KR20170032117A

KR20170032117A - reversed direction glove valve

Info

Publication number: KR20170032117A
Application number: KR1020150129944A
Authority: KR
Inventors: 송경섭; 강시형; 권성진; 김윤수; 한승호
Original assignee: 동아대학교 산학협력단
Priority date: 2015-09-14
Filing date: 2015-09-14
Publication date: 2017-03-22

Abstract

Disclosure of Invention Technical Problem [8] The present invention is directed to a disk drive that can open and close a flow path of a disk, which is opposite to a conventional disk, to smooth the flow of fluid and facilitate assembly and disassembly of a valve stem and disk, The backward globe valve according to the present invention is characterized in that an inlet through which fluid is introduced into one side is formed and an outlet through which fluid flows out from the opposite side is formed, A valve body having a partition wall separating the inflow passage communicated with the outlet and the discharge passage communicating with the outlet, the partition body having an opening through which the fluid passes; And a side passage communicating with the inflow passage or the discharge passage is formed in a side portion of the cage, the lower passage being opened at a lower end portion communicating with the opening of the partition; A valve stem installed to move up and down with respect to the cage through an upper surface of the valve body and an upper portion of the cage; And a disk installed at a lower end of the valve stem and moving up and down from a lower side of the lower passage of the cage to open and close the lower passage.

Description

A reversed direction glove valve

The present invention relates to a globe valve, and more particularly, to a globe valve which is capable of opening the valve passage by moving the disk of the valve in a downward direction as opposed to a conventional one, and a reverse globe valve having a cage for facilitating assembly and disassembly. .

In general, globe valve is the most widely used valve type for the purpose of flow control. It is installed on the pipe which flows high pressure fluid and is used to open and close the flow path. The material of the valve is bronze, cast iron, Copper), alloy steel and the like are used.

As shown in Fig. 1, an ordinary globe valve is provided with an inlet 11 and an outlet 13 which are located on a straight line, and which are located at an approximately intermediate point between the inlet 1 and the outlet 2 A disc seat 5 on which a valve disc 4 is seated is formed on the partition wall 3 and a valve stem 6 is provided on the disc seat 5, (5) at right angles to each other.

In the conventional globe valve, since the disk 4 moves upward to open the flow path, the flow path becomes narrower from the upper side of the opening of the disk sheet 5, and the fluid introduced from the inlet 1 side flows into the disk sheet 5 A strong vortex is formed and a back pressure space is formed at the rear side of the disk 4 so that the flow of the fluid is not smooth as a whole, There is a problem that occurs.

Further, since the conventional globe valve is difficult to assemble and disassemble, there is a problem that it is difficult to maintain the glove valve accompanied with complicated work during replacement or repair.

Published patent application No. 10-2012-0072588 (published on April 4, 2012) Patent Document 1:

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an air conditioner, And a reverse globe valve capable of preventing vibration by reducing a load applied to the valve stem.

It is another object of the present invention to provide a reverse globe valve in which a valve stem and a part for facilitating assembly and disassembly of the disk are installed inside the valve body to facilitate replacement and maintenance.

According to an aspect of the present invention, there is provided a backward globe valve including an inlet through which fluid flows in one side and an outlet through which fluid flows out from the opposite side, A valve body having a partition wall separating the communicating inflow passage and the discharge passage communicated with the outlet from each other and having an opening through which the fluid passes; And a side passage communicating with the inflow passage or the discharge passage is formed in a side portion of the cage, the lower passage being opened at a lower end portion communicating with the opening of the partition; A valve stem installed to move up and down with respect to the cage through an upper surface of the valve body and an upper portion of the cage; And a disk installed at a lower end of the valve stem and moving up and down from a lower side of the lower passage of the cage to open and close the lower passage.

According to another aspect of the present invention, there is provided a backward globe valve comprising: an inlet formed with a fluid inlet at one side thereof and an outlet through which fluid flows out to one side of the opposite side; an inflow channel communicated with the inlet, A valve body having an opening through which fluid is allowed to pass through the partition wall and a through hole opened to the inside and outside of the center portion; An upper cover detachably coupled to the through-hole of the valve body to close the through-hole; And a side passage communicating with the inflow passage or the discharge passage, the side passage being formed at a lower end thereof with a lower passage communicating with the opening of the partition wall, the side passage being communicated with the inflow passage or the discharge passage, A cage having a hollow cylindrical shape formed so as to open; A valve stem installed to move up and down with respect to the cage through the upper cover and the cage; And a disk installed at a lower end of the valve stem and opening and closing the lower passage while moving up and down from a lower side of the lower passage of the cage.

As described above, since the reverse globe valve of the present invention moves the disk downward to open the flow path, and the fluid flows under the guidance of the cylindrical cage, the fluid is not disturbed in the flow of the fluid, . &Lt; / RTI >

Further, since the globe valve of the present invention is constructed so that the cage for opening and closing the flow path can be separated from the valve body by interacting with the disk, the valve stem and the disk are simply separated from the valve body by simply separating the cage from the valve body, And can be repaired.

1 is a cross-sectional view showing an example of the construction of a general globe valve.
2 is an exploded perspective view of a backward globe valve according to an embodiment of the present invention.
Fig. 3 and Fig. 4 are cross-sectional views of the reverse globe valve shown in Fig. 2, Fig. 3 is a state in which the flow path is closed, and Fig.
5A is a perspective view of a cage constituting the reverse globe valve shown in FIG.
Figure 5b is a cross-sectional view of the cage of Figure 5a.
FIGS. 6A and 6B are perspective views showing the valve stem of the reverse globe valve shown in FIG. 2 and the process of disassembling the disk in the valve body in sequence.
7 is a cross-sectional view of a reverse globe valve according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a reverse globe valve according to the present invention will be described in detail with reference to the accompanying drawings.

2 through 4, a reverse globe valve according to an embodiment of the present invention includes a valve body 10, a valve stem 30, a disk 40, and an upper cover 50. The valve body 10 includes a cage 20, a valve stem 30, .

The valve body 10 is connected to a pipe through which fluid flows and forms an oil passage. The valve body 10 has an inlet 11 through which fluid flows into the one side, an outlet 13 through which fluid flows to the opposite side, Are formed on the same line. A partition wall 15a or 15b is formed at the center of the valve body 10 to divide the inflow passage 12 communicating with the inlet 11 and the discharge passage 14 communicated with the outlet, An opening 15c through which the fluid passes is formed in the partition walls 15a and 15b.

The partition walls 15a and 15b are in a state of a roughly U-shaped pattern to divide the inflow passage 12 and the discharge passage 14 into a substantially S shape. The partition wall 15a forming the inflow passage 12 is formed to be upward sloped and the partition wall 15b forming the discharge passage 14 is formed to be inclined downward so that the inflow passage 12 is communicated with the discharge passage 14, As shown in Fig. The fluid flowing through the inflow passage 12 flows downward through the opening 15c of the partition walls 15a and 15b and flows into the discharge passage 14. [ Of course, contrary to this embodiment, the discharge passage 14 may be disposed above the inflow passage 12 and the fluid may flow from the lower side to the upper side in the opening 15c of the partitions 15a and 15b.

Supporting protrusions 15d on which the lower end of the cage 20 is seated are formed on the inner circumferential surface of the opening 15c of the partitions 15a and 15b so as to protrude radially inward. The support protrusions 15d may be integrally formed in a ring shape, but a plurality of the support protrusions 15d may be arranged at regular intervals along the circumferential direction.

A through hole 17 is formed in the upper portion of the central portion of the valve body 10 so as to be opened inward and outward and an upper lid 50 is detachably coupled to the through hole 17, Lt; / RTI > A plurality of bolt fastening holes 51 are formed in the peripheral portion of the upper lid 50 in the circumferential direction and bolt fastening holes 18 formed in the flange outside the bolt fastening holes 51 and the through holes 17, The upper lid 50 is coupled to the valve body 10 to close the through-hole 17 by fastening the bolt 53 to the valve body 10.

The cage 20 is inserted into the valve body 10 through the through hole 17 in a state where the upper lid 50 is open to the through hole 17 of the valve body 10, Respectively. At this time, the lower end of the cage 20 is inserted into the opening 15c of the partition walls 15a and 15b, and is then seated and supported by the support protrusions 15d. 5A and 5B, the lower surface of the cage 20 is formed with a lower passage 21 communicating with the opening 15c of the partitions 15a and 15b, Or the side passage 22 communicating with the discharge passage 14 (in this embodiment, communicating with the inflow passage 12) is opened.

A disk receiving groove 23 is formed in a lower surface of the cage 20 in a shape corresponding to the shape of the disk 40 and is closely attached to the disk 40 while being inserted.

Referring again to FIGS. 2 to 4, the valve stem 30 is installed to move up and down with respect to the cage 20 through the upper cover 50 and the cage 20. The upper end of the valve stem 30 is exposed to the outside of the valve body 10 and a handle 31 is provided to allow the user to apply an external force to the valve stem 30 by hand. The valve stem 30 may be configured to linearly move up and down with respect to the upper lid 50. The valve stem 30 may be formed to have a cylindrical shape in the center hole of the upper lid 50, It is preferable that the male thread 32 spirally engaged with the female thread 52 of the upper cover 50 is formed and the valve stem 30 is rotated so that the valve stem 30 is moved up and down .

The lower end of the valve stem 30 is fixed to the center of the disk 40 and moves up and down as the valve stem 30 moves up and down to open and close the lower passage 21 of the cage 20. Since the disc 40 is installed to move up and down from the lower side of the cage 20, when the disc 40 moves downward, the disc 40 is separated from the lower passage 21 of the cage 20, The disc 40 is opened and the fluid can flow. When the disc 40 is moved upward, the disc 40 is brought into close contact with the lower passage 21 of the cage 20 to close the lower passage 21.

It is preferable that the disc 40 has a conical shape increasing in diameter toward the lower side so that the disc 40 can be surely adhered to the inner circumferential surface of the lower passage 21 to close the flow path. When the disk 40 is conical, the rim of the disk receiving groove 23 formed on the lower surface of the cage 20 is also formed in a conical shape corresponding to the shape of the outer circumferential surface of the disk 40, .

In this embodiment, the upper surface of the disk 40 is flat, but the disk 40 has a flat surface, so as to suppress the generation of vortex caused by the collision between the fluid and the disk 40 when the disk 40 opens the flow path. 40 may be formed in a convex dome shape upward.

The thus constructed reverse globe valve of the present invention operates as follows.

3, the handle 31 is held by hand to open the oil passage in a state in which the oil passage is closed by being in close contact with the lower passage 21 of the cage 20 of the disk 40, The disk 40 is separated from the lower passage 21 of the cage 20 as shown in FIG. 4, and the flow path is opened.

At this time, the fluid introduced through the inlet 11 of the valve body 10 flows downward through the inflow passage 12 and the side passage 22 and the lower passage 21 of the cage 20, Flows through the discharge passage 14 and the outlet 13, and is discharged.

The user manipulates the handle 31 to raise the valve stem 30 so that the disk 40 is brought into close contact with the lower portion of the lower passage 21 of the cage 20 (see FIG. 3) , The lower passageway (21) is closed by the disc (40), and the flow path is closed to block the flow of the fluid.

A flexible rubber or silicone sealant or packing material may be provided between the lower passageway 21 and the contact surface of the disc 40 to prevent fluid leakage when the disc 40 closes the lower passageway 21 .

As described above, the backward globe valve of the present invention allows the fluid to flow smoothly because the disk 40 moves downward to open the flow path and the fluid flows under the guidance of the cylindrical cage 20 .

When the valve stem 30 or the disk 40 of the glove valve of the present invention is to be replaced or repaired, the bolts 53 of the upper lid 50 are loosened, as shown in FIG. 6A, The valve stem 30 and the disc 40 together with the cage 20 and the upper lid 50 are brought into contact with the valve body 10 by pulling the handle 31 upward, 10 through the through-hole 17 of the valve body 10.

6B, the handle 31 is separated from the upper end of the valve stem 30, and then the valve stem 30 is moved downward relative to the cage 20 as shown in FIG. 6C The valve stem 30 and the disk 40 may be separated from the upper lid 50 and the cage 20.

The process of assembling the valve stem 30, the disk 40, the cage 20, and the upper cover 50 to the valve body 10 may be performed in the reverse order.

As described above, according to the present invention, the cage 20, which opens and closes the passage by interacting with the disk 40, is detachably installed inside the valve body 10 so that the cage 20 can be easily separated from the valve body 10 The valve stem 30 and the disk 40 can be simply removed from the valve body 10 for replacement and repair.

The inflow passage 12 formed by the partition walls 15a and 15b of the valve body 10 is disposed on the upper side of the discharge passage 14 so that the fluid introduced through the inflow passage 12 flows into the cage 20 to the lower discharge passage 14 while passing through the side passage 22 and the lower passage 21 in this order.

7, when the discharge passage 14 of the valve body 10 is disposed above the inflow passage 12, the fluid introduced through the inflow passage 12 flows into the cage 20, And flows into the discharge passage 14 while being passed through the lower passage 21 and the side passage 22 of the cage 20 in order. When the flow path is formed so that the discharge flow path 14 is located above the inflow path 12, the fluid will apply pressure to the disk 40 at the time of closing the flow path, so that the disk 40 and the cage 20 The adhesion between the lower passages 21 is enhanced, and the leakage preventing performance of the fluid can be further improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.

10: valve body 11: inlet
12: Inflow channel 13: Outlet
14: discharge flow path 15a, 15b:
15c: opening 15d: supporting projection
17: Through hole 20: Cage
21: lower passage 22: side passage
23: disk receiving groove 30: valve stem
31: handle 40: disk
50: upper cover

Claims

An inlet (11) through which the fluid flows into the one side portion and an outlet (13) through which the fluid flows out to the opposite side is formed, and an inflow channel (12) communicating with the inlet is formed in the center portion, A valve body 10 having partition walls 15a and 15b for separating the flow path 14 and having an opening 15c through which the fluid passes through the partition walls 15a and 15b;
A lower passage 21 communicating with the opening 15c of the partitions 15a and 15b is opened at a lower end and a side passage 22 communicating with the inflow passage 12 or the discharge passage 14 is formed in a side portion A cage 20 formed to be open;
A valve stem (30) installed to move up and down with respect to the cage (20) through the upper surface of the valve body (10) and the upper portion of the cage (20);
And a disk (40) installed at a lower end of the valve stem (30) and opening and closing the lower passage (21) while moving up and down from a lower side of the lower passage (21) of the cage (20) .

The valve body (10) according to claim 1, wherein a through hole (17) is formed in the center of the valve body (10) Is inserted into the valve body (10) through the through hole (17) of the valve body (10).

The valve system according to claim 2, further comprising an upper lid (50) detachably coupled to the through hole (17) of the valve body (10) to close the through hole (17) And passes through the center of the upper lid (50).

2. The reverse globe valve of claim 1, wherein the disk (40) is conical in shape with increasing diameter toward the lower side.

5. The reverse globe valve as claimed in claim 1 or 4, characterized in that the upper surface of the disc (40) is shaped as an upwardly convex dome.

The cage (20) according to claim 1, wherein the cage (20) is formed with the lower passage (21) on its lower surface, the side passage (22) And the lower end portion is inserted into the opening (15c) of the partition (15a, 15b).

7. The disk cartridge according to claim 6, wherein a disk receiving groove (23) is formed on the lower surface of the cage (20) in a shape corresponding to the shape of the disk (40) A reverse globe valve.

The apparatus as claimed in claim 6, wherein a support projection (15d) is formed on the inner peripheral surface of the opening (15c) of the partition (15a, 15b) so that the lower end edge of the cage (20) Globe Valve.

The inflow channel (12) of the valve body (10) is disposed above the discharge channel (14) so that the fluid introduced through the inflow channel (12) And the lower passage (21), and flows into the lower discharge passage (14).

The valve body according to claim 1, wherein the discharge passage (14) of the valve body (10) is disposed above the inflow passage (12) so that the fluid introduced through the inflow passage (12) And the side passage (22), and flows into the discharge passage (14).

An inlet (11) through which the fluid flows into the one side portion and an outlet (13) through which the fluid flows out to the opposite side is formed, and an inflow channel (12) communicating with the inlet is formed in the center portion, A partition wall 15a or 15b separating the flow path 14 is formed and an opening 15c through which the fluid passes is formed in the partition 15a or 15b, A valve body 10 having a through-hole 17 formed therein;
An upper cover (50) detachably coupled to the through hole (17) of the valve body (10) to close the through hole (17);
A lower passageway which is inserted into the valve body 10 through the through hole 17 of the valve body 10 so as to be removable and communicates with the opening 15c of the partition walls 15a and 15b, A cage 20 formed in a hollow cylindrical shape and formed on the side portion to open a side passage 22 communicating with the inflow passage 12 or the discharge passage 14;
A valve stem 30 installed to move up and down with respect to the cage 20 through the upper lid 50 and the cage 20;
And a disc 40 installed at a lower end of the valve stem 30 and opening and closing the lower passage 21 while moving up and down from a lower side of the lower passage 21 of the cage 20. [ valve.

12. The apparatus according to claim 11, wherein a support projection (15d) is formed on the inner peripheral surface of the opening (15c) of the partition (15a, 15b) so that the lower end edge of the cage (20) (20) is inserted into the opening (15c) of the partition (15a, 15b) and is supported by the support protrusion (15d).

The disk (40) according to claim 11, wherein the disk (40) has a conical shape increasing in diameter toward the lower side, and the disk (40) Wherein a disc receiving groove (23) is formed in which a rim portion of the rear globe valve