TW202228129A - Disc valve and method of manufacturing the same - Google Patents

Abstract

A disc valve is provided, including: a main body, including a channel and an inner wall defining the channel, the inner wall having at least one slot extending circumferentially; a disc, rotatably connected with the main body about a rotational axis transverse to the channel; and at least two blocking members, disposed within the at least one slot and protruding beyond the inner wall, the at least two blocking members being disposed at two opposite sides of the disc and blockable with the disc on a rotation path of the disc. A method of manufacturing the disc valve as described above is further provided, including following steps of: preparing the main body having the at least one slot; assembling the disc on the main body and disposing the at least two blocking members within the at least one slot.

Description

Butterfly valve and manufacturing method thereof

The present invention is related to valves, in particular to a butterfly valve and its manufacturing method.

Generally, butterfly valves are used to control the flow of fluids when controlling the connection of pipelines. The conventional butterfly valve includes a valve body and a disc, the valve body is provided with a pipe, the disc is rotatably installed in the pipe along the diameter direction of the pipe, and the deflection angle of the disc relative to the pipe is controlled to achieve Controls the degree of connectivity of this pipe.

The type of butterfly valve is generally divided into two types: low temperature (below 250 degrees) and high temperature (higher than 250 degrees) according to the temperature of its operating environment. The butterfly valve for high temperature is provided with a baffle plate on the peripheral wall of the pipeline to limit the rotation of the plate. However, the existing baffle plate is prone to problems such as difficult processing and insufficient structural strength due to the small space of the pipe during processing, and there are shortcomings that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive butterfly valve and its manufacturing method to solve the above problems.

The main purpose of the present invention is to provide a butterfly valve and a manufacturing method thereof, which have good structural strength and are easy to process and manufacture.

In order to achieve the above object, the present invention provides a butterfly valve, comprising: a body, including a channel and an inner wall surface surrounding the channel, the inner wall surface is provided with a groove extending in at least a circumferential direction; a disc, with a transverse direction A shaft is rotatably connected to the main body in the rotation axis of the channel; and at least two stoppers are arranged in the at least one groove and protrude from the inner wall surface, and the at least two stoppers are located on opposite sides of the disc And the disc can be interfered and blocked on a rotating path of the disc.

In order to achieve the above object, the present invention further provides a manufacturing method of the above-mentioned butterfly valve, comprising the following steps: preparing the body with the at least one groove; assembling the disc on the body and blocking the at least two The piece is arranged in the at least one groove.

The following examples only illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 7 , which show a preferred embodiment of the present invention. The butterfly valve 1 of the present invention includes a body 10 , a disc 20 and at least two stoppers 30 .

The body 10 includes a channel 11 and an inner wall surface 12 surrounding the channel 11 , the inner wall surface 12 is provided with at least a circumferentially extending groove 121 ; The shaft is rotatably connected to the main body 10; the at least two stoppers 30 are disposed in the at least one groove 121 and protrude from the inner wall surface 12, the at least two stoppers 30 are located on opposite sides of the disc 20 and can be Interfering and blocking the disc 20 on a rotating path of the disc 20 has a simple structure and good strength.

The at least one groove 121 includes two side portions 122 located on two opposite sides of the rotational axis R, and at least one of the two side portions 122 is provided with a plurality of adjacent blocks 30 for easy assembly. The inner wall surface 12 is provided with a plurality of the grooves 121 , at least two of the grooves 121 are offset in an extending direction E of the channel 11 and are respectively provided with at least one blocking member 30 , whereby each blocking member 30 can In the extending direction E, it is stably abutted against two opposite sides of the disc 20 . Referring to FIG. 2 and FIG. 3 , in this embodiment, the inner wall surface 12 is provided with two grooves 121 extending in an annular shape, which is easy to process; The side portions 122 are respectively provided with a plurality of the blocking members 30 (in this embodiment, the number of the plurality of blocking members is two), which is easy to process and has a good blocking effect. Each of the blocking members 30 is a plate body extending in an arc shape, and the structure is simple and easy to manufacture. For example, the material of the plurality of stoppers 30 can be, for example, metal, plastic or composite material. When the hardness of each of the stoppers 30 is relatively high, the plurality of stoppers can be easily assembled by multi-stage assembly. 30 is embedded in one of the grooves 121, which is convenient for processing and can be connected stably. Of course, the inner wall surface can also be provided with only one annularly extending groove; the inner wall surface can also be provided with two circumferentially displaced and arcuately extending grooves; each side portion can also be provided with only one blocking member , the stopper can be slightly deformed to facilitate installation.

In detail, the butterfly valve 1 further includes a rotating shaft 40 which is non-rotatably connected to the disc 20 , and the body 10 is further provided with two assembling holes 13 extending along the rotating axis R. The rotating shaft 40 is located in the The two sets of connecting holes 13 and the at least one groove 121 are communicated with the two sets of connecting holes 13 to facilitate alignment processing. Of course, the positions of each of the grooves relative to the two sets of connecting holes can also be set at appropriate positions according to the thickness, structure, and shape of the disc; and each of the grooves can also be disconnected from the two sets of connecting holes.

Referring to FIG. 4 , the distance from one end portion 31 of at least one of the at least two stoppers 30 protruding from a groove 121 gradually decreases toward the rotational axis R, which can avoid contact with the butterfly valve when the disc 20 rotates. 1 other components interfere with each other. Preferably, each of the blocking members 30 includes at least one blocking section 32 and at least one engaging section 33 connected to the at least one blocking section 32 , and the at least one blocking section 32 protrudes from the inner wall surface 12 by a distance. It is greater than the distance at which the at least one engaging segment 33 protrudes from the inner wall surface 12 . In this embodiment, the end portion 31 of each blocking member 30 is provided with a latching segment 33 , so that each latching segment 33 receives less thrust from the disc 20 and can prevent each blocking member 30 from disengaging The at least one groove 121 and the at least one blocking section 32 can provide a larger contact area for abutting with the disc 20, and have good stability and strength. A radial dimension of each of the blocking segments 32 is larger than a radial dimension of one of the engaging segments 33 , and the blocking effect and assembly stability are good; a depth of each of the grooves 121 is not less than one of the engaging segments 33 One half of the radial thickness is used to stabilize the clamping and prevent the clamping segments 33 from deforming and breaking due to improper force. In other embodiments, each of the engaging segments can also be disposed between two adjacent blocking segments.

The present invention further provides a method for manufacturing the butterfly valve 1 as described above, which includes the following steps: preparing the body 10 provided with the at least one groove 121 , as shown in FIG. 5 ; assembling the disc 20 on the body 10 The at least two blocking members 30 are disposed in the at least one groove 121 , as shown in FIG. 6 and FIG. 7 . In this embodiment, the two blocking members 30 are first embedded in one of the grooves 121, then the disc 20 is assembled to the main body 10, and finally the other two blocking members 30 are set in the other groove. In the groove 121, processing is easy. Of course, the disc 20 can also be assembled to the main body 10 first, and then the plurality of blocking members 30 can be arranged in the two grooves 121 . Preferably, the manufacturing method further includes a step of fixing the at least two stoppers 30 to the inner wall surface 12, for example, by welding a bonding material 50, or by direct welding or welding. good.

1: Butterfly valve 10: Ontology 11: Channel 12: inner wall surface 121: Groove 122: Side 13: Assembly hole 20: Disc 30: Stopper 31: End 32: stop segment 33: Snap section 40: Rotation shaft 50: Bonding material E: extension direction R: Rotation axis

FIG. 1 is a perspective view of a preferred embodiment of the present invention. FIG. 2 is an exploded view of a preferred embodiment of the present invention. 3 is a cross-sectional view of a preferred embodiment of the present invention. FIG. 4 is a partial enlarged view of a preferred embodiment of the present invention. 5 is a perspective view of a body of a preferred embodiment of the present invention. 6 and 7 are schematic diagrams of assembly of a preferred embodiment of the present invention.

1: Butterfly valve

10: Ontology

20: Disc

30: Stopper

Claims (10)

A butterfly valve, comprising: a body, comprising a channel and an inner wall surface surrounding the channel, the inner wall surface is provided with at least a circumferentially extending groove; a disc, rotatably connected to the main body with an axis transverse to the axis of rotation of the channel; and At least two stoppers are disposed in the at least one groove and protrude from the inner wall surface, the at least two stoppers are located on opposite sides of the disc and can interfere and block the disc on a rotating path of the disc. The butterfly valve as claimed in claim 1, wherein the inner wall surface is provided with a plurality of the grooves, at least two of the grooves are displaced in an extending direction of the channel and are respectively provided with at least one of the blocking pieces. The butterfly valve as claimed in claim 1, further comprising a rotating shaft that is non-rotatably connected to the disc, wherein the body is further provided with two assembly holes extending along the rotating axis, and the rotating shaft is disposed in the two an assembly hole, the at least one groove is communicated with the two assembly holes. The butterfly valve as claimed in claim 3, wherein the distance at which one end of at least one of the at least two stoppers protrudes from the groove gradually decreases toward the rotational axis. The butterfly valve of claim 1, wherein the inner wall is provided with two annularly extending grooves. The butterfly valve of claim 1, wherein the at least one groove includes two side portions located on two opposite sides of the rotational axis, and at least one of the two side portions is provided with a plurality of adjacent blocking members. The butterfly valve as claimed in claim 1, wherein each stopper includes at least one stopper segment and at least one snap-fit segment connected to the at least one stopper segment, and the at least one stopper segment protrudes from the inner wall surface The distance is greater than the distance at which the at least one clamping segment protrudes from the inner wall surface. The butterfly valve as claimed in claim 4, wherein the inner wall surface is provided with two annularly extending grooves, the two grooves are offset in an extending direction of the passage and are respectively provided with at least one blocking member; The groove includes two side portions located on two opposite sides of the rotational axis, and the two side portions that are displaced in the circumferential direction are respectively provided with a plurality of adjacent blocking members; each of the blocking members includes at least one blocking section and at least one blocking member. The clamping section connected with the at least one blocking section, the distance at which the at least one blocking section protrudes from the inner wall surface is greater than the distance at which the at least one clamping section protrudes from the inner wall surface; a diameter of each blocking section The radial dimension is greater than a radial dimension of the clipping section; a depth of each of the grooves is not less than 1/2 of a radial thickness of the clipping section; and each of the blocking pieces is an arc-shaped extending plate flakes. A manufacturing method of a butterfly valve as described in any one of claims 1 to 8, comprising the following steps: prepare the body provided with the at least one groove; and The disc is assembled on the body and the at least two blocking pieces are arranged in the at least one groove. The manufacturing method according to claim 9, further comprising a step of fixing the at least two stoppers to the inner wall surface.

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