Stirring device

Abstract

The invention relates to the technical field of mixing and stirring, and discloses a stirring device which comprises a mounting bracket, a stirring barrel and a stirring assembly, the stirring barrel is fixedly arranged 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 arranged on the mounting bracket, and the stirring paddle is rotatably arranged on the mounting bracket. The first stirring shaft is partially arranged in the stirring space, the stirring paddle is arranged in the stirring space and fixedly connected with the first stirring shaft, the stirring paddle comprises a plurality of stirring parts, the stirring assembly further comprises a first scraper, the first scraper is arranged in the stirring space and fixedly connected with the peripheral wall of the first stirring shaft, and the first scraper is arranged in the stirring space and fixedly connected with the peripheral wall of the first stirring shaft in the radial direction of the first stirring shaft. The first scraper integrally extends towards the direction close to the stirring barrel, the first scraper is separated from the stirring paddle in the first direction, and the first scraper is separated from the bottom wall of the stirring barrel in the first direction. Therefore, through cooperative use of the stirring paddle and the first scraper, the stirring performance of the stirring device is improved.

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 manufacture electrodes. Generally speaking, for wet stirring, components such as active materials, conductive carbon black, dispersants, and solvents need to be added to a stirring device in a certain proportion and sequence, and a stable fixed suspension is formed through the 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 electrodes manufactured by the wet stirring method have a low energy density and are difficult to meet the usage 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 electrodes and being beneficial to improving the energy density of the electrodes.

[0004] However, dry stirring has high requirements for the stirring performance of the stirring device. Currently, during the dry stirring process of the stirring equipment, problems such as the deformation of the stirring paddle and scraping of the wall are likely to occur, and in some cases, the stirring paddle may even be unable to stir. Therefore, how to improve the stirring performance of the stirring device so that it can be better applied to the dry stirring production of electrodes is a technical problem that needs to be solved urgently today. Summary of the Invention

[0005] The present application provides a stirring device, and the stirring performance of the stirring device is improved by the combined use of a stirring paddle and a first scraper.

[0006] To achieve the above object, the main technical solutions adopted in the present application include: In a first aspect, an embodiment of the present application provides a stirring device, including: An installation bracket; A stirring barrel, the stirring barrel is fixedly arranged on the installation bracket, and a stirring space is formed inside the stirring barrel; A stirring assembly, the stirring assembly includes a first stirring shaft and a stirring paddle. The first stirring shaft is rotatably arranged on the installation bracket along the axial direction of the first stirring shaft. The axial direction of the first stirring shaft is parallel to the first direction. A part of the first stirring shaft is arranged inside the stirring space. The stirring paddle is arranged inside the stirring space and is fixedly connected to the first stirring shaft. The stirring paddle includes a plurality of stirring parts. Along the radial direction of the first stirring shaft, each stirring part extends towards the direction close to the stirring barrel, and the plurality of stirring parts are arranged at intervals in sequence along the circumferential direction of the first stirring shaft; Among them, the stirring assembly further includes a first scraper blade, which is 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 blade extends as a whole towards the direction close to the stirring barrel. Along the first direction, the first scraper blade is spaced apart from the stirring paddle, the first scraper blade is closer to the bottom wall of the stirring barrel than the stirring paddle, and along the first direction, the first scraper blade is spaced apart from the bottom wall of the stirring barrel.

[0007] For the stirring device according to the embodiment of the first aspect of the present application, when the first stirring shaft rotates, the stirring paddle and the first scraper blade can stir the materials in the stirring space simultaneously. Among them, the stirring paddle forms a main stirring area, and the first scraper blade stirring the materials close to the bottom wall of the stirring barrel can generate local turbulence, thereby forming an auxiliary disturbance area. Thus, when the stirring paddle and the first scraper blade are used in combination, the main stirring area and the auxiliary disturbance area can form a composite flow field under the superposition effect, which is beneficial to enhancing the circumferential movement of the materials 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, during the process of the stirring paddle stirring the materials, the resistance and shear force it receives will also correspondingly decrease, thereby avoiding defects such as deformation and wall scraping of the stirring paddle.

[0008] Optionally, along the first direction, the spacing distance between the first scraper blade and the bottom wall of the stirring barrel is d, satisfying the relational expression: 2mm ≤ d ≤ 5mm.

[0009] Optionally, there are multiple first scraper blades, and the multiple first scraper blades are arranged at intervals in sequence along the circumferential direction of the first stirring shaft.

[0010] Optionally, the first scraper blade includes a scraper body and a bending portion. The scraper body is fixedly connected to the outer peripheral wall of the first stirring shaft. Along the radial direction of the first stirring shaft, the scraper body extends towards the direction close to the stirring barrel, and the end of the scraper body away from the first stirring shaft is connected to the bending portion; Along the radial direction of the first stirring shaft, the bending portion is disposed between the scraper body and the stirring barrel, and along the first direction, the bending portion is disposed on the side of the scraper body away from the bottom wall of the stirring barrel.

[0011] Optionally, a first included angle a is formed between the scraper body and the bending portion, satisfying the relational expression: 120° ≤ a ≤ 160°.

[0012] 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 towards the direction close to the bottom wall of the stirring barrel.

[0013] Optionally, the bending portion has a first horizontal surface and a second cutting surface connected to each other. Along the rotation direction of the first stirring shaft, the second cutting surface is inclined towards the direction close to the bottom wall of the stirring barrel, and a second included angle b is formed between the first horizontal surface and the second cutting surface, satisfying the relational expression: 20° ≤ b ≤ 40°.

[0014] Optionally, the first squeegee is configured as an arc squeegee.

[0015] Optionally, the stirring assembly further includes a stirring column. The stirring part is provided with at least one mounting hole. The stirring column is fixedly mounted on the stirring part through the mounting hole, and along the first direction, both ends of the stirring column extend out of the stirring part respectively.

[0016] Optionally, the stirring assembly further includes a flow guiding cone. The flow guiding cone is arranged in the stirring space. Along the first direction, the flow guiding cone is fixedly connected to the first stirring shaft and is concentric with the first stirring shaft; Along the first direction, the flow guiding cone is arranged on the side of the stirring paddle away from the first squeegee.

[0017] Optionally, the stirring assembly further includes a bushing. The bushing is fixedly arranged on the mounting bracket. A part of the first stirring shaft is rotatably arranged in the bushing. Along the radial direction of the first stirring shaft, the bushing is spaced apart from the first stirring shaft and forms an air inlet channel; Along the first direction, the bushing penetrates through the stirring barrel so that a part of the bushing is arranged in the stirring space. Wherein, the air inlet channel is communicated with the stirring space, and the bushing is provided with an air inlet hole communicated with the air inlet channel.

[0018] Optionally, the stirring device further includes: a honeycomb jacket. The honeycomb jacket is arranged in the side wall of the stirring barrel. A heat exchange flow channel is formed in the honeycomb jacket. The side wall of the stirring barrel is further provided with a medium inlet and a medium outlet communicated with the heat exchange flow channel.

[0019] Optionally, along the first direction, the upper end of the stirring barrel has a feed hole communicated with the stirring space; The stirring device further 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 fixedly arranged on the mounting bracket. The first driving cylinder is adapted to drive the cover plate to move along the first direction so that the cover plate selectively opens or seals the feed hole.

[0020] Optionally, the stirring device further includes: a mounting frame and a guiding column. The mounting frame is fixedly arranged on the mounting bracket. The first driving cylinder is fixedly arranged on the mounting bracket. Along the first direction, the upper end of the guiding column is fixedly connected to the cover plate. The mounting frame is provided with a guiding hole for guiding and cooperating with the guiding column. Along the first direction, the guiding column is movable relative to the guiding hole.

[0021] Optionally, along the first direction, a limiting member is fixedly connected to the lower end of the guiding column. The stirring device further includes a plugging structure. The plugging structure is also adapted to selectively plug and cooperate with the limiting member when the cover plate opens the feed hole to limit the movement of the limiting member along the first direction.

[0022] Optionally, the stirring device further includes: a second stirring shaft and at least one second scraping blade. The second stirring shaft is rotatably arranged 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. A part of the second stirring shaft is arranged in the stirring space. The second scraping blade is arranged in the stirring space and fixedly connected to the outer peripheral wall of the second stirring shaft. Along the radial direction of the second stirring shaft, a scraping part is formed at the end of the second scraping blade away from the second stirring shaft. The scraping part extends along the first direction. The second stirring shaft is adapted to drive the scraping part to clean the inner peripheral wall of the stirring barrel. Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the stirring device provided by the first embodiment of the present application; Figure 2 Schematic diagram of the stirring device provided by the second embodiment of the present application; Figure 3 Schematic diagram of the stirring device provided by the third embodiment of the present application; Figure 4 is Figure 3 Cross-sectional view taken along line A-A in; Figure 5 is Figure 4 Local enlarged view at B in; Figure 6 Stereogram of the stirring assembly provided by an embodiment of the present application; Figure 7 is Figure 6 Local enlarged view at C in; Figure 8 Schematic diagram of the included angle between the first horizontal plane and the second cutting plane provided by an embodiment of the present application; Figure 9 First perspective view of the stirring assembly provided by an embodiment of the present application; Figure 10 is Figure 9 Local enlarged view at D in; Figure 11 Top view of the stirring assembly provided by an embodiment of the present application; Figure 12 Second perspective view of the stirring assembly provided by an embodiment of the present application; Figure 13Schematic diagram of the stirring device provided by the fourth embodiment of the present application; Figure 14 Schematic diagram of the honeycomb jacket provided by one embodiment of the present application; Figure 15 Schematic diagram of the stirring device provided by the fifth embodiment of the present application; Figure 16 Cross-sectional view of the stirring device provided by the sixth embodiment of the present application.

[0025]

Description of the reference numerals

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field 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 drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0028] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment when it appears in various places in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0029] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. 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 represents an "or" relationship between the associated objects before and after.

[0031] The term "plurality" as used in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0032] It should be noted that in the lithium battery manufacturing process, wet mixing is usually used to make electrodes. Generally speaking, in wet mixing, components such as active materials, conductive carbon black, dispersants, and solvents need to be added to the mixing device in a certain proportion and order, and a stable fixed suspension is formed through the mixing of the mixing device.

[0033] 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 made by the wet mixing method is relatively low and it is difficult to meet the usage requirements. Therefore, dry mixing has gradually come into people's view. Dry mixing does not require the use of solvents, thus avoiding the use and recycling of solvents and reducing the energy consumption of electrode production. At the same time, the electrodes made by dry mixing can make the active substances and conductive carbon black contact more closely, thereby improving the compaction density of the electrodes and being beneficial to increasing the energy density of the electrodes.

[0034] However, dry mixing has relatively high requirements for the mixing performance of the mixing device. Currently, during the dry mixing process of the mixing equipment, problems such as the deformation of the mixing paddle and scraping the wall are prone to occur, and even the situation where the mixing paddle cannot stir may appear. Therefore, how to improve the mixing performance of the mixing device so that it can be better applied to the dry mixing production of electrodes is a technical problem that urgently needs to be solved today.

[0035] Based on this, the present application proposes a mixing device 100. When the first mixing shaft 31 rotates, the mixing paddle 32 and the first scraper 33 can simultaneously mix the materials in the mixing space 21. Among them, the mixing paddle 32 forms a main mixing area, and when the first scraper 33 mixes the materials close to the bottom wall 22 of the mixing barrel 2, local turbulence can be generated, thereby forming an auxiliary disturbance area. In this way, when the mixing paddle 32 and the first scraper 33 are used in combination, the main mixing area and the auxiliary disturbance area can form a composite flow field under the superposition effect, which is beneficial to enhancing the circumferential movement of the materials in the mixing space 21, thereby improving the mixing effect of the mixing device 100. At the same time, under the action of the composite flow field, during the process of the mixing paddle 32 mixing the materials, the resistance and shear force it receives will also correspondingly decrease, thereby avoiding defects such as the deformation of the mixing paddle 32 and scraping the wall.

[0036] The following describes the mixing device 100 proposed in the embodiments of the present application with reference to the drawings.

[0037] As Figures 1 - 16 shown, the mixing device 100 according to the first aspect embodiment of the present application includes: a mounting bracket 1, a mixing barrel 2, and a mixing assembly 3.

[0038] Among them, the stirring barrel 2 is fixedly arranged on the mounting bracket 1. A stirring space 21 is formed inside the stirring barrel 2. The stirring assembly 3 includes a first stirring shaft 31 and stirring paddles 32. The first stirring shaft 31 is rotatably arranged on the mounting bracket 1 along the axial direction of the first stirring shaft 31. The axial direction of the first stirring shaft 31 is parallel to the first direction X. A part of the first stirring shaft 31 is arranged inside the stirring space 21. The stirring paddles 32 are arranged inside the stirring space 21 and fixedly connected to the first stirring shaft 31. The stirring paddles 32 include a plurality of stirring parts 321. Along the radial direction of the first stirring shaft 31, each stirring part 321 extends towards the direction close to the stirring barrel 2, and the plurality of stirring parts 321 are arranged at intervals in sequence along the circumferential direction of the first stirring shaft 31. Among them, the stirring assembly 3 further includes a first scraper 33. The first scraper 33 is arranged inside the stirring space 21 and 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 towards the direction close to the stirring barrel 2. Along the first direction X, the first scraper 33 is spaced apart from the stirring paddles 32. The first scraper 33 is closer to the bottom wall 22 of the stirring barrel 2 than the stirring paddles 32, and along the first direction X, the first scraper 33 is spaced apart from the bottom wall 22 of the stirring barrel 2.

[0039] Specifically, taking Figure 4 the placement direction of the stirring device 100 as an example for illustration, the mounting bracket 1 has a horizontal mounting platform. The stirring barrel 2 is integrally cylindrical and extends along the first direction X (up and down direction). The mounting platform is located directly below the stirring barrel 2. The stirring barrel 2 is fixedly installed on the mounting platform of the mounting bracket 1. The fixed installation methods include but are not limited to bolt connection, welding, etc.

[0040] Furthermore, a stirring space 21 is formed inside the stirring barrel 2. The stirring space 21 matches the size and shape of the stirring barrel 2. For example, the stirring space 21 is integrally cylindrical and extends along the first direction X (up and down direction). Among them, bulk materials to be stirred are pre-stored inside the stirring space 21.

[0041] To achieve the stirring function of the stirring device 100, the stirring device 100 is further provided with a stirring assembly 3. Among them, 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, as Figure 4 shown, a part of the first stirring shaft 31 is located inside the stirring space 21, and the other part 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.

[0042] In some embodiments of the present application, the first stirring shaft 31 is driven by a first motor 12. Refer to Figure 6 、 Figure 9 and Figure 12As 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, and 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, under the cooperation of the belt 13 and the pulley protrusion 311, the first stirring shaft 31 rotates along its own axial direction relative to the mounting bracket 1, thereby realizing the driving of the first stirring shaft 31.

[0043] In some embodiments of the present application, the first stirring shaft 31 can be directly rotatably connected to the mounting bracket 1, or can be rotatably connected to the mounting bracket 1 through other components. The specific setting is based on actual needs and is not specifically limited here.

[0044] Furthermore, if Figure 4 As shown, the stirring assembly 3 also includes a stirring paddle 32, which is disposed in the stirring space 21, and the stirring paddle 32 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 portion of the outer peripheral wall of the first stirring shaft 31 located in the stirring space 21, so that when the first stirring shaft 31 rotates along the axial direction of the first stirring shaft 31, the stirring paddle 32 is also driven by the first stirring shaft 31 to rotate along the axial direction of the first stirring shaft 31. As a specific example, Figure 4 , Figure 6 and Figure 11 As 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 circumferential direction 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, and 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 be stirred, so as to stir and break the block material into particles or powder.

[0045] 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, etc., and the stirring paddle 32 may even fail to stir.

[0046] 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. Figure 4As shown, the first scraper 33 is disposed in the stirring space 21 and 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 as a whole towards the side wall of the stirring barrel 2. As Figure 6 shown, the first scraper 33 can be constructed as a strip as a whole. It can be understood that, in order to ensure the normal rotation of the first scraper 33, there is a certain gap between the first scraper 33 and the side wall of the stirring barrel 2 along the radial direction of the first stirring shaft 31.

[0047] Furthermore, along the first direction X, the first scraper 33 is spaced apart from both the stirring paddle 32 and the bottom wall 22 of the stirring barrel 2, and the first scraper 33 is disposed between the stirring paddle 32 and the bottom wall 22 of the stirring barrel 2. Thus, the first scraper 33 rotates along the axial direction of the first stirring shaft 31 driven by the first stirring shaft 31. And since 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 area. According to the principle of fluid mechanics, the superposition of the main stirring area and the auxiliary disturbance area can form a composite flow field with stronger stirring ability, which is beneficial to enhancing the circumferential movement of the material in the stirring space 21, and further beneficial to improving the stirring effect of the stirring device 100. At the same time, under the action of the composite flow field, during the process of the stirring paddle 32 stirring the material, the resistance and shear force it receives will also be correspondingly reduced, thus avoiding defects such as deformation and wall scraping of the stirring paddle 32.

[0048] In some embodiments of the present application, by using the stirring paddle 32 and the first scraper 33 in cooperation, the stirring assembly 3 as a whole realizes an up-stirring and down-scraping working mode in the stirring space 21. Among them, the dimension of the first scraper 33 along the radial direction of the first stirring shaft 31 is larger than the dimension of the stirring paddle 32 along the radial direction of the first stirring shaft 31. For example, as Figure 4 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. Thus, the first scraper 33 can apply a greater shear force to the material during rotation, which is beneficial to further reducing the resistance encountered by the stirring paddle 32 when processing the material, and further improving the stirring efficiency of the stirring device 100.

[0049] It can be understood that the stirring assembly 3 with high shear force can fully break and disperse the conductive material aggregates, thereby realizing the microscopic mixing of the materials. At the same time, the cooperation of the stirring paddle 32 and the first scraper 33 can also enable the materials to move in multi-dimensional directions, so as to quickly and evenly mix various materials, effectively avoiding dead corners or retention phenomena. With such a setting, when processing materials with different particle sizes and large specific gravity differences, the stirring assembly 3 in the present application can effectively avoid problems such as stratification or agglomeration.

[0050] To summarize, according to the stirring device 100 proposed in the first aspect embodiment 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 of the material will also be reduced accordingly, thereby avoiding defects such as deformation and wall scraping of the stirring paddle 32.

[0051] 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: 2mm≤d≤5mm.

[0052] 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 not be able to rotate due to the 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.

[0053] Based on this, in the present application, the spacing distance 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 distance 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., which is set according to the actual situation and is not specifically limited here. In this way, the spacing distance between the first scraper 33 and the bottom wall 22 of the mixing barrel 2 is set within a reasonable range, which can not only meet the normal rotation of the first scraper 33, but also can better cut the bulk material and improve the cutting efficiency.

[0054] Furthermore, in dry stirring, a material deposition area is more likely to form near the bottom wall 22 of the stirring barrel 2. By designing the first scraper 33 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 materials deposited near the bottom wall 22 and throw them upward from bottom to top, so that the materials near the bottom wall 22 can re-enter the main stirring area of the stirring paddle 32, avoiding the formation of a stirring blind area in the stirring device 100. At the same time, a material stirring cycle can also be formed. For example, the materials in the stirring space 21 can be cyclically stirred from bottom to top or from top to bottom. In this way, through the cyclic stirring of the materials, the stirring effect on the materials can be further improved.

[0055] In some embodiments of the present application, as Figure 11 shown, there are multiple first scrapers 33, which are arranged at intervals in sequence along the circumferential direction of the first stirring shaft 31.

[0056] That is to say, multiple first scrapers 33 can be provided on the stirring assembly 3, and the multiple first scrapers 33 are arranged at intervals in sequence along the circumferential direction of the first stirring shaft 31. For example, the number of the first scrapers 33 can be 2, 3, 4, 5, which is specifically set according to the actual situation and is not specifically limited here.

[0057] It can be understood that each first scraper 33 is arranged in the stirring space 21 and 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 integrally towards the direction close to the stirring barrel 2. Furthermore, as a specific example, as Figure 11 shown, the stirring assembly 3 is provided with two first scrapers 33, and the two first scrapers 33 are arranged at intervals along the circumferential direction of the first stirring shaft 31. In this way, when the first stirring shaft 31 rotates, both of the two first scrapers 33 can stir the materials to be stirred near the bottom wall 22 of the stirring barrel 2, which is beneficial to further enhancing 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 materials, so it is more suitable for the situation with a large shear force in dry stirring and improves the dry stirring efficiency of the stirring device 100. In some embodiments of the present application, as 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 disposed between the scraper body 331 and the stirring barrel 2, and along the first direction X, the bending portion 332 is disposed on the side of the scraper body 331 away from the bottom wall 22 of the stirring barrel 2.

[0058] Specifically, in combination with Figure 7 and Figure 11 As shown, the first scraper 33 is composed of a mutually connected scraper body 331 and a bending portion 332. Among them, the scraper body 331 extends integrally toward the side wall direction of the stirring barrel 2 along the radial direction of the first stirring shaft 31. For example, the scraper body 331 can be configured as a horizontal strip structure, or can be configured as a horizontally arranged and bent arc-shaped strip structure, or can also be configured as a horizontally arranged and serpentine-bent strip structure. The specific shape of the scraper body 331 is not limited here.

[0059] Further, 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 bending portion 332. Among them, along the first direction X, the bending portion 332 is integrally arranged above the scraper body 331. Along the radial direction of the first stirring shaft 31, the bending portion 332 is disposed between the scraper body 331 and the stirring barrel 2. It should be noted that, as Figure 7 shown, in order to ensure the normal rotation of the first scraper 33, the bending portion 332 has a certain gap with the side wall of the stirring barrel 2 along the radial direction of the first stirring shaft 31. Further, in order to facilitate the production and manufacture of the first scraper 33, an arc-shaped connection surface is formed at the connection between the scraper body 331 and the bending portion 332.

[0060] When the first stirring shaft 31 rotates, the bending portion 332 of the first scraper 33 acts as a diversion portion, which is more conducive to the first scraper 33 throwing the materials 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. In this way, a better material stirring cycle can be formed, and it is also beneficial to further improve the stirring effect on the materials.

[0061] In some embodiments of the present application, a first included angle a is formed between the scraper body 331 and the bending portion 332, satisfying the relational expression: 120° ≤ a ≤ 160°.

[0062] Specifically, with the first scraper 33 in accordance with Figure 9Taking the placement direction as an example for illustration, the entire scraping blade body 331 is horizontally arranged. Along the radial direction of the first stirring shaft 31, the bending portion 332 bends and extends obliquely upward away from the scraping blade body 331. Continuing to refer to Figure 10 As shown, a first included angle a is formed between the scraping blade body 331 and the bending portion 332. It can be understood that a virtual connection surface is formed between the inner end of the bending portion 332 and the connection portion between the scraping blade body 331 and the bending portion 332. Among them, the first included angle a is an obtuse angle formed by the virtual connection surface and the horizontal plane.

[0063] It should be noted that the first included angle a formed between the scraping blade body 331 and the bending portion 332 needs to be set within a reasonable range. If the first included angle a is too small, it is not conducive to the bending production of the bending portion 332. If the first included angle a is too large, the effect of guiding the material upward by the bending portion 332 is poor, which is not conducive to forming a complete up-and-down stirring cycle.

[0064] Based on this, in this application, the first included angle a between the scraping blade body 331 and the bending portion 332 is set to be greater than or equal to 120° and less than or equal to 160°. For example, the first included angle a can be 120°, 125°, 130°, 140°, 150°, 160°, etc., and it is specifically set according to the actual situation, and no specific limitation is made here. In this way, the first included angle a formed between the scraping blade body 331 and the bending portion 332 is set within a reasonable range, preventing the first included angle a from being too large or too small. In this way, it is not only convenient for the production of the bending portion 332 of the first scraping blade 33, but also can improve the material guiding effect, thereby improving the stirring effect of the stirring device 100.

[0065] In some embodiments of this application, as Figure 7 shown, the scraping blade body 331 has a first cutting surface 3311. 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.

[0066] 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. Among them, the rotation direction of the first stirring shaft 31 can be clockwise rotation along its own axial direction or counterclockwise rotation along its own axial direction.

[0067] Further, in order to improve the cutting performance of the blade body 331, the first cutting surface 3311 is inclined towards the direction close to the bottom wall 22 of the stirring 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, along the clockwise rotation direction of the first stirring shaft 31, the first cutting surface 3311 is inclined towards the direction close to the bottom wall 22 of the stirring barrel 2, that is, along the clockwise rotation direction of the first stirring shaft 31, the thickness of the first cutting surface 3311 gradually decreases. With such a setting, when the first stirring shaft 31 rotates clockwise along its own axis, the blade body 331 can improve the shearing force of the blade body 331 by setting the inclined first cutting surface 3311, so as to better cut the material in front of the rotation direction of the blade body 331, which is more conducive to cutting large pieces of material into small pieces, and further conducive to improving the stirring effect of the stirring device 100.

[0068] Similarly, when the rotation direction of the first stirring shaft 31 is counterclockwise along its own axis, along the counterclockwise rotation direction of the first stirring shaft 31, the first cutting surface 3311 is inclined towards the direction close to the bottom wall 22 of the stirring barrel 2, that is, along the counterclockwise rotation direction of the first stirring shaft 31, the thickness of the first cutting surface 3311 gradually decreases. Such a design can also improve the shearing force of the blade body 331, which will not be elaborated here.

[0069] In some embodiments of the present application, as Figure 7 and Figure 8 shown, the bent portion 332 has a first horizontal plane 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 towards the direction close to the bottom wall 22 of the stirring barrel 2. A second included angle b is formed between the first horizontal plane 3321 and the second cutting surface 3322, and satisfies the relational expression: 20° ≤ b ≤ 40°.

[0070] Specifically, the rotation direction of the first stirring shaft 31 can be clockwise along its own axis or counterclockwise along its own axis.

[0071] Further, the bent portion 332 is provided with a first horizontal plane 3321 and a second cutting surface 3322 connected to each other. It can be understood that, taking the first blade 33 according to Figure 9Taking the placement direction as an example for illustration, the first horizontal plane 3321 is in a horizontal state. To improve the cutting performance of the bending part 332, along the rotation direction of the first stirring shaft 31, the second cutting surface 3322 is inclined towards the direction close to the bottom wall 22 of the stirring barrel 2. For example, when the rotation direction of the first stirring shaft 31 is clockwise rotation along its own axial direction, along the clockwise rotation direction of the first stirring shaft 31, the second cutting surface 3322 is inclined towards the direction close to the bottom wall 22 of the stirring barrel 2, 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 rotation along its own axial direction, along the counterclockwise rotation direction of the first stirring shaft 31, the second cutting surface 3322 is inclined towards the direction close to the bottom wall 22 of the stirring barrel 2, that is, along the counterclockwise rotation direction of the first stirring shaft 31, the thickness of the second cutting surface 3322 gradually decreases.

[0072] Reference Figure 8 As shown, a second included angle b is formed between the first horizontal plane 3321 and the second cutting surface 3322. It can be understood that the second included angle b is the acute angle formed between the first horizontal plane 3321 and the second cutting surface 3322.

[0073] It should be noted that the second included angle b formed between the first horizontal plane 3321 and the second cutting surface 3322 needs to be set within a reasonable range. If the second included angle b is too small, the cutting effect of the bending part 332 is poor, which is not conducive to the stirring of the stirring device 100. If the second included angle b is too large, the material resistance received by the bending part 332 is large, and the bending part 332 is worn more seriously, which greatly affects the service life of the first scraper 33.

[0074] Based on this, in this application, the second included 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 included angle a can be 20°, 25°, 30°, 35°, 40°, etc., which is specifically set according to the actual situation and is not specifically limited here. In this way, the second included angle b between the first horizontal plane 3321 and the second cutting surface 3322 is set within a reasonable range, preventing the second included angle b from being too large or too small. In this way, it can not only meet the cutting effect of the bending part 332, but also reduce the cutting resistance, improve the service life of the first scraper 33, and reduce the maintenance cost.

[0075] In some embodiments of this application, such as Figure 11As shown, the first scraper 33 is configured as an arc-shaped scraper. That is to say, the first scraper 33 extends integrally in the radial direction of the first stirring shaft 31 towards 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. Further, along the rotation direction of the first stirring shaft 31, the first scraper 33 has an inner arc surface and an outer arc surface arranged oppositely. Optionally, the radian 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 radian of the outer arc surface can also be set to be greater than or equal to 10° and less than or equal to 25°. Such a setting makes the bending radian of the first scraper 33 within a reasonable range, thereby avoiding the small stiffness of the first scraper 33 caused by too large an arc and also avoiding the reduction of the shearing force of the first scraper 33 caused by too small an arc.

[0076] In some embodiments of the present application, such as Figure 4 , Figure 6 , Figure 9 , Figure 11 , Figure 12 and Figure 16 As shown, the stirring assembly 3 further includes a stirring column 34. The stirring part 321 is provided with at least one mounting hole 3211. The stirring column 34 is fixedly installed on the stirring part 321 through the mounting hole 3211, and along the first direction X, both ends of the stirring column 34 extend out of the stirring part 321 respectively.

[0077] Specifically, as Figure 11 shown, the stirring paddle 32 includes six stirring parts 321. Among them, 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, which is specifically set according to the actual situation and will not be specifically limited here.

[0078] Further, as Figure 6 shown, each mounting hole 3211 is fixedly installed with a stirring column 34. Optionally, the stirring column 34 can be configured as a cylinder or a prism, which is specifically set according to the actual situation. When the first stirring shaft 31 rotates along its own axial direction, the stirring column 34 rotates with the first stirring shaft 31. The stirring column 34 can cooperate with the stirring paddle 32 to stir the materials in the stirring space 21. At the same time, the stirring column 34 has the function of breaking materials. When larger lump materials come into contact with the stirring column 34, the stirring column 34 can break the larger lump materials into particles or powders by impact, further improving the stirring effect of the stirring device 100.

[0079] As a specific example, continue to refer to Figure 11As shown, one mounting hole 3211 is provided in each of three stirring parts 321 among the six stirring parts 321, and two mounting holes 3211 are provided in each of the other three stirring parts 321 among the six stirring parts 321. Among them, the stirring parts 321 provided with two mounting holes 3211 and the stirring parts 321 provided with one mounting hole 3211 are arranged alternately at intervals. In this way, the dispersion effect of the materials to be stirred can be guaranteed to the greatest extent.

[0080] It should be noted that in the present application, along the first direction X, both ends of the stirring column 34 extend out of the stirring part 321. In this way, the contact area between the stirring column 34 and the materials to be stirred in the first direction X can be further increased. When the first stirring shaft 31 rotates along its own axial direction, the stirring column 34 can better stir the materials in the main stirring area, increasing the fluidity of the materials in the stirring space 21 and promoting the rapid mixing of each component in the materials.

[0081] In some embodiments of the present application, such as Figure 4 、 Figure 6 、 Figure 9 、 Figure 12 and Figure 16 As shown, the stirring assembly 3 further includes a diversion cone 35. The diversion cone 35 is arranged in the stirring space 21. Along the first direction X, the diversion cone 35 is fixedly connected to the first stirring shaft 31 and is concentric with the first stirring shaft 31. Along the first direction X, the diversion cone 35 is arranged on the side of the stirring paddle 32 away from the first scraper 33.

[0082] Specifically, along the first direction X, the diversion cone 35 is fixedly installed at the upper end of the first stirring shaft 31, and the height of the diversion cone 35 is higher than the height of the stirring paddle 32. Further, along the first direction X, the diversion cone 35 is concentric with the first stirring shaft 31. With such a setting, when the first stirring shaft 31 rotates along its own axial direction, the diversion cone 35 rotates along the axis of the first stirring shaft 31. When the materials are poured into the stirring space 21 from above the stirring bucket 2 or the first scraper 33 throws the materials deposited near the bottom wall 22 upward again, the diversion cone 35 can divert and disperse the materials, so that the materials are diverted and dispersed to the stirring areas corresponding to the stirring paddle 32 or the first scraper 33.

[0083] In some embodiments of the present application, such as Figures 4 - 6 、 Figure 9 、 Figure 12 and Figure 16As shown, the stirring assembly 3 further includes a bushing 36. The bushing 36 is fixedly provided on the mounting bracket 1. A part of the first stirring shaft 31 is rotatably provided in the bushing 36. Along the radial direction of the first stirring shaft 31, the bushing 36 is spaced apart from the first stirring shaft 31 to form an air inlet passage. Along the first direction X, the bushing 36 penetrates through the stirring barrel 2 so that a part of the bushing 36 is provided in the stirring space 21. Among them, the air inlet passage is communicated with the stirring space 21, and the bushing 36 is provided with an air inlet hole 361 communicated with the air inlet passage.

[0084] Specifically, as Figure 4 shown, a part of the bushing 36 extends into the stirring space 21. A part of the bushing 36 is located outside the stirring barrel 2 and is fixedly connected to the mounting bracket 1 below the stirring barrel 2. Further, a part of the first stirring shaft 31 is rotatably provided in the bushing 36 through a main shaft bearing 37. Among them, 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 out of the bushing 36. A pulley protrusion 311 is provided at the end of the first stirring shaft 31 extending out of the bushing 36. Among them, the pulley protrusion 311 of the first stirring shaft 31 is drivingly connected to the output shaft of the first motor 12 through a belt 13. When the output shaft of the first motor 12 rotates, under the combined action of the belt 13 and the pulley protrusion 311, the first stirring shaft 31 rotates relative to the main shaft bearing 37 along the axial direction of the first stirring shaft 31, so as to realize 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.

[0085] Further, along the radial direction of the first stirring shaft 31, the bushing 36 is spaced apart from the first stirring shaft 31 to form an air inlet passage. The bushing 36 is further provided with an air inlet hole 361 penetrating through the side wall of the bushing 36 so that the air inlet hole 361 is communicated with the air inlet passage. It can be understood that since a part of the bushing 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 bushing 36 is spaced apart from the first stirring shaft 31 to form an air inlet passage. With such a setting, the air inlet passage is communicated with the stirring space 21.

[0086] When a seal is provided at the position where the first stirring shaft 31 extends out of the bushing 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 passage and then enters the stirring space 21. With such a setting, by continuously blowing air into the stirring space 21, it is possible to prevent material particles from falling into the gap between the first stirring shaft 31 and the bushing 36.

[0087] In some embodiments of the present application, an oil seal 38 is provided between the bushing 36 and the first stirring shaft 31. Specifically, the oil seal 38 is disposed within the intake passage formed by the bushing 36 and the first stirring shaft 31, and the oil seal 38 does not block the intake passage. In this way, both the gas transmission function of the intake passage is ensured, and a certain oil sealing effect of the oil seal 38 is also ensured.

[0088] In some embodiments of the present application, such as Figure 4 and Figure 14 shown, the stirring device 100 further includes: a honeycomb jacket 4, the honeycomb jacket 4 is disposed within the side wall of the stirring barrel 2, a heat exchange flow passage 41 is formed within the honeycomb jacket 4, and a medium inlet and a medium outlet communicating with the heat exchange flow passage 41 are further provided on the side wall of the stirring barrel 2.

[0089] Specifically, the side wall of the stirring barrel 2 includes an inner side wall and an outer side wall. Along the radial direction of the stirring barrel 2, the inner side wall and the outer side wall are spaced apart to form an installation space, and the honeycomb jacket 4 is fixedly installed within the installation space. Further, referring to Figure 14 shown, the honeycomb jacket 4 includes a jacket outer wall 42 and a jacket inner wall, a heat exchange flow passage 41 is formed between the jacket outer wall 42 and the jacket inner wall. Among them, the jacket outer wall 42 is fixedly connected to the outer side wall of the stirring barrel 2, and the jacket inner wall is welded to the inner side wall of the stirring barrel 2 through a jacket protrusion 43, and a jacket welding point 44 is formed on the jacket protrusion 43.

[0090] Further, a medium inlet and a medium outlet communicating with the heat exchange flow passage 41 are provided on the side wall of the stirring barrel 2. It can be understood that the honeycomb jacket 4 is provided with a first opening and a second opening communicating with the heat exchange flow passage 41. Among them, the first opening of the honeycomb jacket 4 is communicated with the medium inlet through a connecting pipeline, and the second opening of the honeycomb jacket 4 is communicated with the medium outlet through a connecting pipeline. With such a setting, when it is necessary to cool the material within the stirring space 21, a refrigerating medium is conveyed to the heat exchange flow passage 41 of the honeycomb jacket 4 through the medium inlet of the stirring barrel 2. In this way, the refrigerating medium can exchange heat with the material within the stirring space 21 through the honeycomb jacket 4 and the side wall of the stirring barrel 2, and the refrigerating medium after heat exchange can be discharged through the medium outlet of the stirring barrel 2, thereby reducing the temperature of the material within the stirring space 21; similarly, when it is necessary to heat up the material within the stirring space 21, a heating medium is conveyed to the heat exchange flow passage 41 of the honeycomb jacket 4 through the medium inlet of the stirring barrel 2, the heating medium can exchange heat with the material within the stirring space 21 through the honeycomb jacket 4 and the side wall of the stirring barrel 2, and the heating medium after heat exchange can be discharged through the medium outlet of the stirring barrel 2, thereby increasing the temperature of the material within the stirring space 21. Thus, by providing the honeycomb jacket 4, the temperature of the stirred material can be flexibly adjusted to meet different temperature requirements.

[0091] In some embodiments of the present application, such as Figures 1 - 4As shown in the figure, along the first direction X, the upper end of the mixing barrel 2 has a feed hole 23 communicating with the mixing space 21. The mixing device 100 further includes: a cover plate 5 and a first driving cylinder 6. Along the first direction X, the cover plate 5 is disposed opposite to the feed hole 23. The first driving cylinder 6 is fixedly provided on the mounting bracket 1, and the first driving cylinder 6 is adapted to drive the cover plate 5 to move along the first direction X so that the cover plate 5 selectively opens or seals the feed hole 23.

[0092] It should be noted that the currently common cover plate lifting mechanisms include hydraulic lifting structures, mechanical chain lifting structures, electric screw rod lifting structures, and worm and worm gear lifting structures. Among them, the working principle of the hydraulic lifting structure is to drive the movement of the cover plate 5 through the pressure generated by the hydraulic system. Its advantages are that it can provide a relatively large lifting force, the action is stable, and the lifting height can be accurately controlled. Its disadvantages are that the system is relatively complex and the maintenance cost is relatively 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 that the structure is relatively simple and the reliability is relatively high. The disadvantage is that the lifting speed is relatively slow and the noise is relatively large; the working principle of the electric screw rod lifting structure is that the motor drives the screw rod to rotate, thereby driving the nut cooperating with it to move up and down. Its advantages are high precision, stable operation, and low noise. The disadvantage is that the bearing capacity is relatively small and it is only suitable for small equipment; the working principle of the worm and worm gear lifting structure is to use the transmission characteristics of the worm and worm gear to realize the lifting of the cover plate 5. Its advantages are that it has a relatively large transmission ratio and can provide a self-locking function to ensure that it will not fall by itself when the driving is stopped. The disadvantage is that the efficiency is relatively low and the wear is relatively large.

[0093] 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 today.

[0094] Based on this, in this application, the cover plate lifting mechanism is set as the first driving cylinder 6, and the number of the first driving cylinders 6 can be multiple. Refer to Figure 1As shown in the figure, a first driving cylinder 6 is provided on each side of the stirring barrel 2. Further, the first driving cylinder 6 is fixedly installed on the mounting bracket 1, and the fixed installation method includes but is not limited to bolt connection, etc. Along the first direction X, the cover plate 5 is disposed opposite to the feed hole 23 of the stirring barrel 2. Each first driving cylinder 6 has a first piston. One end of the first piston is disposed inside the first driving cylinder 6, and the other end of the first piston is fixedly connected to the cover plate 5. In this application, by selectively supplying compressed air into the first driving cylinder 6, the first piston can be telescoped 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. In this way, the cover plate 5 opens the feed hole 23, facilitating the addition of the stirring material. After the material is added, the cover plate 5 is required to cover the feed hole 23 to prevent the material from splashing out of the feed hole 23 during the stirring 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.

[0095] It should be noted that the first driving cylinder 6 can drive the first piston to move through compressed air to realize the lifting or lowering of the cover plate 5. Compared with the traditional cover plate lifting mechanism, the reaction is rapid, the efficiency is high, and the overall structure is relatively simple and the cost is low. At the same time, by arranging a plurality of first driving cylinders 6 to drive the cover plate 5 to move, it is beneficial to improve the stability of the cover plate 5 during the lifting and lowering process.

[0096] In some embodiments of this application, as Figures 1 - 4 shown, the stirring device 100 further includes: a mounting frame 7 and a guide post 8. The mounting frame 7 is fixedly arranged on the mounting bracket 1, and the fixed installation method includes but is not limited to bolt connection. The first driving cylinder 6 is fixedly arranged on the mounting bracket 1, and the fixed installation method includes but is not limited to bolt connection. Along the first direction X, the upper end of the guide post 8 is fixedly connected to the cover plate 5. The mounting frame 7 is provided with a guide hole 71 that is in guiding cooperation with the guide post 8. Along the first direction X, the guide post 8 is movable relative to the guide hole 71. Optionally, a linear bearing is provided in the guide hole 71, and the guide post 8 is assembled with the linear bearing in guiding cooperation.

[0097] As a specific example, as Figure 1 shown, along the second direction, a mounting frame 7 is provided on each side of the stirring barrel 2. Each mounting frame 7 is correspondingly provided with a first driving cylinder 6 and two guide posts 8. Along the third direction, the two guide posts 8 are respectively arranged on both sides of the first driving cylinder 6. Among them, the first direction X, the second direction, and the third direction are perpendicular to each other in pairs. The mounting frame 7 is respectively provided with guide holes 71 corresponding to the two guide posts 8. With such a setting, when the first driving cylinder 6 drives the cover plate 5 to move up and down, through the guiding cooperation between the guide post 8 and the guide hole 71, it is beneficial to improve the stability of the cover plate 5 during the lifting and lowering process.

[0098] In some embodiments of the present application, as Figure 3 shown, along the first direction X, a limiting member 9 is fixedly connected to the lower end of the guiding column 8. The stirring device 100 further includes a plugging structure, and the plugging structure is further adapted to selectively plug and cooperate with the limiting member 9 when the cover plate 5 opens the feeding hole 23 to limit the movement of the limiting member 9 along the first direction X.

[0099] Specifically, the limiting member 9 is arranged below the mounting frame 7. The guiding column 8 passes through the mounting frame 7 and is fixedly connected to the limiting member 9. The limiting member 9 is provided with a limiting hole 91. The plugging structure can be configured as a third driving cylinder. The third driving cylinder has a third piston. The third driving cylinder is used to drive the third piston to perform telescopic movement, and the size of the third piston matches the size of the limiting hole 91. When the first driving cylinder 6 drives the cover plate 5 to move upward to a preset position to open the feeding hole 23, the third driving cylinder drives the third piston to insert into the limiting hole 91 of the limiting member 9 to limit the movement of the cover plate 5 along the first direction X through the limiting member 9. With such a setting, it can be avoided that the cover plate 5 drops when the first driving cylinder 6 fails, improving the safety of the stirring assembly.

[0100] In some embodiments of the present application, as Figure 16 shown, the stirring device 100 further includes: a second stirring shaft 10 and at least one second scraper 11. The second stirring shaft 10 is rotatably arranged 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. A part of the second stirring shaft 10 is arranged in the stirring space 21. The second scraper 11 is arranged 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 adapted to drive the scraping portion 111 to clean the inner peripheral wall of the stirring barrel 2.

[0101] 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. Among them, 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 Figure 16 shown, a part of the second stirring shaft 10 is located in the stirring space 21, and the other part 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 relative to the cover plate 5 along the axial direction of the second stirring shaft 10, thereby realizing the driving of the second stirring shaft 10.

[0102] Further, the stirring device 100 is further provided with at least one second scraper 11. The second scraper 11 is arranged in the stirring space 21 and fixedly connected to the outer peripheral wall of the second stirring shaft 10. Thus, 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.

[0103] Further, 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. It can be understood that the scraping portion 111 is in abutting contact with the inner peripheral 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 peripheral wall of the stirring barrel 2. With such a setting, the materials attached to the inner peripheral wall of the stirring barrel 2 can be scraped off so that they can re-participate in the material stirring, greatly reducing the stirring blind area.

[0104] In some embodiments of the present application, such as Figure 1 、 Figure 15 and Figure 16 shown, the stirring barrel 2 is further provided with a discharge hole 24. The discharge hole 24 is fixedly connected to the discharge pipe 15 through a connecting flange. A discharge cavity 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 communicates with the discharge cavity 152. Further, in order to control the selective communication or disconnection between the discharge hole 24 and the discharge cavity 152, a blocking member 16 is further arranged in the discharge cavity 152. The blocking member 16 is in transmission connection with a second driving cylinder 17 fixed on the discharge pipe 15. For example, the second driving cylinder 17 has a second piston. The second driving cylinder 17 is fixedly connected to the blocking member 16 through the second piston. The second driving cylinder 17 drives the second piston to expand and contract to move the blocking member 16 in the discharge cavity 152. When the blocking member 16 moves in the discharge cavity 152, the blocking member 16 can selectively block or open the discharge hole 24 of the stirring barrel 2. Further, the discharge pipe 15 is further provided with a discharge hole 151 communicating with the discharge cavity 152. With such a setting, when it is necessary to discharge the stirred materials, the second driving cylinder 17 is used to drive the blocking member 16 to open the discharge hole 24, so that the stirred materials can flow out from the discharge hole 151 of the discharge pipe 15. And when the material discharge is completed, the second driving cylinder 17 is used to drive the blocking member 16 to block the discharge hole 24 to prevent leakage during subsequent material stirring.

[0105] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising the element.

[0106] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and reference can be made to the relevant part of the method embodiment for the related content.

[0107] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

[0108] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A stirring device, characterized in that, Comprising: Installation bracket; Mixing barrel, the mixing barrel is fixedly arranged on the installation bracket, and a mixing space is formed inside the mixing barrel; Mixing assembly, the mixing assembly includes a first mixing shaft and mixing paddles, the first mixing shaft is rotatably arranged on the installation bracket along the axial direction of the first mixing shaft, the axial direction of the first mixing shaft is parallel to the first direction, a part of the first mixing shaft is arranged inside the mixing space, the mixing paddles are arranged inside the mixing space and fixedly connected to the first mixing shaft, the mixing paddles include a plurality of mixing parts, along the radial direction of the first mixing shaft, each mixing part extends towards the direction close to the mixing barrel, and the plurality of mixing parts are arranged at intervals in sequence along the circumferential direction of the first mixing shaft; Wherein, the mixing assembly further includes a first scraper, the first scraper is arranged inside the mixing space and fixedly connected to the outer peripheral wall of the first mixing shaft, along the radial direction of the first mixing shaft, the first scraper extends as a whole towards the direction close to the mixing barrel, along the first direction, the first scraper is spaced apart from the mixing paddles, the first scraper is closer to the bottom wall of the mixing barrel than the mixing paddles, and along the first direction, the first scraper is spaced apart from the bottom wall of the mixing barrel.

2. The stirring device according to claim 1, wherein Along the first direction, the spacing distance between the first scraper and the bottom wall of the mixing barrel is d, satisfying the relational expression: 2mm ≤ d ≤ 5mm.

3. The stirring device according to claim 1, wherein There are a plurality of the first scrapers, and the plurality of first scrapers are arranged at intervals in sequence along the circumferential direction of the first mixing shaft.

4. The stirring device according to claim 1, characterized in that, The first scraper includes a scraper body and a bending part, the scraper body is fixedly connected to the outer peripheral wall of the first mixing shaft, along the radial direction of the first mixing shaft, the scraper body extends towards the direction close to the mixing barrel, and the end of the scraper body far from the first mixing shaft is connected to the bending part; Along the radial direction of the first mixing shaft, the bending part is arranged between the scraper body and the mixing barrel, and along the first direction, the bending part is arranged on the side of the scraper body far from the bottom wall of the mixing barrel.

5. The stirring device according to claim 4, characterized in that, A first included angle a is formed between the scraper body and the bending part, satisfying the relational expression: 120° ≤ a ≤ 160°.

6. The stirring device according to claim 4, characterized in that, The scraper body has a first cutting surface, and along the rotation direction of the first mixing shaft, the first cutting surface is inclined towards the direction close to the bottom wall of the mixing barrel.

7. The stirring device according to claim 4, characterized in that, The bending part has a first horizontal surface and a second cutting surface connected to each other, along the rotation direction of the first mixing shaft, the second cutting surface is inclined towards the direction close to the bottom wall of the mixing barrel, and a second included angle b is formed between the first horizontal surface and the second cutting surface, satisfying the relational expression: 20° ≤ b ≤ 40°.

8. The stirring device according to claim 4, wherein, The first scraper is configured as an arc-shaped scraper.

9. The stirring device according to claim 1, characterized in that, The mixing assembly further includes mixing columns, at least one mounting hole is provided on the mixing part, the mixing columns are fixedly installed on the mixing part through the mounting holes, and along the first direction, both ends of the mixing columns respectively extend out of the mixing part.

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

11. The stirring device according to claim 1, characterized in that, The stirring assembly further includes a bushing, which is fixedly arranged on the mounting bracket. A part of the first stirring shaft is rotatably arranged in the bushing. Along the radial direction of the first stirring shaft, the bushing is spaced apart from the first stirring shaft to form an air inlet channel; Along the first direction, the bushing penetrates through the stirring barrel so that a part of the bushing is arranged in the stirring space. Wherein, the air inlet channel is communicated with the stirring space, and the bushing is provided with an air inlet hole communicated with the air inlet channel.

12. The stirring device according to claim 1, characterized in that, The stirring device further includes: a honeycomb jacket, which is arranged in the side wall of the stirring barrel. A heat exchange flow 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 communicated with the heat exchange flow channel.

13. The stirring device according to any one of claims 1-12, characterized in that, Along the first direction, the upper end of the stirring barrel has a feed hole communicated with the stirring space; The stirring device further 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 fixedly arranged on the mounting bracket, and the first driving cylinder is adapted to drive the cover plate to move along the first direction so that the cover plate selectively opens or seals the feed hole.

14. The stirring device according to claim 13, characterized in that, The stirring device further includes: a mounting frame and a guide post. The mounting frame is fixedly arranged on the mounting bracket, and the first driving cylinder is fixedly arranged on the mounting bracket. Along the first direction, the upper end of the guide post is fixedly connected to the cover plate, and the mounting frame is provided with a guide hole guidingly matched with the guide post. Along the first direction, the guide post is movable relative to the guide hole.

15. The stirring device according to claim 14, wherein Along the first direction, a limiting member is fixedly connected to the lower end of the guide post. The stirring device further includes a plugging structure, and the plugging structure is further adapted to selectively plug and cooperate with the limiting member when the cover plate opens the feed hole to limit the movement of the limiting member along the first direction.

16. The stirring device according to claim 13, characterized in that, The stirring device further includes: a second stirring shaft and at least one second scraper. The second stirring shaft is rotatably arranged 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. A part of the second stirring shaft is arranged in the stirring space. The second scraper is arranged in the stirring space and fixedly connected to the outer peripheral wall of the second stirring shaft. Along the radial direction of the second stirring shaft, a scraping portion is formed at the end of the second scraper away from the second stirring shaft. The scraping portion extends along the first direction, and the second stirring shaft is adapted to drive the scraping portion to clean the inner peripheral wall of the stirring barrel.

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