Vacuum pug mill for laboratory

Abstract

The utility model relates to the technical field of laboratory equipment, and provides a vacuum pug mill for a laboratory, which comprises a transmission mechanism, a pug stirring mechanism, a vacuum pug milling mechanism and an extrusion mechanism, the transmission mechanism is used for driving the pug stirring mechanism, the vacuum pug milling mechanism and the extrusion mechanism to rotate synchronously; the mud stirring mechanism is independently arranged, and the vacuum pugging mechanism is communicated with the extrusion mechanism. According to the vacuum pug mill for the laboratory, the pug stirring mechanism and the vacuum pug milling mechanism are separately arranged, and the pug stirring mechanism and the vacuum pug milling mechanism can independently perform corresponding actions, so that intermittent and crossed production of the vacuum pug mill is realized, the flexibility of the vacuum pug mill is improved, meanwhile, the vacuum pug milling mechanism can mill pug for multiple times, and the pug milling efficiency is improved. The compactness and the plasticity of the pug are improved, and various requirements on the performance of the pug in the experiment process are met.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a vacuum pumice machine for laboratory use. Background Technology

[0002] Vacuum clay refining machines, as crucial equipment in modern ceramic material processing, consist of a core refining unit, a vacuum pump system, and auxiliary components for the vacuum chamber. They are primarily used for the homogenization and forming of clay materials in building bricks and tiles (including glazed bricks and tiles, blue bricks and tiles), industrial electrical porcelain, and daily-use ceramics. Operating on the principle of vacuum degassing, the equipment creates a negative pressure environment within the sealed chamber using a vacuum pump unit. Under preset vacuum conditions, it applies a combination of multi-directional shearing and axial extrusion to the plastic clay, ultimately extruding it through a specific mold to form a dense green body. Compared to traditional open-type clay refining processes, vacuum treatment effectively promotes the escape of air from the clay and ensures uniform moisture distribution, significantly improving the plasticity and forming stability of the green body. It offers technical advantages such as high process integration and strong production continuity.

[0003] However, in laboratory-level R&D scenarios for new formulations of building bricks and tiles and special ceramic materials, existing vacuum clay mixing systems have revealed significant compatibility issues. These issues are mainly manifested in the following ways: the structural dimensions and power configuration of industrial-grade equipment cannot match the needs of small-batch, multi-group cross-testing in the laboratory; during intermittent operation, there are technical bottlenecks such as excessively high minimum feed rates and difficulties in cleaning residual clay; simultaneously, the closed design of traditional screw extrusion mechanisms leads to low extraction efficiency of trace samples, and frequent start-stop cycles causing vacuum fluctuations further affect the reproducibility of experimental data. Utility Model Content

[0004] This invention provides a laboratory vacuum pumice machine to address the shortcomings of existing vacuum pumice machines that cannot meet the requirements of multi-group cross-testing.

[0005] This utility model provides a laboratory vacuum pumice machine, comprising: a transmission mechanism, a pumice stirring mechanism, a vacuum pumice mechanism, and an extrusion mechanism. The transmission mechanism is used to drive the pumice stirring mechanism, the vacuum pumice mechanism, and the extrusion mechanism to rotate synchronously. The pumice stirring mechanism is set separately, and the vacuum pumice mechanism is connected to the extrusion mechanism.

[0006] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the transmission mechanism includes: a driver; a transmission shaft, the transmission shaft being connected to the driver, the pumice stirring mechanism, the vacuum pumice mechanism, and the extrusion mechanism.

[0007] According to the present invention, a laboratory vacuum mud mixer is provided, wherein the mud mixing mechanism includes: a mud mixing chamber, the mud mixing chamber having a first cover that can be opened or closed, and a drive shaft passing through the mud mixing chamber; and a plurality of first blades disposed in the mud mixing chamber and connected to the drive shaft.

[0008] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the axis of the first blade is arranged perpendicular to the drive shaft, and the first blade is a straight blade or a fan-shaped blade.

[0009] According to the present invention, a laboratory vacuum mud mixer is provided, wherein the mud mixing chamber is rotatably connected to the drive shaft.

[0010] According to the present invention, a laboratory vacuum pumice machine is provided, the vacuum pumice mechanism comprising: a vacuum chamber, the vacuum chamber having a second cover that can be opened or closed, a drive shaft passing through the vacuum chamber, the vacuum chamber being connected to the extrusion mechanism; a plurality of second blades disposed in the vacuum chamber and connected to the drive shaft; and a vacuum pump connected to the vacuum chamber.

[0011] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the vacuum pumice mechanism further includes a pressure gauge, which is disposed in the vacuum chamber and is used to detect the pressure inside the vacuum chamber.

[0012] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the vacuum pumice mechanism further includes a sealing ring, the vacuum chamber has an opening, the second cover is disposed at the opening, and is sealed to the vacuum chamber through the sealing ring.

[0013] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the extrusion mechanism includes: an extrusion cylinder, one end of which is connected to the vacuum chamber, and the other end of which is provided with an extrusion port; a drive shaft passing through the extrusion cylinder; and a plurality of third blades disposed inside the extrusion cylinder and connected to the drive shaft.

[0014] According to the present invention, a laboratory vacuum pumice machine is provided, wherein the transmission mechanism further includes a controller, and the controller is electrically connected to the driver.

[0015] The laboratory vacuum pumice machine provided by this utility model separates the pumice mixing mechanism from the vacuum pumice mechanism, allowing each mechanism to perform its respective action independently. This enables intermittent and overlapping production, improving the flexibility of the vacuum pumice machine. Furthermore, the vacuum pumice mechanism can pumice the material multiple times, enhancing its density and plasticity, thus meeting various performance requirements during experiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the laboratory vacuum ply mill provided by this utility model.

[0018] Figure label:

[0019] 11. Driver; 12. Drive shaft; 13. Reducer; 14. Controller; 21. Mud mixing chamber; 22. First impeller; 211. First cover; 31. Vacuum chamber; 32. Second impeller; 33. Vacuum pump; 34. Sealing ring; 35. Pressure gauge; 311. Second cover; 41. Extrusion cylinder; 42. Third impeller; 411. Extrusion port. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] The following is combined Figure 1 This invention describes a laboratory vacuum ply mill.

[0022] like Figure 1 As shown in the embodiment of this utility model, the laboratory vacuum pumice machine includes: a transmission mechanism, a pumice mixing mechanism, a vacuum pumice mixing mechanism, and an extrusion mechanism. The transmission mechanism is used to drive the pumice mixing mechanism, the vacuum pumice mixing mechanism, and the extrusion mechanism to rotate synchronously. The pumice mixing mechanism is set separately, while the vacuum pumice mixing mechanism and the extrusion mechanism are connected.

[0023] In existing technology, the mixing chamber, vacuum chamber, and extrusion cylinder are connected. Powder and water are mixed in the mixing chamber to form mud, which then enters the vacuum chamber for refining. The refined mud then enters the extrusion cylinder and is extruded. The entire mud refining machine can only achieve continuous production of mud, and cannot produce it intermittently or in a cross-processing manner.

[0024] In this embodiment of the invention, driven by the transmission mechanism, the mixing mechanism separately stirs and mixes the powder with water. After the vacuum kneading mechanism kneads the clay, it pushes the clay to the extrusion mechanism for extrusion. In this embodiment, the mixing mechanism and the vacuum kneading mechanism are set up separately. If the density of the extruded clay is not satisfactory, the clay can be repeatedly fed into the vacuum kneading mechanism for kneading to improve the density and plasticity of the clay. Furthermore, the mixing mechanism and the vacuum kneading mechanism can simultaneously perform corresponding actions on different types of clay to achieve cross-production, or they can be activated only when needed for experiments to achieve intermittent production.

[0025] The laboratory vacuum pumice machine provided in this embodiment of the utility model separates the pumice mixing mechanism from the vacuum pumice mechanism, allowing each mechanism to perform its respective action independently. This enables intermittent and overlapping production, improving the flexibility of the vacuum pumice machine. Furthermore, the vacuum pumice mechanism can pumice the material multiple times, enhancing its density and plasticity, and meeting various performance requirements of the material during experiments.

[0026] like Figure 1 As shown, in an embodiment of this utility model, the transmission mechanism includes a driver 11 and a transmission shaft 12. The output shaft of the driver 11 is connected to the transmission shaft 12, and the transmission shaft 12 is connected to the mud-stirring mechanism, the vacuum mud-refining mechanism, and the extrusion mechanism. When the transmission shaft 12 rotates, it can drive the mud-stirring mechanism, the vacuum mud-refining mechanism, and the extrusion mechanism to rotate synchronously.

[0027] Furthermore, the transmission mechanism also includes a reducer 13, which is connected to the driver. Optionally, the driver 11 can be a motor.

[0028] Furthermore, the transmission mechanism also includes a controller 14, which is electrically connected to the driver 11 and is used to control the driver 11 to rotate or stop rotating.

[0029] like Figure 1 As shown in the embodiment of this utility model, the mud-stirring mechanism includes a mud-stirring chamber 21 and a plurality of first blades 22. The mud-stirring chamber 21 is provided with a first cover 211 that can be opened or closed to facilitate feeding or removing mud. A drive shaft 12 passes through the mud-stirring chamber 21, and the plurality of first blades 22 are disposed inside the mud-stirring chamber 21 and connected to the drive shaft 12. When the drive shaft 12 rotates, it drives the plurality of first blades 22 to stir and mix the powder and water to perform initial kneading of the mud.

[0030] In existing technologies, because the mixing chamber, vacuum chamber, and extrusion cylinder are interconnected, when powder is added to the mixing chamber, the powder easily clogs the vacuum chamber and even the extrusion cylinder, causing the pumice machine to malfunction. Therefore, the powder must be pre-mixed with water before being added to the mixing chamber. However, in this embodiment, because the mixing chamber 21 is not connected to the vacuum pumice mechanism, the powder and water can be mixed within the mixing chamber 21, achieving automatic mixing of the pumice material without prior preparation, thus improving pumice efficiency. Simultaneously, it prevents clogging of the vacuum pumice mechanism and the extrusion mechanism.

[0031] In this embodiment, multiple first blades 22 are symmetrically arranged on the drive shaft 12, with the axis of each first blade 22 perpendicular to the drive shaft 12, and each first blade 22 having the shape of a straight blade or a fan-shaped blade. Compared to conventional spiral blades, the first blades 22 generate only radial shear force and no axial component force during rotation, thereby avoiding pushing the clay material forward and only playing a role in kneading and shaping the clay material.

[0032] Furthermore, by providing the first cover 211, it is also convenient to clean the mud-mixing chamber 21 after the mud is removed. Optionally, in an embodiment of this utility model, the first cover 211 can be connected by a snap-fit ​​after being closed with the mud-mixing chamber 21, so as to prevent the first cover 211 from opening under the influence of vibration during the operation of the mud-mixing mechanism; or, the first cover 211 can also be connected by bolts after being closed with the mud-mixing chamber 21.

[0033] In an embodiment of this utility model, the drive shaft 12 passes through the mud-stirring chamber 21, and the mud-stirring chamber 21 can be rotatably connected to the drive shaft 12 so that after the mud is formed, the mud-stirring chamber 21 can be flipped over and the mud can fall directly out of the mud-stirring chamber 21 when the first cover 211 is opened.

[0034] like Figure 1 As shown, in an embodiment of this utility model, the vacuum pumice mechanism includes: a vacuum chamber 31, a plurality of second blades 32, and a vacuum pump 33. The vacuum chamber 31 is provided with a second cover 311 that can be opened or closed. A drive shaft 12 passes through the vacuum chamber 31, and the vacuum chamber 31 is connected to the extrusion mechanism. The plurality of second blades 32 are disposed within the vacuum chamber 31 and connected to the drive shaft 12. The vacuum pump 33 is connected to the vacuum chamber 31 to create a negative pressure within the vacuum chamber 31.

[0035] Specifically, the vacuum chamber 31 is equipped with a second cover 311 to facilitate material feeding, material removal, and cleaning of the vacuum chamber 31. In this embodiment, the kneaded sludge enters the extrusion mechanism under the push of the second blade 32. Therefore, in this embodiment, the structure of the second blade 32 is the same as that of the blades in existing vacuum pumice machines, and will not be described in detail here.

[0036] In this embodiment, the extruded clay can be repeatedly fed into the vacuum chamber 31 for vacuum refining to improve the density and plasticity of the clay.

[0037] like Figure 1 As shown in the embodiment of this utility model, the vacuum slurry mixing mechanism further includes a sealing ring 34, and the vacuum chamber 31 has an opening. If the top surface of the vacuum chamber 31 is open, the sealing ring 34 is disposed along the edge of the opening, and the second cover 311 is disposed at the opening to seal it with the sealing ring 34. The second cover 311 can be detachably connected to the vacuum chamber 31 by a snap-fit, bolt, or other means, so that when the second paddle 32 rotates inside the vacuum chamber 31, the vacuum chamber 31 is in a sealed state, and the second cover 311 will not open automatically; when the second paddle 32 stops working, the second cover 311 can be opened to remove, feed, or clean the interior of the vacuum chamber 31.

[0038] like Figure 1 As shown, the vacuum plowing mechanism also includes a pressure gauge 35, which is installed in the vacuum chamber 31 and is used to detect the pressure inside the vacuum chamber 31.

[0039] like Figure 1 As shown, in this embodiment of the invention, the extrusion mechanism includes an extrusion cylinder 41 and a plurality of third blades 42. One end of the extrusion cylinder 41 is connected to the vacuum chamber 31, and the other end of the extrusion cylinder 41 is provided with an extrusion port 411. A drive shaft 12 passes through the extrusion cylinder 41. The plurality of third blades 42 are disposed inside the extrusion cylinder 41 and connected to the drive shaft 12. The slurry, after being processed in the vacuum chamber 31, is pushed into the extrusion cylinder 41 by the action of the second blades 32, and then extruded from the extrusion port 411 by the action of the third blades 42. In this embodiment, the structure of the third blades 42 is the same as that of the second blades 32, so it will not be described again here.

[0040] Furthermore, the extrusion cylinder 41 may also be provided with a third cover that can be opened or closed to facilitate feeding and unloading of materials. At the same time, the extrusion cylinder 41 may be bolted to the vacuum chamber 31 to facilitate disassembly of the extrusion cylinder 41 for cleaning.

[0041] The laboratory vacuum pumice machine provided in this embodiment of the utility model has a simple structure, is efficient and easy to clean, and is convenient and quick to use, which greatly facilitates intermittent laboratory operations with small batches and multiple groups.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model 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 this utility model.

Claims

1. A laboratory vacuum pugmill characterized by, The mud kneading machine comprises a driving mechanism, a mud stirring mechanism, a vacuum mud kneading mechanism and an extruding mechanism, wherein the driving mechanism is used to drive the mud stirring mechanism, the vacuum mud kneading mechanism and the extruding mechanism to rotate synchronously. The mud stirring mechanism is separately arranged, and the vacuum mud kneading mechanism is communicated with the extruding mechanism. The driving mechanism comprises a driver and a driving shaft connected with the driver, the mud stirring mechanism, the vacuum mud kneading mechanism and the extruding mechanism.

2. Laboratory vacuum pugmill according to claim 1, characterized in that The mud stirring mechanism comprises a mud stirring chamber provided with an openable and closable first cover, and the driving shaft is arranged in the mud stirring chamber. A plurality of first paddles are arranged in the mud stirring chamber and connected with the driving shaft. The axis of the first paddle is arranged perpendicularly to the driving shaft, and the first paddle is a straight plate blade or a fan-shaped blade.

3. Laboratory vacuum pugmill according to claim 2, characterized in that The mud stirring chamber is rotationally connected with the driving shaft. The vacuum mud kneading mechanism comprises a vacuum chamber provided with an openable and closable second cover, and the driving shaft is arranged in the vacuum chamber. A plurality of second paddles are arranged in the vacuum chamber and connected with the driving shaft.

4. Laboratory vacuum pugmill according to claim 3, characterized in that A vacuum pump is communicated with the vacuum chamber.

5. The laboratory vacuum pugmill of claim 3, wherein, The vacuum mud kneading mechanism further comprises a pressure gauge arranged in the vacuum chamber, and the pressure gauge is used to detect the pressure in the vacuum chamber.

6. The laboratory vacuum pugmill of claim 2, wherein, The vacuum mud kneading mechanism further comprises a sealing ring, and the vacuum chamber is provided with an opening. The second cover is arranged in the opening and is sealingly connected with the vacuum chamber through the sealing ring. The extruding mechanism comprises an extruding barrel communicated with the vacuum chamber at one end and provided with an extruding outlet at the other end. A plurality of third paddles are arranged in the extruding barrel and connected with the driving shaft.

7. Laboratory vacuum pugmill according to claim 6, characterized in that The driving mechanism further comprises a controller electrically connected with the driver.

8. The laboratory vacuum pugmill of claim 6, wherein, ​ 9. The laboratory vacuum pugmill of claim 6, wherein, ​ ​ ​ 10. The laboratory vacuum pugmill of claim 2, wherein, ​

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