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Tunnel type sterilizing dryer air pressure balance control method and tunnel type sterilizing dryer

A technology of air pressure balance and control method, applied in the fields of pharmaceutical production and food, can solve the problems of difficulty in controlling the adjustment of the pressure gradient in the functional section, affecting the cooling effect of the cooling section, and increasing the temperature in the preheating section.

Active Publication Date: 2022-01-07
TRUKING TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the three functional sections can perform their duties, it is usually necessary to maintain a certain pressure gradient between each section, generally 1-2pa. If the pressure is unbalanced, the following situation will occur: When the pressure of the preheating section is lower than that of the heating section 1 At -2pa, the hot air from the heating section is poured into the preheating section, resulting in an increase in the temperature of the preheating section, which may affect the performance and life of the preheating high-efficiency filter. When the hot air from the heating section flows to the preheating section, the pressure decreases. The cold air in the cooling section will also flow into the heating section, which will affect the sterilization and heat removal effect of the heating section
Conversely, if the pressure in the preheating section is higher than that in the heating section, the air in the preheating section will flow into the heating section, and the pressure in the heating section will increase, causing hot air to flow into the cooling section, thus affecting the cooling effect of the cooling section
[0003] In the prior art, when the air volume of the exhaust fan in the cooling section is adjusted, the pressure in the preheating section and the cooling section will increase and decrease at the same time, and the exhaust fan is located at the bottom of the cooling section (the distance between the suction port of the exhaust fan and the cooling exhaust port and the preheating exhaust port) The distances of the air outlets are different), so it is difficult to control the adjustment of the pressure gradient of each functional section. In addition, the preheating fan and cooling fan in the prior art operate at a fixed frequency, that is, the exhaust air volume of the preheating fan and cooling fan is a fixed value , can not be adjusted, and it is relatively difficult to control the wind pressure balance of the whole machine when the outside world fluctuates

Method used

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  • Tunnel type sterilizing dryer air pressure balance control method and tunnel type sterilizing dryer
  • Tunnel type sterilizing dryer air pressure balance control method and tunnel type sterilizing dryer
  • Tunnel type sterilizing dryer air pressure balance control method and tunnel type sterilizing dryer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] For the existing tunnel-type sterilizing dryer, the pressure difference in each working stage is analyzed as follows:

[0046] Analysis of no-load phase:

[0047] Since there is no bottle above the mesh belt, the heating inlet damper SV1, heating outlet damper SV2, and oven outlet damper SV3 are closed. Influenced by flow fan and cooling laminar flow fan, the fluctuation is small.

[0048] Incoming bottle analysis:

[0049] The bottle feeding stage is a process from empty load (no bottle on the mesh belt) to full load (bottle on the mesh belt), heating inlet damper SV1, heating outlet damper SV2, and oven outlet damper SV3 from closing to opening. At the beginning of the bottle, since the heating inlet damper SV1 is closed, the bottle entering blocks the laminar flow blown by the preheating laminar flow fan, so that the pressure difference between the preheating section and the heating section gradually increases, and the pressure difference fluctuates; During the he...

Embodiment 2

[0085] This embodiment proposes a tunnel type sterilization dryer based on Embodiment 1, such as image 3 As shown, it includes a preheating section 1, a heating section 2, and a cooling section 3 connected in sequence. The feeding end of the heating section 2 is provided with a heating inlet damper SV1, and the discharging end of the heating section 2 is provided with a heating outlet damper SV2. The discharge end of the cooling section 3 is provided with an oven outlet damper SV3. The bottle conveying mesh belt 5 drives the container medicine bottle 4 to pass through the preheating section 1, the heating section 2 and the cooling section 3 successively for sterilization.

[0086] Such as Figure 4 As shown, it also includes a control unit 46, each section in the preheating section 1, heating section 2 and cooling section 3 is provided with an adjustable inlet fan assembly, an adjustable exhaust fan assembly and a pressure gradient monitoring unit, the pressure gradient moni...

Embodiment 3

[0113] According to Embodiment 1, this embodiment proposes a wind pressure balance control system for a tunnel-type sterilizing dryer, including:

[0114] The initial pressure adjustment unit is used to adjust the air intake of the preheating section, the heating section and the cooling section respectively, so that the pressure gradient values ​​of the preheating section, the heating section and the cooling section relative to the washing and drying room are all within the preset threshold range. At this time, the air intake and exhaust air volumes of the preheating section and the cooling section are taken as initial values;

[0115] The pressure reduction unit is used to reduce the air intake of the preheating section or increase the exhaust air volume of the preheating section after the first bottle of the container medicine bottle queue arrives at the preheating section until the pressure gradient value of the preheating section relative to the washing and drying room is w...

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Abstract

The invention discloses a tunnel type sterilizing dryer air pressure balance control method and a tunnel type sterilizing dryer. The method comprises the steps of reducing the air supply amount of a corresponding functional section according to the position where a first bottle of a container medicine bottle queue arrives, and increasing the air supply amount of a corresponding functional section according to the position where a tail bottle of the container medicine bottle queue arrives, so that the pressure in each functional section is kept unchanged in the working process, and the pressure of the whole machine can still be balanced when the outside fluctuates. According to the tunnel type sterilizing dryer, a preheating section, a heating section and a cooling section of the tunnel type sterilizing dryer are each provided with an adjustable air inlet fan assembly, an adjustable exhaust fan assembly and a pressure gradient monitoring unit, so that the pressure conditions of the preheating section and the cooling section can be respectively and independently controlled. According to the tunnel type sterilizing dryer air pressure balance control method and the tunnel type sterilizing dryer, the air inlet amount of a preheating fan and the air inlet amount of a cooling fan can be adjusted respectively, so that the pressure gradient of each functional section is accurately adjusted, and accurate control over the air pressure balance of the whole machine when the outside fluctuates is achieved.

Description

technical field [0001] The invention relates to the fields of food and medicine production, in particular to a method for controlling wind pressure balance of a tunnel-type sterilization dryer and the tunnel-type sterilization dryer. Background technique [0002] The structure of the existing tunnel type sterilization dryer is as follows: figure 1 As shown, it includes the preheating section, heating section and cooling section connected in sequence in the washing and drying room. The preheating exhaust air and cooling exhaust air are discharged through the same exhaust fan after being integrated through the pipeline. In order to ensure that the three functional sections can perform their duties, it is usually necessary to maintain a certain pressure gradient between each section, generally 1-2pa. If the pressure is unbalanced, the following situation will occur: When the pressure of the preheating section is lower than that of the heating section 1 At -2pa, the hot air fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B15/12F26B21/02F26B21/04F26B21/06F26B21/10F26B21/12F26B25/02F26B25/00A61L2/00
CPCF26B15/12F26B21/02F26B21/04F26B21/06F26B21/10F26B21/12F26B25/02F26B25/00A61L2/00
Inventor 李吉龙
Owner TRUKING TECH LTD