Improved chemical small-scale test stirring device
The modularly designed chemical pilot-scale stirring device solves the problems of existing devices requiring multiple operators and limited blade selection, enabling rapid installation by a single person, adapting to the stirring of substances of different viscosities, improving experimental efficiency and accuracy, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN FENGCHUAN CHEM REAGENT TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
Existing chemical pilot-scale stirring devices require multiple operators to disassemble the sealing cover, have limited blade selection that cannot be based on viscosity, and are difficult to scrape the wall, resulting in biased experimental results and low efficiency.
A modular chemical pilot-scale stirring device was designed, including a detachable stirring mechanism and a reaction vessel. It adopts arc-shaped scraper blades and replaceable blades, and the motor protective shell is tightly locked to the vessel, enabling quick installation and disassembly by a single person, and adapting to the stirring needs of substances with different viscosities.
It improves experimental efficiency and accuracy, reduces space occupation, lowers costs, ensures a clean and safe experimental environment, and avoids deviations in experimental results.
Smart Images

Figure CN224221167U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical equipment technology, and in particular to an improved chemical small-scale stirring device. Background Technology
[0002] Existing technology CN219502558U discloses a wall-scraping agitator for small-scale chemical experiments. In this agitator, a scraper scrapes the inner wall of the agitator body. A pressure plate and connecting rod move a second scraper downwards, allowing the scraper and agitator plate to pass through the groove and the second groove respectively, thus scraping and collecting the reactants adhering to the scraper and agitator plate back into the agitator body for continued reaction. After the pressure plate is released, the second scraper moves back to its original position under the action of a return spring and a return rod, and the stirring reaction continues, achieving the purpose of scraping and collecting the adhering reactants.
[0003] However, the device disclosed in the patent document has fixed settings on both sides, which means that the sealing cover of the device needs to be operated by two or more experimental personnel during disassembly, which is inconvenient. Furthermore, due to the setting of the pressure plate at the top, the selection of the stirrer blades is limited, and it is impossible to select according to the viscosity of the stirred substance, which leads to deviations in experimental results. In addition, due to the setting of the spring and the need to manually press down to scrape the inside, it is difficult to scrape the wall when the viscosity is high.
[0004] Therefore, a new type of pilot-scale stirring device needs to be designed. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an improved chemical small-scale stirring device.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] An improved chemical small-scale stirring device includes a stirring mechanism and a reaction vessel. The stirring mechanism is detachably installed on the reaction vessel, which can hold the raw material to be stirred. The stirring mechanism can stir the raw material in the reaction vessel.
[0008] The reaction vessel includes a container body and a container cavity. The container body is arranged vertically and has a hollow interior with an open top. The hollow interior of the container body forms the container cavity, which is arranged vertically and can hold the chemical raw materials to be stirred.
[0009] The stirring mechanism includes a motor protective shell, a motor, a wall scraping component, and a stirring component. The motor is arranged vertically, and its working shaft is arranged vertically downwards. The motor can drive the wall scraping component and the stirring component to rotate, thereby performing the corresponding stirring operation. The motor protective shell is coaxially and detachably connected to the motor, and the motor is located inside the motor protective shell. The motor protective shell and the motor are both connected and arranged above the container body. The wall scraping component and the stirring component are both arranged vertically and are both located inside the container cavity.
[0010] The wall scraping component is detachably and coaxially connected to the upper part of the motor working shaft. The wall scraping component is also tightly and slidably connected to the inner wall of the container cavity. The wall scraping component can perform a tight wall scraping operation on the inner surface of the container cavity. The top of the stirring component is detachably connected to the lower part of the motor working shaft. The stirring component can stir the material inside the reactor under the drive of the motor working shaft.
[0011] Furthermore, the wall scraping component includes a wall scraping rotating shaft, a wall scraping blade, and a connecting rod. The rotating shaft is arranged vertically and is detachably and fixedly connected to the upper part of the motor's working shaft. The wall scraping blade is arranged vertically and fits tightly against the inner surface of the container cavity. The connecting rod is arranged horizontally, and the wall scraping blade is symmetrically and vertically arranged at both ends of the horizontal rod. The connecting rod connects the rotating shaft and the wall scraping blade together.
[0012] Furthermore, the scraper blade is configured in an arc shape.
[0013] Furthermore, the stirring component includes a stirring rotating shaft and blades. The stirring rotating shaft is arranged in a vertical direction, and the top of the stirring rotating shaft is coaxially and detachably connected to the lower part of the working shaft of the motor. The blades are arranged in a horizontal direction and are coaxially and detachably connected to the rotating shaft.
[0014] Furthermore, the motor protective shell includes a protective shell body, a motor hole, and a locking protrusion. The diameter of the protective shell body is larger than the diameter of the container body. The lower surface of the protective shell body is coaxially and detachably connected to the upper surface of the container body. The motor hole is coaxially disposed on the protective shell body. The working shaft of the motor extends downward through the motor hole and is disposed in the container cavity. The locking protrusion is provided at the edge of the protective shell body, and the protective shell body can be tightly locked and connected to the container body through the locking protrusion.
[0015] Furthermore, the reaction vessel is a beaker.
[0016] The advantages and positive effects of this utility model are as follows:
[0017] 1. This utility model, through its modular design, enables rapid installation and disassembly, requiring only a single operator, thus overcoming the drawbacks of existing technologies that require multiple personnel and significantly improving experimental efficiency. The modular design allows for timely replacement and cleaning of internal components, preventing residual substances from affecting subsequent experiments. The structural connection between the reaction vessel and stirring mechanism facilitates use, reduces space requirements, and is more user-friendly for experimental personnel.
[0018] 2. This utility model adopts a modular design for the stirring component, and the blades are detachable and replaceable. The blades can be flexibly selected according to the viscosity of different reactants, avoiding experimental result deviations caused by blade mismatch and improving experimental accuracy.
[0019] 3. This utility model uses an arc-shaped scraper blade that fits tightly against the inner wall of the reaction vessel, reducing resistance and space occupation during rotation, while enhancing the scraping effect on high-viscosity substances, ensuring that the reactants are fully mixed and leave no residue, and reducing experimental costs.
[0020] 4. This utility model effectively suppresses liquid spillage caused by stirring vibration through a tight-fitting structure between the motor protective shell and the container body, and the design of the protective shell having a diameter larger than that of the container body, thus ensuring a clean experimental environment and safe operation.
[0021] 5. The reaction vessel in this invention is a standard beaker, which is easy to purchase and replace; the detachable design of each component facilitates cleaning and maintenance, extends the service life of the device, and reduces the cost of experimental consumables. Attached Figure Description
[0022] Figure 1 This is a front-view perspective three-dimensional schematic diagram of a structural connection according to this utility model;
[0023] Figure 2 for Figure 1 A front-view stereoscopic diagram of a structural connection of a reaction vessel (omitted).
[0024] Figure 3 for Figure 2 A front-view perspective three-dimensional schematic diagram of a structural connection of a motor protective shell omitted in the middle;
[0025] Figure 4 for Figure 2 A three-dimensional diagram of the structural connection of a motor protective shell, viewed from below.
[0026] Figure 5 for Figure 1 A front-view three-dimensional schematic diagram of a structural connection of a reaction vessel;
[0027] Figure 6 for Figure 2A front-view perspective three-dimensional schematic diagram of a structural connection of a stirring component;
[0028] Figure 7 for Figure 2 A front-view perspective three-dimensional schematic diagram of a structural connection of a wall scraping component. Detailed Implementation
[0029] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.
[0030] Unless otherwise specified, the raw materials used in this invention are all commercially available products. Unless otherwise specified, the methods used in this invention are conventional methods in the field. The quantities of all substances used in this invention are conventional usage quantities. Structures and connections not described in detail in this invention can be understood as conventional technical means in the field.
[0031] An improved chemical small-scale stirring device, such as Figures 1 to 7 As shown, the device includes a stirring mechanism 1 and a reaction vessel 2. The stirring mechanism is detachably installed on the reaction vessel, which can hold raw materials to be stirred. The stirring mechanism can stir the raw materials to be stirred in the reaction vessel.
[0032] The reaction vessel includes a container body 2-1 and a container cavity 2-2. The container body is arranged vertically and has a hollow interior with an open top. The hollow interior of the container body forms a container cavity, which is arranged vertically and can hold the reaction chemical raw materials to be stirred.
[0033] The stirring mechanism includes a motor protective shell 3, a motor 4, a wall scraping component 5, and a stirring component 6. The motor is arranged vertically, and its working shaft is arranged vertically downwards. The motor can drive the wall scraping component and the stirring component to rotate, thereby performing the corresponding stirring operation. The motor protective shell is coaxially and detachably connected to the motor, and the motor is located inside the motor protective shell. The motor protective shell can protect the motor from impact damage. The motor protective shell and the motor are both connected and arranged above the container body. The wall scraping component and the stirring component are both arranged vertically and are both located inside the container cavity.
[0034] The wall scraping component is detachably and coaxially connected to the upper part of the motor working shaft. The wall scraping component is also tightly and slidably connected to the inner wall of the container cavity. The wall scraping component can perform a tight wall scraping operation on the inner surface of the container cavity, preventing the reactants from sticking to the inner surface of the reaction cavity. The top of the stirring component is detachably connected to the lower part of the motor working shaft. Driven by the motor working shaft, the stirring component can stir the substances inside the reactor, allowing them to be fully mixed / reacted.
[0035] In use, the device combines the motor protective shell and the motor, then connects the wall scraping component and the stirring component to the working shaft of the motor to form a stirring mechanism. The required substances for stirring / reaction are then filled into the container cavity. The stirring mechanism is then assembled with the reaction container, and the device is started. While the stirring component mixes the substances in the container cavity, the wall scraping mechanism simultaneously scrapes the inner surface of the container cavity, resulting in more thorough stirring and preventing the substances from sticking to the inner cavity. This facilitates cleaning by experimental personnel, improves experimental accuracy, and reduces experimental costs.
[0036] This invention, through its modular design and detachable connection structure of multiple components, enables rapid installation and disassembly, requiring only a single operator. This overcomes the drawback of existing technologies that require multiple people, significantly improving experimental efficiency. The modular design also allows for timely replacement and cleaning of internal components, preventing residual substances from affecting subsequent experiments. The structural connection between the reaction vessel and stirring mechanism facilitates use, reduces space requirements, and is more user-friendly for researchers.
[0037] In this embodiment, the wall scraping component includes a wall scraping rotating shaft 5-1, a wall scraping blade 5-2, and a connecting rod 5-3. The rotating shaft is arranged vertically and is detachably and fixedly connected to the upper part of the motor's working shaft. The wall scraping blade is arranged vertically and fits tightly against the inner surface of the container cavity. The connecting rod is arranged horizontally, and the wall scraping blade is symmetrically and vertically arranged at both ends of the horizontal direction. The connecting rod connects the rotating shaft and the wall scraping blade together, so that as the wall scraping rotating shaft rotates, the connecting rod drives the wall scraping blade to rotate together with the rotating shaft.
[0038] Preferably, the scraper blade is configured in an arc shape. The arc shape can reduce the impact of the scraper blade on the stirring process inside the reaction chamber and its volume ratio in the reaction chamber, and improve the scraping efficiency.
[0039] In this embodiment, the stirring component includes a stirring rotating shaft 6-1 and blades 6-2. The stirring rotating shaft is arranged vertically, and its top is coaxially and detachably connected to the lower part of the motor's working shaft. The blades are arranged horizontally and coaxially mounted and detachably connected to the rotating shaft. This allows the stirring component to stir the substances in the reaction cavity. The detachable design allows operators to replace the blades according to different material viscosities, meeting various usage requirements, expanding the application range of the device, reducing production costs, and improving work efficiency.
[0040] In this embodiment, the motor protective shell includes a protective shell body 3-1, a motor hole 3-2, and a locking protrusion 3-3. The diameter of the protective shell body is larger than the diameter of the container body. The lower surface of the protective shell body is coaxially and detachably connected to the upper surface of the container body. The motor hole is coaxially disposed on the protective shell body. The working shaft of the motor extends downward through the motor hole and is disposed in the container cavity. The locking protrusion is provided at the edge of the protective shell body. The protective shell body can be tightly locked and connected to the container body through the locking protrusion, which prevents the reactants from overflowing the container due to the vibration of stirring during the stirring process and improves the stability of the device.
[0041] In this embodiment, the reaction vessel is a beaker, which is convenient for experimental personnel to use.
[0042] Although embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations, and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments.
Claims
1. An improved chemical small-scale test stirring device, characterized in that: The device includes a stirring mechanism and a reaction vessel. The stirring mechanism is detachably installed on the reaction vessel, which can hold raw materials to be stirred. The stirring mechanism can stir the raw materials to be stirred in the reaction vessel. The reaction vessel includes a container body and a container cavity. The container body is arranged vertically and has a hollow interior with an open top. The hollow interior of the container body forms the container cavity, which is arranged vertically and can hold the chemical raw materials to be stirred. The stirring mechanism includes a motor protective shell, a motor, a wall scraping component, and a stirring component. The motor is arranged vertically, and its working shaft is arranged vertically downwards. The motor can drive the wall scraping component and the stirring component to rotate, thereby performing the corresponding stirring operation. The motor protective shell is coaxially and detachably connected to the motor, and the motor is located inside the motor protective shell. The motor protective shell and the motor are both connected and arranged above the container body. The wall scraping component and the stirring component are both arranged vertically and are both located inside the container cavity. The wall scraping component is detachably and coaxially connected to the upper part of the motor working shaft. The wall scraping component is also tightly and slidably connected to the inner wall of the container cavity. The wall scraping component can perform a tight wall scraping operation on the inner surface of the container cavity. The top of the stirring component is detachably connected to the lower part of the motor working shaft. The stirring component can stir the material inside the reactor under the drive of the motor working shaft.
2. The apparatus according to claim 1, characterized in that: The wall scraping component includes a wall scraping rotating shaft, a wall scraping blade, and a connecting rod. The rotating shaft is arranged vertically and is detachably and fixedly connected to the upper part of the motor's working shaft. The wall scraping blade is arranged vertically and fits tightly against the inner surface of the container cavity. The connecting rod is arranged horizontally, and the wall scraping blade is symmetrically and vertically arranged at both ends of the horizontal direction of the connecting rod. The connecting rod connects the rotating shaft and the wall scraping blade together.
3. The apparatus according to claim 2, characterized in that: The scraper blade is designed to be arc-shaped.
4. The apparatus according to claim 1, characterized in that: The stirring component includes a stirring rotating shaft and blades. The stirring rotating shaft is arranged vertically, and its top is coaxially and detachably connected to the lower part of the motor's working shaft. The blades are arranged horizontally and are coaxially and detachably connected to the rotating shaft.
5. The apparatus according to claim 1, characterized in that: The motor protective shell includes a protective shell body, a motor hole, and a locking protrusion. The diameter of the protective shell body is larger than the diameter of the container body. The lower surface of the protective shell body is coaxially and detachably connected to the upper surface of the container body. The motor hole is coaxially located on the protective shell body. The working shaft of the motor extends downward through the motor hole and is located in the container cavity. The locking protrusion is provided at the edge of the protective shell body, and the protective shell body can be tightly locked and connected to the container body through the locking protrusion.
6. The apparatus according to claim 1, characterized in that: The reaction vessel is a beaker.