CN211069986U

CN211069986U - Temperature control system for magnetic stirrer

Info

Publication number: CN211069986U
Application number: CN201921249068.8U
Authority: CN
Inventors: 范雨鸽
Original assignee: Anhui Baoshengyuan New Materials Co ltd
Current assignee: Anhui Baoshengyuan New Materials Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-07-24
Anticipated expiration: 2029-08-05

Abstract

The utility model provides a temperature control system for magnetic stirrers belongs to a biochemical equipment, and this temperature control system includes control by temperature change cover, adjusting valve, jet-propelled pipe and air inlet interface, the utility model discloses can be quick, convenient add to on current magnetic stirrers, under the prerequisite that does not change current agitator structure, make it possess the control by temperature change ability, realize the mixing and the configuration of solution, solvent under the specific temperature, used among this temperature control system and pressed adjusting valve, the dynamics of control temperature control that the user can be convenient realizes different speed cooling or intensifies.

Description

Temperature control system for magnetic stirrer

Technical Field

The utility model relates to a biochemical equipment, concretely relates to temperature control system for magnetic stirrers.

Background

Magnetic stirrers are laboratory instruments for liquid mixing, primarily for stirring liquids of low viscosity or solid-liquid mixtures. The basic principle is that magnetic stirrer inside container is driven by magnetic field to rotate circularly to stir liquid.

In actual mixture and configuration process, different reagents need specific temperature can be better fuse, and specific temperature includes high temperature fusion, also includes low temperature fusion, and present most magnetic stirrers do not have the temperature control ability, and the experimenter needs to adjust the temperature of container and reagent earlier, if: the process of heating by a water bath pot or cooling by a refrigerator and the like and then placing the container and the reagent in a magnetic stirrer has the following problems: 1) the temperature in the stirring process cannot be controlled, and the traditional method has problems for temperature-sensitive substances; 2) the temperature control speed cannot be controlled, for example, ice blocks are used, the cooling speed of a refrigerator is slow, and the mixing of certain extremely-fast cooling cannot be met; 3) when the water bath kettle is used for heating, water is easy to splash, and pollution to a solvent and a solution is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a temperature control system to the problem that prior art exists, this system can be quick add to on current magnetic stirrers, under the prerequisite that does not change current structure, make magnetic stirrers possess the temperature control ability, realize stirring and the configuration of solvent under the specific temperature, used among this temperature control system and pressed adjusting valve, the dynamics of control temperature control that the user can be convenient realizes different speed cooling or intensification.

In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme:

the utility model provides a temperature control system for magnetic stirrers includes control by temperature change cover, governing valve, jet-propelled pipe and the interface that admits air, wherein: the temperature control cover is a hollow shell with an opening at one end, an air cavity is formed in the temperature control cover, an elastic sealing ring is sleeved at the opening end of the temperature control cover, the elastic sealing ring can interact with a contact magnetic stirrer working table surface to seal the air cavity, a valve mounting seat for mounting an adjusting valve is arranged on one side of the temperature control cover, a reinforcing rib is arranged between the bottom of the valve mounting seat and the outer wall of the temperature control cover, a strip-shaped opening is formed in the top of the temperature control cover, an elastic strip is filled in the strip-shaped opening, an exhaust slit is formed in the middle of the elastic strip, and the exhaust slit is used for adjusting the air pressure in the air cavity and; one end of the regulating valve is communicated with the gas ejector pipe, the other end of the regulating valve is communicated with the gas inlet interface, and the regulating valve is used for regulating the delivery quantity of the temperature control gas; the gas ejector pipe penetrates through the side wall of the temperature control cover and is arranged on the inner wall of the gas cavity, and a plurality of nozzles are uniformly arranged on the gas ejector pipe; and the air inlet interface is provided with a switch valve, and the switch valve is connected with a temperature control air source through an external pipeline.

Preferably, the regulating valve includes a valve body, an upper cover, a lower cover, a button, a driving magnet, a flow blocking magnet and a return spring, wherein: the valve body is divided into upper chamber and lower chamber by the baffle at middle part, what the button can reciprocate installs in the space that upper cover and upper chamber formed, drive magnet installs the bottom at the button, choked flow magnet and reset spring all install in the space that lower cover and lower chamber formed, the output hole that is used for the input hole of intercommunication air inlet interface and is used for connecting the jet-propelled pipe is offered to the both sides of cavity down, choked flow magnet is the same with the adjacent magnetic pole of drive magnet, and choked flow magnet can adjust the regulation of air admission resistance in order to realize the air input under drive magnet and reset spring's effect.

Preferably, the driving magnet and the choke magnet are cylinders, and the upper cavity and the lower cavity are cylindrical cavities.

Preferably, the inner walls of the input hole and the output hole are provided with sealing grooves, and sealing rings are installed on the sealing grooves.

Preferably, the temperature control air source comprises a refrigerating air source and a heating air source, the refrigerating air source comprises a liquid argon tank or a liquid nitrogen tank, and the heating air source comprises a steam generator.

The utility model discloses a temperature control system for magnetic stirrers has following beneficial effect:

1) the temperature control system for the magnetic stirrer is simple in structure and convenient to use, can be directly buckled on a working table top of the existing magnetic stirrer, does not change the existing structure, and meanwhile has temperature control adjusting capacity.

2) The bottom edge of this magnetic stirrers control by temperature change cover has configured elastic sealing circle, makes the open end of control by temperature change cover can be inseparable laminating magnetic stirrers's table surface, avoids the gaseous loss of control by temperature change, and elastic sealing circle can adopt silica gel or rubber materials preparation.

3) This magnetic stirrers control by temperature change cover's top is provided with the exhaust gap, the pressure that the exhaust gap can adjust on the one hand in the control by temperature change cover avoids pressure too big, on the other hand can install the thermometer, make entire system's control more accurate, the exhaust gap comprises elastic material, the thermometer can remove in inside, can make the thermometer be located the middle part of beaker or other containers with suitable gesture through the adjustment, avoid colliding with of bottom stirring, the temperature in the reflection container that also can be accurate, during the concrete implementation, the size that makes the exhaust gap is close half of thermometer diameter can.

4) This temperature control system for magnetic stirrers's control by temperature change speed can be adjusted, can adjust the tolerance that gets into the inside of control by temperature change cover through adjusting the valve, realizes that intensification or cooling rate are adjustable.

5) Compared with the traditional valve, the adjusting valve has the advantages that the structure is simple, the adjusting speed is high, the adjustment can be completed only by one finger, meanwhile, the device utilizes the magnetic force, the control device and the execution device are located in different cavities, and the sealing structure can be omitted.

Drawings

Fig. 1 is a schematic view of an application structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic top view of the present invention;

fig. 4 is a schematic structural diagram of the middle regulating valve of the present invention.

In the figure, 1-temperature control cover, 101-air cavity, 102-elastic sealing ring, 103-valve mounting seat, 104-reinforcing rib, 105-strip-shaped opening, 106-elastic strip, 107-exhaust seam, 2-regulating valve, 201-valve body, 202-upper cover, 203-lower cover, 204-upper cavity, 205-lower cavity, 206-button, 207-driving magnet, 208-flow resisting magnet, 209-reset spring, 210-input hole, 211-output hole, 212-sealing ring, 3-air injection pipe, 301-nozzle, 4-air inlet interface, 401-switch valve, 5-thermometer, 6-beaker, 7-stirrer and 8-magnetic stirrer.

Detailed Description

The invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The following examples are merely representative of various aspects and features of the present invention.

As shown in fig. 1, a temperature control system for a magnetic stirrer comprises a temperature control cover 1, an adjusting valve 2, an air injection pipe 3 and an air inlet interface 4, wherein the temperature control cover 1 is directly buckled on a work table of the magnetic stirrer 8 to wrap the whole container, the container is a beaker 6 in the embodiment, a thermometer 7 passes through the top of the temperature control cover 1 to enable the bottom of the thermometer to be suspended in the middle of the beaker 6, and a stirrer 7 is located at the bottom of the beaker 6.

As shown in fig. 2, the temperature control cover 1 is a hollow shell with an open end, an air cavity 101 is formed inside the temperature control cover 1, an elastic sealing ring 102 is sleeved on the open end of the temperature control cover 1, the elastic sealing ring 102 can interact with a work table surface of a magnetic stirrer 8 in contact to seal the air cavity 101, a valve mounting seat 103 used for mounting an adjusting valve 2 is arranged on one side of the temperature control cover 1, reinforcing ribs 104 are arranged between the bottom of the valve mounting seat 103 and the outer wall of the temperature control cover 1, a bar-shaped opening 105 is formed in the top of the temperature control cover 1, an elastic strip 106 is filled in the bar-shaped opening 105, an exhaust slit 107 is formed in the middle of the elastic strip 106, and the exhaust slit 107 is used for adjusting.

It should be noted that, the vent slit 107 in fig. 3 is made of an elastic material, the thermometer 5 can move inside, the thermometer 5 can be positioned in the middle of the beaker 6 or other container in a proper posture by adjustment, the collision of the stirrer 7 at the bottom is avoided, the temperature in the container can be accurately reflected, and in the specific implementation, the size of the vent slit is close to half of the diameter of the thermometer.

In the figure, one end of an adjusting valve 2 is communicated with an air ejector 3, the other end of the adjusting valve 2 is communicated with an air inlet interface 4, the adjusting valve 2 is used for adjusting the conveying amount of temperature control gas, the air ejector 3 penetrates through the side wall of a temperature control cover 1 and is arranged on the inner wall of an air cavity 101, a plurality of nozzles 301 are uniformly arranged on the

air ejector

3, and 2 groups of air ejectors 3 are arranged in the embodiment; the air inlet interface 4 is provided with a switch valve 401, and the switch valve 401 is connected with a temperature control air source through an external pipeline.

As shown in fig. 4, the regulator valve 2 is mounted in the valve mounting seat 103, and the regulator valve 2 includes a valve body 201, an upper cover 202, a lower cover 203, a button 206, a driving magnet 207, a choke magnet 208, and a return spring 209, wherein: the valve body 201 is divided into an upper cavity 204 and a lower cavity 205 by a partition plate in the middle, the upper cavity 204 and the lower cavity 205 are independent spaces, a sealing device can be omitted, a sealing element is arranged at the position of a traditional valve control device, a button 206 can be installed in the space formed by the upper cover 202 and the upper cavity 204 in an up-and-down moving mode, a middle rod of the button 206 is installed in a round hole of the upper cover 202, the button 206 is a big end, a driving magnet 207 is installed at the bottom of the button 206, a flow blocking magnet 208 and a return spring 209 are installed in the space formed by the lower cover 203 and the lower cavity 205, under the condition of not receiving external force, the flow blocking magnet 208 can tightly prop against the upper surface of the lower cavity 205 under the action of the return spring 209 to realize that the minimum air flow passes through or directly cut off the air flow, an input hole 210 for communicating an air inlet interface 4 and an output hole 211 for connecting an air ejector 3 are formed at, specifically, the inner walls of the input hole 210 and the output hole 211 are provided with sealing grooves, and sealing rings 212 are installed on the sealing grooves.

It should be noted that the magnetic poles of the choke magnet 208 adjacent to the driving magnet 207 are the same, and the choke magnet 208 can adjust the intake resistance under the action of the driving magnet 207 and the return spring 209 to achieve adjustment of the intake air amount, and the specific working process is as shown in fig. 4, because the adjacent magnetic poles of the driving magnet 207 and the choke magnet 208 are the same, based on the principle that like poles of the magnets repel each other. Firstly, the switch valve 401 is opened, secondly, under the condition that the button 206 is not subjected to external force, the choke magnet 208 bounces under the action of the return spring 209 to prevent air flow from entering the air cavity 101, at the moment, the air flow is small, under the condition that the button 206 is subjected to external force, the drive magnet 207 moves downwards, and due to the repulsion of like poles, at the moment, the choke magnet 208 overcomes the elastic force of the return spring 209 to move downwards, at the moment, the resistance of the air flow is reduced, and the air flow is increased. In conclusion, the temperature control speed can be adjusted by controlling the pressing force, the valve flow can be adjusted by pressing the button 206 of the adjusting valve 3, and the adjustment can be quickly realized by one finger. Specifically, the sizes and mutual pressing forces of the choke magnet 208, the return spring 209, and the drive magnet 207 need to be designed in advance to ensure that the regulator valve 3 is normally closed in the initial state, and the conventional sealing structure is omitted. Specifically, the driving magnet 207 and the choke magnet 208 are cylindrical bodies, and the upper chamber 204 and the lower chamber 205 are cylindrical chambers.

It should be noted that, the control by temperature change air supply includes refrigeration air supply and heats the air supply, and the refrigeration air supply includes liquid argon gas jar or liquid nitrogen gas jar, heats the air supply and includes steam generator, and is concrete, and liquid argon gas jar or liquid nitrogen gas jar all are the refrigeration air supply commonly used, and steam generator can continuously produce high-temperature steam and be used for heating inside the control by temperature change cover 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a temperature control system for magnetic stirrers which characterized in that, includes control by temperature change cover (1), adjusting valve (2), jet-propelled pipe (3) and admit air interface (4), wherein:

the temperature control cover (1) is a hollow shell with an opening at one end, an air cavity (101) is formed inside the temperature control cover (1), an elastic sealing ring (102) is sleeved at the opening end of the temperature control cover (1), the elastic sealing ring (102) can interact with a working table of the magnetic stirrer (8) in contact to seal the air cavity (101), one side of the temperature control cover (1) is provided with a valve mounting seat (103) for mounting the regulating valve (2), a reinforcing rib (104) is arranged between the bottom of the valve mounting seat (103) and the outer wall of the temperature control cover (1), a strip-shaped opening (105) is arranged at the top of the temperature control cover (1), an elastic strip (106) is filled in the strip-shaped opening (105), an exhaust seam (107) is arranged in the middle of the elastic strip (106), the exhaust slit (107) is used for adjusting the air pressure in the air cavity (101) and fixing the thermometer (5);

one end of the regulating valve (2) is communicated with the gas injection pipe (3), the other end of the regulating valve (2) is communicated with the gas inlet interface (4), and the regulating valve (2) is used for regulating the delivery quantity of the temperature control gas;

the gas ejector pipe (3) penetrates through the side wall of the temperature control cover (1) and is arranged on the inner wall of the gas cavity (101), and a plurality of nozzles (301) are uniformly arranged on the gas ejector pipe (3);

and the air inlet interface (4) is provided with a switch valve (401), and the switch valve (401) is connected with a temperature control air source through an external pipeline.

2. The temperature control system for a magnetic stirrer according to claim 1, wherein the regulating valve (2) comprises a valve body (201), an upper cover (202), a lower cover (203), a button (206), a driving magnet (207), a flow-blocking magnet (208), and a return spring (209), wherein: the air inlet valve is characterized in that the valve body (201) is divided into an upper cavity (204) and a lower cavity (205) by a partition plate at the middle part, the button (206) can be installed in a space formed by the upper cover (202) and the upper cavity (204) in an up-down moving mode, the driving magnet (207) is installed at the bottom of the button (206), the flow blocking magnet (208) and the reset spring (209) are installed in a space formed by the lower cover (203) and the lower cavity (205), an input hole (210) used for communicating the air inlet interface (4) and an output hole (211) used for connecting the air injection pipe (3) are formed in two sides of the lower cavity (205), the magnetic poles adjacent to the flow blocking magnet (208) and the driving magnet (207) are the same, and the air inlet resistance can be adjusted under the action of the driving magnet (207) and the reset spring (209) through the flow blocking magnet (208) so as to.

3. The temperature control system for a magnetic stirrer according to claim 2, wherein the driving magnet (207) and the choke magnet (208) are cylinders, and the upper chamber (204) and the lower chamber (205) are cylindrical chambers.

4. The temperature control system for a magnetic stirrer according to claim 3, wherein the inner walls of the input hole (210) and the output hole (211) are provided with sealing grooves, and sealing rings (212) are installed on the sealing grooves.

5. The temperature control system for a magnetic stirrer according to claim 1, wherein the temperature-controlled gas source comprises a refrigerating gas source and a heating gas source, the refrigerating gas source comprises a liquid argon tank or a liquid nitrogen tank, and the heating gas source comprises a steam generator.