KR100604965B1 - Butterfly valve of cap rising type for anti-corrosion - Google Patents

Abstract

The present invention relates to an anti-corrosion cap lift butterfly valve, which is interposed in a constant water pipe in more detail to regulate the water supply, and the drive device to adjust the installation position of the cap receiving the rotational force by the extension pipe on one side In the butterfly valve assembly, which is coupled and rotates the disk to control the opening and closing of the pipeline, the sacrificial anode is connected directly or by wire to the part that is susceptible to corrosion, such as bolts used to connect each part. The present invention relates to an anti-corrosion cap lift butterfly valve that can extend the life of the valve by inducing corrosion current to the sacrificial anode.

The anti-corrosion cap lift butterfly valve is coupled to the body of the flange formed between the pipeline, the inner side of the body on both sides of the center line to support the constant by rotating disks, and to regulate the constant, both sides of the body The rotating shaft is formed to protrude a support portion in which the rotating shaft is rotatably installed, the one side support portion is provided with a driving device for transmitting the rotational force transmitted from the outside to the disk through the rotating shaft to be a constant regulation, the upper portion of the drive device An extension tube extending upward, and the extension pipe includes extension spins formed at the upper end of the cap, and the extension spins are inserted into the extension pipes to integrally form the withdrawal pipe at the upper end of the extension spines. Interlocked to move up and down, and the upper end of the tube The sealing is made to be in contact with the inner circumferential surface of the lead-out pipe through the through, the extension spindles are inserted to be pulled out to the spindle of the drive device, the cross section of the extension spindle and the groove inside the spindle is inserted Formed into the same polygon and configured to transmit the rotational force transmitted from the cap to the spindle; The bolt coupling the body and the water pipe, the bolt fixing the driving unit to the support unit, and the bolt fixing the extension tube on the upper portion of the driving unit directly couple the sacrificial anode formed with the female thread to prevent corrosion current generated in the bolt. Characterized in that to be delivered to the sacrificial anode.

Butterfly Valve, Lifting Cap, Corrosion Resistant, Sacrificial Anode, Cap

Description

BUTTERFLY VALVE OF CAP RISING TYPE FOR ANTI-CORROSION}

1 is a perspective view of a cap lift butterfly valve according to an embodiment of the present invention,

Figure 2a is a schematic diagram of a corrosion preventing cap lift butterfly valve according to an embodiment of the present invention,

2B is an enlarged view of portion A of FIG. 2A,

Figure 2c is an enlarged cross-sectional view of portion B of Figure 2a,

Figure 3 is a side cross-sectional view of the anti-corrosion cap lift butterfly valve according to another embodiment of the present invention,

Figure 4 is a schematic diagram showing a driving device of the anti-corrosion cap lift butterfly valve according to an embodiment of the present invention,

5 is a cross-sectional view showing a cathode including a sacrificial anode according to another embodiment of the present invention;

6A, 6B, and 6C are plan views illustrating various embodiments of coupling terminals according to the present invention;

Figure 6d is a perspective view of a bolt according to another embodiment of the present invention.

[Description of Reference Symbols for Main Parts of the Drawing]

10: butterfly valve 20: body

21 flange 22 support

23: rotating shaft 24, 24 ': bolt

30: disc 31: watertight packing

40 drive device 41 stem

42: spindle 43: slide nut

44: valve arm 45: cap

50: extension tube 51: withdrawal tube

52: extension spindle 60: sacrificial anode

61: female thread portion 62: electric wire

63: positive electrode 64: mixture

70: water pipe 221: fixed plate

241: screw groove 421: groove

422 packing 441 moving groove

621: coupling terminal

The present invention relates to an anti-corrosion cap lift butterfly valve, which is interposed in a constant water pipe in more detail to regulate the water supply, and the drive device to adjust the installation position of the cap receiving the rotational force by the extension pipe on one side In the butterfly valve assembly, which is coupled and rotates the disk to control the opening and closing of the pipeline, the sacrificial anode is connected directly or by wire to the part that is susceptible to corrosion, such as bolts used to connect each part. The present invention relates to an anti-corrosion cap lift butterfly valve that can extend the life of the valve by inducing corrosion current to the sacrificial anode.

In general, the butterfly valve is interposed between the pipelines of the water pipe to interrupt the flow of water, flanges are formed on both sides so as to be interposed in the water pipe, and the body is coupled to the water pipe using a bolt, and the inside of the body And a drive unit installed on one side of the body to open and close the conduit by rotating the disc. In addition, by allowing the cap formed in the drive device to be extended to the upper portion by using an extension tube with a built-in spindle, the butterfly valve can be easily buried in the ground or higher than the installation place.

The butterfly valve having such a configuration is installed in a way that is buried in the ground or underground, and the parts exposed to the outside are exposed to corrosion. Therefore, the outer surface of the butterfly valve is coated to prevent corrosion. However, the connection member, such as a bolt for connecting each member of the butterfly valve, or a bolt for connecting the body of the butterfly valve to the water supply pipe is not coated individually, and thus is defenseless against corrosion, and the coating on the connection member is coated. Even if the coating is peeled off during the tightening process, the corrosion current is concentrated to the peeled part, which causes a problem of rapid corrosion.

In other words, the bolts used in the cap-type butterfly valve are not protected by a complete coating, so they are left unprotected in electrolytes and moisture such as water or soil when ground or buried. Therefore, since the bolt has a small electrical resistance, current flows through the electrolytic material, and corrosion occurs due to the introduced current, and corrosion is diffused throughout the valve at the starting point of the bolt connection portion, shortening the life of the valve. There is a problem that maintenance costs such as increase.

Accordingly, the present invention has been made to solve the above conventional problems,

A body interposed in the water pipe by the flange coupling, a disk rotatably mounted inside the body to control the water by rotation, and an extension pipe mounted on the side of the body so as to transmit rotational force to the disk. It is provided with a drive device installed to extend the cap receiving the rotational force from the handle to the upper, a bolt connecting the body and the water pipe, a bolt for fixing the drive device to the side of the body and the drive device and the extension pipe By providing a sacrificial anode directly or through a wire to the bolt that couples the wires, the corrosion-capped butterfly valve for preventing corrosion can be extended to transmit the corrosion current applied to the bolt to the sacrificial anode in order to prevent bolt corrosion. The purpose is to.

Corrosion preventing cap lift butterfly valve of the present invention for achieving the above object,

A flanged body is coupled between the pipelines, and both sides of the center line have a disk supported by the rotating shaft to intervene the constant, and both sides of the body protrude a support portion in which the rotating shaft is rotatably embedded. It is formed, the one side support portion is provided with a driving device for transmitting a rotational force transmitted from the outside to the disk through the rotating shaft to be a constant regulation, install an extension pipe extending to the upper portion of the drive device, the extension pipe The handle mounting portion includes a cap having an extension spin formed on the upper end, and the upper end of the extension spindle is formed to be integrated with the extension pipe by inserting the extension tube to include the extension pipe to move up and down, the upper end of the extension tube In contact with the inner circumferential surface of the outlet pipe Sealing is made, and the extension spindles are releasably inserted into the spindle of the driving device, and the cross sections of the extension spindles and the grooves inside the spindle into which the extension spins are inserted are formed in the same polygon so that the rotational force transmitted from the cap is Configured to be delivered to the spindle;

A bolt fixing the driving unit to the support unit and a bolt fixing the extension tube on the upper portion of the driving unit are directly coupled to the sacrificial anode having the female threaded portion, so that the corrosion current generated in the bolt is transferred to the sacrificial anode.

The drive device includes a stem coupled to a rotating shaft fixed to the disk; A groove formed therein to allow the extension spins to be inserted therein, and a spindle having a thread formed on the outer circumferential surface thereof; A slide nut mounted on the spindle and slidingly moved on the spindle by rotation; And a valve arm rotatably mounted to the stem and having a moving groove formed on an inner surface thereof to be rotated by the movement of the slide nut fitted into the moving groove.

In addition, the sacrificial anode is separated from the bolt and connected to the sacrificial anode by connecting the bolt and the sacrificial anode using a wire having a coupling terminal at the end so that the corrosion current generated from the bolt is transferred to the sacrificial anode through the wire.

Such sacrificial anodes are contained in a cathode having a predetermined space, including magnesium, aluminum and zinc, and the space in the anode is mixed with 60 to 83% of gypsum, 15 to 30% of bentonite, and 2 to 10% of sodium sulfate. The mixture is made to fill.

In addition, a screw thread is formed on the coupling terminal, which is an end of the wire, and a screw groove is formed on the head of the bolt connecting the body and the water pipe, and the head of the bolt connecting the driving unit to the support portion to screw the wire directly into the screw groove. Can be combined.

Hereinafter, with reference to the accompanying drawings will be described in detail for the anti-corrosion cap lift butterfly valve according to the present invention.

1 is a perspective view of a cap lift butterfly valve according to an embodiment of the present invention, Figure 2a is a schematic view of a corrosion preventing cap lift butterfly valve according to a preferred embodiment of the present invention, Figure 2b is A of Figure 2a Figure 2c is a partially enlarged view, Figure 2a is a portion B of the enlarged end shaving, Figure 3 is a side cross-sectional view of the anti-corrosion cap lift butterfly valve according to another embodiment of the present invention, Figure 4 is a preferred embodiment of the present invention Figure 5 is a schematic diagram showing a driving device of the anti-corrosion butterfly valve according to one embodiment, Figure 5 is a cross-sectional view showing a positive electrode containing a sacrificial anode in another embodiment of the present invention, Figures 6a, 6b, 6c 6 is a plan view showing various embodiments of a coupling terminal according to the present invention, Figure 6d is a perspective view showing a bolt according to another embodiment of the present invention.

1 to 4, the anti-corrosion cap lift butterfly valve 10 of the present invention is a body 20 coupled to the flange 21 to the water pipe 70, and is mounted inside the body A disk 30 for intermittent operation, a driving device 40 for applying rotational force to the disk, an extension pipe 50 mounted on the upper side of the driving device so as to extend out and out, and a bolt connecting the body and the water pipe. And a sacrificial anode 60 connected to the bolt 24 for coupling each member such as a bolt for coupling the driving device and the body and a bolt for fixing the extension tube to the driving device.

The body 20 is a tubular body having flanges 21 formed at both ends thereof, and supports 22 are protruded on both sides thereof so that the rotation shaft 23 is rotatably mounted inside the support. One of the two support parts is formed to support only the rotating shaft, and as shown in FIG. 2B, the fixing plate 221 is placed close to the end of the rotating shaft exposed to the outside, and the end of the supporting part and the end of the rotating shaft are bolted to form the rotating shaft. Can be fixed. Of course, the rotating shaft may be installed so that the bolt is fastened to the end of the rotating shaft to be rotatable by the rotation of the disk mounted on the body by a simple insertion without screwing the rotating shaft. That is, the bolt mounted at the end of the rotating shaft is mounted so that the rotating shaft can be rotated so as to bear the shaft. In addition, when the bolt is screwed to the end of the rotary shaft 23, since the support and the rotary shaft is fixed integrally, it is preferable that the other end of the rotary shaft to install the disk rotatably so that the disk can intermittently regulate the constant. .

Meanwhile, a rotating shaft 23 is rotatably installed on the other supporting portion which is not fixed to the fixing plate 221, and one end of the rotating shaft is fixed to the disk 30, and the other end thereof is a driving device ( Connected to 40).

The driving device 40 is installed on the side of the body, and one end of the rotating shaft fixed in the horizontal direction on the center line of the disk installed inside the body 20 is partially inserted into the driving device 40 case. As shown in FIG. 4, a stem 41 is mounted at an end of the embedded rotary shaft, and a valve arm 44 having a moving groove 441 formed therein is rotatably mounted.

In addition, the drive unit 40 is equipped with a spindle 42 having a thread formed on the outer circumferential surface, one end of the spindle is formed with a cap 45 to the outside of the drive case so that the handle can be mounted do. The slide nut 43 is mounted on the spindle 42 which is rotated by the rotational force so that the slide nut moves upward or downward in accordance with the rotation. The slide nut 43 is inserted into the moving groove of the valve arm 44 rotatably mounted to the stem 41 to rotate the valve arm up and down while moving on the moving groove 441 during vertical movement. The rotational force of the arm 44 is transmitted to the disk 30 through the rotation shaft 23 is a constant interruption. The disk for the constant regulation of the watertight seal 31 is interposed on one side to close the valve can be removed to improve the watertightness.

In addition, the cap 45 may be configured to transmit the rotational force directly from the handle is formed at one end of the spindle, coupled to, or separated from the spindle and to transmit the rotational force by the gear.

As described above, the spindle 42 which receives the rotational force directly from the outside is further provided with an extension tube 50 so as to extend upward. Referring to FIG. 2C, the extension pipe 50 is bolted to the upper portion of the driving device 40, and the spindle of the driving device is extended to a part of the upper portion so as to be partially settled in the extension pipe 50. A plurality of grooves 421 are formed in the axial direction, and extension spindles 52 having the same cross section as the grooves are inserted into the polygonal grooves so as to be pulled out vertically. Of course, the extension pipe 50 to protect the spindle 42 also has to be stretched out by extending the outgoing pipe 51 to the outside of the extension pipe so that the length is variable according to the expansion and contraction of the extension spindle 52, the outgoing pipe 51 The upper part of the upper part and the upper part of the extension spine 52 are integrally coupled to each other to be stretched.

That is, the extension grooves 52 are installed in the grooves 421 of the polygonal grooves 421 formed inside the spindle 42 so that the extension spindles 52 are stretchable, and a cap 45 for mounting the handle is formed at the upper end of the extension spindles. The handle can be mounted at a desired height to add rotational force so that constant regulation can be achieved. In addition, since the spindle 42 and the extension spindle 52 are formed of a rigid metallic material because they receive a strong rotational force, chemical deformation may be easily caused by moisture and other materials during embedding, and thus, In order to protect the spindle and extension spindles from external forces, an extension tube 50 and a drawer tube 51 containing the spindle and extension spindles are installed. At this time, the extension pipe 50 is fixed to the drive device 40 is to be coupled regardless of the internal rotation of the spindle 42.

On the other hand, the upper end of the extension pipe 50 is further through the packing 422 to contact the inner wall of the outlet pipe 51 is to prevent foreign matter from entering.

In addition, the driving device 40 receives the rotational force from the outside to rotate the spindle 42 to move the slide nut 43 coupled thereto up and down so that the stem 41 organically coupled with the slide nut is rotated. To open and close the valve. Such rotation of the stem can be applied using hydraulic and gas cylinders in addition to the method using the spindle described above. That is, by mounting the slide nut at the end of the hydraulic and gas cylinder and the slide nut is moved up and down by the withdrawal of the hydraulic and gas cylinder it is possible to rotate the stem organically coupled with the slide nut.

Corrosion preventing cap lift butterfly valve 10 of the present invention can be installed to prevent corrosion by installing a corrosion preventing means in a portion susceptible to corrosion, as shown in Figures 2a and 3. Corrosion preventing cap lift butterfly valve 10 of the present invention is fastened with a bolt body 20 and the flange 70 is formed with a flange, the drive unit is fastened with a bolt to the support 22 of the body side, The drive unit and the extension tube are bolted. In the above structure, the body 20, the driving device 40, and the extension tube 50 are usually coated to prevent corrosion, but since the bolt 24 for fastening them does not have a separate coating, Vulnerable.

Accordingly, by connecting the sacrificial anode 60 directly or by using the wire 62 to the bolt 24, the corrosion current generated in the bolt 24 is quickly transferred to the sacrificial anode 60, so that corrosion is performed at the sacrificial anode 60. To be generated.

When the sacrificial anode 60 is directly connected to the bolt 24, a length of the bolt to be fastened is formed to have a predetermined length, and a fastening is formed by forming a female screw portion 61 on the sacrificial anode so that the protruding bolt can be inserted. Can be done.

In addition, the sacrificial anode 60 includes magnesium, aluminum, and zinc, and may be included in the anode body 63 as shown in FIG. 5, and the space inside the anode body is 60 to 83% of gypsum and internal resistance. The mixture 64, which is mixed with 15 to 30% of bentonite and 2 to 10% of sodium sulfate having low ion exchange properties, is charged to have a high operating potential and can be used even in a high resistivity environment.

In addition, the bolt 20 for coupling the body 20 and the water pipe, the driving device, and the extension pipe constituting the butterfly valve 10 are connected to the sacrificial anode 60 by using a wire 62. The silver end may be directly welded to the bolt, or the coupling terminal 621 may be formed and fastened to the bolt.

That is, as shown in FIG. 6A, the coupling terminal 621 may be formed in a hook shape having one side open, and may be coupled to the threaded portion of the bolt. The coupling terminal 621 may be formed in a ring shape as illustrated in FIG. 6B. It can be used by fastening the bolt through the hole of). In addition, as shown in FIG. 6C, a screw thread is formed on the coupling terminal 621 itself to directly install the screw head, thereby reducing the installation time. In addition, as shown in FIG. 6D, a method of drilling a screw groove 241 in which a thread is formed is formed in the head of the bolt 24, and using the small bolt 24, a method of directly fixing a small coupling terminal to the bolt head may be applied. have.

The sacrificial anode 60 of this structure is made of a metal having a larger ionization tendency than Fe, which is a material of the coupling bolt, among the corrosion preventing cap lift butterfly valves 10, and is bonded to the bolts, thereby negatively bolting the bolts 24. The sacrificial anode 60 is polarized so that the corrosion current generated in the bolt flows to the sacrificial anode so that corrosion does not occur in the bolt.

In addition, the wire 62 for transmitting the corrosion current to the sacrificial anode 60 is not limited to the bolt as shown, it can be used by attaching the coupling terminal of the wire to the corrosion-sensitive portion of the butterfly valve. .

In addition, the above-mentioned example is only an example to demonstrate this invention. Therefore, it is obvious that the ordinary skilled in the art to which the present invention pertains uses the partial change with reference to the detailed description.

Corrosion-resistant butterfly valve of the present invention having the configuration as described above,

A body interposed in the water pipe by the flange coupling, a disk rotatably mounted inside the body to control the water by rotation, and an extension pipe mounted on the side of the body so as to transmit rotational force to the disk. It is provided with a drive device installed to extend the cap receiving the rotational force from the handle to the upper, a bolt connecting the body and the water pipe, a bolt for fixing the drive device to the side of the body and the drive device and the extension pipe By connecting sacrificial anodes directly or through wires to the bolts that couple the wires, the corrosion current applied to the bolts can be delivered to the sacrificial anodes in a speedy manner to prevent the corrosion of the bolts and to provide useful products that extend the service life.

Claims (5)

Coupling the body 20 is a flange 21 is formed between the pipelines, and in the body both sides on the center line is built into the disk 30 supported by the rotating shaft 23 to intermittently regulate the constant, On both sides, a rotating shaft protrudes and supports the support 22 in which it is rotated, and the driving unit 22 transmits the rotational force transmitted from the outside to the disk 30 through the rotating shaft so that the constant regulation is achieved. 40 is installed, and an extension tube 50 extending upwardly is installed on an upper portion of the driving device, and a cap 45 which is a handle mounting portion includes an extension spindle 52 formed at an upper end of the extension tube, and The upper ends of the extension spindles are formed integrally with the drawing tube 51 to be inserted so as to contain the extension tube so as to move up and down in conjunction with the extension spindles, and the packing on the upper end of the extension tube 50 The extension spindles 52 are inserted into the spindle 42 of the driving device so as to be closed by being in contact with the inner circumferential surface of the lead-out pipe via the 422, and the cross-sections of the extension spindles and the extension are extended. The grooves inside the spindle into which the spindle is inserted are formed in the same polygon so that the rotational force transmitted from the cap is transmitted to the spindle; The bolts fixing the drive unit 40 to the support unit 22 and the bolts fixing the extension tube 50 to the upper portion of the drive unit are directly coupled to the sacrificial anode 60 having the female threaded portion 61. Corrosion preventing cap lift butterfly valve, characterized in that the corrosion current generated in 24) to be delivered to the sacrificial anode. Coupling the body 20 is a flange 21 is formed between the pipelines, and in the body both sides on the center line is built into the disk 30 supported by the rotating shaft 23 to intermittently regulate the constant, On both sides, a rotating shaft protrudes and supports the support 22 in which it is rotated, and the driving unit 22 transmits the rotational force transmitted from the outside to the disk 30 through the rotating shaft so that the constant regulation is achieved. 40 is installed, and an extension tube 50 extending upwardly is installed on an upper portion of the driving device, and a cap 45 which is a handle mounting portion includes an extension spindle 52 formed at an upper end of the extension tube, and The upper ends of the extension spindles are formed integrally with the drawing tube 51 to be inserted so as to contain the extension tube so as to move up and down in conjunction with the extension spindles, and the packing on the upper end of the extension tube 50 The extension spindles 52 are inserted into the spindle 42 of the driving device so as to be closed by being in contact with the inner circumferential surface of the lead-out pipe via the 422, and the cross-sections of the extension spindles and the extension are extended. The groove inside the spindle into which the spindle is inserted is formed in the same polygon so that the rotational force transmitted from the cap is transmitted to the spindle; The sacrificial anode 60 is connected to the bolt for fixing the driving device 40 to the support part 22 and the bolt for fixing the extension tube 50 to the upper portion of the driving device, and the sacrificial anode 60 is a bolt ( Separately settled at 24, and connecting the bolt 24 and the sacrificial anode 60 using a wire 62 having a coupling terminal 621 at the end to transfer the corrosion current generated from the bolt to the sacrificial anode through the wire Anti-corrosion cap lift butterfly valve, characterized in that. The method according to claim 1 or 2, The drive device 40 includes a stem 41 coupled to the rotating shaft 23 fixed to the disk 30; A groove 421 formed therein to allow the extension spindles 52 to be inserted therein, and a spindle 42 having a thread formed on an outer circumferential surface thereof; A slide nut 43 mounted on the spindle and slidingly moved on the spindle by rotation; And a valve arm (44) rotatably mounted to the stem (41) and having a moving groove (441) formed on an inner surface thereof to be rotated by the movement of the slide nut (43) inserted into the moving groove. Anti-corrosion butterfly valve The method of claim 2, The sacrificial anode 60 is contained in the positive electrode body 63 having a predetermined space, including magnesium, aluminum and zinc, 60 to 83% by weight gypsum, bentonite 15 to 30%, sodium sulfate 2 in the space in the positive electrode body Anti-corrosion cap lift butterfly valve, characterized in that the mixture is filled by ~ 10%. The method of claim 2, A screw thread is formed in the coupling terminal 621, which is an end of the wire 62, and a screw groove 241 is formed in the head of the bolt 24 that connects the driving unit to the support, thereby directly connecting the wire to the screw groove 241. Anti-corrosion butterfly valve with anti-corrosion cap screw.

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