KR20090003899U - On / off valve for fluid control that is opened and closed by compressed air - Google Patents

Abstract

The present invention relates to an on / off valve for fluid control that is opened and closed by compressed air, wherein an inlet port 102 and an outlet port 104 are formed on a straight flow path, and are formed in multiple stages on the outlet port 104 so as to have a locking step 106. A body thread 108 is formed at one end thereof and a pneumatic control unit 110 is formed at one side of the outer housing; It is formed in a straight flow path of the main body housing 100, and communicates with the pneumatic control unit 110, is formed in a streamlined shape to smooth the flow of fluid to the other side, the hollow portion 202 is opened to one side is formed A trim housing 200 in which a hermetic groove 204 is formed at a peripheral edge thereof; It is hermetically coupled to the hollow portion 202 inside the trim housing 200, the plug 320 is formed around the outer edge of one end so that the outlet 104 of the body housing 100 is controlled, the plug 320 A trim 300 having a hollow airtight guide portion 310 having one side opened inward; A buffer hole 406 is formed at one side to be hermetically coupled to the airtight guide portion 310 of the trim 300, and a male screw 402 is formed at the other side to be screwed to the outlet 104 of the body housing 100. A disk member 400 which is formed; A shock absorbing member 500 coupled between the hermetic guide part 310 and the shock absorbing hole 406 so that the opening and closing speed of the trim 300 is controlled; A seat 600 fixedly fitted to the outlet 104 side of the main body housing 100 by screwing the disk member 400 so that the plug 320 of the trim 300 contacts; It relates to a fluid control valve for opening and closing operation by compressed air comprising a.

Pneumatic, Link Means, Fluid Control, Valve.

Description

Fluid control valve opened and closed by compressed gas}

The present invention relates to an on / off valve for fluid control that is opened and closed by compressed air, and more specifically, is formed in a dual structure provided with a trim housing for excellent flow control in a horizontal flow path of a linear flow path inside a main body housing having a straight flow path. The trim coupled to the trim housing is spaced apart by the high pressure compressed air flowing in and out through the open and closed pneumatic holes formed on the outside of the main body housing to facilitate control of the flow rate in the flow path. The shock absorbing member is provided to control the opening and closing speed, so it is possible to control the flow of fluid, to reduce vibration and noise, and to prevent damage caused by air pressure during opening and closing control. The shaft coupled to one side is rotated according to the operation of the controller to control the indicator, positioner, etc. To be provided by the air pressure to be more easily used to allow fluid to be difficult to control the compressed air on-off valve for controlling the fluid-operated opening and closing.

In general, a fluid control valve is installed on a pipe for transporting a fluid and the like, and is used as a means for controlling a fluid transferred through a pipe. Looking at the structure of the conventional control valve for fluid control in detail as shown in Figs. 1 and 2, the inlet hole (13a) and the outlet hole (13b) is formed to the left and right sides are formed to the left and right, open on one side of the outer edge The main body housing 10 is provided with a pneumatic hole (16a) and a closed pneumatic hole (16b), the inlet hole (13a) and the outlet hole (13b) of the main body housing 10, the outlet hole (13b) side Opening and closing surface is formed on one side and the opening and closing operation side 20 formed to reciprocate by the high pressure compressed air pressure flowing from the opening and closing pneumatic hole (16a, 16b) and the outlet opening (13b) side opening and closing operation side One side of the (20) is made of a disk 30 is fixedly installed so as to control the flow of the fluid while the opening and closing surface is in pressure contact.

Looking at the operation relationship of the conventional control valve for fluid control, first, when opening operation, as shown in Figure 1 by injecting air pressure through the opening pneumatic hole (16a) opening and closing operation valve 20 toward the inlet hole (13a) Simultaneously with movement, the opening and closing surface 22 at the tip of the opening and closing operation side 20 is spaced apart from the disk 30 to perform the opening operation. As such, the opening and closing operation side 20 opens between the disk 30 and the fluid introduced through the inlet part 13a is transferred through the outlet hole 13b.

In addition, during the closing operation of the conventional control valve for fluid control, as shown in FIG. 2, the air pressure is injected through the closing pneumatic hole 16b, and the opening / closing operation side 20 moves to the outlet hole 13b side, and the tip thereof is closed. The opening and closing surface of the disk 30 is in pressure contact with the closing operation. In this way, the opening and closing operation 20 is closed between the disk 30 and the fluid flowing from the inlet hole (13a) is no longer transported through the outlet hole (13b) to block the flow of fluid, etc. will be.

However, such a fluid control on / off valve can not maintain excellent airtightness because the on / off operation valve 20 is pressurized in contact with the disk 30 at the time of opening and closing operation, it is not possible to maintain excellent airtightness, the closed pneumatic 16b When the injected air pressure is introduced rapidly, the opening and closing operation valve 20 impacts the outer circumference of the disk 30 and pressurizes the opening and closing of the fixed disk 30 or the opening and closing operation valve 20 in the process of contact. Problems arise that the surface is broken. Therefore, the opening / closing operation 20 and the disc 30 are not easily secured with the disk 30 due to the damage of the opening / closing operation 20 and the disc 30 due to the impact of air pressure. You have a problem that you can't control the flow clearly.

In addition, the conventional fluid control on / off valve is controlled only by the air pressure injected into the open and closed pneumatic holes 16a and 16b by simply opening and closing the reciprocating movement of the on and off operation valve 20 in the opening and closing process. 20) There is a problem that it is very difficult to finely adjust the inlet pressure of the air pressure to move, there is a problem that can not be opened and closed separately in an emergency difficult to provide air pressure.

Therefore, the present invention has been devised to solve the problems described above, and prevents damage to the components due to the inflow of compressed air due to excessive air pressure during the opening and closing operation of the fluid control valve, water hammering phenomenon It is an object of the present invention to provide a fluid control on / off valve that is opened and closed by compressed air having excellent fluid control and rigidity by providing a shock absorbing member inside the trim to prevent water shock.

In addition, the present invention is not only to operate the opening and closing operation of the fluid control valve by the air pressure of the compressed air, but also the shaft and the trim extending from the outside to the trim part is coupled by a separate link means reciprocating operation of the trim by air pressure In this case, it is possible to control the devices such as indicator and positioner, and when there is no air pressure, turn the shaft according to the user's discretion. There is another purpose to provide.

Therefore, in order to solve the object as described above, the opening and closing valve for fluid control by the compressed air of the present invention has an inlet port 102 and the outlet port 104 is formed on a straight flow path, the outlet port 104 side It is formed in a multi-stage engaging step 106 is formed, the female screw 108 is formed at one end, the main body housing 100 is formed with a pneumatic control unit 110 on one side; It is formed in a straight flow path of the main body housing 100, communicates with the pneumatic control unit 110, is formed in a streamline to smooth the flow of fluid to one side, the hollow portion 202 is opened to the other side is formed A trim housing 200 in which a hermetic groove 204 is formed at a peripheral edge thereof; It is hermetically coupled to the hollow portion 202 inside the trim housing 200, the plug 320 is formed around the outer end of the other end so that the outlet 104 of the body housing 100 is controlled, the plug 320 A trim 300 having a hollow airtight guide portion 310 with the other side opened inward; A buffer hole 406 is formed at one side to be hermetically coupled to the airtight guide portion 310 of the trim 300, and a male screw 402 is formed at the other side to be screwed to the outlet 104 of the body housing 100. A disk member 400 which is formed; A shock absorbing member 500 coupled between the hermetic guide part 310 and the shock absorbing hole 406 so that the opening and closing speed of the trim 300 is controlled; The seat 600 is tightly fitted and fixed to the outlet 104 side of the main body housing 100 by screwing the disk member 400 so that the plug 320 of the trim 300 is in contact with; do.

Here, the pneumatic control unit 110 of the main body housing 100 is in communication with the trim housing 200 closed by the compressed air to close the outlet 104 of the main body housing 100 by the trim 300 Pneumatic holes 112; An open pneumatic hole (114) formed at the other side of the closed pneumatic hole (112) and into which compressed air flows in and out so that the outlet port (104) is opened by the trim (300); It is formed to one side of the closed pneumatic hole 112, the shaft coupling hole 116 formed to be connected to the trim 300 by the external equipment is axially coupled; characterized in that the formed.

On the other hand, the trim housing 200 is formed in communication with the pneumatic control unit 110 and the hollow portion 202 opened to the other side, the inner circumference of the open hollow portion 202 of the outlet 104 side An open pneumatic indentation portion 220 formed in a concave indentation and in communication with the open pneumatic hole 114; The pneumatic indentation is formed along the inner circumference of the hollow portion 202 on one side of the open pneumatic injecting part 220, and the closed pneumatic injecting part 240 is in communication with the closed pneumatic hole 112.

And, the trim 300 is formed to be hermetically coupled to the hollow portion 202 of the trim housing 200, the buffer member coupling hole 312 is formed inward, the other side is a hollow hermetic guide portion formed by opening ( 310; A plug 320 formed around one end of the hermetic guide part 310 and formed to maintain hermeticity during fluid flow control of the outlet 104 of the main body housing 100; A link means 330 provided at the other end and connected to the shaft coupling hole 116 of the pneumatic adjustment unit 110 to control external equipment; It is formed on one side of the outer periphery of the plug 320, at least one open communication hole 340 formed so that the open pneumatic injecting portion 220 and the airtight guide portion 310; characterized in that formed.

Here, the link means 330 is a link arm 332 hinged to one side of the trim 300; A crank arm 334 hinged to the link arm 332; A coupling shaft 336 axially coupled to the crank arm 334 on one side and coupled to external equipment through a shaft coupling hole 116 on the other side; Characterized in that formed.

On the other hand, the disk member 400 is formed with a male screw 402 coupled to the female screw 108 on the other side, and protruded to be hermetically coupled to the hermetic guide part 310 of the trim 300 to one side, and has an outer circumference. An airtight protrusion 404 having a row seat groove 404 'formed therein; A buffer hole 406 formed in the hermetic protrusion 404 and formed to buffer the buffer member 500; It is formed between the male screw 402 and the airtight protrusion 404, the flow path 408 for moving the fluid; In addition, the shock absorbing member 500 may be provided as a shock absorber or a coil spring having elastic force.

The present invention is designed to prevent the damage of the components due to the inflow of compressed air due to excessive air pressure during the opening and closing operation of the fluid control valve, and to prevent the water hammering phenomenon, that is, to prevent the water shock phenomenon inside the trim member Equipped with the excellent air tightness and robustness, the fluid control has an excellent effect.

In addition, the present invention is not only the opening and closing operation of the fluid control valve is operated by the air pressure of the compressed air, but also the shaft and the trim extending from the outside to the trim part are coupled by separate link means to reciprocate the trim by the air pressure. When the control of the device, such as an indicator, positioner, etc. is possible, when there is no air pressure there is an advantage that the opening and closing adjustment is possible by manual operation by rotating the shaft according to the user's arbitrary.

With reference to the accompanying drawings an embodiment of the fluid control on and off valve operated by opening and closing the compressed air according to the present invention to achieve the effect by the above problem solving means will be described in detail.

3 is an overall perspective view of a fluid control on / off valve that is opened and closed by compressed air according to the present invention, and FIG. 4 is an exploded perspective view of the fluid control on / off valve that is opened and closed by compressed air according to the present invention, FIGS. 7 is a side cross-sectional view showing an operating state of the fluid control opening and closing valve for opening and closing by compressed air according to the present invention, Figures 8 and 9 is a plan sectional view showing an operating state of the link means according to the present invention, Figure 10 Another embodiment of the fluid control on and off valve that is opened and closed by the compressed air according to the present invention.

As shown in Figure 3 or 4, the on-off valve for fluid control opening and closing operation by the compressed air of the present invention is the main body housing 100, trim housing 200, trim 300, disk member 400, buffer The member 500, the sheet 600, etc. are comprised.

As shown in the main body housing 100, an inlet 102 is formed at one side of a straight flow path, and an outlet 104 is formed at the other side. In addition, the trim housing 200 to be described later is integrally formed on the straight flow path inside the main body housing 100. Here, the outlet 104 is formed in a plurality of stages is formed with a locking step (106) for engaging the seat 600 to be described later. Then, the female screw 108 is formed at one end of the other end of the engaging step 106 to be coupled to the disk member 400 to be described later.

On the other hand, the pneumatic control unit to open and close the outlet 104 of the above-mentioned body housing 100 in the trim housing 200 which will be described later to one side of the outer side of the main body housing 100 by pneumatic pressure ( 110 is formed. Here, the pneumatic control unit 110 is composed of a closed pneumatic hole 112, an open pneumatic hole 114, a shaft coupling hole 116.

The closed pneumatic hole 112 is formed at one side of the outer edge of the body housing 100 described above and is formed in communication with the trim housing 200 described later. Then, the trim 300 to be described later by the compressed air supplied from the outside is moved to the outlet 104 side of the body housing 100 described above is formed to close the outlet 104.

The open pneumatic 114 is formed on the other side of the above-described closed pneumatic 112, which is described later by the compressed air supplied from the outside in communication with the trim housing 200 which will be described later, similarly to the closed pneumatic 112 The outlet 300 is formed to be opened so that the trim 300 is spaced apart from the inlet 102 side of the main body housing 100.

The shaft coupling hole 116 is formed to one side of the above-described closed pneumatic hole 112, and communicates with the trim housing 200 to be described later. Here, the shaft coupling hole 116 is formed to be connected to the trim 300 to be described later is coupled to the external equipment, it is preferable that the ON / OFF function of the indicator or the control function of the positioner is formed to be controlled.

The trim housing 200 is integrally formed in communication with the above-described pneumatic control unit 110 in a straight flow path of the main body housing 100, and includes a hollow part 202, an airtight groove 204, and an open pneumatic injecting part 220. ), The closed pneumatic injection unit 240 and the like. Here, the trim housing 200 is formed in a streamlined shape so that fluid flows smoothly to one side of the inlet 102 side of the main body housing 100, and a hollow part 202 opened to the other side of the outlet 104 is formed. In addition, an airtight groove 204 is formed to which a sealing ring (not shown) is coupled so as to require airtightness when the trim 300 to be described later is coupled to the inner circumference of the hollow part 202.

On the other hand, the open pneumatic injecting part 220 is formed in the recess around the inner circumference of the hollow portion 202 opened toward the outlet 104 side of the body housing 100, it is formed in communication with the aforementioned open pneumatic hole 114 . That is, by communicating with the open pneumatic hole 114 of the pneumatic control unit 110 of the above-mentioned main body housing 100 is formed in the concave, a space in which compressed air can be introduced and discharged by the annular concave portion is formed. . Therefore, by communicating with the open pneumatic air 114 so that compressed air can flow in and out, the airtight guide portion 310 to be described later through at least one open communication hole 340 formed on the outer edge of the trim 300 to be described later Communication with).

Therefore, the compressed air introduced through the open pneumatic air 114 is moved toward the open pneumatic injector 220, and the compressed air passing through the open pneumatic injector 220 is at least at the outer periphery of the trim 300, which will be described later. Compressed air flows into the airtight guide portion 310 of the trim 300, which will be described later, through at least one open communication hole 340, so that the trim 300, which will be described later, in the hollow portion 202 of the trim housing 200. It is provided to be spaced apart from the inlet port 102 side of the main body housing 100.

The closed pneumatic injector 240 is formed in a recess along the inner circumferential circumference of the hollow part 202 on one side of the open pneumatic injector 220, and is in communication with the closed pneumatic hole 112. In addition, the closed pneumatic injecting portion 240 communicated to the closed pneumatic hole 112 side of the pneumatic control unit 110 of the main body housing 100 is in communication with the hollow portion 202 of the trim housing 200. . That is, the compressed air introduced through the closed pneumatic hole 112 is transferred to the closed pneumatic indentation part 240 formed in communication with the hollow part 202 of the trim housing 200 to be introduced into the hollow part 202 to be described later. The trim 300 is provided to be spaced apart from the outlet 104 side of the main body housing 100 in the hollow portion 202 of the trim housing 200.

The trim 300 is composed of an airtight guide part 310, a plug 320, a link means 330, an open communication hole 340, and the hollow part 202 inside the trim housing 200. It is hermetically coupled so that no fluid or the like flows in.

The hermetic guide part 310 is formed with a hollow inside, is formed to be opened to the other side of the hollow, the shock absorbing member coupling hole 312 is coupled to the shock absorbing member 500 to be described later on one side of the hollow.

The plug 320 is formed around one end of the other side of the airtight guide part 310 described above, and is formed to maintain airtightness during fluid flow control of the outlet 104 of the main body housing 100. ) Is in surface contact to ensure excellent airtightness.

The link means 330 is provided at the other end of the trim 300, is connected to the shaft coupling hole 116 of the pneumatic control unit 110 is provided to control the external equipment. Here, the link means 330 is hinged to one side of the trim 300, the link arm 232 is rotated at a predetermined left and right angles. And, the crank arm 334 is hinged to one side of the link arm 332 is provided so that the straight motion according to the front and rear space of the trim 300 is converted into a rotary motion. Furthermore, one side is axially coupled to the crank arm 334, the connecting shaft 336 is axially rotated by the left and right at a predetermined angle is transmitted to the rotational movement force of the crank arm 334 according to the linear movement of the link arm 332 shaft coupling hole 116 is provided to be coupled to the external equipment such as an indicator or positioner.

The open communication hole 340 is preferably formed on at least one outer peripheral surface of the trim 300. Here, the open communication hole 340 is provided in the interval of the distance that the trim 300 is spaced apart by the compressed air is provided so that the above-described open pneumatic injecting unit 220 and the above-mentioned airtight guide unit 310 is in communication. That is, as described above, the compressed air introduced through the open pneumatic hole 114 is moved to the open pneumatic injecting part 220 and has at least one open communication hole 340 formed on one surface of the outer circumference of the trim 300. Compressed air is introduced into the airtight guide portion 310 of the trim 300 so that the trim 300 is spaced apart from the inlet 102 of the body housing 100 in the hollow portion 202 of the trim housing 200. Will be.

On the other hand, the open communication hole 340 is located in the interval of the distance L1 spaced apart and buffered by the compressed air and the distance L1 spaced apart by the compressed air, as shown in Figures 4 to 5, It is preferable.

The disk member 400 is a male screw 402 is formed on the other side is screwed to the female screw 108 formed at one end of the outlet 104 of the body housing 100 described above. The airtight protrusion 404 is protruded to one side to be hermetically coupled to the airtight guide part 310 of the trim 300 described above.

Here, the sheet groove 404 ′ is formed to which the sealing ring (not shown) is coupled to the outer periphery of the hermetic protrusion 404, so that the hermetic seal of the hermetic guide part 310 of the trim 300 is maintained. In addition, the airtight protrusion 404 has a buffer hole 406 is formed so as to buffer the buffer member 500 to be described later, spaced apart from the trim 300 spaced toward the outlet 104 side of the main body housing 100 by compressed air The speed is buffered to prevent damage of the plug 320 provided at the end of the trim 300.

Meanwhile, a flow path 408 is formed between the male screw 402 and the airtight protrusion 404 so that the fluid introduced through the inlet 102 is transported to the outlet 104. Here, the flow path 408 is controlled to be opened or closed by the plug 320 of the trim 300.

The buffer member 500 is coupled between the airtight guide portion 310 and the buffer hole 406 of the trim housing 300 described above is provided to control the opening and closing speed of the trim 300, the buffer member 500 Is preferably provided with a shock absorber (Shock Absorber). Alternatively, as shown in FIG. 8, the shock absorbing member 500 may be any one of an elastic coil coil or a plate spring.

The sheet 600 is formed in a circular ring shape, and is formed to be inclined at an angle so as to be in surface contact with the plug 320 of the trim 300 described above on the inner circumferential side. Here, the seat 600 is fitted to the engaging step 106 of the main body housing 100 so that the plug 320 of the trim 300 described above is spaced by the compressed air introduced from the outside and the surface contact. The disk member 400 is tightly fixed through screwing.

The operation and effects of the fluid control on / off valves that are opened and closed by the compressed air of the present invention according to the configuration as described above will be described in detail with reference to the embodiments.

As shown in FIG. 5, the trim housing 200 is provided therein to have a main body housing 100 in communication with the pneumatic control unit 110. Thereafter, the trim 300 is inserted into the outlet 104 of the main housing 100 to be hermetically coupled to the hollow portion 202 formed in the trim housing 200. At this time, the inner circumference of the open hollow portion 202 of the trim housing 200 is fitted with a sealing ring (not shown) formed of a rubber material, a synthetic resin material or the like in the hermetic groove 204, and then trimmed. Insert 300 into the hollow portion 202.

Next, when the trim 300 is hermetically coupled to the trim housing 200, the link means 330 provided on the other side of the trim 300 is axially coupled to the shaft coupling hole 116 of the pneumatic control unit 110. The connecting shaft 336 is first coupled, and then the crank arm 334 and the link arm 332 are coupled to interlock. Thereafter, the trim 300 is hermetically coupled to the hollow portion 202 of the trim housing 200.

Next, the seat 600 having a predetermined inclined surface on the inner circumference is engaged with the locking step 106 provided with a plurality of stages formed at the outlet 104 side of the main body housing 100. Thereafter, the disk member 400 is coupled to the female screw formed on the other side of the locking step 106. Here, the airtight protrusion 404 of the disc member 400 is hermetically coupled to the airtight guide portion 310 of the trim 300, but is sealed in the seat groove 404 'formed at the outer edge of the airtight protrusion 404. Omitted) is coupled to the airtight guide portion 310 of the trim 300 is coupled to maintain the airtight state.

Meanwhile, when the airtight protrusion 404 of the disk member 400 is hermetically coupled to the airtight guide portion 310 of the trim 300, the shock absorbing member coupling hole 312 formed at one side of the inside of the airtight guide portion 310 is rolled up. As shown in FIG. 10, a shock absorbing member 500 such as a coil spring having elastic force is coupled to trim by compressed air flowing from the closed pneumatic hole 112 of the pneumatic control unit 110. The 300 is prevented from being suddenly spaced apart toward the outlet 104 and is provided to prevent the water hammer phenomenon, that is, the water hammer phenomenon. In addition, the trim 300 is coupled with the compressed air introduced from the open pneumatic hole 114 by the buffer member 500 so as to quickly open from the outlet 104.

The fluid control valve which is opened and closed by the compressed air coupled as described above is opened through the pneumatic air 114 provided in the pneumatic control unit 110 of the main body housing 100 in order to indicate an open state as shown in FIG. After the compressed air flows in through the open pneumatic inlet 220 of the trim housing 200, the compressed air is compressed into the airtight guide part 310 through at least one open communication hole 340 formed on one surface of the trim 300. Allow air to enter.

At this time, through the closed pneumatic hole 112, the air remaining in the hollow portion 202 of the trim housing 200 is sucked down to lower the pressure so that the trim 300 is in the hollow portion 202 of the trim housing 200. The inlet 102 of the main body housing 100 is spaced apart according to the pressure difference. Here, when the trim 300 is spaced apart, the outlet 104 is more effectively opened from the trim 300 by the buffer member 500 together with the pressure difference according to the inflow and intake of the compressed air.

Meanwhile, as shown in FIG. 6, compressed air is introduced through the closed pneumatic hole 112. At this time, the compressed air is introduced into the hollow portion 202 side of the trim housing 200, the closed pneumatic inlet 240 formed around the inner side of the hollow portion 202 of the trim housing 200 through the closed pneumatic hole 112 It is introduced into the hollow portion 202 of the trim housing 200 via). At the same time, through the closed pneumatic 112, the compressed air filled in the airtight guide portion 310 of the trim 300 through the open pneumatic inlet 220 through the open communication hole 340, the closed pneumatic 112 Inhaled). In this way, the compressed air flows into the closed pneumatic hole 112 and the compressed air is sucked into the open pneumatic hole 114 so that the above-described trim 300 is spaced apart according to the pressure difference at the time of opening the outlet 104. As such, the pressure in the hollow portion 202 of the trim housing 200 rises, and the pressure in the hermetic guide portion 310 of the trim 300 decreases, so that the trim 300 exits the outlet 104 of the main body housing 100. Spaced to the side.

At this time, the spaced apart from the trim 300 is rapidly spaced toward the outlet 104 of the main body housing 100 according to the inlet and suction force of the compressed air through the closed pneumatic 112 and the open pneumatic 112. Therefore, the trim 300 is quickly spaced apart when the predetermined distance L1, the predetermined distance L2 is gradually spaced apart by the buffer member 500, as shown in Figure 7, the other end of the trim 300 is formed around The surface of the plug 320 and the seat 600 coupled to the outlet 104 side of the main body housing 100 are in surface contact, and when the outlet 104 is controlled, breakage and abrasion due to impact are prevented, and the fluid is controlled even when used for a long time. It is excellent to represent a reduction in maintenance costs.

On the other hand, as shown in Figures 8 and 9, the link means 330 is coupled to one side end of the trim 300 is provided to convert the horizontal reciprocating motion of the trim 300 by the compressed air into a rotary motion . Here, the link means 330 is hinged to the link arm 332 is coupled to one side end of the trim 300 so that the horizontal reciprocating force of the trim 300 is transmitted to the crank arm 334, as described above. have. Therefore, the crank arm 334, in which the horizontal reciprocating force is transmitted by the link arm 332, is hinged to rotate the connecting shaft 336 so that the connecting shaft 336 is connected by the crank arm 334. 336 is rotated.

As such, when opening and closing the outlet 104 of the main body housing 100 according to the horizontal reciprocating motion of the trim 300 by the compressed air, the link means 330 is linked to one side end of the trim 300. The connecting shaft 336 is rotated. At this time, the external shaft such as an indicator or positioner is coupled to the connection shaft 336 to control ON / OFF of the indicator according to the rotational force of the connection shaft 336 or to control the function of the positioner. It is possible.

On the other hand, as shown in Figure 10, in addition to the shock absorber (Shock Absorber) in addition to the shock absorber to combine the coil spring having an elastic force, such as to facilitate the buffer effect, those skilled in the art of the present invention easily It is obvious that it is feasible.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, for those skilled in the art that various modifications are possible without departing from the scope of the invention, such modifications are claimed It is within the scope of the description.

3 is an overall perspective view of the on-off valve for fluid control that is opened and closed by compressed air according to the present invention.

Figure 4 is an exploded perspective view of the on-off valve for fluid control to open and close by compressed air according to the present invention.

5 to 7 is a side cross-sectional view showing an operating state of the on-off valve for opening and closing operation by the compressed air according to the present invention.

6 and 9 are a plan sectional view showing an operating state of the link means according to the present invention.

10 is another embodiment of the fluid control on and off valve for opening and closing operation by the compressed air according to the present invention.

* Description of the major symbols in the drawings *

100: main body housing 102: inlet

104: outlet 106: locking step

108: female thread 110: pneumatic control unit

112: closed pneumatic 114: open pneumatic

116: shaft coupling hole 200: trim housing

202: hollow part 204: hermetic groove

220: open pneumatic injection unit 240: closed pneumatic injection unit

300: trim 310: airtight guide part

312: buffer member coupling hole 320: plug

330: link means 332: link arm

334: crank arm 336: connecting shaft

340: open communication hole 400: disk member

402: male thread 404: airtight protrusion

404 ': seat groove 406: buffer hole

408: flow path 500: buffer member

600: sheet

Claims (7)

The inlet 102 and the outlet 104 are formed on a straight flow path, formed in multiple stages on the outlet 104 side, the locking step jaw 106 is formed so that one end of the female screw 108 is formed, pneumatically to one side A main body housing 100 in which an adjusting unit 110 is formed; It is formed in a straight flow path of the main body housing 100, communicates with the pneumatic control unit 110, is formed in a streamline to smooth the flow of fluid to one side, the hollow portion 202 is opened to the other side is formed A trim housing 200 in which a hermetic groove 204 is formed at a peripheral edge thereof; It is hermetically coupled to the hollow portion 202 inside the trim housing 200, the plug 320 is formed around the outer end of the other end so that the outlet 104 of the body housing 100 is controlled, the plug 320 A trim 300 having a hollow airtight guide portion 310 with the other side opened inward; A buffer hole 406 is formed at one side to be hermetically coupled to the airtight guide portion 310 of the trim 300, and a male screw 402 is formed at the other side to be screwed to the outlet 104 of the body housing 100. A disk member 400 which is formed; A shock absorbing member 500 coupled between the hermetic guide part 310 and the shock absorbing hole 406 so that the opening and closing speed of the trim 300 is controlled; A seat 600 which is tightly fitted and fixed to the outlet 104 side of the main body housing 100 by screwing the disk member 400 so that the plug 320 of the trim 300 contacts; Opening and closing valve for fluid control that is opened and closed by compressed air comprising a. The method of claim 1, The pneumatic control unit 110 of the main body housing 100 is in communication with the trim housing 200 is closed pneumatic air in which compressed air flows in and out to close the outlet 104 of the main body housing 100 by the trim 300 112; An open pneumatic hole (114) formed at the other side of the closed pneumatic hole (112) and into which compressed air flows in and out so that the outlet port (104) is opened by the trim (300); Opening and closing for the fluid control opening and closing operation by the compressed air, characterized in that formed; shaft coupling hole 116 is formed to one side of the closed pneumatic hole 112, the external equipment is axially coupled to be connected to the trim 300; valve. The method according to claim 1 or 2, The trim housing 200 is formed in communication with the pneumatic control unit 110 and the hollow portion 202 opened to the other side, An open pneumatic indentation part 220 formed in a recess around an inner circumference of the open hollow part 202 on the outlet 104 side and in communication with the open pneumatic hole 114; A concave indentation is formed along the inner circumference of the hollow part 202 on one side of the open pneumatic injecting part 220 and in communication with the closed pneumatic hole 112; An on / off valve for fluid control that is opened and closed by air. The method according to any one of claims 1 to 3, The trim 300 is formed to be hermetically coupled to the hollow portion 202 of the trim housing 200, A cushioning member coupling hole 312 is formed inward, and a hollow airtight guide portion 310 formed by opening the other side thereof; A plug 320 formed around one end of the hermetic guide part 310 and formed to maintain hermeticity during fluid flow control of the outlet 104 of the main body housing 100; A link means 330 provided at the other end and connected to the shaft coupling hole 116 of the pneumatic adjustment unit 110 to control external equipment; An open communication hole 340 formed at one side of the outer periphery of the plug 320 and formed so that the open pneumatic injecting part 220 and the airtight guide part 310 communicate with each other; An on / off valve for fluid control that is opened and closed by air. The method of claim 4, wherein The link means 330 includes a link arm 332 hinged to one side of the trim 300; A crank arm 334 hinged to the link arm 332; A coupling shaft 336 axially coupled to the crank arm 334 on one side and coupled to external equipment through a shaft coupling hole 116 on the other side; Opening and closing valve for fluid control that is opened and closed by the compressed air, characterized in that formed. The method of claim 1, The disk member 400 is On the other side is formed a male screw 402 coupled to the female screw 108, An airtight protrusion 404 protrudingly formed to be hermetically coupled to the airtight guide part 310 of the trim 300 to one side, and having a seat groove 404 'formed around the outer edge thereof; A buffer hole 406 formed in the hermetic protrusion 404 and formed to buffer the buffer member 500; Opening and closing valves for opening and closing operation by compressed air, characterized in that formed between the male screw (402) and the airtight protrusion (404), the flow path 408 for moving the fluid. The method of claim 1, The buffer member 500 is a fluid control opening and closing valve for opening and closing operation by the compressed air, characterized in that provided with a shock absorber (Shock Absorber).

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