A drip tray assembly for preparing microcapsules

Abstract

The present invention discloses a drip tray assembly for preparing microcapsules, and relates to the technical field of microcapsule manufacturing. The present invention comprises a cylinder; the two ends of the cylinder are respectively connected with an upper end cover and a lower end cover; the interior of the cylinder is divided into a first liquid chamber, a second liquid chamber and a continuous phase body chamber by an upper partition and a lower partition; the lower end cover is connected with a plurality of injection tubes; the upper partition and the lower partition are fixed with a continuous phase injection tube; the lower end of the continuous phase injection tube is connected with the continuous phase body chamber; a liquid inlet tube is arranged in the continuous phase injection tube; the lower end of the liquid inlet tube is connected with the second liquid chamber; the lower partition is connected with an outer tube, the lower end of the outer tube extends into the injection tube, and the upper end is connected with the second liquid chamber; the upper partition is connected with an inner tube, the inner tube extends into the outer tube, and the upper end is connected with the first liquid chamber. The present invention solves the problem of low existing production efficiency by setting multiple pairs of outer tubes and inner tubes; the continuous phase fluid sprayed by the injection tube realizes the control of the particle size of the microcapsules, and solves the problem of poor quality of existing microcapsule preparation.

Description

Technical Field

[0001] The invention belongs to the technical field of microcapsule manufacturing, and in particular relates to a drip tray assembly used for preparing microcapsules. Background Art

[0002] Microencapsulation technology is a technology that uses film-forming materials to encapsulate solids, liquids or gases into functional core-shell structures. Microencapsulation technology has been extended to various fields including medicine, pesticides, perfumery, coatings, food science, and cosmetics preparation.

[0003] Existing microcapsule machines usually have imprecise control over the formation of microcapsules. The particle size of the microcapsules is controlled only by the nozzle, and it is difficult to ensure the consistency of the particle size of the microcapsules, resulting in different particle sizes of the prepared microcapsules, poor yield and quality of the finished products.

[0004] At the same time, production through a single nozzle can only form droplets one by one, resulting in low production efficiency. Simply adding drop-making equipment will increase production costs and make it more difficult to precisely control too many devices.

[0005] Therefore, it is urgent to design a dripping device for preparing microcapsules to improve the overall preparation efficiency and ensure the overall preparation quality. Summary of the invention

[0006] The purpose of the present invention is to provide a drip tray assembly for preparing microcapsules, which solves the problem of low production efficiency in the prior art by connecting multiple outer tubes and inner tubes through upper and lower baffles; and controls the particle size of microcapsules through the continuous phase fluid sprayed through the spray tube, thereby solving the problem of poor quality of the prior art microcapsule preparation.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention discloses a drip tray assembly for preparing microcapsules, comprising a cylinder; the two ends of the cylinder are respectively connected with an upper end cover and a lower end cover; the inner wall of the cylinder is fixedly connected with an upper partition and a lower partition, and the interior of the cylinder is sequentially divided into a first liquid cavity, a second liquid cavity and a continuous phase cavity by the upper partition and the lower partition; the upper end cover is connected with a liquid injection pipe connected with the first liquid cavity; the lower surface of the lower end cover is connected with a plurality of injection pipes, and the injection pipes are all connected with the continuous phase cavity;

[0009] A continuous phase injection pipe is fixedly connected between the upper partition and the lower partition; the lower end surface of the continuous phase injection pipe is connected to the continuous phase body cavity; the upper end of the continuous phase injection pipe passes through the upper end cover, and the upper port is a closed structure; the upper end side wall of the continuous phase injection pipe is connected to a connecting pipe; a liquid inlet pipe is arranged in the continuous phase injection pipe; the upper end of the liquid inlet pipe extends out of the continuous phase injection pipe, and the lower end is connected to the second liquid cavity;

[0010] The lower surface of the lower partition is connected to an outer tube corresponding to the injection tube one by one; the lower end of the outer tube extends into the injection tube, and the upper end is connected to the second liquid cavity; the lower surface of the upper partition is connected to an inner tube corresponding to the outer tube one by one; the lower end of the inner tube extends into the outer tube, and the upper end is connected to the first liquid cavity; the outer diameter of the inner tube is smaller than the inner diameter of the outer tube.

[0011] Furthermore, a branch pipe is connected to the lower end of the liquid inlet pipe, and the branch pipe penetrates the side wall of the continuous phase injection pipe to achieve communication between the liquid inlet pipe and the second liquid chamber.

[0012] Furthermore, the lower end surface of the continuous phase injection pipe abuts against the lower end cover, and the side wall is provided with a through slot communicating with the continuous phase body cavity.

[0013] Furthermore, a shaft sleeve is rotatably connected to the outer wall of the continuous phase injection tube; the shaft sleeve is located in the first liquid chamber; a gear ring and an annular sealing plate are fixedly connected to the outer wall of the shaft sleeve; the annular sealing plate is provided with through holes corresponding to the inner tube one by one, and the lower surface of the annular sealing plate is tightly attached to the upper partition plate; the upper end cover is rotatably connected to a rotating shaft; the lower end of the rotating shaft is fixedly connected to a gear meshing with the gear ring.

[0014] Furthermore, the rotating shaft is fixedly connected with a pulling rod for pulling the rotating shaft to rotate.

[0015] Furthermore, a threaded hole is provided at the end of the pull rod, and a hand screw is threadedly connected thereto; the hand screw is used to abut against the upper end cover through the lower end surface to fix the rotation position of the rotating shaft.

[0016] Furthermore, the upper end cover is provided with two limiting blind holes; the limiting blind holes are clearance-matched with the hand screw; when the hand screw is matched with one of its limiting blind holes, the position of the through hole corresponds to that of the inner tube, and when the hand screw is matched with the other limiting blind hole, the position of the through hole and the inner tube are staggered to achieve sealing of the upper end of the inner tube.

[0017] Furthermore, a sealing gasket is attached to the lower surface of the annular sealing plate.

[0018] The present invention has the following beneficial effects:

[0019] The upper baffle and the lower baffle of the present invention connect multiple outer tubes and inner tubes, and the outer tubes and the inner tubes are respectively connected to the second liquid cavity and the first liquid cavity, so as to achieve the effect of synchronously controlling multiple pairs of outer tubes and inner tubes to synchronously prepare microcapsules, thereby effectively reducing the control difficulty and improving the overall production efficiency.

[0020] At the same time, by ejecting the continuous phase fluid in the continuous phase cavity from the injection tube, the dispersed phase flowing out of the outer tube and the inner tube is sheared, thereby controlling the particle size of the microcapsules, avoiding the situation of different particle sizes of the microcapsules, and effectively ensuring the overall quality of the microcapsules.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a drip tray assembly for preparing microcapsules of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure from an upward perspective;

[0025] Figure 3 for Figure 1 A top view of the structure;

[0026] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0027] Figure 5 is a schematic diagram of the structure of the upper end cover;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure from an upward perspective;

[0029] Figure 7 It is a schematic diagram of the structure of the shaft sleeve and the annular sealing plate;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-cylinder, 2-upper end cover, 3-lower end cover, 4-continuous phase injection pipe, 5-liquid inlet pipe, 6-shaft sleeve, 11-first liquid chamber, 12-second liquid chamber, 13-continuous phase body cavity, 101-upper baffle, 102-lower baffle, 104-outer tube, 105-inner tube, 201-liquid injection pipe, 202-rotating shaft, 203-gear, 204-pull rod, 205-hand screw, 206-limiting blind hole, 301-injection pipe, 401-through slot, 402-connecting pipe, 501-branch pipe, 601-tooth ring, 602-annular sealing plate, 603-through hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] See also Figure 1-4 As shown, the present invention is a drip tray assembly for preparing microcapsules, comprising a barrel 1; an upper end cover 2 and a lower end cover 3 are connected to both ends of the barrel 1, respectively, and the upper end cover 2 and the lower end cover 3 can be connected to the barrel 1 by screws or welding. An upper partition 101 and a lower partition 102 are welded to the inner wall of the barrel 1 or connected by a flange ring and bolts, and the interior of the barrel 1 is divided into a first liquid chamber 11, a second liquid chamber 12 and a continuous phase body chamber 13 from top to bottom in sequence by the upper partition 101 and the lower partition 102.

[0035] The upper end cover 2 is connected to a liquid injection pipe 201 connected to the first liquid chamber 11 , and the lower surface of the lower end cover 3 is connected to a plurality of injection pipes 301 , and the injection pipes 301 are all connected to the continuous phase cavity 13 ; the injection pipes 301 can be distributed in a circular array relative to the central axis of the cylinder 1 .

[0036] A continuous phase injection pipe 4 is welded between the upper partition 101 and the lower partition 102; the lower end surface of the continuous phase injection pipe 4 is connected to the continuous phase body cavity 13. Preferably, the lower end surface of the continuous phase injection pipe 4 abuts against the lower end cover 3, and the side wall is provided with a through slot 401 connected to the continuous phase body cavity 13. By abutting the lower end surface of the continuous phase injection pipe 4 against the lower end cover 3, the overall structural stability and strength can be improved.

[0037] The upper end of the continuous phase injection tube 4 passes through the upper end cover 2, and the upper port is a closed structure; the upper end side wall of the continuous phase injection tube 4 is connected to a connecting tube 402, which is used to inject a continuous phase, such as compressed air or a continuous phase fluid, into the continuous phase injection tube 4 through the connecting tube 402, and further inject it into the continuous phase body cavity 13 through the lower end of the continuous phase injection tube 4.

[0038] A liquid inlet pipe 5 is arranged inside the continuous phase injection pipe 4; the upper end of the liquid inlet pipe 5 extends out of the continuous phase injection pipe 4, and the lower end is connected to the second liquid chamber 12. Specifically, a branch pipe 501 is connected to the lower end of the liquid inlet pipe 5, and the liquid inlet pipe 5 and the branch pipe 501 are arranged perpendicular to each other, and both ends of the branch pipe 501 penetrate the side wall of the continuous phase injection pipe 4 to achieve the communication between the liquid inlet pipe 5 and the second liquid chamber 12. The side wall of the continuous phase injection pipe 4 can be provided with two mounting holes along the diameter direction, and the two ends of the branch pipe 501 are respectively fixed to the mounting holes by interference fit or welding, thereby improving the fixing effect of the liquid inlet pipe 5.

[0039] The lower surface of the lower partition 102 is connected to an outer tube 104 corresponding to the injection tube 301 ; the lower end of the outer tube 104 extends into the injection tube 301 , and the lower partition 102 is provided with a through hole connected to the outer tube 104 , so that the upper end of the outer tube 104 is connected to the second liquid chamber 12 .

[0040] The lower surface of the upper partition 101 is connected to an inner tube 105 corresponding to the outer tube 104 one by one; the lower end of the inner tube 105 extends into the outer tube 104, and the upper partition 101 is provided with a through hole connected to the inner tube 105, so that the upper end of the inner tube 105 is connected to the first liquid chamber 11; the outer diameter of the inner tube 105 is smaller than the inner diameter of the outer tube 104.

[0041] As a preferred solution, Figure 4-7 As shown, the outer wall of the continuous phase injection pipe 4 is rotatably connected with a sleeve 6; the sleeve 6 is located in the first liquid chamber 11; the outer wall of the sleeve 6 is welded or interference-fitted with a gear ring 601 and an annular sealing plate 602. The annular sealing plate 602 is provided with through holes 603 corresponding to the inner tube 105, and the lower surface of the annular sealing plate 602 is in close contact with the upper partition 101.

[0042] The upper end cover 2 is rotatably connected to the rotating shaft 202 through a bearing, and the rotating shaft 202 and the upper end cover 2 are sealed by a sealing ring. The lower end of the rotating shaft 202 is fixedly connected to a gear 203 meshing with the gear ring 601. The rotating shaft 202 is rotated by a wrench, etc., and the shaft sleeve 6 is driven to rotate through the gear 203 and the gear ring 601, so that the through hole 603 on the sealing plate 602 can be adjusted between the state of being connected with the inner tube 105 and the state of being misaligned.

[0043] In order to improve the convenience of rotating the shaft 202, the shaft 202 is welded or screwed with a lever 204, which is used to make it more convenient to turn the shaft 202. In addition, a threaded hole is provided at the end of the lever 204, and a hand screw 205 is threadedly connected; by screwing the hand screw 205, the lower end surface of the hand screw 205 is abutted against the upper end cover 2 to fix the rotation position of the shaft 202, thereby fixing the position of the sealing plate 602 after rotation adjustment, and improving the overall reliability.

[0044] As another preferred embodiment, the upper end cover 2 is provided with two limiting blind holes 206; the limiting blind holes 206 are clearance-matched with the hand screw 205; when the hand screw 205 is matched with one of its limiting blind holes 206, the through hole 603 corresponds to the position of the inner tube 105, and when the hand screw 205 is matched with the other limiting blind hole 206, the positions of the through hole 603 and the inner tube 105 are staggered, thereby achieving sealing of the upper end of the inner tube 105, and a sealing gasket is attached to the lower surface of the annular sealing plate 602, which can improve the sealing effect of the annular sealing plate 602 on the inner tube 105 and the first liquid chamber 11.

[0045] The positional relationship between the through hole 603 and the inner tube 105 can be more accurately and intuitively known through the limiting blind hole 206, thereby improving the convenience of adjustment. At the same time, by inserting the lower end of the hand-tightened screw 205 into the limiting blind hole 206, the position fixing effect can be further improved to avoid the occurrence of accidental rotation of the shaft 202.

[0046] The specific use principle of the present application is: the injection tube 201 is connected to the pump body to inject the inner core liquid of the microcapsule into the first liquid chamber 11; the liquid inlet tube 5 is connected to another pump body to inject the dispersed phase liquid that coats the inner core liquid of the microcapsule into the second liquid chamber 12.

[0047] At the same time, compressed air or continuous phase liquid is injected into the continuous phase cavity 13 through the connecting tube 402, and the inner core liquid and the dispersed phase liquid flow out from the lower ports of the inner tube 105 and the outer tube 104 simultaneously, so that the dispersed phase liquid covers the inner core liquid, and under the shearing action of the continuous phase flow, the microcapsules are quickly dispersed, which is beneficial to improving the overall preparation efficiency. At the same time, by controlling the flow rate of the continuous phase, it is also beneficial to control the particle size formed after the microcapsules are dispersed, thereby improving the preparation quality of the microcapsules.

[0048] When only a single droplet or micro-droplet needs to be prepared, the shaft 202 can be rotated to drive the sleeve 6 to rotate through the gear 203 and the gear ring 601, so that the through hole 603 and the inner tube 105 are staggered to achieve sealing of the upper end of the inner tube 105.

[0049] At this time, it is only necessary to inject the liquid for preparing the droplets or micro-droplets through the liquid inlet pipe 5, and to inject compressed air into the continuous phase cavity 13 through the connecting pipe 402. The inner tube 105 is sealed by the annular sealing plate 602, so as to avoid the inner tube 105 in the through state from affecting the preparation of the droplets or micro-droplets, thereby effectively improving the practicality and adaptability of the drip tray itself.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A drip tray assembly for preparing microcapsules, characterized in that: The invention comprises a cylinder (1); the two ends of the cylinder (1) are respectively connected to an upper end cover (2) and a lower end cover (3); the inner wall of the cylinder (1) is fixedly connected to an upper partition (101) and a lower partition (102), and the interior of the cylinder (1) is sequentially divided into a first liquid chamber (11), a second liquid chamber (12) and a continuous phase chamber (13) by the upper partition (101) and the lower partition (102); The upper end cover (2) is connected to a liquid injection pipe (201) in communication with the first liquid chamber (11); the lower surface of the lower end cover (3) is connected to a plurality of injection pipes (301), and the injection pipes (301) are all in communication with the continuous phase chamber (13); A continuous phase injection pipe (4) is fixedly connected between the upper partition (101) and the lower partition (102); the lower end of the continuous phase injection pipe (4) is in communication with the continuous phase body cavity (13); the upper end of the continuous phase injection pipe (4) passes through the upper end cover (2), and the upper end is a closed structure; the upper end side wall of the continuous phase injection pipe (4) is connected to a connecting pipe (402); A liquid inlet pipe (5) is arranged inside the continuous phase injection pipe (4); the upper end of the liquid inlet pipe (5) extends out of the continuous phase injection pipe (4), and the lower end is communicated with the second liquid chamber (12); The lower surface of the lower partition plate (102) is connected to an outer tube (104) corresponding one to one with the injection tube (301); the lower end of the outer tube (104) extends into the injection tube (301), and the upper end is connected to the second liquid chamber (12); The lower surface of the upper partition plate (101) is connected to an inner tube (105) corresponding to the outer tube (104) on a one-to-one basis; the lower end of the inner tube (105) extends into the outer tube (104), and the upper end is connected to the first liquid chamber (11); the outer diameter of the inner tube (105) is smaller than the inner diameter of the outer tube (104); The outer wall of the continuous phase injection pipe (4) is rotatably connected to a shaft sleeve (6); the shaft sleeve (6) is located in the first liquid chamber (11); the outer wall of the shaft sleeve (6) is fixedly connected to a gear ring (601) and an annular sealing plate (602); the annular sealing plate (602) is provided with through holes (603) corresponding to the inner tube (105) one by one, and the lower surface of the annular sealing plate (602) is in close contact with the upper partition plate (101); The upper end cover (2) is rotatably connected to a rotating shaft (202); a gear (203) meshing with the gear ring (601) is fixedly connected to the lower end of the rotating shaft (202); and a trigger rod (204) is fixedly connected to the rotating shaft (202) for triggering the rotating shaft (202) to rotate; The end of the pull rod (204) is provided with a threaded hole, and is threadedly connected with a hand screw (205); the hand screw (205) is used to abut against the upper end cover (2) through the lower end surface to achieve the fixing of the rotation position of the rotating shaft (202); The upper end cover (2) is provided with two limiting blind holes (206); the limiting blind holes (206) are clearance-matched with the hand screw (205); when the hand screw (205) is matched with one of the limiting blind holes (206), the positions of the through hole (603) and the inner tube (105) correspond, and when the hand screw (205) is matched with the other limiting blind hole (206), the positions of the through hole (603) and the inner tube (105) are staggered, thereby achieving sealing of the upper end of the inner tube (105).

2. A drip tray assembly for preparing microcapsules according to claim 1, characterized in that: The lower end of the liquid inlet pipe (5) is connected to a branch pipe (501), and the branch pipe (501) penetrates the side wall of the continuous phase injection pipe (4) to achieve communication between the liquid inlet pipe (5) and the second liquid chamber (12).

3. A drip tray assembly for preparing microcapsules according to claim 1, characterized in that: The lower end surface of the continuous phase injection pipe (4) abuts against the lower end cover (3), and the side wall is provided with a through slot (401) communicating with the continuous phase body cavity (13).

4. A drip tray assembly for preparing microcapsules according to claim 1, characterized in that: The lower surface of the annular sealing plate (602) is covered with a sealing gasket.

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