KR101708756B1 - lock type diaphragm valve - Google Patents

Abstract

The present invention aims to selectively control the lock status of a handle unit in accordance with whether a locking pin is inserted or not and to improve the product safety. To this end, the present invention provides a lockable diaphragm valve comprising: a body unit which comprises: an inlet into which a fluid flows; an outlet through which the fluid is discharged; and an opening/closing flow path which is placed on top sides of the inlet and the outlet, wherein the fluid is discharged in accordance with an opening/closing status thereof; an elevating sealed unit which is placed on the top side of the body unit, whose one end is combined, and which is vertically moved to selectively open and close the opening/closing flow path; a stopper unit which has a stem penetrating hole, which penetrates the elevating sealed unit, which is combined to cover the other end of the elevating sealed unit, and which has a locking groove on the top surface unit and a plurality of pressurizing holes on the outer circumferential surface; a handle unit which is placed on the top side of the stopper unit, on whose top surface unit a locking penetrating hole is formed, on whose outer circumferential surface a supporting hole is formed, and which is connected to one end to allow the elevating sealed unit to be elevated and lowered in accordance with a rotation control and to rotate in the direction of a circumference of a preset angle unit; and an elastic repulsion-type locking pin which is selectively inserted into the locking groove by penetrating the locking penetrating hole to control the rotation control of the handle unit and which is temporarily fixated on the supporting hole.

Description

A lock type diaphragm valve

The present invention relates to a lock-type diaphragm valve, and more particularly, to a lock-type diaphragm valve in which a lock state of a handle portion is selectively restricted depending on whether a locking pin is inserted, thereby improving safety of a product.

In general, a valve is installed in the middle of a pipe or in a vessel to control the flow rate and pressure of the fluid, and controls the opening of the flow path using a spring and a diaphragm installed inside the valve.

At this time, the diaphragm without a spring controls the pressure of the chamber according to the variation of the pressure, so that the diaphragm is precisely controlled, the pressure of the sealing part is dispersed, the change of the outer shape of the diaphragm is prevented, .

1 is a cross-sectional view showing a conventional diaphragm valve.

Here, the diaphragm valve 100 performs a function of controlling the flow of the fluid flowing in the pipe by the diaphragm 10 coupled with the handle portion 20. At this time, a wear portion 30 protruding upward from the inside of the pipe may be formed at the center of the body portion corresponding to the diaphragm 10.

That is, as the handle portion 20 is rotated in the locked state, the diaphragm 10 is pressed downward and abuts against the wear portion 30, thereby blocking the flow of the fluid. When the handle portion 20 is rotated in the open state, the diaphragm 10 is returned to the upper side and separated from the wear portion 30, so that the fluid flows again.

However, when the diaphragm valve 100 is installed in an environment where the diaphragm valve 100 is not fixed to a specific position but is constantly moved, a rotational force is generated in a state in which the handle portion 20 is opened by vibration or impact generated during movement, There is a problem that leakage occurs.

Further, when the handle 20 is switched to the open state due to vibration or shock or is switched to the open state due to a mistake of the operator, a safety accident due to unexpected fluid leakage may occur.

In addition, there is a problem that the bonding force between the respective components is reduced due to continuous vibration and impact, and the sealing performance is deteriorated.

Accordingly, there is an urgent need for development to improve the safety of the product by preventing switching of the open / close state caused by the rotation of the handle portion 20 due to vibration and impact.

Korean Patent No. 10-0153229

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a lock type diaphragm valve in which a locking state of a handle portion is selectively restricted depending on whether or not a locking pin is inserted, thereby improving the safety of a product.

According to an aspect of the present invention, there is provided a fluid ejecting apparatus comprising: a body having an inlet through which fluid is introduced and an outlet through which fluid is discharged, the inlet and outlet being opened and closed; A lifting / closure part disposed on the upper side of the body part and coupled to one end, the lifting / closing part being vertically moved to selectively open / close the opening / closing passage; A stopper part formed with a stem hole through which the lift seal part penetrates and coupled with the other end of the lift seal part so as to cover, a lock groove formed on the upper surface part, and a plurality of pressing holes formed on the outer circumferential surface; A lock hole is formed in the upper surface of the stopper portion, a support hole is formed in the outer circumferential surface of the stopper portion, and a handle, which is connected to one end of the lifting / part; And a elastic support type locking pin which is inserted into the lock groove through the lock through hole and is elastically fixed to the support hole while restricting rotation of the handle part by being selectively inserted into the lock groove, A pin extending through the lock through hole and selectively inserted into the lock groove; a connection extension part extending radially outward from the upper end of the lock extension part to the handle part; And a resilient extension portion extending downward to face the outer circumference and having one side corresponding to the support hole and having a radially inwardly protruding elastic pressing portion.

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The gap between the lock extension portion and the elastic pressing portion is set to be less than an interval between the lock groove and the outer periphery of the handle portion so that the elastic pressing portion is elastically inserted into the support hole when the elastic support type locking pin is locked. .

The lock hole and the lock groove are aligned with each other when the handle portion is locked. The lift seal portion includes a diaphragm for opening / closing the opening / closing passage, a sealing portion for pressing the diaphragm according to the elevation, And a plurality of elastic members elastically supported in a downward direction are preferably provided between the sealing portion and the stem portion.

The pressing hole includes a lower pressing hole in which the pressing screw is fastened to the stopper part to fix the stopper part to the body part and an upper pressing hole communicating with the supporting hole so as to fix the handle part and the lifting / desirable.

The present invention provides the following effects through the above-mentioned solution.

First, the elastic support-type locking pins penetrate through the mutually aligned lock through holes and are selectively inserted into the lock grooves, so that rotation of the handle is restrained to prevent opening of the opening / closing channel due to vibration and impact, The safety against the phenomenon can be remarkably improved.

Second, since the conventional valve according to the present invention is structured to change the structure of the handle portion and the lifting / lowering portion on the basis of the stopper portion, the conventional valve can be applied as a lock type valve in which the elastic lifting type locking pin is selectively inserted by the user, .

Third, the user can easily confirm whether the lock extension is completely inserted into the lock groove by the click feeling that the elastic pressing portion is elastically inserted into the support hole, and it is easy to confirm that the elastic support portion is locked and fixed The safety can be remarkably improved.

Fourth, since the pressing screw is pressed so as to fix the position of the stem portion and the cover body portion, the gap between the pressing portion and the cover body is minimized, and the pressing screw is coupled to the screw thread formed in the vertical direction. Therefore, inertia loosening due to vibration in the left- The stability can be remarkably improved.

1 is a sectional view of a conventional diaphragm valve;
2 is a cross-sectional view of a locking diaphragm valve according to one embodiment of the present invention.
3 is an exploded perspective view illustrating a handle portion, a stopper portion, and a spring-loaded locking pin of a lock-type diaphragm valve according to an embodiment of the present invention.
FIGS. 4A and 4B are plan views of a closed diaphragm valve according to an embodiment of the present invention; FIG.

Hereinafter, a lock type diaphragm valve according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view illustrating a lock type diaphragm valve according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a handle portion, a stopper portion, and a resiliently supporting type locking pin of a lock type diaphragm valve according to an embodiment of the present invention. And FIGS. 4A and 4B are plan views showing an open / close state of a lock-type diaphragm valve according to an embodiment of the present invention.

2 to 4B, the lock type diaphragm valve 200 according to the present invention includes a body 110, a lifting and closing part 120, a stopper part 130, a handle part 140, And a locking pin 150.

Here, the lock-type diaphragm valve 200 may be selectively opened and closed to control fluid flow in various industrial fields. At this time, the locking diaphragm valve 200 is rotated in the circumferential direction so that the handle 140 is rotated in order to open and close the locking diaphragm valve 200. In order to prevent the handle 140 from being rotated unintentionally due to vibration, It is a valve that can be inserted.

The body 110 has an inlet 111 through which the fluid flows and an outlet 112 through which the fluid is discharged. The inlet 110 and the outlet 112, through which the fluid is discharged, It is preferable that the opening / closing flow path 113 is provided on the upper side.

In detail, the inlet port 111 is formed in the upper part of the opening / closing flow path 113 (see FIG. 1) so that the fluid can flow into the body part 110 from the fluid- As shown in FIG.

The body 110 is made of a metal or synthetic resin material having a strength of at least a certain level so as to stably support the transportation pipes 1 and 2 so as to prevent corrosion caused by fluid flowing along the inside thereof. And may be made of copper, stainless steel, PVC, or the like.

Here, the upper side is preferably understood as a direction perpendicularly spaced from the floor, and the lower side is preferably understood as a direction perpendicular to the floor. In addition, it is preferable that the above-mentioned pipeline (1, 2) is understood to mean a metal pipe or a synthetic resin pipe used for transporting fluid such as liquid or gas in general industry.

The opening and closing passage 113 is connected to the inlet 111 and is formed as a space substantially inside the body 110. One side of the opening and closing passage 113 is connected to the outlet 112 to discharge the fluid. In addition, the outlet 112 may be formed to extend downward so as to discharge fluid from the opening / closing passage 113, and then to be rounded toward the rear side where the fluid flows.

Here, it is preferable that the front side is understood as the direction in which the fluid flows, and the rear side is preferably understood as the direction in which the fluid is discharged.

The lifting and closing part 120 may include a diaphragm 121, a sealing part 122, and a stem part 123.

In detail, the lifting and closing part 120 is disposed on the upper side of the body part 110 and is vertically moved so as to selectively open and close the opening and closing flow path. In addition, the body 110 may have a hollow shape extending upward from the upper end thereof and connected to the opening / closing passage 113, and one end of the elevating / closing part 120 may be inserted into the hollow.

At this time, it is preferable that the diaphragm 121 is provided at one end of the lifting and closing part 120. If necessary, the diaphragm 121 may be provided in plurality. Here, the diaphragm 121 is disposed on the upper side of the opening / closing passage 113, and the opening / closing state of the opening / closing passage 113 can be controlled by shielding or opening the inlet 111.

The diaphragm 121 is preferably made of a cobalt alloy such as Elgiloy so as to have corrosion resistance and high elastic modulus and resist the fatigue of the metal.

Of course, since it may be made of various kinds of nickel alloys according to circumstances, it is not limited in material, but is preferably made of a material having corrosion resistance and high elastic modulus.

Meanwhile, the lower end of the lifting and closing part 120 may be provided with the sealing part 122 to open and close the opening and closing passage 113 as the lifting and lowering of the lifting and lowering passage 113 occurs. At this time, the sealing part 122 may include a sheet member 122a to be in contact with the upper side of the diaphragm 121. Here, the sheet member 122a is preferably formed of a synthetic resin material such as polychlorotrifluoroethylene (PCTFE).

Of course, other types of fluororesins such as PTFE may be used. However, the material is not limited to a material, but is preferably formed of a material having excellent mechanical properties such as ductility and strength to facilitate the maintenance of airtightness.

The sheet member 122a may have a profile covering an upper side of the diaphragm 121 so that a gap is formed on the diaphragm 121 to prevent fluid from flowing out.

The sheet member 122b may be disposed on the sheet member 122a so as to press the sheet member 122a and the urging member 122b may be disposed on the sheet member 122a, So that the abutting surface can be rounded in the downward direction.

On the other hand, the stem portion 123, which is selectively movable upward and downward, may be included on the upper side of the pressing member 122b. At this time, the stem 123 may have a groove formed in the pressing member 122b so that one end thereof may be inserted.

The body 110 may include a cover body 124 and the cover body 124 may surround the body 110 such that the sealing part 122 and the stem 123 are covered. As shown in Fig. Here, a screw thread is formed at an inner circumference of the cover body 124 at a predetermined pitch interval, and a thread of a corresponding profile is formed on an outer circumference of the stem 123, so that the screw thread can be screwed.

When the stem portion 123 is rotated in the circumferential direction, the stem portion 123 is moved upward or downward. When the stem portion 123 is moved downward, the sealing portion 122 presses the diaphragm 121, Can be closed. The space of the opening / closing passage 113 can be increased so that the pressing force of the sealing portion 122 is reduced and the fluid can flow in the direction of the discharge port 112 when moving upward.

The body 110 and the cover body 124 may be integrally formed, but they may be separated from each other for ease of assembly.

The cover body 124 and one end of the body 110 are covered with a bonnet nut 125 so that the cover body 124 and the body 110 are engaged with each other. . Accordingly, the cover body 124 and the body 110 are disposed in contact with each other, and can be coupled to each other as the bonnet nut 125 is nut-coupled.

The opening / closing passage 113 can be selectively opened and closed by the vertical movement of the stem portion 123, have.

The end of the stem 123 may extend toward the outer side so as to reinforce the sealing effect inside the cover body 124. At this time, the outer circumferential surface of the extended end portion comes into contact with the inner circumferential surface of the cover body portion 124 and the packing member may be provided along the circumferential direction at the extended end portion to reduce wear of the contacting end portion and to reinforce the sealing effect.

Here, the packing member may be made of rubber, silicone, or the like having elasticity so as to be pressurized and elastically supported, and other types of fluororesin such as PTFE may be used as the case may be.

It is preferable that a plurality of elastic members 126 are provided between the sealing part 122 and the stem part 123 to be elastically supported downward.

In detail, the stem portion 123 may be opened due to a loosening phenomenon. Here, it is preferable that the unlocking phenomenon is caused by an unintentional rotational force generated by the pressure of fluid introduced from the inlet port 111, external force such as vibration or impact, and the stem portion 123 is rotationally moved to move upward .

At this time, the elastic member 126 is provided between the sealing part 122 and the stem part 123 and can be elastically supported downward. Here, the elastic member 126 may be a disk spring, but may be a plate spring or the like.

In addition, a plurality of portions may be provided anywhere a space is formed between the sealing portion 122 and the stem portion 123, so that the effective friction area of the stem portion 123 can be increased.

Therefore, even if the stem portion 123 is loosened, the pressing force is maintained by the elastic member 126, so that the opening / closing flow path 113 can be prevented from being opened. Due to the stability against vibration and impact, The sealing property can be further improved.

The stopper 130 may be formed with a stem through hole 131 through which the lifting and closing part 120 is inserted and the other end of the body 110 may be covered.

The other end of the lifting and closing part 120 may be inserted into the stem through hole 131. The stopper part 130 may be formed substantially at the other end of the stem part 123 and the cover body part 124, As shown in FIG.

At this time, it is preferable that a plurality of pressing holes are formed on the outer circumferential surface of the stopper, and a pressing screw 134 corresponding to the profile of the pressing hole may be fastened to the pressing hole.

As a matter of course, threads may be formed on the inner periphery of the stopper portion 130 and the outer periphery of the lifting and securing portion 120 and may be screwed to each other.

Further, it is preferable that a lock groove 132 is formed on the upper surface of the stopper portion 130. At this time, it is preferable that the vertical length of the lock groove 132 is less than the vertical length of the stopper 130. In some cases, the lock groove 132 passes through the stopper 130 Or may be provided alone.

Further, it is preferable that the locking groove 132 is formed at a position aligned with the traveling direction of the fluid with the transportation pipe 1, 2 when the locking groove 132 is in the closed state, It can be formed anywhere.

Here, the open state is preferably understood as a state in which the diaphragm 121 is moved upward to allow the fluid to flow through the transportation pipes 1 and 2, and the opening / closing flow path 113 is opened. 121 are moved downward to close the opening / closing flow path 113, the flow of the fluid is blocked.

The handle 140 may be disposed on the upper side of the stopper 130 so that the handle 120 may be connected to the upper end of the stopper 130 so that the lifting /

A lock through hole 141 is formed in the upper surface of the handle 140 to penetrate the elastic support locking pin 150 to be described later and the elastic support locking pin 150 is extended It is preferable that a support hole 142 is formed.

The handle 140 may be disposed on the upper side of the stopper 130 so as to substantially cover one end of the stopper 130. At this time, protrusions may be formed along the circumferential direction on the outer circumference of the handle 140 so as to be spaced apart from each other by a predetermined angle so as to facilitate the user's turning operation.

A stem support portion 146 corresponding to the profile of the stem through hole 131 extends downward at a central portion of the handle portion 140 and a serration hole 146 is formed at a central portion of the stem support portion 146 143 may be formed.

A plurality of coupling protrusions 143a may protrude inwardly in the circumferential direction on the inner circumferential surface of the serration hole 143 at predetermined angular intervals. At this time, a serration protrusion 123a may be extended and protruded at one end of the stem 123 so as to be inserted into the serration hole 143.

The serration protrusions 123a may be formed between gaps formed between a plurality of the coupling protrusions 143a so that the handle portion 140 and the lifting and securing portion 120 are serially connected .

In addition, the cross section of the serration protrusion 123a may be formed as a triangle, but may be a polygon such as a square, a hexagon, etc. have.

For example, if the serration protrusion 123a has a triangular cross section, all the corner portions may be inserted between the plurality of coupling protrusions 143a. When the handle portion 140 rotates, The position of the serration projection 123a is fixed.

Accordingly, the serration protrusion 123a also rotates due to the rotational force of the handle 140, so that the lifting / closure part 120 can be moved up and down.

Since the handle 140 and the lifting and securing part 120 are serially engaged, the assembly and detachment of the handle part 140 and the lifting and securing part 120 can be facilitated, and the assembling performance can be further improved. The production efficiency can be increased.

Moreover, since the direct coupling is not achieved by the method of adhesion or the like, wear and breakage of the connection portion due to external force such as impact is prevented, and durability can be further improved.

The elastic support type locking pin 150 may be selectively inserted into the lock groove 132 through the lock through hole 141.

Here, it is preferable that the rotation of the handle 140 is restricted by the stopper part 130 which is fixed when the elastic support type locking pin 150 is selectively inserted into the lock groove 132 , And is elastically fixed to the support hole (142).

The locking hole 150 may be rotated in the direction of the lock groove 132 by the rotation of the handle 140.

At this time, the handle portion 140 is rotated to the maximum, so that when the stem portion 123 is kept locked, the lock through hole 141 and the lock groove 132 are aligned with each other.

Here, it is preferable that the locking state is understood as a state in which the handle portion 140 is constrained by inserting the elastic support type locking pin 150 into the locking groove 132, It is desirable to understand that the handle portion 140 is rotatable by separating the handle 150 from the handle portion 140. [

 Therefore, the lock groove 132 may be formed at a position where the lock hole 132 is aligned with the lock hole 141 when the handle 140 is locked.

It is preferable that the elastic support type locking pin 150 has a lock extension part 151 which penetrates the lock through hole 141 and is selectively inserted into the lock groove 132.

In this case, the length of the lock extension part 151 in the vertical direction may be equal to the sum of the lengths of the lock through-hole 141 and the lock groove 132 in the vertical direction. The radius of the lock extension part 151 may be smaller than the radius of the lock through hole 141 and the lock groove 132 so that the user can selectively insert and remove the lock extension part 151. [

It is preferable that a connection extension part 152 extending from the upper end of the lock extension part 151 to the outer side in the radial direction of the handle part 140 is provided. The connection extension part 152 may extend from the upper end of the lock extension part 151 in a radial direction outside the handle part 140 in a horizontal direction, Or may be inclined upward or downward.

The other end of the extension part 152 extends downward to face the outer periphery of the handle part 140 and has one side corresponding to the support hole 142 radially inwardly protruding radially inward, And an elastic extension part 153 formed with the elastic part.

Specifically, the elastic extension portion 153 extends downward from the extended end of the connection extension portion 152, and one side corresponding to the position where the support hole 142 is formed is radially inwardly protruded roundly. A pressing portion 153a can be formed. At this time, the shape of the inlet side of the support hole 142 may be formed such that the round plate of the elastic pressing portion 153a corresponds to the protrusion.

The gap between the lock extending portion 151 and the elastic pressing portion 153a is set such that the elastic pressing portion 153a is elastically inserted into the supporting hole 142 when the elastic supporting type locking pin 150 is locked, Is set to be less than a distance between the lock groove (132) and the outer periphery of the handle portion (140).

Specifically, as the lock extension portion 151 is inserted into the lock groove 132, the elastic pressing portion 153a is elastically deformed outwardly as it is pressed against the outer peripheral surface of the handle portion 140 and pressed. have. The length of the connection extension part 152 is set such that the gap between the lock extension part 151 and the elastic part 153a is elastically deformed by the elastic force of the lock groove 132 and / May be set to be less than the interval between the outer periphery of the handle portion 140. [

The distance between the lock extension portion 151 and the elastic pressing portion 153a is adjusted by the length of the lock extension portion 152 extending downward from the connection extension portion 152 so as to face the outer periphery of the handle portion 140, May be set to be less than the distance between the outer periphery of the handle portion (140) and the outer periphery of the handle portion (140).

Therefore, the elastic pressing portion 153a elastically deformed elastically in the outward direction can be temporarily fixed as it is inserted into the supporting hole 142. [ Here, the user can easily confirm whether the lock extension 151 is completely inserted into the lock groove 132 by the click feeling inserted into the support hole 142 and the lock state is set smoothly. Further, since the elastic support type locking pin 150 is fixed and prevented from being separated by vibration and impact, the safety can be further improved.

The elastic support portion 150 may be formed to include the lock extension portion 151, the connection extension portion 152, and the elastic extension portion 153 as the annular rod or the solid rod is bent . Of course, depending on the case, the elastic support type locking pin 150 may be integrally formed with the extensions 151, 152, and 153 through a process such as casting.

Further, it is preferable that the elastic support type locking pin 150 is formed of stainless steel so as to have high hardness, durability and corrosion resistance.

Of course, since it may be formed of a titanium alloy as the case may be, it is preferably formed of a material having high hardness and durability and corrosion resistance so as not to be limited in material but to prevent damage due to vibration and impact.

A connection member 154 connected to one side of the lock type diaphragm valve 200 may be connected to one side of the elastic extension 153. Here, the connection member 154 may be formed in the form of a wire formed of stainless steel.

At this time, a connection hole is formed at one side of the elastic extension part 153 so that the connection member 154 can be caulked and coupled by a method such as adhesion, welding, etc., The loss to the user 150 can be prevented.

Also, the length of the connection member 154 may be adjusted so that the elastic support-type locking pin 150 may be inserted smoothly according to a position connected to one side of the locking diaphragm valve 200.

Further, a wire fastener may be further provided on one side of the connecting member 154 so as to be adjusted in length. As the connecting member 154 is wound by the wire tightening body when the elastic supporting type locking pin 150 is locked, a tensile force is provided to the elastic supporting type locking pin 150 in the downward direction, So that the stability can be further improved.

Meanwhile, the conventional diaphragm valve is provided with a minimum rotation angle of about 5 degrees so that even when the handle portion 140 is finely moved, the diaphragm valve is changed from the closed state to the open state or from the open state to the closed state.

Here, the minimum rotation angle is preferably understood as an angle at which the handle 140 rotates to switch from the closed state to the open state.

The handle 140 may be rotated in the circumferential direction by a predetermined angle unit to prevent fluid leakage due to a minute impact.

In order to increase the minimum rotation angle of the handle 140, a thread is formed on the inner circumference of the cover body 124 at a predetermined pitch interval, and a profile corresponding to the outer circumference of the stem 123 A screw thread can be formed and screwed.

In this case, the pitch interval may be set so that the stem 123 is moved upward or downward when the thread is rotated 90 degrees or more. Since the minimum rotation angle is set to be larger than that of the conventional art, The phenomenon can be prevented in advance.

Meanwhile, a state informing hole 144 may be formed in the handle 140 so that the user can clearly check the opening or closing state of the lock diaphragm valve 200. The status informing part 135 may be interposed between the handle part 140 and the stopper part 130 so that the status informing hole 144 is opened or closed.

The state notifying unit 135 may be fixed to the upper surface of the stopper 130 by an adhesive or the like and may have holes 135a and 135a corresponding to the stem through hole 131 and the lock groove 132, 135b may be formed.

The upper surface of the status informing part 135 is provided with a locking state such as 'close' or 'close' so as to confirm the locking state of the state notifying hole 144 when the locking pin 150 is locked by the elastic supporting type locking pin 150 The phrase may be written.

At this time, when the handle 140 is released from the locked state and is rotated in the opening direction, it may be marked along the circumferential direction so that the closed state of the state informing hole 144 is confirmed up to the minimum rotation angle set by the thread .

The stem portion 123 is rotated to a position higher than the minimum rotation angle and is moved upward and from the point where the opening / closing channel 113 is opened, an open state such as 'Open' or 'Open' is displayed along the circumferential direction .

Accordingly, the user can easily check the current state of the lock-type diaphragm valve 200 through the state notifying hole 144 during the rotation or visually checking or checking of the handle 140, Can be confirmed.

Moreover, since the rotational state of the handle 140 due to vibration and impact can be confirmed, the leakage of the fluid can be prevented in advance, and safety and work efficiency can be greatly improved.

A handle cover 145 may be provided on the handle 140. Here, the handle cover part 145 may be fixed to the handle part 140 by an adhesive or the like, and may be fitted to the handle part 140. At this time, the handle cover part 145 is provided with holes 145a and 145b corresponding to the status notification hole 144 and the lock through hole 141, and the serration holes 143 are formed to be shielded .

Therefore, the serration protrusion 123a can be prevented from protruding above the serration hole 143 due to wear of components or external force, and the inner component can be prevented from being exposed to the outside, have.

In addition to the conventional diaphragm valve, the conventional valve can change the structure of the handle portion and the lifting / closure portion of the conventional valve based on the stopper portion 130. Accordingly, the conventional valve can be applied as a lock type valve in which the elastic support type locking pin 150 is selectively inserted by the user, so that the compatibility can be remarkably improved.

The pressing hole includes a lower pressing hole 133a to which the pressing screw 134 is fastened so that the stopper part 130 is fixed to the body part 110 and a lower pressing hole 133a to which the handle part 140 and the lifting / And an upper pressing hole 133b selectively communicating with the support hole 142 so that the upper plate 120 is fixed.

Here, the lower pressing hole 133a may be formed on one side of the outer peripheral surface of the stopper 130, which covers the other end of the body 110, and may be provided along the circumferential direction. The lower pressing hole 133a may be perpendicular to the cover body 124 to cover the lifting and closing part 120 and may be tightened by the pressing screw 134 to be pressed.

The upper pressing hole 133b may be selectively in communication with the support hole 142 to fix the handle 140 and the lifting and securing part 120. [

An upper fixing hole 146a through which the pressing screw 134 can be fastened is formed on the stem support portion 146. The upper pressing hole 133b and the upper fixing hole 146a are formed in the support hole 146a, 142, respectively.

The upper pressing hole 133b can be selectively communicated with the support hole 142 in accordance with the rotation of the handle 140. The upper pressing hole 133b can be communicated with the supporting hole 142, May be inserted into the upper pressing hole 133b through the support hole 142. [

The handle 140 and the lifting and securing part 120 may be fixed as the pressing screw 134 is fastened to the upper pressing hole 133b and the upper fixing hole 146a.

At this time, the pressing screw 134 may be formed with a thread on the outer periphery, and a thread having a profile corresponding to the outer periphery of the pressing screw 134 may be formed on the inner periphery of the pressing hole.

The pressing screw 134 fastened to the upper pressing hole 133b is set to be less than the gap between the upper pressing hole 133b and the upper fixing hole 146a so as not to protrude into the supporting hole 142 It is possible. The length of the pressing screw 134 fastened to the lower pressing hole 133a and the length of the pressing screw 134 fastened to the upper pressing hole 133b may be set differently.

The pressing screw 134 is fixed to one end of the cover body 124 and is coupled to the one end of the stem 123 to generate vibration when the stem 123 and the cover body 124 are assembled, (124) may be minimized.

Further, when the direction of the vibration is repeated in the right-left direction or the back-and-forth direction, the pressing screw 134 is pressed and coupled to the screw threads formed in the up-and-down direction, so that the influence of vibration is minimized and inertial loosening due to vibration is prevented, The stability can be further improved.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And these modifications fall within the scope of the present invention.

110: Body part 120:
121: diaphragm 122: sealing part
123: stem portion 126: elastic member
130: stopper portion 134: pressing screw
140: handle portion 141: locking through hole
142: Support hole 150: Elastic retaining type locking pin
200: Locking type diaphragm valve

Claims (5)

A body portion having an inlet through which fluid is introduced and an outlet through which fluid is discharged, the body having an inlet and an outlet for discharging the fluid according to the opening and closing states, respectively;
A lifting / closure part disposed on the upper side of the body part and coupled to one end, the lifting / closing part being vertically moved to selectively open / close the opening / closing passage;
A stopper part formed with a stem hole through which the lift seal part penetrates and coupled with the other end of the lift seal part so as to cover, a lock groove formed on the upper surface part, and a plurality of pressing holes formed on the outer circumferential surface;
A lock hole is formed in the upper surface of the stopper portion, a support hole is formed in the outer circumferential surface of the stopper portion, and a handle, which is connected to one end of the lifting / part; And
And a elastic support type locking pin which is inserted into the lock groove through the lock through hole and is elastically fixed to the support hole while restricting rotation of the handle part, silver
A lock extension portion inserted through the lock through hole and selectively inserted into the lock groove,
A connection extension portion extending radially outward from the upper end of the lock extension portion of the handle portion,
And a resilient extension portion extending downward from the connection extension portion so as to face the outer circumference of the handle portion and having one side corresponding to the support hole formed radially inwardly and protruding radially inward. delete The method according to claim 1,
And the gap between the lock extending portion and the elastic pressing portion is set to be less than the interval between the lock groove and the outer periphery of the handle portion so that the elastic pressing portion is elastically inserted into the support hole when the elastic support type locking pin is locked. A lockable diaphragm valve. The method according to claim 1,
Wherein the lock through hole and the lock groove are aligned with each other when the handle is locked,
Wherein the diaphragm includes a diaphragm that opens and closes the opening and closing passage, a sealing portion that presses the diaphragm as it ascends and descends, and a stem portion that is moved up and down in accordance with rotation to press the sealing portion, And a plurality of elastic members elastically supported on the lower side. The method according to claim 1,
The pressing hole includes a lower pressing hole through which the pressing screw is fixed so that the stopper part is fixed to the body part and an upper pressing hole which is selectively communicated with the supporting hole so that the handle part and the elevating sealing part are fixed, A lockable diaphragm valve.

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