Oil bath heating temperature control device

Abstract

The utility model discloses an oil bath heating temperature control device, and relates to the field of medical intermediates. An oil bath heating temperature control device comprises a shell, a controller is arranged on one side of the shell, the upper end of the interior of the shell is fixedly connected with an electric heating plate through a supporting rod, the electric heating plate is electrically connected with the controller, and an oil bath pan is placed on the electric heating plate; according to the utility model, when the heating reaction of one group of chemical products is completed and then the heating reaction of the next group of chemical products is needed, the heat-conducting oil with higher temperature in the oil bath pan can be conveyed into the preheating cavity, and then the cold oil in the oil storage cavity is conveyed into the oil bath pan; according to the oil bath pan, cold oil can pass through the preheating cavity, so that the heat utilization rate is improved while the cooling efficiency of heat conduction oil with higher temperature is improved, and the time required for heating the cold oil in the oil bath pan is shortened by preheating the cold oil, so that the heating efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature control in pharmaceutical intermediates, and specifically relates to an oil bath heating temperature control device. Background Art

[0002] When synthesizing pharmaceutical intermediates, high temperature heating or ultra-low temperature heating is usually used for the reaction due to the needs of chemical reactions. When high temperature heating is used, the reaction is usually carried out in an oil bath in the laboratory because the boiling point of oil is higher than that of water. Due to the characteristics of the chemical reaction itself and in order to ensure the safety of the reaction, it is usually necessary to use a programmed temperature increase method for heating, starting from a lower temperature and gradually increasing to the optimal temperature range for the desired reaction at a fixed rate per hour, so as to achieve parallel and consistent data during small-scale experiments and large-scale expansion.

[0003] In the prior art, in order to increase the speed of chemical reactions, the heat transfer oil used in the oil bath needs to be heated. When a heating test is completed and the next group of chemical products needs to be heated, the heat transfer oil needs to be cooled. However, natural cooling is generally used in the prior art, which results in a slow cooling speed. Moreover, when heating, since the heating starts from low-temperature oil, it takes a long time and the chemical reaction progresses slowly. In view of this, an oil bath heating temperature control device is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an oil bath heating temperature control device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: an oil bath heating temperature control device, comprising a shell, a controller is arranged on one side of the shell, an electric heating plate is fixedly connected to the upper end of the inner part of the shell through a support rod, the electric heating plate is electrically connected to the controller, an oil bath pot is placed on the electric heating plate, an opening for use with the oil bath pot is opened on the shell, and also includes: an oil storage tank, which is installed inside the shell and below the electric heating plate, a preheating chamber and an oil storage chamber are opened in the oil storage tank, the preheating chamber and the oil storage chamber are connected to each other through a through-hole, and a solenoid valve is installed in the through-hole; a first A suction pump and a second suction pump are symmetrically and fixedly connected on both sides of the interior of the shell, the oil inlet and outlet ends of the first suction pump are respectively connected with the oil outlet of the oil bath pot and the oil inlet of the preheating chamber, the oil outlet end of the second suction pump is connected with the oil inlet of the oil bath pot, and the first suction pump, the second suction pump and the solenoid valve are all electrically connected to the controller; a heat exchange tube is fixedly connected to the oil inlet of the second suction pump, and the end of the heat exchange tube away from the second suction pump downwardly penetrates the preheating chamber and the oil storage chamber in sequence; the oil storage tank is provided with a first heat dissipation hole at the position of the oil storage chamber, and the shell is provided with a second heat dissipation hole used in conjunction with the first heat dissipation hole.

[0006] In order to improve the heat exchange efficiency, further, the tube body of the heat exchange tube located in the preheating chamber is designed to be spiral.

[0007] In order to facilitate shielding the oil bath pot, further, the opening of the oil bath pot is covered with a sealing cover.

[0008] In order to prevent the heat transfer oil from splashing, further, the opening of the oil bath pot may be connected with a plurality of clamping rings in sequence from the outside to the inside, and the sealing cover is clamped on the innermost clamping ring.

[0009] In order to facilitate the replacement of the heat conductor, further, a discharge pipe is provided at the lower end of one side of the oil storage tank, the discharge pipe is connected to the oil storage cavity of the oil storage tank, and one end of the discharge pipe away from the oil storage tank passes through the shell.

[0010] In order to facilitate the inspection of the heat transfer oil, further, the oil storage tank is a transparent tank and the shell is a transparent box.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model uses the oil storage tank, the oil storage chamber, the preheating chamber, the first suction pump, the second suction pump, the heat exchange tube and the solenoid valve and other components in coordination. After completing the heating and temperature raising reaction of one group of chemical products, when the next group of chemical products needs to be heated and temperature raised, the heat transfer oil with higher temperature in the oil bath pot can be transported to the preheating chamber, and then the cold oil in the oil storage chamber can be transported into the oil bath pot. During the transportation process, the cold oil will pass through the preheating chamber, thereby improving the efficiency of cooling the heat transfer oil with higher temperature, and also improving the heat utilization rate. Moreover, by preheating the cold oil, the time required for heating the cold oil in the oil bath pot is shortened, thereby improving the heating efficiency.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 The partial cross-sectional structure of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 3 The partial cross-sectional structure of the utility model is shown in FIG. Figure 2 .

[0017] In the figure: 1. Shell; 101. Controller; 102. Electric heating plate; 103. Second heat dissipation hole; 2. Oil bath pot; 201. Sealing cover; 202. Retaining ring; 3. Oil storage tank; 301. Preheating chamber; 302. Oil storage chamber; 303. First heat dissipation hole; 304. First suction pump; 305. Second suction pump; 306. Heat exchange tube; 307. Solenoid valve; 308. Discharge pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0019] Embodiment 1:

[0020] Reference Figure 1-Figure 3, an oil bath heating temperature control device, comprising a shell 1, a controller 101 is arranged on one side of the shell 1, an electric heating plate 102 is fixedly connected to the upper end of the shell 1 through a support rod, the electric heating plate 102 is electrically connected to the controller 101, an oil bath pot 2 is placed on the electric heating plate 102, and an opening for use with the oil bath pot 2 is opened on the shell 1, and also includes: an oil storage tank 3, which is installed inside the shell 1 and below the electric heating plate 102, and a preheating chamber 301 and an oil storage chamber 302 are opened in the oil storage tank 3, and the preheating chamber 301 and the oil storage chamber 302 are connected to each other through a through-hole, and an electromagnetic valve 307 is installed in the through-hole; a first suction pump 304 and a second suction pump 305 are symmetrically fixedly connected to the shell On both sides of the interior of the body 1, the oil inlet and outlet ends of the first suction pump 304 are connected to the oil outlet of the oil bath pot 2 and the oil inlet of the preheating chamber 301 respectively, and the oil outlet end of the second suction pump 305 is connected to the oil inlet of the oil bath pot 2. The first suction pump 304, the second suction pump 305, and the solenoid valve 307 are all electrically connected to the controller 101; the heat exchange tube 306 is fixedly connected to the oil inlet of the second suction pump 305, and the end of the heat exchange tube 306 away from the second suction pump 305 downwardly penetrates the preheating chamber 301 and the oil storage chamber 302 in sequence; the oil storage tank 3 is provided with a first heat dissipation hole 303 at the position of the oil storage chamber 302, and the shell 1 is provided with a second heat dissipation hole 103 used in conjunction with the first heat dissipation hole 303.

[0021] When the chemical product needs to be heated, the experimenter first places the flask containing the chemical product into the oil bath 2 through the bracket, and then starts the second suction pump 305 through the controller 101, and then the heat transfer oil in the oil storage chamber 302 can be transported into the oil bath 2, and then the solenoid valve 307 is controlled to open, and the heat transfer oil in the preheating chamber 301 can enter the oil storage chamber 302 for storage, and then the specified heating temperature can be set on the controller 101, so that when the electric heating plate 102 is turned on to heat the heat transfer oil, the heat transfer oil can be heated to a specified temperature range.

[0022] When the heating reaction of the chemical product in the flask is completed, if the chemical product in another flask needs to be heated and heated, the experimenter can control the first suction pump 304 to start through the controller 101, and then the heat transfer oil with a higher temperature in the oil bath pot 2 can be transported into the preheating chamber 301. When all the heat transfer oil in the oil bath pot 2 is transported into the preheating chamber 301, the second suction pump 305 can be started. The second suction pump 305 can pump the heat transfer oil at room temperature in the oil storage chamber 302 into the oil bath pot 2 through the heat exchange pipe 306. When the heat transfer oil at room temperature passes through the preheating chamber 301, it will exchange heat with the heat transfer oil with a higher temperature in the preheating chamber 301, and then the initial temperature of the heat transfer oil entering the oil bath pot 2 will increase. Therefore, when the next group of chemicals are heated, the time for the heat transfer oil to heat up to the specified temperature can be shortened, thereby effectively improving the heating efficiency.

[0023] When the heat exchange is completed, the solenoid valve 307 can be opened, and then the heat transfer oil in the preheating chamber 301 will flow into the oil storage chamber 302 for storage, and will be cooled through the first heat dissipation holes 303 and the second heat dissipation holes 103.

[0024] Embodiment 2:

[0025] Reference Figure 1-Figure 3 , an oil bath heating temperature control device, which is basically the same as Example 1, and further: the body of the heat exchange tube 306 located in the preheating chamber 301 is designed to be spirally designed. By designing the body of the heat exchange tube 306 located in the preheating chamber 301 to be spirally designed, the residence time of the heat transfer oil with a lower temperature in the preheating chamber 301 can be increased, thereby further improving the heat exchange effect of the heat transfer oil and improving the heat utilization efficiency.

[0026] The opening of the oil bath pot 2 is covered with a sealing cover 201. By setting the sealing cover 201, the oil bath pot 2 can be covered when not in use, thereby preventing external dust and impurities from entering the oil bath pot 2 and mixing with the heat transfer oil, causing pollution to the heat transfer oil and affecting the service life of the heat transfer oil.

[0027] The opening of the oil bath 2 can be connected with multiple clamping rings 202 in sequence from the outside to the inside, and the sealing cover 201 is clamped on the innermost clamping ring 202. Through the arrangement of multiple clamping rings 202, several clamping rings 202 can be opened according to the size of the flask containing chemicals, so that the opening size of the oil bath 2 can be controlled, reducing the possibility of splashing of heat transfer oil, and effectively improving the safety protection effect for experimenters.

[0028] Embodiment 3:

[0029] Reference Figure 1-Figure 3, an oil bath heating temperature control device, which is basically the same as Example 2, and further: a discharge pipe 308 is set at the lower end of one side of the oil storage tank 3, and the discharge pipe 308 is connected with the oil storage cavity 302 of the oil storage tank 3. The end of the discharge pipe 308 away from the oil storage tank 3 passes through the shell 1. Through the setting of the discharge pipe 308, when the heat transfer oil in the oil storage tank 3 reaches the service life, the discharge pipe 308 can be opened at this time so that the heat transfer oil stored in the oil storage tank 3 can be discharged and replaced.

[0030] The oil storage tank 3 is a transparent tank, and the shell 1 is a transparent box. The shell 1 and the oil storage tank 3 are both designed to be transparent, so that the experimenter can check the condition of the heat transfer oil, thereby facilitating the determination of whether the heat transfer oil needs to be replaced according to the color of the heat transfer oil.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. An oil bath heating temperature control device, comprising a shell (1), a controller (101) is arranged on one side of the shell (1), an electric heating plate (102) is fixedly connected to the upper end of the shell (1) through a support rod, the electric heating plate (102) is electrically connected to the controller (101), an oil bath pot (2) is placed on the electric heating plate (102), and an opening for use with the oil bath pot (2) is opened on the shell (1), characterized in that: Also includes: An oil storage tank (3) is installed inside the housing (1) and below the electric heating plate (102); a preheating chamber (301) and an oil storage chamber (302) are provided inside the oil storage tank (3); the preheating chamber (301) and the oil storage chamber (302) are interconnected via a through-hole, and a solenoid valve (307) is installed in the through-hole; A first suction pump (304) and a second suction pump (305) are symmetrically fixedly connected to both sides of the interior of the housing (1); the oil inlet and outlet ends of the first suction pump (304) are respectively connected to the oil outlet of the oil bath pot (2) and the oil inlet of the preheating chamber (301); the oil outlet end of the second suction pump (305) is connected to the oil inlet of the oil bath pot (2); the first suction pump (304), the second suction pump (305) and the solenoid valve (307) are all electrically connected to the controller (101); A heat exchange tube (306) is fixedly connected to the oil inlet of the second suction pump (305), and one end of the heat exchange tube (306) away from the second suction pump (305) passes through the preheating chamber (301) and the oil storage chamber (302) in sequence downward; The oil storage tank (3) is provided with a first heat dissipation hole (303) at a position located in the oil storage cavity (302), and the housing (1) is provided with a second heat dissipation hole (103) used in conjunction with the first heat dissipation hole (303).

2. The oil bath heating temperature control device according to claim 1, characterized in that: The heat exchange tube (306) located in the preheating chamber (301) has a spirally designed tube body.

3. The oil bath heating temperature control device according to claim 1, characterized in that: The opening of the oil bath pot (2) is covered with a sealing cover (201).

4. The oil bath heating temperature control device according to claim 3, characterized in that: The opening of the oil bath pot (2) may be connected with a plurality of snap rings (202) in sequence from the outside to the inside, and the sealing cover (201) is snap-connected to the snap ring (202) located at the innermost side.

5. The oil bath heating temperature control device according to claim 1, characterized in that: A discharge pipe (308) is provided at the lower end of one side of the oil storage tank (3), the discharge pipe (308) is connected to the oil storage chamber (302) of the oil storage tank (3), and one end of the discharge pipe (308) away from the oil storage tank (3) passes through the housing (1).

6. The oil bath heating temperature control device according to claim 1, characterized in that: The oil storage tank (3) is a transparent tank, and the housing (1) is a transparent box.

Images