CN214973801U - Variable-pitch granulation stirrer - Google Patents
Variable-pitch granulation stirrer Download PDFInfo
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- CN214973801U CN214973801U CN202121448955.5U CN202121448955U CN214973801U CN 214973801 U CN214973801 U CN 214973801U CN 202121448955 U CN202121448955 U CN 202121448955U CN 214973801 U CN214973801 U CN 214973801U
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Abstract
The utility model provides a variable pitch granulation agitator, including granulation stirred tank and (mixing) shaft, granulation stirred tank includes straight section of thick bamboo portion and toper portion, the toper portion is established in straight section of thick bamboo portion bottom, the (mixing) shaft rotates and sets up in granulation stirred tank's inner chamber, the toper portion bottom is provided with the feed opening, a plurality of enhancement crosspiece has evenly been laid on the (mixing) shaft, the both ends of strengthening the crosspiece all are equipped with the helical band, the bottom of (mixing) shaft extends to in the inner chamber of toper portion bottom, the shaft part that the (mixing) shaft is located in the toper portion inner chamber is inverted frustum form or chamfered column form, the helical pitch of the helical band in the toper portion inner chamber diminishes gradually along the ejection of compact direction; the (mixing) shaft that is radius circular truncated cone type extends into near feed opening top of toper portion for the axial segment of (mixing) shaft is more downward, and its occupation space just is littleer, plays the effect that reduces the occupation space of axial segment near the feed opening, and the helical ribbon that reduces gradually along ejection of compact direction helical pitch can play the effect that effectively promotes the material, also plays the effect of further avoiding the material caking, improves product quality.
Description
Technical Field
The utility model relates to a granulation stirred tank technical field, concretely relates to variable pitch granulation agitator.
Background
The production of the lithium battery cathode material needs to pass through a high-temperature coating granulation link, the main process of the link is to repeatedly stir and mix graphene powder and asphalt powder under a high-temperature state, so that the asphalt powder is melted and coated on the outer surface of graphene particles to prepare the lithium battery cathode material, the high-temperature coating granulation link is mainly carried out in a granulation stirring kettle, the temperature in the kettle generally can reach 700 ℃ and above, in the actual production process, in order to facilitate discharging, the bottom of the granulation stirring kettle is generally designed into an inverted cone shape, namely a necking design (the bottommost part of a cone part is a discharging port matched with the hole diameter of a flange plate of a discharging valve), the design mode ensures that the space near the discharging port is small, a cavity which cannot be touched by a stirring shaft can exist in the process of stirring the material, and the asphalt is easy to be bonded into blocks under the condition of no stirring due to large viscosity of the asphalt under the high-temperature state, this makes the cavity near the feed opening prone to cause the problem of biological material agglomeration, which affects the product quality.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a variable pitch granulation agitator to mention following technical problem in solving the background art: the material in the cavity near the feed opening is easy to agglomerate to influence the product quality.
The technical scheme of the utility model is realized like this:
a variable-pitch granulating stirrer comprises a granulating stirring kettle and a stirring shaft, wherein the granulating stirring kettle comprises a straight cylinder part and a conical part, the conical part is arranged at the bottom of the straight cylinder part, the stirring shaft is rotatably arranged in an inner cavity of the granulating stirring kettle, a feed opening is formed in the bottom end of the conical part, a plurality of reinforcing crosspieces are uniformly distributed on the stirring shaft, spiral belts are arranged at two ends of each reinforcing crosspiece, the bottom of the stirring shaft extends into the inner cavity of the bottom of the conical part, a shaft section of the stirring shaft, which is positioned in the inner cavity of the conical part, is in an inverted circular truncated cone shape or an inverted prism shape, the effect of reducing the occupied space of the shaft section near the feed opening can be achieved, so that enough feed space is ensured, the stirring shaft extends into the inner cavity of the conical part, and the purpose of stirring and mixing the materials near the feed opening can be achieved through the reinforcing crosspiece and the spiral belts at the bottom of the stirring shaft, in order to play the effect that reduces near feed opening can't be stirred the space to improve the mixed sufficient rate when granulation stirred tank mixes the stirring, and then play the effect of avoiding near the material of feed opening to take place the caking problem, improve product quality, be in the toper portion inner chamber the helical pitch of spiral area diminishes along ejection of compact direction gradually, at the stirring in-process of reality, the spiral area can play the effect that effectively promotes the material, improves the stirring mixing efficiency of material, also can play the effect of further avoiding the material caking.
Furthermore, on any longitudinal section passing through the central axis of the stirring shaft, the included angle between a generatrix on the shaft section of the stirring shaft in the shape of an inverted frustum and a generatrix on the shaft section of the stirring shaft positioned in the straight cylinder part is 1-5 degrees.
Further, the maximum lead of the helical ribbon within the lumen of the conical section is four fifths of the height of the conical section.
Further, the helical band within the taper lumen has a minimum lead of one fifth of the height of the taper.
Further, in the discharging direction, namely the direction from top to bottom, the width of the spiral belt in the inner cavity of the conical part is gradually reduced, and the minimum value of the width of the spiral belt is 3cm-12 cm.
Furthermore, the radius of the plurality of reinforcing crosspieces is gradually reduced along the discharging direction, namely along the direction from top to bottom.
Furthermore, the radius of the reinforcing crosspiece positioned at the bottommost part of the stirring shaft is 1.3cm-1.8 cm.
Further, the distance between the bottom of the stirring shaft and the feed opening is 15cm-30 cm.
Furthermore, a scraper is welded at the bottom of the stirring shaft, and the distance between the side edge of the scraper and the inner cavity wall of the conical part is 0.5cm-2 cm.
Furthermore, the bottom of the scraper extends out of the feed opening at the bottom of the conical part.
The utility model has the advantages that: the stirring shaft extends into the upper part of the lower part of the conical part, the shaft end of the stirring shaft is designed into an inverted round platform shape, the more the shaft section of the stirring shaft is downward, the smaller the occupied space is, the effect of reducing the occupied space of the shaft section near the lower part is achieved, the enough lower space is ensured for the negative ion material, the spiral belt with the gradually reduced lead along the discharging direction can effectively improve the material stirring and mixing efficiency, the effect of further avoiding the material caking is achieved, the reinforcing crosspiece and the spiral belt which extend to the bottom of the stirring shaft near the lower part achieve the purpose of stirring and mixing the material near the lower part, the effect of reducing the space which can not be stirred near the lower part is achieved, the mixing and charging rate of the granulating and stirring kettle is improved, and the effect of avoiding the caking problem of the material near the lower part caused by the incapability of stirring is achieved, improve product quality, the scraper blade can play the effect of the material of stirring feed opening department.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of a variable pitch granulation agitator of the present invention;
FIG. 2 is a schematic view of the structure of the stirring shaft of the present invention;
FIG. 3 is a schematic structural view of a shaft segment of the stirring shaft at the bottom of the inner cavity of the conical part;
FIG. 4 is a schematic projection of the helical line on a developed view of the conical portion when the lead of the helical band in the conical portion is the same as that of the straight barrel portion;
fig. 5 is a schematic projection view of the spiral line on the development view of the conical portion when the lead of the spiral band in the conical portion becomes gradually smaller in the discharge direction.
The attached drawings are as follows: 1. a stirring shaft; 11. a reinforcing rail; 12. a helical band; 13. a squeegee; 2. a straight tube portion; 3. a tapered portion; 31. and (4) a feed opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The specific embodiment is as follows:
referring to fig. 1-5, a variable pitch granulating stirrer comprises a granulating stirring kettle and a stirring shaft 1, wherein the granulating stirring kettle comprises a straight cylinder part 2 and a tapered part 3, the tapered part 3 is arranged at the bottom of the straight cylinder part 2, the stirring shaft 1 is rotatably arranged in an inner cavity of the granulating stirring kettle, a discharge port 31 is arranged at the bottom end of the tapered part 3, a plurality of reinforcing crosspieces 11 are uniformly distributed on the stirring shaft 1, specifically, the reinforcing crosspieces 11 are uniformly distributed on a shaft section of the stirring shaft 1 in the inner cavity of the granulating stirring kettle, particularly, the reinforcing crosspieces 11 are also fixedly arranged at the bottom of the stirring shaft 1, spiral belts 12 are respectively arranged at two ends of the reinforcing crosspieces 11, namely, the spiral belts 1 are respectively fixed at two ends of the reinforcing crosspieces 11, wherein, any reinforcing crosspiece 11 is fixedly arranged on the stirring shaft 1 in a symmetrical manner, the bottom of the stirring shaft 1 extends into the inner cavity at the bottom of the tapered part 3, the shaft section of the stirring shaft 1 positioned in the inner cavity of the conical part 3 is in an inverted truncated cone shape or an inverted prism shape, the shaft section near the feed opening 31 at the bottom of the conical part 3 is designed into an inverted truncated cone shape or a prism shape, so that the occupied space of the shaft section near the feed opening 31 can be reduced, a sufficient feeding space is ensured, the stirring shaft 1 extends into the inner cavity of the conical part 3, the purpose of stirring and mixing the materials near the feed opening 31 can be realized through the reinforcing crosspiece 11 and the spiral belt 12 at the bottom of the stirring shaft 1, the effect of reducing the space which cannot be stirred near the feed opening 31 is realized, the mixing and charging rate of the granulating and stirring kettle is improved, the effect of avoiding the caking problem of the materials near the feed opening 31 is realized, the product quality is improved, the lead of the spiral belt 12 in the inner cavity of the conical part 3 is gradually reduced along the discharging direction, since the radius of the inner wall space of the conical part 3 is gradually reduced towards the discharging direction, the radius of the spiral belt 12 is also correspondingly reduced, as shown in fig. 4, in the development view of the conical part 3, if the pitch of the spiral belt 12 is still the fixed pitch when being located in the straight cylinder part, because the lead of the spiral belt 12 of the straight cylinder part 2 is greater than the height H of the conical part, the spiral line a' of the spiral belt 12 located in the conical part 3 is in a state of being close to being parallel to the generatrix a of the conical part 3 on the development view, so, during the rotation of the stirring shaft 1, the spiral belt 12 only plays a role of scraping and stirring materials, but cannot play a role of lifting the materials to circularly stir the materials well, and when the lead of the spiral belt 12 located in the conical part 3 is designed to be gradually reduced along the discharging direction, as shown in fig. 5, make helix A of helical ribbon 12 realize the crossing state with generating line a on the expansion picture of toper portion 3, so, at actual stirring in-process, helical ribbon 12 just can play the effect of effectively promoting the material, improves the stirring mixing efficiency of material, also plays the effect of further avoiding the material caking.
Preferably, referring to fig. 3, on any longitudinal section passing through the central axis of the stirring shaft 1, the included angle β between the generatrix b on the shaft section of the stirring shaft 1 in the shape of the inverted frustum and the generatrix c on the shaft section of the stirring shaft located in the straight cylinder part is 1 ° to 5 °, and exceeds 5 °, the strength of the end part of the shaft section is reduced, the structural strength requirement of the stirring shaft cannot be well met, the structural occupancy degree of the stirring shaft is less than 1 °, the spatial occupancy degree of the stirring shaft is not obviously changed, and preferably, the embodiment is preferably 3 °.
Preferably, referring to fig. 2 or 5, the maximum lead of the helical bands 12 in the cavity of the conical portion 3 is four fifths of the height H of the conical portion, wherein the maximum lead of the helical bands 12 at the top of the conical portion 3 facilitates transitional engagement with the helical bands 12 at the bottom of the straight barrel portion 2.
Preferably, the minimum lead of the helical ribbon 12 in the cavity of the conical portion 3 is one fifth of the height H of the conical portion, and since the material in the vicinity of the feed opening 31 has substantially completed the coating operation, the material does not need to undergo excessive lifting and mixing operations, but only the requirement of adequate stirring to avoid agglomeration is satisfied.
Preferably, the width of the spiral belt 12 in the inner cavity of the conical part 3 is gradually reduced along the discharging direction, i.e. from top to bottom, and the minimum value of the width of the spiral belt 12 is 3cm-12cm, preferably 8cm, which plays a role in reducing the occupied space of the spiral belt 12 near the discharging opening 31.
Preferably, the radius of the reinforcing bars 11 is gradually reduced along the discharging direction, i.e. from top to bottom, which serves to reduce the space occupied by the reinforcing bars 11 near the discharging opening.
Preferably, the radius of the reinforcing crosspiece 11 located at the lowermost part of the stirring shaft 1 is between 1.3cm and 1.8cm, preferably 1.5cm in this embodiment.
Preferably, the distance between the bottom of the stirring shaft 1 and the feed opening 31 is 15cm-30cm, and the distance is preferably 20cm in the present embodiment, and in order to ensure that the conical part has enough feed space, the bottom of the stirring shaft is designed 15-30 cm, and preferably 20cm above the feed opening in the present embodiment.
Preferably, on the basis of designing the bottom of (mixing) shaft above feed opening 31, in order to solve the problem that the feed opening is blocked up because of the caking that can not obtain the intensive mixing at feed opening 31 department of material, the welding of (mixing) shaft 1 bottom has scraper blade 13, drive scraper blade 13 through (mixing) shaft 1 and rotate, and then realize the purpose of the material of stirring feed opening 31 department, in order to prevent the material because of the problem emergence of the caking that can not obtain the stirring, the distance between the side of scraper blade 13 and the 3 inner chamber walls of toper portion is 0.5cm-2cm, in the in-process of scraper blade 13 stirring scraping the material, the clearance between scraper blade 13 and the 3 inner walls of toper portion can play the effect of extrusion granulation, improve the granularity uniformity of negative pole material granule.
Preferably, the bottom of the scraper 13 extends out of the feed opening 31 at the bottom of the cone, in particular, into the inner cavity of a ball valve (not shown) mounted below the feed opening 31, to ensure the sufficiency of stirring.
The beneficial effects of this embodiment: the stirring shaft extends into the position near the feed opening of the conical part, the shaft end of the stirring shaft is designed into an inverted circular truncated cone shape, the occupied space of the shaft section of the stirring shaft is smaller when the shaft section is downward, the occupied space of the shaft section near the feed opening is reduced, the negative ion material is ensured to have enough feed space, the spiral belt with the gradually-reduced lead along the discharging direction can play a role in effectively improving the material, so that the stirring and mixing efficiency of the material is improved, the material caking is further avoided, the reinforcing crosspiece and the spiral belt which extend to the bottom of the stirring shaft near the feed opening realize the purpose of stirring and mixing the material near the feed opening, the space which cannot be stirred near the feed opening is reduced, the mixing and charging rate of the granulating and stirring kettle during mixing is improved, and the caking problem of the material near the feed opening caused by the incapability of stirring is avoided, improve product quality, the scraper blade can play the effect of the material of stirring feed opening department.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", "element i", "element ii" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features indicated. Thus, features defined as "first", "second", "element i", "element ii" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A variable-pitch granulating stirrer comprises a granulating stirring kettle and a stirring shaft (1), wherein the granulating stirring kettle comprises a straight cylinder part (2) and a conical part (3), the conical part (3) is arranged at the bottom of the straight cylinder part (2), the stirring shaft (1) is rotationally arranged in the inner cavity of the granulating and stirring kettle, the bottom end of the conical part (3) is provided with a feed opening (31), it is characterized in that a plurality of strengthening crosspieces (11) are uniformly distributed on the stirring shaft (1), spiral belts (12) are arranged at two end parts of the reinforcing crosspiece (11), the bottom of the stirring shaft (1) extends into an inner cavity at the bottom of the conical part (3), the shaft section of the stirring shaft (1) in the inner cavity of the conical part (3) is in an inverted frustum shape or an inverted prism shape, and the lead of the spiral belt (12) in the inner cavity of the conical part (3) is gradually reduced along the discharging direction.
2. The variable-pitch granulating stirrer according to claim 1, wherein on any longitudinal section passing through the central axis of the stirring shaft (1), the included angle between the generatrix on the shaft section of the stirring shaft (1) in the shape of an inverted frustum and the generatrix on the shaft section of the stirring shaft (1) positioned in the straight cylinder part (2) is 1-5 °.
3. A variable pitch granulator stirrer according to claim 1 or 2, wherein the maximum value of the lead of the helical ribbon (12) in the cavity of the cone (3) is four fifths of the height of the cone (3).
4. A variable pitch granulator stirrer according to claim 3, wherein the minimum lead of the helical ribbon (12) in the cavity of the cone (3) is one fifth of the height of the cone (3).
5. A variable pitch granulator mixer according to claim 4, wherein the width of the helical band (12) in the internal cavity of the cone (3) is gradually reduced in the discharge direction, and the minimum value of the width of the helical band (12) is 3cm-12 cm.
6. A variable-pitch granulator mixer according to claim 1 or 2, wherein the radius of the reinforcing crosspieces (11) decreases in the direction of discharge.
7. A variable pitch granulator mixer according to claim 6, wherein the radius of the reinforcement crosspiece (11) located at the very bottom of the mixer shaft (1) is between 1.3cm and 1.8 cm.
8. A variable pitch granulator mixer according to claim 1 or 2, wherein the distance between the bottom of the mixer shaft (1) and the feed opening (31) is 15cm to 30 cm.
9. A variable-pitch granulating agitator as claimed in claim 8, wherein a scraper (13) is welded to the bottom of the agitator shaft (1), and the distance between the side edge of the scraper (13) and the inner cavity wall of the conical portion (3) is 0.5cm-2 cm.
10. A variable-pitch granulator mixer according to claim 9, wherein the bottom of the scraper (13) extends beyond the discharge opening (31) at the bottom of the cone (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121448955.5U CN214973801U (en) | 2021-06-28 | 2021-06-28 | Variable-pitch granulation stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121448955.5U CN214973801U (en) | 2021-06-28 | 2021-06-28 | Variable-pitch granulation stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214973801U true CN214973801U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121448955.5U Active CN214973801U (en) | 2021-06-28 | 2021-06-28 | Variable-pitch granulation stirrer |
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| Country | Link |
|---|---|
| CN (1) | CN214973801U (en) |
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2021
- 2021-06-28 CN CN202121448955.5U patent/CN214973801U/en active Active
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