CN111929139A - Sample washing device for assisting in determining total organic carbon content in sedimentary rock - Google Patents

Abstract

The present specification discloses a sample washing device for assisting the determination of the total organic carbon content in sedimentary rocks, the sample washing device includes a placing part, a liquid adding part and a liquid collecting part. The placing portion is provided with a plurality of accommodating cavities for placing samples. The placing portion can move relative to the liquid adding portion, so that the liquid adding portion injects water into different accommodating chambers. A channel is provided between the accommodating cavity and the liquid collecting part, and the liquid in the accommodating cavity can flow into the liquid collecting part through the channel. The sample washing device provided in this specification can realize the sample washing step in the determination of the total organic carbon content in the sedimentary rock to realize the machine sample washing, thereby saving manpower.

Description

Sample washing device for auxiliary determination of total organic carbon content in sedimentary rocks

technical field

The present specification relates to the technical field of organic carbon testing, in particular to a sample washing device used to assist in the determination of total organic carbon content in sedimentary rocks.

Background technique

The descriptions in this section merely provide background information related to the disclosure in this specification and do not constitute prior art.

Total organic carbon (TOC) refers to the sum of the carbon content associated with organic matter contained in sedimentary rocks. The organic carbon content in sedimentary rocks can reflect the abundance of organic matter in sedimentary rocks. The organic carbon content (TOC) of sedimentary rocks is one of the important indicators to evaluate whether sedimentary rocks can be used as source rocks in oil and gas systems.

At present, the determination of total organic carbon in sedimentary rocks needs to be carried out in accordance with the provisions of the national standard GB/T19145-2003, including the following steps: crushing, weighing, dissolving, washing, baking, measuring, and shutting down. Among them, crushing refers to grinding sedimentary rock samples. Weighing refers to weighing 0.01g to 1.00g of sample according to the type of sample. Dissolving the sample refers to slowly adding excess hydrochloric acid solution to the container containing the sample to carry out the reaction to remove the inorganic carbon in the carbonate minerals. Sample washing refers to placing the acid-treated rock sample in a porcelain crucible on a suction filter and washing it with distilled or deionized water until it becomes neutral. Baking the sample refers to placing the porcelain crucible containing the rinsed-to-neutral sample into an oven at 60°C to 80°C and drying it for later use.

In the above-mentioned sample washing process, the existing treatment method is to manually add liquid (distilled water or deionized water) to rinse. However, the sample washing process takes a long time and several times of washing are required to make the washed sample meet the experimental requirements. For example, it needs to be washed for 48 hours, and the washing times can reach more than 100 times. As a result, the manual flushing method consumes too much manpower, and at the same time, during the flushing process, it is easy to cause artificial sample loss (for example, excessive addition of liquid, resulting in overflow of sample powder), which affects the results of total organic carbon determination.

It should be noted that the above description of the technical background is only for the convenience of clearly and completely describing the technical solutions of the present specification, and for the convenience of understanding of those skilled in the art. It should not be assumed that the above-mentioned technical solutions are known to those skilled in the art simply because they are described in the background section of this specification.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, an object of this specification is to provide a sample washing device for assisting in the determination of the total organic carbon content in sedimentary rocks, which can enable the sample washing steps in the determination of the total organic carbon content in sedimentary rocks to be realized. Machine wash samples, thus saving manpower. At the same time, it can make the sample washing work more scientific, precise, and less error-prone, avoid the problem that the liquid may be too much and overflow the sample when artificially adding liquid, and make the determination result of total organic carbon more accurate.

In order to achieve the above purpose, the embodiments of the present specification provide a sample washing device for assisting the determination of the total organic carbon content in sedimentary rocks, including: a placing part, a liquid adding part and a liquid collecting part;

The placing part is provided with a plurality of accommodating cavities for placing samples; the placing part can move relative to the liquid adding part, so that the liquid adding part can inject water into different accommodating cavities; the accommodating cavities A channel is provided between the liquid collecting part and the liquid in the accommodating cavity through which the liquid can flow into the liquid collecting part.

As a preferred embodiment, the liquid collection part includes a liquid collection chamber and a vacuum pump communicated with the liquid collection chamber, and the vacuum pump can make the liquid collection chamber in a negative pressure state.

As a preferred embodiment, it also includes a reaction vessel placed in the accommodating cavity, the reaction vessel is used to hold the sample, the reaction vessel is at least partially made of finely dispersed quartz particles, has a permeation function, and can The sample particles cannot pass through the liquid.

As a preferred embodiment, the shape of the accommodating cavity is the same as the shape of the reaction container, and the channel includes a connection between the accommodating cavity and the liquid collecting portion provided at the bottom of the accommodating cavity by the placing portion. The through hole can discharge the liquid seeping out of the reaction vessel into the liquid collecting part.

As a preferred embodiment, the reaction vessel has an opening, a bottom wall opposite to the opening, and a side wall connecting the opening and the bottom wall, and the bottom wall and the side wall are made of liquid, It cannot be made of the material of the sample particles; the reaction container is provided with a boss at a position outside the side wall near the opening, and the placement portion is provided with a groove matched with the boss.

As a preferred embodiment, the liquid adding part includes a liquid outlet end for injecting water into the reaction vessel; the liquid outlet end has a first position at least partially located in the reaction vessel, and does not is located in the second position in the reaction vessel; when the liquid outlet is in the first position, the liquid outlet can inject water into the reaction vessel; when the liquid outlet is in the second position, The placement portion is movable relative to the liquid outlet end.

As a preferred embodiment, the placing portion moves in a predetermined period, and the predetermined period is greater than the time for the liquid in the accommodating cavity to seep out.

As a preferred embodiment, the placement portion includes a rotatable turntable, a motor for driving the turntable to rotate, and a shaft for transmission, the motor can drive the shaft to rotate, and the shaft can drive The turntable rotates.

As a preferred embodiment, the liquid adding part includes a liquid outlet, a water tank, an infusion pipeline, a power element and a flow control element; the infusion pipeline connects the water tank and the liquid outlet; the power element is located at the The infusion line is used to provide power for the water in the water tank to be transported to the liquid outlet through the infusion line; the flow control element is located on the infusion line and is used to control the outflow The flow control element controls the liquid discharge time and the movement time of the placing part to match the movement time of the placing part, so that the movement period of the placing part is greater than the time of the liquid seeping out of the accommodating cavity. time.

As a preferred embodiment, the placing portion and the liquid collecting portion are made of corrosion-resistant materials, and the water injected into the accommodating cavity by the liquid adding portion is deionized water.

Beneficial effects: The sample washing device provided by the embodiment of the present specification can be used for the sample washing process in the determination of the total organic carbon content in the sedimentary rock. The sample washing device is provided with a placing part, a liquid adding part and a liquid collecting part, the sample to be washed is placed in the holding cavity of the placing part, water is injected into the holding cavity through the liquid adding part, and the holding cavity is infiltrated through the liquid collecting part. The collected liquid can make the sample washing step in the determination of the total organic carbon content in the sedimentary rock to realize the machine washing, thus saving manpower.

With reference to the following description and drawings, specific embodiments of this specification are disclosed in detail, indicating the manner in which the principles of this specification may be employed. It should be understood that the embodiments of this specification are not thereby limited in scope.

Features described and/or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or instead of features in other embodiments .

It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following briefly introduces the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of this specification, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks provided in an embodiment of the present specification;

FIG. 2 is a top view of a placement portion provided in an embodiment of the present specification.

Description of reference numbers:

1. Reaction vessel; 2. Placing part; 21. Receiving cavity; 3. Liquid outlet; 4. Liquid collecting part; 5. Rotating shaft; 6. Water tank; 7. Infusion pipeline; 8. Power element; 9. Flow control element ; 10. Groove.

Detailed ways

In order to make those skilled in the art better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments of the present specification, but not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of this specification.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening another element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or it may be intervening with the other element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this specification belongs. The terms used herein in the specification are for the purpose of describing particular embodiments only, and are not intended to limit the specification. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

See Figure 1. The embodiment of the present specification provides a sample washing device for assisting the determination of total organic carbon content in sedimentary rock, and the sample washing device may include a placing part 2 , a liquid adding part and a liquid collecting part 4 .

Wherein, the placing part 2 is provided with a plurality of accommodating cavities 21 for placing samples. The placing part 2 can move relative to the liquid adding part, so that the liquid adding part can inject water into different accommodating chambers 21 . A channel is provided between the accommodating cavity 21 and the liquid collecting part 4 , and the liquid in the accommodating cavity 21 can flow into the liquid collecting part 4 through the channel.

The sample washing device provided by the embodiment of the present specification can be used for the sample washing process in the determination of the total organic carbon content in the sedimentary rock. The sample washing device is provided with a placing part 2, a liquid adding part and a liquid collecting part 4, the sample to be washed is placed in the accommodating cavity 21 of the placing part 2, water is injected into the accommodating cavity 21 through the liquid adding part, and the liquid collecting part 4. Collecting the liquid exuded from the accommodating chamber 21 can realize the sample washing step in the determination of the total organic carbon content in the sedimentary rock by machine washing, thereby saving manpower.

In the embodiment of the present specification, since the sample contains acidic substances, it flows into the liquid collecting part 4 downstream of the placing part 2 together with the water after being washed with water. The liquid collecting part 4 can be made of corrosion-resistant material. The liquid collection part 4 may include a liquid collection chamber and a vacuum pump in communication with the liquid collection chamber. The vacuum pump can be set outside the liquid collection chamber, as long as it is communicated with the liquid collection chamber. The vacuum pump can take away a large amount of air inside the liquid collecting chamber, so that the liquid collecting chamber is in a negative pressure state, so that the liquid in the containing chamber 21 can flow to the liquid collecting chamber more quickly, saving cleaning time.

In the embodiment of this specification, the sample can be directly placed in the accommodating cavity 21, and the outer wall surface of the accommodating cavity 21 can be made of a material that can pass liquid but cannot pass through the sample particles, so that the liquid after cleaning the sample can seep out , flows into the liquid collection part 4 through the channel.

In another embodiment, the sample washing device may further include a reaction vessel 1 placed in the accommodating chamber 21 . The reaction vessel 1 is used to hold the sample. The reaction vessel 1 is at least partially made of finely dispersed quartz particles, that is, made of relatively fine quartz particles, and has a certain permeation function. The reaction container 1 can pass the liquid but cannot pass the sample particles, so that the liquid after the sample is washed can leak out of the reaction container 1 . The material which can pass through the liquid but cannot pass through the sample particles can be alumina, silica and the like. For example, the reaction vessel may be a crucible made of permeable silica.

In the embodiment of the present specification, since the sample contains an acidic substance, the placing portion 2 can be made of a corrosion-resistant material. The shape of the accommodating cavity 21 may be the same as that of the reaction container 1 , so that the outer wall surface of the reaction container 1 can be placed in contact with the inner wall surface of the accommodating cavity 21 . The above-mentioned channel includes a through hole provided at the bottom of the accommodating cavity 21 of the placing portion 2 and communicating with the accommodating cavity 21 and the liquid collecting portion. The through hole can discharge the liquid seeping out of the reaction vessel 1 into the liquid collecting chamber. A plurality of through holes may be provided at the bottom of one accommodating cavity 21 to achieve better drainage effect. In this embodiment, the accommodating cavity 21 itself can limit the position of the reaction container 1, so that the reaction container 1 can be placed stably.

Wherein, the number of accommodating chambers 21 can be multiple, so that multiple samples can be washed at the same time, and the work efficiency can be improved.

In the embodiment of the present specification, the reaction vessel 1 may have an opening, a bottom wall opposite to the opening, and a side wall connecting the opening and the bottom wall. The bottom and side walls can be made of materials that can pass liquids but not sample particles. The reaction vessel 1 may be provided with a boss outside the side wall near the opening. As shown in FIG. 2 , the placement portion 2 may be provided with a groove 10 matched with the boss. In this embodiment, the groove 10 cooperates with the boss to limit the position of the reaction container 1, so that the reaction container 1 can be placed stably. In addition, the outer wall surface of the reaction container 1 is not in contact with the accommodating cavity 21, so that the reaction container 1 can better penetrate the internal liquid, improve the cleaning efficiency, and save the cleaning time.

In this embodiment, the placement portion 2 may include an upper surface and side surfaces. The upper surface is provided with a groove 10 matched with the boss. The space enclosed by the upper surface and the side surface constitutes the accommodating cavity 21 for accommodating the reaction container 1 and the channel for the liquid in the reaction container 1 to flow into the liquid collection part 4, and the side wall separates the side wall of the reaction container 1 from the external space. open, which is beneficial to prevent the environmental pollution caused by the liquid seeping out of the reaction vessel 1 . The lower end of the side surface may be lower than the lowest point of the reaction vessel 1 placed in the accommodating cavity 21 .

Specifically, when the reaction container 1 is placed in the accommodating cavity 21 of the placement portion 2 , the opening of the reaction container 1 may be slightly higher than the upper surface of the placement portion 2 to facilitate subsequent liquid addition operations to the reaction container 1 .

In the embodiment of the present specification, the liquid adding part is located upstream of the placing part 2 , and the liquid adding part may include a liquid outlet end 3 . The liquid outlet 3 is used to inject water into the reaction vessel 1 located in the accommodating chamber 21 . When water is injected into the reaction container 1 , the liquid outlet end 3 may be higher than the opening of the reaction container 1 , or may be lower than the opening of the reaction container 1 . Preferably, the liquid outlet 3 is lower than the opening of the reaction container 1 when water is injected into the reaction container 1, which can prevent the injected water from splashing the sample out of the reaction container 1, thereby causing sample loss and affecting the experimental accuracy.

Specifically, the liquid outlet 3 has a first position at least partially located in the reaction vessel 1 , and a second position not located in the reaction vessel 1 . When the liquid outlet 3 is located at the first position, the liquid outlet 3 can inject water into the reaction vessel 1 . When the liquid outlet end 3 is located at the second position, the placing portion 2 can move relative to the liquid outlet end 3 to perform a liquid addition operation to the next reaction vessel 1 . Of course, in other embodiments, the liquid outlet 3 may remain fixed, and it is higher than the opening of the reaction vessel 1 during liquid injection.

In the embodiment of the present specification, the placing portion 2 moves in a predetermined period, and the predetermined period is greater than the time for the liquid in the accommodating cavity 21 to seep out. This is to ensure that when water is injected into the same accommodating chamber 21 or reaction vessel 1 next time, the liquid in the accommodating chamber 21 or reaction vessel 1 has all seeped out, completing a cleaning process, so as to obtain a better cleaning effect. According to a large number of experiments, it takes about 5-6 minutes for the liquid in the reaction vessel 1 to seep out completely. The predetermined period can be set to 10 minutes, or adjusted according to the actual situation. This specification does not specifically limit this.

In the embodiment of this specification, the placing portion 2 may include a rotatable turntable, a motor for driving the turntable to rotate, and a rotating shaft 5 for transmission. The shaft 5 is located in the center of the turntable, and the motor can drive the shaft 5 to rotate, so that the shaft 5 drives the turntable to rotate. A plurality of accommodating cavities 21 are evenly arranged on the circumference of the circular turntable. When the liquid outlet 3 is in the second position, the disc can rotate; after the liquid outlet 3 is aligned with the opening of the reaction vessel 1, the turntable stops rotating, the liquid outlet 3 is switched from the second position to the first position, and the water Inject into the reaction container 1; after the water is injected, the liquid outlet 3 is switched from the first position to the second position, and the turntable can continue to rotate, so that the opening of the next reaction container 1 is aligned with the liquid outlet 3, and proceed as before the same operation as described above.

Specifically, the predetermined period of the turntable (ie, the time for one rotation) is greater than the time for the liquid in the reaction vessel 1 to seep out. The predetermined period of the turntable can be set to 10 minutes, or adjusted according to the actual situation. This specification does not specifically limit this.

Further, the liquid collecting part 4 and the turntable can be connected through a support shaft. The support shaft can be located at the rotation center of the turntable, and the turntable can rotate relative to the fixed support shaft. The liquid collecting part 4 is detachably connected with the turntable, which facilitates the installation and removal of the sample washing device.

In the embodiment of this specification, the liquid collecting part 4 may be a hollow annular disk body, and a motor is provided at the center of the liquid collecting part 4 , and the motor may be located directly below the rotating shaft 5 . The diameter of the outer wall of the liquid collection part 4 can be larger than the outer diameter of the turntable, and the highest point of the outer wall of the liquid collection part 4 can be higher than the lowest point of the placing part 2, so that the liquid flowing out of the reaction vessel 1 will not splash outside the liquid collection part 4 and pollute the environment.

Of course, in other embodiments, the moving manner of the placing portion 2 may be moving along a straight line, and the shape of the placing portion 2 may be a rectangular parallelepiped or other shapes. The plurality of accommodating cavities 21 may be uniformly arranged on the placing portion 2 along the moving direction. After the last reaction vessel 1 of the placing part 2 has been filled with water, the placing part 2 is moved to align the first reaction vessel 1 with the liquid adding part, and the next cleaning cycle is performed.

In the embodiment of this specification, the liquid adding part may include a liquid outlet 3 , a water tank 6 , an infusion pipeline 7 connecting the water tank 6 and the liquid outlet 3 , a power element 8 located on the infusion pipeline 7 , and a liquid infusion pipeline 7 . Flow control element 9. Wherein, the power element 8 is used to provide power for transporting the water in the water tank 6 to the liquid outlet 3 through the liquid infusion line 7 . It can be a water pump. The flow control element 9 is used to control the liquid discharge time and liquid discharge amount of the liquid discharge end 3 . The liquid output can be 2-17ml. Specifically, the flow control element 9 is electrically connected with the power element 8, and can control the opening and closing of the power element 8, thereby realizing the control of the liquid discharge time; and the flow control element 9 includes a flowmeter, which can measure the liquid flow, so as to realize the control of the liquid discharge time. Control of liquid output.

The flow control element 9 can control the liquid discharge time to match the movement time of the placing portion 2 , so that the moving period of the placing portion 2 is greater than the time for the liquid in the accommodating cavity 21 to seep out. The flow control element 9, the power element 8 and the motor can cooperate with each other. The opening and closing of the power element 8 can determine the liquid discharge time. The operation of the motor can determine the movement and stop of the placing part 2 and the moving speed of the placing part 2. Calculate and design Reasonable liquid output, liquid output time, moving speed and moving cycle of the placing part 2 enable the sample washing device to run smoothly.

Specifically, the water in the water tank 6 may be deionized water. Deionized water is a liquid that is almost pure water and has little effect on the experiment. Different from deionized water, certain metal ions and soluble organics will remain in distilled water, and only distilled water more than three times can meet the experimental requirements. Therefore, the water in the water tank 6 is preferably deionized water.

In a specific application scenario, the reaction vessel 1 containing the acid-treated sample is placed in the accommodating cavity 21 of the placing portion 2 . The water tank 6 is filled with deionized water, and the flow control element 9 on the infusion line 7 is adjusted to a predetermined amount of water. The movement switch of the placing part 2 is turned on, and the placing part 2 starts to move. For example, when the placing portion 2 includes a turntable, the motor switch is turned on, and the turntable starts to rotate. When the reaction vessel 1 to which water needs to be added is aligned with the liquid outlet end 3 , the placing part 2 stops moving, and the power element 8 provides power to inject a predetermined amount of water into the reaction vessel 1 . After the water is filled, the placing part 2 continues to start moving, and then the next reaction vessel 1 is filled with water. The liquid after cleaning the sample seeps out from the reaction vessel 1 and flows into the liquid collection part 4 . When the number of flushes reaches the requirement, the flushing is stopped, the reaction vessel 1 is taken out, and the waste liquid in the liquid collecting part 4 is poured out.

The sample washing device provided by the embodiment of this specification has the following advantages:

1. Reduce the experimental time that scientific researchers need to invest and save manpower.

2. The machine realizes flushing, quantitative water injection, and the placing part 2 moves at a constant speed, which can ensure the stability of the flushing process. Solve the problem that there may be artificial overflow phenomenon in the process of manual flushing, which may lead to sample loss and affect the experimental accuracy.

3. Faster flushing, automatic liquid addition, simple process, sample washing is a part of the experiment to determine the total organic carbon content in sedimentary rocks, and the sample washing steps have been simplified, which helps the experiment to determine the total organic carbon content in sedimentary rocks Simplified too.

It should be noted that in the description of this specification, the terms "first", "second", etc. are only used for the purpose of description and to distinguish similar objects, and there is no sequence between the two, nor can they be understood as indicating or imply relative importance. Also, in the description of this specification, unless otherwise specified, "plurality" means two or more.

Any numerical value recited herein includes all values of the lower value and the upper value in one unit increments from the lower value to the upper value, where there is an interval of at least two units between any lower value and any higher value, i.e. Can. For example, if the number of components or process variables (eg, temperature, pressure, time, etc.) are stated to have values from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the intent is to illustrate that the The specification also explicitly lists values such as 15 to 85, 22 to 68, 43 to 51, 30 to 32, and the like. For values less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples of what is intended to be express, and all possible combinations of numerical values recited between the lowest value and the highest value are considered to be expressly set forth in this specification in a similar fashion.

Unless otherwise stated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30," including at least the indicated endpoints.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of" describing a combination shall include the identified element, ingredient, component or step as well as other elements, components, components or steps that do not materially affect the essential novel characteristics of the combination. Use of the terms "comprising" or "comprising" to describe combinations of elements, ingredients, components or steps herein also contemplates embodiments consisting essentially of those elements, ingredients, components or steps. By use of the term "may" herein, it is intended to indicate that "may" include any described attributes that are optional.

A plurality of elements, components, components or steps can be provided by a single integrated element, component, component or step. Alternatively, a single integrated element, component, component or step may be divided into separate multiple elements, components, components or steps. The disclosure of "a" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

It should be understood that the above description is for purposes of illustration and not limitation. From reading the above description, many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of being comprehensive. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to disclaim such subject matter, nor should it be construed that the inventor did not consider such subject matter to be part of the disclosed subject matter.

Claims (10)

1. a sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks, is characterized in that, comprising: placing part, liquid adding part and liquid collecting part; The placing part is provided with a plurality of accommodating cavities for placing samples; the placing part can move relative to the liquid adding part, so that the liquid adding part can inject water into different accommodating cavities; the accommodating cavities A channel is provided between the liquid collecting part and the liquid in the accommodating cavity through which the liquid can flow into the liquid collecting part. 2 . The sample washing device for assisting the determination of total organic carbon content in sedimentary rocks according to claim 1 , wherein the liquid collecting part comprises a liquid collecting chamber and a vacuum pump communicated with the liquid collecting chamber, and the The vacuum pump can keep the liquid collecting chamber in a negative pressure state. 3 . The sample washing device for assisting the determination of total organic carbon content in sedimentary rocks according to claim 1 , further comprising a reaction vessel placed in the accommodating cavity, and the reaction vessel is used to hold the sample. 4 . , the reaction vessel is made at least in part of finely dispersed quartz particles, and has a permeable function, which can pass through the liquid but cannot pass through the particles of the sample. 4 . The sample washing device for assisting the determination of total organic carbon content in sedimentary rocks according to claim 3 , wherein the shape of the accommodating cavity is the same as the shape of the reaction vessel, and the channel includes the placing A through hole is provided at the bottom of the accommodating cavity to communicate with the accommodating cavity and the liquid collection part, and the through hole can discharge the liquid seeping out of the reaction container into the liquid collection part. 5. The sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks according to claim 3, wherein the reaction vessel has an opening, a bottom wall opposite to the opening, and a bottom wall connecting the opening with the The side wall of the bottom wall, the bottom wall and the side wall are made of materials that can pass through liquid but cannot pass through the particles of the sample; the reaction vessel is provided with a position outside the side wall near the opening. A boss, the placement part is provided with a groove matched with the boss. 6. The sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks according to claim 3, wherein the liquid adding part comprises a liquid outlet for injecting water into the reaction vessel; The liquid outlet end has a first position at least partially located in the reaction vessel, and a second position not located in the reaction vessel; when the liquid outlet end is in the first position, the liquid outlet end can Water is injected into the reaction vessel; when the liquid outlet end is located at the second position, the placing portion can move relative to the liquid outlet end. 7 . The sample washing device for assisting the determination of the total organic carbon content in sedimentary rocks according to claim 1 , wherein the placing part moves in a predetermined period, and the predetermined period is greater than the liquid permeability in the accommodating cavity. 8 . out time. 8. The sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks according to claim 1, wherein the placing part comprises a rotatable turntable, a motor for driving the turntable to rotate, and a For the rotating shaft of the transmission, the motor can drive the rotating shaft to rotate, and the rotating shaft can drive the turntable to rotate. 9. The sample washing device for assisting in the determination of total organic carbon content in sedimentary rocks according to claim 1, wherein the liquid adding part comprises a liquid outlet, a water tank, an infusion pipeline, a power element and a flow control element; The infusion pipeline connects the water tank and the liquid outlet; the power element is located on the infusion pipeline, and is used to provide power for transporting the water in the water tank to the liquid outlet through the infusion pipeline ; The flow control element is located on the infusion line, and is used to control the liquid discharge time and the liquid output volume of the liquid outlet; the flow control element controls the liquid discharge time to match the movement time of the placing part , so that the movement period of the placing portion is greater than the time for the liquid in the accommodating cavity to seep out. 10 . The sample washing device for assisting the determination of total organic carbon content in sedimentary rocks according to claim 1 , wherein the placing part and the liquid collecting part are made of corrosion-resistant materials, and the liquid adding part is made of corrosion-resistant materials. 11 . The water injected into the accommodating cavity is deionized water.

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