A kind of body material kneading equipment applied to electric porcelain production

Abstract

The present application relates to the technical field of ceramic processing, and particularly relates to a body material kneading equipment applied to electric porcelain production, which comprises a rack, a feeding box, a vacuum box and a discharging pipe are arranged on the rack, a double auger feeding structure is arranged in the feeding box; a filter mixer is arranged between the feeding box and the vacuum box, the filter mixer comprises filter discs and filter screens which are distributed along a material feeding path, a rolling part is arranged in a gap area close to the filter disc in the inner cavity of the feeding box, the outer contour of the rolling part is larger than the distance between the end of the spiral blade on the first spiral extrusion rod and the filter disc, under the abutting cooperation of the end spiral blade spinning of the auger in the feeding box and the front side surface of the filter disc, the rolling part wrapped by the advancing body material can reciprocate, and a kneading structure is formed. The present application is favorable for solving the problem that the current some kneading machines are difficult to fully crush and stir the body material and discharge the internal bubbles due to the feeding stroke constraint of the auger, and the same batch of body material needs to be repeatedly kneaded for many times.

Description

Technical Field

[0001] This invention relates to the field of ceramic processing technology, and more specifically to a raw material preparation equipment for the production of electrical porcelain. Background Technology

[0002] Electrical porcelain is a type of ceramic material used for electrical insulation and is widely used in power equipment, such as insulators and bushings. To ensure that electrical porcelain products possess good electrical properties and mechanical strength, special attention must be paid to the processing of the raw materials. The clay preparation process for electrical porcelain raw materials is one of the important steps in manufacturing high-quality electrical porcelain products, requiring processes such as raw material proportioning and mixing, wet and dry grinding, aging, dehydration, and clay preparation.

[0003] Currently, existing porcelain blank mixing equipment typically involves manually pouring the clay blanks into the mixing machine and extruding them using an auger. However, this traditional method has many drawbacks. Due to the limited feeding stroke of the auger, it is difficult to fully crush and mix the clay during the spiral extrusion process, resulting in insufficient removal of air bubbles from the clay. The same batch of clay often needs to undergo repeated processing to achieve a uniform state that meets the requirements of subsequent porcelain production. This not only increases production time and costs but also reduces production efficiency, failing to meet the requirements of modern large-scale porcelain production. Therefore, developing a new type of porcelain blank mixing equipment that can effectively solve the above problems is of significant practical importance. Summary of the Invention

[0004] This invention provides a raw material kneading equipment for the production of electrical porcelain, which helps to solve the problem that some kneading machines are currently constrained by the feeding stroke of the auger, making it difficult to fully crush and mix the clay and fully remove internal air bubbles during the spiral extrusion feeding process, requiring the same batch of clay to be kneaded repeatedly.

[0005] This invention is implemented as follows: A raw material refining device for electric porcelain production includes a frame. The frame is equipped with a feed box, a vacuum box, and a discharge pipe. The feed box has a feed inlet at its input end and a feed pipe at its output end. The output end of the feed pipe is connected to the input end of the vacuum box, and the output end of the vacuum box is connected to the input end of the discharge pipe. The feed box contains a first spiral extruder and a second spiral extruder forming a double-auger feeding structure. A third spiral extruder is located between the output end of the vacuum box and the output end of the discharge pipe. The first, second, and third spiral extruders are connected to a drive mechanism on the frame. The device is connected by a transmission mechanism; the first spiral extruder passes through the feed pipe, and a mixer is provided at the connection between the feed pipe and the vacuum box. The mixer includes filter discs and filter screens distributed at intervals along the material flow path. Several filter holes are evenly distributed on the filter discs. A rolling element is provided in the gap area of ​​the inner cavity of the feed pipe near the filter disc. The outer contour of the rolling element is larger than the distance between the end of the spiral blade on the first spiral extruder and the filter disc. Under the combined action of the spiral blade at the end of the first spiral extruder spinning and the abutment of the front end face of the filter disc, the rolling element, which is wrapped by the moving mud in the inner cavity of the feed pipe, can reciprocate within the threshold range to form a material compaction structure.

[0006] Based on the above technical solution, the main body of the feeding box has a rectangular cross-sectional profile, and the discharge pipe is a lateral outward extension of the main body of the feeding box, so that the overall cross-sectional profile of the feeding box has a "P"-shaped structure; the feeding port is located at the top of the main body of the feeding box.

[0007] Based on the above technical solution, the first spiral extruder includes a first feeding module and a second feeding module distributed back and forth along its axial direction. The first feeding module located in the inner cavity of the feed box body is composed of several reamers arranged in a row. Each reamer has an inclined reamer blade on its outer peripheral surface. The second feeding module located in the inner cavity of the feed tube is composed of several spiral blades. The structure of the second spiral extruder is consistent with the structure of the feeding module part of the first spiral extruder.

[0008] Based on the above technical solution, the rolling element is a sphere or an ellipsoid.

[0009] Based on the above technical solution, the main body of the filter mixer is a circular ring structure, the filter disc and filter screen are located on its axial front and rear sides, and a filter mixing bearing is provided at the radial center of the filter disc and filter screen, through which the shaft of the first spiral extrusion rod passes.

[0010] Based on the above technical solution, the longitudinal profile of the filter disc is a "<" shaped structure with a central opening.

[0011] Based on the above technical solution, the filter holes on the filter disc are divided into several groups, and the filter holes in the same group are distributed at intervals along the radial direction of the filter disc in an arc path. Each group of filter holes is provided with a guide plate on one side. One end of the guide plate is connected to the rear end face of the filter disc, and the other end of the guide plate is a curved extended guide plate structure that covers the rear of the filter holes in that group.

[0012] Based on the above technical solution, the first spiral extruder is provided with several mixers spaced apart along the axial direction of the first spiral extruder in the second conveying module area, and each mixer has a rolling element on the front side of the filter disc.

[0013] Based on the above technical solution, the outer surface of the rolling element is provided with a rounded concave-convex texture.

[0014] Compared with the prior art, the present invention has at least the following advantages: 1. This invention innovates and upgrades the structure of traditional mud-grinding machines. Without increasing the size of the equipment, it cleverly sets up a mixing filter. A rolling element is set between the spiral blades at the end of the spiral extrusion rod and the filter disc of the mixing filter. The rolling element can make reasonable use of the axial pushing of the spiral blades, the blocking and interception of the filter disc, and the wrapping and linkage of the moving mud. Under the synergistic influence of these multiple factors, the rolling element further forms a tamping structure on the basis of the spiral movement and mixing of mud. Together with the filter disc and filter screen in the mixing filter, it improves the mixing effect and helps to evenly disperse and mix the mud, remove internal air bubbles, and greatly reduce the frequency of existing repeated mud-grinding operations.

[0015] 2. The mixer in this invention employs a double-layered filtration structure with alternating front and rear layers. The filter disc at the front uses its pores to filter the mud, intercepting large particles and dry lumps at the front end. Simultaneously, the filter disc also refines and diverts the mud passing through, completing the initial homogenization and mixing. This process optimizes the mixing and agglomeration of the mud compared to traditional processes. The filter screen at the rear abandons the traditional filtration effect, utilizing its own mesh structure to form a differentiated interception structure with the filter pores at the front. This allows the mud, which has already undergone initial homogenization and mixing, to undergo a second refinement and diversion after a brief mixing period, further enhancing the secondary homogenization and mixing. Therefore, high-quality mixing and agglomeration can be achieved without significantly increasing the length of the spiral extruder.

[0016] 3. In the present invention, during the material mixing process, the rolling element has the opportunity to laterally squeeze and push large particles or dry material blocks intercepted by the filter holes, thereby clearing the filter hole blockage, ensuring the normal filtration function of the filter mixer, and further improving the stability and reliability of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a raw material refining device used in the production of electrical porcelain, as shown in one embodiment. Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 1 Top view of the internal structure of the feed box and the vacuum chamber; Figure 4 This is a partial schematic diagram showing the distribution of the rolling elements; Figure 5 This is a partial structural diagram of the first spiral extruder in its feeding state; Figure 6 for Figure 5 A simplified diagram illustrating the movement of the rolling element; Figure 7 for Figure 5 A three-dimensional structural diagram of a medium-mix filter; Figure 8 for Figure 7 A sectional view; Figure 9 This is a schematic diagram of a partial structure on the back of a mixing filter; Figure 10 A front view of the filter disc in another embodiment; Figure 11 for Figure 10 A simplified diagram showing the material flow status of a single filter hole in the intermediate filter disc; Figure 12 This is a schematic diagram of the installation structure of the filter mixer in another embodiment.

[0019] The diagram is labeled as follows: 100, base; 110, first drive motor; 120, second drive motor; 200, feed box; 210, feed pipe; 300, vacuum box; 400, discharge pipe; 410, pressing roller; 411, third drive motor; 500, first spiral extruder; 510, first feeding module; 511, reamer blade; 520, second feeding module; 521, spiral blade; 530, extension shaft; 600, second spiral extruder; 700, third spiral extruder; 800, mixer; 810, filter disc; 811, filter holes; 812, guide plate; 820, mixing bearing; 830, filter screen; 900, rolling element; a, feed chamber; b, feeding chamber; c, vacuum chamber; d, discharge chamber; t, moving mud. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] In the description of this invention, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: Combination Figures 1 to 9 As shown in the figure, this embodiment discloses a raw material mixing equipment for the production of electrical porcelain. The equipment mainly includes a frame, a feed box 200, a vacuum box 300, a discharge pipe 400, a first spiral extruder 500, a second spiral extruder 600, a third spiral extruder 700, and a filter mixer 800.

[0025] The frame, serving as the supporting structure for the entire equipment, is constructed using metal profiles (such as galvanized iron, aluminum alloy, and stainless steel) to form the base. These metal profiles possess high strength and good stability, providing robust support for other components of the equipment. This ensures the stability and reliability of the equipment during operation, reduces errors caused by vibration, and guarantees the quality of the slurry.

[0026] like Figure 1As shown, the feed hopper 200 is mounted on the base 100. Its main body has a rectangular cross-sectional profile, and the discharge pipe 400 is a lateral extension of the feed hopper 200, resulting in a "P"-shaped overall cross-sectional profile. The feed inlet is located at the top of the feed hopper 200. This design facilitates feeding operations, allowing external mud to be smoothly poured into the feed hopper 200, improving feeding efficiency and reducing spillage during the feeding process. It should be noted that the feed inlet can be an open design or equipped with a hinged cover.

[0027] Combination Figure 2 As shown, the inner cavity of the output end of the feed box 200 is the feed chamber a, and guide ramps are provided on the two inner walls of the feed inlet. The guide ramps can guide the mud into the feed chamber a smoothly, avoiding the accumulation or blockage of mud at the feed inlet and ensuring the smoothness of the feed. Strip-shaped baffles are provided on the side wall below the guide ramps. Several baffles are distributed at intervals along the material feeding direction, and the gaps correspond to the gaps of adjacent reamer blades 511, forming a staggered and intersecting relationship. When the reamer blades 511 pass through the baffle area during rotation, the baffles can peel off the mud adhering to the reamer blades 511 and drop it into the feed chamber a, preventing the mud from accumulating on the reamer blades 511 and affecting the normal operation and crushing effect of the reamer, while ensuring the uniformity of the mud in the feed chamber a. The structure of the above-mentioned baffles is prior art. For the specific structure and working principle, please refer to the relevant content in patent CN202420852240.3.

[0028] The inner cavity of the feed box 200 near the vacuum box 300 is the feeding chamber b, and the front and rear ends of the feeding chamber b are connected to the feed chamber a and the vacuum chamber c inside the vacuum box 300.

[0029] The first spiral extruder 500 and the second spiral extruder 600 are disposed within the feed box 200, forming a double-auger feeding structure. Both are synchronously connected to the first drive motor 110, which is located on one side of the top of the base 100. Its output end, via a conventional transmission structure such as a transmission gear or chain within the transmission box, enables the first spiral extruder 500 and the second spiral extruder 600 to rotate in opposite directions at equal speeds. This double-auger feeding structure increases the conveying capacity and mixing effect of the mud, allowing the mud to undergo preliminary mixing and crushing within the feed box 200, preparing it for subsequent mud-grinding processes.

[0030] The rear region of the first spiral extruder 500 penetrates the feed pipe 210, and the axial end of the first spiral extruder 500 extends into the vacuum chamber 300, connecting to the side wall of the vacuum chamber 300 via an extension shaft 530 and a bearing. The first spiral extruder 500, located in the feed chamber a and feeding chamber b regions, includes a first feeding module 510 and a second feeding module 520 distributed longitudinally along its axial direction. The first feeding module 510, located within the main cavity of the feed chamber 200, is composed of several reamers arranged in a circular pattern. Each reamer has an inclined reamer blade 511 on its outer circumferential surface. In this embodiment, each reamer has two centrally symmetrical reamer blades 511 on its outer outer wall, i.e., a double-bladed structure. Because the reamer blades 511 are inclined, during discontinuous agitator rotation, the reamer blades 511 generate a conveying force on the mud, moving it towards the feeding chamber b. Meanwhile, the sharp cutting edges of the reamer blades 511 facilitate the chopping and breaking down of the mud entering the feed chamber a, decomposing large pieces of mud into smaller particles, providing a good foundation for subsequent mixing and slurry preparation processes. Furthermore, the tightly fitted arrangement of these reamers allows for flexible combination in terms of quantity according to the equipment length, improving assembly flexibility. During subsequent maintenance, components can be easily disassembled for partial replacement, reducing downtime caused by maintenance work and improving the maintainability and service life of the equipment. The second feeding module 520, located within the feed pipe 210, consists of several spiral blades 521. These spiral blades 521 further propel the mud forward, ensuring smooth conveying of the mud within the feeding chamber b.

[0031] The vacuum chamber 300 is mounted on the base 100 and located behind the feed box 200. Its input end is connected to the output side of the feed box 200 via the feed pipe 210, and its output end is connected to the input end of the discharge pipe 400. The side wall of the vacuum chamber 300 is connected to an external vacuum machine via pipe fittings, enabling its internal cavity to become a vacuum chamber c. During the clay refining process, the vacuum chamber 300 provides a vacuum environment for the clay, which facilitates the removal of air bubbles and improves the density of the clay, thereby enhancing the electrical performance and mechanical strength of the electrical porcelain products. It should be noted that this is prior art; its specific structure and working principle can be found in the relevant content of patent CN202420852240.3. Those skilled in the art can select and implement the appropriate model from the prior art based on actual operating conditions.

[0032] The discharge pipe 400 is mounted on the base 100 and located at the bottom of the vacuum chamber 300, with its inner cavity serving as the discharge chamber d. The output end of the discharge pipe 400 is used to output the fully kneaded clay for subsequent electrical porcelain production processes. A third spiral extruder 700 is positioned between the output end of the vacuum chamber 300 and the output end of the discharge pipe 400, and is connected to the second drive motor 120 on the frame. The third spiral extruder 700 further extrudes and conveys the vacuum-treated clay, ensuring that the clay reaches the required density and quality before discharge. (Reference) Figure 3 As shown, in order to ensure the stability of material feeding, a pressing roller 410 is provided on one side of the bottom of the vacuum chamber c in the discharge chamber d. One end of the pressing roller 410 extends axially to the outside of the discharge pipe 400 and is connected to the third drive motor 411 for transmission. During the rotation process, the pressing roller 410 can push the mud material located on one side of the third spiral extrusion rod 700 into the feeding area of ​​the third spiral extrusion rod 700.

[0033] To alleviate the problem of "dead mud" caused by mud stagnation in the inner cavity, the inner walls of the feeding cavity a, the conveying cavity b, and the discharge cavity d are equipped with inclined rifling. The rifling guides the moving mud t, directing it to flow orderly along the direction of the rifling before discharge, preventing mud from accumulating in the corners or on the walls of the inner cavity, ensuring smooth mud flow and normal operation of the equipment, and improving mud refining efficiency and mud quality.

[0034] Cooling ports are provided at the feeding chamber a, vacuum chamber c, and feeding chamber b. The outer ends of the cooling ports are connected to an external cooling mechanism via pipelines, which includes, but is not limited to, a cold water supply device. This multi-point cooling method can effectively control the temperature rise of the clay during the clay-making process, preventing moisture evaporation and the formation of dry clay. During the clay-making process, the friction between the clay and components such as the screw extruder and the inner cavity wall generates heat. If not cooled in time, the moisture in the clay will evaporate, causing the clay to dry out and affecting its plasticity and the quality of the clay. The cooling system can maintain the clay within a suitable temperature range, ensuring the stability of the clay-making process and the uniformity of the clay quality. In addition, this embodiment also uses point-to-point oil cooling (which has both lubrication and cooling effects) for each main shaft, including one or more screw extruders. The main shaft generates heat during long-term operation. The oil cooling system can remove the heat generated by the main shaft in time, while lubricating the main shaft, reducing wear, extending the service life of the main shaft, and ensuring the stable operation of the equipment.

[0035] Combination Figures 2 to 4 As shown, in this embodiment, the filter mixer 800 is located at the connection between the feed pipe 210 and the vacuum chamber 300, as indicated in the reference. Figure 7 As shown, the main body of the filter mixer 800 is a circular structure, which is locked and fixed to the housing of the vacuum chamber 300 by external screws during assembly. Figure 8 and Figure 9 As shown, the filter disc 810 and the filter screen 830 are located on the front and rear sides of the main body of the mixer 800. A mixing bearing 820 is provided at the radial center of the filter disc 810 and the filter screen 830 located in the main body of the mixer 800. The mixing bearing 820 is through which the shaft of the first spiral extrusion rod 500 passes, ensuring that the first spiral extrusion rod 500 can rotate smoothly, and at the same time providing stable support for the mixer 800.

[0036] Furthermore, such as Figure 8 As shown, the longitudinal profile of the filter disc 810 is a "<" shaped structure with a central opening. This structure facilitates the dispersion of some large particles from the radial interior to the radial exterior, ensuring material flow efficiency and preventing large particles from clogging the filter holes 811 and affecting the normal passage of the mud. Several filter holes 811 are evenly distributed on the surface of the filter disc 810, axially penetrating the filter disc 810 and forming a connecting filter material structure between the feeding chamber b and the vacuum chamber c.

[0037] The mixer 800 employs a double-layer filtration structure with alternating front and rear sections. The front filter disc 810 uses its filter holes 811 to filter the mud, intercepting large particles and dry material lumps at the front end. Simultaneously, the filter disc 810 also refines and diverts the mud passing through, completing the initial homogenization and mixing. This process optimizes the mixing and agglomeration effect of the mud compared to traditional processes. The rear filter screen 830 abandons the traditional filtration effect, using its own mesh structure to form a differentiated interception structure with the front filter holes 811. This allows the mud, which has already undergone initial homogenization and mixing, to undergo a second refinement and diversion after a brief mixing period, further enhancing the secondary homogenization and mixing. Therefore, high-quality mixing and agglomeration effects can be achieved without significantly increasing the length of the spiral extruder.

[0038] Combination Figures 3 to 6 As shown, a rolling element 900 is provided in the gap area near the filter disc 810 inside the feed pipe 210. The rolling element 900 is a sphere; in other embodiments, the rolling element 900 can be an ellipse. This rounded structure can help to relieve the axial compressive force of the spiral blade 521 and convert it into radial driving force, specifically as follows: Figure 6 As shown, Figure 6The dotted spiral line represents the rotation direction of the spiral blade 521 and the travel path of part of the moving mud material t. The rolling element 900 at p1 immediately comes into contact with the rear curved surface of the spiral blade 521 and the front end face of the filter disc 810 on both its front and rear sides. As the spiral blade 521 continues to rotate, it generates an axial backward thrust F1 on the rolling element 900. Because the sphere slides under the pressure of the curved surface, F1 is unloaded. A portion of the axial residual force is equal to the reaction force from the filter disc 810, causing the rolling element 900 to move axially... While maintaining its position (at the instant the rolling element 900 is clamped from the front and rear), another portion of the force redirects to become F2, driving the rolling element 900 to move radially. This displacement is radially opposite to the overall movement trend of the traveling mud material t in that region. Therefore, the rolling element 900 experiences relative displacement with its neighboring traveling mud material t during this process. Assuming it stops at point P2 (due to the resistance between the traveling mud material t and the rolling element 900 during its movement), the rolling element 900 will subsequently continue to follow the displacement of its neighboring traveling mud material t after stopping. Figure 6 (The movement is diagonally upward and to the right). Assuming it returns to position P1, the reciprocating path is repeated. It should be noted that the rolling element 900 can perform irregular, repetitive movements within a certain area, continuously tamping the material. In this embodiment, only a single rolling element 900 is used; in other embodiments, the number and size of the rolling elements 900 can be flexibly designed according to actual operational needs.

[0039] The reason why the rolling element 900 can achieve the above-mentioned action is that the outer contour of the rolling element 900 is larger than the distance between the end of the spiral blade 521 on the first spiral extrusion rod 500 and the filter plate 810. Under the synergistic action of the spinning of the end spiral blade 521 of the first spiral extrusion rod 500 and the abutment of the front end face of the filter plate 810, the rolling element 900, which is wrapped by the moving mud material t in the inner cavity of the feed pipe 210, can reciprocate within the threshold range to form a compaction structure. That is to say, referring to Figure 5When the helical blade 521 at the end of the first helical extruder 500 rotates, it generates an axial backward thrust on the mud, causing the mud inside the feed pipe 210 to move into the vacuum box 300. The rolling element 900, which has not yet contacted the helical blade 521, is enveloped by the surrounding moving mud t and moves backward along with it in a helical path. When the rolling element 900 reaches a certain position, the rear curved surface of the helical blade 521 continuously approaches the rolling element 900 during rotation, eventually contacting it. If the rear side of the rolling element 900 has not yet contacted the filter disc 810, it will continue to move backward until the rolling element 900 is simultaneously "clamped" by the rear curved surface of the helical blade 521 and the front face of the filter disc 810. As the helical blade 521 continues to rotate, its rear curved surface generates a radial lateral thrust on the rolling element 900, causing the rolling element 900 to retract radially. During this process, the rolling element 900 will move relative to the adjacent mud material it originally encloses. That is, the rolling element 900 will tamp the adjacent moving mud material t during this process, further breaking up the particles in the mud material and making the mud material more uniform. In addition, if large particles (or dry lumps with low moisture content) are trapped in the mud material and are intercepted by the filter holes 811, there is also a chance that they will be laterally squeezed and pushed by the rolling element 900, which will have the effect of clearing the blockage of the filter holes 811, ensuring the unobstructed flow of the filter holes 811, and maintaining the normal operation of the filter mixer 800.

[0040] By cleverly designing a mixer 800, a rolling element 900 is installed between the spiral blade 521 at the end of the spiral extruder and the filter disc 810 of the mixer 800. The rolling element 900 can make reasonable use of the axial pushing of the spiral blade 521, the blocking and interception of the filter disc 810, and the wrapping and linkage of the moving mud material t. Under the synergistic influence of these multiple factors, the rolling element 900 further forms a tamping structure on the basis of the spiral movement and mixing of mud material. Together with the filter disc 810 and filter screen 830 in the mixer 800, it improves the mixing effect and helps to evenly disperse and mix the mud material, remove internal air bubbles, and greatly reduce the frequency of the existing repeated mud kneading operations.

[0041] Working Principle: External mud is poured into the feed box 200 through the feed inlet. A guide plate guides the mud smoothly into the feed chamber a, preventing mud accumulation at the feed inlet. After entering the feed chamber a, the first spiral extruder 500 and the second spiral extruder 600 begin to rotate. The reamer blades 511 of the first feeding module 510 perform preliminary chopping and breaking down of the mud, decomposing large pieces into smaller particles. Simultaneously, a baffle plate peels mud adhering to the reamer blades 511, causing it to fall into the feed chamber a, ensuring the uniformity of the mud within the feed chamber a. The pre-crushed mud, under the synergistic action of the first spiral extruder 500 and the second spiral extruder 600, is conveyed to the vacuum box 300 through the feed pipe 210. Inside the feed pipe 210, as the mud passes through the filter 800, the filter disc 810 and the filter screen 830 perform dual filtration, intercepting large particles in front of the filter disc 810. Simultaneously, the helical blades 521 at the end of the first helical extruder 500 generate an axial backward thrust on the mud during rotation, causing the rolling element 900 to be enveloped and moved backward by the traveling mud t. When the rolling element 900 is "clamped" by the helical blades 521 and the filter disc 810, the rear curved surface of the helical blades 521 generates a radial lateral thrust on the rolling element 900, causing the rolling element 900 to retract radially and generate a tamping action on the adjacent traveling mud t, further breaking up the particles in the mud and making the mud more uniform. In addition, if large particles are trapped in the mud and intercepted by the filter holes 811, the rolling element 900 will laterally squeeze and push them to clear the blockage of the filter holes 811. After the mud enters the vacuum chamber 300, the vacuum environment inside the vacuum chamber 300 causes air bubbles in the mud to be expelled, improving the density of the mud. At the same time, the third helical extruder 700 further squeezes and conveys the mud, ensuring that the mud is fully processed in the vacuum chamber 300. The vacuum-treated mud is output through the discharge pipe 400 and enters the subsequent electrical porcelain production process. During equipment operation, the cooling system operates continuously, supplying cooling medium to the feed chamber a, vacuum chamber c, and feeding chamber b through cooling ports to control the temperature rise of the mud and prevent moisture evaporation and the formation of dry mud. Each spindle uses an oil cooling system for cooling and lubrication to ensure its normal operation.

[0042] Example 2: Based on Example 1, combined with Figure 10 As shown, the filter holes 811 on the filter disc 810 are divided into several groups, and the filter holes 811 in the same group are distributed at intervals along the radial direction of the filter disc 810 in an arc-shaped path. Each group of filter holes 811 has a guide plate 812 on one side, which, in conjunction with... Figure 11As shown, one end of the guide plate 812 is connected to the rear end face of the filter disc 810, and the other end is a curved extended guide plate 812 structure covering the rear of the filter holes 811. When the mud passes through the filter holes 811, this structure guides the mud passing through the filter holes 811 to form a turbulent motion, further improving the mixing effect. At the same time, it helps to fully expose the voids in the mud, promotes the expulsion of internal air, and improves the density and uniformity of the mud.

[0043] Example 3; Based on Example 1, combined with Figure 12 As shown, in this embodiment, the first spiral extruder 500 is located in the second conveying module area and is provided with several mixers 800 spaced apart along the axial direction of the first spiral extruder 500. Each mixer 800 has a rolling element 900 on the front side of its filter disc 810. This arrangement of multiple mixers 800 can increase the number of times the mud is filtered and agitated during the feeding process, further improving the crushing and mixing effect and the mixing quality of the mud, and ensuring that the mud reaches a better uniform state before entering the vacuum box 300.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A raw material mixing equipment for use in the production of electrical porcelain, characterized in that, The device includes a frame, on which a feed box (200), a vacuum box (300), and a discharge pipe (400) are provided. The feed box (200) has a feed inlet at its input end and a feed pipe (210) at its output side. The output end of the feed pipe (210) is connected to the input end of the vacuum box (300), and the output end of the vacuum box (300) is connected to the input end of the discharge pipe (400). The feed box (200) contains a first spiral extrusion rod (500) and a second spiral extrusion rod (600) that form a double auger feeding structure. A third spiral extrusion rod (700) is provided between the output end of the vacuum box (300) and the output end of the discharge pipe (400). The first spiral extrusion rod (500), the second spiral extrusion rod (600), and the third spiral extrusion rod (700) are connected to a drive device on the frame. The first spiral extruder (500) passes through the feed pipe (210). A mixer (800) is provided at the connection between the feed pipe (210) and the vacuum box (300). The mixer (800) includes a filter disc (810) and a filter screen (830) distributed at intervals along the material path. A number of filter holes (811) are evenly distributed on the filter disc (810). A rolling element (900) is provided in the gap area near the filter disc (810) in the inner cavity of the feed pipe (210). The outer contour of the rolling element (900) is larger than the distance between the end of the spiral blade (521) on the first spiral extruder (500) and the filter disc (810). Under the combined action of the spiral blade (521) at the end of the first spiral extruder (500) spinning and the abutment of the front end face of the filter disc (810), the rolling element (900) wrapped by the moving mud (t) in the inner cavity of the feed pipe (210) can reciprocate within the threshold range to form a tamping structure.

2. The raw material mixing equipment for electrical porcelain production according to claim 1, characterized in that, The main body of the feed box (200) has a rectangular cross-sectional profile, and the discharge pipe (400) is a lateral extension of the main body of the feed box (200) so that the overall cross-sectional profile of the feed box (200) is a "P"-shaped structure; the feed inlet is located at the top of the main body of the feed box (200).

3. The raw material mixing equipment for electrical porcelain production according to claim 2, characterized in that, The first spiral extruder (500) includes a first feeding module (510) and a second feeding module (520) distributed back and forth along its axial direction. The first feeding module (510) located in the inner cavity of the main body of the feed box (200) is composed of several reamers arranged together. Each reamer has an inclined reamer blade (511) on its outer peripheral surface. The second feeding module (520) located in the inner cavity of the feed pipe (210) is composed of several spiral blades (521). The structure of the second spiral extruder (600) is consistent with the structure of the feeding module part of the first spiral extruder (500).

4. The raw material mixing equipment for electrical porcelain production according to claim 1, characterized in that, The rolling element (900) is a sphere or an ellipsoid.

5. The raw material mixing equipment for electrical porcelain production according to claim 1, characterized in that, The main body of the filter mixer (800) is a circular ring structure. The filter disc (810) and the filter screen (830) are located on its axial front and rear sides. The filter disc (810) and the filter screen (830) are provided with a filter mixing bearing (820) at the radial center of the main body of the filter mixer (800). The filter mixing bearing (820) is through which the shaft of the first spiral extrusion rod (500) passes.

6. A raw material mixing equipment for electrical porcelain production according to claim 1 or 5, characterized in that, The longitudinal profile of the filter disc (810) is a "<" shaped structure with a central opening.

7. The raw material mixing equipment for electrical porcelain production according to claim 1, characterized in that, The filter holes (811) on the filter disc (810) are divided into several groups. The filter holes (811) in the same group are distributed in an arc path along the radial direction of the filter disc (810). Each group of filter holes (811) is provided with a guide plate (812) on one side. One end of the guide plate (812) is connected to the rear end face of the filter disc (810), and the other end of the guide plate (812) is a curved extended guide plate (812) structure that covers the rear of the group of filter holes (811).

8. The raw material mixing equipment for electrical porcelain production according to claim 3, characterized in that, The first spiral extruder (500) is located in the second conveying module area and has several mixers (800) spaced apart along the axial direction of the first spiral extruder (500). Each mixer (800) has a rolling element (900) on the front side of the filter disc (810).

9. The raw material mixing equipment for electrical porcelain production according to claim 4, characterized in that, The outer surface of the rolling element (900) is provided with a rounded textured surface.

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