CN213575582U

CN213575582U - Rear cover locking type anti-sagging butterfly valve

Info

Publication number: CN213575582U
Application number: CN202021829230.6U
Authority: CN
Inventors: 段树龙
Original assignee: Tianjin Yifa Technology Co ltd
Current assignee: Tianjin Yifa Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-06-29
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a flagging butterfly valve is prevented to back lid locking formula belongs to valve technical field, including the butterfly valve main part, the internally mounted of butterfly valve main part has the valve rod, the ring channel has been seted up in the outside of valve rod bottom, the bottom of butterfly valve main part is fixed with fixed pipe, evenly be provided with the gag lever post on the fixed pipe, the one end of gag lever post runs through and extends to the inside of fixed pipe, and gag lever post and fixed pipe swing joint, the one end of gag lever post is provided with the ball, the outside of gag lever post is fixed with the spacing ring, fixedly connected with spring between spacing ring and the fixed pipe. The utility model discloses can be through threaded connection with the back lid locking of butterfly valve in the bottom of butterfly valve, not only the fastness can prevent by force that valve rod and back lid from producing wearing and tearing and lead to the valve rod to reciprocate, the operating procedure of dismouting valve rod is simple moreover, makes things convenient for the staff to dismantle and install the valve rod, and the work of changing valve rod and sealing washer for people provides convenient.

Description

Rear cover locking type anti-sagging butterfly valve

Technical Field

The utility model relates to a butterfly valve especially relates to a flagging butterfly valve is prevented to back lid locking formula, belongs to valve technical field.

Background

The butterfly valve is a regulating valve with a relatively simple structure, is generally mainly used for cutting off or throttling various types of fluids such as water, various corrosive media, slurry, oil, liquid metal and the like in a pipeline, and is also particularly important in sealing performance because the butterfly valve is mainly used for various types of fluids;

the valve rod bottom in the butterfly valve can be locked, the valve rod can only rotate but can not move up and down, the bottom of the valve rod can not be contacted and rubbed with the bottom wall of the rear cover, the locking mode can prevent the valve rod from moving up and down, the abrasion is reduced, but the valve rod after being installed is blocked at a base position, the valve rod is very difficult to disassemble and replace when the valve rod needs to be disassembled, the valve rod can not be disassembled, the sealing ring can be directly replaced, and the sealing performance of the butterfly valve can be deteriorated due to the fact that the sealing ring is not replaced for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a flagging butterfly valve is prevented to back lid locking formula to solve the problem of the dismouting of being not convenient for among the prior art.

The purpose of the utility model can be achieved by adopting the following technical scheme:

a back cover locking type anti-sagging butterfly valve comprises a butterfly valve body, wherein a valve rod is installed inside the butterfly valve body, a ring groove is formed in the outer side of the bottom end of the valve rod, a fixed pipe is fixed at the bottom of the butterfly valve body, a limiting rod is uniformly arranged on the fixed pipe, one end of the limiting rod penetrates through and extends into the fixed pipe, the limiting rod is movably connected with the fixed pipe, a ball is arranged at one end of the limiting rod, a limiting ring is fixed on the outer side of the limiting rod, a spring is fixedly connected between the limiting ring and the fixed pipe, a first internal thread pipe is fixed at the bottom of the butterfly valve body, a back cover is arranged between the first internal thread pipe and the fixed pipe, an extrusion ring is fixed inside the back cover, an external thread pipe is fixed on the outer side of the back cover, the external thread pipe is meshed with the first internal thread pipe, a rotary disc is fixed at the top of the valve, the top of butterfly valve main part is provided with stop gear, be provided with the protection component in the butterfly valve main part.

Preferably: stop gear includes two-way screw rod, splint and slide rail, two-way screw rod is located the top of butterfly valve main part, and two-way screw rod rotates with the butterfly valve main part to be connected, two-way screw rod's outside symmetry is provided with second internal thread pipe, and is two sets of second internal thread pipe all with two-way screw rod threaded connection, and is two sets of second internal thread pipe all is fixed with splint, the slide rail is located the top of butterfly valve main part, and slide rail and splint sliding connection.

Preferably: the protection assembly comprises a supporting plate and a shielding plate, the supporting plate is located at the top of the butterfly valve main body, and the shielding plate is rotatably connected to the top of the supporting plate.

Preferably: the splint are arc-shaped plates, and the inner sides of the splint are fixed with the polishing pads.

Preferably: one end of the limiting rod is arranged to be an inclined plane, the top of the extrusion ring is provided with an inclined plane matched with the limiting rod, and the annular groove is an arc-shaped annular groove.

Preferably: the top of shielding plate is fixed with the handle, and the outside of handle is provided with anti-skidding line.

The utility model has the advantages that:

the utility model provides a pair of flagging butterfly valve is prevented to back lid locking formula: through the mutual matching use of the fixed pipe, the limiting rod, the ball, the limiting ring, the spring, the first internal threaded pipe, the rear cover, the extrusion ring and the external threaded pipe, the rear cover of the butterfly valve can be locked at the bottom of the butterfly valve through threaded connection, the valve rod can be prevented from moving up and down due to abrasion of the valve rod and the rear cover due to strong firmness, the operation steps of disassembling and assembling the valve rod are simple, workers can conveniently disassemble and assemble the valve rod, and convenience is provided for the work of replacing the valve rod and the sealing ring by people; the bidirectional screw, the second internal threaded pipe, the clamping plate and the sliding rail are matched with each other for use, so that a turntable rod of the butterfly valve can be quickly locked, the butterfly plate can be prevented from rotating or the turntable is operated by mistake to cause flow change, and the butterfly valve is convenient and quick to operate and saves time and labor; through the use of mutually supporting of backup pad and shielding plate, can shelter from the junction of butterfly valve top and carousel when not using, when avoiding the outdoor butterfly valve of using, sunshine or rainwater erosion carousel department lead to the rust rotation difficulty of carousel junction or even unable pivoted problem to improve the protecting effect of butterfly valve, prolonged the life of butterfly valve.

Drawings

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

fig. 2 is an enlarged view of the structure at a in fig. 1 of the present invention;

fig. 3 is an enlarged view of the structure at B in fig. 1 according to the present invention;

fig. 4 is a schematic view of the connection between the second internal thread tube and the clamping plate of the present invention.

In the figure: 1. a butterfly valve body; 2. a valve stem; 3. an annular groove; 4. a fixed tube; 5. a limiting rod; 6. a ball bearing; 7. a limiting ring; 8. a spring; 9. a first internally threaded tube; 10. a rear cover; 11. an extrusion ring; 12. an externally threaded tube; 13. a turntable; 14. a bidirectional screw; 15. a second internally threaded tube; 16. a splint; 17. a slide rail; 18. a support plate; 19. a shielding plate.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-4, the embodiment provides a back cover locking type anti-sagging butterfly valve, which comprises a butterfly valve body 1, a valve rod 2 is installed inside the butterfly valve body 1, an annular groove 3 is formed on the outer side of the bottom end of the valve rod 2, a fixed pipe 4 is fixed at the bottom of the butterfly valve body 1, a limiting rod 5 is uniformly arranged on the fixed pipe 4, one end of the limiting rod 5 penetrates through and extends into the fixed pipe 4, the limiting rod 5 is movably connected with the fixed pipe 4, a ball 6 is arranged at one end of the limiting rod 5, a limiting ring 7 is fixed on the outer side of the limiting rod 5, a spring 8 is fixedly connected between the limiting ring 7 and the fixed pipe 4, a first internal threaded pipe 9 is fixed at the bottom of the butterfly valve body 1, a back cover 10 is arranged between the first internal threaded pipe 9 and the fixed pipe 4, a pressing ring 11 is fixed inside the back cover 10, an external threaded pipe 12 is fixed on the outer side of the back cover 10, the external threaded pipe, the top of the valve rod 2 is fixed with a rotary disc 13, the top of the butterfly valve body 1 is provided with a limiting mechanism, and the butterfly valve body 1 is provided with a protection component.

In this embodiment, as shown in fig. 2, the limiting mechanism includes a two-way screw 14, a clamping plate 16 and a sliding rail 17, the two-way screw 14 is located at the top of the butterfly valve body 1, the two-way screw 14 is rotatably connected to the butterfly valve body 1, second internal threaded pipes 15 are symmetrically arranged on the outer side of the two-way screw 14, two sets of the second internal threaded pipes 15 are both in threaded connection with the two-way screw 14, the clamping plate 16 is fixed to both sets of the second internal threaded pipes 15, the sliding rail 17 is located at the top of the butterfly valve body 1, and the sliding rail 17 is slidably connected to the clamping plate 16, when the rotating disc 13 drives the valve rod 2 to rotate to a suitable angle, the two-way screw 14 is rotated, the two-way screw 14 drives the two second internal threaded pipes 15 to move towards the middle, the two second internal threaded pipes 15 also drive the clamping plate 16 to approach the rotating disc 13 at the, prevent that carousel 13 from rotating because of the maloperation, can die the carousel pole lock of butterfly valve fast, not only can prevent that the butterfly plate from revolving or the maloperation carousel from resulting in the flow to change, convenient operation is swift moreover, labour saving and time saving.

In this embodiment, as shown in fig. 1, the protection component includes backup pad 18 and shielding plate 19, backup pad 18 is located the top of butterfly valve main part 1, the top of backup pad 18 is rotated and is connected with shielding plate 19, turn shielding plate 19 to the top of carousel 13, protect protection such as sun-proof and rain-proof to carousel 13, it can to turn shielding plate 19 level to the opposite side when maintaining the butterfly valve, when avoiding the outdoor use butterfly valve, sunshine or rainwater corrode carousel 13 department lead to the rust problem of rotation difficulty or even unable pivoted problem of carousel 13 junction, thereby the protecting effect of butterfly valve has been improved, the life of butterfly valve has been prolonged.

In this embodiment, as shown in fig. 4, the clamping plate 16 is an arc-shaped plate, and a friction increasing pad is fixed on the inner side of the clamping plate 16, so as to increase the friction between the clamping plate 16 and the outer side of the turntable 13, and further prevent the turntable 13 from rotating.

In this embodiment, as shown in fig. 2, the one end of gag lever post 5 sets up to the inclined plane, and the top of extrusion ring 11 sets up the inclined plane with gag lever post 5 assorted, ring channel 3 is the circular arc annular groove, can promote gag lever post 5 more easily and remove to the axle center of fixed pipe 4 when back lid 10 drives extrusion ring 11 and moves upwards, is the arc design in the ring channel 3, can reduce the valve rod 2 when rotating in the ring channel 3 with the friction loss of ball 6.

In this embodiment, as shown in fig. 1, a handle is fixed on the top of the shielding plate 19, and anti-slip threads are disposed on the outer side of the handle, so that people can rotate the shielding plate 19 conveniently.

As shown in fig. 1 to 4, the present embodiment provides a working process of a back cover locking type anti-sagging butterfly valve as follows:

step 1: the valve rod 2 penetrates through the butterfly valve main body 1, the rear cover 10 is rotated, under the engagement of the external thread pipe 12 and the first internal thread pipe 9, the whole rear cover 10 moves upwards, the extrusion ring 11 in the rear cover 10 moves upwards simultaneously and extrudes and pushes the limiting rod 5 to move towards the axis direction of the fixed pipe 4 until the ball 6 at one end of the ball 6 is inserted into the annular groove 3 on the outer side of the valve rod 2, the inside of the annular groove 3 is designed in an arc shape, so that the friction loss between the ball 6 and the ball 6 is reduced, the rear cover 10 only needs to rotate in the opposite direction during disassembly, the whole rear cover 10 moves downwards without the extrusion of the extrusion ring 11, the limiting rod 5 extends outwards under the elastic action of the limiting ring 7, the ball 6 is separated from the annular groove 3, and the valve rod 2 can be pulled out upwards;

step 2: when the rotary table 13 drives the valve rod 2 to rotate to a proper angle, the two-way screw 14 is rotated, the two-way screw 14 drives the two second internal thread pipes 15 to move towards the middle, the two second internal thread pipes 15 also drive the clamping plate 16 to approach the rotary table 13 at the same time until the clamping plate 16 is contacted with the rotary table 13 and is tightly attached to the outer side of the rotary table 13, the rotary table 13 is locked, and the rotary table 13 is prevented from rotating due to misoperation;

and step 3: the shielding plate 19 is rotated to the top of the rotating disc 13, the rotating disc 13 is protected against sun, rain and the like, and the shielding plate 19 is horizontally rotated to the other side when the butterfly valve is maintained.

The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.

Claims

1. The utility model provides a flagging butterfly valve is prevented to back lid locking formula which characterized in that: comprises a butterfly valve main body (1), a valve rod (2) is arranged inside the butterfly valve main body (1), a ring groove (3) is formed in the outer side of the bottom end of the valve rod (2), a fixed pipe (4) is fixed at the bottom of the butterfly valve main body (1), a limiting rod (5) is uniformly arranged on the fixed pipe (4), one end of the limiting rod (5) penetrates through and extends into the fixed pipe (4), the limiting rod (5) is movably connected with the fixed pipe (4), a ball (6) is arranged at one end of the limiting rod (5), a limiting ring (7) is fixed on the outer side of the limiting rod (5), a spring (8) is fixedly connected between the limiting ring (7) and the fixed pipe (4), a first internal thread pipe (9) is fixed at the bottom of the butterfly valve main body (1), a rear cover (10) is arranged between the first internal thread pipe (9) and the fixed pipe (4), the inside of back lid (10) is fixed with extrusion ring (11), the outside of back lid (10) is fixed with external screw thread pipe (12), external screw thread pipe (12) mesh mutually with first internal thread pipe (9), valve rod (2) top is fixed with carousel (13), the top of butterfly valve main part (1) is provided with stop gear, be provided with protection component on butterfly valve main part (1).

2. The back cover locking type anti-droop butterfly valve of claim 1, wherein: stop gear includes two-way screw rod (14), splint (16) and slide rail (17), two-way screw rod (14) are located the top of butterfly valve main part (1), and two-way screw rod (14) rotate with butterfly valve main part (1) and are connected, the outside symmetry of two-way screw rod (14) is provided with second internal thread pipe (15), and is two sets of second internal thread pipe (15) all with two-way screw rod (14) threaded connection, two sets of second internal thread pipe (15) all are fixed with splint (16), slide rail (17) are located the top of butterfly valve main part (1), and slide rail (17) and splint (16) sliding connection.

3. The back cover locking type anti-droop butterfly valve of claim 1, wherein: the protection assembly comprises a supporting plate (18) and a shielding plate (19), the supporting plate (18) is located at the top of the butterfly valve main body (1), and the shielding plate (19) is rotatably connected to the top of the supporting plate (18).

4. The back cover locking type anti-droop butterfly valve of claim 2, wherein: the clamping plate (16) is an arc-shaped plate, and a polishing pad is fixed on the inner side of the clamping plate (16).

5. The back cover locking type anti-droop butterfly valve of claim 1, wherein: one end of the limiting rod (5) is arranged to be an inclined plane, the top of the extrusion ring (11) is arranged to be the inclined plane matched with the limiting rod (5), and the annular groove (3) is an arc-shaped annular groove.

6. The back cover locking type anti-droop butterfly valve of claim 3, wherein: the top of the shielding plate (19) is fixed with a handle, and the outer side of the handle is provided with anti-skidding lines.