CN113398293A

CN113398293A - Preparation facilities of aseptic production of soap

Info

Publication number: CN113398293A
Application number: CN202110639359.3A
Authority: CN
Inventors: 丁爱中; 黄学志; 杨明; 江升建
Original assignee: Anhui Anqing Nanfeng Daily Chemical Co ltd
Current assignee: Anhui Anqing Nanfeng Daily Chemical Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-09-17
Anticipated expiration: 2041-06-08
Also published as: CN113398293B

Abstract

The invention provides a preparation device for aseptic production of soap, which comprises a base, wherein a storage tank, a raw material aseptic processing assembly connected with the discharge end of the storage tank and a grinder connected with the discharge end of the raw material aseptic processing assembly are fixed at the top end of the base; the raw material sterile processing assembly comprises a mixing drum, a first inclined auger with a discharge end connected with the mixing drum, and a second inclined auger with a discharge end connected with the grinding machine, wherein the gas outlet end of the mixing drum is connected with a gas filtering box fixed on the upper surface of the base; the both sides of churn all are equipped with first UV light source and disinfect the mechanism, the inside top is equipped with high-temperature steam and disinfects the mechanism, and inside axis department rotates and is connected with the cavity (mixing) shaft, the inside of cavity (mixing) shaft is equipped with second UV light source and disinfects the mechanism. The invention can sterilize layer by layer in the preparation device, thereby improving the preparation effect of the soap.

Description

Preparation facilities of aseptic production of soap

Technical Field

The invention mainly relates to the technical field of soap production, in particular to a preparation device for aseptic production of soap.

Background

Soap is a general name of fatty acid metal salt and is an essential part in the cleaning process of people, and in the current soap production process, a mechanical preparation device is often used for replacing the traditional manual production mode so as to improve the production efficiency.

According to the patent document with the application number of CN201911116755.7, the soap production preparation facilities that provides can know, this product includes external frame, the supporting legs, the control display screen, the saponification device, soap granule separator and the moulding device of melting, external frame bottom right side is connected with the supporting legs, external frame right-hand member middle part is connected with the control display screen, top middle part is connected with the saponification device in the external frame, left end top is connected with soap granule separator in the external frame, the high standard decoloration of high efficiency is removed the flavor, soap granule extraction rate ninety-eight percent, the high-efficient production lard soap, and the effect that the shaping soap is free of impurities.

However, the soap manufacturing apparatus still has disadvantages, for example, although the manufacturing apparatus can extract soap particles efficiently for manufacturing lard soap, when the soap is manufactured by the conventional soap manufacturing apparatus, especially when the raw material of the soap is stirred, a large amount of raw material contacting with the outside is mixed together, which easily causes bacteria carried by the stirred and produced raw material, thereby affecting the soap manufacturing effect.

Disclosure of Invention

The invention mainly provides a preparation device for aseptic production of soap, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a preparation device for aseptic production of soap comprises a base, wherein a storage tank, a raw material aseptic processing assembly connected with the discharge end of the storage tank and a grinder connected with the discharge end of the raw material aseptic processing assembly are fixed at the top end of the base;

the raw material sterile processing assembly comprises a mixing drum fixed on the upper surface of the base, a first inclined auger with a feeding end connected with the material storage tank and a discharging end connected with the mixing drum, and a second inclined auger with a feeding end connected with the mixing drum and a discharging end connected with the grinding machine, wherein a gas outlet end of the mixing drum is connected with a gas filter box fixed on the upper surface of the base, and a gas outlet end of the gas filter box is connected with gas inlet ends of the first inclined auger and the second inclined auger;

the both sides of churn all are equipped with first UV light source and disinfect the mechanism, the inside top is equipped with high-temperature steam and disinfects the mechanism, and inside axis department rotates and is connected with the cavity (mixing) shaft, the inside of cavity (mixing) shaft is equipped with second UV light source and disinfects the mechanism.

Further, high temperature steam sterilization mechanism is including wearing to locate the lead screw on churn top, the surface of lead screw is fixed with the steam shower nozzle that a plurality of equidistance set up through the screw to drive steam shower nozzle and carry out the translation, with the injection area who increases steam shower nozzle and improve the injection effect.

Further, the high-temperature steam sterilization mechanism further comprises a plurality of steam guide plates which are fixed on the outer surface of the hollow stirring shaft at equal intervals, and the steam guide plates and steam sprayed by the steam spray heads collide with each other to change the atomization effect of the steam spray heads, so that the sterilization effect of the steam spray heads is improved.

Further, first UV light source sterilization mechanism is including being fixed in the cover that is in the light of churn surface is fixed in first sterilamp on the cover inner wall that is in the light to and imbed in first light trap on the churn outer wall, be fixed with on the cover inner wall that is in the light with first sterilamp is the reflector that the central axis symmetry set up for the produced ultraviolet ray of first sterilamp can pass first light trap and shine into the churn, and then disinfects to the inside raw materials of churn from the outside.

Furthermore, second UV light source sterilization mechanism is including being fixed in the inside second sterilamp of cavity (mixing) shaft, and imbed in second light trap on the cavity (mixing) shaft outer wall for the produced ultraviolet light source of the inside second sterilamp of cavity (mixing) shaft can pass second light trap, shines to the churn inside and disinfects.

Further, the inside of gas filtration case is fixed with ceramic filter and carbon fiber filter in proper order by income gas end to the end of giving vent to anger, the inner wall of gas filtration case is fixed with a plurality of heating copper pipes, filters layer upon layer through ceramic filter and carbon fiber filter and carries out further filtration sterilization.

Further, the discharge end of storage tank is fixed with the discharging pipe, be fixed with a plurality of valve bodies on the discharging pipe casing, the business turn over of its inside raw materials of valve body control on through the discharging pipe guides its inside raw materials to first oblique auger through the discharging pipe and discharges.

Further, the income gas end of gas filtration case is connected with negative-pressure air fan, the end of giving vent to anger is connected with the air compression pump, the end of giving vent to anger of air compression pump is connected with the gas distribution valve, negative-pressure air fan's income gas end through the ventilation pipe with the bottom of churn is connected, the gas distribution valve with the discharging pipe is connected, through inside negative-pressure air fan with the leading-in to gas filtration incasement of churn inside raw materials, leads high temperature air through the gas distribution valve and shunts.

Further, the bottom mounting of gas filter box has the high temperature steam chamber, the inside of high temperature steam chamber is fixed with a plurality of check valves, the end of giving vent to anger of high temperature steam chamber pass through the hose with steam nozzle is connected, heats through the inside heater of high temperature steam chamber to the work of disinfecting is exported inside steam nozzle with its inside high temperature air to the air pump that is connected with high temperature steam chamber.

Furthermore, the inside of storage tank is fixed with the third UV light source that the mechanism structure is the same disinfects with the second UV light source mechanism for the storage tank disinfects through the third UV light source that its inside and second UV light source mechanism structure is the same disinfects the mechanism and disinfects.

Compared with the prior art, the invention has the beneficial effects that:

firstly, the invention can carry out layer-by-layer sterilization in the preparation device, thereby improving the preparation effect of the soap, and specifically comprises the following steps: because the high temperature steam chamber is connected with the high temperature steam sterilization mechanism in the churn, thereby utilize the inside of high temperature steam sterilization mechanism looks churn to spray high temperature steam in order to disinfect to the churn is inside, and the high temperature sterile air in the gas filtering case flows through first oblique auger, churn, the oblique auger of second and the machine of grinding in proper order, thereby utilize high temperature sterile air to blow dry fast the inside of first oblique auger, churn, the oblique auger of second and machine of grinding, and disinfect with the help of high temperature air.

Secondly, the invention can sterilize the interior of the mixing drum which is mixed by a plurality of raw materials and is easy to generate bacteria layer by layer, thereby generating an aseptic environment in the mixing drum, and specifically comprises the following steps: because the outside both sides of storage tank are equipped with first UV light source sterilization mechanism, and inside axis department is equipped with second UV light source sterilization mechanism to when utilizing first UV light source sterilization mechanism to disinfect to the storage tank from the outside, utilize second UV light source sterilization mechanism to cooperate first UV light source sterilization mechanism to disinfect from inside.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is an exploded view of the mixing drum of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is an isometric view of the present invention;

FIG. 6 is a right side view of the present invention;

FIG. 7 is a front view of the present invention;

FIG. 8 is a cross-sectional view of the mixing drum of the present invention.

In the figure: 10. a base; 20. a material storage tank; 21. a third UV light source sterilization mechanism; 22. a discharge pipe; 23. a third UV light source sterilization mechanism; 30. a raw material aseptic processing assembly; 31. a mixing drum; 311. a hollow stirring shaft; 312. a high-temperature steam sterilization mechanism; 3121. a screw rod; 3122. a steam spray head; 3123. a steam guide plate; 313. a second UV light source sterilization mechanism; 3131. a second ultraviolet germicidal lamp; 3132. a second light transmissive window; 314. a first UV light source sterilization mechanism; 3141. a light blocking cover; 3142. a reflective mirror; 3143. a first ultraviolet germicidal lamp; 3144. a first light transmissive window; 32. a first inclined auger; 33. a second inclined auger; 34. a gas filter tank; 341. a carbon fiber filter plate; 342. a ceramic filter plate; 343. heating the copper pipe; 344. a negative pressure fan; 345. an air compression pump; 346. a gas distribution valve; 347. a high temperature steam chamber; 3471. a one-way valve; 40. and (4) grinding the materials.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 8, in a preferred embodiment of the present invention, a device for preparing soap in an aseptic manner comprises a base 10, a storage tank 20, a raw material aseptic processing assembly 30 connected to a discharge end of the storage tank 20, and a grinder 40 connected to a discharge end of the raw material aseptic processing assembly 30 are fixed to a top end of the base 10;

the raw material sterile processing assembly 30 comprises a mixing drum 31 fixed on the upper surface of the base 10, a first inclined auger 32 with a feeding end connected with the storage tank 20 and a discharging end connected with the mixing drum 31, and a second inclined auger 33 with a feeding end connected with the mixing drum 31 and a discharging end connected with the grinder 40, wherein the gas outlet end of the mixing drum 31 is connected with a gas filter box 34 fixed on the upper surface of the base 10, and the gas outlet end of the gas filter box 34 is connected with the gas inlet ends of the first inclined auger 32 and the second inclined auger 33;

a first UV light source sterilization mechanism 314 is arranged on each of two sides of the stirring drum 31, a high-temperature steam sterilization mechanism 312 is arranged at the top end of the inner part of the stirring drum, a hollow stirring shaft 311 is rotatably connected to the inner axis, and a second UV light source sterilization mechanism 313 is arranged inside the hollow stirring shaft 311;

in the embodiment, after the worker injects the raw material into the storage tank 20, the raw material enters the first inclined auger 32 from the storage tank 20, and enters the stirring drum 31 under the pulling of the first inclined auger 32 for stirring, the uniformly mixed raw material is conveyed to the grinder 40 by the second inclined auger 33 connected with the stirring drum 31 for subsequent hot melt forming, in the process, because the gas outlet end of the gas filtering box 34 is connected with the gas inlet ends of the first inclined auger 32 and the second inclined auger 33, the high-temperature sterile air in the gas filtering box 34 sequentially flows through the first inclined auger 32, the stirring drum 31, the second inclined auger 33 and the grinder 40, so that the interiors of the first inclined auger 32, the stirring drum 31, the second inclined auger 33 and the grinder 40 are quickly dried by the high-temperature sterile air, and the high-temperature sterile air is used for sterilization;

further, because the outside both sides of storage tank 20 are equipped with first UV light source sterilization mechanism 314, and inside axis department is equipped with second UV light source sterilization mechanism 313 to when utilizing first UV light source sterilization mechanism 314 to disinfect storage tank 20 from the outside, utilize second UV light source sterilization mechanism 313 to cooperate first UV light source sterilization mechanism 314 to disinfect from inside.

Specifically, please refer to fig. 1 and 2 again, in another preferred embodiment of the present invention, the high temperature steam sterilization mechanism 312 includes a screw rod 3121 penetrating the top end of the stirring cylinder 31, a plurality of steam nozzles 3122 equidistantly disposed are fixed on the outer surface of the screw rod 3121 through nuts, and the high temperature steam sterilization mechanism 312 further includes a plurality of steam guide plates 3123 equidistantly fixed on the outer surface of the hollow stirring shaft 311;

it should be noted that, in this embodiment, the inside of the mixing drum 31 is sterilized by the high-temperature steam sprayed from the steam nozzle 3122, so that when the lead screw 3121 is driven by the motor connected thereto to rotate, since the steam nozzle 3122 is connected to the lead screw 3121 through a nut, the steam nozzle 3122 converts the rotary motion of the lead screw 3121 into its own linear motion through the nut, so as to drive the steam nozzle 3122 to translate, thereby increasing the spraying area of the steam nozzle 3122 and improving the spraying effect;

further, make steam shower 3122 remove under the drive of lead screw 3121, and the motor that is connected with hollow (mixing) shaft 311 is through its photoelectric switch for steam deflector 3123 rotates to when being aligned with steam shower 3122, through steam deflector 3123 and steam shower 3122 spun steam clash mutually, in order to change steam shower 3122's atomization effect, thereby improve steam shower 3122's bactericidal effect.

Specifically, please refer to fig. 2, 3 and 8 again, in another preferred embodiment of the present invention, the first UV light source sterilization mechanism 314 includes a light-blocking cover 3141 fixed on the outer surface of the mixing drum 31, a first UV sterilization lamp 3143 fixed on the inner wall of the light-blocking cover 3141, and a first light-transmitting window 3144 embedded on the outer wall of the mixing drum 31, reflectors 3142 symmetrically arranged with the first UV sterilization lamp 3143 as the central axis are fixed on the inner wall of the light-blocking cover 3141, the second UV light source sterilization mechanism 313 includes a second UV sterilization lamp 3131 fixed inside the hollow mixing shaft 311, and a second light-transmitting window 3132 embedded on the outer wall of the hollow mixing shaft 311;

in this embodiment, since the first ultraviolet germicidal lamp 3143 on the light blocking cover 3141 is aligned with the first light-transmitting window 3144 embedded in the outer surface of the mixing drum 31, ultraviolet rays generated by the first ultraviolet germicidal lamp 3143 can pass through the first light-transmitting window 3144 and irradiate into the mixing drum 31, and further, raw materials inside the mixing drum 31 are sterilized from the outside;

further, the ultraviolet light source generated by the second ultraviolet germicidal lamp 3131 inside the hollow stirring shaft 311 can pass through the second light-transmitting window 3132 and irradiate to the inside of the stirring cylinder 31, and then the ultraviolet light source is emitted from the inner axis of the stirring cylinder 31 to be sterilized by matching with the first ultraviolet germicidal lamp 3143 outside.

Specifically, please refer to fig. 2, 4 and 6 again, in another preferred embodiment of the present invention, a ceramic filter plate 342 and a carbon fiber filter plate 341 are sequentially fixed inside the gas filter box 34 from a gas inlet end to a gas outlet end, a plurality of heating copper pipes 343 are fixed on the inner wall of the gas filter box 34, the gas inlet end of the gas filter box 34 is connected to a negative pressure fan 344, the gas outlet end is connected to an air compression pump 345, the gas outlet end of the air compression pump 345 is connected to a gas distribution valve 346, the gas inlet end of the negative pressure fan 344 is connected to the bottom end of the mixing drum 31 through a vent pipe, and the gas distribution valve 346 is connected to the discharge pipe 22;

in this embodiment, the air entering the gas filtering tank 34 is sterilized at high temperature by the high temperature generated by heating the copper pipe 343, and is further filtered and sterilized by the layer-by-layer filtering of the ceramic filter plate 342 and the carbon fiber filter plate 341;

further, the gas filter box 34 is caused to compress and discharge high-temperature air therein by an upper air compression pump 345, the raw material inside the agitating drum 31 is introduced into the gas filter box 34 by a negative pressure fan 344, and the high-temperature air is guided to be branched by a gas distribution valve 346.

Specifically, please refer to fig. 2, 4 and 6 again, in another preferred embodiment of the present invention, a discharge pipe 22 is fixed to a discharge end of the storage tank 20, a plurality of valve bodies 21 are fixed to a casing of the discharge pipe 22, and a third UV light source sterilization mechanism 23 having the same structure as the second UV light source sterilization mechanism 313 is fixed to the interior of the storage tank 20;

in the embodiment, the material storage tank 20 controls the feeding and discharging of the raw material inside through the valve body 21 on the material discharge pipe 22, and the raw material inside is guided to the first inclined auger 32 through the material discharge pipe 22 and discharged;

further, the storage tank 20 is sterilized by a third UV light source sterilization mechanism 23 having the same structure as the second UV light source sterilization mechanism 313.

Specifically, please refer to fig. 2, 4 and 6 again, in another preferred embodiment of the present invention, a high temperature steam chamber 347 is fixed at the bottom end of the gas filtering box 34, a plurality of check valves 3471 are fixed inside the high temperature steam chamber 347, and the air outlet end of the high temperature steam chamber 347 is connected to the steam nozzle 3122 through a hose;

in this embodiment, water droplets dropping due to evaporation inside the gas filtering box 34 are collected by the high temperature steam chamber 347, and then heated by the heater inside the high temperature steam chamber 347, so that the air pump connected to the high temperature steam chamber 347 outputs high temperature air inside the high temperature steam chamber 347 to the inside of the steam nozzle 3122 for sterilization, and the check valve 3471 prevents water inside the high temperature steam chamber 347 from overflowing when a worker adds water into the high temperature steam chamber 347;

further, set up the condensation dish in gas filtration case 34 is inside, the condensation of moisture in the gas filtration case 34 with higher speed, and the runner department that supplies the water droplet between gas filtration case 34 and high temperature steam chamber 347 sets up the carbon fiber filter block and carries out the edulcoration, reduces secondary pollution.

The specific operation mode of the invention is as follows:

when the soap is produced by using the preparation device, a worker firstly injects raw materials into the storage tank 20, the raw materials enter the first inclined auger 32 from the storage tank 20 and enter the stirring cylinder 31 under the lifting action of the first inclined auger 32 for stirring, the uniformly mixed raw materials are conveyed into the grinder 40 by the second inclined auger 33 connected with the stirring cylinder 31 for subsequent hot melting and forming, in the process, as the air outlet end of the gas filter box 34 is connected with the air inlet ends of the first inclined auger 32 and the second inclined auger 33, high-temperature sterile air in the gas filter box 34 sequentially flows through the first inclined auger 32, the stirring cylinder 31, the second inclined auger 33 and the grinder 40, so that the interiors of the first inclined auger 32, the stirring cylinder 31, the second inclined auger 33 and the grinder 40 are quickly dried by the high-temperature sterile air, and the high-temperature air is used for sterilization;

because the outside both sides of storage tank 20 are equipped with first UV light source mechanism 314 that disinfects, inside axis department is equipped with second UV light source sterilization mechanism 313 to when utilizing first UV light source sterilization mechanism 314 to disinfect storage tank 20 from the outside, utilize second UV light source sterilization mechanism 313 to cooperate first UV light source sterilization mechanism 314 to disinfect from inside.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. A preparation device for aseptic production of soap comprises a base (10), and is characterized in that a storage tank (20), a raw material aseptic processing assembly (30) connected with the discharge end of the storage tank (20), and a grinder (40) connected with the discharge end of the raw material aseptic processing assembly (30) are fixed at the top end of the base (10);

the raw material sterile processing assembly (30) comprises a stirring cylinder (31) fixed on the upper surface of the base (10), a first inclined auger (32) with a feeding end connected with the storage tank (20) and a discharging end connected with the stirring cylinder (31), and a second inclined auger (33) with a feeding end connected with the stirring cylinder (31) and a discharging end connected with the grinding machine (40), wherein the gas outlet end of the stirring cylinder (31) is connected with a gas filtering box (34) fixed on the upper surface of the base (10), and the gas outlet end of the gas filtering box (34) is connected with the gas inlet ends of the first inclined auger (32) and the second inclined auger (33);

the two sides of the mixing drum (31) are provided with a first UV light source sterilization mechanism (314), the top end of the interior of the mixing drum is provided with a high-temperature steam sterilization mechanism (312), the axis of the interior of the mixing drum is rotatably connected with a hollow mixing shaft (311), and the interior of the hollow mixing shaft (311) is provided with a second UV light source sterilization mechanism (313).

2. The device for preparing the soap in an aseptic manner according to claim 1, wherein the high-temperature steam sterilization mechanism (312) comprises a screw rod (3121) which is arranged at the top end of the stirring cylinder (31) in a penetrating manner, and a plurality of steam spray nozzles (3122) which are arranged at equal intervals are fixed on the outer surface of the screw rod (3121) through nuts.

3. The apparatus for preparing soap in aseptic production according to claim 1, wherein said high temperature steam sterilizing means (312) further comprises a plurality of steam guide plates (3123) fixed equidistantly on the outer surface of said hollow stirring shaft (311).

4. The device for preparing the soap in an aseptic manner according to claim 1, wherein the first UV light source sterilization mechanism (314) comprises a light blocking cover (3141) fixed on the outer surface of the stirring cylinder (31), a first ultraviolet sterilization lamp (3143) fixed on the inner wall of the light blocking cover (3141), and a first light-transmitting window (3144) embedded in the outer wall of the stirring cylinder (31), and reflectors (3142) symmetrically arranged by taking the first ultraviolet sterilization lamp (3143) as a central axis are fixed on the inner wall of the light blocking cover (3141).

5. The apparatus for preparing soap in aseptic production according to claim 1, wherein the second UV light source sterilization mechanism (313) comprises a second UV sterilization lamp (3131) fixed inside the hollow stirring shaft (311), and a second light-transmitting window (3132) embedded in the outer wall of the hollow stirring shaft (311).

6. The apparatus for preparing soap in an aseptic manner according to claim 1, wherein a ceramic filter plate (342) and a carbon fiber filter plate (341) are sequentially fixed inside the gas filter box (34) from a gas inlet end to a gas outlet end, and a plurality of heating copper pipes (343) are fixed on the inner wall of the gas filter box (34).

7. The device for preparing the soap in an aseptic manner as claimed in claim 6, wherein a discharge pipe (22) is fixed to the discharge end of the storage tank (20), and a plurality of valve bodies (21) are fixed to the shell of the discharge pipe (22).

8. The preparation device for the aseptic production of soap according to claim 7, wherein the air inlet end of the air filter box (34) is connected with a negative pressure fan (344), the air outlet end is connected with an air compression pump (345), the air outlet end of the air compression pump (345) is connected with an air distribution valve (346), the air inlet end of the negative pressure fan (344) is connected with the bottom end of the mixing drum (31) through a vent pipe, and the air distribution valve (346) is connected with the discharge pipe (22).

9. The device for preparing the aseptic soap production according to claim 2, wherein a high temperature steam chamber (347) is fixed at the bottom end of the gas filtering box (34), a plurality of one-way valves (3471) are fixed inside the high temperature steam chamber (347), and the air outlet end of the high temperature steam chamber (347) is connected with the steam nozzle (3122) through a hose.

10. The apparatus for preparing soap in an aseptic manner as claimed in claim 1, wherein a third UV light source sterilization mechanism (23) having the same structure as the second UV light source sterilization mechanism (313) is fixed inside the storage tank (20).