KR20120019725A

KR20120019725A - Butterfly valve

Info

Publication number: KR20120019725A
Application number: KR1020100083115A
Authority: KR
Inventors: 정근수
Original assignee: 정근수
Priority date: 2010-08-26
Filing date: 2010-08-26
Publication date: 2012-03-07

Abstract

The present invention relates to a butterfly valve for shaft correction, and an object of the technical implementation is to stably correct and compensate by a drive shaft correction unit and a driven shaft correction unit when an axis deflection phenomenon occurs in a valve disc. By continuously maintaining the fixed coupling force between the drive and the driven shaft, to prevent the occurrence of gaps in the position of the valve disk and the opening and closing of the flow passage according to the, and to prevent the occurrence of the gap, to improve the watertightness and airtightness Accordingly, the present invention provides an butterfly valve for axial correction so that the service life of the valve can be increased and the service life can be extended.
In order to achieve the above object, according to a concrete means of the present invention,
A drive shaft connecting tube and a driven shaft connecting tube, the valve body having a flow passage further formed on an inner side thereof, a driving rotating shaft inserted into and coupled to the driving shaft connecting tube and the driven shaft connecting tube, a driven rotating shaft, and In the butterfly valve consisting of a valve disk for regulating the opening and closing of the flow passage;
A drive shaft coupling unit to the drive shaft coupling pipe to which the drive rotation shaft is coupled;
The driven shaft connecting pipe to which the driven rotating shaft is coupled, is achieved by further equipped with a driven shaft combining unit.

Description

Butterfly Valve for Shaft Compensation {BUTTERFLY VALVE}

The present invention relates to a butterfly valve, and more particularly, in a rotational shaft for controlling the opening and closing of the valve disc, the wear phenomenon of the bush according to the repetitive opening and closing action of the rotational shaft, and the resulting shaft sag phenomenon, The present invention relates to a butterfly valve for axis correction that is stably corrected and compensated to maintain a stable shaft holding force, thereby providing watertightness and airtightness as well as increasing durability.

In general, the butterfly valve is a component that is used to induce or close the flow of fluid and gas while being installed in a piping line where water, oil, gas, etc. are flowing, which requires high airtightness. Can be.

Thus, looking at the schematic configuration of a conventional butterfly valve used for such a purpose;

This, as shown in Figure 1, based on the valve body 20 of the cylindrical structure in which the flow passage 10 is formed, the valve disc in the inner central portion of the flow passage (10);

On the left and right sides of the rear side of the valve disc, a pair of means for controlling the rotational relationship of the valve disc, for example, a drive rotation shaft and a driven rotation shaft divided by left and right driving the opening and closing of the flow passage by applying rotational power, To be further connected in a symmetrical structure;

Again, it can be seen that the control means connected to the drive rotation shaft on the outer surface of the valve body 20, the opening and closing operation unit (not shown) consisting of a power motor, a gearbox, and an operation handle (in addition to the body) is integrally installed. have.

However, such a conventional butterfly valve has a driving rotational shaft provided for intermittent opening and closing of the valve disc and a coupling portion of the driven rotational shaft, for example, a bushing coupling portion, in a continuous and repeated use relationship. As a result, the deflection of the shaft inevitably occurs, and the deflection of the shaft causes the valve disc to be deformed, generates gaps in the opening and closing portions of the flow passages, and leaks such as leakage. In particular, when a gap occurs in the opening and closing portion of the flow passage due to the positional deformation of the valve disc, the disc seat provided with the valve disc and the body seat provided with the valve body are not in close contact with each other. It can also cause significant durability problems, such as being easily dislodged, broken or damaged by crushing or sliding. Was.

On the other hand, recently solved some of the problems of the axial deflection phenomenon of the butterfly valve, a patent application registration registration (utility model registration No. 0 047010) has been invented the "axial support device of the butterfly valve".

However, although the butterfly valve is provided with a pair of symmetrical structures in which the rotational relationship between the valve disc, for example, the drive rotational shaft and the driven rotational shaft is divided into left and right, the " butterfly " The valve shaft support device " is provided with means for correcting and supporting the shaft only on the driven rotation shaft. Therefore, the deflection phenomenon of the driving rotation shaft does not correspond to the deflection of the drive rotation shaft. The problem of generating a gap in the opening and closing portion of the passage was to remain as it is.

Alternatively, in the " butterfly valve shaft support device ", the shaft support means provided on the driven shaft has a series of constitutions finished by a protective cap having a plurality of bolting relations, thereby causing the shaft to deflect. When correcting the position according to the phenomenon, after removing the protective cap through the bolt dismantling operation, the bottom of the shaft is corrected, and again, after the completion of such shaft correction work, the separated protective cap must be refitted by bolting. The problem was that the axis calibration was very cumbersome and difficult.

Therefore, the present invention was devised to solve the general problems of the conventional butterfly valve shaft support device;

An object of the present invention, when the deflection phenomenon occurs due to the repetitive opening and closing action of the valve disk, by means of the drive shaft correction unit and the driven shaft correction unit, to be stably corrected, compensated, the fixed coupling force of the drive rotation shaft and the driven rotation shaft By continuously maintaining the valve disc, it is possible to prevent the occurrence of gaps in the position of the valve disc and the resulting flow passage opening and closing, and also to improve the watertightness and airtightness according to the prevention of the occurrence of the gap, the blocking efficiency of the valve Along with the rise, there is provided a butterfly valve for axial correction to extend the service life.

On the other hand, another object of the present invention, the rotation opening and closing means of the left and right divided symmetrical structure for controlling the opening and closing action of the valve disk, for example, the driving rotation shaft and the driven rotation shaft without being limited to any one of the configuration direction, both directions, Depending on whether or not the shaft deflection occurs, the selective correction and compensation processing can be performed, thereby providing a more stable and unbiased axial support action. In addition, the present invention provides a butterfly valve for axis correction that increases the durability by stably maintaining the sheet, thereby preventing the unnecessary seat from being separated, damaged, and broken.

Therefore, as a specific means of the butterfly valve for axis correction according to the present invention for achieving the above object;

A drive shaft connecting tube and a driven shaft connecting tube, the valve body having a flow passage further formed on an inner side thereof, a driving rotating shaft inserted into and coupled to the driving shaft connecting tube and the driven shaft connecting tube, a driven rotating shaft, and In the butterfly valve consisting of a valve disk for regulating the opening and closing of the flow passage;

A drive shaft coupling unit to the drive shaft coupling pipe to which the drive rotation shaft is coupled;

The driven shaft connecting pipe to which the driven rotating shaft is coupled, is achieved by further equipped with a driven shaft combining unit.

Accordingly, the butterfly valve for axis correction according to the present invention includes a drive shaft correction unit and a driven shaft correction unit, which stably corrects and compensates for an axis deflection phenomenon of the butterfly valve, thereby driving the drive rotation shaft and the longitudinal axis. The fixed coupling force of the coaxial shaft is continuously maintained, thereby preventing the occurrence of gaps in the position of the valve disc and the resulting opening and closing of the flow passage, thereby improving the watertightness and airtightness as well as extending the service life.

Alternatively, the drive rotational shaft and the driven rotational shaft can be subjected to selective axis correction and compensation processing in both directions, without being limited to any one configuration direction, thereby providing a more stable and unbiased axis support action. In this way, the adhesion between the valve seat and the disc seat provided with the butterfly valve is also stably maintained by the unbiased axial support action, thereby preventing unnecessary seating, separation, damage and breakage. It provides a useful expectation.

1 is an exploded perspective view of a butterfly valve for axis correction according to the present invention
Figure 2 is a front cross-sectional state diagram of the butterfly valve for axis correction according to the present invention
Figure 3 is a side cross-sectional state of engagement of the butterfly valve for axis correction according to the present invention
4 is a cross-sectional view of an enlarged portion A of FIG.
5 is an enlarged cross-sectional view of the portion B of FIG.

Hereinafter, a preferred embodiment configuration of the butterfly valve for axis correction according to the present invention will be described in detail with reference to the accompanying drawings.

Thus, with reference to the accompanying drawings, a schematic configuration of the present invention, the valve body 1, the drive rotation shaft (2), the driven rotation shaft (3), the valve disk (4), The drive shaft correction unit 5 and the driven shaft correction unit 6 are comprised.

Here, first, the valve body (1) is cast iron or stainless steel when the use relationship of the low pressure, and spherical graphite cast iron or cast steel when the medium / high pressure use relationship, and has a high pressure use relationship. It is a well-known configuration that is cast molded into a cylindrical structure as shown in Figure 1 using a forged steel material, such a valve body 1, as shown in Figure 1 or 2, usually, left, right A pair of drive shaft connecting pipes (11) and driven shaft connecting pipes (12) symmetrically formed on both sides are integrally formed, and a flow passage (13) penetrates horizontally in the inner central portion thereof, and again, the flow passage (13) As shown in FIG. 3 in the central portion of the inner circumferential surface, a body sheet 14 made of a material such as rubber, Teflon, or metal is mounted and configured.

The drive rotation shaft 2 and the driven rotation shaft 3 allow the valve disk 4, which will be described later, to be installed in the flow passage 13 of the valve body 1 described above. The rotational force is given to 4), and the conventional shaft configuration is made to interrupt the opening / closing relationship of the flow passage 14. Thus, the driving rotational shaft 2 and the driven rotational shaft 3 are As shown in Figure 1 or 2, it is provided with a pair of rod structure divided into a left and right horizontal structure (not shown reference numeral P is a bolt fastening hole, S is a shaft support bush).

At this time, the drive rotation shaft (2) has a power connection relationship with an external power supply means, for example, a drive motor, which is not different from the conventional butterfly valve configuration, and thus, the illustration of the drive motor will be omitted. do.

In addition, the valve disk 4 is a conventional configuration to interrupt the opening and closing of the flow passage 13 described above, such a valve disk 4 is shown in Figure 1 or 3, a circular plate-like body And a pair of connecting members 41 for inserting and engaging the above-described driving pivot shaft 2 and driven pivot shaft 3 at the rear center thereof, and again, the outer circumferential surface of the valve disc 4 Around the periphery, as shown in Fig. 3, a conventional disc seat 42 having a ring shape is mounted and equipped.

In addition, the drive shaft correction unit (5) is a gist configuration of the present invention to correct and maintain the deflected drive rotation shaft (2) in a rigid fixed state when a shaft deflection phenomenon occurs in the above-described drive rotation shaft (2). As such, the drive shaft correction unit 5, as shown in FIG. 1 or 2, forms a combination flange 51 of a circular band structure in which a drive shaft insertion hole 511 is formed at an inner center thereof. It is provided with a drive shaft crimping bush 52 that is seated on the inner lower surface of the drive shaft insertion hole 511 and in close contact with the lower outer diameter surface of the drive rotation shaft (2) described above, and again to the drive shaft crimping bush (52) It is preferable to provide a pressure adjusting bolt 53 to provide a close contact pressure.

At this time, in the drive shaft correction unit 5, the combination flange 51, as shown in Fig. 1 or 2, a structure in communication with the drive shaft insertion hole 511 on the outer lower surface, the drive shaft pressure The adjustment hole 512 is further formed, and thus, the above-described pressure adjusting bolt 53 is fastened and mounted to the formed drive shaft pressure adjustment hole 512.

In addition, the driven shaft correction unit (6), when the shaft deflection phenomenon occurs in the above-described driven rotating shaft (3), the deflection of the driven driven shaft (3) of the present invention to be maintained in a fixed fixed state This is a key point of configuration, thus, the driven shaft correction unit 6, as shown in Figure 1 or 2, to form a closing cover 61 taking a circular block structure, the closing cover 61 A part that is tightly coupled to one side, for example, to have a wedge flange 62 formed with a block installation groove 621 on the inner lower surface, and continuously inserted, coupled to the block installation groove 621 in a sliding inclined structure. Block, for example, as shown in Figure 1, to further provide a pressure control block 63 of the shape and shape, again, as shown in Figure 4, as shown in Figure 4, by the fastening bolt (b) 3) to form an anchor guide guide 64 having a close contact guide pipe 641 is coupled to the end of Finally, as the state in contact with the outer diameter of the lower surface of the close induction pipe 641, and further provided with a driven shaft pressing bush 65 to receive the axis correction pressure from the pressure control block 63 It is preferable to construct.

At this time, in the driven shaft correction unit 6, the closing cover 61, as shown in Fig. 1 or 2, further forms a pressure regulation guide hole 611 forming a horizontal through structure on one side thereof As such, the block pressure adjusting bolt 612 is fastened and provided to the formed pressure regulating induction hole 611, and, again, a part structure that can be opened and closed by manual operation on the outer inlet of the pressure regulating induction hole 611. For example, the cap 613, which is detachably coupled to the screw fastening structure, is to be further coupled and provided.

Therefore, looking at the mutual coupling relationship of the axis correction butterfly valve according to the invention made of a series of configuration, as described above;

First, as shown in FIG. 1 or FIG. 3, as a coupling form that is not different from that of the conventional butterfly valve, the valve main body 1 is connected by the drive rotation shaft 2 and the driven rotation shaft 3. The valve disc 4 is installed in the center of the inner flow passage 13 in the rotational opening and closing intermittent structure.

Subsequently, the drive shaft connecting pipe 11 of the valve body 1 to which the drive rotation shaft 2 is coupled is provided with a series of drive shaft correction units 5, for example, as shown in FIG. 1 or 2. 2) a combination flange 51 inserted into and coupled to the drive shaft, a drive shaft press bush 52 in close contact with the lower outer diameter surface of the drive pivot 2, and a pressure adjustment for applying a close pressure to the drive shaft press bush 52 Mounting bolts 53 in a sequential combination;

Continuously, a closing cover provided with a series of driven shaft correction units 6, for example, a pressure regulating guide hole 611, in the driven shaft connecting pipe 12 of the valve body 1 to which the driven rotating shaft 3 is coupled. (61), the wedge flange (62) having a block installation groove (621) in close contact with one side of the closing cover (61), and a pressure control block (63) inserted into the block installation groove (621). And a shaft fixing guide vane 64 provided with an adhesion guide pipe 641 coupled to the driven pivot shaft end by fastening the bolt b, and in close contact with the lower surface of the adhesion guide pipe 641. In order to install and combine the driven shaft compression bushing 65 receiving the shaft correction pressure from the pressure control block 63 in a sequential combination form, the butterfly valve for shaft correction according to the present invention is implemented.

Accordingly, the butterfly valve for axis correction according to the present invention having the above-described coupling relationship, when the repetitive, continuous opening and closing action of the valve disc 4 is made, due to the wear phenomenon of the shaft support bush (S), the drive rotation shaft (2) and the axial deflection phenomenon occurs in the driven rotational shaft (3), which causes the drive rotational shaft (2) and the driven rotational shaft (3) to shake, causing leakage of the disc valve;

Therefore, when such a shaft deflection occurs, first, as shown in FIG. 4, in the finishing cover 61 provided in the driven shaft correction unit 6, the cap coupled to the pressure regulation guide hole 611 ( After removing the 613, using a tool such as a wrench to tighten the block pressure adjusting bolt 612 provided in the pressure regulating guide hole 611, the block pressure adjusting bolt 612 is a pressure adjusting block ( 63), and the tightening pressure transmitted in this way is transmitted to the driven shaft press bush 65 again, and closely adheres to the induction pipe 641 of the shaft fixing guide vane 64, and the pressing force. By acting on, the deflected and deformed driven pivot shaft 3 is corrected to a rigid fixed form, as shown in FIG.

Further, as described above, under the condition that the deflection-deformed drive rotation shaft is corrected, as shown in FIG. 5, in the drive shaft correction unit 6, the drive shaft pressure adjusting hole 512 of the combination flange 51. When the pressure adjusting bolt 53 coupled to the screw is tightened by using a tool such as a wrench, the pressure adjusting bolt 53 transmits the tightening pressure to the drive shaft crimping bush 52. The driving shaft crimping bush 52, which has been received, imparts a pressing force to the outer diameter of the bottom surface of the driving pivot 2, and causes the driving pivot 2 to be corrected to a rigid fixed form as shown in FIG.

DESCRIPTION OF SYMBOLS 1 Valve body 2 Driven shaft 3 Driven shaft
4 valve disc 5 drive shaft correction unit 6 driven shaft correction unit
51: combination flange 52: drive shaft compression bush 53: pressure adjusting bolt
61: closing cover 62: wedge flange 63: pressure control block
64: shaft fixing guide feather 65: driven shaft compression bush

Claims

A valve body (1) having drive shaft connecting tubes (11) and driven shaft connecting tubes (12) provided on both left and right sides thereof, and having a flow passage (13) formed on an inner side thereof; A left and right horizontal split structure, the drive shaft connecting tube 11 and the driven shaft connecting tube 2 inserted into and coupled to the driven shaft connecting tube 12 and the driven rotating shaft 3, respectively; And a butterfly valve which is rotationally controlled by the drive rotation shaft (2) and the driven rotation shaft (3) and which comprises a valve disc (4) for intermittent opening and closing of the flow passage (13);
A drive shaft correction unit 5 is further mounted and provided on the drive shaft connecting pipe 11 to which the drive rotation shaft 2 is coupled, and the drive shaft correction unit 5 is inserted into and coupled to the drive rotation shaft 2. A flange 51, a drive shaft press bush 52 in close contact with the lower outer diameter surface of the drive pivot 2, and a pressure adjusting bolt 53 for applying a close contact pressure to the drive shaft press bush 52;
In the driven shaft connecting pipe 12 to which the driven rotating shaft 3 is coupled, a driven shaft correcting unit 6 is further mounted and provided. The driven shaft correcting unit 6 includes a pressure regulating induction hole 611. Wedge flange 62 is provided with a closing cover 61, a block installation groove 621 that is in close contact with one side of the closing cover 61, and the pressure is inserted into the block installation groove 621 Adjusting block 63, and the shaft fixed guide vane 64 is provided with a close contact guide pipe 641 coupled to the end of the driven pivot shaft 3 by the bolt (b), and the close guide pipe 641 The butterfly valve for axis correction, characterized in that the close contact with the lower surface, consisting of a driven shaft pressing bush (65) receives the axis correction pressure from the pressure control block (63).

The method of claim 1;
The combination flange 51, the drive shaft insertion hole (511) is formed in the inner center;
On the outer surface of the combination flange 51, as a structure in communication with the drive shaft insertion hole 511, the pressure adjustment bolt 53 is provided with a fastening, the drive shaft pressure adjustment hole 512, characterized in that further formed Butterfly valve.

The method of claim 1;
The closing cover 61 is fastened and provided with the block pressure adjusting bolt 612 to the pressure regulating induction hole 611, and the contact pressure of the pressure adjusting block 63 by the block pressure adjusting bolt 612. To be controlled;
The butterfly valve for axis correction, characterized in that the cap 613 is further provided, the cap 613 is coupled to the pressure regulation induction hole 611 in a screw-fastening structure.