stirring device

Abstract

The present application relates to the technical field of mixing and stirring, and discloses a stirring device, comprising: a mounting bracket, a stirring barrel, and a stirring assembly, wherein the stirring barrel is fixedly mounted on the mounting bracket, a stirring space is formed in the stirring barrel, the stirring assembly comprises a first stirring shaft and a stirring paddle, the first stirring shaft is rotatably mounted on the mounting bracket, and the first stirring shaft portion is disposed in the stirring space, the stirring paddle is disposed in the stirring space and fixedly connected to the first stirring shaft, the stirring paddle comprises a plurality of stirring portions, the stirring assembly further comprises a first scraper, the first scraper is disposed in the stirring space and fixedly connected to the outer peripheral wall of the first stirring shaft, the first scraper extends as a whole in a direction approaching the stirring barrel along the radial direction of the first stirring shaft, the first scraper is spaced apart from the stirring paddle along the first direction, and the first scraper is spaced apart from the bottom wall of the stirring barrel along the first direction. Thus, the stirring performance of the stirring device is improved by the coordinated use of the stirring paddle and the first scraper.

Description

Technical Field

[0001] The present application relates to the technical field of mixing and stirring, and in particular to a stirring device. Background Art

[0002] In the lithium battery manufacturing process, wet stirring is usually used to make electrodes. Generally speaking, wet stirring requires adding components such as active materials, conductive carbon black, dispersants and solvents into a stirring device in a certain proportion and order, and forming a stable fixed suspension through stirring of the stirring device.

[0003] With the rapid development of lithium battery technology, people have put forward higher requirements for the performance of lithium batteries. However, the energy density of electrodes produced by wet stirring method is low and it is difficult to meet the use requirements. Therefore, dry stirring has gradually come into people's view. Dry stirring does not require the use of solvents and can make the contact between active materials and conductive carbon black closer, thereby increasing the compaction density of the electrode, which is beneficial to improving the energy density of the electrode.

[0004] However, dry stirring requires high stirring performance from the stirring device. Current stirring equipment is prone to deformation, wall scraping, and even impaired stirring during dry stirring. Therefore, improving the stirring performance of stirring devices to better suit dry stirring applications in electrode production is a pressing technical challenge. Summary of the Invention

[0005] The present application provides a stirring device, which improves the stirring performance of the stirring device by using a stirring paddle and a first scraper in combination.

[0006] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0007] In a first aspect, an embodiment of the present application provides a stirring device, comprising:

[0008] Mounting bracket;

[0009] A mixing barrel is fixed on the mounting bracket, and a mixing space is formed in the mixing barrel;

[0010] The stirring assembly includes a first stirring shaft and a stirring paddle, the first stirring shaft is rotatably disposed on the mounting bracket along the axial direction of the first stirring shaft, the axial direction of the first stirring shaft is parallel to the first direction, the first stirring shaft is partially disposed in the stirring space, the stirring paddle is disposed in the stirring space and is fixedly connected to the first stirring shaft, the stirring paddle includes a plurality of stirring portions, each stirring portion extends in a direction close to the stirring barrel along the radial direction of the first stirring shaft, and the plurality of stirring portions are sequentially spaced along the circumference of the first stirring shaft;

[0011] Among them, the stirring assembly also includes a first scraper, which is arranged in the stirring space and fixedly connected to the outer peripheral wall of the first stirring shaft. Along the radial direction of the first stirring shaft, the first scraper extends as a whole in the direction close to the stirring barrel. Along the first direction, the first scraper is separated from the stirring paddle. The first scraper is closer to the bottom wall of the stirring barrel than the stirring paddle, and along the first direction, the first scraper is separated from the bottom wall of the stirring barrel.

[0012] According to the stirring device proposed in the embodiment of the first aspect of the present application, when the first stirring shaft rotates, the stirring paddle and the first scraper can simultaneously stir the material in the stirring space, wherein the stirring paddle forms a main stirring zone, and the first scraper stirs the material near the bottom wall of the stirring barrel to generate local turbulence, thereby forming an auxiliary disturbance zone. In this way, when the stirring paddle and the first scraper are used in conjunction with each other, the main stirring zone and the auxiliary disturbance zone can form a composite flow field under the superposition effect, which is conducive to enhancing the circumferential movement of the material in the stirring space, thereby improving the stirring effect of the stirring device. At the same time, under the action of the composite flow field, the resistance and shear force encountered by the stirring paddle in the process of stirring the material will also be reduced accordingly, thereby avoiding defects such as deformation and wall scraping of the stirring paddle.

[0013] Optionally, along the first direction, a spacing distance d between the first scraper and the bottom wall of the mixing barrel satisfies the relationship: 2 mm ≤ d ≤ 5 mm.

[0014] Optionally, there are multiple first scrapers, and the multiple first scrapers are arranged in sequence and at intervals along the circumference of the first stirring shaft.

[0015] Optionally, the first scraper includes a scraper body and a bent portion, the scraper body is fixedly connected to the outer peripheral wall of the first stirring shaft, and along the radial direction of the first stirring shaft, the scraper body extends toward the stirring barrel, and the end of the scraper body away from the first stirring shaft is connected to the bent portion;

[0016] Along the radial direction of the first stirring shaft, the bent portion is arranged between the scraper body and the stirring barrel, and along the first direction, the bent portion is arranged on a side of the scraper body away from the bottom wall of the stirring barrel.

[0017] Optionally, a first angle a is formed between the scraper body and the bent portion, satisfying the relationship: 120°≤a≤160°.

[0018] Optionally, the scraper body has a first cutting surface, and along the rotation direction of the first stirring shaft, the first cutting surface is inclined toward the bottom wall of the stirring barrel.

[0019] Optionally, the bending portion has a first horizontal plane and a second cutting plane connected to each other. Along the rotation direction of the first stirring shaft, the second cutting plane is inclined toward the bottom wall of the stirring barrel. A second angle b is formed between the first horizontal plane and the second cutting plane, satisfying the relationship: 20°≤b≤40°.

[0020] Optionally, the first scraper is configured as an arc-shaped scraper.

[0021] Optionally, the stirring assembly further includes a stirring column, the stirring portion is provided with at least one mounting hole, the stirring column is fixedly mounted on the stirring portion through the mounting hole, and along the first direction, both ends of the stirring column extend out of the stirring portion respectively.

[0022] Optionally, the stirring assembly further comprises a guide cone, which is arranged in the stirring space and fixedly connected to the first stirring shaft along the first direction and concentrically arranged with the first stirring shaft;

[0023] Along the first direction, the guide cone is arranged on a side of the stirring paddle away from the first scraper.

[0024] Optionally, the stirring assembly further comprises a shaft sleeve, the shaft sleeve being fixedly mounted on the mounting bracket, a portion of the first stirring shaft being rotatably mounted in the shaft sleeve, and the shaft sleeve being spaced apart from the first stirring shaft in a radial direction of the first stirring shaft and forming an air inlet passage;

[0025] Along the first direction, the shaft sleeve is inserted into the mixing barrel so that part of the shaft sleeve is arranged in the mixing space, wherein the air inlet channel is communicated with the mixing space, and the shaft sleeve is provided with an air inlet hole communicated with the air inlet channel.

[0026] Optionally, the stirring device further comprises: a honeycomb jacket, which is arranged in the side wall of the stirring barrel, a heat exchange channel is formed in the honeycomb jacket, and the side wall of the stirring barrel is also provided with a medium inlet and a medium outlet connected to the heat exchange channel.

[0027] Optionally, along the first direction, the upper end of the stirring barrel has a feeding hole communicating with the stirring space;

[0028] The stirring device also includes: a cover plate and a first driving cylinder. The cover plate is arranged opposite to the feed hole along the first direction. The first driving cylinder is fixed to the mounting bracket. The first driving cylinder is suitable for driving the cover plate to move along the first direction so that the cover plate can selectively open or cover the feed hole.

[0029] Optionally, the stirring device also includes: a mounting frame and a guide column, the mounting frame is fixed to the mounting bracket, the first driving cylinder is fixed to the mounting bracket, along the first direction, the upper end of the guide column is fixedly connected to the cover plate, the mounting frame is provided with a guide hole that cooperates with the guide column, and along the first direction, the guide column is movable relative to the guide hole.

[0030] Optionally, along the first direction, the lower end of the guide column is fixedly connected to the limiting member, and the stirring device also includes a plug-in structure, which is also suitable for selectively plugging and cooperating with the limiting member when the cover plate opens the feed hole to limit the movement of the limiting member along the first direction.

[0031] Optionally, the stirring device also includes: a second stirring shaft and at least one second scraper, the second stirring shaft is rotatably provided on the cover plate along the axial direction of the second stirring shaft, the axial direction of the second stirring shaft is parallel to the first direction, the second stirring shaft is partially provided in the stirring space, the second scraper is provided in the stirring space and is fixedly connected to the outer peripheral wall of the second stirring shaft, and a scraping portion is formed at the end of the second scraper away from the second stirring shaft along the radial direction of the second stirring shaft, the scraping portion extends along the first direction, and the second stirring shaft is suitable for driving the scraping portion to clean the inner peripheral wall of the stirring barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 A schematic diagram of a stirring device provided in the first embodiment of the present application;

[0034] Figure 2 A schematic diagram of a stirring device provided in a second embodiment of the present application;

[0035] Figure 3 A schematic diagram of a stirring device provided in a third embodiment of the present application;

[0036] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle;

[0037] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0038] Figure 6 A perspective view of a stirring assembly provided in accordance with one embodiment of the present application;

[0039] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle;

[0040] Figure 8 A schematic diagram of the angle between the first horizontal plane and the second cutting plane provided in one embodiment of the present application;

[0041] Figure 9 A schematic diagram of a stirring assembly provided by one embodiment of the present application from a first perspective;

[0042] Figure 10 yes Figure 9 A partial enlarged view of point D in the middle;

[0043] Figure 11 A top view of a stirring assembly provided in accordance with one embodiment of the present application;

[0044] Figure 12 A schematic diagram of a stirring assembly provided from a second perspective according to an embodiment of the present application;

[0045] Figure 13 A schematic diagram of a stirring device provided in a fourth embodiment of the present application;

[0046] Figure 14 A schematic diagram of a honeycomb jacket provided in one embodiment of the present application;

[0047] Figure 15 A schematic diagram of a stirring device provided in a fifth embodiment of the present application;

[0048] Figure 16 This is a cross-sectional view of the stirring device provided in the sixth embodiment of the present application.

[0049] [Description of Reference Numerals]

[0050] stirring device 100;

[0051] Mounting bracket 1;

[0052] Mixing barrel 2; mixing space 21; bottom wall 22; feed hole 23; discharge hole 24;

[0053] Stirring assembly 3; first stirring shaft 31; pulley protrusion 311; stirring paddle 32; stirring portion 321; mounting hole 3211; first scraper 33; scraper body 331; first cutting surface 3311; bent portion 332; first horizontal surface 3321; second cutting surface 3322; stirring column 34; guide cone 35; bushing 36; air inlet 361; main shaft bearing 37; oil seal 38;

[0054] Honeycomb jacket 4; heat exchange channel 41; jacket outer wall 42; jacket protrusion 43; jacket welding point 44;

[0055] Cover plate 5;

[0056] First driving cylinder 6;

[0057] Mounting frame 7; guide hole 71;

[0058] Guide column 8;

[0059] Limiting member 9; limiting hole 91;

[0060] Second stirring shaft 10;

[0061] Second scraper 11; scraping portion 111;

[0062] a first motor 12;

[0063] Belt 13;

[0064] a second motor 14;

[0065] Discharge pipe 15; discharge hole 151; discharge cavity 152;

[0066] Blocking piece 16;

[0067] Second driving cylinder 17;

[0068] The first direction X. DETAILED DESCRIPTION

[0069] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0070] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0071] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0072] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0073] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0074] The term "multiple" used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two (including two) groups, and "multiple sheets" refers to more than two (including two) sheets.

[0075] It should be noted that in the lithium battery manufacturing process, wet stirring is usually used to make electrodes. Generally speaking, wet stirring requires adding components such as active materials, conductive carbon black, dispersants and solvents into a stirring device in a certain proportion and order, and forming a stable fixed suspension through stirring of the stirring device.

[0076] With the rapid development of lithium battery technology, people have put forward higher requirements for the performance of lithium batteries. However, the energy density of electrodes produced by wet stirring method is low and it is difficult to meet the use requirements. Therefore, dry stirring has gradually come into people's view. Dry stirring does not require the use of solvents, thereby avoiding the use and recovery of solvents and reducing the energy consumption of electrode production. At the same time, the electrodes produced by dry stirring can make the contact between active materials and conductive carbon black closer, thereby increasing the compaction density of the electrode, which is conducive to improving the energy density of the electrode.

[0077] However, dry stirring requires high stirring performance from the stirring device. Current stirring equipment is prone to deformation, wall scraping, and even impossibility of stirring during dry stirring. Therefore, improving the stirring performance of stirring devices to better suit dry stirring production of electrodes is a pressing technical challenge.

[0078] Based on this, the present application proposes a stirring device 100, when the first stirring shaft 31 rotates, the stirring paddle 32 and the first scraper 33 can simultaneously stir the material in the stirring space 21, wherein the stirring paddle 32 forms a main stirring zone, and the first scraper 33 stirs the material near the bottom wall 22 of the stirring barrel 2 to generate local turbulence, thereby forming an auxiliary disturbance zone. In this way, when the stirring paddle 32 and the first scraper 33 are used in conjunction with each other, the main stirring zone and the auxiliary disturbance zone can form a composite flow field under the superposition effect, which is conducive to enhancing the circumferential movement of the material in the stirring space 21, thereby improving the stirring effect of the stirring device 100. At the same time, under the action of the composite flow field, the resistance and shear force encountered by the stirring paddle 32 during the stirring process will also be reduced accordingly, thereby avoiding defects such as deformation and wall scraping of the stirring paddle 32.

[0079] The stirring device 100 proposed in the embodiment of the present application is described below with reference to the accompanying drawings.

[0080] like Figures 1-16 As shown, the stirring device 100 according to the first embodiment of the present application includes: a mounting bracket 1, a stirring barrel 2 and a stirring assembly 3.

[0081] Among them, the mixing barrel 2 is fixed to the mounting bracket 1, and a mixing space 21 is formed in the mixing barrel 2. The mixing assembly 3 includes a first mixing shaft 31 and a mixing paddle 32. The first mixing shaft 31 is rotatably arranged on the mounting bracket 1 along the axial direction of the first mixing shaft 31. The axial direction of the first mixing shaft 31 is parallel to the first direction X. The first mixing shaft 31 is partially arranged in the mixing space 21. The mixing paddle 32 is arranged in the mixing space 21 and is fixedly connected to the first mixing shaft 31. The mixing paddle 32 includes a plurality of mixing parts 321. Along the radial direction of the first mixing shaft 31, each mixing part 321 faces toward the mixing barrel 2. direction, and multiple stirring parts 321 are arranged in sequence along the circumference of the first stirring shaft 31, wherein the stirring assembly 3 also includes a first scraper 33, the first scraper 33 is arranged in the stirring space 21 and is fixedly connected to the outer peripheral wall of the first stirring shaft 31, along the radial direction of the first stirring shaft 31, the first scraper 33 as a whole extends in the direction close to the stirring barrel 2, along the first direction X, the first scraper 33 is separated from the stirring paddle 32, the first scraper 33 is closer to the bottom wall 22 of the stirring barrel 2 than the stirring paddle 32, and along the first direction X, the first scraper 33 is separated from the bottom wall 22 of the stirring barrel 2.

[0082] Specifically, Figure 4 Taking the placement direction of the stirring device 100 as an example, the mounting bracket 1 has a horizontal mounting platform, the stirring barrel 2 is generally cylindrical and extends along the first direction X (up and down direction), the mounting platform is directly below the stirring barrel 2, and the stirring barrel 2 is fixedly mounted on the mounting platform of the mounting bracket 1, and the fixing mounting method includes but is not limited to bolt connection, welding, etc.

[0083] Furthermore, a stirring space 21 is formed in the stirring barrel 2, and the stirring space 21 matches the size and shape of the stirring barrel 2. For example, the stirring space 21 is cylindrical as a whole extending along the first direction X (up and down direction), wherein the stirring space 21 pre-stores the block material to be stirred.

[0084] In order to realize the stirring function of the stirring device 100, the stirring device 100 is further provided with a stirring assembly 3, wherein the first stirring shaft 31 of the stirring assembly 3 is a rotatable shaft, the axial direction of the first stirring shaft 31 is parallel to the first direction X, and the first stirring shaft 31 is rotatable relative to the mounting bracket 1 along the axial direction of the first stirring shaft 31. Specifically, Figure 4 As shown, a portion of the first stirring shaft 31 is located in the stirring space 21 , and another portion passes through the bottom wall 22 of the stirring barrel 2 to be rotatably connected to the mounting bracket 1 below the stirring barrel 2 .

[0085] In some embodiments of the present application, the first stirring shaft 31 is driven by the first motor 12. Figure 6 、 Figure 9 and Figure 12 As shown, the portion of the first stirring shaft 31 located outside the stirring barrel 2 is provided with a pulley protrusion 311 that cooperates with the belt 13 along the circumference of the first stirring shaft 31. The pulley protrusion 311 is connected to the output shaft of the first motor 12 through the belt 13. When the output shaft of the first motor 12 rotates, the first stirring shaft 31 rotates along its own axial direction relative to the mounting bracket 1 under the cooperation of the belt 13 and the pulley protrusion 311, thereby realizing the driving of the first stirring shaft 31.

[0086] In some embodiments of the present application, the first stirring shaft 31 can be directly connected to the mounting bracket 1 for rotation, or can be connected to the mounting bracket 1 for rotation through other components. The specific setting is based on actual needs and is not specifically limited here.

[0087] Furthermore, if Figure 4 As shown, the stirring assembly 3 also includes a stirring paddle 32, which is arranged in the stirring space 21 and is fixedly connected to the portion of the first stirring shaft 31 located in the stirring space 21. For example, the stirring paddle 32 can be fixedly connected to the outer peripheral wall of the first stirring shaft 31 located in the stirring space 21. In this way, when the first stirring shaft 31 rotates along the axial direction of the first stirring shaft 31, the stirring paddle 32 also rotates along the axial direction of the first stirring shaft 31 driven by the first stirring shaft 31. As a specific example, Figure 4 、 Figure 6 and Figure 11As shown, the stirring paddle 32 includes six stirring parts 321. Along the radial direction of the first stirring shaft 31, each stirring part 321 extends toward the side wall of the stirring barrel 2. It can be understood that in order to ensure the normal rotation of the stirring paddle 32, each stirring part 321 has a certain gap with the side wall of the stirring barrel 2 along the radial direction of the first stirring shaft 31. At the same time, the six stirring parts 321 are arranged in sequence along the circumference of the first stirring shaft 31. In this way, when the stirring paddle 32 rotates along the axial direction of the first stirring shaft 31, the six stirring parts 321 can form a main stirring zone. The main stirring zone forms an axial or radial flow field along the first stirring shaft 31, thereby driving the material in the stirring space 21 to stir, so as to stir and break the block material into particles or powder.

[0088] However, for dry stirring in the lithium battery production process, since dry stirring does not require the use of solvents, it is difficult to meet the stirring requirements by relying solely on a single-design stirring paddle 32. At the same time, during the stirring process, the shear force and resistance exerted on the stirring paddle 32 are too large, and the stirring paddle 32 is prone to deformation, wall scraping, and even the stirring paddle 32 may be unable to stir.

[0089] Based on this, in order to further improve the stirring performance of the stirring device 100, the present application further provides a first scraper 33 on the basis of the single stirring paddle 32, such as Figure 4 As shown, the first scraper 33 is disposed in the stirring space 21 and is fixedly connected to the outer peripheral wall of the first stirring shaft 31. Along the radial direction of the first stirring shaft 31, the first scraper 33 extends toward the side wall of the stirring barrel 2. Figure 6 As shown, the first scraper 33 can be constructed as a long strip as a whole. It can be understood that in order to ensure the normal rotation of the first scraper 33, the first scraper 33 has a certain gap with the side wall of the mixing barrel 2 along the radial direction of the first stirring shaft 31.

[0090] Furthermore, along the first direction X, the first scraper 33 is spaced apart from the stirring paddle 32 and the bottom wall 22 of the stirring barrel 2, and the first scraper 33 is arranged between the stirring paddle 32 and the bottom wall 22 of the stirring barrel 2. In this way, the first scraper 33 rotates along the axial direction of the first stirring shaft 31 under the drive of the first stirring shaft 31, and because the first scraper 33 is closer to the bottom wall 22 of the stirring barrel 2, the first scraper 33 can stir the material to be stirred near the bottom wall 22 of the stirring barrel 2, thereby generating local turbulence between the stirring paddle 32 and the first scraper 33, and the local turbulence can form an auxiliary disturbance zone. According to the principles of fluid mechanics, the superposition of the main stirring zone and the auxiliary disturbance zone can form a composite flow field with stronger stirring ability, which is beneficial to enhance the circumferential movement of the material in the stirring space 21, and further beneficial to improve the stirring effect of the stirring device 100. At the same time, under the action of the composite flow field, the resistance and shear force encountered by the stirring paddle 32 during the stirring process will also be reduced accordingly, thereby avoiding defects such as deformation and wall scraping of the stirring paddle 32.

[0091] In some embodiments of the present application, the stirring paddle 32 and the first scraper 33 are used in conjunction with each other, and the stirring assembly 3 realizes an upper stirring and lower scraping working mode in the stirring space 21 as a whole, wherein the radial dimension of the first scraper 33 along the first stirring shaft 31 is greater than the radial dimension of the stirring paddle 32 along the first stirring shaft 31. For example, Figure 4 As shown, along the radial direction of the first stirring shaft 31, the outermost edge of the first scraper 33 is closer to the side wall of the stirring barrel 2 than the outermost edge of the stirring paddle 32. As a result, the first scraper 33 can exert a greater shear force on the material during rotation, thereby further reducing the resistance encountered by the stirring paddle 32 when processing the material, thereby improving the stirring efficiency of the stirring device 100.

[0092] It can be understood that the high shear force stirring component 3 can fully break up and disperse the conductive material agglomerates, thereby achieving micro-mixing of the materials. At the same time, the coordinated use of the stirring paddle 32 and the first scraper 33 can also make the materials move in multiple dimensions, thereby quickly and evenly mixing various materials, effectively avoiding dead corners or retention phenomena. With such a setting, when processing materials with different particle sizes and large differences in specific gravity, the stirring component 3 in this application can effectively avoid stratification or agglomeration problems.

[0093] To sum up, according to the stirring device 100 proposed in the embodiment of the first aspect of the present application, when the first stirring shaft 31 rotates, the stirring paddle 32 and the first scraper 33 can simultaneously stir the material in the stirring space 21, wherein the stirring paddle 32 forms a main stirring zone, and the first scraper 33 stirs the material near the bottom wall 22 of the stirring barrel 2 to generate local turbulence, thereby forming an auxiliary disturbance zone. In this way, when the stirring paddle 32 and the first scraper 33 are used in conjunction with each other, the main stirring zone and the auxiliary disturbance zone can form a composite flow field under the superposition effect, which is beneficial to enhance the circumferential movement of the material in the stirring space 21, thereby improving the stirring effect of the stirring device 100. At the same time, under the action of the composite flow field, the resistance and shear force encountered by the stirring paddle 32 during the stirring process will also be reduced accordingly, thereby avoiding defects such as deformation and wall scraping of the stirring paddle 32.

[0094] In some embodiments of the present application, along the first direction X, the spacing distance between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 is d, which satisfies the relationship: 2 mm ≤ d ≤ 5 mm.

[0095] Specifically, the spacing distance between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 needs to be set within a reasonable range. If the spacing distance between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 is too small, the first scraper 33 may be unable to rotate due to obstruction of the material. If the spacing distance between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 is too large, the first scraper 33 cannot achieve a good cutting effect on the block material during rotation, thereby affecting the stirring effect of the material.

[0096] Based on this, in this application, the spacing between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 is set to be greater than or equal to 2 mm and less than or equal to 5 mm. For example, the spacing between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 can be 2 mm, 2.5 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc. The specific spacing is set according to actual conditions and is not specifically limited here. In this way, setting the spacing between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 within a reasonable range can not only ensure the normal rotation of the first scraper 33, but also effectively cut the bulk material, thereby improving cutting efficiency.

[0097] Furthermore, during dry stirring, a material deposition area is more likely to form near the bottom wall 22 of the stirring barrel 2. The first scraper 33 is designed to be close to the bottom wall 22 of the stirring barrel 2. During the rotation of the first scraper 33, the first scraper 33 can scrape up the material deposited near the bottom wall 22 and throw it from the bottom to the top, so that the material near the bottom wall 22 can re-enter the main stirring area of ​​the stirring paddle 32, avoiding the formation of a stirring blind spot in the stirring device 100. At the same time, a material stirring cycle can also be formed. For example, the material can be circulated and stirred from bottom to top or from top to bottom in the stirring space 21. In this way, the stirring effect of the material can be further improved through the circulatory stirring of the material.

[0098] In some embodiments of the present application, Figure 11 As shown, there are a plurality of first scrapers 33 , which are arranged in sequence and spaced apart along the circumference of the first stirring shaft 31 .

[0099] That is to say, the stirring component 3 can be provided with multiple first scrapers 33, and the multiple first scrapers 33 are arranged in sequence along the circumference of the first stirring shaft 31. For example, the number of first scrapers 33 can be 2, 3, 4, or 5, which is set according to actual conditions and is not specifically limited here.

[0100] It can be understood that each first scraper 33 is disposed in the stirring space 21 and is fixedly connected to the outer peripheral wall of the first stirring shaft 31 , and along the radial direction of the first stirring shaft 31 , each first scraper 33 extends as a whole toward the direction close to the stirring barrel 2 .

[0101] Further, as a specific example, Figure 11 As shown, the stirring assembly 3 is provided with two first scrapers 33, and the two first scrapers 33 are arranged at intervals along the circumference of the first stirring shaft 31. In this way, when the first stirring shaft 31 rotates, the two first scrapers 33 can stir the material to be stirred near the bottom wall 22 of the stirring barrel 2, thereby helping to further enhance the stirring effect of the stirring device 100. At the same time, the two first scrapers 33 can also increase the shear force applied to the material, so it is more suitable for situations where the shear force is large in dry stirring, thereby improving the dry stirring efficiency of the stirring device 100.

[0102] In some embodiments of the present application, Figure 7 and Figure 10As shown, the first scraper 33 includes a scraper body 331 and a bending portion 332. The scraper body 331 is fixedly connected to the outer peripheral wall of the first stirring shaft 31. Along the radial direction of the first stirring shaft 31, the scraper body 331 extends toward the direction close to the stirring barrel 2, and the end of the scraper body 331 away from the first stirring shaft 31 is connected to the bending portion 332. Along the radial direction of the first stirring shaft 31, the bending portion 332 is arranged between the scraper body 331 and the stirring barrel 2, and along the first direction X, the bending portion 332 is arranged on the side of the scraper body 331 away from the bottom wall 22 of the stirring barrel 2.

[0103] Specifically, combined Figure 7 and Figure 11 As shown, the first scraper 33 is composed of a scraper body 331 and a bending portion 332 that are interconnected, wherein the scraper body 331 extends as a whole along the radial direction of the first stirring shaft 31 toward the side wall of the stirring barrel 2. For example, the scraper body 331 can be constructed as a horizontal strip structure, or as a horizontally set and bent arc strip structure, or as a horizontally set and serpentine-bent strip structure. The specific shape of the scraper body 331 is not limited here.

[0104] Furthermore, one end of the scraper body 331 is fixedly connected to the outer peripheral wall of the first stirring shaft 31, and the other end is connected to the bent portion 332, wherein the bent portion 332 is entirely arranged above the scraper body 331 along the first direction X, and the bent portion 332 is arranged between the scraper body 331 and the stirring barrel 2 along the radial direction of the first stirring shaft 31. It should be noted that, as Figure 7 As shown, in order to ensure the normal rotation of the first scraper 33, the bent portion 332 has a certain gap with the side wall of the mixing barrel 2 along the radial direction of the first stirring shaft 31. Furthermore, in order to facilitate the production of the first scraper 33, an arc-shaped connecting surface is formed at the connection between the scraper body 331 and the bent portion 332.

[0105] When the first stirring shaft 31 rotates, the bent portion 332 of the first scraper 33 acts as a guide portion, which is more conducive to the first scraper 33 throwing the material deposited near the bottom wall 22 from bottom to top, so that as much material as possible near the bottom wall 22 re-enters the main stirring area of ​​the stirring paddle 32, which can better form a material stirring cycle and is also conducive to further improving the stirring effect of the material.

[0106] In some embodiments of the present application, a first angle a is formed between the scraper body 331 and the bent portion 332 , satisfying the relationship: 120°≤a≤160°.

[0107] Specifically, the first scraper 33 is used according to Figure 9The placement direction is used as an example to illustrate that the scraper body 331 is set horizontally as a whole. Along the radial direction of the first stirring shaft 31, the bending portion 332 bends and extends obliquely upward away from the scraper body 331. Figure 10 As shown, a first angle a is formed between the scraper body 331 and the bending portion 332. It can be understood that a virtual connecting surface is formed at the connection between the inner end of the bending portion 332 and the scraper body 331 and the bending portion 332, wherein the first angle a is the obtuse angle formed by the virtual connecting surface and the horizontal plane.

[0108] It should be noted that the first angle a formed between the scraper body 331 and the bending portion 332 needs to be set within a reasonable range. If the first angle a is too small, it will be detrimental to the bending production of the bending portion 332. If the first angle a is too large, the bending portion 332 will have a poor effect in guiding the material upward, which is not conducive to forming a complete up and down stirring cycle.

[0109] Based on this, in this application, the first angle a between the scraper body 331 and the bent portion 332 is set to be greater than or equal to 120° and less than or equal to 160°. For example, the first angle a can be 120°, 125°, 130°, 140°, 150°, 160°, etc., and is set according to actual conditions and is not specifically limited here. In this way, the first angle a formed between the scraper body 331 and the bent portion 332 is set within a reasonable range to prevent the first angle a from being too large or too small. This not only facilitates the production of the bent portion 332 of the first scraper 33, but also improves the diversion effect on the material, thereby improving the stirring effect of the stirring device 100.

[0110] In some embodiments of the present application, Figure 7 As shown, the scraper body 331 has a first cutting surface 3311 , and along the rotation direction of the first stirring shaft 31 , the first cutting surface 3311 is inclined toward the direction close to the bottom wall 22 of the stirring barrel 2 .

[0111] It should be noted that the rotation direction of the first stirring shaft 31 is the direction in which the first stirring shaft 31 rotates along its own axial direction, wherein the rotation direction of the first stirring shaft 31 can be clockwise along its own axial direction or counterclockwise along its own axial direction.

[0112] Furthermore, in order to improve the cutting performance of the scraper body 331, the first cutting surface 3311 is inclined toward the direction close to the bottom wall 22 of the mixing barrel 2 along the rotation direction of the first stirring shaft 31. For example, when the rotation direction of the first stirring shaft 31 is clockwise along its own axis, the first cutting surface 3311 is inclined toward the direction close to the bottom wall 22 of the mixing barrel 2 along the clockwise rotation direction of the first stirring shaft 31, that is, the thickness of the first cutting surface 3311 gradually decreases along the clockwise rotation direction of the first stirring shaft 31. With such an arrangement, when the first stirring shaft 31 rotates clockwise along its own axis, the scraper body 331 can increase the shear force of the scraper body 331 by setting the inclined first cutting surface 3311, thereby being able to better cut the material in front of the rotation direction of the scraper body 331, which is more conducive to cutting large pieces of material into small pieces of material, and further helping to further improve the stirring effect of the stirring device 100.

[0113] Similarly, when the first stirring shaft 31 rotates counterclockwise along its own axis, the first cutting surface 3311 is inclined toward the bottom wall 22 of the stirring barrel 2 along the counterclockwise rotation direction of the first stirring shaft 31, that is, the thickness of the first cutting surface 3311 gradually decreases along the counterclockwise rotation direction of the first stirring shaft 31. This design can also increase the shear force of the scraper body 331, which will not be repeated here.

[0114] In some embodiments of the present application, Figure 7 and Figure 8 As shown, the bending portion 332 has a first horizontal surface 3321 and a second cutting surface 3322 connected to each other. Along the rotation direction of the first stirring shaft 31, the second cutting surface 3322 is inclined toward the direction close to the bottom wall 22 of the stirring barrel 2. A second angle b is formed between the first horizontal surface 3321 and the second cutting surface 3322, satisfying the relationship: 20°≤b≤40°.

[0115] Specifically, the first stirring shaft 31 may rotate clockwise along its own axis, or may rotate counterclockwise along its own axis.

[0116] Furthermore, the bending portion 332 is provided with a first horizontal surface 3321 and a second cutting surface 3322 connected to each other. It can be understood that the first scraper 33 is provided according to the Figure 9Taking the placement direction as an example, the first horizontal surface 3321 is in a horizontal state. In order to improve the cutting performance of the bent portion 332, the second cutting surface 3322 is tilted toward the direction close to the bottom wall 22 of the mixing bucket 2 along the rotation direction of the first stirring shaft 31. For example, when the rotation direction of the first stirring shaft 31 is clockwise along its own axis, the second cutting surface 3322 is tilted toward the direction close to the bottom wall 22 of the mixing bucket 2 along the clockwise rotation direction of the first stirring shaft 31, that is, along the clockwise rotation direction of the first stirring shaft 31, the thickness of the second cutting surface 3322 gradually decreases. When the rotation direction of the first stirring shaft 31 is counterclockwise along its own axis, the second cutting surface 3322 is tilted toward the direction close to the bottom wall 22 of the mixing bucket 2 along the counterclockwise rotation direction of the first stirring shaft 31, that is, along the counterclockwise rotation direction of the first stirring shaft 31, the thickness of the second cutting surface 3322 gradually decreases.

[0117] refer to Figure 8 As shown, a second angle b is formed between the first horizontal plane 3321 and the second cutting plane 3322 . It can be understood that the second angle b is the acute angle formed by the first horizontal plane 3321 and the second cutting plane 3322 .

[0118] It should be noted that the second angle b formed by the first horizontal plane 3321 and the second cutting surface 3322 needs to be set within a reasonable range. If the second angle b is too small, the cutting effect of the bent portion 332 is poor, which is not conducive to the stirring of the stirring device 100. If the second angle b is too large, the material resistance encountered by the bent portion 332 is large, and the bent portion 332 is severely worn, which greatly affects the service life of the first scraper 33.

[0119] Based on this, in this application, the second angle b between the first horizontal plane 3321 and the second cutting surface 3322 is set to be greater than or equal to 20° and less than or equal to 40°. For example, the first angle a can be 20°, 25°, 30°, 35°, 40°, etc., and is set according to actual conditions and is not specifically limited here. In this way, the second angle b between the first horizontal plane 3321 and the second cutting surface 3322 is set within a reasonable range to prevent the second angle b from being too large or too small. This can not only meet the cutting effect of the bending portion 332, but also reduce cutting resistance, increase the service life of the first scraper 33, and reduce maintenance costs.

[0120] In some embodiments of the present application, Figure 11As shown, the first scraper 33 is configured as an arc-shaped scraper. That is, the first scraper 33 extends along the radial direction of the first stirring shaft 31 as a whole toward the side wall of the stirring barrel 2, and the first scraper 33 can be configured as a horizontally arranged and bent arc-shaped strip structure. Furthermore, along the rotation direction of the first stirring shaft 31, the first scraper 33 has an inner arc surface and an outer arc surface that are oppositely arranged. Optionally, the curvature of the inner arc surface can be set to be greater than or equal to 10° and less than or equal to 25°, and the curvature of the outer arc surface can also be set to be greater than or equal to 10° and less than or equal to 25°. This configuration ensures that the curvature of the first scraper 33 is within a reasonable range, thereby avoiding both a reduced stiffness of the first scraper 33 due to an excessively large curvature and a reduced shear force of the first scraper 33 due to an excessively small curvature.

[0121] In some embodiments of the present application, Figure 4 、 Figure 6 、 Figure 9 、 Figure 11 、 Figure 12 and Figure 16 As shown, the stirring assembly 3 also includes a stirring column 34. The stirring portion 321 is provided with at least one mounting hole 3211. The stirring column 34 is fixedly mounted on the stirring portion 321 through the mounting hole 3211. Along the first direction X, both ends of the stirring column 34 extend out of the stirring portion 321 respectively.

[0122] Specifically, if Figure 11 As shown, the stirring paddle 32 includes six stirring parts 321, wherein some of the six stirring parts 321 are provided with at least one mounting hole 3211, or each of the six stirring parts 321 is provided with at least one mounting hole 3211. The specific setting is based on actual conditions and is not specifically limited here.

[0123] Further, if Figure 6 As shown, each mounting hole 3211 is fixedly mounted with a stirring column 34. Optionally, the stirring column 34 can be constructed as a cylinder or a prismatic shape, depending on the actual situation. When the first stirring shaft 31 rotates along its own axis, the stirring column 34 rotates along the first stirring shaft 31. The stirring column 34 can cooperate with the stirring paddle 32 to stir the material in the stirring space 21. At the same time, the stirring column 34 has a material breaking function. When larger block materials come into contact with the stirring column 34, the stirring column 34 can break the larger block materials into particles or powder through impact, thereby further improving the stirring effect of the stirring device 100.

[0124] As a specific example, continue to refer to Figure 11As shown, three of the six stirring parts 321 are respectively provided with a mounting hole 3211, and the other three stirring parts 321 are respectively provided with two mounting holes 3211, wherein the stirring parts 321 with two mounting holes 3211 and the stirring parts 321 with one mounting hole 3211 are alternately arranged at intervals, so that the dispersion effect of the stirred materials can be maximized.

[0125] It should be noted that in the present application, stirring parts 321 are extended from both ends of the stirring column 34 along the first direction X, so that the contact area between the stirring column 34 and the material to be stirred in the first direction X can be further increased. When the first stirring shaft 31 rotates along its own axis, the stirring column 34 can better stir the material in the main stirring zone, increase the fluidity of the material in the stirring space 21, and promote rapid mixing of the various components in the material.

[0126] In some embodiments of the present application, Figure 4 、 Figure 6 、 Figure 9 、 Figure 12 and Figure 16 As shown, the stirring assembly 3 also includes a guide cone 35, which is arranged in the stirring space 21. Along the first direction X, the guide cone 35 is fixedly connected to the first stirring shaft 31 and is concentrically arranged with the first stirring shaft 31. Along the first direction X, the guide cone 35 is arranged on the side of the stirring paddle 32 away from the first scraper 33.

[0127] Specifically, along the first direction X, the guide cone 35 is fixedly installed on the upper end of the first stirring shaft 31, and the height of the guide cone 35 is higher than the height of the stirring paddle 32. Furthermore, along the first direction X, the guide cone 35 is concentrically arranged with the first stirring shaft 31. With such an arrangement, when the first stirring shaft 31 rotates along its own axial direction, the guide cone 35 rotates along the axis of the first stirring shaft 31. When the material is poured into the stirring space 21 from the top of the stirring barrel 2 or the first scraper 33 throws the material deposited near the bottom wall 22 upward again, the guide cone 35 can guide and disperse the material, so that the material is guided and dispersed to the stirring area corresponding to the stirring paddle 32 or the first scraper 33.

[0128] In some embodiments of the present application, Figure 4-Figure 6 、 Figure 9 、 Figure 12 and Figure 16As shown, the stirring assembly 3 also includes a sleeve 36, which is fixed to the mounting bracket 1, and a portion of the first stirring shaft 31 is rotatably disposed in the sleeve 36. Along the radial direction of the first stirring shaft 31, the sleeve 36 is spaced apart from the first stirring shaft 31 and an air intake channel is formed. Along the first direction X, the sleeve 36 is passed through the stirring barrel 2 so that a portion of the sleeve 36 is disposed in the stirring space 21, wherein the air intake channel is communicated with the stirring space 21, and the sleeve 36 is provided with an air intake hole 361 communicated with the air intake channel.

[0129] Specifically, if Figure 4 As shown, part of the sleeve 36 extends into the stirring space 21, and part of the sleeve 36 is located outside the stirring barrel 2 and fixedly connected to the mounting bracket 1 below the stirring barrel 2. Furthermore, part of the first stirring shaft 31 is rotatably arranged in the sleeve 36 through the main shaft bearing 37, wherein, along the first direction X, one end of the first stirring shaft 31 extends upward into the stirring space 21, and the other end of the first stirring shaft 31 extends downward from the sleeve 36, and the end of the first stirring shaft 31 extending from the sleeve 36 is provided with a pulley protrusion 311, wherein the pulley protrusion 311 of the first stirring shaft 31 is transmission-connected to the output shaft of the first motor 12 through the belt 13. When the output shaft of the first motor 12 rotates, under the cooperation of the belt 13 and the pulley protrusion 311, the first stirring shaft 31 rotates along the axial direction of the first stirring shaft 31 relative to the main shaft bearing 37, thereby realizing the driving of the first stirring shaft 31, and the main shaft bearing 37 can improve the stability of the first stirring shaft 31 during rotation.

[0130] Furthermore, along the radial direction of the first stirring shaft 31, the sleeve 36 is separated from the first stirring shaft 31 and an air inlet channel is formed. The sleeve 36 is also provided with an air inlet hole 361 that passes through the side wall of the sleeve 36, so that the air inlet hole 361 is connected to the air inlet channel. It can be understood that since part of the sleeve 36 extends into the stirring space 21, one end of the first stirring shaft 31 extends upward into the stirring space 21, and along the radial direction of the first stirring shaft 31, the sleeve 36 is separated from the first stirring shaft 31 and an air inlet channel is formed. In this way, the air inlet channel is connected to the stirring space 21.

[0131] After a seal is set at the position where the first stirring shaft 31 extends out of the sleeve 36, if air is blown into the air inlet hole 361, the gas flowing into the air inlet hole 361 passes through the air inlet channel and enters the stirring space 21. With this arrangement, by continuously blowing air into the stirring space 21, material particles can be prevented from falling into the gap between the first stirring shaft 31 and the sleeve 36.

[0132] In some embodiments of the present application, an oil seal 38 is provided between the sleeve 36 and the first stirring shaft 31. Specifically, the oil seal 38 is arranged in the air intake channel formed by the sleeve 36 and the first stirring shaft 31, and the oil seal 38 will not block the air intake channel. In this way, the gas conveying function of the air intake channel is guaranteed, and a certain oil sealing effect of the oil seal 38 is guaranteed.

[0133] In some embodiments of the present application, Figure 4 and Figure 14 As shown, the stirring device 100 also includes: a honeycomb jacket 4, which is arranged in the side wall of the stirring barrel 2, and a heat exchange channel 41 is formed in the honeycomb jacket 4. The side wall of the stirring barrel 2 is also provided with a medium inlet and a medium outlet connected to the heat exchange channel 41.

[0134] Specifically, the side wall of the mixing barrel 2 includes an inner wall and an outer wall. Along the radial direction of the mixing barrel 2, the inner wall and the outer wall are spaced apart to form an installation space. The honeycomb jacket 4 is fixedly installed in the installation space. Further, referring to Figure 14 As shown, the honeycomb jacket 4 includes a jacket outer wall 42 and a jacket inner wall, and a heat exchange channel 41 is formed between the jacket outer wall 42 and the jacket inner wall, wherein the jacket outer wall 42 is fixedly connected to the outer wall of the mixing barrel 2, and the jacket inner wall is welded to the inner wall of the mixing barrel 2 through a jacket protrusion 43, and a jacket welding point 44 is formed on the jacket protrusion 43.

[0135] Furthermore, the side wall of the mixing barrel 2 is provided with a medium inlet and a medium outlet connected to the heat exchange flow channel 41. It can be understood that the honeycomb jacket 4 is provided with a first opening and a second opening connected to the heat exchange flow channel 41, wherein the first opening of the honeycomb jacket 4 is connected to the medium inlet through a connecting pipe, and the second opening of the honeycomb jacket 4 is connected to the medium outlet through a connecting pipe. With this arrangement, when it is necessary to cool the material in the stirring space 21, the refrigerant medium is transported to the heat exchange flow channel 41 of the honeycomb jacket 4 through the medium inlet of the mixing barrel 2. In this way, the refrigerant medium can pass through the honeycomb jacket 4 and The sidewalls of the mixing barrel 2 exchange heat with the material in the mixing space 21, and the refrigerant medium after heat exchange can be discharged through the medium outlet of the mixing barrel 2, thereby reducing the temperature of the material in the mixing space 21. Similarly, when the temperature of the material in the mixing space 21 needs to be increased, a heating medium is delivered to the heat exchange flow channel 41 of the honeycomb jacket 4 through the medium inlet of the mixing barrel 2. The heating medium can exchange heat with the material in the mixing space 21 through the honeycomb jacket 4 and the sidewalls of the mixing barrel 2. The heating medium after heat exchange can be discharged through the medium outlet of the mixing barrel 2, thereby increasing the temperature of the material in the mixing space 21. Therefore, by providing the honeycomb jacket 4, the temperature of the mixing material can be flexibly adjusted to meet different temperature requirements.

[0136] In some embodiments of the present application, Figures 1-4As shown, along the first direction X, the upper end of the mixing barrel 2 has a feed hole 23 connected to the mixing space 21, and the mixing device 100 also includes: a cover plate 5 and a first driving cylinder 6. Along the first direction X, the cover plate 5 is arranged opposite to the feed hole 23, and the first driving cylinder 6 is fixed to the mounting bracket 1. The first driving cylinder 6 is suitable for driving the cover plate 5 to move along the first direction X so that the cover plate 5 selectively opens or covers the feed hole 23.

[0137] It should be noted that the common cover lifting mechanisms currently include hydraulic lifting structure, mechanical chain lifting structure, electric screw lifting structure and worm gear lifting structure. Among them, the working principle of the hydraulic lifting structure is to drive the movement of the cover 5 through the pressure generated by the hydraulic system. Its advantages are that it can provide a large lifting force, smooth movement, and can accurately control the lifting height. Its disadvantages are that the system is relatively complex and the maintenance cost is high; the working principle of the mechanical chain lifting structure is to use the cooperation of the chain and the sprocket to achieve the lifting action. Its advantages are relatively simple structure and high reliability. The disadvantages are that the lifting speed is relatively slow and the noise is relatively loud; the working principle of the electric screw lifting structure is that the motor drives the screw to rotate, thereby driving the nut matched with it to achieve up and down movement. Its advantages are high precision, smooth operation and low noise. The disadvantage is that the load-bearing capacity is relatively small and it is only suitable for small equipment; the working principle of the worm gear lifting structure is to use the transmission characteristics of the worm gear to achieve the lifting of the cover 5. Its advantages are that it has a large transmission ratio and can provide a self-locking function to ensure that it will not fall by itself when the drive stops. The disadvantages are relatively low efficiency and large wear.

[0138] Therefore, how to improve the efficiency of the cover plate lifting mechanism, simplify the structure of the cover plate lifting mechanism, and improve the bearing capacity of the cover plate lifting mechanism has become a technical problem that needs to be solved urgently.

[0139] Based on this, the present application sets the cover plate lifting mechanism as the first driving cylinder 6, and the number of the first driving cylinder 6 can be multiple, refer to Figure 1As shown, a first driving cylinder 6 is provided on each side of the mixing barrel 2. Furthermore, the first driving cylinder 6 is fixedly mounted on the mounting bracket 1, and the fixing mounting method includes but is not limited to bolt connection. Along the first direction X, the cover plate 5 is arranged opposite to the feed hole 23 of the mixing barrel 2. Each first driving cylinder 6 has a first piston, wherein one end of the first piston is arranged in the first driving cylinder 6, and the other end of the first piston is fixedly connected to the cover plate 5. In the present application, by selectively supplying compressed air into the first driving cylinder 6, the first piston can be extended and retracted along the first direction X. Assuming that when the first driving cylinder 6 drives the first piston to extend, the first piston drives the cover plate 5 to move upward along the first direction X, so that the cover plate 5 opens the feed hole 23, thereby facilitating the addition of the mixing material. After the material is added, the cover plate 5 needs to cover the feed hole 23 to prevent the material from splashing out of the feed hole 23 during the mixing process. At this time, the first driving cylinder 6 drives the first piston to retract, so that the first piston drives the cover plate 5 to move downward along the first direction X and cover the feed hole 23.

[0140] It should be noted that the first driving cylinder 6 drives the first piston to move through compressed air to achieve the lifting or lowering of the cover 5. Compared with the traditional cover lifting mechanism, it has a quick response, high efficiency, and a relatively simple overall structure and low cost. At the same time, by setting multiple first driving cylinders 6 to drive the cover 5 to move, it is beneficial to improve the stability of the cover 5 during the lifting process.

[0141] In some embodiments of the present application, Figures 1-4 As shown, the stirring device 100 also includes: a mounting frame 7 and a guide column 8. The mounting frame 7 is fixed to the mounting bracket 1, and the fixed mounting method includes but is not limited to bolt connection. The first driving cylinder 6 is fixed to the mounting bracket 1, and the fixed mounting method includes but is not limited to bolt connection. Along the first direction X, the upper end of the guide column 8 is fixedly connected to the cover plate 5, and the mounting frame 7 is provided with a guide hole 71 that cooperates with the guide column 8. Along the first direction X, the guide column 8 is movable relative to the guide hole 71. Optionally, a linear bearing is provided in the guide hole 71, and the guide column 8 is assembled with the linear bearing guide.

[0142] As a specific example, Figure 1 As shown, along the second direction, a mounting frame 7 is respectively provided on both sides of the mixing barrel 2, and each mounting frame 7 is correspondingly provided with a first driving cylinder 6 and two guide columns 8. Along the third direction, the two guide columns 8 are respectively arranged on both sides of the first driving cylinder 6, wherein the first direction X, the second direction, and the third direction are perpendicular to each other, and the mounting frames 7 are respectively provided with guide holes 71 corresponding to the two guide columns 8. With such an arrangement, when the first driving cylinder 6 drives the cover plate 5 to move up and down, the guiding cooperation between the guide columns 8 and the guide holes 71 is conducive to improving the stability of the cover plate 5 during the lifting process.

[0143] In some embodiments of the present application, Figure 3 As shown, along the first direction X, the lower end of the guide column 8 is fixedly connected to the limiting member 9, and the stirring device 100 also includes a plug-in structure, which is also suitable for selectively plugging and cooperating with the limiting member 9 when the cover plate 5 opens the feed hole 23 to limit the movement of the limiting member 9 along the first direction X.

[0144] Specifically, the limit member 9 is arranged below the mounting frame 7, the guide column 8 passes through the mounting frame 7 and is fixedly connected to the limit member 9, the limit member 9 is provided with a limit hole 91, and the plug-in structure can be constructed as a third driving cylinder, the third driving cylinder has a third piston, and the third driving cylinder is used to drive the third piston to telescopic movement, and the size of the third piston matches the size of the limit hole 91. When the first driving cylinder 6 drives the cover plate 5 to move upward to a preset position to open the feed hole 23, the third driving cylinder drives the third piston to insert into the limit hole 91 of the limit member 9 to limit the cover plate 5 from moving along the first direction X through the limit member 9. Such a setting can prevent the cover plate 5 from falling when the first driving cylinder 6 fails, thereby improving the safety of the mixing assembly.

[0145] In some embodiments of the present application, Figure 16 As shown, the stirring device 100 also includes: a second stirring shaft 10 and at least one second scraper 11. The second stirring shaft 10 is rotatably provided on the cover plate 5 along the axial direction of the second stirring shaft 10. The axial direction of the second stirring shaft 10 is parallel to the first direction X. The second stirring shaft 10 is partially provided in the stirring space 21. The second scraper 11 is provided in the stirring space 21 and is fixedly connected to the outer peripheral wall of the second stirring shaft 10. Along the radial direction of the second stirring shaft 10, a scraping portion 111 is formed at the end of the second scraper 11 away from the second stirring shaft 10. The scraping portion 111 extends along the first direction X. The second stirring shaft 10 is suitable for driving the scraping portion 111 to clean the inner peripheral wall of the stirring barrel 2.

[0146] Specifically, in order to further improve the stirring function of the stirring device 100, the stirring device 100 is further provided with a second stirring shaft 10, wherein the second stirring shaft 10 is a rotatable shaft, the axial direction of the second stirring shaft 10 is parallel to the first direction X, and the second stirring shaft 10 is rotatable relative to the cover plate 5 along the axial direction of the second stirring shaft 10, as shown in FIG. Figure 16 As shown, a portion of the second stirring shaft 10 is located in the stirring space 21, and the other portion passes through the cover plate 5 to be connected to the output shaft of the second motor 14 above the cover plate 5. When the output shaft of the second motor 14 rotates, the second stirring shaft 10 rotates along the axial direction of the second stirring shaft 10 relative to the cover plate 5, thereby realizing the driving of the second stirring shaft 10.

[0147] Furthermore, the stirring device 100 is also provided with at least one second scraper 11, which is arranged in the stirring space 21 and fixedly connected to the outer peripheral wall of the second stirring shaft 10. In this way, when the second stirring shaft 10 rotates along the axial direction of the second stirring shaft 10, the second scraper 11 also rotates along the axial direction of the second stirring shaft 10 driven by the second stirring shaft 10.

[0148] Furthermore, along the radial direction of the second stirring shaft 10, a scraping portion 111 is formed at the end of the second scraper 11 away from the second stirring shaft 10, and the scraping portion 111 extends along the first direction X. It can be understood that the scraping portion 111 is in contact with the inner circumferential wall of the stirring barrel 2. When the second scraper 11 rotates along the axial direction of the second stirring shaft 10, the scraping portion 111 can clean the inner circumferential wall of the stirring barrel 2. With this arrangement, the material attached to the inner circumferential wall of the stirring barrel 2 can be scraped off so that it can re-participate in the material stirring, greatly reducing the stirring blind spot.

[0149] In some embodiments of the present application, Figure 1 、 Figure 15 and Figure 16 As shown, the mixing barrel 2 is also provided with a discharge hole 24, which is fixedly connected to the discharge pipe 15 through a connecting flange, and a discharge chamber 152 is formed in the discharge pipe 15. It can be understood that when the discharge hole 24 is not blocked, the discharge hole 24 is connected to the discharge chamber 152. Furthermore, in order to control the selective connection or disconnection of the discharge hole 24 and the discharge chamber 152, a sealing member 16 is also provided in the discharge chamber 152. The sealing member 16 is transmission-connected to the second driving cylinder 17 fixed on the discharge pipe 15. For example, the second driving cylinder 17 has a second piston, and the second driving cylinder 17 is fixedly connected to the sealing member 16 through the second piston. The second driving cylinder 17 drives the second piston to extend and retract to make the sealing member 16 move in the discharge chamber 152. When the sealing member 16 moves in the discharge chamber 152, the sealing member 16 can selectively block or open the discharge hole 24 of the mixing barrel 2. Furthermore, the discharge pipe 15 is also provided with a discharge hole 151 connected to the discharge chamber 152. With such a configuration, when it is necessary to discharge the material after mixing, the second driving cylinder 17 drives the sealing member 16 to open the discharge hole 24, so that the material after mixing can flow out from the discharge hole 151 of the discharge pipe 15. When the material is discharged, the second driving cylinder 17 drives the sealing member 16 to block the discharge hole 24 to prevent leakage during subsequent material mixing.

[0150] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0151] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0152] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

[0153] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A stirring device, characterized in that: include: Mounting bracket; A mixing barrel, the mixing barrel being fixed to the mounting bracket, and a mixing space being formed in the mixing barrel; A stirring assembly, the stirring assembly comprising a first stirring shaft and a stirring paddle, the first stirring shaft being rotatably disposed on the mounting bracket along the axial direction of the first stirring shaft, the axial direction of the first stirring shaft being parallel to a first direction, the first stirring shaft being partially disposed in the stirring space, the stirring paddle being disposed in the stirring space and fixedly connected to the first stirring shaft, the stirring paddle comprising a plurality of stirring portions, each of the stirring portions extending in a direction close to the stirring barrel along a radial direction of the first stirring shaft, and the plurality of stirring portions being sequentially spaced apart along the circumference of the first stirring shaft; The stirring assembly further includes a stirring column, the stirring portion is provided with at least one mounting hole, the stirring column is fixedly mounted on the stirring portion through the mounting hole, and along the first direction, both ends of the stirring column extend out of the stirring portion respectively; The stirring assembly further includes a first scraper, the first scraper being disposed in the stirring space and fixedly connected to the outer peripheral wall of the first stirring shaft. Along the radial direction of the first stirring shaft, the first scraper as a whole extends in a direction close to the stirring barrel. Along the first direction, the first scraper is spaced apart from the stirring paddle. The first scraper is closer to the bottom wall of the stirring barrel than the stirring paddle, and along the first direction, the first scraper is spaced apart from the bottom wall of the stirring barrel. The first scraper includes a scraper body and a bent portion, the scraper body is fixedly connected to the outer peripheral wall of the first stirring shaft, and along the radial direction of the first stirring shaft, the scraper body extends toward the stirring barrel, and the end of the scraper body away from the first stirring shaft is connected to the bent portion, along the radial direction of the first stirring shaft, the bent portion is provided between the scraper body and the stirring barrel, and along the first direction, the bent portion is provided on the side of the scraper body away from the bottom wall of the stirring barrel; The scraper body has a first cutting surface, which is inclined toward the bottom wall of the mixing barrel along the rotation direction of the first stirring shaft. The bent portion has a first horizontal surface and a second cutting surface connected to each other, which is inclined toward the bottom wall of the mixing barrel along the rotation direction of the first stirring shaft. A second angle b is formed between the first horizontal surface and the second cutting surface, satisfying the relationship: 20°≤b≤40°.

2. The stirring device according to claim 1, characterized in that Along the first direction, the spacing distance between the first scraper and the bottom wall of the mixing barrel is d, which satisfies the relationship: 2mm≤d≤5mm.

3. The stirring device according to claim 1, characterized in that There are a plurality of first scrapers, and the plurality of first scrapers are sequentially spaced apart along the circumference of the first stirring shaft.

4. The stirring device according to claim 1, characterized in that A first angle a is formed between the scraper body and the bent portion, satisfying the relationship: 120°≤a≤160°.

5. The stirring device according to claim 1, characterized in that The first scraper is configured as an arc-shaped scraper.

6. The stirring device according to claim 1, characterized in that The stirring assembly further includes a guide cone, which is arranged in the stirring space and is fixedly connected to the first stirring shaft along the first direction and is concentrically arranged with the first stirring shaft; Along the first direction, the guide cone is arranged on a side of the stirring paddle away from the first scraper.

7. The stirring device according to claim 1, characterized in that The stirring assembly further includes a shaft sleeve, the shaft sleeve being fixedly mounted on the mounting bracket, a portion of the first stirring shaft being rotatably mounted in the shaft sleeve, and the shaft sleeve being spaced apart from the first stirring shaft along a radial direction of the first stirring shaft and forming an air inlet passage; Along the first direction, the sleeve is inserted into the mixing barrel so that part of the sleeve is arranged in the mixing space, wherein the air inlet channel is connected to the mixing space, and the sleeve is provided with an air inlet hole connected to the air inlet channel.

8. The stirring device according to claim 1, characterized in that The stirring device further comprises a honeycomb jacket, which is arranged in the side wall of the stirring barrel, a heat exchange channel is formed in the honeycomb jacket, and the side wall of the stirring barrel is further provided with a medium inlet and a medium outlet connected to the heat exchange channel.

9. The stirring device according to any one of claims 1 to 8, characterized in that Along the first direction, the upper end of the stirring barrel has a feeding hole connected to the stirring space; The stirring device also includes: a cover plate and a first driving cylinder. Along the first direction, the cover plate is arranged opposite to the feed hole. The first driving cylinder is fixed to the mounting bracket. The first driving cylinder is suitable for driving the cover plate to move along the first direction so that the cover plate selectively opens or closes the feed hole.

10. The stirring device according to claim 9, characterized in that The stirring device also includes: a mounting frame and a guide column, the mounting frame is fixed to the mounting bracket, the first driving cylinder is fixed to the mounting bracket, along the first direction, the upper end of the guide column is fixedly connected to the cover plate, the mounting frame is provided with a guide hole that cooperates with the guide column, and along the first direction, the guide column is movable relative to the guide hole.

11. The stirring device according to claim 10, characterized in that Along the first direction, the lower end of the guide column is fixedly connected to a limiting member, and the stirring device also includes a plug-in structure, which is also suitable for selectively plugging and cooperating with the limiting member when the cover plate opens the feed hole to limit the movement of the limiting member along the first direction.

12. The stirring device according to claim 9, characterized in that The stirring device also includes: a second stirring shaft and at least one second scraper, the second stirring shaft is rotatably provided on the cover plate along the axial direction of the second stirring shaft, the axial direction of the second stirring shaft is parallel to the first direction, the second stirring shaft is partially provided in the stirring space, the second scraper is provided in the stirring space and is fixedly connected to the outer peripheral wall of the second stirring shaft, and a scraping portion is formed at the end of the second scraper away from the second stirring shaft along the radial direction of the second stirring shaft, the scraping portion extends along the first direction, and the second stirring shaft is suitable for driving the scraping portion to clean the inner peripheral wall of the stirring barrel.

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