Vacuum emulsification equipment for paste preparation

Abstract

The invention belongs to the technical field of emulsifying equipment, and particularly relates to vacuum emulsifying equipment for paste preparation. The central pipe is arranged at the central position in the container; the second ultrasonic ends are symmetrically arranged on the outer wall of the central pipe at equal intervals; the first ultrasonic generator is installed in front of the top of the container, the second ultrasonic generator is located behind the top of the container, the first ultrasonic generator and the second ultrasonic generator are connected, and the height and the orientation of the second ultrasonic end are adjusted through an adjusting assembly. The height and orientation of the side pipe are adjusted through the adjusting assembly, the height and orientation of the center pipe are adjusted through the movable assembly, the first ultrasonic end and the second ultrasonic end complete height and orientation changes, the emulsification uniformity effect is improved, and due to the fact that the first ultrasonic end and the second ultrasonic end are different in power, the vibration frequencies of the first ultrasonic end and the second ultrasonic end are different, and the emulsification uniformity is improved. And the first ultrasonic end and the second ultrasonic end are staggered, so that heat generated by ultrasonic waves is easier to diffuse.

Description

Technical Field

[0001] The invention relates to the technical field of emulsification equipment, in particular to a vacuum emulsification equipment for paste making. Background Art

[0002] Emulsification equipment refers to professional machinery used to transform two or more immiscible liquids into evenly distributed liquids. It is widely used in the cosmetics, pharmaceutical, food and chemical industries. Its core function is to achieve high-speed shearing, dispersion and mixing of materials to achieve the emulsification effect.

[0003] At present, a Chinese patent with publication number CN114870723A discloses a vacuum ultrasonic oil emulsification device. This patent proposes to use an ultrasonic energy focusing probe or an ultrasonic vibrating rod to emulsify the oil-water mixture. Such a device has high emulsification efficiency, but the direction of ultrasonic propagation is single, and the emulsification of the oil-water mixture is not thorough. The effect of using an electric heating wire for preheating is that high temperature will also be generated during the ultrasonic emulsification process in actual applications. Excessive temperature increases the difficulty of temperature control for some emulsified products, and it is difficult to heat evenly.

[0004] In the above patent, the materials around the main body of the emulsifier are continuously transported to the center through the rotation of two screws, which effectively reduces the dead corners of emulsification and makes the materials emulsified more thoroughly. In actual applications, mechanical stirring may lead to uneven distribution of droplet sizes in the emulsion. Since the shear force generated by mechanical stirring may be higher in some areas than in other areas, it is difficult to make the shear force and pressure generated by ultrasonic energy disperse the reaction materials into tiny droplets suitable for mechanical stirring. At the same time, mechanical stirring will further generate heat.

[0005] At the same time, it does not effectively solve the problem of the single direction of ultrasonic propagation. The relatively fixed microjets and shear forces formed by the fixed ultrasonic source will affect the emulsification effect. In addition, since this emulsification device is used for paste products, the traditional vacuum emulsification device uses a vacuum detection sensor for vacuum detection. However, if the paste comes into contact with the vacuum detection sensor during ultrasonic or mechanical stirring, it will directly lead to the failure of the vacuum detection sensor, resulting in a lack of judgment on the vacuum state in the device.

[0006] Therefore, it is necessary to provide a kind of vacuum emulsifying equipment for paste system to solve the above-mentioned technical problems. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a vacuum emulsifying device for paste making, which can effectively and stably detect the vacuum state in the emulsifying device, effectively utilize the heat generated by ultrasound, and improve the emulsification effect.

[0008] The present invention provides a vacuum emulsifying device for preparing a paste, comprising a container, wherein material pipes are symmetrically connected to the left and right sides of the top of the container, and the ends of the material pipes are connected to control valves, a central tube is arranged at the center of the container, and second ultrasonic ends are symmetrically arranged on the outer wall of the central tube, and a first ultrasonic generator and a second ultrasonic generator are respectively installed at the front and back of the top of the container, and the second ultrasonic wave is connected to the second ultrasonic end;

[0009] A movable assembly is installed on the top of the container, and side tubes are evenly distributed around the bottom of the movable assembly. First ultrasonic ends are evenly spaced on the outer walls of the side tubes through fixed blocks, and the direction and height of the first ultrasonic ends are changed by the movable assembly;

[0010] The height and orientation of the second ultrasonic end of the central tube are adjusted by an adjustment component, and the heights and orientations of the first ultrasonic end and the second ultrasonic end are staggered.

[0011] Preferably, the movable component comprises a rotating table, a fixing ring is rotatably connected to the bottom of the rotating table, a rotating slide groove is evenly provided on the surface of the fixing ring, and a height slide groove is provided inside the rotating slide groove.

[0012] Preferably, a moving block is provided on the top of the side tube, and the moving block is installed corresponding to the height slide groove. The rotating table drives the fixed ring to rotate, and the side tube moves along the rotating slide groove in the height slide groove through the moving block. The height and direction of the side tube are adjusted through the height slide groove and the rotating slide groove.

[0013] Preferably, the adjustment component includes an electric push rod and a rotating table, the electric push rod is connected to the corresponding central tube, a rotating table is installed on the top of the electric push rod, and the second ultrasonic end of the central tube completes height and orientation adjustment through the electric push rod and the rotating table.

[0014] Preferably, the power ratio of the first ultrasonic generator to the second ultrasonic generator is 1.5:1.

[0015] Preferably, the fixing ring is extended inwardly to be equipped with an acoustic wave sensor, and the acoustic wave sensor is located between the side tube and the center tube.

[0016] Preferably, a vacuum pump is installed on the top of the container, and the signal output end of the acoustic wave sensor is connected to the signal input end of the vacuum pump.

[0017] Preferably, the outer wall of the container is evenly provided with limiting slide grooves, the limiting slide grooves are inclined arc-shaped, and the side tubes are located in the limiting slide grooves.

[0018] Compared with the related art, the vacuum emulsifying equipment for preparing paste provided by the present invention has the following beneficial effects:

[0019] 1. The present invention sets a first ultrasonic generator and a second ultrasonic generator with different powers, connects a first ultrasonic end to a second ultrasonic end respectively through the first ultrasonic generator and the second ultrasonic generator, and starts the first ultrasonic generator in a ratio of 1.5:1 to form different ultrasonic frequencies. As the higher the ultrasonic power, the greater the energy input into the liquid, the more intense the acoustic cavitation phenomenon, the stronger the micro jet and the shear force formed, there is a certain difference in the droplet size formed by the two ultrasonic waves of different powers, and the contact between the two will further improve the emulsification effect.

[0020] 2. The arrangement of the adjustment component and the movable component of the present invention, since the fixed ultrasonic source will cause uneven emulsification during the emulsification process, and the ultrasonic source will generate heat, the fixed ultrasonic source will cause the heat to be too concentrated, and the heat is difficult to exchange, the height and direction of the side tube are adjusted by the adjustment component, and the height and direction of the central tube are adjusted by the movable component, so that the first ultrasonic end and the second ultrasonic end can complete the change of height and direction, and improve the effect of uniform emulsification. Since the two have different powers, the frequency of their vibration is also different, and the first ultrasonic end and the second ultrasonic end are staggered, so that the heat generated by the ultrasonic wave is easier to diffuse and the heat is easier to be uniform;

[0021] Compared with the mechanical stirring in the comparative documents, the metal structure that does not require stirring can avoid the mixing of metal residues and paste caused by metal wear and affect the finished product. At the same time, the heat generated by mechanical stirring is concentrated on the stirring blades, and continues to increase with the increase of stirring speed. The temperature is difficult to control and it is difficult to accurately control the temperature when facing different types of products.

[0022] 3. The present invention sets a vacuum pump, an acoustic wave sensor, a first ultrasonic end and a second ultrasonic end, and starts the vacuum pump to evacuate the container to a vacuum state. During the emulsification process, the air in the two materials is discharged and rises during the emulsification process, causing the vacuum state of the container to be broken. By using the principle that ultrasonic waves cannot propagate in a vacuum state, if the acoustic wave sensor detects that the sound wave is greater than a threshold value, it means that the vacuum state in the container is broken, which is conducive to real-time monitoring of the vacuum state in the container;

[0023] Compared with existing vacuum detection sensors, since vacuum detection sensors rely on their internal sensitive elements to directly or indirectly sense changes in environmental pressure, when these sensors are wrapped in paste, their sensitive elements may be hindered by the physical properties of the paste (such as viscosity and density), resulting in the inability to accurately sense pressure changes in the external environment. During the process of ultrasonic emulsification or mechanical stirring emulsification, the internal emulsified paste will inevitably splash, while the acoustic wave sensor will not be affected by the contact with the paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the vacuum emulsification equipment for preparing the paste in the present invention;

[0025] Figure 2 A schematic diagram of the central tube and side tubes inside the container of the vacuum emulsifying device for preparing a paste in the present invention;

[0026] Figure 3 It is a schematic diagram of the overturned structure of the movable components of the vacuum emulsifying device for making a paste in the present invention;

[0027] Figure 4 This is a schematic diagram of the central tube structure of the vacuum emulsification equipment for the paste system of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal cross-section of a container of a vacuum emulsifying device for preparing a paste in the present invention;

[0029] Figure 6 This is a schematic diagram of the interior of a container of a vacuum emulsifying device for preparing a paste system according to the present invention.

[0030] Numbers in the figure: 1. container; 11. limit slide; 12. vacuum pump; 2. material pipe; 3. control valve; 4. first ultrasonic generator; 5. side pipe; 51. moving block; 52. first ultrasonic end; 53. fixed block; 54. movable component; 541. fixed ring; 542. rotating slide; 543. height slide; 544. rotating table; 55. acoustic wave sensor; 6. second ultrasonic generator; 7. center tube; 71. second ultrasonic end; 72. adjustment component; 721. electric push rod; 723. rotating table. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] A vacuum emulsifying device for paste making comprises a container 1, which is a closed container 1 made of metal material, with material pipes 2 symmetrically connected to the left and right sides of the top of the container 1, and a control valve 3 connected to the end of the material pipe 2. The tank body storing materials externally connects the materials to the container 1 through the control valve 3 and the material pipe 2, and the materials are sent into the container 1 through the material pipe 2 by opening the control valve 3. The control valve 3 can be electrically controlled. A central tube 7 is arranged at the center of the container 1, and second ultrasonic ends 71 ​​are symmetrically arranged on the outer wall of the central tube 7. The second ultrasonic ends 71 ​​are symmetrically arranged one by one in a group, and a plurality of groups are arranged according to the length of the central tube 7. The device is provided with five groups. There are ten second ultrasonic ends 71 ​​in total. The first ultrasonic generator 4 and the second ultrasonic generator 6 are respectively installed at the front and back of the top of the container 1. The second ultrasonic wave is connected to the corresponding second ultrasonic end 71. The power of the first ultrasonic generator 4 and the second ultrasonic generator 6 is 1.5:1. This ratio can be used as a reference and can be adjusted according to the materials of the actual emulsified product. The ultrasonic generator is mainly composed of a signal generator and a power supply. The signal generator is responsible for generating a signal of a specific frequency, and the frequency matches the frequency of the ultrasonic transducer. The power supply part converts electricity into a high-frequency AC signal and provides it to the ultrasonic transducer to generate ultrasonic vibration;

[0036] The first ultrasonic end 52 and the second ultrasonic end 71 are connected respectively through the first ultrasonic generator 4 and the second ultrasonic generator 6, and the power of the first ultrasonic generator 4 and the power of the second ultrasonic generator 6 are started in a ratio of 1.5:1, thereby forming different ultrasonic frequencies. Since the higher the ultrasonic power, the greater the energy input into the liquid, the more intense the acoustic cavitation phenomenon, the stronger the formed microjets and shear forces, there is a certain difference in the droplet sizes formed by the two ultrasonic waves of different powers, and the contact between the two will further improve the emulsification effect.

[0037] A movable component 54 is installed on the top of the container 1, and side tubes 5 are evenly distributed around the bottom of the movable component 54. The number of side tubes 5 is adjusted according to the actual size of the container 1. The device adopts four groups, and the four groups of side tubes 5 correspond to four directions respectively. The outer wall of the side tube 5 is equidistantly provided with a first ultrasonic end 52 through a fixed block 53, and the direction and height of the first ultrasonic end 52 are changed by the movable component 54;

[0038] The movable component 54 includes a rotating table 544, which is composed of four core components: a supporting structure, a rotating bearing, a driving system and a control system. The rotating table 544 provides high-precision rotating operation. The bottom of the rotating table 544 is rotatably connected to a fixed ring 541. The surface of the fixed ring 541 is evenly provided with rotating grooves 542. The rotating grooves 542 are provided with height grooves 543. A moving block 51 is provided on the top of the side tube 5. The moving block 51 is installed corresponding to the height groove 543. The rotating table 544 drives the fixed ring 541 to rotate. The side tube 5 moves along the rotating groove 542 in the height groove 543 through the moving block 51. The height and direction of the side tube 5 are adjusted through the height groove 543 and the rotating groove 542.

[0039] Since the side tube 5 has a certain weight and falls naturally, during the rotation of the rotating table 544, the moving block 51 on the top of the side tube 5 moves in the height slot 543 along the rotating slot 542, and the height of the side tube 5 changes with the moving block 51 in the height slot 543, and the direction of the side tube 5 changes with the moving block 51 in the rotating slot 542, thereby achieving the adjustment of the direction and height of the first ultrasonic end 52 on the side tube 5.

[0040] The outer wall of the container 1 is evenly provided with limiting slide grooves 11, which are inclined arc-shaped. The side tube 5 is located in the limiting slide grooves 11. The limiting slide grooves 11 are mainly adapted to the height and direction change trajectory of the side tube 5, further ensuring the movement stability of the side tube 5.

[0041] The height and orientation of the second ultrasonic end 71 of the central tube 7 are adjusted by the adjustment component 72. The height and orientation of the first ultrasonic end 52 and the second ultrasonic end 71 are staggered. The adjustment component 72 includes an electric push rod 721 and a rotating table 723. The structure of the rotating table 723 is similar to that of the rotating table 544 and will not be described in detail here. It is mainly used to drive the electric push rod 721 to rotate. The electric push rod 721 is connected to the corresponding central tube 7. The rotating table 544 is installed on the top of the electric push rod 721. The second ultrasonic end 71 of the central tube 7 is adjusted in height and orientation through the electric push rod 721 and the rotating table 723. The central tube 7 passes through the container 1 through the bearing structure. The height adjustment range of the central tube 7 is limited, which normally does not exceed 2 cm. The orientation of the central tube 7 is mainly adjusted by the rotating table 723. The height of the central tube 7 is driven by the electric push rod 721 to adjust the height, thereby achieving the adjustment of the orientation and height of the second ultrasonic end 71 on the central tube 7.

[0042] The height and direction of the side tube 5 are adjusted by the adjusting component 72, and the height and direction of the central tube 7 are adjusted by the movable component 54. During the emulsification process, the material will not always be in the same vibration direction, which will cause molecules of the same size to be spaced apart in the same motion mode. At the same time, the attraction and repulsion between molecules will affect the emulsification effect, resulting in the paste being not delicate enough. The first ultrasonic end 52 and the second ultrasonic end 71 are used to change the height and direction, which can break the original molecular motion trajectory, change the previous spacing between molecules, reduce the attraction and repulsion between molecules that affect the emulsification effect, and improve the uniformity of the emulsification. Since the two have different powers, their vibration frequencies are also different, and their heights and directions are also staggered, which will make the motion trajectory of the emulsified material more complicated, and it is easier for them to collide with each other, and heat is easier to exchange, so that the heat generated by the ultrasound is easier to diffuse and the heat is easier to be uniform. For some temperature-sensitive materials, the temperature control is more accurate and the regional concentration of temperature can be avoided.

[0043] Embodiment 2

[0044] The difference from the first embodiment is that: the fixing ring 541 extends inward and is equipped with an acoustic wave sensor 55, which is a device that can convert acoustic wave signals into electrical signals. The acoustic wave sensor 55 is located between the side tube 5 and the center tube 7, and a vacuum pump 12 is installed on the top of the container 1. The signal output end of the acoustic wave sensor 55 is connected to the signal input end of the vacuum pump 12.

[0045] In actual production, the material often does not completely fill the container 1, and some space is often reserved. Then, the top first ultrasonic end 52 or the second ultrasonic end 71 is exposed, and the container 1 is evacuated to a vacuum state by starting the vacuum pump 12. During the emulsification process, the air in the two materials is discharged and rises during the emulsification process, causing the vacuum state of the container 1 to be broken. Based on the principle that ultrasound cannot propagate in a vacuum state, if the sound wave sensor 55 detects that the sound wave is greater than a threshold value, it means that the vacuum state in the container 1 is broken, and the vacuum pump 12 needs to be started again to restore the container 1 to a vacuum state.

[0046] The vacuum degree directly affects the propagation speed of sound waves in the medium. By measuring the change in the speed of sound waves, the change in vacuum degree can be determined. As the vacuum degree decreases, the discharge phenomenon between the electrode and the shielding cover will intensify, generating more discharge acoustic emissions. By monitoring the frequency and intensity of these acoustic emissions, the state of the vacuum degree can be evaluated.

[0047] Vacuum environment plays an important role in the emulsification process, especially in those applications where the emulsification quality is extremely high, such as cosmetics and pharmaceutical manufacturing. The vacuum environment can lower the boiling point of the liquid, allowing the liquid to boil at a lower temperature, thereby helping to remove air or other gases from the mixture, which is necessary to form a uniform and stable emulsion.

[0048] Working principle: The tank for storing materials externally is connected to the container 1 through the control valve 3 and the material pipe 2. The control valve 3 is opened to allow the materials to be fed into the container 1 through the material pipe 2. The two materials are added into the container 1 according to the prescribed ratio, and some space needs to be reserved in the container 1 to expose the highest second ultrasonic end 71. Before emulsification, the vacuum pump 12 is started to evacuate the container 1 to form a vacuum state inside the container 1;

[0049] The power of the first ultrasonic generator 4 and the second ultrasonic generator 6 are adjusted in proportion according to the actual emulsified product. The ratio can be referred to as 1.5:1. The first ultrasonic generator 4 and the second ultrasonic generator 6 are respectively connected to the first ultrasonic end 52 and the second ultrasonic end 71 to form different ultrasonic frequencies. There is a certain difference in the size of droplets formed by the two ultrasonic waves of different powers, and the contact between the two will further improve the emulsification effect.

[0050] By starting the movable component 54, during the rotation of the rotating table 544, the moving block 51 on the top of the side tube 5 moves in the height slot 543 along the rotating slot 542, and the height of the side tube 5 changes with the moving block 51 in the height slot 543, and the direction of the side tube 5 changes with the moving block 51 in the rotating slot 542, thereby achieving the adjustment of the direction and height of the first ultrasonic end 52 on the side tube 5, wherein the side tube 5 is located in the limiting slot 11, and the limiting slot 11 is mainly adapted to the height and direction change trajectory of the side tube 5;

[0051] By starting the adjustment component 72, the rotating platform 723 drives the electric push rod 721 to rotate, and the electric push rod 721 is connected to the corresponding central tube 7. The second ultrasonic end 71 of the central tube 7 is adjusted in height and direction through the electric push rod 721 and the rotating platform 723. The central tube 7 passes through the container 1 through the bearing structure.

[0052] During the emulsification process, the first ultrasonic end 52 and the second ultrasonic end 71 are used to change the height and direction, which can break the original molecular motion trajectory, change the previous interval between molecules, reduce the attraction and repulsion between molecules that affect the emulsification effect, and improve the uniformity of emulsification. Since the two have different powers, their vibration frequencies are also different, and the vibration frequencies and vibration directions of the first ultrasonic end 52 and the second ultrasonic end 71 are staggered, so that the heat generated by the ultrasound is easier to diffuse and the heat is easier to be uniform.

[0053] During the emulsification process, the air in the two materials is discharged and rises, causing the vacuum state of the container 1 to be broken. By utilizing the principle that ultrasound cannot propagate in a vacuum state, the ultrasound generated by the exposed second ultrasound end 71, if the ultrasound sensor 55 detects that its ultrasound wave is greater than a threshold value, it means that the vacuum state in the container 1 is broken, and the vacuum pump 12 needs to be started again to restore the container 1 to a vacuum state.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vacuum emulsifying device for paste making, characterized in that: include: Container (1); A central tube (7) is arranged at a central position in the container (1); A second ultrasonic end (71) is symmetrically arranged on the outer wall of the central tube (7) at an equal distance; The first ultrasonic generator (4) is installed in front of the top of the container (1), wherein the second ultrasonic generator (6) is located behind the top, and the two are connected, and the height and direction of the second ultrasonic end (71) are adjusted by the adjustment component (72).

2. The vacuum emulsifying device for paste preparation according to claim 1, characterized in that: A movable component (54) is installed at the top of the container (1), and side tubes (5) are evenly distributed around the bottom of the movable component (54). The outer wall of the side tube (5) is evenly spaced with first ultrasonic ends (52) through a fixed block (53). The heights and directions of the first ultrasonic ends (52) and the second ultrasonic ends (71) are staggered. The direction and height of the first ultrasonic end (52) are changed by the movable component (54). The movable component (54) includes a rotating table (544). The bottom of the rotating table (544) is rotatably connected to a fixed ring (541). The surface of the fixed ring (541) is evenly provided with rotating grooves (542), and a height groove (543) is provided inside the rotating groove (542).

3. The vacuum emulsifying device for paste preparation according to claim 2, characterized in that: A moving block (51) is arranged on the top of the side tube (5), and the moving block (51) is installed corresponding to the height slide groove (543). The rotating platform (544) drives the fixed ring (541) to rotate, and the side tube (5) moves in the height slide groove (543) along the rotating slide groove (542) through the moving block (51). The height and direction of the side tube (5) are adjusted through the height slide groove (543) and the rotating slide groove (542).

4. The vacuum emulsifying device for paste preparation according to claim 1, characterized in that: The adjustment component (72) comprises an electric push rod (721) and a rotating platform (723), wherein the electric push rod (721) is connected to the corresponding central tube (7), a rotating platform (544) is installed on the top of the electric push rod (721), and the second ultrasonic end (71) of the central tube (7) is adjusted in height and direction through the electric push rod (721) and the rotating platform (723).

5. The vacuum emulsifying device for paste preparation according to claim 1, characterized in that: The power ratio of the first ultrasonic generator (4) to the second ultrasonic generator (6) is 1.5:

1.

6. The vacuum emulsifying device for paste preparation according to claim 2, characterized in that: The fixing ring (541) is extended inwardly and is equipped with an acoustic wave sensor (55), and the acoustic wave sensor (55) is located between the side tube (5) and the center tube (7).

7. The vacuum emulsifying device for paste preparation according to claim 6, characterized in that: A vacuum pump (12) is installed on the top of the container (1), and the signal output end of the acoustic wave sensor (55) is connected to the signal input end of the vacuum pump (12).

8. The vacuum emulsifying device for paste preparation according to claim 1, characterized in that: The outer wall of the container (1) is evenly provided with limiting sliding grooves (11), the limiting sliding grooves (11) are in the shape of an inclined arc, and the side tube (5) is located in the limiting sliding grooves (11).

9. The vacuum emulsifying device for paste preparation according to claim 1, characterized in that: The left and right sides of the top of the container (1) are symmetrically connected to material pipes (2), and the ends of the material pipes (2) are connected to control valves (3).

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