Vacuum homogenizing emulsifying machine

Abstract

The invention discloses a vacuum homogenizing emulsifying machine, which can fully mix and stir a water-phase raw material, an oil-phase raw material and the like under the action of an emulsifying agent and complete the emulsifying process, has the capability of eliminating bubbles in the raw materials and finished products and the capability of automatically separating impurities in the raw materials in the working process, and can effectively improve the production efficiency on the premise of avoiding demulsification. The emulsification efficiency can be effectively improved. The main structure of the device comprises an emulsifying pot with an opening in the upper end, a pot cover, a vacuum tube, a main shaft arranged on the pot cover, a stirring structure arranged on the main shaft, and a stirring motor, a reverse retention cylinder is arranged in the emulsifying pot, a liquid return loop is formed between the reverse retention cylinder and the inner side wall of the emulsifying pot, and a plurality of reverse cylinder connecting rods are arranged on the inner side wall of the emulsifying pot. The reverse retention cylinder comprises a reverse upper cylinder and a reverse lower cylinder, the inner diameter of the reverse upper cylinder is gradually reduced from top to bottom, the inner diameter of the reverse lower cylinder is gradually increased from top to bottom, and the stirring structure comprises a plurality of stirring rods which are arranged on the main shaft and located in the reverse retention cylinder.

Description

Technical Field

[0001] The present invention belongs to the technical fields of medical equipment and emulsifying devices, and particularly relates to a vacuum homogenizing emulsifier. Background Art

[0002] Emulsification is a phenomenon in which a liquid is uniformly dispersed in another immiscible liquid in the form of extremely tiny droplets. Emulsification is a liquid-liquid interface phenomenon. For two immiscible liquids, such as oil and water, they are divided into two layers in a container. The oil with a smaller density is on the upper layer, and the water with a larger density is on the lower layer. If an appropriate surfactant is added and under strong stirring, the oil is dispersed in the water to form an emulsion, and this process is called emulsification. In the medical field, a vacuum homogenizing emulsifier is often used to produce products. The vacuum homogenizing emulsifier is a complete set of systems integrating functions of mixing, dispersing, homogenizing, emulsifying, and powder absorption, and can also be used in combination with peripheral oil and water phase tanks, and vacuum, heating / cooling systems, etc. Summary of the Invention

[0003] The present invention provides a vacuum homogenizing emulsifier, which overcomes the drawback that the upper oil phase raw materials and the lower water phase raw materials in a conventional emulsifying pot rotate and rise together, but the overall contact range of different raw materials is limited, resulting in insufficient emulsification efficiency. A reverse retention cylinder is provided. Thus, when stirring, a large amount of upper oil phase liquid in the reverse retention cylinder rotates and rises along the inner side wall of the reverse retention cylinder and enters the liquid return annular channel. The amount of liquid rotating and rising in the liquid return annular channel is less, so that most of the oil phase liquid in the liquid return annular channel can flow out from the lower end of the liquid return annular channel, and these flowing out oil phase liquids can directly come into large-range contact with the water phase raw materials at the relatively lower position, be stirred and emulsified together, effectively improving the overall emulsification efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A vacuum homogenizing emulsifier includes an emulsifying pot with an open upper end, a pot cover for closing the opening of the emulsifying pot, a vacuum tube for evacuating the inside of the emulsifying pot, and a servo electric cylinder for driving the pot cover to lift and lower; A main shaft passing through the pot cover and rotatably and sealingly fitted with the pot cover is provided on the pot cover. A stirring structure located inside the emulsifying pot is provided on the main shaft, and a stirring motor for driving the main shaft and provided outside the emulsifying pot is also included; A reverse retention cylinder is provided inside the emulsifying pot. A liquid return annular channel is formed between the reverse retention cylinder and the inner side wall of the emulsifying pot. A plurality of anti-cylinder connecting rods connecting the reverse retention cylinder are provided on the inner side wall of the emulsifying pot. The reverse retention cylinder includes an upward reverse cylinder and a downward reverse cylinder. The inner diameter of the upward reverse cylinder gradually decreases from top to bottom, the distance between the outer side wall of the upward reverse cylinder and the inner side wall of the emulsifying pot gradually increases from top to bottom, the inner diameter of the downward reverse cylinder gradually increases from top to bottom, and the distance between the outer side wall of the downward reverse cylinder and the inner side wall of the emulsifying pot gradually decreases from top to bottom; The stirring structure includes a plurality of stirring rods which are arranged on the main shaft and located in the reverse retention cylinder.

[0005] Preferably, the emulsifying pot is provided with a baffle ring structure which can seal the lower end of the liquid return loop, the baffle ring structure includes a liquid return baffle plate located below the liquid return loop, and a plurality of liquid return connecting rods connected to the liquid return baffle plate are provided on the inner side wall of the emulsifying pot. When the pot cover closes the opening of the emulsifying pot, a liquid return gap is provided between the liquid return baffle plate and the lower end of the liquid return loop.

[0006] Preferably, the baffle ring structure also includes a wall-attached baffle ring coaxially arranged with the liquid return baffle ring, and the outer wall of the wall-attached baffle ring is in contact with the inner wall of the emulsifying pot. When the top surface of the liquid return baffle ring plate is in contact with the bottom surface of the reverse lower cylinder: the top surface of the liquid return baffle ring plate is in contact with the bottom surface of the wall-attached baffle ring, and the lower end of the liquid return channel is sealed by the baffle ring structure.

[0007] Preferably, a forward retention cylinder is provided in the emulsification pot, the forward retention cylinder comprises a forward upward cylinder and a forward downward cylinder, the outer wall of the forward upward cylinder is fitted with the inner wall of the emulsification pot, the inner diameter of the forward upward cylinder gradually increases from top to bottom, the outer wall of the forward downward cylinder is fitted with the inner wall of the emulsification pot, the inner diameter of the forward downward cylinder gradually decreases from top to bottom, the bottom of the forward downward cylinder is fitted with the inner bottom of the emulsification pot, and the stirring structure comprises a plurality of stirring rods arranged on the main shaft and located in the forward retention cylinder.

[0008] Preferably, an adaptive isolation cylinder is provided in the forward downward cylinder, and the stirring rod located in the forward retention cylinder is also located in the adaptive isolation cylinder. A sleeve located in the adaptive isolation cylinder is provided on the outer sleeve of the main shaft, and the sleeve and the main shaft are slidably matched, and the sleeve and the main shaft are rotatably matched. Two spiral bevel grooves extending along the circumference of the sleeve are provided on the side wall of the sleeve, and the two spiral bevel grooves are symmetrically arranged along the center of the sleeve axis. Two sliding columns corresponding to the spiral bevel grooves are provided on the main shaft, and the sliding columns are slidably matched with the corresponding spiral bevel grooves. A plurality of isolation cylinder connecting rods connected to the adaptive isolation cylinder are provided on the sleeve; When the slide column slides to the lowest point of the chute: the space between the adaptive isolation cylinder and the bottom of the emulsification pot is the discharge gap; When the bottom of the adaptive isolation tube contacts the bottom of the emulsification pot: the sliding column is in the middle of the spiral chute, and the bottom of the adaptive isolation tube and the bottom of the emulsification pot are sealed.

[0009] Preferably, a plurality of stirring plates are provided at the lower part of the side wall of the main shaft, the stirring plates are perpendicular to the bottom of the emulsifying pot, the stirring plates are evenly distributed along the circumference of the main shaft, and the bottom of the emulsifying pot is provided with a first trough opening to the bottom surface of the emulsifying pot, the bottom surface of the stirring plate is in the first trough, and there is a gap between the bottom surface of the stirring plate and the bottom of the first trough.

[0010] Preferably, the bottom of the emulsification pot is provided with a second sink groove opening at the bottom of the first sink groove, and when the bottom of the adaptive isolation cylinder contacts the bottom of the emulsification pot, there is a gap between the notch of the second sink groove and the bottom of the main shaft.

[0011] Preferably, the main shaft includes an upper shaft section, a jet flat cylinder with both ends closed, and a lower extension pipe arranged in sequence from top to bottom. The upper end of the lower extension pipe is communicated with the inside of the jet flat cylinder. A number of drainage impellers relatively fixed to the lower extension pipe are arranged in the lower extension pipe. A number of jet mixing holes are arranged on the circumferential side wall of the jet flat cylinder, and the jetting direction of the jet mixing holes faces the inner side wall of the upper cylinder in the opposite direction.

[0012] Preferably, the pot cover includes an outer ring cover and an inner round cover that can be tightly fitted with the outer ring cover. A middle cover hole is arranged on the outer ring cover. When the inner round cover is tightly fitted with the outer ring cover: the inner round cover seals the middle cover hole, and a seal is formed between the inner round cover and the middle cover hole; The main shaft passes through the inner round cover and is rotationally and sealingly fitted with the inner round cover. The servo electric cylinder is used to drive the inner round cover, the main shaft, and the stirring motor to rise and fall together. An outer lifting cylinder for driving the outer ring cover to rise and fall is also included.

[0013] The beneficial effects of the present invention are as follows: It overcomes the defect that in a conventional emulsifying pot, the upper oil-phase raw materials and the lower water-phase raw materials rotate and rise together, but the overall contact range of different raw materials is limited, resulting in insufficient emulsification efficiency. A reverse retention cylinder is provided. Thus, when stirring, a large amount of upper oil-phase liquid in the reverse retention cylinder rotates and rises along the inner side wall of the reverse retention cylinder and enters the liquid return annular channel. The amount of liquid rotating and rising in the liquid return annular channel is less, so that most of the oil-phase liquid in the liquid return annular channel can flow out from the lower end of the liquid return annular channel. These flowing-out oil-phase liquids can directly come into large-range contact with the water-phase raw materials located relatively below, be stirred and emulsified together, effectively improving the overall emulsification efficiency; during the working process, it has the ability to eliminate bubbles in the raw materials and the finished product; it has the ability to automatically separate impurities in the raw materials. The function of separating impurities includes both the separation and isolation of light impurities and the separation and isolation of heavy impurities. The overall separation effect is good and the efficiency is high. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of a part of the structure of the present invention; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a sectional view of the present invention; Figure 5 is Figure 4 an enlarged view of part B in Figure 6 is Figure 4 an enlarged view of part C in

[0015] Reference numerals: emulsifying pot 1, first settling tank 1a, second settling tank 1b, pot cover 2, outer ring cover 201, inner circular cover 202, vacuum tube 21, main shaft 3, upper shaft section 301, jet flat tube 302, jet mixing holes 302a, lower extension tube 303, sleeve 3.1, spiral inclined groove 3.1a, sliding column 3.2, reverse retention cylinder 4, liquid return annular channel 4a, upward reverse cylinder 401, downward reverse cylinder 402, annular inner converging area 403, reverse cylinder connecting rod 4.1, stirring rod 501, stirring plate 502, liquid return baffle ring plate 601, liquid return connecting rod 601.1, wall-attached baffle ring 602, forward retention cylinder 7, upward forward cylinder 701, downward forward cylinder 702, annular outer converging area 703, adaptive isolation cylinder 8, isolation cylinder connecting rod 8.1. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0017] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 shown, A vacuum homogenizing emulsifier includes an emulsifying pot 1 with an open upper end, a pot cover 2 for closing the opening of the emulsifying pot 1, a vacuum tube 21 for evacuating the inside of the emulsifying pot 1, and a servo electric cylinder for driving the lifting of the pot cover 2; A main shaft 3 passing through the pot cover 2 and rotatably and sealingly cooperating with the pot cover 2 is provided on the pot cover 2. A stirring structure located inside the emulsifying pot 1 is provided on the main shaft 3, and a stirring motor for driving the main shaft 3 is further provided outside the emulsifying pot 1; A reverse retention cylinder 4 is provided inside the emulsifying pot 1. A liquid return annular channel 4a is formed between the reverse retention cylinder 4 and the inner side wall of the emulsifying pot 1. A number of reverse cylinder connecting rods 4.1 connected to the reverse retention cylinder 4 are provided on the inner side wall of the emulsifying pot 1. The reverse retention cylinder 4 includes an upward reverse cylinder 401 and a downward reverse cylinder 402. The inner diameter of the upward reverse cylinder 401 gradually decreases from top to bottom, and the distance between the outer side wall of the upward reverse cylinder 401 and the inner side wall of the emulsifying pot 1 gradually increases from top to bottom. The inner diameter of the downward reverse cylinder 402 gradually increases from top to bottom, and the distance between the outer side wall of the downward reverse cylinder 402 and the inner side wall of the emulsifying pot 1 gradually decreases from top to bottom; The stirring structure includes a plurality of stirring rods 501 provided on the main shaft 3 and located inside the reverse retention cylinder 4.

[0018] The inner wall of the emulsifying pot 1 is in the shape of a bottomless cylinder. The maximum distance between the reverse retention cylinder 4 and the inner wall of the emulsifying pot 1 is M, and the minimum distance between the reverse retention cylinder 4 and the main shaft 3 is L, where L > 3M. The outer end of the vacuum tube 21 is connected to a vacuum pumping device, and the inner end of the vacuum tube 21 communicates with the inside of the emulsifying pot 1 (the inner end of the vacuum tube 21 does not contact the raw materials, emulsifiers, and emulsions inside the emulsifying pot 1). In this solution, the vacuum tube 21 is arranged on the pot lid 2, and the vacuum tube 21 is connected to the vacuum pumping device through a deformable pipe fitting such as a metal bellows or a plastic hose. Inside the liquid return loop 4a: The area near the connection between the upper reverse cylinder 401 and the lower reverse cylinder 402 is the annular inward contraction area 403. The reverse cylinder connecting rod 4.1 also functions as a stirring structure.

[0019] The servo electric cylinder drives the pot lid 2 to rise. After the operator adds liquid raw materials and emulsifiers into the emulsifying pot 1, the servo electric cylinder drives the pot lid 2 to descend and close the opening of the emulsifying pot 1. At this time, the liquid level is lower than the upper end of the reverse retention cylinder 4 and higher than the lower end of the reverse retention cylinder 4.

[0020] Start the stirring motor to drive the main shaft 3 and the stirring structure to stir the liquid raw materials in the emulsifying pot 1, and gradually start to form an emulsion until all emulsification is completed. During this process, use the vacuum pumping device and the vacuum tube 21 to keep the inside of the emulsion in a negative pressure state (this negative pressure state will not cause the liquid raw materials, etc. to enter the vacuum tube 21), so that the bubbles near the top of the liquid level can be eliminated (the bubbles near the top of the liquid level will burst, and the air inside will be discharged above the liquid level). Then the pot lid 2 can be raised again, and the produced emulsion can be pumped out by pumping, or a valve can be set on the emulsifying pot 1 to let the produced emulsion flow out through the valve. After being used a certain number of times, the inside of the emulsifying pot 1 can be cleaned with a cleaning liquid.

[0021] In a conventional emulsifying pan 1, during the stirring and emulsifying process, the liquid in the emulsifying pan 1 will rotate. The liquid level near the side wall of the emulsifying pan 1 will rise, while the liquid level at the center will drop ("higher at the edge and lower in the middle"), that is, in a vortex shape. Different from the conventional emulsifying pan 1, in the present invention, there is a relatively edge - located reverse retention cylinder 4. After the stirring starts, the main flow direction of the liquid is still to rotate and be "higher at the edge and lower in the middle". However, the difference is that the reverse retention cylinder 4 will temporarily separate a part of the liquid. At the beginning, a large amount of liquid will rise while rotating along the inner side wall of the reverse retention cylinder 4, and a small amount of liquid will rise while rotating along the liquid return channel 4a (L > 3M). After the liquid rises above the top of the reverse retention cylinder 4, since the amount of liquid coming from the inside of the reverse retention cylinder 4 is significantly greater than the amount of liquid coming from the liquid return channel 4a, naturally, the main liquid flow direction at the reverse retention cylinder 4 is that "the liquid rises while rotating along the inner side wall of the reverse retention cylinder 4, and after a part of the liquid crosses the top of the reverse retention cylinder 4, it either directly enters the liquid return channel 4a or first reaches near the inner side wall of the emulsifying pan 1 (the part above the reverse retention cylinder 4), and then enters the liquid return channel 4a under the action of gravity". Thus, in the subsequent whole process, most of the liquid flow direction in the liquid return channel 4a is "flow out from the lower end of the liquid return channel 4a". It should be emphasized here that the overall flow direction of the liquid in the liquid return channel 4a is not simply downward movement, and there is still rotation (rotating along the inner side wall of the emulsifying pan 1).

[0022] It should be emphasized that regardless of the stirring rate, as long as L is much larger than M, the purpose that most of the liquid in the liquid return channel 4a flows out from the lower end of the liquid return channel 4a can always be achieved.

[0023] Taking the mixing and emulsifying of an aqueous phase raw material and an oil phase raw material (and the density of the aqueous phase raw material is greater than that of the oil phase raw material) as an example (this example is also used in the following text), before the stirring starts, the aqueous phase raw material is at the relatively lower position, and the oil phase raw material is at the relatively upper position. After the stirring starts, the aqueous phase raw material will rise while rotating, and a part of the aqueous phase raw material will come into contact with a part of the oil phase raw material. Under the action of the emulsifier and the stirring structure, emulsification is achieved. However, generally speaking, the trend of "aqueous phase below and oil phase above" remains unchanged. In view of this, a reverse retention cylinder 4 is set so that a part of the oil phase raw material can cross the top of the reverse retention cylinder 4 from above and enter the liquid return channel 4a. Then, most of the oil phase raw material in the liquid return channel 4a flows out from the space between the side wall of the emulsifying pan 1 and the lower end of the reverse retention cylinder 4, directly contacting the aqueous phase raw material that is rising while rotating below, thereby significantly improving the contact efficiency between the aqueous phase raw material and the oil phase raw material. Cooperating with the work of the stirring structure, the emulsification efficiency can be improved.

[0024] Note: The stirring speed of the stirring structure is not the faster the better, because the violent shear force will cause the emulsion droplets to break, resulting in oil-water separation, that is, demulsification. Therefore, the rotation speed of the main shaft 3 (stirring structure) is limited (the specific amount can be obtained based on actual conditions). Then, under the premise that the stirring speed has an upper limit (under the premise of avoiding demulsification), the reverse retention cylinder 4 is used to accelerate the contact and mixing efficiency of the oil phase raw material and the water phase raw material, which also has the effect of improving the emulsification efficiency.

[0025] In addition, in many cases, impurities are inevitably present in the emulsion. In some cases, impurities are removed before emulsification, and in some cases, impurities are removed after emulsification. Naturally, in some cases, impurities can also or need to be removed during emulsification. In the present invention, for light impurities (impurities that eventually float above the liquid surface in a static state can be called light impurities, and impurities that eventually sink to the bottom of the emulsion in a static state can be called heavy impurities), when stirring begins, a large amount of light impurities will enter the liquid return loop 4a from above along with the liquid over the top of the reverse retention cylinder 4. In the process of rotating with the liquid in the liquid return loop 4a: due to the action of centrifugal force, the light impurities will move to the annular inner retraction area 403, and the liquid will lean against the side wall of the emulsification pot 1. Due to the presence of the reverse lower cylinder 402, it is difficult for the liquid to continue to carry away the light impurities downward, that is, the annular inner retraction area 403 will intercept the light impurities. In this way, as the stirring process continues, the light impurities will gather in the annular inner retraction area 403. The presence of impurities will affect the emulsification efficiency (impurities are stirred together and affect the emulsion generation efficiency). In the present invention, during the emulsification process, light impurities will be continuously separated from the main stirring area as quickly as possible (the stirring structure is not in the liquid return loop 4a), thereby improving the emulsification efficiency.

[0026] The emulsifying pot 1 is provided with a baffle ring structure which can seal the lower end of the liquid return channel 4a. The baffle ring structure includes a liquid return baffle plate 601 located below the liquid return channel 4a. The inner wall of the emulsifying pot 1 is provided with a plurality of liquid return connecting rods 601.1 connected to the liquid return baffle plate 601. When the pot cover 2 closes the opening of the emulsifying pot 1, a liquid return gap is provided between the liquid return baffle plate 601 and the lower end of the liquid return channel 4a.

[0027] The liquid return connecting rod 601.1 also serves as a stirring structure.

[0028] After the liquid return baffle ring plate 601 is provided, it becomes more difficult for the liquid to enter the liquid return annular channel 4a from below, which can strengthen the tendency of "the liquid leaving the liquid return annular channel 4a from below the liquid return annular channel 4a". After all emulsification is completed, the liquid level is between the upper end and the lower end of the reverse retention cylinder 4, and the light impurities remain at the top of the liquid level in the liquid return annular channel 4a. The servo electric cylinder drives the pot cover 2, the main shaft 3, the stirring motor, etc. to rise together, and the liquid return baffle ring plate 601 also rises to a position where it seals the lower end of the liquid return annular channel 4a. In this way, the emulsion that has been produced can be quickly extracted from the emulsifying pot 1 directly with a liquid extraction pipe (a small amount of emulsion with light impurities remains in the liquid return annular channel 4a. If it does not affect the next emulsification, it can continue to be used. After being used a certain number of times, it can be cleaned. If it affects the next emulsification, then it is directly cleaned). Before extracting the emulsion that has been produced from the emulsifying pot 1 with a liquid extraction pipe, it is advisable to let the emulsion stand for a while so that the heavy impurities sink to the bottom first. The liquid extraction position of the liquid extraction pipe should be at a certain distance from the inner bottom of the emulsifying pot 1, and the liquid extraction position of the liquid extraction pipe cannot be in the liquid return annular channel 4a.

[0029] The baffle ring structure further includes a wall-attached baffle ring 602 arranged coaxially with the liquid return baffle ring. The outer side wall of the wall-attached baffle ring 602 fits the inner side wall of the emulsifying pot 1. When the top surface of the liquid return baffle ring plate 601 is in contact with the bottom surface of the reverse lower cylinder 402: the top surface of the liquid return baffle ring plate 601 is in contact with the bottom surface of the wall-attached baffle ring 602, and the lower end of the liquid return annular channel 4a is sealed by the baffle ring structure.

[0030] With the wall-attached baffle ring 602, the liquid return baffle ring plate 601 does not have to be in contact with the inner side wall of the emulsifying pot 1. In this way, during the emulsification process, there will be no mutual abrasion between the liquid return baffle ring plate 601 and the inner side wall of the emulsifying pot 1, which can greatly extend the service life of the liquid return baffle ring plate 601 and avoid the wear of the inner side wall of the emulsifying pot 1.

[0031] A forward retention cylinder 7 is provided in the emulsifying pot 1. The forward retention cylinder 7 includes an upper forward cylinder 701 and a lower forward cylinder 702. The outer side wall of the upper forward cylinder 701 fits the inner side wall of the emulsifying pot 1. The inner diameter of the upper forward cylinder 701 gradually increases from top to bottom. The outer side wall of the lower forward cylinder 702 fits the inner side wall of the emulsifying pot 1. The inner diameter of the lower forward cylinder 702 gradually decreases from top to bottom. The bottom of the lower forward cylinder 702 fits the inner bottom of the emulsifying pot 1. The stirring structure includes a plurality of stirring rods 501 provided on the main shaft 3 and located in the forward retention cylinder 7.

[0032] The forward retention cylinder 7 is relatively fixed to the emulsifying pot 1. In the emulsifying pot 1, the area near the connection between the upper forward cylinder 701 and the lower forward cylinder 702 is an annular outer contraction area 703. The stirring structure further includes a plurality of stirring rods 501 located between the forward retention cylinder 7 and the reverse retention cylinder 4 and fixed to the main shaft 3.

[0033] As mentioned above, the presence of impurities will affect the emulsification efficiency. In the present invention, during the emulsification process, the heavy impurities at the bottom will rise along the wall with the liquid. Due to the action of centrifugal force, the heavy impurities will move towards the annular outer receiving area 703. Due to the existence of the positive upward cylinder 701, it is difficult for the liquid to continue to carry the heavy impurities upwards, that is, the annular outer receiving area 703 will intercept the heavy impurities. In this way, as the stirring process progresses, the heavy impurities will accumulate in the annular outer receiving area 703, thereby improving the emulsification efficiency.

[0034] An adaptive isolation cylinder 8 is provided in the positive downward cylinder 702. The stirring rod 501 located in the positive retention cylinder 7 is also located in the adaptive isolation cylinder 8. A sleeve 3.1 located in the adaptive isolation cylinder 8 is sleeved outside the main shaft 3. The sleeve 3.1 is slidably matched with the main shaft 3 and rotatably matched with the main shaft 3. Two spiral inclined grooves 3.1a extending along the circumferential direction of the sleeve 3.1 are provided on the side wall of the sleeve 3.1. The two spiral inclined grooves 3.1a are symmetrically arranged about the axis center of the sleeve 3.1. Two sliding columns 3.2 corresponding to the spiral inclined grooves 3.1a one by one are provided on the main shaft 3. The sliding columns 3.2 are slidably matched with the corresponding spiral inclined grooves 3.1a. A number of isolation cylinder connecting rods 8.1 connecting the adaptive isolation cylinder 8 are provided on the sleeve 3.1; When the sliding column 3.2 slides to the lowest point of the spiral inclined groove 3.1a: the space between the adaptive isolation cylinder 8 and the bottom of the emulsifying pot 1 is the discharge gap; When the bottom of the adaptive isolation cylinder 8 contacts the bottom of the emulsifying pot 1: the sliding column 3.2 is in the middle of the spiral inclined groove 3.1a, and the bottom of the adaptive isolation cylinder 8 is sealed with the bottom of the emulsifying pot 1.

[0035] The isolation cylinder connecting rod 8.1 also functions as a stirring structure.

[0036] Normally, due to the action of gravity, the bottom of the adaptive isolation cylinder 8 contacts the bottom of the emulsifying pot 1. During the working process, the sliding column 3.2 will move relative to the sleeve 3.1 (actually, the sleeve 3.1 rotates and slides), and the sliding column 3.2 will slide to the lowest point of the spiral inclined groove 3.1a (the sleeve 3.1 rises during this process) and remain in this position. The adaptive isolation cylinder 8 will rotate with the main shaft 3. After complete emulsification, as the rotational speed of the main shaft 3 decreases, at a certain moment, the sliding column 3.2 will slide upward along the spiral inclined groove 3.1a, that is, the sleeve 3.1 will move downward in a spiral until the bottom of the adaptive isolation cylinder 8 contacts the bottom of the emulsifying pot 1. In this way, the heavy impurities accumulated in the annular outer collection area 703 will sink to the bottom between the adaptive isolation cylinder 8 and the positive retention cylinder 7. After that, the produced emulsion can be quickly extracted from the emulsifying pot 1 directly with a liquid extraction pipe. (A small amount of emulsion with heavy impurities finally remains between the adaptive isolation cylinder 8 and the positive retention cylinder 7. If it does not affect the next emulsification, it can continue to be used. After being used a certain number of times, it can be cleaned. If it affects the next emulsification, then it is directly cleaned.) Before extracting the produced emulsion from the emulsifying pot 1 with a liquid extraction pipe, there is no need to pre - stand the emulsion for a while. It can be directly extracted, and the liquid extraction position of the liquid extraction pipe should be inside the adaptive isolation cylinder 8.

[0037] A plurality of stirring plates 502 are provided on the lower part of the side wall of the main shaft 3. The stirring plates 502 are perpendicular to the bottom of the emulsifying pot 1. Each stirring plate 502 is evenly distributed along the circumferential direction of the main shaft 3. A first sinking groove 1a opening to the inner bottom surface of the emulsifying pot 1 is provided at the bottom of the emulsifying pot 1. The bottom surface of the stirring plate 502 is located in the first sinking groove 1a, and there is a gap between the bottom surface of the stirring plate 502 and the bottom of the first sinking groove 1a.

[0038] In the initial stage, the heavy impurities are always at the relatively bottom part, and the stirring plates 502 are also arranged at the bottom - close position, so that the bottom liquid raw materials can drive the heavy impurities to quickly and massively adhere to the wall, thereby making full use of the positive retention cylinder 7 to quickly intercept the heavy impurities and improving the overall emulsification efficiency.

[0039] The main shaft 3 includes an upper shaft section 301, a jet flat cylinder 302 with both ends closed, and a lower extension pipe 303 arranged in sequence from top to bottom. The upper end of the lower extension pipe 303 is internally communicated with the jet flat cylinder 302. A number of drainage impellers relatively fixed to the lower extension pipe 303 are provided in the lower extension pipe 303. A number of jet mixing holes 302a are provided on the circumferential side wall of the jet flat cylinder 302, and the jet direction of the jet mixing holes 302a faces the inner side wall of the reverse upper cylinder 401.

[0040] When the main shaft 3 rotates, due to the presence of each drainage impeller, a part of the lower-layer liquid can be quickly pumped into the lower extension pipe 303 and the jet flat cylinder 302, and ejected through the jet mixing holes 302a, greatly accelerating the contact and fusion efficiency of the aqueous raw material and the oil-phase raw material, and significantly improving the emulsification efficiency. In addition, bubbles are wrapped by liquid, and it is not so easy for some of the lower-layer bubbles to quickly reach the upper layer. In this solution, the lower-layer liquid together with the bubbles can be pumped upward and sprayed to the relatively upper part, so as to use the vacuum pipe 21 to quickly extract the excess air, achieving the effect of quickly defoaming.

[0041] A second sink 1b is provided at the bottom of the emulsifying pot 1, opening at the bottom of the first sink 1a. When the bottom of the adaptive isolation cylinder 8 contacts the bottom of the emulsifying pot 1, there is a gap between the opening of the second sink 1b and the bottom of the main shaft 3.

[0042] There is no mutual wear between the main shaft 3 and the bottom of the emulsifying pot 1. Before the start of rotation, the lower end of the lower extension pipe 303 is not closed (there is a gap between the opening of the second sink 1b and the bottom of the main shaft 3), and the liquid can be smoothly sucked in.

[0043] The pot cover 2 includes an outer ring cover 201 and an inner circular cover 202 that can be tightly fitted with the outer ring cover 201. The outer ring cover 201 is provided with a cover middle hole. When the inner circular cover 202 is tightly fitted with the outer ring cover 201: the inner circular cover 202 seals the cover middle hole, and there is a seal between the inner circular cover 202 and the cover middle hole; The main shaft 3 passes through the inner circular cover 202 and is rotationally and sealingly fitted with the inner circular cover 202. The servo electric cylinder is used to drive the inner circular cover 202, the main shaft 3 and the stirring motor to lift and lower together, and an outer lifting cylinder for driving the outer ring cover 201 to lift and lower is also included.

[0044] Originally, the main shaft 3 had to lift and lower relative to a lid and rotate and seal with the lid at the same time, and it was not easy to ensure the sealing performance. In this solution, only a rotational sealing fit is required between the main shaft 3 and the inner circular cover 202, and the sealing performance is easy to ensure, while the lifting and lowering are realized by the relative lifting and lowering between the inner circular cover 202 and the outer ring cover 201.

[0045] The embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A vacuum homogenizing emulsifier, comprising an emulsifying pot with an open upper end, a pot cover for closing the opening of the emulsifying pot, a vacuum tube for evacuating the inside of the emulsifying pot, and a servo electric cylinder for driving the lifting of the pot cover; characterized in that, a main shaft passing through the pot cover and rotatably and sealingly fitted with the pot cover is provided on the pot cover, a stirring structure located inside the emulsifying pot is provided on the main shaft, and a stirring motor for driving the main shaft is further provided outside the emulsifying pot; a reverse retention cylinder is provided inside the emulsifying pot, a return liquid annular channel is formed between the reverse retention cylinder and the inner side wall of the emulsifying pot, a number of anti-cylinder connecting rods connected to the reverse retention cylinder are provided on the inner side wall of the emulsifying pot, the reverse retention cylinder includes an upward reverse cylinder and a downward reverse cylinder, the inner diameter of the upward reverse cylinder gradually decreases from top to bottom, the distance between the outer side wall of the upward reverse cylinder and the inner side wall of the emulsifying pot gradually increases from top to bottom, the inner diameter of the downward reverse cylinder gradually increases from top to bottom, and the distance between the outer side wall of the downward reverse cylinder and the inner side wall of the emulsifying pot gradually decreases from top to bottom; the stirring structure includes a plurality of stirring rods provided on the main shaft and located inside the reverse retention cylinder.

2. The vacuum homogenizing emulsifier according to claim 1, characterized in that, a retaining ring structure for sealing the lower end of the return liquid annular channel is provided inside the emulsifying pot, the retaining ring structure includes a return liquid retaining ring plate located below the return liquid annular channel, and a number of return liquid connecting rods connected to the return liquid retaining ring plate are provided on the inner side wall of the emulsifying pot. When the pot cover closes the opening of the emulsifying pot: there is a return liquid gap between the return liquid retaining ring plate and the lower end of the return liquid annular channel.

3. The vacuum homogenizing emulsifier according to claim 2, characterized in that, the retaining ring structure further includes a wall-attached retaining ring circle coaxially arranged with the return liquid retaining ring. The outer side wall of the wall-attached retaining ring circle fits with the inner side wall of the emulsifying pot. When the top surface of the return liquid retaining ring plate is in contact with the bottom surface of the downward reverse cylinder: the top surface of the return liquid retaining ring plate is in contact with the bottom surface of the wall-attached retaining ring circle, and the lower end of the return liquid annular channel is sealed by the retaining ring structure.

4. A vacuum homogenizing emulsifier according to claim 1 or 2 or 3, characterized in that, a forward retention cylinder is provided inside the emulsifying pot. The forward retention cylinder includes an upward forward cylinder and a downward forward cylinder. The outer side wall of the upward forward cylinder fits with the inner side wall of the emulsifying pot. The inner diameter of the upward forward cylinder gradually increases from top to bottom. The outer side wall of the downward forward cylinder fits with the inner side wall of the emulsifying pot. The inner diameter of the downward forward cylinder gradually decreases from top to bottom. The bottom of the downward forward cylinder fits with the inner bottom of the emulsifying pot. The stirring structure includes a plurality of stirring rods provided on the main shaft and located inside the forward retention cylinder.

5. A vacuum homogenizing emulsifier according to claim 4, characterized in that, an adaptive isolation cylinder is provided inside the downward forward cylinder. The stirring rods located inside the forward retention cylinder are also located inside the adaptive isolation cylinder. A sleeve is sleeved outside the main shaft and is located inside the adaptive isolation cylinder. The sleeve is slidably and rotatably fitted with the main shaft. Two spiral inclined grooves extending along the circumferential direction of the sleeve are provided on the side wall of the sleeve. The two spiral inclined grooves are symmetrically arranged about the axis of the sleeve. Two sliding columns corresponding to the spiral inclined grooves one by one are provided on the main shaft. The sliding columns are slidably fitted with the corresponding spiral inclined grooves. A number of isolation cylinder connecting rods connecting the adaptive isolation cylinder are provided on the sleeve; when the sliding column slides to the lowest point of the inclined groove: the space between the adaptive isolation cylinder and the bottom of the emulsifying pot is the discharge gap; when the bottom of the adaptive isolation cylinder contacts the bottom of the emulsifying pot: the sliding column is at the middle of the spiral inclined groove, and the bottom of the adaptive isolation cylinder is sealed with the bottom of the emulsifying pot.

6. A vacuum homogenizing emulsifier according to claim 4, characterized in that, A number of stirring plates are provided at the lower part of the side wall of the main shaft. The stirring plates are perpendicular to the bottom of the emulsifying pot, and the stirring plates are evenly distributed along the circumferential direction of the main shaft. A first sink is provided at the bottom of the emulsifying pot, opening to the inner bottom surface of the emulsifying pot. The bottom surface of the stirring plate is located in the first sink, and there is a gap between the bottom surface of the stirring plate and the bottom of the first sink.

7. A vacuum homogenizing emulsifier according to claim 6, characterized in that, A second sink is provided at the bottom of the first sink at the bottom of the emulsifying pot. When the bottom of the adaptive isolation cylinder contacts the bottom of the emulsifying pot, there is a gap between the opening of the second sink and the bottom of the main shaft.

8. A vacuum homogenizing emulsifier according to claim 1 or 2 or 3, characterized in that, The main shaft includes an upper shaft section, a jet flat cylinder with both ends closed, and a lower extension pipe arranged in sequence from top to bottom. The upper end of the lower extension pipe is communicated with the inside of the jet flat cylinder. A number of drainage impellers relatively fixed to the lower extension pipe are provided in the lower extension pipe. A number of jet mixing holes are provided on the circumferential side wall of the jet flat cylinder, and the jet direction of the jet mixing holes faces the inner side wall of the reverse upper cylinder.

9. The vacuum homogenizing emulsifier according to claim 7, characterized in that, The main shaft includes an upper shaft section, a jet flat cylinder with both ends closed, and a lower extension pipe arranged in sequence from top to bottom. The upper end of the lower extension pipe is communicated with the inside of the jet flat cylinder. A number of drainage impellers relatively fixed to the lower extension pipe are provided in the lower extension pipe. A number of jet mixing holes are provided on the circumferential side wall of the jet flat cylinder, and the jet direction of the jet mixing holes faces the inner side wall of the reverse upper cylinder.

10. A vacuum homogenizing emulsifier according to claim 1 or 2 or 3, characterized in that, The pot cover includes an outer ring cover and an inner circular cover that can be tightly fitted with the outer ring cover. A cover middle hole is provided on the outer ring cover. When the inner circular cover is tightly fitted with the outer ring cover: the inner circular cover seals the cover middle hole, and there is a seal between the inner circular cover and the cover middle hole; The main shaft passes through the inner circular cover and is rotationally and sealingly fitted with the inner circular cover. The servo electric cylinder is used to drive the inner circular cover, the main shaft, and the stirring motor to lift and lower together. An outer lifting cylinder for driving the outer ring cover to lift and lower is also included.

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