Butterfly valve

Abstract

A butterfly valve according to the present invention controls the opening and closing of the inside of a pipe, and comprises: a circular disc that rotates to open and close the inside of the pipe; a rotary shaft that is coupled to the circular disc and rotatably mounted inside the pipe; and a mounting part having a mounting hole into which the rotary shaft is mounted. The circular disc has an insertion hole into which the rotary shaft is inserted, the circular disc includes a disc coupling part provided on the inner surface of the insertion hole and forming a polygonal hole in a coupling section engaged with the rotary shaft, the rotary shaft includes a shaft coupling part having a polygonal cross-section in the coupling section, the shaft coupling part is coupled to the disc coupling part, and the disc coupling part includes an engineering plastic material.

Description

butterfly valve

[0001] Cross-citation with related applications

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0171954 dated November 27, 2024, and all contents disclosed in said Korean Patent Application are incorporated herein as part of this specification.

[0003] Technology field

[0004] The present invention relates to a butterfly valve.

[0005] The occurrence of magnetic foreign matter in the cathode material process poses a significant risk in battery manufacturing, and existing valves have not taken this risk into account. As interest in and management standards for magnetic foreign matter have increased to the micrometer level, this has emerged as a problem that needs to be addressed.

[0006] In particular, there has been a problem with the generation of metallic foreign matter in conventional metal disc valves used in the cathode material process, where the discs wear out and the connecting parts are damaged due to friction during operation.

[0007] One aspect of the present invention is to provide a butterfly valve capable of preventing the occurrence of metallic magnetic foreign matter.

[0008] A butterfly valve according to an embodiment of the present invention is a butterfly valve for controlling the opening and closing of a pipe, comprising: a disc-shaped disc that opens and closes the pipe as it rotates; a rotating shaft coupled to the disc-shaped disc and rotatably mounted within the pipe; and a mounting portion having a mounting hole formed therein for mounting the rotating shaft, wherein the disc-shaped disc has an insertion hole into which the rotating shaft is inserted, and the disc-shaped disc includes a disc coupling portion provided on the inner surface of the insertion hole and forming a polygonal hole in a coupling portion engaged with the rotating shaft, and the rotating shaft includes a shaft coupling portion having a polygonal cross-section formed in the coupling portion, and the shaft coupling portion is coupled to the disc coupling portion, and the disc coupling portion comprises an engineering plastic material.

[0009] According to the present invention, when a disc-shaped disk is coupled to a rotating shaft and the rotating shaft is rotatably mounted to a mounting part, the disk coupling part of the disc-shaped disk engaged with the rotating shaft is formed of an engineering plastic material, thereby preventing the occurrence of metal foreign matter between the rotating shaft and the disc-shaped disk and providing high durability of the coupling part.

[0010] In addition, the stopper cover of the stopper part mounted on the rotating shaft to prevent shaking of the rotating shaft can be formed from a plastic material to prevent the occurrence of metal foreign matter. At this time, the stopper cover is made of an engineering plastic material, thereby providing a component with excellent impact resistance, wear resistance, cold resistance, chemical resistance, electrical insulation, and durability.

[0011] FIG. 1 is a perspective view showing a portion of a butterfly valve according to an embodiment of the present invention.

[0012] FIG. 2 is a front view showing a butterfly valve according to an embodiment of the present invention.

[0013] FIG. 3 is a front view showing a disc-shaped disc in a butterfly valve according to an embodiment of the present invention.

[0014] FIG. 4 is a cross-sectional view showing the insertion hole of a disc-shaped disc in a butterfly valve according to an embodiment of the present invention.

[0015] FIG. 5 is a cross-sectional view showing a butterfly valve according to an embodiment of the present invention.

[0016] Figure 6 is a cross-sectional view showing an enlarged view of area A in Figure 5.

[0017] FIG. 7 is a plan view showing the rotation axis in a butterfly valve according to an embodiment of the present invention.

[0018] Figure 8 is a cross-sectional view showing an enlarged view of area B in Figure 5.

[0019] FIG. 9 is a perspective view showing a rotating shaft and a stopper part in a butterfly valve according to an embodiment of the present invention.

[0020] FIG. 10 is an exploded perspective view showing a rotating shaft and a stopper part in a butterfly valve according to an embodiment of the present invention.

[0021] The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. It should be noted that in assigning reference numerals to the components of each drawing in this specification, the same components are assigned the same number whenever possible, even if they are shown in different drawings. Furthermore, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Also, in describing the present invention, detailed descriptions of related known technologies that could unnecessarily obscure the essence of the invention are omitted.

[0022]

[0023] FIG. 1 is a perspective view showing a butterfly valve according to an embodiment of the present invention with a portion cut away, and FIG. 2 is a front view showing a butterfly valve according to an embodiment of the present invention.

[0024] Referring to FIGS. 1 and 2, a butterfly valve (100) according to an embodiment of the present invention is a butterfly valve (100) that controls the opening and closing of a pipe (P), and may include a disc-shaped disk (110) that opens and closes the pipe (P) as it rotates, a rotating shaft (120) to which the disc-shaped disk (110) is coupled, and a mounting part (130) to which the rotating shaft (120) is rotatably mounted. In addition, the butterfly valve (100) according to an embodiment of the present invention may further include a stopper part (140), a bearing (160), and a rubber seal (170).

[0025]

[0026] More specifically, the butterfly valve (100) according to an embodiment of the present invention can control the opening and closing of a tube (P). At this time, the butterfly valve (100) is installed in a transfer tube through which the positive material is moved during the manufacturing process of the positive material of a secondary battery, and can control the opening and closing of the transfer tube. That is, for example, the tube (P) through which the butterfly valve (100) controls the opening and closing may be a transfer tube through which the positive material is moved during the manufacturing process of the positive material.

[0027]

[0028] FIG. 3 is a front view showing a disc-shaped disc in a butterfly valve according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing an insertion hole of the disc-shaped disc in a butterfly valve according to an embodiment of the present invention. Here, FIG. 4 is a view of the insertion hole of the disc-shaped disc as seen in FIG. 3 in the Z-axis direction.

[0029] Referring to FIGS. 1, 4, and 5, the disc-shaped disk (110) opens and closes the inside of the tube (P) as it rotates. Additionally, the disc-shaped disk (110) may have an insertion hole (111) formed on the central axis (C) into which a rotation axis (120) is inserted. Here, the central axis (C) may be a direction parallel to the Z-axis direction shown in FIG. 1, for example. At this time, the insertion hole (111) may be formed to penetrate the central axis (C) of the disc-shaped disk (110).

[0030] Additionally, the disc-shaped disk (110) may include, for example, a Teflon material. In this case, the Teflon material may be a fiber made of polytetrafluoroethylene (PTFE).

[0031]

[0032] FIG. 5 is a cross-sectional view showing a butterfly valve according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view showing an enlarged area A in FIG. 5.

[0033] Meanwhile, referring to FIGS. 4 to 6, the disc-shaped disk (110) may include a disc coupling part (113) that forms a square hole in a coupling section (R) provided on the inner surface of the insertion hole (111) and engaged with the rotation axis (120). Here, the disc-shaped disk (110) may be formed in the shape of a disc, and a hole forming part (112) may be formed in which an insertion hole is formed extending in the direction of the central axis (C).

[0034] The disc coupling portion (113) can be configured, for example, in the shape of a square ring in which the inner surface forms a square hole.

[0035] Additionally, the disc coupling part (113) may include an engineering plastic material. In this case, the material of the disc coupling part (113) may be the same material as the material of the stopper cover (144) of the stopper part.

[0036] Accordingly, the disc coupling portion (113) of the disc-shaped disk (110) engaged with the rotation axis (120) is formed of an engineering plastic material, thereby preventing the occurrence of metal foreign matter between the rotation axis (120) and the disc-shaped disk (110) and providing high durability of the coupling portion.

[0037]

[0038] FIG. 7 is a plan view showing the rotation axis in a butterfly valve according to an embodiment of the present invention.

[0039] Referring to FIGS. 1, 6, and 7, a rotation shaft (120) is coupled to the central axis (C) of a disc-shaped disk (110) and rotatably mounted inside a tube (P). Here, the rotation shaft (120) can be inserted into and coupled to the insertion hole (111) of the disc-shaped disk (110). At this time, the rotation shaft (120) can penetrate the disc-shaped disk (110) through the insertion hole (111) and be coupled to the disc-shaped disk (110). That is, the rotation shaft (120) is formed as a single integrated column shape and can be coupled by penetrating the disc-shaped disk (110). Therefore, by rotating the rotation shaft (120), the disc-shaped disk (110) rotates, and the inside of the tube (P) can be opened and closed. At this time, the rotation shaft (120) can be connected to a rotation means that rotates the shaft. Here, the rotation means may be, for example, a wheel or lever connected to a rotation shaft (120) and having a handle formed thereon. Alternatively, the rotation means may be, for other examples, a solenoid valve, an electric motor, or a hydraulic valve connected to a rotation shaft (120).

[0040] Additionally, the rotation axis (120) can be mounted on the mounting part (130) in a form that extends in the vertical direction, for example.

[0041] In addition, the upper and lower parts of the rotating shaft (120) are mounted on the mounting part (130), and the central part can be coupled with a disc-shaped disk (110).

[0042] Meanwhile, the rotation axis (120) may be formed in the shape of a cylinder, for example, but the cross-section may be formed in the shape of a polygon in the section that is coupled to the disc-shaped disk (110). Specifically, the rotation axis (120) is inserted into the insertion hole (111), and a coupling section may be formed between the rotation axis (120) and the insertion hole (111) such that the rotation axis (120) and the disc-shaped disk (110) rotate together without slipping in a portion of the section. Here, the rotation axis (120) may include a shaft coupling part (123) in which the cross-section is formed in a polygon in the coupling section. That is, the shaft coupling part (123) and the disc coupling part (113) are formed in corresponding shapes and coupled together so that the rotation axis (120) and the disc-shaped disk (110) can rotate together without slipping. At this time, the shaft joint (123) may be formed, for example, with a square cross-section.

[0043] Additionally, the rotation axis (120) may include a body (121) and a coating portion (122) coated on the outer surface excluding a part (T) of the body (121). Here, the part (T) of the body (121) that is not coated with the coating portion (122) may be an upper portion (T1) of the body (121) and a coupling portion (T2) in which a disc-shaped disk (110) is located in a coupling section (R) of the body (121). In the rotation axis (120), the body (121) may be made of a metal material, and the coating portion (122) may be made of Teflon material.

[0044]

[0045] Referring to FIGS. 1 and FIGS. 5, the mounting portion (130) has a mounting hole (131) formed therein in which a rotational shaft (120) is rotatably mounted. Here, the mounting hole (131) is formed in a circular shape so as to be able to rotatably support a cylindrical rotational shaft (120). The mounting portion (130) can provide a support body that supports each device (component) of the butterfly valve (100) according to an embodiment of the present invention.

[0046] Additionally, the mounting portion (130) has a stopper receiving groove formed at the top that is connected to the mounting hole (131), the stopper portion (140) is received in the stopper receiving groove, and the side of the stopper portion (140) can be supported on the inner wall of the stopper receiving groove.

[0047] In addition, the mounting portion (130) may have a receiving space formed in the central portion for receiving a disc-shaped disk (110).

[0048] And, the mounting part (130) may include a metal material.

[0049]

[0050] The bearing (160) is positioned between the rotation shaft (120) and the mounting part (130) to support the rotation of the rotation shaft (120) so that it rotates smoothly. Additionally, a plurality of bearings may be provided between the upper and lower parts of the mounting part (130) and the rotation shaft (120).

[0051] The rubber seal (170) is a sealing member made of rubber material and can seal the space between the disc-shaped disk (110) and the mounting part (130).

[0052]

[0053] FIG. 8 is a cross-sectional view showing an enlarged view of area B in FIG. 2, FIG. 9 is a perspective view showing a rotating shaft and a stopper part in a butterfly valve according to an embodiment of the present invention, and FIG. 10 is an exploded perspective view showing a rotating shaft and a stopper part in a butterfly valve according to an embodiment of the present invention.

[0054]

[0055] Referring to FIGS. 1 and FIGS. 8 to 10, a stopper part (140) is provided on the rotation axis (120) to prevent shaking of the rotation axis (120). Here, the stopper part (140) can prevent the rotation axis (120) from shaking in the X and Y axis directions, for example, as shown in FIG. 1.

[0056] Additionally, the stopper portion (140) includes a stopper plate (141) provided on the outer surface of the rotating shaft (120) and a stopper cover (144) that accommodates the stopper plate (141). Here, the stopper cover (144) may be made of a plastic material. In this case, the stopper cover (144) may be made of, for example, an engineering plastic material.

[0057] The stopper plate (141) may include a metal material. The stopper plate (141) may be welded to the rotation axis (120). The stopper plate (141) may be fixed by welding to a part (T) of the body (121) on the rotation axis (120) where the coating portion (122) is not formed.

[0058] The stopper cover (144) may include an upper cover (142) located on the upper side of the stopper plate (141) and a lower cover (143) located on the lower side of the stopper plate (141).

[0059] The upper cover (142) and the lower cover (143) may include, for example, a plastic material. In this case, the upper cover (142) and the lower cover (143) may specifically be made of, for example, an engineering plastic material. Here, the engineering plastic material may be, for example, at least one of polycarbonate (PC), nylon (Nylon)+polyamide (PA), polyacetal (polyoxymethylene (POM) or Acetal), modified polyphenylene oxide (mPPO), and polybutylene terephthalate (PBT). Additionally, the engineering plastic material may be, for other examples, a high-heat-resistant plastic. In this case, the engineering plastic material may specifically be at least one of polysulfone (PSU), polyarylate (PAR), polyetherimide (PEI), polyethersulfone (PES), polyimide (PI), and polyetheretherketone (PEEK).

[0060] The lower cover (143) has a plate receiving groove formed in the upper part for receiving the stopper plate (141), so that it can cover the lower surface and side of the stopper plate (141).

[0061] The upper cover (142) can cover the upper surface of the stopper plate (141) received in the plate receiving groove of the lower cover (143) and the upper surface of the lower cover (143).

[0062]

[0063] In the butterfly valve (100) according to the embodiment of the present invention configured as described above, when a disc-shaped disk (110) is coupled to a rotating shaft (120) and the rotating shaft (120) is rotatably mounted to a mounting part (130), the disk coupling part (113) of the disc-shaped disk (110) engaged with the rotating shaft (120) is formed of an engineering plastic material, thereby preventing the occurrence of metal foreign matter between the rotating shaft (120) and the disc-shaped disk (110) and providing high durability of the coupling part.

[0064] In addition, the stopper cover (144) of the stopper part (140) mounted on the rotating shaft (120) to prevent shaking of the rotating shaft (120) can be formed of a plastic material to prevent the occurrence of metal foreign matter. At this time, the stopper cover (144) is made of an engineering plastic material, so that a component with excellent impact resistance, wear resistance, cold resistance, chemical resistance, electrical insulation, and durability can be provided.

[0065]

[0066] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention, and the invention is not limited thereto. It should be understood that various implementations are possible by those skilled in the art within the technical scope of the present invention.

[0067] In addition, the specific scope of protection of the invention will be clarified by the appended patent claims.

[0068]

[0069] [Explanation of the symbol]

[0070] 100: Butterfly valve

[0071] 110: Disc-shaped disk

[0072] 111: Insertion hole

[0073] 112: Hole forming part

[0074] 113: Disk connection part

[0075] 120: Rotation axis

[0076] 121: Body

[0077] 122: Coating section

[0078] 123: Shaft joint

[0079] 130: Mounting part

[0080] 131: Mounting hole

[0081] 140: Stopper part

[0082] 141: Stopper Plate

[0083] 142: Top cover

[0084] 143: Lower cover

[0085] 144: Stopper cover

[0086] 160: Bearing

[0087] 170: Rubber seal

[0088] C: Central axis

[0089] P: pipe

[0090] R: Joint interval

[0091] T: Part

[0092] T1: Upper part

[0093] T2: Connection part

Claims

1. As a butterfly valve that controls the opening and closing of a pipe, A disc-shaped disk that opens and closes the above tube as it rotates; A rotation axis to which the above-mentioned disc-shaped disk is coupled; and The above-mentioned rotating shaft includes a mounting part rotatably mounted thereon, and The above disc-shaped disk has an insertion hole formed therein into which the rotation axis is inserted, and The above disc-shaped disk includes a disk coupling portion provided on the inner surface of the insertion hole and forming a polygonal hole in a coupling section engaged with the rotation axis, and The above-mentioned rotational axis includes an axial coupling portion in which the cross-section is formed as a polygon in the coupling section, and The above shaft coupling part is coupled to the above disk coupling part, and The above disc coupling part is a butterfly valve comprising an engineering plastic material.

2. In Claim 1, It further includes a stopper part provided on the rotating shaft to prevent shaking of the rotating shaft, and The above stopper part A stopper plate provided on the outer surface of the above-mentioned rotating shaft; and It includes a stopper cover that accommodates the above stopper plate, and The above stopper cover is a butterfly valve containing plastic material.

3. In Claim 2, The above stopper cover is An upper cover located on the upper side of the stopper plate; and It includes a lower cover located on the lower side of the stopper plate, and The above upper cover and the above lower cover are made of engineering plastic material and are butterfly valves.

4. In Claim 3, The above lower cover has a plate receiving groove formed in its upper portion for receiving the stopper plate, and covers the lower surface and side of the stopper plate, and The upper cover is a butterfly valve that covers the upper surface of the stopper plate received in the plate receiving groove of the lower cover and the top of the lower cover.

5. In Claim 3, The above-mentioned rotating shaft includes a body; and a coating portion coated on the outer surface excluding a part of the body, and The above stopper plate is a butterfly valve fixed to a part of the body.

6. In Claim 5, The above stopper plate includes a metal material, and The body of the above-mentioned rotating shaft includes a metal material, and The above stopper plate is a butterfly valve welded to the above rotating shaft.

7. In Claim 5, The above coating portion is a butterfly valve containing Teflon material.

8. In Claim 2, The above mounting part has a stopper receiving groove formed at the top, and The stopper part is received in the stopper receiving groove, and A butterfly valve in which the side of the stopper portion is supported by the inner wall of the stopper receiving groove.

9. In Claim 1, The above insertion hole is formed to penetrate the central axis of the above disc-shaped disk. The above-mentioned rotating shaft penetrates the above-mentioned disc-shaped disk through the above-mentioned insertion hole and is coupled to the above-mentioned disc-shaped disk in a butterfly valve.

10. In Claim 1, The above-mentioned disc coupling part is configured in the shape of a square ring in which the inner surface forms a square hole, and The above shaft coupling is a butterfly valve in which the cross-section is formed as a square.

11. In Claim 1, The above-mentioned mounting part is a butterfly valve comprising a metal material.

12. In Claim 1, The above disc-shaped disc is a butterfly valve containing Teflon material.

13. In any one of claims 1 to 12, The above butterfly valve is A butterfly valve installed in a transfer pipe through which the cathode material is transported during the manufacturing process of the cathode material of a secondary battery.

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