Electric butterfly valve

Abstract

The utility model discloses an electric butterfly valve which comprises a valve body, a valve plate, a driving shaft, a transmission case, an electric actuator and a manual auxiliary crank. A through groove is formed in the bottom of the valve body, the valve plate is arranged in the through groove, the driving shaft is rotationally arranged in the valve body, the transmission box is connected to the top of the valve body, and the electric actuator is connected to the top of the transmission box. The upper end of the driving shaft is connected with the electric actuator, and the lower end of the driving shaft is connected with the valve plate. One end of the transmission assembly is in transmission connection with the driving shaft, and the other end of the transmission assembly protrudes out of the transmission box. A driving seat is arranged on the outer side of the transmission box and connected with the transmission assembly, and the manual auxiliary crank is detachably connected with the driving seat and used for manually driving the valve plate to rotate. When the electric butterfly valve is powered off, manual opening and closing control can be achieved through the manual auxiliary crank, and the problem that operation cannot be conducted in the power failure process is solved; the transmission assembly ensures that manual driving is stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely relates to a kind of electric butterfly valve. BACKGROUND

[0002] Butterfly valve is also called flap valve, it is a kind of simple structure regulating valve, main function is used to cut off the flow of medium in pipeline, or adjust the size of medium flow in pipeline, secondly, butterfly valve can also be used to control air, water, steam, various corrosive media, slurry, oil, liquid metal and radioactive medium and various types of fluid flow.It is generally driven by motor to drive valve stem and valve plate in existing electric butterfly valve, to control the opening and closing of butterfly valve, when power off, it cannot control the opening and closing of butterfly valve, which will bring inconvenience or safety hazard to relevant staff. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of electric butterfly valve, to solve the above-mentioned problems existing in current electric butterfly valve.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of electric butterfly valve, including valve body, valve plate, drive shaft, transmission case, electric actuator and manual auxiliary crank, the bottom of the valve body is provided with through slot, the valve plate is set in the through slot, the drive shaft is rotationally arranged in the valve body, the transmission case is connected at the top of the valve body, the electric actuator is connected at the top of the transmission case, wherein, the drive shaft is arranged through the transmission case, the upper end of the drive shaft is connected with the electric actuator, the lower end is connected with the valve plate, transmission assembly is arranged in the transmission case, one end of the transmission assembly is drivingly connected with the drive shaft, the other end protrudes the transmission case and is arranged, drive seat is arranged on the outside of the transmission case, the drive seat is connected with the transmission assembly, the manual auxiliary crank is detachably connected with the drive seat, the manual auxiliary crank is used to be connected with the drive seat to manually drive the valve plate to rotate.

[0006] Further, the transmission assembly includes transmission shaft, first bevel gear and second bevel gear, bearing seat is arranged in the transmission case, the transmission shaft is rotationally arranged in the bearing seat, one end of the transmission shaft is connected with the drive seat, the other end is connected with the first bevel gear, the second bevel gear is sleeved on the drive shaft, and the first bevel gear and the second bevel gear are engaged transmission, the rotation of the transmission shaft can drive the drive shaft to rotate through the cooperation of the first bevel gear and the second bevel gear.

[0007] Further, rectangular socket is arranged on the drive seat, and the end of the manual auxiliary crank is provided with rectangular plug, the manual auxiliary crank is driven to rotate by the cooperation of rectangular plug and the rectangular socket.

[0008] Further, a scale for displaying the opening angle of the valve plate is arranged on the side wall of the transmission box around the driving shaft, and the driving seat is provided with an indicating mark corresponding to the scale.

[0009] Further, the manual auxiliary crank is Z-shaped, and two clamping buckles are arranged on the outer wall of the transmission box, and the manual auxiliary crank is clamped on the clamping buckles.

[0010] Further, a cover plate is arranged on the outer wall of the transmission box at a position corresponding to the clamping buckles, the lower end of the cover plate is hinged on the transmission box, the upper end of the cover plate is provided with a clamping claw, and a clamping groove is correspondingly arranged on the outer wall of the transmission box, the cover plate is fixed on the outer wall of the transmission box through the clamping cooperation of the clamping claw and the clamping groove, and the clamping interface is located in the cover plate.

[0011] The electric butterfly valve has the advantages that:

[0012] The electric butterfly valve has the advantages that:

[0013] Further, the driving seat is provided with an indicating mark corresponding to the scale on the side wall of the transmission box, and when the butterfly valve is manually operated, the opening angle of the valve plate can be intuitively understood by observing the cooperation of the indicating mark and the scale, so that the opening degree of the butterfly valve can be more accurately controlled to meet the demand for medium flow regulation under different working conditions. This intuitive operation mode improves work efficiency and reduces repeated adjustments caused by inaccurate operation.

[0014] Further, the manual auxiliary crank is Z-shaped, and two clamping buckles are arranged on the outer wall of the transmission box, and the manual auxiliary crank is clamped on the clamping buckles. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1is a structural schematic diagram of the electric butterfly valve of the utility model;

[0016] Fig. 2 is a structural schematic diagram of the electric butterfly valve of the utility model after the cover plate is opened;

[0017] Fig. 3 is a structural schematic diagram of the transmission case inside the electric butterfly valve of the utility model.

[0018] Corresponding names of various marks in the figure are:

[0019] 1, valve body;11, through slot;2, valve plate;3, drive shaft;4, transmission case;41, bearing seat;42, scale;43, clamping buckle;44, clamping groove;5, electric actuator;6, manual auxiliary crank;61, rectangular plug;7, transmission shaft;8, first bevel gear;9, second bevel gear;10, drive seat;101, rectangular slot;102, indication mark;12, cover plate;121, clamping claw. Specific implementation

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0021] As Figs. 1 to 3 shown, the electric butterfly valve provided by the utility model includes a valve body 1, a valve plate 2, a drive shaft 3, a transmission case 4, an electric actuator 5 and a manual auxiliary crank 6. The valve body 1 is provided with a through slot 11 at the bottom, and the valve plate 2 is arranged in the through slot 11 and used for cutting off or adjusting the flow of medium in the pipeline. The drive shaft 3 is rotatably arranged in the valve body 1, and the lower end thereof is connected with the valve plate 2, and the upper end thereof is used for cooperating with a transmission assembly. The transmission case 4 is connected at the top of the valve body 1, and the electric actuator 5 is connected at the top of the transmission case 4. The drive shaft 3 penetrates through the transmission case 4 and is connected with the electric actuator 5 at the upper end, and the drive shaft 3 is driven to rotate by the electric actuator 5, thereby driving the valve plate 2 to rotate.

[0022] Fig. 2 and Fig. 3 As shown, the transmission case 4 is provided with a transmission assembly, and the transmission assembly is used for transmitting manual driving force to the drive shaft 3. Specifically, the transmission assembly includes a transmission shaft 7, a first bevel gear 8 and a second bevel gear 9. The transmission case 4 is provided with a bearing seat 41, and the transmission shaft 7 is rotatably arranged in the bearing seat 41. One end of the transmission shaft 7 is connected with a drive seat 10, and the other end is connected with the first bevel gear 8. The second bevel gear 9 is sleeved on the drive shaft 3, and the first bevel gear 8 and the second bevel gear 9 are in meshing transmission. When the transmission shaft 7 rotates, the drive shaft 3 can be driven to rotate through the cooperation of the first bevel gear 8 and the second bevel gear 9.

[0023] Fig. 2As shown, a drive seat 10 is provided on the outside of the transmission box 4. The drive seat 10 is connected to the transmission shaft 7 and is used to transmit manual driving force to the transmission shaft 7. A rectangular slot 101 is provided on the drive seat 10, and a rectangular plug 61 is provided at the end of the manual auxiliary crank 6. The manual auxiliary crank 6 is connected to the drive seat 10 by the mating of the rectangular plug 61 and the rectangular slot 101, so that the drive seat 10 can be driven to rotate by rotating the manual auxiliary crank 6.

[0024] The transmission housing 4 has a scale 42 on its side wall around the drive shaft 3 to display the opening and closing angle of the valve plate 2, and the drive seat 10 has an indicator mark 102 corresponding to the scale 42. By cooperating with the indicator mark 102 and the scale 42, the opening and closing angle of the valve plate 2 can be intuitively understood.

[0025] Fig. 2 As shown, the manual auxiliary crank 6 is Z-shaped, making it easy for the operator to grip and rotate. Two snap-fit ​​buckles 43 are provided on the outer wall of the transmission box 4, and the manual auxiliary crank 6 is snapped into these buckles 43 for easy storage when not in use. A cover plate 12 is provided on the outer wall of the transmission box 4 at a position corresponding to the snap-fit ​​buckles 43. The lower end of the cover plate 12 is hinged to the transmission box 4, and the upper end of the cover plate 12 is provided with snap-fit ​​claws 121. Correspondingly, a slot 44 is provided on the outer wall of the transmission box 4. Through the snap-fit ​​engagement of the snap-fit ​​claws 121 and the slot 44, the cover plate 12 is fixed to the outer wall of the transmission box 4, and the snap-fit ​​buckles 43 are located within the cover plate 12, providing protection for both the snap-fit ​​buckles 43 and the manual auxiliary crank 6.

[0026] Working principle:

[0027] During normal use, the electric actuator 5 drives the drive shaft 3 to rotate, which in turn drives the valve plate 2 to rotate, thereby controlling the opening and closing of the butterfly valve. When the power is off, the rectangular plug 61 of the manual auxiliary crank 6 can be inserted into the rectangular slot 101 of the drive seat 10. By rotating the manual auxiliary crank 6, the drive seat 10 is driven to rotate, which in turn drives the transmission shaft 7 to rotate. The transmission shaft 7 drives the drive shaft 3 to rotate through the engagement of the first bevel gear 8 and the second bevel gear 9, which in turn drives the valve plate 2 to rotate, thus achieving manual control of the butterfly valve's opening and closing. During normal use, the manual auxiliary crank 6 can be stored in the housing.

[0028] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model are within the protection scope of this utility model.

Claims

1. An electrically powered butterfly valve characterized by: The valve body, the valve plate, the drive shaft, the transmission box, the electric actuator and the manual auxiliary crank are provided with a through slot, the valve plate is arranged in the through slot, the drive shaft is rotatably arranged in the valve body, the transmission box is connected to the top of the valve body, the electric actuator is connected to the top of the transmission box, wherein the drive shaft penetrates through the transmission box, the upper end of the drive shaft is connected with the electric actuator, the lower end is connected with the valve plate, the transmission assembly is arranged in the transmission box, one end of the transmission assembly is in transmission connection with the drive shaft, the other end protrudes from the transmission box, the drive seat is arranged outside the transmission box, the drive seat is connected with the transmission assembly, the manual auxiliary crank is detachably connected with the drive seat, and the manual auxiliary crank is used for being connected with the drive seat to manually drive the valve plate to rotate.

2. The motorized butterfly valve of claim 1, wherein: The transmission assembly comprises a transmission shaft, a first bevel gear and a second bevel gear, the transmission box is provided with a bearing seat, the transmission shaft is rotatably arranged in the bearing seat, one end of the transmission shaft is connected with the drive seat, the other end is connected with the first bevel gear, the second bevel gear is sleeved on the transmission shaft, the first bevel gear and the second bevel gear are in meshing transmission, and the rotation of the transmission shaft can drive the drive shaft to rotate through the cooperation of the first bevel gear and the second bevel gear.

3. The motorized butterfly valve of claim 2, wherein: The drive seat is provided with a rectangular slot, the end of the manual auxiliary crank is provided with a rectangular plug, the manual auxiliary crank drives the drive seat to rotate through the cooperation of the rectangular plug and the rectangular slot.

4. The motorized butterfly valve of claim 3, wherein: The side wall of the transmission box is provided with a scale for displaying the opening and closing angle of the valve plate at the position around the drive shaft, and the drive seat is provided with an indication mark corresponding to the scale.

5. The motorized butterfly valve of claim 4, wherein: The manual auxiliary crank is Z-shaped, the outer wall of the transmission box is provided with two clamping buckles, and the manual auxiliary crank is clamped on the clamping buckles.

6. The motorized butterfly valve of claim 5, wherein: The outer wall of the transmission box is provided with a cover plate at the position corresponding to the clamping buckle, the lower end of the cover plate is hinged to the transmission box, the upper end of the cover plate is provided with a clamping claw, the outer wall of the transmission box is correspondingly provided with a clamping groove, the cover plate is fixed on the outer wall of the transmission box through the clamping cooperation of the clamping claw and the clamping groove, and the clamping buckle is located in the cover plate.

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