KR20140131078A - Chemical Container Capable of Detecting Level of Content - Google Patents

Abstract

The present invention relates to a chemical container capable of detecting a level of content and specifically to a chemical container capable of detecting a level of content which can guarantee safety in preserving and supplying the content while it can detect the level of the content therein by using a sensor. The chemical container includes a storage body (11) within which a liquid can be stored; an upper body (12) formed at an upper part of the storage body (11) and installing a connection unit; a fit ferrule unit (13) formed on an upper surface of the upper body (12); at least one joint plane (123) formed on the upper surface of the upper body (12); and a skirt (15) coupled to a lower part of the storage body (11), wherein the fit ferrule unit (13) is made of a fixated unit (131) and a sealed ring (133) coupled to the fixated unit (131), and the fixated unit (131) is coupled to a polygonal nut (134) or a flange (43).

Description

Technical Field [0001] The present invention relates to a chemical container capable of detecting the level of contents,

The present invention relates to a chemical container capable of detecting the level of contents, and more particularly, to a chemical container capable of detecting the level of the contents inside the container by means of a sensor, To a possible chemical vessel.

Containers complying with established standards for the storage or transportation of chemicals or dangerous solutions shall be used and containers meeting various specifications or specifications shall be used. Various chemicals or hazardous materials may have structural characteristics that are appropriate for their respective characteristics, since they have different types of risks. There may also be common characteristics required for chemicals or hazardous materials. These common characteristics are mainly related to handling stability or hermeticity depending on the structure. On the other hand, it is advantageous for the chemical container to have additional features for handling stability or functionality while meeting specified specifications or specifications.

Containers for the storage or transport of chemicals or dangerous materials should have basically airtightness and ease of handling due to movement of the containers and supply or discharge of contents. Also, it should have a structure that can basically prevent leakage. In addition, in the case of the chemical container used in the chemical industry or the medical industry, it is advantageous that the substance contained in the chemical container is supplied from the sealed state to the outside so that the amount remaining inside the chemical container can be confirmed.

Prior art relating to the storage of dangerous materials is disclosed in Korean Patent Publication No. 2004-0066128, entitled " Container Device for Storing Dangerous Materials and Method of Manufacturing the Container Device ". The prior art includes a substantially cylindrical container block and the container block comprises a set of reservoirs for hazardous materials having a central axial circumferential through passage and located between the passage and the circumferential surface of the container block, In addition, a dangerous material, particularly a radiation for a nuclear reactor, constructed in a configuration that also includes a cylindrical concrete body surrounding this group of storage containers, is a container device for storing a heat generating material such as a fuel, And the wall of the central passage is formed mainly by the circumferential surface section of adjacent storage vessels, and the concrete body is directly connected to the storage vessels at substantially all of the circumferential surfaces of the storage vessels which do not constitute the circumferential surface section And a container device for contacting the container.

On the other hand, Patent Document No. 2010-0071600 " Chemical Solution Storage Device " is a prior art related to the storage of the chemical solution and the detection of the internal volume.

The prior art includes a single float sensor having a plurality of contact members corresponding to the level points for sensing the level of the chemical solution stored in the chemical solution storage tank, Storage device.

The prior art related to the prior art or known chemical containers has a problem in that it is difficult to accurately measure the chemical remaining in the interior while the structural stability and the efficiency of the storage space are low.

The present invention has been made to solve the problems of the prior art and has the following purpose.

It is an object of the present invention to provide a chemical container capable of detecting the remaining amount while having storage efficiency and handling stability.

According to a preferred embodiment of the present invention, a chemical container comprises: a storage body in which a liquid can be received; An upper body formed on the upper portion of the storage body and provided with a connection unit; A ferrule unit formed on the upper surface of the upper body; At least one joint plane formed on the upper surface of the upper body; And a skirt coupled to a lower portion of the storage body, wherein the ferrule unit comprises a sealing ring coupled to a fixed unit and a fixed unit, and wherein a polygonal nut is coupled to the fixed unit or a flange is coupled.

According to another preferred embodiment of the present invention, there is further provided a level sensor capable of detecting the level of contents through a fixed unit, the level sensor comprising: a level load; And a joint module capable of being coupled to the at least one floater, the port jack, and the protruding unit installed so as to be movable up and down along the level load.

According to another preferred embodiment of the present invention, a converging region is formed on the bottom surface of the storage body.

According to another preferred embodiment of the present invention, at least one connector unit fixed to the joint plane is further included, and the hydraulic sensor or the valve unit can be coupled to the connector.

According to another preferred embodiment of the present invention, the height between the bottom surface of the skirt and the upper end of the storage body is 355 mm +/- 10 mm, or the inner diameter of the storage body is 229.5 mm +/- 10 mm, 14 mm ± 2 mm.

The chemical container according to the present invention has an advantage that it is easy to handle and has structural safety. In addition, the chemical container according to the present invention has an advantage that detection of the remaining amount of the chemical container can be easily detected. In addition, the chemical container according to the present invention has an advantage that the purity of the contents is maintained by the electrolytic polishing of the inside of the chemical container. Further, the chemical container according to the present invention has an advantage that it can be applied to various fields such as a medical sanitary solution, a cleaning solution of a semiconductor process or a cleaning process of a touch screen panel.

1 shows an embodiment of the outer structure of a chemical container according to the present invention.
Figure 2 illustrates an embodiment of a level sensor for detecting the amount of storage solution in a chemical vessel according to the present invention.
3A and 3B show another embodiment of the chemical container according to the present invention.
4A and 4B show another embodiment of the chemical container according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of the outer structure of a chemical container according to the present invention.

Referring to FIG. 1, a chemical container capable of detecting the level of contents includes a storage body 11 in which a liquid can be received; An upper body 12 formed on the upper part of the storage body 11 and having a connection unit installed therein; A fit ferrule unit 13 formed on the upper surface of the upper body 12; At least one joint plane (123) formed on the upper surface of the upper body (12); And a skirt 15 coupled to the lower portion of the storage body 11. The ferrule unit 13 is composed of a sealing ring 133 coupled to the fixed unit 131 and the fixed unit 131, The polygonal nut 134 is coupled to the unit 131 or the flange 43 is engaged.

The chemical container according to the present invention can be used in the field of storing and supplying any chemical substance which can be prevented from micro leakage which may occur at the connection site during storage, . For example, the chemical container 10 according to the present invention can be used in industry related to the handling of medical cleaning liquids, cleaning liquids for semiconductor processes or other hazardous materials. Various forms of liquid may be stored and the invention is not limited by the liquid to be stored or the field in which it is used.

The storage body 11 may be cylindrical or cylindrical in stainless steel, but may be formed in various shapes as required. The thickness of the storage body 11 can be set appropriately according to the material to be handled or the use.

The upper body 12 may be manufactured separately from the storage body 11 or may be manufactured independently and joined by means such as welding. The upper body 12 can be integrally formed with the storage body 11 as a whole. The upper body 12 may be formed in various shapes, but the upper surface may have a convex curved shape as a whole, and the lower portion may have the same or similar shape as the storage body 12.

A connector unit 124 may be provided in the upper plane of the upper body 12 so that at least one drain tube and an external supply device can be connected. The connector unit 124 may have a suitable structure capable of being coupled with the supply valve unit 126 corresponding to the external supply unit. For example, the connector unit 124 may consist of a fastening portion 124a and a sealing ring 124b, which are made up of an extension of the exhaust tube and a connecting nut. The coupling portion 124a may be connected to the supply valve unit 126 to be leakproofed by a sealing ring 124b made of a material such as Teflon, ethylene propylene diene monomer (EPDM), or neoprene have.

The extension portion of the discharge tube may have a structure passing through the joint plane 123 and the joint plane 123 may be made a structure parallel to the ground. Specifically, the joint plane 123 may be formed to have a size that is at least one to two times to ten times as large as the cross-sectional area of the connector unit 124 so as to be entirely circular with respect to the center portion where the ferrule unit 13 is formed. At the same time, the joint plane 123 can be formed to be perpendicular to the extending direction of the storage body 11 or the extending direction of the discharge tube. Therefore, the joint plane 123 with respect to the upper body 12, which has a generally convex curved shape, can be formed into an L shape from the inside to the outside. This shape of the joint plane 123 makes the entire lower plane of the fastening portion 124a, for example, having a nut shape, abut the joint plane 123. At the same time, a flat plane parallel to the ground or perpendicular to the longitudinal direction of the storage body 11 is formed on the convex curved surface of the upper body 12 due to the above-mentioned shape so that a stepped surface is formed. This allows the discharge tube extending below the fastening portion 124a or the interior of the storage body 11 to be parallel to the longitudinal direction of the storage body 11 while at the same time facilitating the connection by welding or other coupling means do. It is possible to prevent the liquid component, which may leak outwardly in the connection or other process, from flowing along the upper plane of the upper body 12. [ The joint plane 123 may be at least one and may be formed to an appropriate size in consideration of the overall size of the upper plane of the upper body 12. [

The ferrule unit 13 may be formed at the center portion of the upper body 12. [ In this specification, the ferrule unit 13 refers to a structure in which a seal lid or a stopper having a connector or joint function capable of being connected from an external supply, exhaust to the outside, or other device in an airtight structure can be combined. For example, a supply valve may be connected to the ferrule unit 13 to supply the chemical into the storage body 11, and the sensor unit may be coupled through the ferrule unit 13 to detect the same level of contents have. The ferrule unit 13 according to the present invention may be formed of a stainless steel material, a ceramic material or a plastic material, and may include a nut, a sealing ring or a cap for tightening or coupling. 1, the ferrule unit 13 includes a fixed unit 131 projecting in a cylindrical shape from a central portion of the upper plane of the upper body 12, a sealing ring 133 coupled to the fixed unit 131, A sealing cap 132 coupled to an upper portion of the ring 133 and a polygonal nut 134 for fixing the sealing cap 132. [ The fixing unit 131 can be made of a material which can be hollow cylindrical and can have an external thread forming surface and has a slight elasticity. The sealing cap 132 may have a portion to be inserted into the fixing unit 131 if it has a small diameter and may be coupled to the lower portion of the sealing ring 133. And the polygonal nut 134 may be formed to be engaged from above the fixed unit 131 to tighten the sealing cap 132. [ Due to such a structure, the ferrule unit 13 completely seals the chemical container 10. For example, the fixed unit 131 may be made of stainless steel, and the polygonal nut 134 and the sealing cap 132 may be made of a stainless steel material having a larger hardness than the fixed unit 131. The fixing unit 131 having elasticity can be firmly fixed between the polygonal nut 134 and the sealing cap 132 by firmly tightening the polygonal nut 134.

Alternatively, the flange may be coupled to the fixed unit 131. The manner in which the ferrule unit 13 is made into a flange structure will be described below again.

The chemical container 10 is required to be transported in the course of handling, and the handle 14 may be provided for this purpose. The handle 14 can be made in various forms, but as shown in FIG. 1, it can include a circular moving member 142 connecting the plurality of height members 141 and the end of the height member 141 have. One end of each of the height members 141 may be welded while contacting the upper portion of the storage body 11 and the upper body 122. This type of welding has the advantage of making the overall structure stable. Another function of the height member 14 is to protect the connector unit 124 formed in the upper plane of the upper body 12 or other valve unit for supply and discharge. Specifically, the height member 14 can be at least three and is preferably higher than the connector unit 124 formed on the upper surface of the upper body 12, and is preferably a valve unit (not shown) coupled to the connector unit 124 or the ferrule unit 13 As shown in FIG. Due to such a structure, the connector unit 124 and the ferrule unit 13 can be protected or the valve unit coupled thereto can be protected. Considering such a function of the handle 14, it is advantageous that the number of the height members 141 is large, but the handling is difficult. Therefore, the number of the height members 141 can be, for example, 3 to 6.

The handle 14 can be made in various configurations and the present invention is not limited to the embodiments shown.

A skirt 15 functioning as a pedestal can be coupled to the lower side of the storage body 11. The skirt 15 may be made independently and joined to the lower side of the storage body 11 and made of a material such as stainless steel or rubber.

The liquid stored in the chemical vessel 10 according to the present invention can be supplied to the process by a supply valve device connected to the connector unit 124. [ The supply valve device may include, for example, a supply valve unit 126 having a maintenance valve assembly structure or a three-way valve unit 161, but the present invention is not limited thereto.

The supply valve unit 126 may be secured to the connector unit 124 by a fitting lock 125 and the locking means 125 may be secured to the connector unit 124 by fastening devices such as screws or clamps, And a pair of locking pieces that are coupled to each other. Such as a gasket, may be provided at the mating portion of the supply valve unit 126 and the connector unit 124. Specifically, the supply valve unit 126 may include a sealing ring 126a, a cap 126b and a connecting joint 126c . On the other hand, the three-way valve 161 includes a supply joint 161a which can be fixed to two different connector units 124, a cap 161b for sealing the discharge port formed in the supply joint 161a, 161c.

A supply valve unit 126 or a three-way valve 161 having various structures can be coupled to the connector unit 124 and the present invention is not limited to the embodiments shown.

It is advantageous that the amount of the chemical solution stored in the chemical vessel 10 according to the present invention can be detected from the outside while maintaining the sealed state. The internal volume of the chemical vessel 10 needs to be detected during the supply, storage and discharge processes.

The amount of the internal solution in the chemical vessel 10 can be measured, for example, by a device such as a load cell or a pressure sensor. For example, a load cell can be an electrical weight system that measures the change in the resistance value of a strain gauge. The amount of the internal solution can be detected by detecting the weight change by the load cell in the chemical vessel 10 according to the present invention. On the other hand, the measurement of the internal quantity by the pressure sensor is also possible and the measurement by the pressure sensor can be made, for example, by way of connecting the pressure sensor to the connector unit 124, but is not limited thereto.

Another method of measuring the amount of internal solution in the chemical vessel 10 is to use a level sensor.

Hereinafter, a level sensor applicable to the chemical container according to the present invention will be described.

Figure 2 shows an embodiment of a level sensor 20 for enabling the amount of storage solution in a chemical vessel according to the invention to be detected.

2, the level sensor 20 includes a level rod 21 extending in a bar shape, at least one floater 23a, 23b installed so as to be movable up and down along the level rod 21, Stoppers 211a and 211b for restricting up-and-down movement according to the level rods 21 of the control units 23a and 23b and a joint module 22 capable of being coupled to the fixed unit 131 and a port jack 25 ). In addition, the level sensor 20 may include a fixing bracket 24 for fixing the floaters 23a, 23b in a predetermined position.

The level rod 21 can be appropriately set in consideration of the length of the storage body and can be made of a conductor or nonconductor. The level rod 21 can be made of stainless steel and can be a corrosion resistant coating if desired. When made of non-conductive material, the level rod 21 may be coated with a material such as, for example, fluororesin or neoprene.

The floaters 23a and 23b may be at least one, and the floaters 23a and 23b may be vertically movable according to the level of contents. Alternatively, the floaters 23a and 23b may be fixed at predetermined positions or the specific floaters 23a and 23b may be fixed at predetermined positions. The plotters 23a and 23b can be installed in various ways, and the present invention is not limited to the embodiments shown.

The vertical movement of the floaters 23a and 23b can be restricted by the stoppers 211a and 211b and the stoppers 211a and 211b can be fixed removably from the level rod 21. [ As shown in Fig. 2, each of the floaters 23a and 23b can be installed so as to be movable between the two stoppers 211a and 211b. The joint module 22 may have a structure that can be coupled to the ferrule unit or the fixed unit 131 and specifically the joint module 22 may extend under the lead 221 and the lead 221, A fastening portion 222b having a screw on its surface and an extending portion 222 extending upwardly of the lead 221. [ The lid 221 has the function of a cover of the fastening portion (see FIG. 1), the fastening portion 222b has the function of a connector, and the extension portion 222 can have the function of a handle, for example. A sealing ring 221 may be provided on the fastening portion 222b as necessary. When the joint module 22 is coupled to the fixed part, the level sensor 20 can be firmly fixed to the ferrule unit by the polygonal nut.

The port jack 25 can be connected to the signal cable 26 and the signal cable 26 can be connected to any position of the level rod 21 via the upper part of the joint module 22. [ The signal cable 26 may be composed of a plurality of wires and each wire may be connected to a specific position of the floaters 23a and 23b, the stoppers 211a and 211b or the level rod 21.

The stoppers 211a and 211b can be fixed at various positions and values such as resistance or capacitance can be changed according to the up and down movement of the floaters 23a and 23b, Lt; RTI ID = 0.0 > 25 < / RTI > For example, one float 23a may be installed at a position where the internal water level is 80% of the total height, and the other float 23b may be installed at a position where the internal water level is 50% of the total height.

When the water level is changed during the supply of the chemical solution stored in the storage body, the signal can be detected at the position where the water level is 80% at first and the signal can be detected again at the position where the water level is 50% secondarily. A signal can be detected for a certain period of time due to the movement of the floats 23a and 23b and such a signal can be transmitted to the port jack 25 along the signal cable 26. [ The port jack 25 can transmit the transmitted signal back to the control device.

Detection levels can be determined in various ways and the invention is not limited to the embodiments shown.

Another embodiment of the chemical container according to the present invention will be described below.

3A and 3B show another embodiment of the chemical container according to the present invention.

In the present specification, the same reference numerals denote different elements having the same or similar functions. Therefore, it is not repeatedly explained unless necessary for the sake of brevity of explanation.

3A, the number of joint planes 123 may be a plurality and the connector unit 124 may not be provided in the joint plane 123 depending on the use of the chemical container 10. [ The joint plane 123 may have an overall circular cross-section, but is not limited thereto and may have various shapes. The joint plane 123 may be a plane parallel to the ground or a plane perpendicular to the longitudinal direction of the storage body 11.

The connector units 124a and 124b may be used for different purposes. For example, the first connector unit 124a may be used to regulate the internal pressure or to measure the internal pressure, and the second connector unit 124b may be used for the discharge of the chemical solution stored therein. The connector unit 124b for discharging can be connected to the discharge tube 31, for example. The discharge tube 31 can extend from the connector unit 124b to the bottom surface of the storage body 11 and can be made integral as shown in Fig. 3b. The exhaust tube 31 can be connected to the connector unit 124b by a sealing nut 311a and if necessary the sealing nut 311a has a sealing ring or the sealing nut 311a is welded to the joint plane 123 .

The surface roughness of the inside or outside of the storage body 11 can be adjusted by electro-polishing. On the other hand, before the electrolytic polishing, the interior of the storage body 11 is lined with a material having a thickness of 3.0 to 6.0 mm by a material such as Teflon, ethylene propylene diene monomer (EPDM), neoprene or ethylene tetrafluoroethylene (ETFE) can be a lining. Such a lining is intended to protect the storage body 11 from the chemical solution. The lining or coating may be applied to any material that may be in contact with the chemical solution. For example, the discharge tube 31 may be lined with a different thickness than the storage body 11.

The bottom surface of the storage body 11 may have an asymmetric structure and the curved surface may consist of a bottom portion 34 and a converging portion 33. The converging portion 33 forms at least a lower plane than the lowest position of the bottom portion 34 and the trench portion can be formed at a specific position as necessary. The trench portion refers to the portion having the lowest water level in the converging portion 33. [

One end of the discharge tube 31 may be located in the converging portion 33 and preferably be located in the trench portion. The formation of such a converging portion 33 allows all the chemical solutions in the storage body 11 to be supplied during the supply of the chemical solution. In this specification, the converging portion 33 refers to a portion which is not curved on the bottom surface or a portion which does not have a certain radius of curvature. The converging portion 33 may be at least one and may be formed in an appropriate size in consideration of the size of the entire bottom surface.

As shown in FIG. 3A, at least one discharge hole 151 may be formed in the skirt 15 and name plates 32a and 32b may be attached to the outer surface of the storage body 11. The name plates 32a, 32b can be in the form of strips and can be attached along the outer circumferential surface of the storage body 11.

As shown in FIG. 3B, the upper end of the discharge tube 31 can be coupled to the sealing nut 311a by the connecting tube 31a. The connection tube 31a is welded to the sealing nut 311a as necessary, and therefore leakage prevention can be ensured.

A discharge tube 31 having various structures can be applied to the chemical container 10 according to the present invention, and the present invention is not limited to the embodiments shown.

As described above, the chemical container 10 according to the present invention can have a ferrule unit 13 and the ferrule unit 13 can be made into a flange structure. A flange structure that can be applied to a container according to the present invention is described below.

4A, a fixing portion 431 may be formed at a central portion of the upper plane of the upper body 12, and a fixing portion 431 may have a structure which may be a flange unit 43. [ More specifically, the fixing portion 431 may be composed of a fixing neck 431a extending in a small diameter and a fixing body 431b formed in the fixing neck 431a on the upper side and having a structure capable of being engaged with the flange unit 43 And the fixing body 431b can be coupled to the flange unit 43 or made integral. The fixing neck 431a may be fixed to the upper body 12 by various means such as welding or bolting. In this specification, the flange unit 43 refers to a structure in which a bolt or a screw hole is formed along the circumferential surface and is joined to another flange by a fixing means such as a bolt or a screw. A sealing ring may be inserted between the flange and the flange as required.

On the other hand, the chemical container according to the present invention can be made in various sizes, but preferably the height H1 between the bottom surface of the skirt 15 and the upper end of the storage body 11 is 355 mm +/- 10 mm, As the inner diameter (ID) of the storage body is 229.5 mm ± 10 mm, the thickness of the storage body can be 14 mm ± 2 mm. In addition, the height H2 between the handles from the upper body 12 may be 240 mm +/- 5 mm, or the total height of the chemical container may be 670 mm +/- 10 mm. Such a standard may be set differently depending on the pressure generated in the process of supplying and discharging the contents of the chemical container and the acceptance weight of the contents of the container or the rigidity of the welded portion when made of a stainless steel material. However, the proposed standard takes into consideration the functional merit of the chemical container, for example, assuming that the specific gravity of the chemical container is 0.9 to 1.5. Therefore, if different functions are required, the proposed specifications can be set differently.

The flange unit 43 may be formed in various ways.

Figure 4b shows another embodiment of the flange unit.

Referring to FIG. 4B, the flange unit 43a may be formed integrally with the upper body 12 of the chemical container by means such as welding. Specifically, the flange unit 43a can be formed directly on the fixing means 431. [ The upper portion of the fixing means 431 may be formed in the fastening hole 433 and may have a cylindrical sealing groove 434 formed therein. The flange unit 43a can be formed in the upper body 12 in various ways, and the present invention is not limited to the embodiments shown.

On the other hand, the connector unit can be formed at any height from the joint plane 123. Specifically, as shown in FIG. 4B, an extending tube 311b may be formed above the sealing nut 311a and a joint 311c may be formed at the end of the extending tube 311b. The extension tube 311b may be coupled to a connector unit, for example, a bolt connection

A flange unit having various structures can be applied to the chemical container according to the present invention, and the present invention is not limited to the embodiments shown.

The chemical container according to the present invention has an advantage that it is easy to handle and has structural safety. In addition, the chemical container according to the present invention has an advantage that detection of the remaining amount of the chemical container can be easily detected. In addition, the chemical container according to the present invention has an advantage that the purity of the contents is maintained by the electrolytic polishing of the inside of the chemical container. Further, the chemical container according to the present invention has an advantage that it can be applied to various fields such as a medical sanitary solution, a cleaning solution of a semiconductor process or a cleaning process of a touch screen panel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Chemical vessel 11: Storage body
12: upper body 13: ferrule unit
14: Handle 15: Skirt
20: Level sensor 21: Level load
22: joint module 23a, 23b: plotter
24: fixing bracket 31: exhaust tube
33: convergent portion 34: bottom portion
43, 43a: Flange unit
123: joint plane 124: connector unit
124a: fastening part 124b: sealing ring
125: Locking means 126: Supply valve unit
131: Fixing unit 133: Sealing ring
134: polygonal nut 141: height member
211a, 211b: stopper 221: lead
431: fixing means 433: fastening hole
434: sealing groove

Claims (5)

A storage body 11 in which a liquid can be received;
An upper body 12 formed on the upper part of the storage body 11 and having a connection unit installed therein;
A fit ferrule unit 13 formed on the upper surface of the upper body 12;
At least one joint plane (123) formed on the upper surface of the upper body (12); And
And a skirt (15) coupled to a lower portion of the storage body (11)
The ferrule unit 13 is composed of a sealing ring 133 coupled to the fixed unit 131 and the fixed unit 131 and the polygonal nut 134 is coupled to the fixed unit 131 or the flange 43 ≪ / RTI > The level sensor according to claim 1, further comprising a level sensor (20) capable of detecting the level of contents through the fixed unit (131), the level sensor (20) comprising: a level rod (21); At least one floater 23a and 23b provided so as to be movable up and down along the level rod 21 and a joint module 22 which can be coupled to the port jack 25 and the fixed unit 131 Chemical containers. The chemical container according to claim 1, further comprising a converging region formed on a bottom surface of the storage body (11). The chemical container according to claim 1, further comprising at least one connector unit (124) secured to the joint plane (123), wherein a hydraulic sensor or valve unit can be coupled to the connector (124). The height of the storage body 11 from the bottom surface of the skirt 15 is 355 mm ± 10 mm or the inner diameter of the storage body is 229.5 mm ± 10 mm, 14 mm +/- 2 mm.

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