Pretreatment system for measuring light transmittance of toluene extract of carbon black

Abstract

The invention relates to the technical field of toluene extract determination, in particular to a pretreatment system for determining the light transmittance of a carbon black toluene extract. The pretreatment system for measuring the light transmittance of the toluene extract of the carbon black comprises a stirrer which comprises a stirring container and a stirring piece arranged in the stirring container; the filter is communicated with the stirring container; and the collecting container is communicated with the filter. A carbon black sample and methylbenzene are mixed through the stirrer, the contact time of an operator and methylbenzene in the manual hand-cranking mixing process is shortened, a mixed coarse mixture is filtered through the filter, the contact time of the operator and methylbenzene in the manual filtering process is shortened, manual participation steps are totally reduced, and the production efficiency is improved. Therefore, the manual participation time is shortened, operators can be far away from toluene, and the influence of toluene on the health of the operators is reduced.

Description

Technical Field

[0001] This application relates to the field of toluene extract determination technology, and in particular to a pretreatment system for determining the transmittance of carbon black toluene extract. Background Technology

[0002] The transmittance of carbon black toluene extract refers to the light transmittance of the extract at a specific wavelength after a carbon black sample has been extracted with toluene. It is an important indicator of carbon black performance, related to its surface properties, structure, and dispersibility in composite materials such as rubber, and affects the color, gloss, and physical properties of the final product.

[0003] The transmittance of carbon black toluene varies depending on the type of carbon black, its production process, and its quality. In practical applications, such as tire manufacturing, higher transmittance of carbon black usually indicates better dispersibility, which can translate into better material properties.

[0004] Currently, the method for determining the transmittance of carbon black toluene extract is the spectrophotometric method: first, the carbon black sample is mixed with toluene to obtain a mixture, and then the transmittance of the mixture is measured using a measuring instrument. The mixing of the carbon black sample and toluene is performed manually, specifically: 3g ± 10mg of carbon black sample is manually placed into an Erlenmeyer flask, and a 30cm section is measured using a graduated cylinder. 3 ±0.5cm 3 Toluene was placed in an Erlenmeyer flask, and the carbon black sample was manually shaken to mix with the toluene for 60 seconds. After mixing, the mixture was filtered to obtain the mixture to be tested. The entire process involves many manual steps and is time-consuming, which can easily lead to toluene contamination and affect the health of operators. Summary of the Invention

[0005] This application provides a pretreatment system for measuring the transmittance of carbon black toluene extract, which solves the problem in the prior art that the mixing process of carbon black samples and toluene involves many manual steps and takes a long time, which can easily cause toluene contamination and affect the health of operators.

[0006] This application provides a pretreatment system for determining the transmittance of carbon black toluene extract, comprising: a stirrer including a stirring container and a stirring element disposed inside the stirring container, the stirring container being configured to accommodate carbon black samples and toluene, the stirring element being driven to form a gap with the bottom wall of the stirring container, the size of the gap being within a predetermined range; a filter connected to the stirring container to filter the coarse mixture formed after stirring by the stirrer; and a collection container connected to the filter to collect the mixture to be tested formed after filtration by the filter.

[0007] Preferably, the stirrer also includes a magnetic motor, the stirring container is placed on the magnetic motor, the stirring element is magnetic and can be driven by the magnetic motor to levitate inside the stirring container.

[0008] Preferably, the mixing container has a feed inlet and a discharge outlet connected to the filter, and the mixer also includes a removable sealing cap disposed at the feed inlet.

[0009] Preferably, the pretreatment system for measuring the transmittance of carbon black toluene extract also includes a valve located at the discharge port.

[0010] Preferably, the filter includes a filter housing and a filter screen disposed on the filter housing. The filter housing has a flow channel for the coarse mixture formed after agitation by the agitator to flow through. The flow channel is connected to the agitator. The filter screen is at least partially disposed within the flow channel to filter the coarse mixture flowing within the flow channel.

[0011] Preferably, the filter screen is detachably connected to the filter housing.

[0012] Preferably, the pretreatment system for measuring the transmittance of carbon black toluene extract further includes an outlet pipe, which is connected to a stirrer and a collection container, and a filter is installed on the outlet pipe.

[0013] Preferably, the pretreatment system for measuring the transmittance of carbon black toluene extract also includes a pump connected to the collection container.

[0014] Preferably, the pretreatment system for measuring the transmittance of carbon black toluene extract further includes an extraction pipe connected to the collection container, and a pump is installed on the extraction pipe.

[0015] Preferably, the collection container has an inlet connected to the liquid outlet pipe and an outlet connected to the air extraction pipe.

[0016] The beneficial effects of this application are as follows:

[0017] The mixing of carbon black samples and toluene is achieved by a stirrer, reducing the contact time between the operator and toluene during manual mixing. The coarse mixture after mixing is filtered through a filter, further reducing the contact time between the operator and toluene during manual filtration. Overall, the number of manual steps is reduced, thereby reducing the time spent on manual intervention and allowing operators to stay away from toluene, thus reducing the impact of toluene on the operator's health. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the pretreatment system for measuring the transmittance of carbon black toluene extract provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the stirring element of the stirrer in another embodiment of the pretreatment system for measuring the transmittance of toluene extract from carbon black;

[0021] Figure 3 for Figure 1 A schematic diagram of the filter in the pretreatment system for measuring the transmittance of toluene extract from carbon black; and

[0022] Figure 4 for Figure 3 A schematic diagram of the filter screen in the medium filter.

[0023] Figure label:

[0024] 10. Stirrer; 11. Stirring container; 12. Stirring component; 121. Brush rod; 13. Magnetic motor; 14. Sealing cover; 20. Filter; 21. Filter housing; 22. Filter screen; 221. Frame; 222. Mesh; 30. Collection container; 31. Body; 32. Cover; 40. Valve; 50. Liquid outlet pipe; 60. Pump; 70. Vacuum pipe. Detailed Implementation

[0025] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The following is combined with Figures 1 to 4 This application describes a pretreatment system for measuring the transmittance of carbon black toluene extract, comprising: a stirrer 10, including a stirring container 11 and a stirring element 12 disposed inside the stirring container 11, the stirring container 11 being configured to accommodate carbon black samples and toluene, the stirring element 12 being driven to form a gap with the bottom wall of the stirring container 11, the size of the gap being within a predetermined range; a filter 20, connected to the stirring container 11, for filtering the coarse mixture formed after stirring by the stirrer 10; and a collection container 30, connected to the filter 20, for collecting the mixture to be tested formed after filtration by the filter 20.

[0027] Toluene is contained in the stirring container 11. The carbon black sample is placed into the stirring container 11 and stirred by the stirring element 12, so that most of the carbon black sample is dissolved in the toluene to form a crude mixture. There is still a small part of carbon black sample that is not dissolved in the toluene in the crude mixture. It needs to be filtered before the transmittance is measured to avoid affecting the measurement results. The crude mixture is filtered through the filter 20 to intercept the carbon black sample that is not dissolved in the toluene, forming the test mixture. The test mixture enters the collection container 30, waiting for the transmittance to be measured.

[0028] Existing technologies for manual transmittance measurement pretreatment have several problems: First, it is time-consuming, with each sample requiring nearly 30 minutes of pretreatment, resulting in low efficiency. Second, the pretreatment process involves substances harmful to human health. Carbon black samples contain many aromatic hydrocarbons, some of which may be carcinogenic. These substances adhere firmly to the surface of the carbon black sample and are biologically inert. During the mixing of carbon black samples with toluene, the toluene dissolves the polycyclic aromatic hydrocarbons adhering to the carbon black sample surface. If the manual stirring process is not handled properly or adequate protective measures are taken, operators will directly come into contact with these substances and absorb large amounts of toluene, posing a significant threat to human health. The carbon black toluene extract transmittance measurement pretreatment system provided in this application significantly reduces manual intervention time, improves efficiency, and ensures personal safety.

[0029] Since the carbon black sample is a powdery solid with uneven particle size, a gap is formed between the stirring element 12 and the bottom wall of the stirring container 11 during the stirring process. The carbon black sample can enter the gap and be ground by the stirring element 12 and the stirring container 11 during the stirring process, thereby reducing the particle size of the carbon black sample and accelerating the dissolution of the carbon black sample, thereby improving the efficiency of transmittance measurement.

[0030] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the pretreatment system for measuring the transmittance of carbon black toluene extract provided in an embodiment of this application.

[0031] In some embodiments provided in this application, the stirrer 10 further includes a magnetic host 13, the stirring container 11 is placed on the magnetic host 13, the stirring element 12 is magnetic and can be driven by the magnetic host 13 to suspend in the stirring container 11.

[0032] When the magnetic drive unit 13 is turned on, the stirring element 12 is magnetically suspended inside the stirring container 11 and rotates to stir. On one hand, the stirring element 12 forms a gap with the bottom wall of the stirring container 11, allowing the carbon black sample within the gap to be ground during rotation. On the other hand, the magnetism of the magnetic drive unit 13 is adjustable, allowing the stirring element 12 to change the size of the gap by adjusting the magnetism of the magnetic drive unit 13. Specifically, when the carbon black sample has a large particle size, the magnetism of the magnetic drive unit 13 is adjusted to a larger value, resulting in a larger distance between the stirring element 12 and the bottom wall of the stirring container 11, allowing the carbon black sample to enter the gap and be ground by the stirring element 12 in conjunction with the stirring container 11. When the carbon black sample has a small particle size, the magnetism of the magnetic drive unit 13 is adjusted to a smaller value, resulting in a smaller distance between the stirring element 12 and the bottom wall of the stirring container 11, allowing the stirring element 12 to contact the bottom wall of the container during rotation. The carbon black sample is ground. When a carbon black sample gets stuck in the gap between the stirring element 12 and the bottom wall of the stirring container 11, affecting the rotation of the stirring element 12, the magnetism of the magnetic host 13 can be increased to increase the size of the gap, so that the stuck carbon black sample can be released from the gap, ensuring that the stirring element 12 can rotate smoothly. On the other hand, the stirring element 12 is located inside the stirring container 11 and is not connected to the driving component (i.e., the magnetic host 13). That is to say, the stirring element 12 is not provided with a connecting rod or other component extending outside the stirring container 11. During the rotation of the stirring element 12, the toluene in the stirring container 11 can form a vortex. The carbon black sample floating on the surface of the toluene can be driven to the inside and bottom of the toluene under the action of the vortex, promoting the mixing of the carbon black sample with the toluene, and also promoting the carbon black sample to enter the gap between the stirring element 12 and the stirring container 11 for grinding.

[0033] Specifically, the stirring component 12 can be a spindle-shaped block magnet.

[0034] like Figure 2 As shown, in other embodiments, the wall surface of the stirring element 12 is radially extended with multiple brush rods 121. The brush rods 121 have a small diameter and form a burr-like structure on the wall surface of the stirring element 12. When the stirring element 12 rotates, the brush rods 121 rotate with the stirring element 12. On the one hand, this can increase the stirring area and promote the mixing of carbon black sample and toluene. On the other hand, the bristles can contact the carbon black sample and impact the carbon black sample during rotation, reducing its particle size. The brush rods 121 in the gaps can also grind the carbon black sample.

[0035] Please continue reading. Figure 1 In some embodiments provided in this application, the stirring container 11 has a feed inlet and a discharge outlet connected to the filter 20, and the stirrer 10 also includes a sealing cover 14 removably disposed at the feed inlet.

[0036] After the toluene and carbon black samples are fed into the mixing container 11 through the inlet, the sealing cap 14 is placed on the inlet to block it. This prevents the liquid in the mixing container 11 from splashing and polluting the surrounding environment during the mixing process.

[0037] Specifically, the top of the stirring container 11 is open, serving as a feed inlet. The feed inlet is relatively large, facilitating the introduction of toluene and carbon black samples into the stirring container 11. The discharge outlet is located at the bottom of the stirring container 11, with a vertical distance of 2 mm from the bottom. This allows a portion of the coarse mixture formed by the stirrer 10 above the 2 mm level to enter the filter 20, reducing the amount of undissolved carbon black sample that has settled at the bottom of the stirring container 11 entering the filter 20 and thus lessening the filtration burden on the filter 20.

[0038] Please continue reading. Figure 1 In some embodiments provided in this application, the pretreatment system for measuring the transmittance of carbon black toluene extract also includes a valve 40 disposed at the discharge port.

[0039] During the operation of the stirrer 10, the valve 40 is closed, forming a closed space inside the stirring container 11 to ensure that the carbon black sample and toluene are fully mixed before being output. After the stirring is completed, the valve 40 is opened, allowing the coarse mixture formed after stirring to be output from the stirring container 11.

[0040] Please refer to Figure 1 and Figure 3 ,in, Figure 3 This is a schematic diagram of the filter 20 in the pretreatment system for measuring the transmittance of carbon black toluene extract provided in the embodiments of this application.

[0041] In some embodiments provided in this application, the filter 20 includes a filter housing 21 and a filter screen 22 disposed on the filter housing 21. The filter housing 21 has a flow channel for the coarse mixture formed after stirring by the stirrer 10 to flow through. The flow channel is connected to the stirrer 10. The filter screen 22 is at least partially disposed in the flow channel to filter the coarse mixture flowing in the flow channel.

[0042] The coarse mixture formed by the stirrer 10 passes through the flow channel of the filter housing 21 and the filter screen 22 inside the flow channel. The filter screen 22 intercepts the undissolved carbon black sample in the coarse mixture, allowing the mixture after the carbon black sample and toluene are completely mixed to pass through the filter screen 22 and enter the collection container 30, thus avoiding the undissolved carbon black sample from affecting the measurement of transmittance.

[0043] Please refer to Figure 1 , Figure 3 and Figure 4 ,in, Figure 4This is a schematic diagram of the filter screen 22 of the filter 20 in the pretreatment system for measuring the transmittance of carbon black toluene extract provided in the embodiments of this application.

[0044] In some embodiments provided in this application, the filter screen 22 is detachably connected to the filter housing 21.

[0045] After use, the filter screen 22 is covered with carbon black samples. The carbon black samples have different particle sizes, which can easily clog the filter screen 22 and affect the subsequent filtration efficiency. Therefore, in order to avoid a decrease in the efficiency of light transmittance measurement, the filter screen 22 is replaced with a new one after each use. The filter screen 22 is detachably connected to the filter housing 21 for quick replacement.

[0046] Specifically, filter screen 22 can be filter paper. For example... Figure 3 and Figure 4 As shown, a long strip-shaped opening can be provided on the side wall of the filter housing 21. The filter screen 22 can include a frame 221 and a mesh 222 fixed in the frame 221. The shape of the frame 221 is the same as the shape of the cross section of the filter housing 21. For example, if the filter housing 21 is cylindrical, then the frame 221 is annular. The filter screen 22 can be inserted into the filter housing 21 from the opening, so that the mesh 222 is located in the flow channel. The frame 221 and the filter housing 21 are sealed together. This can be achieved by adding a sealing ring at the edge of the opening of the filter housing 21 or on the frame 221, so as to prevent the liquid passing through the flow channel from leaking out of the opening of the filter housing 21.

[0047] Please refer to Figure 1 In some embodiments provided in this application, the pretreatment system for measuring the transmittance of carbon black toluene extract further includes an outlet pipe 50, which is connected to a stirrer 10 and a collection container 30, and a filter 20 is disposed on the outlet pipe 50.

[0048] The filter housing 21 has a first connecting port and a second connecting port that are connected to the flow channel. The first connecting port and the second connecting port are located on opposite sides of the filter screen. The liquid outlet pipe 50 is divided into two sections. One end of the first section is sealed and connected to the discharge port of the stirring container 11, and the other end is sealed and connected to the first connecting port of the filter housing 21, so as to guide the coarse mixture formed after stirring into the flow channel of the filter 20. One end of the second section is sealed and connected to the second connecting port of the filter housing 21, and the other end is connected to the collection container 30, so as to guide the mixture to be tested formed after filtration into the collection container 30.

[0049] Please continue reading. Figure 1 In some embodiments provided in this application, the pretreatment system for measuring the transmittance of carbon black toluene extract further includes a pump 60 connected to the collection container 30.

[0050] After the stirrer 10 thoroughly mixes the carbon black sample with toluene, the pump 60 is turned on. The coarse mixture formed by stirring is drawn into the filter 20 by the pump 60, and then passes through the filter screen 22 of the filter 20 to form the test mixture. The test mixture is then drawn into the collection container 30. The pump 60 is used to provide the flow power for the coarse mixture and the test mixture.

[0051] Please continue reading. Figure 1 In some embodiments provided in this application, the pretreatment system for measuring the transmittance of carbon black toluene extract further includes an exhaust pipe 70 connected to the collection container 30, and a pump 60 is installed on the exhaust pipe 70.

[0052] Pump 60 first evacuates the inside of collection container 30 to a vacuum state, and then uses air pressure to make the coarse mixture in stirring container 11 flow to filter 20 and pass through filter screen 22, and then the filtered mixture to be tested enters collection container 30.

[0053] Specifically, pump 60 can be a vacuum pump.

[0054] Please continue reading. Figure 1 In some embodiments provided in this application, the collection container 30 has an inlet connected to the liquid outlet pipe 50 and an outlet connected to the air extraction pipe 70.

[0055] The inlet and outlet of the collecting container 30 are both formed at its top. The outlet pipe 50 is used for the flow of the coarse mixture formed after stirring and the test mixture formed after filtration; that is, the substance flowing inside the outlet pipe 50 is liquid. Therefore, the outlet end of the outlet pipe 50 is inserted into the lower part of the collecting container 30, so that the test mixture enters the collecting container 30 from the bottom. The inlet end of the suction pipe 70 is inserted into the upper part of the collecting container 30, so that when the pump 60 starts working, it first extracts air from the upper part of the collecting container 30, avoiding drawing air into the test mixture inside the collecting container 30. If the outlet end of the liquid outlet pipe 50 is inserted into the upper part of the collection container 30 at the same position as the inlet end of the suction pipe 70, then when the pump 60 is working, the test mixture that has just flowed out of the outlet end of the liquid outlet pipe 50 may be drawn into the suction pipe 70 from the inlet end of the suction pipe 70. Therefore, the outlet end of the liquid outlet pipe 50 and the inlet end of the suction pipe 70 are inserted into different positions in the collection container 30.

[0056] Specifically, the collection container 30 includes a body 31 and a cover 32 disposed on the body 31. The top of the body 31 is formed as an open opening, and the cover 32 is sealed at the open opening. Both the inlet and outlet are located on the cover 32. The cover 32 is made of silicone and is elastic. The liquid outlet pipe 50 is press-fitted with the cover 32 at the inlet, and the air extraction pipe 70 is press-fitted with the cover 32 at the outlet, thereby achieving a sealed fit between the liquid outlet pipe 50 and the air extraction pipe 70 and the cover 32, thus ensuring that the pump 60 can work smoothly.

[0057] The method of using this application is as follows:

[0058] Install the new filter 22 into the filter 20;

[0059] Weigh 3g±10mg of carbon black sample and place it into a stirring container 11 containing toluene. Turn on the magnetic generator 13, and the stirring element 12 will be suspended and rotated. Stir for 1 minute to obtain a coarse mixture.

[0060] Open valve 40 and pump 60 to draw the coarse mixture into filter 20 and through filter screen 22 to obtain the mixture to be tested;

[0061] Keep pump 60 running to draw the mixture to be tested into collection container 30 and wait for transmittance measurement.

[0062] The above method can be implemented using a controller. Specifically, the pretreatment system for measuring the transmittance of carbon black toluene extract in this application also includes a controller. Valves 40 and pump 60 are electrically connected to the controller and are controlled by the controller to open and close. The controller is equipped with a timing module preset to 1 minute. The magnetic host 13 and the controller's timing module are activated simultaneously. That is, while the stirrer 12 stirs the toluene and carbon black samples in the stirring container 11, the timing module starts timing. When the timing module reaches 1 minute, the controller automatically controls valve 40 and pump 60 to open. After all the coarse mixture with a liquid level above 2 mm in the stirring container 11 has been discharged, valve 40 and pump 60 can be manually closed. Adding a controller further reduces the time required for manual intervention, eliminating the need for manually opening and closing valve 40 and pump 60, thus improving safety.

[0063] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In this application, the term "some embodiments," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A pretreatment system for determining the transmittance of carbon black toluene extract, characterized in that, include: A stirrer includes a stirring container and a stirring element disposed inside the stirring container, the stirring container being configured to accommodate carbon black samples and toluene, and the stirring element being actuated to form a gap with the bottom wall of the stirring container, the size of which is within a predetermined range. A filter, connected to the mixing container, is used to filter the coarse mixture formed after the agitator has stirred the mixture; as well as A collection container, connected to the filter, is used to collect the test mixture formed after filtration by the filter.

2. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 1, characterized in that, The stirrer also includes a magnetic motor, the stirring container is placed on the magnetic motor, the stirring element is magnetic and can be driven by the magnetic motor to levitate inside the stirring container.

3. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 1, characterized in that, The mixing container has a feed inlet and a discharge outlet connected to the filter, and the agitator also includes a removable sealing cap disposed at the feed inlet.

4. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 3, characterized in that, The pretreatment system for measuring the transmittance of carbon black toluene extract also includes a valve installed at the discharge port.

5. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 1, characterized in that, The filter includes a filter housing and a filter screen disposed on the filter housing. The filter housing has a flow channel for the coarse mixture formed after the agitator is agitated to flow through. The flow channel is connected to the agitator. The filter screen is at least partially disposed in the flow channel to filter the coarse mixture flowing in the flow channel.

6. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 5, characterized in that, The filter screen is detachably connected to the filter housing.

7. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 1, characterized in that, The pretreatment system for measuring the transmittance of carbon black toluene extract also includes a liquid outlet pipe, which connects the stirrer and the collection container, and the filter is installed on the liquid outlet pipe.

8. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 7, characterized in that, The pretreatment system for measuring the transmittance of carbon black toluene extract also includes a pump connected to the collection container.

9. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 8, characterized in that, The pretreatment system for measuring the transmittance of carbon black toluene extract also includes an extraction pipe connected to the collection container, and the pump is mounted on the extraction pipe.

10. The pretreatment system for measuring the transmittance of carbon black toluene extract according to claim 9, characterized in that, The collection container has an inlet connected to the liquid outlet pipe and an outlet connected to the air extraction pipe.

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