Automatic medicament drying system

Abstract

The utility model relates to the technical field of explosive manufacturing, and particularly discloses an automatic agent drying system which comprises a thermodynamic system, a vacuum water bath drying oven and a vacuum system, the thermodynamic system comprises a hot water unit and an anti-explosion hot air box, the vacuum water bath drying oven comprises a box body, and the hot water unit is communicated with an interlayer of the box body through a pipeline; the explosion-proof hot air box is communicated with the vacuum system and the interior of the box body, and a gas concentration sensor extending into the box body is arranged on the box body. During drying, a medicament is placed in the box body, the hot water unit is started to introduce hot water into the interlayer of the box body, the medicament in the box body is heated, then the vacuum system is started to automatically vacuumize the interior of the box body, drying of the medicament in the box body is completed, and the gas concentration sensor can detect the concentration of inflammable gas in the box body in real time and set a gas concentration alarm value. And when the concentration exceeds a gas concentration alarm value, the vacuum system can automatically supplement air into the box body and then vacuumize the box body, so that explosion caused by overhigh concentration of inflammable gas in the box body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of explosive manufacturing, and particularly relates to an automatic drying system for agents. Background Art

[0002] Ignition powder is an important substance specifically used to ignite pyrotechnic agents, pyrotechnic compositions, propellants, propelling charges and other agents. It is characterized by high thermal sensitivity and strong ignition ability, and is a key component of the charge of ignition and fire transfer pyrotechnic devices. Ignition powder is widely used in many fields such as military, civilian and industrial. For example, in the military, it can be used for the launch and detonation of weapons such as shells and missiles; in the civilian field, it can be used for the production of fireworks and firecrackers and the triggering of airbags; in the industrial field, it can be used in various equipment and processes that require precise control of the ignition process.

[0003] After the raw materials in the ignition powder pass through processes such as mixing and granulation, they will contain a certain amount of moisture and volatile components. If these components are not removed, they will affect the stability and combustion performance of the ignition powder. The drying process evaporates the moisture and volatile components in the ignition powder through high-temperature heating, thereby improving the purity and stability of the ignition powder. The existing ignition powder drying system includes a drying box, and the drying box cannot monitor the gas concentration in the box body. When the gas accumulation amount in it is too large, an explosion accident is likely to occur, resulting in great potential safety hazards in the entire drying system and unable to ensure the safe production of detonating agents. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic drying system for agents to solve the problem that when the gas concentration in the box body of the existing drying box is monitored, an explosion accident is likely to occur when the gas accumulation amount is too large.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] An automatic drying system for agents, comprising a thermal system, a vacuum water bath oven and a vacuum system. The thermal system includes a hot water unit and an explosion-proof hot air box. The vacuum water bath oven includes a box body, and a sandwich layer is provided on the side wall of the box body. The hot water unit is communicated with the sandwich layer of the box body through a pipeline. The explosion-proof hot air box and the vacuum system are communicated with the inside of the box body through pipelines, and a gas concentration sensor extending into the inside of the box body is provided on the box body.

[0007] The basic principle of the above technical solution is as follows: Place the medicine in the box body, turn on the hot water unit to introduce hot water into the interlayer of the box body, control the constant temperature, heat the medicine in the box body, then start the vacuum system to automatically evacuate the inside of the box body, and complete the drying of the medicine in the box body. During drying, the gas concentration sensor can detect the concentration of flammable gas in the box body in real time, set the gas concentration alarm value, and when the concentration exceeds the gas concentration alarm value, the vacuum system will automatically supply air into the box body and then evacuate the air again to avoid the excessive accumulation of flammable gas concentration inside the box body and prevent explosion.

[0008] The beneficial effect of the above technical solution is as follows: Compared with the existing drying oven that cannot monitor the gas concentration in the box body, this technical solution is provided with a gas concentration sensor on the box body that can detect the concentration of flammable gas in the box body in real time, and cooperates with the vacuum system to adjust the gas concentration inside the box body, so as to ensure that flammable gas will not accumulate in large quantities inside the box body, avoid explosion accidents, and ensure the safety of the medicine drying process.

[0009] Further, the vacuum system includes a circulating water tank, a vacuum pump, a water bath buffer bottle and a negative pressure sensor. The upper end of the circulating water tank is connected to the vacuum pump through a pipeline, the vacuum pump is connected to the water bath buffer bottle through a pipeline, the water bath buffer bottle is connected to the vacuum water bath oven through a pipeline, and a check valve and a negative pressure sensor are provided on the pipeline between the water bath buffer bottle and the vacuum water bath oven. The air inside the box body is pumped out by the vacuum pump to make the inside of the box body form a negative pressure. A certain amount of water is contained in the water bath buffer bottle to dissolve the impurities in the vacuum air into the water, playing a role of filtering and removing impurities. The negative pressure sensor is used to monitor the negative pressure. After feeding back to the control system, the control system controls the start and stop of the vacuum pump and the start and stop of the explosion-proof hot air box, so as to achieve the purpose of controlling the vacuum degree, the vacuum breaking time and the speed of vacuum breaking. The check valve prevents air from flowing back into the drying oven.

[0010] Further, the bottom end of the box body is fixedly supported by a frame body. The front side of the box body is open, and a box door for closing the opening is slidably connected at the opening. Connecting rods are fixedly connected to the sides of both sides of the box door. The middle of the connecting rods is hinged to the side of the box body. The other ends of the connecting rods away from the box door are hinged to a cylinder, and the bottom end of the cylinder is hinged to the frame body. By controlling the expansion and contraction of the cylinder, the connecting rods are pulled to move up and down, and the up and down movement of the connecting rods realizes the automatic opening and closing of the box door.

[0011] Further, a temperature sensor is provided at the top end of the box body. The temperature sensor can monitor the temperature inside the box body and transmit the monitored temperature signal to the controller. The controller cooperates with the hot water unit to realize the automatic control of the temperature inside the box body.

[0012] Furthermore, a pressure relief opening is provided at the rear side of the box body, and a pressure relief disc is installed at the pressure relief opening. During the normal operation of the oven, high-temperature and high-pressure gases will be generated. If the pressure inside the oven exceeds its bearing capacity, a pressure relief accident may occur, seriously affecting production safety. The setting of the pressure relief disc can release the pressure in time when the internal pressure of the oven reaches a dangerous level, thus avoiding the occurrence of pressure relief accidents.

[0013] Furthermore, the automatic medicine drying system further includes a control system, which includes two parts: a human-machine interface and automatic control. The human-machine interface realizes the human-machine dialogue and process data display of the automatic drying system; the automatic control realizes the functions of automatic control and data acquisition of the drying oven and its auxiliary devices.

[0014] Furthermore, the inner layer material of the interlayer is 304 stainless steel, and the outer layer is filled with heat insulation material. The 304 stainless steel ensures the quality of the box body, and the heat insulation material can reduce the heat exchange between the hot water in the interlayer and the external air.

[0015] Furthermore, an air inlet pipe is provided on the explosion-proof hot air box, and an air filter is provided on the air inlet pipe. The explosion-proof hot air box inhales external air through the air inlet pipe for heating. Before the external air enters the explosion-proof hot air box, the air filter can filter out the impurities in the external air, avoiding introducing impurities into the drying system. The explosion-proof hot air box can introduce hot air into the box body, and the hot air can cooperate with the vacuum system to make the hot air circulate in the box body, thereby taking away the hot air in the box body. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall layout of the automatic drying system of the present invention;

[0017] Figure 2 It is a front-side three-dimensional structural schematic diagram of the vacuum water bath oven of the present invention;

[0018] Figure 3 It is a rear-side three-dimensional structural schematic diagram of the vacuum water bath oven of the present invention.

[0019] The reference numerals in the accompanying drawings of the specification include: thermal system 1, vacuum water bath oven 2, vacuum system 3, hot water unit 11, explosion-proof hot air box 12, hot water pump 13, first check valve 14, first pneumatic stop valve 15, second pneumatic stop valve 16, manual stop valve 17, air filter 18, box body 21, interlayer 22, frame body 23, box door 24, connecting rod 25, cylinder 26, temperature sensor 27, pressure relief disc 28, gas concentration sensor 29, circulating water tank 31, vacuum pump 32, water bath buffer bottle 33, negative pressure sensor 34, second check valve 35. Detailed Embodiments

[0020] The following is a further detailed description through specific embodiments:

[0021] The embodiment is basically as shown in the appendix Figures 1-3 as follows:

[0022] An automatic drying system for medicaments, as Figure 1 shown, sequentially includes a thermal system 1, a vacuum water bath oven 2, and a vacuum system 3 from left to right, and further includes a control system (not shown in the figure). The control system includes two parts: a human-machine interface and automatic control.

[0023] The thermal system 1 includes a hot water unit 11 and an explosion-proof hot air box 12. An air inlet pipe is provided on the explosion-proof hot air box 12, and an air filter 18 is provided on the air inlet pipe. The vacuum water bath oven 2 includes a box body 21. A sandwich layer 22 is provided on the side wall of the box body 21. The inner layer material of the sandwich layer 22 is 304 stainless steel, and the outer layer is filled with heat-insulating material. The hot water unit 11 is connected to the sandwich layer 22 of the box body 21 through a pipeline. A hot water pump 13 is provided on the pipeline between the hot water unit 11 and the sandwich layer 22 of the box body 21. The hot water pump 13 is the power for the circulation of the thermal system 1. A first check valve 14 is provided after the hot water pump 13. The first check valve 14 is to prevent the hot water in the sandwich layer 22 of the box body 21 from flowing back to the hot water unit 11, and is also used to control the circulation direction of the thermal circulation system;

[0024] The pipeline after the check valve is divided into two branches and is respectively connected to the sandwich layer 22 of the box body 21. A first pneumatic stop valve 15 is provided on one branch pipeline, and a second pneumatic stop valve 16 is provided on the other branch pipeline. Side pipes are provided at both ends of the pipeline of the second pneumatic stop valve 16, and manual stop valves 17 are provided on the side pipes. The first pneumatic stop valve 15 is always in a semi-open state during use and has a small flow rate. When all the valves in the thermal system 1 are closed, if the hot water pump 13 still pumps water outwards, the hot water pump 13 will be burned out. At this time, there is always a flow of water drainage on the branch pipeline where the first pneumatic stop valve 15 is located, so that the hot water pump 13 can be protected. The second pneumatic stop valve 16 is used to control the start and stop of the circulation of the thermal system 1. When the second pneumatic stop valve 16 is damaged and cannot work normally, the manual stop valve 17 on the side pipe can be used temporarily instead of the second pneumatic stop valve 16 to ensure the normal use of the thermal system 1.

[0025] The explosion-proof hot air box 12 is connected to the vacuum system 3 through a pipeline and the inside of the box body 21. The vacuum system 3 includes a circulating water tank 31, a vacuum pump 32, a water bath buffer bottle 33, and a negative pressure sensor 34. The upper end of the circulating water tank 31 is connected to the vacuum pump 32 through a pipeline. The vacuum pump 32 is connected to the water bath buffer bottle 33 through a pipeline. A certain amount of water is contained in the water bath buffer bottle 33. The water bath buffer bottle 33 is connected to the vacuum water bath oven 2 through a pipeline. A second check valve 35 and a negative pressure sensor 34 are provided on the pipeline between the water bath buffer bottle 33 and the vacuum water bath oven 2.

[0026] As Figure 2 shown, a frame 23 is fixedly supported at the bottom end of the box body 21. The front side of the box body 21 is open, and a box door 24 for closing the opening is slidably connected at the opening. Connecting rods 25 are fixedly connected to the side surfaces on both sides of the box door 24. The middle of the connecting rods 25 is hinged to the side surface of the box body 21. The other ends of the connecting rods 25 away from the box door 24 are hinged to a cylinder 26. The bottom end of the cylinder 26 is hinged to the frame 23. A temperature sensor 27 is provided at the top end of the box body 21.

[0027] As Figure 3 shown, a pressure relief port is provided at the rear side of the box body 21, and a pressure relief disc 28 is installed at the pressure relief port. A gas concentration sensor 29 extending into the interior of the box body 21 is also provided at the rear side of the box body 21.

[0028] The specific implementation process is as follows:

[0029] Load the medicament to be dried on the medicine tray, start the cylinder 26 to extend, automatically open the box door 24, send all the medicine trays into the vacuum oven, then shorten the cylinder 26, the box door 24 automatically closes, start the hot water pump 13, so that the hot water in the hot water unit 11 flows into the interlayer 22 on the side wall of the box body 21 to provide heat source, control the constant temperature, heat the medicament in the box body 21, then start the vacuum pump 32 of the vacuum system 3, automatically evacuate the interior of the box body 21, and complete the drying of the medicament in the box body 21. During drying, the gas concentration sensor 29 can detect the concentration of flammable gas in the box body 21 in real time, set the gas concentration alarm value. When the concentration exceeds the gas concentration alarm value, the vacuum system 3 will automatically supply air into the box body 21 and then evacuate again, avoiding the excessive accumulation of flammable gas concentration inside the box body 21 and preventing explosion, thus ensuring the safety of the medicament drying process.

[0030] The above are only the embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic drying system for pharmaceuticals, comprising a thermal system, a vacuum water bath oven, and a vacuum system, characterized in that: The thermal system includes a hot water unit and an explosion-proof hot air box. The vacuum water bath oven includes a box body. A sandwich layer is provided on the side wall of the box body. The hot water unit is communicated with the sandwich layer of the box body through a pipeline. The explosion-proof hot air box and the vacuum system are communicated through a pipeline and the inside of the box body. A gas concentration sensor extending into the inside of the box body is provided on the box body.

2. The automatic drying system for a medicament according to claim 1, wherein: The vacuum system includes a circulating water tank, a vacuum pump, a water bath buffer bottle and a negative pressure sensor. The upper end of the circulating water tank is communicated with the vacuum pump through a pipeline. The vacuum pump is communicated with the water bath buffer bottle through a pipeline. The water bath buffer bottle is communicated with the vacuum water bath oven through a pipeline. A check valve and a negative pressure sensor are provided on the pipeline between the water bath buffer bottle and the vacuum water bath oven.

3. The automatic drying system for a medicament according to claim 1, wherein: A frame body is fixedly supported at the bottom end of the box body. The front side of the box body is open, and a box door for closing the opening is slidably connected at the opening. Connecting rods are fixedly connected to the side surfaces on both sides of the box door. The middle of the connecting rods is hinged to the side surface of the box body. The other ends of the connecting rods away from the box door are hinged to a cylinder, and the bottom end of the cylinder is hinged to the frame body.

4. An automatic drying system for a medicament according to claim 3, characterized in that: A temperature sensor is provided at the top end of the box body.

5. An automatic drying system for a medicament according to claim 4, characterized in that: A blast vent is provided at the rear side of the box body, and a rupture disc is installed at the blast vent.

6. The automatic drying system for a medicament according to claim 5, wherein: The automatic drying system for the medicament further includes a control system, and the control system includes two parts: a human-machine interface and automatic control.

7. An automatic drying system for pharmaceuticals according to claim 6, characterized in that: The inner layer material of the sandwich layer is 304 stainless steel, and the outer layer is filled with a heat-insulating material.

8. An automatic drying system for a medicament according to claim 1, wherein: An air inlet pipe is provided on the explosion-proof hot air box, and an air filter is provided on the air inlet pipe.

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