CN112049977A

CN112049977A - Electric ball valve

Info

Publication number: CN112049977A
Application number: CN202010956893.2A
Authority: CN
Inventors: 李玉昌; 刘希攀
Original assignee: Jinan Gaoling Machinery Technology Co ltd
Current assignee: Jinan Gaoling Machinery Technology Co ltd
Priority date: 2020-09-12
Filing date: 2020-09-12
Publication date: 2020-12-08

Abstract

The invention discloses an electric ball valve which comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly arranged at an opening on the side surface of the valve cavity, an inlet pipe is arranged on the side surface of the valve body, and an outlet pipe is arranged on the valve cover; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod is fixedly provided with a ball core, and a through flow hole is formed in the ball core; a shell is fixedly installed on the outer side of the valve body, and the upper end of the valve rod extends into the shell and is provided with a first gear; the upper end of the shell is provided with a motor, and an output shaft of the motor extends into the shell and is coaxial with the first gear; a first unidirectional rotating assembly is arranged between an output shaft of the motor and the first gear; a manual assembly for driving the first gear to rotate and a transmission assembly positioned between the first gear and the manual assembly are arranged in the shell; the electric ball valve is not only reasonable in structure, but also can realize two control modes of electric control and manual control.

Description

Electric ball valve

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to an electric ball valve.

Background

The electric ball valve is composed of an electric actuator and a ball valve, is a pipeline pressure element for industrial automation process control, and is generally used for remote opening and closing (medium connection and disconnection) control of pipeline media. Along with the development of electrical equipment, a large number of manually controlled ball valves are replaced by electrically controlled ball valves, the traditional manual ball valves are inconvenient to operate and low in use precision when in use, the electric control ball valve can be intelligently and automatically controlled, but has the limitation of use conditions, sometimes needs to switch between manual control and electric control, however, most of the existing ball valves with manual and electric control only need to be manually controlled when the electric cannot be operated when the electric power is lost, such a single control requires a complicated structure and is liable to be operated erroneously, and if the manual operation is performed after a power failure, the manual control device is damaged if the power is recovered, and the operation of personnel often has carelessness and carelessness, is difficult to control when wholly using, simultaneously is not safe enough and intelligent, still has the space that awaits improvement.

Disclosure of Invention

The invention aims to provide a gate valve which is reasonable in structure and can realize two control modes of electric control and manual control.

In order to achieve the purpose, the invention provides the following technical scheme:

an electric ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening on the side face of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod extends into the valve cavity, the lower end of the valve rod is fixedly provided with a ball core which is rotatably connected in the valve cavity and used for controlling the on-off of the inlet pipe and the outlet pipe, a through flow hole is arranged in the ball core, and when the ball valve is opened, two ends of the through flow hole are respectively communicated with the inlet pipe and the outlet pipe; a shell is fixedly installed on the outer side of the valve body, and the upper end of the valve rod extends into the shell and is provided with a first gear; the upper end of the shell is provided with a motor, and an output shaft of the motor extends into the shell and is coaxial with the first gear; a first unidirectional rotating assembly is arranged between an output shaft of the motor and the first gear; the shell is internally provided with a manual assembly used for driving the first gear to rotate and a transmission assembly positioned between the first gear and the manual assembly.

Furthermore, the first unidirectional rotating assembly comprises a first clamping block, a first rotating groove is formed in the upper end of the first gear, a plurality of first ratchet grooves are uniformly formed in the circumferential inner side wall of the first rotating groove at intervals along the circumferential direction, and an output shaft of the motor extends into the first rotating groove; a first sliding groove is formed in an output shaft of the motor in a penetrating manner along the radial direction, the two first clamping blocks are symmetrically and slidably connected in the first sliding groove, and a first spring for forcing the two first clamping blocks to abut against the first ratchet groove is arranged in the first sliding groove; and an output shaft of the motor drives the first gear to rotate when rotating clockwise and does not drive the first gear to rotate when rotating anticlockwise.

Furthermore, the manual assembly comprises a shaft rod which is connected in the casing in a rotating mode along the axial direction of the valve rod, a first bevel gear which is located in the casing is fixedly arranged on the outer side, close to the lower end, of the shaft rod, and the upper end of the shaft rod extends out of the casing and is fixedly provided with a handle.

Furthermore, the transmission assembly comprises an upper rotating shaft, a lower rotating shaft and an intermediate shaft, the upper rotating shaft is connected to the upper end of the casing in a sliding manner along the axial direction of the shaft lever, the lower rotating shaft is connected to the lower end of the casing in a sliding manner along the axial direction of the shaft lever, and the upper rotating shaft and the lower rotating shaft are coaxially arranged; the upper end of the middle shaft is fixedly connected with the lower end of the upper rotating shaft; the upper end of the lower rotating shaft is provided with a lower shaft hole, the lower end of the intermediate shaft is connected in the lower shaft hole in a sliding manner, the lower end of the intermediate shaft is provided with a spring hole communicated with the lower shaft hole, a second spring used for forcing the intermediate shaft to move upwards is arranged between the intermediate shaft and the lower rotating shaft, the upper end of the second spring is abutted against the top end of the spring hole, and the lower end of the second spring is abutted against the bottom end of the lower shaft hole; the side surface of the intermediate shaft is provided with a limiting sliding groove communicated with the spring hole along the axial direction of the intermediate shaft, and the inner side wall of the lower shaft hole is provided with a limiting convex column extending into the limiting sliding groove;

the middle shaft is provided with a second gear, a gasket is rotatably connected above the second gear, and the second gear is meshed with the first gear when the gasket abuts against the inner side wall of the upper end of the machine shell; a second unidirectional rotating assembly is arranged between the intermediate shaft and the second gear; and a second helical gear meshed with the first helical gear is fixedly mounted on the lower rotating shaft, and the first helical gear drives the second helical gear to drive the lower rotating shaft to axially move while driving the second helical gear to rotate.

Furthermore, the second unidirectional rotating assembly comprises a second fixture block, a plurality of second ratchet grooves are uniformly formed in the side wall of the inner hole of the second gear at intervals along the circumferential direction, a penetrating second sliding groove is formed in the intermediate shaft along the radial direction, the second fixture blocks are two and are symmetrically and slidably connected in the second sliding groove, and a third spring for forcing the two second fixture blocks to abut against the second ratchet grooves is arranged in the second sliding groove; the intermediate shaft drives the second gear to rotate when rotating anticlockwise and does not drive the second gear to rotate when rotating clockwise.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. the invention is provided with the motor drive and the manual component drive, realizes the coexistence of two drive modes, and is more flexible to use, and the motor drive regulation and the manual component drive regulation can be directly converted into the manual component control from the motor drive control or into the motor drive control from the manual component control without an independent switching mechanism;

2. when the electric motor is used, the electric drive and the manual drive are independent and do not influence each other, the use is more coherent and safe, and even if the electric motor is electrified suddenly during manual operation, the motor cannot be damaged.

Drawings

FIG. 1 is a cross-sectional view of the present invention, shown in a manually adjusted position;

FIG. 2 is a cross-sectional view of the present invention, shown in the electrically adjusted position;

FIG. 3 is a three-dimensional assembly of the present invention in a partially constructed position for manual adjustment;

FIG. 4 is a three-dimensional assembly of the present invention in a partially constructed configuration in a motorized adjustment position;

fig. 5 is a sectional view taken along line a-a in fig. 1.

Detailed Description

Referring to fig. 1-3, an electric ball valve includes a valve body 1, a valve cavity 1a is provided in the valve body 1, a valve cover 3 is fixedly installed at an opening on a side surface of the valve cavity 1a, an inlet pipe 101 communicated with the valve cavity 1a is provided on a side surface of the valve body 1, an outlet pipe 102 communicated with the valve cavity 1a is provided on the valve cover 3, and the inlet pipe 101 and the outlet pipe 102 are coaxially provided; the upper end of the valve body 1 is rotatably connected with a valve rod 4 with the lower end extending into the valve cavity 1a, the lower end of the valve rod 4 is fixedly provided with a ball core 2 which is rotatably connected in the valve cavity 1a and is used for controlling the connection and disconnection of the inlet pipe 101 and the outlet pipe 102, a through hole 21 is arranged in the ball core 2, and when the ball valve is opened, two ends of the through hole 21 are respectively communicated with the inlet pipe 101 and the outlet pipe 102; a casing 5 is fixedly installed on the outer side of the valve body 1, and the upper end of the valve rod 4 extends into the casing 5 and is provided with a first gear 4 a; the upper end of the casing 5 is provided with a motor 6, and an output shaft 61 of the motor 6 extends into the casing 5 and is coaxial with the first gear 4 a; a first unidirectional rotating component is arranged between the output shaft 61 of the motor 6 and the first gear 4 a; a manual assembly for driving the first gear 4a to rotate and a transmission assembly between the first gear 4a and the manual assembly are arranged in the housing 5.

The first unidirectional rotation assembly comprises a first latch 62, the upper end of the first gear 4a is provided with a first rotating groove 41, the circumferential inner side wall of the first rotating groove 41 is provided with a plurality of first ratchet grooves 4a1 at intervals along the circumferential direction, and the output shaft 61 of the motor 6 extends into the first rotating groove 41; a first sliding groove 6a penetrating through the output shaft 61 of the motor 6 is radially arranged in the output shaft, two first fixture blocks 62 are symmetrically and slidably connected in the first sliding groove 6a, and a first spring 63 for forcing the two first fixture blocks 62 to abut against the first ratchet groove 4a1 is arranged in the first sliding groove 6 a; the output shaft 61 of the motor 6 drives the first gear 4a to rotate when rotating clockwise, and does not drive the first gear 4a to rotate when rotating counterclockwise.

The manual assembly comprises a shaft rod 10 which is rotatably connected in the casing 5 along the axial direction of the valve rod 4, a first bevel gear 10a which is positioned in the casing 5 is fixedly arranged on the outer side of the shaft rod 10 close to the lower end, and a handle 11 is fixedly arranged at the upper end of the shaft rod 10, which extends out of the casing 5.

The transmission assembly comprises an upper rotating shaft 12, a lower rotating shaft 9 and an intermediate shaft 8, wherein the upper rotating shaft 12 is connected to the upper end of the machine shell 5 in a sliding manner along the axial direction of the shaft lever 10, the lower rotating shaft 9 is connected to the lower end of the machine shell 5 in a sliding manner along the axial direction of the shaft lever 10, and the upper rotating shaft 12 and the lower rotating shaft 9 are coaxially arranged; the upper end of the intermediate shaft 8 is fixedly connected with the lower end of the upper rotating shaft 12; the upper end of the lower rotating shaft 9 is provided with a lower shaft hole 91, the lower end of the intermediate shaft 8 is slidably connected in the lower shaft hole 91, the lower end of the intermediate shaft 8 is provided with a spring hole 83 communicated with the lower shaft hole 91, a second spring 82 used for forcing the intermediate shaft 8 to move upwards is arranged between the intermediate shaft 8 and the lower rotating shaft 9, the upper end of the second spring 82 props against the top end of the spring hole 83, and the lower end props against the bottom end of the lower shaft hole 91; the side of jackshaft 8 is equipped with the spacing spout 81 that communicates with spring hole 83 along its axial, the inside wall in lower shaft hole 91 is equipped with the spacing projection that stretches into in the spacing spout 81.

The intermediate shaft 8 is provided with a second gear 7, the intermediate shaft 8 is rotatably connected with a gasket 13 above the second gear 7, and when the gasket 13 is abutted against the inner side wall at the upper end of the machine shell 5, the second gear 7 is meshed with the first gear 4 a; a second unidirectional rotating component is arranged between the intermediate shaft 8 and the second gear 7; and a second bevel gear 9a meshed with the first bevel gear 10a is fixedly mounted on the lower rotating shaft 9, and the first bevel gear 10a drives the second bevel gear 9a to rotate and simultaneously drives the second bevel gear 9a to drive the lower rotating shaft 9 to axially move.

The second unidirectional rotation assembly includes a second fixture block 85, a plurality of second ratchet grooves 70 are uniformly arranged on the side wall of the inner hole of the second gear 7 at intervals along the circumferential direction, a second sliding groove 8a penetrating through the intermediate shaft 8 is arranged in the intermediate shaft 8 along the radial direction, the second fixture blocks 85 are two and symmetrically connected in the second sliding groove 8a in a sliding manner, and a third spring 84 for forcing the two second fixture blocks 85 to abut against the second ratchet grooves 70 is arranged in the second sliding groove 8 a; the intermediate shaft 8 drives the second gear 7 to rotate when rotating counterclockwise and does not drive the second gear 7 to rotate when rotating clockwise.

When the motor 6 drives the output shaft 61 to rotate clockwise, as shown in fig. 5, the output shaft 61 can drive the valve rod 4 to rotate through the cooperation of the first fixture block 62 and the first ratchet groove 4a1, and further drive the ball core 2 to rotate for opening and closing. When the motor 6 drives the output shaft 61 to rotate anticlockwise, the output shaft 61 cannot drive the valve rod 4 to rotate; the output shaft 61 is likewise not able to be rotated when the valve rod 4 is rotated clockwise.

When the invention is adjusted manually, the handle 11 is rotated to rotate the first bevel gear 10a, and then the lower rotating shaft 9 moves upwards from the position shown in fig. 2 to the position shown in fig. 1 through the cooperation of the first bevel gear 10a and the second bevel gear 9a, the lower rotating shaft 9 moves upwards through the second spring 82 when moving upwards, when the gasket 13 abuts against the inner side wall of the upper end of the machine shell 5, the second gear 7 moves to the position meshed with the first gear 4a, the handle 11 is rotated continuously, the lower rotating shaft 9 is driven to rotate anticlockwise (as shown in fig. 5) through the cooperation of the first bevel gear 10a and the second bevel gear 9a, the lower rotating shaft 9 drives the intermediate shaft 8 to rotate anticlockwise through the cooperation of the limiting convex column and the limiting sliding groove 81, the intermediate shaft 8 drives the second gear 7 to rotate through the cooperation of the second clamping block 85 and the second ratchet groove 70 when rotating, the second gear 7 is driven to rotate clockwise through the meshing of the second gear 7 and the first valve rod 4a, thereby controlling the opening or closing of the ball core 2, and the valve rod 4 can not drive the output shaft 61 of the motor 6 to rotate when rotating clockwise, so that the acting force can not be generated on the motor 6. In the manual regulation, even motor 6 is electrified suddenly, motor 6 drives output shaft 61 clockwise, and then drives first gear 4a clockwise rotation, and first gear 4a drives second gear 7 anticlockwise rotation, because second gear 7 anticlockwise rotation can not drive down pivot 9 through jackshaft 8 and rotate, can not cause the damage to manual operation mechanism from this.

When the electric adjustment is carried out, the lower rotating shaft 9 is moved downwards by the reverse rotating handle 11 through the matching of the first bevel gear 10a and the second bevel gear 9a, the lower rotating shaft 9 is moved downwards to drive the intermediate shaft 8 to move downwards, the intermediate shaft 8 drives the second gear 7 to move downwards, the second gear 7 does not rotate and only moves downwards, and therefore the position of the ball core 2 cannot be changed, when the second gear 7 is disengaged from the first gear 4a, the rotating handle 11 is stopped, the motor 6 is controlled to rotate, and the ball core 2 can be controlled to rotate to be opened or closed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An electric ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening on the side face of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod extends into the valve cavity, the lower end of the valve rod is fixedly provided with a ball core which is rotatably connected in the valve cavity and used for controlling the on-off of the inlet pipe and the outlet pipe, a through flow hole is arranged in the ball core, and when the ball valve is opened, two ends of the through flow hole are respectively communicated with the inlet pipe and the outlet pipe; the valve is characterized in that a casing is fixedly installed on the outer side of the valve body, and the upper end of the valve rod extends into the casing and is provided with a first gear; the upper end of the shell is provided with a motor, and an output shaft of the motor extends into the shell and is coaxial with the first gear; a first unidirectional rotating assembly is arranged between an output shaft of the motor and the first gear; the shell is internally provided with a manual assembly used for driving the first gear to rotate and a transmission assembly positioned between the first gear and the manual assembly.

2. The motorized ball valve according to claim 1, wherein the first unidirectional rotating assembly includes a first clamping block, a first rotating groove is formed at an upper end of the first gear, a plurality of first ratchet grooves are uniformly formed in a circumferential inner side wall of the first rotating groove at intervals along a circumferential direction, and an output shaft of the motor extends into the first rotating groove; a first sliding groove is formed in an output shaft of the motor in a penetrating manner along the radial direction, the two first clamping blocks are symmetrically and slidably connected in the first sliding groove, and a first spring for forcing the two first clamping blocks to abut against the first ratchet groove is arranged in the first sliding groove; and an output shaft of the motor drives the first gear to rotate when rotating clockwise and does not drive the first gear to rotate when rotating anticlockwise.

3. The motorized ball valve of claim 1, wherein the manual assembly comprises a shaft rotatably connected in the housing in an axial direction of the valve stem, the shaft being fixedly provided with a first bevel gear in the housing at an outer side near a lower end thereof, an upper end of the shaft extending out of the housing and being fixedly mounted with a handle.

4. The motorized ball valve as recited in claim 3, wherein the transmission assembly comprises an upper rotating shaft, a lower rotating shaft and an intermediate shaft, the upper rotating shaft is slidably connected to the upper end of the casing along the axial direction of the shaft, the lower rotating shaft is slidably connected to the lower end of the casing along the axial direction of the shaft, and the upper rotating shaft and the lower rotating shaft are coaxially arranged; the upper end of the middle shaft is fixedly connected with the lower end of the upper rotating shaft; the upper end of the lower rotating shaft is provided with a lower shaft hole, the lower end of the intermediate shaft is connected in the lower shaft hole in a sliding manner, the lower end of the intermediate shaft is provided with a spring hole communicated with the lower shaft hole, a second spring used for forcing the intermediate shaft to move upwards is arranged between the intermediate shaft and the lower rotating shaft, the upper end of the second spring is abutted against the top end of the spring hole, and the lower end of the second spring is abutted against the bottom end of the lower shaft hole; the side surface of the intermediate shaft is provided with a limiting sliding groove communicated with the spring hole along the axial direction of the intermediate shaft, and the inner side wall of the lower shaft hole is provided with a limiting convex column extending into the limiting sliding groove;

5. The electric ball valve according to claim 4, wherein the second unidirectional rotating assembly comprises a second fixture block, a plurality of second ratchet grooves are uniformly formed in the side wall of the inner hole of the second gear along the circumferential direction at intervals, a second sliding groove is radially formed in the intermediate shaft, the second fixture block is two and is symmetrically and slidably connected in the second sliding groove, and a third spring for forcing the two second fixture blocks to abut against the second ratchet grooves is arranged in the second sliding groove; the intermediate shaft drives the second gear to rotate when rotating anticlockwise and does not drive the second gear to rotate when rotating clockwise.