Electric butt-clamping soft sealing butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to an electric butt-clamping soft sealing butterfly valve. Comprising a valve body, two side shells and two sealing assemblies. The valve body comprises a valve body shell, an electric actuating mechanism and a valve plate, the two side shells are arranged at the two ends of the valve body shell respectively, the other ends of the two side shells are communicated with a water inlet end connecting pipe and a water outlet end connecting pipe respectively, and the two sealing assemblies are installed on the inner sides of the two side shells respectively. The sealing assembly comprises a sealing baffle, a sealing gasket, a connecting rod and a pushing rod. The check valve is good in sealing effect, direct impact force of water flow on the valve plate can be reduced, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric clamped soft-sealed butterfly valve. Background Art

[0002] The butterfly valve is a high-pressure recovery valve with strong flow capacity and small medium pressure drop. It is usually installed on pipes with larger diameters. Compared with other types of valves of the same caliber, the required electric actuator capacity is much smaller and can save a lot of installation costs. Therefore, it is widely used in tap water systems. As a type of butterfly valve, the electric wafer butterfly valve is composed of an electric actuator and a wafer butterfly valve. It uses electrical energy as power to drive the valve stem to rotate through the electric actuator, and then drives the valve plate to rotate to realize the opening and closing action of the wafer butterfly valve, thereby throttling the water in the pipeline and adjusting the flow rate.

[0003] A Chinese patent with authorization announcement number CN208793649U discloses an electric soft-seal wafer butterfly valve for a smart water meter. An annular sealing ring is provided between the valve body and the valve plate and is clamped to the inner wall of the valve body. The sealing ring has a U-shaped cross-section, and each end thereof is provided with a clamping portion bent inward. Both sides of the inner wall of the valve body are provided with mounting grooves matching the clamping portion. A through hole is provided at the top and bottom of the sealing ring, and a number of serrated protrusions are provided on the inner wall of the through hole. The ear holes of the upper ear and the lower ear are both elliptical and inclined.

[0004] The above-mentioned patent still has the following technical defects: only one sealing structure is provided on the valve body, and its sealing performance is weak, and after the valve is opened and closed, the valve plate will be directly impacted by the water flow, which may easily cause the valve plate to loosen, thereby reducing the service life of the valve. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes an electric clamped soft-sealed butterfly valve.

[0006] The technical solution of the utility model is an electric clamped soft-sealed butterfly valve, comprising:

[0007] The valve body includes a valve body shell, an electric actuator and a valve plate. The valve plate is rotatably mounted inside the valve body shell. The electric actuator is mounted on the valve body shell and is used to drive the valve plate to rotate so as to adjust the opening of the valve plate.

[0008] Two side shells, the two side shells are respectively arranged at the two ends of the valve body shell, and the two side shells are connected to the inside of the valve body shell, and the other ends of the two side shells are respectively connected to the water inlet end connecting pipe and the drainage end connecting pipe;

[0009] Two sets of sealing assemblies are respectively installed on the inner sides of the two side shells. The sealing assemblies include a sealing baffle, a sealing gasket, a connecting rod and a push rod. The sealing baffle is arranged on the inner side of the side shell. The sealing gasket is arranged on the sealing baffle and adjacent to a side of the valve body shell. The push rod is fixedly connected to the sealing baffle through the connecting rod. An elastic assembly is installed between the sealing baffle and the inner wall of the side shell.

[0010] Preferably, rolling assemblies are installed on both sides of the valve plate, and the rolling assemblies include two fixed plates fixed on the valve plate, a mounting shaft arranged between the two fixed plates, and balls rotatably installed on the mounting shaft, and the two balls are respectively in contact with the push rods on both sides.

[0011] Preferably, the elastic component includes a guide rod, a spring and a limit block, the guide rod is fixed on the inner wall of the side shell, the other end of the guide rod movably penetrates the sealing baffle and is fixedly connected to the limit block, and the spring sleeve is installed on the guide rod.

[0012] Preferably, the sealing baffle covers an opening on the side shell body adjacent to one end of the valve body shell, and the diameter of the opening is not less than the inner diameter of the valve body shell.

[0013] Preferably, the extension direction of the push rod is perpendicular to the rotation axis direction of the valve plate.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects: when the electric actuator drives the valve disc to rotate and open, the valve disc rotates to drive the push rods on both sides to move away from each other, the push rod drives the connecting rod to move, and the connecting rod pushes the sealing baffle to move, so that the opening of the side shell adjacent to the valve body shell is exposed. At this time, water enters the interior of the valve body shell through the water inlet end connecting pipe. The provided sealing baffle can weaken the impact of water flow on the valve disc, thereby extending the service life of the valve disc. When the valve disc is closed, the sealing baffle is reset and the two ends of the valve body shell are closed under the elastic force of the elastic component, thereby extending the sealing performance of the entire valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a cross-sectional structural diagram of the utility model.

[0017] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A.

[0018] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point B.

[0019] Figure numerals: 1. valve body shell; 2. electric actuator; 3. side shell; 41. water inlet end connecting pipe; 42. water discharge end connecting pipe; 5. valve plate; 6. sealing baffle; 7. sealing gasket; 8. connecting rod; 9. push rod; 10. guide rod; 11. spring; 12. limit block; 13. ball; 14. fixing plate; 15. mounting shaft. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] like Figure 1-Figure 3 As shown, the electric clamped soft-sealed butterfly valve proposed in this embodiment includes a valve body, two side shells 3 and two sets of sealing components;

[0022] The valve body comprises a valve body shell 1 , an electric actuator 2 and a valve plate 5 . The valve plate 5 is rotatably mounted inside the valve body shell 1 . The electric actuator 2 is mounted on the valve body shell 1 and is used to drive the valve plate 5 to rotate so as to adjust the opening of the valve plate 5 .

[0023] The two side shells 3 are respectively arranged at the two ends of the valve body shell 1, and the two side shells 3 are connected to the interior of the valve body shell 1, and the other ends of the two side shells 3 are respectively connected to the water inlet end connecting pipe 41 and the drainage end connecting pipe 42.

[0024] Two groups of sealing components are respectively installed on the inner sides of the two side shells 3, and the sealing components include a sealing baffle 6, a sealing gasket 7, a connecting rod 8 and a pushing rod 9. The sealing baffle 6 is arranged on the inner side of the side shell 3, and the sealing baffle 6 covers the opening on the side shell 3 adjacent to the valve body shell 1. The diameter of this opening is not less than the inner diameter of the valve body shell 1. The arrangement of the above structure can reduce the impact on water pressure. The sealing gasket 7 is arranged on the sealing baffle 6 and on a side surface adjacent to the valve body shell 1. The pushing rod 9 is fixedly connected to the sealing baffle 6 through the connecting rod 8. The extending direction of the pushing rod 9 is perpendicular to the rotating axis direction of the valve plate 5. An elastic component is installed between the sealing baffle 6 and the inner wall of the side shell 3. The elastic component includes a guide rod 10, a spring 11 and a limit block 12. The guide rod 10 is fixed on the inner wall of the side shell 3. The other end of the guide rod 10 movably passes through the sealing baffle 6 and is fixedly connected to the limit block 12. The spring 11 is sleeved and installed on the guide rod 10.

[0025] In this embodiment, when the electric actuator 2 drives the valve disc 5 to rotate and open, the valve disc 5 rotates to drive the push rods 9 on both sides to move away from each other, the push rod 9 drives the connecting rod 8 to move, and the connecting rod 8 pushes the sealing baffle 6 to move, so that the opening of the side shell 3 adjacent to the valve body shell 1 is exposed. At this time, water enters the interior of the valve body shell 1 through the water inlet end connecting pipe 41. The provided sealing baffle 6 can weaken the impact of the water flow on the valve disc 5, thereby extending the service life of the valve disc 5. When the valve disc 5 is closed, the sealing baffle 6 is reset under the elastic force of the elastic component and the two ends of the valve body shell 1 are closed, thereby extending the sealing performance of the entire valve body.

[0026] Embodiment 2

[0027] like Figure 4 As shown, this embodiment proposes an electric clamped soft-sealed butterfly valve. Compared with the first embodiment, in this embodiment, rolling assemblies are installed on both sides of the valve plate 5. The rolling assemblies include two fixed plates 14 fixed on the valve plate 5, a mounting shaft 15 arranged between the two fixed plates 14, and balls 13 rotatably installed on the mounting shaft 15, and the two balls 13 are respectively in contact with the push rods 9 on both sides.

[0028] In this embodiment, the ball 13 is in contact with the push rod 9 , so that friction between the valve plate 5 and the push rod 9 can be avoided.

[0029] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An electric clamped soft-seal butterfly valve, characterized in that: include: A valve body, the valve body comprising a valve body shell (1), an electric actuator (2) and a valve plate (5), the valve plate (5) being rotatably mounted on the inner side of the valve body shell (1), the electric actuator (2) being mounted on the valve body shell (1) and used for driving the valve plate (5) to rotate so as to adjust the opening of the valve plate (5); Two side shells (3), the two side shells (3) are respectively arranged at two ends of the valve body shell (1), and the two side shells (3) are both connected to the interior of the valve body shell (1), and the other ends of the two side shells (3) are respectively connected to a water inlet connecting pipe (41) and a water discharge connecting pipe (42); Two sets of sealing components are respectively installed on the inner sides of the two side shells (3). The sealing components include a sealing baffle (6), a sealing gasket (7), a connecting rod (8) and a pushing rod (9). The sealing baffle (6) is arranged on the inner side of the side shell (3). The sealing gasket (7) is arranged on the sealing baffle (6) and is adjacent to a side surface of the valve body shell (1). The pushing rod (9) is fixedly connected to the sealing baffle (6) through the connecting rod (8). An elastic component is installed between the sealing baffle (6) and the inner wall of the side shell (3).

2. The electric wafer soft-seal butterfly valve according to claim 1 is characterized in that: Rolling assemblies are installed on both sides of the valve plate (5), and the rolling assemblies include two fixed plates (14) fixedly arranged on the valve plate (5), a mounting shaft (15) arranged between the two fixed plates (14), and balls (13) rotatably mounted on the mounting shaft (15), and the two balls (13) are respectively in contact with the push rods (9) on both sides.

3. The electric wafer soft-seal butterfly valve according to claim 1 is characterized in that: The elastic component comprises a guide rod (10), a spring (11) and a limit block (12); the guide rod (10) is fixed on the inner wall of the side shell (3); the other end of the guide rod (10) movably penetrates the sealing baffle (6) and is fixedly connected to the limit block (12); and the spring (11) is sleeved and mounted on the guide rod (10).

4. The electric wafer soft-seal butterfly valve according to claim 1 is characterized in that: The sealing baffle (6) covers an opening on the side shell (3) adjacent to one end of the valve body shell (1), and the diameter of the opening is not less than the inner diameter of the valve body shell (1).

5. The electric wafer soft-seal butterfly valve according to claim 1 is characterized in that: The extension direction of the push rod (9) is perpendicular to the rotation axis direction of the valve plate (5).

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