Interactive cavity structure
By designing an interactive cavity structure using diamond material and micron-sized pores, the problems of complex and costly fabrication of existing microfluidic interactive cavities are solved, achieving a low-cost and long-life homogenization effect, suitable for small and medium-sized enterprises.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-24
AI Technical Summary
The existing 'Y'-type and 'Z'-type microfluidic interactive cavities have complex manufacturing processes and high costs, which limits their popularization and large-scale application by small and medium-sized enterprises.
An interactive cavity structure was designed, including a feed channel, a micro-jet channel, and a discharge channel. It is made of diamond material with a pore size of micrometers. Under ultra-high pressure, the material passes through the micro-jet channel to form a high-speed micro-jet, achieving shearing, oscillation, and collision to achieve a homogenization effect.
It achieves a homogenization effect with simple structure, low cost and long service life, and is suitable for small and medium-sized enterprises, reducing equipment investment costs and improving equipment life.
Smart Images
Figure CN224024862U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an interactive cavity structure in the technical field of microfluidizer. BACKGROUND
[0002] Microfluidization is a process that uses high pressure (310 MPa) to force a fluid through a small orifice, creating supersonic fluid velocities and achieving dispersion, homogenization, emulsification, and nanoparticle formation. Interactive cavities, also known as interactive chambers, are typically used in microfluidizer high-pressure homogenizers. They are a core component for efficient material homogenization and are widely used in pharmaceutical, biological, food, chemical, and new energy industries.
[0003] Microfluidic interactive cavities, also known as homogenization cavities or microfluidic homogenization cavities, are a core component for efficient material homogenization and are widely used in pharmaceutical, biological, food, chemical, and new energy industries.
[0004] Homogenization cavities are the core of the new generation of microfluidic high-pressure homogenization equipment. They are modular in design, have a fixed internal shape, and have no moving parts. Unlike homogenization valves, they do not require adjustment of the valve gap. They have a variety of flow channel designs, including Y-type and Z-type, and multiple aperture sizes to match different homogenization applications. The diamond material and Y-type microfluidic diamond interactive cavities make full use of the supersonic material's high-speed self-collision explosion effect, reducing material wear on the cavity and greatly increasing the cavity's service life.
[0005] The structure of the "Y" type cavity: the cavity is "Y" shaped, and two streams of fluid mix at the intersection; it is suitable for liquid-liquid mixing, such as emulsification, drug encapsulation, and liposome preparation; the cavity is made using microfabrication technology, and combined with a micro pump and sensor for precise control.
[0006] The structural features of the "Z"-type cavity: the cavity is in "Z" type, and the fluid is subjected to shearing force and impact force in the zigzag channel; it is suitable for solid-liquid treatment, such as cell crushing, nanodispersion, deagglomeration, etc.
[0007] However, the manufacturing process of the "Y"-type cavity and the "Z"-type cavity is relatively complex, the precision requirement of the equipment is relatively high, and the cost is high, which limits the popularization and large-scale application of the technology, especially for small and medium-sized enterprises, the equipment investment cost is high, therefore, it is necessary to provide an interactive cavity structure, which is simple in structure, low in cost, long in service life and good in homogenization effect. The utility model discloses
[0008] The utility model discloses want to overcome the technical problem of prior art, provide an interactive cavity structure, simple structure, low cost, long service life, and the homogenization effect is better.
[0009] The utility model discloses a cavity valve body, the cavity valve body is set with the feed channel, the microfluidization channel and the discharge channel, the feed channel, the microfluidization channel and the discharge channel are sequentially arranged and are along linear distribution, the aperture of the microfluidization channel is less than the aperture of the feed channel, the aperture of the discharge channel, the feed channel is connected with the output end of the external homogenization valve and is conducted through, the discharge channel is connected with the input end of the external tubular heat exchanger and is conducted through.
[0010] From the above scheme, the feed channel, the microfluidization channel and the discharge channel are interactive cavities, and the material passes through the microfluidization channel (the aperture is less than 100 microns) under the action of ultra-high pressure (up to 60000psi / 4000bar / 400MPa) to form high-speed microfluidization, the speed can reach 500m / s (more than the sound speed 340m / s), and the material is processed through severe shearing, oscillation, collision, cavitation effect and opposite shooting, and the physical, chemical and structural properties of the material are changed, and finally the particle size is reduced and the narrow distribution is obtained, and the homogenization effect such as stability, uniformity and transparency is increased.
[0011] One preferred scheme is that the cavity valve body is a two-end sharp and middle round structure, the cavity valve body is a cylindrical structure, the upper diameter of the cavity valve body is equal to the lower diameter of the cavity valve body, the upper diameter of the cavity valve body and the lower diameter of the cavity valve body are both smaller than the middle diameter of the cavity valve body, and the cavity valve body is symmetrically distributed.
[0012] One preferred scheme is that the contact surface of the microfluidization channel and the feed channel and the contact surface of the microfluidization channel and the discharge channel are both conical surface structures.
[0013] A preferred solution is that the two ends of the cavity valve body are conical surface structures.
[0014] A preferred solution is that the aperture of the micro-fluid channel is less than 100 microns. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a perspective view of the utility model;
[0016] Figure 2 is a perspective view of the utility model;
[0017] Figure 3 is a perspective view of the utility model from another angle;
[0018] Figure 4 is Figure 3 an enlarged view of part A;
[0019] Figure 5 is a connection relationship diagram of the cavity valve body. DETAILED DESCRIPTION
[0020] As Figures 1 to 5 shown in the embodiment, the utility model includes a cavity valve body 1, the cavity valve body 1 is provided with a feeding channel 2, a micro-fluid channel 3 and a discharging channel 4, the feeding channel 2, the micro-fluid channel 3 and the discharging channel 4 are sequentially arranged and are distributed along a straight line, the aperture of the micro-fluid channel 3 is less than the aperture of the feeding channel 2 and the aperture of the discharging channel 4, the feeding channel 2 is in conductive connection with the output end of an external homogenizer valve 5, the discharging channel 4 is in conductive connection with the input end of an external tubular heat exchanger 6, and the cavity valve body 1 is a diamond structure.
[0021] When the material passes through the external homogenizer valve 5, the macromolecules and particles in the fluid can be refined into small molecules and microparticles through shearing, impact and cavitation effect under high pressure, so that the homogenization effect is achieved.
[0022] Under the action of high pressure, when the fluid passes through the narrow cutting gap, a great velocity gradient is generated, a shearing force is formed, and the liquid droplets are broken. The micro-fluid channel 3 is a micron pore channel, when the material passes through the micro-fluid channel 3, high-speed micro-fluid is formed, so that when some high-viscosity or high-concentration materials are processed, or the material is processed intermittently, the risk of blockage and accumulation can be effectively reduced, and the maintenance cost is reduced. The external tubular heat exchanger 6 is used to adjust the temperature of the material output from the interactive cavity. The feeding channel 2 is in sealing fit with the output end of the external homogenizer valve 5 through a water joint, and the discharging channel 4 is in sealing fit with the input end of the external tubular heat exchanger 6 through a water joint, so that a closed cavity is formed.
[0023] AsFigures 1 to 3 As shown, in this embodiment, the cavity valve body 1 has a structure with pointed ends and a round middle. The cavity valve body 1 has a cylindrical structure. The upper diameter of the cavity valve body 1 is equal to the lower diameter of the cavity valve body 1. The upper diameter and the lower diameter of the cavity valve body 1 are both smaller than the middle diameter of the cavity valve body 1. The cavity valve bodies 1 are symmetrically distributed.
[0024] like Figures 1 to 4 As shown, in this embodiment, the contact surfaces of the microjet channel 3 and the feed channel 2, and the contact surfaces of the microjet channel 3 and the discharge channel 4 are all conical structures, thereby guiding the material and further enhancing the homogenization effect.
[0025] like Figures 1 to 4 As shown, in this embodiment, both ends of the cavity valve body 1 are conical structures, which helps to ensure the sealing of the component connection.
[0026] like Figures 1 to 3 As shown, in this embodiment, the aperture of the microjet channel 3 is less than 100 micrometers.
[0027] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.
Claims
1. An interactive cavity structure, characterized in that: It includes a cavity valve body (1), which has a feed channel (2), a micro-jet channel (3) and a discharge channel (4). The feed channel (2), the micro-jet channel (3) and the discharge channel (4) are arranged sequentially and distributed in a straight line. The aperture of the micro-jet channel (3) is smaller than the aperture of the feed channel (2) and the aperture of the discharge channel (4). The feed channel (2) is connected to the output end of an external homogenizing valve (5), and the discharge channel (4) is connected to the input end of an external tubular heat exchanger (6).
2. The interactive cavity structure according to claim 1, characterized in that: The cavity valve body (1) has a structure with pointed ends and a round middle. The cavity valve body (1) has a cylindrical structure. The upper diameter of the cavity valve body (1) is equal to the lower diameter of the cavity valve body (1). The upper diameter and the lower diameter of the cavity valve body (1) are both smaller than the middle diameter of the cavity valve body (1). The cavity valve bodies (1) are symmetrically distributed.
3. The interactive cavity structure according to claim 1, characterized in that: The contact surfaces of the microjet channel (3) and the feed channel (2), and the contact surfaces of the microjet channel (3) and the discharge channel (4) are all conical structures.
4. The interactive cavity structure according to claim 1, characterized in that: Both ends of the cavity valve body (1) are conical structures.
5. The interactive cavity structure according to claim 1, characterized in that: The aperture of the microjet channel (3) is less than 100 micrometers.