A small-scale external circulation emulsifier

Abstract

The present invention discloses a small external circulation emulsifier, which comprises a workbench. A pretreatment tank is arranged inside the workbench. The pretreatment tank is connected to a homogenization assembly arranged outside the workbench. The outlet of the homogenization assembly is connected to an emulsification tank outside the workbench. An operation interface capable of monitoring the states of each component is further arranged on the upper surface of the workbench. The stirring impeller in the pretreatment tank is connected to a first motor extending out of the upper surface of the workbench. There is a stirring paddle in the emulsification tank, and the stirring paddle is connected to a second motor arranged on the upper surface of the cover body of the emulsification tank. A third motor connected to the first rotating shaft in the homogenization assembly is arranged on the side wall of the homogenization assembly. The three motors are all connected to a controller, and the controller is connected to the operation interface. The homogenization assembly comprises a comb-shaped tooth impeller capable of rotating driven by the first rotating shaft and a crushing induction impeller in the comb-shaped tooth impeller. Along the conveying direction of the homogenization assembly, a homogenization cooling interlayer is further arranged in front of the crushing induction impeller, and the homogenization cooling interlayer is connected to the discharge port. By adopting the technical scheme of the present invention, the emulsification efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to an emulsifying machine, and particularly to a small external circulation type emulsifying machine. Background Art

[0002] The existing emulsifying machines generally adopt a large-scale design, and are equipped with an emulsifying tank, a pretreatment tank, a stirring tank, etc. Generally, there are at least 2 to 3 pretreatment tanks, because the materials used are generally more than 2 kinds, so the number of pretreatment tanks used is generally more than 2. However, due to the different properties of the materials in the pretreatment process, the pretreatment methods are not necessarily the same. If materials that do not require pretreatment are used at the same time and the pretreatment tanks are still adopted, higher production costs will be incurred.

[0003] Furthermore, after the pretreatment is completed, some materials are more viscous and some are more dilute. Generally, relatively large stirring paddles are used in the stirring tank, and the best stirring effect for the mixing of each material cannot be achieved. If emulsification is directly carried out in the emulsifying tank, under the premise of the same time condition, the emulsification uniformity will be lower. In order to achieve the same emulsification effect, longer emulsification stirring time is required.

[0004] Furthermore, the existing emulsifying machines adopt a lift cover design, which requires more labor for lifting the cover, reducing the production efficiency.

[0005] Furthermore, the stirring paddles of the existing emulsifying machines are also equipped with scraping plates, but the scraping plates can only scrape the wall in one direction and cannot scrape the wall in two directions. Summary of the Invention

[0006] Object of the Invention: The object of the present invention is to solve the problems that the existing emulsifying machines are large-scale and not applicable to small spaces, while the material mixing is uneven, the cover flipping efficiency of the emulsifying machine is low, and it can only scrape the wall in one direction.

[0007] Technical Solution: To solve the above problems, the present invention adopts the following technical solutions:

[0008] A small external circulation emulsifier, comprising a workbench. Inside the workbench, there is a pretreatment tank. The pretreatment tank is connected to a homogenization assembly arranged outside the workbench. The outlet of the homogenization assembly is connected to an emulsification tank outside the workbench. The bottom discharge port of the emulsification tank is connected to the homogenization assembly. On the upper surface of the workbench, there is also an operation interface capable of controlling the states of each component. The stirring impeller in the pretreatment tank is connected to a first motor extending out of the upper surface of the workbench. There is a stirring paddle in the emulsification tank, and the stirring paddle is connected to a second motor arranged on the upper surface of the cover of the emulsification tank. On the side wall of the homogenization assembly, there is a third motor connected to the first rotating shaft in the homogenization assembly. The three motors are all connected to a controller, and the controller is connected to the operation interface. The homogenization assembly includes a comb-shaped tooth impeller capable of rotating driven by the first rotating shaft and a crushing induction impeller in the comb-shaped tooth impeller. Along the conveying direction of the homogenization assembly, a homogenization cooling interlayer is also provided in front of the crushing induction impeller, and the homogenization cooling interlayer is connected to the discharge port.

[0009] By adding a design solution for the homogenization assembly, better material crushing can be carried out before emulsification in the emulsification tank, realizing more uniform mixing of viscous materials and sparse materials, and improving the subsequent emulsification effect.

[0010] The controller only realizes information such as the acquisition of the states of each motor to judge whether to proceed to the next step. Therefore, a simple 89C51 single-chip microcomputer can be used to achieve this.

[0011] Further, the first rotating shaft of the homogenization assembly is arranged horizontally.

[0012] One of the core technologies, through this design method, the mixing of materials is completed in the horizontal direction. If the up-in and down-out method is adopted, the mixing of materials will be incomplete. If the down-in and up-out method is adopted, although the mixing of materials is complete, it is required that the material content in the homogenization assembly should be kept above the outlet, which requires higher energy consumption for conveying in the previous process or higher conveying energy consumption in the homogenization assembly. Therefore, the corresponding production energy consumption will be increased. By adopting the horizontal design, with the cooperation of the comb-shaped tooth impeller and the crushing induction impeller in the comb-shaped tooth impeller, not only can better uniform mixing be achieved, but also the production energy consumption will not be increased.

[0013] Further, the homogenization cooling interlayer is a homogenization liquid cooling interlayer capable of cooling the conveying channel, which is arranged outside the wall surface of the conveying channel behind the comb-shaped tooth impeller along the conveying direction of the homogenization assembly.

[0014] The liquid can be cold water or cold oil. By setting the homogenization liquid cooling interlayer, the mixture in the conveying channel can be cooled, improving the subsequent emulsification effect.

[0015] Furthermore, there are at least two discharge ports of the homogenization component. One of them is connected to the inlet of the emulsification tank through an external circulation pipe, and the other discharge port is left vacant as a discharging port.

[0016] The discharging port is arranged on the lower surface of the homogenization component. The purpose of this design is to be able to empty the homogenization component after one-time emulsification to prevent the pollution of other materials during the next emulsification.

[0017] Furthermore, there are at least two inlet ports of the homogenization component. One inlet port is connected to the inlet of the pretreatment tank, and the other inlet port is connected to the feed hopper.

[0018] Through the design of the feed hopper, materials that do not require pretreatment can be directly added through the hopper, improving production efficiency.

[0019] Furthermore, the comb-tooth impeller is an annular gear extending along the axial direction. There are evenly distributed wooden comb-shaped teeth on the annular gear, and there is a crushing-induced impeller on the inner wall of the annular gear. The crushing-induced impeller is a comb-tooth impeller extending along the radial direction of the annular gear and fixedly connected to the inner wall of the annular gear.

[0020] With this design, the crushing-induced impeller makes the mixed materials form a spiral eddy current. And with the cooperation of the comb-tooth impeller, the materials forming the spiral eddy current are further crushed and mixed by the wooden comb-shaped teeth, improving the overall mixing uniformity.

[0021] Furthermore, a comb-shaped prism with a lower density relative to the wooden comb-shaped teeth is also provided on the periphery of the comb-tooth impeller and is fixed to the inner wall of the homogenization component and can cooperate with the comb-tooth impeller.

[0022] Due to the speed difference between the fixed comb-shaped prism and the comb-tooth impeller, the mixed materials are ground at the gap, forming a more uniform mixed material to improve the emulsification effect of the mixture in the next step.

[0023] Furthermore, the workbench includes a base and a cabinet body arranged on the base. The base is rectangular. The cabinet body reserves working areas along both the length direction and the width direction of the base. From the node of the working area reserved in the width direction, the cabinet body is recessed inward to form a first wall surface along the length direction of the base and a second wall surface with an included angle of 120° with the first wall surface.

[0024] With this design, when the employee faces the included angle between the first wall surface and the second wall surface, they can operate all the components on the entire workbench at the same time.

[0025] Furthermore, the emulsification tank is arranged on the wall surface of the included angle area formed after the combination of the first wall surface and the second wall surface.

[0026] With this design, the integration of the emulsification tank is improved, so that the small emulsification tank can be exactly accommodated within the area formed by the included angle between the first wall surface and the second wall surface.

[0027] Furthermore, the base sets the right angle formed by the lengthwise side and the widthwise side of the base in a chamfered form in the direction towards the first wall surface and the second wall surface.

[0028] If it is in a right-angle form, when employees work alternately on each side, their feet may hit the corners, causing injuries to the employees. However, by adopting the chamfered form, this can be well avoided.

[0029] Furthermore, an operation interface is provided at the upper surface of the cabinet body corresponding to the wall surface in the length direction of the cabinet body combined with the second wall surface.

[0030] With this design, when the employee faces the operation interface, they can simultaneously touch the cover of the emulsification tank, improving the convenience of operation.

[0031] Furthermore, there is an electric control cabinet for placing a controller at the extension of the length direction of the cabinet body combined with the second wall surface.

[0032] Furthermore, the emulsification tank includes a tank body and a second rotating shaft provided on one side of the opening of the tank body. A cover body that can rotate around the second rotating shaft and laterally cover the tank body is provided on the second rotating shaft. The lower surface of the connection between the cover body and the second rotating shaft is connected to the top end of a hydraulic rod, and the bottom end of the hydraulic rod is provided on the side of the tank body.

[0033] With this design, the cover body is different from the ordinary lifting structure. It adopts a flip structure. The flip structure has fewer components compared to the lifting structure, which can save a large amount of equipment space, especially the height space. With the cooperation of the hydraulic rod, the cover body can be flipped up more labor-savingly.

[0034] Furthermore, there are through holes on the cover body. A third rotating shaft passes through the cover body and is connected to a stirring paddle arranged inside the tank body. The part of the third rotating shaft exposed outside the cover body is connected to a second motor located on the upper surface of the cover body.

[0035] Furthermore, the stirring paddle is a V-shaped stirring paddle.

[0036] Furthermore, the axisymmetric center of the V-shaped stirring paddle is connected to the third rotating shaft. Axial scraping wall plate mounting seats protruding along the length direction of each side are provided on the outer side surfaces of each side of the V-shaped stirring paddle, and double-sided scraping wall plates are installed on the scraping wall plate mounting seats.

[0037] A limiting part for preventing the double-sided scraping wall plate from flipping over excessively is also provided at the installation end of the axial scraping wall plate mounting seat, so that it can scrape the inner wall of the tank body within the limited range.

[0038] Further, there is a protrusion in the middle of the scraping wall plate mounting seat with a diameter larger than the axial diameter. There is a clamping groove on the inner wall of the mounting hole of the bidirectional scraping wall plate that can cooperate with the protrusion, and the protruding height of the protrusion is greater than the recessed depth of the clamping groove.

[0039] By means of interference fit, the stability after the installation of the bidirectional scraping wall plate can be improved.

[0040] Further, both ends of the V-shaped stirring paddle are also provided with extension parts along the height direction of the tank body, and the outer surface of the extension parts is also provided with scraping wall plate mounting seats and bidirectional scraping wall plates that cooperate with the scraping wall plate mounting seats.

[0041] There is an inclined surface at the bottom of the tank body, so a V-shaped stirring paddle is adopted, and through the extension part, the inner wall of the tank body in the vertical direction can be scraped.

[0042] Further, the bidirectional scraping wall plate includes a nesting part that can be nested on the scraping wall plate mounting seat, and a bidirectional scraping wall plate with a trapezoidal cross-section integrally formed with the nesting part. The nesting part has a mounting hole.

[0043] Through the design with a trapezoidal cross-section, it can better fit the inner wall of the tank body.

[0044] Beneficial effects: Compared with the prior art, the present invention:

[0045] By adopting the technical solution of the present invention, the emulsification efficiency and the final emulsification effect can be improved. Description of the Drawings

[0046] Figure 1 It is a three-dimensional structural schematic diagram of the emulsifying machine of the present invention;

[0047] Figure 2 It is a side view structural schematic diagram of the emulsifying machine of the present invention;

[0048] Figure 3 It is a working principle schematic diagram of the emulsifying machine of the present invention;

[0049] Figure 4 It is a structural solid diagram of the homogenizing component of the present invention;

[0050] Figure 5 It is a structural schematic diagram of the scraping wall plate mounting seat of the present invention;

[0051] Figure 6 It is a structural schematic diagram of the bidirectional scraping wall plate of the present invention. Specific Embodiments

[0052] The present invention will be further described below with reference to the drawings and embodiments.

[0053] Embodiment 1

[0054] As Figures 1 to 4As shown in the figure, a small external circulation emulsifier includes a workbench. Inside the workbench, there is a pretreatment tank 1. The pretreatment tank 1 is connected to a homogenization component 2 arranged outside the workbench. The outlet of the homogenization component 2 is connected to an emulsification tank outside the workbench. The bottom discharge port of the emulsification tank is connected to the homogenization component 2. On the upper surface of the workbench, there is also an operation interface 3 that can control the states of each component. The stirring impeller in the pretreatment tank 1 is connected to a first motor 4 extending out of the upper surface of the workbench. There is a stirring paddle 5 in the emulsification tank. The stirring paddle 5 is connected to a second motor 7 arranged on the upper surface of the cover body 6 of the emulsification tank. On the side wall of the homogenization component 2, there is a third motor 9 connected to the first rotating shaft 8 in the homogenization component 2. All three motors are connected to a controller (not shown). The controller is connected to the operation interface 3. The homogenization component 2 includes a comb-shaped tooth impeller 10 that can rotate driven by the first rotating shaft 8 and a crushing induction impeller 11 in the comb-shaped tooth impeller 10. Along the conveying direction of the homogenization component 2, a homogenization cooling interlayer 12 is also provided in front of the crushing induction impeller 11. The homogenization cooling interlayer 12 is connected to the discharge port.

[0055] By adding a design solution for the homogenization component, better material crushing can be carried out before emulsification in the emulsification tank, achieving more uniform mixing of viscous materials and sparse materials, and improving the subsequent emulsification effect.

[0056] The controller only realizes information such as collecting the states of each motor to judge whether to proceed to the next step. Therefore, a simple 89C51 single-chip microcomputer can be used to achieve this.

[0057] The first rotating shaft of the homogenization component 2 is arranged horizontally. The first rotating shaft extends along the length direction of the homogenization component. Therefore, the homogenization component is also arranged horizontally.

[0058] One of the core technologies is that through this design method, the mixing of materials is completed horizontally. If the up-in and down-out method is adopted, the mixing of materials will be incomplete. If the down-in and up-out method is adopted, although the mixing of materials is complete, it is required that the material content in the homogenization component should be kept above the outlet. This requires higher energy consumption for conveying in the previous process or higher conveying energy consumption in the homogenization component. Therefore, the corresponding production energy consumption will be increased. By adopting a horizontal design, with the cooperation of the comb-shaped tooth impeller and the crushing induction impeller in the comb-shaped tooth impeller, not only can better uniform mixing be achieved, but also the production energy consumption will not be increased.

[0059] The homogenization cooling interlayer 12 is a homogenization liquid cooling interlayer that can cool the conveying channel, which is arranged outside the wall surface of the conveying channel in front of the comb-shaped tooth impeller 10 along the conveying direction of the homogenization component 2.

[0060] The liquid can be cold water or cold oil. By setting the homogenization liquid cooling interlayer, the mixture in the conveying channel can be cooled, improving its effect in subsequent stirring and emulsification.

[0061] The discharge ports of the homogenization component 2 are at least two, one of which is connected to the inlet of the emulsification tank through the external circulation pipe 14, and the other discharge port is left vacant as the discharge port 15.

[0062] The discharge port is arranged on the lower surface of the homogenization component. The purpose of this design is to be able to empty the homogenization component after one emulsification is completed, preventing the pollution of other materials during the next emulsification.

[0063] The feed ports of the homogenization component 2 are at least two, one of the feed ports is connected to the inlet of the pretreatment tank 1, and the other feed port is connected to the feed hopper 16.

[0064] Through the design of the feed hopper, materials that do not require pretreatment can be directly added through the hopper, improving production efficiency.

[0065] The comb-tooth impeller 10 is an annular gear extending along the axial direction. There are evenly distributed comb-like teeth 17 on the annular gear. There is a crushing induction impeller 11 on the inner wall of the annular gear. The crushing induction impeller 11 is a comb-tooth impeller extending along the radial direction of the annular gear and fixedly connected to the inner wall of the annular gear.

[0066] With this design, the crushing induction impeller makes the mixed materials form a spiral eddy current. And with the cooperation of the comb-tooth impeller, the materials forming the spiral eddy current are further pulverized and mixed by the comb-like teeth, improving the overall mixing uniformity.

[0067] There is also a comb-shaped prism 18 that is smaller than the comb-like teeth 17 and fixed to the inner wall of the homogenization component and can cooperate with the comb-tooth impeller around the comb-tooth impeller.

[0068] Due to the speed difference between the fixed comb-shaped prism and the comb-tooth impeller, the mixed materials are ground at the gap, forming a more uniform mixed material to improve the emulsification effect of the mixture in the next step.

[0069] Embodiment 2

[0070] As Figures 1 to 3 shown, the workbench includes a base 19 and a cabinet 20 arranged on the base. The base 19 is rectangular. The cabinet 20 reserves working areas 21 along both the length direction and the width direction of the base 19. From the node where the working area is reserved in the width direction, the cabinet 20 is recessed inward to form a first wall surface 22 along the length direction of the base 19 and a second wall surface 23 that forms a 120° angle with the first wall surface 22.

[0071] With this design, when an employee faces the angle between the first wall surface and the second wall surface, they can operate all the components on the entire workbench at the same time.

[0072] The emulsifying tank is arranged on the wall surface of the included angle area formed after the combination of the first wall surface 22 and the second wall surface 23.

[0073] Through this design, the integration degree of the emulsifying tank is improved, so that the small emulsifying tank can be just accommodated in the area of the included angle formed by the first wall surface and the second wall surface.

[0074] The base 19 sets the right angle formed by the length direction side and the width direction side of the base 19 in a chamfered form in the direction towards the first wall surface 22 and the second wall surface 23.

[0075] If it is in a right angle form, when employees work alternately on each side, their feet may hit the corner, causing injury to the employees. However, by adopting the chamfered form, this can be well avoided.

[0076] An operation interface 3 is provided at the upper surface of the cabinet body corresponding to the wall surface in the length direction of the cabinet body 20 combined with the second wall surface 23.

[0077] Through this design, when the employee faces the operation interface, they can simultaneously touch the cover of the emulsifying tank, improving the convenience of operation.

[0078] There is also an electric control cabinet 24 for placing a controller at the extension of the length direction of the cabinet body 20 combined with the second wall surface 23.

[0079] Embodiment 3

[0080] As Figures 1 to 3 shown, the emulsifying tank includes a tank body 25 and a second rotating shaft 26 arranged on one side of the opening of the tank body 25. A cover body 6 that can rotate around the second rotating shaft 26 and laterally cover the tank body 25 is provided on the second rotating shaft 26. The lower surface of the connection part between the cover body 6 and the second rotating shaft 26 is connected to the top end of a hydraulic rod 27, and the bottom end of the hydraulic rod 27 is arranged on the side surface of the tank body 25.

[0081] Through this design, the cover body is different from the ordinary lifting structure. It adopts a flip cover structure. The flip cover structure has fewer components compared to the lifting structure, which can save a large amount of equipment space, especially the height space. Through the cooperation of the hydraulic rod, the cover body can be flipped up more labor - saving.

[0082] There is a through - hole on the cover body 6. A third rotating shaft 28 passes through the cover body 6 and is connected to a stirring paddle 5 arranged in the tank body 25. The part of the third rotating shaft 28 exposed outside the cover body 6 is connected to a second motor 7 located on the upper surface of the cover body 6.

[0083] The stirring paddle 5 is a V - shaped stirring paddle.

[0084] Embodiment 4

[0085] As Figure 5 and Figure 6As shown, a third rotating shaft 28 is connected to the axisymmetric center of the V-shaped stirring paddle of the emulsifying tank. On the outer side surfaces of each side of the V-shaped stirring paddle, there are protruding shaft-shaped scraping wall plate mounting seats 29 extending along the length direction of each side. A two-way scraping wall plate 30 is mounted on the scraping wall plate mounting seat 29.

[0086] At the mounting end of the shaft-shaped scraping wall plate mounting seat, there is also a limiting portion 31 to prevent the two-way scraping wall plate from turning over excessively, enabling it to scrape the inner wall of the tank within the limited range.

[0087] In the middle of the scraping wall plate mounting seat 29, there is a protrusion 32 with a diameter larger than the axial diameter. On the inner wall of the mounting hole 33 of the two-way scraping wall plate, there is a clamping groove (not shown) that can cooperate with the protrusion. The protruding height of the protrusion 32 is greater than the recess depth of the clamping groove.

[0088] By means of interference fit, the stability of the two-way scraping wall plate after installation can be improved.

[0089] At both ends of the V-shaped stirring paddle, there are also extension parts along the height direction of the tank body. On the outer surface of the extension parts, there are also scraping wall plate mounting seats and two-way scraping wall plates that cooperate with the scraping wall plate mounting seats.

[0090] There is an inclined surface at the bottom of the tank body, so a V-shaped stirring paddle is used. Through the extension parts, the inner wall of the tank body in the vertical direction can be scraped.

[0091] The two-way scraping wall plate includes a nesting part that can be nested on the scraping wall plate mounting seat, and a two-way scraping wall plate 30 with a trapezoidal cross-section integrally formed with the nesting part. The nesting part has a mounting hole 33.

[0092] Through the design with a trapezoidal cross-section, it can better fit the inner wall of the tank.

Claims

1. A small external circulation emulsifier, characterized in that: It includes a workbench. Inside the workbench, there is a pretreatment tank. The pretreatment tank is connected to a homogenization component arranged outside the workbench. The outlet of the homogenization component is connected to an emulsification tank outside the workbench. The bottom discharge port of the emulsification tank is connected to the homogenization component. On the upper surface of the workbench, there is also an operation interface capable of controlling the states of each component. The stirring impeller in the pretreatment tank is connected to a first motor extending out of the upper surface of the workbench. There is a stirring paddle in the emulsification tank, and the stirring paddle is connected to a second motor arranged on the upper surface of the cover of the emulsification tank. On the side wall of the homogenization component, there is a third motor connected to the first rotating shaft in the homogenization component. The three motors are all connected to a controller, and the controller is connected to the operation interface. The homogenization component includes a comb-shaped tooth impeller capable of rotating driven by the first rotating shaft and a crushing induction impeller in the comb-shaped tooth impeller. Along the conveying direction of the homogenization component, a homogenization cooling interlayer is also provided in front of the crushing induction impeller, and the homogenization cooling interlayer is connected to the discharge port; The comb-shaped tooth impeller is an axially extending annular gear. On the annular gear, there are evenly distributed wooden comb-shaped teeth. Inside the inner wall of the annular gear, there is a crushing induction impeller, and the crushing induction impeller is a comb-shaped tooth impeller fixedly connected to the inner wall of the annular gear and extending radially along the annular gear; Outside the periphery of the comb-shaped tooth impeller, there is also a comb-shaped prism fixed to the inner wall of the homogenization component and having a lower density of wooden comb-shaped teeth than the comb-shaped tooth impeller and capable of cooperating with the comb-shaped tooth impeller; The first rotating shaft of the homogenization component is arranged horizontally, and the homogenization component performs material crushing before emulsification in the emulsification tank.

2. The small external circulation emulsifier according to claim 1, characterized in that: The homogenization cooling interlayer is a homogenization liquid cooling interlayer capable of cooling the conveying channel and arranged outside the wall surface of the conveying channel behind the comb-shaped tooth impeller along the conveying direction of the homogenization component.

3. The small external circulation emulsifier according to claim 1, characterized in that: The discharge port of the homogenization component is at least two. One of them is connected to the inlet of the emulsification tank through an external circulation pipe, and the other discharge port is left vacant as a discharge port.

4. The small external circulation emulsifier according to claim 1, characterized in that: The feed port of the homogenization component is at least two. One of the feed ports is connected to the inlet of the pretreatment tank, and the other feed port is connected to a feed hopper.

5. The small external circulation emulsifier according to claim 1, characterized in that: The workbench includes a base and a cabinet arranged on the base. The base is rectangular. The cabinet reserves working areas along both the length direction and the width direction of the base. From the node of the working area reserved in the width direction, the cabinet is recessed inward to form a first wall surface along the length direction of the base and a second wall surface with an included angle of 120° with the first wall surface.

6. The small external circulation emulsifier according to claim 5, characterized in that: The emulsification tank is arranged on the wall surface of the included angle area formed after the combination of the first wall surface and the second wall surface.

7. The small external circulation emulsifier according to claim 5, characterized in that: The base sets the right angle formed by the length direction side and the width direction side of the base in a notch form in the direction towards the first wall surface and the second wall surface.

8. The small external circulation emulsifying machine according to claim 5, characterized in that: an operation interface is provided at the upper surface of the cabinet corresponding to the wall surface in the length direction of the cabinet combined with the second wall surface.

9. The small external circulation emulsifying machine according to claim 5, characterized in that: there is also an electric control cabinet for placing a controller at the extension of the length direction of the cabinet combined with the second wall surface.

10. The small external circulation emulsifying machine according to claim 1, characterized in that: the emulsifying tank includes a tank body and a second rotating shaft provided on one side of the opening of the tank body. A cover body that can rotate around the second rotating shaft and laterally cover the tank body is provided on the second rotating shaft. The lower surface of the connection between the cover body and the second rotating shaft is connected to the top end of a hydraulic rod, and the bottom end of the hydraulic rod is arranged on the side surface of the tank body.

11. The small external circulation emulsifying machine according to claim 10, characterized in that: there are through holes on the cover body. A third rotating shaft passes through the cover body and is connected to a stirring paddle arranged in the tank body. The part of the third rotating shaft exposed outside the cover body is connected to a second motor located on the upper surface of the cover body.

12. The small external circulation emulsifying machine according to claim 11, characterized in that: the stirring paddle is a V-shaped stirring paddle.

13. The small external circulation emulsifying machine according to claim 12, characterized in that: the axisymmetric center of the V-shaped stirring paddle is connected to the third rotating shaft. Axial scraping wall plate mounting seats protruding along the length direction of each side are provided on the outer side surfaces of each side of the V-shaped stirring paddle, and two-way scraping wall plates are mounted on the scraping wall plate mounting seats.

14. The small external circulation emulsifying machine according to claim 13, characterized in that: there is a protrusion with a diameter larger than the axial diameter in the middle of the scraping wall plate mounting seat. A clamping groove that can cooperate with the protrusion is provided on the inner wall of the mounting hole of the two-way scraping wall plate, and the protruding height of the protrusion is greater than the recess depth of the clamping groove.

15. The small external circulation emulsifying machine according to claim 13, characterized in that: extension parts along the height direction of the tank body are also provided at both ends of the V-shaped stirring paddle, and scraping wall plate mounting seats and two-way scraping wall plates that cooperate with the scraping wall plate mounting seats are also provided on the outer surfaces of the extension parts.

16. The small external circulation emulsifying machine according to any one of claims 13 to 15, characterized in that: the two-way scraping wall plate includes a nesting part that can be nested on the scraping wall plate mounting seat, and a two-way scraping wall plate with a trapezoidal cross-section integrally formed with the nesting part. The nesting part has a mounting hole.

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