CN111336276A

CN111336276A - Ball valve protection device for preventing incomplete opening and closing

Info

Publication number: CN111336276A
Application number: CN202010147976.7A
Authority: CN
Inventors: 唐显军; 田镇嘉; 张彬梁
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-06-26

Abstract

The invention provides a ball valve protection device for preventing incomplete opening and closing, which comprises a valve body and a valve core, wherein a push plate is movably inserted in a transverse plate, a tension spring is arranged between a first movable plate and a second movable plate, the right side of a movable shaft is fixedly connected with a shifting plate, the left side of the movable shaft is fixedly provided with a gear, the top of the transverse plate is fixedly connected with a fixed seat, the top of the fixed seat is movably inserted with a lifting toothed plate meshed with the gear, and the outer side of a valve rod is fixedly connected with a first contact plate and a second contact plate corresponding to the push. After the rotating handle, the valve rod rotates and reciprocates, the lifting toothed plate drives the gear to rotate through the rack section, the gear drives the first movable plate through the movable shaft, the shifting plate and the stop lever, and under the action of the tension spring, the second movable plate is driven to turn to and impact on the pushing groove, so that the pushing plate impacts the contact plate, the valve rod rotates to the position, the phenomenon that the valve is in an incomplete opening state is avoided, and the service life and the working reliability are improved.

Description

Ball valve protection device for preventing incomplete opening and closing

Technical Field

The invention relates to the technical field of ball valve equipment, in particular to a ball valve protection device for preventing incomplete opening and closing.

Background

The valve is a device used for controlling the direction, pressure and flow of fluid in a fluid system, wherein a ball valve is commonly used, the structure of the ball valve mainly comprises a valve body, a valve core and a valve rod, the valve core is spherical, a through groove is formed in the valve core, when the through groove of the valve core is aligned with pipelines at two ends of the valve body, the valve is in an open state, and fluid can pass through the valve; when the through groove of the valve core is staggered with the pipelines at the two ends of the valve body, the valve is in a closed state, and fluid cannot pass through the valve.

The ball valve is generally only used as a fully-opened or fully-closed cut-off position, switching control is carried out by rotating the valve rod, after the ball valve is used for a long time, the valve rod is abraded, or the valve core is impacted by fluid, so that the valve rod and the valve core are not in a fully-opened or fully-closed position, when the valve is in a half-opened state, the phenomena of dislocation, loosening, seizure and the like of a valve rod screw and a valve rod nut screw can be caused by the impact of the fluid, so that the fluid regulation and control are failed, and the service life of the valve is shortened.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a ball valve protection device for preventing incomplete opening and closing, which is achieved by the following specific technical means:

a ball valve protection device for preventing incomplete opening and closing comprises a valve body and a valve core, wherein a valve rod extending to the upper part of the valve body is fixedly installed at the top of the valve core, a handle is fixedly connected at the top of the valve rod, an outer seat is fixedly connected at the top of the valve body and positioned on the outer side of the valve rod, a transverse plate is fixedly connected to the inner left wall of the outer seat, a push plate is movably inserted and connected inside the transverse plate, a support plate is fixedly connected to the inner top wall of the outer seat, a first movable plate and a second movable plate are movably installed at the left side of the support plate through a rotating shaft, a tension spring is installed between the first movable plate and the second movable plate, two limiting rods corresponding to the first movable plate are fixedly connected to the left side of the support plate, a movable shaft is movably installed inside the outer seat and positioned on the left side of the first movable plate, a, the top fixedly connected with fixing base of diaphragm, the top activity of fixing base is pegged graft and is had the lifting tooth board that meshes mutually with the gear, and the outside fixedly connected with of valve rod corresponds with push pedal contact board one and contact board two.

Preferably, the connection relation of the valve rod and the valve body is threaded connection, a threaded section is arranged on the valve rod and located inside the valve body, and when the handle is rotated to drive the valve rod and the valve core to rotate and move up and down, the valve is opened and closed.

Preferably, the push plate is provided with a protruding section, and the transverse plate is provided with a limiting sliding groove corresponding to the push plate at the beginning, so that the sliding range of the push plate is limited.

Preferably, the lower end of the first movable plate and the upper end of the second movable plate are movably hinged to the rotating shaft, and two ends of the tension spring are respectively installed at the upper end of the first movable plate and the lower end of the second movable plate.

Preferably, the bottom of the second movable plate is inserted into the push plate, the top of the push plate is provided with a pushing groove corresponding to the second movable plate, and when the second movable plate rotates around the rotating shaft, the second movable plate collides with the pushing groove to drive the push plate to move.

Preferably, the pressure spring is installed to the bottom of lifting tooth plate, and lifting tooth plate's top extends to the below of handle, is provided with the rack section that corresponds with the gear on the lifting tooth plate, and lifting tooth plate supports the lower extreme at the handle under the effect of pressure spring, and when lifting tooth plate moved down by the handle extrusion, it was rotatory to drive the gear through the rack section.

Preferably, the first contact plate and the second contact plate are staggered up and down, and when the valve rod rotates and moves up and down, the two contact plates can respectively move to two ends of the push plate.

Advantageous effects

Compared with the prior art, the invention provides a ball valve protection device for preventing incomplete opening and closing, which has the following beneficial effects:

1. the ball valve protection device for preventing incomplete opening and closing is characterized in that after a handle is rotated to open a valve, the handle drives a valve rod and a valve core to rotate and move downwards, when a lifting toothed plate is extruded and moved downwards by the handle, a gear is driven to rotate through a rack section, the gear drives a first movable plate through a movable shaft, a shifting plate and a stop lever, and under the action of a tension spring, a second movable plate is driven to rotate and impact on a pushing groove, so that a pushing plate impacts a contact plate, the valve rod rotates in place, and the valve core is ensured to rotate to a completely opened position,

2. this prevent incomplete ball valve protection device of switching withstands the push pedal through setting up extension spring and fly leaf, can effectually avoid the valve rod gyration, has guaranteed that the valve is in the state of opening completely all the time, has avoided the valve to be in incomplete open mode, receives the fluid impact force to lead to valve pole screw and valve pole nut silk dislocation, pine to take off, bite dead phenomenon, has improved life and operational reliability.

3. This prevent incomplete ball valve protection device of switching, on the same hand, when the valve is closed to the swing handle, the lifting tooth plate shifts up under the effect of pressure spring and resets to drive overall device and reply initial condition, guaranteed equally that the valve is in complete closed state all the time, realized opening and when closing the valve, can both keep the valve rod rotatory to the position automatically, and can reply convenience simple to use automatically.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;

FIG. 3 is a right-side view of the connecting structure of the movable plate and the push plate in the closed state of the valve according to the present invention;

FIG. 4 is a schematic view of a contact plate and valve stem mounting arrangement of the present invention;

FIG. 5 is a schematic view of the connection structure of the push plate and the contact plate in the closed state of the valve of the present invention

FIG. 6 is a right-side view of the connection structure of the movable plate and the push plate in the open state of the valve according to the present invention;

fig. 7 is a schematic view of a connection structure between a push plate and a contact plate when the valve is in an open state.

In the figure: 1. a valve body; 2. a valve core; 3. a valve stem; 4. a handle; 5. an outer seat; 6. a transverse plate; 7. pushing the plate; 701. a pushing groove; 8. a support plate; 9. a first movable plate; 10. a second movable plate; 11. a tension spring; 12. a limiting rod; 13. a movable shaft; 14. dialing a plate; 15. a stop lever; 16. a gear; 17. a fixed seat; 18. a lifting toothed plate; 19. a first contact plate; 20. and a second contact plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, a ball valve protection device for preventing incomplete opening and closing comprises a valve body 1 and a valve core 2, a valve rod 3 extending above the valve body 1 is fixedly installed at the top of the valve core 2, a handle 4 is fixedly connected at the top of the valve rod 3, an outer seat 5 is fixedly connected at the top of the valve body 1 and positioned at the outer side of the valve rod 3, a transverse plate 6 is fixedly connected to the inner left wall of the outer seat 5, a push plate 7 is movably inserted into the transverse plate 6, a support plate 8 is fixedly connected to the inner top wall of the outer seat 5, a first movable plate 9 and a second movable plate 10 are movably installed at the left side of the support plate 8 through a rotating shaft, a tension spring 11 is installed between the first movable plate 9 and the second movable plate 10, two limit rods 12 corresponding to the first movable plate 9 are fixedly connected to the left side of the support plate 8, a movable shaft 13 is movably installed at the left, the right side of the shifting plate 14 is fixedly connected with a stop lever 15 corresponding to the first movable plate 9, the left side of the movable shaft 13 is fixedly provided with a gear 16, the top of the transverse plate 6 is fixedly connected with a fixed seat 17, the top of the fixed seat 17 is movably inserted with a lifting toothed plate 18 engaged with the gear 16, and the outer side of the valve rod 3 is fixedly connected with a first contact plate 19 and a second contact plate 20 corresponding to the push plate 7.

Wherein, the connection relation of valve rod 3 and valve body 1 is threaded connection, and the inside that just is located valve body 1 on the valve rod 3 is provided with the screw thread section, when twist grip 4 drives valve rod 3 and case 2 rotation and reciprocates, opens and closes the operation to the valve.

Wherein, be provided with protruding section on the push pedal 7, and the inside of diaphragm 6 begins to have the spacing spout that corresponds with push pedal 7, prescribes a limit to the sliding range of push pedal 7.

The lower end of the first movable plate 9 and the upper end of the second movable plate 10 are both movably hinged to the rotating shaft, and the two ends of the tension spring 11 are respectively mounted at the upper end of the first movable plate 9 and the lower end of the second movable plate 10, so that when the first movable plate 9 swings, the tension spring 11 can drive the second movable plate 10 to swing suddenly.

The bottom of the second movable plate 10 is inserted into the push plate 7, the top of the push plate 7 starts to have a pushing groove 701 corresponding to the second movable plate 10, and when the second movable plate 10 rotates around the rotating shaft, the pushing groove 701 is impacted to drive the push plate 7 to move.

Wherein, the pressure spring is installed to the bottom of lifting rack 18, and lifting rack 18's top extends to the below of handle 4, is provided with the rack section that corresponds with gear 16 on lifting rack 18, and lifting rack 18 supports the lower extreme at handle 4 under the effect of pressure spring, and when lifting rack 18 was moved down by the extrusion of handle 4, it was rotatory to drive gear 16 through the rack section.

The first contact plate 19 and the second contact plate 20 are staggered up and down, and when the valve rod 3 rotates and moves up and down, the two contact plates move to the two ends of the push plate 7 respectively.

When the valve is in a closed state in use, as shown in fig. 1-5, the lifting toothed plate 18 is abutted against the lower end of the handle 4 under the action of the pressure spring; the state of the movable plate is shown in fig. 3, the second movable plate 10 is pressed against the right side of the push plate 7; at this time, the movable plate 10 abuts against the contact plate 19, as shown in fig. 5; under the action of the tension spring 11, the bottom end of the second movable plate 10 is located at the rightmost end of the pushing groove 701 in fig. 3, so that the pushing plate 7 is ensured to enable the valve rod 3 and the valve core 2 to be in a completely closed state through the first contact plate 19.

After the handle 4 is rotated to open the valve, the handle 4 drives the valve rod 3 and the valve core 2 to rotate and move downwards, when the lifting toothed plate 18 is extruded by the handle 4 to move downwards, the gear 16 is driven to rotate through the rack section, the gear 16 drives the movable plate one 9 through the movable shaft 13, the shifting plate 14 and the stop rod 15, and under the action of the tension spring 11, the movable plate two 10 is driven to rotate and impact the leftmost end of the pushing groove 701 as shown in fig. 6, so that in fig. 7, the push plate 7 moves downwards rapidly, because the contact plate two 20 also moves to the lower part of the push plate 7 in the rotating and downwards moving process of the valve rod 3, the push plate 7 can impact the contact plate two 20, further the valve rod 3 rotates in place, the valve core 2 is ensured to rotate to the fully-opened position, the valve rod 3 can be prevented from rotating, the valve is ensured to be always in the fully-opened state, and the valve, the phenomena of dislocation, loosening and seizure of the valve rod screw and the valve rod nut screw caused by the impact force of the fluid improve the service life and the safety.

In a similar way, when the valve is closed by the rotary handle 4, the lifting toothed plate 18 moves upwards under the action of the pressure spring to reset, and drives the whole device to return to an initial state, so that the valve is always in a completely closed state.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A ball valve protection device for preventing incomplete opening and closing comprises a valve body (1) and a valve core (2), and is characterized in that: the valve comprises a valve body (1), a valve rod (3) extending to the upper part of the valve body (1) is fixedly installed at the top of the valve core (2), a handle (4) is fixedly connected to the top of the valve rod (3), an outer seat (5) is fixedly connected to the top of the valve body (1) and located on the outer side of the valve rod (3), a transverse plate (6) is fixedly connected to the inner left wall of the outer seat (5), a push plate (7) is movably inserted into the inner portion of the transverse plate (6), a support plate (8) is fixedly connected to the inner top wall of the outer seat (5), a first movable plate (9) and a second movable plate (10) are movably installed on the left side of the support plate (8) through a rotating shaft, a tension spring (11) is installed between the first movable plate (9) and the second movable plate (10), two limiting rods (12) corresponding to the first movable plate (9) are fixedly connected to the left side, the right side fixedly connected with of loose axle (13) dials board (14), dial right side fixedly connected with of board (14) and fender rod (15) that fly leaf (9) correspond, the left side fixed mounting of loose axle (13) has gear (16), the top fixedly connected with fixing base (17) of diaphragm (6), the top activity of fixing base (17) is pegged graft and is had lifting toothed plate (18) with gear (16) engaged with, the outside fixedly connected with of valve rod (3) and contact plate one (19) and contact plate two (20) that push pedal (7) correspond.

2. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the valve rod (3) is in threaded connection with the valve body (1), and a threaded section is arranged on the valve rod (3) and located inside the valve body (1).

3. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the push plate (7) is provided with a protruding section, and the inner part of the transverse plate (6) starts to be provided with a limiting sliding groove corresponding to the push plate (7).

4. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the lower end of the first movable plate (9) and the upper end of the second movable plate (10) are movably hinged to the rotating shaft, and two ends of the tension spring (11) are respectively installed at the upper end of the first movable plate (9) and the lower end of the second movable plate (10).

5. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the bottom of the second movable plate (10) is inserted into the push plate (7), and the top of the push plate (7) starts to be provided with a pushing groove (701) corresponding to the second movable plate (10).

6. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the bottom of lifting tooth plate (18) is installed the pressure spring, and the top of lifting tooth plate (18) extends to the below of handle (4), is provided with the rack section that corresponds with gear (16) on lifting tooth plate (18).

7. A ball valve protection device for preventing incomplete opening and closing according to claim 1, wherein: the first contact plate (19) and the second contact plate (20) are staggered up and down.