KR102369516B1 - Diaphragm vlave having discrete type seat member - Google Patents

Abstract

The present invention, the valve body 110 in which the flow rate corresponding to the corrosive gas or corrosive liquid flows on one side, and the seat 120 coupled to the seat 121 and the seat holder 122 to prevent valve leakage, The diaphragm seat 130 for controlling the flow rate by opening and closing the discharge path 115 of the valve body 110, the pressing unit 140 for elastically compressing or spaced apart from the diaphragm seat 130, and the stem 142 A bonnet 150 for guiding the elevation, a handle 160 having a stem 142 fixedly coupled to the lower end and having a key hole 161 penetrating in the center, a lower end coupled to the upper end of the bonnet 150, and a handle 160 at the upper end ) inserted inside the first knob 170 having an internal gear 171 formed on the inner surface thereof, and a key lock part ( 180) and the keyhole 161 and pressurizing the rear end of the stopper 182 to rotate the stopper 182 so that the stopper 182 is spaced apart from the internal gear 171 of the first knob 170, so that the handle ( 160), including the master key 190, which enables the rotation, the seat 121 and the seat holder 122 are configured to be coupled to each other in a detachable manner, and compared to the conventional integrated structure, the seat 121 in a detachable manner. Disclosed is a diaphragm valve having a detachable seat portion that can replace only the seat 121 when replacing parts due to damage of

Description

Diaphragm valve with separable seat part {DIAPHRAGM VLAVE HAVING DISCRETE TYPE SEAT MEMBER}

The present invention relates to a diaphragm valve having a separable seat part, in which a seat and a seat holder are configured to be coupled to each other in a separable type, and the replacement cost can be reduced by replacing only the seat when replacing parts due to damage to the seat in a separable manner.

As is well known, in the case of a diaphragm valve that is currently commercially available, it is widely used in processes requiring dust protection in the semiconductor, display, or chemical industries.

However, when flowing corrosive fluids and gases, a dead zone is formed due to a vortex phenomenon, which does not show a smooth flow, thereby reducing the flow rate and corroding the diaphragm valve in the stagnant section, thereby reducing the lifespan.

On the other hand, as a prior art related thereto, Korean Patent Registration No. 10-1266301 is disclosed. In the conventional device for preventing handle loosening of a diaphragm valve, when the valve of the diaphragm valve is opened, the locking pin embedded in the handle is of the spring. It is locked firmly by being caught in the valve opening and fixing hole of the locking bracket by the elastic force, and when the valve is closed, the locking pin embedded in the handle is caught and locked in the valve closing fixing hole of the locking bracket by the elastic force of the spring, Although it prevents the handle from being released in the valve open state or the valve closed state, there is a problem in that it is a device for simply removing the handle and does not play a role in preventing arbitrary manipulation of the valve.

In addition, in the locking diaphragm valve of Korean Patent No. 10-1708756, the locking state of the handle part is selectively restrained depending on whether the locking pin is inserted, thereby improving the safety of the product. It is a valve that can be operated easily by anyone with a structure that can be operated, and there is a problem that it cannot be locked when the flow rate is adjusted.

In addition, the ball valve having a key lock handle for flow control of Korean Patent Publication No. 10-2017-0077089 has a fluid inlet passage, a fluid outlet passage, a body in which a recessed portion opened through the upper body is installed, and the circumference of the fluid inlet passage formed in the body A thin elastically deformable diaphragm that opens and closes the fluid inflow passage by being pressed and spaced apart from the seat and the seat disposed at the edge, a press adapter that holds the outer peripheral edge of the diaphragm between the concave bottom surface of the body, and the diaphragm that presses the center of the diaphragm Although it is possible to increase the airtightness of the valve by providing a vertical movement means for vertically moving the press and the diaphragm press, there is a limitation in that a dead zone occurs.

Therefore, there is a need for a technology that can increase the flow rate, guide it to flow smoothly without remaining in the valve internal space, minimize the size of the dead zone to suppress the occurrence of vortex, and increase the replacement cycle of the consumable seat part to improve durability. do.

Korean Patent Publication No. 10-1266301 (diaphragm valve handle loosening prevention device, 2013.05.22) Korean Patent Publication No. 10-1708756 (Locking type diaphragm valve, 2017.02.21) Korean Patent Publication No. 10-2017-0077089 (Ball valve with key lock handle for flow control, 2017.06.19)

The technical task to be achieved by the spirit of the present invention is to increase the flow rate, guide it to flow smoothly without remaining in the valve inner space, minimize the size of the dead zone to suppress the vortex phenomenon, and increase the replacement cycle of the consumable seat part. An object of the present invention is to provide a diaphragm valve having a separable seat portion, which can improve durability.

In order to achieve the above object, the present invention, an inlet formed on one side so that a flow rate corresponding to a corrosive gas or corrosive liquid flows in a first horizontal direction, and an outlet formed on the other side such that a flow rate is discharged in a second horizontal direction, A valve body, comprising: an inflow path formed in a vertical direction from the inlet to the inner region of the intermittent space formed at the upper center of the intermittent space; A sheet having a first communication hole formed in the center to communicate with the discharge path and through which a flow rate passes, a coupling hole is formed in the center to hold the sheet, and second communication holes are equally spaced on the circumference to correspond to the inflow path. Consisting of a seat holder arranged in a sheet portion; a disc-shaped diaphragm sheet formed on the upper end of the sheet portion inside the intermittent space and in close contact with or spaced apart from the upper end of the second communication hole to open and close the discharge path to control the flow rate; a push button in contact with the upper center of the diaphragm seat, and a stem formed on the upper end of the push button to vertically elevate and elastically compress or space the diaphragm seat by the push button; a bonnet for guiding the elevation of the stem; a handle having the stem fixedly coupled to the lower end and having a key hole in the center thereof; a first knob having a lower end coupled to the upper end of the bonnet and having an upper end retracted into the handle and having an internal gear formed on an inner surface thereof; A second knob coupled to the lower end of the handle in a cylindrical shape, a key hole is formed through, and a vertical cutout space is formed on one side thereof, and is rotatably formed in the cutout space to mesh with the internal gear of the first knob. A key lock unit comprising a stopper for intermittent rotation of the handle by coupling; and a master key inserted into the keyhole to rotate the stopper so that the stopper is spaced apart from the internal gear of the first knob to enable rotation of the handle; including, the seat and the seat holder are separated Detachable seat for adjusting the flow rate of flowing through the valve body by combining with each other to facilitate replacement, and by rotating the handle by inserting the keyhole of the master key to compress or space the diaphragm seat by the push button A diaphragm valve having a portion is provided.

Here, a screw thread is formed on the outer circumferential surface of the stem, and a screw thread is formed on the inner surface of the bonnet to correspond to the screw thread, so that the stem can be screwed up and down by rotation of the handle.

In addition, a fastening ring is extended on the lower outer peripheral surface of the bonnet, a screw thread is formed outside the intermittent space of the valve body, a coupling groove for coupling the fastening ring is formed on the upper inner surface, and the intermittent space is formed on the lower inner surface It may further include a bonnet nut having a thread corresponding to the thread of the bonnet and fastening the screw to the valve body to fix the bonnet and the valve body.

In addition, the sheet is composed of PCTFE, the seat holder is composed of a suspension, the coupling hole of the seat holder is formed in a step, and the sheet is formed in a step corresponding to the shape of the coupling hole of the sheet holder, The seat and the seat holder may be coupled to each other in a detachable manner.

In addition, the upper edge of the sheet is formed to protrude from the seat holder to a predetermined height, the outer edge of the seat holder is formed to protrude a partition to a predetermined height, and the edge of the diaphragm sheet is coupled to closely contact the partition to form a dead zone can be minimized.

In addition, the edge of the diaphragm sheet may be fixed by the partition wall and the lower edge of the bonnet to prevent leakage of corrosive gas or corrosive liquid.

In addition, the diaphragm sheet may be laminated in a double structure.

In addition, an O-ring may be formed on the outer peripheral surface of the stem in close contact with the inner surface of the bonnet.

In addition, a guide groove is formed at the lower end of the handle, and a guide is formed on an outer surface of the lower end of the first knob to correspond to the guide groove, so that the handle can rotate 180° forward and reverse.

In addition, grips may be radially and symmetrically spaced apart from the outer circumferential surface of the handle.

The master key may include a handle, a key hole of the handle, and a key having an arc-shaped cross-sectional structure inserted into the key hole of the second knob.

In addition, the front end of the push button in contact with the central region of the diaphragm sheet may be convexly formed to press the central region of the diaphragm sheet to close the first communication hole.

According to the present invention, since the seat and the seat holder are configured to be coupled to each other in a separate type, compared to the conventional one-piece structure, the replacement cost can be reduced by replacing only the sheet when replacing the parts due to damage to the sheet in a detachable type, and the flow rate is reduced. Increase and guide to flow smoothly without remaining in the intermittent space, minimize the size of the dead zone to suppress the vortex phenomenon, minimize corrosion due to stagnant fluid, and prolong product life, and rust due to corrosion This has the effect of improving the yield by reducing the causes of particle generation in semiconductor and display manufacturing lines.

1 is a perspective view of a diaphragm valve having a separable seat portion according to an embodiment of the present invention.
2 and 3 respectively show a cross-sectional structure of the diaphragm valve having the separable seat part of FIG. 1 .
4 to 6 are respectively exploded perspective views of the diaphragm valve having the detachable seat part of FIG. 1 .
7 to 9 are views showing the main components related to the key lock of the diaphragm valve having the detachable seat portion of FIG. 1 separated.
FIG. 10 is a view showing the main configuration related to the diaphragm seat of the diaphragm valve having the separable seat part of FIG. 1 separated.
11 is a plan view of a cross-sectional structure of the diaphragm valve having a separable seat portion of FIG. 1, respectively.
FIG. 12 is a partially cutaway view of the valve body of the diaphragm valve having a separable seat part of FIG. 1 .
13 is an enlarged view of the seat portion of the diaphragm valve having the separable seat portion of FIG. 1 .
14 is a comparative example of the experimental results of the size of the dead zone by the seat structure of FIG. 13 .

Hereinafter, embodiments of the present invention having the above-described characteristics will be described in more detail with reference to the accompanying drawings.

A diaphragm valve having a separable seat portion according to an embodiment of the present invention, as a whole, a valve body 110 in which a flow rate corresponding to a corrosive gas or a corrosive liquid flows on one side, and a seat 121 and a seat to prevent valve leakage The seat portion 120 coupled by the holder 122, the diaphragm seat 130 for controlling the flow rate by opening and closing the discharge path 115 of the valve body 110, and the diaphragm seat 130 are elastically compressed or A pressing part 140 to be spaced apart, a bonnet 150 for guiding the elevation of the stem 142, a handle 160 having the stem 142 fixedly coupled to the lower end and having a key hole 161 penetrating through the center thereof, and the lower end The silver bonnet 150 is coupled to the upper end of the first knob 170 and the upper end is retracted inside the handle 160 and an internal gear 171 is formed on the inner surface, and the internal gear 171 of the first knob 170 The key lock unit 180 for limiting rotation of the handle 160 by engagement, and the key lock unit 180 that is inserted into the key hole 161 to press the rear end of the stopper 182 to rotate the stopper 182 so that the stopper 182 is connected to the first knob ( 170) to be spaced apart from the internal gear 171 to enable rotation of the handle 160, including the master key 190, the seat 121 and the seat holder 122 are configured to be coupled to each other in a detachable manner. , compared to the conventional integrated structure, the main point is to replace only the seat 121 when replacing parts due to damage to the seat 121 in a detachable type.

Hereinafter, with reference to FIGS. 1 to 14 , a diaphragm valve having a separable seat portion having the above configuration will be described in detail as follows.

First, the valve body 110, as shown in FIGS. 1 to 3, an inlet 111 formed so that a flow rate corresponding to a corrosive gas or a corrosive liquid flows in a first horizontal direction on one side, and the other side An outlet 112 formed so that the flow rate is discharged in the second horizontal direction, and the inlet formed in a vertical direction by communicating with the inner region of the intermittent space 113 (see FIG. 10) formed at the upper center of the inlet 111 A flow of corrosive gas or corrosive liquid flowing through the semiconductor or display process line, composed of a furnace 114 and a discharge path 115 formed in a vertical direction in communication with the outlet 112 from the central region of the intermittent space 113 . to control the flow rate.

Next, the seat portion 120 guides the flow rate flowing into and discharged from the valve body 110 to flow smoothly without remaining in the intermittent space 113 and minimizes the size of the dead zone to prevent the occurrence of a vortex phenomenon. It is composed of a seat 121 and a seat holder 122 for preventing valve leakage to perform a role of suppressing, specifically, as shown in FIGS. 2 to 7, the discharge path ( 115) and the first communication hole (121a) arranged to communicate in the vertical direction is formed in the center, and the sheet 121 through which the flow rate passes, and the sheet 121 is introduced into the coupling hole in the center to hold the sheet 121 It is composed of a seat holder 122 in which the second communication holes 122b are formed and arranged in a vertical direction on the circumference to correspond to the inflow path 114 are arranged at equal intervals.

On the other hand, the sheet 121 is composed of PCTFE (PolyChloroTriFluoroEthylene), which is a polymer that maintains heat resistance even at 120 ° C., and the seat holder 122 is composed of a sus. 5 and 6, the coupling hole 122a of the seat holder 122 is formed with a step difference, and the sheet 121 has a coupling hole 122a shape of the seat holder 122 Formed corresponding to the step difference, the seat 121 and the seat holder 122 are configured to be coupled to each other in a separate type, compared to the conventional one-piece structure, the sheet 121 when replacing parts due to damage to the sheet 121 in a separate type ) to replace only the replacement cost can be reduced.

Next, the diaphragm sheet (diaphragm sheet) 130 is. As shown in FIGS. 10 and 13, it is formed in the form of a disk having an arc-shaped cross-sectional structure, and specifically, as shown in FIGS. 2 to 7, the upper end of the sheet portion 120 inside the intermittent space 113 as shown in FIGS. is formed in the central region to close the second communication hole (122b) in close contact with the upper end of the second communication hole (122b) or to open and close the second communication hole (122b) and spaced apart to open the discharge path (115) To adjust the flow rate passing through the valve body (110).

On the other hand, as shown in FIGS. 5 and 13 , the upper edge 121b of the sheet 121 is formed to protrude from the seat holder 122 at a predetermined height, and when the diaphragm sheet 130 is compressed, the upper edge 121b and Contact in advance to close the second communication hole 122b, the outer edge of the seat holder 122 has a partition wall 122c protruding to a predetermined height, and the edge of the diaphragm sheet 130 is on the partition wall 122c. The size of the dead zone can be minimized compared to the prior art by being coupled to be in close contact.

Accordingly, according to the comparative example of the experimental result of the size of the dead zone by the seat structure of FIG. 14 and the following [Table 1], the size of the dead zone inside the diaphragm valve is reduced and the occurrence of vortex is greatly suppressed, so that the flow coefficient (Cv) ) to realize a 10% flow rate increase and to improve durability by minimizing corrosion.

conventionally Example Deadzone size 91.13mm ² 21.74mm ² Flow coefficient (Cv) 0.3 0.33

Here, the edge of the diaphragm sheet 130 is fixed by the lower edge of the partition wall and the bonnet 150 to prevent external leakage of corrosive gas or corrosive liquid to prevent a safety accident. Similarly, since the diaphragm sheet 130 is laminated in a double structure, fatigue due to elastic compression and compression release of the diaphragm sheet 130 can be improved as compared to a single structure.

Next, the pressing part 140 is formed on the upper end of the diaphragm sheet 130 to elastically push the diaphragm sheet 130 . Specifically, as shown in FIGS. 2 to 7 , the center of the diaphragm sheet 130 . The push button 141 in contact with the upper end is formed on the upper end of the push button 141 and ascends and descends in the vertical direction to elastically press the diaphragm sheet 130 by the push button 141 to compress or separate the press state. Consists of a stem (142) to release.

Here, as shown enlarged in FIG. 13 , the front end of the push button 141 in contact with the central region of the diaphragm sheet 130 is convexly formed to press the central region of the diaphragm sheet 130 to press the push button 141 . ), the central region of the diaphragm sheet 130 may be convexly deformed to close the first communication hole 121a hermetically or watertightly.

Next, the bonnet 150 guides the elevation of the stem 142 . For example, as shown in FIGS. 2 to 7, a screw thread 142a is formed on the outer circumferential surface of the stem 142, and a screw thread 151 is formed on the inner surface of the bonnet 150 to correspond to the screw thread 142a. , the stem 142 and the bonnet 150 are screwed to each other, and the stem 142 is screw-rotated by the rotation of the handle 160 to elevate.

On the other hand, a fastening ring 152 is extended on the lower outer peripheral surface of the bonnet 150, a screw thread 116 is formed outside the intermittent space 113 of the valve body 110, and a fastening ring 152 is formed on the upper inner surface. A coupling groove 201 to be coupled is formed, and a screw thread 202 is formed on the inner surface of the lower end to correspond to the screw thread 116 of the intermittent space 113, and is screwed to the valve body 110 to be screwed into the bonnet 150 and the valve. It may further include a bonnet nut 200 for fixing the body 110 to each other.

In addition, referring to FIG. 13 , an O-ring 153 is formed on the outer circumferential surface of the stem 142 in close contact with the inner surface of the bonnet 150 , so as to block the flow rate that may flow out of the intermittent space 113 , or to be watertight

Next, the handle 160 is fixed by screwing the upper end of the stem 142 through the second knob 181 of the key lock 180 to the lower end, as shown in FIGS. 5, 6 and 9 . A key hole 161 through which the master key 190 is inserted is formed in the center of the upper surface.

Meanwhile, referring to FIGS. 6 and 11 , a guide groove 162 is formed at the lower end of the handle 160 , and a guide 172 is formed on the lower outer surface of the first knob 170 to correspond to the guide groove 162 . is formed, so that the handle 160 rotates forward and backward by 180°, thereby preventing damage to the seat 121 or the diaphragm seat 130 due to excessive rotation of the handle 160 .

In addition, referring to FIG. 1 , grips 163 having a wrinkled structure are radially and symmetrically spaced apart from each other on the outer circumferential surface of the handle 160 so that they can be rotated stably without slipping.

Next, as shown in FIGS. 2, 3, 5, 6 and 9, the first knob 170 is fixedly coupled to the upper outer peripheral surface of the bonnet 150 and the upper end is the handle 160 ) is inserted between the inner surface and the outer surface of the second knob 181 , and the internal gear 171 is arranged in a cylindrical shape on the inner surface.

That is, the bonnet 150 and the second knob 181 are fixedly coupled to each other, and the handle 160 is rotatably coupled to the outer surface of the second knob 181 , and referring to FIGS. 2, 3 and 5 , , the second knob 181 is screwed to the handle 160 and fixed to each other, so that when the handle 160 rotates, the second knob 181 and the pressing unit 140 work together to rotate.

Next, the key-lock member 180 is configured to rotate the handle 160 only when the master key 190 is used by limiting the rotation of the handle 160 , specifically, FIGS. 5 to 9 . As shown in Fig., the second knob 181 is coupled to the lower end of the handle 160 in a cylindrical shape, a key hole 181a is formed through, and a cut-out space 181b is formed in the vertical direction on one side toward the center. , is formed so as to be rotatable on the rotation shaft 182b introduced into the hole 182a through the both sides of the cutout space 181b, the front end engages with the internal gear 171 of the first knob 170 to engage the handle 160 ), a stopper 182 for intermittent rotation, a support 183 extending in both directions from one lower end of the stopper 182, coupled to the rotation shaft 182b and elastically pressing the support 183 to the stopper ( 182) is meshed with the internal gear 171 of the first knob 170 to limit the rotation of the handle 160 by the mutual engagement between the first knob 170 and the stopper 182 (torsion spring) spring) (184).

On the other hand, referring to FIGS. 3 and 8 , an inclined surface 181b-1 is formed to protrude to support the rear end of the torsion spring 184 in the inner region of both inner surfaces of the cutout space 181b, so that the torsion spring 184 is formed. It is fixed so that it returns elastically after being pressed by the key 192 of the stopper 182, and in the outer region of both inner surfaces of the cutout space 181b, the support surfaces 181b- that support both ends of the support 183, respectively. 2) is formed to protrude to limit excessive rotation of the stopper 182 by the elastic force of the torsion spring 184 .

In addition, referring to FIGS. 8 and 9 , the front end of the stopper 182 is formed to protrude into a gear shape of a single dimension corresponding to the internal gear 171 of the first knob 170 , and is stably engaged with the handle 160 . to limit the unexpected rotation of

Next, as shown in FIGS. 5, 7 and 9, the master key 190 is inserted into the key hole 161 of the handle 160 and is drawn into the key hole 181a of the key lock unit 180, so that the cutout space By pressing the rear end of the stopper 182 exposed to the keyhole 181a through the 181b, the stopper 182 is rotated about the rotation shaft 182b so that the front end of the stopper 182 is the first knob 170 . It is spaced apart from the internal gear 171 to release the meshing state between the first knob 170 and the stopper 182 to enable rotation of the handle 160 .

Specifically, referring to FIG. 7 , the master key 190 includes a handle 191 and a keyhole 161 of the handle 160 and a keyhole of the second knob 181 extending from the lower end of the handle 191 ( 181a) is composed of a key 192 having an arc-shaped cross-sectional structure of 180°, and a fixing groove 193 is formed by indenting inwardly in an arc shape of 90° at the upper end of the key 192, as shown in FIG. For reference, the keyhole 161 of the handle 160 is cut in an arc shape of 180°, which is the same size as the key 192, and the keyhole 181a of the second knob 181 is 225° larger than the key. is extended in an arc shape and cut out, and when the key 192 is rotated, the fixing groove ( 193 may be fixed to the top surface of the handle 160 .

That is, after inserting the master key 190 into the key lock 180 and rotating it, the stopper 182 is continuously pressed while being fixed to the handle 160 without being separated from the first knob 170 and the stopper 182 . By releasing the meshing state, the handle 160 can be freely rotated while the master key 190 is inserted into the key lock unit 180 .

Therefore, by the configuration of the diaphragm valve having a separable seat part as described above, the seat and the seat holder are configured to be coupled to each other in a separable type, so that, compared to the conventional integrated structure, only the seat is detachable when replacing parts due to damage to the seat. Replacement cost can be reduced by replacing the product, and it increases the flow rate, guides it to flow smoothly without remaining in the intermittent space, and minimizes the size of the dead zone to suppress the occurrence of vortex to minimize corrosion due to fluid stagnation. It is possible to extend the lifespan and improve the yield by reducing the cause of the generation of particles in the semiconductor and display manufacturing lines by improving the rust generation due to corrosion.

Configurations shown in the embodiments and drawings described in this specification are only the most preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be water and variations.

110: valve body 111: inlet
112: outlet 113: intermittent space
114: inflow path 115: discharge path
116: thread 120: seat portion
121: seat 122: seat holder
130: diaphragm sheet 140: pressing part
141: push button 142: stem
150: bonnet 151: thread
152: fastening ring 153: O-ring
160: handle 161: keyhole
162: guide groove 163: grip
170: first knob 171: internal gear
172: guide 180: key lock
181: second knob 182: stopper
183: support 184: torsion spring
190: master key 191: handle
192: key 193: fixing groove
200: bonnet nut 201: coupling groove
202: thread

Claims (13)

An inlet formed on one side so that a flow rate corresponding to a corrosive gas or corrosive liquid flows in a first horizontal direction, an outlet formed on the other side so that a flow rate is discharged in a second horizontal direction, and an internal region of an intermittent space formed at the upper end of the center from the inlet a valve body composed of an inlet in communication with a vertical direction and an outlet in communication with the outlet from the central region of the intermittent space and formed in a vertical direction;
A sheet having a first communication hole formed in the center to communicate with the discharge path and through which a flow rate passes, a coupling hole is formed in the center to hold the sheet, and second communication holes are equally spaced on the circumference to correspond to the inflow path. A seat portion consisting of a seat holder arranged in the form;
a disk-shaped diaphragm sheet formed on the upper end of the sheet portion inside the intermittent space and closely contacting or spaced apart from the upper end of the second communication hole to open and close the discharge path to control the flow rate;
a pressing part comprising a push button contacting the upper center of the diaphragm seat and a stem formed on the upper end of the push button to vertically elevate and elastically compress or space the diaphragm seat by the push button;
a bonnet for guiding the elevation of the stem;
a handle having the stem fixedly coupled to the lower end and having a key hole in the center thereof;
a first knob having a lower end coupled to the upper end of the bonnet and having an upper end inserted into the handle and having an internal gear formed on an inner side thereof;
A second knob coupled to the lower end of the handle in a cylindrical shape, having a key hole in the center, and having a cutout space formed on one side thereof in a vertical direction, is rotatably installed in the cutout space and includes the internal gear of the first knob and a key lock part coupled to engage and comprising a stopper for intermittent rotation of the handle; and
A master key inserted into the key hole to rotate the stopper so that the stopper is spaced apart from the internal gear of the first knob to enable rotation of the handle; including,
The seat and the seat holder are coupled to each other in a detachable manner to facilitate replacement, and by inserting the keyhole of the master key, the handle is rotated to press the diaphragm seat by the push button or to separate the valve body. Regulates the flow rate,
The key lock unit elastically pressurizes the support while coupled to a support each extending in both directions from the lower end of one side of the stopper, and a rotation shaft having both ends rotatably installed on both sides of the inner surface of the cut-out space, thereby closing the front end of the stopper. The diaphragm valve having a separable seat part, characterized in that it further includes a torsion spring that meshes with the internal gear of the first knob to limit rotation of the handle by mutual engagement between the first knob and the stopper.
According to claim 1,
A diaphragm having a detachable seat part, characterized in that a thread is formed on the outer circumferential surface of the stem, and a thread is formed on the inner surface of the bonnet to correspond to the screw thread, and the stem is screwed and lifted by rotation of the handle. valve.
3. The method of claim 2,
A fastening ring is extended on the outer peripheral surface of the lower end of the bonnet, and a thread is formed outside the intermittent space of the valve body,
A coupling groove to which the fastening ring is coupled is formed on the upper inner surface, and a thread is formed on the lower inner surface corresponding to the thread of the intermittent space, and the bonnet nut is screwed to the valve body to fix the bonnet and the valve body. A diaphragm valve having a separable seat portion, characterized in that it further comprises.
According to claim 1,
The sheet is composed of PCTFE, the seat holder is composed of a suspension, the coupling hole of the seat holder is formed in a step, and the sheet is formed in a step corresponding to the shape of the coupling hole of the sheet holder, and the sheet and The seat holder is a diaphragm valve having a separable seat portion, characterized in that coupled to each other in a separable type.
5. The method of claim 4,
The upper edge of the sheet is formed to protrude from the seat holder to a predetermined height, the outer edge of the seat holder has a partition wall protruded to a predetermined height, and the edge of the diaphragm sheet is coupled to closely contact the partition wall to minimize a dead zone A diaphragm valve having a separable seat portion, characterized in that.
5. The method of claim 4,
An edge of the diaphragm seat is fixed by the partition wall and the lower edge of the bonnet to prevent leakage of corrosive gas or corrosive liquid.
According to claim 1,
The diaphragm seat is a diaphragm valve having a separable seat portion, characterized in that the laminated formation in a double structure.
According to claim 1,
A diaphragm valve having a separable seat portion, characterized in that an O-ring is formed on an outer peripheral surface of the stem in close contact with the inner surface of the bonnet.
According to claim 1,
A guide groove is formed at the lower end of the handle, and a guide is formed on the outer surface of the lower end of the first knob to correspond to the guide groove, so that the handle rotates 180° forward and reverse. diaphragm valve.
10. The method of claim 9,
A diaphragm valve having a separable seat portion, characterized in that grips are radially and symmetrically spaced apart from each other on the outer circumferential surface of the handle.
According to claim 1,
The master key is a diaphragm valve having a separable seat portion, characterized in that it is composed of a handle, a key hole of the handle and a key of an arc-shaped cross-section that is inserted into the key hole of the second knob.
According to claim 1,
The master key is a diaphragm valve having a separable seat portion, characterized in that it is composed of a handle, a key hole of the handle and a key of an arc-shaped cross-section that is inserted into the key hole of the second knob.
According to claim 1,
The front end of the push button in contact with the central region of the diaphragm seat is convexly formed to press the central region of the diaphragm seat to close the first communication hole. .

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