Normal-pressure reaction kettle capable of automatically controlling temperature

Abstract

The utility model discloses a normal-pressure reaction kettle capable of automatically controlling temperature. Comprising a reaction kettle, a hanging lug, a weighing sensor, a stirring motor, a stirring shaft, a temperature sensor, a liquid inlet, a liquid outlet, a steam outlet valve, a drain valve, a refrigerant inlet valve, a one-way valve, a steam inlet valve, a refrigerant outlet valve, an emptying valve, a circulating main valve, an outer circulating valve, an inner circulating valve, a refrigerant groove, a unit circulating pump, a refrigerant circulating pump, a PLC control cabinet and an air cooling unit. Compared with the prior art, the temperature in the reaction kettle can be used as an important parameter for continuous production according to the feeding condition, the reaction kettle is cooled through circulating water in the refrigerant, and the refrigerant is cooled through the fan; the reaction kettle is heated through steam circulation, the control system is matched with the feeding system, and adjustment is automatically carried out according to the temperature in the reaction kettle, so that the continuous feeding production condition is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical production, in particular to a normal-pressure reaction kettle capable of automatically controlling temperature. Background Art

[0002] Pharmaceutical products are usually produced by mixing different raw materials in a reactor according to a formula. In the conventional reaction process, as the raw materials dissolve and the drugs react with each other, the temperature in the reactor often rises. If the temperature is too high, it will affect the quality of the product produced. Conventional reactors cannot automatically adjust the temperature in the reactor according to the feeding situation during the production process, which makes it inconvenient to use. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model discloses a normal pressure reactor with automatic temperature control, comprising a reactor, a hanging ear, a weighing sensor, a stirring motor, a stirring shaft, a temperature sensor, a liquid inlet, a liquid outlet, a steam outlet valve, a drain valve, a refrigerant inlet valve, a one-way valve, a steam inlet valve, a refrigerant outlet valve, an emptying valve, a circulation main valve, an external circulation valve, an internal circulation valve, a refrigerant tank, a unit circulation pump, a refrigerant circulation pump, a PLC control cabinet, and an air-cooled unit; three hanging ears are evenly arranged on the circumference of the side of the reactor, a material inlet is arranged on the top, and a material outlet is arranged in the center of the bottom; the weighing sensor is installed on the lower side of the hanging ear; the stirring motor mounting bracket is installed in the center of the upper surface of the reactor, and its motor shaft is equipped with a coupling connected to the top of the stirring shaft; the stirring The shaft extends into the reactor, and a stirring blade is installed at its end; the temperature sensor extends into the reactor, and its top end is fixed on the top of the reactor; a number of coils surround the circumference of the outer wall of the reactor, the top of the coil is the liquid inlet, and the bottom is the liquid discharge port; the refrigerant tank is equipped with a hose to form two loops with the unit circulation pump, air-cooled unit and refrigerant circulation pump, circulation main valve, and internal circulation valve respectively, and the air-cooled unit is equipped with a PLC control cabinet; the internal circulation valve and the refrigerant tank hose are connected in series with the check valve and the refrigerant outlet valve in turn, and then connected in parallel with the check valve and the steam inlet valve, and then connected to the liquid inlet; the hose between the circulation main valve and the internal circulation valve is connected in series with the external circulation valve, the check valve, the refrigerant inlet valve in turn, and then connected in parallel with the steam trap and the steam outlet valve, and then connected to the liquid discharge port; the drain valve is installed between the external circulation valve and the check valve.

[0004] As a preferred technical solution of the present utility model, the liquid in the refrigerant tank is cold water.

[0005] As a preferred technical solution of the utility model, the steam enters the reactor from a branch formed by the one-way valve, the steam inlet valve and the liquid inlet.

[0006] As a preferred technical solution of the utility model, steam condensate is discharged from a branch formed by the drain port, the steam outlet valve and the steam trap.

[0007] As a preferred technical solution of the utility model, the covering height of the coil pipe on the outer wall of the reactor is not less than four fifths of the height of the reactor.

[0008] The beneficial effects of the utility model are as follows: the utility model can use the temperature in the reactor as an important parameter for continuous production according to the feeding situation, cool the reactor by circulating water in the refrigerant, and cool the refrigerant by a fan; heat the reactor by steam circulation, coordinate the control system with the feeding system, and automatically adjust according to the temperature in the reactor to meet the conditions for continuous feeding production. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following will briefly introduce the drawings required for the specific implementation or the prior art description. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] In the figure: reactor 1, hanging ear 2, weighing sensor 3, stirring motor 4, stirring shaft 5, temperature sensor 6, liquid inlet 7, liquid discharge port 8, steam outlet valve 9, steam trap 10, refrigerant inlet valve 11, non-return valve 12, steam inlet valve 13, refrigerant outlet valve 14, drain valve 15, circulation main valve 16, external circulation valve 17, internal circulation valve 18, refrigerant tank 19, unit circulation pump 20, refrigerant circulation pump 21, PLC control cabinet 22, air-cooled unit 23. DETAILED DESCRIPTION

[0012] Example 1

[0013] like Figure 1As shown, the utility model discloses a normal pressure reactor with automatic temperature control, comprising a reactor 1, a hanging ear 2, a weighing sensor 3, a stirring motor 4, a stirring shaft 5, a temperature sensor 6, a liquid inlet 7, a liquid discharge port 8, a steam outlet valve 9, a steam trap 10, a refrigerant inlet valve 11, a one-way valve 12, a steam inlet valve 13, a refrigerant outlet valve 14, an emptying valve 15, a circulation main valve 16, an external circulation valve 17, an internal circulation valve 18, a refrigerant tank 19, a unit circulation pump 20, a refrigerant circulation pump 21, a PLC control cabinet 22, and an air cooling unit 23; three hanging ears 2 are evenly arranged on the circumference of the side of the reactor 1, a material inlet is arranged on the top, and a material outlet is arranged at the center of the bottom; the weighing sensor 3 is installed on the lower side of the hanging ear 2; the stirring motor 4 is equipped with a bracket and installed in the center of the upper surface of the reactor 1, and its motor shaft is equipped with a coupling and connected to the top of the stirring shaft 5; the stirring shaft 5 extends into the reactor 1, and its end a stirring blade is installed at the end; the temperature sensor 6 extends into the reactor 1, and its top end is fixed on the top of the reactor 1; a plurality of coils surround the outer wall of the reactor 1, the top of the coil is a liquid inlet 7, and the bottom is a liquid discharge port 8; the refrigerant tank 19 is equipped with a hose to form two loops with the unit circulation pump 20, the air-cooled unit 23 and the refrigerant circulation pump 21, the circulation main valve 16, and the inner circulation valve 18, and the air-cooled unit 23 is equipped with a PLC control cabinet 22; the inner circulation valve 18 and the refrigerant tank 19 hose are connected in series with the check valve 12 and the refrigerant outlet valve 14 in turn, and then connected in parallel with the check valve 12 and the steam inlet valve 13 to the liquid inlet 7; the hose between the circulation main valve 16 and the inner circulation valve 18 is connected in series with the outer circulation valve 17, the check valve 12, the refrigerant inlet valve 11 in turn, and then connected in parallel with the steam trap 10 and the steam outlet valve 9 to the liquid discharge port 8; the drain valve 15 is installed between the outer circulation valve 17 and the check valve 12. The liquid in the refrigerant tank 19 is cold water, which can be circulated through the loop formed by the unit circulation pump 20 and the PLC control cabinet 22 according to the real-time temperature reflected by the temperature sensor 6 to reduce the temperature of the reactor 1, and the circulating water is cooled by the air cooling unit 23. Steam enters the reactor 1 from the branch formed by the one-way valve 12, the steam inlet valve 13 and the liquid inlet 7, and the temperature of the reactor can be increased through steam circulation to avoid the temperature in the reactor being too low. The steam condensate is discharged from the branch formed by the drain port 8, the steam outlet valve 9 and the steam trap 10 to ensure that the steam can be circulated continuously.

[0014] Working principle of the utility model: when the utility model is used, the material is fed into the reactor 1 from the feeding port on the reactor, and then the air cooling unit 23 is turned on to cool the water inside the refrigerant tank 19, and then the real-time temperature inside the reactor 1 is fed back through the temperature sensor 6. When the temperature is too high, the steam inlet valve 13 and the steam outlet valve 9 are closed, and the refrigerant outlet valve 14 and the refrigerant inlet valve 11 are opened with a delay, and the cold water in the refrigerant tank 19 is pumped into the coil of the outer wall of the reactor 1 through the refrigerant circulation pump 21, which will reduce the temperature of the reactor 1; if the temperature inside the reactor 1 is too low, the refrigerant outlet valve 14 and the refrigerant inlet valve 11 are closed, and the steam inlet valve 13 and the steam outlet valve 9 are opened with a delay, and steam is injected into the coil of the outer wall of the reactor 1 to increase the temperature of the reactor 1. The automatic feeding system of the reactor 1 is matched with the temperature control system to realize the controllable temperature inside the reactor 1, which is convenient for the continuous feeding production of medicines.

[0015] The components not described in detail herein are prior art. The thermometer electrical signal feedback, pump and valve control, and pipeline connection involved in the present invention are all technical means commonly used by those skilled in the art.

[0016] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A normal pressure reactor capable of automatic temperature control, characterized in that: The invention comprises a reaction kettle (1), a hanging ear (2), a weighing sensor (3), a stirring motor (4), a stirring shaft (5), a temperature sensor (6), a liquid inlet (7), a liquid outlet (8), a steam outlet valve (9), a steam trap (10), a refrigerant inlet valve (11), a one-way valve (12), a steam inlet valve (13), a refrigerant outlet valve (14), an exhaust valve (15), a circulation main valve (16), an external circulation valve (17), an internal circulation valve (18), a refrigerant tank (19), a unit circulation pump (20), a refrigerant circulation pump (21), PLC control cabinet (22), air cooling unit (23); three hanging ears (2) are evenly distributed on the circumference of the side of the reactor (1), and a material inlet is provided at the top and a material outlet is provided at the center of the bottom; the weighing sensor (3) is installed on the lower side of the hanging ear (2); the stirring motor (4) is equipped with a bracket and installed in the center of the upper surface of the reactor (1), and its motor shaft is equipped with a coupling and connected to the top of the stirring shaft (5); the stirring shaft (5) extends into the reactor (1), and a stirring blade is installed at the end; the temperature The sensor (6) extends into the reactor (1), and its top end is fixed on the top of the reactor (1); a plurality of coils surround the outer wall of the reactor (1), the top of the coils is a liquid inlet (7), and the bottom is a liquid outlet (8); the refrigerant tank (19) is equipped with a hose, which is respectively connected to the unit circulation pump (20), the air cooling unit (23) and the refrigerant circulation pump (21), the circulation main valve (16), and the internal circulation valve (18) to form two loops, and the air cooling unit (23) is equipped with a PLC control cabinet (22); the internal circulation valve (18) and The refrigerant tank (19) hose is sequentially connected in series with the one-way valve (12) and the refrigerant outlet valve (14), and then connected in parallel with the one-way valve (12) and the steam inlet valve (13), and then connected to the liquid inlet (7); the hose between the circulation main valve (16) and the internal circulation valve (18) is sequentially connected in series with the external circulation valve (17), the one-way valve (12), the refrigerant inlet valve (11), and then connected in parallel with the steam trap (10) and the steam outlet valve (9), and then connected to the liquid discharge port (8); the drain valve (15) is installed between the external circulation valve (17) and the one-way valve (12).

2. The automatic temperature-controlled atmospheric pressure reactor according to claim 1, characterized in that: The liquid in the refrigerant tank (19) is cold water.

3. The automatic temperature-controlled atmospheric pressure reactor according to claim 1, characterized in that: Steam enters the reactor (1) from a branch formed by the one-way valve (12), the steam inlet valve (13) and the liquid inlet (7).

4. The automatic temperature-controlled atmospheric pressure reactor according to claim 1, characterized in that: Steam condensate is discharged from a branch formed by the drain port (8), the steam outlet valve (9) and the steam trap (10).

5. The automatic temperature-controlled atmospheric pressure reactor according to claim 1, characterized in that: The outer wall coil of the reactor (1) covers a height of not less than four fifths of the height of the reactor (1).

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