CN214037089U

CN214037089U - Mechanical device applied to ball valve position locking and positioning functions

Info

Publication number: CN214037089U
Application number: CN202022922029.9U
Authority: CN
Inventors: 李捷; 臧兴华; 陈礼福; 柳孝清; 罗尧; 张旋
Original assignee: China Valves Technology Changsha Co Ltd
Current assignee: China Valves Technology Changsha Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-24
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a mechanical device applied to the position locking and positioning functions of a ball valve, the bottom end of the connecting lever is connected with a servomotor, the edge part of the connecting lever is movably connected with an operating handle, a screw hole of a screw rod is arranged at the position corresponding to the operating handle in the connecting lever, the end part of the operating handle is positioned at the inner side of the screw hole of the screw rod and is connected with the transmission screw rod, the full-open and full-close positions of the valve body can share one locking device through the valve body, the crank arm, the operating handle, the transmission screw rod, the locking pin and the locking pin hole, the locking pin can be normally put into the fully-opened and fully-closed positions through a large-clearance matching mechanism, therefore, the full opening and closing processes of the valve body become simpler and more convenient, the whole structure of the valve body is simpler through sharing one locking device, the valve body is complete in function, and the locking is reliable. Meanwhile, the accurate positioning of valve factory assembly and field installation is realized by arranging the movable accurate positioning sleeve.

Description

Mechanical device applied to ball valve position locking and positioning functions

Technical Field

The utility model relates to a ball valve technical field specifically is a be applied to ball valve position locking and locate function's mechanical device.

Background

The ball valve is a valve whose opening and closing part ball body is driven by a valve rod and makes rotary motion around the axis of the ball valve, and can also be used for regulating and controlling fluid, and the existing ball valve is mainly applied to a water pump outlet, a water turbine inlet or a water delivery pipeline, provides a simple and systematic solution for cutting off and communicating media, protecting a unit and the safety of the pipeline, and is a key and advanced control device which is more suitable for medium and high water head pipelines;

the full-open and full-close positions of the existing ball valve need to be opened and closed through the locking devices corresponding to the ball valve, so that the overall structure of the ball valve is complex, and the opening and closing processes of the ball valve are complex.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be applied to ball valve position locking and locate function's mechanical device, the switch that the full-open and the full-close position that can effectively solve to propose current ball valve among the above-mentioned background art need realize the ball valve through the locking device who corresponds with it, and then leads to ball valve overall structure complicated, leads to opening of ball valve and the problem that the process of closing is complicated simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a mechanical device applied to position locking and positioning functions of a ball valve comprises a valve body, wherein the edge of the valve body is connected with a crank arm, the bottom end of the crank arm is connected with a servomotor, the edge of the crank arm is movably connected with an operating handle, a screw rod screw hole is formed in the position, corresponding to the operating handle, in the crank arm, the end part of the operating handle, which is positioned at the inner side of the screw rod screw hole, is connected with a transmission screw rod, an end cover nut is installed at the position, which is positioned at the middle part of the transmission screw rod, of the edge end of the crank arm, and a locking nut is connected to the position, which is positioned at the edge of the end cover nut, of the outer side of the transmission screw rod through threaded engagement;

the other end of the transmission screw rod is rotatably connected with a locking pin at one side far away from the operating handle, a locking pin hole is formed in the position, corresponding to the locking pin, in the valve body, and an accurate positioning sleeve is sleeved at the joint of the edge end of the valve body and the locking pin;

the stop pin is characterized in that a limiting screw hole is formed in the top end of the crank arm, a limiting screw is connected to the inside of the limiting screw hole in a threaded engagement mode, and a rectangular groove is formed in the position, corresponding to the limiting screw, of the edge of the top end of the stop pin.

Preferably, the crank arm side end and the end cover nut are provided with a fastening screw hole at the corresponding position, the end cover nut is internally connected with a fastening nut in a penetrating way through threads, and the end cover nut is closely matched and connected with the fastening screw hole through the fastening nut inside the end cover nut.

Preferably, the valve body is provided with a positioning groove at a position corresponding to the accurate positioning sleeve, the accurate positioning sleeve is embedded in the positioning groove, and after the locking pin is embedded in the locking pin hole, the corner arm edge end is in close contact with the accurate positioning sleeve.

Preferably, the rectangular groove is formed along the top excircle of the locking pin, and the length of the rectangular groove is equal to the stroke of the locking pin.

Preferably, the bottom end of the limit screw is in contact with the inner wall of the rectangular groove.

Preferably, the outer diameter of the bottom end of the limit screw is equal to the inner diameter of the rectangular groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. the full-open and full-close locking device of the valve body can be shared by the valve body, the crank arm, the operating handle, the transmission screw rod, the locking pin and the locking pin hole, the locking pin can be ensured to be normally put into full-open and full-close positions through a large-gap matching mechanism, so that the full-open and full-close processes of the valve body become simpler and more convenient, the whole structure of the valve body is simpler through the shared locking device, the valve body is complete in function, and the locking is reliable. Meanwhile, the accurate positioning of valve factory assembly and field installation is realized by arranging the movable accurate positioning sleeve.

2. The locking device of the valve body can adopt a large-gap matching mechanism through the transmission screw rod, the locking pin hole and the accurate positioning sleeve, so that the locking pin can be normally put into full opening and full closing positions through the large-gap matching mechanism, and accurate positioning of valve factory assembly and field installation is realized through the accurate positioning sleeve.

3. The accurate spacing that drops into and remove when having realized the locking pin locking through spacing screw, stop screw and rectangular channel, and move in the rectangular channel through stop screw for when the rectangular channel front and back and stop screw contact, the stop pin can be in all and drop into and remove the position, has guaranteed the precision that the stop pin dropped into and removed.

4. Through the end cover nut, the locking nut and the transmission screw rod, the transmission screw rod limits the position of the transmission screw rod through the locking nut in the process of driving the locking pin to move, so that the position of the locking pin in the locking pin hole is changed, and the locking function of any position of the locking pin is realized.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a connection structure of the locking pin and the limit screw according to the present invention;

fig. 3 is a schematic structural view of the locking pin of the present invention in the engaged state;

fig. 4 is a schematic structural view showing a lock pin releasing state of the present invention;

reference numbers in the figures: 1. a valve body; 2. a crank arm; 3. a servomotor; 4. an operating handle; 5. a screw hole of the screw rod; 6. a transmission screw rod; 7. an end cap nut; 8. locking the nut; 9. a locking pin; 10. a locking pin hole; 11. a precise positioning sleeve; 12. a limiting screw hole; 13. a limit screw; 14. a rectangular groove.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in figures 1-4, the utility model provides a technical scheme, a mechanical device applied to the position locking and positioning functions of a ball valve, which comprises a valve body 1, a crank arm 2 is connected with the edge of the valve body 1, a servomotor 3 is connected with the bottom end of the crank arm 2, an operating handle 4 is movably connected with the edge of the crank arm 2, a screw rod screw hole 5 is arranged in the crank arm 2 at the position corresponding to the operating handle 4, a transmission screw rod 6 is connected with the end part of the operating handle 4 at the position inside the screw rod screw hole 5, an end cap nut 7 is arranged at the position of the edge end of the crank arm 2 at the middle part of the transmission screw rod 6, a fastening screw hole is arranged at the position of the edge of the crank arm 2 corresponding to the end cap nut 7, a fastening nut is penetratingly connected inside the end cap nut 7 through screw threads, and the end cap nut 7 is tightly connected with the fastening screw hole through the fastening nut inside, thereby facilitating the fixed connection and convenient disassembly between the end cap nut 7 and the crank arm 2, the outer side of the transmission screw rod 6 is positioned at the edge part of the end cover nut 7 and is connected with a locking nut 8 through thread engagement;

the other end of the transmission screw rod 6 is rotatably connected with a locking pin 9 at one side far away from the operating handle 4, a locking pin hole 10 is formed in the position, corresponding to the locking pin 9, in the valve body 1, a precise positioning sleeve 11 is sleeved at the joint of the edge end of the valve body 1 and the locking pin 9, a positioning groove is formed in the position, corresponding to the precise positioning sleeve 11, of the valve body 1, the precise positioning sleeve 11 is embedded in the positioning groove, after the locking pin 9 is embedded in the locking pin hole 10, the edge end of the crank arm 2 is tightly contacted with the precise positioning sleeve 11, so that the precise positioning sleeve 11 is convenient to install, and meanwhile, the crank arm 2 is tightly matched with the valve body 1 after being connected;

limiting screw hole 12 has been seted up on 2 tops of turning arm, limiting screw hole 12 is inside to be connected with stop screw 13 through the thread engagement, stop pin 9 top edge portion corresponds position department with stop screw 13 and has seted up rectangular channel 14, stop screw 13 bottom contacts with the inner wall of rectangular channel 14, the external diameter of stop screw 13 bottom equals with the internal diameter of rectangular channel 14, be convenient for be connected between stop screw 13 and the rectangular channel 14, be convenient for come the position of locking pin 9 through stop screw 13 to restrict simultaneously, rectangular channel 14 is seted up along the top excircle of stop pin 9, the length of rectangular channel 14 equals with the stroke of stop pin 9, just in time be in the state of input and locking when making stop pin 9 be located 14 both ends positions departments of rectangular channel.

The utility model discloses a theory of operation and use flow: in the practical application process of the mechanical device applied to the position locking and positioning functions of the ball valve, firstly, when the valve body 1 needs to be fully opened, the limiting screw 13 is rotated, so that the limiting screw 13 is rotated out of the limiting screw hole 12, and the bottom end of the limiting screw 13 is moved out of the rectangular groove 14, so that the limitation of the limiting screw 13 on the locking pin 9 is removed;

then, the operating handle 4 is rotated, the transmission screw rod 6 is driven to rotate through the operating handle 4, the locking pin 9 is driven to move in the locking pin hole 10 through the transmission screw rod 6, so that the locking pin 9 can withdraw from the inside of the locking pin hole 10, and after the specified stroke of the locking pin 9 is reached, the limiting screw 13 is rotated again, so that the bottom end of the limiting screw 13 can be inserted into the rectangular groove 14, and because the length of the rectangular groove 14 is equal to the stroke of the locking pin 9, the bottom end of the limiting screw 13 can be abutted against the end part of the rectangular groove 14, and finally, the full-open position of the locking pin 9 is locked and limited;

when the valve body 1 needs to be fully closed, and after the limit screw 13 and the bottom of the limit screw are moved out of the rectangular groove 14, the operating handle 4 is rotated reversely, the transmission screw rod 6 and the locking pin 9 are rotated through the operating handle 4, so that the end part of the locking pin 9 moves into the locking pin hole 10 in the valve body 1, and after the end part moves to the specified stroke of the locking pin 9, the limit screw 13 is rotated to move in the limit screw hole 12 again according to the operation until the bottom of the limit screw is contacted with the rectangular groove 14, and at the moment, when the locking pin 9 is in a fully closed position, the bottom of the limit screw 13 is contacted with the other end of the rectangular groove 14, so that the full open position of the locking pin 9 is locked and limited;

when the valve body 1 is completely closed, after the locking pin 9 completely moves into the locking pin hole 10, the accurate positioning sleeve 11 at the edge end of the valve body 1 enables the locking pin 9 to be rapidly and accurately used for matching between the locking pin holes 10, and meanwhile, in the rotating process of the locking pin 9, the locking function of any position of the locking pin can be realized through the locking nut 8 at the edge end of the end cover nut 7.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be applied to ball valve position locking and locate function's mechanical device, includes valve body (1), valve body (1) limit portion is connected with crank arm (2), crank arm (2) bottom is connected with servomotor (3), its characterized in that: an operating handle (4) is movably connected to the edge of the connecting lever (2), a screw rod screw hole (5) is formed in the position, corresponding to the operating handle (4), in the connecting lever (2), the end portion of the operating handle (4) is located on the inner side of the screw rod screw hole (5) and is connected with a transmission screw rod (6), an end cover nut (7) is installed at the position, located on the middle portion of the transmission screw rod (6), of the edge end of the connecting lever (2), and a locking nut (8) is connected to the position, located on the edge of the end cover nut (7), of the outer side of the transmission screw rod (6) in a threaded engagement mode;

a locking pin (9) is rotatably connected to one side, away from the operating handle (4), of the other end of the transmission screw rod (6), a locking pin hole (10) is formed in the valve body (1) at a position corresponding to the locking pin (9), and a precise positioning sleeve (11) is sleeved at the joint of the edge end of the valve body (1) and the locking pin (9);

the connecting rod is characterized in that a limiting screw hole (12) is formed in the top end of the connecting rod arm (2), a limiting screw (13) is connected to the inside of the limiting screw hole (12) in a threaded engagement mode, and a rectangular groove (14) is formed in the position, corresponding to the limiting screw (13), of the top edge of the locking pin (9).

2. The mechanical device applied to the position locking and positioning functions of the ball valve according to claim 1, is characterized in that: the side end of the crank arm (2) is provided with a fastening screw hole at a position corresponding to the end cover nut (7), the end cover nut (7) is internally connected with the fastening nut in a penetrating way through threads, and the end cover nut (7) is tightly connected with the fastening screw hole through the internal fastening nut.

3. The mechanical device applied to the position locking and positioning functions of the ball valve according to claim 1, is characterized in that: the valve body (1) is provided with a positioning groove at the position corresponding to the accurate positioning sleeve (11), the accurate positioning sleeve (11) is embedded in the positioning groove, and after the locking pin (9) is embedded in the locking pin hole (10), the edge end of the crank arm (2) is in close contact with the accurate positioning sleeve (11).

4. The mechanical device applied to the position locking and positioning functions of the ball valve according to claim 1, is characterized in that: the rectangular groove (14) is formed along the top excircle of the locking pin (9), and the length of the rectangular groove (14) is equal to the stroke of the locking pin (9).

5. The mechanical device applied to the position locking and positioning functions of the ball valve according to claim 1, is characterized in that: the bottom end of the limiting screw (13) is in contact with the inner wall of the rectangular groove (14).

6. The mechanical device applied to the position locking and positioning functions of the ball valve according to claim 1, is characterized in that: the outer diameter of the bottom end of the limiting screw (13) is equal to the inner diameter of the rectangular groove (14).