CN112007538B - Preparation device, system and method for alkali cylinder for laboratory - Google Patents

Abstract

The utility model provides a preparation device, system and method that alkali jar was used in laboratory, changes the preparation device and includes the agitator tank, is provided with first feed liquor pipe and first connecting pipe on the agitator tank, the agitator tank top is provided with the feeding section of thick bamboo, and the lower extreme of feeding section of thick bamboo communicates with the inside of agitator tank, is provided with feeder hopper and drive arrangement on the feeding section of thick bamboo, be connected with the dwang on drive arrangement's the output, be provided with helical blade and the stirring dish that is located feeding section of thick bamboo inside on the outer wall of dwang and be located the inside stirring rake of agitator tank, dial the below that the charging dish is located helical blade, the external diameter of stirring dish equals the internal diameter of feeding section of thick bamboo, is provided with the second through-hole on the stirring dish, second through-hole intercommunication feeding section of thick bamboo and agitator tank. The method can ensure that quantitative sodium hydroxide is orderly added into excessive ethanol, remarkably slow down the temperature rise of the ethanol solution, further shorten the subsequent cooling time and reduce the preparation period of the alkali cylinder.

Description

Preparation device, system and method for alkali cylinder for laboratory

Technical Field

The invention relates to the field of laboratory intermediate synthesis equipment, in particular to a preparation device, a preparation system and a preparation method of an alkali cylinder for a laboratory.

Background

Aliphatic and aromatic reagents are often used in drug synthesis experiments. After the experiment, the glass instrument is directly brushed by clean water, which cannot effectively remove the organic reagent adhered to the wall surface, so most laboratories are equipped with alkali jars to soak the glass instrument before cleaning the glass instrument.

The alkali cylinder is an important device for cleaning glass instruments in a laboratory, and the cleaning mechanism is mainly through the dissolving action of ethanol and the acid-base reaction under the strong alkali condition. The polarity of the ethanol has good dissolving effect on most organic matters, and the ethanol is more economic and safer as the ethanol is used as an organic solvent; strong alkali has destructive effect on oil and acidic substances. Therefore, after the glass instrument is soaked in the alkali cylinder for a period of time, most organic matters on the glass instrument are destroyed or dissolved in the cleaning agent of the alkali cylinder, so that the subsequent washing of the glass instrument by clear water by experimenters is easier.

In the prior art, the preparation method of the alkali vat mainly comprises two methods. Firstly, dissolving sodium hydroxide solid in water to form a sodium hydroxide aqueous solution, and uniformly stirring the sodium hydroxide aqueous solution and ethanol after the sodium hydroxide aqueous solution is cooled to room temperature; the second method is to add a certain amount of sodium hydroxide solid particles into a certain volume of ethanol (95%) or absolute ethanol, stir and mix, and then stand to room temperature. In the first method, a large amount of water is introduced, so that the dissolving capacity of the organic matters is relatively poor, and in the process of soaking in the alkali cylinder, a certain amount of aqueous solution is remained in some glass instruments which are brushed by clean water in advance, and the alkali cylinder is also diluted, so that the service life of the alkali cylinder is short, the solution capacity is obviously reduced after the alkali cylinder is used for a plurality of weeks, and the alkali cylinder needs to be prepared again. The second method effectively solves the problem of large water ratio, has better cleaning effect and longer service life, but has the defects that the solubility of ethanol (95%) or absolute ethanol to sodium hydroxide solid particles is low, long-time uniform stirring is usually needed to saturate the sodium hydroxide, the working strength of experimenters is increased, meanwhile, the dissolution process of the sodium hydroxide can release heat, an alkali cylinder higher than room temperature needs to be placed to room temperature after stirring is completed to be used, and the preparation period is long. In addition, in order to saturate sodium hydroxide, excessive sodium hydroxide particles need to be added into ethanol, undissolved excessive sodium hydroxide solid particles not only cause waste, but also produce violent reaction when a laboratory technician is carelessly put into a glass instrument containing acid liquor, and cause high-temperature sodium hydroxide ethanol solution to be flushed out of an alkali cylinder in serious conditions, thereby endangering the safety of the laboratory technician.

Disclosure of Invention

One object of the present invention is to provide a preparation apparatus for alkali cylinder for laboratory, which can ensure that quantitative sodium hydroxide is orderly added into excessive ethanol, significantly slow down the temperature rise of ethanol solution, thereby reducing the subsequent cooling time and reducing the preparation period of alkali cylinder; in addition, the sodium hydroxide feeding mechanism and the solution stirring mechanism are integrated, stirring is carried out while feeding, the stirring and feeding are synchronous through the rotating speed output by the motor, and the stirring and feeding are controlled by one parameter so as to simplify program control; moreover, the stirring tray synchronously rotating with the rotating rod can evenly pour sodium hydroxide solid particles into the ethanol solution in stirring, the dissolving efficiency is obviously improved, the sodium hydroxide saturation is achieved in a shorter time, and the preparation period is greatly shortened.

Another object of the present invention is to provide a soda tank preparation system based on the above soda tank preparation apparatus, which includes a cooling device to prolong the flow time of the sodium hydroxide ethanol solution discharged from the preparation apparatus, and to reduce the temperature of the solution during the flow process and to retain most of the undissolved sodium hydroxide in the cooling device, thereby reducing the amount of sodium hydroxide solids entering the soda tank and improving the safety of the use of the soda tank.

The invention also aims to provide a preparation method of the alkali cylinder, which is different from the traditional extensive preparation, and comprises the steps of firstly introducing a certain amount of ethanol into a preparation device, then quantitatively and uniformly adding sodium hydroxide solid particles while stirring the ethanol until the sodium hydroxide solid particles are saturated, then introducing a prepared saturated sodium hydroxide ethanol solution into the alkali cylinder through a cooling device, and directly soaking the ethanol solution in the alkali cylinder, so that the preparation period is greatly shortened, the safety of the preparation process is improved, and the operation of a laboratory worker is simplified.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic diagram of a dispensing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a rotating rod according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a material storage tray according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a material pulling tray according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the liquid inlet mechanism of the rotating rod according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a dispensing system in accordance with an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a cooling device according to an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-alkali cylinder, 2-preparation device, 21-feeding cylinder, 22-stirring cylinder, 23-rotating rod, 231-liquid discharging hole, 232-liquid inlet hole, 24-material storage disc, 241-first central hole, 242-first through hole, 25-material stirring disc, 251-second through hole, 252-material stirring plate, 253-second central hole, 26-liquid spraying tube, 261-first section, 262-second section, 27-helical blade, 28-stirring paddle, 29-liquid inlet mechanism, 3-driving device, 4-feeding hopper, 5-cooling device, 51-shell, 52-partition plate, 6-first liquid inlet tube, 7-first connecting tube, 8-second connecting tube, 9-workbench, 10-fixed platform, 11-second liquid inlet tube, 12-mounting ring, 13-plug, 14-connecting rod, 15-spring and 16-mounting table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.

The dissolution process of sodium hydroxide in absolute ethyl alcohol or 95% ethanol is a heat release process, the traditional extensive solute pouring mode can make local solvent heat up rapidly, on the one hand, cause the potential safety hazard, it needs longer time to cool down subsequently, and then prolong the preparation cycle, on the other hand, the rising of solvent temperature will improve the solubility of sodium hydroxide, make in the solution prepared sodium hydroxide quantity bigger when more normal atmospheric temperature, lead to when cooling to the room temperature and using, unnecessary sodium hydroxide deposit causes the waste in alkali cylinder bottom, moreover, if adhere to the acid material on waiting to wash the glass instrument, will cause more serious consequence.

Example 1:

the alkali cylinder preparing device for the laboratory as shown in the figures 1 to 4 comprises a stirring cylinder 22, the mixing cylinder 22 is provided with a first liquid inlet pipe 6 and a first connecting pipe 7, a feeding cylinder 21 is arranged above the mixing cylinder 22, the lower end of the feeding cylinder 21 is communicated with the inside of the stirring cylinder 22, the feeding cylinder 21 is provided with a feeding hopper 4 and a driving device 3, the output end of the driving device 3 is connected with a rotating rod 23, the outer wall of the rotating rod 23 is provided with a helical blade 27 and a material stirring plate 25 which are positioned inside the feeding cylinder 21, and a stirring paddle 28 which is positioned inside the stirring cylinder 22, the material stirring disc 25 is positioned below the helical blade 27, the outer diameter of the material stirring disc 25 is equal to the inner diameter of the feeding cylinder 21, a second through hole 251 is formed in the material stirring disc 25, and the second through hole 251 is communicated with the feeding cylinder 21 and the stirring cylinder 22.

In this embodiment, the preparation device includes a mixing bowl and a feeding section of thick bamboo, and the lower extreme of feeding section of thick bamboo communicates with the upper end of mixing bowl, and the material of pouring into in the feeding section of thick bamboo can get into the mixing bowl through the feeding section of thick bamboo lower extreme, and the mixing of solute and solvent mainly takes place in the mixing bowl. The first liquid inlet pipe connected to the stirring cylinder is used for introducing a solvent into the stirring cylinder, and the first connecting pipe is used for discharging the prepared solution into the cooling device.

The feeding cylinder is provided with a feeding hopper and a driving device, and the feeding hopper is used for directly pouring solute such as sodium hydroxide into the feeding cylinder. The driving device preferably adopts a motor, and the output end of the motor is connected with a rotating rod to drive the rotating rod to rotate. The rotating rod is provided with a helical blade, a stirring disc and a stirring paddle.

The spiral blade plays a role in slowing down the falling speed of the solute and guiding and quantitatively conveying the solute, the solute accumulated on the spiral blade gradually moves from top to bottom through the rotation of the spiral blade and finally reaches the lower end of the feeding cylinder, the working principle of the feeding cylinder can refer to the packing auger, and in some embodiments, the lower end of the feeding cylinder extends to the inside of the stirring cylinder.

The stirring disc plays a role in limiting the amount of dissolved substances entering the stirring cylinder, the quantity and the size of second through holes in the stirring disc are changed, the maximum falling amount of solutes in unit time can be adjusted, a small amount of solutes are always in contact with excessive solvents, the contact of a large amount of solutes with the solvents in a short time in the prior art is avoided, excessive heat release is caused, the temperature rise of ethanol solution is remarkably slowed down, the subsequent cooling time is shortened, and the preparation period of the alkali cylinder is shortened. Moreover, dial the charging tray and install on the dwang, when the dwang rotated, dial charging tray synchronous revolution so that the solute through the second through-hole is during the spiral orbit falls into the agitator, further avoided local solute volume too big for the dissolution of solute.

The stirring paddle arranged in the stirring cylinder is used for stirring the solution, so that the dissolving speed of the solute is accelerated. Meanwhile, the rotating speed of the stirring paddle is the same as that of the rotating rod, so that stirring and feeding can be synchronous only by adjusting the rotating speed output by the motor, and stirring and feeding are controlled by one parameter, so that program control is simplified.

In some embodiments, the outer diameter of the helical blade is slightly smaller than the inner diameter of the feeding cylinder, so that a small amount of solute can pass through a gap between the edge of the helical blade and the inner wall of the feeding cylinder, and the blockage of solute conveying caused by material blockage or excessive pressure in an adjacent conveying space in the solute conveying process is avoided. In some embodiments, the outer diameter of the helical blade may be just equal to the inner diameter of the feeding cylinder, so as to avoid solute from passing through the gap between the edge of the helical blade and the inner wall of the feeding cylinder, ensure that the solute quantity in the adjacent conveying spaces is approximately equal, and stabilize the solute quantity input into the stirring cylinder.

Example 2:

as shown in fig. 1 and fig. 3, on the basis of embodiment 1, a material storage tray 24 is arranged on the inner wall of the feeding cylinder 21, the material storage tray 24 divides the inner space of the feeding cylinder 21 into a first cavity and a second cavity, the helical blade 27 is located in the first cavity, and the material pulling tray 25 is located in the second cavity; the material storage disc 24 is provided with a first center hole 241, the rotating rod 23 penetrates through the first center hole 241 in a movable mode, a first through hole 242 is further formed in the material storage disc 24, and the first through hole 242 is communicated with the first cavity and the second cavity.

The material storage plate is arranged in the feeding cylinder, the spiral blade is positioned above the material storage plate, and the material shifting plate is positioned below the material storage plate. The rotating rod penetrating through the first center hole of the storage disc can rotate around the rotating shaft of the rotating rod relative to the first center hole. The first through hole that sets up on the material storage plate can ensure that the solute falls to the second cavity from first cavity in, and then piles up on the material stirring dish. The design of depositing the charging tray can form preliminary storage, avoids piling up too much solute on the group charging tray and leads to unable dwang rotation difficulty, and simultaneously, the preliminary storage in depositing the charging tray can make the material fall to group charging tray in order more, quantitative ground, and the solute volume with the solvent contact is more stable in the unit interval.

In some embodiments, as shown in fig. 4, the material-stirring plate 25 is provided with a material-stirring plate 252, and the material-stirring plate 252 is used for pushing the material on the material-stirring plate 25. In the feeding process, partial solute is accumulated between the material storage disc and the material shifting disc. Under the influence of the compactness of the accumulation or the infiltration of the solvent, the solutes can be bonded to form a block solid with the diameter larger than that of the second through hole. In order to avoid mutual bonding between the solutes, the material stirring plate is arranged on the material stirring plate, when the rotating rod rotates, the material stirring plate synchronously rotates along with the material stirring plate to push the accumulated part of the solutes between the material storage plate and the material stirring plate to move, so that the bonding between the solutes is greatly reduced, the rotating of the rotating rod is smoother, and the rotating load of the motor is smaller.

In some embodiments, the material stirring plates extend along the radial direction of the material stirring plate and are uniformly distributed along the circumferential direction of the material stirring plate, and a second through hole is formed between every two adjacent material stirring plates.

Example 3:

as shown in fig. 5, on the basis of the above embodiment, as a preferred embodiment of the present invention, a fixing table 10 is disposed on a stirring cylinder 22 and located outside a feeding cylinder 21, a second liquid inlet pipe 11 is disposed in the fixing table 10, one end of the second liquid inlet pipe 11 is communicated with an external liquid supply device, the other end of the second liquid inlet pipe 11 extends into the feeding cylinder 21 and is connected with a liquid inlet mechanism 29, the liquid inlet mechanism 29 is sleeved on an outer wall of a rotating rod 23, and the rotating rod 23 can rotate around a central axis of the rotating rod 23 relative to the liquid inlet mechanism 29; the rotating rod 23 is of a hollow structure, a plurality of liquid inlet holes 232 are formed in the rotating rod 23, and the liquid inlet holes 232 are communicated with the inside of the rotating rod 23 and the inside of the liquid inlet mechanism 29; the rotating rod 23 is further provided with a liquid spraying pipe 26, and external liquid can sequentially enter the stirring cylinder 22 through the second liquid inlet pipe 11, the liquid inlet hole 232, the rotating rod 23 and the liquid spraying pipe 26.

During agitation, continued solute feed causes an increasing amount of sodium hydroxide to be dissolved in the solution, requiring further solvent replenishment until the amount of solvent reaches a preset maximum volume. In this technical scheme, the solvent does not supply to the agitator tank through first feed liquor pipe, but gets into the agitator tank through second feed liquor pipe, feed liquor hole, dwang and spray line. Specifically, in solvent among the outside liquid supply device passed through second feed liquor pipe entering feed liquor mechanism, the dwang was at the pivoted in-process, and the inside of feed liquor hole entering to the dwang on through the dwang of solvent in the feed liquor mechanism, under the action of gravity, solvent moved down from the top down along the dwang, finally entered into the spray tube to spout in the spray tube under the effect of pressure. Through the arrangement, the liquid spraying pipe can play a role in stirring, so that the solute can be stirred and dissolved, and the supplemented solvent impacts the solution in the stirring in a spraying mode, so that the solution in the stirring can generate local vortex, and the dissolving efficiency of the sodium hydroxide is further improved.

In some embodiments, the liquid inlet mechanism is disposed inside the feed cylinder.

In some embodiments, the first liquid inlet pipe and the second liquid inlet pipe are connected through a tee joint, when liquid is initially fed, a solvent is poured into the stirring cylinder through the first liquid inlet pipe for storage, and when the solvent is supplemented, the supplemented solvent enters the rotating rod through the second liquid inlet pipe and is directly sprayed into the solution in stirring, so that the dissolving effect is further improved.

In some embodiments, as shown in fig. 2, the liquid spray tube 26 includes a first section 261 and a second section 262, the first section 261 is disposed on the outer wall of the rotating rod 23, and the second section 262 is communicated with the first section 261; the first section 261 is made of plastic and the second section 262 is made of rubber. The spray pipe is two segmentation structures, and first section is the base that plastics were made and fix on the dwang outer wall, and the extension section on the base is connected for making by rubber to the second section. Two segmentation structures make when having the solvent to pass through the runner, and the second section is influenced by the rivers and swings for first section, and the point position of the solvent impact in solution from second section export spun is no longer fixed, but is the form of spraying to further make the mobile state of solution complicated, form more eddies, improve the dissolution efficiency to sodium hydroxide, the dissolving speed is faster.

In some embodiments, the spray tube can be positioned above the paddle or below the paddle.

In some embodiments, the diameter of the flow channel of the liquid spraying pipe is gradually reduced and then gradually increased along the direction from the rotating rod to the inner wall of the stirring cylinder, so as to form an accelerating section in the flow channel and improve the spraying speed of the solvent.

Example 4:

as shown in fig. 5, on the basis of the above embodiment, an installation ring 12 is arranged on the inner wall of the rotation rod 23, a drain hole is arranged on the installation ring 12, the installation ring 12 is located below the liquid inlet hole 232, an installation table 16 is arranged below the installation ring 12, a connection rod 14 is arranged on the installation table 16, a plug 13 is arranged at the top end of the connection rod 14, the size of the plug 13 matches with the size of the drain hole, and a spring 15 is arranged between the installation table 16 and the installation ring 12; when the pressure borne by the upper surface of the plug 13 is not more than the elastic force of the spring 15, the plug 13 closes the drainage hole; the rotating rod 23 is further provided with a liquid discharge hole 231, and the liquid discharge hole 231 is located above the liquid inlet mechanism 29. In the technical scheme, when the pressure on the upper surface of the plug is not greater than the elastic force of the spring, the spring is compressed, the plug is positioned in the drain hole to seal the drain hole, so that the supplemented solvent cannot flow downwards through the drain hole but can only flow upwards vertically by overcoming the gravity, and is finally sprayed out of the drain hole onto the spiral blade to drive the sodium hydroxide on the spiral blade to flow together, preliminarily dissolve and release heat for the sodium hydroxide in the flowing process, the solution is gradually cooled in the subsequent flowing process, and the finally pre-dissolved solution enters the stirring tank through the stirring disc. Above-mentioned structure can promote the dissolving effect when the feed volume is moderate or less to in the feeder hopper, and the partial solvent that supplements has already cooled down and has dissolved partial sodium hydroxide when entering into the agitator tank. When the upper surface of the plug is stressed and is larger than the elastic force of the spring, the spring is stretched, the plug vertically moves downwards, the drain hole is opened, and part of solvent directly enters the stirring cylinder through the liquid spraying pipe to be uniformly mixed. In some embodiments, when the solvent flow in the second liquid inlet pipe is larger, a part of the solvent can directly enter the stirring cylinder through the opened drain hole, and the other part of the solvent which does not reach the drain hole can also flow back and be sprayed onto the spiral blade from the drain hole on the upper part of the rotating rod.

Example 5:

as shown in fig. 6, a preparation system is further provided, which includes any one of the preparation devices 2 in the above embodiments, the preparation device 2 is connected to the cooling device 5 through the first connecting pipe 7, the cooling device 5 is connected to the alkali cylinder 1 through the second connecting pipe 8, and the solution in the preparation device 2 can sequentially enter the first connecting pipe 7, the cooling device 5 and the second connecting pipe 8 into the alkali cylinder 1 for storage. After the temperature of the solution is reduced to be close to the room temperature, sodium hydroxide is gradually separated out and deposited in a cooling device for storage. The sodium hydroxide stored in the cooling device can be taken out for later preparation after the preparation is finished, and can supplement the incompletely saturated solution in the stirring cylinder, thereby playing the dual roles of recovery and supplement. In addition, the precipitated sodium hydroxide is retained in the cooling device, so that the solid amount of the sodium hydroxide entering the alkali cylinder is reduced, and the use safety of the alkali cylinder is improved.

In some embodiments, as shown in fig. 7, the cooling device 5 includes a housing 51, a liquid inlet and a liquid outlet are disposed on the housing 51, a first connecting pipe 7 is disposed in the liquid inlet, a second connecting pipe 8 is disposed in the liquid outlet, and a height of the liquid inlet is greater than a height of the liquid outlet; a plurality of partitions 52 are provided in the housing 51, and the partitions 52 partition an inner space of the housing 51 and form an S-shaped flow passage from top to bottom. Preferably, each partition plate is only contacted with three surfaces of the inner wall of the shell, and two adjacent partition plates are alternately arranged on two opposite inner walls, so that an S-shaped flow channel from top to bottom is formed, the flowing distance of the solution in the cooling device is further prolonged, the cooling effect is improved, and the sodium hydroxide is favorably separated out and deposited on each partition plate.

Example 6:

a method for preparing alkali jar for laboratory, which comprises the following steps:

introducing the solvent into the stirring cylinder until the volume of the solvent reaches one half of the volume of the preset maximum solvent, and stopping introducing the solvent;

the driving device operates and drives the rotating rod to rotate, and the rotating rod drives the helical blade, the stirring disc and the stirring paddle to synchronously rotate;

pouring solute into the feed hopper, stirring for a period of time, and then introducing the solvent into the stirring cylinder again;

when the volume of the solvent reaches the preset maximum volume of the solvent, the first connecting pipe and the second connecting pipe are opened, and the solution is discharged from the stirring cylinder and then enters the alkali cylinder through the cooling device for storage.

As used herein, "first", "second", etc. (e.g., first through hole, second through hole, first center hole, second center hole, etc.) are used only for distinguishing the respective parts for clarity of description, and are not intended to limit any order or to emphasize importance, etc. Further, the term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. The utility model provides a preparation device of alkali cylinder for laboratory, includes agitator tank (22), be provided with first feed liquor pipe (6) and first connecting pipe (7) on agitator tank (22), its characterized in that, agitator tank (22) top is provided with feeding cylinder (21), the lower extreme of feeding cylinder (21) and the inside intercommunication of agitator tank (22) are provided with feeder hopper (4) and drive arrangement (3) on feeding cylinder (21), be connected with dwang (23) on the output of drive arrangement (3), be provided with on the outer wall of dwang (23) and be located feeding cylinder (21) inside helical blade (27) and group charging tray (25) and be located agitator tank (22) inside stirring rake (28), group charging tray (25) are located the below of helical blade (27), the external diameter of group charging tray (25) equals the internal diameter of feeding cylinder (21), a second through hole (251) is formed in the material stirring disc (25), and the second through hole (251) is communicated with the feeding cylinder (21) and the stirring cylinder (22); the stirring device is characterized in that a fixing table (10) located outside the feeding cylinder (21) is arranged on the stirring cylinder (22), a second liquid inlet pipe (11) is arranged in the fixing table (10), one end of the second liquid inlet pipe (11) is communicated with an external liquid supply device, the other end of the second liquid inlet pipe (11) extends into the feeding cylinder (21) and is connected with a liquid inlet mechanism (29), the liquid inlet mechanism (29) is sleeved on the outer wall of the rotating rod (23), and the rotating rod (23) can rotate around the central axis of the rotating rod (23) relative to the liquid inlet mechanism (29); the rotating rod (23) is of a hollow structure, a plurality of liquid inlet holes (232) are formed in the rotating rod (23), and the liquid inlet holes (232) are communicated with the inside of the rotating rod (23) and the inside of the liquid inlet mechanism (29); and a liquid spraying pipe (26) is also arranged on the rotating rod (23), and external liquid can sequentially enter the inside of the stirring cylinder (22) through the second liquid inlet pipe (11), the liquid inlet hole (232), the rotating rod (23) and the liquid spraying pipe (26).

2. The alkali cylinder compounding device for the laboratory according to claim 1, wherein the inner wall of the feeding cylinder (21) is provided with a material storage disc (24), the material storage disc (24) divides the inner space of the feeding cylinder (21) into a first cavity and a second cavity, the helical blade (27) is located in the first cavity, and the material stirring disc (25) is located in the second cavity; be provided with first centre bore (241) on material storage plate (24), dwang (23) activity runs through first centre bore (241), still be provided with first through-hole (242) on material storage plate (24), first through-hole (242) intercommunication first cavity and second cavity.

3. The alkali cylinder dispensing device for laboratories according to claim 1, wherein the material stirring plate (25) is provided with a material stirring plate (252), and the material stirring plate (252) is used for pushing the material on the material stirring plate (25).

4. A laboratory soda jar formulation according to claim 1, characterized in that the outer diameter of the helical blade (27) is equal to the inner diameter of the feed cylinder (21).

5. The alkali cylinder dispensing device for laboratory use as claimed in claim 1, wherein the liquid spraying tube (26) comprises a first section (261) and a second section (262), the first section (261) is disposed on the outer wall of the rotating rod (23), and the second section (262) is communicated with the first section (261); the first section (261) is made of plastic and the second section (262) is made of rubber.

6. The alkali cylinder dispensing device for the laboratory according to claim 1, wherein a mounting ring (12) is arranged on the inner wall of the rotating rod (23), a drain hole is arranged on the mounting ring (12), the mounting ring (12) is positioned below the liquid inlet hole (232), a mounting table (16) is arranged below the mounting ring (12), a connecting rod (14) is arranged on the mounting table (16), a plug (13) is arranged at the top end of the connecting rod (14), the size of the plug (13) is matched with that of the drain hole, and a spring (15) is arranged between the mounting table (16) and the mounting ring (12); when the pressure on the upper surface of the plug (13) is not greater than the elastic force of the spring (15), the plug (13) closes the drainage hole; and the rotating rod (23) is also provided with a liquid discharge hole (231), and the liquid discharge hole (231) is positioned above the liquid inlet mechanism (29).

7. A preparation system of alkali jar for laboratory, characterized by, includes the preparation device (2) of any one of claim 1~6, the preparation device (2) is connected with cooling device (5) through first connecting pipe (7), cooling device (5) are connected with alkali jar (1) through second connecting pipe (8), and the solution in the preparation device (2) can loop through first connecting pipe (7), cooling device (5), second connecting pipe (8) and enter into alkali jar (1) and store.

8. The alkali vat formulating system for laboratory use as claimed in claim 7, wherein said cooling device (5) comprises a housing (51), said housing (51) is provided with a liquid inlet and a liquid outlet, said liquid inlet is provided with a first connecting pipe (7), said liquid outlet is provided with a second connecting pipe (8), the height of said liquid inlet is greater than the height of said liquid outlet; a plurality of partition plates (52) are arranged in the shell (51), and the partition plates (52) partition the inner space of the shell (51) and form S-shaped flow channels from top to bottom.

9. A method of formulating alkali jars for laboratories, using the formulation system of claim 7 or 8, the method comprising the steps of:

introducing the solvent into the stirring cylinder until the volume of the solvent reaches one half of the volume of the preset maximum solvent, and stopping introducing the solvent;

the driving device operates and drives the rotating rod to rotate, and the rotating rod drives the helical blade, the stirring disc and the stirring paddle to synchronously rotate;

pouring solute into the feed hopper, stirring for a period of time, and then introducing the solvent into the stirring cylinder again;

when the volume of the solvent reaches the preset maximum volume of the solvent, the first connecting pipe and the second connecting pipe are opened, and the solution is discharged from the stirring cylinder and then enters the alkali cylinder through the cooling device for storage.

Images