JP6601013B2 - Valve device - Google Patents

Description

  The present invention relates to a valve apparatus mounted on a fluid processing apparatus such as a chemical testing apparatus, an environmental analysis apparatus, or a biotechnology research instrument used for various types of analysis using a fluid as a specimen or a reagent, and a gasket used therefor.

  In the above-mentioned various fluid processing apparatuses, improvement of measurement accuracy, improvement of inspection speed, minimization of specimens and reagents, miniaturization of the apparatus, etc. are important issues. An accurate valve device is used. Between the fluid processing device and the valve device, for example, a gasket for preventing fluid leakage as shown in Patent Document 1 is attached.

Japanese Patent Application Laid-Open No. 07-35857

  The various fluid processing apparatuses are provided with a flow path side port, and the valve body of the valve apparatus is provided with a valve side port. The gasket has a through hole that communicates the flow path side port and the valve side port.

  Since each fluid processing apparatus is individually designed with a channel-side port according to its configuration, the position of the opening of the channel-side port is usually different. Accordingly, it is desirable that the valve device be designed to be compatible with various types of fluid treatment devices. However, since such a valve device requires a plurality of types of valve bodies each having a valve side port corresponding to the position of the opening of the flow path side port of each fluid processing device, the cost of the valve device can be reduced. It is a factor that prevents Further, it is necessary to change the configuration of the valve main body, the valve body and the like according to the position of the valve side port, which contributes to the cost increase of the valve device.

  The present invention has been devised in view of the above circumstances, and provides a valve device in which compatibility compatibility of the valve main body with various fluid processing devices having different positions of the openings of the flow path side ports is improved. This is the main purpose.

  The present invention is a valve device mounted on a fluid processing apparatus having a first flow path side port, and defines a valve chamber and communicates the valve chamber with the first flow path side port. A valve body that opens and closes the first valve-side port, and a gasket that is mounted between the valve body and the fluid treatment device, wherein the gasket is on the first flow path side. Between the port and the first valve side port, there is a first through hole that provides a space for communicating them, and the opening of the first flow path side port and the first valve side port The opening is provided at a position different from each other when viewed from the thickness direction of the gasket, and the first through hole is an opening of the first flow path side port as viewed from the thickness direction of the gasket. And including the opening of the first valve side port Moni, characterized in that it has a hole profile which extends in the outer region of the opening of the opening and the first valve-side port of the first flow path side port.

  In the valve device according to the present invention, the opening of the first flow path port and the opening of the first valve side port are completely separated from each other without overlapping when viewed from the thickness direction of the gasket. It is desirable.

  In the valve device according to the present invention, it is preferable that the hole contour of the first through hole of the gasket is elliptical or oval.

  In the valve device according to the present invention, the fluid processing device has a second flow path side port, and the valve body is formed with a second valve side port for communicating with the second flow path side port. And the gasket has a second through hole between the second flow path side port and the second valve side port to provide a space for communicating them with each other. The opening and the opening of the first valve side port are provided at different positions when viewed from the thickness direction of the gasket, and the second through hole is viewed from the thickness direction of the gasket. The second flow passage side port and the second valve side port opening, and extend to the outer region of the second flow passage side port opening and the second valve side port opening. It is desirable to have a hole profile.

  In the valve device according to the present invention, the fluid treatment device has a third flow path side port, and the valve body is formed with a third valve side port for communicating with the third flow path side port. The gasket has a third through hole between the third flow path side port and the third valve side port to provide a space for communicating with each other, and the third through hole is As viewed from the thickness direction of the gasket, the opening of the third flow path side port and the opening of the third valve side port are included, and the opening of the third flow path side port and the third valve side port It is desirable to have an extended hole profile in the outer region of the opening.

  In the valve device according to the present invention, the port centers of the first valve side port, the second valve side port, and the third valve side port are aligned on the same straight line when viewed from the thickness direction of the gasket. It is desirable that it is arranged without.

  In the valve device according to the present invention, it is preferable that the valve body includes a diaphragm that partitions the valve chamber together with the valve body.

  In the valve device according to the present invention, it is preferable that the valve device further includes drive means for driving the valve body.

  In the valve device according to the present invention, it is preferable that the driving means includes a coil that generates electromagnetic force.

A second invention of the present invention is a gasket that is mounted between a fluid treatment device having a flow path side port and a valve body in which the valve side port is formed, and is provided between the flow path side port and the valve side port. A through hole that provides a space for communicating them with each other, and the opening of the flow path side port and the opening of the valve side port are mutually viewed from the thickness direction of the gasket. Provided in different positions, the through-hole encloses the opening of the flow path side port and the opening of the valve side port, as viewed from the thickness direction of the gasket, and the opening of the flow path side port And it has the hole outline extended in the outer side area | region of the opening part of the said valve side port, It is characterized by the above-mentioned.

  The valve device of the present invention includes a gasket mounted between the valve main body and the fluid processing device, and the gasket has a first through hole between the first flow path side port and the first valve side port. Thereby, a space is provided for allowing the first flow path side port and the first valve side port to communicate with each other.

  The opening of the first flow path side port and the opening of the first valve side port are provided at different positions as viewed from the thickness direction of the gasket. The first through hole has a hole contour that encompasses the opening of the first flow path side port and the opening of the first valve side port, as viewed from the thickness direction of the gasket. Furthermore, the hole contour is formed to extend to the outer region of the opening of the first flow path side port and the opening of the first valve side port. Thereby, even if it is a case where a valve apparatus is mounted | worn with the various fluid processing apparatuses from which the position of the 1st flow path side port opening part differs, a 1st flow path side port and a 1st valve side port are 1st through-holes. Communicate with each other. Therefore, compatibility compatibility of the valve main body with various fluid processing apparatuses having different positions of the openings of the first flow path side ports can be improved, and the cost of the valve apparatus can be reduced.

  The gasket of the present invention is mounted between the valve main body and the fluid processing apparatus, and has a through hole between the flow path side port and the valve side port. Thereby, the space for making a flow path side port and a valve side port communicate with each other is provided.

  The opening of the flow path side port and the opening of the valve side port are provided at different positions as viewed from the thickness direction of the gasket. The through hole has a hole contour that encompasses the opening of the flow path side port and the opening of the valve side port as viewed from the thickness direction of the gasket. The hole contour is formed to extend to the outer region of the opening of the flow path side port and the opening of the valve side port. As a result, even when the valve device is mounted on various fluid processing apparatuses having different positions of the flow path side port opening, the flow path side port and the valve side port are communicated with each other through the through hole. Therefore, the compatibility of the valve main body with various fluid processing apparatuses having different positions of the flow path side port openings can be improved, and the cost of the valve apparatus can be reduced.

It is sectional drawing which shows the 1st state of the valve apparatus which concerns on one Embodiment of this invention. It is the top view which looked at the valve main body of FIG. 1, the gasket, and the flow-path block from the valve body side. It is a top view of a valve main body, a gasket, and a flow path block at the time of mounting a valve apparatus in the fluid processing apparatus from which the position of the 1st flow path side port differs from FIG. It is the perspective view which looked at the valve main body of FIG. 1 from the valve body side. It is the perspective view which looked at the valve main body of FIG. 4 from the fluid processing apparatus side. It is a perspective view of the gasket of FIG. It is sectional drawing which shows the 2nd state of the valve apparatus of FIG. It is a top view which shows the modification of the gasket of FIG. 2 with a valve main body and a flow-path block. It is a top view which shows the modification of the valve main body shown by FIG. 2 with a gasket and a flow-path block.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of the valve device 1 of the present embodiment. As shown in FIG. 1, the valve device 1 of the present embodiment is mounted on a fluid processing apparatus 100 and supplies a fixed amount of fluid to the fluid processing apparatus 100.

  The fluid processing apparatus 100 includes a flow path block 110 in which a flow path is formed. The flow path block 110 is attached to the main body of the fluid processing apparatus 100. The flow path block 110 includes a first flow path side port 111 through which the fluid supplied from the valve device 1 flows.

The valve device 1 includes a valve body 2, a valve body 3, and a gasket 4. The valve body 2 defines the valve chamber 20. A first valve side port 21 is formed in the valve body 2. The first valve side port 21 is
The valve chamber 20 and the first flow path side port 111 are communicated.

  The valve body 3 opens and closes the first valve side port 21. Thereby, the fluid is supplied from the valve chamber 20 to the first flow path side port 111. FIG. 1 shows a first state in which the first valve side port 21 is opened.

  The gasket 4 is mounted between the valve body 2 and the fluid processing apparatus 100. The gasket 4 prevents fluid leakage between the valve body 2 and the fluid processing apparatus 100. The gasket 4 has a first through hole 41 between the first flow path side port 111 and the first valve side port 21. The first through hole 41 provides a space for allowing the first flow path side port 111 and the first valve side port 21 to communicate with each other.

  FIG. 2 is a plan view of the gasket 4 as viewed from the thickness direction Z of the gasket 4 (see FIG. 1). In the figure, the first valve side port 21 and the like of the valve body 2 are indicated by a one-dot chain line, and the first flow path side port 111 and the like of the fluid processing apparatus 100 are indicated by a broken line, and the gasket 4 drawn by a solid line is overlapped with each other. (Hereinafter, the same applies to FIGS. 3, 8 and 9).

  The opening 111a of the first flow path side port 111 and the opening 21a of the first valve side port 21 are provided at different positions as viewed from the thickness direction Z of the gasket 4 (that is, the direction in which the fluid flows). ing. That is, the opening 111 a and the opening 21 a are arranged so as to be shifted in the longitudinal direction X of the valve body 2. In the present embodiment, as shown in FIG. 2, the opening 111 a of the first flow path side port 111 and the opening 21 a of the first valve side port 21 are partially viewed from the thickness direction Z of the gasket 4. Overlapping.

  The first through hole 41 has an opening portion 111 a and a contour portion 44 that includes the opening portion 21 a provided at different positions as viewed from the thickness direction Z of the gasket 4. The hole outline 44 is formed to extend to the outer region of the opening 111a and the opening 21a.

  FIG. 3 shows the gasket 4 when the valve device 1 is attached to the fluid processing apparatus 100 having the flow path block 110 in which the position of the opening 111a of the first flow path side port 111 is different from that in FIG.

  In the flow path block 110 shown in FIG. 3, the position of the opening 111 a is shifted in the longitudinal direction X of the valve body 2. In the present invention, the first through hole 41 includes the opening 111a and the opening 21a, and has an extended hole outline 44 in the outer region thereof. Therefore, even in the case shown in FIG. The road side port 111 and the first valve side port 21 are communicated with each other through the first through hole 41. Therefore, compatibility compatibility of the valve main body 2 with various fluid processing apparatuses 100 having different positions of the opening 111a is increased, and the cost of the valve apparatus 1 can be reduced.

  Depending on the specifications of the fluid processing apparatus 100, the arrangement of the first flow path side port 111 is different, and the opening 111a and the opening 21a are completely overlapped with each other when viewed from the thickness direction Z of the gasket 4 May be separated. In the present invention, even in the case of the opening 111a and the opening 21a, the first flow path side port 111 and the first valve side port 21 are communicated with each other by the gasket 4 having the hole contour 44.

  The hole outline 44 of the first through hole 41 of the gasket 4 is preferably elliptical or oval. Such a hole contour 44 can effectively prevent fluid leakage between the first flow path side port 111 and the first valve side port 21, and can ensure a large expanded region of the hole contour 44. .

  As shown in FIGS. 1 and 2, the flow path block 110 of the fluid processing apparatus 100 has a second flow path side port 112.

  A second valve side port 22 is formed in the valve body 2. The second valve side port 22 allows the valve chamber 20 and the second flow path side port 112 to communicate with each other. In the present embodiment, the second valve side port 22 is always open. Thereby, the fluid is supplied from the second flow path side port 112 to the valve chamber 20.

  The gasket 4 has a second through hole 42 between the second flow path side port 112 and the second valve side port 22. The first through hole 41 and the second through hole 42 are separated by a partition wall 47. The second through hole 42 provides a space for allowing the second flow path side port 112 and the second valve side port 22 to communicate with each other.

  As shown in FIG. 2, the opening 112 a of the second flow path side port 112 and the opening 22 a of the second valve side port 22 are provided at different positions as viewed from the thickness direction Z of the gasket 4. ing. That is, the opening 112 a and the opening 22 a are arranged so as to be shifted in the longitudinal direction X of the valve body 2. In the present embodiment, as shown in FIG. 2, the opening 112 a of the second flow path side port 112 and the opening 22 a of the second valve side port 22 are partly viewed from the thickness direction Z of the gasket 4. They are completely separated without overlapping.

  The second through-hole 42 has a contour 45 that includes the opening 112 a and the opening 22 a provided at different positions as viewed from the thickness direction Z of the gasket 4. The hole contour 45 is formed to extend to the outer region of the opening 112a and the opening 22a.

  Thereby, as shown in FIG. 3, even when the valve device 1 is attached to various fluid processing devices 100 in which the position of the opening 112 a of the second flow path side port 112 is different from that in FIG. 2, The second flow path side port 112 and the second valve side port 22 are communicated with each other through the second through hole 42. Therefore, compatibility compatibility of the valve main body 2 with various fluid processing apparatuses 100 having different positions of the opening 112a is enhanced, and the cost of the valve apparatus 1 can be reduced.

  Depending on the specifications of the fluid processing apparatus 100, the arrangement of the second flow path side port 112 is different, and the opening 112 a and the opening 22 a may partially overlap when viewed from the thickness direction Z of the gasket 4. In the present invention, even in the case of the opening 112a and the opening 22a, the second flow path side port 112 and the second valve side port 22 are communicated with each other by the gasket 4 having the hole contour 45.

  The hole outline 45 of the second through hole 42 of the gasket 4 is preferably elliptical or oval. Such a hole contour 45 can effectively prevent fluid leakage between the second flow path side port 112 and the second valve side port 22, and can ensure a large expanded region of the hole contour 45. .

  As shown in FIGS. 1 and 2, the flow path block 110 of the fluid processing apparatus 100 has a third flow path side port 113. The first flow path side port 111, the second flow path side port 112, and the third flow path side port 113 are arranged side by side on the same straight line.

  A third valve side port 23 is formed in the valve body 2. The third valve side port 23 communicates the valve chamber 20 and the third flow path side port 113. The 1st valve side port 21, the 2nd valve side port 22, and the 3rd valve side port 23 are arranged along with the same straight line.

  The valve body 3 opens and closes the third valve side port 23. Thereby, the fluid is supplied from the valve chamber 20 to the third flow path side port 113. Thereby, the fluid is supplied from the valve chamber 20 to the third flow path side port 113. In the first state shown in FIG. 1, the third valve side port 23 is closed.

  The gasket 4 has a third through hole 43 between the third flow path side port 113 and the third valve side port 23. The second through hole 42 and the third through hole 43 are separated by a partition wall 48. The third through hole 43 provides a space for allowing the third flow path side port 113 and the third valve side port 23 to communicate with each other.

  As shown in FIG. 2, the opening 113 a of the third flow path side port 113 and the opening 23 a of the third valve side port 23 are provided at different positions as viewed from the thickness direction Z of the gasket 4. ing. That is, the opening 113 a and the opening 23 a are arranged so as to be shifted in the longitudinal direction X of the valve body 2. In the present embodiment, as shown in FIG. 2, the opening 113 a of the third flow path side port 113 and the opening 23 a of the third valve side port 23 are partially viewed from the thickness direction Z of the gasket 4. They are completely separated without overlapping.

  The third through-hole 43 has an opening 113 a and a contour 46 that includes the opening 23 a provided at different positions as viewed from the thickness direction Z of the gasket 4. The hole contour 46 is formed to extend to the outer region of the opening 113a and the opening 23a.

  Thereby, as shown in FIG. 3, even when the valve device 1 is mounted on various fluid processing devices 100 in which the position of the opening 113a of the third flow path side port 113 is different from that in FIG. The third flow path side port 113 and the third valve side port 23 communicate with each other through the third through hole 43. Therefore, compatibility compatibility of the valve main body 2 with various fluid processing apparatuses 100 having different positions of the opening 113a is increased, and the cost of the valve apparatus 1 can be reduced.

  Depending on the specifications of the fluid processing apparatus 100, the arrangement of the third flow path side port 113 is different, and the opening 113 a and the opening 23 a may partially overlap when viewed from the thickness direction Z of the gasket 4. In the present invention, the third flow path side port 113 and the third valve side port 23 are communicated with each other by the gasket 4 having the hole contour 46 even in the case of the opening 113a and the opening 23a.

  The hole contour 46 of the third through hole 43 of the gasket 4 is preferably elliptical or oval. Such a hole contour 46 can effectively prevent fluid leakage between the third flow path side port 113 and the third valve side port 23 and can ensure a large expanded region of the hole contour 46. .

  4 and 5 show the valve body 2. The valve body 2 is made of, for example, a resin material. A valve seat 21 b and a valve seat 23 b are provided around the opening on the valve chamber 20 side of the first valve side port 21 and the third valve side port 23. The valve seat 21b and the valve seat 23b are formed so as to protrude toward the valve body 3 (see FIG. 1).

  The valve body 2 has a mounting surface 24 to the fluid processing apparatus 100 on the side opposite to the valve chamber 20. The mounting surface 24 is formed with a recess 25 for mounting the gasket 4. The first valve side port 21, the second valve side port 22, and the third valve side port 23 are formed through the recess 25 from the valve chamber 20.

  FIG. 6 shows the gasket 4. The gasket 4 is made of an elastic material such as rubber, for example. The shape of the outer edge of the gasket 4 is formed so as to correspond to the recess 25. The thickness of the gasket 4 is set larger than the depth of the recess 25. A protrusion 49 protrudes in a direction perpendicular to the direction in which the first through hole 41, the second through hole 42, and the third through hole 43 are arranged. The protrusion 49 restricts the mounting direction of the gasket 4 in the recess 25.

  The thickness in the direction perpendicular to the thickness direction Z of the gasket 4 at the peripheral portion 40 of the first through hole 41 is preferably 1 mm or more, for example. Such a peripheral portion 40 can withstand the pressure of the fluid flowing in the first through hole 41 and effectively prevent fluid leakage from between the gasket 4, the valve body 2, and the flow path block 110. The thickness in the direction perpendicular to the thickness direction Z of the gasket 4 around the second through hole 42 and the third through hole 43 is the same as described above. The thickness in the direction perpendicular to the thickness direction Z of the gasket 4 of the partition walls 47 and 48 is the same as described above.

  As shown in FIG. 1, in the present embodiment, the valve body 2 is equipped with a sub-block 7 for supporting the valve body 3. The valve body 3 includes a diaphragm 31. The diaphragm 31 partitions the valve chamber 20 together with the valve body 2. The diaphragm 31 is formed of an elastic material such as rubber, for example.

  The diaphragm 31 has an outer peripheral portion 31a that extends outward. The outer peripheral portion 31a is in close contact with the valve body 2 by being sandwiched and held / restrained by the valve body 2 and the sub-block 7. Thereby, the valve chamber 20 is sealed and fluid leakage is prevented.

  The valve device 1 further includes driving means 5 for driving the valve body 3. When driven by the driving means 5, the valve body 3 swings in a seesaw shape around the support shaft 32. Accordingly, the diaphragm 31 comes into close contact with one of the valve seat 21b or the valve seat 23b and is separated from the other. Thereby, the 1st valve side port 21 or the 3rd valve side port 23 is opened and closed.

  The drive means 5 includes a first plunger (movable iron core) 51, a second plunger 52, a first coil spring 53, a second coil spring 54, a solenoid coil 55, and a fixed iron core 56.

  The first plunger 51 is disposed above the third valve side port 23. The first plunger 51 is inserted into a coil bobbin 57 around which the solenoid coil 55 is wound. The fixed iron core 56 is formed with a recess in which the first coil spring 53 is loaded. One end of the first coil spring 53 contacts the fixed iron core 56, and the other end contacts the first plunger 51. The first coil spring 53 pushes down the first plunger 51 toward the first contact portion 36 of the valve body 3, and accordingly, the distal end portion of the first plunger 51 is moved to the first contact portion of the valve body 3. The part 36 is pressed. The spring load of the first coil spring 53 is set larger than the spring load of the second coil spring 54.

  The second plunger 52 is disposed above the first valve side port 21. One end of the second coil spring 54 is in contact with the second plunger 52, and the other end is in contact with the sub block 7. The second coil spring 54 pushes down the second plunger 52 toward the second contact portion 37 side of the valve body 3, and accordingly, the distal end portion of the second plunger 52 is moved to the second contact portion of the valve body 3. The part 37 is pressed.

  The solenoid coil 55 is wound around a cylindrical coil bobbin 57. The solenoid coil 55 generates an electromagnetic force when energized. A predetermined current flows through the solenoid coil 55 so as to generate an electromagnetic force larger than the difference between the load of the first coil spring 53 and the load of the second coil spring 54. The first plunger 51, the first coil spring 53, the solenoid coil 55, the fixed iron core 56, and the coil bobbin 57 are accommodated in the frame 8. Among these, the solenoid coil 55, the fixed iron core 56, and the coil bobbin 57 are fixed to the frame 8. On the other hand, the second plunger 52 and the second coil spring 54 are accommodated in the sub block 7 together with the valve body 3.

  Hereinafter, the opening / closing operation | movement of the valve apparatus 1 is demonstrated. As described above, since the spring load of the first coil spring 53 is larger than the spring load of the second coil spring 54, the elastic force generated by the first coil spring 53 is the elasticity generated by the second coil spring 54. Greater than power. Therefore, in the normal state, the posture of the diaphragm 31 is maintained in a posture rotated counterclockwise in the drawing as shown in FIG. 1, the third valve side port 23 is closed, and the first valve side is closed. Port 21 is opened. Accordingly, as indicated by an arrow A, the fluid that has flowed into the valve chamber 20 from the second valve side port 22 is sent from the first valve side port 21 to the first flow path side port 111 of the fluid processing apparatus 100. .

  FIG. 7 shows the valve device 1 in the second state in which the third valve side port 23 is opened. When a predetermined current flows through the solenoid coil 55, the first plunger 51 moves in a direction in which the first coil spring 53 is compressed by the electromagnetic force. At this time, since the tip of the second plunger 52 presses the second contact portion 37 of the valve body 3, the diaphragm 31 is rotated clockwise, the first valve side port 21 is closed, The three valve side port 23 is opened. Accordingly, as indicated by an arrow B, the fluid that has flowed into the valve chamber 20 from the second valve side port 22 is sent from the third valve side port 23 to the third flow path side port 113 of the fluid processing apparatus 100. .

  FIG. 8 shows a gasket 4A that is a modification of the gasket 4 shown in FIG.

  The gasket 4 </ b> A is different from the gasket 4 in that the second through hole 42 </ b> A has a hole outline 45 </ b> A that is expanded in the short direction Y of the valve body 2. In the present embodiment, the second through hole 42 </ b> A is extended to the protruding portion 49 side. Thereby, the hole outline 45 </ b> A is formed in an approximately L shape when viewed from the thickness direction Z of the gasket 4.

  By using the gasket 4A described above, the center of the second flow path side port 112A is shifted from the centers of the first flow path side port 111 and the third flow path side port 113 in the lateral direction Y of the valve body 2. The valve body 2 can be mounted on the flow path block 110A. That is, by using the gasket 4A, the port centers of the first flow path side port 111, the second flow path side port 112A, and the third flow path side port 113 are arranged without being aligned on the same straight line when viewed from the thickness direction Z. The valve body 2 can be mounted on the flow path block 110A.

  In the gasket 4 </ b> A, the hole outline 44 of the first through hole 41 may be extended in the short direction Y of the valve body 2, similarly to the second through hole 42 </ b> A. Furthermore, the hole contour 46 of the third through hole 43 may be expanded in the short direction Y of the valve body 2. By using such a gasket 4A, the port centers of the first flow path side port 111, the second flow path side port 112, or the third flow path side port 113 are aligned on the same straight line when viewed from the thickness direction Z. The valve body 2 can be mounted on the flow path block 110A that is arranged without any gap.

  FIG. 9 shows the ports 21, 22B, 23 of the valve body 2B, which is a modification of the valve body 2 shown in FIG. 2, together with the gasket 4B and the like.

  The valve body 2B is arranged such that the center of the second valve side port 22B is shifted in the short direction Y of the valve body 2B with respect to the centers of the first valve side port 21 and the third valve side port 23. This is different from the valve body 2 shown in FIG. By using the gasket 4B having the same configuration as the gasket 4A described above, the valve body 2B can be mounted on the flow path block 110 in which the positions of the openings of the respective ports are different. That is, by using the gasket 4B, the center of the second valve side port 22B is shifted from the centers of the first valve side port 21 and the third valve side port 23 in the short direction Y of the valve body 2B. The valve main body 2 </ b> B can be attached to the flow path block 110.

  In the valve main body 2B, the center of the first valve side port 21 is the center of the second valve side port 22 and the third valve side port 23 of the valve main body 2B, similar to the second valve side port 22B. It may be displaced in the short direction Y. In this case, the gasket 4 </ b> B in which the hole outline 44 of the first through hole 41 is expanded in the short direction Y of the valve body 2 is used.

  Further, the center of the third valve side port 23 may be arranged so as to be shifted in the short direction Y of the valve body 2B with respect to the centers of the first valve side port 21 and the second valve side port 22. In this case, the gasket 4 </ b> B in which the hole contour 46 of the third through hole 43 is expanded in the short direction Y of the valve body 2 is used.

  As mentioned above, although the valve apparatus and gasket of this invention were demonstrated in detail, this invention is changed in various aspects, without being limited to said specific embodiment, and is implemented.

DESCRIPTION OF SYMBOLS 1 Valve apparatus 2 Valve body 3 Valve body 4 Gasket 5 Driving means 20 Valve chamber 21 1st valve side port 21a Opening part 41 1st through-hole 44 Hole outline 100 Fluid processing apparatus 111 1st flow path side port 111a Opening part

Claims (10)

A valve device attached to a fluid treatment apparatus having a plurality of flow path ports,
A valve body in which a plurality of valve-side ports for defining the valve chamber and individually communicating the valve chamber and the plurality of flow-path-side ports are formed;
A valve body that opens and closes at least one of the plurality of valve-side ports;
A gasket mounted between the valve body and the fluid treatment device,
The valve body has a mounting surface to the fluid treatment device, and the mounting surface is formed with a recess for mounting the gasket, and each of the plurality of valve-side ports has the recess from the valve chamber. Is formed through,
The gasket is formed of an elastic material and has a thickness larger than the depth of the recess, and the plurality of flow path side ports and the plurality of valve side ports are individually connected to the recess. Having a plurality of through holes that provide a space for communication;
Each of the plurality of through-holes includes an opening portion of the valve-side port communicating with the through-hole as viewed from the thickness direction of the gasket, and has a hole contour expanded to an outer region of the opening portion. A valve device comprising: The hole contour of each through hole is spaced outward from the contour line of the opening of the valve-side port communicating with the through hole as viewed from the thickness direction of the gasket. Valve device. The valve device according to claim 1 or 2, wherein the hole contour of each through hole is elliptical or oval. The respective port centers of the plurality of valve-side ports are arranged on the same straight line as viewed from the thickness direction of the gasket, and the hole contour of each through hole is long along the direction in which the respective port centers are arranged. 4. The valve device according to claim 3 , wherein the valve device is elliptical or oval . Three valve-side ports are formed in the valve body, and the valve body includes a diaphragm that partitions the valve chamber together with the valve body, and swings like a seesaw around a support shaft so that the three valve The valve device according to claim 1 or 2 , wherein the valve device is configured to open and close two of the side ports . The hole outline of each through hole communicating with the two valve-side ports is an ellipse or an ellipse that is long along a longitudinal direction of the valve body that is a direction perpendicular to the support shaft. Valve device. The respective port centers of the three valve side ports are arranged along the same straight line as viewed from the thickness direction of the gasket, and the hole contour of each through hole is a direction perpendicular to the support shaft. The valve device according to claim 6 , wherein the valve device has an oval shape or an oval shape that is long along the longitudinal direction of the valve body . Of the three valve-side ports, the hole contour of the through hole communicating with the remaining valve-side port different from the two valve-side ports is a short side of the valve body that is in a direction parallel to the support shaft 7. A valve device according to claim 6, which is expanded in the direction. The valve device according to any one of claims 1 to 8 , further comprising driving means for driving the valve body. The valve device according to claim 9 , wherein the driving means includes a coil that generates electromagnetic force.

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