JPH03502677A - Liquid chemical handling equipment - Google Patents

Abstract

A container (10) for storage, transport and dispensing of liquid chemicals uses a collapsable thin film pouch (12) which is sealed to a fitment (14) and is positioned within a bottle (16). The cap (20) provides an inner seal (60) and an outer seal (62) is removed and the container (10) is connected to either a manual (100) or an automated (200) dispensing system which includes a valve probe (110) which breaks the inner seal (60). In the manual system (100) the bottle (16) is inverted so that flow of liquid from the pouch (12) is gravity assisted. In the automated system (200), the container (10) is placed within a pressure vessel (208 and 210) and air pressure is applied both to the outside of the bottle (16) and also to the inside of the bottle (16) to assist in collapsing the pouch (12) and forcing the liquid out of the pouch (12).

Description

[Detailed description of the invention] name of invention Containers and dispensing equipment for liquid chemicals Background of the invention 1. Field of invention The present invention includes acids, solvents, bases, photoresists, dopants, inorganic substances, organic substances, Storage, transportation and storage of liquid chemicals, including physical solutions, pharmaceuticals and radioactive chemicals. and containers for use. Specifically, the present invention provides a bottle or is a container that uses a disposable film pouch inside the overbag, and this container The present invention relates to a dispensing device for use with the present invention.

2. Description of conventional technology Currently, users of liquid chemicals are responsible for the packaging, supply and disposal of those chemicals. Choice of law is very limited. Some prior art devices use chemicals as a storage source. It is distributed and supplied to the point of use from (usually 55 gallon drums). Dora This type of dispensing equipment, including canisters, piping and automatic dispensing equipment, is very expensive. , only by a few manufacturers whose quantities are sufficient to justify the high cost. Available for use.

The second, most widely used alternative is made from glass or polyethylene. It handles liquid chemicals in small bottles. However, this alternative The formula has several drawbacks.

Specifically, glass and polyethylene meet the desired purity level of liquid chemicals. have been found to introduce both particulate contamination and metal ion extractables that greatly impair It's here. Additionally, dispensing methods used with glass and polyethylene bottles It also impairs the purity of the chemical contents. Manual decant is a chemical can expose the bottles to air pollution and compromise the safety of technicians handling the bottles.

In the case of glass bottles, there is still a risk of breakage. Slight misuse of the bottle However, if damage occurs, it can be extremely dangerous. empty bottle Disposal is also a major concern. When disposing, it is generally triple-washed, Requires labeling and crushing. This process is labor intensive and time consuming. Ru.

A third alternative is the use of blow molded fluoropolymer bottles. this generation The alternative method maintains manual bottle handling (as opposed to bulk supply). Moreover, fluoropolymer bottles are important for maintaining the chemicals being handled. Provides inertness. However, these blow molded bottles are very expensive and Therefore, the use of a take-back plan where bottles are returned to the manufacturer for processing and reuse. The cost has been justified only by its use. However, collection plans are It poses a number of logical problems for the user.

For improved containers and equipment for the storage, transportation and use of liquid chemicals. There is continued demand for this. Specifically, fluoropolymer Continued demand for containers that can provide the handling characteristics of a plastic bottle or automatic dispensing device It's useful.

Summary of the invention The present invention provides pouches made of inert, corrosion-resistant plastic film; Sealed with an opening through which the pouch can be filled and emptied The fittings provided and the external bottle or overback that surrounds the pouch and a retaining means for engaging the fitting to retain the pouch and the fitting within the bottle; A container for liquid chemicals with a

When the pouch is filled with liquid chemical, the container has a fitting for closing the opening. Can be fitted with a cap containing a break seal.

The contents of the container can be distributed in several different ways. Preferred of the present invention In one embodiment, a dispensing closure is attached to the cap of the container. contains a probe that breaks the seal provided by the cap. . The dispensing closure includes a valve, which typically means that the dispensing closure closed to prevent liquid flow until inserted into the receptacle (receptacle).

The dispensing closure and receiver open the valve when the vessel is engaged, allowing water to flow from the pouch through the valve and onward. Allows the flow of liquid chemicals through an outlet to a metered or other liquid flow control device do.

In another embodiment of the invention, automatic dispensing of the contents of the pouch includes placing a container therein. It is carried out by an apparatus containing a pressure vessel. The vent allows the inner wall of the bottle to Air is allowed to enter the space between the holes. The inside of the pressure vessel is pressurized. There is no pressure difference between the inside and outside of the bottle, but the pouch is under pressure. This pressure is transferred from the pouch through the fitting and through the valve inserted into the mouth of the fitting. Squeeze the pouch so that liquid is forced through the probe.

Brief description of the drawing FIG. 1 is a perspective view of a preferred embodiment of the container of the present invention.

FIG. 2 is a perspective view similar to FIG. 1 with the container cap removed; .

FIG. 3 is a sectional view taken along line 3--3 in FIG. 1.

Figures 4A and 4B are top views of the pouch and fittings of the containers shown in Figures 1 to 3. FIG. 3 is a diagram and a side view.

5A and 5B are perspective views of the container holding device of FIGS. 1-3; FIG.

6 is a top view of the cap of the container of FIG. 1; FIG.

FIG. 7 is a top view of another embodiment of the cap.

Figures 8A and 8B are cross-sectional views taken approximately along the line 8-8 in Figure 7. , and shows the cap during opening of the vent and removal of the peel seal. .

9 is a perspective view of a manual dispensing device for use with the container of FIG. 1; FIG.

FIG. 10 is an exploded cross-sectional view of the manual dispensing device of FIG. 9.

FIG. 11 is a cross-sectional view of the manual dispensing device of FIG. 9, showing the state in operation.

FIG. 12 is a cross-sectional view of another embodiment of a manual dispensing device with a metering pump; be.

FIG. 13 is a perspective view of an automatic dispensing device for use with the containers of the present invention.

Figures 14A and 14B show the pressure vessel and drawer of Figure 13 in two different ways. FIG.

FIG. 14C is a front view of the apparatus of FIG. 13.

Figures 15A, 15B and 15C show the container cover in three different states. FIG.

Figures 16A and 16B are top and rear views of the pressure vessel.

FIG. 17 is a sectional view taken along line 17-17 in FIG. 16A, and This figure shows the distribution valve mechanism at the location.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 1. Container (Figures 1 to 8) 1-6 illustrate a preferred embodiment of container 10. FIG.

This example has five main components: an internal pouch; 12, including fitting 14, external bottle 16, retaining device 18 and cap 20 .

Pouch 12 is best shown in FIGS. 3, 4A and 4B, but is preferred. Alternatively, a film of polytetrafluoroethylene or the like having a thickness in the range of 1 to 20 mils. Constructed from fluoropolymer film. The film sheet 21 is folded into two Opposing and equal film sheets 21A and 21B are formed. Seat 21A and heat seals 23A to 23C surrounding the outer edges of pouch 12. to be accomplished.

Depending on the liquid being packed, nylon, mylar, or other film laminates such as metal foil can be added to the layer of fluoropolymer film. For example, inside pouch 12 When the liquid chemical stored in is a photoresist or other photosensitive liquid, , a reflective metal foil can be used on the exterior surface of the pouch 12.

The shape of the heat-sealed pouch 12 as shown in FIGS. 4A and 4B are contoured to minimize stress at the joint. Pouch 12 capacity Preferably the amount is slightly larger than the bottle (or overpack) 16 .

Access to the interior of pouch 12 for filling and dispensing is provided by seat 21 via a fitting 14 that extends through a hole 25 in the top of the. Pouch 12 and fittings 14 are constructed of similar materials to form a heat seal assembly. will be accomplished. As shown in FIG. 3, the fitting 14 has a lip 24 at its upper end. an opening 22 with an intermediate neck 26, and a lower shoulder or flange 28. Be prepared. The flange 28 is secured to the upper edge of the pouch 12 surrounding the hole 25 by a seal 29. is heat sealed.

External bottles or overbags 16 for filling, transport, handling and dispensing (use) During this time, pouch 12 provides the required mechanical support and protection. Boto The container 16 is generally constructed of a plastic material such as polyethylene; In accordance with government regulatory regulations for the handling of certain liquid chemicals contained in metals. Other materials can also be used, including.

The external bottle 16 typically has a bottom 30. Side walls 32, sloped top 34, outwardly A generally cylindrical closed volume having a wide cut mouth 36 and an integral handle 38. It is a vessel. Container 10 is typically used in an inverted position in a manual or automatic dispensing device. Therefore, it is desirable that the walls of the top portion 34 be sloped. The sloped walls of the top 34 are Ensures that the fitting 14 is in the lowest position □ when the container 10 is turned upside down do.

The retaining device 18, best shown in FIGS. 5A and 5B, includes an integral hinge. A cluster including a pair of semicircular segments 40A and 40B joined by a It is a Muschel type ring. Each segment 40A, 40B is a substantially horizontal portion 44A , 44B and an upwardly projecting portion 46 having upper flanges 48A, 48B. A, 46B1 and downwardly projecting wall portions 50A and 50B. Wall portion 50A, 5 The intersection between 0B and the horizontal portions 44A and 44B is a pair of flanges 52A.

52B. There are vents 54A, 54B in the horizontal portions 44A, 44B. .

As shown in FIG. 3, the top edges of upwardly projecting portions 46A and 46B are attached The retaining device 18 is attached to the mounting part 14 such that it engages the underside of the flange 24 of the part 14. arranged around. Wall portions 50A-50B are adjacent to the inner wall of mouth 36 and such that the flange 52A-52B engages an annular shoulder 56 near the top inner surface of the port 36. , a retaining device 18 is arranged within the slot 36 of the bottle 16 .

Flanges 48A, 48B provide gripping surfaces so that pouch 12 can be emptied and This gripping surface allows the retention device 18 to be pulled out of the mouth 36 after the cup 20 is removed. It can be removed.

The opening 22 in the fitting 14 is closed by a break seal membrane 60, and the membrane 60 is fully closed. Preferably, it is an oropolymer film material. The membrane 60 (will be explained in detail later) sea urchin), knurled to facilitate breakage when used with a suitable distribution connector. The power of being noticed (desirable).

Preferably, the cap 20 is made of a plastic material such as polypropylene, It has internal threads for engaging the external threads of the mouth 36 of the bottle 16. cap 2 0 is a liquid-tight opening between the fitting 14 and the membrane 60 and between the cap 20 and the bottle 16. screwed onto the bottle 16 to a predetermined torque to ensure an air-tight seal. It is designed to.

The cap 20 also includes a peel-off outer seal, which is shown in FIGS. 1 and 3. In the embodiment shown in FIG. 6 and FIG. This is the attached film 62. The film 62 has a gas vent opening 68 as well as a cap 2. 0 main central opening 66. The film 62 remains in place and does not leak inside the container 10. Back-up seal for container 10 until the content is to be dispensed (used) I will provide a. At that time, the film 62 can be pulled up by grasping the pull tab 64. It is torn off by As a result, the main opening 66 and the gas vent opening 68 are exposed. however, the membrane 60 is still in place and a suitable dispensing device is provides a seal until it is attached to the cap 20.

The vent opening 68 and the vents 54A and 54B are located between the pouch 12 and the bottle 16. provides a passageway for air to enter the interior of the container 10 between the walls of the container 10; this child means that air pressure helps deflate the pouch 12 when liquid is dispensed. enable.

In a preferred embodiment of the invention, cap 20 is designed to protect the specific Flange 7 includes a coded key or slot 70 that uniquely indicates the liquid chemical. Prepare within 1.

These slots 70 ensure that only the correct containers are connected to the dispensing device. For purposes of verification, a specific dispensing device is engaged.

Figures 7, 8A and 8B illustrate caps for use with containers of the present invention. Another example will be shown. Caps shown in Figures 7, 8A and 8B 80 is a molded plastic cap, preferably of polypropylene, integral The configuration has a peel portion 82 and a peel tab 84. drop-off part (notch) 86 is located substantially below the tab 84 and covers the gas vent opening 88. .

The cap 80 has four alignment pins 90 that protrude upward, and the pins 90 are attached to the cap. Used for proper alignment of the dispensing mechanism above the bottle 16 and and provides protection against accidental opening if the cap 80 is dropped. Sara In addition, the flange 93 is provided with a key code slot 92. The coded slot 92 identifies the particular liquid chemical contained within the container and This serves to prevent the container from being connected to the wrong dispensing device. shallower A slot 93 is formed along the periphery of the flange 93 for gripping, allowing the dispensing device to When placed on the cap 80, it allows air to pass through.

When opening the gas vent opening 88, the tab 84 is pushed down, so the lamp 9 5 engages the overhang 86 and the connection between the overhang 86 and the remainder of the cap 80 is broken at one end to open the gas vent opening 88. Next, pull up tab 84 This removes the main path and reduces the contact between portion 82 and the remainder of cap 80. The continuation is broken.

The container 10 of the present invention has significant advantages over prior art containers for liquid chemicals. do. First, the portion of the container 10 that contacts the liquid chemical (i.e., the pouch 12 and fittings 14) are made of materials such as fluoropolymers, and these materials are compared to traditional glass or polyethylene in terms of eliminating shedding and metal ion leaching. Better than a container.

Second, the external bottle 16, preferably made of plastic or metal, is Provides a sturdier construct than a glass container.

Third, all parts that actually come into contact with liquid chemicals (pouch 12, fittings 14 By using a fluoropolymer for the membrane 60), the container 10 is made of polyethylene. less permeable than other containers.

Fourth, pouch 12 and fitting 14 are made from fluoropolymer, but not polyethylene. A glass or metal external bottle 16 provides mechanical strength and protection. Therefore, the overall cost of container 10 is less than that of a blow-molded container made entirely of fluoropolymer. while still providing the benefits of fluoropolymer materials.

Fifth, the flat fluoropolymer film 21 forming the pouch 12 is unrolled. Pre-cleaning of the wet surfaces of the pouch 12 is facilitated prior to heat sealing. It will be done.

Sixth, the pouch 12 is preferably evacuated prior to filling so that the pouch 12 is evacuated during filling. connection is now possible. This eliminates the need to vent the exhausted air. , helps maintain the chemical purity of the liquid chemicals introduced into the pouch and filled. or Alternatively, the pouch 12 can be filled with nitrogen and leak tested immediately after manufacture. The nitrogen can be maintained until filling with liquid chemicals.

Seventh, it is not necessary to destroy the entire container when disposing of it after use. Instead, a retaining device Grasp the flanges 48A and 48B of 18 and insert the attachment part through the mouth 36 of the bottle 16. 14 and pouch 12 can be simply pulled out. Next, 12 deflated pouches and the fitting 14 are simply discarded. The holding device 18 and the bottle 16 are liquid Because it did not come into contact with chemicals, it can be reused without elaborate cleaning procedures or Can be discarded.

Eighth, when the container 10 with the cap 20 is suitably used with a dispensing valve, Two seals are provided, including a break seal or membrane 60 that is only penetrated. , Additionally, cap 20 also seals bottle 16. This means that transportation and During storage, protect the contents from atmospheric pollution.

Ninth, liquid chemicals are actually "double-packed." i.e. pouch 12 and bottle 16, which makes handling and transportation difficult. Increase safety in

With the container 10 of the present invention, dispensing can be accomplished using several different techniques. can. Easily open the container by removing the cap 20 (or 80) You can then pour it by hand by turning it upside down. Or cap 20 ( or 80), insert the tube into the pouch 12 through the fitting 14, and pump The contents can be pumped out using a pump.

Yet another method for dispensing the contents of container 10 is to using a manual dispensing valve assembly. As shown in Figures 9 to 12 This manual system consists of a valve assembly connected to the vessel, and a gravity A platform is provided to support the container in an inverted position for dispensing.

Container 10 is also suitable for use in automated equipment such as that shown in FIGS. 13-17. can be used. Container 10 is placed in a pressure vessel and pressurized gas is supplied to pouch 12. The contents are squeezed out of the pouch 12 via a mating connection and distribution tube. Served.

The following portion of the specification describes manual and automatic devices for use with container 10. This will be explained in more detail below. In all of these devices, the cap 2 of the container 10 o or 8o stays in place so the user can access the contents of the pouch 12 directly. There is no risk of close contact. In addition, the fluoropolymer portion Contamination during dispensing is minimized because only the liquid comes into contact with the liquid chemical.

2. Manual dispensing device (Figures 9 to 12) Figures 9 to 11 show the male type Manual dispensing device including a dispensing closure 102, a female mold receiver 104 and a base 106 100 preferred embodiments are shown. The male dispensing closure 102 first closes the container 10. is fitted to the cap 20 while in the upright position, and then the container 10 and dispensing clog are The assembly of jars 102 is inverted (as shown in FIG. 9) and the female mold receiver is 04 (as shown in FIG. 11).

As best shown in FIG. 10, dispensing closure 102 includes probe 110, Check valve body 112, check valve housing 113, lock ring 114, key code door cover 116, locking tab 118, key tab 120, bolt 122, non-return check valve plunger 124, spring 126, and O-rings 128, 130 and and 132.

A key tab 120 carried on the outer end of the key code cover 116 is attached to the cover 20. engages the key code slot 70 to enable the dispensing device 100 to be used with the container 10; ensure that the equipment is suitable for Once the external flange 71 of the cover 20 is After passing through the tab 120, there are four locking tabs spaced apart on the periphery. 118 and is seated on the key code cover 116. lock ring 11 4 is rotatable to move the locking tab 118, and the flange 71 is Once the locking tab 118 is passed, it cannot be removed.

As dispensing closure 102 is inserted into cap 20, probe 110 Point 134 ruptures membrane 60. When probe 110 moves into fitting 14, The O-ring 128 connects the inner wall of the neck 26 of the fitting 14 and the outer wall of the probe 110. Bring the seal between.

Probe 110 is connected at one end to inlet passageway 138 and at the opposite end to a check valve body. 112 has a central hole 136 connected to the interior of the tube. Probe 110 is installation part 1 4, from the interior of pouch 12 through passageway 138 and central hole 136. A liquid passageway leading to the inside of the check valve 112 is thus established. However, check valve 12 4 is normally seated on the check valve body, and the O ring 132 is placed on the exit of the check valve body 112. seals the mouth, even if the dispensing closure 102 is fitted into the cap 20. , even when the container 10 is inverted, no liquid is dispensed.

The female mold receiver 104 is attached to the top plate 140 of the base 106 by screws 142. It will be done. The base 106 also includes an outlet tube 146 and fittings. A spacer 144 is provided to provide a gap for 148 on the underside of the plate 140. .

A manifold 150 is attached within the female mold receiver 104. manifold Door 150 includes a cavity 152 for receiving check valve body 112. cavity 152 There is an outlet passageway 154 and a protrusion 156 at the bottom. Container 10 and distribution clover When the jar 102 is lowered over the base 106, the check valve body 112 becomes hollow. 152 , while the check valve housing 113 is inserted into the female receiver 104 . be tolerated. The O-ring 130 provides a seal between the check valve body 112 and the manifold 150. while the protrusion 156 pushes the check valve plunger 124 upwardly to form a plug. Remove the plunger 124 from the pouch 12 to the outlet passageway 154 and then to the fitting 148. allows liquid to flow through to the outlet tube 146.

A spring loaded plunger assembly 158 is mounted on the side wall of the vessel 104. ing. The tip of the plunger 160 fits into the annular groove 162 of the check valve housing 113. Fit and engage. The container 10 and dispensing closure 102 are inserted into the female mold receiver 104. When removing the plunger 160, first push the plunger 160 against the biasing force of the spring 164. I have to pull it back.

A spring-loaded bin 166 is mounted vertically on the bottom of the vessel 104 and Press the bottom of the stop valve housing 113 upward. Biasing spring 168 applies a force that biases the pin 166 upwardly. Plunger 160 is pulled back to dispense When the closure 102 is released from the receiver 104, the spring 168 and the bit are released. 166 vertically positions dispensing closure 102 to facilitate manual removal. Gives automatic force to move.

This upward force also causes check valve plunger 124 to disengage from protrusion 156. Therefore, the plunger 124 and O-ring 132 are seated in contact with the check valve body 112. The container 10 and closure 102 are manually removed from the container 104. You can prepare for removal. Spring loaded plunger 158 is removed once. and container 10 and dispensing closure 102 can be removed with both hands without leaking residual liquid. Can be removed. The empty container 10 is then placed upright and the dispensing closure 1 02 is removed to be connected to the next full container.

FIG. 12 shows a manual dispensing device substantially similar to the embodiment shown in FIGS. 9-11. Another example is shown below. FIG. 12 shows the structure of the embodiment shown in FIGS. 9 to 11. Elements that are similar to those described above are designated by similar reference numerals.

The main difference between the embodiment of FIG. 12 and the embodiments of FIGS. 9-11 is that FIG. An embodiment of this includes a metering pump 190. The metering pump 190 has a base 10 6 and is connected to an outlet 146. Metering pump 190 is preferably uses only fluoropolymer materials in its parts that come into contact with liquid chemicals. and the female cylinder 192, plunger 194, outlet 196 and discharge pipe 198. include.

When plunger 194 is pulled upwardly, liquid from container 10 flows into output tube 146. and further into the interior of the cylinder 192 via an inlet check valve (not shown). be included. In the preferred embodiment, cylinder 192 is graduated so that The user selects the distance (stroke) that the plunger 194 is pulled up, and allows the amount of liquid to be dispensed to be selected. Next, plunger 194 When the is moved downward, the inlet check valve closes and the liquid passes through the outlet check valve (not shown). , through outlet 196 and discharge pipe 198.

Providing the dispensing device of the present invention with a metering pump 190 allows for metered liquid chemical cap from the container while providing a convenient, safe and accurate way to dispense Eliminates the need to remove expensive pumps (which generate particles that can contaminate the fluid) ) or extend into the interior of an open container and become dirty or contaminated due to mishandling. Eliminates the need for dip tubes, which can increase staining.

3. Automatic dispensing device (Figs. 13 to 17) Fig. 13 shows the container 10° of the present invention. 2 is a perspective view of an automatic dispensing device 200 for use with FIG. The container 10゛ is so far It is substantially similar to the container 10 shown in FIG. 80 (shown in FIGS. 7, 8A and 8B). .

The automatic dispensing device 200 includes a main housing 202 with a drawer 204 with rollers. The main housing 202 is shown in FIG. 13 in an open condition. Howe Since both the drawer 202 and the drawer 204 are supported by wheels 206, , the dispensing device 200 can be moved from one location to another as needed. Ru.

The container 10′ is inside a pressure container constituted by a pressure mill 208 and a cover 210. placed in The pressure mill 208 is rotatably supported by a pair of brackets 212. , the brackets 212 are placed on both sides of the pressure mill 20g and attached to the drawer 204. I'm here. A shaft 214 extends outwardly from both sides of the pressure mill 208 and is inserted into the bracket 212. and extends through the upper end of the bracket 212 .

Formed by track arm 216, cam follower 218, and slide 220 A linked linkage is connected to shaft 214 and is shown in FIGS. 13 and 14A. From a nearly upright position (when drawer 204 is opened), FIGS. 14B and 1 Pressure mill 208 in the inverted position (when drawer 204 is closed) shown in Figure 4C. Swirl.

The cover 210 covering the pressure mill 208 is opened and closed using a cover locking air cylinder 22. 2A to 222. D, cover lift cylinders 224.226A and 226B; and cover tilt cylinders 228A and 228B. hippopotamus - 210 is in place and sealed over pressure volume 208, the flexible Flow between the (flexible) conduit 230 and a volume of 1 o' in a sealed pressure vessel. A passageway is established through cover 210.

When loading a new container 10' into the dispensing fixture 200, the roller drawer 204 is brought out. Next, the changeover switch 232 on the operation panel 234 is rotated. Adjusted to "open" position. At this time, the air cylinders 222A to 222D Actuated to release the locking mechanism of the cover 210 and lock the cylinder 224.22. 6A and 226B as best shown in FIGS. 15A and 15B. , lift the cover 210. Next, as shown in FIG. 15C, 278A and 228B tilt cover 210 rearward and into the interior of pressure volume 208. Make it accessible.

the peel tab 84 of the cap 80 on the new chemical container is removed; As a result, the break seal membrane is exposed and the gas vent opening 88 of the cover 80 is opened. It will be done. Container 10° is then manually lifted and placed within pressure volume 208.

The operator then turns the selector switch 232 to the [Load, J position]. Cylinder 228A and 228B tilt the cover 210 directly behind the pressure amount 208 . The operator then inserts the key code cone 286 (shown in FIG. 17) into the cap 8. A key-encoded knob 236 located on the pressure volume cover 210 until it contacts 0 Press down with your hand.

Cone 286 then mates and engages the key-encoded slot in cap 80. Knob 236 is rotated until . Due to the special design of the key code engagement mechanism (later (described in more detail in connection with FIG. 17), rotation of knob 236 is controlled by probe 238. and not communicated to conduit 230.

The transfer switch 232 is then turned to the "closed" position and the air cylinders 224, 22 6A and 226B lower cover 210 into position. At the same time, cover 21 The cylinders 222A to 222D on 0 actuate and the final pressure on the pressure quantity 208 Open the clamp for positioning. When cover 210 is lowered onto pressure volume 208 , the probe 238 (FIG. 17) penetrates the break seal membrane 60 at 10° of the container and removes it. Seal the inner neck 26 of the fitting 14. Once the cover 210 is completely lowered, When pressed, pressure is automatically removed from the clamp actuation cylinder 222A-222D. These cylinders can secure the cover 210 in place. Ru.

The operator then closes drawer 204. This means that the torsions on either side of the pressure quantity 208 It is composed of a rack arm 216, a cam follower 218, and a slide 220. The pressure amount 208 is rotated into an inverted state through a linkage (linkage mechanism). do. The pressure saw can 208 is shown in FIGS. 14A and 14B as shown in FIG. ” and two different states corresponding to the “drawer closed” state.

Once drawer 204 is fully closed, transfer switch 232 is in the "pressure" position. It is rotated by This means that compressed air enters pressure volume 208 through air pipe 249. , and allows entry into the space between the inner wall of the bottle 16 and the pouch 12.

In this way, air pressure is applied to both sides of the walls of the bottle 16 so that the bottle 16 is not subjected to a pressure gradient.

A pressure gauge 250 and regulator 252 on the operation panel 234 are added to the pouch 12. Allows the operator to adjust the air pressure applied. Into compressed air pressure amount 208 is introduced when the dispensing button 254 on the operation panel 234 is pressed or when the This is only done if a partial electrical signal is supplied to the distribution device 200. Normal non-distribution model In this mode, the air pressure is not maintained within the pressure volume 208.

In a preferred embodiment of the invention, an airflow switch (not shown) controls the pressure during dispensing. The flow of compressed air into force 208 is detected. When compressed air enters the pressure amount 208 , the liquid within the pouch 12 is squeezed out of the container 10. When pouch 12 is empty, it is empty. Air flow ceases due to the total displacement of liquid by the air in pressure volume 208. Airflow swivel The switch detects this cessation of flow and sends an electrical signal to the alarm device, which alerts the operator. Warn you to replace the bottle.

In the event of a pneumatic or electrical fault, drawer 204 is closed and pressure volume 208 is reversed. The chemical contents of the container 10° leak out from the pressure volume 208 even when it is It never happens.

The cover 210 remains firmly fixed by the clamping mechanism, and the cover 210 To release from the pressure amount 208, the pressure on the cylinders 222A to 222D is increased. Air is required.

Another safety feature of dispensing device 200 is that in the unlikely event that an operator If you try to pull out 04, the pressure will be released automatically. Similarly, If outlet 204 is not fully closed, air pressure may be introduced into pressure volume 208. I can't. In a preferred embodiment of the invention, air pressure within pressure volume 208 is completely vented. 13 and 14A, and the pressure quantity 208 must be in the upright position shown in FIGS. 13 and 14A. If the cover 210 is removed from the pressure volume 208, the interlock circuit will also be activated. prevent.

FIG. 17 shows a portion of the cover 210 and pressure volume 208 along with a portion of the vessel 10°. FIG. As shown in FIG. 17, the cover 210 is a main cover plate. 270 , the main cover plate 270 includes an inner wall of the cover plate 270 and the pressure volume 208 . includes an O-ring 272 for sealing. The clamping mechanism of the cover 210 or The locking mechanism is clamp 274. Crumb ring 2751 matching bin 276, support The holding blocks 278222A to 222D are connected to the cover plate 270 and the connecting ring 280. It is installed between the

When air cylinders 222A-222D are actuated, their pistons move upward. direction and lift the connecting ring 280. This allows the movement of the support block 27 8 and the dowel pin 276, and the outward movement of the clamp 274 cause movement. When there is no air pressure applied to cylinders 222A to 222D If the biasing springs in cylinders 222A-222D are 0 back to the position shown in FIG. clamp 274 radially inwardly to the position shown in FIG. Stretch.

A dome 282 is fixedly attached to the center of the cover plate 270. 82 supports sleeve 284 and key code cone 286. 0 ring 28 8 seals between the cone 286 and the inner wall of the dome 282. shoulder ball 290 connects sleeve 284 and cone 286 to each other. The knob 236 is Bolts 292 attach to the upper end of sleeve 284.

Relative of sleeve 284 and cone 286 to dome 282 in the axial direction The position is determined by the position of adjustable stop piece 294. rock nut 2 96 holds adjustable stop piece 294 in place. adjustable stop piece The purpose of 294 is to allow the device 200 to accommodate all component manufacturing tolerances. It is to do so.

Sleeves 284 and 286 are allowed to rotate relative to dome 282 . Rotational force is applied to sleeve 284 and cone 286 by knob 236. Ru. This causes the cone 286 to rotate so that the key tab 298 is capped. 80 respective key slots. Shown in Figure 17 The mating pin 300 holds the key tab 298 on the inner surface of the cone 286 so that do.

The alignment of the recess 302 on the inner surface of the cone 286 with the vial 90 of the cap 80 is Assists in correct alignment of cone 286 relative to cap 80.

Coupling 304 is coaxially mounted within sleeve 284 . Cuplin The upper end of the pipe 304 is connected to the conduit 230. At the lower end of the coupling 304 , probe 238 are connected. The O-ring 306 connects the probe 238's flap. A seal is formed between the hinge 308 and the cone 286. Tip 3 of probe 238 10 is a pointed O-ring forming a seal with the neck area of the fitting 14; 312.

Probe 238 has a T-shaped passageway 314 that is open at distal end 310. , and connected to the valve chamber 316.

A spring 318, a disk 320, and a poppet 322 provide air inside the valve chamber 316. A check valve consisting of

A passageway 324 in coupling 304 connects the interior of valve chamber 316 with conduit 230 .

Spring 318 forces poppet 322 into the normally closed position, as shown in FIG. bias. Because of the air pressure applied to the pouch 12, there is fluid pressure within the container 10. When the valve is opened, hydraulic pressure disengages the poppet 322 and opens the passageway 314 from the pouch 12 to the valve chamber. 316 and flow path 324 to conduit 230 .

In the embodiment shown in FIG. 17, coupling 304 and probe 238 are Bu234. It does not rotate with sleeve 284 and cone 286. This thing is , the key tab 298 is capped without causing any rotation of the probe 238. A rotation is applied to the knob 236 to align it with each of the 80 corresponding key slots. and make it possible.

During dispensing, air pressure is applied inside the pressure volume 208 and into the interior of the bottle 16. is allowed. Passages for airflow are provided in notches or grooves on the periphery of the cap 80. through the space between cap 80 and cone 286, which is partially provided by .

Air flows through the recess 302 in the cone 286 and the vent 88 (No. 8 A) in the cap 80. and FIG. 8B). Air is once kept inside the cap 80. through slots 54A and 54B (see FIGS. 5A and 5B) of holding device 18. and flows into the inside of the bottle 16. Air pressure tends to deflate pouch 12 , which forces fluid through probe 238 and coupling 304. . Since the same air pressure is applied to both the outer and inner walls of bottle 16, bottle 1 The wall strength of 6 is not a factor in its ability to distribute fluid under pressure.

4. Conclusion The present invention provides an important alternative to prior art equipment for handling and transporting liquid chemicals. The purpose is to provide a device that provides The invention simplifies the disposal of parts that come into contact with chemicals. We provide sturdy containers at low prices. Furthermore, the present invention provides that the contents of the container manual and automatic, in a safe manner that completely avoids contact with personnel and the atmosphere. Suitable for distribution.

Although the invention has been described in connection with preferred embodiments, the spirit and scope of the invention have been described. Those skilled in the art will appreciate that changes may be made in form and detail without departing from the people will understand.

[Deafness, loss of hearing

Claims (11)

[Claims] 1. A sealed flexible film pouch with an interior to hold liquid and, a fitting sealed to the pouch and defining an opening in communication with the interior of the pouch; for sealing said opening after the pouch is filled with liquid through said opening; sealing means; a bottle having an opening communicating with the interior thereof, a fitting part, and the fitting part connected thereto; for positioning the mouth of the bottle within the bottle and for engaging the pouch inside the bottle. 1. A liquid chemical handling device comprising a container, comprising a retaining means. 2. A retaining device connects the first and second retaining device segments. 2. A liquid chemical handling apparatus according to claim 1, further comprising hinge means for connecting the liquid chemical handling apparatus. 3. The mounting parts are The opening part and a flange adjacent to the opening; A neck part connected to the opening part, a roughly conical shoulder flange connected to the neck and sealed to the pouch; A liquid chemical handling device according to claim 1 or 2 consisting of: 4. The liquid chemistry of claim 3, wherein the sealing means comprises a membrane covering the opening of the fitting. Chemical handling equipment. 5. The retention means and cap are designed to prevent air from passing through when liquid is dispensed from the pouch. Claim 3 having an air passage that allows entry into the bottle surrounding the house. Liquid chemical handling equipment. 6. The container further engages the mouth of the bottle and is above the mouth of the bottle and the fitting. a cap disposed in the fitting, the cap being substantially aligned with the opening in the fitting; Claims having a main central opening and a removable seal covering the main central opening. Liquid chemical handling equipment of paragraph 1. 7. A device that is insertable into the aperture through a sealing means and that includes a flow path therein. a probe and a liquid chemical connected to the probe and dispensed from the pouch via a flow path. liquefaction according to claim 1, further comprising a dispensing device comprising means for receiving the product. Chemical handling equipment. 8. Inside the bottle, push the liquid out of the pouch through the channels in the probe. means for supplying pressurized fluid between the wall and the pouch; further comprising a pressure vessel having an inner chamber for holding the vessel; Claims wherein the means for supplying liquid supplies pressurized fluid to the interior chamber of the pressure vessel. Liquid chemical handling equipment of Section 7. 9. The pressure vessel further includes a pressure can and a cover supporting a probe, and a dispensing device. In addition, means for inverting the pressure vessel; Means for securing the cover on the pressure canner in the closed position and for fixing the cover in the open position and the closed position. means for moving the cover to and from the position, and further means for lifting the cover. , and means for tilting the cover; and for securing the cover. Claims further comprising means and means for controlling the means for moving. Liquid chemical handling equipment of Section 7. 10. The dispensing device further includes a system for providing a seal between the probe and the aperture. means and a normally closed valve means for controlling flow through the flow path; and means for opening the valve means when the probe is inserted into the pouch. A liquid chemical handling device according to claim 8. 11. associated with the probe and the probe has a cap and sealing means. a cap-engaging hand for engaging the cap while being inserted into the opening through the cap-engaging hand; 8. The liquid chemical handling apparatus of claim 7 further comprising a stage.