CN210739541U

CN210739541U - Electric butterfly valve

Info

Publication number: CN210739541U
Application number: CN201921730744.3U
Authority: CN
Inventors: 吴福全
Original assignee: Guangzhou Jiafusi Valve Making Co ltd
Current assignee: Guangzhou Jiafusi Valve Making Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-12
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a valve field, concretely relates to electric butterfly valve, the rotatory stop device of main shaft is installed to output main shaft and coupling joint's one end, and electric actuator's casing installation valve body opening/closing signal feedback device and valve body opening/closing indicating device are passed to the upper end of output main shaft, and the top cap that covers valve body opening/closing signal feedback device and valve body opening/closing indicating device is installed at the top of electric actuator's casing. The utility model discloses well electric actuator is provided with rotation angle stop device and can effectively avoid the output main shaft corner excessive, can directly observe through valve body open/close indicating device and learn the state that the valve was opened and was closed, through the corner state of valve body open/close signal feedback device feedback output main shaft, has realized the digital feedback function of electric butterfly valve state, the on-the-spot unmanned management of being convenient for.

Description

Electric butterfly valve

Technical Field

The utility model relates to a valve field, concretely relates to electric butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a valve clack or a butterfly plate of a closing member is a disk.

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

When the valve is used, the valve body is not provided with a reminding device, so that the valve is not easy to see from the appearance when the valve is in an open or closed state.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric butterfly valve.

To achieve the purpose, the utility model adopts the following technical proposal:

provides an electric butterfly valve, which comprises a valve body, an electric actuator and a connecting bracket for connecting the electric actuator and the valve body, wherein a driving motor and a gear box are arranged inside the electric actuator, the worm, output main shaft and turbine, the output shaft of driving motor is connected with the input end of gear change box in a transmission way, the worm is equipped with the drive gear connected with the output end of gear change box in a transmission way, the turbine is installed on the output main shaft and connected with the worm in a transmission way, the lower end of the output main shaft passes through the shell of the electric actuator and is connected with the long shaft of the valve body in a transmission way through the coupler, the main shaft rotation limiting device is installed at the end of the output main shaft connected with the coupler, the valve body opening/closing limiting signal feedback device and the valve body opening/closing indicating device are installed at the upper end of the output main shaft passing through the shell of the electric actuator, and the top cover for covering the valve body opening/.

The top of the shell of the electric actuator is provided with an upper bin body, a mounting plate fixedly connected with the shell of the electric actuator is mounted in the upper bin body, the mounting plate is provided with a through hole for the output main shaft to pass through, and the upper end of the output main shaft passes through the through hole and is arranged in the top cover.

The valve body opening/closing signal feedback device comprises a first switch group, a second switch group and a switch power supply capacitor, wherein a stepped shaft is arranged on a part, penetrating out of the mounting plate, of the output main shaft, a first cam and a second cam which rotate along with the output main shaft are arranged on the stepped shaft, the first switch group and the second switch group are arranged on two sides of the stepped shaft in a row, the first switch group and the second switch group respectively comprise an upper micro switch and a lower micro switch which are stacked up and down, a bulge extending along the axis direction of the cam is arranged on the cam, the bulge is provided with a wide part and a narrow part, the wide part of the bulge is in matched contact with the upper micro switch, and the narrow part of the bulge is in matched contact with the lower micro switch.

The valve body opening/closing indicating device comprises a rotary indicating disc and a pointer, the rotary indicating disc is fixedly installed at the top end of the output main shaft and coaxial with the output main shaft, an installation column is arranged on the installation plate, the pointer is installed at the top of the installation column and provided with a needle head extending to the upper side of the disc surface of the rotary indicating disc, and the top cover is provided with an observation window located above the rotary indicating disc.

The top cover is provided with a transparent plate.

The bottom of electric actuator's casing is equipped with circular heavy groove, and the rotatory stop device of main shaft is including a dog and two spacing bolts, and two spacing bolts are parallel to each other install on electric actuator casing and extend to circular heavy inslot with the state of perpendicular to output main shaft, and the dog cover is established on the output main shaft and along with output main shaft synchronous revolution, and this dog is equipped with the spacing face of separable conflict with spacing bolt respectively, is 90 degrees contained angles setting between two spacing faces.

The turbine is a sector turbine.

And a sealing rubber pad is arranged between the shell and the top cover of the electric actuator.

The utility model has the advantages that: the utility model discloses an electric butterfly valve, sealing rubber pad install between electric actuator casing and lid, have good waterproof, dampproofing effect, and electric actuator is provided with rotation angle stop device and can effectively avoid exporting the main shaft corner excessively, and the valve plate is target in place the accuracy and is unlikely to lead to leaking because of opening and close excessively when guaranteeing the butterfly valve and closing. The opening and closing states of the valve can be directly observed through the actuator opening/closing indicating device, the turning angle state of the output spindle is fed back through the valve body opening/closing signal feedback device, the valve body closing state signal feedback and the power failure after the valve body is closed are obtained in the valve body closing action, the valve body opening state signal feedback and the power failure after the valve body is opened are obtained in the valve body opening action, the digital feedback function of the state of the electric butterfly valve can be realized, and the field unmanned management is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a schematic perspective exploded view of the present invention;

FIG. 4 is a schematic perspective view of the valve body of the present invention;

FIG. 5 is a schematic view of the three-dimensional exploded structure of the valve body of the present invention;

fig. 6 is a first perspective view of the electric actuator of the present invention;

FIG. 7 is an enlarged schematic view at A in FIG. 6;

fig. 8 is a second perspective view of the electric actuator of the present invention;

FIG. 9 is an enlarged schematic view at B in FIG. 8;

fig. 10 is a third perspective view of the electric actuator of the present invention;

fig. 11 is a fourth perspective view of the electric actuator of the present invention;

in the figure:

the valve comprises a valve body 1, a long shaft 1a, a valve plate 1b, an electric actuator 2, a connecting support 3, a driving motor 4, a gear transmission case 5, a worm 6, an output main shaft 7, a turbine 8, a transmission gear 9, a top cover 10, a stop block 11, a limit bolt 12, a mounting plate 13, a first switch group 14, a second switch group 15, a switch power supply capacitor 16, a cam 17, a wide part 17a, a narrow part 17b, a rotary indicating disc 18, a pointer 19, a mounting column 20 and an observation window 21.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 11, an electric butterfly valve comprises a valve body 1, an electric actuator 2 and a connecting bracket 3 connecting the electric actuator 2 and the valve body 1, wherein a driving motor 4, a gear box 5, a worm 6, an output spindle 7 and a turbine 8 are arranged inside the electric actuator 2, an output shaft of the driving motor 4 is in transmission connection with an input end of the gear box 5, a transmission gear 9 in transmission connection with an output end of the gear box 5 is arranged on the worm 6, the turbine 8 is arranged on the output spindle 7 and is in transmission connection with the worm 6, the lower end of the output spindle 7 penetrates through a shell of the electric actuator 2 and is in transmission connection with a long shaft 1a of the valve body 1 through a coupler, a spindle rotation limiting device is arranged at one end of the output spindle 7 connected with the coupler, an opening/closing limiting signal feedback device of the valve body 1 and an opening/closing indicating device of the valve body 1 are arranged, the top of the housing of the electric actuator 2 is mounted with a top cover 10 covering the opening/closing signal feedback means of the valve body 1 and the opening/closing indicating means of the valve body 1.

The top of the shell of the electric actuator 2 is provided with an upper cabin body, the upper cabin body is internally provided with a mounting plate 13 fixedly connected with the shell of the electric actuator 2, the mounting plate 13 is provided with a through hole for the output main shaft 7 to pass through, and the upper end of the output main shaft 7 passes through the through hole and is arranged in the top cover 10.

The valve body 1 opening/closing signal feedback device comprises a first switch group 14, a second switch group 15 and a switch power supply capacitor 16, wherein a stepped shaft is arranged on the part of an output main shaft 7, which penetrates out of an installation plate 13, a cam 17 rotating along with the output main shaft 7 is installed on the stepped shaft, the first switch group 14 and the second switch group 15 are arranged at two sides of the stepped shaft in a row, the first switch group 14 and the second switch group 15 respectively comprise an upper micro switch and a lower micro switch which are vertically stacked, a bulge extending along the axial direction of the cam 17 is arranged on the cam 17, the bulge is provided with a wide part 17a and a narrow part 17b, the convex part 17a is in matched contact with the upper micro switch, and the convex narrow part 17b is in matched contact with the lower micro switch.

The feedback device for the opening/closing signal of the valve body 1 mainly realizes signal triggering by matching the cam 17 with the first switch group 14 and the second switch group 15, sends the triggering signal to a control cabinet in a field pipeline system, and the control cabinet judges the working state of the valve body 1 according to the received signal, wherein the specific signal triggering process is as follows:

when the valve is opened, the driving motor 4 works to finally drive the output spindle 7 to rotate through gear transmission speed reduction and worm reduction, the valve plate 1b in the valve body 1 is driven to rotate by 90 degrees, the wide part 17a in the cam 17 is preferentially contacted with the upper microswitch in the first switch group 14 in the rotation and positioning process, the driving motor 4 is powered off after the upper microswitch is triggered, then the narrow part 17b on the cam 17 is contacted with the lower microswitch in the first switch group 14, the lower microswitch is triggered to output an 'on' signal to the control cabinet, and the corresponding indicator lamp in the control cabinet lights a green lamp. It should be noted that, although the triggering of the upper micro switch and the lower micro switch in the valve opening process is sequential in time, the time difference is in the order of milliseconds, that is, the valve is opened to the right and the on signals are obtained in synchronization in appearance.

When the valve is closed, the driving motor 4 works to finally drive the output spindle 7 to rotate through gear transmission speed reduction and worm reduction, the valve plate 1b in the valve body 1 is driven to rotate by 90 degrees, the wide part 17a in the cam 17 is prior to the contact of the upper microswitch in the second switch group 15 in the process of rotation to the position, the driving motor 4 is powered off after the upper microswitch is triggered, then the narrow part 17b on the cam 17 is in contact with the lower microswitch in the second switch group 15, the lower microswitch outputs an 'off' signal to the control cabinet after being triggered, and the corresponding indicator lamp in the control cabinet lights the red light. It should be noted that, in the valve opening process, although the triggering of the upper micro switch and the lower micro switch has a sequential relationship in time, the time difference is in the order of milliseconds, that is, the valve is closed to the right and the obtaining of the "off" signal is synchronous in appearance.

The open/close indicating device of the valve body 1 comprises a rotary indicating disc 18 and a pointer 19, the rotary indicating disc 18 is fixedly arranged at the top end of the output main shaft 7 and is coaxial with the output main shaft 7, a mounting column 20 is arranged on the mounting plate 13, the pointer 19 is arranged at the top of the mounting column 20 and is provided with a needle head extending to the upper side of the disc surface of the rotary indicating disc 18, and the top cover 10 is provided with an observation window 21 positioned above the rotary indicating disc 18.

A transparent plate is mounted on the top cover 10. The scale value pointed by the pointer 19 on the rotary indicating disc 18 can be directly observed through the transparent plate, so that the straight pipe can know the rotating angle of the valve plate 1b in the valve body 1, namely the working state of the butterfly valve.

The bottom of electric actuator 2's casing is equipped with circular heavy groove, and the rotatory stop device of main shaft is including a dog 11 and two stop bolts 12, and two stop bolts 12 are parallel to each other install on electric actuator 2 casing and extend to circular heavy inslot with the state of perpendicular to output main shaft 7, and dog 11 cover is established on output main shaft 7 and along with output main shaft 7 synchronous revolution, and this dog 11 is equipped with respectively with the spacing face of the separable conflict of stop bolt 12, is 90 degrees contained angles between two spacing faces and sets up.

The main shaft rotation limiting device is used as a safety device, namely under the condition that the first switch group 14 and the second switch group 15 are out of order, the output main shaft 7 is prevented from rotating excessively when the driving motor 4 is not powered off in time, and the valve body 1 is ensured to be opened and closed accurately.

The turbine 8 is a sector turbine 8.

Because the actual rotation angle stroke of the output main shaft 7 is within the range of 0-90 degrees, only one quarter of the worm wheel 8 is meshed with the worm 6, and the other parts do not participate in the transmission of the worm wheel 6, so that the worm wheel 8 is designed into a fan-shaped structure. The fan-shaped turbine 8 saves the material of the turbine, simultaneously reduces the weight of the electric actuator 2, and also makes the internal space of the electric actuator 2 more compact, so that the volume of the electric actuator 2 is smaller. On the other hand, with the design of the sector turbine 8, the distance between the main shaft of the driving electrode and the worm 6 is shortened, and thus the size of each gear in the gear box 5 can be reduced, and the manufacturing cost of the electric actuator 2 can be reduced as a whole.

A sealing rubber gasket is arranged between the shell of the electric actuator 2 and the top cover 10. So that the electric actuator 2 has good waterproof and moistureproof functions.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. An electric butterfly valve comprises a valve body (1), an electric actuator (2) and a connecting support (3) for connecting the electric actuator (2) and the valve body (1), and is characterized in that a driving motor (4), a gearbox (5), a worm (6), an output spindle (7) and a turbine (8) are arranged inside the electric actuator (2), an output shaft of the driving motor (4) is in transmission connection with an input end of the gearbox (5), a transmission gear (9) in transmission connection with an output end of the gearbox (5) is installed on the worm (6), the turbine (8) is installed on the output spindle (7) and is in transmission connection with the worm (6), the lower end of the output spindle (7) penetrates through a shell of the electric actuator (2) and is in transmission connection with a long shaft (1a) of the valve body (1) through a coupler, and a spindle rotation limiting device is installed at one end of the output spindle (7) connected with the coupler, the upper end of the output main shaft (7) penetrates through the shell of the electric actuator (2) to be provided with the valve body (1) opening/closing signal feedback device and the valve body (1) opening/closing indicating device, and the top cover (10) covering the valve body (1) opening/closing signal feedback device and the valve body (1) opening/closing indicating device is arranged at the top of the shell of the electric actuator (2).

2. An electric butterfly valve according to claim 1, characterized in that: the top of the shell of the electric actuator (2) is provided with an upper cabin body, the upper cabin body is internally provided with a mounting plate (13) fixedly connected with the shell of the electric actuator (2), the mounting plate (13) is provided with a through hole for the output spindle (7) to pass through, and the upper end of the output spindle (7) passes through the through hole and is arranged in the top cover (10).

3. An electric butterfly valve according to claim 2, characterized in that: the valve body (1) opening/closing signal feedback device comprises a first switch group (14), a second switch group (15) and a switch power supply capacitor (16), a stepped shaft is arranged on a part, penetrating out of an installation plate (13), of an output main shaft (7), a cam (17) rotating along with the output main shaft (7) is installed on the stepped shaft, the first switch group (14) and the second switch group (15) are arranged on two sides of the stepped shaft in a row mode, the first switch group (14) and the second switch group (15) comprise an upper micro switch and a lower micro switch which are stacked up and down, a protrusion extending along the axis direction of the cam (17) is arranged on the cam, a wide part (17a) and a narrow part (17b) are arranged on the protrusion, the wide part (17a) of the protrusion is in matched contact with the upper micro switch, and the narrow part (17b) of the protrusion is in matched contact with the lower micro switch.

4. An electric butterfly valve according to claim 2, characterized in that: the valve body (1) opening/closing indicating device comprises a rotary indicating disc (18) and a pointer (19), wherein the rotary indicating disc (18) is fixedly installed at the top end of an output main shaft (7) and is coaxial with the output main shaft (7), an installation column (20) is arranged on an installation plate (13), the pointer (19) is installed at the top of the installation column (20) and is provided with a needle head extending to the upper side of the disc surface of the rotary indicating disc (18), and a top cover (10) is provided with an observation window (21) located above the rotary indicating disc (18).

5. An electric butterfly valve according to claim 4, characterized in that: a transparent plate is arranged on the top cover (10).

6. An electric butterfly valve according to any one of claims 1 to 5, characterized in that: the bottom of the shell of the electric actuator (2) is provided with a circular sinking groove, the main shaft rotation limiting device comprises a stop block (11) and two limiting bolts (12), the two limiting bolts (12) are parallel to each other, are arranged on the shell of the electric actuator (2) and extend into the circular sinking groove in a state perpendicular to the output main shaft (7), the stop block (11) is sleeved on the output main shaft (7) and rotates synchronously with the output main shaft (7), the stop block (11) is provided with limiting faces which can be respectively abutted against the limiting bolts (12) in a separable mode, and a 90-degree included angle is formed between the two limiting faces.

7. An electric butterfly valve according to claim 6, characterized in that: the turbine (8) is a sector turbine (8).

8. An electric butterfly valve according to claim 7, characterized in that: a sealing rubber pad is arranged between the shell of the electric actuator (2) and the top cover (10).