KR101810372B1 - Elastic Butterfly Valve - Google Patents

Abstract

Provided is an elastic butterfly valve which allows a butterfly valve to be easily installed between both pipes by adjusting the distance between both flanges. The elastic butterfly valve according to the present invention comprises: a butterfly valve main body (10) including a flange (11) connected to one pipe (A) formed at one side of a pipe and including a plurality of connecting rods (12) formed along the outer circumference of the pipe at the other end of the pipe; a single pipe flange (20) including a flange (21) and a plurality of connection terminals (22) corresponding to the connecting rod (12) at the outer circumference on an inner surface of the flange (21), wherein the flange (21) is connected to the other pipe (B) at one end of the pipe, the other end of the pipe is movably inserted into the other end of the pipe of the butterfly valve main body (10); and fasteners (30) fastening the connecting rods (12) and the connecting terminals (22) therebetween.

Description

Elastic Butterfly Valve < RTI ID = 0.0 >

The present invention seeks to provide a retractable butterfly valve that allows the distance between both flanges to be increased and decreased.

The butterfly valve is advantageous in that it has a wide open area of the flow path, opens and closes quickly, is light in weight, is installed in a narrow space, is easy to install, and has a low cost. It is widely used in water and sewage pipes.

As for the installation method of the butterfly valve applied to the above application, since the interval between the already installed piping and the butterfly valve to be installed at both ends thereof is not exactly the same, one end of the piping at both ends is connected to the butterfly valve, The other pipe is installed by inserting a short pipe flange that can be inserted into the pipe inner pipe, connecting the short pipe flange to the butterfly valve, and then welding the outer surface of the insertion portion between the short pipe flange and the pipe at the other end (Hereinafter referred to as " conventional ").

However, in the above-described conventional installation method, there is a problem that the installation time of the butterfly valve takes a long time due to the welding process, and it is difficult to separate the butterfly valve after the installation once, and maintenance of the butterfly valve is almost impossible .

For reference, the following prior art documents are those listed in the latest prior art documents searched with the keyword "Butterfly Valve " through Patent Information Net Kiffris, and the following description of the prior art You will be able to understand the field and background technology and its development status.

Public / registration number: 1017384460000, 2004802500000, 1020170039501, 1016781710000.

The present invention has an object of the present invention to facilitate the installation of a butterfly valve between both pipes in constructing a butterfly valve.

In order to solve the above-mentioned problem, the present invention provides a means for solving the above-mentioned problems, in which a flange of one end of a flange on both sides of a conventional butterfly valve is cut out from a tube body and then a tube of a short tube flange having a flange at the other end A plurality of connecting rods are formed concentrically on the outer surface of the cut-out tube of the butterfly valve, and a connecting terminal corresponding to the connecting rods is formed on the flange outer surface of the single-tube flange, The present invention proposes a telescopic butterfly valve which can be expanded and contracted by a distance between both flanges.

The expansion and contraction type butterfly valve proposed in the present invention can expand and contract the distance between the flanges on both sides so that the butterfly valve can be conveniently installed between the two pipes without using the conventional method. It is easy to maintain the fly valve because it is easy to remove.

1 is a perspective view showing a stretch type butterfly valve according to the present invention;
Fig. 2 is an external view of Fig. 1 and cross-
Fig. 3 is a sectional view of Fig. 2 and an enlarged balloon diagram of a joint portion
FIG. 4 is a diagram showing a balloon with a spring attached to the fastener of FIG.
Fig. 5 is a schematic view showing a balloon diagram
6,
Fig. 7 is a perspective view of a balloon with an extension jaw attached to the seal shown in Fig. 5
Fig. 8 is a graph showing the relationship between the gaps and the o-

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings may be exaggerated, omitted, or schematically illustrated for convenience of description, and the terms and names used in the description are intended to be implicitly construed according to the shape, Direction, description of the direction is determined based on the direction originally presented from the first presented drawing, and the description of the position is determined based on the middle of each structure And the inner tube and the outer tube are determined based on the center of the circle. And specific descriptions of well-known and commonly-used techniques may be omitted to avoid obscuring the subject matter, or to be omitted or replaced with a simple code or name.

Below, 1  To 3  The present invention is described below with reference to the drawings.

As shown in the drawing, the stretch type butterfly valve according to the present invention is provided with a flange 11 connected to one pipe A at one end of a pipe body, and a plurality of connecting rods 12 A butterfly valve body (10) provided with the butterfly valve body (10); A flange 21 is provided at one end of the tubular body so as to be able to flow into the inner tube at the other end of the butterfly valve body 10 and connected to the other pipe B at the other end of the tubular body, (20) having a plurality of connecting terminals (22) corresponding to the connecting rod (12) on the inner circumferential outer periphery of the inner surface of the inner tube; And a fastener (30) fastened between the connection block (12) and the connection terminal (22).

When the fastener 30 is made of a threaded rod 31, the threaded rod 31 is inserted into the threaded fastener 30 through the threaded rod 31, And a threaded groove 221 is formed in the connection terminal 22 so that a tube body of the threaded rod 31 can be inserted into the threaded groove 221, The other end of the threaded rod 31 is coupled to the threaded groove 221 of the connection terminal 22 through the through hole 121 of the connection terminal 12, It is possible to fasten the butterfly valve body 10 and the short pipe flange 20 by fastening the nut 32 coupled with the threaded rod 31 to the outer side surface and the outer flange 20, The distance between the butterfly valve body 10 and the short pipe flange 20 can be adjusted by adjusting the nut 32 of the screw rod 31 fastened to the connecting rod 12, Depending on the presence of the nut 32 of the screw rod connected 31 from the butterfly valve body 10 it may enable the flow of the short pipe flange 20. That is, when the nut 32 is fastened only to the inner side of the connecting rod 12, the short flange 20 is allowed to fall outwardly from the butterfly valve body 10 and only the nut 32 The end flange 20 can be allowed to come in from the butterfly valve body 10 to the inside.

When the butterfly valve is to be installed between the two pipes A and B as described in the background art, it is necessary to install the butterfly valve from the butterfly valve body 10 to the end of the short pipe flange 20 The butterfly valve body 10 is installed in the one side pipe A and the fastener 30 is adjusted from the butterfly valve body 10 thus installed to connect the short pipe flange 20 to the other pipe B and then the single pipe flange 20 and the other pipe are joined to complete the installation of the butterfly valve. Although not shown, the threaded rod 31 may be provided with a tool insertion groove or a tool rotation surface or a tool rotation head capable of rotating the threaded rod 31 with a tool.

The expansion and contraction type butterfly valve according to the present invention has a function of freely increasing and decreasing the distance between the flanges 11 on both sides, and this function is inconvenient as described in the background art The butterfly valve can be installed between the two pipes A and B without using the method. This operation is advantageous in that the butterfly valve can be installed more easily than in the prior art, It is easy to separate the valve, so that the maintenance is easy.

Although not described in the background, a butterfly valve has been proposed in which a distance between both flanges 11 can be expanded and contracted. However, in the prior art documents, the movable distance of the extendable short pipe flange 20 from the butterfly valve body 10 is not limited, so that when the pipe connected to the butterfly valve is pulled from the other side at the time of construction of the pipe, ) And the pipe from the other side is pushed toward the butterfly valve, when the short pipe flange 20 is pushed toward the butterfly valve and is provided between the short pipe flange 20 and the joint of the butterfly valve (Step, seal (50), flange, etc.) are contact-pressed and damaged.

The present invention is further characterized in that a fastener 30 is further provided unlike the prior art documents described above and by limiting the flowable distance of the short pipe flange 20 from the butterfly valve body 10 by the fastener 30 It is possible to prevent the problem that the end flange 20 is detached from the butterfly valve or that the end flange 20 is pushed and the components provided between the butterfly valve body 10 and the end flange 20 are damaged There is an effect.

In addition, the prior art documents have a problem in that it is not possible to adjust the distance between the short pipe flange 20 and the butterfly valve body 10 in common. However, the present invention has an effect that the adjustment can be made.

Below, 4  The present invention is described below with reference to the drawings.

As shown in the drawings, the present invention is characterized in that a fastening tool 30 is fastened between a connecting rod 12 and a connecting rod 22, and a spring 40 is fastened to the inner and outer surfaces of the rod 12, (30). ≪ / RTI >

In this way, the end flange 20 is not completely fixed from the butterfly valve body 10, but has the function of having a certain degree of fluidity as much as the elasticity of the spring 40, Temperature and impact caused by the working process of the other pipe B can be prevented from being transmitted to the butterfly valve through the pipe when the pipe is installed in an external environment such as a building, Such action can protect the butterfly valve from external force and prevent damage, thereby extending the service life of the valve.

Below, 5  To 6  The present invention is described below with reference to the drawings.

As shown in the figure, the present invention is characterized in that a sealing insertion groove 13 is formed in the inner tube at the other end of the butterfly valve body 10; A sealing contact surface (23) formed on an outer surface of the tubular body at one end of the short pipe flange (20); And a sealing (50) interposed between the sealing insertion groove (13) and the sealing contact surface (23), the sealing (50) comprising: a tubular body having a thickness; An axial tube (51) having a jaw portion (51) whose tubular body is contracted from an inner surface of the tubular body; And an inclined surface 52 formed at an inner end portion of the shaft tube 51 and connected to the tube body. The sealing insertion groove 13 exposes a part of the shaft tube 51 of the sealing 50, (50) is allowed to flow, and a cross section corresponding to the outer cross section of the seal ring (50) is embedded in the inner pipe in a state in which the seal ring (50) can be inserted outside the cylinder of the butterfly valve body And the sealing contact surface 23 corresponds to the inner end surface of the sealing ring 50 in a state in which the inclined surface 52 of the shaft tube 51 of the sealing ring 50 is in contact with the outer surface of the tube end of the short pipe flange 20. [ Which is formed in a shape in which the end face is recessed in the outer appearance.

The seal 50 is provided for the purpose of preventing leakage by tightly forming a clearance with respect to the joint between the butterfly valve body 10 and the short pipe flange 20 and may be made of rubber or a metal material. Particularly, when it is made of a metal material, there is an advantage that it can be used for a long time because there is little abrasion due to friction.

The seal 50 is inserted into the seal insertion groove 13 of the butterfly valve body 10 and then the tube of the short pipe flange 20 is inserted into the cutout 50 of the butterfly valve body 10, And then inserted into the tubular body.

Describing the operation of the seal 50 described above, the seal 50 is configured such that when the end flange 20 is received inside the butterfly valve body 10, the seal 50, together with the end flange 20, The water pressure inside the seal ring 50 is reduced due to the exposure of a part of the shaft tube 51 of the seal ring 50 from the seal insertion groove 13 when the short pipe flange 20 is displaced outwardly from the butterfly valve body 10. [ So that the sealing ring 50 is always displaced from the sealing contact surface 23 of the short pipe flange 20 to the butterfly valve 20 by moving the sealing ring 50 to the inside of the sealing contact surface 23 of the short pipe flange 20, (13) of the main body (10).

The operation of the seal 50 described above has the function of being movable in accordance with the expansion and contraction of the short pipe flange 20 from the butterfly valve body 10 so that the air tightness at all times in correspondence with the movement of the short pipe flange 20 And such an effect is effective in preventing leakage of water even when moving to the short pipe flange 20. [

Although not described in the background, a sealing 50 is conventionally applied between the short pipe flange 20 and the butterfly valve body 10 as well.

However, since the conventional structure generally has a position and structure that can not cope with the movement of the short pipe flange 20, when the pipe is moved from the initial setting and the position of the short pipe flange 20 is changed, The short pipe flange 20 has a problem in that it is liable to leak due to the movement of the pipe and is forced to fit into the gap between the layers of the butterfly valve main body 10 and the short pipe flange 20. Therefore, It is difficult to flow, and the airtightness in the overlapped state leads to the leakage of the water because the leakage path is inevitably leading to a straight line. Especially, since the sealing material 50 of the metal material is difficult to use, There is a problem that maintenance is frequent as well as failure to go.

The present invention is different from the above-described prior art documents in that the sealing 50 is not provided in the interlayer gap between the inner pipe of the butterfly valve body 10 and the short pipe flange 20, It is possible to maintain the airtightness by forming a forklift path while blocking the front of the water leakage passage by interposing the short pipe flange 20 and the short pipe flange 20 so as to cope with the flow of the short pipe flange 20, Leakage of water can be actively prevented by the movement of the short pipe flange 20, and metal sealing can be applied.

6 (a) shows a state before the butterfly valve is coupled to the other pipe, and FIG. 6 (b) shows a state where the butterfly valve is coupled to the pipe (B) shows a state in which the seal 50 is moved inward by the seal insertion groove 23 by the water pressure inside the butterfly valve, and the operating principle of the seal 50 Will be able to grasp enough.

Below, 7  The present invention is described below with reference to the drawings.

5, the sealing 50 is formed by a seal 50 having a proximal portion 53 having a jaw portion extending from the rear surface of the tube, The seal insertion groove 13 and the seal contact surface 23 are formed in the seal insertion groove 13 of Fig. 5 in such a manner that a section corresponding to the seal 50 described above is formed in the tubular body of the butterfly valve body 10 And can be formed in a shape which is recessed in the outer tube of the inner tube and the outer tube of the short tube flange 20. [

To summarize again, the present invention comprises a sealing insertion groove 13 formed in the inner tube at the other end of the butterfly valve body 10; A sealing contact surface (23) formed on the outer surface of the tubular body at one end of the short pipe flange (20); And a sealing (50) interposed between the sealing insertion groove (13) and the sealing contact surface (23), the sealing (50) comprising: a tubular body having a thickness; An axial tube (51) having a jaw portion (51) whose tubular body is contracted from an inner surface of the tubular body; A proximal tibia 53 having a jaw portion extending from the outer surface of the tubular body to the tubular body; And an inclined surface 52 formed at a portion extending from the inner end of the shaft tube 51 and the proximal tube 53 to the tubular body. The sealing insertion groove 13 is formed in the shaft tube 51 of the sealing 50, A section corresponding to the outer end surface of the sealing ring 50 is formed in the inner tube in a state in which the sealing ring 50 is partially exposed and the sealing ring 50 has a flowable distance, , The sealing contact surface 23 is formed such that a section corresponding to the inner end surface of the sealing ring 50 is in contact with the outer surface of the end surface of the short pipe flange 20 in a state in which the inclined surface 52 of the shaft- As shown in FIG.

The seal 50 is formed in the seal 50 shown in FIG. 5 with a denture 53. The denture 53 of the denture 50 is folded back once more, And the number of contact surfaces is increased. If the seal 50 shown in FIG. 7 is applied instead of the seal 50 shown in FIG. 5, it is possible to more positively prevent water leakage than FIG. 5 while having the action effect shown in FIG.

Below, 8  The present invention is described below with reference to the drawings.

7, the seal 50 is interposed between the seal insertion groove 13 and the sealing contact surface 23, and the inner pipe at the other end of the valve body of the butterfly valve body 10 and the end surface of the short- (50) so as to have a gap (60) between the tube outer surface of the tube body (20).

In this way, the angle of the short pipe flange 20 can be adjusted from the butterfly valve body 10 by the interval of the clearance 60.

(A) and (B) may not be located on the same line, and if the butterfly valve is installed in this state, the flange of the both pipes A and B and the flange of the butterfly valve 11 and 21 are misaligned and are not correctly coupled.

Even if the flanges 11 and 21 of the butterfly valves are displaced from each other, the angle of the clearance 60 is adjusted by the interval of the clearance 60, So that the butterfly valve can be accurately coupled between the pipes A and B at both ends.

At this time, it is preferable to apply rubber rather than a metal material so that the seal 50 can move fluidly with a change in angle. When a metal material is applied instead of rubber, as shown in the drawing, A groove may be formed at the rear end of the seal 50 contacting the seal ring 23, and then airtightness may be maintained through the O-ring 70. Although not shown, the O-ring 70 may be applied to the end of the sealing insertion groove 13 and the sealing contact surface 23 instead of the sealing 50.

Although not shown, the configuration of the gap 60 and the O-ring 70 described above can be applied to FIG. 5 as well, and the O-ring 70 can be formed not only in the rear end but also in the front end.

Hereinafter, the application of the configuration proposed by the present invention will be described.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. The structure, form, shape, arrangement, direction, and quantity of the constituent elements and their concrete constituent elements of the invention are determined in consideration of the principle to be pursued and may be variously changed as needed. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed and desired or desirable. It is. Accordingly, the present invention includes all of the above-described configurations, and the present invention is most preferably completed. However, the present invention can be completed by selecting or excluding some of the configurations described above according to cost reduction, manufacturing convenience, , One or a part of the components may be separated and completed in parallel with other components. In addition, each of the constituent elements described above can be applied independently to other technical fields in view of principle, purpose, function, role, action, effect, and the like. Accordingly, the present invention is not limited to the above embodiments and various changes and modifications may be made without departing from the scope of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives , modifications and variations will be apparent to those skilled in the art in light of the above teachings. The effect on the part seems to be sufficiently inferable. Those skilled in the art will appreciate that various modifications and changes may be made thereto by those skilled in the art based on the teachings herein without departing from the spirit and scope of the invention.

10: Butterfly valve body
11: Flange
12: Links
13: Sealing insertion groove
20: single-end flange
21: Flange
22: Connection terminal
23: sealing contact groove
30: Fastener
40: spring
50: sealing
51: Axial chin
52:
53: Dorsal root
60: niche
70: O ring

Claims (5)

A butterfly valve body (10) having a flange (11) connected to one pipe (A) at one end of the pipe and having a plurality of connecting rods (12) along the outer periphery of the other end of the pipe; A flange 21 is provided at one end of the tubular body so as to be able to flow into the inner tube at the other end of the butterfly valve body 10 and connected to the other pipe B at the other end of the tubular body, (20) having a plurality of connecting terminals (22) corresponding to the connecting rod (12) on the inner circumferential outer periphery of the inner surface of the inner tube; And a fastener (30) fastened between the connecting rod (12) and the connecting terminal (22)
A sealing insertion groove 13 formed at the other end of the tubular body of the butterfly valve body 10; A sealing contact surface (23) formed on an outer surface of the tubular body at one end of the short pipe flange (20); And a sealing (50) interposed between the sealing insertion groove (13) and the sealing contact surface (23)
The seal (50) comprises a tubular body having a thickness; An axial tube (51) having a jaw portion (51) whose tubular body is contracted from an inner surface of the tubular body; And an inclined surface (52) formed at an inner end of the shaft tube (51) and at a portion leading to the tube body,
The seal insertion groove 13 exposes a part of the shaft tang 51 of the seal 50 so that the seal 50 has a distance to which the seal 50 can flow and the seal 50 is located outside the tube of the butterfly valve body 10. [ The end face of the seal ring 50 corresponding to the outer end face of the seal ring 50 is recessed in the inner pipe,
The sealing contact surface 23 is formed in such a manner that a section corresponding to the inner end surface of the sealing ring 50 is in contact with the outer surface of the tube end of the short pipe flange 20 in a state in which the inclined surface 52 of the sealing tube 50 of the sealing ring 50 is in contact with the outer surface of the tube end of the short pipe flange 20 Wherein the valve member is formed in a shape that is recessed in the valve seat.
The method according to claim 1,
The seal (50) has a proximal portion (53) having a jaw portion extending from the outer surface of the tube back to the tubular body; And an inclined surface formed at a portion of the proximal end of the proximal portion 53 which is connected to the tube body. The sealing insertion groove 13 has a cross section corresponding to the outer end surface of the proximal portion 53, Wherein the first and second butterfly valves are made of a metal.
The method according to claim 1 or 2,
A gap 60 is formed between the inner pipe at the other end of the butterfly valve body 10 and the outer surface of the tube of the short pipe flange 20 with a seal 50 interposed between the sealing insertion groove 13 and the sealing contact surface 23. [ And a seal (50) interposed therebetween. delete delete

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