Nutrient mixing device
By using a combined design of arc-shaped stirring sheets and cones in the nutrient solution preparation device, the preparation quality problems caused by vortexes and bubbles in the prior art are solved, and the solution is fully mixed and high-quality nutrient solution preparation is achieved.
Patent Information
- Application Number
- CN202411827488.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-14
AI Technical Summary
In the preparation of existing nutrient solution, due to the limitations of the stirring rod, vortexes and bubbles are easily generated, resulting in a decrease in the preparation quality and some batches cannot be used.
A nutrient mixing device including an arc-shaped stirring sheet and a joystick is designed. The arc-shaped stirring sheet rises in a spiral twist, and the surface area gradually decreases from bottom to top. Combined with the design of the cone, it avoids vortex generation and ensures full mixing.
Through the design of the arc-shaped stirring sheet, the solution is rotated and mixed simultaneously, and moves in the vertical spiral direction simultaneously to achieve full mixing, reduce pressure difference, avoid vortex and bubble generation, and ensure the preparation quality of the nutrient solution.
Smart Images
Figure CN119607966A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical auxiliary devices, and more specifically, to a nutrient mixing device. Background Art
[0002] Nutrient solution (nutrient) is an important medical auxiliary means, which has the functions of supplementing nutrition, promoting absorption, and promoting wound healing. When the human body cannot eat normally due to illness, surgery or other reasons, the nutrient solution can quickly provide the body with the required energy and nutrients through intravenous infusion or oral administration, thereby avoiding the occurrence of malnutrition and energy failure. The preparation of nutrient solution should follow the following order: 1. Calculate the type and quantity of nutrients required according to the patient's condition and needs; 2. Dissolve and mix electrolytes, glucose, amino acids, fat emulsions and other nutrients separately to prepare mother solutions; 3. Mix various mother solutions in the prescribed order, and add appropriate amount of water to finally prepare parenteral nutrition solution. The preparation of parenteral nutrition solution needs to be carried out strictly in accordance with the operating specifications to ensure its safety and effectiveness. When mixing various mother solutions, attention should be paid to mixing electrolyte solutions first, then glucose and amino acid solutions, and finally fat emulsions to reduce precipitation and bubble generation. After preparation, strict quality control should be carried out, including checking the appearance, odor, pH value and osmotic pressure of the nutrient solution to ensure that it meets the standards.
[0003] However, there are still some shortcomings in its actual use, such as: in the preparation of the current nutrient solution, due to the limitations and influence of the stirring rod used in manual preparation, the stirring rod usually revolves around the center of the container (center point) as the reference point, resulting in too high a central speed in the container, which causes a pressure difference due to fluid flow on the section perpendicular to the speed of the liquid material, which will eventually lead to the formation of vortices, and under the action of centrifugal force, the liquid level at the container wall rises, while the liquid level at the center drops, and as the speed increases, the larger the vortex formed, which will cause the axial flow to be destroyed, and the liquid will flow entirely in the form of radial flow, which will cause the center of the vortex to be exposed to the air, and the vortex will continuously send gas into the liquid material and form a large number of bubbles at the edge of the vortex, thereby affecting the preparation quality of the nutrient solution. If a large number of bubbles are generated, the prepared nutrient solution of that batch cannot be used and will be discarded. Summary of the invention
[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a nutrient mixing device, which provides an arc-shaped stirring blade, a joystick and a connecting plate. First, the joystick drives the arc-shaped stirring blade to rotate in the stirring container with a fixed axis as the base point. At this time, the arc-shaped stirring blade can drive the solution in the stirring container to perform axial rotation and mixing. At the same time, the solution can gradually rise along the surface trajectory of the arc-shaped stirring blade, and utilize the setting that the surface area of the arc-shaped stirring blade 4 gradually decreases from bottom to top. During the spiral rising process, the liquid will gradually collapse downward, thereby mixing with the liquid in the middle of the container again, increasing the disorder of the liquid movement during mixing, so that the solution can move in the vertical spiral direction synchronously while rotating and mixing, thereby coupling the moving trajectories of the two to achieve the purpose of sufficient mixing, reduce the pressure difference range caused by fluid flow, and fundamentally avoid the generation of vortices, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nutrient mixing device, comprising a stirring container, a fixed shaft is fixedly installed at the inner bottom end of the stirring container, an inner cavity is arranged inside the stirring container, an arc-shaped stirring piece is fitted on the inner wall of the stirring container, a joystick is fixedly installed on the top of the arc-shaped stirring piece, a connecting piece is integrally formed on one side of the bottom end of the arc-shaped stirring piece, a cone is inlaid and installed on one side of the connecting piece, a fixed notch is opened at the bottom end of the cone, the bottom end of the cone is rotatably fitted between the fixed notch and the fixed shaft, and there is a clearance fit between the fixed shaft and the fixed notch;
[0006] The arc-shaped stirring blade is a sheet-like structure as a whole, and is in a spirally twisted ascending posture. The area of the arc-shaped stirring blade decreases from bottom to top until the area reaches the minimum at the height of the joystick. The twisting posture of the connecting piece is consistent with the twisting posture of the arc-shaped stirring blade, and the height of the connecting piece is ≤ half of the height of the cone. The cone is cone-shaped as a whole, and the total height of the cone is less than the horizontal height of the arc-shaped stirring blade. The centers of the stirring container, the inner cavity and the cone are kept in a colinear distribution, and the horizontal height of the arc-shaped stirring blade is less than the horizontal height of the stirring container.
[0007] In a preferred embodiment, the surfaces of the arc-shaped stirring blades are smooth, and the arc-shaped stirring blades are made entirely of medical-grade PP or alloy material.
[0008] In a preferred embodiment, the arc-shaped stirring blade is twisted gradually from bottom to top as a whole, and the inner twisting curvature of the arc-shaped stirring blade is greater than the outer twisting curvature.
[0009] In a preferred embodiment, the top end of the joystick is configured to be conical, and the surface of the joystick is provided with cross anti-slip patterns.
[0010] In a preferred embodiment, the fixing notch is at the same height as the fixing shaft, and the inner wall surface of the fixing notch is smooth.
[0011] In a preferred embodiment, the overall trajectory of the arc-shaped stirring blade forms a trajectory in a semicircular range on a single plane, and the angle between the arc-shaped stirring blade and the connecting blade is less than 90°.
[0012] Technical effects and advantages of the present invention:
[0013] The present invention provides an arc-shaped stirring piece, a joystick and a connecting piece, and utilizes the cooperation of the two. First, the joystick drives the arc-shaped stirring piece to rotate in the stirring container with a fixed axis as a base point. At this time, the arc-shaped stirring piece can drive the solution in the stirring container to perform axial rotation and mixing. At the same time, the solution can gradually rise along the surface trajectory of the arc-shaped stirring piece, so that the solution can rotate and mix while moving in a vertical spiral direction synchronously, thereby coupling the movement trajectories of the two to achieve the purpose of sufficient mixing, and can make the rotation speed of the solution at various locations in the container relatively uniform, reduce the pressure difference range caused by fluid flow, and fundamentally avoid the generation of vortices.
[0014] At the same time, as the solution gradually rises along the surface trajectory of the arc-shaped stirring blade, due to the setting that the surface area of the arc-shaped stirring blade gradually decreases from bottom to top, the liquid will gradually collapse downward during the spiral rise process, thereby mixing with the liquid in the middle of the container again, increasing the disorder of the liquid movement during mixing, and when the liquid moves to the highest point, all the solution that rises to the highest point will return to the bottom range of the stirring container under the action of gravity, and continue to complete a new round of mixing process. This reciprocating process can ensure that the proportions of each solution are uniform, directly avoid the generation of a large number of bubbles during stirring from the root, and effectively ensure the preparation quality of the nutrient solution to achieve standard quality of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0016] Figure 2 It is a schematic diagram of a half-section structure of the present invention;
[0017] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the arc-shaped stirring blade of the present invention;
[0018] Figure 4 This is a schematic diagram of the bottom surface structure of the arc-shaped stirring piece of the present invention;
[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;
[0020] Figure 6It is a top view schematic diagram of the present invention;
[0021] Figure 7 It is a multi-angle schematic diagram of the arc-shaped stirring blade of the present invention;
[0022] Figure 8 It is a schematic diagram of the overall side structure of the arc-shaped stirring blade of the present invention;
[0023] Fig. 9 It is a schematic diagram of the three-dimensional assembly structure of the present invention;
[0024] Fig.10 It is a schematic diagram of the overall stirring trajectory of the present invention.
[0025] The figures are marked as follows: 1. stirring container; 2. fixed shaft; 3. inner cavity; 4. arc-shaped stirring blade; 5. joystick; 6. connecting piece; 7. cone; 8. fixed notch. DETAILED DESCRIPTION
[0026] 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.
[0027] As attached Figure 1 To Attachment Fig.10The nutrient mixing device shown in the figure comprises a stirring container 1, a fixed shaft 2 is fixedly installed at the bottom end of the stirring container 1, an inner cavity 3 is arranged inside the stirring container 1, an arc-shaped stirring piece 4 is fitted on the inner wall of the stirring container 1, a joystick 5 is fixedly installed on the top of the arc-shaped stirring piece 4, and a connecting piece 6 is integrally formed on one side of the bottom end of the arc-shaped stirring piece 4. Through the above arrangement, it can be ensured that the joystick 5 drives the arc-shaped stirring piece 4 to rotate in the stirring container 1, thereby reducing the situation where the local centrifugal force caused by the revolution is too large and the eddy current is generated, and avoiding the problem of a large number of bubbles being generated during the stirring process. A cone 7 is inlaid and installed on one side of the connecting piece 6, and a fixed notch 8 is opened at the bottom end of the cone 7. The bottom end of the cone 7 is rotatably mounted between the fixed notch 8 and the fixed shaft 2, and the fixed shaft 2 is connected to the fixed The slots 8 are fitted with clearances. Through the above arrangement, when the joystick 5 drives the arc-shaped stirring blade 4 to rotate, the cone 7 located at the center of the middle of the stirring container 1 will break the surface tension of the liquid during the rotation process. Therefore, when the liquid rotates, once there is a tendency for a vortex to appear, the cone 7 can effectively block its continued development and expansion, thereby avoiding the situation where the vortex is formed and becomes larger as the rotation speed increases during stirring, resulting in the destruction of the axial flow. The liquid flows entirely in the form of a radial flow fluid, exposing the center of the vortex to the air, thereby continuously sending gas into the liquid material, and forming a large number of bubbles at the edge of the vortex, further increasing the mixing quality of the nutrient solution in the proportioning, reducing the situation where the batch of nutrient solution cannot be used and is discarded due to the presence of a large number of bubbles, reducing losses and production costs while ensuring the working quality of the proportioning;
[0028] The arc stirring blade 4 is a sheet-like structure as a whole, and is in a spiral twisted rising posture. The area of the arc stirring blade 4 decreases from the bottom to the top until the height area of the joystick 5 reaches the minimum. The twisting posture of the connecting piece 6 is consistent with the twisting posture of the arc stirring blade 4, and the height of the connecting piece 6 is ≤ half of the height of the cone 7. The cone 7 is a cone as a whole, and the total height of the cone 7 is less than the horizontal height of the arc stirring blade 4. The centers of the stirring container 1, the inner cavity 3 and the cone 7 are kept in a colinear distribution, and the horizontal height of the arc stirring blade 4 is less than the horizontal height of the stirring container 1. Horizontal height; through the above-mentioned setting, as the solution gradually rises along the surface trajectory of the arc-shaped stirring blade 4, due to the setting that the surface area of the arc-shaped stirring blade 4 gradually decreases from bottom to top, the liquid will gradually collapse downward during the spiral rise process, thereby mixing with the liquid in the middle of the container again, increasing the disorder of the liquid movement during mixing, and when the liquid moves to the highest point, all the solution that rises to the highest point will return to the bottom range of the stirring container 1 due to the action of gravity, and so on and so forth, which can ensure that the proportions of each solution are uniform and the quality of the nutrient solution is guaranteed.
[0029] The surfaces of the arc-shaped stirring blades 4 are smooth, and the arc-shaped stirring blades 4 are made of medical-grade PP or alloy materials as a whole. The top of the joystick 5 is set to be conical, and the surface of the joystick 5 is provided with cross anti-slip patterns. The fixed slot 8 is at the same height as the fixed shaft 2, and the inner wall surface of the fixed slot 8 is smooth. Through the above-mentioned setting, the matching accuracy between the fixed slot 8 and the fixed shaft 2 can be increased, thereby ensuring the smoothness of the arc-shaped stirring blade 4 during rotation and stirring, and improving flexibility.
[0030] For details, please refer to the attached manual Figure 3 The arc-shaped stirring blade 4 is twisted gradually from bottom to top as a whole, and the inner twisting curvature of the arc-shaped stirring blade 4 is greater than the outer twisting curvature.
[0031] The specific implementation method is: by using the different twisting curvatures of the arc-shaped stirring blade 4, when stirring the inside of the stirring container 1, it can use its own curvature to rotate and mix with the solution, and at the same time, the solution is gradually lifted upward in a spiral along its own twisted surface, so that the solution can rotate and mix while moving in the vertical direction at the same time, so that the movement trajectories of the two are overlapped to achieve the purpose of sufficient mixing, thereby further improving its mixing effect.
[0032] For details, please refer to the attached manual Figure 6 -Attached Figure 7 The overall trajectory of the arc-shaped stirring blade 4 forms a semicircular trajectory on a single plane, and the angle between the arc-shaped stirring blade 4 and the connecting blade 6 is less than 90°.
[0033] The specific implementation method is: utilizing the semicircular trajectory formed by the arc-shaped stirring blade 4 on a plane to make its moving trajectory match the stirring container 1, thereby improving the fit between the arc-shaped stirring blade 4 and the stirring container 1, and further improving the matching accuracy of each structure of the device during the liquid preparation process.
[0034] Working principle of the present invention:
[0035] Step 1: First, the operator assembles the various components of the device normally, and then uses the device normally. Subsequently, a variety of solutions to be mixed are added into the stirring container 1 in sequence, and at the same time, the cone 7 is sleeved on the top of the fixed shaft 2 through the fixed notch 8 at its bottom end. At this time, the outer edge of the arc-shaped stirring blade 4 maintains a close contact with the stirring container 1.
[0036] The second step: first, the operator drives the arc-shaped stirring blade 4 in the stirring container 1 with the fixed axis 2 as the base point to perform self-rotation motion through the joystick 5. While rotating, the cone 7 and the fixed axis 2 also maintain relative rotation. At this time, the arc-shaped stirring blade 4 can drive the solution in the stirring container 1 to perform axial rotation and mixing. At the same time, the solution can gradually rise along the surface trajectory of the arc-shaped stirring blade 4, so that the solution can move in the vertical spiral direction synchronously while rotating and mixing, thereby coupling the movement trajectories of the two to achieve the purpose of sufficient mixing, so that the rotation speed of the solution at various places in the container is relatively uniform, the pressure difference range caused by the flow of the fluid is reduced, and the generation of vortices is fundamentally avoided. At the same time, as the solution gradually rises along the surface trajectory of the arc-shaped stirring blade 4, due to the setting that the surface area of the arc-shaped stirring blade 4 gradually decreases from bottom to top, the liquid will gradually collapse downward during the spiral rising process, thereby contacting the liquid in the middle of the container. The liquid moves to the highest point and all the solutions that rise to the highest point will return to the bottom layer of the stirring container 1 due to gravity, and continue to complete a new round of mixing process. This reciprocating process can ensure that the proportions of each solution are uniform, so as to meet the quality standards for use. At the same time, it can effectively block the centrifugal force during stirring, which causes the liquid level at the container wall to rise and the liquid level at the center to drop. All the liquids flow in the form of radial flow, which eventually exposes the center of the vortex to the air. At the same time, the vortex will continuously send gas into the liquid material and form a large number of bubbles at the edge of the vortex, directly avoiding the generation of a large number of bubbles during stirring from the root, effectively ensuring the preparation quality of the nutrient solution, and reducing the scrap probability of the nutrient solution. Finally, the device completes the stirring and proportioning of the nutrient solution.
[0037] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aged and severely worn parts inside the device.
[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0039] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
[0040] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A nutrient mixing device, comprising a stirring container, wherein a fixed shaft is fixedly installed at the bottom end of the stirring container, and an inner cavity is provided inside the stirring container, characterized in that: The inner wall of the stirring container is fitted with an arc-shaped stirring blade, a joystick is fixedly installed on the top of the arc-shaped stirring blade, a connecting piece is integrally formed on one side of the bottom end of the arc-shaped stirring blade, a cone is inlaid and installed on one side of the connecting piece, a fixing notch is opened at the bottom end of the cone, the bottom end of the cone is rotatably fitted between the fixing notch and the fixing shaft, and there is a clearance fit between the fixing shaft and the fixing notch; The arc-shaped stirring blade is a sheet-like structure as a whole, and is in a spirally twisted ascending posture. The area of the arc-shaped stirring blade decreases from bottom to top until the area reaches the minimum at the height of the joystick. The twisting posture of the connecting piece is consistent with the twisting posture of the arc-shaped stirring blade, and the height of the connecting piece is ≤ half of the height of the cone. The cone is cone-shaped as a whole, and the total height of the cone is less than the horizontal height of the arc-shaped stirring blade. The centers of the stirring container, the inner cavity and the cone are kept in a colinear distribution, and the horizontal height of the arc-shaped stirring blade is less than the horizontal height of the stirring container.
2. A nutrient mixing device according to claim 1, characterized in that: The surfaces of the arc-shaped stirring blades are all smooth, and the arc-shaped stirring blades are made entirely of medical-grade PP or alloy material.
3. A nutrient mixing device according to claim 1, characterized in that: The arc-shaped stirring blade is twisted gradually from bottom to top as a whole, and the inner twisting curvature of the arc-shaped stirring blade is greater than the outer twisting curvature.
4. A nutrient mixing device according to claim 1, characterized in that: The top end of the joystick is arranged in a cone shape, and the surface of the joystick is arranged with cross anti-skid patterns.
5. A nutrient mixing device according to claim 1, characterized in that: The fixing notch is at the same height as the fixing shaft, and the inner wall surface of the fixing notch is smooth.
6. A nutrient mixing device according to claim 1, characterized in that: The overall trajectory of the arc-shaped stirring blade forms a trajectory in a semicircular range on a single plane, and the angle between the arc-shaped stirring blade and the connecting blade is less than 90°.