JP6385134B2 - Disinfectant feeding and atomizing equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a disinfectant liquid feeding / atomizing device that constitutes a disinfecting apparatus for food filling and packaging machines and the like, and more specifically, a disinfectant capable of controlling the amount of disinfectant such as hydrogen peroxide to be gasified to be constant The present invention relates to an apparatus for feeding liquid to a gasification tank and atomizing the gasification tank.

  Conventionally, when filling liquid foods such as milk and soft drinks into paper containers and plastic containers, the containers before filling liquid foods are sterilized with a disinfectant such as hydrogen peroxide in order to extend the shelf life of products. Is widely practiced. In the case of a roll-shaped packaging material (paper, resin film), it is sterilized by dipping in a high-temperature, high-concentration disinfectant for a certain period of time. For the complicated container shape, the mainstream method is to heat the bactericide above the boiling point, gasify it, spray and condense it in the container, and dry it with hot air. In this sterilization method, the amount of sterilizing agent (hydrogen peroxide) to be gasified becomes an important management factor in terms of sterilization performance and chemical residue. That is, it is necessary to keep the amount of the bactericidal agent to be gasified (the flow rate of hydrogen peroxide supplied to the gasifier) constant (stable supply) and strictly manage the amount in real time. Hydrogen peroxide is mainly used as a bactericidal agent, but this chemical has a problem that it is easy to generate bubbles and it is difficult to measure the flow rate.

  When air bubbles are generated in the sterilizing agent liquid, the flow rate of the sterilizing agent is combined with a small amount, which may hinder the transport of the liquid and the amount of the sterilizing agent sprayed per unit time may not be maintained at a constant level. . To produce a safer product, the amount of germicide sprayed per unit time is too small to obtain a sufficient sterilizing effect, and if too much, it is difficult to remove the germicide by drying. It is necessary to monitor whether the amount of disinfectant used per unit time is always kept at a constant level.

  Conventionally, as a device for preventing the growth of bubbles in the pipe of liquid disinfectant and monitoring the amount of disinfectant used per unit time, a tank for storing a liquid disinfectant and a disinfectant In a sterilization apparatus comprising a nozzle for spraying a liquid sterilization object onto a sterilization target, a pipe for guiding the liquid sterilizing agent in the tank to the spraying means, and a pump for feeding the liquid sterilizing agent from the tank to the spraying means, a pipe is provided with a flow meter Also known is a sterilizer equipped with a flow rate monitoring device that measures the flow rate of liquid while providing an orifice on the downstream side of the flow meter of the pipe and suppressing the generation of bubbles by making the upstream side of the orifice of the pipe pressurized by the orifice. (See Patent Document 1). However, in this apparatus, since high pressure cannot be applied to the downstream side of the orifice, bubbles are generated on the downstream side of the orifice. That is, a spray abnormality occurs.

  In addition, a tank for storing a liquid sterilizer, a nozzle for spraying the sterilizer on the object to be sterilized, a pipe for guiding the liquid sterilizer in the tank to the spraying means, and a nozzle for liquid sterilizer from the tank through the pipe A pressure supply means that supplies air pressure to the tank and a cooling means that cools the pipe are provided, and the flow rate of the liquid is measured by increasing the liquid flow rate and cooling the liquid to suppress the generation of bubbles. A sterilizer equipped with a flow rate monitoring device is known (see Patent Document 2).

  Further, a tank for storing a liquid sterilizing agent, a spraying means for spraying a sterilizing agent transported from the tank onto an object to be sterilized, and a liquid sterilizing agent in the tank is sprayed by communicating the tank and the spraying means. A guide pipe that guides the means; a pressure supply means that is provided upstream of the tank and that supplies air pressure for transporting the liquid sterilizing agent from the tank to the spraying means through the guide pipe; and provided in the guide pipe And a throttle means for maintaining the inside of the guide pipe at a predetermined pressure, and a pressure detector provided between the transport means and the throttle means, and the tank is supplied to the tank based on the pressure detected by the pressure detector. There is known a sterilizer equipped with a flow rate monitoring device that provides a control means for controlling the air pressure of the pressure supply means, suppresses the influence of bubbles on the pressure in the pipe, and accurately adjusts the spray amount of the sterilizing agent. Have See Patent Document 3). However, although this disinfectant spraying device is provided with bubble removing means to suppress the influence of bubbles on the pressure detector, there are many bubbles in the pipe upstream of the bubble removing means, Since there are newly generated bubbles downstream from the removing means, the air pressure of the pressure supplying means to the tank is controlled based on the pressure detected by the pressure detector to adjust the spray amount of the sterilizing agent. Was limited in terms of its accuracy. Further, since a predetermined time is required until the pressure in the tank is controlled based on the pressure detected by the pressure detector, real-time control is difficult.

  Furthermore, a hot air pipe having an inlet at one end and an outlet at the other end, a hot air source for supplying hot air at a temperature capable of gasifying the sterilizing liquid, and a spraying means for spraying the sterilizing liquid into the hot air pipe are provided. In the disinfectant gasifier, the spray means has a gas-liquid mixing double-tube spray nozzle with the nozzle facing the hot air tube, reducing the load on the hydrogen peroxide pump while suppressing the generation of bubbles In addition, a bactericide gasification apparatus (see Patent Document 4) that can stabilize the liquid feeding situation and can improve gasification efficiency, and a hot air pipe having a hot air inlet at one end and a hot air outlet at the other end. A hot air source supplying hot air at a temperature capable of gasifying the sterilizing liquid at the hot air inlet, and spraying the sterilizing liquid in a direction opposite to the flow of the hot air ejected from the hot air outlet, and the sprayed micronized sterilizing liquid collides with the hot air Spray nozzles to make Both of them are equipped with a hot gas outlet of the hot air pipe and a sealed gasification tank surrounding the spray part at the tip of the spray nozzle, on the opposite side of the spray part at the tip of the spray nozzle across the hot air outlet in the gasification tank. A sterilizing liquid gasifier (see Patent Document 5) in which a gas discharge port is formed has been proposed. In an atomizing nozzle having a gas-liquid mixing double tube structure in these sterilizing liquid gasifiers, an orifice nozzle is used for feeding liquid. Since it is not provided at the end of the line, high pressure cannot be applied to the downstream side of the orifice nozzle, and bubbles are generated on the downstream side of the orifice.

Japanese Patent Laid-Open No. 5-180855 JP 2000-289716 A Japanese Patent Laid-Open No. 2005-200027 JP 2007-20744 A WO2012 / 077307

  An object of the present invention is to solve the problems of the prior art, and to provide a disinfectant feeding / atomizing device capable of measuring and monitoring the disinfectant flow rate with high accuracy in real time even with a small flow rate. It is to provide.

  The present inventor has been able to accurately measure the flow rate of the bactericidal agent even when the flow rate is very small while suppressing the generation of bubbles, and as a result of earnest study to develop a low-cost sterilizer, the generation of bubbles is suppressed. In order to achieve this, it was thought that it was necessary to maintain a constant pressure up to the end of the hydrogen peroxide supply line. In order to pressurize to the end of the supply line, it was considered necessary to apply air pressure to the hydrogen peroxide storage tank and pump it, and to install an orifice at the end in order to bring the pressure to the end of the supply line. A needle valve is known as an orifice, but since the needle valve cannot be installed at the end of the line, an injection needle consisting of a needle tube and a needle base is used as the orifice, and the needle tube of the injection needle is ejected with hydrogen peroxide. We considered assembling as a part of the nozzle (particulate nozzle). In addition, in a system that does not gasify hydrogen peroxide (= when it is sprayed into a container in the form of a mist), an ultrafine PEEK tube is used instead of the needle tube of the injection needle, and a method of connecting to a general-purpose nozzle using a dedicated joint is considered. It was.

  Therefore, a pressurized air source is connected upstream of the hydrogen peroxide storage tank, an orifice nozzle (needle tube of the injection needle) is provided at the end of the hydrogen peroxide feed line, and the flow rate is supplied to the guide pipe connecting the storage tank and the ejection nozzle. A flow measurement system for hydrogen peroxide with a sensor was constructed. And, as a result of providing the orifice nozzle at the most downstream of the ejection nozzle connected to the end of the guide pipe, it was confirmed that all the upstream side from the orifice nozzle including the inside of the guide pipe can be pressurized, and the present invention was completed. I let you.

That is, the present invention is as disclosed below.
(1) a storage tank for storing a liquid disinfectant;
An ejection nozzle that ejects the disinfectant transferred from the storage tank in a mist form;
A guide pipe that communicates the storage tank and the ejection nozzle to guide the liquid disinfectant in the storage tank to the ejection nozzle;
A flow sensor provided in the guide pipe;
Provided upstream of the storage tank, and a pressurized air source for transferring the liquid disinfectant from the storage tank to the ejection nozzle through the guide pipe,
The jet nozzle has a double pipe structure consisting of an inner pipe and an outer pipe, and the sterilizing agent jets from an inner pipe consisting of an orifice nozzle that functions as a throttle means for maintaining the inside of the guide pipe on the upstream side at a predetermined pressure. , A bactericidal agent feeding and atomizing device characterized in that air is ejected from the gap between the inner pipe and the outer pipe communicating with the air supply pipe, and the bactericidal agent ejected becomes mist by the air;
(2) The air supply pipe is connected to a pressurized air source provided upstream of the storage tank via a regulator, ,
(3) The air supply pipe is connected to a pressurized air source through a storage tank and a regulator in order, and the bactericide feeding / atomizing device according to (1),
(4) The disinfectant liquid feeding / atomizing device according to any one of (1) to (3) above, wherein the flow sensor is a Coriolis flow meter,
(5) The disinfectant liquid feeding / atomizing device according to any one of (1) to (4) above, wherein the orifice nozzle is an ultrafine hollow body utilizing a needle tube portion of an injection needle,
(6) The sterilant feeding / atomizing device according to any one of (1) to (5) above is provided, and an ejection nozzle for ejecting the sterilizing agent in the liquid feeding / atomizing device is arranged in the gasification tank. The present invention relates to a sterilizing liquid gasifier.

  Conventionally, hydrogen peroxide is sucked with a plunger pump and sent in a fixed amount, but the suction side of the pump has a negative pressure and it is difficult to completely prevent the generation of bubbles. An air chamber was installed, and it took time until the set flow rate was reached after the pump was turned on. Further, since the flow rate is converted from the correlation between the hydrogen peroxide flow rate and the pressure, if the line state is changed such as needle replacement and pump maintenance, the reliability is lost, and the correlation needs to be reconfirmed. According to the present invention, the above problem can be solved. For example, since the orifice nozzle (the needle tube of the injection needle) is provided at the end of the hydrogen peroxide supply path, the needle tube functions not only as a hydrogen peroxide fine particle nozzle but also as a throttling means. All are in a pressurized state, and the generation of hydrogen peroxide bubbles can be suppressed, and the flow rate of hydrogen peroxide is adjusted by the supply pressure to the hydrogen peroxide storage tank. The flow rate of hydrogen peroxide, which is a factor related to drug residue, can be measured and managed in real time using a general-purpose Coriolis flow meter.

It is the schematic of the sterilization liquid gasification apparatus provided with the liquid supply and atomization apparatus of the bactericide of this invention. It is the schematic of the sterilization liquid gasification apparatus provided with the liquid supply and atomization apparatus of the bactericide of this invention. It is a partially expanded view of the sterilizing liquid gasification apparatus provided with the liquid sending / atomizing apparatus of the sterilizing agent of the present invention. It is an enlarged view of the ejection nozzle in the liquid supply / atomization apparatus of the disinfectant of this invention. It is an enlarged view of the front-end | tip part of the ejection nozzle in the liquid supply / atomization apparatus of the bactericide of this invention.

  The sterilizing liquid feeding / atomizing device of the present invention includes a storage tank for storing a liquid sterilizing agent; an ejection nozzle for ejecting the sterilizing agent transferred from the storage tank in the form of a mist; the storage tank and the ejection A guide pipe for communicating (transferring) the liquid sterilizing agent in the storage tank to the ejection nozzle through the nozzle; a flow rate sensor provided in the guide pipe; and a storage pipe provided upstream of the storage tank. And a pressurized air source for transferring the liquid sterilizing agent to the jet nozzle through the guide pipe, and the jet nozzle has a double pipe structure composed of an inner pipe and an outer pipe, and guides the upstream side thereof. Bactericidal agent is ejected from the inner pipe consisting of an orifice nozzle that functions as a throttle means for maintaining the inside of the pipe at a predetermined pressure, air is ejected from the gap between the inner pipe and the outer pipe communicating with the air supply pipe, The guide pipe is not particularly limited as long as it is a strike device, and the guide pipe includes a plunger pump, a tube pump, a diaphragm pump and other flow-adjustable pumps, a pressure detector, and a pressure fluctuation absorbing means such as an air chamber. Is not particularly necessary.

  The storage tank is not particularly limited as long as it can store a liquid disinfectant, and may be a large tank capable of storing a large amount of disinfectant, a disinfectant amount detection means, or the like. It may be a small or medium tank of a type in which a disinfectant is added continuously or intermittently provided.

  The ejection nozzle has a double tube structure composed of an inner tube and an outer tube capable of ejecting the sterilizing agent transferred from the storage tank in a mist form, upstream of the inner tube of the ejection nozzle, and a guide pipe An inner pipe composed of an orifice nozzle (ultrafine hollow body) that functions as a throttle means for maintaining the inside at a predetermined pressure, for example, 0.01 to 0.6 MPa, preferably 0.05 to 0.3 MPa, communicates with an air supply pipe. A two-fluid nozzle having an outer tube that forms a gap in cooperation with the inner tube can be mentioned. As the above-mentioned orifice nozzle, in addition to those for sterilizing liquid gasifiers in which an injection needle is used as an orifice and the needle tube of the injection needle is incorporated as a part of a micronizing nozzle of a sterilizing agent such as hydrogen peroxide, the sterilizing agent is in a mist form. In the case of jetting directly into the container, an ultrafine PEEK tube can be used instead of the needle tube of the injection needle, and these can be used by connecting to a general-purpose nozzle using a dedicated joint.

  The ejection nozzle may be reduced in diameter suddenly at the orifice nozzle (extra-hollow hollow body), but it may be provided with a tapered introduction portion that is expanded upstream toward the upstream side of the orifice nozzle. What has a filter for removing the foreign material in a disinfection liquid and preventing clogging is preferable. The orifice nozzle (ultrafine hollow body) is not particularly limited as long as it is a hollow body having a predetermined length smaller than the inner diameter of the guide pipe. The length is 5 to 100 mm, preferably 10 Hollow body having a diameter of about 50 mm, more preferably about 20 to 40 mm, and an inner diameter of 0.05 to 5 mm, preferably 0.05 to 2 mm, more preferably about 0.1 to 2 mm. As the most preferable specific example, a needle tube of an injection needle that has a fixed standard, can be purchased at low cost, and has almost no variation in processing accuracy can be given. For example, when the flow rate is extremely small such as 1 ml / min, an injection needle (length 30 mm) having an inner diameter of about 0.05 mm may be used, and the flow rate is as small as 1000 ml / min. In that case, the inner diameter may be about 2 mm.

  Further, it is preferable that the orifice nozzle is installed with its outlet directed upward, and if this is provided with a taper-shaped introduction portion whose diameter is increased toward the upstream side, bubbles are further retained. Thus, the bubbles can pass smoothly through the orifice nozzle as needed without growing. Note that the orientation of the outlet of the orifice nozzle upward means that the outlet is oriented within a range of 30 ° on both sides from directly above, and the outlet is preferably oriented within a range of 15 ° on both sides from directly above. Most preferably, the outlet is directed directly above.

  The guide pipe is not particularly limited as long as it is a pipe that communicates the storage tank and the ejection nozzle to guide the liquid sterilant in the storage tank to the ejection nozzle, and preferably has an inner diameter of 1 to 15 mm. Preferably, a guide pipe of 2 to 10 mm is used, and it is preferable to make a part or all of the pipe transparent because it is possible to visually recognize the occurrence of bubbles in the pipe. The guide pipe is preferably provided with a flow rate sensor and a valve, and there is no need to provide a liquid feed pump, a pressure detector, an air chamber, or the like. The flow rate sensor may be any sensor that can detect the flow rate of the sterilizing liquid. The flow rate sensor impinges the measurement fluid on the impeller and converts the rotation speed into a flow rate value. The float in the pipe installed in the vertical direction. The float type that detects the flow rate with the rising degree of the flow, the Karman type that measures the frequency of alternating Karman vortices that occur alternately, the Coriolis force is generated at the inlet and outlet of the flow pipe according to the flow rate, and the pipe Examples include Coriolis type sensors that resist vibration and read the torsion angle generated by electrical signals and convert the flow rate, and electromagnetic type sensors that apply Faraday's law, among others, Coriolis type flow rate sensors such as Coriolis type digital flow rate sensors. A total is preferred. Using a Coriolis type flow meter, mass flow rate can be obtained with a single flow meter; high accuracy; wide flow range and measurement up to 1/100 of maximum flow rate; signals other than flow rate can also be obtained (density, temperature, etc.) ); Quick response; and the like.

  By pressurizing the liquid level of the sterilizing agent in the storage tank with pressurized air from a pressurized air source provided upstream of the storage tank, and transferring the liquid sterilizing agent from the storage tank to the ejection nozzle through the guide pipe No pulsation or negative pressure occurs during feeding. Further, the flow rate of the liquid disinfectant transferred through the guide pipe by the pressurized air is not particularly limited, and can be set to, for example, a flow rate of about 1 to 1000 ml / min. In the liquid feeding / atomizing apparatus, even if the flow rate is about 1 to 100 ml / min, the flow rate of the bactericide can be monitored in real time with high accuracy by the flow rate sensor.

  The other end of the air supply pipe connected in a connected state to the gap formed by the inner pipe and the outer pipe of the ejection nozzle may be connected to the air supply source, but directly or indirectly, It is preferable to connect to a pressurized air source provided upstream from the viewpoints of compactness of the apparatus, cost reduction, and the like. A mode in which the air supply pipe is directly connected to a pressurized air source provided upstream of the storage tank via the regulator (FIG. 1), and the air supply pipe sequentially connects the storage tank (upper space) and the regulator. The mode (FIG. 2) which is indirectly connected to the pressurized air source via can be mentioned. Air pressure is controlled and adjusted by the regulator.

  As described above, as a sterilizing liquid gasification device in which the ejection nozzle for ejecting the sterilizing agent in the liquid feeding and atomizing device of the sterilizing agent of the present invention is disposed in the gasification tank, Patent Document 4 describes. Although the sterilizing liquid gasification device of the horizontal direction spray type and the collision direction spray type described in Patent Document 5 can be exemplified, the disinfectant liquid feeding / atomizing device of the present invention is applied to the collision direction spray type, It is preferable to use as a collision direction ejection type.

  Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic view of a collision-direction jetting type sterilizing liquid gasification apparatus equipped with a liquid feeding / atomizing apparatus of a sterilizing agent according to the present invention in which an air supply pipe is directly connected to a pressurized air source. FIG. 2 is a schematic view of a collision-direction jetting type sterilizing liquid gasification apparatus equipped with a sterilizing agent liquid feeding / atomizing apparatus of the present invention in which an air supply pipe is indirectly connected to a pressurized air source. FIG. 3 is a partially enlarged view of a collision-direction jetting type sterilizing liquid gasification apparatus equipped with the sterilizing liquid feeding / atomizing apparatus of the present invention. FIG. 4 is an enlarged view of an ejection nozzle in the disinfectant feeding / atomizing apparatus of the present invention. FIG. 5 is a partially enlarged view of FIG.

  As shown in FIGS. 1 and 2, the disinfectant feeding / atomizing device of the present invention has a storage tank 3 for storing a liquid disinfectant, and a disinfectant transferred from the storage tank 3 in a mist form. , A guide pipe 12 that communicates the storage tank 3 and the jet nozzle 7 to guide the liquid sterilizer in the storage tank to the jet nozzle 7, a flow rate sensor 4 provided in the guide pipe 12, and storage A pressurized air source 1 is provided upstream of the tank 3 for transferring the liquid disinfectant from the storage tank 3 to the ejection nozzle 7 through the guide pipe 12. Further, as shown in FIGS. 4 and 5, the ejection nozzle 7 has a double pipe structure composed of an inner pipe 17 and an outer pipe 18, and a throttle means for maintaining the inside of the guide pipe on the upstream side at a predetermined pressure. The sterilizing agent is ejected from the inner tube 17 composed of the orifice nozzle functioning as an air nozzle, the air is ejected from the gap between the inner tube 17 and the outer tube 18 communicating with the air supply tube 13, and the sterilizing agent is mist-like by the air. It is ejected into the gasification tank 14 of the gasifier A.

  In FIG. 1, the upstream air pipe 26 directly connected to the pressurized air source 1 branches into two, one connected to the upper part of the storage tank 3 via the regulator 2 and the air pipe 27, and the other connected to the regulator 6. A liquid feeding / atomizing apparatus of the type in which the air supply pipe 13 is connected to the pressurized air source 1 without passing through the storage tank 3 is connected to the air supply pipe 13. The air from the pressurized air source 1 branches from the upstream air pipe 26, one being led to the ejection nozzle 7 by the air supply pipe 13 and the other being led to the storage tank 3 by the air pipe 27. At that time, the pressure is individually controlled by the regulators 2 and 6. The hydrogen peroxide solution in the storage tank is supplied to the ejection nozzle 7 through the flow rate sensor 4 and the valve 5 (on / off of hydrogen peroxide solution) in the guide pipe 12 by the supplied air pressure. If this type of liquid feeding / atomizing device is used, in order to mist (mist) hydrogen peroxide water more efficiently, is the pressure of the air guided to the ejection nozzle 7 equal to the pressure in the storage tank? Or more (pressure to the ejection nozzle ≧ pressure in the tank). For example, the pressure of the pressurized air source: 0.6 MPa, the pressure to the ejection nozzle: 0.3 MPa, the pressure in the storage tank: 0.2 MPa, for example, the pressure in the storage tank: 0.01 The pressure combination can be freely set in the range of -0.3 MPa, pressure to the ejection nozzle: 0.01-0.3 MPa. In this case, the concentration of hydrogen peroxide water can be 0.1 to 35%, and the amount of air supplied to the ejection nozzle can be 0.01 to 0.1 m 3 / min.

  In FIG. 2, the upstream air pipe 26 directly connected to the pressurized air source 1 is connected to the upper part of the storage tank 3 via the regulator 2, and the air supply pipe 13 is connected to the upper part of the same storage tank 3 via the regulator 6. A liquid feeding / atomizing device of the type in which the connected air supply pipe 13 is connected to the pressurized air source 1 via the storage tank 3 is shown. Air from the pressurized air source 1 is guided to the storage tank 3 by the upstream air pipe 26. Further, it is guided from the storage tank 3 to the ejection nozzle 7 through the air supply pipe 13. At that time, the pressure is individually controlled by the regulators 2 and 6. However, the pressure of the air guided to the ejection nozzle 7 is equal to or lower than the pressure in the storage tank (pressure to the ejection nozzle ≦ pressure in the tank). be able to. The hydrogen peroxide solution in the storage tank is supplied to the inner pipe 17 of the ejection nozzle through the flow sensor 4 and the valve 5 (on / off of hydrogen peroxide solution) in the guide pipe 12 by the supplied air pressure. Is done.

  Next, the ejection nozzle 7 will be described in more detail with reference to FIGS. The orifice 23 is fixed to the adapter 21 by a plug 22 together with the filter 15 (sintered metal element). Further, the adapter 21 is fixed to the jet nozzle body 20, and the jet nozzle 7 is fixed to the gasification tank 14 via a flange 19. Air is supplied to the ejection nozzle 7 from an air supply pipe 13 connected by a connector 24, and hydrogen peroxide water is supplied from a guide pipe 12 connected by a connector 25. The supplied hydrogen peroxide solution is discharged from the inner tube 17 (the needle tube of the injection needle) of the ejection nozzle 7 and air is discharged from the gap between the inner tube 17 and the outer tube 18 of the ejection nozzle 7. The discharged hydrogen peroxide solution is atomized in the gasification tank 14 by air.

  As shown in FIGS. 1 to 4, the sterilizing liquid gasification apparatus A (see Patent Document 5) provided with the sterilizing agent feeding / atomizing apparatus of the present invention is a hot air pipe that blows out hot air heated by a heater 16. 8 and a gasification tank 14 having a hydrogen peroxide gas discharge port communicating with the spray means 9. The hydrogen peroxide sprayed in the form of mist from the spray nozzle 7 of the disinfectant feeding / atomizing apparatus of the present invention is gasified in the gasification tank 14 and sprayed in the container 10 which has been transported by the transport conveyor 11. Hydrogen peroxide gas is sprayed from the means (nozzle) 9.

  For reference, a tank pressure (atmospheric pressure of hydrogen peroxide storage tank; MPa) when using the disinfectant liquid feeding / atomizing device of the present invention described in the above embodiment, a needle tube of a 35 mm long injection needle The measured values of the diameter (outer diameter × inner diameter; mm) and the discharge amount of hydrogen peroxide (ml / min) are shown in [Table 1].

  The present invention is useful in the field of packaging and filling foods and beverages.

1 Pressurized air source 2 Regulator 3 Storage tank 4 Flow rate sensor (Coriolis type digital flow rate sensor)
5 Valve 6 Regulator 7 Spray nozzle 8 Hot air tube 9 Spraying means 10 Container 11 Conveyor 12 Guide pipe 13 Air supply tube 14 Gasification tank 15 Filter 16 Heater 17 Inner tube of injection nozzle (needle tube portion of injection needle)
18 Outer nozzle outer tube 19 Flange 20 Injection nozzle body 21 Adapter 22 Plug 23 Orifice (injection needle)
24 connector 25 connector 26 upstream air pipe 27 air pipe A sterilizing liquid gasifier

Claims (6)

A storage tank for storing a liquid disinfectant;
An ejection nozzle that ejects the disinfectant transferred from the storage tank in a mist form;
A guide pipe that communicates the storage tank and the ejection nozzle to guide the liquid disinfectant in the storage tank to the ejection nozzle;
A flow sensor provided in the guide pipe;
Provided upstream of the storage tank, and a pressurized air source for transferring the liquid disinfectant from the storage tank to the ejection nozzle through the guide pipe,
The jet nozzle has a double pipe structure consisting of an inner pipe and an outer pipe, and the sterilizing agent jets from an inner pipe consisting of an orifice nozzle that functions as a throttle means for maintaining the inside of the guide pipe on the upstream side at a predetermined pressure. , air is ejected from the gap between the inner tube and the outer tube communicating with the air supply pipe, jetted fungicide Ri Do the mist by the air,
A disinfectant liquid supply / atomization apparatus characterized by not requiring a liquid supply pump, a pressure detector, and an air chamber . The liquid supply / atomization apparatus for a bactericide according to claim 1, wherein the air supply pipe is connected to a pressurized air source provided upstream of the storage tank via a regulator. The liquid supply / atomization device for a bactericide according to claim 1, wherein the air supply pipe is connected to a pressurized air source through a storage tank and a regulator in sequence. The liquid feeding / atomizing device for a bactericide according to any one of claims 1 to 3, wherein the flow rate sensor is a Coriolis type flow meter. The liquid supply / atomization device for a bactericide according to any one of claims 1 to 4, wherein the orifice nozzle is an ultrafine hollow body utilizing a needle tube portion of an injection needle. It is provided with the liquid feeding / atomizing device for a sterilizing agent according to any one of claims 1 to 5, and an ejection nozzle for ejecting the sterilizing agent in the liquid feeding / atomizing device is disposed in the gasification tank. Characterized by a sterilizing liquid gasifier.

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