CN216824863U - Over-temperature protection device of rotary evaporator - Google Patents
Over-temperature protection device of rotary evaporator Download PDFInfo
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- CN216824863U CN216824863U CN202122931136.2U CN202122931136U CN216824863U CN 216824863 U CN216824863 U CN 216824863U CN 202122931136 U CN202122931136 U CN 202122931136U CN 216824863 U CN216824863 U CN 216824863U
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- rotary evaporator
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Abstract
The utility model discloses an over-temperature protection device of a rotary evaporator, which comprises a heating pot, wherein heating rods which are uniformly distributed are fixedly arranged in the heating pot, the heating rods are distributed in the heating pot in a staggered manner, and protection mechanisms are fixedly arranged on the left side and the right side of the heating pot. The overheat protection device of the rotary evaporator is characterized in that a power supply is electrified when the overheat protection device is used, the positive pole of the power supply is connected with a resistor disc, the negative pole of the power supply is connected with a plate electrode, when the rotary evaporator rotates, a heating pot can be driven to rotate together, centrifugal force can be generated in the rotating process of the heating pot, and therefore the contact rod which can drive the inside of a heat conducting rod can be driven to be in contact with the plate electrode, a closed loop is formed, the heating rod heats the heating rod, the temperature in the heating pot rises, after the temperature rises to a certain degree, the resistance on the resistor disc changes along with the temperature change, when a preset value is reached, a resistor disc control circuit is powered off, the heating rod is not required to work, and the overheat protection effect of the evaporator is achieved.
Description
Technical Field
The utility model relates to the technical field of rotary evaporators, in particular to an over-temperature protection device of a rotary evaporator.
Background
The rotary evaporator is a common experimental device, comprises a motor, a distillation flask, a heating pot, a condenser pipe and the like, is mainly used for continuously distilling volatile solvents under the reduced pressure condition, and is applied to the fields of chemistry, chemical industry, biological medicine and the like.
However, in the process of using the rotary evaporator, because the rotary evaporator is not provided with an over-temperature protection device, the phenomenon that the temperature is too high and cannot be better controlled to cause too fast volatilization of a test product in the evaporation process often occurs, so that an evaporator with over-temperature protection is urgently needed, and if the temperature exceeds a limit value in the use process, the power can be automatically cut off.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to an over-temperature protection device for a rotary evaporator, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: an over-temperature protection device of a rotary evaporator comprises a heating pot, wherein heating rods which are uniformly distributed are fixedly arranged in the heating pot, the heating rods are distributed in the heating pot in a staggered mode, and protection mechanisms are fixedly arranged on the left side and the right side of the heating pot;
The protection mechanism comprises a fixed frame fixedly mounted on the side wall of the heating pot, a heat-conducting plate is fixedly mounted on the end face of the fixed frame, which is in contact with the heating pot, a heat-conducting rod is fixedly mounted on the end face of the heat-conducting rod, a resistor disc is fixedly mounted inside the heat-conducting rod, a power supply is externally connected with the resistor disc, when the protection mechanism is used, the power supply is electrified, the positive electrode of the power supply is connected with the resistor disc, the negative electrode of the power supply is connected with a plate electrode, when the rotary evaporator rotates, the heating pot is driven to rotate together, centrifugal force is generated in the rotating process of the heating pot, so that the contact rod inside the heat-conducting rod can be driven to be in contact with the plate electrode, a closed loop is formed, the heating rod heats, the temperature in the heating pot rises, after the resistance on the resistor disc changes along with the temperature change after the resistance disc rises to a certain degree, and when a preset value is reached, the control circuit of the resistor disc is powered off, therefore, the heating rod does not work any more, and the effect of over-temperature protection of the evaporator is achieved.
In a preferred embodiment of the present invention, the resistance chip is made of a thermistor material, and the resistance chip of the thermistor material changes due to a change in temperature when the heating rod and the resistance chip are energized.
According to the preferable technical scheme, sliding rods are connected inside the fixed frame in a sliding mode, guide rail rods are fixedly mounted on the left side and the right side of each sliding rod and are connected with the sliding rods in a sliding mode, return springs are sleeved on the guide rail rods, contact rods are connected on the end faces, away from the resistance sheets, of the heat conducting rods in a sliding mode, connecting springs are sleeved on the contact rods, the contact rods are driven to be in contact with the electrode plates through centrifugal force generated in the rotating process of the heating pot, the whole circuit is made to form a closed loop, then when the heating pot stops rotating, the contact rods are separated from the motor plates, the circuit is powered off, and therefore the effects that heating cannot be conducted when the evaporator does not rotate, and the test piece is locally heated due to uneven temperature in the heating process and harmful effects are caused are achieved.
As a preferable technical solution of the present invention, an electrode plate corresponding to the contact rod is fixedly installed inside the fixing frame, the contact rod is electrically connected to the resistance card, and the electrode plate is connected to a negative electrode of the power supply.
As a preferable technical scheme of the utility model, the sliding rod extends to the outer side of the heating pan, and the contact rod can be controlled to be in contact with the electrode plate by controlling the position of the sliding rod, so that the evaporator can also be heated when the evaporator does not rotate.
As a preferable technical scheme of the utility model, a sliding groove is arranged in the heat conducting rod, and the sliding groove is connected with the contact rod in a sliding manner.
As the preferable technical scheme of the utility model, the heating pan is fixedly arranged on the fixed disk, and the right side of the fixed disk is fixedly provided with the driving device.
Compared with the prior art, the utility model has the beneficial effects that:
1. this rotary evaporator's excess temperature protection device, when using, the power circular telegram, the positive pole of power is connected with the resistance card, the negative pole is connected with the plate electrode, when rotary evaporator rotates, can drive the heating pot and rotate together, the heating pot rotates the in-process and can produce centrifugal force, thereby can drive the contact bar and the plate electrode contact of heat conduction pole inside, thereby a closed circuit has been formed, the heating rod heats, the temperature risees in the heating pot, rise after the certain degree, resistance on the resistance card changes along with temperature variation, when reaching the predetermined value, resistance card control circuit cuts off the power supply, thereby no longer give the work of heating rod, the effect to the excessive temperature protection of evaporator has been reached.
2. This rotatory evaporimeter's excess temperature protection device through at the heating pot at the rotation in-process, can produce centrifugal force, and then drive contact bar and plate electrode contact, make whole circuit form closed circuit, then when heating pot stall, contact bar and motor plate separation, the circuit outage, thereby can reach when the evaporimeter irrotational, can not heat, avoid in the heating process, the temperature is inhomogeneous, lead to the test article part to be heated, cause harmful effects's effect.
Drawings
FIG. 1 is a perspective view of the whole structure of an over-temperature protection device of a rotary evaporator according to the present invention;
FIG. 2 is a schematic perspective view of the over-temperature protection device of a rotary evaporator according to the present invention;
FIG. 3 is a schematic sectional view of the internal structure of a heating pan of the overheat protection apparatus for a rotary evaporator according to the present invention;
fig. 4 is an enlarged schematic view of a part a of the structure in fig. 3 of the over-temperature protection device of the rotary evaporator of the utility model.
In the figure: 1. heating the pan; 11. a heating rod; 2. a protection mechanism; 21. a fixing frame; 211. a slide bar; 212. a guide rail rod; 213. a return spring; 214. a contact lever; 215. a connecting spring; 22. a heat conducting plate; 23. a heat conducting rod; 24. resistance cards; 3. and (7) fixing the disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides an over-temperature protection device for a rotary evaporator, which includes a heating pan 1, and is characterized in that heating rods 11 are fixedly installed inside the heating pan 1, the heating rods 11 are distributed inside the heating pan 1 in a staggered manner, and protection mechanisms 2 are fixedly installed on both left and right sides of the heating pan 1; the protection mechanism 2 comprises a fixed frame 21 fixedly arranged on the side wall of the heating pot 1, a heat conducting plate 22 is fixedly arranged on the end face of the fixed frame 21, which is contacted with the heating pot 1, a heat conducting rod 23 is fixedly arranged on the end face of the heat conducting plate 22, a resistance card 24 is fixedly arranged inside the heat conducting rod 23, the resistance card 24 is externally connected with a power supply, when the protection mechanism is used, the power supply is electrified, the positive pole of the power supply is connected with the resistance card 24, the negative pole of the power supply is connected with an electrode plate, when the rotary evaporator rotates, the heating pot 1 is driven to rotate together, centrifugal force is generated in the rotation process of the heating pot 1, so that the contact rod 214 inside the heat conducting rod 23 can be driven to be contacted with the electrode plate, a closed loop is formed, the heating rod 11 is heated, the temperature in the heating pot 1 rises, and after the temperature rises to a certain degree, the resistance on the resistance card 24 changes along with the temperature change, when the preset value is reached, the resistance card 24 controls the circuit to be powered off, so that the heating rod 11 is not operated any more, and the effect of over-temperature protection of the evaporator is achieved.
The resistive sheet 24 is made of a thermistor material, and when the heater rod 11 and the resistive sheet 24 are energized, the resistance of the resistive sheet 24 of the thermistor material changes due to a temperature change. The inside sliding connection of fixed frame 21 has slide bar 211, the equal fixed mounting in the left and right sides of slide bar 211 has guide rail pole 212, guide rail pole 212 and slide bar 211 sliding connection, the cover is equipped with reset spring 213 on the guide rail pole 212, sliding connection has contact bar 214 on the terminal surface of keeping away from resistance card 24 of heat conduction pole 23, the cover is equipped with connecting spring 215 on the contact bar 214, through at heating pot 1 in the rotation process, can produce centrifugal force, and then drive contact bar 214 and electrode plate contact, make whole circuit form closed loop, then when heating pot 1 stall, contact bar 214 separates with the motor board, the circuit outage, thereby can reach when the evaporimeter irrotational, can not heat, avoid in the heating process, the temperature is inhomogeneous, lead to the test article local heating, cause the effect of harmful effects. An electrode plate corresponding to the contact rod 214 is fixedly mounted inside the fixing frame 21, the contact rod 214 is electrically connected to the resistor sheet 24, and the electrode plate is connected to the negative electrode of the power supply. The sliding rod 211 extends to the outside of the heating pan 1, and the contact rod 214 can be controlled to contact with the electrode plate by controlling the position of the sliding rod 211, so that the heating can be performed when the evaporator is not rotated. The heat conduction rod 23 is provided with a sliding groove therein, and the sliding groove is slidably connected with the contact rod 214. The heating pan 1 is fixedly arranged on the fixed disk 3, and the right side of the fixed disk 3 is fixedly provided with a driving device.
The working principle is as follows: when the rotary evaporator is used, a power supply is electrified, the positive pole of the power supply is connected with the resistance card 24, the negative pole of the power supply is connected with the electrode plate, when the rotary evaporator rotates, the heating pot 1 can be driven to rotate together, centrifugal force can be generated in the rotating process of the heating pot 1, so that the contact rod 214 in the heat conducting rod 23 can be driven to be in contact with the electrode plate, a closed loop is formed, the heating rod 11 is heated, the temperature in the heating pot 1 rises, after the temperature rises to a certain degree, the resistance on the resistance card 24 changes along with the temperature change, and when a preset value is reached, the resistance card 24 controls a circuit to be powered off, so that the heating rod 11 is not operated any more, and the effect of over-temperature protection on the evaporator is achieved; through at heating pot 1 in the rotation in-process, can produce centrifugal force, and then drive contact lever 214 and electrode plate contact, make whole circuit form closed circuit, then when heating pot 1 stall, contact lever 214 and motor board separation, the circuit outage to can reach when the evaporimeter irrotational, can not heat, avoid in the heating process, the temperature is inhomogeneous, lead to the test article local heating, cause harmful effects's effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An over-temperature protection device of a rotary evaporator comprises a heating pot (1), and is characterized in that heating rods (11) which are uniformly distributed are fixedly arranged inside the heating pot (1), the heating rods (11) are distributed inside the heating pot (1) in a staggered manner, and protection mechanisms (2) are fixedly arranged on the left side and the right side of the heating pot (1);
protection mechanism (2) include fixed frame (21) of fixed mounting on heating pot (1) lateral wall, fixed mounting has heat-conducting plate (22) on the terminal surface of fixed frame (21) and heating pot (1) contact, fixed mounting has heat-conducting rod (23) on the terminal surface of heat-conducting plate (22) being close to fixed frame (21), the inside fixed mounting of heat-conducting rod (23) has resistance card (24), resistance card (24) are external to have the power.
2. An over-temperature protection device for a rotary evaporator according to claim 1, wherein the resistive sheet (24) is made of a thermistor material, and the heating rod (11) is electrically connected to the resistive sheet (24).
3. The over-temperature protection device of the rotary evaporator is characterized in that a sliding rod (211) is slidably connected inside the fixing frame (21), guide rail rods (212) are fixedly mounted on the left side and the right side of the sliding rod (211), the guide rail rods (212) are slidably connected with the sliding rod (211), a reset spring (213) is sleeved on each guide rail rod (212), a contact rod (214) is slidably connected onto the end face, away from the resistance sheet (24), of the heat conduction rod (23), and a connecting spring (215) is sleeved on each contact rod (214).
4. The over-temperature protection device of the rotary evaporator according to claim 3, wherein an electrode plate corresponding to the contact rod (214) is fixedly installed inside the fixing frame (21), the contact rod (214) is electrically connected with the resistance sheet (24), and the electrode plate is connected with a negative electrode of a power supply.
5. An over-temperature protection device of a rotary evaporator according to claim 3, wherein the sliding bar (211) extends to the outside of the heating pan (1).
6. The over-temperature protection device of the rotary evaporator according to claim 1 or 3, wherein a sliding groove is formed inside the heat conducting rod (23), and the sliding groove is slidably connected with the contact rod (214).
7. An over-temperature protection device of a rotary evaporator according to claim 1 or 3, wherein the heating pan (1) is fixedly installed on the fixed tray (3), and the right side of the fixed tray (3) is fixedly installed with a driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931136.2U CN216824863U (en) | 2021-11-26 | 2021-11-26 | Over-temperature protection device of rotary evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931136.2U CN216824863U (en) | 2021-11-26 | 2021-11-26 | Over-temperature protection device of rotary evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN216824863U true CN216824863U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122931136.2U Active CN216824863U (en) | 2021-11-26 | 2021-11-26 | Over-temperature protection device of rotary evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116688810A (en) * | 2023-07-25 | 2023-09-05 | 江苏丰山全诺新能源科技有限公司 | Raw material mixing equipment for nonaqueous electrolyte production |
-
2021
- 2021-11-26 CN CN202122931136.2U patent/CN216824863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116688810A (en) * | 2023-07-25 | 2023-09-05 | 江苏丰山全诺新能源科技有限公司 | Raw material mixing equipment for nonaqueous electrolyte production |
| CN116688810B (en) * | 2023-07-25 | 2023-11-03 | 江苏丰山全诺新能源科技有限公司 | Raw material mixing equipment for nonaqueous electrolyte production |
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