Medical modified raw material stirring machine

Abstract

The utility model relates to a kind of medical modified raw material stirrers, including base, shell and the inner bag for loading modified raw material;The shell is set at the top of the base, the top of the shell is equipped with sealing ring, the outside of the shell is hinged with cover plate by hinged shaft, and the cover plate is equipped with exhaust hole;The inner bag is located below the sealing ring, and the cavity for filling heat conducting oil is formed between the inner bag and the shell.The medical modified raw material stirrer, by heat conducting oil indirect heating, cooperate spiral heating wire, realize the overall uniform heating of inner bag, avoid the local overheating caused by traditional direct heating, ensure that medical modified raw material is stably stirred in preset temperature range, reduce the deterioration of raw material performance due to temperature fluctuation, and ensure that the quality of final product meets medical standards.

Description

Technical Field

[0001] This utility model relates to the field of medical modified raw material mixing technology, specifically a medical modified raw material mixer. Background Technology

[0002] In the processing of medical modified raw materials (such as medical polymers and modified resins), stirring and temperature control are crucial steps to ensure the stability of raw material performance. Medical modified raw materials are highly sensitive to temperature and require uniform mixing within a specific temperature range. Improper temperature control or uneven mixing can easily lead to deterioration of raw material properties and component stratification, thereby affecting the safety and reliability of subsequent medical products (such as medical catheters and implantable device accessories). Therefore, stringent requirements are placed on the temperature control accuracy and mixing effect of the stirring device.

[0003] Currently, most medical raw material mixers used in the industry employ electric heating elements to directly heat the mixing container for temperature control. This heating method is prone to causing localized overheating of the container due to concentrated heat. This leads to excessive heating and degradation or denaturation of raw materials near the heating element, while raw materials further away from the heating element remain too cold, making it difficult to achieve an ideal mixing state and resulting in uneven overall performance of the raw materials. At the same time, the mixing structure of traditional mixing devices is mostly a single set of horizontal impellers, which cannot effectively agitate the raw materials at the bottom of the container, easily causing raw material sedimentation and further exacerbating the problem of uneven mixing. This makes it difficult to meet the dual requirements of homogenization and temperature stability for medical modified raw materials. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a medical modified raw material mixer, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medical modified raw material mixer, comprising a base, an outer shell, and an inner liner for loading modified raw materials; The outer shell is disposed on the top of the base, and a sealing ring is provided on the top of the outer shell. A cover plate is hinged to the outer side of the outer shell through a hinge shaft, and an exhaust hole is provided on the cover plate. The inner liner is located below the sealing ring, and a cavity for filling heat transfer oil is formed between the inner liner and the outer shell. The cavity is equipped with a heating wire, which is spiral-shaped and immersed in the heat transfer oil for heating the heat transfer oil. The inner liner is equipped with a stirring assembly for stirring and modifying raw materials, and a discharge structure for discharging the stirred and modified raw materials.

[0006] Furthermore, an injection pipe is connected to the outer side of the outer shell, and one end of the injection pipe is connected to the cavity for injecting heat transfer oil into the cavity.

[0007] Furthermore, the stirring assembly includes a sleeve that extends vertically through the outer shell and the inner liner, a rotating shaft is rotatably connected inside the sleeve via a bearing, a motor is mounted on the base, and the output end of the motor is connected to the rotating shaft for transmission. The top of the rotating shaft extends into the inner liner, and the rotating shaft is equipped with two sets of stirring blades.

[0008] Furthermore, both ends of the stirring blade located below are bent upwards to form bent portions.

[0009] Furthermore, the discharge structure includes a discharge pipe that extends laterally through the outer shell and the inner liner, and the bottom of the discharge pipe is connected to a discharge pipe. The discharge pipe is provided with an installation cylinder at one end away from the inner liner. A connecting rod is provided through the right side wall of the installation cylinder. One end of the connecting rod extends into the discharge pipe and is provided with a sealing plug for sealing the discharge pipe.

[0010] Furthermore, a limiting ring is installed at one end of the connecting rod near the inner liner, and a spring is provided between the limiting ring and the inner wall of the mounting cylinder, which is sleeved on the outside of the connecting rod. The limiting ring is threaded with a limiting bolt, and the outer wall of the mounting cylinder is provided with an L-shaped groove corresponding to the limiting bolt. The limiting bolt is slidably connected in the groove.

[0011] Furthermore, a viewing window is provided on the discharge pipe at the position corresponding to the discharge pipe.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This medical modified raw material mixer uses indirect heating via heat transfer oil, combined with a spiral heating wire, to achieve uniform heating of the entire inner tank. This avoids localized overheating caused by traditional direct heating, ensuring stable mixing of medical modified raw materials within a preset temperature range. It also reduces the degradation of raw material performance caused by temperature fluctuations, ensuring that the final product quality meets medical standards.

[0013] 2. This medical modified raw material mixer features a double-layer mixing blade working in tandem. The upper mixing blade enables horizontal mixing, while the lower mixing blade with a bend solves the problem of bottom sedimentation, forming a three-dimensional mixing trajectory that ensures uniform mixing of raw materials without dead corners. Compared to traditional single-set mixing blades, the mixing efficiency is significantly improved, which can shorten the mixing time and avoid differences in raw material performance caused by uneven mixing, thereby improving product consistency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the outer shell of this utility model; Figure 3 This is a schematic diagram of the stirring assembly structure of this utility model; Figure 4 This is a schematic diagram of the material discharge structure of this utility model.

[0015] In the diagram: 1. Base; 2. Outer shell; 3. Inner liner; 4. Sealing ring; 5. Cover plate; 6. Stirring assembly; 601. Sleeve; 602. Rotating shaft; 603. Motor; 604. Stirring blade; 7. Discharge structure; 701. Discharge pipe; 702. Discharge pipe; 703. Mounting cylinder; 704. Connecting rod; 705. Sealing plug; 706. Limiting ring; 707. Spring; 708. Limiting bolt; 709. Slide groove; 8. Heating wire; 9. Filling pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This embodiment of a medical modified raw material mixer achieves precise temperature control through heat transfer oil heating, improves mixing efficiency with double-layer mixing blades, and ensures convenient and clean discharge by adding an elastic sealed discharge structure, thus meeting the mixing and processing requirements in the production of medical materials; Its structure mainly consists of a base 1, outer shell 2, inner liner 3, sealing ring 4, cover plate 5, stirring assembly 6, discharge structure 7, heating wire 8, and filling pipe 9. The components work together to realize the functions of heating, stirring and discharging raw materials.

[0018] Specifically, the base 1 is the basic support component of the device, made of cast iron. The outer shell 2 is fixed to the top of the base 1. The outer shell 2 is a double-layered hollow metal cylinder. A cavity is formed between the inner side and the inner liner 3 to be filled with heat transfer oil. The outer side of the outer shell 2 is hinged to the cover plate 5 through a hinge shaft. The cover plate 5 can rotate around the hinge shaft. When closed, it fits with the sealing ring 4 on the top of the outer shell 2 to form a closed stirring space. The cover plate 5 has an exhaust hole to discharge the gas volatilized by the raw materials or the water vapor generated by heating during the stirring process, so as to avoid excessive pressure in the cavity. Furthermore, a filling pipe 9 is fixed to the outside of the outer shell 2. One end of the filling pipe 9 is connected to the cavity and is used to replenish or replace the heat transfer oil in the cavity. The pipe body is equipped with a valve to control the filling and shut-off of the heat transfer oil.

[0019] Furthermore, the inner liner 3 is located inside the outer shell 2 and below the sealing ring 4. It is made of food-grade stainless steel, which is corrosion-resistant and easy to clean. It can directly load medical modified raw materials without contaminating them. The cavity between the inner liner 3 and the outer shell 2 is equipped with a spiral heating wire 8, which is immersed in heat-conducting oil. When energized, it can quickly heat the heat-conducting oil. Through the heat conduction of the heat-conducting oil, the inner liner 3 is heated evenly, thereby heating the raw materials inside and drying them. The spiral structure can expand the heating area, ensuring that the heat-conducting oil is heated evenly and avoiding excessive local temperature that could cause the raw materials to deteriorate.

[0020] In detail, the stirring assembly 6 is located inside the inner liner 3 between the inner liner 3 and the base 1, and is used to efficiently stir the raw materials. It includes a sleeve 601, a rotating shaft 602, a motor 603, and stirring blades 604.

[0021] The sleeve 601 vertically penetrates the outer shell 2 and the inner liner 3. The outer side is fixed to the outer shell 2 and the inner liner 3, and the inner side is rotatably connected to the rotating shaft 602 through the bearing, which can prevent the heat transfer oil from leaking and the raw materials from overflowing. The bottom of the rotating shaft 602 is connected to the output end of the motor 603 on the base 1, and the motor 603 provides rotational power to the rotating shaft 602. The top of the rotating shaft 602 extends into the inner liner 3, and two sets of stirring blades 604 are fixed on the outer side. Both ends of the lower stirring blades 604 are bent upward to form a bent part. The bent part can stir the raw materials at the bottom of the inner liner 3 upward, avoiding the raw materials from settling at the bottom and causing uneven mixing.

[0022] More specifically, the discharge structure 7 is set on the side wall of the outer shell 2 and the inner liner 3 for discharging the raw materials after mixing, including discharge pipe 701, discharge pipe 702, mounting cylinder 703, connecting rod 704, sealing plug 705, limiting ring 706, spring 707, limiting bolt 708 and slide groove 709.

[0023] The discharge pipe 701 extends horizontally through the outer shell 2 and the inner liner 3, with its inner side connected to the inner liner 3 and its outer side connected to the discharge pipe 702. The discharge pipe 702 is inclined to facilitate the smooth discharge of raw materials. The end of the discharge pipe 701 away from the inner liner 3 is fixedly installed with a cylinder 703. A connecting rod 704 is installed through the right side wall of the cylinder 703. One end of the connecting rod 704 extends into the discharge pipe 701 and is fixed with a sealing plug 705. The sealing plug 705 is made of rubber and can tightly seal the discharge pipe 701 to prevent raw materials from leaking during mixing.

[0024] In actual installation, a limiting ring 706 is fixed at one end of the connecting rod 704 near the inner liner 3. A spring 707 is provided between the limiting ring 706 and the inner wall of the mounting cylinder 703, and is sleeved on the outside of the connecting rod 704. The spring 707 can push the limiting ring 706 with its elastic force to keep the sealing plug 705 in a sealing state. A limiting bolt 708 is threaded onto the limiting ring 706. An L-shaped groove 709 is provided on the outer wall of the mounting cylinder 703. The limiting bolt 708 is slidably connected in the groove 709. Rotating the limiting bolt 708 can fix the position of the connecting rod 704 and control the opening and closing of the sealing plug 705. A viewing window is provided on the discharge pipe 701 at the position corresponding to the discharge pipe 702 to facilitate observation of the discharge progress.

[0025] In practical applications, the cover plate 5 is opened, and the medical modified raw materials to be stirred are poured into the inner liner 3. The cover plate 5 is then closed, allowing it to fit against the sealing ring 4 to form a sealed space. Heat transfer oil is injected into the cavity between the outer shell 2 and the inner liner 3 through the filling pipe 9 until the heat transfer oil completely submerges the heating wire 8. The valve of the filling pipe 9 is then closed. According to the heating requirements of the raw materials, the heating temperature of the heating wire 8 is set, and the heating wire 8 is activated to heat the heat transfer oil. The heat transfer oil gradually raises the temperature of the inner liner 3 to the preset value through heat conduction, thereby drying the modified raw materials inside the inner liner.

[0026] During the stirring process, the motor 603 on the base 1 is started. The motor 603 drives the rotating shaft 602 to rotate around the sleeve 601. The rotating shaft 602 drives the two sets of stirring blades 604 to rotate synchronously. The upper stirring blade 604 stirs the raw materials horizontally, while the lower stirring blade 604 with the bent part stirs the raw materials at the bottom of the inner liner 3 upward to avoid sedimentation. The two sets of stirring blades 604 work together to achieve all-round mixing of the raw materials. During the stirring process, the gas volatilized from the raw materials is discharged through the exhaust hole of the cover plate 5 to prevent the pressure in the cavity from being too high.

[0027] When discharge is required, turn off motor 603 and heating wire 8; rotate limit bolt 708 to slide along L-shaped groove 709 of mounting cylinder 703, release the fixing of connecting rod 704, pull connecting rod 704, drive sealing plug 705 to disengage from discharge pipe 701, spring 707 is compressed, mixed raw materials in inner liner 3 flow into discharge pipe 702 through discharge pipe 701, and are discharged to collection container through discharge pipe 702; observe the discharge progress through the viewing window of discharge pipe 701, after the raw materials are completely discharged, release connecting rod 704, spring 707 resets and pushes limit ring 706 and connecting rod 704, so that sealing plug 705 re-seals discharge pipe 701, rotate limit bolt 708 to fix position; open cover plate 5, clean inner liner 3 and stirring blade 604, and prepare for the next stirring.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medical modified raw material mixer, characterized in that: Includes a base (1), an outer shell (2), and an inner liner (3) for loading modified raw materials; The outer shell (2) is disposed on the top of the base (1), and a sealing ring (4) is provided on the top of the outer shell (2). A cover plate (5) is hinged to the outer side of the outer shell (2) through a hinge shaft, and an exhaust hole is provided on the cover plate (5). The inner liner (3) is located below the sealing ring (4), and a cavity for filling heat transfer oil is formed between the inner liner (3) and the outer shell (2); The cavity is provided with a heating wire (8), which is spiral in shape and immersed in the heat transfer oil for heating the heat transfer oil; The inner liner (3) is provided with a stirring assembly (6) for stirring and modifying raw materials, and a discharge structure (7) for discharging the stirred and modified raw materials.

2. The medical modified raw material mixer according to claim 1, characterized in that: The outer side of the outer shell (2) is connected to a filling pipe (9), one end of which is connected to the cavity and used to fill the cavity with heat transfer oil.

3. The medical modified raw material mixer according to claim 1, characterized in that: The stirring assembly (6) includes a sleeve (601) that runs vertically through the outer shell (2) and the inner liner (3). A rotating shaft (602) is rotatably connected inside the sleeve (601) via a bearing. A motor (603) is installed on the base (1). The output end of the motor (603) is connected to the rotating shaft (602) in a transmission connection. The top of the rotating shaft (602) extends into the interior of the inner liner (3), and the rotating shaft (602) is provided with two sets of stirring blades (604).

4. A medical modified raw material mixer according to claim 3, characterized in that: Both ends of the stirring blade (604) located below are bent upwards to form bent portions.

5. A medical modified raw material mixer according to claim 1, characterized in that: The discharge structure (7) includes a discharge pipe (701) that runs horizontally through the outer shell (2) and the inner liner (3), and the bottom of the discharge pipe (701) is connected to a discharge pipe (702). The discharge pipe (701) is provided with an installation cylinder (703) at one end away from the inner liner (3). A connecting rod (704) is provided through the right side wall of the installation cylinder (703). One end of the connecting rod (704) extends into the discharge pipe (701) and is provided with a sealing plug (705) for sealing the discharge pipe (701).

6. A medical modified raw material mixer according to claim 5, characterized in that: A limiting ring (706) is installed at one end of the connecting rod (704) near the inner liner, and a spring (707) is provided between the limiting ring (706) and the inner wall of the mounting cylinder (703) and sleeved on the outside of the connecting rod (704). The limiting ring (706) is threaded with a limiting bolt (708), and the outer wall of the mounting cylinder (703) is provided with an L-shaped groove (709) corresponding to the limiting bolt (708). The limiting bolt (708) is slidably connected in the groove (709).

7. A medical modified raw material mixer according to claim 5, characterized in that: The discharge pipe (701) is provided with a viewing window at the position corresponding to the discharge pipe (702).

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