A stirring device for chemical raw material production

Abstract

The present application provides a stirring device for chemical raw material production, which belongs to the technical field of chemical raw material production, and comprises a stirring barrel and a stirring shaft arranged inside the stirring barrel, and a discharge pipe is connected to the bottom of the stirring barrel; the stirring shaft is hollow and rotatably connected to the middle of the stirring barrel, a plurality of stirring blades are arranged on the stirring shaft, a plurality of material guide ports connected to the inner cavity of the stirring shaft are provided at the bottom of the stirring shaft, a plurality of filter holes are provided in an array on the top of the stirring shaft, an auger is rotatably connected to the inside of the stirring shaft, and an auxiliary stirring blade that can rotate with the auger is provided between the upper surface of the auger and the top wall of the inner cavity of the stirring shaft; a driving unit is provided at the bottom of the stirring barrel, which is used to drive the stirring shaft and the auger to rotate in opposite directions; the present application can reduce the influence of solid impurities on stirring and defoaming work.

Description

Technical Field

[0001] The present application relates to the technical field of chemical raw material production, and in particular to a stirring device for chemical raw material production. Background Art

[0002] Fixatives play a crucial role in the printing and writing industries. Their quality directly impacts key properties of inks, such as their drying speed and adhesion to substrates. Fixative production requires the mixing of multiple raw materials, such as organic solvents, resins, desiccants, and surfactants, according to specific formulas and processes.

[0003] Surfactants are used to improve the wettability and dispersibility of the ink fixer on the printed material, ensuring uniform dispersion of components such as resins and pigments. However, because surfactants reduce the surface tension of liquids, air can more easily enter the liquid during the mixing process. This reduced surface tension makes it difficult for air to escape, forming bubbles within the liquid. These bubbles can cause incomplete printed patterns during subsequent printing.

[0004] Referring to the Chinese patent document with the announcement number CN117983097B and the announcement date of June 14, 2024, the name is a raw material stirring device for paint and coating production. While stirring and mixing the materials, it can form a negative pressure environment inside the stirring device and eliminate bubbles, which is conducive to improving the defoaming efficiency.

[0005] Referring to the above technical solution, in the ink fixer production process, since the resin, rosin and other substances in the ink fixer raw materials may not be completely dissolved and form solid impurities, in the actual stirring and mixing process of the ink fixer, the solid impurities will not only interfere with the uniformity of the stirring work, resulting in the final quality of the ink fixer being affected, but these solid impurities may also act as nucleation points for bubbles and participate in the stirring work, causing bubbles to be more easily formed and tend to stabilize, thereby bringing greater difficulty to the defoaming work. Summary of the Invention

[0006] In view of this, the present application provides a stirring device for chemical raw material production, which is mainly used to reduce the problem that solid impurities easily interfere with the stirring and defoaming work and affect the final quality of the ink fixative.

[0007] In order to solve the above technical problems, the present application provides a stirring device for the production of chemical raw materials, including a stirring barrel and a stirring shaft arranged inside the stirring barrel, and a discharge pipe is connected to the bottom of the stirring barrel; the stirring shaft is hollow and rotatably connected to the middle of the stirring barrel, a plurality of stirring blades are arranged on the stirring shaft, a plurality of material guide ports connected to its own inner cavity are opened at the bottom of the stirring shaft, a plurality of filter holes are opened in an array on the top of the stirring shaft, an auger is rotatably connected inside the stirring shaft, and an auxiliary stirring blade that can rotate with the auger is arranged between the upper surface of the auger and the top wall of the inner cavity of the stirring shaft; a driving unit is provided at the bottom of the stirring barrel, for driving the stirring shaft and the auger to rotate in opposite directions.

[0008] By adopting the above technical solution, the filter holes can block the solid impurities in the ink fixer inside the stirring shaft to prevent the solid impurities from participating in the stirring work of the ink fixer and interfering with the stirring effect. At the same time, the auxiliary stirring blades can break up the bubbles inside the stirring shaft with solid impurities acting as nucleation points.

[0009] Optionally, the auxiliary stirring blade consists of an upper transition plate, a lower transition plate and a spoiler impeller, the upper transition plate is rotatably connected to the top wall of the inner cavity of the stirring shaft, the lower transition plate is fixedly connected to the upper surface of the auger, and the spoiler impeller is radially slidably connected between the upper transition plate and the lower transition plate through an elastic member.

[0010] By adopting the above technical solution, under the coordinated action of centrifugal force and elastic parts, the turbulent impeller can also move radially at the top of the inner cavity of the stirring shaft, thereby improving the effect of breaking up and defoaming.

[0011] Optionally, a plurality of scrapers capable of abutting against the inner wall of the stirring shaft are provided in a circumferential array on the outer surface of the lower transition plate.

[0012] By adopting the above technical solution, the scraper can scrape off the ink fixative that may be attached to the inner wall of the stirring shaft to prevent the filter holes from being blocked and affecting the normal filtration work.

[0013] Optionally, the blades of the turbulent impeller are flexible rubber blades, and the top wall of the inner cavity of the stirring shaft is provided with a protruding pin that can collide with the turbulent impeller.

[0014] By adopting the above technical solution, when the flexible rubber blades of the spoiler impeller collide with the convex pin and are deformed, the spoiler impeller can generate a greater impact force on the bubbles during the rebound process, thereby destroying the surface tension of the bubbles.

[0015] Optionally, the stirring blade is detachably connected to the stirring shaft.

[0016] By adopting the above technical solution, personnel can replace the mixing blades with suitable sizes or shapes according to the needs of the mixing work.

[0017] Optionally, the drive unit includes a servo motor arranged at the bottom of the mixing barrel, a driving bevel gear is provided on the output shaft of the servo motor, and the mixing shaft and the bottom of the auger are both provided with driven bevel gears that can engage with the driving bevel gear, and the two driven bevel gears are oriented in opposite directions.

[0018] By adopting the above technical solution, when the servo motor drives the driving bevel gear to rotate, the two driven bevel gears will rotate synchronously, thereby driving the stirring shaft and the auger to rotate in opposite directions.

[0019] Optionally, a plurality of barrier nets corresponding to the material guide ports and capable of blocking the material guide ports are circumferentially slidably connected to the bottom of the stirring shaft, and a driving member for driving the barrier nets to slide circumferentially is provided at the bottom of the stirring barrel.

[0020] By adopting the above technical solution, the barrier net can block the material guide port in cooperation with the driving member to prevent solid impurities from escaping from the inside of the stirring shaft.

[0021] Optionally, the driving member includes a hydraulic cylinder arranged at the bottom of the mixing barrel, and a hydraulic pipeline is connected between the hydraulic cylinder and the sliding cavity of the barrier net.

[0022] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0023] 1. The solid impurities are separated from the ink fixer by circulating filtration, which improves the uniformity of the stirring work and reduces the possibility of interference of the solid impurities on the stirring work. In addition, for bubbles with solid impurities as nucleation points, stirring can be used to break up the bubbles, thereby improving the final effect of the defoaming work.

[0024] 2. After the stirring work is completed, the solid impurities can provide auxiliary effects for the subsequent cleaning work, so that the solid impurities are continuously displaced inside the stirring shaft, so as to scrape off the residual ink fixative that may exist on the inner wall of the stirring shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a stirring device for producing chemical raw materials in this application;

[0026] Figure 2 A cross-sectional view of the mixing barrel of this application;

[0027] Figure 3 A cross-sectional view of the stirring shaft of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the transition plate under this application;

[0029] Figure 5 This is a structural diagram of the transition plate in this application.

[0030] Explanation of the accompanying reference numerals: 1. Mixing barrel; 11. Discharge pipe; 2. Mixing shaft; 21. Mixing blade; 22. Material guide port; 23. Filter hole; 3. Auger; 4. Auxiliary mixing blade; 41. Upper transition plate; 42. Lower transition plate; 421. Scraper; 43. Turbine impeller; 5. Drive unit; 51. Servo motor; 52. Driving bevel gear; 53. Driven bevel gear; 6. Pin; 7. Barrier net; 8. Drive component; 81. Hydraulic cylinder; 82. Hydraulic pipeline. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application Figure 1-Figure 5 , clearly and completely describes the technical solutions of the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the described embodiments of this application, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of this application.

[0032] Reference Figure 1 and Figure 2 This embodiment provides a stirring device for chemical raw material production, comprising a stirring barrel 1, a stirring shaft 2, a filter assembly, and an auxiliary defoaming assembly. A discharge pipe 11 is connected to the bottom of the stirring barrel 1. The stirring shaft 2 is hollow and rotatably connected to the middle of the stirring barrel 1. A plurality of stirring blades 21 are detachably connected to the stirring shaft 2.

[0033] Among them, reference Figure 2 and Figure 3 The filter assembly includes a material guide port 22, filter holes 23, an auger 3, and a drive unit 5. The material guide port 22 is provided with a plurality of filter holes 23 arranged in a circumferential array at the bottom of the stirring shaft 2. A plurality of filter holes 23 are arranged in an array on the top of the stirring shaft 2. The auger 3 is rotatably connected to the inside of the stirring shaft 2. The drive unit 5 includes a servo motor 51, a driving bevel gear 52, and two driven bevel gears 53. The servo motor 51 is provided at the bottom of the mixing barrel 1. The driving bevel gear 52 is provided on the output shaft of the servo motor 51. The two driven bevel gears 53 are provided at the bottom of the stirring shaft 2 and the auger 3, respectively. The two driven bevel gears 53 face in opposite directions and can mesh with the driving bevel gear 52 to drive the stirring shaft 2 and the auger 3 to rotate in opposite directions.

[0034] When the ink fixative is being stirred, the driving unit 5 cooperates to make the stirring shaft 2 and the auger 3 rotate in opposite directions. At this time, the stirring blades 21 on the stirring shaft 2 can stir and mix the ink fixative, and the auger 3 can introduce the ink fixative inside the stirring barrel 1 from the material guide port 22 into the stirring shaft 2 and lift it upward when rotating. Then, with the cooperation of the filter hole 23, solid impurities will be restricted to the top of the inner cavity of the stirring shaft 2, reducing the possibility of solid impurities interfering with the stirring work, and the ink fixative will re-enter the stirring barrel 1 through the filter hole 23, and while filtering the solid impurities, the ink fixative is in a circulating flow state, further improving the uniformity of the stirring work.

[0035] Among them, reference Figure 3 、 Figure 4 and Figure 5 The auxiliary defoaming assembly includes an auxiliary stirring blade 4 disposed between the upper surface of the auger 3 and the top wall of the inner cavity of the stirring shaft 2. The auxiliary stirring blade 4 consists of an upper transition plate 41, a lower transition plate 42, and a disruptive impeller 43. The upper transition plate 41 is rotatably connected to the top wall of the inner cavity of the stirring shaft 2, the lower transition plate 42 is fixedly connected to the upper surface of the auger 3, and the disruptive impeller 43 is radially slidably connected between the upper transition plate 41 and the lower transition plate 42 via an elastic member.

[0036] During the stirring process, as the external defoaming agent is added, the bubbles on the surface of the mixing barrel 1 will be gradually eliminated. In this process, the auxiliary stirring blade 4 composed of the upper transition plate 41, the lower transition plate 42 and the spoiler impeller 43 will rotate together with the auger 3 to break up the bubbles with solid impurities acting as nucleation points at the top of the inner cavity of the stirring shaft 2. Under the coordinated action of centrifugal force and elastic parts, the spoiler impeller 43 can also move radially at the top of the inner cavity of the stirring shaft 2, thereby improving the effect of breaking up the defoaming work.

[0037] Reference Figure 4 and Figure 5 The outer surface of the lower transition plate 42 is provided with a plurality of scrapers 421 arranged in a circumferential array and capable of abutting against the inner wall of the stirring shaft 2 .

[0038] During the rotation of the lower transition plate 42 , the scraper 421 rotates along with the lower transition plate 42 to scrape off the ink fixative that may be attached to the inner wall of the stirring shaft 2 , so as to prevent the filter holes 23 from being blocked and affecting the normal filtration work.

[0039] Reference Figure 5 The blades of the turbulent impeller 43 are flexible rubber blades, and the top wall of the inner cavity of the stirring shaft 2 is provided with a protruding pin 6 that can collide with the turbulent impeller 43.

[0040] When the flexible rubber blades of the spoiler impeller 43 collide with the protruding pin 6, the flexible rubber blades of the spoiler impeller 43 will be deformed to a certain extent. During its rebound process, the spoiler impeller 43 can generate a greater impact force on the bubbles at the top of the inner cavity of the stirring shaft 2 with solid impurities acting as nucleation points, thereby destroying the surface tension of the bubbles and further improving the quality of the defoaming work.

[0041] Reference Figure 2 and Figure 3 The bottom of the stirring shaft 2 is circumferentially slidably connected with multiple barrier nets 7 that correspond one-to-one to the material guide port 22 and can block the material guide port 22. A driving member 8 is provided at the bottom of the mixing barrel 1. The driving member 8 includes a hydraulic cylinder 81 and a hydraulic pipeline 82. The hydraulic cylinder 81 is provided at the bottom of the mixing barrel 1, and the hydraulic pipeline 82 is connected between the hydraulic cylinder 81 and the sliding cavity of the barrier net 7, which is used to drive the barrier net 7 to slide circumferentially.

[0042] After the stirring work is completed, the barrier net 7 is circumferentially slid and the material guide port 22 is blocked through the cooperation of the driving member 8. After the fixing ink is discharged from the discharge pipe 11, with the cooperation of the barrier net 7, the solid impurities will still be located inside the stirring shaft 2. At this time, external clean water is sent into the stirring barrel 1 for cleaning. During this process, the driving unit 5 periodically drives the auger 3 to rotate forward and reverse, which can enable the solid impurities to continuously shift inside the stirring shaft 2 so as to scrape off the residual fixing ink that may exist on the inner wall of the stirring shaft 2.

[0043] The implementation principle of a stirring device for chemical raw material production in the embodiment of the present application is as follows:

[0044] When the ink fixative is being stirred, the driving unit 5 cooperates to make the stirring shaft 2 and the auger 3 rotate in opposite directions. At this time, the stirring blades 21 on the stirring shaft 2 can stir and mix the ink fixative, and the auger 3 can introduce the ink fixative inside the stirring barrel 1 from the material guide port 22 into the stirring shaft 2 and lift it upward when rotating. Then, with the cooperation of the filter hole 23, solid impurities will be restricted to the top of the inner cavity of the stirring shaft 2, reducing the possibility of solid impurities interfering with the stirring work, and the ink fixative will re-enter the stirring barrel 1 through the filter hole 23, and while filtering the solid impurities, the ink fixative is in a circulating flow state, further improving the uniformity of the stirring work.

[0045] During the stirring process, as the external defoaming agent is added, the bubbles on the surface of the mixing barrel 1 will be gradually eliminated. In this process, the auxiliary stirring blade 4 composed of the upper transition plate 41, the lower transition plate 42 and the spoiler impeller 43 will rotate together with the auger 3 to break up the bubbles with solid impurities acting as nucleation points at the top of the inner cavity of the stirring shaft 2. Under the coordinated action of centrifugal force and elastic parts, the spoiler impeller 43 can also move radially at the top of the inner cavity of the stirring shaft 2, thereby improving the effect of breaking up the defoaming work.

[0046] After the stirring work is completed, the barrier net 7 is circumferentially slid and the material guide port 22 is blocked through the cooperation of the driving member 8. After the fixing ink is discharged from the discharge pipe 11, with the cooperation of the barrier net 7, the solid impurities will still be located inside the stirring shaft 2. At this time, external clean water is sent into the stirring barrel 1 for cleaning. During this process, the driving unit 5 periodically drives the auger 3 to rotate forward and reverse, which can enable the solid impurities to continuously shift inside the stirring shaft 2 so as to scrape off the residual fixing ink that may exist on the inner wall of the stirring shaft 2.

[0047] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0048] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A stirring device for producing chemical raw materials, comprising a stirring barrel (1) and a stirring shaft (2) arranged therein, wherein the bottom of the stirring barrel (1) is connected to a discharge pipe (11), characterized in that: The stirring shaft (2) is hollow and rotatably connected to the middle of the stirring barrel (1); a plurality of stirring blades (21) are provided on the stirring shaft (2); a plurality of material guide ports (22) communicating with the inner cavity of the stirring shaft (2) are provided at the bottom; a plurality of filter holes (23) are provided in an array on the top of the stirring shaft (2); an auger (3) is rotatably connected to the inside of the stirring shaft (2); and an auxiliary stirring blade (4) capable of rotating along with the auger (3) is provided between the upper surface of the auger (3) and the top wall of the inner cavity of the stirring shaft (2); A driving unit (5) is provided at the bottom of the mixing barrel (1) for driving the mixing shaft (2) and the auger (3) to rotate in opposite directions; After the stirring work is completed, the driving unit (5) periodically drives the auger (3) to rotate forward and reverse, so that the solid impurities are continuously displaced inside the stirring shaft (2), so as to scrape off the residual ink fixative that may exist on the inner wall of the stirring shaft (2); The auxiliary stirring blade (4) is composed of an upper transition plate (41), a lower transition plate (42) and a spoiler impeller (43), wherein the upper transition plate (41) is rotatably connected to the top wall of the inner cavity of the stirring shaft (2), the lower transition plate (42) is fixedly connected to the upper surface of the auger (3), and the spoiler impeller (43) is radially slidably connected between the upper transition plate (41) and the lower transition plate (42) through an elastic member; The outer surface of the lower transition plate (42) is provided with a plurality of scrapers (421) arranged in a circumferential array and capable of abutting against the inner wall of the stirring shaft (2); The blades of the turbulent impeller (43) are flexible rubber blades, and the top wall of the inner cavity of the stirring shaft (2) is provided with a convex pin (6) capable of colliding with the turbulent impeller (43).

2. A stirring device for chemical raw material production according to claim 1, characterized in that: The stirring blade (21) is detachably connected to the stirring shaft (2).

3. The stirring device for chemical raw material production according to claim 1, characterized in that: The driving unit (5) comprises a servo motor (51) arranged at the bottom of the mixing barrel (1); a driving bevel gear (52) is arranged on the output shaft of the servo motor (51); and driven bevel gears (53) capable of meshing with the driving bevel gear (52) are arranged at the bottom of the mixing shaft (2) and the auger (3), and the two driven bevel gears (53) are oriented in opposite directions.

4. A stirring device for chemical raw material production according to claim 1, characterized in that: The bottom of the stirring shaft (2) is circumferentially slidably connected to a plurality of barrier nets (7) that correspond one-to-one to the material guide openings (22) and can block the material guide openings (22). The bottom of the stirring barrel (1) is provided with a driving member (8) for driving the barrier nets (7) to slide circumferentially.

5. A stirring device for chemical raw material production according to claim 4, characterized in that: The driving member (8) comprises a hydraulic cylinder (81) arranged at the bottom of the mixing barrel (1), and a hydraulic pipeline (82) is connected between the hydraulic cylinder (81) and the sliding cavity of the barrier net (7).

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