A mixing device for papermaking

Abstract

The present invention relates to the field of mixing equipment, and in particular to a mixing device for papermaking, comprising a stirring kettle for storing raw materials and a power assembly for providing power, wherein the power assembly is installed at the upper end of the stirring kettle, and further comprises a stirring mechanism for stirring and mixing the raw materials and an adjusting mechanism for adjusting the stirring state of the stirring mechanism, wherein a power output end of the power assembly is provided with a power shaft, wherein the power shaft extends into the stirring kettle, the stirring mechanism is provided at the outer side of the bottom of the power shaft, the inner side of the stirring mechanism is connected to the power shaft via the adjusting mechanism, and a guiding mechanism for processing the agglomeration of raw materials is provided at the upper side of the stirring mechanism, so as to solve the technical problem that agglomeration may occur during the stirring process or a vortex may be formed in the stirring environment, thereby causing high-density materials to be thrown to the outside and forming a stratification phenomenon.

Description

Technical Field

[0001] The invention relates to the field of mixing equipment, in particular to a mixing device for papermaking. Background Art

[0002] Polylactic acid (PLA) ultra-thin precision film is the main raw material for producing environmentally friendly paper cups and other degradable disposable products. Its structure is a paper-like film, so the production of polylactic acid ultra-thin precision coating is also called environmentally friendly paper production in the industry. In the process of producing polylactic acid (PLA) ultra-thin precision film, the mixing of raw materials is a key step, which involves the uniform mixing of PLA resin and possible additives. When using a high shear mixer to process the raw materials of polylactic acid (PLA) ultra-thin precision film, you may encounter problems such as material overheating, uneven mixing, dispersion of additives, excessive viscosity, mechanical wear and equipment failure, and bubble generation.

[0003] In the prior art, a Chinese invention patent with a comparative publication number of CN114307924B discloses a horizontal depolymerization reactor for the production of polylactic acid, which stirs and mixes the polylactic acid material by means of a horizontal structure in combination with anisotropic rods. However, in such equipment, although the use of anisotropic rods can improve the stirring efficiency to a certain extent, because polylactic acid is in powder form and the additive cost is relatively high, it is very easy to form agglomerates and stratification when the powder and the additive are mixed. Although long-term stirring can also destroy the agglomerations and stratification, it will cause the internal temperature to overheat and cause the material to deteriorate. Summary of the invention

[0004] The invention provides a mixing device for papermaking to solve the technical problem that agglomeration may occur during the stirring process or a vortex is formed in the stirring environment, thereby causing high-density materials to be thrown to the outside and forming a stratification phenomenon.

[0005] A papermaking mixing device of the present invention adopts the following technical scheme: it comprises a stirring kettle for storing raw materials and a power assembly for providing power, the power assembly is installed at the upper end of the stirring kettle, and also comprises a stirring mechanism for stirring and mixing the raw materials and an adjusting mechanism for adjusting the stirring state of the stirring mechanism, a power shaft is installed at the power output end of the power assembly, the power shaft extends into the stirring kettle, the stirring mechanism is installed at the outer side of the bottom of the power shaft, the inner side of the stirring mechanism is connected to the power shaft through the adjusting mechanism, and a guiding mechanism for processing the agglomeration of raw materials is installed on the upper side of the stirring mechanism;

[0006] The stirring mechanism comprises an upper power frame and a bottom matching frame, wherein the upper power frame and the bottom matching frame are movably connected to the outside of the power shaft, the upper power frame is located on the upper side of the bottom matching frame, and a plurality of adjusting blades are installed in a circumferential array on the outer sides of the upper power frame and the bottom matching frame, and the two upper and lower corresponding adjusting blades are connected to the same central blade through a pin shaft, and the adjusting blades and the central blade are both formed with guide grooves;

[0007] The adjusting blade at the upper end is connected to the upper power frame through the adjusting mechanism, and the adjusting mechanism includes a connecting rod, one end of the connecting rod is fixedly connected to the adjusting blade, and the other end of the connecting rod is provided with a rotating shaft, the rotating shaft is rotatably connected to the upper power frame, and a torsion component for adjusting the torsion angle of the adjusting blade is provided on the rotating shaft.

[0008] Furthermore, a first extrusion block is provided on the inner side of the upper power frame, and a first extrusion groove matching the first extrusion block is formed on the power shaft. The first extrusion groove is a spiral groove, and the spiral direction is the rotation direction of the upper power frame. A return spring is provided between the upper power frame and the bottom matching frame.

[0009] Furthermore, the torsion assembly of the rotating shaft includes a universal ball joint and a swing shaft, the universal ball joint and the swing shaft are arranged on two bottom surfaces of the rotating shaft, the universal ball joint is movably connected to the upper power frame, the swing shaft is close to the axial direction of the upper power frame and cooperates with the locking assembly of the guide mechanism, and the locking assembly is used to adjust the locking state of the rotating shaft.

[0010] Furthermore, the locking assembly includes a pressure rod, a push rod is provided on one side of the pressure rod close to the swing shaft, and the push rod is connected to a limiting block at one end away from the pressure rod. The limiting block is a wedge-shaped block, and the limiting block is divided into a releasing part and a fixing part. In the initial state of the limiting block, the fixing part is used to support the swing shaft, so that the swing shaft can only rotate but not swing. When the limiting block is in the downward state, the swing shaft loses the restriction of the limiting block, and at this time, there is a movable gap on the inner side of the release groove of the swing shaft.

[0011] Furthermore, the guiding mechanism includes a detection sleeve, a baffle rod is provided near the upper outer side of the detection sleeve, a torsion sleeve is provided at the bottom of the detection sleeve, the bottom of the torsion sleeve is connected to the pressure rod, a support spring is provided on the outside of the pressure rod between the torsion sleeve and the upper power frame, a sealing rubber ring is provided on the outer side of the support spring, a second extrusion block is provided on the inner side of the torsion sleeve, a second extrusion groove is provided on the power shaft corresponding to the second extrusion block, and the spiral direction of the second extrusion groove is the rotation direction of the upper power frame.

[0012] Furthermore, a mating conical surface is provided at one end of the push rod away from the limit block, a pressure rod is provided on the front side of the mating conical surface, friction lines are provided on the pressure rod corresponding to the mating conical surface, friction lines are also provided on the mating conical surface, and the friction lines are arranged horizontally.

[0013] Furthermore, both the first extrusion groove and the second extrusion groove are spiral grooves, and the pitch of the second extrusion groove is smaller than the pitch of the first extrusion groove.

[0014] Furthermore, the first extrusion block is integrally formed on the inner wall of the upper power frame.

[0015] Furthermore, the regulating blade located at the lower side is movably connected to the bottom matching frame via a ball head.

[0016] Furthermore, the inclination direction of the guide grooves on the upper adjusting blade and the central blade is the rotation direction of the upper power frame, and the inclination direction of the guide grooves on the lower adjusting blade is opposite to the inclination direction of the guide grooves on the central blade.

[0017] The beneficial effects of the present invention are as follows: the present invention utilizes a stirring mechanism that can change its state according to the resistance of the material to stir the material, thereby preventing the material from forming a stable vortex and causing stratification, and can intercept and press down the agglomerated material according to the guiding mechanism, so that the stirring mechanism is triggered by the adjusting mechanism to twist after changing its state, thereby increasing the stirring angle of the adjusting blade, making the stirring environment more chaotic, improving the stirring efficiency, shortening the stirring time, solving the problems of agglomeration and stratification, and reducing the problems of temperature rise and material deterioration caused by too long stirring time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a papermaking mixing device of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a stirring mechanism in a small diameter state of an embodiment of a papermaking mixing device of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a large-diameter state of a stirring mechanism of an embodiment of a papermaking mixing device of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a small diameter state of an adjusting blade of an embodiment of a papermaking mixing device of the present invention;

[0023] Figure 5 It is a schematic structural diagram of a large-diameter state of an adjusting blade of an embodiment of a papermaking mixing device of the present invention;

[0024] Figure 6 A schematic diagram of the distribution structure of the second extrusion groove and the first extrusion groove of an embodiment of a papermaking mixing device of the present invention;

[0025] Figure 7 A first isometric view of an adjusting mechanism of an embodiment of a papermaking mixing device of the present invention;

[0026] Figure 8 A schematic diagram of the detailed structure of the adjusting mechanism of an embodiment of a papermaking mixing device of the present invention;

[0027] Fig. 9 A second isometric view of the adjusting mechanism of an embodiment of a papermaking mixing device of the present invention;

[0028] Fig.10 It is a schematic diagram of the cooperation structure of the push rod and the pressure rod of an embodiment of a papermaking mixing device of the present invention;

[0029] Fig.11 A schematic diagram of the twisting structure of the regulating blades of an embodiment of a papermaking mixing device of the present invention;

[0030] Fig.12 It is a schematic diagram of the cooperation structure of a push rod and a limit block of an embodiment of a papermaking mixing device of the present invention;

[0031] Fig.13 It is a first isometric view of an initial state of a limit block of an embodiment of a papermaking mixing device of the present invention;

[0032] Fig.14 A top view of an initial state of a limit block of an embodiment of a papermaking mixing device of the present invention;

[0033] Fig.15 A second isometric view of an initial state of a limit block of an embodiment of a papermaking mixing device of the present invention;

[0034] Fig.16 It is a first isometric view of an embodiment of a papermaking mixing device of the present invention when the limit block is in a downward moving state;

[0035] Fig.17 It is a top view of an embodiment of a papermaking mixing device of the present invention when the limit block is in a downward moving state;

[0036] Fig.18 This is a second axonometric view of an embodiment of a papermaking mixing device of the present invention when the limit block is in a downward movement state.

[0037] In the figure: 1. stirring kettle; 2. power assembly; 3. power shaft; 4. stirring mechanism; 5. guiding mechanism; 6. adjusting mechanism; 41. adjusting blade; 42. central blade; 43. guiding groove; 44. upper power frame; 45. bottom matching frame; 46. reset spring; 47. first extrusion block; 48. first extrusion groove; 51. detection sleeve; 52. stop rod; 53. torsion sleeve; 54. sealing rubber ring; 55. push rod; 56. limit block; 57. pressure rod; 58. second extrusion block; 59. second extrusion groove; 510. linkage ring; 511. release groove; 61. connecting rod; 62. rotating shaft; 63. universal ball joint; 64. swing shaft. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] An embodiment of a papermaking mixing device of the present invention is as follows Figures 1 to 18 As shown, it includes a stirring tank 1 for storing raw materials and a power assembly 2 for providing power, the power assembly 2 is installed at the upper end of the stirring tank 1, and also includes a stirring mechanism 4 for stirring and mixing the raw materials and an adjusting mechanism 6 for adjusting the stirring state of the stirring mechanism 4. A power shaft 3 is installed at the power output end of the power assembly 2, the power shaft 3 extends into the stirring tank 1, the stirring mechanism 4 is installed on the outside of the bottom of the power shaft 3, the inner side of the stirring mechanism 4 is connected to the power shaft 3 through the adjusting mechanism 6, and a guiding mechanism 5 for processing the agglomeration of raw materials is installed on the upper side of the stirring mechanism 4;

[0040] The stirring mechanism 4 includes an upper power frame 44 and a bottom matching frame 45, which are movably connected to the outside of the power shaft 3, and the upper power frame 44 is located on the upper side of the bottom matching frame 45. A plurality of adjusting blades 41 are installed in a circumferential array on the outer sides of the upper power frame 44 and the bottom matching frame 45, and the two corresponding adjusting blades 41 are connected to the same central blade 42 through a pin shaft, and the adjusting blades 41 and the central blade 42 are both formed with guide grooves 43;

[0041] The upper adjusting blade 41 is connected to the upper power frame 44 through the adjusting mechanism 6. The adjusting mechanism 6 includes a connecting rod 61. One end of the connecting rod 61 is fixedly connected to the adjusting blade 41. The other end of the connecting rod 61 is provided with a rotating shaft 62. The rotating shaft 62 is rotatably connected to the upper power frame 44, and a torsion component for adjusting the torsion angle of the adjusting blade 41 is provided on the rotating shaft 62.

[0042] In this embodiment, a first extrusion block 47 is provided on the inner side of the upper power frame 44, and a first extrusion groove 48 matching the first extrusion block 47 is formed on the power shaft 3. The first extrusion groove 48 is a spiral groove, and the spiral direction is the rotation direction of the upper power frame 44. A return spring 46 is provided between the upper power frame 44 and the bottom matching frame 45.

[0043] In this embodiment, the torsion assembly of the rotating shaft 62 includes a universal ball joint 63 and a swing shaft 64, and the universal ball joint 63 and the swing shaft 64 are arranged on the two bottom surfaces of the rotating shaft 62. The universal ball joint 63 is movably connected to the upper power frame 44, and the swing shaft 64 is close to the axial direction of the upper power frame 44 and cooperates with the locking assembly of the guide mechanism 5. The locking assembly is used to adjust the locking state of the rotating shaft 62.

[0044] In this embodiment, the locking assembly includes a pressure rod 57, and a push rod 55 is provided on the side of the pressure rod 57 close to the swing shaft 64. The end of the push rod 55 away from the pressure rod 57 is connected to a limit block 56. The limit block 56 is a wedge-shaped block, and the limit block 56 is divided into a release part and a fixed part. In the initial state of the limit block 56, the fixed part is used to support the swing shaft 64, so that the swing shaft 64 can only rotate but not swing. When the limit block 56 is in the downward state, the swing shaft 64 loses the restriction of the limit block 56. At this time, there is a movable gap between the swing shaft 64 and the inner side of the release groove 511.

[0045] In this embodiment, the guiding mechanism 5 includes a detection sleeve 51, a baffle rod 52 is arranged near the upper outer side of the detection sleeve 51, a torsion sleeve 53 is arranged at the bottom of the detection sleeve 51, the bottom of the torsion sleeve 53 is connected to a pressure rod 57, a support spring is arranged outside the pressure rod 57 and located between the torsion sleeve 53 and the upper power frame 44, a sealing rubber ring 54 is arranged on the outer side of the support spring, a second extrusion block 58 is arranged on the inner side of the torsion sleeve 53, and a second extrusion groove 59 is arranged on the power shaft 3 corresponding to the second extrusion block 58, and the spiral direction of the second extrusion groove 59 is the rotation direction of the upper power frame 44.

[0046] In this embodiment, a mating conical surface is provided at one end of the push rod 55 away from the limit block 56, a pressure rod 57 is provided on the front side of the mating conical surface, friction lines are provided on the pressure rod 57 corresponding to the mating conical surface, friction lines are also provided on the mating conical surface, and the friction lines are arranged horizontally.

[0047] In this embodiment, both the first extrusion groove 48 and the second extrusion groove 59 are spiral grooves, and the pitch of the second extrusion groove 59 is smaller than the pitch of the first extrusion groove 48 .

[0048] In this embodiment, the first extrusion block 47 is integrally formed on the inner wall of the upper power frame 44 .

[0049] In this embodiment, the regulating blade 41 located at the lower side is movably connected to the bottom matching frame 45 via a ball head.

[0050] In this embodiment, the inclination direction of the guide groove 43 on the upper regulating blade 41 and the central blade 42 is the rotation direction of the upper power frame 44, and the inclination direction of the guide groove 43 on the lower regulating blade 41 is opposite to the inclination direction of the guide groove 43 on the central blade 42.

[0051] The working principle is as follows: the raw materials to be stirred are poured into the stirring tank 1, the power assembly 2 is started, and the motor of the power assembly 2 drives the power shaft 3 to rotate;

[0052] When the power shaft 3 rotates, because the power shaft 3 cooperates with the first extrusion block 47 through the first extrusion groove 48 formed thereon to drive the upper power frame 44 to rotate, and because the regulating blade 41 and the center blade 42 outside the upper power frame 44 are subject to the resistance of the raw material, after the power shaft 3 rotates, the reverse rotation resistance will drive the upper power frame 44 to be driven and rotated relatively slowly, and because a return spring 46 is provided between the upper power frame 44 and the bottom matching frame 45, at this time, the resistance of the regulating blade 41 and the center blade 42 will cause the first extrusion block 47 to slide downward inside the first extrusion groove 48, and the regulating blade 41 and the center blade 42 will be adjusted from the initial small diameter state. Figure 2 The change shown is the large diameter state Figure 3 As shown;

[0053] When the rotation speed of the power shaft 3 starts to stabilize slowly, because the material is a mixture, the density of each part is different, and the density inside the material is relatively chaotic during the mixing process, the regulating blade 41 and the central blade 42 will Figure 1 and Figure 2 The stirring process is changed back and forth between the two states, thereby increasing the degree of chaos during the stirring process and improving the stirring effect;

[0054] When the speed gradually stabilizes, the states of the regulating blade 41 and the central blade 42 also gradually stabilize. When the material is stabilized during the stirring process, the powder material may agglomerate due to the mixing of the additive and the powder. When agglomeration occurs, according to the Brazil nut effect, the agglomerated material will gradually float upward, and the detection sleeve 51 located at the top of the power shaft 3 will be blocked by the agglomerated material. At this time, the rotation speed of the detection sleeve 51 will be slower than the overall rotation speed of the stirring mechanism 4. The second extrusion block 58 inside the torsion sleeve 53 will be squeezed by the second extrusion groove 59, causing the torsion sleeve 53 to twist and sink. When the torsion sleeve 53 twists and sinks, it will drive the pressure rod 57 at the bottom to twist and sink, because in the initial state, the pressure rod 57 and There is a misalignment between the push rods 55, and there will be no relative movement between the two. When the torsion sleeve 53 drives the pressure rod 57 to twist and sink, the friction pattern on the pressure rod 57 cooperates with the friction pattern on the push rod 55, thereby driving the push rod 55 to sink inside the upper end power frame 44, and the push rod 55 drives the limit block 56 on the other side to sink. Through the linkage ring 510 at the bottom of the limit block 56, all the limit blocks 56 sink synchronously, and the swing shaft 64 loses the limit of the inner limit block 56. The swing shaft 64 can move in the release groove 511 with an increased space. When the adjusting blade 41 flips, one side of the swing shaft 64 is hollow. At the same time, due to the anti-rotation torsion force of the rotating material on the adjusting blade 41, the adjusting blade 41 and the center blade 42 will flip (such as Fig.11 As shown in the figure, the front openings of the regulating blades 41 and the central blade 42 become larger, and the spiral downward pressure of the detection sleeve 51 is used to push the agglomerated materials to the central blade 42 where the opening is formed, thereby breaking up the agglomerates, improving the stirring effect, improving the stirring efficiency, shortening the stirring time, solving the agglomeration and stratification problems, and reducing the problems of temperature rise and material deterioration caused by too long stirring time.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixing device for papermaking, comprising a stirring tank (1) for storing raw materials and a power assembly (2) for providing power, wherein the power assembly (2) is installed at the upper end of the stirring tank (1), and is characterized in that: It also comprises a stirring mechanism (4) for stirring and mixing the raw materials and an adjusting mechanism (6) for adjusting the stirring state of the stirring mechanism (4); a power shaft (3) is installed at the power output end of the power assembly (2); the power shaft (3) extends into the interior of the stirring kettle (1); the stirring mechanism (4) is installed on the outside of the bottom of the power shaft (3); the inside of the stirring mechanism (4) is connected to the power shaft (3) via the adjusting mechanism (6); and a guiding mechanism (5) for processing the agglomeration of the raw materials is installed on the upper side of the stirring mechanism (4); The stirring mechanism (4) comprises an upper power frame (44) and a bottom matching frame (45), wherein the upper power frame (44) and the bottom matching frame (45) are movably connected to the outside of the power shaft (3), the upper power frame (44) is located on the upper side of the bottom matching frame (45), and a plurality of adjusting blades (41) are installed in a circumferential array on the outer sides of the upper power frame (44) and the bottom matching frame (45), and two corresponding adjusting blades (41) are connected to the same central blade (42) via a pin shaft, and guide grooves (43) are formed on the adjusting blades (41) and the central blade (42); The upper regulating blade (41) is connected to the upper power frame (44) via the regulating mechanism (6), the regulating mechanism (6) comprising a connecting rod (61), one end of the connecting rod (61) being fixedly connected to the regulating blade (41), the other end of the connecting rod (61) being provided with a rotating shaft (62), the rotating shaft (62) being rotatably connected to the upper power frame (44), and a torsion component for adjusting the torsion angle of the regulating blade (41) being provided on the rotating shaft (62); A first extrusion block (47) is arranged inside the upper power frame (44); a first extrusion groove (48) cooperating with the first extrusion block (47) is formed on the power shaft (3); the first extrusion groove (48) is a spiral groove, and the spiral direction is the rotation direction of the upper power frame (44); a return spring (46) is arranged between the upper power frame (44) and the bottom matching frame (45); The torsion assembly of the rotating shaft (62) comprises a universal ball joint (63) and a swing shaft (64), wherein the universal ball joint (63) and the swing shaft (64) are arranged on two bottom surfaces of the rotating shaft (62), wherein the universal ball joint (63) is movably connected to the upper power frame (44), and the swing shaft (64) is close to the axial direction of the upper power frame (44) and cooperates with a locking assembly of the guide mechanism (5), wherein the locking assembly is used to adjust the locking state of the rotating shaft (62); The locking assembly comprises a pressure rod (57), a push rod (55) is arranged on one side of the pressure rod (57) close to the swing shaft (64), and an end of the push rod (55) away from the pressure rod (57) is connected to a limit block (56), the limit block (56) is a wedge-shaped block, and the limit block (56) is divided into a release portion and a fixed portion. In an initial state, the limit block (56) uses the fixed portion to support the swing shaft (64), so that the swing shaft (64) can only rotate but not swing. When the limit block (56) is in a downward movement state, the swing shaft (64) loses the restriction of the limit block (56), and at this time, there is a movable gap inside the release groove (511) of the swing shaft (64); The guiding mechanism (5) comprises a detection sleeve (51), a stop rod (52) is arranged near the upper outer side of the detection sleeve (51), a torsion sleeve (53) is arranged at the bottom of the detection sleeve (51), the bottom of the torsion sleeve (53) is connected to the pressure rod (57), a support spring is arranged outside the pressure rod (57) and between the torsion sleeve (53) and the upper power frame (44), a sealing rubber ring (54) is arranged on the outer side of the support spring, a second extrusion block (58) is arranged on the inner side of the torsion sleeve (53), and a second extrusion groove (59) is arranged on the power shaft (3) corresponding to the second extrusion block (58), and the spiral direction of the second extrusion groove (59) is the rotation direction of the upper power frame (44); A matching conical surface is arranged at one end of the push rod (55) away from the limit block (56), a pressure rod (57) is arranged on the front side of the matching conical surface, and a friction pattern is arranged on the pressure rod (57) corresponding to the matching conical surface. The matching conical surface is also provided with friction patterns, and the friction patterns are arranged in a transverse direction. The first extrusion groove (48) and the second extrusion groove (59) are both spiral grooves, and the pitch of the second extrusion groove (59) is smaller than the pitch of the first extrusion groove (48).

2. A papermaking mixing device according to claim 1, characterized in that: The first extrusion block (47) is integrally formed on the inner wall of the upper power frame (44).

3. A papermaking mixing device according to claim 1, characterized in that: The regulating blade (41) located at the lower side is movably connected to the bottom matching frame (45) via a ball head.

4. A papermaking mixing device according to claim 1, characterized in that: The inclination direction of the guide groove (43) on the upper regulating blade (41) and the central blade (42) is the rotation direction of the upper power frame (44), and the inclination direction of the guide groove (43) on the lower regulating blade (41) is opposite to the inclination direction of the guide groove (43) on the central blade (42).

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