KR101525113B1 - Vacuum valve - Google Patents

Abstract

The present invention relates to an angle valve comprising: a valve housing on which a valve seat is formed; a head part coupled to the upper part of the valve housing; a shaft part spirally coupled to the head part to linearly move; an opening and closing part coupled to the front end of the shaft part to meet with the valve seat; and a handle part coupled to the rear end of the shaft part. A locking groove is formed on the handle part and a locking pin is coupled to the head part. When the opening and closing part meets with the valve seat, the locking pin is inserted in the locking groove so that the vacuum valve can restrict the rotation of the handle part. The present invention can match a closed sign supplied to a worker by an opening and closing notification part with the actual state of the vacuum valve and can prevent the vacuum valve from being unintentionally opened and closed by external force or the mistake of the worker.

Description

Vacuum valve

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum valve, and more particularly, to a vacuum valve for opening and closing a vacuum state of a vacuum state.

The vacuum valve means a device for adjusting the vacuum state by being installed in a pipe or the like between a vacuum pump and a vacuum facility. Such a vacuum valve may be of an angle valve type in which the inlet and the outlet are disposed at right angles or at other angles.

Korean Patent Laid-Open No. 10-2012-0010350 (published on Mar. 23, 2012, hereinafter referred to as "the present document") discloses a vacuum valve for vacuum pressure. The vacuum valve of this document is a vacuum valve. A valve body made up of an upper body and a lower body, an opening / closing plate for closing or closing the valve seat or closing the valve seat, a rotation shaft connected to the opening / closing plate and screwed to the upper body, .

Such a vacuum valve for vacuum pressure has a constitution in which, when the user rotates the handle, the valve is opened or closed by interlocking with the movement of the rotary shaft moving upward or downward so that the opening / closing plate comes into close contact with or falls off from the valve seat.

In particular, the vacuum valve described in this document includes an opening / closing display plate for indicating the opening or closing state of the valve. In operating a vacuum system, it is very important that the operator confirms whether the current facility is in a vacuum state. Therefore, the open / close display panel which visually informs whether the current valve is open or closed is an essential component for enhancing the safety and efficiency of the operation.

In the vacuum valve described in this document, the opening and closing display panel is provided on the handle. The handle is provided with an opening / closing display panel, and an "open" or "closed" indication is displayed through the slot due to the difference in the relative amount of rotation between the handle and the opening / closing display panel.

However, since the vacuum valve having such a configuration is provided on the opening and closing display panel on the handle, there may be a difference between the "open" or "closed" displayed on the opening and closing panel and the actual valve opening or closing state when an error occurs in the handle . If such a difference occurs, the vacuum state of the vacuum equipment can not be accurately determined, which may cause a great deal of trouble in the production of the product and cause a problem of product failure.

Further, even when the vacuum valve is partially opened by the external force in the state where the vacuum valve is closed, it is very difficult for the operator to check the open / close display panel with the naked eye to recognize that the vacuum valve is currently open. This is because the movement of the opening / closing plate is not large when the vacuum valve is partially opened.

Further, since the "open" display and the "closed" display of the vacuum valve opening / closing display panel having such a configuration are not visually distinguished from each other visually, there is a great risk of misunderstanding by the operator regarding the state of the vacuum valve.

In addition, since the vacuum valve of the conventional vacuum valve can be opened or closed easily due to external force, there is a great risk of causing a serious problem.

Korean Patent Publication No. 10-2012-0010350 (2012.03.03. Open)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a vacuum valve that selectively restricts movement of a handle portion in a closed state and increases the visibility of "open" and "closed" It is for that purpose.

It is also an object of the present invention to provide a vacuum valve which clearly distinguishes between "open" and "closed" indications depending on the open state or the closed state.

And it is an object of the present invention to provide a vacuum valve which is operated in such a manner that unlocking and opening of the shut-off panel and the closure panel precisely coincide with each other and unlike a conventional vacuum valve, unintentional operation or external force releases the valve-

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be clearly understood to the operator from the following description.

According to an aspect of the present invention, there is provided a valve assembly including a valve housing having a valve seat formed therein, a head portion coupled to an upper portion of the valve housing, a shaft portion linearly moved by screwing with the head portion, An angle valve comprising an opening / closing part for contacting a seat and a handle part for engaging with a rear end of the shaft part, wherein a lock groove is formed in the handle part, a lock pin is coupled to the head part, The lock pin may be inserted into the lock groove to restrict the rotation of the handle portion.

Preferably, the lock groove may be recessed in a bottom surface of the handle portion so as to be spaced apart from a rotation center of the handle portion.

Preferably, the base lock pin may be arranged long in a direction parallel to the axial direction of the shaft portion.

Preferably, the lock groove and the lock pin may be aligned with respect to the circumferential direction when the opening / closing part abuts against the valve seat.

Preferably, the lock pin is movably coupled to the head portion in a direction parallel to the axial direction of the shaft portion.

Preferably, a push button portion movably coupled in a direction parallel to the axial direction of the shaft portion and spaced apart from the lock pin, and a push button portion interposed between the lock pin and the push button, And a connecting portion for connecting the portion.

Preferably, the upper end portion of the push button portion is disposed outside the head portion.

Preferably, a second elastic member is provided between the push button portion and the head portion to provide a restoring force between the push button portion and the head portion in a direction parallel to the axial direction of the shaft portion.

Preferably, the body includes a rotary shaft formed on the head portion and spaced apart from a shaft center of the shaft portion and parallel to the shaft center, wherein a "closed" mark and an "open" mark are distinguished from each other with the rotary shaft as a starting point; And a rotation inducing unit protruding from the body toward the center of the shaft.

Preferably, the handle portion includes a rotation inducing pin spaced apart from a rotation center of the handle portion and protruding toward the head portion and contacting the rotation inducing portion.

Preferably, when the opening / closing part comes into contact with the valve seat, the rotation guide pin pushes the rotation guide part to rotate the body in either direction with respect to the rotation axis.

Preferably, when the opening / closing part comes into contact with the valve seat, an area marked with a " closing " mark in the body of the opening / closing informing part may be formed to protrude from the head part.

Preferably, the head portion includes an upper head and a lower head disposed below the upper head, and the opening / closing notification portion may be disposed between the upper head and the lower head.

Preferably, the upper head may be provided with a slot in which the opening / closing notification part is located.

Preferably, the lock pin is lowered by the rotation of the handle portion, and the lock pin is inserted into the lock groove of the handle portion by the elasticity of the first elastic member at a position where the lock- .

Preferably, when the push button portion is depressed, the lock is released, and the pivot guide pin can be separated from the pivot guide portion and interlocked with the pivot portion to be opened.

According to an embodiment of the present invention, when the opening / closing part comes into contact with the valve seat, the lock pin formed in the head part is inserted into the lock groove formed in the handle part so as to restrict the handle part from moving in a state where the vacuum valve is closed , And provides a favorable effect of matching the state of the actual vacuum valve with the " closed " indication provided to the operator by the opening / closing notification unit.

According to an embodiment of the present invention, there is provided an advantageous effect that the lock of the handle can be easily released by depressing the push button portion provided to interlock with the lock pin through the connecting portion in a state where the lock pin is inserted into the lock groove to provide.

1 is a view showing a vacuum valve according to a preferred embodiment of the present invention;
Fig. 2 is an exploded perspective view of the vacuum valve shown in Fig. 1,
Fig. 3 is a sectional view of the vacuum valve shown in Fig. 1,
FIG. 4 is a view showing a lock groove and a lock pin of the vacuum valve shown in FIG. 1;
5 is a view showing an operating state of the lock pin and the open / close informing portion in a state in which the vacuum valve is closed,
6 is a view showing an opening / closing informing portion and an elastic member provided in the opening / closing informing portion,
7 is a view showing an opening / closing informing part restored to its original position by the elastic member in a state of being unlocked in the state of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms and the inventor should properly define the concept of the term in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

FIG. 1 is a view showing a vacuum valve according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of the vacuum valve shown in FIG. 1, and FIG. 3 is a sectional view of the vacuum valve shown in FIG. 1 to 3 clearly show only the main feature parts in order to clearly understand the present invention, and as a result various variations of the illustration are expected, and the scope of the present invention is not limited by the specific shapes shown in the drawings Need not be limited.

1 to 3, the vacuum valve 1 according to the preferred embodiment of the present invention includes a valve housing 10, a head portion 20, a shaft portion 30, an opening / closing portion 40, And a handle portion 50, as shown in Fig.

The valve housing 10 may have an inlet port 11 and an outlet port 12 and an angle valve type in which the inlet port 11 and the outlet port 12 are vertically formed. A valve seat 13 may be provided at the entrance of the inlet 11. A movement space of the opening and closing part 40 is provided inside the valve housing 10 and the movement space may be formed to communicate with the inlet 11 and the outlet 12. The head portion 20 can be coupled onto the valve housing 10. . The head portion 20 may be divided into an upper head 21 and a lower head 22 formed below the upper head 21 and coupled directly to the valve housing 10.

A center hole through which the shaft portion 30 passes is provided in the center of the upper head 21 and the lower head 22 and a threaded portion 22a for screwing with the shaft portion 30 is provided in the center hole of the lower head 22 . The shaft portion 30 may pass through the head portion 20 from the upper side to the lower side of the head portion 20 and the rear end may be located inside the valve housing 10. [ An opening / closing part 40 is coupled to the rear end of the shaft part 30, and a handle part 50 can be coupled to the tip end of the shaft part 30. And a screw thread 31 for threaded engagement with the lower head 22 may be formed on the outer circumferential surface of the shaft 30. [ The opening and closing part 40 includes a disk shaped end part 41 and a tube shaped body 42 and a bellows 43 may be included between the end part 41 and the body 42.

The main feature of the vacuum valve 1 according to the present invention is that a lock groove 110 is formed in the handle portion 50, a lock pin 120 is coupled to the head portion 20, The lock pin 120 is inserted into the lock groove 110 to limit the rotation of the handle portion 50. [

2, the lock groove 110 may be recessed in the bottom surface of the handle portion 50, and the lock groove 110 may be formed on the bottom surface of the handle portion 50, And may be located at a position away from the center (C). Here, the bottom surface of the handle portion 50 refers to the bottom surface of the handle portion 50 that faces the upper surface of the upper head 21.

4 is a view showing the lock groove and the lock pin of the vacuum valve shown in FIG. 1

As shown in Figures 3 and 4, in one embodiment, the locking pin 120 is coupled to the head portion 20. And the lock pin 120 may be disposed long in a direction parallel to the axial direction of the shaft portion 30. [ That is, the lock pin 120 can be coupled to the lower head 220 through the upper head 21 so as to face the bottom surface of the handle portion 50. And the lock pin 120 can be coupled to the head portion 20 The lock pin 120 is coupled to the lower head 22 so as to be able to move up and down through the upper head 21. The lock pin 120 is coupled to the lower head 22 in a direction parallel to the axial direction of the shaft 30. Specifically, can do.

When the worker rotates the handle portion 50 to close the vacuum valve 1, the handle portion 50 moves downward as the shaft portion 30 moves downward, and when the lock groove 110 is locked And comes close to the pin 120. The locking pin 120 is inserted into the locking groove 110 to restrict the rotation of the handle portion 50 when the opening and closing portion 40 is in contact with the valve seat 13 do.

Thereby, when the vacuum valve 1 is closed, the handle portion 50 is locked so as not to move smoothly. The lock groove 110 and the lock pin 120 are positioned such that the lock groove 110 and the lock pin 120 are aligned with respect to the circumferential direction when the opening and closing part 40 comes into contact with the valve seat 13 do.

The push button unit 140 serves to physically pull the lock pin 120 out of the lock groove 110 in cooperation with the lock pin 120. The push button unit 140 is connected to the lock pin 120 through the connection unit 150 and interlocks with the lock pin 120. The connection portion 150 may be formed in the form of a plate having two holes, and the lock pin 120 and the push button portion 140 may be coupled to the two holes, respectively. At this time, a flange-shaped latching portion may be provided around the lock pin 120 so as to be caught in the hole at the lower side of the connection portion 150, and the push button portion 140 A stepped region can be formed.

Meanwhile, the push button unit 140 may be movably coupled to the head unit 20 in a direction parallel to the axial direction of the shaft 30. Specifically, the push button portion 140 can be coupled to the lower head 22 so as to flow up and down through the upper head 21. A second elastic member 160 may be interposed between the push button portion 140 and the head portion 20 to provide a restoring force in a direction parallel to the axial direction of the shaft portion 30. [ The upper end of the push button unit 140 may be exposed to the outside of the upper head 21 so as to accommodate the pushing operation of the operator.

When the operator pushes the push button portion 140 while the vacuum valve 1 is closed and locked, that is, the lock pin 120 is inserted into the lock groove 110, the push button portion 140 pushes the second And overcomes the restoring force of the elastic member 160 and moves downward. As the push button portion 140 moves downward, the lock pin 120 connected to the connection portion 150 also moves downward and is released from the lock groove 110.

When the lock pin 120 is disengaged from the lock groove 110, the operator can turn the handle portion 50 to open the vacuum valve 1.

Fig. 5 is a view showing an operating state of the lock pin and the opening / closing informing part in a state in which the vacuum valve is closed, and Fig. 6 is a view showing an elastic member provided in the opening / closing informing part and the opening / closing informing part.

5 and 6, the opening / closing notification unit 170 is configured to rotate in conjunction with the rotation of the handle unit 50, thereby informing the operator of whether the vacuum valve 1 is currently open or closed, .

The opening / closing notification unit 170 may include a body 172 including a rotation axis 171 and a rotation induction unit 173. [

The rotary shaft 171 is disposed on the head portion 20 so as to be parallel to the axial center C and spaced apart from the axial center C of the shaft portion 30. [ Specifically, the rotary shaft 171 may be formed between the upper head 21 and the lower head 22. The upper end of the rotary shaft 171 may be coupled to the upper head 21 and the lower end of the rotary shaft 171 Can be coupled to the lower head 22.

The body 172 may be embodied as a block that is elongated in a direction different from the one side direction from the rotation axis 171 as a starting point. The body 172 may include a region 172a marked with a " close " mark and a region 172b marked with an " open " mark separated from the rotational axis 171. The outer surface of the region 172a marked with the "closed" mark and the region 172b marked with the "open" mark can be formed to correspond to the curvature of the outer peripheral surface of the head portion 200. On the other hand, 172 may be located in the slot 21a.

The rotation inducing portion 173 may protrude from the body 172 with the rotation axis 171 as a starting point. The rotation inducing portion 173 serves to guide the body 172 to rotate about the rotation axis 171 in conjunction with the rotation of the handle portion 50. [ 2 and 5) protruding from the bottom surface of the handle 50 may be formed on the bottom surface of the handle 50 so as to be spaced apart from the rotation center C of the handle 50, And the rotation inducing portion 173 are formed so as to contact the rotation inducing pin 180.

Accordingly, the size and shape of the rotation inducing portion 173 can be determined in consideration of the position of the rotation inducing fin 180 so that the rotation inducing pin 173 can contact the rotation inducing pin 180. As shown in the figure, the rotation inducing portion 173 may be formed in a wedge shape which is formed to be pointed toward the rotation center C.

5, when the handle portion 50 rotates and the opening / closing portion 40 comes into contact with the valve seat 13, the lock pin 120 is inserted into the lock groove 110 and, at the same time, 180 pushes the rotation inducing portion 173 clockwise (or counterclockwise). When the rotation inducing portion 173 is pushed, the body 172 rotates counterclockwise (or clockwise) with respect to the rotation axis 171 so that the region 172a marked with the "closed" mark is exposed outside the head portion 20 . The operator can confirm visually that the vacuum valve 1 is in the closed state by visually checking the area 172a in which the closed "

6, a second elastic member 190, such as a torsion spring, may be fitted to the rotation shaft 171 located below the body 172 of the opening / closing notification part 170. As shown in FIG. The second elastic member 190 includes both end portions 191 and 192 located at predetermined angles and is bent upward at each of the end portions 191 and 192 to be engaged with the body 172 of the opening / (191a, 192a) may be formed.

When the lock pin 120 is released from the lock groove 110 in accordance with the rotation of the handle 50, the second elastic member 190 moves to the original position by elasticity to indicate the opening of the turn guide portion 173 .

FIG. 7 is a view showing an opening / closing informing part restored to its original position by the elastic member in a state of being unlocked in the state of FIG.

7, the second elastic member 190 serves to provide a restoring force such that the region 172a marked with the " CLOSED " mark rotates to protrude out of the head portion 20 and returns to its original position .

Specifically, when the operator pushes the push button portion 140 and the lock pin 120 is released from the lock groove 110, the opening / closing notification portion 170 is rotated clockwise (or counterclockwise) by the restoring force of the second elastic member 190 And the area 172b marked with the " open " mark may be exposed to the outside of the head part 20. [ The operator can confirm visually that the vacuum valve 1 is in the currently opened state by visually checking the area 172b in which the " open "

The present invention includes an opening / closing notification part 170 interlocked with the rotation of the handle part 50 in addition to the mark of the handle part 50, It is possible to more accurately check the state of the vacuum valve 1 by providing the lock groove 110 and the lock pin 120 for restricting the rotation.

As described above, the vacuum valve according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Vacuum valve
10: Valve housing
11: Inlet
12: Outlet
13: Valve seat
20: head portion
21: Upper head
21a: Slot
22: Lower head
22a:
30: Shaft
40:
50:
110: Locking groove
120: Lock pin
140: push button part
150:
160: first elastic member
170: opening / closing notification section
171:
172: Body
173:
180:
190: second elastic member

Claims (16)

A valve seat having a valve seat formed therein, a head portion coupled to an upper portion of the valve housing, a shaft portion linearly moved by being screwed to the head portion, an opening / closing portion coupled to a front end of the shaft portion to abut against the valve seat, And a handle portion that engages with the handle portion,
Wherein the handle portion is formed with a lock groove, the lock portion is coupled to the head portion, the lock pin is inserted into the lock groove when the opening / closing portion abuts against the valve seat to restrict rotation of the handle portion, Wherein the lock pin is recessed in a direction parallel to the axial direction of the shaft portion,
Wherein the lock groove and the lock pin are aligned with respect to a circumferential direction when the opening / closing portion is in contact with the valve seat, and the lock pin movably engages with the head portion in a direction parallel to the axial direction of the shaft portion. A push button portion movably coupled in a direction parallel to the axial direction of the shaft portion and spaced apart from the lock pin, and a connection portion connecting the lock pin and the push button portion to interlock the push pin portion and the lock pin, Wherein a first elastic member is provided between the push button portion and the head portion to provide a restoring force in a direction parallel to the axial direction of the shaft portion between the push button portion and the head portion, A body including a rotary shaft formed on the head portion and spaced apart from a shaft center of the shaft portion and being parallel to the shaft center and having a "closed" mark and an "open" mark separated from the rotary shaft, And a rotation inducing unit protruding from a shaft center of the shaft,
And a rotation inducing pin formed on the bottom surface of the handle portion so as to protrude from the rotation center of the handle portion and protrude toward the head portion to contact the rotation inducing portion, And the body is rotated in one direction with respect to the rotation axis by pushing the rotation inducing portion. delete delete delete delete delete delete delete delete delete delete The method according to claim 1,
Wherein a region marked with a " close " mark in the body of the opening / closing informing portion protrudes beyond the head portion when the opening / closing portion comes into contact with the valve seat. The method according to claim 1,
Wherein the head portion includes an upper head and a lower head disposed below the upper head, and the opening / closing notification portion is disposed between the upper head and the lower head. 14. The method of claim 13,
Wherein the upper head has a slot in which the opening / closing informing portion is located. The method according to claim 1,
And the lock pin is inserted into the lock groove of the handle portion by the elasticity of the first elastic member at a position where the opening / closing portion abuts on the valve seat by the rotation of the handle portion. 16. The method of claim 15,
Wherein when the push button portion is depressed, the lock is released, and the rotary guide pin is interlocked with the rotary guide pin so that the rotary guide pin is separated from the rotary guide portion to be opened.

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