CN219149832U - Coaxial self-priming stirrer - Google Patents
Coaxial self-priming stirrer Download PDFInfo
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- CN219149832U CN219149832U CN202223038979.0U CN202223038979U CN219149832U CN 219149832 U CN219149832 U CN 219149832U CN 202223038979 U CN202223038979 U CN 202223038979U CN 219149832 U CN219149832 U CN 219149832U
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Abstract
The application discloses a coaxial self-priming stirrer, which comprises an inner shaft, a hollow outer shaft, a sealing bearing, a driving mechanism, a self-priming stirring paddle and a lower auxiliary stirring paddle; the inner shaft is inserted into the hollow outer shaft to form a transmission channel, and the sealing bearing is used for sealing the lower end of the transmission channel; the hollow outer shaft is provided with an air inlet hole; the self-priming stirring paddle is arranged on the hollow outer shaft, and the air outlet hole of the self-priming stirring paddle is communicated with the transmission channel; the lower auxiliary stirring paddle is arranged on the inner shaft; guide vanes are arranged in the transmission channel; the driving mechanism is used for driving the inner shaft and the hollow outer shaft to rotate so that the rotation directions of the inner shaft and the hollow outer shaft are opposite. The current condition that reactant and pivot synchronous rotation gradually formed laminar flow is solved to this application, stabilizes venthole department dynamic pressure head, improves from inhaling the effect, improves stirring effect simultaneously.
Description
Technical Field
The utility model relates to the field of stirring, in particular to a coaxial self-priming stirrer.
Background
The self-priming stirrer does not need to carry out gas delivery additionally, and the stirrer rotates in the liquid to generate negative pressure so as to suck the gas outside the liquid level.
Self-priming agitators are commonly used in self-priming reactors, which rotate at a fixed rotational speed to displace liquid in the vicinity thereof and to cause vigorous movement of the liquid such that the kinetic energy around the self-priming agitator increases and the potential energy decreases, thereby creating a low pressure in the center of the self-priming agitator. Under the action of the pressure difference driving force, the gas sucked into the upper space of the liquid through the hollow self-priming stirring shaft is crushed and dispersed by the self-priming stirrer and fully contacted with the liquid, so that the gas-liquid reaction is promoted.
The existing self-priming stirrer uses a stirring shaft to drive one or more blades to synchronously rotate along with the shaft for stirring, for example, patent documents with publication numbers of CN201366323Y, CN2382462Y and CN 2354649Y.
The existing self-priming stirrer is generally designed into multi-layer blade single-shaft unidirectional rotation, reactants can be generated in the reactor along with the unidirectional rotation laminar flow of the self-priming stirrer to a certain extent in the stirring process, the relative liquid speed at the air outlet of the self-priming stirring paddle is reduced, the air outlet cannot be stably low in pressure, the self-priming effect is poor, and the air suction rate is reduced. In addition, the reactants cannot be fully mixed due to synchronous rotation, so that the carrying capacity of bubbles at the gas outlet is influenced, the gas suction rate is reduced, and the liquid level easily forms vortex-like concave to influence the stirring effect.
Aiming at the problems, the improvement scheme I of the prior art is as follows: the lower end of the self-priming stirrer is provided with an upward lifting stirring paddle, the relative liquid speed at the air outlet hole is increased by generating upward axial flow to a certain extent, the air bubble transportation capacity at the air outlet hole is also increased, the self-priming effect is increased to a certain extent, and the whole self-priming effect is still influenced by laminar flow.
The improvement scheme II of the prior art: the baffle is added on the inner side wall of the reactor, so that part of laminar flow is reduced, axial flow is increased, and a certain self-priming effect is increased, but the baffle can only reduce peripheral laminar flow, and the influence of the laminar flow around the stirrer is relatively less, and the self-priming effect is still influenced.
Disclosure of Invention
The present utility model addresses at least one of the above-mentioned problems by providing a coaxial self-priming mixer.
The technical scheme adopted by the utility model is as follows:
a coaxial self-priming stirrer comprises an inner shaft, a hollow outer shaft, a sealing bearing, a driving mechanism, a self-priming stirring paddle and a lower auxiliary stirring paddle;
the inner shaft is inserted into the hollow outer shaft, the lower end of the inner shaft penetrates out of the hollow outer shaft, a transmission channel is formed between the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft, and the sealing bearing is arranged at the lower end of the hollow outer shaft and is respectively matched with the inner shaft and the hollow outer shaft to seal the lower end of the transmission channel;
the hollow outer shaft is provided with an air inlet hole, the air inlet hole is communicated with the transmission channel, and when the hollow outer shaft works, the air inlet hole is positioned above the liquid level;
the self-priming stirring paddle is arranged on the hollow outer shaft, and an air outlet hole on the self-priming stirring paddle is communicated with the transmission channel;
the lower auxiliary stirring paddle is arranged on the inner shaft and is positioned below the hollow outer shaft;
at least one of the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft is provided with a guide blade, and the guide blade is positioned in the transmission channel and above the self-priming stirring paddle and is used for promoting the airflow in the transmission channel to flow;
the driving mechanism is used for driving the inner shaft and the hollow outer shaft to rotate so that the rotation directions of the inner shaft and the hollow outer shaft are opposite.
The driving force of gas suction is the pressure difference between the top space and the air outlet hole on the self-suction stirring paddle, and the dynamic pressure of the air outlet hole of the self-suction stirring paddle is greatly influenced by the density of the fluid in the impeller area, so that if the gas near the self-suction stirring paddle can be timely driven away, the density of the self-suction stirring paddle area is improved, and the gas suction is facilitated.
According to the self-priming stirring paddle, the coaxial bidirectional paddles are combined, so that the rotation directions of the inner shaft and the hollow outer shaft are opposite, the problem that reactants gradually rotate in the same direction along with the stirring shaft to form laminar flow is solved, the dynamic pressure of the air outlet holes of the self-priming stirring paddle is increased, the local turbulence is enhanced, the gas near the self-priming stirring paddle is timely driven away, the self-priming capability is remarkably improved, and the reactants are more fully mixed; the annular transmission channel is internally provided with the guide vane, so that the reduction of pressure difference generated by uneven internal fluid flow can be particularly reduced, the movement of gas in the transmission channel is promoted, the gas is reliably conveyed to the self-priming stirring paddle, and the self-priming effect is improved.
During operation, the specific flow direction of the air circuit is as follows: the air inlet hole enters the transmission channel and then enters the self-priming stirring paddle, and finally enters the reaction liquid through the outlet gas.
In operation, the guide vane rotates to push the air flow in the transmission channel to flow downwards.
In one embodiment of the present utility model, the driving mechanism includes two driving motors, one of which is used for driving the inner shaft to rotate, and the other is used for driving the hollow outer shaft to rotate.
In one embodiment of the utility model, the driving mechanism comprises a gear box and a driving motor, wherein a gear set is installed in the gear box, the gear set comprises a first conical gear fixed with an output shaft of the driving motor, a second conical gear rotatably installed on the gear box and coaxially arranged with the first conical gear, and a transmission gear rotatably installed on the gear box and simultaneously meshed with the first conical gear and the second conical gear; and an output shaft of the driving motor is connected with the inner shaft, and the second bevel gear is connected with the hollow outer shaft.
In one embodiment of the present utility model, an air suction impeller is mounted on the hollow outer shaft, and the mounting position of the air suction impeller corresponds to the air inlet hole.
Providing an intake impeller can increase intake efficiency. The combination of the air inlet impeller, the guide vane and the self-priming stirring paddle promotes the fluid in the annular channel to spirally descend, and a stable and efficient flow field is formed in the annular channel, thereby improving the self-priming effect.
In one embodiment of the present utility model, the mounting portion of the suction impeller is provided with a reinforcing structure.
The rigidity of the hollow outer shaft can be ensured by the reinforcing structure.
In one embodiment of the utility model, an upper auxiliary stirring paddle is mounted on the hollow outer shaft.
In one embodiment of the utility model, the guide vane is arranged on the inner shaft.
In one embodiment of the utility model, the inner shaft is a solid shaft.
The application also discloses another coaxial self-priming stirrer which comprises an inner shaft, a hollow outer shaft, a sealing bearing, a driving mechanism, a self-priming stirring tube and a lower auxiliary stirring paddle;
the inner shaft is inserted into the hollow outer shaft, the lower end of the inner shaft penetrates out of the hollow outer shaft, a transmission channel is formed between the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft, and the sealing bearing is arranged at the lower end of the hollow outer shaft and is respectively matched with the inner shaft and the hollow outer shaft to seal the lower end of the transmission channel;
the hollow outer shaft is provided with an air inlet hole, the air inlet hole is communicated with the transmission channel, and when the hollow outer shaft works, the air inlet hole is positioned above the liquid level;
the self-priming stirring pipe is arranged on the hollow outer shaft, and one end of the self-priming stirring pipe is communicated with the transmission channel;
the lower auxiliary stirring paddle is arranged on the inner shaft and is positioned below the hollow outer shaft;
the driving mechanism is used for driving the inner shaft and the hollow outer shaft to rotate so that the rotation directions of the inner shaft and the hollow outer shaft are opposite.
The beneficial effects of the utility model are as follows: the device solves the problem that the reactant and the rotating shaft gradually and synchronously rotate to form laminar flow, stabilizes the dynamic pressure head at the air outlet, improves the self-priming effect, and simultaneously improves the stirring effect.
Drawings
FIG. 1 is a schematic illustration of a coaxial self-priming stirrer as applied to a reactor;
FIG. 2 is a schematic view of the coaxial self-priming mixer after removal of the drive mechanism;
FIG. 3 is a schematic illustration of the hollow outer shaft of FIG. 2 separated from the inner shaft;
fig. 4 is a partial schematic view of the drive mechanism.
The reference numerals in the drawings are as follows:
1. a driving mechanism; 11. a driving motor; 12. an output shaft; 13. a first bevel gear; 14. a second bevel gear; 15. a transmission gear; 2. an inner shaft; 21. a guide vane; 3. a hollow outer shaft; 4. self-priming stirring paddles; 41. an air outlet hole; 5. a lower auxiliary stirring paddle; 6. a transmission channel; 7. an air suction impeller; 8. the upper layer assists the stirring paddle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the embodiments described are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a coaxial self-priming mixer comprises an inner shaft 2, a hollow outer shaft 3, a sealing bearing (not shown in the drawings), a driving mechanism 1, a self-priming mixing paddle 4 and a lower auxiliary mixing paddle 5;
the inner shaft 2 is inserted into the hollow outer shaft 3, the lower end of the inner shaft 2 penetrates out of the hollow outer shaft 3, a transmission channel 6 is formed between the outer side wall of the inner shaft 2 and the inner side wall of the hollow outer shaft 3, a sealing bearing is arranged at the lower end of the hollow outer shaft 3 and is respectively matched with the inner shaft 2 and the hollow outer shaft 3, and the lower end of the transmission channel 6 is sealed;
the hollow outer shaft 3 is provided with an air inlet hole (not marked in the figure), the air inlet hole is communicated with the transmission channel 6, and the air inlet hole is positioned above the liquid level when in operation;
the self-priming stirring paddle 4 is arranged on the hollow outer shaft 3, and an air outlet hole 41 on the self-priming stirring paddle 4 is communicated with the transmission channel 6;
the lower auxiliary stirring paddle 5 is arranged on the inner shaft 2 and is positioned below the hollow outer shaft 3;
at least one of the outer side wall of the inner shaft 2 and the inner side wall of the hollow outer shaft 3 is provided with a guide vane 21, and the guide vane 21 is positioned in the transmission channel 6 and above the self-priming stirring paddle 4 and is used for promoting the airflow in the transmission channel 6 to flow;
the driving mechanism 1 is used for driving the inner shaft 2 and the hollow outer shaft 3 to rotate so that the rotation directions of the inner shaft 2 and the hollow outer shaft 3 are opposite.
The driving force of gas suction is the pressure difference between the top space and the air outlet holes 41 on the self-suction stirring paddle 4, the dynamic pressure of the air outlet holes 41 of the self-suction stirring paddle 4 is greatly influenced by the density of the fluid in the impeller area, and if the gas near the self-suction stirring paddle 4 can be timely driven away, the improvement of the density of the area of the self-suction stirring paddle 4 is beneficial to the suction of the gas.
According to the self-priming stirring paddle, the coaxial bidirectional paddles are combined, so that the rotation directions of the inner shaft 2 and the hollow outer shaft 3 are opposite, the problem that reactants gradually rotate in the same direction along with the stirring shaft to form laminar flow is solved, the dynamic pressure of the air outlet holes 41 of the self-priming stirring paddle 4 is increased, the local turbulence is enhanced, the gas near the self-priming stirring paddle 4 is timely driven away, the self-priming capability is remarkably improved, and the reactants are more fully mixed; the guide vanes 21 are provided in the annular transfer channel 6, which can particularly reduce the pressure difference caused by uneven internal fluid flow, promote the movement of gas in the transfer channel 6, reliably transfer the gas to the self-priming stirring paddle 4, and improve the self-priming effect.
During operation, the specific flow direction of the air circuit is as follows: the inlet holes enter the transmission channel 6 and then enter the self-priming stirring paddle 4, and finally enter the reaction liquid through the outlet gas.
In operation of the present application, the guide vanes 21 are rotated to push the air flow in the transfer passage 6 downward.
As shown in fig. 4, in the present embodiment, the driving mechanism 1 includes a gear box (not shown in the drawing) and a driving motor 11, a gear set is installed in the gear box, the gear set includes a first bevel gear 13 fixed to an output shaft 12 of the driving motor 11, a second bevel gear 14 rotatably installed on the gear box and disposed coaxially with the first bevel gear 13, and a transmission gear 15 rotatably installed on the gear box and engaged with both the first bevel gear 13 and the second bevel gear 14; an output shaft 12 of the drive motor 11 is connected to the inner shaft 2 and a second bevel gear 14 is connected to the hollow outer shaft 3.
In other embodiments, the drive mechanism 1 may comprise two drive motors 11, one drive motor 11 for driving the rotation of the inner shaft 2 and the other drive motor 11 for driving the rotation of the hollow outer shaft 3.
As shown in fig. 1, 2 and 3, in the present embodiment, the hollow outer shaft 3 is mounted with an air suction impeller 7, and the mounting position of the air suction impeller 7 corresponds to the air intake hole. Providing an intake impeller can increase intake efficiency. The combination of the air inlet impeller, the guide vane 21 and the self-priming stirring paddle 4 promotes the fluid in the annular channel to spirally descend, and a stable and efficient flow field is formed in the annular channel, so that the self-priming effect is improved.
In this embodiment, the suction impeller 7 is provided with a reinforcing structure at the mounting position. The rigidity of the hollow outer shaft 3 can be ensured by the reinforcing structure.
As shown in fig. 1, 2 and 3, in this embodiment, an upper auxiliary paddle 8 is mounted on the hollow outer shaft 3.
As shown in fig. 3, for convenience of processing, it is preferable that in the present embodiment, the guide vane 21 is provided on the inner shaft 2.
In this embodiment, the inner shaft 2 is a solid shaft.
In other embodiments, the self-priming stirring paddle 4 may be replaced by a self-priming stirring tube, where one end of the self-priming stirring tube is disposed on the hollow outer shaft 3 and communicates with the delivery channel 6, and the other end extends outward. At this time, the hollow outer shaft 3 may not be provided with the upper auxiliary stirring paddle 8, and the overall flow shape of the reaction liquid is affected by the lower auxiliary stirring paddle 5, and only the self-priming stirring tube reversely stirs with respect to the lower auxiliary stirring paddle.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover all equivalent structures as modifications within the scope of the utility model, either directly or indirectly, as may be contemplated by the present utility model.
Claims (9)
1. The coaxial self-priming stirrer is characterized by comprising an inner shaft, a hollow outer shaft, a sealing bearing, a driving mechanism, a self-priming stirring paddle and a lower auxiliary stirring paddle;
the inner shaft is inserted into the hollow outer shaft, the lower end of the inner shaft penetrates out of the hollow outer shaft, a transmission channel is formed between the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft, and the sealing bearing is arranged at the lower end of the hollow outer shaft and is respectively matched with the inner shaft and the hollow outer shaft to seal the lower end of the transmission channel;
the hollow outer shaft is provided with an air inlet hole, the air inlet hole is communicated with the transmission channel, and when the hollow outer shaft works, the air inlet hole is positioned above the liquid level;
the self-priming stirring paddle is arranged on the hollow outer shaft, and an air outlet hole on the self-priming stirring paddle is communicated with the transmission channel;
the lower auxiliary stirring paddle is arranged on the inner shaft and is positioned below the hollow outer shaft;
at least one of the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft is provided with a guide blade, and the guide blade is positioned in the transmission channel and above the self-priming stirring paddle and is used for promoting airflow in the transmission channel;
the driving mechanism is used for driving the inner shaft and the hollow outer shaft to rotate so that the rotation directions of the inner shaft and the hollow outer shaft are opposite.
2. The coaxial self-priming whisk of claim 1, wherein the drive mechanism comprises two drive motors, one for driving rotation of the inner shaft and the other for driving rotation of the hollow outer shaft.
3. The coaxial self-priming mixer of claim 1, wherein said drive mechanism comprises a gear box and a drive motor, wherein a gear set is mounted in said gear box, said gear set comprising a first bevel gear fixed to an output shaft of the drive motor, a second bevel gear rotatably mounted on the gear box and coaxially disposed with said first bevel gear, and a transmission gear rotatably mounted on the gear box and simultaneously meshed with the first bevel gear and the second bevel gear; and an output shaft of the driving motor is connected with the inner shaft, and the second bevel gear is connected with the hollow outer shaft.
4. The coaxial self-priming mixer according to claim 1, wherein said hollow outer shaft is provided with a suction impeller, said suction impeller being mounted in a position corresponding to the air inlet hole.
5. The coaxial self-priming mixer of claim 4, wherein said suction impeller is provided with a stiffening structure at the mounting location.
6. The coaxial self-priming mixer of claim 1, wherein an upper auxiliary paddle is mounted on said hollow outer shaft.
7. The coaxial self-priming whisk according to claim 1, wherein said guide vane is provided on the inner shaft.
8. The coaxial self-priming mixer according to claim 1, wherein said inner shaft is a solid shaft.
9. The coaxial self-priming stirrer is characterized by comprising an inner shaft, a hollow outer shaft, a sealing bearing, a driving mechanism, a self-priming stirring pipe and a lower auxiliary stirring paddle;
the inner shaft is inserted into the hollow outer shaft, the lower end of the inner shaft penetrates out of the hollow outer shaft, a transmission channel is formed between the outer side wall of the inner shaft and the inner side wall of the hollow outer shaft, and the sealing bearing is arranged at the lower end of the hollow outer shaft and is respectively matched with the inner shaft and the hollow outer shaft to seal the lower end of the transmission channel;
the hollow outer shaft is provided with an air inlet hole, the air inlet hole is communicated with the transmission channel, and when the hollow outer shaft works, the air inlet hole is positioned above the liquid level;
the self-priming stirring pipe is arranged on the hollow outer shaft, and one end of the self-priming stirring pipe is communicated with the transmission channel;
the lower auxiliary stirring paddle is arranged on the inner shaft and is positioned below the hollow outer shaft;
the driving mechanism is used for driving the inner shaft and the hollow outer shaft to rotate so that the rotation directions of the inner shaft and the hollow outer shaft are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223038979.0U CN219149832U (en) | 2022-11-14 | 2022-11-14 | Coaxial self-priming stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223038979.0U CN219149832U (en) | 2022-11-14 | 2022-11-14 | Coaxial self-priming stirrer |
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| Publication Number | Publication Date |
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| CN219149832U true CN219149832U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223038979.0U Active CN219149832U (en) | 2022-11-14 | 2022-11-14 | Coaxial self-priming stirrer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772013A (en) * | 2019-03-26 | 2019-05-21 | 威孔过滤科技（苏州）有限公司 | A kind of New Type of Filter Equipment special blender |
-
2022
- 2022-11-14 CN CN202223038979.0U patent/CN219149832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772013A (en) * | 2019-03-26 | 2019-05-21 | 威孔过滤科技（苏州）有限公司 | A kind of New Type of Filter Equipment special blender |
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