JP4657672B2 - 3-way diaphragm valve - Google Patents

Description

  The present invention relates to a three-way diaphragm valve. More specifically, it is possible to distribute one fluid into two, select one of the two fluids, or mix two fluids into one, which is simple in structure and piping system Design, disassembly and assembly are easy, especially when it is incorporated into a device that distributes and mixes chemicals, and it is possible to effectively prevent the accumulation of liquid, and a simple and reliable sterilization process is possible. The present invention relates to a three-way diaphragm valve that can be easily provided with a separate pipe.

  The three-way diaphragm valve is used, for example, by being incorporated in a piping system of a device (liquid control device) that distributes and mixes chemical solutions. For example, as shown in FIG. 7 as a liquid adjustment device 900, such a liquid adjustment device is charged with a predetermined amount of drug substance and distilled water into a mixing tank 901, mixed, and then mixed with nitrogen gas or the like. After the liquid is pumped to the sterilization filter 903 and the temperature is adjusted by the heat exchanger 904, the liquid is temporarily stored in the storage tank 902, and the preparation liquid can be transferred to a filling machine or the like with nitrogen gas or the like. In this case, when the drug substance to be mixed is changed (refilling), the system is washed, and for example, an operation of sterilizing with steam at 121 ° C. (CSIP: Cleaning and Sterilization in place) is essential. A pipe (indicated by a broken line in the figure) necessary for enabling CSIP is connected to the pipe that sends These valves open and close a plurality of valves as needed, perform predetermined operations, and connect a diaphragm valve 801 having one port to an elbow pipe 803 and a T-shaped pipe 802 as shown in FIGS. It is installed in the vertical direction in the liquid conditioner so that the liquid inside the system flows downward due to gravity and the liquid pool in the system is minimized. However, if the valve on the left side of the system shown in FIG. 10 is taken as an example, liquid accumulation occurs in the hatched portion when the valve is closed. In the case of recharging, the system is cleaned by CSIP. When the diaphragm valve 801 is closed for operation, there is a problem that the cleaning liquid adhering to the wall in the system stays near the port 807 of the diaphragm valve 801 and contaminates the refilling liquid. 9 and 10, reference numeral 808 indicates a diaphragm, reference numeral 809 indicates an air actuator, and reference numeral 810 indicates a liquid reservoir.

  For this reason, as shown in the valve on the right side of FIG. 10, in addition to the conventional CSIP nozzle 805, a CSIP nozzle 806 is directly attached to the flow path of the diaphragm valve 801 to reduce the liquid pool 810 of the diaphragm valve 801. However, it has been difficult to completely eliminate the generation of the liquid pool 810. Further, since the elbow pipe 803 and the T-shaped pipe 802 are combined and the diaphragm valve and the above-described pipe are connected using the ferrule flange 804, there is a problem that a space is wasted as a switching valve. Furthermore, it takes a lot of time to install another pipe for CSIPing the inside of the pipe. Especially, when the direction of the CSIP pipe is not one direction, the piping system is complicated, and the entire apparatus is periodically disassembled and cleaned. There was a problem that the labor of disassembling and reassembling the piping was great.

In order to cope with such a problem, the first diaphragm that cooperates with the first valve seat and the second diaphragm that cooperates with the second valve seat are provided, and the lowest surface on the first passage side of the first partition wall is provided. A three-way diaphragm valve is disclosed which is formed horizontally from the first valve seat to the second valve seat, and the lowest surface of the third passage is provided at the same horizontal level as or below the lowest surface (Patent Document). 1).
JP 2003-329154 A

  However, although the three-way diaphragm valve disclosed in Patent Document 1 can appropriately prevent the occurrence of liquid pool, the structure is complicated, such as the use of two diaphragm valves. Depending on the orientation of the port, it is difficult to completely prevent the accumulation of liquid, and it is not easy to design, disassemble and assemble the piping system, ensure sterilization, and arrange another piping for it. It was not always satisfactory.

  The present invention has been made to solve the above problems, and has a simple structure and is easy to design, disassemble and assemble a piping system, and is particularly used by being incorporated in an apparatus for distributing and mixing chemicals. In this case, it is an object to provide a three-way diaphragm valve that can effectively prevent the occurrence of a liquid pool and that can be easily and reliably sterilized and can be easily provided with another pipe. .

  In order to achieve the above object, according to the present invention, the following three-way diaphragm valve is provided.

[1] First to third main nozzles serving as fluid inlets and outlets, first to third flow passage chambers communicating with the first to third main nozzles and opened upward, respectively, the first to third main nozzles. Three flow channel chambers, the first to third sub-nozzles communicating with the outside, the first partition wall having a predetermined height separating the first flow channel chamber and the second flow channel chamber, and the first A valve main body having a second partition wall having a predetermined height for partitioning the first flow path chamber and the third flow path chamber, and the first to third peripheral edge upper end surfaces of the first to third flow path chambers. A diaphragm erected and fixed so as to hermetically seal the three flow path chambers, and vertically moving so as to be locked or unlocked independently of the upper end surfaces of the first and second partition walls, and the diaphragm Each of the first and second partition walls is pressed or pressed independently of the locking points corresponding to the locking or unlocking with the upper end surface. And the locking portion is locked or unlocked independently from the upper end surfaces of the first to second partition walls, and between the first and second flow path chambers and the first to first. And first to second operating means that operate to independently block (close) or release (block) the communication between the third flow path chambers, and communicate with the first flow path chamber. A first main nozzle and a first sub nozzle, a second main nozzle and a second sub nozzle communicating with the second flow path chamber, a third main nozzle communicating with the third flow path chamber, and a second main nozzle. three-way diaphragm valve which respective axes of the three sub-nozzle is characterized in that arranged therein in the same direction.

[ 2 ] A first main nozzle and a first sub nozzle communicating with the first flow path chamber, a second main nozzle and a second sub nozzle communicating with the second flow path chamber, and the third flow The three-way diaphragm valve according to [1], wherein the axes of the third main nozzle and the third sub-nozzle communicating with the passage are arranged in the vertical direction .

[ 3 ] 3 according to [1] or [2], wherein the flanges for connecting to the external piping of the first to third main nozzles and the first to third sub nozzles are ferrule types, respectively. Directional diaphragm valve.

[4] the first to second actuating means, three-way diaphragm valve according to any one of the an air cylinder, respectively [1] to [3].

[ 5 ] The three-way diaphragm valve according to any one of [1] to [ 4 ], which is used by being incorporated in an apparatus for distributing and mixing a chemical solution.

  According to the present invention, the structure is simple and the piping system can be easily designed, disassembled and assembled. In particular, when it is used by being incorporated in an apparatus for distributing and mixing chemicals, it is possible to effectively prevent the generation of liquid pools. There is provided a three-way diaphragm valve that can be easily and surely sterilized and can be easily provided with another pipe.

  Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings. FIG. 1 is a sectional view schematically showing one embodiment of a three-way diaphragm valve of the present invention, and FIG. 2 is a perspective view schematically showing a valve main body portion in the embodiment shown in FIG. FIG. 3 is a perspective view schematically showing the overall appearance of the embodiment shown in FIG. 1, and FIG. 4 schematically shows a diaphragm used in the embodiment shown in FIG. (A) is a top view, FIG.4 (b) is the sectional view on the AA line, FIG.5 is typically an example at the time of using the embodiment shown in FIG. FIG. 6 is an explanatory view schematically showing another example of the case where the embodiment shown in FIG. 1 is incorporated in a liquid adjustment device.

  As shown in FIGS. 1 and 2, the three-way diaphragm valve 10 according to the present embodiment includes first to third main nozzles 101, 102, 103, first to third main nozzles 101, which serve as fluid inlets and outlets. 102 and 103, respectively, and the first to third channel chambers 111, 112, and 113 opened upward, and the first channel chamber 111 having a predetermined height that partitions the first channel chamber 111 and the second channel chamber 112. A first partition wall 121, a valve body 100 having a second partition wall 122 having a predetermined height for partitioning the first channel chamber 111 and the third channel chamber 113, and first to third channels. The first to second partition walls 121 are constructed and fixed so as to hermetically seal the first to third flow path chambers 111, 112, 113 on the peripheral upper end surfaces of the chambers 111, 112, 113 (fixed portion 205). , 122 will be locked or unlocked independently from the upper end surface of 122 The diaphragm 200 that moves up and down, and a locking point (touch line) 204 corresponding to the locking or unlocking of the diaphragm 200 with the upper end surfaces of the first and second partition walls 121 and 122 (first engagement) The stop portions 204a and the second locking portions 204b) are independently pressed or released, and the locking portions (touch lines) 204 (204a and 204b) are connected to the first and second partition walls 121 and 122, respectively. The upper end surface is locked or unlocked independently, and the communication between the first to second flow path chambers 111 and 112 and the communication between the first to third flow path chambers 111 and 113 are independently blocked. It is characterized by comprising first and second actuating means (air cylinders) 300 and 350 that act to release (close) or shut off (close). In addition, between the latching location 204 (204a, 204b) of the diaphragm 200 and the upper end surface of the 1st-2nd partition walls 121,122, between the 1st-2nd flow path chambers 111,112 and the 1st. A portion where communication between the first to third flow channel chambers 111 and 113 is blocked (closed) or released from the blockage (closed) is referred to as a “port”, and between the first to second flow channel chambers 111 and 112 and The communication between the first to third flow path chambers 111 and 113 may be described as “the port is opened / closed” when the communication is blocked (closed) or released (blocked).

  The three-way diaphragm valve 10 according to the present embodiment configured as described above operates the first to second operating means (air cylinders) 300 and 350, whereby the locking portion 204 (204a, 204b) is locked or unlocked independently from the upper end surfaces of the first to second partition walls 121 and 122, respectively, and between the first and second flow path chambers 111 and 112 and the first to third channels. Of the first to third main nozzles 101, 102, 103, the communication between the flow path chambers 111, 113 is independently blocked (closed) or blocked (closed) and released (the port is opened / closed). The fluid flowing in from any one of the two main nozzles can flow out from at least one of the remaining two main nozzles, and any one of the first to third main nozzles 101, 102, 103 One at least one of the fluid flowed from, it is possible to flow out from the remaining one of the main nozzles.

  In FIG. 1, the first actuating means (air cylinder) 300 on the left side of the drawing is lowered to press the first locking portion (touch line) 204a of the diaphragm 200, and the first to second flow path chambers. When the communication between 111 and 112 is blocked (closed) (the port is closed), and independently of this, the second operating means (air cylinder) 350 on the right side is raised, and the diaphragm The pressing of the second locking portion (touch line) 204b of 200 is released, and the disconnection (closing) of communication between the first to third flow path chambers 111 and 113 is released (the port is opened). Show the case.

  The material of the valve body 100 used in the present embodiment is not particularly limited as long as it has durability, but when used in the above-described liquid preparation device, it is made of stainless steel such as SUS316. Is preferred. In particular, when it is necessary to ensure the prevention of adhesion of foreign substances and cleanability, the surface in contact with the liquid is more preferably subjected to electrolytic polishing to a mirror finish with a surface roughness of 1 to 2 μm. When corrosion resistance is required, it is preferable to perform lining molding with a fluorine-based resin such as perfluoroalkoxy resin (PFA), ethylene tetrafluoroethylene copolymer (ETFE) or the like. Furthermore, when wear resistance is required, it is preferable to use ceramics such as alumina and partially stabilized zirconia. The valve body 100 can be manufactured by machining a precision cast material.

  As shown in FIGS. 4 (a) and 4 (b), the diaphragm 200 used in the present embodiment includes a locking point (touch line) 204 (first locking point 204a and second locking point 204b). A diaphragm main body 201 having a fixed portion 205 is engaged with center screws 202 (screw portions 202a, enlarged diameter portions 202b) and 203 (screw portions 203a, enlarged diameter portions 203b). The enlarged diameter portions 202b and 203b of the center screws 202 and 203 are preferably embedded when the diaphragm main body 201 is formed, in order to prevent the rotation of the diaphragm main body 201 and have an outer shape of a square or a star shape. The material of the diaphragm body 201 is not particularly limited as long as it has flexibility, toughness, durability against repeated deformation, and the like. For example, polytetrafluoroethylene (PTFE), perfluoroalkoxy resin (PFA) Silicone rubber etc. can be mentioned as a suitable example. When PTFE is used as the diaphragm main body 201, it is preferable to put the enlarged diameter portions 202b and 203b of the center screws 202 and 203 and the PTFE powder in a predetermined mold, and mold and calcinate at the same time by hot pressing. When PFA or silicone rubber is used, it is preferable to attach the enlarged diameter portions 202b and 203b of the center screws 202 and 203 to a predetermined mold and inject the molten PFA or silicone rubber into the gap between the molds. In addition, when the latching location (touch line) 204 (204a, 204b) performs each independent latching (seal) with the upper end surface of the 1st-2nd partition walls 121 and 122 (refer FIG. 1), it is. In order to reduce the required surface pressure, it is preferable that the cross section has a predetermined height such as a semicircle or a rectangle.

  As shown in FIG. 1, as the first and second actuating means 300 and 350 used in the present embodiment, a locking portion (touch line) 204 (204 a and 204 b) of the diaphragm 200 (the diaphragm main body 201) is used. There is no particular limitation as long as it can be reliably locked (seal) or unlocked from the upper end surfaces of the first and second partition walls 121 and 122, but an air cylinder is a preferred example. be able to. By configuring in this way, the upper and lower surfaces of the first and second partition walls 121 and 122 are independently locked or unlocked, and the first and second flow path chambers 111 and 112 are extended. The communication between the first and third flow path chambers 111 and 113 can be easily and reliably performed (blocking) or blocking (closing) and releasing (opening / closing the port) independently. In addition to using the above-described air cylinder as the operating means 300 and 350, a screw mechanism may be appropriately attached to the stems 303 and 353 (see FIG. 1), and the handle may be manually rotated. The actuating means 300 and 350 may be the same or different, but are preferably the same.

In the present embodiment, the first flow passage chamber 111, Ru der having a first sub-nozzle 131 communicating with the outside. With this configuration, the first sub-nozzle 131 can be used as, for example, a drain pipe in the first flow path chamber 111, and effectively prevents the occurrence of a liquid pool in the first flow path chamber 111. be able to.

Further, the second flow passage chamber 112, the second sub-nozzles 132 communicating with the outside, and the third flow passage chamber 113, a third sub-nozzle 133 communicating with the outside, Ru der those having respectively. With this configuration, the second sub-nozzle 132 and the third sub-nozzle 133 can be used, for example, as a drain pipe or as a CSIP steam or chemical introduction pipe, thereby preventing a liquid pool from being generated. While being able to prevent effectively, a simple and reliable sterilization process is enabled, and arrangement | positioning of another piping for it can be made easy.

Further, the first to third main nozzles 101, 102, 103 and the first to third sub-nozzles 131, 132 and 133, Ru der those arranged in the same direction. By configuring in this way, the structure can be simplified and the design, disassembly and assembly of the piping system can be facilitated. Moreover, generation | occurrence | production of a liquid pool can be prevented effectively.

  In addition, it is preferable that the first to third main nozzles 101, 102, 103 and the first to third sub nozzles 131, 132, 133 are installed and used in parallel with each other in the vertical direction. By constituting in this way, generation | occurrence | production of a liquid pool can be prevented still more effectively.

  In addition, flanges 101a, 102a, 103a, 131a, 132a, and 133a for connecting the first to third main nozzles 101, 102, and 103 and the first to third sub nozzles 131, 132, and 133 with external piping are provided. Each is preferably a ferrule type. With this configuration, it is possible to facilitate disassembly and reconnection of the diaphragm valve and other piping during maintenance, cleaning, and reassembly of the entire diaphragm valve.

  Further, as is apparent from the above description, the three-way diaphragm valve of the present invention is particularly effective when incorporated in an apparatus (liquid conditioner) that distributes and mixes chemicals. be able to.

  Hereinafter, a method of assembling the three-way diaphragm valve of the present embodiment will be described. As shown in FIG. 1, cylinder main bodies 306 and 356 are screwed into the lid body portion 301 and fixed with lock nuts 307 and 357. The diaphragm main body 201 is covered with the pressing portions 302 and 352, and the center screws 202 and 203 are fixed with locking nuts 304 and 354. The stems 303 and 353 are inserted into the pressing portions 302 and 352, and the stems 303 and 353 and the pressing portions 302 and 352 are fixed by the pressing pins 305 and 355. The stems 303 and 353 are put into the cylinder main bodies 306 and 356. Pistons 308 and 358 are inserted into the stems 303 and 353, and the pistons 308 and 358 are fixed with fixing nuts 309 and 359. Cylinder caps 310 and 360 are fitted and fixed to the cylinder bodies 306 and 356. The plugs 312 and 362 prevent air leakage from the stopper bolts 311 and 361. The assembly assembled in this manner is placed on the valve body 100, and a bolt 401 shown in FIG. 3 is screwed into a screw hole (not shown) of the valve body 201, thereby fixing the fixed portion 205 of the diaphragm 200 (diaphragm body 201). Is fixed to the peripheral upper end surfaces of the first to third channel chambers 111, 112, 113, whereby the first to third channel chambers 111, 112, 113 are sealed, and the assembly is completed. When air is introduced into the first air supply holes 313 and 363 of the diaphragm valve 10 that has been assembled, the pistons 308 and 358 move upward, and between the first and second flow path chambers 111 and 112 and between the first and first flow passage chambers 111 and 112. The blocking (closing) of communication between the third flow path chambers 111 and 113 can be released (the port is opened). On the other hand, when air is introduced into the second air supply holes 314, 364, the pistons 308, 358 move downward, and between the first to second flow path chambers 111, 112 and between the first to third flow path chambers 111. , 113 can be blocked (closed) (port closed). Such communication and blocking can be performed independently.

  Hereinafter, an example of the case where the three-way diaphragm valve of the present embodiment is incorporated in a liquid controller will be described. As shown in FIG. 5, the chemical solution flowing in from the second main nozzle 102 and / or the third main nozzle 103 flows between the first to second flow path chambers 111 and 112 and / or the first to third channels. When the flow path chambers 111 and 113 are communicated (open the port), the flow is transferred from the first main nozzle 101 to the next process via the first flow path chamber 111. When the first to second channel chambers 111 and 112 and / or the first to third channel chambers 111 and 113 are closed (the port is closed), the second main nozzle 102 and the second flow The chemical solution remaining in the channel chamber 112 and / or the third main nozzle 103 and the third channel chamber 113 is discharged to the outside from the second sub nozzle 132 and / or the third sub nozzle 133. When CSIPing the second main nozzle 102 and the second flow passage chamber 112 and / or the third main nozzle 103 and the third flow passage chamber 113, the second main nozzle 102 and / or the third flow passage chamber 113 is performed. Cleaning liquid and steam are introduced from the upstream side of the main nozzle 103 and discharged from the second sub nozzle 132 and / or the third sub nozzle 133 to the outside. When CSIPing the first main nozzle 101 and the first flow path chamber 111, cleaning liquid and steam are introduced from the upstream side of the first main nozzle 101 and discharged from the first sub nozzle 131 to the outside. Further, as shown in FIG. 6, the case shown in FIG. 5 may be installed upside down (inverted). In this case, the chemical solution flowing in from the first main nozzle 101 communicates between the first to second flow path chambers 111 and 112 and / or between the first to third flow path chambers 111 and 113 (ports). Is opened), it is transferred from the second main nozzle 102 and / or the third main nozzle 103 to the next process via the second flow path chamber 112 and / or the third flow path chamber 113. CSIP is the same as that shown in FIG.

  The three-way diaphragm valve of the present invention requires either distributing one fluid into two, selecting one of the two fluids, or mixing the two fluids into one, in particular, It is effectively used in various industrial fields such as pharmaceutical industry, food industry, chemical industry, etc. where refilling is essential.

It is sectional drawing which shows typically one Embodiment of the three-way diaphragm valve of this invention. It is a perspective view which shows typically the valve main-body part in embodiment shown in FIG. It is a perspective view which shows typically the whole external appearance of embodiment shown in FIG. FIG. 4A is a plan view schematically showing a diaphragm used in the embodiment shown in FIG. 1, and FIG. It is explanatory drawing which shows typically an example at the time of incorporating and using the embodiment shown in FIG. 1 in a liquid adjustment apparatus. It is explanatory drawing which shows typically the other example at the time of incorporating and using the embodiment shown in FIG. 1 in a liquid adjustment apparatus. It is explanatory drawing which shows an example of a liquid adjustment apparatus typically. It is a front view which shows typically an example at the time of incorporating and using the conventional diaphragm valve in a liquid adjustment apparatus. It is a side view of the example shown in FIG. It is explanatory drawing which shows typically the state of the liquid pool in the example shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Three-way diaphragm valve, 100 ... Valve body, 101, 102, 103 ... 1st-3rd main nozzle, 101a, 102a, 103a ... Flange of 1st-3rd main nozzle, 111, 112, 113 ... 1st-3rd flow path chamber, 121,122 ... 1st-2nd partition wall, 131, 132, 133 ... 1st-3rd sub nozzle, 131a, 132a, 133a ... 1st-3rd sub nozzle 200 ... diaphragm, 201 ... diaphragm body, 202, 203 ... center screw, 202a, 203a ... screw part, 202b, 203b ... diameter enlarged part, 204 ... diaphragm locking point (touch line), 204a ... first , The second locking point (touch line), 205, the diaphragm fixing point, 300, 350. Actuating means (air cylinder), 301: lid body, 302, 352 ... pressing part, 303, 353 ... stem, 304, 354 ... locking nut, 305, 355 ... pressing pin, 306, 356 ... cylinder body, 307, 357 ... Lock nut, 308, 358 ... Piston, 309, 359 ... Fixing nut, 310, 360 ... Cylinder cap, 311, 361 ... Stopper bolt, 312, 362 ... Plug, 313, 363 ... First air supply hole, 314, 364 ... second air supply hole, 315 to 319, 365 to 369 ... O-ring, 401 ... bolt, 801 ... diaphragm valve, 802 ... T-shaped pipe, 803 ... elbow pipe, 804 ... ferrule flange, 805 ... CSIP nozzle, 806 ... CSIP nozzle attached to valve, 807 ... port, 808 ... diaphragm, 809 ... Air actuator, 810 ... liquid reservoir, 901 ... mixing vessel, 902 ... storage tank, 903 ... sterilization filter, 904 ... heat exchanger.

Claims (5)

The first to third main nozzles serving as fluid inlets and outlets, the first to third flow channel chambers communicating with the first to third main nozzles and opened upward, respectively, and the first to third flows. A passage chamber having first to third sub-nozzles communicating with the outside; a first partition wall having a predetermined height separating the first passage chamber and the second passage chamber; and the first flow A valve body having a second partition wall having a predetermined height for partitioning the channel chamber and the third flow path chamber;
The upper and lower end surfaces of the first and second partition walls are respectively constructed and fixed so as to seal the first to third channel chambers on the peripheral upper end surfaces of the first to third channel chambers. A diaphragm that moves up and down to independently lock or unlock; and
The locking portion corresponding to the locking or unlocking of the diaphragm with the upper end surface of the first to second partition walls is independently pressed or released, and the locking portion is moved to the first. -The upper end surface of the second partition wall is independently locked or unlocked, and the communication between the first to second flow path chambers and the communication between the first to third flow path chambers are independent. And first to second actuating means that act to release (block) or release (close) the block,
A first main nozzle and a first sub nozzle communicating with the first flow path chamber; a second main nozzle and a second sub nozzle communicating with the second flow path chamber; and the third flow path chamber. three-way diaphragm valve, wherein the respective axes of the third main nozzle and a third sub-nozzle communicating arranged therein in the same direction. A first main nozzle and a first sub nozzle communicating with the first flow path chamber; a second main nozzle and a second sub nozzle communicating with the second flow path chamber; and the third flow path chamber. The three-way diaphragm valve according to claim 1, wherein the axes of the third main nozzle and the third sub nozzle communicating with each other are arranged in the vertical direction . Said first to third main nozzle and the first to third sub-nozzles, flange for connection to the external piping, three-way diaphragm valve according to claim 1 or 2 is a ferrule type, respectively. The first to the second actuating means, three-way diaphragm valve according to any one of claims 1 to 3, respectively an air cylinder. Chemical distribution, three-way diaphragm valve according to any one of claims 1 to 4 used incorporated in mixing apparatus.

Images