CN212040435U

CN212040435U - Hydrotalcite crystallization reaction kettle with stirrer automatically stopping during overload

Info

Publication number: CN212040435U
Application number: CN202020575382.1U
Authority: CN
Inventors: 童孟良; 阳小宇; 唐淑贞
Original assignee: Hunan Vocational College of Chemical Technology
Current assignee: Hunan Vocational College of Chemical Technology
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-12-01
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a hydrotalcite crystallization reaction kettle with a stirrer automatically stopping when being overloaded, which comprises a reaction kettle body, a stirrer gear horizontally arranged at the top of the reaction kettle body, a motor with a motor gear, a frame, a fixed frame and a power supply seat with a power switch; the motor is fixed in the frame, the frame is slidably connected and installed on the fixed frame through a sliding component, the power supply seat is fixed on the fixed frame in front of the frame, and the motor gear is meshed with the stirrer gear; an elastic reset component which enables the rack to bear force along the sliding direction is arranged between the rack and the fixed frame; a switch breaking component which can break the circuit of the power switch is arranged between the frame and the power seat. The advantages are that: 1. the method can realize automatic power-off and stirring stopping at the optimal time of hydrotalcite crystallization reaction, thereby not only ensuring the safety of equipment, but also ensuring that the seed crystal particles are fully mixed with zinc and aluminum ions in the reaction process. 2. The equipment structure and operation are very simple, and the arrangement of a sensor, a conversion actuating mechanism and the like is not needed.

Description

Hydrotalcite crystallization reaction kettle with stirrer automatically stopping during overload

Technical Field

The utility model relates to a reation kettle, concretely relates to hydrotalcite crystallization reaction cauldron of agitator overload stop-and-go belongs to chemical industry equipment technical field.

Background

The hydrotalcite is widely used for catalysis, medicine and environmental management, and is particularly applied to the research and development of new energy batteries as a functional material. The coprecipitation method, the hydrothermal method, the instant synthesis method, the template method and the ion exchange method are commonly adopted in the industrial production of the hydrotalcite, but the coprecipitation method is mainly adopted for preparing the hydrotalcite matrix.

In the process of producing hydrotalcite by using a hydrothermal method and a coprecipitation method, a key process flow of crystallizing zinc-aluminum hydrotalcite particles, zinc ions, aluminum ions and the like in a reaction kettle to generate a sheet zinc-aluminum hydrotalcite finished product is provided, and the zinc-aluminum hydrotalcite particles, the zinc ions, the aluminum ions and the like in the reaction kettle need to be fully mixed to ensure that the reaction can be normally carried out and an ideal product required by design can be obtained, so that the reaction kettle is provided with a motor-driven stirrer for stirring the added zinc-aluminum hydrotalcite particles and the zinc ions, the aluminum ions and the like. In the initial stage of the process flow, the zinc-aluminum hydrotalcite particles are used as seed crystals, the particle size is small, the number of the crystals is small, and the stirrer is small in resistance during stirring and can normally rotate; however, as the crystallization reaction is continuously carried out, the more the number of crystal grains formed by combining the zinc-aluminum hydrotalcite particles with zinc and aluminum plasma is, the larger the grain size is, so that the stirring resistance is gradually increased, and when the number of crystals and the grain size meet the design requirements, the stirring, standing and aging should be stopped, so that the crystals grow up without increasing the number of crystal seeds; if the power can not be cut off in time, the motor is stopped, and finally the motor is also stuck and forced to stop due to the continuous rising of the stirring resistance, the number of the seed crystals is excessive, and finally the crystal size is small, so that the expected purpose can not be achieved. Obviously, such a working mode would seriously jeopardize the equipment and even the safety of the operators, and would also disqualify the produced products; however, if the power is cut off in advance, the stirring may be insufficient due to the early power cut, which may affect the output efficiency and product quality. Therefore, how to automatically stop the stirring equipment of the reaction kettle in the process flow in time in the optimal reaction time period is a problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the equipment safety problem caused by the forced stopping of equipment by strong resistance due to the sharp increase of the stirring resistance of a reaction kettle stirrer along with the increase of the number of crystal particles and the increasing of the particle size in the crystallization reaction process of the hydrotalcite product, and the problem of insufficient stirring caused by the fact that the manual stopping can not accurately control the proper time.

To the above problem, the utility model provides a technical scheme is:

a hydrotalcite crystallization reaction kettle with a stirrer automatically stopping when being overloaded comprises a reaction kettle body, a stirrer gear horizontally arranged at the top of the reaction kettle body, a motor with a motor gear, a rack, a fixing frame and a power supply seat with a power supply switch, wherein the stirrer gear is connected with a reaction kettle stirrer through a shaft; the motor is fixedly arranged in the rack, the rack is slidably connected and arranged on the fixing frame through the sliding component, the power supply seat is fixed on the fixing frame in front of the rack, the fixing frame is fixedly connected with the reaction kettle body, and the motor gear is meshed with the stirrer gear; an elastic reset component which enables the rack to bear force along the sliding direction is arranged between the rack and the fixed frame; a switch breaking component which can break the circuit of the power switch is arranged between the frame and the power seat.

Furthermore, the sliding component comprises a sliding block arranged on the rack and a sliding rail arranged on the fixed frame and used for the sliding block to travel, the sliding rail is an arc guide rail along the running direction, and the circle center of the arc guide rail is positioned on the axis line of the horizontally arranged stirrer gear.

Furthermore, the slide rail is a groove rail, the slide block runs in the groove of the slide rail in a sliding friction mode, and the outer surface of the running surface of the slide block is consistent with and attached to the groove-shaped surface of the slide rail.

Furthermore, the walking surface of the sliding block is groove-shaped and slides on the outer surface of the sliding rail in a sliding friction mode, and the shape of the walking surface of the sliding rail is consistent with and attached to the groove-shaped surface of the sliding rail.

Furthermore, the slide rails are divided into a top slide rail and a bottom slide rail which are respectively arranged on the fixed frame above and below the machine frame; the sliding blocks are divided into a top sliding block and a bottom sliding block, are respectively arranged at the bottom and the top of the frame and respectively run on the top sliding rail and the bottom sliding rail.

Furthermore, the elastic reset component is a pressure spring and is arranged at the front part of the frame.

Furthermore, the elastic reset component is a tension spring and is arranged at the rear part of the rack.

Furthermore, the touch-off component comprises a pressing part arranged on the front part of the rack and a top release bolt arranged on the power supply seat, a bolt hole is arranged on the power supply seat, the top release bolt is inserted into the bolt hole on the power supply seat, one end of the top release bolt is contacted with the power switch, and the other end of the top release bolt faces the pressing part.

Further, the pressing piece comprises a sleeve seat and a pressing column; the sleeve seat is provided with a sleeve and is fixed at the front part of the frame, so that the pipe orifice faces the ejection bolt; the sleeve is provided with a radial threaded hole, a screwed fastening bolt is arranged in the threaded hole, one end of the pressing column is inserted into the sleeve and is fixed by the fastening bolt, and the other end of the pressing column faces the ejecting bolt; when the frame slides forwards to a set position, the abutting column contacts and pushes the ejecting bolt, so that the ejecting bolt pushes the power switch away from a circuit closing position to realize automatic power off.

Further, the fixing frame is provided with a bottom plate, a top plate and side plates; the side plates are vertically arranged, the bottom plate and the top plate are horizontally fixed at the upper end and the lower end of the same side of the side plates to form a rectangular frame with an opening facing the stirrer gear, and the rack is installed in the rectangular frame of the fixing frame.

The utility model has the advantages that:

1. the method can realize automatic power-off and stirring stop in the optimal time period of hydrotalcite crystallization reaction, ensure the safety of reaction kettle equipment and ensure that the seed crystal particles are fully mixed with zinc, aluminum and other ions in the reaction process.

2. The equipment structure and operation are very simple, and the arrangement of a sensor, a conversion actuating mechanism and the like is not needed.

Drawings

FIG. 1 is a schematic perspective view showing the positional relationship between reaction devices in each stage in a three-stage reaction process for producing hydrotalcite, wherein the third stage is a product of the present invention;

FIG. 2 is a schematic perspective view of a hydrotalcite crystallization reactor with an automatic stop-start agitator in accordance with one embodiment of the present invention;

FIG. 3 is a schematic front view of a hydrotalcite crystallization reactor with a stirrer automatically stopping when being overloaded according to an embodiment one;

FIG. 4 is a schematic top view of a hydrotalcite crystallization reactor with an automatic stop-start stirrer during overload according to an embodiment, mainly showing the structural relationship between a rack and a stirring gear;

FIG. 5 is a structural relationship between a stirring gear and a slide rail of the hydrotalcite crystallization reaction kettle with the stirrer automatically stopping when being overloaded according to the first embodiment;

FIG. 6 is a view showing a hydrotalcite crystallization reactor with a stirrer automatically stopped due to overload in example II;

fig. 7 is a diagrammatic illustration of a gantry slipping process.

In the figure: 1. a first-stage reaction device; 2. a secondary reaction device; 3. and a tertiary reaction device; 4. a reaction kettle body; 41. a stirrer gear; 5. a motor; 51. a motor gear; 6. a frame; 61. the top part is fast to slide; 62. a bottom slider; 7. a fixed mount; 71. a top slide rail; 72. a bottom slide rail; 73. a base plate; 74. a top plate; 75. a side plate; 8. a cannula holder; 81. a sleeve; 82. fastening a bolt; 9. a pressing column; 10. ejecting and removing the plug; 11. a power supply base; 12. a pressure spring; 13. a power switch; 14. and a backward stop.

Detailed Description

The invention is further described below with reference to the following examples and figures:

example one

As shown in fig. 1, the production of zinc-aluminum hydrotalcite needs to be subjected to three-stage reaction, which has a primary reaction apparatus 1, a secondary reaction apparatus 2, and a tertiary reaction apparatus 3, respectively. The utility model discloses a hydrotalcite crystallization reation kettle that agitator overload stop motion is the reaction unit who designs for last one-level reaction in the tertiary reaction flow of hydrotalcite production, and its effect is with hydrotalcite particle and zinc, aluminium ion etc. that produce in the second grade reaction safer, the efficient generates slice zinc-aluminium hydrotalcite finished product.

As shown in fig. 2-4, the hydrotalcite crystallization reaction kettle with the stirrer automatically stopping when being overloaded comprises a reaction kettle body 4, a stirrer gear 41 horizontally arranged at the top of the reaction kettle body 4, the stirrer gear 41 is connected with the reaction kettle stirrer through a shaft, the hydrotalcite crystallization reaction kettle further comprises a motor 5 with a motor gear 51, a rack 6, a fixed frame 7 and a power supply seat 11 with a power supply switch 13, the motor 5 is fixedly arranged in the rack 6, the rack 6 is arranged on the fixed frame 7, the power supply seat 11 is fixed on the fixed frame 7 in front of the rack 6, the part of the fixed frame 7, which is used for installing the rack 6, is positioned at the top of the reaction kettle body 4 at one side of the stirrer gear 41 and is fixed with the reaction kettle body 4, and the motor gear 51; a sliding component which can enable the rack 6 to slide on the fixed frame 7 is arranged between the rack 6 and the fixed frame 7, the sliding component comprises a sliding rail, and an elastic resetting component which enables the rack 6 to be stressed along the sliding direction is arranged between the rack 6 and the fixed frame 7; a switch breaking member that can break the circuit of the power switch 13 is provided between the chassis 6 and the power supply base 11.

With the above arrangement, the motor 5 drives the reaction vessel stirrer to rotate through the motor gear 51 and the stirrer gear 41, thereby mixing the hydrotalcite particles (seed crystals) and the zinc and aluminum ions, etc. added into the reaction vessel. When the motor drives the agitator to rotate, the teeth of the motor gear 51 apply a driving force to the teeth of the agitator gear 41, and at the same time, the teeth of the agitator gear 41 generate a reaction force to the teeth of the motor gear 51, which pushes the frame 6 to slide along the slide rail. In order to ensure that the gear teeth of the motor gear 51 apply a sufficient driving force to the gear teeth of the agitator gear 41, the elastic reset component arranged between the frame 6 and the fixed frame 7 enables the frame 6 to slide along the slide rail with a sufficient resistance, but ensures that the switch touch-off component is not touched within a certain sliding interval range.

Along with the continuous progress of crystallization reaction in the reation kettle body 4, the particle diameter of crystallization granule is bigger and bigger, and agitator rotating resistance also increases gradually for the reverse thrust that frame 6 received also progressively increases, makes frame 6 constantly slide along the slide rail. When the rotation resistance of the stirrer is increased to a set value, the sliding frame 6 finally reaches the end of the sliding range, and the power switch 13 is pushed by the touch-off component to force the power supply to be switched off at the position close to the end of the sliding range, so that the motor 5 can automatically stop rotating when the stirrer is at the maximum set resistance value, and the safety of equipment and operators is protected (refer to the final diagram in the process). Meanwhile, the maximum set resistance value of the reaction kettle stirrer is also set according to the appropriate mixing degree and reaction degree of hydrotalcite particles (crystal seeds) and zinc and aluminum ions. Therefore, the reaction efficiency of the crystallization reaction and the product quality of the generated product can be most effectively ensured by the automatic stop timing of the motor 5.

The elastic restoring component for forcing the frame 6 to bear force in the sliding direction is arranged between the frame 6 and the fixed frame 7, and actually means that one end of the elastic restoring component is directly contacted with the frame 6 to force the frame 6, while the other end is not necessarily directly contacted with the fixed frame 7, but the acting force is transmitted to the fixed frame 7. As shown in the figure, one end of the elastic reset component is directly arranged on the frame 6, and the other end is arranged on the power supply seat 11 fixedly connected with the fixed frame 7.

Further improvements are as follows.

As shown in fig. 2, 4, and 5, the sliding component includes a sliding block disposed on the frame 6 and a sliding rail disposed on the fixed frame 7 for the sliding block to travel, the sliding rail is an arc-shaped guide rail along the running direction, and the center of the arc-shaped guide rail is located on the axis of the horizontally disposed agitator gear 41. The purpose of this arrangement is that the motor gear 51 remains engaged with the agitator gear 41 at all times as the frame 6 slides along the arcuate guide.

The sliding rail is a groove rail, the sliding block runs in the groove of the sliding rail in a sliding friction mode, and the outer surface of the running surface of the sliding block is consistent with and attached to the groove-shaped surface of the sliding rail. Such a track and slider arrangement is relatively simple.

A rearward stop 14 is also provided on the slide rail, the rearward stop 14 of the groove rail being disposed within the groove of the slide rail.

As shown in fig. 2, the slide rails are divided into a top slide rail 71 and a bottom slide rail 72, which are respectively arranged on the fixed frame 7 above and below the rack 6; the slide blocks are divided into a top slide block 61 and a bottom slide block 62 which are respectively arranged at the bottom and the top of the frame 6 and respectively run on a top slide rail 71 and a bottom slide rail 72. The track distribution mode is reasonable and simple.

As shown in fig. 3 and 4, the elastic restoring component is a compression spring 12 which is arranged at the front part of the frame 6.

The elastic reset component is a tension spring and is arranged at the rear part of the frame 6.

The above two setting modes of the elastic reset piece can both obtain expected effects.

As shown in fig. 3 and 4, the touch-breaking component includes a pressing part mounted on the front part of the frame 6 and a top release bolt 10 mounted on the power socket 11, a bolt hole is mounted on the power socket 11, the top release bolt 10 is inserted into the bolt hole on the power socket 11, one end of the top release bolt is in contact with the power switch 13, and the other end faces the pressing part. The arrangement is that when the frame slides, the press part pushes the top release bolt 10 to turn off the power switch.

The pressing piece comprises a sleeve seat 8 and a pressing column 9; the sleeve seat 8 is provided with a sleeve 81, and the sleeve seat 8 is fixed at the front part of the frame 6 to enable the pipe orifice to face the ejection bolt 10; a radial threaded hole is formed in the sleeve 81, a fastening bolt 82 screwed in the threaded hole is arranged in the threaded hole, one end of the abutting column 9 is inserted into the sleeve 81 and is fixed by the fastening bolt 82, and the other end of the abutting column faces the ejecting bolt 10; when the frame 6 slides forwards to a set position, the pressing column 9 contacts and pushes the ejecting bolt 10, so that the ejecting bolt 10 pushes the power switch away from a circuit closing position to realize automatic power off. The arrangement is that the distance between the pressing piece and the top release bolt 10 is adjusted by the depth of the pressing column 9 inserted into the sleeve 81, so as to set the maximum stirring resistance value, wherein the maximum stirring resistance value is determined according to the stirring degree required by the reaction kettle stirrer or the crystallization degree of hydrotalcite particles (crystal seeds) and zinc and aluminum ions.

As shown in fig. 2, the fixing frame 7 has a bottom plate 73, a top plate 74, and side plates 75; the side plate 75 is vertically arranged, the bottom plate 73 and the top plate 74 are horizontally fixed at the upper end and the lower end of the same side of the side plate 75 to form a rectangular frame with an opening facing the agitator gear 41, and the rack 6 is installed in the rectangular frame of the fixed frame 7.

The fixing frame 7 is fixed with the reaction kettle body 4 and can also be fixed with a frame body supporting the reaction kettle body 4.

Example two

As shown in fig. 6, a hydrotalcite crystallization reactor with a stirrer capable of automatically stopping when being overloaded differs from the first embodiment in that the running surface of the slide block is in a groove shape along the running direction, as shown in the figure, a top slide block 61 and a bottom slide block 62 slide on the outer surface of the slide rail in a sliding friction manner, and the profile of the running surface of the slide rail is consistent with and attached to the groove-shaped surface of the slide rail, as shown in the figure, a top slide rail 71 and a bottom slide rail 72. The advantage of this arrangement is that dirt collection in the grooves of the track, as in a grooved track, can be avoided.

Below, it is right to utilize the sketch the utility model discloses the process that middle rack 6 slided along the slide rail carries out the brief description to in better understanding the utility model discloses an applied principle.

As shown in fig. 7 (only the frame and the slide rail are shown by a wire frame in the figure), and referring to fig. 3, 4, and 5:

before the stirring is started: the rack 6 is pressed by a pressure spring 12 in front of the rack 6 and limited by a limit stop 14 arranged at the rear end of the slide rail, and the rack 6 is positioned between the point A and the point B of the slide rail;

stirring was started: when the motor is started, the motor gear 51 applies acting force to the stirring gear 41, the stirring gear 41 applies reaction force to the motor gear 51, the frame 6 is forced to slide from the point B to the point C, but the sliding speed of the frame 6 is controlled within the design range due to the resistance of the compression spring 12.

Automatic power-off and stalling: as the stirring resistance is continuously increased, the frame 6 is forced to slide to a point C, and the pressing column 9 in the switch touch-off component touches the top release bolt 10; when the frame 6 slides to the point D, the ejector pin 10 pushes the power switch 13 away from the closed position, and the motor 5 is automatically powered off and stops rotating.

Returning the rack: after the motor 5 is powered off and stops rotating, the motor gear 51 does not apply driving force to the stirring gear 41 any more, and the frame 6 forces the stirring gear 41 together with the stirrer to reversely rotate back to between the points a and B of the slide rail through the motor gear 51 under the action of the return pressure of the pressure spring 12, or forces the motor to reversely rotate to cause the frame 6 to return to between the points a and B of the slide rail (if the speed reduction motor with multi-stage speed reduction is used, the reverse rotation is difficult to occur).

The power switch is closed again: after the frame 6 returns, the power switch 13 will not close by itself, but will close only by human manipulation at the next activation.

The above embodiments are only for the purpose of more clearly describing the invention and should not be considered as limiting the scope of protection covered by the invention, any modification of the equivalent should be considered as falling within the scope of protection covered by the invention.

Claims

1. The utility model provides a hydrotalcite crystallization reation kettle that agitator overload automatic stop, includes that reation kettle body (4), level establish agitator gear (41) at reation kettle body (4) top, agitator gear (41) link to each other its characterized in that through axle and reation kettle agitator: the device also comprises a motor (5) with a motor gear (51), a frame (6), a fixed frame (7) and a power supply seat (11) with a power supply switch (13); the motor (5) is fixedly arranged in the rack (6), the rack (6) is arranged on the fixed frame (7) through a sliding part in a sliding connection manner, the power supply seat (11) is fixed on the fixed frame (7) in front of the rack (6), the fixed frame (7) is fixedly connected with the reaction kettle body (4), and the motor gear (51) is meshed with the stirrer gear (41); an elastic reset component which enables the rack (6) to bear force along the sliding direction is arranged between the rack (6) and the fixed frame (7); a switch breaking component which can break the circuit of the power switch (13) is arranged between the frame (6) and the power base (11).

2. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 1, wherein: the sliding component comprises a sliding block arranged on the rack (6) and a sliding rail arranged on the fixed frame (7) and used for the sliding block to travel, the sliding rail is an arc guide rail along the running direction, and the circle center of the arc guide rail is positioned on the axis line of the horizontally arranged stirrer gear (41).

3. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 2, wherein: the sliding rail is a groove rail, the sliding block runs in the groove of the sliding rail in a sliding friction mode, and the outer surface of the running surface of the sliding block is consistent with and attached to the groove-shaped surface of the sliding rail.

4. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 2, wherein: the walking surface of the sliding block is groove-shaped and slides on the outer surface of the sliding rail in a sliding friction mode, and the shape surface of the walking surface of the sliding rail is consistent with and attached to the groove-shaped surface of the sliding rail.

5. The hydrotalcite crystallization reactor with automatic stop-and-go stirrer overload according to claim 2, 3 or 4, wherein: the slide rails are divided into a top slide rail (71) and a bottom slide rail (72) which are respectively arranged on the fixed frame (7) above and below the rack (6); the sliding blocks are divided into a top sliding block (61) and a bottom sliding block (62), are respectively arranged at the bottom and the top of the frame (6) and respectively run on a top sliding rail (71) and a bottom sliding rail (72).

6. The hydrotalcite crystallization reactor with automatic stop-and-go stirrer overload according to claim 1 or 2, wherein: the elastic reset component is a pressure spring (12) and is arranged at the front part of the frame (6).

7. The hydrotalcite crystallization reactor with automatic stop-and-go stirrer overload according to claim 1 or 2, wherein: the elastic reset component is a tension spring and is arranged at the rear part of the rack (6).

8. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 1, wherein: the touch-off component comprises a press part arranged on the front part of the frame (6) and a top release bolt (10) arranged on the power supply seat (11),

the power supply seat (11) is provided with a bolt hole, the top release bolt (10) is inserted into the bolt hole on the power supply seat (11), one end of the top release bolt is contacted with the power switch (13), and the other end of the top release bolt faces the pressing piece.

9. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 8, wherein: the pressing piece comprises a sleeve seat (8) and a pressing column (9); the sleeve seat (8) is provided with a sleeve (81), and the sleeve seat (8) is fixed at the front part of the frame (6) to enable the pipe orifice to face the ejecting bolt (10); a radial threaded hole is formed in the sleeve (81), a screwed fastening bolt (82) is arranged in the threaded hole, one end of the abutting column (9) is inserted into the sleeve (81) and is fixed by the fastening bolt (82), and the other end faces the ejecting bolt (10); when the frame slides forwards to a set position, the pressing column (9) contacts and pushes the ejecting bolt (10), so that the ejecting bolt (10) pushes the power switch away from a circuit closing position to realize automatic power off.

10. The hydrotalcite crystallization reactor with automatic stop of stirrer overload according to claim 1, wherein: the fixed frame (7) is provided with a bottom plate (73), a top plate (74) and a side plate (75); the side plates (75) are vertically arranged, the bottom plate (73) and the top plate (74) are horizontally fixed at the upper end and the lower end of the same side of the side plates (75) to form a rectangular frame with an opening facing the stirrer gear (41), and the rack (6) is installed in the rectangular frame of the fixed frame (7).