Kneading device

By using a kneading device to squeeze and rub the kneading rotor and the pressure head together, the problem of carbon powder falling off graphite products under high temperature thermal vibration and nuclear radiation was solved, and the ultra-fine structure and performance improvement of graphite products were achieved.

CN224194493UActive Publication Date: 2026-05-05SHANGHAI BIANYUAN CARBON TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI BIANYUAN CARBON TECHNOLOGY CO LTD
Filing Date
2025-04-25
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing graphite products suffer from carbon powder shedding and damage under high-temperature thermal vibration, high-speed friction, and strong nuclear radiation, resulting in short service life. In particular, the performance of large-sized and extra-large isostatically pressed isotropic graphite products is insufficient.

Method used

A kneading device is used to mix carbon powder and asphalt. The kneading rotor and the pressure head work together to squeeze and knead, breaking up the carbon powder agglomerates and allowing each carbon powder particle to fully fuse with the asphalt, forming an ultra-fine graphite product.

Benefits of technology

It has improved the quality and service life of graphite products, achieved performance enhancement of large-size and extra-large-size graphite products, and strengthened the competitiveness of domestically produced graphite products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kneading device which comprises a machine body, a working bin is defined by the machine body, at least two kneading rotors are arranged at the bottom of the working bin, a pressing head is arranged on the upper portion of the working bin and can move in the working bin, the pressing head is provided with a feeding position and a working position on a moving path, the feeding position is far away from the kneading rotors, and the working position is far away from the kneading rotors. The working position is close to the kneading rotor.
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Description

Technical Field

[0001] This utility model relates to the field of kneading equipment technology, and in particular to a kneading device. Background Technology

[0002] Isostatically pressed graphite is a premium graphite material with a range of excellent properties, and it is widely used in industries such as photovoltaics, semiconductors, nuclear reactors, defense, and medicine. Currently, most isostatically pressed graphite products have relatively low performance. In particular, large-format and extra-large-format isostatically pressed isotropic graphite products are far from meeting performance requirements.

[0003] Currently, graphite products are subject to high-temperature thermal vibration, high-speed friction, and strong nuclear radiation during use, resulting in carbon powder shedding and damage, and a short service life. Utility Model Content

[0004] The purpose of this invention is at least to provide a kneading device for mixing toner and asphalt, so as to achieve full kneading of toner and asphalt.

[0005] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0006] One embodiment of this utility model provides a kneading device, which includes: a body defining a working chamber; at least two kneading rotors disposed at the bottom of the working chamber; and a pressure head disposed at the top of the working chamber. The pressure head is movable within the working chamber and has a feeding position and a working position along its movement path. The feeding position is away from the kneading rotors, and the working position is close to the kneading rotors. When the pressure head is in the working position, a kneading area for the kneading rotors to work is formed between the pressure head and the bottom of the working chamber. The kneading rotor has a rotation axis, and the shape of the kneading area is adapted to the area swept by the rotation of the kneading rotor on a rotational cross section perpendicular to the rotation axis.

[0007] In some embodiments, an arcuate depression is formed on the side of the pressure head near at least two kneading rotors, which is adapted to the area swept by the rotation of the kneading rotors, and an arcuate depression is formed at the bottom of the working chamber, which is adapted to the area swept by the rotation of the kneading rotors.

[0008] In some embodiments, the kneading rotor includes at least two kneading blades, and the working surface of the kneading blades includes a first arc surface and a second arc surface; both the first arc surface and the second arc surface extend away from the rotation axis and gradually converge and intersect to form the kneading ribs of the kneading blades.

[0009] In some embodiments, the extending direction of the kneading ribs forms a helical angle of 5° to 30° with the extending direction of the rotation axis.

[0010] In some embodiments, at least two kneading rotors can mesh with each other.

[0011] In some embodiments, at least two kneading rotors can be tangential.

[0012] In some embodiments, at least two kneading rotors rotate in different directions.

[0013] In some embodiments, the kneading device further includes a temperature regulating chamber that extends along a portion of the machine body. The temperature regulating chamber and the machine body define a temperature regulating chamber that at least surrounds the kneading area. In the preheating state, a high-temperature liquid passes through the temperature regulating chamber to heat the machine body. In the kneading state, a low-temperature liquid passes through the temperature regulating chamber to remove heat.

[0014] In some embodiments, at least two power components are also included, connected to the pressure head, which moves within the working chamber under the drive of the at least two power components.

[0015] In some embodiments, a feed inlet is provided on the machine body, and the feed inlet is located between the feed position and the working position of the pressure head.

[0016] In some embodiments, the kneading device is used to knead carbon powder and asphalt.

[0017] One embodiment of this utility model also provides a kneading method, which is implemented using the kneading device described above. The kneading method includes: when the pressure head is in the feeding position, the material enters the working chamber; the pressure head is adjusted to the working position, the kneading rotor rotates, and under the pressing action of the pressure head, the material is kneaded evenly in the kneading area.

[0018] In some embodiments, the kneading device further includes a temperature-regulating chamber that extends along a portion of the machine body, defining a temperature-regulating chamber with the machine body. The temperature-regulating chamber at least surrounds the kneading area. In the preheating state, a high-temperature liquid passes through the temperature-regulating chamber to heat the machine body. In the kneading state, a low-temperature liquid passes through the temperature-regulating chamber to remove heat. The kneading method further includes: controlling the high-temperature liquid to pass through the temperature-regulating chamber before the material enters the working chamber; and controlling the high-temperature liquid to pass through the temperature-regulating chamber during the kneading process in the kneading area.

[0019] The kneading device involved in this utility model, when mixing materials, the inner wall surface of the working chamber, the working surface of the kneading rotor, and the lower side of the pressure head near the kneading rotor cooperate with each other to squeeze and knead the materials, which can break up the carbon powder agglomerates, so that each carbon powder particle can be fully integrated with the asphalt, improve the quality of graphite products, realize the ultra-fine structure of graphite products, and enhance the competitiveness of domestic graphite products. Attached Figure Description

[0020] The above-described features and advantages of this invention can be better understood after reading the following detailed description of the embodiments of this disclosure in conjunction with the accompanying drawings. In the drawings, the components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals. Wherein:

[0021] Figure 1 This is a cross-sectional structural schematic diagram of the kneading device according to some embodiments;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the kneading device according to some other embodiments;

[0023] Figure 3 This is a cross-sectional structural schematic diagram of the kneading rotor according to some embodiments.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-The body;

[0026] 2- Kneading rotor;

[0027] 21-Shaft;

[0028] 22- Knead the blades;

[0029] 3-Indenter;

[0030] 4-Temperature regulating chamber;

[0031] 41-Temperature control chamber;

[0032] 5-Power components;

[0033] 6-Flue gas collection interface;

[0034] 7-Feed inlet. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0036] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other words can achieve the same purpose, they may be replaced by other expressions.

[0037] Flowcharts are used in this specification to illustrate the operations performed by the system according to embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0038] It is understood that the technical terms that may be involved in the description of this specification, such as “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the implementation method 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. Therefore, they should not be construed as limiting the scope of protection of the utility model.

[0039] It should be noted that the use of terms such as "first" and "second" to define features in this article is merely for the purpose of distinguishing the corresponding features. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0040] In the description of this specification, it should also be noted that, unless otherwise expressly specified or limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium, or a connection within two components, etc. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0041] This specification provides an embodiment of a kneading device, which includes a body defining a working chamber. At least two kneading rotors are disposed at the bottom of the working chamber, and a pressure head is disposed at the top of the working chamber, located above the kneading rotors. The pressure head is movable within the working chamber, and along its movement path, it has a feeding position and a working position. The feeding position is away from the kneading rotors, and the working position is close to the kneading rotors. When the pressure head is in the feeding position, it feeds material, which, due to gravity, settles at the bottom of the working chamber.

[0042] When the pressure head is in the working position, a kneading zone is formed between the pressure head and the bottom of the working chamber, where the kneading rotor operates. The pressure head compresses the material relative to the bottom of the working chamber, and the kneading rotor is located between the pressure head and the bottom of the working chamber. The kneading rotor has a rotation axis, and on the rotation section perpendicular to the rotation axis, the shape of the kneading zone conforms to the area swept by the rotating kneading rotor, thus defining a kneading zone that is compatible with the area swept by the rotating kneading rotor. Material within the kneading zone can interact with the kneading rotor, resulting in uniform kneading under its action. This improves the mixing effect of the material in the working chamber, ensuring the performance and quality of subsequent graphite products.

[0043] Taking the mixing of carbon powder and asphalt as an example, if the kneading is insufficient, carbon powder with a particle size of less than 10μm easily agglomerates, and the smaller the carbon powder particles, the easier it is to agglomerate. The agglomerated powder is wrapped by an asphalt film, and after molding, calcination, and graphitization, it forms agglomerated graphite microcrystals. When the graphite products are in operation, the graphite microcrystals on the working surface are easily detached and powdered when subjected to external factors such as thermal shock, friction, and nuclear radiation, eventually leading to damage. However, the kneading device involved in this utility model, when mixing materials, the inner wall surface of the working chamber, the working surface of the kneading rotor, and the lower side of the pressure head near the kneading rotor cooperate to squeeze and knead the materials, which can break up the agglomeration of carbon powder, so that each carbon powder particle can be fully integrated with the asphalt, improve the quality of graphite products, achieve the ultra-fine structure of graphite products, and enhance the competitiveness of domestic graphite products. In some embodiments, the kneading device is used for mixing carbon powder and asphalt. It is understood that the kneading device is not limited to the application of mixing toner and asphalt. Based on the structure and working principle of the kneading device described in this manual, it can be applied to a wider range of work scenarios. Further details about the kneading device will be provided below with reference to the accompanying drawings.

[0044] Figure 1 This is a schematic diagram of the kneading device according to some embodiments. Figure 2 This is a schematic diagram of the kneading device according to some other embodiments.

[0045] like Figure 1 and Figure 2 As shown, the kneading device includes a body 1, which defines a working chamber 11. Specifically, the body 1 is a solid structure with a cavity, and the body 1 surrounds and forms the working chamber 11. In some embodiments, the kneading device further includes a temperature-regulating chamber 4, which extends along a portion of the body 1, and the temperature-regulating chamber 4 and the body 1 define a temperature-regulating chamber 41.

[0046] At least two kneading rotors 2 are provided at the bottom of the working chamber 11, and the material is placed at the bottom of the working chamber 11. Since the area swept by the rotating kneading rotor 2 is a circular area or a similar circular area, in order to ensure that the material can fully interact with the kneading rotor 2, the bottom of the working chamber 11 is formed with an arc-shaped depression that adapts to the area swept by the rotating kneading rotor 2, so as to limit the kneading area that is adapted to the working range of the kneading rotor 2.

[0047] Figure 1 The diagram shows two kneading rotors 2. The bottom of the working chamber 11 is adapted to the area swept by the rotation of the two kneading rotors 2, and has two concave arc-shaped depressions extending along the rotation axis of the kneading rotors 2. It can be understood that more kneading rotors 2 can be arranged within the working chamber 11, with the inner wall of the working chamber 11 extending along the edge of the area swept by more kneading rotors 2 to form a kneading area adapted to the working range of the kneading rotors 2. For ease of description, this specification continues to use two kneading rotors 2 as an example.

[0048] A pressure head 3 is installed on the upper part of the working chamber 11. The pressure head 3 is a component that applies pressure to the material. The pressure head 3 is located above the material in the working chamber 11, and also above the kneading rotor 2 in the working chamber 11. The pressure head 3 can move within the working chamber 11 to approach or move away from the kneading rotor 2.

[0049] In some embodiments, the pressure head 3 is connected to at least two power components 5. Driven by these power components 5, the pressure head 3 moves within the working chamber 11, enhancing the stability of its movement and ensuring that sufficient pressure is applied to the material during the kneading process. In some embodiments, the connection position between the power components 5 and the pressure head 3 corresponds to the rotation of the kneading rotor 2. Specifically, the vertical projection of the connection position between the power components 5 and the pressure head 3 coincides with the rotation axis of the kneading rotor 2, thereby achieving stable and uniform pressure output from the pressure head 3 to all materials within the working chamber 11. In some embodiments, the power components 5 are, for example, servo hydraulic cylinders or electric ball screw mechanisms. In some embodiments, the power components 5 are fixedly mounted on the top of the machine body 1, and mounting holes for the power components 5 are correspondingly provided on the top of the machine body 1.

[0050] Similar to the downward-facing arc-shaped depression at the bottom of the working chamber 11 that corresponds to the area swept by the rotating kneading rotor 2, the pressure head 3, near the side of the kneading rotor 2 (i.e., its lower side), forms an upward-facing arc-shaped depression that corresponds to the area swept by the rotating kneading rotor 2. This arc-shaped depression extends along the rotation axis of the kneading rotor 2 to limit the kneading area to correspond to the working range of the kneading rotor 2. Figure 1 As shown, the lower side of the pressure head 3 is adapted to the area swept by the rotation of the two kneading rotors 2, and has two concave arc surfaces.

[0051] The pressure head 3 moves along its path within the working chamber 11, and has a feeding position and a working position. Figure 1 The pressure head 3 shown is in its working position. Figure 2 The pressure head 3 shown is located at its feeding position. The feeding position is away from the kneading rotor 2, and the working position is close to the kneading rotor 2. In some embodiments, a feeding port 7 is provided on the machine body 1, which is a channel connecting the outside of the machine body 1 and the inside of the working chamber 11. In some embodiments, the feeding port 7 has an outward extension structure to facilitate feeding. In some embodiments, the feeding port 7 is located below the feeding position of the pressure head 3, and the pressure head 3 is raised to the feeding position under the drive of the power component 5, and the material enters the inside of the working chamber 11 from the feeding port 7. The feeding port 7 is located above the working position of the pressure head 3, and the pressure head 3 is raised to the feeding position under the drive of the power component 5 to squeeze the material, preventing the material from overflowing from the feeding port 7 during the kneading process.

[0052] When the pressure head 3 is in the working position, a kneading area for the kneading rotor to work is formed between the lower side of the pressure head 3 and the bottom of the working chamber 11.

[0053] Figure 2 This is a schematic diagram of the kneading rotor according to some embodiments.

[0054] like Figure 2 As shown, the kneading rotor 2 has a rotating shaft 21 and at least two kneading blades 22. The rotating shaft 21 has a rotation axis, and the kneading blades 22 are fixed on the rotating shaft 21. The rotating shaft 21 can rotate about the rotation axis, driving the kneading blades 22 to rotate. The kneading blades 22 squeeze, grind, and knead the material. On the rotational cross section perpendicular to the rotation axis, the kneading area is adapted to the shape of the area swept by the rotating kneading rotor 2.

[0055] In some embodiments, see Figure 1 To reduce the impact of the heat generated by the rotating shaft 21 on the material in the kneading area, a heat dissipation channel 211 is provided on the rotating shaft 21. The heat dissipation channel 211 extends along line 21 of the rotating shaft 21 and passes through the rotating shaft 21. The heat dissipation channel 211 is connected to the outside of the machine body 1, and the heat of the rotating shaft 21 can be discharged to the outside of the machine body 1 through the heat dissipation channel 211.

[0056] In some embodiments, see Figure 1 The shortest distance between the far end of the kneading blade 22 away from the rotating shaft 21 and the inner wall of the working chamber 11 and the lower side of the pressure head 3 located in the working position is close to or consistent with the shortest distance, so that the kneading blade 22 can squeeze, grind and knead all the materials in the kneading area, so that the materials are fully mixed.

[0057] In some embodiments, see Figure 1The working surface of the kneading blade 22 includes a first arc surface and a second arc surface. Both the first and second arc surfaces extend from the rotating shaft 21 in a direction away from the rotating axis and gradually converge and intersect to form the kneading ribs of the kneading blade 22. The cross-section of the kneading blade 22 perpendicular to the rotating axis forms a triangle-like shape. The working surface of the kneading blade 22 can form an angled area with the wall of the working chamber 11 and the lower side of the pressure head 3. The material fills the angled area under the pressure of the pressure head 3. The kneading blade 22 squeezes and grinds the material in the angled area, and the material in the angled area can be kneaded on the working surface of the arc-shaped kneading blade 22, improving the kneading effect of the kneading blade 22 on the material.

[0058] In some embodiments, the kneading ribs are spirally distributed around the rotation axis, with a spiral angle of 5° to 30° between the extending direction of the kneading ribs and the extending direction of the rotation axis. The spirally distributed kneading ribs can agitate the material, enhance the movement amplitude of the material in the kneading area, and improve the mixing effect of the kneading rotor 2 on the material. In some embodiments, the spiral angle between the extending direction of the kneading ribs and the extending direction of the rotation axis is 10° to 20°.

[0059] It should be noted that the curvature of the kneading blade 22 is set according to the kneading requirements of the material. The helical structure of the kneading blade around the axis of rotation can be set as a single piece or multiple segments, depending on the size of the machine body and the processing difficulty.

[0060] In some embodiments, at least two kneading rotors 2 rotate in opposite directions, so as to Figure 1 Taking the two kneading rotors 2 shown as an example, the left kneading rotor 2 rotates clockwise and the right kneading rotor 2 rotates counterclockwise, so that at least two kneading rotors 2 generate opposite movements. Under the drive of the kneading rotors 2, the material is simultaneously mixed, squeezed and kneaded by at least two kneading rotors 2, which is beneficial to improving the kneading effect.

[0061] In some embodiments, to further enhance the kneading effect, at least two kneading rotors 2 can mesh with each other, increasing the compression of the material between the at least two kneading rotors 2. In some embodiments, to further enhance the kneading effect, at least two kneading rotors 2 can be tangential, that is, the distal ends of the two kneading rotors 2 approach each other, increasing the compression of the material between the at least two kneading rotors 2 and increasing the movement amplitude of the material between the at least two kneading rotors 2.

[0062] In some embodiments, to further enhance the kneading effect, the rotation direction of the kneading rotor 2 is adjusted at regular intervals. In some embodiments, to further enhance the kneading effect, the kneading rotor 2 and the power component 5 are equipped with higher power. As an example only, the rotation speed of the kneading rotor 2 ranges from 30 to 75 rpm, and the pressure exerted on the material by the pressure head 3 under the drive of the power component 5 ranges from 3 to 7 kg / cm².2 In some embodiments, the kneading time is set to be longer to further enhance the kneading effect. In some embodiments, the pressure applied to the material by the pressure head 3 is greater to further enhance the kneading effect.

[0063] In some embodiments, the materials include asphalt and carbon powder. Asphalt begins to flow at temperatures above its softening point; the higher the temperature, the better the flow. However, at higher temperatures, small organic molecules in the asphalt will volatilize, and large organic molecules will break down into smaller molecules that volatilize, causing the asphalt to age. To provide a suitable material kneading temperature, after the asphalt and carbon powder reach the appropriate kneading temperature, the kneading rotor 2 adjusts and kneads the material. During kneading, the rotation of the kneading rotor 2 compresses, grinds, and rubs the material, generating a large amount of heat. To prevent asphalt molecules from volatilizing and aging, and to maximize the effective kneading time, it is necessary to ensure that the material temperature does not rise, or rises only slightly. Therefore, in some embodiments, the kneading device also includes a temperature-regulating chamber 4, which extends along a portion of the machine body 1, defining a temperature-regulating chamber 41 with the machine body 1.

[0064] In some embodiments, the temperature-regulating chamber 41 at least surrounds the kneading area. To enhance the temperature-regulating effect of the temperature-regulating chamber 41, the temperature-regulating chamber 41 surrounds the working chamber 11 with the largest possible area. In some embodiments, the temperature-regulating chamber 41 is a channel extending at least along the kneading area. After the asphalt and carbon powder enter the working chamber 11, in order to make the asphalt and carbon powder reach a suitable kneading temperature, the temperature-regulating chamber 41 enters a preheating state. A high-temperature liquid, such as high-temperature oil, is passed through the temperature-regulating chamber 41 to heat the machine body 1 and the material. When the material reaches a suitable kneading temperature, the flow of the high-temperature liquid is stopped. In the kneading state, a low-temperature liquid, such as low-temperature oil, is passed through the temperature-regulating chamber 41 to remove heat. In some embodiments, the high-temperature liquid and the low-temperature liquid are supplied by an external liquid circulation system. The temperature-regulating chamber body 4 is provided with an inlet and an outlet on either side of the working chamber 11. The high-temperature liquid and the low-temperature liquid enter from the inlet and exit from the outlet in the preheating state and the kneading state, respectively, to achieve preheating and cooling of the kneading area.

[0065] In some embodiments, a flue gas collection interface 6 is provided on the top of the body 1 for connecting a flue gas collection pipe.

[0066] In some embodiments, the bottom of the machine body 1 is provided with a discharge port for discharging the mixed material.

[0067] This utility model also relates to a kneading method, which is implemented using the kneading device described in the above embodiments. The kneading method includes: when the pressure head is in the feeding position, the material enters the working chamber; the pressure head is adjusted to the working position, the kneading rotor rotates, and under the pressing action of the pressure head, the material is kneaded evenly in the kneading area.

[0068] In some embodiments, the kneading method further includes: controlling the high-temperature liquid to pass through the temperature-regulating chamber before the material enters the working chamber; controlling the high-temperature liquid to pass through the temperature-regulating chamber during the kneading process in the kneading area.

[0069] In the production of large or extra-large graphite products, the quality of material kneading is a key factor determining the quality of the graphite products. Under the powerful kneading of the kneading device provided in this manual, each carbon powder particle is uniformly coated with an asphalt film, and simultaneously, under strong extrusion, the asphalt fills the pores of the carbon powder particle itself. The kneading device provided in this manual can meet the requirements for high-intensity extrusion, grinding, and kneading of materials.

[0070] The basic concepts have been described above. It is clear that the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification, especially for those skilled in the art. Furthermore, unless expressly stated in the claims, the order of elements and sequences, the use of numbers and letters, or other names in this specification are not intended to limit the order of the processes and methods described herein. Although various examples of utility model embodiments that are currently considered useful have been discussed in the foregoing disclosure, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. Rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments described herein.

Claims

1. A kneading device, characterized in that, The kneading device includes: The body defines the working chamber; At least two kneading rotors are disposed at the bottom of the working chamber; A pressure head is disposed on the upper part of the working chamber. The pressure head is movable in the working chamber. On the movement path, the pressure head has a feeding position and a working position. The feeding position is away from the kneading rotor, and the working position is close to the kneading rotor. When the pressure head is in the working position, a kneading area for the kneading rotor to work is formed between the pressure head and the bottom of the working chamber. The kneading rotor has a rotation axis, and on a rotation section perpendicular to the rotation axis, the shape of the kneading area is adapted to the shape of the area swept by the rotation of the kneading rotor.

2. The kneading device according to claim 1, characterized in that, The pressure head has an arc-shaped depression on one side near the at least two kneading rotors that corresponds to the area swept by the rotation of the kneading rotors, and the bottom of the working chamber has an arc-shaped depression that corresponds to the area swept by the rotation of the kneading rotors.

3. The kneading device according to claim 1 or 2, characterized in that, The kneading rotor includes at least two kneading blades, and the working surface of the kneading blades includes a first arc surface and a second arc surface. Both the first arc surface and the second arc surface extend away from the axis of rotation and gradually converge and intersect to form the kneading ribs of the kneading blade.

4. The kneading device according to claim 3, characterized in that, The extending direction of the kneading ribs forms a helical angle of 5° to 30° with the extending direction of the rotation axis.

5. The kneading device according to claim 1 or 2, characterized in that, The at least two kneading rotors are capable of meshing with each other.

6. The kneading device according to claim 1 or 2, characterized in that, The at least two kneading rotors are tangential.

7. The kneading device according to claim 1 or 2, characterized in that, The at least two kneading rotors rotate in different directions.

8. The kneading device according to claim 1 or 2, characterized in that, The kneading device further includes a temperature regulating chamber that extends along a portion of the machine body. The temperature regulating chamber and the machine body define a temperature regulating chamber that at least surrounds the kneading area. In the preheating state, a high-temperature liquid passes through the temperature regulating chamber to heat the machine body. In the kneading state, a low-temperature liquid passes through the temperature regulating chamber to remove heat.

9. The kneading device according to claim 1, characterized in that, It also includes at least two power components connected to the pressure head, which moves within the working chamber under the drive of the at least two power components.

10. The kneading device according to claim 1, characterized in that, The machine body is provided with a feed port, which is located between the feed position and the working position of the pressure head.

11. The kneading device according to claim 1, characterized in that, The kneading device is used to mix carbon powder and asphalt.