KR101565019B1 - Multiple sealing Butterfly valve - Google Patents

Abstract

The present invention relates to a multiple-sealing butterfly valve. More specifically, a first body sheet and a second body sheet are installed between a protrusion unit / a pushing sheet and a disc sheet in the butterfly valve to block water. The first and second body sheets are formed to be bent on both sides of a valve, thereby enabling bidirectional water stop and improving water stop performance using a water pressure. Even if the butterfly valve is compressed by the application of an overload caused by a water pressure and excessive initial setting of the first and second body sheets, the first and second body sheets and components in the valve, which are in contact with the first and second bodies to correspond to the same, are formed in the shape of being bent at the same radius for surface contact. Therefore, the multiple-sealing butterfly valve can prevent damage.

Description

Multiple sealing Butterfly valve < RTI ID = 0.0 >

The present invention relates to a butterfly valve capable of bi-directional exponentiation and multiple sealing while enhancing exponential performance using water pressure through a body seat.

Generally, a butterfly valve is a valve that is configured to open and close a flow path formed inside a valve body by a disc-shaped disk. In general, the butterfly valve is provided to open and close a flow path by rotating a disk by an eccentric shaft, It is widely used not only for fluids but also for supplying fluids such as high-temperature, high-pressure water, steam or gas.

Such a butterfly valve is divided into various types and forms according to the material of the valve seat coupled to the valve body, the shape of the disk, or the position where the eccentric shaft is coupled to the disk. The tube center of the valve body and the center of the disk or the eccentric shaft are set eccentrically.

The butterfly valve of the conventional multi-eccentric structure includes a disk having a circular cross-sectional shape which is rotatably installed inside the valve body to open and close an internal passage of the valve, And an eccentric shaft for rotational driving is coupled to one surface of the disk.

In this configuration, a primary eccentricity X is formed in which the center of the disk is displaced from the center of the tube body of the valve body, a secondary eccentricity in which the center of the eccentric shaft is offset from the center of the body sheet is formed, The third elongated eccentricity in which the extension lines of both end faces where the sheets are mutually contacted and the extension line of the crowns of the valve body are shifted is formed.

This multi-eccentric butterfly valve is advantageous in that the opening and closing of the disk is smooth and the airtight effect is effectively enhanced in the unidirectional index, as compared with the double eccentric structure in which the first eccentricity and the second- And had disadvantages.

Therefore, in order to solve such a problem, the development of a butterfly valve that facilitates a bi-directional index and multiple sealing is in the spotlight.

Korean Unexamined Patent Publication (No. 10-2011-0098129) 2011. 09. 01.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic recording medium having a first and a second body sheet positioned between a disc seat and a protruding portion, The first and second body sheets are in contact with the first and second body sheets at the time of initial setting of the first and second body sheets or when an undue load is applied to the first and second bodies due to excessive water pressure applied to the disk, The first and second body seats can be prevented from being damaged and the components in the valve (ex: depressed portion) can be prevented from being damaged. Seats, etc.) and to enable a bi-directional index in the body through the shape of the first and second body sheets as well.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above problems, the present invention provides a butterfly valve comprising a body (10) for forming a flow path therein and a disk (20) for opening and closing a flow path in the body (10) A disk sheet (30) provided so as to be able to move forward and backward on the outer periphery of the disk (20) and having an outer periphery inclined; A protrusion 40 protruding from the inner periphery of the body 10 to face the disc seat 30; A pressing sheet 50 fastened to one surface of the protrusion 40; One end is fixed between the protruding portion 40 and the pressing sheet 50 and the other end is fixed to the protruding portion 40 and the pressing sheet 50 in the spacing space S between the disc sheet 30 and the protruding portion 40. [ And is in contact with the disc sheet 30 so as to expose the space S when the water pressure is generated, expands in both directions, and the other end pushes the disc sheet 30 in a resilient manner, Body sheets (60, 61); The first and second body sheets 60 and 61 are provided respectively at contact portions between the pressing sheet 50 and the first body sheet 60 and at contact portions between the projecting portion 40 and the pressing sheet 50, First and second sealing members 71 and 72 for allowing the first-order index to be a second-order index; And the first and second body sheets 60 and 61 are subjected to an excessive load from the disk 20 which is pushed to the left and right by the water pressure or by the excessive operation of the disk sheet 30 at the initial setting When the body sheets 60 and 61 are pressed toward the body 10, the contact between the opposite side edge portions of the lower end of the projecting portion 40 and the second body sheet 61 and the opposite side edge portions of the lower end portions of the pressing sheet 50 The first and second body sheets 60 and 61 are prevented from being damaged by the contact between the first body sheet 60 and the first body sheet 60 when the first and second body sheets 60 and 60 are folded at the same radius R .

INDUSTRIAL APPLICABILITY As described above, the present invention has the effect of enabling bidirectional indices in the valve.

Also, in the case of the first and second body sheets installed for the bidirectional index, even when a problem that excessive load is transmitted through the movement of the disk due to the initial unreasonable setting and the water pressure in the valve, The second body sheet is broken or damaged due to the surface contact of the contact portion due to the fact that the contact portions of the second body sheet and the first and second body sheets are in contact with each other at the same contact radius Is not generated.

In addition, the present invention has the effect of increasing the exponential efficiency by enabling the second order index through the first and second sealing members in addition to the first order index by the first and second body sheets.

Further, according to the present invention, the first and second sealing members cut off the excessive load applied through the water pressure to the body of the valve, thereby preventing the deformation of the components (e.g., protrusions, pressing sheets, etc.) There is an effect that can be done.

In addition, according to the present invention, the other ends of the first and second body sheets are each bent in both directions of the valve, and the index performance using the water pressure is improved.

Further, the present invention has an effect that the structure is simple, and productivity and workability are improved.

In addition, according to the present invention, soft sheets are used together with the first and second bodysts to provide a multi-sealing structure, thereby further improving the indexing force.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exterior side view of an embodiment of a multi-sealing butterfly valve in accordance with the present invention.
2 is an internal cross-sectional view of an embodiment of a multiple sealing butterfly valve in accordance with the present invention.
3 is an operational view of an embodiment showing the initial position adjustment of the first and second body sheets in the multi-sealing butterfly valve according to the present invention.
FIG. 4 is an operational view of an embodiment showing the operation of first and second body sheets according to the movement of a disk by water pressure in a multi-sealing butterfly valve according to the present invention; FIG.
5 is an enlarged view of a portion A in Fig.
6 is an operational view of an embodiment showing a further installed soft seat in a multiple sealing butterfly valve according to the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The butterfly valve includes a body 10 defining a passage therein and a disk 20 opening and closing a passage in the body 10, A disk sheet (30) installed so as to be able to move forward and backward on an outer periphery, and having an outer periphery inclined; A protrusion 40 protruding from the inner periphery of the body 10 to face the disc seat 30; A pressing sheet 50 fastened to one surface of the protrusion 40; One end is fixed between the protruding portion 40 and the pressing sheet 50 and the other end is fixed to the protruding portion 40 and the pressing sheet 50 in the spacing space S between the disc sheet 30 and the protruding portion 40. [ And is in contact with the disc sheet 30 so as to expose the space S when the water pressure is generated, expands in both directions, and the other end pushes the disc sheet 30 in a resilient manner, Body sheets (60, 61); The first and second body sheets 60 and 61 are provided respectively at contact portions between the pressing sheet 50 and the first body sheet 60 and at contact portions between the projecting portion 40 and the pressing sheet 50, First and second sealing members 71 and 72 for allowing the first-order index to be a second-order index; And the first and second body sheets 60 and 61 are subjected to an excessive load from the disk 20 which is pushed to the left and right by the water pressure or by the excessive operation of the disk sheet 30 at the initial setting When the body sheets 60 and 61 are pressed toward the body 10, the contact between the opposite side edge portions of the lower end of the projecting portion 40 and the second body sheet 61 and the opposite side edge portions of the lower end portions of the pressing sheet 50 The first and second body sheets 60 and 61 are prevented from being damaged by the contact between the first body sheet 60 and the first body sheet 60 when the first and second body sheets 60 and 60 are folded at the same radius R .

The first and second body sheets 60 and 61 are formed with protrusions 62 protruding outwardly at opposite ends of the first and second body sheets 60 and 61 that are sandwiched between the protrusions 40 and the pressing sheet 50, When the pressing sheet (50) is pressed by the pressing sheet (50), mutual fixing is ensured.

Hereinafter, a multi-sealing butterfly valve according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. FIG.

As shown, the multiple sealing butterfly valve of the present invention includes a disk seat 30, a projection 40, a pressing sheet 50, first and second body sheets 60 and 61, and a soft seat 90 do.

The multi-sealing butterfly valve includes a tubular body 10 formed in a longitudinal direction to form a flow path through which fluid flows, an eccentric shaft 11 rotatably installed in the body 10, And a disc 20 coupled to the eccentric shaft 11 and rotated in the body 10 to open or close the flow path in the body 10. [

The disk sheet 30 is mounted on the outer circumferential edge of the step 21 of the disk 20 described above and has a cross section having the same cross section as' (20).

The bent lower end of the disc seat 30 is coupled to the disc 20 by the fastening means B and the disc seat 30 is fastened and fastened by the fastening means B, Has a structure capable of moving forward and backward in a state of being coupled to the outer periphery of the disk 20.

In addition, the outer periphery has a tilted structure toward one direction so as to be in contact with the first and second body sheets 60 and 61 to be described later.

The structure of the disc sheet 30 is for setting the initial position of the first and second body sheets 60 and 61 to be described later. The outer periphery of the disc sheet 30 has a structure inclined as described above When the disc sheet 30 is gradually moved backward, the right portion located at a higher position in the disc seat 30 is moved to the first and second body sheets 60 and 61 The first and second body sheets 60 and 61 are gradually pressed toward the body 10 while being in contact with each other and the disk sheet 30 is moved in the reverse direction in this state, The first and second body sheets 60 and 61 are separated from the first and second body sheets 60 and 61 in contact with the first and second body sheets 60 and 61, respectively.

Accordingly, in the present invention, the disc sheet 30 is moved forward or backward to a preset position, and the disc sheet 30 is brought into contact with the first and second body sheets 60 and 61 And the like.

The disc seat 30 is provided with a plurality of grooves at a portion contacting with the disc 20 and a third sealing member 73 is provided in the groove, So that leakage is prevented from occurring through the contact surface with the water supply pipe.

The protrusions 40 protrude from the inner circumference of the body 10 and protrude toward the disc sheet 30 (or the outer periphery of the disc 20).

The pressing sheet 50 is fixed to one surface of the protruding portion 40 in a disc shape and is connected to the protruding portion 40 through another fastening means (e.g., bolts or the like) different from the above- This pressing sheet 50 is used for fixing the first and second body sheets 60 and 61 between the protruding portion 40 and the pressing sheet 50. The pressing means 50 is provided with the fixing means B, So that one end of the first and second body sheets 60 and 61 can be securely fixed between the pressing sheet 50 and the protruding portion 40. Of course, according to various embodiments of the user, a plurality of fastening means B of the disk sheet 30 connected to the disk 20 may be used to connect the forward (left) and reverse (right) fastening means B It can also be used individually. The diameter of the inner circumferential surface of the pressing sheet 50 fastened in this way is relatively smaller than the diameter of the protruding portion 40 so that the disc sheet 30 positioned at the inner periphery of the protruding portion 40 and the pressing sheet 50 The protruding portion 40 and the inner circumferential edge of the pressing sheet 50 come into contact with the outer circumferential edge of the disc sheet 30 at the same time and are spaced apart from each other at the same time when the disc sheet 30 is moved forward and backward .

Of course, since the first and second body sheets 60 and 61 are fixed through the fastening means B and the pressing sheet 50, even when the first and second body sheets 60 and 61 are broken, 1, 2 body sheets 60, 61 can be replaced.

In order to prevent leakage between the pressing portion of the pressing sheet 50 and the first body sheet 60 and between the pressing portion of the pressing body 50 and the pressing portion of the first body 50, The first sealing member 71 is provided in the pressing sheet 50 at the contacting portion of the sheet 60 and the first sealing member 71 is provided at the contact portion between the protruding portion 40 and the pressing sheet 50, The first and second sealing members 71 and 72 are disposed on the first and second body sheets 60 and 61 after the water intermittence through the first and second body sheets 60 and 61, So that more reliable watertightness can be achieved. At this time, the first and second sealing members 71 and 72 are made of a packing material such as a rubber material or a sealing material.

The first and second body sheets 60 and 61 are configured to include the pushing sheet 50 and the protrusion 40 described above when the disc 20 is rotated to seal the inside of the body 10, One end is inserted and fixed between the pressing sheet 50 and the protruding portion 40 and the other end is bent in the spacing space S so as to be in contact with the disc sheet 30 So that leakage can be prevented from occurring in the spacing space S so that a reliable index can be obtained.

The first and second body sheets 60 and 61 have the same shape and are symmetrical without being opposed to each other. The first body sheet 60 has one end pressed against the pressing sheet 50, 40 and the other end is bent toward the pressing sheet 50 in the spacing space S so as to surround the inner periphery of the pressing sheet 50, The outer periphery of the disk sheet 30 is pushed out to the outside by an elastic force and comes into contact and contact with each other.

The second body sheet 61 has the same structure as that of the first body sheet 60 but has a different bending direction. The second body sheet 61 has one end connected to the pressing sheet 50, And the other end is bent toward the projecting portion 40 in the spacing space S so as to have the shape of wrapping the projecting portion 40, The outer periphery of the disk sheet 30 is pushed out to the outside by the elastic force like the one body sheet 60 and comes into contact and contact with each other. In other words, the other end of the first body sheet 60 is bent in the left direction of the disk 20, and the other end of the second body sheet 61 is bent in the right direction of the disk 20.

Accordingly, when the water pressure is generated from the left side of the disc 20, the water pressure acts as a reliable index to prevent leakage of water to the second body sheet 61 by the first body sheet 60, 50 and the first body sheet 60, the first body sheet 60 is pressed against the disc sheet 30 more strongly by water pressure to prevent water leakage, and the first body sheet 60 and the disc sheet When the first body sheet 60 is to be introduced into the first body sheet 60, the first body sheet 60 pushes the disc sheet 30 by elastic force at the time of initial setting, A portion of the folded portion of the first body sheet 60 is further bent while being in contact with the disc sheet 30 so that the other end portion (end portion) of the first body sheet 60, which is apart from the pressing sheet 50, While being in contact with the inner periphery of the sheet 50, Something that will prevent leaks. This is because the second body sheet 61 operates in the same manner as the first body sheet 60 described above even when a water pressure is generated on the right side of the disk 20, thereby preventing water leakage.

The first and second body sheets 60 and 61 are pressed against the first and second body sheets 60 and 61 by moving the disc sheet 30 back and forth so that the first body sheet 60 and the second body sheet 61 first set their positions The first and second body sheets 60 and 61 are brought into line contact with the inner peripheral edge of the pressing sheet 50 or the projection 40 and the other ends are broken or bent, The first and second body sheets 60 and 61 are prevented from being damaged or the disk 20 is moved to the left or right due to strong water pressure during driving of the valve and left or right of the disk 20, And by exerting an excessive load on the first and second body sheets 60 and 61 through the disc sheet 30 in contact with the first and second body sheets 60 and 61, The other ends of the sheets 60 and 61 come into line contact with the inner periphery of the pressing sheet 50 or the projecting portion 40, The problems will occur.

Therefore, in the present invention, the protruding portion 40 to which the other ends of the first and second body sheets 60 and 61 are to be contacted and the portion to be contacted with the pushing sheet 50, and the contact between the protruding portion 40 and the pushing sheet 50 The other end contact portions of the first and second body sheets 60 and 61 are folded with the same radius (diameter R) so that a portion of the end portions of the first and second body sheets 60 and 61 is projected The first body sheet 60 corresponds to the pressing sheet 50 while the second body sheet 61 corresponds to the projecting portion 40 while the contact portions are not in line contact with each other So that the first and second body sheets 60 and 61 are prevented from being broken or damaged and being damaged.

The first and second body sheets 60 and 61 are provided at one end of the first and second body sheets 60 and 61 that are sandwiched between the protrusions 40 and the pressings in order to more securely fix the first and second body sheets 60 and 61 to each other. The first and second body sheets 60 and 61 are pressed against the pressing sheet 50 and the protrusions 62 and the protrusions 62 are formed on the protrusions 62. As the protrusions 62 are formed, The protruding portion 62 pressed between the pressing sheet 50 and the protruding portion 40 is expanded while the first and second sealing members 50 and 40 are pressed and fixed to the protruding portion 40 by the pressing sheet 50, So that the contact portions of the contact portions 71 and 72 are more reliably contacted with each other and can be joined together.

In addition, in the present invention, in addition to the bidirectional indexes of the first and second body sheets 60 and 61, the index of elasticity of the material (ex: rubber, etc.) A sheet 90 may be further provided.

The soft sheet 90 is formed on the outer circumferential edge of the inclined disk sheet 30 facing the pressing sheet 50 when the passage is opened or closed.

To this end, the disc seat 30 is provided with an insertion hole into which a soft sheet 90 having a ring-shaped ring shape is correspondingly inserted, and a soft sheet 90 inserted into the insertion hole in a ring shape So that a portion thereof protrudes toward the pressing sheet (50) and comes into contact with the pressing sheet (50).

Of course, depending on the embodiment of the user, such soft sheets 90 may be spaced apart from each other as well as single, so that a plurality or a plurality of spaced apart soft sheets may be used.

Accordingly, in the present invention, the disc sheet 30 is moved forward or backward to a preset position, and the disc sheet 30 is brought into contact with the first and second body sheets 60 and 61 The soft sheet 90 (90) is also pressed against the pressing sheet 50 to adjust the degree to which the pressing is performed (when the disc sheet 30 is in the backward direction), as described above, The soft sheet 90 is further pressed onto the pressing sheet 50 and the soft sheet 90 is pressed against the pressing sheet 50 when the disc sheet 30 is advanced (moved to the right) The bi-directional indices between the pressing sheet 50 and the disc sheet 30 can be obtained by using the elastic force of the soft sheet 90, The soft sheet 90 is used simultaneously with the index sheets 61 and 61, So this can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: pin 20: tube
30: Oil band tube 40: First diaphragm
41: first through hole 50: second diaphragm
51: second through hole 52: tube fitting portion
60: main cutting portion 70: auxiliary cutting portion
80: diaphragm 80a: side diaphragm
90: Soft Sheet

Claims (2)

A butterfly valve comprising a body (10) for forming a flow path therein, and a disk (20) for opening and closing a flow path in the body (10)
A disk sheet (30) installed to be able to move forward and backward on the outer periphery of the disk (20), the outer periphery being inclined;
A protrusion 40 protruding from the inner periphery of the body 10 to face the disc seat 30;
A pressing sheet 50 fastened to one surface of the protrusion 40;
One end is fixed between the protruding portion 40 and the pressing sheet 50 and the other end is fixed to the protruding portion 40 and the pressing sheet 50 in the spacing space S between the disc sheet 30 and the protruding portion 40. [ And is in contact with the disc sheet 30 so as to expose the space S when the water pressure is generated, expands in both directions, and the other end pushes the disc sheet 30 in a resilient manner, Body sheets (60, 61);
The first and second body sheets 60 and 61 are provided respectively at contact portions between the pressing sheet 50 and the first body sheet 60 and at contact portions between the projecting portion 40 and the pressing sheet 50, First and second sealing members 71 and 72 for allowing the first-order index to be a second-order index; / RTI >
The first and second body sheets 60 and 61 are subjected to an excessive load from the disk 20 which is pushed to the left and right by the water pressure or by the excessive operation of the disk sheet 30 at the initial setting, 61 and the second body sheet 61 are pressed toward the body 10, both side edges of the lower end of the projecting portion 40 and the mutual contact portions of the second body sheet 61 and both side edges of the lower end of the pressing sheet 50, The mutual contact portions of the sheets 60 are brought into surface contact with the contact portions of the same radius R so that breakage of the first and second body sheets 60 and 61 is prevented,
The first and second body sheets 60 and 61 are formed with protrusions 62 protruding outward so as to be opposed to each other at one ends of the first and second body sheets 60 and 61 sandwiched between the protrusions 40 and the pressing sheet 50, (50), the mutual fixation is ensured.
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