KR20150034830A - angle valve having locking device - Google Patents

Abstract

This invention relates to a method to prevent a handle from getting loosened by applied impact or vibration generated from a valve body while an angle valve controlling the flow of gas or toxic gas in a pipe is locked. According to an embodiment of the invention, an angle valve with a locker comprises: a valve body equipped with an inlet and an outlet through which fluid flows in and out; a valve cap with a thread hole at the center that is installed on the valve body; a valve shaft having a threaded part corresponding to the thread hole formed on the outer circumferential surface, and moving up and down along the direction of handle installed in the upper part; a valve sheet connected at the bottom of the valve shaft to open/close a passage between the inlet and outlet according to operation of the handle; bellows installed between the top surface of the sheet and the bottom of the valve cap; a ratchet wheel formed at a specific position on the outer circumferential surface of the valve shaft; a ratchet lever fixed to be rotated on a mounting groove formed at a predetermined position inside the valve cap, so that a hanging unit is selectively connected between the adjacent teeth to the ratchet wheel; an elastic material elastically supporting the hanging unit connected between the adjacent teeth of the ratchet wheel; and a knob type control key connected to a through tube on the valve cap to be connected to the mounting groove, so that the knob type control key either unlocks or keeps the ratchet lever for the ratchet wheel locked.

Description

Angle valve having locking device < RTI ID = 0.0 >

The present invention relates to an angle valve having a locking device and, more particularly, to an angle valve that controls a flow of a gas or a toxic liquid material in a pipe, To an angle valve having a locking device that can prevent loosening of the valve body.

Generally, a valve is used to control the flow rate, pressure and temperature of a fluid flowing in a pipe, and a stop valve, a gate valve, a check valve, etc. .

The stop valve includes a glove valve having a straight inlet and an outlet in the direction of fluid flow and moving in a direction perpendicular to the valve seat, and an angle valve having an inlet and an outlet through which the fluid flows, ).

The gate valve has an inlet and an outlet at right angles to the flow direction of the fluid, and the valve is tightly fitted into the valve seat to open and close the valve.

The check valve is a valve that prevents backflow of fluid.

In the conventional stop valve and gate valve, when the handle is tightened or loosened, the valve shaft is rotated forward or reverse while the valve seat installed at the end of the valve shaft opens and closes the inlet and the outlet of the valve body to block the flow of the fluid.

However, even when the handle is in the locked state, the vibration of the valve or the shock applied to the handle loosens the locking force of the handle, and the valve seat is disengaged and the airtightness of the valve is deteriorated. As a result, when a separate locking device is installed, the installation is troublesome and the cost cost is increased.

Further, in many cases, the stop valve and the gate valve do not have a valve opening and closing display portion, and even when there is an opening and closing display portion of the valve, it is impossible to clearly identify whether the valve is opened or completely closed.

A "loosening prevention valve" is disclosed in Utility Model Registration Application 20-2010-0013445.

The valve includes a valve body and a handle secured to the valve cap and mounted to a valve shaft exposed above the valve cap,

A groove formed in an outer peripheral surface of the valve cap,

A fixed shaft provided on a lower surface of the handle,

A stopper provided rotatably with respect to a fixed shaft of the handle and protruding toward the groove so as to be fitted into the groove;

The stopper includes elastic means for providing an elastic force so that one side is pressed in the radial direction of the valve cap. The protrusion of the stopper is inserted into the groove in a state in which the flow of the fluid is completely locked by rotating the handle. .

In the embodiment of the present invention, an angle valve having a locking device that can maintain the airtightness of the valve as the handle is prevented from being released by an impact applied to the handle or a vibration generated in the valve body in the locked state of the angle valve Lt; / RTI >

An embodiment of the present invention relates to an angle valve provided with a locking device that allows an operator to visually confirm whether or not the angle valve is in a locked state, thereby realizing reliability and practicality.

In an angle valve having a locking device according to an embodiment of the present invention,

A valve body having an inlet and an outlet through which fluids are introduced and discharged;

A valve cap mounted on the valve body and having a screw hole formed at the center thereof;

A valve stem formed on an outer circumferential surface corresponding to the screw hole and being lifted and lowered along the screw hole according to an operation direction of a handle provided at an upper end;

A valve seat connected to a lower end of the valve shaft and opening / closing a passage between the inlet and the outlet by operation of the handle;

A bellows disposed between an upper surface of the valve seat and a bottom surface of the valve cap;

A ratchet wheel formed at a predetermined outer circumferential position of the valve shaft;

A ratchet lever rotatably fixed to a seating groove formed at a predetermined internal position of the valve cap such that the latching portion is selectively engaged between adjacent teeth of the ratchet wheel;

An elastic member elastically supporting the engagement portion between the adjacent teeth of the ratchet wheel;

A ratchet lever coupled to the through hole formed in the valve cap so as to communicate with the seating groove and configured to maintain the locking state of the ratchet lever with respect to the ratchet wheel in accordance with the operation direction of the knob protruding from the outer surface of the valve cap, And a knob-type operation key for allowing the locking device to rotate.

An angle valve provided with a locking device according to another embodiment of the present invention,

A valve body having an inlet and an outlet through which fluids are introduced and discharged;

A valve cap mounted on the valve body and having a screw hole formed at the center thereof;

A valve stem formed on an outer circumferential surface corresponding to the screw hole and being lifted and lowered along the screw hole according to an operation direction of a handle provided at an upper end;

A valve seat connected to a lower end of the valve shaft and opening / closing a passage between the inlet and the outlet by operation of the handle;

A bellows disposed between an upper surface of the valve seat and a bottom surface of the valve cap;

A ratchet wheel formed at a predetermined outer circumferential position of the valve shaft;

A ratchet lever rotatably fixed to a seating groove formed at a predetermined internal position of the valve cap such that the latching portion is selectively engaged between adjacent teeth of the ratchet wheel;

An elastic member elastically supporting the engagement portion between the adjacent teeth of the ratchet wheel;

A ratchet lever coupled to the through-hole formed in the valve cap so as to communicate with the seating groove, and a push button protruding from the outer surface of the valve cap is pushed or pulled to keep the ratchet lever in a locked state with respect to the ratchet wheel And a push button type operation key for releasing the locking of the locking device.

According to a preferred embodiment, in order to switch the ratchet wheel into the locked state or the unlocked state by the operation of the knob,

A fixing pin coupled to a coupling hole formed in the valve cap so as to communicate with the through hole in a direction perpendicular to the through hole,

A first support stage which is spirally formed at a predetermined position of a rod of the locking pin and is engaged with the fixing pin to switch the ratchet wheel into a locked state when the knob is rotated so that the knob is spaced from the outer surface of the valve cap, And a slot having a second support end for engaging the ratchet wheel to the unlocking state when the knob is rotated so that the knob is in close contact with the outer surface of the valve cap.

In order to convert the ratchet wheel into an unlocking state or a locking state by pushing or pulling the pushbutton,

A locking ball coupled to a coupling hole formed in the valve cap so as to communicate with the through hole in a direction perpendicular to the through hole,

An elastic member elastically supporting the locking ball against the locking pin side,

Wherein the locking pin is formed at two places on the outer periphery of the rod at the outer periphery of the rod, and when the pushbutton is pulled away from the outer surface of the valve cap, the locking ball is seated to move the ratchet wheel to the locked state Wherein when the push button is pushed in close contact with the outer surface of the valve cap, the locking ball detached from the first locking groove is seated and a second locking groove for switching the ratchet wheel to the unlocking state .

The embodiment of the present invention configured as described above has the following advantages.

In the locked state of the angle valve, the release of the handle is completely prevented by the impact applied to the handle or the vibration generated in the valve body, thereby improving the airtightness and performance of the valve.

In addition, the operator can visually confirm whether or not the angle valve is in the locked state, thereby improving the reliability, practicality, and convenience.

1 is a perspective view of an angle valve provided with a locking device according to an embodiment of the present invention,
2 is an exploded perspective view of a locking device of a valve shaft in an angle valve having a locking device according to an embodiment of the present invention,
FIG. 3 is a view showing a locked state of a locking device of a valve shaft in an angle valve provided with a locking device according to an embodiment of the present invention,
4 is an unlocked state of a locking device of a valve shaft in an angle valve provided with a locking device according to an embodiment of the present invention,
FIG. 5 is a view of a locked state of a locking device of a valve shaft in an angle valve provided with a locking device according to another embodiment of the present invention,
6 is an unlocked state of a locking device of a valve shaft in an angle valve provided with a locking device according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in a manner that allows a person skilled in the art to easily carry out the invention. And does not mean that the technical idea and scope of the invention are limited.

The angle valve having a locking device according to an embodiment of the present invention shown in Figs. 1 to 4,

A valve body 12 formed with an inlet 10 and an outlet 11 through which fluids are introduced and discharged;

A valve cap (14) mounted on the valve body (12) and having a screw hole (13) formed at the center thereof;

A valve shaft 17 formed on the outer periphery of the threaded portion 13 corresponding to the screw hole 13 and lifted and lowered along the screw hole 13 in accordance with an operation direction of the handle 16 provided at the upper end;

A valve seat 18 connected to the lower end of the valve shaft 17 for opening and closing a passage between the inlet 10 and the outlet 11 by the operation of the handle 16;

A bellows 19 installed between the upper surface of the valve seat 18 and the bottom surface of the valve cap 14;

A ratchet wheel 20 formed at a predetermined outer circumferential position of the valve shaft 17;

A fixing pin 35 fixed to a seating groove 23 formed at a predetermined position inside the valve cap 14 so as to selectively engage the engaging portion 22 between adjacent teeth 21 of the ratchet wheel 20 A ratchet lever 24 rotatably fixed by a ratchet (not shown);

An elastic member 25 elastically supporting the engagement portion 22 between the adjacent teeth 21 of the ratchet wheel 20;

The ratchet is connected to the through hole 26 formed in the valve cap 14 so as to communicate with the seating groove 23 and is connected to the ratchet 26 in accordance with the operation direction of the knob 27 protruding from the outer surface of the valve cap 14. [ And a knob type operation key 28 for holding or releasing the locking state of the ratchet lever 24 with respect to the wheel 20.

In order to switch the ratchet wheel 20 into the locked state or the unlocked state by the operation of the knob 27,

A fixing pin 30 coupled to a coupling hole 29 formed in the valve cap 14 so as to communicate with the through hole 26 in a direction perpendicular to the through hole 26,

When the knob 27 is rotated so that the knob 27 is spaced apart from the outer surface of the valve cap 14, the rod 31 of the locking pin 28 is spirally formed at a predetermined position, A first support end 32 for switching the ratchet wheel 20 to a locked state and a second support end 32 for rotating the knob 27 so that the knob 27 is in close contact with the outer surface of the valve cap 14, A slot 34 may be provided in which the second support end 33 for engaging the ratchet wheel 30 to the unlocking state is provided.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the use of an angle valve provided with a locking device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a state in which the flow of the fluid in the valve body 12 is blocked by the valve seat 18 due to the fall of the valve shaft 15. [ The valve seat 18 fixed to the lower end of the valve shaft 15 blocks the passage between the inlet 10 and the outlet 11 so that the fluid (gas, liquid material, etc.) . ≪ / RTI >

Since the locking device of the valve shaft 17 is in the locked state, the latching portion 22 of the ratchet lever 22, which is rotatably fixed to the seating groove 23 formed at the predetermined position in the valve cap 14, The ratchet wheel 22 is held between the adjacent teeth 21 of the ratchet wheel 20 by the elastic force of the elastic member 25. [ When the ratchet wheel 20 is locked at a predetermined position on the outer circumference of the valve shaft 15 so that an impact is applied to the handle 16 or a vibration is generated in the valve body 12 It is possible to prevent the handle 16 from being loosened.

As the knob-type operation key 28 keeps the state away from the outer surface of the valve cap 14, the operator can lock the valve shaft 17 by locking the ratchet wheel 20 Can be visually confirmed.

4 is a state in which the valve shaft 15 is lowered to block the fluid flow in the valve body 12 by the valve seat 18 and the valve shaft 17 is unlocked. When the knob 27 of the operation key 28 coupled to the through hole 26 of the valve cap 14 is rotated in the direction of the arrow while pressing the knob 27 with the valve shaft 17, Is simultaneously moved toward the valve shaft (15) along the through hole (26) and simultaneously rotated. The second supporting end 33 of the slot 34 formed in a spiral shape around the outer periphery of the rod 31 is caught by the fixing pin 30 fixed to the valve cap 14 to stop the movement of the operation key 28, do.

The end of the rod 31 of the operation key 28 presses one end of the ratchet lever 24 so that the ratchet lever 24 rotates in the counterclockwise direction about the fixed pin 35 The member 25 is subjected to a compressive force). As a result, the latching portion 22 of the ratchet lever 24 is separated from the adjacent teeth 21 of the ratchet wheel 20, so that the locked state of the ratchet wheel 20 is switched to the released state.

The locking state of the valve shaft 17 is switched to the released state as the locking state of the ratchet wheel 20 is released. Therefore, when the operator rotates the handle 16 in the counterclockwise direction, the valve shaft 15 is moved upward, so that the airtightness of the valve seat 18 can be released.

2, the passage between the inlet 10 and the outlet 11 of the valve body 12 is opened by the valve seat 18 and the valve body 12 Is moved to the discharge port 11 side.

As described above, according to the angle valve having the locking device according to the embodiment of the present invention, when the knob-type operation key 28 is in close contact with the outer surface of the valve cap 14, The valve shaft 17 is moved upward by operating the handle 16 of the valve shaft 17 which has been unlocked by the operator so that the inlet 10 in the valve body 12 So that the passage between the discharge ports 11 can be opened.

When the knob-type operation keys 28 are spaced apart from the outer surface of the valve cap 14 by a predetermined distance, the ratchet wheel 20 of the valve shaft 17 is kept in the locked state. It is possible to prevent the handle 16 from being loosened due to a shock applied to the valve body 16 or a vibration generated in the valve body 12. [

The angle valve having the locking device according to another embodiment of the present invention shown in Figs. 5 and 6,

A valve body 12 formed with an inlet 10 and an outlet 11 through which fluid (gas or the like) is introduced and discharged;

A valve cap (14) mounted on the valve body (12) and having a screw hole (13) formed at the center thereof;

A valve shaft 17 formed on the outer periphery of the threaded portion 13 corresponding to the screw hole 13 and lifted and lowered along the screw hole 13 in accordance with an operation direction of the handle 16 provided at the upper end;

A valve seat (18) connected to a lower end of the valve shaft (17) and opening / closing a passage between the inlet (11) and the outlet (12) by the operation of the handle (16);

A bellows 19 installed between the upper surface of the valve seat 18 and the bottom surface of the valve cap 14;

A ratchet wheel 20 formed at a predetermined outer circumferential position of the valve shaft 17;

A ratchet lever 20 rotatably fixed to a seating groove 23 formed at a predetermined position in the valve cap 14 so that the latching portion 22 is selectively engaged between adjacent teeth 21 of the ratchet wheel 20, (24);

An elastic member 25 (for example, a torsion spring is used) for elastically supporting the engagement portion 22 between the adjacent teeth 21 of the ratchet wheel 20;

A push button 36 which is engaged with a through hole 26 formed in the valve cap 14 to communicate with the seating groove 23 and is protruded from the outer surface of the valve cap 14, And a push button type operation key 37 for maintaining or releasing the locking state of the ratchet lever 24 with respect to the ratchet wheel 20.

In order to switch the ratchet lever 24 to the unlocking or locking state by pushing or pulling the pushbutton 36,

A locking ball 39 coupled to a coupling hole 38 formed in the valve cap 14 so as to communicate with the through hole 26 in a direction perpendicular to the through hole 26,

An elastic member 40 (for example, a compression coil spring is used) for urging the locking ball 39 toward the operation key 37 side to elastically support the locking ball 39,

The locking bolt 39 is formed at two places annularly on the outer periphery of the rod 41 of the operation key 37. When the pushbutton 36 is pulled away from the outer surface of the valve cap 14, A first locking groove 42 for locking the ratchet wheel 20 into a locked state when the push button 36 is pushed to come in close contact with the outer surface of the valve cap 14, And a second locking groove 43 for locking the ratchet wheel 39 into an unlocked state by seating the locking ball 39 detached from the locking groove 42.

A push button type operation key 37 in which the first and second locking grooves 42 and 43 are formed and a locking ball 39 selectively seated in the first and second locking grooves 42 and 43, And the elastic member 40 that elastically supports the locking ball 39 by pressing the locking ball 39 toward the rod side of the operation key 37. The configuration of the angle valve provided with the locking device according to the embodiment of the present invention, The detailed description of these configurations will be omitted, and the same reference numerals will be used for the duplicated configurations.

5 is a view showing that the handle 16 is kept locked as the ratchet wheel 20 is locked. The push button type operation key 37 is spaced apart from the outer surface of the valve cap 14 by a predetermined distance and the locking ball 39 is seated in the first locking groove 42. The latching portion 22 of the ratchet lever 24 is held between the adjacent teeth 21 of the ratchet wheel 20 by the elastic force of the elastic member 25. [

Therefore, it is possible to prevent the handle 16 from being loosened even when the handle 16 is impacted or the valve body 12 is vibrated.

6 is a view showing that the ratchet wheel 20 is unlocked to release the handle 16 from its locked state. Since the push button type operation key 37 is in close contact with the outer surface of the valve cap 14, the locking ball 39 detached from the first locking groove 42 is inserted into the second locking groove 43 Lt; / RTI >

The end of the rod 41 of the operation key 37 presses the one end of the ratchet lever 24 and rotates in the counterclockwise direction so that the engagement portion 22 of the ratchet lever 24 Is released from between the adjacent teeth 21 of the ratchet wheel 20 (at this time, the elastic member 25 is subjected to compressive force). At this time, the locked state of the ratchet wheel 20 is released, so that the locked state of the handle 16 is switched to the released state.

Therefore, when the valve shaft 17 is upwardly moved by operating the handle 16, the valve seat 18 is released from the airtight state, so that the valve seat 18 is opened from the inlet 10 of the valve body 12, (11). ≪ / RTI >

10; Inlet
11; outlet
12; Valve body
13; Napong
14; Valve cap
15; Thread
16; handle
17; Valve shaft
18; Valve seat
19; Bellows
20; Ratchet wheel
21; teeth
22; [0030]
23; Seat groove
24; Retort lever
25; Elastic member
26; Through-hole
27; Knob
28; Knob type operation keys
29; Joining ball
30; Fixing pin
31; Rod
32; The first support stage
33; The second support stage
34; Slot
35; Fixing pin
36; push
37; Push type operation keys
38; Joining ball
39; Locking ball
40; Elastic member
41; Rod
42; The first locking groove

Claims (4)

A valve body having an inlet and an outlet through which fluids are introduced and discharged;
A valve cap mounted on the valve body and having a screw hole formed at the center thereof;
A valve stem formed on an outer circumferential surface corresponding to the screw hole and being lifted and lowered along the screw hole according to an operation direction of a handle provided at an upper end;
A valve seat connected to a lower end of the valve shaft and opening / closing a passage between the inlet and the outlet by operation of the handle;
A bellows disposed between an upper surface of the valve seat and a bottom surface of the valve cap;
A ratchet wheel formed at a predetermined outer circumferential position of the valve shaft;
A ratchet lever rotatably fixed to a seating groove formed at a predetermined internal position of the valve cap such that the latching portion is selectively engaged between adjacent teeth of the ratchet wheel;
An elastic member elastically supporting the engagement portion between the adjacent teeth of the ratchet wheel;
A ratchet lever coupled to the through hole formed in the valve cap so as to communicate with the seating groove and configured to maintain or unlock the locking state of the ratchet lever with respect to the ratchet wheel in accordance with the direction of operation of the knob protruding from the outer surface of the valve cap And a knob-type operation key. 2. The ratchet wheel according to claim 1, wherein, in order to switch the ratchet wheel into a locked state or an unlocked state by operation of the knob,
A fixing pin coupled to a coupling hole formed in the valve cap so as to communicate with the through hole in a direction perpendicular to the through hole,
A first support stage which is spirally formed at a predetermined position of a rod of the locking pin and is engaged with the fixing pin to switch the ratchet wheel into a locked state when the knob is rotated so that the knob is spaced from the outer surface of the valve cap, And a slot having a second supporting end for engaging the ratchet wheel to the unlocking state when the knob is rotated so that the knob is in close contact with the outer surface of the valve cap. Respectively. A valve body having an inlet and an outlet through which fluids are introduced and discharged;
A valve cap mounted on the valve body and having a screw hole formed at the center thereof;
A valve stem formed on an outer circumferential surface corresponding to the screw hole and being lifted and lowered along the screw hole according to an operation direction of a handle provided at an upper end;
A valve seat connected to a lower end of the valve shaft and opening / closing a passage between the inlet and the outlet by operation of the handle;
A bellows disposed between an upper surface of the valve seat and a bottom surface of the valve cap;
A ratchet wheel formed at a predetermined outer circumferential position of the valve shaft;
A ratchet lever rotatably fixed to a seating groove formed at a predetermined internal position of the valve cap such that the latching portion is selectively engaged between adjacent teeth of the ratchet wheel;
An elastic member elastically supporting the engagement portion between the adjacent teeth of the ratchet wheel;
A ratchet lever coupled to the through-hole formed in the valve cap so as to communicate with the seating groove, and a push button protruding from the outer surface of the valve cap is pushed or pulled to keep the ratchet lever in a locked state with respect to the ratchet wheel And a push button type operation key for releasing the locking of the locking device. 4. The method of claim 3, further comprising the step of moving the ratchet wheel into an unlocking or locking state by pushing or pulling the pushbutton,
A locking ball coupled to a coupling hole formed in the valve cap so as to communicate with the through hole in a direction perpendicular to the through hole,
An elastic member elastically supporting the locking ball against the locking pin side,
Wherein the locking pin is formed at two places on the outer periphery of the rod at the outer periphery of the rod, and when the pushbutton is pulled away from the outer surface of the valve cap, the locking ball is seated to move the ratchet wheel to the locked state Wherein when the push button is pushed in close contact with the outer surface of the valve cap, the locking ball detached from the first locking groove is seated and a second locking groove for switching the ratchet wheel to the unlocking state Wherein the locking device is provided with a locking device.

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