Stirring device for chemical raw material production

Abstract

The invention provides a stirring device for chemical raw material production, and belongs to the technical field of chemical raw material production, the stirring device comprises a stirring barrel and a stirring shaft arranged in the stirring barrel, and the bottom of the stirring barrel communicates with a discharge pipe; the stirring shaft is hollow and rotationally connected to the middle of the stirring barrel, a plurality of stirring blades are arranged on the stirring shaft, a plurality of material guiding openings communicated with an inner cavity of the stirring shaft are formed in the bottom of the stirring shaft, a plurality of filtering holes are formed in the top of the stirring shaft in an array mode, and an auger is rotationally connected to the interior of the stirring shaft; an auxiliary stirring blade capable of rotating along 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 arranged at the bottom of the stirring barrel and is used for driving the stirring shaft and the auger to rotate in opposite directions; according to the invention, the influence of solid impurities on stirring work and defoaming work can be reduced.

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] Ink fixers play a vital role in the field of printing and writing. Their quality directly affects the key properties of ink or ink on the substrate, such as drying speed and adhesion. In the production of ink fixers, multiple raw materials such as organic solvents, resins, desiccants, surfactants, etc. need to be mixed according to specific formulas and processes.

[0003] Surfactants are used to improve the wettability and dispersibility of the ink fixer on the printing material, so that the resin, pigment and other components can be evenly dispersed. However, since surfactants have the characteristic of reducing the surface tension of the liquid, air will more easily enter the liquid during the mixing process of the ink fixer. At this time, due to the reduced surface tension of the liquid, it is difficult for air to escape from the liquid, thus forming bubbles in the liquid. In the subsequent printing process, these bubbles may cause incomplete printed patterns.

[0004] Referring to the Chinese patent document with announcement number CN117983097B and announcement date June 14, 2024, entitled A raw material stirring device for paint and coating production, while stirring and mixing the materials, a negative pressure environment can be formed inside the stirring device and bubbles can be eliminated, which is conducive to improving the defoaming efficiency.

[0005] Referring to the above technical solution, in the production process of the ink fixer, since the resin, rosin and other substances in the raw materials of the ink fixer 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 of bubbles and participate in the stirring work, causing bubbles to be easier to form and tend to stabilize, thereby making the defoaming work more difficult. 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 stirring and defoaming work and affect the final quality of the ink fixer.

[0007] In order to solve the above-mentioned 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 the inner cavity of the stirring shaft 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 arranged at the bottom of the stirring barrel, which is used to drive 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 bubbles inside the stirring shaft with solid impurities acting as nucleation points can be dispersed through the auxiliary stirring blades.

[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 arranged 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 fixer that may be attached to the inner wall of the stirring shaft to prevent the filter holes from being blocked and affecting the normal filtering 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 convex 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 deform, during the rebound process, the spoiler impeller can generate a greater impact force on the bubbles, 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 driving unit includes a servo motor arranged at the bottom of the mixing barrel, a driving bevel gear is arranged on the output shaft of the servo motor, and a driven bevel gear that can mesh with the driving bevel gear is arranged on the mixing shaft and the bottom of the auger, and the two driven bevel gears are oriented in opposite directions.

[0018] By adopting the above technical solution, when the servo motor drives the active 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 one by one 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 with the cooperation of 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, the present application includes at least one of the following beneficial technical effects: 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. For the bubbles with solid impurities as nucleation points, stirring and breaking can be used to break the bubbles, thereby improving the final effect of the defoaming work.

[0023] 2. After the stirring work is completed, the solid impurities can provide auxiliary effect 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

[0024] Figure 1 This is a schematic diagram of the structure of a stirring device for producing chemical raw materials in this application; Figure 2 A cross-sectional view of the mixing barrel of this application; Figure 3 This is a cross-sectional view of the stirring shaft of this application; Figure 4 This is a schematic diagram of the structure of the transition plate under this application; Figure 5 This is a schematic diagram of the structure of the transition plate in this application.

[0025] Explanation of the reference numerals in the accompanying drawings: 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. spoiler impeller; 5. drive unit; 51. servo motor; 52. driving bevel gear; 53. driven bevel gear; 6. convex pin; 7. barrier net; 8. drive member; 81. hydraulic cylinder; 82. hydraulic pipeline. DETAILED DESCRIPTION

[0026] 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 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0027] Reference Figure 1 and Figure 2 The present embodiment provides a stirring device for chemical raw material production, comprising a stirring barrel 1, a stirring shaft 2, a filtering component and an auxiliary defoaming component. 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, and a plurality of stirring blades 21 are detachably connected to the stirring shaft 2.

[0028] Among them, refer to 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 at the top of the stirring shaft 2, and the auger 3 is rotatably connected inside 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 arranged at the bottom of the stirring barrel 1, the driving bevel gear 52 is arranged on the output shaft of the servo motor 51, and the two driven bevel gears 53 are arranged at the bottom of the stirring shaft 2 and the auger 3 respectively, the two driven bevel gears 53 are in opposite directions and can mesh with the driving bevel gear 52, and are used to drive the stirring shaft 2 and the auger 3 to rotate in opposite directions.

[0029] When the ink fixer is 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 fixer, and the auger 3 can introduce the ink fixer 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, the 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 fixer will re-enter the stirring barrel 1 through the filter hole 23, and while filtering the solid impurities, the ink fixer is in a circulating flow state, further improving the uniformity of the stirring work.

[0030] Among them, refer to 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 is composed of an upper transition plate 41, a lower transition plate 42 and a spoiler 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 spoiler 43 is radially slidably connected between the upper transition plate 41 and the lower transition plate 42 through an elastic member.

[0031] During the stirring process, with the addition of external defoaming agent, the bubbles on the surface of the stirring barrel 1 will be gradually eliminated, and in this process, the auxiliary stirring blades 4 composed of the upper transition plate 41, the lower transition plate 42 and the spoiler impeller 43 will rotate along with the auger 3, so as to break up the bubbles with solid impurities acting as nucleation points at the top of the inner cavity of the stirring shaft 2, and 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.

[0032] 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 .

[0033] During the rotation of the lower transition plate 42 , the scraper 421 will rotate along with the lower transition plate 42 to scrape off the ink fixer 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 filtering work.

[0034] 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 convex pin 6 that can collide with the turbulent impeller 43.

[0035] When the flexible rubber blades of the spoiler impeller 43 collide with the convex 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 produce a greater impact force on the bubbles with solid impurities acting as nucleation points at the top of the inner cavity of the stirring shaft 2, thereby destroying the surface tension of the bubbles and further improving the quality of the breaking and defoaming work.

[0036] Reference Figure 2 and Figure 3 A plurality of barrier nets 7 corresponding to the material guide port 22 and capable of blocking the material guide port 22 are circumferentially slidably connected to the bottom of the stirring shaft 2. A driving member 8 is provided at the bottom of the stirring 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 stirring barrel 1. The hydraulic pipeline 82 is connected between the sliding cavity of the hydraulic cylinder 81 and the barrier net 7, and is used to drive the barrier net 7 to slide circumferentially.

[0037] After the stirring work is completed, the barrier net 7 is made to slide circumferentially 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.

[0038] The implementation principle of a stirring device for chemical raw material production in the embodiment of the present application is: When the ink fixer is 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 fixer, and the auger 3 can introduce the ink fixer 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, the 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 fixer will re-enter the stirring barrel 1 through the filter hole 23, and while filtering the solid impurities, the ink fixer is in a circulating flow state, further improving the uniformity of the stirring work.

[0039] During the stirring process, with the addition of external defoaming agent, the bubbles on the surface of the stirring barrel 1 will be gradually eliminated, and in this process, the auxiliary stirring blades 4 composed of the upper transition plate 41, the lower transition plate 42 and the spoiler impeller 43 will rotate along with the auger 3, so as to break up the bubbles with solid impurities acting as nucleation points at the top of the inner cavity of the stirring shaft 2, and 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.

[0040] After the stirring work is completed, the barrier net 7 is made to slide circumferentially 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.

[0041] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] 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 chemical raw material production, comprising a stirring barrel (1) and a stirring shaft (2) arranged inside the stirring barrel, and a discharge pipe (11) is connected to the bottom of the stirring barrel (1), 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 arranged on the stirring shaft (2); a plurality of material guide ports (22) communicating with the inner cavity of the stirring shaft (2) are arranged at the bottom; a plurality of filter holes (23) are arranged in an array at the top of the stirring shaft (2); an auger (3) is rotatably connected inside the stirring shaft (2); and an auxiliary stirring blade (4) capable of rotating together with the auger (3) is arranged 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 stirring barrel (1) for driving the stirring shaft (2) and the auger (3) to rotate in opposite directions.

2. A stirring device for chemical raw material production according to claim 1, characterized in that: The auxiliary stirring blade (4) is composed of an upper transition plate (41), a lower transition plate (42) and a spoiler 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 spoiler impeller (43) is radially slidably connected between the upper transition plate (41) and the lower transition plate (42) via an elastic member.

3. A stirring device for chemical raw material production according to claim 2, characterized in that: The outer surface of the lower transition plate (42) is provided with a plurality of scrapers (421) in a circumferential array and capable of abutting against the inner wall of the stirring shaft (2).

4. A stirring device for chemical raw material production according to claim 3, characterized in that: 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).

5. The 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).

6. A 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.

7. 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) corresponding one-to-one to the material guide openings (22) and capable of blocking the material guide openings (22), and the bottom of the stirring barrel (1) is provided with a driving member (8) for driving the barrier nets (7) to slide circumferentially.

8. A stirring device for chemical raw material production according to claim 7, 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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