A stirrer for experimental reaction flasks

Abstract

This utility model relates to the field of reaction vessel stirring technology, and in particular to an experimental reaction flask stirrer. It includes a base mounted on a test bench, a vertical drive component mounted on top of the base, and a reaction flask to be stirred placed on top of the vertical drive component. A constraint unit is sleeved on the outer side of the upper part of the vertical drive component, and the constraint unit is used to fit around the outer side of the reaction flask. Positioning locking components are installed on both sides of the constraint unit, and the positioning locking components are used to clamp and position the outer wall of the middle part of the reaction flask. This experimental reaction flask stirrer achieves rapid mixing of the internal liquid by rapidly rotating the reaction flask along with it, effectively improving the thorough and rapid mixing of the liquids undergoing chemical reactions inside the reaction flask. It eliminates the need to place a stirrer inside the reaction flask, effectively simplifying the operation process; the reaction flask can be placed directly inside the through-hole storage chamber.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel stirring technology, and in particular to a stirrer for experimental reaction flasks. Background Technology

[0002] Because of their excellent chemical stability and high-temperature resistance, laboratory reaction flasks can withstand the effects of various strong acids, strong bases, and organic solvents, ensuring the accuracy and safety of drug synthesis processes. Therefore, laboratory reaction flasks are commonly used in laboratories to synthesize and store new drug compounds; researchers can conduct chemical reactions in these flasks to explore optimal synthetic routes and conditions for drugs.

[0003] In order to ensure that the reaction effect meets the expected requirements during the chemical reaction in the experimental reaction flask, it is usually necessary to shake or stir the reaction flask. There are two main traditional methods: First, the operator shakes the reaction flask by hand. This method has poor mixing effect and poses certain safety hazards. Second, an electric stirrer is inserted into the reaction flask to achieve the purpose of quickly mixing the internal reactants. Because of its high stirring and mixing efficiency, it is also widely used.

[0004] A search revealed a stirring device and its stirring rod in prior art literature with patent application number CN201921347836.3. This device is mainly used to stir liquids in reaction flasks. Its main structure includes a stirring rod body, which is provided with a stirring plate for stirring the liquid. The stirring plate includes a fixed plate and a rotating plate. The side wall of the fixed plate is fixedly connected to the stirring rod body, and the rotating plate is rotatably connected to the stirring rod body. The rotation direction of the rotating plate is around the axis of the stirring rod body. The stirring rod body is fixedly provided with a limiting member to restrict the rotation of the rotating plate.

[0005] As can be seen, when using the above-mentioned stirring equipment to stir the inside of the reaction flask, it is necessary to go deep into the upper opening of the reaction flask, then fix it and stir. However, since the reaction flasks are of different sizes and their openings are generally small, this stirring structure is prone to collision with the mouth of the reaction flask when installing or removing it, making the operation difficult. In addition, when the stirrer swings, it is easy to collide with the inner wall of the upper constricted section of the reaction flask, which can easily cause the glass reaction flask to break.

[0006] Based on this, the present invention optimizes the design to address the problems existing in the stirring process of reaction flasks of different sizes in the prior art, and proposes a novel experimental reaction flask stirrer to better solve the problems existing in the prior art. Utility Model Content

[0007] To solve one of the aforementioned technical problems, the present invention provides the following technical solution: an experimental reaction flask stirrer, comprising a base mounted on a test bench, a vertical drive component mounted on the top of the base, the top of the vertical drive component for placing the reaction flask to be stirred, the reaction flask being coaxially arranged with the vertical drive component in the placed state, a constraint unit sleeved on the upper outer side of the vertical drive component, the constraint unit being used to fit onto the outer side of the current reaction flask, positioning locking components mounted on both sides of the constraint unit, the positioning locking components being used to cooperate in clamping and positioning the outer wall of the middle part of the current reaction flask, and when the vertical drive component is working, it drives the constraint unit and the current reaction flask to rotate rapidly.

[0008] In any of the above embodiments, preferably, the vertical drive unit includes a drive motor fixedly mounted on the top of the base, a connecting vertical shaft fixedly mounted on the top of the motor shaft of the drive motor, a heating plate fixedly mounted on the top of the connecting vertical shaft, and an electric heater electrically connected to the heating plate fixedly mounted in the bottom cavity of the heating plate. The electric heater is used to heat the heating plate, and the top of the heating plate is used to place the reaction flask to be stirred.

[0009] In any of the above embodiments, preferably, the constraint unit includes a constraint steel cylinder sleeved and installed on the upper outer side wall of the heating plate. The upper and lower ends of the constraint steel cylinder are both through-holes. The inner wall of the constraint steel cylinder abuts against the outer side wall of the heating plate. Through-hole long grooves are symmetrically arranged on the left and right sides of the constraint steel cylinder. The positioning locking member is installed inside each of the through-hole long grooves. A steel cylinder connecting lug is integrally formed at the bottom of the constraint steel cylinder. Each steel cylinder connecting lug is connected to a positioning component arranged below it. The center of the positioning component is fixedly installed on the outer side wall of the connecting vertical shaft. A through-hole storage cavity for placing the reaction bottle is provided at the center of the constraint steel cylinder.

[0010] In any of the above embodiments, it is preferred that limit keys are provided on the front and rear sides of the outer side wall of the heating plate, and limit grooves are provided on the front and rear sides of the inner side wall of the constraint steel cylinder, respectively, to slide and engage with the limit keys at their corresponding positions.

[0011] In any of the above embodiments, it is preferred that the positioning component includes a horizontally arranged central fixing plate, which is coaxially and fixedly installed on the lower outer side wall of the connecting vertical shaft. Vertical studs are fixedly installed on the top of the left and right sides of the central fixing plate, and the upper end of each vertical stud movably extends to the upper part of the steel cylinder connecting lug. Positioning lock nuts are threaded onto the outer side walls of the vertical studs at the upper and lower parts of the steel cylinder connecting lug, and the two positioning lock nuts cooperate to clamp the steel cylinder connecting lug.

[0012] In any of the above embodiments, preferably, the positioning and locking component includes a horizontally arranged horizontal screw, the inner end of which passes through the through-groove and extends into the interior of the through-storage cavity. A friction abutment block is fixedly installed at the inner end of the horizontal screw, the inner sidewall of which abuts against the outer sidewall of the reaction flask. A rotating handwheel is fixedly installed at the outer end of the horizontal screw. Fastening nuts are threaded onto the outer sidewalls of the horizontal screw on both sides of the through-storage cavity, and the two fastening nuts cooperate to clamp the sidewall of the constraint steel cylinder.

[0013] In any of the above solutions, it is preferred that each of the fastening nuts and the constraint steel cylinder can be magnetically fixed together.

[0014] In any of the above embodiments, it is preferred that the friction contact block is an arc-shaped rubber friction block, and the inner arc-shaped surface of the friction contact block abuts against the outer wall of the reaction flask.

[0015] In any of the above embodiments, it is preferred that a high-temperature resistant coating is sprayed onto the inner arc-shaped surface of each of the friction contact blocks.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The experimental reaction flask stirrer designed in this utility model uses the reaction flask to rotate rapidly during stirring, thereby achieving the purpose of rapidly mixing the internal liquids, effectively improving the thorough and rapid mixing of the liquids undergoing chemical reactions inside the reaction flask; there is no need to place a stirrer inside the reaction flask, effectively simplifying the operation process, and the reaction flask can be placed directly inside the through storage chamber.

[0018] 2. When the entire stirrer is stirring the reaction flask, it can rely on the adjustment of the positioning and locking parts on both sides to achieve the outer wall clamping and positioning of reaction flasks with different outer diameters, thereby ensuring its stability when driving the reaction flask to rotate.

[0019] 3. By controlling the position of the positioning component, the constraint unit can be adjusted relative to the top of the vertical drive component, thereby ensuring that the top of the vertical drive component is located at different heights through the storage cavity, realizing the constraint connection of the lower body of reaction bottles of different heights, and ensuring the stability of the reaction bottle after installation.

[0020] 4. The stirrer is highly versatile and can be adapted to reaction flasks of different outer diameters and heights, effectively reducing the difficulty of operation and expanding the scope of application of the stirrer. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the reaction flask of this utility model in its installed state.

[0023] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model.

[0024] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the constraint steel cylinder of this utility model.

[0027] In the diagram, 1. Base; 2. Reaction flask; 3. Drive motor; 4. Connecting vertical shaft; 5. Heating plate; 6. Electric heater; 7. Constraint steel cylinder; 701. Steel cylinder connecting lug; 8. Through-through long groove; 9. Through-through storage cavity; 10. Limit key; 11. Limit groove; 12. Central fixing plate; 13. Vertical stud; 14. Positioning lock nut; 15. Horizontal screw; 16. Friction abutment block; 17. Rotating handwheel; 18. Fastening nut. Detailed Implementation

[0028] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be construed as limiting the scope of protection of the present utility model. The specific structure of the present utility model is as follows: Figures 1-5 As shown in the image.

[0029] Example 1: An experimental reaction flask stirrer includes a base 1 mounted on a test bench. A vertical drive component is mounted on the top of the base 1. The top of the vertical drive component is used to place the reaction flask 2 to be stirred. The reaction flask 2 is coaxially arranged with the vertical drive component in the placed state. A constraint unit is sleeved on the upper outer side of the vertical drive component. The constraint unit is used to fit on the outer side of the current reaction flask 2. Positioning locking components are installed on both sides of the constraint unit. The positioning locking components are used to clamp and position the outer wall of the middle part of the current reaction flask 2. When the vertical drive component is working, it drives the constraint unit and the current reaction flask 2 to rotate rapidly.

[0030] The experimental reaction flask stirrer designed in this utility model can be directly installed on the current laboratory table. After installation, the height of the current constraint unit and the spacing between the two positioning locking parts can be pre-adjusted according to the size of the reaction flask 2 to be processed, so as to ensure that the reaction flask 2 can be stably placed into the through storage cavity 9. After placement, the reaction flask 2 is kept stable. Then, the two positioning locking parts are controlled to move closer to each other and clamp the outer wall of the current reaction flask 2, thus ensuring the overall stability of the reaction flask 2.

[0031] In any of the above embodiments, preferably, the vertical drive unit includes a drive motor 3 fixedly installed on the top of the base 1, a connecting vertical shaft 4 fixedly installed on the top of the motor shaft of the drive motor 3, a heating plate 5 fixedly installed on the top of the connecting vertical shaft 4, and an electric heater 6 electrically connected to the heating plate 5 fixedly installed in the bottom cavity of the heating plate 5. The electric heater 6 is used to heat the heating plate 5, and the top of the heating plate 5 is used to place the reaction flask 2 to be stirred.

[0032] The vertical drive unit serves as the power source for the entire stirrer. During operation, it relies on the fixed drive motor 3 to drive the connecting vertical shaft 4 to rotate. As the connecting vertical shaft 4 rotates, it drives the heating plate 5 mounted on it to rotate. Simultaneously, the reaction flask 2 placed on the heating plate 5 and the constraint unit sleeved on the outside of the reaction flask 2 can also rotate rapidly. This ensures that the liquid inside the reaction flask 2 is quickly mixed and stirred by the rotational force during high-speed rotation. Controlling the rotational speed of the drive motor 3 can adjust the mixing effect.

[0033] In any of the above embodiments, preferably, the constraint unit includes a constraint steel cylinder 7 sleeved and installed on the upper outer side wall of the heating plate 5. The upper and lower ends of the constraint steel cylinder 7 are both through-holes. The inner wall of the constraint steel cylinder 7 abuts against the outer side wall of the heating plate 5. Through-hole long grooves 8 are symmetrically arranged on the left and right sides of the constraint steel cylinder 7. The positioning locking member is installed inside each of the through-hole long grooves 8. A steel cylinder connecting lug 701 is integrally formed at the bottom of the constraint steel cylinder 7. Each steel cylinder connecting lug 701 is connected to the positioning component arranged below it. The center of the positioning component is fixedly installed on the outer side wall of the connecting vertical shaft 4. The center of the constraint steel cylinder 7 is provided with a through-hole storage cavity 9 for placing the reaction bottle 2.

[0034] It should be noted that during installation, the entire constraint unit relies on the constraint steel cylinder 7 being sleeved on the outside of the reaction bottle 2 as a limiting constraint. At the bottom of the constraint steel cylinder 7, the steel cylinder connecting lug 701 is used to lock and position it with the positioning component, thereby ensuring the positioning of the entire constraint steel cylinder 7 in the height direction. This allows for the change of the depth of the through storage cavity 9 on the upper part of the entire heating plate 5, which facilitates the constraint and positioning of the bottle body of the reaction bottle 2 at different heights.

[0035] Considering the need for mid-position clamping of the outer walls of bottles of different heights, a through-groove 8 is provided to allow adjustment of the height of the positioning locking element in different height directions, thereby ensuring its stability in the height direction when clamped using the positioning locking element.

[0036] In any of the above embodiments, it is preferred that limit keys 10 are provided on the front and rear sides of the outer side wall of the heating plate 5, and limit grooves 11 are provided on the front and rear sides of the inner side wall of the constraint steel cylinder 7, which slide and cooperate with the limit keys 10 at their corresponding positions.

[0037] To further ensure that the heating plate 5 rotates with the drive motor 3 and drives the constraint steel cylinder 7 to rotate as well, key connections are provided on both sides to ensure the relative fixation and consistency of the movement state between the constraint steel cylinder 7 and the heating plate 5 during rotation.

[0038] In any of the above embodiments, preferably, the positioning component includes a horizontally arranged central fixing plate 12, which is coaxially and fixedly installed on the lower outer side wall of the connecting vertical shaft 4. Vertical studs 13 are fixedly installed on the top of the left and right sides of the central fixing plate 12, and the upper end of each vertical stud 13 extends movably to the upper part of the steel cylinder connecting lug 701. Positioning locking nuts 14 are threaded onto the outer side walls of the vertical studs 13 at the upper and lower parts of the steel cylinder connecting lug 701, respectively. The two positioning locking nuts 14 cooperate to clamp the steel cylinder connecting lug 701.

[0039] Example 2: Compared with Example 1, this example also includes the following technical features:

[0040] In any of the above embodiments, preferably, the positioning and locking component includes a horizontally arranged horizontal screw 15, the inner end of which passes through the through slot 8 and extends into the interior of the through storage cavity 9. A friction abutment block 16 is fixedly installed at the inner end of the horizontal screw 15, and the inner sidewall of the friction abutment block 16 abuts against the outer sidewall of the reaction bottle 2. A rotating handwheel 17 is fixedly installed at the outer end of the horizontal screw 15. Fastening nuts 18 are threaded onto the outer sidewalls of the horizontal screw 15 on both sides of the through storage cavity 9, and the two fastening nuts 18 cooperate to clamp the sidewalls of the constraint steel cylinder 7.

[0041] During installation, the positioning locking component uses the fastening nuts 18 on both sides to position the current horizontal screw 15. At the same time, the friction abutment block 16 at the inner end of the horizontal screw 15 presses against the outer wall of the current reaction bottle 2, thereby ensuring the clamping effect on the reaction bottle 2. The inward and outward displacement of the horizontal screw 15 can be adjusted by rotating the current rotating handwheel 17.

[0042] In addition, when clamping the current reaction flask 2, the current fastening nuts 18 can be pre-fixed and bonded to the side walls of the constraint steel cylinder 7 on both sides of the through groove 8 as needed to ensure the firmness of its positioning.

[0043] In any of the above solutions, it is preferred that each of the fastening nuts 18 and the constraint steel cylinder 7 can be magnetically fixed together.

[0044] The use of magnetic fixing can effectively ensure the firmness of each fastening nut 18 and guarantee the positioning effect and reliability of the entire positioning locking part at the height position.

[0045] In any of the above embodiments, it is preferred that the friction abutment block 16 is an arc-shaped rubber friction block, and the inner arc-shaped surface of the friction abutment block 16 abuts against the outer wall of the reaction flask 2.

[0046] The friction contact block 16, made of rubber, ensures its friction effect when pressing against the reaction bottle 2, thus guaranteeing the positioning and pressing effect.

[0047] In any of the above embodiments, it is preferred that a high-temperature resistant coating is sprayed onto the inner arc-shaped surface of each of the friction contact blocks 16. The high-temperature resistant coating can ensure safety when used at high temperatures.

[0048] Specific working principle: The experimental reaction bottle stirrer can be directly installed on the current laboratory table; after installation, the height of the current constraint unit and the interval between the two positioning locking parts can be pre-adjusted according to the size of the reaction bottle 2 that needs to be processed, so as to ensure that the reaction bottle 2 can be smoothly placed into the through storage cavity 9, and the reaction bottle 2 remains stable after placement.

[0049] Then, control the two positioning locking parts to move closer to each other and clamp the outer wall of the current reaction bottle 2, thus ensuring the overall stability of the reaction bottle 2.

[0050] In summary, the experimental reaction flask stirrer achieves rapid mixing of the internal liquid by rapidly rotating the reaction flask 2 during stirring, effectively improving the thorough and rapid mixing of the liquid undergoing the chemical reaction inside the reaction flask 2. It eliminates the need to place the stirrer inside the reaction flask 2, simplifying the operation process; the reaction flask 2 can be directly placed inside the through-hole storage chamber 9. The stirrer can securely position the reaction flasks 2 with different outer diameters by adjusting the positioning locking components on both sides, ensuring stability during rotation. Controlling the position of the positioning components allows adjustment of the constraint unit relative to the top of the vertical drive component, ensuring the top of the vertical drive component is at different heights within the through-hole storage chamber 9. This constrains the lower body of the reaction flasks 2 with different heights, ensuring stability after installation.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.

[0052] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. An experimental reaction flask stirrer characterized by: The device includes a base mounted on a test bench, with a vertical drive unit installed on top of the base. The top of the vertical drive unit is used to place the reaction flask to be stirred. The reaction flask is coaxially arranged with the vertical drive unit in the placed state. A constraint unit is sleeved on the upper outer side of the vertical drive unit. The constraint unit is used to fit around the outer side of the current reaction flask. Positioning locking components are installed on both sides of the constraint unit. The positioning locking components are used to clamp and position the outer wall of the middle part of the current reaction flask. When the vertical drive unit is working, it drives the constraint unit and the current reaction flask to rotate rapidly.

2. An experimental reaction flask stirrer according to claim 1, characterized in that: The vertical drive unit includes a drive motor fixedly installed on the top of the base, a connecting vertical shaft fixedly installed on the top of the motor shaft of the drive motor, a heating plate fixedly installed on the top of the connecting vertical shaft, and an electric heater electrically connected to the heating plate fixedly installed in the bottom cavity of the heating plate. The electric heater is used to heat the heating plate, and the top of the heating plate is used to place the reaction flask to be stirred.

3. An experimental reaction flask stirrer according to claim 2, wherein: The constraint unit includes a constraint steel cylinder sleeved on the upper outer side wall of the heating plate. Both ends of the constraint steel cylinder are through-holes. The inner wall of the constraint steel cylinder abuts against the outer side wall of the heating plate. Symmetrical through-grooves are provided on the left and right sides of the constraint steel cylinder. The positioning locking component is installed inside each through-grooves. A steel cylinder connecting lug is integrally formed at the bottom of the constraint steel cylinder. Each steel cylinder connecting lug is connected to a positioning component provided below it. The center of the positioning component is fixedly installed on the outer side wall of the connecting vertical shaft. A through-hole storage cavity for placing a reaction bottle is provided at the center of the constraint steel cylinder.

4. An experimental reaction flask stirrer according to claim 3, wherein: Limiting keys are provided on the front and rear sides of the outer wall of the heating plate, and limiting grooves are provided on the front and rear sides of the inner wall of the constraint steel cylinder, respectively, to slide and engage with the limiting keys at their corresponding positions.

5. An experimental reaction flask stirrer according to claim 4, wherein: The positioning assembly includes a horizontally arranged central fixing plate, which is coaxially and fixedly installed on the lower outer side wall of the connecting vertical shaft. Vertical studs are fixedly installed on the top of the left and right sides of the central fixing plate, and the upper end of each vertical stud extends movably to the upper part of the steel cylinder connecting lug. Positioning lock nuts are threaded onto the outer side walls of the vertical studs at the upper and lower parts of the steel cylinder connecting lug, and the two positioning lock nuts cooperate to clamp the steel cylinder connecting lug.

6. An experimental reaction flask stirrer according to claim 5, wherein: The positioning and locking component includes a horizontally arranged horizontal screw, the inner end of which passes through the through slot and extends into the interior of the through storage cavity. A friction abutment block is fixedly installed at the inner end of the horizontal screw, and the inner sidewall of the friction abutment block abuts against the outer sidewall of the reaction flask. A rotating handwheel is fixedly installed at the outer end of the horizontal screw. Fastening nuts are threaded onto the outer sidewalls of the horizontal screw on both sides of the through storage cavity. The two fastening nuts cooperate to clamp the sidewalls of the constraint steel cylinder.

7. An experimental reaction flask stirrer according to claim 6, characterised in that: Each of the fastening nuts and the constraint steel cylinder can be magnetically fixed together.

8. An experimental reaction flask stirrer according to claim 7, characterised in that: The friction abutting block adopts an arc-shaped rubber friction block, and the inner arc-shaped surface of the friction abutting block abuts on the outer sidewall of the reaction bottle.

9. An experimental reaction flask stirrer according to claim 8, wherein: A high-temperature-resistant coating is sprayed on the inner arc-shaped surface of each friction abutting block.

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