KR920006697B1 - Opening and closing valve of female fitting for pipe fitting - Google Patents

Abstract

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Description

Opening and closing valve of female fitting for pipe fitting

1 is a block diagram of an embodiment of the present invention.

2 is a schematic diagram of one embodiment of a male fitting coupled to the first embodiment.

FIG. 3 and FIG. 4 are four half cut front and plan views of the valve body of the embodiment shown in FIG. 1, respectively.

FIG. 5 and FIG. 6 are respectively cutaway front views and VI-VI arrow direction cross-sectional views of the valve holder of the embodiment shown in FIG.

FIG. 7 and FIG. 8 are a plan view and a side view of a half cut in the valve operating cylinder of the embodiment shown in FIG. 1, respectively.

9 is a plan view for explaining a related operation of the valve operating cylinder and the valve;

FIG. 10 is a cutaway side view showing the connecting state of the female fitting and the second male fitting of the first FIG.

* Explanation of symbols for main parts of the drawings

1: female fitting 2: cylinder

4: connection part 5: on / off valve

6: water bottle 7: sleeve

11 valve body 12 valve holder

13: valve operation cylinder 14: rotating shaft

15 through hole 16 pin

19: bearing hole 20: basic body

21: engagement piece 22: tapered portion

26,27: groove mechanism 28: packing

30: stop ring 31: compression spring

32: packing 50: male fitting

51: insertion tube

The present invention relates to pipe fittings of male and female fittings, and more particularly to an on / off valve embedded in a female fitting.

As the opening / closing valve of such a female fitting, for example, as described in JP 52-29310 A, when the male fitting is inserted into the connection of the female fitting in a towed state, a sleeve provided at the outer circumference of the female fitting is inserted, the tip of the male fitting is female. Abutting the end of the valve plate protruding from the disk-shaped valve body embedded in the fitting, and inserting the male fitting against the spring again, the disk-shaped valve body is opened from the valve seat (packing) installed therein so that the fluid It flows from the mold axis to the vertical axis.

At this time, the two fittings are connected by engaging the lock ball installed in the female fitting and the outer circumferential groove installed in the male fitting. On the contrary, it is widely known that when the sleeve of the female fitting is pulled out of the male fitting, the spring valve force moves forward simultaneously with the male and female valve fitting, and the tubular valve body contacts the valve seat to close the fluid. . Therefore, according to the pipe fitting of such a structure, there exists an advantage that the distribution | disconnection of the pipeline connected to two fittings can be simultaneously interrupted by the single operation of attaching and detaching a male fitting to a female fitting.

However, according to the pipe fitting described in the above publication, as described below, the pressure loss of the fluid in the on-off valve is large, and the viscosity of the fluid also acts to increase the fluid resistance, so there is a problem in that there is a limit in trying to increase the absolute flow rate.

That is, the opening / closing valve described in the above publication is configured to open and close the valve seat openings facing each other by a disk-shaped valve body that is displaced in the axial direction of the male fitting flow passage in accordance with the detachable direction of the male fitting. Since the fluid impinges on the valve body once and then flows through a curved path leading to the valve seat opening around the outer periphery of the valve body, there is a problem that the pressure loss is large. In addition, if the valve body is shaped as described above, even if the diameter of the fitting is increased, this problem is not solved.

Moreover, it is proposed by Japanese Unexamined-Japanese-Patent No. 53-30013 etc. as a pipe fitting provided with the automatic switching valve other than the said publication. However, also in the opening / closing valve shown in the said publication, since it has a structure which displaces a disk (cylindrical) valve body according to the attachment / detachment direction of a male fitting similarly to the opening-and-closing valve mentioned above, there exists a problem that the pressure loss of a fluid is large.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and in other words, to provide an on-off valve of a female fitting for a pipe fitting that can reduce the pressure loss of the on-off valve.

Another object of the present invention is to provide an on / off valve of a female fitting for a pipe fitting having a mechanism for opening and closing an on / off valve built in a female fitting in a detachable operation of a male fitting.

The female fitting of the present invention is a valve fitting in which a male fitting for manipulating a sleeve and a female fitting with a shut-off valve are detachably connected by a lock ball, wherein the rotary valve body is provided so that the rotary valve body can be retracted in the axial direction of the fitting body. An axis of rotational symmetry is provided orthogonally in the axial direction of the valve operation cylinder inside the cylinder, and the valve operation cylinder is arranged in such a way as to be elastically pushed in the direction of the end of the tube into which the male fitting is inserted and to be able to contact the insertion pupil of the male fitting. And the valve body is engaged with the valve body via a groove mechanism for converting the movement of the valve operating body, which is advanced and retracted due to the detachment of the male fitting, into the rotational movement of the valve body, and the position of the valve operating body and the valve body. The relationship is said at the time of complete retraction of the valve operation cylinder at the time of insertion of the said male fitting The through hole of the body is rotated at a position in which the fluid passage of the female fitting coincides with the axis line, and when the male fitting is detached from the female fitting, the through hole is fully expanded when the valve operating body is fully advanced. It is characterized in that it is formed to rotate in a position to block the fluid passage.

According to this invention comprised in this way, it becomes clear that the said objective is elastic by the next action | action.

When the rotary valve body is rotated so that the through hole is aligned with the axial line of the female fitting fluid passage, the fluid passages before and after the copper valve body originally blocked by the rotary valve body are interlocked linearly through the through hole. Therefore, the fluid flowing from the one end of the female fitting flows through the through hole connecting the fluid passage to the front seat, and the pressure loss due to the on / off valve is remarkably increased since the streamline reaches the rear without turbulence due to the useless fluid resistance. Becomes smaller.

In addition, when the valve body is installed and the male fitting is inserted, the valve body is interlocked and retracted. When the valve body is rotated 90 degrees through the conversion mechanism by this retraction, when the male fitting is completely connected, The through-holes of the rotary valve body completely coincide with the lateral line of the fluid passage to reach the circulation position, and are automatically opened completely. On the other hand, the valve operating cylinder that breaks off the male fitting advances by the elastic force, whereby the through hole of the rotary valve body returns to the shutoff position of the fluid passage, thereby automatically closing.

It demonstrates based on the Example of this invention hereafter.

Fig. 1 shows a configuration of one suitable embodiment of the female fitting according to the present invention with four half sections. Correspondingly to this, the construction of one embodiment of the male fitting is shown in FIG. 2 as four half-sections.

As shown in FIG. 1, the female fitting 1 has the large diameter cylinder 2 in which the opening-closing valve was accommodated, and the piping connection part 3 whose diameter is slightly smaller than the cylindrical body provided in the end of this cylinder 2. As shown in FIG. And a connecting portion 4 into which a male fitting installed at the other end of the cylinder 2 is inserted, and an opening / closing valve 5 housed inside the cylinder 2, but between the cylinder 2 and the piping connection 3 Constructs will be referred to as fittings.

The connecting portion 4 includes a water bottle 6 (受 筒) through which the insertion tube portion 51 of the male fitting 50 is detached, and a sleeve 7 slidably axially slidable on the outer circumference of the water bottle 6. It is formed. It consists portion large-diameter and small-diameter inside and outside major surface portion of the reservoir (6) is formed in the end portion (6, ^G, 6 ") at a boundary portion inside and outside major surface. The rear end of the inner diameter is robust to the front end inner surface of the cylinder (2) The fitting cylinder 51 of the male fitting 50 is detachably attached to the small diameter portion.

In addition, a plurality of holes 8 are arranged in the center of the periphery direction at appropriate intervals along the outer periphery of the distal end of the water bottle 6, and the lock ball 9 is inserted in each hole 8. The hole 8 is tapered in diameter toward the center of the tube, and the diameter of the hole 8 is accommodated therein.

The sleeve 7 is regrettable over the large diameter portion and the small diameter portion at the outer circumferential surface portion of the water bottle 6, and a cylindrical space portion formed between the large diameter portion inner circumferential surface of the sleeve 7 and the small diameter portion outer circumferential surface of the water bottle 6. The compression spring 10 is opened to the sleeve 7 to force the sleeve 7 in the barrel end direction of the water bottle 6. The sleeve 7 is in the retracted position at the first degree, in which the lockball 9 is opened so as not to protrude from the hole 8 in the direction of the barrel, and the second degree is the predetermined forward position. In this position, the locking ball 9 has a function of restraining as if it protrudes from the hole 8 in the direction of the barrel. Therefore, the inner surface of the distal end portion of the sleeve 7 has a portion 7 'whose diameter is enlarged and a surface 7 "which restrains the lock ball 19 to the maximum in accordance with the required opening amount of the lock ball 9. The amount of opening necessary here means the amount which can hold | maintain the opposite side of the lock ball 9 at least in the state which retracted from the inner peripheral surface of the water bottle 6 into the hole 8. Moreover, the groove | channel provided in the outer periphery of the front-end | tip part of the water bottle 6 The stopper 6a is inserted into the inside, and the maximum forward position of the sleeve 4 is thereby restricted.

The on-off valve 5 includes a rotary valve body 11 and a valve holder 12 rotatably supporting the valve body 11, and the valve body 11 is attached to the valve operating cylinder 13. It is to be rotated by. As shown in FIG. 3 and FIG. 4, the valve body 11 has the main body part 11a formed by extracting two surfaces in parallel with the upper and lower parts of the spherical body as a rotationally symmetric type | mold. The rotary shaft 14 is protruded symmetrically in the vertical direction at the center of the cut surface, and the through hole 15 perpendicular to the rotary shaft 14 is protruded in the main body portion 11a. The diameter of the through hole 15 is the same diameter as that of the fluid passage 53 of the male fitting 50. Moreover, the pin 16 is implanted in parallel with the rotating shaft 14 in the position which was slightly eccentric from the rotating shaft 13 which pulled out two surfaces in parallel.

The valve holder 12 has an outer circumferential diameter to be slidably fitted to the inner circumferential surface of the cylinder 2, as shown in FIG. 5 and FIG. 6, and the inner circumferential diameter is the outer diameter of the main body portion 11a of the valve body 11. It is formed in the cylindrical shape corresponding to the. Protruding to the inner peripheral surface of one end of this cylinder, the annular blade | wing 17 is formed in the axial direction. Moreover, the part 18 cut | disconnected in the cylinder wall in the axial direction is respectively provided in the position which cut out the upper and lower surfaces of the attached valve body 11, respectively. The engagement piece of the valve | bulb operation cylinder 13 mentioned later is inserted in this cut part 18. As shown in FIG.

As shown in FIG. 7 and FIG. 8, the valve operation cylinder 13 is a pair of engagement pieces 21 of plate-shaped engaging body 21 extending in parallel in the axial direction from one end of the base 20. ) Is formed. The taper portion 22 is formed by expanding the inner diameter toward the end portion corresponding to the outer diameter of the insertion cylinder portion 51 of the male fitting 50 inserted into the other end of the basic body 20, and the tapered portion 22 is formed. The outer diameter of one tip portion is reduced in diameter to a single phase in correspondence with the inner diameter of the small diameter inner circumferential surface of the water bottle 6. The diameter reducing portion 23 has a function as a retainer of the lock ball 9, and the most advanced position is regulated by the end 6 'of the water bottle 6, and the lock ball ( 9) In addition, an annular groove 24 is provided on the outer circumferential surface of the base body 20, and a protrusion 25 is provided in an annular shape at an inner circumferential position symmetrical with the groove 24. On the other hand, the parallel pair of engaging pieces 21 is formed in a symmetrical shape, and the groove mechanism 26 in the axial direction extends from the distal end of the engaging piece 21 toward the base 20. The width | variety of the groove mechanism 26 is set in the dimension which the rotation shaft 14 of the said valve body 11 can rotate. The groove mechanism 26 is provided in the groove mechanism 26 by branching at a right angle from the center portion thereof, and the width of the groove mechanism 27 is such that the pin 16 of the valve body 11 rotates or slides. It is set to possible dimensions.

The valve body 11, the valve holder 12, and the valve operation cylinder 13 formed as described above are assembled into the cylinder 2 and the water tank 6 in the state shown in FIG. 1. That is, the valve body 11 is rotationally supported by the rotation shaft 14 being inserted into the bearing hole 19 of the valve holder 12, and being rotatable. The air gap portion formed by the base 17 of the valve holder 12 and the bottom plate 2a of the cylinder 2 and the bottom plate 2a are formed by the main body portion 11a of the valve body 11. The annular packing 28 which seals the cylinder 2, the piping connection part 3, and the valve body 11 in series is provided, and the airtight of the fluid passage 29 is maintained by this, but the valve body 11 In order to ensure the airtightness with respect to the outer peripheral surface of), the tip portion is formed with a concave curved surface corresponding to the curved surface of the valve body 11, and the inner diameter of the packing 28, together with the fluid passage 29, the valve body ( It is formed with the same diameter as the through-hole 15 of 11).

On the other hand, the valve operation cylinder 13 engages the groove mechanisms 26 and 27 of the engagement piece 21 with the rotary shaft 14 and the pin 16 of the valve body 11, respectively, and cut off the valve holder 12. It is inserted in (18). The outer ring annular groove 24 of the valve operating cylinder 13 is equipped with a stop ring 30, and is provided with a compression spring 31 fitted between the stop ring 30 and the end face of the valve holder 12. The valve operation cylinder 13 is urged toward the front end direction. As a result, the valve operation cylinder 13 is extruded in the tube end direction of the water bottle 6, and the end 23 contacts the diameter reducing end 6 ′ of the water bottle 6 to regulate the most advanced position. At this time, the end 23 has reached the position toward the hole 8 in which the lock ball 9 is inserted, and pushes the lock ball 9 in the circumferential direction. By this pushed-up lock ball 9, the sleeve 7 compresses the compression spring 10 and is held at the retreat end. In addition, a cylindrical packing 32 having an inner diameter corresponding to the diameter of the fluid passage 29 is locked to the protrusion 25 on the inner surface of the valve operating cylinder 13. Like the packing 28, the packing 32 also has a concave curved surface corresponding to the curved surface of the outer circumferential surface of the valve body 11 so as to face the concave curved surface of the packing 28. When the through-hole 11 is matched with the fluid passage and the shaft center as shown in FIG. 10, the airtightness of the outer peripheral surface of the valve body 11 is perfected.

The operation of the embodiment thus constructed will be described next.

The female fitting 1 of FIG. 1 shows a state in which the male fitting 50 is detached. At this time, the valve operating cylinder 13 advances to the most advanced position due to the spring force of the compression spring 31, and the pin 16 of the valve body 11 engaged with the groove mechanism 27 of the engagement piece 21 is a valve. Since the operation cylinder 13 advances, it is in the position shown by the solid line in FIG. 9 which made the rotating shaft 14 the center of rotational motion. And the through-hole 15 of the valve body 11 is hold | maintained in the position orthogonal to the fluid passage 29. Therefore, the fluid passage 29 is blocked and the flow of the fluid supplied from the pipe connecting portion 3 side is closed by the valve body 11.

Next, the operation at the time of coupling the male fitting 50 to the female fitting 1 will be described. 10 shows this combined state. When the insertion cylinder 51 of the male fitting 50 shown in FIG. 2 is inserted into the water cylinder 6 of the female fitting 1 shown in FIG. 1, the tapered diameter enlargement part of the insertion cylinder 51 is inserted. 52 abuts on the taper part 22 of the valve operation cylinder 13. In addition, when the insertion cylinder part 51 is inserted to a predetermined position, the valve operating cylinder 13 will retreat to a predetermined position against the compression spring 31. In this way, the pin 16 of the valve body 11 rotates from the position shown by the solid line in FIG. 9 to the position shown by the dashed-dotted line. As a result, the through-hole 15 is rotated to a position where the fluid passage 29 coincides with the axis line, the opening / closing valve 5 is opened, and the blocked fluid passage 29 communicates. Therefore, the fluid supplied from the pipe connection 3 flows through the through hole 15 into the fluid passage 53 of the male fitting 50.

In this way, when the male fitting 50 is inserted to a predetermined position, the tapered groove 54 having a cross-sectional counterpart installed on the outer circumference of the insertion cylinder 51 reaches the position of the lock ball 9, and the elastic force of the compression spring 10 is achieved. By the forward action of the sleeve 7 by the lock ball 9 is pushed down inward to engage the taper 54 inside and firmly engage the male and female fittings (1, 50). In this state, the packing 32 is adjacent to the distal end of the valve body 11 and the insertion cylinder 51, and the airtightness of the fluid passage is maintained by the packing and the packing 28 provided opposite thereto.

According to the present embodiment as described above, when the male fitting 50 is inserted, the valve body 11 is rotated via the valve operating cylinder 13 which abuts on it, and the through hole 15 communicates with the fluid passage in the blocking position. Until it is rotated. As a result, since the fluid passages 29 and 53 communicate with the same axis including the through holes 15, the fluid flows without any disturbance of the streamline, and no pressure loss is generated by the on-off valve 5 at all. It will not hit.

In addition, the opening / closing operation mechanism of the opening / closing valve 5 which concerns on a present Example arrange | positions the pin 16 at the distance which eccentrically moved from the valve body 11 to the rotating shaft 14, and attaches and detaches the male fitting 50. And the groove mechanism 27 orthogonal to the engaging piece 21 of the valve operation cylinder 13 which advances and retreats in the advancing direction is branched, and the cut | disconnect groove | channel 24 engages the structure of the pin 16 in the structure. According to this embodiment, the pin 16 rotates around the rotating shaft 14 while sliding the groove mechanism 27 in accordance with the advancing / removing movement of the valve operating cylinder 13, and rotates the valve body 11 to open and close. Since the opening and closing of the valve 5 are performed, the mechanism which automatically rotates the valve body 11 can be realized by interlocking with the insertion connection of the male fitting 50 with a simple structure.

In addition, in the above embodiment, the spherical body is applied as the rotationally symmetrical body part constituting the valve body. The present invention is not limited to this, but can be realized by a cylindrical body, a truncated cone, and the like. The most preferable shape is a spherical valve body and a cylindrical valve body which are vertically symmetrical.

Further, the opening and closing mechanism of the on-off valve, in addition to those shown in the above embodiments, can also take the following configurations. That is, a mechanism in which a pinion gear is formed on a rotation shaft of the valve body and the rack engaged with the valve is connected in series with the valve operation cylinder, or a mechanism in which grooves having the same arc are provided on the valve operation cylinder side and the valve side and ball-coupled to each other. You can do

According to the present invention, since the rotary valve body rotates about an axis orthogonal to the fluid passage of the built-in open / close valve element, the fluid passage communicates in a straight line, so that the pressure loss can be significantly smaller than in the related art. As a result, the flow rate can be increased by the same fitting dimensions. In particular, since the rotary valve body is not a cause of increasing the fluid resistance at the time of opening the fluid passage, the effect when applied to a highly viscous fluid is remarkable, and there is an effect that it can be used without distinction for a gas liquid.

Moreover, there is also an effect that the rotary valve body can be opened and closed by interlocking with the insertion and removal operation of the male fitting by a valve operation cylinder having a simple configuration.

Claims (2)

In the pipe fitting which detachably connects the male fitting which operates a sleeve, and the female fitting which integrated an opening-closing valve by a lock ball, the rotary valve body 11 is a valve provided so that the axial direction of the fitting main body 50 can be moved forward and backward. The rotational symmetry axis | shaft 14 is orthogonally installed in the axial direction of the valve operation cylinder 13 in the inside of the operation cylinder 13, The valve operation cylinder 13 is a cylinder end direction in which the said male fitting 50 is inserted. The valve body is disposed so as to be able to contact the insertion cylinder portion 51 of the male fitting 50 and to move forward and retreat according to the attachment and detachment of the male fitting 50. The valve body 11 is engaged with the valve body 11 via groove mechanisms 26 and 27 that convert to rotational motion of the body 11, and the positional relationship between the valve operating cylinder 13 and the valve body 11 is the male fitting ( 50) Valve operation at insertion In the complete retraction of the sieve 13, the through hole 15 of the valve body 11 is rotated at a position in communication with the fluid passage 53 of the female fitting 1 in alignment with the axial center line. When the male fitting 50 is displaced from the female fitting 1, the through hole 15 is formed to rotate in a position to block the fluid passage 53 when the valve operating cylinder 13 is fully advanced. Opening and closing valve of female fitting for pipe fitting characterized by the above-mentioned. 2. The on-off valve of the female fitting for pipe fitting according to claim 1, wherein the inner diameter of the through hole 15 of the rotary valve body 11 is the same diameter as that of the fluid passage 53 of the female fitting 1. .

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