Vacuum homogenizing emulsifying machine for laboratory research and development

Abstract

The invention relates to a vacuum homogenizing emulsifying machine for laboratory research and development, which solves the technical problems of incapability of premixing, low heating efficiency and low cleaning efficiency of the existing laboratory vacuum homogenizing emulsifying machine, and comprises an emulsifying tank, a stirring shaft is rotationally mounted on the emulsifying tank, a premixing box is fixed in the emulsifying tank, and a premixing net cylinder is fixed below the premixing box; a premixing cylinder is fixed to the premixing net cylinder, a premixing cutting cylinder is rotationally matched with the outer portion of the premixing net cylinder, a conical boss is fixed to the lower end of the premixing net cylinder, a gap is reserved between the conical boss and the premixing cylinder, a plurality of premixing channels which are evenly distributed in the circumferential direction are formed in the conical surface of the conical boss, and a plurality of premixing felting needles which are evenly distributed are fixed in the premixing channels. According to the emulsion premixing device, emulsion is cut through the premixing box, the rotary cutter and the premixing cutting cylinder, then the emulsion is impacted and mixed through the premixing baffle ring, and premixing of the emulsion is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and specifically to a vacuum homogenizing emulsifier for laboratory research and development. Background Art

[0002] The vacuum homogenizing emulsifier mainly feeds materials through vacuum negative pressure, and uses the high-speed rotation and cutting of the engine homogenizing head to shear, disperse, and impact the materials, making the materials finer and promoting the blending of oil and water. Emulsifiers are divided into vacuum homogenizing emulsifiers for industrial production and homogenizing emulsifiers for laboratories according to different application environments. The emulsifiers for industrial production are large in volume and mainly used for large-scale industrial production. The emulsifiers used in laboratories are mainly used for experimental research and small-scale production. This application mainly focuses on the improvement of the vacuum homogenizing emulsifier for laboratory use.

[0003] During the research and development process of our company's production of food emulsifiers and food special powders, such as diacetyl tartaric acid esters of mono- and diglycerides, mono- and diglyceride fatty acids, molecular distilled monoglycerides, frit quality improvers, dumpling improvers and other food additives, the vacuum homogenizing emulsifier for laboratory use is required. Taking diacetyl tartaric acid esters of mono- and diglycerides as an example, in the research and development, tartaric acid and acetic anhydride need to be mixed in the homogenizing emulsifier as raw materials. However, during the use of the vacuum homogenizing emulsifier, it is found that there is a problem of a gap between the product quality and the expectation. Through the analysis and experience summary of the R & D personnel, the following are obtained: 1. Since the vacuum homogenizing emulsifier used in experiments is different from the homogenizing emulsifier for industrial production, in addition to its own emulsifying and mixing function, the homogenizing emulsifier for industrial production also has a special premixing device. However, due to the fact that the occupied volume of the premixing device is twice the mixing volume and the additional cost is expensive, it is not suitable for laboratory use.

[0004] 2. During the emulsification process, the raw materials need to be preheated and emulsified, and after the emulsification is completed, it is also necessary to cool and discharge the materials. The heating in the laboratory is mainly through the wall thickness sandwich method, and there is also heating through the inside of the stirring shaft in the industrial emulsifier. However, no matter which method, the heat transfer method is not cyclic heating. As the mixing operation proceeds, the temperature of the heating source in the sandwich and the stirring shaft will gradually decrease, resulting in the mixing quality being affected by the temperature.

[0005] 3. Since the homogenizing emulsifier used in the laboratory is much smaller than that used in industry, it is impossible to achieve automatic cleaning during cleaning. After each mixing is completed, manual cleaning is required, and the cleaning system for industrial use is too costly and not suitable for laboratory use.

[0006] On this basis, the present invention provides a vacuum homogenizing emulsifier for laboratory research and development to solve the above problems. Summary of the Invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a vacuum homogenizing emulsifier for laboratory research and development. The present invention effectively solves the technical problems of the existing laboratory vacuum homogenizing emulsifier, such as inability to premix, low heating efficiency, and low cleaning efficiency.

[0008] A vacuum homogenizing emulsifier for laboratory research and development includes an emulsifying tank, an emulsifying cover is buckled above the emulsifying tank, and a stirring shaft is rotatably installed in the emulsifying tank. The characteristic is that symmetrically arranged premixing boxes are fixed in the emulsifying tank and are connected to the outside above. A premixing mesh cylinder is fixed below the premixing box, a premixing cylinder is fixed on the premixing mesh cylinder, a premixing cutting cylinder placed in the premixing cylinder is rotationally matched outside the premixing mesh cylinder, a conical boss placed in the premixing cylinder is fixed at the lower end of the premixing mesh cylinder, a gap is reserved between the conical boss and the premixing cylinder, and a plurality of circumferentially evenly distributed premixing channels are opened on the conical surface of the conical boss. A plurality of evenly distributed premixing thorns are fixed in the premixing channels, a chassis is slidably installed up and down at the lower end of the conical boss, and a premixing retaining ring that slides in the gap is fixed on the outer circumference of the chassis.

[0009] Preferably, a rotating cutting wheel is rotatably installed in the premixing box, the stirring shaft penetrates the premixing box, and a rotating cutter is fixed on the stirring shaft placed in the premixing box.

[0010] Preferably, the rotating cutting wheel is coaxially connected with a driving disc, a short rod is eccentrically rotatably installed on the driving disc, the short rod is rotatably connected with a long rod, one end of the long rod is hinged with a pull rod, and a pull column is fixed at the end of the pull rod. The upper end of the premixing cutting cylinder is rotatably installed on the premixing cylinder through a rotating ring. The upper end of the premixing cutting cylinder integrally extends through the premixing cylinder and is fixed with a driving turntable placed on the premixing cylinder. An arc-shaped pulling arc groove is opened on the driving turntable, and the pull column slides in the pulling arc groove.

[0011] Preferably, a convex bottom groove is opened at the lower end of the conical boss, a cylindrical cam is fixedly sleeved on the stirring shaft in the convex bottom groove, an annular cam groove is opened on the cylindrical cam, a convex slide groove is opened on the bottom surface of the conical boss, a chassis slide rod that slides in the convex slide groove is fixed on the chassis, and a slide rod placed in the convex bottom groove is fixed on the chassis. A slide column that matches in the cam groove is fixed at the end of the slide rod.

[0012] Preferably, an inner spiral blade and an outer spiral blade are fixed at the lower end of the stirring shaft. The outer diameter of the inner spiral blade gradually becomes smaller from top to bottom, the outer diameter of the outer spiral blade gradually becomes larger from top to bottom, and the inner spiral blade and the outer spiral blade are connected by a plurality of cross bars.

[0013] Preferably, an emulsifying shaft is rotatably installed beside the stirring shaft, an emulsifying head is fixed at the lower end of the emulsifying shaft, the emulsifying head includes a stator fixed at the lower end of the emulsifying shaft, a rotor is installed outside the stator, and a shearing piece is fixed at the lower end of the emulsifying shaft.

[0014] Preferably, the emulsifying tank is provided with a heating interlayer, an inlet for heat and an outlet for heat are formed in the heating interlayer, a circulating bottom pipe placed at the bottom of the emulsifying tank is communicated with the bottom of the heating interlayer, the interiors of the stirring shaft and the emulsifying shaft are cavities, a cooling interlayer is arranged at the bottom of the emulsifying tank, an inlet for cold and an outlet for cold are formed in the cooling interlayer, the circulating bottom pipe is rotationally communicated with the emulsifying shaft, and the end of the circulating bottom pipe is rotationally communicated with the stirring shaft and communicated with the cooling interlayer through a three-way pipe. The upper ends of the stirring shaft and the emulsifying shaft are communicated with the same pipe I, one end of the pipe I is communicated with a heating constant temperature box, the heating constant temperature box is communicated with the inlet for heat through a pipe II, the other end of the pipe I is communicated with a cooling constant temperature box, and the cooling constant temperature box is communicated with the inlet for cold through a pipe III.

[0015] Preferably, an inner shaft through pipe is fixed in the stirring shaft and the emulsifying shaft, the outside of the inner shaft through pipe is a cleaning cavity, a plurality of uniformly distributed spray heads are installed in the cleaning cavity, and an electromagnetic three-way valve is installed at the lower end of the inner shaft through pipe.

[0016] Preferably, it further includes a machine frame, a driving shell is slidably installed on the machine frame up and down, a stirring motor is fixedly installed at the upper end of the driving shell, the stirring motor is fixedly connected with a stirring shaft, an emulsifying motor is further fixedly installed on the driving shell, the emulsifying motor is coaxially connected with a driving pulley, the driving pulley is connected with a driven pulley through a belt, and the driven pulley is connected with an emulsifying shaft.

[0017] Preferably, a reduction motor is fixed on the machine frame, the reduction motor is connected with a lifting lead screw, the driving shell is threadedly connected with the lifting lead screw, limiting rods placed on the machine frame are fixed on both sides of the lifting lead screw, and the driving shell is slidably placed on the limiting rods.

[0018] The present invention has the following technical effects: 1. The present invention collides and fuses raw materials in advance through a premixing box, crushes and shears the emulsion under the shearing of a rotary cutter, cuts the emulsion through a premixing cutting cylinder, and impacts and mixes the emulsion through a premixing retaining ring. Through multiple times of premixing in advance, the premixing of the emulsion is realized to improve the product quality of subsequent emulsifying and stirring.

[0019] 2. The present invention realizes the circulating flow of the heat source during heating through the circulating bottom pipe, the stirring shaft, the emulsifying shaft, the heating constant temperature box and the heating interlayer, ensures the control of the heat source temperature, thereby ensuring the product quality of the emulsified emulsion. It also realizes the circulating flow of the cold source during cooling through the circulating bottom pipe, the stirring shaft, the emulsifying shaft, the cooling constant temperature box and the cooling interlayer, ensures the control of the cold source temperature, and thereby ensures the liquid discharging efficiency when discharging the emulsion.

[0020] 3. Through the control of the inner shaft pipeline and the electromagnetic three-way valve, the present invention not only realizes the circulating flow of the heat source and the cold source, but also can realize the convenient self-cleaning of the emulsifying tank, the stirring shaft and the emulsifying shaft through the switching of the electromagnetic three-way valve. Description of the Drawings

[0021] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the accompanying drawings: Figure 1 It is an overall three-dimensional schematic diagram of the present invention.

[0022] Figure 2 It is an overall three-dimensional schematic diagram of the outer shape of the emulsifying tank of the present invention.

[0023] Figure 3 It is a three-dimensional schematic diagram of the cross-section of the emulsifying tank of the present invention and the three-way pipe part.

[0024] Figure 4 It is an enlarged three-dimensional schematic diagram of the premixing box part and the emulsifying head part in the emulsifying tank of the present invention.

[0025] Figure 5 It is a three-dimensional schematic diagram of the premixing box and the conical boss of the present invention.

[0026] Figure 6 It is a sectional three-dimensional schematic diagram of the premixing box and the conical boss of the present invention.

[0027] Figure 7 It is a schematic diagram of the rotational connection mode between the inner shaft through pipe and the first pipe of the present invention.

[0028] Reference numerals: 1 - emulsifying tank; 2 - emulsifying cover; 3 - stirring shaft; 4 - premixing box; 5 - premixing mesh cylinder; 6 - premixing cylinder; 7 - premixing cutting cylinder; 8 - conical boss; 9 - interval; 10 - premixing channel; 11 - premixing needle; 12 - chassis; 13 - premixing retaining ring; 14 - rotating cutting wheel; 15 - rotating cutter; 16 - driving disc; 17 - short rod; 18 - long rod; 19 - pull rod; 20 - pull column; 21 - rotating ring; 22 - driving turntable; 23 - pulling arc groove; 24 - boss bottom groove; 25 - conical boss; 26 - cam groove; 27 - boss sliding groove; 28 - chassis sliding rod; 29 - sliding rod; 30 - sliding column; 31 - inner spiral blade; 32 - outer spiral blade; 33 - cross bar; 34 - emulsifying shaft; 35 - stator; 36 - rotor; 37 - shearing slice; 38 - heating interlayer; 39 - heat inlet; 40 - heat outlet; 41 - circulating bottom pipe; 42 - cooling interlayer; 43 - cold inlet; 44 - three-way pipe; 45 - first pipe; 46 - heating constant temperature box; 47 - second pipe; 48 - cooling constant temperature box; 49 - third pipe; 50 - inner shaft through pipe; 51 - cleaning chamber; 52 - spray head; 53 - electromagnetic three-way valve; 54 - frame; 55 - driving shell; 56 - stirring motor; 57 - emulsifying motor; 58 - driven pulley; 59 - reduction motor; 60 - lifting lead screw; 61 - limiting rod. Detailed implementation manners

[0029] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of the embodiments with reference to the attached drawings. The content mentioned in the following embodiments is all referenced to the drawings of the specification. Figures 1 to 7 In the following detailed description of the embodiments, it will be clearly presented. The content mentioned in the following embodiments is all referenced to the drawings of the specification.

[0030] The exemplary embodiments of the present invention will be described below with reference to the drawings.

[0031] The present invention is a vacuum homogenizing emulsifier for laboratory research and development, mainly used in the laboratory research and development stage of food additives, special flours, etc. of our company. It includes an emulsifying tank 1 with a cavity inside. An emulsifying cover 2 is buckled above the emulsifying tank 1. A stirring shaft 3 is rotatably installed in the emulsifying tank 1 for finely dispersing and emulsifying multiple immiscible liquid phases. A premixing box 4 is fixed in the emulsifying tank 1. The inside of the premixing box 4 is a cavity, with a T-shaped cross-section and symmetric ends inside. Two feeding ports are symmetrically opened on the upper end surface. A communication port is opened on the corresponding emulsifying cover 2. The feeding ports are connected to the external vacuum feeding pipes. A premixing mesh cylinder 5 is fixed below the middle of the premixing box 4. A plurality of circumferentially evenly distributed mesh holes are opened on the premixing mesh cylinder 5. A premixing cylinder 6 is fixed on the premixing mesh cylinder 5. The inside of the premixing cylinder 6 is a cavity with an open lower end, and the premixing mesh cylinder 5 is wrapped inside it. A premixing cutting cylinder 7 rotatably connected to the premixing mesh cylinder 5 is arranged in the premixing cylinder 5. A plurality of mesh holes are opened on the premixing cutting cylinder 7. The mesh holes on the premixing mesh cylinder 5 and the premixing cutting cylinder 7 can correspond. A conical boss 8 is fixed at the lower end of the premixing mesh cylinder 5. The conical boss 8 is placed in the premixing cylinder 6. A plurality of premixing channels 10 are opened on the conical surface of the conical boss 8. A plurality of evenly distributed premixing needles 11 are fixed on the premixing channels 10. A gap 9 is reserved between the outer circumference of the conical boss 8 and the inner wall of the premixing cylinder 6. A chassis 12 is slidably installed up and down at the lower end of the conical boss 8. A premixing retaining ring 13 facing upward is fixed on the outer circumference of the chassis 12. The premixing retaining ring 13 can slide in the gap 9, so that the gap 9 can be intermittently opened and closed.

[0032] Since the homogenizing emulsifier used in the laboratory does not have the function of premixing, directly putting the raw materials into the emulsifying tank for emulsification results in low emulsification efficiency. In the present invention, the raw materials are respectively introduced into the premixing box 4 through vacuum. The raw materials in two directions move towards each other, collide and mix in the middle of the premixing box 4 and flow out from the lower part of the premixing box 4 into the premixing mesh cylinder 5. The premixing cutting cylinder 7 reciprocally rotates on the outside of the premixing mesh cylinder 5, screens and shears the emulsion passing through the premixing mesh cylinder 5 and the premixing cutting cylinder 7 and flows into the premixing cylinder 6. The emulsion flows from the conical boss 8 to the gap 9, and is punctured and crushed by the premixing needles 11 when passing through the premixing channels 10. Finally, it is mixed at the gap 9, and is squeezed and collided at the premixing retaining ring 13 at the gap 9, so that the emulsion is intermittently mixed and intermittently collided in the gap 9 and then spills out into the emulsifying tank 1 to start emulsifying and stirring.

[0033] It should be noted that spare feed pipes are also connected to both sides of the premixing box 4, and whether to use the spare feed pipes is selected according to the quantity of raw materials.

[0034] As an embodiment, rotary cutting wheels 14 are respectively rotatably installed at two feed ports in the premixing box 4, the rotation directions of the rotary cutting wheels 14 both face the central axis, the stirring shaft 3 is rotatably installed in the emulsifying tank 1, a part of the stirring shaft 3 is placed in the emulsifying tank 1, and a part penetrates through the premixing box 4, and a rotary cutter 15 is fixedly sleeved on the part of the stirring shaft 3 in the premixing box 4.

[0035] When the raw materials enter the premixing box 4, they impact on the rotary cutting wheels 14, are first collided and shredded by the rotary cutting wheels 14, then flow towards the central axis, collide and mix in the middle of the premixing box 4 and then flow downward, and then the flowing emulsion liquid is cut and pulverized by the rotary cutter 15, further improving the compatibility of the emulsion liquid.

[0036] As an embodiment, the rotary cutting wheel 14 is coaxially connected with a driving disc 16 placed outside the premixing box 4, an eccentric shaft is fixedly installed on the driving disc 16 eccentrically, a short rod 17 is rotatably installed on the eccentric shaft, the short rod 17 is rotatably connected with a long rod 18, the end of the long rod 18 is hinged with a pull rod 19, and a pull column 20 is fixedly installed at the lower end of the end of the pull rod 19.

[0037] A rotating ring 21 placed in the premixing cylinder 6 is fixedly installed at the upper end of the premixing cutting cylinder 7, a corresponding rotating groove is opened on the inner top wall of the premixing cylinder 6, the rotating ring 21 is rotatably placed in the rotating groove, the upper end of the premixing cutting cylinder 7 integrally extends through the premixing cylinder 6 and then is fixedly installed with the driving turntable 16, and a pulling arc groove 23 is opened on the upper end surface of the driving turntable 16.

[0038] The pull column 20 is slidably placed in the pulling arc groove 23.

[0039] In the above embodiment, the rotation installation of the premixing cutting cylinder 7 is specifically that in addition to being impacted and shredded by the rotary cutting wheel 14, the raw materials passing through the feed port will also impact on the rotary cutting wheel 14, causing the rotary cutting wheel 14 to start rotating. The rotary cutting wheel 14 coaxially drives the driving disc 16 to rotate, the driving disc 16 drives the short rod 17 to rotate, the short rod 17 pulls the long rod 18 to rotate. Since the angle of the long rod 18 will change, the long rod 18 is hinged with the pull rod 19, so that the pull column 20 on the pull rod 19 always remains horizontal and slides in the pulling arc groove 23. Since the pulling chute 23 is arc-shaped, the pull column 20 drives the driving turntable 16 to make a reciprocating motion, causing the premixing cutting cylinder 7 to make a reciprocating motion. Since the premixing cutting cylinder 7 and the premixing mesh cylinder 5 are both provided with mesh holes, the mesh holes on the premixing cutting cylinder 7 and the mesh holes of the premixing mesh cylinder 5 are intermittently overlapped, so that the emulsion liquid is switched between reciprocating circulation and closing. At the same time, the premixing cutting cylinder 7 performs reciprocating cutting on the flowing emulsion liquid to improve the premixing efficiency.

[0040] It should be noted that since the driving force for the rotation of the premixing cutting cylinder 7 comes from the impact of the raw materials, in order to ensure the normal rotation of the premixing cutting cylinder 7, the driving disc 16, short rod 17, long rod 18, pull rod 19, pull column 20, etc. are made of lightweight materials such as PVC, PVA, and ABS, and the cylinder wall of the premixing cutting cylinder 7 is a thin wall with a thickness of 2 - 5 mm.

[0041] It should also be noted that an installation bin is fixed on the outer side of the premixing box 4, and the driving disc 16, short rod 17, long rod 18, pull rod 19, pull column 20, and driving disc 16 are installed in the installation bin.

[0042] As an embodiment, a convex platform bottom groove 24 is opened at the center of the lower end of the conical convex platform 8, a cylindrical cam 25 is fixedly sleeved on the stirring shaft 3 and placed in the convex platform bottom groove 24, an annular cam groove 26 is provided on the cylindrical cam 25, and two symmetrically arranged convex platform sliding grooves 27 are opened on the bottom surface of the conical convex platform 8.

[0043] A chassis sliding rod 28 that is slidably matched with the convex platform sliding groove 27 is fixed on the chassis 12, a sliding rod 29 placed in the convex platform bottom groove 24 is fixed on the chassis 12, and a sliding column 30 that is matched in the cam groove 26 is fixed at the end of the sliding rod 29.

[0044] As the stirring shaft 3 rotates, the stirring shaft 3 drives the cylindrical cam 25 to rotate. Since the cam groove 26 is an annular high - low groove, when the cam groove 26 rotates, the sliding column 30 drives the chassis 12 to move up and down reciprocally under the limitation of the chassis sliding rod 28 and the convex platform sliding groove 27 through the sliding rod 29, so that the premixing retaining ring 13 moves up and down in the interval 9, realizing the intermittent opening and closing of the interval 9, thereby impacting and mixing the emulsion to improve the premixing emulsion efficiency.

[0045] As an embodiment, an inner double - layer spiral blade 31 and an outer spiral blade 32 are fixed on the stirring shaft 3 inside the emulsifying tank 1 and below the premixing cylinder 6. The outer diameter of the inner spiral blade 31 decreases from top to bottom, and the outer diameter of the outer spiral blade 32 increases from top to bottom. The inner spiral blade 31 and the outer spiral blade 32 are fixedly connected by a plurality of cross bars 33. The emulsion is stirred by the double - layer stirring of the inner spiral blade 31 and the outer spiral blade 32, and is subjected to comprehensive actions such as crushing, cutting, shearing, and tearing, homogenizing, dispersing, and emulsifying the emulsion. After continuous reciprocating cycle stirring, a delicate and bubble - free emulsion is obtained to improve the mixing of the emulsion.

[0046] As an embodiment, in addition to the agitation of the inner spiral blade 31 and the outer spiral blade 32, an emulsifying shaft 34 is rotatably installed beside them. An emulsifying head is fixed to the lower end of the emulsifying shaft 34. The emulsifying head includes a stator 35 fixed to the lower end of the emulsifying shaft 34. A rotor 36 is rotatably installed outside the stator 35. A shearing blade 37 is fixed to the lower end of the emulsifying shaft 34.

[0047] The high tangential speed generated by the high-speed rotation of the emulsifying shaft 34 and the rotor 36 of the emulsifying head, as well as the strong kinetic energy brought by the high-frequency mechanical effect, cause the emulsion to be subjected to comprehensive actions such as strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing, and turbulence in the narrow gap between the stator and the rotor. As a result, the immiscible liquid phases are instantly and uniformly finely dispersed and emulsified. After high-frequency cyclic reciprocation, a stable high-quality product is finally obtained.

[0048] As an embodiment, in order to ensure the quality of the product, heating is required to promote the reaction during the emulsification process to balance the reaction rate and the suppression of side reactions. Currently, heating is mainly achieved through the wall thickness sandwich layer or the stirring shaft, but this heat transfer is not cyclic. As a result, the heat dissipation inside the wall thickness sandwich layer and the stirring shaft during the reaction process causes the temperature to gradually decrease, resulting in poor temperature control efficiency.

[0049] Specifically, a heating sandwich layer 38 is provided on the wall thickness of the emulsification tank 1. An inlet heat port 39 and an outlet heat port 40 are opened on the heating sandwich layer 38 for passing through a heat source medium, such as high-temperature water, high-temperature steam, heat-conducting oil, etc. The inlet heat port 39 is used for introducing, and the outlet heat port 40 is used for discharging.

[0050] A cooling sandwich layer 42 is provided at the bottom of the emulsification tank 1 for cooling and discharging the emulsion after emulsification. An inlet cooling port 43 and an outlet cooling port are opened on the cooling sandwich layer 42 for introducing and discharging a cooling source, such as cold water or nitrogen.

[0051] A circulating bottom pipe 41 is fixed at the bottom of the emulsification tank 1. One end of the circulating bottom pipe 41 is connected to the heating sandwich layer 38, and the other end is respectively connected to the circulating bottom pipe 41, the stirring shaft 3, and the cooling sandwich layer 42 through a three-way pipe 44. The three-way pipe 44 is connected to the stirring shaft 3 through a rotating sleeve, and the middle of the circulating bottom pipe 41 is also rotatably connected to the emulsifying shaft 34 through a rotating sleeve.

[0052] The interiors of the stirring shaft 3 and the emulsifying shaft 34 are cavities.

[0053] The upper ends of the stirring shaft 3 and the emulsifying shaft 34 are connected to the same pipe 45. One end of the pipe 45 is connected to a heating constant-temperature box 46. The heating constant-temperature box 46 is connected to the inlet heat port 39 through a pipe 47. The other end of the pipe 45 is connected to a cooling constant-temperature box 48. The cooling constant-temperature box 48 is connected to the inlet cooling port 43 through a pipe 49. Manual valves and solenoid valves are installed on the pipes.

[0054] When the emulsification reaction occurs, turn on the heating thermostat 46. The heat source in the heating thermostat 46 enters the heating jacket 38 through the second pipeline 47 from the heat inlet 39, conducts heat transfer heating to the emulsification tank 1, then enters the stirring shaft 3 and the emulsification shaft 34 respectively after passing through the circulating bottom pipe 41, and then flows back to the heating thermostat 46 through the first pipeline 45, forming a heating heat cycle, maintaining the circulating flow of the heat source in the heating jacket 38, the stirring shaft 3, and the emulsification shaft 34, ensuring the control of the temperature during heating, and it can be discharged from the heat outlet 40 after use.

[0055] Before discharging is required after the emulsification is completed, turn on the cooling thermostat 48. The cold source in the cooling thermostat 48 enters the cooling jacket 42 through the third pipeline 49 from the cold inlet 43, enters the stirring shaft 3 and the emulsification shaft 34 from the three-way pipe 44, and then flows back to the cooling thermostat 48 through the first pipeline 45, maintaining the circulating flow of the cold source in the cooling jacket 42, the stirring shaft 3, and the emulsification shaft 34, ensuring the control of the cooling temperature during liquid discharge, and it can be discharged from the cold outlet when not in use.

[0056] It should be noted that corresponding pump bodies are installed in the heating thermostat 46 and the cooling thermostat 48.

[0057] As an embodiment, the inside of the stirring shaft 3 and the emulsification shaft 34 is a cavity, and an inner shaft through pipe 50 is fixed at the upper end of the cavity. The inside of the inner shaft through pipe 50 is a cavity and is transparent at both ends. At this time, a cleaning cavity 51 is formed between the inner shaft through pipe 50 and the inner wall of the stirring shaft 3 (emulsification shaft 34). The inside of the cleaning cavity 51 is a cavity, closed at the upper end and open at the lower end. A plurality of cleaning holes are opened on the outer wall of the stirring shaft 3 (emulsification shaft 34) of the cleaning cavity 51. Similarly, cleaning holes are also opened on the stirring shaft 3 in the premixing box 4 and the premixing mesh cylinder 5. Spray nozzles 52 are installed in the cleaning holes. An electromagnetic three-way valve 53 is installed at the lower end of the inner shaft through pipe 50. One connection is connected to the circulating bottom pipe 41, one connection is connected to the inner shaft through pipe 50, and one connection is connected to the cleaning cavity 51.

[0058] In the above embodiment, the heat source or cold source introduced into the stirring shaft 3 and the emulsification shaft 34 is introduced into the inner shaft through pipe 50 for heating and cooling in this embodiment.

[0059] When cleaning, introduce them into the circulating bottom pipe 41 from the heating thermostat 46 and the cooling thermostat 48 respectively. At this time, the electromagnetic three-way valve 53 connects the circulating bottom pipe 41 and the cleaning cavity 51, and the inner shaft through pipe 50 is closed. Hot water and cold water enter the cleaning cavity 51 at different times in sequence, then are sprayed out from the spray nozzles 52, and then, with the rotation of the stirring shaft 3 and the emulsification shaft 34, clean the inner wall of the emulsification tank 1, between the stirring shaft 3 and the emulsification shaft 34, and the inner and outer walls of the premixing box 4.

[0060] As an embodiment, it further includes a machine frame 54. A drive housing 55 is slidably mounted up and down on the machine frame 54. A stirring motor 3 and an emulsifying motor 34 are fixed on the drive housing 55. The stirring motor 56 is fixedly connected to a stirring shaft 3 to realize the rotation of the stirring shaft 3. The emulsifying motor 57 coaxially drives a driving pulley. The driving pulley is connected to a driven pulley 58 through a belt, and the driven pulley 58 is connected to an emulsifying shaft 34 to realize the rotation of the emulsifying shaft 34.

[0061] It should be noted that an inner shaft through pipe 50 inside the stirring shaft 3 is rotationally communicated with a first branch pipe, and the first branch pipe is communicated with a first pipeline 45. An inner shaft through pipe 50 inside the emulsifying shaft 34 is rotationally communicated with a second branch pipe, and the second branch pipe is communicated with the first pipeline 45, so as to realize the circulation of the heat source and cold source of the stirring shaft 3 and the emulsifying shaft 34.

[0062] For a more detailed embodiment, a common rotational connection method is provided: At the upper end of the inner shaft through pipe 50 at the emulsifying shaft 34, a rotating sleeve placed on the driven pulley 58 is fixed. A second branch pipe is rotationally installed inside the rotating sleeve, and the second branch pipe is communicated with the first pipeline 45.

[0063] The upper end of the inner shaft through pipe 50 at the stirring shaft 3 extends to the outside of the cleaning cavity 51 of the stirring shaft 3, that is, the inner shaft through pipe 50 is longer than the cleaning cavity 51. A plurality of spaced large water inlets are opened on the side wall of the inner shaft through pipe 50 at the extending part. A rotating sleeve is rotationally installed outside the side wall of the inner shaft through pipe 50 at the extending part. The rotating sleeve is communicated with the first branch pipe, and the first branch pipe is communicated with the first pipeline 45.

[0064] As an embodiment, a reduction motor 59 is fixed on the machine frame 54. The reduction motor 59 is connected to a lifting lead screw 60. The drive housing 55 is in threaded match with the lifting lead screw 60. Limit rods 61 placed on the machine frame 54 are fixed on both sides of the lifting lead screw 60. The drive housing 55 is slidably placed on the limit rods 61. When the reduction motor 59 is started, the reduction motor 59 drives the lifting lead screw 60 to rotate. Under the action of the limit rods, the lifting lead screw 60 drives the drive housing 55 to lift, thereby driving the lifting of the stirring motor 56 and the emulsifying motor 57, and thus driving the overall up and down movement of the stirring shaft 3, the emulsifying shaft 34, the premixing box 4, etc.

[0065] It should be noted that sealing gaskets are installed at the lower ends of the stirring shaft 3 and the emulsifying shaft 34. The stirring shaft 3 and the emulsifying shaft 34 are rotatably installed in the rotating sleeves inside the circulating bottom pipe 41.

[0066] It should be noted that the reduction motor 59, the stirring motor 3, the emulsifying motor 34, and the electromagnetic three-way valve 53 are all connected to a power supply and a controller.

[0067] The overall principle of the present invention is: 1. The raw materials are sucked into the premixing box 4 under vacuum. After being scoured, impacted, and crushed by the rotary cutting wheel 14, they collide and mix in the premixing box 4 and then flow downward. After being crushed, dispersed, and sheared by the rotary cutting knife 15, they enter the premixing mesh cylinder 5. At the same time, the rotary cutting wheel 14 drives the driving disc 16 to rotate, the driving disc 16 drives the short rod 17 to rotate, the short rod 17 drives the long rod 18 to rotate, and the long rod 18 drives the pull column 20 on the pull rod 19 to move in the pulling arc groove 23, thereby driving the driving disc 16 to rotate reciprocally. The driving disc 16 drives the premixing cutting cylinder 7 to shear and mix the emulsion on the outer wall of the premixing mesh cylinder 5 and then flow into the premixing cylinder 6. Then, it flows through the premixing thorns 11 on the premixing channel 10 and is punctured into the interval 9, is impacted and mixed by the premixing retaining ring 13, and then intermittently flows into the emulsifying tank 1, and is further cut, dispersed, and mixed by the stirring shaft 3. At the same time, the stator 35, rotor 36, and cutting slices 37 on the emulsifying shaft 34 shear, centrifuge, separate, and break the emulsion.

[0068] 2. The rotation of the stirring shaft 3 is driven by the stirring motor 56, and the rotation of the emulsifying shaft 34 is driven by the emulsifying motor 57. The reduction motor 59 drives the stirring motor 56 and the emulsifying motor 57 to move up and down for work, maintenance, and repair.

[0069] 3. During mixing and heating, the heat source of the heating constant temperature box 46 enters the heating sandwich layer 38, the circulating bottom pipe 41, and the inner shaft through pipe 50 and then returns to the heating constant temperature box 46 to achieve heating circulation. The cold source of the cooling constant temperature box 48 enters the cooling sandwich layer 42, the circulating bottom pipe 41, and the inner shaft through pipe 50 and then returns to the cooling constant temperature box 48 to achieve cooling circulation.

[0070] It should be noted that a rotating sleeve is installed on the circulating bottom pipe 41, and the inner shaft through pipe 50 is rotatably installed on the circulating bottom pipe 41.

[0071] 4. During heating and cooling, the cleaning chamber 51 of the electromagnetic three-way valve 53 is closed and the inner shaft through pipe 50 is connected. During cleaning, water is supplied once or multiple times through the heating constant temperature box 46 and the cooling constant temperature box 48. The cleaning chamber 51 of the electromagnetic three-way valve 53 is opened, and water enters the cleaning chamber 51 and sprays out from the spray head 52 to clean the emulsifying tank 1, the stirring shaft 3, the emulsifying shaft 34, the premixing box 4, and the premixing cylinder 6.

[0072] 5. Finally, the reduction motor 59 rises, water enters through the circulating bottom pipe 41 to soak the emulsifying tank 1, and then the reduction motor 59 is reset, and the emulsifying tank 1 is cleaned again by stirring through the stirring shaft 3 and the emulsifying shaft 34.

[0073] The present invention has the following technical effects: 1. The present invention collides and fuses raw materials in advance through a premixing box, crushes and shears the emulsion under the shearing of a rotary cutter, then cuts the emulsion through a premixing cutting cylinder, and impacts and mixes the emulsion through a premixing retaining ring. Through multiple times of premixing in advance, the premixing of the emulsion is realized to improve the product quality of subsequent emulsification and stirring.

[0074] 2. The present invention realizes the circulating flow of heat sources during heating through a circulating bottom pipe, a stirring shaft, an emulsifying shaft, a heating constant temperature box, and a heating interlayer, ensuring the control of the heat source temperature, thereby ensuring the quality of the emulsified product of the emulsion. It also realizes the circulating flow of cold sources during cooling through a circulating bottom pipe, a stirring shaft, an emulsifying shaft, a cooling constant temperature box, and a cooling interlayer, ensuring the control of the cold source temperature, thereby ensuring the liquid discharging efficiency when the emulsion is discharged.

[0075] 3. Through the control of an inner shaft pipeline and an electromagnetic three-way valve, the present invention not only realizes the circulating flow of heat sources and cold sources, but also can realize the convenient self-cleaning of an emulsifying tank, a stirring shaft, and an emulsifying shaft through the switching of the electromagnetic three-way valve.

[0076] Although the content of the present invention has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and substitutions of the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A vacuum homogenizing emulsifier for laboratory research and development, comprising an emulsifying tank (1), an emulsifying cover (2) being buckled on the top of the emulsifying tank (1), and a stirring shaft (3) being rotatably mounted on the emulsifying tank (1), characterized in that: A premixing box (4) symmetrically arranged and connected to the outside at the top is fixed in the emulsification tank (1), a premixing net cylinder (5) is fixed below the premixing box (4), a premixing cylinder (6) is fixed on the premixing net cylinder (5), a premixing cutting cylinder (7) disposed in the premixing cylinder (6) is rotatably matched on the outside of the premixing net cylinder (5), a conical boss (8) disposed in the premixing cylinder (6) is fixed at the lower end of the premixing net cylinder (5), a gap (9) is reserved between the conical boss (8) and the premixing cylinder (6), a plurality of premixing channels (10) uniformly distributed on the conical surface of the conical boss (8), a plurality of uniformly distributed premixing needles (11) are fixed in the premixing channels (10), a bottom plate (12) is slidably mounted on the lower end of the conical boss (8), and a premixing retaining ring (13) sliding in the gap (9) is fixed on the outer circumference of the bottom plate (12).

2. The vacuum homogenizing emulsifier for laboratory research and development according to claim 1, characterized in that: A rotating cutting wheel (14) is rotatably mounted in the premixing box (4), the stirring shaft (3) passes through the premixing box (4), and a rotating cutter (15) is fixed on the stirring shaft (3) placed in the premixing box (4).

3. The vacuum homogenizing emulsifier for laboratory research and development according to claim 2, characterized in that: The rotating cutting wheel (14) is coaxially connected to a driving disc (16), a short rod (17) is eccentrically rotatably mounted on the driving disc (16), the short rod (17) is rotatably connected to a long rod (18), one end of the long rod (18) is hinged with a pull rod (19), the end of the pull rod (19) is fixed with a pull column (20), the upper end of the premixing cutting cylinder (7) is rotatably mounted on the premixing cylinder (6) via a rotating ring (21), the upper end of the premixing cutting cylinder (7) is integrally extended through the premixing cylinder (6) and is fixed with a driving turntable (22) placed on the premixing cylinder (6), the driving turntable (22) is provided with an arc-shaped pulling arc groove (23), and the pulling column (20) is slidably placed in the pulling arc groove (23).

4. The vacuum homogenizing emulsifier for laboratory research and development according to claim 3, characterized in that: A boss bottom groove (24) is formed at the lower end of the conical boss (8), a cylindrical cam (25) is fixedly sleeved on the stirring shaft (3) in the boss bottom groove (24), an annular cam groove (26) is formed on the cylindrical cam (25), a boss slide groove (27) is formed on the bottom surface of the conical boss (25), a chassis slide rod (28) slidably placed in the boss slide groove (27) is fixed on the chassis (12), a slide rod (29) placed in the boss bottom groove (24) is fixed on the chassis (12), and a slide column (30) matched in the cam groove (26) is fixed on the end of the slide rod (29).

5. The vacuum homogenizing emulsifier for laboratory research and development according to claim 4, characterized in that: An inner spiral blade (31) and an outer spiral blade (32) are fixed to the lower end of the stirring shaft (3), the outer diameter of the inner spiral blade (31) gradually decreases from top to bottom, and the outer diameter of the outer spiral blade (32) gradually increases from top to bottom, and the inner spiral blade (31) and the outer spiral blade (32) are connected via a plurality of cross bars (33).

6. The vacuum homogenizing emulsifier for laboratory research and development according to claim 5, characterized in that: An emulsifying shaft (34) is rotatably mounted on the side of the stirring shaft (3), an emulsifying head is fixed at the lower end of the emulsifying shaft (34), the emulsifying head comprises a stator (35) fixed at the lower end of the emulsifying shaft (34), a rotor (36) is mounted on the outer side of the stator (35), and a shearing piece (37) is fixed at the lower end of the emulsifying shaft (34).

7. The vacuum homogenizing emulsifier for laboratory research and development according to claim 6, characterized in that: The emulsification tank (1) is provided with a heating interlayer (38), the heating interlayer (38) is provided with a heat inlet (39) and a heat outlet (40), the bottom of the heating interlayer (38) is connected to a circulation bottom pipe (41) arranged at the bottom of the emulsification tank (1), the interiors of the stirring shaft (3) and the emulsification shaft (34) are cavities, the bottom of the emulsification tank (1) is provided with a cooling interlayer (42), the cooling interlayer (42) is provided with a cold inlet (43) and a cold outlet, the circulation bottom pipe (41) is rotatably connected to the emulsification shaft (34), The end of the circulation bottom pipe (41) is rotatably connected to the stirring shaft (3) and the cooling interlayer (42) via a three-way pipe (44); the stirring shaft (3) and the upper end of the emulsifying shaft (34) are connected via a same pipe 1 (45); one end of the pipe 1 (45) is connected to a heating thermostat (46); the heating thermostat (46) is connected to a heat inlet (39) via a pipe 2 (47); the other end of the pipe 1 (45) is connected to a cooling thermostat (48); the cooling thermostat (48) is connected to a cold inlet (43) via a pipe 3 (49).

8. The vacuum homogenizing emulsifier for laboratory research and development according to claim 7, characterized in that: An inner shaft through-tube (50) is fixed inside the stirring shaft (3) and the emulsifying shaft (34); the outside of the inner shaft through-tube (50) is a cleaning chamber (51); the cleaning chamber (51) is provided with a plurality of evenly distributed spray heads (52); and an electromagnetic three-way valve (53) is installed at the lower end of the inner shaft through-tube (50).

9. The vacuum homogenizing emulsifier for laboratory research and development according to claim 8, characterized in that: The machine also comprises a frame (54), a driving shell (55) being slidably mounted on the frame (54) up and down, a stirring motor (56) being fixedly mounted on the upper end of the driving shell (55), the stirring motor (56) being fixedly connected to the stirring shaft (3), an emulsifying motor (57) being fixedly mounted on the driving shell (55), the emulsifying motor (57) being coaxially connected to a driving pulley, the driving pulley being connected to a driven pulley (58) via a belt, and the driven pulley (58) being connected to the emulsifying shaft (34).

10. The vacuum homogenizing emulsifier for laboratory research and development according to claim 9, characterized in that: A reduction motor (59) is fixed on the frame (54), the reduction motor (59) is connected to a lifting screw (60), the drive housing (55) is threadedly connected to the lifting screw (60), limiting rods (61) placed on the frame (54) are fixed on both sides of the lifting screw (60), and the drive housing (55) is slidably placed on the limiting rods (61).

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