CN214716465U - Reation kettle's portable charge-in system for experiments - Google Patents

Abstract

The utility model discloses a reation kettle's portable feeding system for experiments, connect storage vat and reation kettle through measuring pump and feeding hose and carry liquid material, be equipped with the storage bung on the storage vat, the trompil has run through the connecting pipe on the storage bung, the connecting pipe passes through the fixed plate clamping, switching control valve and connector are installed on connecting pipe upper portion, set up first nitrogen gas valve between switching control valve and the connector, the connector links to each other with the feeding hose, the connecting pipe lower part is equipped with the draw-in groove pipe, link to each other through the pipeline between draw-in groove pipe and the storage vat, still install the nitrogen gas pipe that stretches into the storage vat cavity on the storage bung, be equipped with second nitrogen gas valve on the nitrogen gas pipe, draw-in groove pipe joint or threaded connection hard pipe, hard pipe stretches into in the liquid material of storage vat. The size of the storage bucket cover adaptation storage vat of this device, through dismantling the pipe connection between inlet pipe and the storage vat, nitrogen gas maintains the pressure balance in the storage vat and purging of inlet pipe, guarantees measuring pump normal operating, avoids material crystallization in the feeding hose.

Description

Reation kettle's portable charge-in system for experiments

Technical Field

The utility model relates to a reation kettle feed arrangement improves design technical field, especially relates to an reation kettle's portable charge-in system for experiments.

Background

The lithium battery is used as an energy carrier and is widely applied, lithium iron phosphate, lithium cobaltate, ternary materials and the like are the mainstream parts of the anode material of the lithium battery at present, the ternary materials have absolute price advantages, the battery capacity is improved along with the improvement of the nickel content, and the preparation control requirement is also improved along with the improvement of the nickel content. Common ternary cathode materials comprise 111 type, 523 type, 622 type and 811 type according to the molar ratio of NCM, the cathode material is obtained by mixing and sintering corresponding precursors and lithium, and the physicochemical characteristics of the surface morphology, the particle size and the like of the precursors have large influence on the performance of the cathode material, so that the electrochemical performance of the battery is directly influenced. The precursor prepared by coprecipitation reaction is prepared by taking NCM feed liquid as a raw material, liquid alkali as a precipitator and ammonia water as a complexing agent, and producing particles with specific morphological characteristics by controlling reaction temperature, stirring speed, system pH value and ammonia concentration.

The precursor coprecipitation method is a common method for producing precursor particles with specific morphology and particle size by controlling parameters such as pH value, reaction temperature, stirring speed and the like under the protection of nitrogen and by taking ammonia water as a complexing agent and liquid alkali (NaOH) as a precipitator from a mixed solution of nickel, cobalt and manganese salts. The reaction kettle used in industrialization is 10m³Or 6m³The large kettle is subjected to a small test before industrial process parameters are determined, and the process parameters obtained in the small test process are used as reference for industrialization. The main specification of a commonly-used small experiment reaction kettle is 20L/50L, the experiment requirement precision is high, the stability of the feeding process and the uniformity of raw materials have great influence on the surface appearance and the physical and chemical properties of a precursor, so that the electrochemical properties of materials are directly influenced, meanwhile, in the process of stagnating and cleaning products in the kettle after the reaction is finished, the feeding hoses are easy to block, and the premise of ensuring the experiment is how to control the feeding stability and the smoothness of each feeding hose.

In the existing pilot scale feeding system, the following defects exist: the upper layer of the material is easy to oxidize, the feeding hose in the charging bucket is easy to float, the feeding hose is easy to crystallize and block, the unbalanced condition of the system appears in the next experimental process, and the appearance and performance of the precursor are influenced. Because portable plastic drum is adopted to little reation kettle storage device at present more, connects feed cylinder and reation kettle through the plastic tubing of minor diameter, and the centre adopts the measuring pump to connect, usually trompil on the bung, inserts the hose, thereby gets into reation kettle through measuring pump frequency control feeding flow and react. Generally, the cover can be oxidized and deformed along with the time extension, so that the sealing performance of the cover of the plastic barrel is poor, the nickel-cobalt-manganese mixed liquid is oxidized, and the reaction is influenced; in the feeding process of the metering pump, as the flow rate is low, a peristaltic pump is mostly adopted and moves periodically, and when less feed liquid is in the charging barrel, the bottom of the feeding hose can swing and float upwards occasionally, so that feeding is stopped, and reaction is influenced; meanwhile, after the feeding is stopped and the feeding speed is low, crystallization is easily caused due to the small inner diameter of the feeding hose, and the accuracy and the stability of the feeding are affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a reation kettle's portable charge-in system for experiments, the size of the storage bung adaptation storage vat of this device, through dismantling the pipe connection between feeding hose and the storage vat, nitrogen gas maintains sweeping of pressure balance and feeding hose in the storage vat, guarantees measuring pump normal operating, avoids material crystallization in the feeding hose.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a reation kettle's portable feeding system for experiments, connects storage vat and reation kettle through measuring pump and feeding hose and carry liquid material, is equipped with the storage bung on the storage vat, and the trompil has run through the connecting pipe on the storage bung, and the connecting pipe passes through the fixed plate clamping, and switching control valve and connector are installed on connecting pipe upper portion, sets up first nitrogen gas valve between switching control valve and the connector, and the connector links to each other with the feeding hose, and the connecting pipe lower part is equipped with the draw-in groove pipe, links to each other through the pipeline between draw-in groove pipe and the storage vat, the storage bung on still install the nitrogen gas pipe that stretches into the storage vat cavity, be equipped with the second nitrogen gas valve on the nitrogen gas pipe.

The storage barrel cover and the storage barrel are sealed through a plastic lantern ring, and the nitrogen pipe is fixed through the fixing plate.

The clamping groove pipe is connected with a hard pipe in a clamping or threaded manner, and the hard pipe extends into the liquid material in the storage barrel.

The fixed plate comprises an upper fixed plate and a lower fixed plate, and the lower fixed plate is fixed with the nitrogen pipe.

And the first nitrogen valve and the second nitrogen valve are both connected with an external nitrogen source through air pipes.

The feeding hose be the PVC material, the draw-in groove pipe is the internal thread, hard intraductal processing has the external screw thread with internal thread matched with.

Compared with the prior art, the beneficial effects of the utility model are that: the size of the storage bucket cover adaptation storage vat of this device is through dismantling the pipe connection between feeding hose and the storage vat, and nitrogen gas maintains the pressure balance in the storage vat and sweeps of feeding hose, guarantees measuring pump normal operating, avoids material crystallization in the feeding hose.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

The labels in the figures are: 1. a feed hose; 2. a first nitrogen gas valve; 3. a second nitrogen valve; 4, a storage barrel cover; 5. a nitrogen gas pipe; 6. a connecting pipe; 7. an open-close control valve; 8. an upper fixing plate; 9. a lower fixing plate; 10. a slot clamping pipe.

Detailed Description

The following detailed description is provided to further explain the technical features and advantages of the present invention by referring to the accompanying drawings in combination with the embodiments.

As shown in fig. 1, the utility model discloses a reation kettle's portable feed system for experiments, connect storage vat and reation kettle through measuring pump and feeding hose 1 and carry liquid material, be equipped with storage bung 4 on the storage vat, storage bung goes up the trompil and runs through there is connecting pipe 6, the connecting pipe passes through the fixed plate clamping, switching control valve 7 and connector are installed on connecting pipe upper portion, set up first nitrogen gas valve 2 between switching control valve and the connector, the connector links to each other with the feeding hose, the connecting pipe lower part is equipped with draw-in groove pipe 10, link to each other through the pipeline between draw-in groove pipe and the storage vat, storage bung on still install the nitrogen gas pipe 5 that stretches into the storage vat cavity, be equipped with second nitrogen gas valve 3 on the nitrogen gas pipe.

Further, store up the bung and seal through the plastics lantern ring between the storage vat, the nitrogen gas pipe is fixed through the fixed plate. The clamping groove pipe is connected with a hard pipe in a clamping or threaded manner, and the hard pipe extends into the liquid material in the storage barrel. The fixed plate comprises an upper fixed plate 8 and a lower fixed plate 9, and the lower fixed plate is fixed with the nitrogen gas pipe. And the first nitrogen valve and the second nitrogen valve are both connected with an external nitrogen source through air pipes. The feeding hose be the PVC material, the draw-in groove pipe is the internal thread, hard intraductal processing has the external screw thread with internal thread matched with.

As shown in the cross section of fig. 1, the first nitrogen valve and the second nitrogen valve are controlled by valves, the valves are closed in the coprecipitation reaction process, the connecting pipe is made of a PVC material, the feeding hose is sleeved on the connecting pipe through the connector, and the feeding hose is fixed outside to prevent slipping. The inside pipeline diameter of connecting pipe is unanimous with the feeding hose diameter, and the switching control valve is the inside pipeline switching controller of connecting pipe, and the upper fixed plate is for covering fixing device, and the storage bucket lid is according to the shape and the size looks adaptation of storage vat, and size difference and the size according to different storage vats are different, can change, and its edge adopts the plastics lantern ring to connect sealedly, prevents like this that outside gas from getting into, causes the surface oxidation of feed liquid. The clamping groove pipe adopts an inner clamping groove form and is in spiral connection with a hard pipe (the diameter of the hard pipe is consistent with that of the feeding hose, and the length of the hard pipe is determined according to the depth of the barrel). Firstly, preparing a nickel-cobalt-manganese feed liquid according to requirements, placing the nickel-cobalt-manganese feed liquid in a proper storage barrel, selecting a storage barrel cover and a hard pipe which are matched with the nickel-cobalt-manganese feed liquid, assembling the device according to the requirements, firstly, introducing nitrogen into a second nitrogen valve and a nitrogen pipe, injecting a small amount of nitrogen protective gas into the storage barrel, then, closing the second nitrogen valve, confirming that the first nitrogen valve is closed, opening and closing a controller, and ensuring that the connection tightness of a connecting pipe is good. Hard material is adopted in the hard pipe, so that the problem that feeding is difficult due to the fact that the bottom of the pipeline can swing and float upwards occasionally when less feed liquid exists in the storage barrel in the reaction process can be prevented. After the reaction starts, adding a small amount of nitrogen into the reaction kettle every 12 hours, and preventing the precision of a metering pump from being damaged due to overlarge pressure in a storage barrel caused by the consumption of feed liquid; and after feeding is finished each time, closing the opening and closing control valve, connecting nitrogen into the first nitrogen valve, connecting for 3min, connecting the flow for 60-80mL/min, quickly pumping the residual feed liquid in the feeding hose into the reaction kettle, preventing crystallization blockage caused by material accumulation in the pipeline, then closing the first nitrogen valve, opening the opening and closing control valve when the next stage of reaction is finished, and then carrying out reaction according to the previous process.

Adopt this device can realize the sealed and storage bucket lid convertibility of storage vat, the device is applicable to the mixed liquid storage vat of nickel cobalt manganese of all sizes, has the universality. Utilize removable formula hard pipe and draw-in groove pipe screwed connection, can prevent that the feeding hose from upwards floating, the positive pressure and the nitrogen environment in the feed cylinder can be guaranteed in the use of nitrogen gas access mouthful second nitrogen valve, avoid causing the difficulty for the measuring pump operation under the negative pressure situation. Through the use of first nitrogen gas valve and switching controller, adopt nitrogen gas to sweep, squeeze into reation kettle with the feed liquid in the feeding hose, prevent the inside crystallization of pipeline, after taking above measure, can stabilize the experiment process feeding, for control reaction process, accurate analysis reaction technical parameter and product can provide the guarantee with producing the property.

The utility model discloses in the device, the on-off control etc. of reation kettle, measuring pump, storage vat and nitrogen gas source and each valve that involve are prior art or material, and affiliated technical staff can directly purchase or order from the market according to required product model and specification.

The electrical components presented in the text are all electrically connected with an external master controller and 220V commercial power or industrial power, and the master controller can be a conventional known device with a control function such as a computer.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The present invention is described in detail in the above embodiments, and it should be understood that the described embodiments are not limited to the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims (6)

1. The utility model provides a reation kettle's portable feeding system for experiments, connect storage vat and reation kettle through measuring pump and feeding hose and carry liquid material, a serial communication port, be equipped with the storage bung on the storage vat, the storage bung is gone up the trompil and is run through there is the connecting pipe, the connecting pipe passes through the fixed plate clamping, switching control valve and connector are installed on connecting pipe upper portion, set up first nitrogen gas valve between switching control valve and the connector, the connector links to each other with the feeding hose, the connecting pipe lower part is equipped with the draw-in groove pipe, link to each other through the pipeline between draw-in groove pipe and the storage vat, the storage bung on still install the nitrogen gas pipe that stretches into the storage vat cavity, be equipped with second nitrogen gas valve on the nitrogen gas pipe.

2. The portable feeding system of the reaction kettle for experiments as claimed in claim 1, wherein the storage bucket cover and the storage bucket are sealed by a plastic collar, and the nitrogen gas pipe is fixed by a fixing plate.

3. The portable feeding system of the experimental reactor as claimed in claim 2, wherein the clamping groove pipe is clamped or screwed with a hard pipe, and the hard pipe extends into the liquid material in the storage tank.

4. The portable feeding system of the experimental reactor as set forth in claim 3, wherein the fixing plates include an upper fixing plate and a lower fixing plate, and the lower fixing plate is fixed to the nitrogen gas pipe.

5. The portable feeding system of experimental reactor as claimed in claim 4, wherein said first nitrogen valve and said second nitrogen valve are connected to an external nitrogen source through a gas pipe.

6. The portable feeding system of the experimental reactor as recited in claim 5, wherein the feeding hose is made of PVC, the slot tube is an internal thread, and an external thread matching the internal thread is formed outside the rigid tube.

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