JP2005024015A - Flow regulating valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To open/close a flow path and regulate flow rate for both unidirectional and bidirectional flows by providing a flow regulating valve in a conduit, at a position where a space is limited. <P>SOLUTION: The flow regulating valve comprises a tubular member 1 which comprises a packing 4 for shielding a flow path at a tip, a case member 2 which encloses the tubular member 1 to receive the packing 4 and comprises a flow path at the bottom for receiving the packing 4, and a regulation member 3 which is screwed with the case member 2. The tubular member 1 comprises a flow path hole 5 communicating with the tubular member near the packing 4, an O-ring 6 for shielding the gap with the case member 2 on the outer periphery of the tubular member 1, and position regulating projections 8 and 9. The screw of the regulating member 3 adjusts position of the projections 8 and 9 in axial direction, with a gap provided between the packing 4 and the bottom of the case member 2 for forming a flow path. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flow rate control valve capable of adjusting a flow rate in a pipeline even in a narrow space.
[0002]
[Prior art]
For the conventional flow rate adjustment in the middle of piping, a ball valve, a gate valve, a butterfly valve, a ball valve and the like are often used. These valves create an S-shaped flow path for the fluid flow, place a movable valve in the middle of the valve, and operate it to open and close the flow path and adjust the flow rate. It is a means for opening and closing the flow path and adjusting the flow rate by inserting an obstacle that partitions the flow path and operating the obstacle with almost no change. Such means inserts a valve component in the middle of the pipe, and operates a portion that protrudes from the component and changes the direction or position of the valve, thereby opening and closing the valve and adjusting the flow rate. The position changing portion includes a method of opening / closing and adjusting the opening degree by changing a valve angle by 90 degrees using a lever, and a method of adjusting a position interval between the valve seat and the valve by rotating a handle. Such means are very commonly used in flow regulation.
[0003]
However, it may be difficult to raise these levers and handles at right angles to the piping in piping where space is limited. A method often used in such a case is a method of use in which the lever and the handle are always removed and the lever and the handle are attached when necessary. However, it requires a space where the lever and handle can be operated during use.
[0004]
In addition to the valve having the above configuration, there is a means for operating the outer periphery of the pipe to adjust the flow rate. For example, like a fire-fighting water discharge nozzle, a rod-like water discharge or a diffused water discharge is possible only by a fireman rotating the tip of the nozzle (see Patent Document 1).
Moreover, there exists a thing which has a means which can adjust a flow volume by rotating an outer periphery to the faucet position of the hose following the water outlet of the shower used for a bathroom, and this water outlet (patent document 2). These means do not require a large space like the lever and the handle.
[0005]
[Patent Document 1]
JP-A-9-285561 (0037-0038)
[Patent Document 2]
JP 2001-137145 A (0008-0013)
[0006]
[Problems to be solved by the invention]
As a valve means which does not take up space, a means using an annular screw valve is conceivable. However, in the two examples described above, the flow of fluid is limited to one direction, and bidirectional flow rate adjustment is not considered. In the fire-fighting nozzle, the water pressure from one direction is taken into consideration and the valve structure using the water pressure is taken. Even in the shower outlet, when the flow path is blocked by the push button of the shower unit, the screwing valve near the faucet is blocked by the reverse pressure.
Instead of these one-way type valves, an object is to be a compact valve that can be opened and closed with respect to the flow from both directions and the flow rate can be adjusted.
[0007]
[Means for Solving the Problems]
The present invention includes a tubular member having a flow path blocking packing at the tip, a case member having a flow path at the bottom surrounding the tubular member and receiving the packing, and an adjustment member screwed into the case member. A valve for adjusting the flow rate in the pipe line, and the tubular member includes a passage hole communicating with the tubular member in the vicinity of the packing, a gap blocking O-ring between the case member and a position adjusting projection. A flow rate adjusting valve that forms a flow path by adjusting the position of the protrusion in the axial direction with a screw of the adjusting member and providing a gap between the packing and the bottom of the case member. With the structure of the present invention, the required space is minimized, and an opening / closing operation and a flow rate adjustment are possible for a bidirectional flow.
[0008]
In the flow rate adjusting valve, it is preferable that the distal end portion and the tubular portion of the tubular member are composed of two parts, and these are fixed with a knock pin so that each part can be easily manufactured.
Also, the distal end portion of the tubular member is extended, an O-ring is provided on the outer periphery in the vicinity of the distal end portion, and a cylindrical flow path member that is in contact with the O-ring on the inner surface is provided. When the inner surface of the member is screwed, a change in the length of the valve in the flow path direction due to the screwing can be absorbed, which is preferable.
[0009]
Further, the distal end portion of the tubular member has a conical shape, the inner surface of the bottom portion of the case member that receives the packing at the distal end portion is also shaped to match the conical shape, and the tubular member is formed in the conical portion that continues in the hem direction of the conical packing. If a channel hole leading to the inside is provided, the channel becomes smooth and is suitable for a highly viscous body.
If the part of the case member that receives the packing protrudes in an annular shape, the shielding performance when the valve is closed is good.
The bottom of the case member is provided with one or more flow passage holes that remove the center and communicate with the outside. The tubular member has an annular packing corresponding to the hole provided in the bottom and a tubular portion in the center. It is preferable to provide a channel hole leading to the inside of the member because the valve resistance is approximately approximated to a bidirectional flow.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described with reference to the drawings. FIG. 1 is an example showing the basic configuration of the present invention. FIG. 1 shows a case where there are flow paths on the left and right of the drawing. There is no particular problem even if the flow path is placed up and down. The components are composed of a tubular member 1, a case member 2, and an adjustment member 3. The tubular member 1 is a tubular body having a bottom on one side of a cylinder, and a disc-shaped packing 4 is attached to a portion corresponding to the outside of the bottom. The case member 2 that surrounds the tubular member 1 and has a bottom facing the packing 4 has a channel hole that communicates with the outside having a diameter smaller than the diameter of the packing 4 at the center of the bottom. The bottom part of the case member 2 abuts on the outer periphery of the packing 4 in a ring shape to form a valve part. A channel hole 5 is formed which is slightly away from the tip (bottom portion) of the tubular member 1 and communicates with the tubular channel. The flow path hole 5 may be arranged at one place or a plurality of places as long as it is a tube surface of the tubular member 1, but can be variously set according to the viscosity of the fluid passing through the flow path. When the viscosity of the fluid is large, it is preferable that the number of flow path holes 5 is about two and the hole diameter is increased.
[0011]
A groove equipped with an O-ring 6 is provided on the outer periphery of the tubular member on the opposite side of the tip portion across the flow path hole 5 of the tubular member 1. By this O-ring 6, the outer periphery of the tubular member 1 and the inner periphery of the case member 2 are closed, and fluid does not leak to the outside. A plurality of O-rings may be used.
The adjustment member 3 performs the function of shifting the axial positions of the case member 2 and the tubular member 1. The adjusting member 3 is screwed by a screwing portion 7 provided on the outer periphery of one end of the case member 2. On the other hand, since the adjustment member 3 requires a function of moving the tubular member 1 to the left and right in the drawing, a projection 8 is provided on the outer periphery of the tubular member 1. The protrusion 8 can move the tubular member 1 to the left in the figure by the inner protrusion of the adjusting member 3, but does not operate to the right in the figure. Therefore, the projection 9 is added to the tubular member 1 by screwing so that the tubular member can be moved to the right in the drawing. When the protrusion 9 is screwed, it is fixed when the position is determined, or when the screwing direction is reversed, the positional deviation is not caused by the rotation due to the rotation of the adjusting member 3 during the adjustment by the adjusting member 3. .
With the above configuration, a valve can be provided between the flow path (open end) 10 of the tubular member 1 and the flow path provided at the center of the bottom of the case member 2. This valve can adjust the fluid from either the left or right side of the figure. Further, the maximum diameter of the flow rate adjusting valve of the present invention is the diameter of the adjusting member 3, and it is not necessary to attach a handle, a lever, etc., so that it can be operated even in a portion where there is no space.
[0012]
FIG. 2 shows another example of the present invention. The feature in the example of FIG. 2 is that the tip of the tubular member 1 shown in FIG. 1 is divided into separate parts. In FIG. 2, it is divided into a tubular member 1 and a pipe tip 12. By separating the distal end portion of the tubular member, the projection 9 described in the example of FIG. 1 is provided in advance on the tubular member, so that it can be manufactured without being attached later. The protrusion corresponding to the protrusion 8 shown in the example of FIG. 1 is configured by using the end face of the pipe distal end portion 12 in FIG. The tubular member 1 and the pipe front end portion 12 are engaged with each other and then fixed using the knock pin 13. Other means may be used as long as they can be fixed. With such a configuration, the tubular member 1 used in FIG. 1 and the tubular member 1 used in FIG. 2 have different left and right lengths in the drawing. That is, in the example of FIG. 2, the tubular member 1 can be shortened by using the pipe distal end portion 12, which is advantageous in manufacturing, and space can be reduced in the length direction of the valve.
[0013]
In the above two examples, the length of the valve structure is changed by rotating the adjusting member 3, so that at least one of the pipes before and after the valve is a flexible pipe or an elastic pipe. Sometimes it is necessary. The present invention can be realized in yet another example that does not require flexible or stretchable piping. FIG. 3 is a flow regulating valve having flanges on both valves. Although it does not require a flange in particular, it indicates that the valve can be used even if both valves are fixed.
In the configuration, the adjustment member 3 is extended to the flow path (open end) 10 side of the tubular member 1 and a screwing 18 is provided on the inside. The target of the screwing 18 is the cylindrical flow path member 16. The cylindrical flow path member 16 is connected to the tubular member 1 by an O-ring 17 and blocks the flow path from the outside. With this configuration, when the adjustment member 3 is rotated, the tubular member 1 moves to the left and right in the figure along with the movement of the projection 9 together with the pipe distal end portion 12. 16 does not change the position, and the entire length of the flow rate adjusting valve does not change. Here, when the cylindrical flow path member 16 is initially set, it can be easily adjusted by aligning the end of the adjustment member 3 and the surface of the threaded screw portion of the cylindrical flow path member 16.
[0014]
The flow rate adjusting valve in the present invention can be changed in various shapes. The example of FIG. 4 is a partial view of the valve portion of the present invention, but in the examples of FIGS. 1 to 3, the valve portion has a flat circular shape. On the other hand, in FIG. 4, the valve portion is conical. The inner surface of the bottom of the corresponding case member 2 is also processed into a conical shape. Then, the packing 4 is mounted in the vicinity of the conical tip, and the flow path hole 5 leading to the inside of the tubular member is disposed at the conical skirt that does not cover the packing 4. The flow path hole 5 may be single or plural. Preferably, two to four are arranged at symmetrical positions. The feature of this valve shape is that the fluid resistance decreases because the flow path bends at an obtuse angle. Particularly suitable results can be obtained for fluids with high viscosity.
[0015]
The example of FIG. 5 makes the circumference | surroundings of the hole for a channel | path connected to the exterior inside the bottom part which the packing 4 of the case member 2 contact | abuts convex. Since the protruding portion 19 firmly contacts the peripheral portion of the packing 4 and the inner surface of the bottom of the case member 2, the valve can be reliably closed. The protrusion 19 is formed in an annular shape. This protrusion 19 can be applied to the conical packing of FIG. 4 and the bottom center of the case member 2 of FIG.
[0016]
FIG. 6 shows a case where the center of the bottom portion of the case member 2 is closed and the flow path 20 is provided in a portion where the center is removed. A single flow path 20 may be provided, but a plurality of flow paths 20 may be provided on the same circumference. When the cross section of the flow path is enlarged, the flow path may be about 4 to 8. Corresponding to this flow path 20, an annular packing 4 is disposed at the tip of the tubular member 1. The central portion of the annular packing 4 is provided with a flow path 21 that communicates with the tubular member. Although the cross-sectional area of the flow path can be increased as the diameter of the flow path 21 is larger, the area of the flow path 20 is increased in consideration of the fluid to be used. The ratio with the area of the path 21 may be adjusted. In the case of FIG. 6, the flow path is symmetrical to the flow path 20 at the bottom of the case member 2 and the structure in which the fluid flows in the same way from either the left or right of the figure can be taken. It becomes a safe valve.
Although the specific example of this invention was shown as mentioned above, this invention is not limited by a specific example.
[0017]
【The invention's effect】
The flow rate regulating valve according to the present invention is a flow rate regulating valve that can be installed even in a pipe portion where the surrounding space is limited, and can be used for bidirectional flow instead of unidirectional. In addition, the flow rate can be adjusted with a simple component configuration.
[Brief description of the drawings]
FIG. 1 is a half-sectional view showing an example of a flow regulating valve of the present invention.
FIG. 2 is a half-sectional view showing another example of the flow regulating valve of the present invention.
FIG. 3 is a half-sectional view showing still another example of the flow regulating valve of the present invention.
FIG. 4 is a partial view showing a configuration example in the vicinity of the valve in the flow rate adjusting valve of the present invention.
FIG. 5 is a partial view showing another configuration example near the valve in the flow rate adjusting valve of the present invention.
FIG. 6 is a partial view showing still another configuration example in the vicinity of the valve in the flow rate adjusting valve of the present invention.
[Explanation of symbols]
1. 1. Tubular member Case member 3. Adjustment member 4. Packing 5. 5. Channel hole O-ring 7 Threaded portion 8,9. Protrusion 10. Flow path (open end)
11. Giza of adjustment member 12. Pipe tip 13. Knock pin 14. O-ring 15. Flange 16. Cylindrical channel member 17. O-ring 18. Threaded portion 19. Projection 20. Channel 21. Flow path

Claims (6)

In a pipe line comprising a tubular member having a flow path blocking packing at the tip, a case member surrounding the tubular member and receiving a flow path at the bottom, and an adjustment member screwed to the case member The tubular member has a flow passage hole communicating with the tubular member in the vicinity of the packing, a gap blocking O-ring with the case member, and a position adjusting protrusion. A flow rate adjusting valve that forms a flow path by adjusting the position of the protrusion in the axial direction with a screw of an adjusting member and providing a gap between the packing and the bottom of the case member. The flow regulating valve according to claim 1, wherein the distal end portion and the tubular portion of the tubular member are composed of two parts, and these are fixed with a knock pin. Extending the tip of the tubular member, having an O-ring on the outer periphery in the vicinity of the tip, and providing a cylindrical flow path member in contact with the O-ring on the inner surface, the outer peripheral surface of the cylindrical flow path member and the adjustment member The flow regulating valve according to claim 2, wherein the inner surface is screwed. The tip of the tubular member has a conical shape, the inner surface of the bottom of the case member that receives the packing at the tip is also shaped to match the conical shape, and the conical portion that continues in the hem direction of the conical packing is placed in the tubular member. The flow regulating valve according to any one of claims 1 to 3, wherein a flow passage hole is provided. The flow rate adjusting valve according to any one of claims 1 to 3, wherein a part of a portion receiving the packing in a bottom portion of the case member protrudes in an annular shape. The bottom of the case member is provided with one or more flow passage holes that remove the center and communicate with the outside. The tubular member has an annular packing corresponding to the hole provided in the bottom and a tubular portion in the center. The flow regulating valve according to any one of claims 1 to 3, wherein a flow passage hole is provided in the member.

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