Laboratory reaction heating device with emergency cooling and sealing measures

Abstract

The utility model provides a laboratory reaction heating device with emergency cooling and sealing measures, which comprises a reactor shell, a limiting clamping tenon capable of returning after power failure is arranged in the reactor shell, a heating element is erected on the limiting clamping tenon, a reaction vessel is arranged above the heating element, and the reaction vessel is connected with the reactor shell. The reaction vessel is embedded in the reactor shell; and a circuit of the limiting clamping tenon and the heating temperature of the reaction vessel are configured in an interlocking manner. When the reaction is unstable, the device can isolate reactants from the surrounding environment at the first time, and the reaction device is cooled while a heating source is cut off, so that the reaction safety is improved, and the safety of experimenters is guaranteed.

Description

Technical Field

[0001] The utility model relates to the fields of chemistry, chemical industry, pharmaceutical research and development and laboratory equipment, and in particular to a laboratory reaction heating device with emergency cooling and sealing measures. Background Art

[0002] Currently, when conducting heating experiments on known endothermic reactions, laboratory researchers use heating equipment that can only continuously heat the reaction vessel. If a reaction becomes too intense, the only way to shut off the heating is to power it off. However, residual heat from the heater will continue to heat the reaction vessel, exacerbating the reaction for a long time after the heating is turned off. Furthermore, the reaction vessel is open. If a dangerous reaction occurs, the reaction materials will be exposed to the experimental environment for a long time, potentially causing splashing or explosion, posing a potential hazard to researchers. Utility Model Content

[0003] In response to the above problems, the utility model provides a laboratory reaction heating device with emergency cooling and sealing measures. When the reaction becomes unstable, the device can immediately isolate the reactants from the surrounding environment, and cool the reaction device while cutting off the heating source, thereby improving the safety of the reaction and ensuring the safety of the experimenters.

[0004] A laboratory reaction heating device with emergency cooling and sealing measures includes a reactor shell, wherein a limit latch is provided inside the reactor shell for returning to its original position in case of power failure, a heating element is mounted on the limit latch, a reaction vessel is provided above the heating element, and the reaction vessel is embedded in the reactor shell; the control circuit of the limit latch is interlocked with the heating temperature of the reaction vessel.

[0005] Preferably, a base with a central vertical cavity is provided at the bottom of the reactor shell, and a limiting tenon is provided on the side wall of the cavity of the base.

[0006] Preferably, there are at least two groups of limiting tenons, one end of each group of limiting tenons is rotatably connected to the base, and the other ends of all the limiting tenons are together formed in the cavity of the base to form a mounting bracket.

[0007] Preferably, the cavity formed by all the limiting latches after they return to their positions after power failure is smaller than the outer diameter of the heating element.

[0008] Preferably, at least two groups of cooling fans are provided below the reactor shell.

[0009] Preferably, each group of cooling fans has two fans, one for inlet air and one for outlet air.

[0010] Preferably, the air inlet fan and the air outlet fan are arranged symmetrically about the center of the reactor shell.

[0011] Preferably, a foldable cover plate for covering the reaction vessel is provided around the reactor shell.

[0012] Preferably, the outer end of the foldable cover is rotatably connected to the reactor shell.

[0013] Preferably, a lifting frame is arranged above the reactor shell, and a thermometer and a stirring mechanism are installed at the lower end of the lifting frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Compared with traditional heating equipment, the utility model can cut off the heating power supply immediately when the reaction becomes unstable. After the limit latch returns to its position, the heating element drops and separates from the reaction vessel. The reaction vessel is instantly separated from the heat source and covered with a cover to isolate the reactants from the surrounding environment. When the heating source is cut off, the cooling fan is started to cool the reaction, thereby improving the safety of the reaction and ensuring the safety of the experimenters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present invention, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the structure in which the heating element heats the reaction vessel during the reaction process;

[0018] Figure 2 It is a schematic diagram of the structure in which the heating element is away from the reaction vessel when the interlock is triggered by excessive temperature;

[0019] Figure 3 1. It is a schematic diagram of the overall structure of the limiting tenon;

[0020] Figure 4 1. It is a schematic diagram of the decomposed structure of the limit clamp;

[0021] Figure 5 This is a structural diagram of the positional relationship between the limit latch and the heating element when the limit latch is energized;

[0022] Figure 6 This is a schematic diagram of the positional relationship between the limit latch and the heating element when power is lost;

[0023] In the figure, 1. folding cover, 2. reactor shell, 3. cooling fan, 4. heating element, 5. limiting latch, 5-1. block, 5-2. torsion spring, 6. reactor vessel, 7. lifting frame, 8. base. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] The utility model discloses a Figure 1 and Figure 2 The laboratory reaction heating device with emergency cooling and sealing measures shown in the figure, when the reaction starts, the controller controls the heating element 4 to lift and contact the bottom of the reaction vessel 6, and the electrified limit latch 5 set on the heating element base 8 maintains the position of the heating element so that it can continue to heat the reaction vessel 6. After the reaction starts, the remote temperature instrument and the small stirring motor are inserted into the reaction material through the external extended lifting frame 7. The temperature value signal is transmitted to the controller (or the DCS system, which then transmits the temperature control signal to the controller). The controller controls the power of the heating element to keep the reaction within a controllable range. When the reaction is over-excited and the temperature suddenly rises and becomes unstable, and the temperature value exceeds the safe value, the controller (or DCS system) interlocks and cuts off the power supply of the heating element. The limit latch 5 on the heating base 8 loses power and cannot support the heating element 4. The heating element 4 is separated from the bottom of the heating vessel 6. At the same time, the folding cover 1 on the top of the reactor is closed by the motor. The cooling fans 3 installed at the bottom of the four sides of the reactor are turned on. The motors on two sides blow air inward, and the motors on two sides blow air out of the reactor to achieve air circulation in the reactor, bring heat out of the reactor, and achieve a safe cooling effect. The air outlet can be connected to the exhaust gas collection equipment in the laboratory with a hose to prevent the possible spread of toxic gases in the closed environment.

[0026] The reactor shell 2 in the device is hollow inside, and a reaction vessel 6 is embedded in the center of the upper portion. A base 8 is installed at the bottom of the reactor shell 2. The base 8 is a concave cross-section structure with a central cavity. At least two limiting latches 5 are rotatably installed on the side walls of the cavity. The structure of the limiting latches is as follows: Figure 3 and Figure 4 As shown, it includes a card block 5-1 and a torsion spring 5-2. A magnetic attraction is installed on the surface of the card block, and an electromagnet that cooperates with the magnetic attraction is set on the base 8. After the card block 5-1 rotates to a horizontal state under the force of the torsion spring 5-2, the electromagnet is temporarily adsorbed and fixed in an energized state. The ends of multiple limit latches form a bracket, and the heating element 4 is suspended on the base 8, that is, Figure 5In the state shown, the heating element 4 is closest to the reaction vessel 6 and can heat the reaction vessel 6. When the temperature meter on the lifting frame 7 detects a sharp rise in the temperature inside the reaction vessel 6, the control system cuts off the power supply of the electromagnet. The electromagnet loses its power and loses its attraction to the block 5-1. The block 5-1 is pushed to a vertical and flat state under the gravity of the heating element 4, and the torsion spring 5-2 is compressed. The heating element 4 loses its support and falls to the bottom of the cavity of the support, as shown in FIG. Figure 6 In the state shown, the reactor is separated from the reaction vessel 6, and the reaction vessel has lost its heating source, so that the temperature no longer continues to rise.

[0027] A plurality of cooling fans are arranged at the bottom of the reactor shell 2. Each cooling fan group includes an air inlet fan and an air outlet fan which are arranged relatively. The air inlet and the air outlet fans intensify the air circulation inside the reactor shell and take away the temperature inside the reactor shell in time.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A laboratory reaction heating device with emergency cooling and sealing measures, characterized in that: The invention comprises a reactor shell (2), wherein a limiting latch (5) for returning to a position when power is lost is provided inside the reactor shell, a heating element (4) is provided on the limiting latch, a reaction vessel (6) is provided above the heating element, and the reaction vessel is embedded in the reactor shell; the control circuit of the limiting latch and the heating temperature of the reaction vessel are interlocked.

2. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 1 is characterized in that: A base (8) with a central vertical cavity is provided at the bottom of the reactor housing (2), and a limiting latch (5) is provided on the side wall of the cavity of the base (8).

3. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 2, characterized in that: The limiting latches (5) are in at least two groups, one end of each group of limiting latches is rotatably connected to the base (8), and the other ends of all the limiting latches are together formed in the cavity of the base (8) to form a mounting bracket.

4. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 3 is characterized in that: The cavity formed by all the limiting latches (5) after power is lost and returned to their original positions is smaller than the outer diameter of the heating element (4).

5. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 1, characterized in that: At least two groups of cooling fans (3) are provided below the reactor housing (2).

6. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 5, characterized in that: Each group of cooling fans consists of two, one inlet fan and one outlet fan.

7. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 6, characterized in that: The air inlet fan and the air outlet fan are arranged symmetrically about the center of the reactor housing (2).

8. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 1, characterized in that: A folding cover plate (1) for covering the reaction vessel is provided around the reactor shell (2).

9. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 8, characterized in that: The outer end of the folding cover plate (1) is rotatably connected to the reactor shell (2).

10. The laboratory reaction heating device with emergency cooling and sealing measures according to claim 1, characterized in that: A lifting frame (7) is arranged above the reactor shell (2), and a thermometer and a stirring mechanism are installed at the lower end of the lifting frame.

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