Mixing and stirring equipment

Abstract

The utility model discloses material mixing and stirring equipment. The material mixing and stirring equipment comprises a material mixing barrel body, a stirring device and a material pushing device, the material mixing barrel is provided with a material mixing cavity. The stirring device comprises a stirring impeller and a stirring driving component. The stirring impeller is arranged at the bottom of the mixing cavity. The stirring driving component is used for driving the stirring impeller to rotate. The material pushing device comprises two material pushing blade sets and a material pushing driving component. The two pushing blade sets are arranged on the left side and the right side of the stirring impeller set respectively. And the material pushing directions of the two material pushing blade groups face the stirring impeller group. The material pushing driving component is used for driving the material pushing blade set to rotate. According to the mixing and stirring equipment disclosed by the utility model, the materials are extruded, collided and mixed between the stirring impeller group and the material pushing blade group by applying a mutual impact effect on the materials, so that the materials can be quickly, sufficiently and uniformly mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery material production, and particularly relates to a mixing and stirring device. Background Technique

[0002] With the wide application of lithium-ion batteries in the fields of power batteries, energy storage equipment, etc., the demand for lithium-ion battery cathode materials has increased sharply. At present, the synthesis method of lithium-ion cathode materials mainly adopts the solid-phase sintering method, and a key process involved is mixing. How to uniformly mix materials such as precursors, lithium salts, and additives together, especially the large-scale uniform mixing of materials with large density differences and large fluidity differences, is the current difficulty.

[0003] Conventional mixing equipment can be divided into container rotation type and container fixed type according to the movement mode of the mixing container. For lithium battery cathode materials, especially ternary cathode and lithium cobaltate materials, the commonly used ones mainly include inclined cylindrical mixers, screw cone mixers, and high-speed mixers. Due to problems such as large density differences and large fluidity differences of the raw and auxiliary materials of lithium-ion cathode materials, these mixing equipment in the prior art all require a long time of mixing and stirring to make the mixing uniformity reach a certain standard, and there is still a large room for improvement in the mixing efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mixing and stirring device to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or creation condition.

[0005] The technical solution adopted to solve the above technical problems:

[0006] A mixing and stirring device includes: a mixing cylinder body, a stirring device, and a pushing device;

[0007] The mixing cylinder body has a mixing cavity;

[0008] The stirring device includes a stirring impeller group and a stirring driving member. The stirring impeller group is arranged at the bottom of the mixing cavity, and the stirring driving member is used to drive the stirring impeller group to rotate;

[0009] The pushing device includes two groups of pushing blade groups and a pushing driving member. The two groups of pushing blade groups are respectively arranged on the left and right sides of the stirring impeller group, and the pushing directions of the two groups of pushing blade groups both face the stirring impeller group. The pushing driving member is used to drive the pushing blade group to rotate.

[0010] The mixing and stirring equipment provided by the present utility model has at least the following beneficial effects: The stirring drive member drives the stirring impeller group to rotate, so as to stir and mix the materials. While the two pushing blade groups can perform lateral stirring, they can also convey the materials from the left and right sides of the mixing chamber to the middle. The materials form a circulating backflow in the middle and the left and right side areas of the mixing chamber, so that the materials can be repeatedly pushed into the stirring range of the stirring impeller group to achieve continuous stirring, enabling the materials with large differences in density and fluidity to be fully mixed. The mixing and stirring equipment of the present utility model exerts opposite effects on the materials through the stirring impeller group and the pushing blade group, causing the materials to form extrusion and collision mixing between the two, so that the materials can be quickly and fully mixed evenly.

[0011] As a further improvement of the above technical solution, the mixing cylinder body is in the shape of a cylindrical barrel, the mixing cylinder body has a central axis extending in the left-right direction, and the pushing blade is coaxially arranged with the central axis. Through the above technical solution, the inner wall of the cylindrical mixing cylinder body can be close to the rotation range of the pushing blade, which can avoid large gaps and delay the mixing of materials.

[0012] As a further improvement of the above technical solution, the pushing drive member includes a pushing drive unit and a drive main shaft. The drive main shaft rotates through the mixing cylinder body along the central axis, and both groups of the pushing blade groups are fixedly connected to the drive main shaft. The pushing drive unit is drivingly connected to the drive main shaft. Through the above technical solution, the pushing drive unit synchronously drives the paired pushing blades to rotate through the drive main shaft, realizing pushing the materials towards each other.

[0013] As a further improvement of the above technical solution, each group of the pushing blade groups includes a plurality of pushing blades, and the plurality of pushing blades are arranged axially.

[0014] As a further improvement of the above technical solution, the diameters of the plurality of pushing blades arranged on the same side of the stirring impeller group are inconsistent, and the diameters of the plurality of pushing blades in each group of the pushing blade groups gradually decrease towards the direction of the stirring impeller group. Through the above technical solution, multiple pairs of pushing blades can realize multi-stage stirring and pushing, pushing the materials on the left and right sides towards the middle.

[0015] As a further improvement of the above technical solution, the stirring impeller group includes a plurality of stirring impellers, and the plurality of stirring impellers are arranged axially up and down. The multi-layer impeller structure can enable the materials to form continuous cross-movement in the stirring area, making the mixing effect of materials with different specific gravities or large differences in fluidity better.

[0016] As a further improvement of the above technical solution, the number of the pushing blades in each group of the pushing blade groups is equal to the number of the stirring impellers in the stirring impeller group, the pushing blades and the stirring impellers correspond to each other one by one, and the bottom end of the outer edge of the pushing blade is aligned with the upper end of the corresponding stirring impeller in the vertical direction. The stirring impellers and the pushing blades correspond to each other one by one, and the materials can be squeezed and collided in the space between the stirring impellers and the pushing blades, so as to realize rapid mixing.

[0017] As a further improvement of the above technical solution, an inner pushing scraper is arranged between two adjacent pushing blades, the inner pushing scraper is coaxially arranged with the pushing blade, and the radial distal end of the inner pushing scraper has a scraping part. Through the above technical solution, the inner pushing scraper rotates to scrape the materials from the inner wall of the mixing cylinder body through the scraping part, so as to prevent the materials from remaining on the cylinder wall.

[0018] As a further improvement of the above technical solution, a premixing device is arranged in the middle of the upper side of the mixing cylinder body, the premixing device includes a premixing bin, a stirring paddle, a feeding channel and a feeding auger, the stirring paddle is arranged in the premixing bin, the feeding channel is arranged between the premixing bin and the mixing cavity, and the feeding auger is arranged in the feeding channel. The stirring paddle stirs the premixed materials in the premixing bin, and the feeding auger can push the materials into the mixing cavity to realize automatic feeding.

[0019] As a further improvement of the above technical solution, the front side wall or the rear side wall of the mixing cylinder body has a first feeding port, the upper end of the mixing cylinder body is provided with a second feeding port and a mixing degassing port, and the bottom of the mixing cylinder body has two discharge ports arranged left and right. The mixing degassing port can balance the air pressure inside and outside the mixing cylinder body. The two discharge ports cooperate with the pushing device to greatly improve the material discharge efficiency. The first feeding port can facilitate the feeding of the original materials, and the second feeding port can prevent the materials from splashing or overflowing during feeding. Description of the Drawings

[0020] The following further describes the present invention in conjunction with the drawings and embodiments;

[0021] Figure 1 It is the front view of one embodiment of the mixing and stirring equipment provided by the present invention;

[0022] Figure 2 It is the front cross-sectional view of one embodiment of the mixing and stirring equipment provided by the present invention;

[0023] Figure 3 It is the front cross-sectional view of one embodiment of the premixing device provided by the present invention;

[0024] Figure 4 It is the schematic diagram of one embodiment of the inner pushing scraper provided by the present invention.

[0025] In the figure: 100, the mixing cylinder; 110, the mixing chamber; 120, the first feeding port; 130, the second feeding port; 140, the mixing and degassing port; 150, the discharging port; 160, the flying knife; 200, the stirring device; 210, the stirring impeller group; 211, the first stirring wheel; 212, the second stirring wheel; 213, the third stirring wheel; 220, the stirring driving member; 221, the stirring rotating shaft; 222, the stirring motor; 300, the pushing device; 310, the pushing blade group; 311, the first spiral blade; 312, the second spiral blade; 313, the third spiral blade; 320, the pushing driving member; 321, the pushing driving unit; 322, the driving main shaft; 330, the inner pushing scraper; 331, the rod body; 332, the scraping part; 400, the premixing device; 410, the premixing cylinder; 411, the premixing bin; 412, the feeding channel; 413, the premixing feeding port; 414, the premixing and degassing port; 420, the premixing stirring mechanism; 421, the stirring paddle; 422, the premixing driving unit; 430, the premixing discharging mechanism; 431, the feeding auger; 432, the discharging driving unit. Detailed implementation manners

[0026] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc. indicating the orientation or position relationship is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0028] In the description of the present invention, if there are descriptions with words such as "several", its meaning is one or more, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0029] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Referring to Figures 1 to 4 , the following embodiments are made for the mixing and stirring equipment of the present invention:

[0031] A mixing and stirring device, comprising: a mixing cylinder body 100, a stirring device 200 and a feeding device 300.

[0032] The mixing cylinder body 100 has a hollow mixing cavity 110. The mixing cavity 110 extends in the left-right direction.

[0033] The stirring device 200 includes: a stirring impeller group 210 and a stirring driving member 220. The stirring impeller group 210 is rotatably arranged at the bottom of the mixing cavity 110, and the rotation axis of the stirring impeller group 210 extends in the up-down direction. The stirring driving member 220 is drivingly connected to the stirring impeller group 210 to make the stirring impeller group 210 rotate around its own rotation axis.

[0034] The feeding device 300 includes two groups of feeding blade groups 310 and a feeding driving member 320. The two groups of feeding blade groups 310 are respectively arranged on the left and right sides of the stirring impeller group 210. The feeding directions of the two groups of feeding blade groups 310 both face the stirring impeller group 210, and the feeding driving member 320 is used to drive the feeding blade groups 310 to rotate.

[0035] Each group of the feeding blade groups 310 includes a plurality of feeding blades, and the plurality of feeding blades are arranged in an axial arrangement. The feeding blades are spiral and extend along the length direction. The feeding blades of the two groups of feeding blade groups 310 are coaxial with each other and the feeding directions are arranged towards each other. The feeding driving member 320 is drivingly connected to the plurality of feeding blades to make the plurality of feeding blades rotate relative to the mixing cylinder body 100.

[0036] During actual use, the stirring driving member 220 drives the stirring impeller to rotate to mix and stir the materials. The stirring device 200 and the feeding device 300 work simultaneously. The spiral feeding blades extending along the length direction can, while stirring, also convey the materials from the left and right sides of the mixing cavity 110 to the middle. The materials form a circulating backflow in the middle and the left and right side areas of the mixing cavity 110, so that the materials can be repeatedly pushed into the stirring range of the stirring impeller, realizing continuous stirring, and enabling the materials with large differences in density and fluidity to be fully mixed.

[0037] In this embodiment, the mixing cylinder body 100 is in the shape of a horizontally arranged cylindrical cylinder. The stirring impeller is arranged in the middle of the mixing cavity 110. The mixing cylinder body 100 has a central axis extending in the left-right direction, and the pushing blade is arranged coaxially with the central axis. It should be noted that in order to avoid material accumulation in dead corners, the corners of the mixing cylinder body 100 are all rounded, and the corners are in arc transition, so that the material can slide better from the inner wall of the mixing cylinder body 100 under the action of gravity. It should be noted that: the central axis is a virtual feature, which is set for the convenience of accurately describing the structure and geometric features of the mixing cylinder body 100.

[0038] The front side wall or the rear side wall of the mixing cylinder body 100 has a first feeding port 120, the upper end of the mixing cylinder body 100 is provided with a second feeding port 130 and a mixing degassing port 140, and the bottom of the mixing cylinder body 100 has a discharge port 150. Each sealing device is supplied with a sealing protective gas. At the same time, there are also factors such as material dust during the mixing process. By arranging the mixing degassing port 140 at the upper right of the mixing cylinder body 100, the internal air pressure of the mixing cylinder body 100 is balanced. Before mixing, the materials to be mixed can be fed through the first feeding port 120. During the mixing process, in order to avoid material splashing, feeding can be carried out through the second feeding port 130.

[0039] The pushing driving member 320 includes: a pushing driving unit 321 and a driving main shaft 322. The driving main shaft 322 is arranged along the central axis of the mixing cylinder body 100, and the driving main shaft 322 rotates coaxially through the mixing cylinder body 100. Both the left and right ends of the mixing cylinder body 100 are rotationally and hermetically connected to the driving main shaft 322. The two pushing blades arranged in pairs have opposite spiral directions and are both fixedly connected to the driving main shaft 322. The pushing driving unit 321 is arranged at the left end or the right end of the driving main shaft 322, and the pushing driving unit 321 is drivingly connected to the driving main shaft 322.

[0040] Specifically, considering the convenience of controlling the rotation speed of the driving main shaft 322, the pushing driving unit 321 in this embodiment adopts a servo motor. In some other embodiments, the pushing driving unit 321 can be a stepping motor or a pneumatic motor and other rotary driving elements. The output shaft of the pushing driving unit 321 is drivingly connected to the end of the driving main shaft 322 through a coupling or a reducer. The pushing driving unit 321 synchronously drives the pushing blades of the two pushing blade groups 310 to rotate through the driving main shaft 322, so as to achieve the effect of pushing materials towards each other. In some other embodiments, the pushing driving unit 321 and the driving main shaft 322 can be drivingly connected through various transmission methods such as belt transmission, chain transmission, gear transmission or worm and gear transmission.

[0041] To fully mix and push the materials in the mixing chamber 110, the pushing blade group 310 includes a plurality of the pushing blades, and the plurality of the pushing blades are arranged at intervals along the axial direction. Refer to the attached Figure 2 , in this embodiment, there are three pushing blades in each pushing blade group 310. The three pushing blades are respectively a first spiral blade 311, a second spiral blade 312, and a third spiral blade 313.

[0042] The first spiral blade 311, the second spiral blade 312, and the third spiral blade 313 are all coaxially arranged and arranged along the axial direction. The paired first spiral blades 311 are arranged on the opposite sides of the two second spiral blades 312, and the two third spiral blades 313 are respectively arranged on the opposite sides of the two second spiral blades 312.

[0043] An inner pushing scraper 330 is provided between two adjacent pushing blades. The inner pushing scraper 330 is coaxially connected to the pushing blade, and the radial distal end of the inner pushing scraper 330 has a scraping part 332.

[0044] In this embodiment, the inner pushing scraper 330 is provided between the first spiral blade 311 and the second spiral blade 312, and between the second spiral blade 312 and the third spiral blade 313. The inner pushing scraper 330 includes: a rod body 331 and a tool bit. The rod body 331 extends radially along the driving main shaft 322. One end of the rod body 331 close to the driving main shaft 322 is fixedly connected to the driving main shaft 322, and the tool bit is detachably installed at the end of the rod body 331 far from the driving main shaft 322.

[0045] The scraping part 332 is arranged at one end of the tool bit, and the other end of the tool bit has a connecting collar sleeved on the rod body 331. The connecting collar and the rod body 331 are locked and fixed by a connecting screw passing through the two. When the connecting screw is loosened, the connecting collar can be disconnected from the rod body 331, so as to replace different types of scraper tool bits or plow blades according to the actual properties of the materials or the mixing requirements.

[0046] The scraping part 332 extends along the left - right direction towards one side of the stirring device 200. The scraping part 332 has an inclined arc surface, making the scraping part 332 have a shape that is thin on one side and thick on the other side along the tangent direction of its rotation path. During actual use, the scraping part 332 is close to or abuts against the inner wall of the mixing cylinder 100. When the driving main shaft 322 rotates, the scraping part 332 can disperse and lift the materials, applying an inward - acting force along the radial direction to the materials, so that the materials move closer to the middle of the mixing chamber 110. In some other embodiments, the scraping part 332 has a shape that is thick in the middle and thin on both sides along the tangent direction of its rotation path to adapt to the situation where the inner - pushing scraper 330 needs to rotate bidirectionally.

[0047] In a further embodiment, the diameters of multiple pusher blades arranged on the same side of the stirring impeller are inconsistent. Among two adjacent pusher blades, the diameter of the pusher blade farther from the stirring device 200 is larger than the diameter of the pusher blade closer to the stirring device 200.

[0048] Refer to the attached Figure 2 , the outer diameter of the third spiral blade 313 is larger than the outer diameter of the second spiral blade 312, and the outer diameter of the second spiral blade 312 is larger than the outer diameter of the first spiral blade 311. The stirring device 200 is arranged in the middle of the mixing chamber 110. The diameters of multiple pusher blades arranged from the outside to the middle of the mixing chamber 110 decrease in sequence, so that the distance between the pusher blade closer to the middle position and the inner wall of the mixing cylinder 100 is larger, thereby ensuring that the materials at both left and right ends can be better pushed towards the high - speed stirring area in the middle for mixing. At the same time, the pusher blades with a smaller outer diameter can provide space for the scraping part 332 of the inner - pushing scraper 330, enabling the inner - pushing scraper 330 to be arranged more closely with the pusher blades.

[0049] The stirring impeller group 210 includes multiple stirring impellers. The multiple stirring impellers are arranged vertically one above the other along the axial direction and are fixedly connected to each other. In this embodiment, the number of stirring impellers is three. The three stirring impellers are respectively the first stirring wheel 211, the second stirring wheel 212, and the third stirring wheel 213.

[0050] The stirring drive member 220 includes a stirring rotating shaft 221 and a stirring motor 222. The axial direction of the stirring rotating shaft 221 is arranged in the up-and-down direction. The stirring rotating shaft 221 penetrates through the bottom of the mixing cylinder body 100 and is rotatably and sealingly connected to the mixing cylinder body 100. The stirring motor 222 is drivingly connected to the stirring rotating shaft 221. The first stirring wheel 211, the second stirring wheel 212, and the third stirring wheel 213 are coaxially sleeved on the stirring rotating shaft 221 in sequence from top to bottom. The first stirring wheel 211, the second stirring wheel 212, and the third stirring wheel 213 are fixedly connected to the stirring rotating shaft 221 by being locked by a fastening nut installed at the top end of the stirring rotating shaft 221 through threads. When the stirring motor 222 drives the stirring rotating shaft 221 to rotate, the first stirring wheel 211, the second stirring wheel 212, and the third stirring wheel 213 can rotate synchronously at a high speed to achieve high-speed stirring of the materials.

[0051] The three-layer impeller structure can enable the materials to form a continuous cross movement within the stirring area, making the mixing effect of materials with different specific gravities or large differences in fluidity better. In this embodiment, the diameter of the first stirring wheel 211 is smaller than the diameters of the second stirring wheel 212 and the third stirring wheel 213. The cross-sectional shape of the first stirring wheel 211 is in the shape of a "concave", and the outer edge of the first stirring wheel 211 bulges upward to form a larger stirring range. The radial distal ends of the second stirring wheel 212 and the third stirring wheel 213 are both arc-transitioned and extend upward, promoting better lateral dispersion and upward throwing of the materials and facilitating uniform mixing of the materials.

[0052] The three stirring impellers are arranged in one-to-one correspondence with three pairs of the pushing blades. Specifically, the highest point at the outer end of the first stirring wheel 211 is aligned with the bottom end of the outer edge of the first spiral blade 311 in the up-and-down direction. The upper end of the outer edge of the second stirring wheel 212 is aligned with the bottom end of the outer edge of the second spiral blade 312 in the up-and-down direction. The upper end of the outer edge of the third stirring wheel 213 is aligned with the bottom end of the outer edge of the third spiral blade 313 in the up-and-down direction.

[0053] The stirring impeller is arranged corresponding to the pushing blade, so that the centrifugal action of the stirring impeller on the material can interact with the pushing action of the pushing blade. Specifically, when the stirring impeller rotates at a high speed, it can stir the material. At the same time, under the action of centrifugal force, the material is thrown out tangentially along the stirring impeller and thus is thrown onto the pushing blades on both sides. When the pushing blade rotates, it can push the material inward to make it close to the direction of the stirring impeller. At the same time, when the stirring impeller rotates, part of the material is thrown tangentially to the inner wall of the mixing cylinder 100, and part of the material rises along the pushing blade, hits the driving main shaft 322, and then falls back into the stirring range of the stirring impeller under the action of gravity. Through the stirring impeller and the pushing blade, the material can be combined tangentially and vertically, so that the material forms a multi-dimensional motion mode, thereby making the material collide with each other and mix more evenly in a cross manner.

[0054] In this embodiment, a flying knife 160 is provided on the inner wall of the mixing cylinder 100. The flying knives 160 are distributed between the pushing blades and the inner pushing scraper 330, and / or above the stirring impeller. The flying knife 160 device can effectively break up the agglomerated materials, so that the mixed materials are stirred evenly in a very short time, and significantly improve the homogeneity of the stirred mixed materials. For those agglomerated materials that are not quickly broken up, the rotation of the stirring impeller or the pushing blade will bring them to the flying knife 160 device, where they are broken up by the flying knife 160. During the whole stirring process, the stirring and pushing cooperate with the breaking up by the flying knife 160 to jointly achieve high-homogeneity mixing of the materials.

[0055] Considering the influence of different mixing processes and the difference in material density on the mixing uniformity, especially the large density difference of raw and auxiliary materials such as additives. Most additives have a small specific gravity and are easy to float during the mixing process, resulting in uneven mixing. A premixing device 400 is provided on the upper side of the mixing cylinder 100 in this embodiment. The premixing device 400 includes: a premixing cylinder 410, a premixing stirring mechanism 420, and a premixing discharging mechanism 430.

[0056] The premixing cylinder 410 includes: a premixing bin 411 and a feeding channel 412. The upper end of the premixing cylinder 410 is provided with a premixing feeding port 413 and a premixing degassing port 414 that communicate with the premixing bin 411. The feeding channel 412 is arranged on the lower side of the premixing bin 411. The lower end of the premixing bin 411 is connected to the middle of the feeding channel 412, and one end of the feeding channel 412 communicates with the mixing chamber 110.

[0057] The premixing and stirring mechanism 420 includes: a stirring paddle 421 and a premixing drive unit 422. The stirring paddle 421 is arranged in the premixing bin 411, and the premixing drive unit 422 is used to drive the stirring paddle 421 to rotate in the premixing bin 411. The premixing discharging mechanism 430 includes: a feeding auger 431 and a discharging drive unit 432. The feeding auger 431 is arranged toward one end connected to the mixing chamber 110. The discharging drive unit 432 is used to drive the feeding auger 431 to rotate.

[0058] In actual use, some raw materials and auxiliary materials are put into the premix bin 411 through the premixing feeding port 413, and the stirring paddle 421 is driven by the premixing driving unit 422 to stir, thereby preliminarily premixing small samples of raw materials and auxiliary materials such as additives. According to the feeding sequence of the mixing process, the feeding auger 431 is driven by the discharging driving unit 432 to rotate, and the premixed small materials are pushed into the mixing chamber 110 to be further mixed with the materials in the mixing chamber 110.

[0059] In this embodiment, the premixing drive unit 422 and the discharging drive unit 432 are both servo motors, the output shaft of the premixing drive unit 422 is fixedly connected to the stirring paddle 421, and the output shaft of the discharging drive unit 432 is fixedly connected to the feeding auger 431. In some other embodiments, the premixing drive unit 422 and the discharging drive unit 432 can also use a rotating drive element such as a stepping motor or a pneumatic motor. The premixing drive unit 422 and the discharging drive unit 432 can be connected to the stirring paddle 421 and the feeding auger 431 through a variety of transmission methods such as belt drive, chain drive, gear drive or worm gear drive.

[0060] In a further embodiment, there are two discharge ports 150. The two discharge ports 150 are arranged in pairs on the left and right sides of the bottom of the mixing barrel 100. After the materials are evenly mixed, they are discharged simultaneously through the two discharge ports 150. During the discharge process, the stirring device 200 and the pushing device 300 are in operation, and the inner push scraper 330 and the pushing blade and the stirring impeller are used to guide the discharge of the materials, thereby increasing the material discharge speed.

[0061] See attached Figures 1 to 4 When the mixing and stirring device of the utility model is actually used for material mixing production: first, the original material is put into the mixing chamber 110 through the first feeding port 120. The stirring driving component 220 drives the multiple stirring impellers to rotate synchronously, and stirs the material in the middle of the mixing chamber 110 at a high speed. The pushing driving component 320 drives the multiple pushing blades to rotate, and stirs and spirally conveys the materials on the left and right sides of the mixing chamber 110.

[0062] The stirring impeller can apply a lateral force to the material to make it move tangentially. The transportation of the pushing blades forms a block and extrusion against this tangential movement, complicating the flow state of the material and forming a strong vortex in the space between the stirring impeller and the pushing blades, enabling the material to be quickly and fully mixed evenly.

[0063] According to the feeding sequence of the mixing process, other auxiliary materials are added into the mixing cavity 110 through the second feeding port 130 or the premixing device 400, and further mixed and stirred. After the materials are mixed evenly, they are discharged simultaneously through the two discharge ports 150 at the bottom of the mixing cylinder 100.

[0064] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can still make various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and purposes of the present invention. These changes, modifications, equivalent variations, or substitutions are all included within the scope defined by the claims of this application. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mixing and stirring device, characterized in that: Comprising: A mixing cylinder body (100), a stirring device (200) and a pushing device (300); The mixing cylinder body (100) has a mixing cavity (110); The stirring device (200) includes a stirring impeller group (210) and a stirring driving member (220). The stirring impeller group (210) is arranged at the bottom of the mixing cavity (110), and the stirring driving member (220) is used to drive the stirring impeller group (210) to rotate; The pushing device (300) includes two groups of pushing blade groups (310) and a pushing driving member (320). The two groups of pushing blade groups (310) are respectively arranged on the left and right sides of the stirring impeller group (210). The pushing directions of the two groups of pushing blade groups (310) both face the stirring impeller group (210), and the pushing driving member (320) is used to drive the pushing blade groups (310) to rotate.

2. The mixing and stirring equipment according to claim 1, wherein: The mixing cylinder body (100) is in a cylindrical shape, the mixing cylinder body (100) has a central axis extending in the left-right direction, and the pushing blade group (310) is coaxially arranged with the central axis.

3. The mixing and stirring device according to claim 2, characterized in that: The pushing driving member (320) includes a pushing driving unit (321) and a driving main shaft (322). The driving main shaft (322) rotates through the mixing cylinder body (100) along the central axis. Both groups of pushing blade groups (310) are fixedly connected to the driving main shaft (322), and the pushing driving unit (321) is drivingly connected to the driving main shaft (322).

4. The mixing and stirring equipment according to claim 1, characterized in that: Each group of pushing blade groups (310) includes a plurality of pushing blades, and the plurality of pushing blades are arranged in the axial direction.

5. The mixing and stirring equipment according to claim 4, characterized in that: The diameters of the plurality of pushing blades arranged on the same side of the stirring impeller group (210) are inconsistent, and the diameters of the plurality of pushing blades in each group of pushing blade groups (310) gradually decrease in the direction towards the stirring impeller group (210).

6. The mixing and stirring equipment according to claim 5, wherein: The stirring impeller group (210) includes a plurality of stirring impellers, and the plurality of stirring impellers are arranged vertically in the axial direction.

7. The mixing and stirring equipment according to claim 6, characterized in that: The number of the pushing blades in each group of pushing blade groups (310) is equal to the number of the stirring impellers in the stirring impeller group (210). The pushing blades and the stirring impellers are in one-to-one correspondence, and the bottom end of the outer edge of the pushing blade is aligned with the upper end of the corresponding stirring impeller in the up-down direction.

8. The mixing and stirring equipment according to claim 4, characterized in that: An inner pushing scraper (330) is arranged between two adjacent pushing blades. The inner pushing scraper (330) is coaxially arranged with the pushing blade, and the radially distal end of the inner pushing scraper (330) has a scraping part (332).

9. The mixing and stirring equipment according to claim 1, characterized in that: A premixing device (400) is provided in the middle of the upper side of the mixing cylinder body (100). The premixing device (400) includes a premixing bin (411), a stirring paddle (421), a feeding channel (412), and a feeding auger (431). The stirring paddle (421) is provided in the premixing bin (411). The feeding channel (412) is provided between the premixing bin (411) and the mixing chamber (110). The feeding auger (431) is provided in the feeding channel (412).

10. The mixing and stirring equipment according to claim 1, characterized in that: A first feeding port (120) is provided on the front side wall or the rear side wall of the mixing cylinder body (100). A second feeding port (130) and a mixing degassing port (140) are provided at the upper end of the mixing cylinder body (100). Two discharge ports (150) arranged left and right are provided at the bottom of the mixing cylinder body (100).

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