Butterfly valve with self-locking mechanism

Abstract

The utility model discloses a butterfly valve with a self-locking mechanism, which relates to the technical field of butterfly valves, and comprises a valve body and a valve shaft, flange plates are arranged on the left side and the right side of the valve body, a butterfly plate is arranged in the valve body, a positioning mechanism is arranged right above the valve body, and the positioning mechanism is used for positioning or detaching equipment for opening and closing the butterfly valve. The butterfly valve is convenient to open and close electrically or manually, a locking mechanism is arranged in the positioning mechanism, and the locking mechanism conducts meshing locking on the top end of the valve shaft, so that the situation that the valve shaft and the valve clack are opened or closed due to mistaken touch is avoided. In the using process, the motor drives the driving gear to rotate, the driving gear drives the transmission disc to rotate, the transmission disc drives the driving shaft and the butterfly plate which are arranged below the transmission disc to rotate, then the rotating angle of the laminated plate can be accurately controlled, meanwhile, the driving gear is used for meshing the transmission disc, and therefore the rotating angle of the laminated plate can be accurately controlled. And then the transmission disc is subjected to self-locking treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and particularly relates to a butterfly valve with a self-locking mechanism. Background Art

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

[0003] At present, the existing sealed butterfly valve does not have a locking mechanism, and is prone to accidental touch during use, resulting in the opening or closing of the valve shaft and the valve flap, which has an adverse impact on people's normal use. The electric butterfly valve has the advantages of high automation, simple operation, accurate control, etc. However, once a power failure occurs, effective opening and closing operations cannot be performed. Summary of the Invention

[0004] The purpose of the utility model is to provide a butterfly valve with a self-locking mechanism to solve the above-mentioned defects in the prior art.

[0005] A butterfly valve with a self-locking mechanism includes a valve body and a valve shaft. Flange plates are arranged on the left and right sides of the valve body. A butterfly plate is arranged inside the valve body. A positioning mechanism is arranged directly above the valve body. The positioning mechanism positions or disassembles the equipment for opening and closing the butterfly valve, facilitating the opening and closing of the butterfly valve electrically or manually. A locking mechanism is arranged inside the positioning mechanism. The locking mechanism meshes and locks the top end of the valve shaft to prevent accidental touch from causing the valve shaft and the valve flap to open or close.

[0006] Preferably, the positioning mechanism includes a driving tray, a motor, a cover plate, grooves, semi-circular strips, and fastening holes. A cover plate is arranged directly above the driving tray. A motor is connected to the top of the cover plate. Semi-circular strips are symmetrically arranged at the bottom end of the cover plate. The semi-circular strips are equidistantly provided with fastening holes. Grooves are symmetrically opened directly above the driving tray.

[0007] Preferably, the driving tray is connected to the semi-circular strips through the grooves symmetrically opened at the top end.

[0008] Preferably, the locking mechanism includes a transmission disc, a driving gear, a valve shaft, a driving shaft, and a sealing ring gasket. The transmission disc is arranged inside the driving tray. A driving gear is meshed and connected inside the transmission disc. The top end of the driving gear is connected through a driving shaft. The top end of the driving shaft is connected to the output end of the motor. The outer side of the valve shaft is connected through a sealing ring gasket. The sealing ring gasket is arranged inside the valve body.

[0009] Preferably, the transmission disc is connected to the top end of the butterfly plate through the valve shaft connected by a key.

[0010] Preferably, the motor is connected to the driving gear at the output end and then connected to the transmission disc.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. During use, the motor drives the driving gear to rotate, the driving gear drives the transmission disc to rotate, and the transmission disc drives the driving shaft and the butterfly plate arranged below to rotate, thereby facilitating the precise control of the rotation angle of the laminated plate. At the same time, the driving gear meshes with the transmission disc, and then the transmission disc is self-locked to prevent the valve shaft and the valve flap from opening or closing due to accidental touch during use.

[0013] 2. Once the motor in the electric butterfly valve loses power, the valve plate in the electric butterfly valve will stop at any angle. When the equipment is powered off, the operator can separate the bottom half-ring strip of the cover plate from the groove, so that the output end of the motor 5 is separated from the driving gear and the transmission disc, which is convenient for the operator to control the transmission disc, and then timely open or close the valve body, improving the flexibility of valve body control. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the whole utility model.

[0015] Figure 2 It is a side view structural schematic diagram of the valve body in the utility model.

[0016] Figure 3 It is a top view structural schematic diagram of the driving tray in the utility model.

[0017] Figure 4 It is a front sectional structural schematic diagram of the driving tray in the utility model.

[0018] Figure 5 It is a bottom view structural schematic diagram of the cover plate in the utility model.

[0019] Among them:

[0020] 1. Valve body; 2. Flange; 3. Butterfly plate; 4. Driving tray; 5. Motor; 6. Positioning mechanism; 7. Cover plate; 8. Groove; 9. Locking mechanism; 10. Transmission disc; 11. Driving gear; 12. Valve shaft; 13. Half-ring strip; 14. Driving shaft; 15. Sealing gasket; 16. Fastening hole. Specific Embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0022] Such asFigures 1 to 5 As shown in the figure, a butterfly valve with a self-locking mechanism includes a valve body 1 and a valve shaft 12. Flange plates 2 are provided on the left and right sides of the valve body 1. A butterfly plate 3 is arranged inside the valve body 1. A positioning mechanism 6 is provided directly above the valve body 1. The positioning mechanism 6 positions or disassembles the equipment for opening and closing the butterfly valve, facilitating the opening and closing of the butterfly valve electrically or manually. A locking mechanism 9 is arranged inside the positioning mechanism 6. The locking mechanism 9 meshes and locks the top end of the valve shaft 12 to prevent the valve shaft 12 and the valve flap from opening or closing due to accidental contact.

[0023] In this embodiment, the positioning mechanism 6 includes a driving tray 4, a motor 5, a cover plate 7, grooves 8, semi-circular strips 13 and fastening holes 16. A cover plate 7 is arranged directly above the driving tray 4. A motor 5 is connected above the cover plate 7. Semi-circular strips 13 are symmetrically arranged at the bottom end of the cover plate 7. The semi-circular strips 13 are equidistantly provided with fastening holes 16. Grooves 8 are symmetrically opened directly above the driving tray 4, so that the driving gear 11 at the output end of the motor 5 is separated from the transmission disc 10.

[0024] In this embodiment, the driving tray 4 is connected to the semi-circular strips 13 through the symmetrically opened grooves 8 at the top end, and the symmetrically arranged grooves 8 and semi-circular strips 13 are used for limiting and positioning.

[0025] In this embodiment, the locking mechanism 9 includes a transmission disc 10, a driving gear 11, a valve shaft 12, a driving shaft 14 and a sealing ring gasket 15. The transmission disc 10 is arranged inside the driving tray 4. A driving gear 11 is meshed and connected inside the transmission disc 10. The top end of the driving gear 11 is connected through the driving shaft 14. The top end of the driving shaft 14 is connected to the output end of the motor 5. The sealing ring gasket 15 is connected through the outside of the valve shaft 12. The sealing ring gasket 15 is arranged inside the valve body 1. The driving gear 11 meshes with the transmission disc 10, and the rotation angle of the transmission disc 10 is controlled.

[0026] In this embodiment, the transmission disc 10 is connected to the top end of the butterfly plate 3 through the valve shaft 12 connected by a key. The transmission disc 10 drives the butterfly plate 3 to rotate to control the opening angle of the butterfly plate 3.

[0027] In this embodiment, the motor 5 is connected to the transmission disc 10 through the driving gear 11 at the output end. The driving gear 11 meshes with the outside of the transmission disc 10 and simultaneously meshes and locks the transmission disc 10.

[0028] When this butterfly valve with a self-locking mechanism is actually applied, it includes the following working contents:

[0029] Step 1: The operator first passes the valve shaft 12 provided at the top of the valve body 1 through the inside of the driving tray 4, connects the top end of the valve shaft 12 to the bottom end of the transmission disc 10, meshes the driving gear 11 with the driving gear 11 connected to the output end of the motor 5, and installs the motor 5 and the cover plate 7 provided at the bottom end on the surface of the driving tray 4. The semi-circular strip 13 provided at the bottom end of the cover plate 7 is inserted into the groove 8, and the corresponding semi-circular strip 13 is positioned through the groove 8 opened at the top end of the driving tray 4;

[0030] Step 2: During normal use, the motor 5 drives the driving gear 11 to rotate. The driving gear 11 meshes with the inside of the transmission disc 10. The transmission disc 10 drives the valve shaft 12 to rotate, so that the butterfly plate 3 drives the valve shaft 12 to rotate, opening the inside of the valve body 1. At the same time, the pipe fittings are connected by the flange plates 2 on both sides, so that the liquid in the pipe fittings on the other side is directly injected into another set of pipe fittings through the valve body 1;

[0031] Step 3: When the equipment power is cut off, the operator can separate the semi-circular strip 13 at the bottom end of the cover plate 7 from the groove 8, so that the output end of the motor 5, the driving gear 11 and the transmission disc 10 are separated. The operator can hold the outside of the transmission disc 10, drive the valve shaft 12 connected to the bottom end to rotate through the transmission disc 10, and then drive the butterfly plate 3 to rotate through the valve shaft 12 to open or close the valve body 1.

[0032] Therefore, the above-disclosed implementation schemes are illustrative in all aspects and not exclusive. All changes within the scope of the present utility model or equivalent to the present utility model are encompassed by the present utility model.

Claims

1. A butterfly valve with a self-locking mechanism, characterized in that: The valve body (1) comprises a valve body (1) and a valve shaft (12), wherein flanges (2) are arranged on the left and right sides of the valve body (1), a butterfly plate (3) is arranged inside the valve body (1), a positioning mechanism (6) is arranged directly above the valve body (1), the positioning mechanism (6) is used to position or disassemble the butterfly valve opening and closing equipment, so as to facilitate the opening and closing of the butterfly valve by electric or manual means, a locking mechanism (9) is arranged inside the positioning mechanism (6), the locking mechanism (9) is used to engage and lock the top end of the valve shaft (12), so as to avoid accidental contact causing the valve shaft (12) and the valve disc to open or close; The positioning mechanism (6) comprises a driving tray (4), a motor (5), a cover plate (7), a groove (8), a semi-ring strip (13) and a fastening hole (16); the cover plate (7) is arranged directly above the driving tray (4); the motor (5) is connected directly above the cover plate (7); semi-ring strips (13) are symmetrically arranged at the bottom end of the cover plate (7); fastening holes (16) are formed through the semi-ring strips (13) at equal intervals; and the grooves (8) are symmetrically formed directly above the driving tray (4); The locking mechanism (9) comprises a transmission plate (10), a driving gear (11), a valve shaft (12), a driving shaft (14), and a sealing ring gasket (15); the transmission plate (10) is arranged inside the driving tray (4); the interior of the transmission plate (10) is meshingly connected with the driving gear (11); the top end of the driving gear (11) is connected to the driving shaft (14); the top end of the driving shaft (14) is connected to the output end of the motor (5); the outer side of the valve shaft (12) is connected to the sealing ring gasket (15); and the sealing ring gasket (15) is arranged inside the valve body (1).

2. A butterfly valve with a self-locking mechanism according to claim 1, characterized in that: The driving tray (4) is connected to the semi-ring strip (13) via a groove (8) symmetrically provided at the top.

3. A butterfly valve with a self-locking mechanism according to claim 1, characterized in that: The transmission disc (10) is connected to the top end of the butterfly plate (3) via a key-connected valve shaft (12).

4. A butterfly valve with a self-locking mechanism according to claim 1, characterized in that: The motor (5) is connected to the transmission disc (10) via a driving gear (11) at its output end.

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