Take the far-infrared radiation type tunnel sterilization dryer as an example, and other models can refer to the corresponding changes.
1. Mode and function (1) Drying and sterilizing by far infrared radiation heating method. At the same time, it can guarantee the heat sterilization and cooling of the bottle in the cleanliness environment of 100;
(2) The sterilization temperature inside the box ensures that the bottle is sterile and pyrogen free after sterilization. At the exit, the temperature of the bottle after cooling should be ≤ room temperature + 15 °C.
2. Structure and manufacture 2.1. Box structure and manufacturing (1) The inner wall material of the box is made of high-quality austenitic stainless steel. The internal joints should be continuous argon arc welding. The welds must be smooth and smooth, and the corners should be arc-transition. Folding edges must not have dead ends and gaps. No blind spots on the structure, easy to clean and prevent the deposition of dust particles;
(2) The outer surface of the box can be made of high-quality austenitic stainless steel wire drawing plate or post-polished;
(3) The insulation performance of the box is good. When the temperature is normal, the surface temperature of the shell rises ≤ room temperature +12 °C (excluding the inlet), and the filling insulation material should not contain Cl-, and ensure that the oral liquid bottle and the air inside the box are not contaminated;
(4) Structural design should consider the deformation of the box caused by the temperature difference stress;
(5) The structure of the infrared heating tube should ensure that the conductive coupling device works for a long time at high temperature without oxidation.
2.2, mesh belt and transmission (1) mesh belt selection and manufacturing to achieve heat without black, the material is recommended to use 316L;
(2) There are two kinds of nets (stainless steel wire-wound and chain plate type), and it is recommended to use chain plate mesh belt. For stainless steel wire-wound type, there should be a guide roller for correcting the deviation on both sides of the mesh belt; for the chain plate type, there should be a guide groove for controlling the deviation on both sides of the mesh belt;
(3) It is necessary to ensure that the operation does not run off and does not produce loose edges, and there are tensioning and tensioning devices.
2.3, clean air and filter (1) should be equipped with high-efficiency filter, high-efficiency filter components must be resistant to high temperatures, the gasket can ensure the sealing under temperature changes;
(2) There must be a certain static pressure distribution above and below the filter, and a distribution plate should be provided for the wind.
2.4. Requirements for wind roads (1) The layout of the wind road is generally designed to be up and down, and the incoming air should be connected to the corresponding HVAC system;
(2) The air volume and wind speed of the front and rear circulation fans of the preheating and cooling sections can be independently adjusted or controlled by frequency conversion. The preheating and cooling section wind speed is generally 0.45m/s, and the high temperature sterilization section wind speed is generally 0.6m/s;
(3) The circulating fan needs temperature resistance, low noise and no leakage.
2.5, test and damper (1) should have the sample of air sampling and temperature measurement, pressure measurement and wind speed measurement sampling sampling port, the position is reasonable and sealed. A measuring pressure difference interface is arranged above and below the filter;
(2) Windshield shall be provided before and after the heating section of the inlet side and at the exit of the tunnel. The high and low positions can be controlled by hand, and the adjustment and locking are convenient.
2.6. The inlet and outlet bottle system (1) can adapt to the automatic feeding of the conveyor belt. The inlet of the machine is equipped with an automatic pushing mechanism, so that the bottles entering the mesh belt are arranged in a row, so that the wind pressure inside the box is relatively stable. At the same time, the bottle should not appear disorderly and disorderly;
(2) The bottle delivery system can automatically enter the bottle carousel.
2.7 Others (1) The oven manufacturing process should be in a relatively clean area. The inner wall of the box and the air duct after manufacture should be decontaminated, cleaned and disinfected with alcohol. After the Zui, the opening is sealed with plastic paper.
(2) The whole machine is easy to clean and easy to repair.
3, electrical and control 3.1, operation speed control (1) the mesh belt only starts when the temperature inside the box reaches the set value;
(2) The speed of the conveyor belt is adjustable, and it is displayed and recorded. The speed should be controlled with the interlocking of the front and rear processes.
3.2, adjustment function (1) circulating fan wind speed should be adjustable by frequency;
(2) The temperature of each section can be independently controlled and arbitrarily set. The control precision is ±5°C, the heating section can be controlled within 300~380°C, and the 350°C high temperature sterilization section running time is ≥5min.
3.3, control display and recording (1) using PLC control, touch screen display and operation, can dynamically reflect the status of each process. There is a menu to choose to run the program or to set the parameters to be run;
(2) Net belt speed and circulation fan speed display and recording;
(3) The temperature indication and recording of each section or the curve on the display screen in real time, the outlet temperature is indicated. The temperature indication and the control temperature measuring element should have their own independence. The heating section indicates that the temperature is consistent with the actual temperature of the bottle. If it does not match, it must be corrected.
(4) The arrangement of quartz electric heating tubes should be reasonable to ensure the uniformity of heat distribution inside the box;
(5) Normal display of wind pressure and wind speed in the box.
3.4. Chain requirements (1) Only after the front and rear circulation fans and exhaust air are opened, can the normal electric heating;
(2) The conveyor belt can only be formally produced when the temperature in the box reaches the set value;
(3) It is necessary to have the operation interlock setting, when the temperature does not meet the set value, the alarm and the low value can automatically stop the chain operation of the belt belt, and each bottle is more than 5 minutes in the environment of ≥350 °C, or verified by the process. Request for control;
(4) When the program is set to stop working, the high temperature zone slowly cools down, the fan still works, and the machine is officially stopped when the temperature drops to 60 °C.
3.5. Monitoring alarm (1) When the temperature inside the box exceeds the set range value, stop heating and alarm;
(2) When the circulating fan fails or suddenly loses power, the hand should be notified of the windshield and stop heating. In order to prevent the filter from burning out, the interlocking device is considered in the control;
(3) The mesh belt overload fault can be mechanically separated from the combined alarm;
(4) Real-time monitoring of the current and voltage of the heating element;
(5) Under the following conditions, the conveyor belt will automatically stop and alarm (conditional setting): the bottle at the outlet of box a is congested; b the bottle is missing from the bottle.
3.6. On-line (1) When the temperature inside the box and the circulating wind speed do not reach the set value, the push bottle mechanism can be controlled to not move or the front bottle washer stops;
(2) When the bottle at the outlet of the box is congested, the mesh belt can be controlled to stop automatically.
4, the installation environment requirements (1) at the level of 100,000 cleanliness;
(2) The connection section between the entrance and exit of the tunnel oven and the upper and lower steps shall be in a cleanliness level of 100 laminar flow environment.
5, the main control indicators (1) drying bottle breakage rate <0.1%;
(2) Net belt speed, in line with production requirements;
(3) Monitoring of dust particles in the box, meeting the criteria of Class 100 cleanliness, and the high efficiency filter requires integrity testing. In addition, laminar flow test: preheating and cooling section: 0.45m / s ± 20%; heating section: 0.6m / s ± 20%; differential pressure test, each section of the pressure difference > 0Pa;
(4) The test of the correct control state of the equipment automatic control system, the full scale of the temperature difference between the collector and the temperature display or the temperature recorder ≤ 1% (ie ≤ ± 5 ° C);
(5) No-load heat distribution test, the temperature of each point is at a set value ≤ ± 15 ° C (such as 350 ± 15 ° C in the sterilization heating section);
(6) Load heat distribution and heat penetration test, after three load verification, FH value ≥ 1365 minutes. The heat distribution and heat penetration test points can also be used for a period of time after sterilization for 5 minutes, which is higher than the process sterilization temperature of 350 °C.
1. Mode and function (1) Drying and sterilizing by far infrared radiation heating method. At the same time, it can guarantee the heat sterilization and cooling of the bottle in the cleanliness environment of 100;
(2) The sterilization temperature inside the box ensures that the bottle is sterile and pyrogen free after sterilization. At the exit, the temperature of the bottle after cooling should be ≤ room temperature + 15 °C.
2. Structure and manufacture 2.1. Box structure and manufacturing (1) The inner wall material of the box is made of high-quality austenitic stainless steel. The internal joints should be continuous argon arc welding. The welds must be smooth and smooth, and the corners should be arc-transition. Folding edges must not have dead ends and gaps. No blind spots on the structure, easy to clean and prevent the deposition of dust particles;
(2) The outer surface of the box can be made of high-quality austenitic stainless steel wire drawing plate or post-polished;
(3) The insulation performance of the box is good. When the temperature is normal, the surface temperature of the shell rises ≤ room temperature +12 °C (excluding the inlet), and the filling insulation material should not contain Cl-, and ensure that the oral liquid bottle and the air inside the box are not contaminated;
(4) Structural design should consider the deformation of the box caused by the temperature difference stress;
(5) The structure of the infrared heating tube should ensure that the conductive coupling device works for a long time at high temperature without oxidation.
2.2, mesh belt and transmission (1) mesh belt selection and manufacturing to achieve heat without black, the material is recommended to use 316L;
(2) There are two kinds of nets (stainless steel wire-wound and chain plate type), and it is recommended to use chain plate mesh belt. For stainless steel wire-wound type, there should be a guide roller for correcting the deviation on both sides of the mesh belt; for the chain plate type, there should be a guide groove for controlling the deviation on both sides of the mesh belt;
(3) It is necessary to ensure that the operation does not run off and does not produce loose edges, and there are tensioning and tensioning devices.
2.3, clean air and filter (1) should be equipped with high-efficiency filter, high-efficiency filter components must be resistant to high temperatures, the gasket can ensure the sealing under temperature changes;
(2) There must be a certain static pressure distribution above and below the filter, and a distribution plate should be provided for the wind.
2.4. Requirements for wind roads (1) The layout of the wind road is generally designed to be up and down, and the incoming air should be connected to the corresponding HVAC system;
(2) The air volume and wind speed of the front and rear circulation fans of the preheating and cooling sections can be independently adjusted or controlled by frequency conversion. The preheating and cooling section wind speed is generally 0.45m/s, and the high temperature sterilization section wind speed is generally 0.6m/s;
(3) The circulating fan needs temperature resistance, low noise and no leakage.
2.5, test and damper (1) should have the sample of air sampling and temperature measurement, pressure measurement and wind speed measurement sampling sampling port, the position is reasonable and sealed. A measuring pressure difference interface is arranged above and below the filter;
(2) Windshield shall be provided before and after the heating section of the inlet side and at the exit of the tunnel. The high and low positions can be controlled by hand, and the adjustment and locking are convenient.
2.6. The inlet and outlet bottle system (1) can adapt to the automatic feeding of the conveyor belt. The inlet of the machine is equipped with an automatic pushing mechanism, so that the bottles entering the mesh belt are arranged in a row, so that the wind pressure inside the box is relatively stable. At the same time, the bottle should not appear disorderly and disorderly;
(2) The bottle delivery system can automatically enter the bottle carousel.
2.7 Others (1) The oven manufacturing process should be in a relatively clean area. The inner wall of the box and the air duct after manufacture should be decontaminated, cleaned and disinfected with alcohol. After the Zui, the opening is sealed with plastic paper.
(2) The whole machine is easy to clean and easy to repair.
3, electrical and control 3.1, operation speed control (1) the mesh belt only starts when the temperature inside the box reaches the set value;
(2) The speed of the conveyor belt is adjustable, and it is displayed and recorded. The speed should be controlled with the interlocking of the front and rear processes.
3.2, adjustment function (1) circulating fan wind speed should be adjustable by frequency;
(2) The temperature of each section can be independently controlled and arbitrarily set. The control precision is ±5°C, the heating section can be controlled within 300~380°C, and the 350°C high temperature sterilization section running time is ≥5min.
3.3, control display and recording (1) using PLC control, touch screen display and operation, can dynamically reflect the status of each process. There is a menu to choose to run the program or to set the parameters to be run;
(2) Net belt speed and circulation fan speed display and recording;
(3) The temperature indication and recording of each section or the curve on the display screen in real time, the outlet temperature is indicated. The temperature indication and the control temperature measuring element should have their own independence. The heating section indicates that the temperature is consistent with the actual temperature of the bottle. If it does not match, it must be corrected.
(4) The arrangement of quartz electric heating tubes should be reasonable to ensure the uniformity of heat distribution inside the box;
(5) Normal display of wind pressure and wind speed in the box.
3.4. Chain requirements (1) Only after the front and rear circulation fans and exhaust air are opened, can the normal electric heating;
(2) The conveyor belt can only be formally produced when the temperature in the box reaches the set value;
(3) It is necessary to have the operation interlock setting, when the temperature does not meet the set value, the alarm and the low value can automatically stop the chain operation of the belt belt, and each bottle is more than 5 minutes in the environment of ≥350 °C, or verified by the process. Request for control;
(4) When the program is set to stop working, the high temperature zone slowly cools down, the fan still works, and the machine is officially stopped when the temperature drops to 60 °C.
3.5. Monitoring alarm (1) When the temperature inside the box exceeds the set range value, stop heating and alarm;
(2) When the circulating fan fails or suddenly loses power, the hand should be notified of the windshield and stop heating. In order to prevent the filter from burning out, the interlocking device is considered in the control;
(3) The mesh belt overload fault can be mechanically separated from the combined alarm;
(4) Real-time monitoring of the current and voltage of the heating element;
(5) Under the following conditions, the conveyor belt will automatically stop and alarm (conditional setting): the bottle at the outlet of box a is congested; b the bottle is missing from the bottle.
3.6. On-line (1) When the temperature inside the box and the circulating wind speed do not reach the set value, the push bottle mechanism can be controlled to not move or the front bottle washer stops;
(2) When the bottle at the outlet of the box is congested, the mesh belt can be controlled to stop automatically.
4, the installation environment requirements (1) at the level of 100,000 cleanliness;
(2) The connection section between the entrance and exit of the tunnel oven and the upper and lower steps shall be in a cleanliness level of 100 laminar flow environment.
5, the main control indicators (1) drying bottle breakage rate <0.1%;
(2) Net belt speed, in line with production requirements;
(3) Monitoring of dust particles in the box, meeting the criteria of Class 100 cleanliness, and the high efficiency filter requires integrity testing. In addition, laminar flow test: preheating and cooling section: 0.45m / s ± 20%; heating section: 0.6m / s ± 20%; differential pressure test, each section of the pressure difference > 0Pa;
(4) The test of the correct control state of the equipment automatic control system, the full scale of the temperature difference between the collector and the temperature display or the temperature recorder ≤ 1% (ie ≤ ± 5 ° C);
(5) No-load heat distribution test, the temperature of each point is at a set value ≤ ± 15 ° C (such as 350 ± 15 ° C in the sterilization heating section);
(6) Load heat distribution and heat penetration test, after three load verification, FH value ≥ 1365 minutes. The heat distribution and heat penetration test points can also be used for a period of time after sterilization for 5 minutes, which is higher than the process sterilization temperature of 350 °C.
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