Impact-resistant butterfly valve

Abstract

The utility model relates to the field of butterfly valves, and provides an impact-resistant butterfly valve which comprises a valve body, the valve body is made of cast iron materials, the outer side of the valve body is coated with paint, a valve rod is rotationally installed in the valve body, the bottom of the valve rod is connected with a connecting rod, a butterfly plate is fixedly installed on the outer side of the connecting rod, and a conical pipe is installed at one end of the inner side of the valve body through a bolt. A conical pipe is installed at one end inside the valve body, the conical pipe is made of stainless steel materials, a plurality of first round holes are formed in the circumferential portion of the conical pipe, and a plurality of second round holes are formed in one end face of the conical pipe. And internal water can be cut and refined, impact force is reduced, water flow is prevented from impacting the dish plate, deformation of the dish plate is avoided, and therefore the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of butterfly valves and relates to an impact-resistant butterfly valve. Background Art

[0002] A butterfly valve, also called a flap valve, is a simple-structured regulating valve. The butterfly valve used for the on-off control of the medium in a low-pressure pipeline refers to a valve whose closing member is a disc and rotates around the valve shaft to achieve opening and closing.

[0003] The butterfly valve realizes the opening and closing of the internal passage of the valve body by rotating the internal disc plate. Since the water inside has great energy, it has a great impact on the disc plate. After a long time of impact, the disc plate may be deformed, resulting in the valve body not closing tightly. Content of the Utility Model

[0004] The purpose of the utility model is to provide an impact-resistant butterfly valve, which solves the problem that the butterfly valve realizes the opening and closing of the internal passage of the valve body by rotating the internal disc plate. Since the water inside has great energy, it has a great impact on the disc plate. After a long time of impact, the disc plate may be deformed, resulting in the valve body not closing tightly.

[0005] The technical solution of the utility model is realized as follows: It includes a valve body made of cast iron material and painted on its outer side. A valve stem is rotatably installed inside the valve body. The bottom of the valve stem is connected with a connecting rod, and a disc plate is fixedly installed on the outer side of the connecting rod. One end of the inner side of the valve body is bolted with a conical pipe made of stainless steel material. A plurality of round holes I are arranged on the circumferential part of the conical pipe, and a plurality of round holes II are arranged on one end face of the conical pipe.

[0006] As a preferred solution of the utility model, a fixing ring is fixedly installed on the other end face of the conical pipe. Installation holes are arranged on the circumferential part of the fixing ring. The fixing ring and the conical pipe are of an integral structure and are integrally formed by pressure deformation.

[0007] As a preferred solution of the utility model, flanges are respectively arranged at both outer ends of the valve body. The flanges and the valve body are of an integral structure and are formed by casting.

[0008] As a preferred solution of the utility model, fixing holes are arranged at the outer ends of the flanges and are processed by milling. A sealing groove is arranged in the middle of the flange end face, and a rubber pad is installed in the sealing groove.

[0009] As a preferred solution of the utility model, a fixing body is installed on the upper part of the circumferential outer side of the connecting rod and is installed on the upper part of the valve body through a gland. External threads are arranged at the bottom of the gland.

[0010] As a preferred embodiment of the present utility model, sealing rings are respectively connected to both ends inside the valve body through bolts. The sealing rings are installed outside the disc, and a wear-resistant coating is provided on the inner side of the sealing rings.

[0011] As a preferred embodiment of the present utility model, a handle is installed on the valve stem through a fixing bolt, and a protective sleeve is installed outside the handle. The protective sleeve is made of rubber material, and an anti-slip position is provided on the outside of the protective sleeve.

[0012] As a preferred embodiment of the present utility model, a rotating rod is fixedly installed at the lower part of the connecting rod. The rotating rod is rotatably installed on a rotating seat, and the rotating seat is fixedly installed at the lower inner side of the valve body. Both the rotating rod and the rotating seat are made of stainless steel material, which can achieve rust prevention.

[0013] Beneficial effects of an impact-resistant butterfly valve of the present utility model: A conical pipe is installed at one end inside the valve body of the present utility model. The conical pipe can cut and refine the internal water by means of a plurality of round holes one on the circumferential part and a round hole two on the end face, reduce the impact force, prevent the water flow from impacting the disc, avoid deformation of the disc, and thus ensure the sealing effect. Description of the Drawings

[0014] Figure 1 It is the overall structure diagram of the embodiment of the present utility model;

[0015] Figure 2 It is the flange structure diagram of the embodiment of the present utility model;

[0016] Figure 3 It is the handle structure diagram of the embodiment of the present utility model;

[0017] Figure 4 It is the back structure diagram of the protective sleeve of the embodiment of the present utility model;

[0018] Figure 5 It is the front structure diagram of the protective sleeve of the embodiment of the present utility model;

[0019] In the figure: 1. Valve body; 2. gland; 3. valve stem; 4. fixing bolt; 5. handle; 6. fixed body; 7. connecting rod; 8. disc; 9. sealing ring; 10. rotating rod; 11. rotating seat; 12. flange; 13. protective sleeve; 14. round hole one; 15. fixing hole; 16. sealing groove; 17. conical pipe; 18. fixing ring; 19. round hole two; 20. mounting hole. Detailed Implementation Modes

[0020] As Figures 1 to 5As shown in the figure, the utility model discloses an impact-resistant butterfly valve. The adopted technical solution is as follows: it includes a valve body 1. A valve stem 3 is rotatably installed inside the valve body 1. The bottom of the valve stem 3 is connected to a connecting rod 7. A disc plate 8 is fixedly installed on the outer side of the connecting rod 7. One end of the inner side of the valve body 1 is bolted with a conical pipe 17. A plurality of first round holes 14 are arranged on the circumferential part of the conical pipe 17, and a plurality of second round holes 19 are arranged on one end face of the conical pipe 17. In the utility model, a conical pipe 17 is installed at one end inside the valve body 1. The conical pipe 17 can cut and refine the internal water by means of the plurality of first round holes 14 on the circumferential part and the second round holes 19 on the end face, reduce the impact force, prevent the water flow from impacting the disc plate 8, and avoid the deformation of the disc plate 8, thereby ensuring the sealing effect.

[0021] A fixing ring 18 is fixedly installed on the other end face of the conical pipe 17. Installation holes 20 are arranged on the circumferential part of the fixing ring 18. The fixing ring 18 is installed inside the valve body 1 and is used for installing the conical pipe 17 inside the valve body 1.

[0022] Flanges 12 are respectively arranged at both outer ends of the valve body 1. The flanges 12 are used to connect external pipelines to realize the control of the on-off of the liquid.

[0023] Fixing holes 15 are arranged at the outer ends of the flanges 12. The fixing holes 15 are used for pipeline connection through connecting bolts. A sealing groove 16 is arranged in the middle of the end face of the flanges 12. The sealing groove 16 is used for installing a gasket to realize a tight connection between the pipeline and the flanges 12.

[0024] A fixing body 6 is installed on the upper part of the circumferential outer side 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 for fixing the fixing body 6 to realize the installation of the fixing body 6 on the upper part of the valve body 1.

[0025] Sealing rings 9 are respectively connected to both ends inside the valve body 1 through bolts. The sealing rings 9 are installed on the outer side of the disc plate 8. The sealing rings 9 are used for sealing between the disc plate 8 and the inside of the valve body 1.

[0026] A handle 5 is installed on the valve stem 3 through a fixing bolt 4. A protective sleeve 13 is installed on the outer side of the handle 5. When turning the handle 5, it can prevent the hand from directly contacting the handle 5. The anti-slip pattern on the outer side of the handle sleeve 14 can be used for anti-slip.

[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 part of the inner side of the valve body 1. The rotating rod 10 rotates in the rotating seat 11, which can provide stable support for the rotation of the disc plate 8.

[0028] Working principle of this impact-resistant butterfly valve: When an impact-resistant butterfly valve is in use, turn the handle 5 to make the valve stem 3 rotate within the fixed body 6, driving the connecting rod 7 below to rotate, causing the disc 8 to rotate, and the rotating rod 10 to rotate within the rotating seat 11, completing a 90-degree rotation of the disc 8 to connect the flow channel inside the valve body 1. Then the butterfly valve can achieve the flow of water in the pipeline. The liquid enters the conical tube 17. Multiple round holes 14 on the circumferential part of the conical tube 17 and the round hole 19 on the end face of the conical tube 17 can cut and refine the internal water, reduce the impact force, prevent the water flow from impacting the disc 8, and achieve impact resistance.

[0029] Although the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention, and modifications or deformations that do not involve creative labor are still within the protection scope of the present invention.

Claims

1. An impact-resistant butterfly valve, characterized in that: The invention comprises a valve body (1), 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 conical tube (17) is bolted to one end of the inner side of the valve body (1), a plurality of circular holes (14) are arranged on the circumference of the conical tube (17), and a plurality of circular holes (19) are arranged on one end face of the conical tube (17).

2. The impact-resistant butterfly valve according to claim 1, characterized in that: A fixing ring (18) is fixedly mounted on the other end surface of the conical tube (17), and a mounting hole (20) is arranged on the circumference of the fixing ring (18).

3. The impact-resistant butterfly valve according to claim 1, characterized in that: Flanges (12) are respectively provided at the two outer ends of the valve body (1).

4. The impact-resistant butterfly valve according to claim 3, 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).

5. The impact-resistant 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).

6. The impact-resistant 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).

7. The impact-resistant 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 (13) is mounted on the outside of the handle (5).

8. The impact-resistant butterfly valve according to claim 5, 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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