KR101238422B1

KR101238422B1 - Guide structure of Knife gate valve

Info

Publication number: KR101238422B1
Application number: KR1020100138740A
Authority: KR
Inventors: 김성현
Original assignee: (주)현우산업
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2013-02-28
Also published as: KR20120076953A

Abstract

The present invention relates to a guide structure of a knife gate valve that allows the disk to move in a state supported by the spindle shaft and the guide shaft when moving up and down, thereby enabling accurate movement in the vertical direction, thereby increasing the sealing force to prevent leakage. In detail, the guide is configured to form a triangular arrangement of the spindle groove and the three slide holes, vertically coupled to the body and the upper bracket three guide shafts sliding to the slide hole to form a triangular arrangement around the spindle axis, and the handle When the spindle axis is turned, the spindle moves in a helical coupling along the spindle axis, and the guide is supported by the guide shaft when the slide slides along the guide axis, so that the precise movement is possible. By installing the guide shaft around the spindle shaft, there is an effect to prevent the shaking or tilting to one side through the sliding movement to the guide shaft when the disk is moved up and down.

Description

Guide structure of Knife gate valve

The present invention relates to a guide structure of a knife gate valve, and in particular, when the disk is moved up and down to the state supported by the spindle shaft and the guide shaft, it is possible to precisely move in the vertical direction, so that the sealing force is increased so that no leakage occurs. A guide structure of a knife gate valve.

In general, the knife gate valve is used to transfer or block the fluid, pulp, sludge, and cement by controlling or opening the flow path of the pipe line, and the seat structure is made of metal sheet and valve body seat processed by Teflon or valve body seat. It is divided into RESIENTENT SEAT structure with rubber packing inserted.

Specifically, for example, the knife gate valve disclosed in Korean Patent Laid-Open Publication No. 94-701108 is a metal sheet, and the metal sheet of the body and the metal disk are in contact with each other to seal, so it is difficult to maintain confidentiality due to the contact between metal and metal. The leakage occurred and the seat leakage allowance was decided according to the standard of MSS-SP 81. It is not suitable for the piping line requiring perfect leakage shutoff. There is a knife gate valve having a rubber sheet inside the valve body as in Patent Publication No. 10-0264259.

As described above, in order to move the disk of the knife gate valve up and down to open and close the passage, it is connected to one screw shaft and moves up and down. When the disk is biased to one side, bending deformation occurs on the screw shaft or wear on the spiral. There was a problem that the phenomenon occurs.

Accordingly, the present invention has been devised in view of the problems of the prior art as described above, and the guide shaft is installed around the spindle shaft to prevent the occurrence of shaking or tilting to one side through sliding movement on the guide shaft when the disk is moved up and down. The purpose is to provide a guide structure for the valve.

In addition, another object of the present invention is to make the spindle axis and the guide axis triangular arrangement to disperse the stress acting on the disk movement and to prevent the wear and bending of the spindle axis.

In addition, another object of the present invention is that the spindle is formed in a rectangular shape is inserted into the groove of the guide when the spindle shaft is rotated to prevent the rotation to prevent the loss of rotational force and to perform the precise movement operation of the disk according to the rotation There is.

In order to achieve the above object, the present invention is a vertically coupled between the body and the upper bracket coupled to the handle is a guide coupled to the disk and the spindle to open and close the passage through which the fluid passes in the horizontal direction, the handle In the knife gate valve configured to move the disk up and down with the guide along the rotating spindle axis by turning the rotation, the center of the guide to form a spindle groove in communication with the shaft hole through which the spindle axis penetrates, the spindle groove is the spindle axis and the spiral Formed to be larger than the diameter of the shaft hole so that the coupled spindle is inserted, and constitutes a triangular arrangement of the three slide holes around the spindle groove communicating with the shaft hole of the guide, the triangular arrangement around the spindle axis through the shaft hole The three guide shafts that slide into the slide holes Vertically coupled to the body and the upper bracket, when the handle is rotated when the spindle axis is rotated, the spindle moves in a helical engagement along the spindle axis, and the guide is supported by the guide shaft when sliding along the guide axis so that the guide shaft can be configured to be accurate. A guide structure of a knife gate valve is provided.

As described above, the present invention has an effect of installing a guide shaft around the spindle shaft so as not to shake or tilt to one side through the sliding movement on the guide shaft when the disk is moved up and down.

In addition, the spindle shaft and the guide shaft are arranged in a triangular arrangement to disperse the stress acting on the disk movement and to prevent the wear and bending of the spindle shaft.

In addition, the spindle is formed in a rectangular shape is fitted to the groove of the guide when the spindle shaft is rotated to prevent rotation to prevent the loss of the rotation force and to effect the accurate movement operation of the disk according to the rotation.

1 is a front view of a knife gate valve according to the present invention,
2 is a longitudinal sectional view of a knife gate valve according to the present invention;
3 is an exploded perspective view of a guide structure of a knife gate valve according to the present invention;
Figure 4 is a combined perspective view of the guide structure of the knife gate valve according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

As shown in Figures 1 to 4, the guide structure of the knife gate valve of the present invention has a passage 11 through which the fluid passes in the horizontal direction is formed in the lower portion of the body (10).

At this time, the body 10 is composed of a pair of bisected thickness in the longitudinal direction, when the pair is coupled to each other in a manner to combine the flange and the disk passage 12 is formed in the upper center.

In addition, an extended end 13 horizontally extending toward the upper one side of the body 10 is integrally formed.

On the other hand, the disk 20 for opening and closing the passage 11 of the body 10 is configured, the disk 20 can be manufactured in various forms in the present invention is configured in a rectangular shape of one end is semi-circular form do.

Such, the upper end of the disk 20 is coupled to the guide 30 coupled to the spindle 31 using fastening means such as bolts.

At this time, in the center of the guide 30 to form a spindle groove 32 in communication with the shaft hole (32a) through which the spindle shaft 50 passes, the spindle groove 32 is the spindle spirally coupled to the spindle shaft (50) The slide hole 33 is formed to be larger than the diameter of the shaft hole 32a so that the 31 is inserted, and the three slide holes 33 are triangulated with respect to the spindle groove 32 communicating with the shaft hole 32a of the guide 30. Configure to achieve.

That is, the shaft hole 32a is formed through the guide 30, and the spindle groove 32 is formed to have a large diameter at a portion of the lower side of the shaft hole 32a, and the spiral hole 32b is coupled to the shaft hole 32a. do.

That is, the inner surface of the spindle groove 32 and the slide hole 33 may be configured by inserting a bushing (B) to minimize friction and wear.

In addition, the edge shape of the spindle 31 is formed in a square shape, and the spindle groove 32 into which the spindle 31 is inserted and coupled is formed in a square shape, and the handle 40 is turned to rotate the spindle shaft 50. The spindle 31 is locked to the spindle groove 32 when this rotation is configured so as not to freely rotate.

On the other hand, the body 10 and the handle 40 is vertically coupled between the upper bracket 41 is coupled.

At this time, three guide shafts (60) slidingly coupled to the slide hole (33) to form a triangular arrangement around the spindle shaft (50) passing through the shaft hole (32a) to the body (10) and the upper bracket (41). Make up the vertical coupling.

Here, the lower end of the spindle shaft 50 and the guide shaft 60 is fixed to the extension end 13 of the body 10, the spindle shaft 50 is installed to rotate, the guide shaft 60 is fixedly coupled do.

And, the handle 40 and the spindle shaft 50 is installed in a right angle arrangement is configured to rotate the spindle shaft 50 when rotating the handle 40 by the gear coupling in a bevel gear system.

As a result, when the handle 40 is turned, the disk 20 moves up and down along with the guide 30 along the rotating spindle shaft 50.

The spindle 31 having a rectangular shape of the edge is inserted into and coupled to the spindle groove 32 of the guide 30 to form a guide structure of the knife gate valve 100.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, the knife gate valve 100 first rotates the handle 40 in order to open in the state in which the passage 11 is closed.

As such, when the handle 40 is rotated, the spindle shaft 50 is rotated by receiving the rotational force by the bevel gear, which is not indicated by the drawing number.

This, the rotating spindle shaft 50 and spirally coupled spindle 31 is moved up along the spiral of the spindle shaft (50).

At this time, the spindle 31 is formed in a rectangular shape is inserted into the spindle groove 32 of the guide 30 is not free rotation, the spindle 31 is bushing (B) in the spindle groove (32) It will be preferable to insert the first insert into the inside of the bushing (B).

In this way, the rotation of the spindle shaft 50 is helically fastened so that the guide 30 moves together with the movement of the spindle 31 to open the passage 11 while the disk 20 moves upward.

In addition, the guide 30 moving upwardly slides upward in a state supported by the guide shaft 60.

At this time, shaking does not occur when the guide 30 is supported by the guide 30 to move along with the spindle 31, and the disc 20 is supported by the guide shaft 60 even when the disc 20 is biased to one side. Impact is not transmitted to the spindle shaft 50 prevents bending deformation and wear of the spiral.

In addition, the guide 30 is supported by the guide shaft 60 has the advantage that the precise movement is possible, even if the external force caused by bending or impact has the advantage that can be dispersed in the guide shaft 60.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

10 body 11 passage
12: disk path 13: extension end
20: Disc 30: Guide
31: spindle 32: spindle groove
32a: shaft hole 33: slide hole
40: handle 41: upper bracket
50: spindle axis 60: guide axis
B: Bushing 100: Knife Gate Valve

Claims

The disk 20 and the guide 30 coupled to the spindle 20 to open and close the passage 11 through which the fluid passes in the horizontal direction to the lower portion of the body 10 are coupled to the body 10 and the handle 40. In the knife gate valve vertically coupled between the upper bracket 41, the disk 20 is moved up and down with the guide 30 along the rotating spindle shaft 50 when the handle 40 is rotated,
In the center of the guide 30 to form a spindle groove 32 in communication with the shaft hole 32a through which the spindle shaft 50 passes, the spindle groove 32 is a spindle 31 which is spirally coupled to the spindle shaft 50. ) Is formed larger than the diameter of the shaft hole (32a) so that the insertion coupling,
The triangular arrangement of the three slide holes 33 around the spindle groove 32 in communication with the shaft hole 32a of the guide 30 is configured,
Vertically coupling three guide shafts 60 sliding to the slide hole 33 to form a triangular arrangement around the spindle shaft 50 passing through the shaft hole 32a to the body 10 and the upper bracket 41. and,
When the spindle 40 rotates when the handle 40 is rotated, the spindle 31 moves in a helical coupling along the spindle axis 50 and the guide 30 slides along the guide shaft 60 when the guide shaft 60 slides. Guide structure of the knife gate valve, characterized in that configured to enable accurate movement is supported by the guide (30).

The method of claim 1, wherein the spindle 31 is formed in a rectangular shape, and the spindle 31 is inserted into the spindle 31 is inserted into a quadrangular shape,
Guide structure of a knife gate valve, characterized in that the spindle (31) is locked to the spindle groove (32) so that the handle (40) rotates when the spindle shaft (50) rotates.