Noise reduction type butterfly valve

Abstract

The utility model relates to the field of butterfly valves, and provides a noise reduction type butterfly valve which comprises a valve body, a valve rod is rotationally installed in the valve body, a connecting rod is connected to the bottom of the valve rod, a butterfly plate is fixedly installed on the outer side of the connecting rod, a plurality of noise reduction rings are fixedly installed at one end of the inner side of the valve body, round holes are formed in the middles of the noise reduction rings, and a noise reduction interlayer is fixedly installed on the outer side of the valve body. The noise reduction interlayer comprises a sound insulation cotton layer, a foam layer and an outer layer, the noise reduction ring is fixedly installed at one end in the valve body, the noise reduction ring can reduce noise layer by layer, noise reduction of the butterfly valve is achieved, the noise reduction interlayer is installed on the outer side of the valve body, and the noise reduction effect can be further achieved through the interval effect of the sound insulation cotton layer and the foam layer.

Description

Technical Field

[0001] The utility model belongs to the field of butterfly valves and relates to a noise reduction type butterfly valve. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member is a disc that rotates around the valve axis to achieve opening and closing.

[0003] When the butterfly valve is in use, when the water inside is flowing, the water will rub against the inner wall of the valve body, causing a lot of noise, especially the disc plate in the middle of the inner side. The disc plate will produce different noises due to the different sizes of opening and closing, which will cause great trouble to the staff. Utility Model Content

[0004] The purpose of the utility model is to provide a noise-reducing butterfly valve, which solves the problem that when the water inside the butterfly valve is in use, the water will rub against the inner wall of the valve body when it flows, generating relatively large noise, especially the disc plate in the middle of the inner side. The disc plate will generate different noises due to the different sizes of opening and closing, which will cause great trouble to the staff.

[0005] The technical solution of the utility model is achieved as follows: it includes a valve body, the valve body is made of cast iron material, the outer side of which is painted, a valve stem is rotatably installed inside the valve body, a connecting rod is connected to the bottom of the valve stem, a disc plate is fixedly installed on the outer side of the connecting rod, the disc plate is made of stainless steel material, a plurality of noise reduction rings are fixedly installed at one end of the inner side of the valve body, a circular hole is provided in the middle of the noise reduction ring, a noise reduction interlayer is fixedly installed on the outer side of the valve body, and the noise reduction interlayer includes a sound insulation cotton layer, a foam layer and an outer layer.

[0006] As a preferred solution of the utility model, flanges are respectively arranged at two outer ends of the valve body, and the flange and the valve body are an integrated structure formed by casting.

[0007] As a preferred solution of the utility model, a fixing hole is provided at the outer end of the flange, the fixing hole is processed by a milling process, a sealing groove is provided in the middle of the flange end face, and a rubber pad is installed in the sealing groove.

[0008] As a preferred solution of the utility model, a fixing body is installed on the upper part of the outer side of the circumference of the connecting rod, and the fixing body is installed on the upper part of the valve body through a gland, and an external thread is provided on the bottom of the gland.

[0009] As a preferred solution of the utility model, sealing rings are respectively connected at both ends of the valve body by bolts, the sealing rings are installed on the outside of the disc plate, and a wear-resistant coating is provided on the inside of the sealing rings.

[0010] As a preferred solution of the utility model, a handle is installed on the valve stem through a fixing bolt, a protective sleeve is installed on the outside of the handle, the protective sleeve is made of rubber material, and an anti-slip position is arranged on the outside of the protective sleeve.

[0011] As a preferred solution of the utility model, a connecting ring is provided at the outer end of the noise reduction ring, and the connecting ring is fixedly installed on the outer end of the noise reduction ring by welding.

[0012] As a preferred solution of the utility model, a rotating rod is fixedly installed at the lower part of the connecting rod, the rotating rod is rotatably installed on the rotating seat, the rotating seat is fixedly installed at the lower inner part of the valve body, and the rotating rod and the rotating seat are both made of stainless steel material, which can be rust-proof.

[0013] The utility model has the following beneficial effects: a noise reduction ring is fixedly installed at one end of the valve body, the noise reduction ring can reduce the noise layer by layer, thereby achieving the noise reduction of the butterfly valve; a noise reduction insulating layer is installed on the outer side of the valve body, and the noise reduction effect can be further achieved by utilizing the spacing effect of the sound insulation cotton layer and the foam layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0015] Figure 2 This is a structural diagram of a noise reduction barrier layer according to an embodiment of the utility model;

[0016] Figure 3 This is a flange structure diagram of an embodiment of the utility model;

[0017] Figure 4 This is a handle structure diagram of an embodiment of the utility model;

[0018] Figure 5 This is a structural diagram of a noise reduction ring according to an embodiment of the utility model;

[0019] In the figure: 1. valve body; 2. gland; 3. valve stem; 4. fixing bolt; 5. handle; 6. fixing body; 7. connecting rod; 8. disc plate; 9. sealing ring; 10. rotating rod; 11. rotating seat; 12. flange; 13. noise reduction ring; 14. protective cover; 15. fixing hole; 16. sealing groove; 17. noise reduction interlayer; 1701. sound insulation cotton layer; 1702. foam layer; 1703. outer layer; 18. round hole; 19. connecting ring. DETAILED DESCRIPTION

[0020] like Figures 1 to 5As shown, the utility model discloses a noise reduction butterfly valve, and the technical scheme adopted is, comprising a valve body 1, a valve stem 3 is rotatably installed inside the valve body 1, a connecting rod 7 is connected to the bottom of the valve stem 3, a disc plate 8 is fixedly installed on the outside of the connecting rod 7, a plurality of noise reduction rings 13 are fixedly installed on one end of the inner side of the valve body 1, a circular hole 18 is arranged in the middle of the noise reduction ring 13, a noise reduction interlayer 17 is fixedly installed on the outside of the valve body 1, the noise reduction interlayer 17 comprises a sound insulation cotton layer 1701, a foam layer 1702 and an outer layer 1703, the utility model has a noise reduction ring 13 fixedly installed on one end inside the valve body 1, the noise reduction ring 13 can reduce the noise layer by layer, so as to realize the noise reduction of the butterfly valve, a noise reduction interlayer 17 is installed on the outside of the valve body, and the noise reduction effect can be further realized by utilizing the spacing effect of the sound insulation cotton layer 1701 and the foam layer 1702.

[0021] Flanges 12 are respectively provided at the two outer ends of the valve body 1, and the flanges 12 are used to connect external pipelines to achieve the control of liquid on and off.

[0022] A fixing hole 15 is provided at the outer end of the flange 12, and the fixing hole 15 is used for pipeline connection through a connecting bolt. A sealing groove 16 is provided in the middle of the end face of the flange 12, and the sealing groove 16 is used to install a sealing gasket to achieve a tight connection between the pipeline and the flange 12.

[0023] A fixing body 6 is installed on the upper part of the outer circumference of the connecting rod 7 . The fixing body 6 is installed on the upper part of the valve body 1 through a gland 2 . The gland 2 is used to fix the fixing body 6 , so that the fixing body 6 is installed on the upper part of the valve body 1 .

[0024] The two ends of the valve body 1 are connected with sealing rings 9 by bolts. The sealing ring 9 is installed on the outside of the disc plate 8. The sealing ring 9 is used for sealing the disc plate 8 and the inside of the valve body 1.

[0025] The valve stem 3 is mounted with a handle 5 via a fixing bolt 4. A protective cover 14 is mounted on the outside of the handle 5 to prevent the hand from directly contacting the handle 5 when the handle 5 is turned. The anti-skid pattern on the outside of the handle cover 14 can be used to prevent slipping.

[0026] A connecting ring 19 is provided at the outer end of the noise reduction ring 13 . The connecting ring 19 is installed inside the valve body 1 to enable the noise reduction ring 13 to be installed inside the valve body 1 .

[0027] A rotating rod 10 is fixedly installed at the lower part of the connecting rod 7. The rotating rod 10 is rotatably installed on a rotating seat 11. The rotating seat 11 is fixedly installed at the lower inner part of the valve body 1. The rotating rod 10 rotates in the rotating seat 11 to provide stability support for the rotation of the disc plate 8.

[0028] The working principle of this noise reduction butterfly valve: When a noise reduction butterfly valve is in use, turn the handle 5 to rotate the valve stem 3 in the fixed body 6, drive the connecting rod 7 below to rotate, rotate the disc plate 8, and rotate the rotating rod 10 in the rotating seat 11 to complete the rotation of the disc plate 8 by 90 degrees, so that the internal flow channel of the valve body 1 is connected, and the butterfly valve can realize the flow of water in the pipeline. The liquid enters multiple noise reduction rings 13, and the internal noise reduction is realized through the action of the noise reduction rings 13. The spacing effect of the sound insulation cotton layer 1701 and the foam layer 1702 is utilized to reduce the noise of the outside of the valve body 1 through the noise reduction interlayer 17.

[0029] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A noise reduction butterfly valve, characterized in that: The invention comprises a valve body (1), wherein a valve stem (3) is rotatably mounted inside the valve body (1), a connecting rod (7) is connected to the bottom of the valve stem (3), a disc plate (8) is fixedly mounted on the outside of the connecting rod (7), a plurality of noise reduction rings (13) are fixedly mounted on one end of the inner side of the valve body (1), a circular hole (18) is provided in the middle of the noise reduction ring (13), and a noise reduction interlayer (17) is fixedly mounted on the outer side of the valve body (1), wherein the noise reduction interlayer (17) comprises a sound insulation cotton layer (1701), a foam layer (1702) and an outer layer (1703).

2. A noise reduction butterfly valve according to claim 1, characterized in that: Flanges (12) are respectively provided at the two outer ends of the valve body (1).

3. A noise reduction butterfly valve according to claim 2, characterized in that: The outer end of the flange (12) is provided with a fixing hole (15), and the middle part of the end surface of the flange (12) is provided with a sealing groove (16).

4. The noise reduction butterfly valve according to claim 1, characterized in that: A fixing body (6) is installed on the upper part of the outer circumference of the connecting rod (7), and the fixing body (6) is installed on the upper part of the valve body (1) through a gland (2).

5. The noise reduction butterfly valve according to claim 1, characterized in that: The two ends of the valve body (1) are respectively connected with sealing rings (9) by bolts, and the sealing rings (9) are installed on the outside of the disc plate (8).

6. The noise reduction butterfly valve according to claim 1, characterized in that: The valve stem (3) is mounted with a handle (5) via a fixing bolt (4), and a protective sleeve (14) is mounted on the outside of the handle (5).

7. The noise reduction butterfly valve according to claim 6, characterized in that: The outer end of the noise reduction ring (13) is provided with a connecting ring (19).

8. The noise reduction butterfly valve according to claim 1, characterized in that: A rotating rod (10) is fixedly mounted on the lower part of the connecting rod (7), the rotating rod (10) is rotatably mounted on a rotating seat (11), and the rotating seat (11) is fixedly mounted on the lower inner part of the valve body (1).

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