through the spiral worm gear 81. By setting the paddle wheel 82 at the lower end of the spiral worm gear 81, the adhesive inside the mixing cylinder 7 can be stirred again in a circular motion, and the paddles can be used to remove the adhesive inside the mixing cylinder 7 and push it to the bottom.

[0027] The mixing cylinder 7 has a stirring mechanism 9 connected and connected to its lower end for stirring and mixing the descending adhesive liquid. The mixing cylinder 7 includes an inlet section 71, which is connected to the dispensing pipe 6. The inlet section 71 has an elliptical cross-section. The lower end of the inlet section 71 is connected to a mixing section 72, which is cylindrical and wraps around the outside of the worm gear 81. The lower end of the mixing section 72 is provided with a conical groove 73, and a paddle wheel 82 is located inside the conical groove 73. The conical groove 73 is connected to the stirring cylinder 92. By setting the cross-section of the inlet section 71 to be elliptical, the mixing cylinder 7 allows different adhesive liquids on both sides to enter quickly, preventing the worm gear 81 from blocking the inlet and causing uneven entry of adhesive liquids on both sides. By setting the mixing section 72 to have a circular cross-section, the two adhesive liquids can be fully stirred and mixed by the rotating worm gear 81. By setting the conical groove 73, the adhesive liquid has sufficient stirring cavity and can flow down quickly.

[0028] An extrusion cylinder 10 is fixedly connected to the outside of the mixing mechanism 9. The mixing mechanism 9 includes a mixing chamber 91. The mixing chamber 91 is fixedly connected to and passes through a mixing cylinder 92. The upper end of the mixing cylinder 92 is fixedly connected to and passes through a mixing cylinder 7. A mixing shaft 93 is rotatably connected to the inside of the mixing cylinder 92. Sealing covers 94 are provided on both sides of the mixing cylinder 92. The sealing covers 94 are sleeved on the outside of both ends of the mixing shaft 93 to seal and prevent glue leakage. An active gear disc 95 is fixedly connected to the outer surface of the mixing shaft 93. The mixing mechanism 9 sets the mixing shaft 93 to rotate inside the mixing cylinder 92, so that the falling glue can be turned over and stirred by the mixing shaft 93 inside the mixing cylinder 92. By setting the sealing covers 94, the glue is prevented from leaking from the gaps when the mixing shaft 93 rotates.

[0029] The stirring shaft 93 includes a roller rod 931, which is composed of three round shafts. Roller columns 932 are fixedly connected to both ends of the roller rod 931. The roller rod 931 is located inside the stirring cylinder 92. The roller columns 932 are rotatably connected to the sealing cover 94. The active gear disk 95 is fixedly connected to the surface of the roller columns 932. By setting the roller rod 931 composed of a round shaft array, the stirring shaft 93 increases the gripping force of the roller rod 931 on the adhesive, so that the adhesive can be fully stirred and mixed.

[0030] An extrusion assembly 11 is rotatably connected to the upper end face of the extrusion cylinder 10. The extrusion assembly 11 is connected to the stirring mechanism 9. The extrusion assembly 11 includes a linkage ring 111. The linkage ring 111 is rotatably connected to and passes through the lower end of the stirring cylinder 92. The outer surface of the linkage ring 111 is rotatably connected to the stirring chamber 91. A mating tooth 112 is fixedly connected to the outer surface of the linkage ring 111. The mating tooth 112 meshes with the active gear disc 95. The active gear disc 95 and the mating tooth 112 are both wrapped inside the stirring chamber 91. An extrusion worm gear 113 is fixedly connected to the inner side of the linkage ring 111. The extrusion assembly 11 drives the linkage ring 111 to rotate through the mating tooth 112, so that the linkage ring 111 drives the extrusion worm gear 113 to rotate. The extrusion worm gear 113 rotates inside the extrusion cylinder 10 to stir the glue and push the glue down.

[0031] A flipping assembly 12 is fixedly connected to the end face of the extrusion cylinder 10. The flipping assembly 12 includes a discharge pipe 121. Baffles 122 are arranged in an array on the inner side of the discharge pipe 121. Two adjacent sets of baffles 122 are staggered. The baffles 122 are tilted towards the replaceable dispensing head 13 to facilitate the flow of adhesive. By setting staggered baffles 122, the flipping assembly 12 allows the adhesive to be flipped and mixed in the gap of the discharge pipe 121. The adhesive that enters first is blocked by the baffles 122 and the subsequent adhesive moves forward. The adhesive that enters first is mixed with the adhesive that follows and discharged, preventing the problem of uneven mixing of the adhesive at the beginning. The lower end of the flipping assembly 12 is threadedly connected to the replaceable dispensing head 13.

[0032] In use, two different adhesives are first poured into different dispensing ports 4. The starting motor drives the mixing shaft 8 to rotate, allowing the two adhesives to enter the dispensing section 71. The rotation of the mixing shaft 8 causes the two adhesives to mix in the mixing section 72, and then, driven by the rotating paddle wheel 82, they enter the conical slot 73. The starting motor drives the transverse screw 31, which in turn moves the adjusting table 32 laterally. The starting motor also drives the longitudinal screw 33 to rotate, pushing the operating housing 5. The operating housing 5 then allows the replaceable dispensing head 13 to be moved to a different position for dispensing. The conveying mechanism 2 can move the workpiece placed on the surface, adjusting its position for convenient dispensing. The motor drives the stirring shaft 93 to rotate inside the stirring cylinder 92. The roller rod 931 rotates to agitate the glue falling from the conical trough 73, allowing the glue to be turned over and stirred again. The rotation of the stirring shaft 93 drives the active gear plate 95 to rotate, which in turn drives the mating teeth 112 to rotate. The mating teeth 112 drive the extrusion assembly 11 to rotate inside the extrusion cylinder 10. The extrusion worm gear 113 rotates to push the glue to mix and move downward. The glue enters the turning assembly 12 and is obstructed by the baffle plate 122, allowing the glue to be folded back and forth for mixing, making the glue more evenly mixed. Finally, the glue is discharged from the replaceable dispensing head 13 for dispensing.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0034] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic AB glue mixing and dispensing device, comprising a dispensing machine housing (1), characterized in that: The dispensing machine housing (1) is provided with a conveying mechanism (2) at the lower inner side, and a moving component (3) is provided at the upper inner side of the dispensing machine housing (1). A dispensing port (4) is fixedly connected to the upper end of the dispensing machine housing (1). An operating shell (5) is provided on the surface of the moving component (3). A dispensing tube (6) is provided through the upper end of the operating shell (5). A mixing cylinder (7) is fixedly connected to the lower end of the dispensing tube (6). A mixing shaft (8) is provided inside the mixing cylinder (7). A stirring mechanism (9) is connected and passes through the lower end of the mixing cylinder (7) for stirring and mixing the descending adhesive liquid. A glue extrusion cylinder (10) is fixedly connected to the outside of the stirring mechanism (9). A glue extrusion assembly (11) is rotatably connected to the upper end of the glue extrusion cylinder (10). The glue extrusion assembly (11) is connected to the stirring mechanism (9). A flipping assembly (12) is fixedly connected to the end of the glue extrusion cylinder (10). A replaceable dispensing head (13) is threadedly connected to the lower end of the flipping assembly (12).

2. The automatic AB glue mixing and dispensing device according to claim 1, characterized in that: The upper end of the mixing shaft (8) is a spiral worm gear (81), and the lower end of the central shaft of the spiral worm gear (81) is fixedly connected to a paddle wheel (82). The center of the paddle wheel (82) is a round shaft, and two sets of paddles are fixedly arranged on the surface of the round shaft to push the adhesive liquid into the mixing cylinder (7).

3. The automatic AB glue mixing and dispensing device according to claim 1, characterized in that: The stirring mechanism (9) includes a stirring chamber (91), a stirring cylinder (92) is fixedly connected to and passes through the inner side of the stirring chamber (91), the upper end of the stirring cylinder (92) is fixedly connected to and passes through the mixing cylinder (7), a stirring shaft (93) is rotatably connected to the inner side of the stirring cylinder (92), a sealing cover (94) is provided on both sides of the stirring cylinder (92), the sealing cover (94) is sleeved on the outer side of both ends of the stirring shaft (93) to seal and prevent glue leakage, and an active gear disc (95) is fixedly connected to the outer surface of the stirring shaft (93).

4. The automatic AB glue mixing and dispensing device according to claim 3, characterized in that: The extrusion assembly (11) includes a linkage ring (111), which is rotatably connected to and passes through the lower end of the mixing cylinder (92). The outer surface of the linkage ring (111) is rotatably connected to the mixing chamber (91). A mating tooth (112) is fixedly connected to the outer surface of the linkage ring (111). The mating tooth (112) meshes with the active gear disc (95). The active gear disc (95) and the mating tooth (112) are both wrapped inside the mixing chamber (91). An extrusion worm gear (113) is fixedly connected to the inner side of the linkage ring (111).

5. The automatic AB glue mixing and dispensing device according to claim 3, characterized in that: The stirring shaft (93) includes a roller rod (931), which is composed of three round shafts. Roller columns (932) are fixedly connected to both ends of the roller rod (931). The roller rod (931) is located inside the stirring cylinder (92). The roller columns (932) are rotatably connected to the sealing cover (94). The active gear disc (95) is fixedly connected to the surface of the roller columns (932).

6. The automatic AB glue mixing and dispensing device according to claim 1, characterized in that: The flipping component (12) includes a discharge pipe (121), and baffles (122) are arranged in an array on the inner side of the discharge pipe (121). Two adjacent sets of baffles (122) are staggered and the baffles (122) are tilted toward the replaceable dispensing head (13) to facilitate the flow of adhesive.

7. The automatic AB glue mixing and dispensing device according to claim 1, characterized in that: The moving component (3) includes a transverse screw (31), an adjustment table (32) is threadedly connected to the surface of the transverse screw (31), a longitudinal screw (33) is provided inside the adjustment table (32), and the longitudinal screw (33) is threadedly connected to the operating housing (5).

8. The automatic AB glue mixing and dispensing device according to claim 1, characterized in that: The glue-filling tube (6) is wrapped around the outside of the lower end of the glue-filling port (4). The glue-filling tube (6) and the glue-filling port (4) are slidably connected and are both made of bendable material, which is convenient to adapt to changes in the position of the operating shell (5).

9. The automatic AB glue mixing and dispensing device according to claim 3, characterized in that: The mixing cylinder (7) includes a glue inlet section (71), which is connected to the glue dispensing pipe (6). The cross-section of the glue inlet section (71) is elliptical. The lower end of the glue inlet section (71) is connected to a mixing section (72). The mixing section (72) is cylindrical and wrapped around the outside of the spiral worm gear (81). The lower end of the mixing section (72) is provided with a conical groove (73). The paddle wheel (82) is located inside the conical groove (73). The conical groove (73) is connected to the mixing cylinder (92).

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