JPH07117168B2 - Flow control valve with a shell type sliding valve head - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention internally mounts a shell type sliding valve head capable of rectifying irrespective of the kind of fluid, without causing turbulent flow and vibration in the flow in the valve pipe. The normal valve has a fluid resistance that is reduced as much as possible, and by turning the adjusting ring from outside the pipe, the valve can be opened and closed.Unlike conventional valves, this valve has an external handle and handle. There is no protrusion like that, and the outside of the valve is an adjustment ring, and the vernier scale engraved on the adjustment ring and cylinder allows the opening of the valve to be read exactly in accordance with the scale. Therefore, if not only the reproducibility of the flow rate but also the pressure immediately before the valve is known, if the relationship between the opening and the flow rate is created in advance as a table, that flow rate can be read on the vernier scale without using a flow meter. Can be found at. Further, since the scale can be set to be a minute scale, it is possible to make a fine adjustment with this one valve.

In a piping system, if the flow rate is throttled by a valve, the pressure in the piping in front of the valve rises. Therefore, a relief valve is required at a place where the pressure needs to be made constant or in a pressure piping system which is desired to be placed within a safe pressure. This device has extremely low resistance in the pipe of the fluid, and the relief pressure can be set easily and accurately outside the pipe. Further, in the manufacturing, having the same structure as the flow rate adjusting valve can reduce the manufacturing cost, which is advantageous in manufacturing.

[0003]

2. Description of the Related Art Currently, many valves used are
When the valve seat or valve or valve is opened, the flow direction is greatly changed during the throttling process of the valve, causing a large vortex flow behind the valve, increasing the valve resistance, and in-pipe equipment after the valve. On the other hand, it is difficult to judge the flow rate from the position of the handle that has various adverse effects and adjusts the flow rate, or the reproducibility of the flow rate cannot be said to be easy. You must use a valve for fine adjustment using the circuit. It is difficult to open the circuit and make fine adjustments with a single valve.

Current safety valves, relief valves, etc.
In the pressure regulating valve, the pipes are mounted in parallel from the position of the pressure inlet and the outlet on the mounting means.
In the present situation, it is impossible to adjust the pressure setting from the outside of the pipe in a valve having a straight flow or being bent at an angle of 0 °. Therefore, the mounting pipe is also complicated.

[0005]

As described in detail in the section of the prior art, the fact that the flow rate and pressure can be set accurately from outside the pipe without changing the flow direction of the fluid is This is an important issue along with reducing the resistance in the tube. Furthermore, the flow in the pipe usually flows with spiral vortices,
It is necessary to rectify as much as possible to reduce the resistance inside the tube.

[0006]

A cylinder 2 is formed by cutting a precision screw portion 12 on the outer side of one end with a cylindrical tube, and a valve seat 3 having a pipe mounting screw 14 on the other end via a packing 13. Since the leakage prevention and the shell type sliding valve head can be installed inside the cylinder, the internal screw is easy to disassemble.
The shell-shaped valve head 4, the support wing 11 and the sliding pipe 30 are integrated on the inner surface cut in this way, and it has sufficient rigidity so that the valve seat and the valve head can be closely adhered to each other easily. The structure is provided with a margin L that can reciprocate on the inner surface of the cylinder. In this way, the fluid passing through the valve seat follows the streamline of the shell type valve head,
It is rectified by the support wing 11 through the arrow 17 and the arrow 29
To move to the next piping system, in order to move this shell type sliding valve head with the outer adjusting ring 1, the cylinder has a long hole 20,
There is an integer number, and there is a screw 24 in the sliding tube 30 of the shell type sliding valve head corresponding to this, and the sliding piece 8 is inserted from the outside of the cylinder 2 and fixed with the mounting bolts 10. The head is movable in only the longitudinal direction with respect to the cylinder, and there are two O-rings 16 on the inner surface of the cylinder. The shell type sliding valve head and the cylinder are completely sealed and there is no leakage. The adjusting ring 1 is such that the guide ring 7 divided into the inner surface is housed in the sliding groove 18 and then inserted from the precision screw 12 side of the cylinder to engage the screws with each other, and the hole 19 in the knob portion of the adjusting ring 1 is inserted. Using the above, the bolt is attached to the screw hole 22 of the sliding piece, and the knob portion of the adjusting ring 1 is turned by such a means, so that the graduation 26 on the cylinder becomes 0 point. By turning the adjusting ring until the zero point of the scale marked on the end of the adjusting ring is aligned, the valve head comes into close contact with the valve seat and shuts off the flow of fluid. From here, the valve is tightened in the opening direction. By turning the knob 28 in the opposite direction to the time, it is possible to obtain a precise valve opening for each scale on the scale engraved on the adjusting ring.

The relief valve must be a valve capable of precise set pressure when the pressure in the pipe is required to be safe for the equipment of the pipe system or a constant design pressure is always required. In addition, a spring force capable of setting a desired pressure must be applied to the valve head so as to correspond to the pre-valve pressure. Therefore, in the case of the present invention, the valve head of the shell type sliding valve head is divided into A spring chamber is provided and a predetermined spring is installed therein, whereby the adjustment ring 1 adjusts the expansion and contraction of the spring and sets the required pressure, that is, the contact pressure between the valve seat and the valve head is set to the outside. By using the vernier scale and the pressure setting scale, the flow rate adjustment valve can be used as a relief valve.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to an embodiment, FIG. 1 is a vertical sectional view of a flow rate adjusting valve. In FIG. Bullet type sliding valve head with conical head and streamlined, 1
1. Is a supporting wing, and the cross section becomes a thick symmetric wing type, and the sliding tube 30. And shell type valve head 4. It has an integrated structure that firmly connects the and. There are an integral number of support blades in a radial pattern, and there is a sufficient space between the support blades to play the role of fluid passage and rectification, and the valve head is supported by a rigid structure to prevent pulsation and vibration. Extremely strong. Figure 4. Figure 2 shows a perspective view of a shell-type sliding valve head, the outer peripheral surface of which has been ground and the cylinder 2. It is slidably stored on the inner peripheral surface of the. The two screw holes on the outer circumference are
Sliding piece 8. It's already open so that I can assemble. Is a sliding piece 8. Shows the situation where is placed on the hole. 22.23.
Is a sliding piece 8. Use the mounting bolt holes for the bolt 10. The bolt 9. Is a guide ring 7.
Shows a longer bolt for mounting through. Figure 1.
Return to 3. 13. has a valve seat and is integrated with the pipe screw of the pipe joint into the cylinder by screwing. Is a leakproof packing. The shell-type sliding valve head has a valve seat 3. After inserting the valve seat from the state where the The two O-rings to be installed are previously loaded in the groove on the inner surface of the cylinder. In the figure, this figure is a partial perspective view of the cylinder, which has a long hole 20. The situation is limited by an integer number. The long hole has a width such that it can slide on the sliding piece without backlash, and the lengthwise direction is increased by the amount of movement of the sliding piece. Sliding piece in this state 8. Is inserted into this long hole, and the inner sliding tube 30. Bolt holes 24. To the bolt 10. Installed with this, shell type sliding valve head 4. Does not rotate, but moves only in the cylinder axis direction. Adjustment ring 1. Guide ring 7. Is the adjustment ring 1. The sliding groove 18 in the partial perspective view of FIG.
The interior of divided guide ring 7 of 2. Inserted from the side of the precision feed screw, and slide piece 8. Screw holes 22.
Peep hole 19. Using one, one sliding piece, one bolt 9. Tighten. Adjustment ring 1. If the precision feed screw is turned, the rotational force will be 7. The sliding piece is fixed by sliding. Along the oblong hole, shell-shaped sliding valve head 4. Is pressed against the valve seat side and the valve head comes into close contact with the valve seat and closes. At that time, the adjustment ring 1. The vernier scale of
It goes without saying that it will be 0 points. Figure 1. [Fig. 6] is a view showing a closed state of the valve. Figure 2. Shows a state in which the valve is opened in a vertical sectional view of the flow rate adjusting valve. L represents the amount of movement of the shell type sliding valve head. Arrow 17. Is the fluid flow path, where
Figure 1. Return to and lock nut 5. Adjustment ring 1. Used to set the opening to prevent slack. Is a lock nut for preventing falling. Figure 3. An external view of the flow rate adjusting valve. In the example shown, the knob portion 28. Is provided. Scale 26. Is engraved on the cylinder, and the adjustment ring 1. One rotation is marked like one scale, and the adjustment ring 1. Of the scale 27. Is engraved with graduated circles. If 1 revolution is marked as 1 scale for each 1/100, in order to feed 1 pitch of the precision feed screw of the cylinder, the scale of the adjustment ring shows at 1/100 of that 1 pitch, so open the valve. The degree can be read with extremely high accuracy. Here, FIG. The figure shows the position of the vernier scale indicating the open state of the valve. The above embodiment has been described with respect to the manual operation.
Of course it is possible. Figure 8. This is shown in.

An example diagram will be described. Relief valve device used as relief valve FIG. In the above, the difference from the flow control valve is the shell type sliding valve head 4. The valve head is divided into the crown 31. 3. A spring chamber is provided inside, and a shell type sliding valve head 4. Of the spring 32. Stores and forms a valve head that can expand and contract. 33. The holes are for pressure relief and prevent the rise of internal pressure. The amount of expansion and contraction is represented by the width B.
Figure 9. The state is a closed state in which the valve is pressed against the valve seat by the spring. Arrow 34. The valve opens when the fluid pressure in 1 exceeds the spring pressure. The set pressure is high when the scale of is close to the O point, and the set pressure is low when the scale is separated. The scale can be used as a pressure setting scale and is used as a relief valve device.

[0010]

EFFECTS OF THE INVENTION Since the flow control valve of the present invention has a sufficiently rigid cylinder, it can be easily piped like other screwed straight pipe joints, and various types of fluids can be used, regardless of whether they are gas or liquid. It can be made of material. As described above, the fluid does not greatly change the flow direction, but along the streamline of the shell-type valve head, and the cylinder chamber in which the shell-type sliding valve head moves is wide. The flow resistance is low, and the supporting vanes have a streamline cross section for easy rectification. Depending on the material, the integral structure of the shell type sliding valve head can be molded and cast, or resin molded,
Precision processing is also easy. Therefore, since the adjustment tube and the feed screw can be precisely machined, the scale of the adjusting ring can accurately represent the valve seat and the opening degree of the valve, and thus the minute flow rate can be adjusted.

In the present invention, most of the important parts other than the flow regulating valve, the relief valve of the present apparatus, and the valve head top are
It can be manufactured with common parts and the manufacturing unit price can be reduced. Moreover, the pressure control is extremely precise, the handling is simple, and it can be easily used for controlling various fluid conduits.

[0012]

[Brief description of drawings]

[Fig. 1] Vertical sectional view of flow rate control valve Closed state diagram

[Fig. 2] Vertical sectional view of the flow control valve Opening state diagram

[Fig. 3] Appearance diagram of flow control valve Opening state diagram

FIG. 4 is a perspective view of a shell type sliding valve head.

FIG. 5 is a partial perspective view of a cylinder.

FIG. 6 is a partial perspective view of an adjusting ring.

FIG. 7 is a perspective view of a guide ring.

[Figure 8] Mounting state diagram by motor

FIG. 9 is a vertical sectional view of the relief valve.

[Explanation of symbols]

 1. Adjustment ring 2. Cylinder 3. Valve seat 4. Bullet type valve head It is also used as a general term for an integral structure such as a bullet type sliding valve head. 5. Lock nut 6. Lock nut to prevent falling 7. Guide ring 8. Sliding piece 9. Guide ring mounting bolt 10. Sliding piece mounting bolt 11. Support wings 12. Precision feed screw 13. Packing 14. Pipe and pipe screws 15. Pipe mounting, pipe screw 16. O-ring 18. Adjusting ring sliding groove 19. Adjustment ring peep hole 20. Cylinder slot 21. Guide ring mounting bolt through hole 22. Guide ring mounting bolt through hole for sliding piece 23. Sliding piece mounting bolt through hole 24. Sliding piece mounting tap screw hole on cylinder 25. State with sliding piece on cylinder 30. Outside of shell type sliding valve head, sliding pipe 31. Head 32. spring

Claims (2)

[Claims] 1. A flow control valve according to the present invention, wherein a shell type valve head, a support vane and a sliding tube form a shell type sliding valve head having an integrated structure, which is housed in a cylinder and is provided at one end of the cylinder. When the valve seat is fitted and the shell-shaped sliding valve head is in close contact with the valve seat from the closed to the opening, the adjustment screw is turned to feed screw and slide. By precisely reciprocating the shell-type sliding valve head through the groove, guide ring and sliding piece, the opening between the valve seat and valve head can be adjusted by the vernier scale engraved on the adjustment ring and cylinder. , The amount of movement is arranged so that it can be read accurately in accordance with the opening of the valve, and without diverting the flow of the fluid in the pipe, along the streamline of the shell type valve head, it is rectified by the supporting vanes and Invention of a flow rate control valve that allows passage of water. 2. A vernier scale using an adjusting ring and a cylinder, wherein the shell-type sliding valve head has a shell-shaped valve head that is divided from the crown and a spring is installed inside the shell to form the valve head. The relief valve device allows the relief pressure of the relief valve to be freely set from outside the pipe by turning the adjustment ring.