JP2009115151A - Valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve device that can be compactly configured and executes communication between each discharge-side flow path and an inlet-side flow path in a short period of time while allowing arrangement of a large number of discharge-side flow paths. <P>SOLUTION: The valve device has a plurality of nozzles 4A, 4B, which are protrudingly provided on one face of a substrate 3 while penetrating through the substrate 3 so as to correspond to any one of a plurality of discharge-side flow paths and to be arrayed in the circumferential direction of the substrate 3, a freely rotatable nozzle-switching plate 14, which is brought into pressure contact with the rear face 3C of the face 3B, where the nozzles 4A, 4B of the substrate 3 protrude in order to selectively cover an opening 5 of each nozzle 4 formed in the substrate 3 while being made to communicate with an inlet-side flow path 32, and a drive means 10 that rotationally drives the nozzle-switching plate 14 so that the inlet-side flow path 32 communicates with a specific discharge-side flow path. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a valve device, and more particularly to a valve device having a plurality of discharge-side flow paths.

  2. Description of the Related Art Conventionally, a valve device having a single suction side flow path and a plurality of discharge side flow paths that selectively communicate with the suction side flow path is known (for example, see Patent Document 1). Such a valve device, for example, in an analyzer, includes a plurality of containers filled with different reagents communicating with each discharge-side flow path, and at least selected from among the reagents from the suction-side flow path. If a liquid or gas that reacts with one specific reagent is supplied, introduced into a specific discharge-side flow path, and the reaction result with the reagent in the container communicating with this discharge-side flow path is analyzed, Reaction states with a plurality of specific reagents can be easily obtained.

JP 2007-170521 A

  However, in the valve device described in Patent Document 1 described above, since the plurality of discharge-side flow paths are arranged in a row in the horizontal direction, when the number of discharge-side flow paths increases, the lateral dimension of the valve device becomes larger. In addition, there is a problem in that it takes time to communicate with the suction side flow path if the positions of the two discharge side flow paths that are continuously communicated with the suction side flow path are far apart. It was. Therefore, there is a problem that the number of discharge side channels cannot be increased so much.

  Therefore, the present invention can be configured in a compact manner, can perform communication between each discharge-side flow path and the suction-side flow path in a short time, and can provide a large number of discharge-side flow paths. Is intended to provide.

  In order to achieve the above-mentioned object, the valve device according to claim 1 of the present invention is characterized by one suction side flow path and a plurality of discharge side flows selectively communicated with the suction side flow path. In the valve device having a passage, the substrate passes through the substrate so as to be arranged in the circumferential direction of the substrate so as to correspond to any of the plurality of discharge-side flow paths, and is protruded from one surface of the substrate. A plurality of nozzles, and a back surface of a surface from which the nozzles of the substrate protrude, are selectively pressed to cover the openings of the nozzles formed in the substrate, and communicated with the suction side flow path. It has a nozzle switching plate and driving means for driving the nozzle switching plate to rotate so that the suction side flow path communicates with the specific discharge side flow path.

  By adopting such a configuration, the nozzle switching plate can be efficiently covered with the circumferentially arranged nozzles so as to communicate with the suction side flow path.

  The valve device according to a second aspect of the present invention is characterized in that the plurality of nozzles are formed in a plurality of rows at intervals in the radial direction of the substrate, and the nozzles in each row are in a circumferential direction. It is in the point which has shifted.

  And by employ | adopting such a structure, many nozzles can be arrange | positioned over several rows.

  The valve device according to claim 3 of the present invention is that the nozzle switching plate is pressed against the substrate by an elastic member.

  And by adopting such a configuration, the space between the substrate and the nozzle switching plate can be kept airtight or liquid tight.

  The valve device according to claim 3 of the present invention is characterized in that the drive means includes a stepping motor and a speed reducer that decelerates the drive of the stepping motor.

  By adopting such a configuration, the switching plate can be rotated by a minute angle unit by driving the stepping motor, and can be favorably opposed to a desired nozzle.

  According to the valve device of the present invention, communication between a desired nozzle among the nozzles facing each discharge-side flow path and the suction-side flow path can be quickly performed by turning the nozzle switching plate.

  1 to 3 show an entire valve device according to the present invention. The valve device 1 according to the present invention is provided with a substantially flat substrate 3 located in a vertical plane at one end. A rectangular base 2 is provided, and the base 2 is placed on a member (not shown).

  As shown in detail in FIG. 2, the substrate 3 has an arc-shaped outer peripheral surface 3 </ b> A except for a lower end portion that is a connection portion with the base 2, and the substrate 3 includes the substrate 3. 8 × 2 rows of nozzles 4A1, 4A2,... 4A8, 4B1, 4B2,..., Which pass through the substrate 3 so as to be arranged in the circumferential direction and project from one surface 3B of the substrate 3. 4B8. Of these two rows of nozzles 4A, 4B, nozzles 4A1, 4A2,... 4A8 are located at the same radius from the center of the substrate 3. The nozzles 4B1, 4B2,... 4B8 are also located at the same radius from the center of the substrate 3. Accordingly, the opening 5 of each nozzle 4 is located on the surface 3C of the substrate 3.

  The nozzles 4A are arranged at positions where the dimensions from the center of the substrate 3 are larger than the nozzles 4B. The nozzles 4A and 4B have different positions in the circumferential direction of the substrate 3.

  The nozzles 4A and 4B may be one row or three or more rows, and the number of nozzles 4A and 4B in each row can be selected as appropriate. Each of the nozzles 4A and 4B is connected to a corresponding discharge-side flow path (not shown).

  As shown in detail in FIG. 2, a holding plate 6 is erected on the base 2 so as to be spaced from the substrate 3, and an opening 7 is formed at the upper end of the holding plate 6. A rotatable drive shaft 9 described later is inserted into the opening 7. The housing 9A of the drive shaft 9 is fixed to the holding plate 6 by screws 8 and 8.

  The base end side of the drive shaft 9 is connected to an output shaft 11A of a stepping motor 11 which is a driving means via a speed reducer 10 having a planetary gear mechanism. It is rotated by driving. Further, a fixed plate 12 is fitted on the front end side of the drive shaft 9 so as to be rotatable together with the drive shaft 9.

  A guide protrusion 13 having a columnar shape is driven so as to protrude in the direction of the drive shaft 9 at the center of the surface 3C opposite to the surface 3B on which the nozzles 4A and 4B of the substrate 3 project. It protrudes coaxially with the shaft 9. A nozzle switching plate 14 is interposed between the substrate 3 and the fixed plate 12.

  A boss 15 that protrudes in the direction of the fixed plate 12 and abuts against the surface 12A of the fixed plate 12 protrudes from the central portion of the nozzle switching plate 14. The inner diameter of the boss 15 is substantially equal to the outer diameter of the guide protrusion 13, and the boss 15 is fitted to the guide protrusion 13 so as to be rotatable.

  Further, the surface 12A of the fixed plate 12 is formed with a recess 16 that protrudes toward the other surface 12B. In the recess 16, a projection 17 that protrudes from the nozzle switching plate 14 is densely formed. The fixed plate 12 and the nozzle switching plate 14 are integrally rotated by being fitted.

  As shown in FIG. 4, a motor pump 30 for supplying a desired gas or liquid to the valve device 1 is disposed in the vicinity of the valve device 1, and a discharge side pipe line of the motor pump 30 is provided. 31 is provided with a suction-side flow path 32 that is made of a material such as resin, has flexibility, and is twistable.

  As shown in detail in FIG. 2, the fixing plate 12 is formed with an opening 18 through which the suction side flow path 32 is inserted, and the suction side flow path 32 is connected to the nozzle through the opening 18. It faces the switching plate 14.

  On the other hand, a projection 19 that faces the suction side flow path 32 is formed on the nozzle switching plate 14 at a portion that faces the suction side flow path 32, and the suction side flow path 32 is formed in the projection 19. A flow path 20 communicating with 32 is formed. The suction side flow path 32 and the protrusion 19 are connected so that the flow path 20 communicates with the suction side flow path 32. Further, a port 21 is formed in the flow path 20 for communicating the flow path 20 with one of the nozzles 4A and 4B. The port 21 can communicate with both the outer nozzle 4A and the inner nozzle 4B. However, the outer nozzle 4A and the inner nozzle 4B have different positions in the circumferential direction of the substrate. It can communicate with only one nozzle 4.

  Further, a coil spring 22 which is compressed with a space from the protrusion 19 is disposed on the outer periphery of the protrusion 19 so that both ends thereof are pressed against the fixing plate 12 and the nozzle switching plate 14. The nozzle switching plate 14 is pressed against the substrate 3 by the coil spring 22 to prevent liquid or gas from leaking from the port 21.

  As shown in detail in FIG. 1, an origin sensor 23 for detecting the origin positions of the fixed plate 12 and the nozzle switching plate 14 is disposed at the lower end of the substrate 3. On the other hand, a detection object 24 detected by the origin sensor 23 is disposed on the fixed plate 12. Then, the origin sensor 23 detects the detected object 24 so that the positions of the fixed plate 12 and the nozzle switching plate 14 are detected.

  As shown in FIG. 2, the origin sensor 23 is connected to a control means 25 such as a CPU that controls the valve device 1 and the motor pump 30.

  Next, the operation of the present embodiment having the above-described configuration will be described.

  First, the origin sensor 23 detects the detected object 24 based on a control signal from the control means 25 and detects the positions of the fixed plate 12 and the nozzle switching plate 14 from the origin, that is, the rotation angle. Then, when the nozzle 4 to be communicated with the suction side flow path 32 is set, the fixed plate 12 and the nozzle are driven until the stepping motor 11 is driven by a predetermined number of steps until the desired nozzle 4 and the port 21 face each other. The switching plate 14 is rotated. At this time, the suction side channel 32 is twisted, but there is no problem because the suction side channel 32 is formed of a twistable material.

  When the desired nozzle 4 and the port 21 face each other, the driving of the stepping motor 11 is stopped, and then the motor pump 30 is driven so that the fluid flows from the discharge side pipe 31 to the suction side flow path 32 of the motor pump 30. (Liquid or gas) is supplied. Then, since the suction side flow path 32 communicates with the specific nozzle 4 via the flow path 20 and the port 21 of the projection 19 of the nozzle switching plate 14, fluid is supplied to the nozzle 4. Thereafter, the fluid is supplied from the nozzle 4 to a specific container (not shown) through a corresponding discharge side channel.

  In this way, when a predetermined amount of fluid is supplied from a specific nozzle 4 to a specific container (not shown) via a corresponding discharge side flow path, the driving of the motor pump 30 is stopped and specified. Next, the stepping motor 11 is again driven by a predetermined number of steps so that the desired nozzle 4 to which the fluid is to be supplied faces the port 21.

  In this way, fluid can be sequentially supplied to a plurality of containers.

  As described above, according to the valve device 1 of the present embodiment, a plurality of nozzles 4 are arranged on the circumference of the substrate 3 over two rows. The distance by which the fixed plate 12 and the nozzle switching plate 14 are rotated so that the nozzle 4 faces the port 21 is small, and the desired nozzle 4 can easily face the port 21 in a short time. Furthermore, a large number of nozzles can be provided by arranging a plurality of nozzles in the circumferential direction.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, a plurality of cartridges each enclosing a granular scent element are prepared so that each scent element is different for each cartridge, and each cartridge is connected to each discharge-side flow path connected to each nozzle 4. The stepping motor 11 is driven until the suction side flow path 32 communicates with one of the nozzles 4 corresponding to the above, and a solvent that melts the scent element is injected from the motor pump 30 into the cartridge through the nozzle 4 and the discharge side flow path. By doing so, a scented liquid is formed in the cartridge. Therefore, different scented liquids can be formed by sequentially causing the cartridges for injecting the solvent to face the suction side flow path 32.

The perspective view which shows embodiment of the valve apparatus which concerns on this invention 1 is a longitudinal sectional view of FIG. 1 is a perspective view from another direction. 1 is a perspective view showing a motor pump for supplying fluid to the valve device of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve apparatus 2 Base 3 Board | substrate 4,4A, 4B Nozzle 6 Holding plate 9 Drive shaft 10 Deceleration mechanism 11 Stepping motor 11A Output shaft 12 Fixing plate 14 Nozzle switching plate 19 Protrusion 20 Flow path 21 Port 22 Coil spring 23 Origin sensor 24 Object 25 Control means 30 Motor pump 31 Discharge side pipe 32 Suction side flow path

Claims (4)

In a valve device having one suction side flow path and a plurality of discharge side flow paths selectively communicated with the suction side flow path,
A plurality of nozzles penetrating the substrate so as to be arranged in the circumferential direction of the substrate so as to correspond to any of the plurality of discharge-side flow paths;
A rotatable nozzle switching plate that is in pressure contact with the back surface of the surface on which the nozzle of the substrate protrudes and selectively covers the opening of each nozzle formed on the substrate, and is in communication with the suction side flow path;
A valve device comprising: drive means for rotationally driving the nozzle switching plate so that the suction side flow path communicates with the specific discharge side flow path. 2. The valve according to claim 1, wherein the plurality of nozzles are formed in a plurality of rows at intervals in the radial direction of the substrate, and the nozzles in each row are displaced from each other in the circumferential direction. apparatus. The valve device according to claim 1, wherein the nozzle switching plate is pressed against the substrate by an elastic member. The valve device according to any one of claims 1 to 3, wherein the driving unit includes a stepping motor and a speed reducer that decelerates the driving of the stepping motor.

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