Temperature control magnetic stirring device

Abstract

The temperature control magnetic stirring device comprises a conical flask and a main pipe, the main pipe is communicated with a top opening of the conical flask in an inserted mode, the outer side of the main pipe is communicated with a branch pipe extending outwards in an inclined mode, and a temperature control probe extending into the conical flask is arranged in the middle of the main pipe in a penetrating mode. A bearing assembly for supporting the temperature control probe is arranged on the outer side of the main pipe; a fixing lug is arranged outside the main pipe, the bearing assembly comprises a supporting rod which vertically penetrates through the fixing lug and is in clearance fit with the fixing lug, and a gland is fixed to the position, above the fixing lug, of the outer side of the supporting rod. The device has the beneficial effects that the main pipe serves as a temperature control plug to extend into a pipeline, and the branch pipe serves as a condensation reflux pipeline, so that the use requirement of a reflux extraction method is met, and the practicability is high; the top opening of the main pipe can be sealed through the gland, and use is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of pharmaceutical and chemical equipment, and specifically relates to a temperature-controlled magnetic stirring device. Background Art

[0002] The magnetic stirrer is a commonly used experimental instrument, mainly used for stirring or heating and stirring low-viscosity liquids or solid-liquid mixtures. Its basic principle is to use the principle of magnetic field that like charges repel and opposite charges attract, and use the magnetic field to drive the magnetic stirrer placed in the container to rotate in a circle, thereby achieving the purpose of stirring the liquid. In conjunction with the heating temperature control system, the sample temperature can be heated and controlled according to specific experimental requirements, maintaining the temperature conditions required by the experimental conditions, and ensuring that the liquid mixing meets the experimental requirements.

[0003] Most of the current magnetic stirring containers are conical flasks, but the current conical flasks need to insert a temperature control probe from the bottle mouth during use. When using the reflux extraction method to separate and purify experimental components, it is also necessary to seal the bottle mouth and connect an external condenser to distill out the volatile solvent and then cool it down and reflux it by the condenser. However, after the temperature control probe is inserted into the bottle mouth of the existing conical flask, the bottle mouth cannot be sealed and an external condenser pipeline cannot be connected, which is inconvenient to use. Summary of the invention

[0004] The purpose of the utility model is to provide a temperature-controlled magnetic stirring device in order to solve the above-mentioned problem. The main pipe is used as a temperature-controlled plug to extend into the pipeline, and the branch pipe is used as a condensation reflux pipeline, which meets the use requirements of the reflux extraction method and has strong practicality. In addition, the top of the main pipe can be closed by a pressure cover, which is more convenient to use. See the following description for details.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a temperature-controlled magnetic stirring device, comprising a conical flask and a main pipe, wherein the main pipe is plugged and connected to the top of the conical flask, the outside of the main pipe is connected to a branch pipe extending outwardly in an inclined manner, a temperature control probe extending into the conical flask is penetrated in the middle of the main pipe, and a supporting component supporting the temperature control probe is arranged on the outside of the main pipe;

[0007] A fixing ear is arranged on the outside of the main pipe, and the supporting assembly includes a support rod which vertically penetrates the fixing ear and is gap-matched with the fixing ear. A pressure cover is fixed on the outside of the support rod above the fixing ear, and a receiving groove and a sealing groove are transversely arranged on the bottom of the pressure cover. Both the receiving groove and the sealing groove are circular groove structures that can be pressed onto the top of the main pipe. A support tube for accommodating the temperature control probe is fixed on the top side of the receiving groove, and the support tube is a rubber cylinder tightened to the outside of the temperature control probe.

[0008] The temperature-controlled magnetic stirring device is used. When in use, the sealing part at the bottom end of the main pipe is inserted into the top of the conical flask, the bottom of the main pipe is connected with the conical flask through the sealing part, and the conical flask is placed on a magnetic stirrer and the material in the conical flask is stirred and heated with the stirring rod; the volatile solvent carries the required extraction substance into the branch pipe along the main pipe, and is cooled by the condensed water in the condenser through the middle section of the branch pipe, the solvent condenses and refluxes, and the required extraction substance is output outward along the top section to complete the separation; when the top of the main pipe needs to be opened to add or pour out the reactant, the knob is pulled upward to drive the support rod and the pressure cover to move upward as a whole, the pressure cover is separated from the top of the main pipe, and then the pressure cover is opened. Pull the temperature control probe upward with the support of the support tube on the top side of the cover, and move the bottom end of the temperature control probe between the gland and the top opening of the main pipe. At this time, turn the knob to drive the gland, the support tube and the temperature control probe to rotate around the support rod, and rotate the gland to a position that is offset from the top opening of the main pipe. At this time, the top opening of the main pipe is exposed to facilitate pouring materials along the main pipe. When it is necessary to take out the temperature control probe and close the top opening of the main pipe, move the bottom end of the temperature control probe between the gland and the top opening of the main pipe, and rotate the gland to rotate the sealing groove to the corresponding top opening of the main pipe, and then push the positioning plate downward through the spring to ensure that the sealing groove of the gland is pressed tightly to the top opening of the main pipe for sealing, and the temperature control probe is rotated to the outside of the conical flask by the gland for support and placement.

[0009] Preferably, a positioning plate is fixed to the bottom end of the support rod, a spring is sleeved on the outside of the support rod on the top side of the positioning plate, and the top side of the spring is pressed against the bottom surface of the fixing ear.

[0010] Preferably, a knob is fixed to the top end of the support rod, and the compression stroke of the spring is greater than the depth of the sealing groove and the accommodating groove.

[0011] Preferably, a cylindrical sealing portion is coaxially fixed to the outer circumference of the bottom end of the main pipe, the sealing portion vertically extends into the inner side of the top opening of the conical flask, and the sealing portion is interference fit with the inner wall of the conical flask.

[0012] Preferably, a circular rotating ring is coaxially fixed to the outer circumference of the top end of the sealing portion, and a plurality of groups of arc-shaped groove-shaped holding grooves are arranged around the outer circumference of the rotating ring.

[0013] Preferably, the branch pipe comprises a bottom section connected to the main pipe, the top of the bottom section is connected to a spirally extending middle section, the top of the middle section is connected to a vertically extending top section, and a condenser is arranged outside the branch pipe.

[0014] Preferably, the condenser is a cylindrical structure sealed and arranged outside the middle section, the outside of the bottom of the condenser is connected to a water inlet pipe, and the outside of the top of the condenser is connected to a water outlet pipe.

[0015] Preferably, a stirring bar is arranged inside the conical flask.

[0016] The beneficial effects are as follows: the utility model seals and sets a main pipe at the top of the conical bottle, connects the obliquely extending branch pipe outside the main pipe, extends the main pipe into the pipe as a temperature control plug, and uses the branch pipe as a condensation reflux pipe, so as to meet the use requirements of the reflux extraction method and has strong practicality;

[0017] In addition, a supporting component for supporting the temperature control probe is arranged on the outside of the top of the main pipe. When idle, the top of the main pipe can be closed by a pressure cover, and the temperature control probe can be supported and placed on the outside of the conical flask, avoiding the problem of impurities easily adhering to the temperature control probe when it is taken out and placed randomly, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is the main structural diagram of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure splitting of the utility model;

[0022] Figure 4 It is a schematic diagram of the partial structure split in another direction of the utility model;

[0023] Figure 5 It is a front cross-sectional view of the utility model.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Conical flask; 2. Main pipe; 201. Sealing part; 202. Rotating ring; 203. Fixed ear; 3. Branch pipe; 301. Bottom section; 302. Middle section; 303. Top section; 4. Support assembly; 401. Support rod; 402. Pressure cover; 403. Support tube; 404. Sealing groove; 405. Positioning plate; 406. Spring; 407. Receiving groove; 408. Knob; 5. Temperature control probe; 6. Condenser; 601. Water inlet pipe; 602. Water outlet pipe; 7. Stirring bar. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 As shown, the utility model provides a temperature-controlled magnetic stirring device, including a conical flask 1 and a main pipe 2, the main pipe 2 is plugged and connected to the top of the conical flask 1, and is used as a temperature control probe 5 insertion channel, the outside of the main pipe 2 is connected to a branch pipe 3 extending outwardly and obliquely, and is used as a condenser, the middle of the main pipe 2 is penetrated by a temperature control probe 5 extending into the conical flask 1, the temperature control probe 5 is a temperature measuring component of the magnetic stirrer, which is an existing device in the field and is not described here, and a supporting component 4 for supporting the temperature control probe 5 is arranged on the outside of the main pipe 2;

[0028] A fixing ear 203 is arranged on the outside of the main pipe 2, and the supporting assembly 4 includes a support rod 401 which vertically penetrates the fixing ear 203 and is gap-matched with the fixing ear 203, and a pressure cover 402 is fixed on the outside of the support rod 401 above the fixing ear 203, and a receiving groove 407 and a sealing groove 404 are transversely arranged on the bottom of the pressure cover 402. Both the receiving groove 407 and the sealing groove 404 are circular groove structures that can be pressed onto the top of the main pipe 2, and a support tube 403 for accommodating the temperature control probe 5 to pass through is fixed on the top side of the receiving groove 407. The support tube 403 is a rubber cylinder tightened to the outside of the temperature control probe 5 to ensure that the support tube 403 can stably support the temperature control probe 5 so as to keep the height position of the temperature control probe 5 fixed.

[0029] As an optional embodiment, a positioning plate 405 is fixed to the bottom end of the support rod 401, and a spring 406 is sleeved on the outside of the support rod 401 on the top side of the positioning plate 405. The top side of the spring 406 is pressed against the bottom surface of the fixing ear 203, and the positioning plate 405 is pressed downward by the spring 406 to ensure that the gland 402 can be pressed to the top opening of the main pipe 2 to close it. A knob 408 is fixed to the top end of the support rod 401, and the compression stroke of the spring 406 is greater than the depth of the sealing groove 404 and the accommodating groove 407, ensuring that the upward pulling of the knob 408 can drive the support rod 401 to support the gland 402 to separate it from the top opening of the main pipe 2;

[0030] A cylindrical sealing part 201 is coaxially fixed to the outer circumference of the bottom end of the main pipe 2. The sealing part 201 is a rubber sleeve structure. The sealing part 201 vertically extends into the inner side of the top opening of the conical flask 1, and the sealing part 201 is interference fit with the inner wall of the conical flask 1 to ensure that the sealing part 201 can plug and seal the top opening of the main pipe 2. A circular rotating ring 202 is coaxially fixed to the outer circumference of the top end of the sealing part 201. A plurality of groups of arc-shaped groove-shaped gripping grooves are arranged around the outer circumference of the rotating ring 202 to improve the gripping stability of the sealing part 201.

[0031] The branch pipe 3 includes a bottom section 301 connected to the main pipe 2, the top of the bottom section 301 is connected to a spirally extended middle section 302, the top of the middle section 302 is connected to a vertically extended top section 303, a condenser 6 is arranged on the outside of the branch pipe 3, the condenser 6 is a cylindrical structure sealed and arranged on the outside of the middle section 302, the outside of the bottom of the condenser 6 is connected to a water inlet pipe 601, and the outside of the top of the condenser 6 is connected to a water outlet pipe 602, cooling water is supplied to the inside of the condenser 6 through the water inlet pipe 601, and the condensed water is discharged through the water outlet pipe 602, thereby cooling the solvent entering the middle section 302 to ensure that the solvent can condense and reflux, and a stirrer 7 is arranged inside the conical flask 1, and the stirrer 7 cooperates with an external magnetic stirrer to stir and mix the materials inside the conical flask 1.

[0032] With the above structure, when in use, the sealing part 201 at the bottom end of the main pipe 2 is inserted into the top of the conical flask 1, the bottom of the main pipe 2 is connected with the conical flask 1 through the sealing part 201, and the conical flask 1 is placed on a magnetic stirrer to stir and heat the material in the conical flask 1 with the stirring rod 7; the volatile solvent carries the required extraction substance along the main pipe 2 into the branch pipe 3, and is cooled by the condensed water in the condenser 6 through the middle section 302 of the branch pipe 3, the solvent condenses and refluxes, and the required extraction substance is output outward along the top section 303 to complete the separation; when it is necessary to open the top of the main pipe 2 to add or pour out the reactant, the knob 408 is pulled upward to drive the support rod 401 and the pressure cover 402 to move upward as a whole, and the pressure cover 402 is separated from the top of the main pipe 2, and then upward under the support of the support tube 403 on the top side of the pressure cover 402. Pull the temperature control probe 5 and move the bottom end of the temperature control probe 5 upward to between the gland 402 and the top opening of the main pipe 2. At this time, turn the knob 408 to drive the gland 402, the support tube 403 and the temperature control probe 5 to rotate around the support rod 401, and rotate the gland 402 to a position away from the top opening of the main pipe 2. At this time, the top opening of the main pipe 2 is exposed to facilitate pouring materials along the main pipe 2. When it is necessary to take out the temperature control probe 5 and close the top opening of the main pipe 2, move the bottom end of the temperature control probe 5 upward to between the gland 402 and the top opening of the main pipe 2, and rotate the gland 402 to rotate the sealing groove 404 to the corresponding top opening of the main pipe 2, and then push the positioning plate 405 downward through the spring 406 to ensure that the sealing groove 404 of the gland 402 is pressed tightly against the top opening of the main pipe 2 for sealing, and the temperature control probe 5 is rotated to the outside of the conical flask 1 by the gland 402 for support and placement;

[0033] By sealing and setting a main pipe 2 at the top of the conical flask 1, connecting the obliquely extending branch pipe 3 outside the main pipe 2, extending the main pipe 2 into the pipeline as a temperature control plug, and using the branch pipe 3 as a condensation reflux pipeline, the requirements for the use of the reflux extraction method are met, and the practicability is strong;

[0034] In addition, a supporting assembly 4 for supporting the temperature control probe 5 is arranged on the outer side of the top end of the main pipe 2. When idle, the top opening of the main pipe 2 can be closed by a pressure cover 402, and the temperature control probe 5 can be supported and placed on the outer side of the conical flask 1, so as to avoid the problem of impurities easily adhering to the temperature control probe 5 when it is taken out and placed randomly, and the use is more convenient.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A temperature-controlled magnetic stirring device, comprising a conical flask (1) and a main pipe (2), wherein the main pipe (2) is plugged and connected to the top of the conical flask (1), and the outside of the main pipe (2) is connected to a branch pipe (3) extending outwardly and obliquely, characterized in that: A temperature control probe (5) extending into the conical flask (1) is provided in the middle of the main pipe (2), and a supporting component (4) supporting the temperature control probe (5) is provided on the outside of the main pipe (2); The main pipe (2) is provided with a fixing ear (203) on the outside, the supporting assembly (4) comprises a support rod (401) vertically penetrating the fixing ear (203) and having a clearance fit with the fixing ear (203), a pressure cover (402) is fixed on the outside of the support rod (401) above the fixing ear (203), a receiving groove (407) and a sealing groove (404) are transversely provided on the bottom of the pressure cover (402), the receiving groove (407) and the sealing groove (404) are both circular groove structures that can be pressed onto the top of the main pipe (2), a support tube (403) for accommodating the temperature control probe (5) passing through is fixed on the top side of the receiving groove (407), and the support tube (403) is a rubber cylinder tightened to the outside of the temperature control probe (5).

2. A temperature-controlled magnetic stirring device according to claim 1, characterized in that: A positioning plate (405) is fixed to the bottom end of the support rod (401), and a spring (406) is sleeved on the outside of the support rod (401) on the top side of the positioning plate (405), and the top side of the spring (406) is pressed against the bottom surface of the fixing ear (203).

3. A temperature-controlled magnetic stirring device according to claim 2, characterized in that: A knob (408) is fixed to the top end of the support rod (401), and the compression stroke of the spring (406) is greater than the depth of the sealing groove (404) and the accommodating groove (407).

4. A temperature-controlled magnetic stirring device according to claim 1, characterized in that: A cylindrical sealing portion (201) is coaxially fixed to the outer circumference of the bottom end of the main pipe (2), the sealing portion (201) vertically extends into the inner side of the top opening of the conical flask (1), and the sealing portion (201) is interference fit with the inner wall of the conical flask (1).

5. A temperature-controlled magnetic stirring device according to claim 4, characterized in that: A circular rotating ring (202) is coaxially fixed on the outer circumference of the top end of the sealing portion (201), and a plurality of groups of arc-shaped groove-shaped holding grooves are arranged around the outer circumference of the rotating ring (202).

6. A temperature-controlled magnetic stirring device according to claim 1, characterized in that: The branch pipe (3) comprises a bottom section (301) connected to the main pipe (2); the top of the bottom section (301) is connected to a spirally extending middle section (302); the top of the middle section (302) is connected to a vertically extending top section (303); and a condenser (6) is arranged on the outside of the branch pipe (3).

7. A temperature-controlled magnetic stirring device according to claim 6, characterized in that: The condenser (6) is a cylindrical structure that is sealed and arranged outside the middle section (302); the outside of the bottom of the condenser (6) is connected to a water inlet pipe (601), and the outside of the top of the condenser (6) is connected to a water outlet pipe (602).

8. A temperature-controlled magnetic stirring device according to claim 7, characterized in that: A stirring bar (7) is arranged inside the conical flask (1).

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