CN213376335U

CN213376335U - Constant temperature magnetic stirrers

Info

Publication number: CN213376335U
Application number: CN202021566965.4U
Authority: CN
Inventors: 崔刚
Original assignee: Shandong Pulante Agricultural Technology Co ltd
Current assignee: Shandong Pulante Agricultural Technology Co ltd
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2021-06-08
Anticipated expiration: 2030-08-01

Abstract

The utility model discloses a constant temperature magnetic stirrer, which comprises a thermostat and a host; the thermostat is in a rectangular shape with an opening at the top, a heat preservation layer is arranged in the thermostat, a control screen is arranged on the front wall of the thermostat, a refrigerating fluid inlet and a refrigerating fluid outlet are arranged on the side wall of the thermostat, a liquid storage tank is arranged at the bottom in the thermostat, a semiconductor refrigerating plate is arranged in the liquid storage tank, a refrigerating fluid pipe is connected to the top of the liquid storage tank, the other end of the refrigerating fluid pipe is connected with the top of an interlayer, the interlayer is connected with the refrigerating fluid inlet, the interlayer wraps the outside of a low-temperature thermal radiation heating film, and the low-temperature thermal radiation heating film wraps the outside of the cylindrical vacant inner wall; the utility model discloses a thermostat, including host computer antetheca, host computer antetheca is equipped with the knob, be equipped with the motor in the host computer, the motor links to each other with the pivot, the pivot links to each other with the magnet, the magnet is located between liquid reserve tank and the intermediate layer, the host computer top is equipped with the fixing base with thermostat bottom four corners corresponding position department and places in order to fix a position the thermostat.

Description

Constant temperature magnetic stirrers

Technical Field

The utility model belongs to the technical field of laboratory paraphernalia, concretely relates to constant temperature magnetic stirrers.

Background

The magnetic stirrer is an experimental instrument for liquid mixing, is mainly used for stirring or simultaneously heating and stirring low-viscosity liquid or solid-liquid mixture, utilizes the principle that like poles repel and opposite poles attract of a magnetic field to enable the magnetic field to push a magnetic stirrer placed in a container to perform circumferential operation, thereby achieving the purpose of stirring the liquid, is matched with a heating temperature control system, can heat and control the temperature of a sample according to specific experimental requirements, maintains the temperature required by experimental conditions, and ensures that the liquid mixing meets the experimental requirements.

The existing magnetic stirrer generally adopts a heating plate for heating, so that the heating area is small, and the temperature can be controlled only by heating and can not be reduced, so that heat-sensitive substances can not be dissolved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a constant temperature magnetic stirrer, which has the advantages of large heating area, high efficiency, and bidirectional temperature regulation for heating and cooling.

In order to achieve the above object, the utility model provides a following technical scheme: a constant temperature magnetic stirrer comprises a thermostat and a host machine; the thermostat is in a rectangular shape with an opening at the top, a heat preservation layer is arranged in the thermostat, a cylindrical vacancy for placing a beaker is formed in the thermostat, a control screen is arranged on the front wall of the thermostat, the control screen comprises a microprocessor and a temperature signal converter, a refrigerating fluid inlet and a refrigerating fluid outlet are formed in the side wall of the thermostat, a vertical rod is arranged at the top of the thermostat, a liquid storage tank is arranged at the bottom in the thermostat and is annular, a semiconductor refrigerating plate is arranged in the liquid storage tank, a refrigerating fluid pipe is connected to the top of the liquid storage tank, the other end of the refrigerating fluid pipe is connected with the top of an interlayer, the interlayer is connected with the refrigerating fluid inlet, the interlayer wraps the outside of a low-temperature thermal radiation heating film, and the low-temperature thermal radiation heating film wraps the outside of the inner wall of the cylindrical vacancy for placing; the utility model discloses a thermostat, including host computer antetheca, host computer antetheca is equipped with the knob, be equipped with the motor in the host computer, the motor links to each other with the pivot, the pivot links to each other with the magnet, the magnet is located between liquid reserve tank and the intermediate layer, the host computer top is equipped with the fixing base with thermostat bottom four corners corresponding position department and places in order to fix a position the thermostat.

Preferably, the inner wall of the cylindrical void is stainless steel.

Preferably, the refrigerant liquid inlet and the refrigerant liquid outlet are connected with a peristaltic pump, and the peristaltic pump is connected with the control screen.

Preferably, the top of the vertical rod is provided with a rotating head, a connecting rod is fixed on the rotating head, the tail end of the connecting rod is provided with an open support, a temperature probe is arranged on an upper bracket of the open support and is connected with the control screen through a connecting wire, and the rotating head can rotate freely.

Preferably, the semiconductor refrigeration plate is wrapped with a PE film to achieve sealing.

Preferably, the low-temperature thermal radiation heating film and the semiconductor refrigeration plate are also connected with the control screen.

Preferably, the knob controls the motor speed.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the design is simple, the cost is low, and the manufacture is easy; secondly, the solution can be heated and cooled, and the situation that a common heating magnetic stirrer cannot be cooled due to excessive temperature rise is avoided; thirdly, the beaker is heated in a surrounding way, so that the heating efficiency is high, the temperature is rapidly raised, and the energy is more saved than that of a common heating magnetic therapy stirrer adopting a heating plate to heat the bottom.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a general schematic view of the present invention;

fig. 2 is a schematic sectional view of the present invention.

In the figure: 1. thermostat, 2, host computer, 3, turn round, 4, pole setting, 5, refrigerant liquid entry, 6, refrigerant liquid export, 7, connecting wire, 8, temperature probe, 9, control panel, 10, knob, 11, connecting rod, 12, heat preservation, 13, refrigerant liquid pipe, 14, liquid reserve tank, 15, semiconductor refrigeration board, 16, low temperature heat radiation heating film, 17, intermediate layer, 18, magnet, 19, fixing base, 20, pivot, 21, motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a technical solution: a constant temperature magnetic stirrer comprises a thermostat 1 and a host machine 2; the thermostat 1 is a cuboid with an open top, a heat preservation layer 12 is arranged in the thermostat 1, a cylindrical vacancy for placing a beaker is arranged in the thermostat 1, the inner wall of the cylindrical vacancy is made of stainless steel, a control screen 9 is arranged on the front wall of the thermostat 1, the control screen 9 comprises a microprocessor and a temperature signal converter, a refrigerating fluid inlet 5 and a refrigerating fluid outlet 6 are arranged on the side wall of the thermostat 1, the refrigerating fluid inlet 5 and the refrigerating fluid outlet 6 are connected with a peristaltic pump, the peristaltic pump is connected with the control screen 9, a vertical rod 4 is arranged at the top of the thermostat 1, a rotary head 3 is arranged at the top of the vertical rod 4, a connecting rod 11 is fixed on the rotary head 3, an open bracket is arranged at the tail end of the connecting rod 11, a temperature probe 8 is arranged on the open bracket, the temperature probe 8 is connected with the control screen 9 through a connecting wire 7, and the rotary head 3 can rotate freely, the bottom in the thermostat 1 is provided with a liquid storage tank 14, the liquid storage tank 14 is annular, a semiconductor refrigeration plate 15 is arranged inside the liquid storage tank 14, the semiconductor refrigeration plate 15 is wrapped by a PE film to realize sealing, the top of the liquid storage tank 14 is connected with a refrigeration liquid pipe 13, the other end of the refrigeration liquid pipe 13 is connected with the top of an interlayer 17, the interlayer 17 is connected with a refrigeration liquid inlet 5, the interlayer 17 is wrapped outside a low-temperature thermal radiation heating film 16, the low-temperature thermal radiation heating film 16 is wrapped outside the cylindrical vacant inner wall of a beaker placed in the thermostat, and the low-temperature thermal radiation heating film 16 and the semiconductor plate 15 are also connected with a control screen 9; 2 antetheca of host computer is equipped with knob 10, the 21 rotational speeds of knob 10 control motor, be equipped with motor 21 in the host computer 2, motor 21 links to each other with pivot 20, pivot 20 links to each other with magnet 18, magnet 18 is located between liquid reserve tank 14 and the

intermediate layer

17, 2 tops of host computer and 1 bottom four corners correspondence position department are equipped with fixing base 19 in order to fix a position the placing to thermostat 1.

When the device is used, a beaker filled with a solution to be dissolved is placed in a cylindrical vacancy in a thermostat 1, a rotating head 3 on an upright rod 4 is rotated to enable the tail end of a connecting rod 11 to be arranged above the beaker, a temperature probe 8 is arranged at a fixed position at the tail end of the connecting rod 11 to enable the temperature probe 8 to be immersed in the solution, a power supply of the thermostat 1 is turned on, a control screen 9 is turned on, the dissolving temperature is set to be 50 ℃, a low-temperature thermal radiation heating film 16 starts to be heated, a magnetic stirring rotor is placed in the beaker, the rotating speed of a magnet 18 is adjusted through a knob 10 on a rotating host machine 2, the rotating speed of the magnetic stirring rotor is adjusted, when the actual temperature detected by the temperature probe 8 is higher than 50 ℃, the low-temperature thermal radiation heating film 16 stops heating, the control screen 9 controls a semiconductor refrigerating plate 15 and an external peristaltic pump to work, the refrigerating fluid enters an interlayer 17 to cool the beaker through cooling, the cooled and the warmed, thereby forming a cooling loop, when the temperature probe 8 detects that the temperature is lower than the set temperature, the semiconductor refrigeration plate 15 and the peristaltic pump stop working, the low-temperature thermal radiation heating film 16 starts heating, and the operation is circulated, thereby keeping the solution to be mixed in the beaker at a certain constant temperature.

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

Claims

1. The utility model provides a constant temperature magnetic stirrers, includes thermostat (1) and host computer (2), its characterized in that: the long cubic of thermostat (1) for open-top, be equipped with heat preservation (12) in thermostat (1), be equipped with the cylindrical vacancy of placing the beaker in thermostat (1), be equipped with control panel (9) on thermostat (1) antetheca, control panel (9) contain microprocessor and temperature signal converter, be equipped with refrigerating fluid entry (5) and refrigerating fluid export (6) on thermostat (1) lateral wall, thermostat (1) top is equipped with pole setting (4), the bottom is equipped with liquid reserve tank (14) in thermostat (1), liquid reserve tank (14) are the annular, inside semiconductor refrigeration board (15) that is equipped with of liquid reserve tank (14), liquid reserve tank (14) top is connected with refrigerating fluid pipe (13), the refrigerating fluid pipe (13) other end links to each other with intermediate layer (17) top, intermediate layer (17) link to each other with refrigerating fluid entry (5), the interlayer (17) is wrapped outside the low-temperature thermal radiation heating film (16), and the low-temperature thermal radiation heating film (16) is wrapped outside the inner wall of a cylindrical vacancy of a thermostat for placing a beaker; host computer (2) antetheca is equipped with knob (10), be equipped with motor (21) in host computer (2), motor (21) link to each other with pivot (20), pivot (20) link to each other with magnet (18), magnet (18) are located between liquid reserve tank (14) and intermediate layer (17), host computer (2) top and thermostat (1) bottom four corners correspond position department and are equipped with fixing base (19) and place in order to fix a position thermostat (1).

2. A thermostatic magnetic stirrer according to claim 1, characterized by: the inner wall of the cylindrical vacancy is made of stainless steel.

3. A thermostatic magnetic stirrer according to claim 1, characterized by: the refrigerating fluid inlet (5) and the refrigerating fluid outlet (6) are connected with a peristaltic pump, and the peristaltic pump is connected with the control screen (9).

4. A thermostatic magnetic stirrer according to claim 1, characterized by: pole setting (4) top is equipped with and turns round (3), be fixed with connecting rod (11) on turning round (3), connecting rod (11) end is equipped with the opening support, opening support upper bracket has temperature probe (8), temperature probe (8) link to each other with control panel (9) through connecting wire (7), it can the free rotation to turn round (3).

5. A thermostatic magnetic stirrer according to claim 1, characterized by: the semiconductor refrigeration plate (15) is wrapped by a PE film to realize sealing.

6. A thermostatic magnetic stirrer according to claim 1, characterized by: the low-temperature heat radiation heating film (16) and the semiconductor refrigerating plate (15) are also connected with the control screen (9).

7. A thermostatic magnetic stirrer according to claim 1, characterized by: the rotary knob (10) controls the rotating speed of the motor (21).