CN209841448U

CN209841448U - Establish real-time sampling device outside reation kettle

Info

Publication number: CN209841448U
Application number: CN201821729928.3U
Authority: CN
Inventors: 方艳
Original assignee: Shenzhen Xinchuang Material Technology Co Ltd
Current assignee: Shenzhen Xinchuang Material Technology Co Ltd
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2019-12-24
Anticipated expiration: 2028-10-23

Abstract

The utility model discloses an establish real-time sampling device outside reation kettle, this sampling device includes: a sampler, it is set up outside the reactor; the circulating pump is communicated with the inner cavity of the sampler through a sample discharge pipe and is communicated with the inner cavity of the reaction kettle through a sample return pipe; the on-line pH meter probe is fixed above the sampler and extends into the inner cavity of the sampler to a certain depth; the bottom of the sampler is provided with a feeding hole, the feeding hole is also connected with a sampling tube, and the sampling tube extends below the liquid level of the reaction kettle; the side surface of the sampler is also provided with a discharge hole which is connected with the sample discharge pipe. The sampling device is arranged outside the cavity of the reaction kettle, so that the service life of the on-line PH meter can be greatly prolonged, and the measurement accuracy of the PH meter is ensured to be improved.

Description

Establish real-time sampling device outside reation kettle

Technical Field

The utility model belongs to the technical field of ternary precursor reation kettle technique and specifically relates to an online pH meter automatic sampling device about ternary material precursor reation kettle.

Background

In the production process of the ternary lithium battery anode material, the precipitation reaction process of the ternary precursor is a key process about the product cost and performance. The control of the pH value of the slurry in the reaction process is the most critical control point, and several key parameters of the ternary material precursor, such as particle size distribution, tap density, specific surface area and the like, are mainly determined by the pH value control in the reaction process.

At present, the pH value of the precipitation reaction of the ternary material precursor is basically measured by an online pH meter, the online pH meter is put into a reaction kettle from an opening on the reaction kettle to measure data, and the data are output to a control end. For example, CN 207153703U is placed in an online pH meter at the upper opening of a reaction kettle, and CN 204735206U is placed in an online pH meter at the side opening of the reaction kettle.

This has the following disadvantages: 1, because the stirring speed of the reaction kettle is high and the measuring end of the on-line pH meter is a thin glass ball, the service life of the on-line pH meter is greatly shortened by directly placing the on-line pH meter into the reaction kettle; 2, the slurry in the reaction kettle can be attached to a glass ball at the measuring end of the pH meter after a period of time, so that the measuring precision of the on-line pH meter is greatly reduced, the quality of the precursor is influenced, and even quality accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a shortcoming that exists to the technical current situation in this field, the technical problem that the utility model provides a establish outside the reation kettle cavity, can prolong the life of online PH meter greatly, ensure to improve the real-time sampling device of PH meter measurement accuracy simultaneously.

In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows:

a real-time sampling device arranged outside a reaction kettle comprises:

a sampler, it is set up outside the reactor;

the circulating pump is communicated with the inner cavity of the sampler through a sample discharge pipe and is communicated with the inner cavity of the reaction kettle through a sample return pipe;

the online pH meter probe is fixed above the sampler through a fixed joint and extends into the inner cavity of the sampler for a certain depth through an insertion hole formed in the top of the sampler;

the bottom of the sampler is provided with a feeding hole, the feeding hole is also connected with a sampling tube, and the sampling tube extends into the inner cavity of the reaction kettle until the position of the sampling tube is below the liquid level of the slurry; the side surface of the sampler is also provided with a discharge hole which is connected with the sample discharge pipe.

Wherein, the material of sampler is transparent organic glass, the circulating pump adopts the peristaltic pump.

The utility model provides an embodiment, sampler and reation kettle during operation thick liquids are the negative pressure feeding from reation kettle to the feeding mode of sampler.

In one embodiment of the present invention, the slurry is discharged from the sampler to the reaction kettle by a peristaltic pump.

The connection mode of the reaction kettle and the sampler can be a hose or a stainless steel pipe.

Compared with the prior art, the utility model discloses there is following advantage:

the sampler is transparent material, can observe whether pH meter probe is contaminated and in time wash at any time, avoids transmitting wrong data.

The probe of the on-line pH meter is convenient to put in and take out the sampler, and is convenient to clean and correct.

The liquid amount and the shearing force of the liquid in the sampler are much smaller than those in the reaction kettle, so that the service life of the probe of the on-line pH meter is greatly prolonged.

Brief description of the drawings：

Fig. 1 is a schematic view of an automatic sampling device applied to a reaction system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a sampler according to an embodiment of the present invention.

Wherein: 1-sample discharge pipe, 2-peristaltic pump, 3-sample return pipe, 4-reaction kettle, 5-sampler, 6-online pH meter probe, 7-fixed joint, 8-sampling pipe, 9-online pH meter analyzer, 10-insertion hole, 11-feeding hole and 12-discharging hole.

The specific implementation mode is as follows:

the technical scheme of the invention is specifically explained in detail by the embodiments listed in the accompanying drawings of the specification:

as shown in fig. 1 and fig. 2, an on-line pH meter automatic sampling device of a ternary material precursor reaction kettle comprises a sampler 5, wherein the sampler 5 is arranged outside the reaction kettle 4, the sampler 5 is made of transparent organic glass, the top of the sampler is a pH meter probe insertion hole 10, the bottom of the sampler is a feed hole 11, the side of the sampler is a discharge hole 12, and the height of the discharge hole 12 is located at 2/3 of the pH meter probe. The volume ratio of the sampler 5 to the online pH meter probe 6 is 3: 1. the online pH meter probe 6 is inserted into the inner cavity of the reaction kettle 4 from the insertion hole 10 to the position below the liquid level of the slurry, and is fixed and sealed by the fixed joint 7. The fixed joint 7 is matched with the thread of the online pH meter probe 6, so that the probe can be conveniently taken out. The sample discharge pipe 1 and the sample return pipe 3 that the peristaltic pump 2 passes through are connected with the discharge hole 12 and the reaction kettle 4 of the sampler 5 respectively, and the sample discharge pipe 1 and the sample return pipe 3 are made of special hoses for the peristaltic pump. The feed hole 11 of the sampler 5 is connected to the inside of the reaction vessel 4 through a sampling tube 8 made of a hose. After the peristaltic pump starts working, the sampler 5 is changed into negative pressure, and slurry enters the sampler from the reaction kettle 4 through the feeding hole 11 under the action of the negative pressure until the liquid level reaches the horizontal position of the discharging hole 12 and is maintained at the liquid level. At this point, the online pH analyzer 9 is turned on, and data measurement can begin.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an establish real-time sampling device outside reation kettle, characterized by: the sampling device comprises:

a sampler, it is set up outside the reactor;

the online pH meter probe is fixed above the sampler through a fixed joint and extends into the inner cavity of the sampler by a certain depth through an insertion hole formed in the top of the sampler;

2. The real-time sampling device provided outside the reaction kettle as set forth in claim 1, wherein: the material of sampler is transparent organic glass.

3. The real-time sampling device provided outside the reaction kettle as set forth in claim 1, wherein: the circulating pump adopts a peristaltic pump.

4. The real-time sampling device provided outside the reaction kettle as set forth in claim 1, wherein: and when the sampler and the reaction kettle work, the slurry is fed from the reaction kettle to the sampler in a negative pressure manner.

5. The real-time sampling device provided outside the reaction kettle as set forth in claim 1, wherein: the discharging mode of the slurry from the sampler to the reaction kettle is discharging by a peristaltic pump.

6. The real-time sampling device provided outside the reaction kettle as set forth in claim 1, wherein: the connection mode of the reaction kettle and the sampler can be a hose or a stainless steel pipe.