CN212407620U

CN212407620U - Low-resistance low-loss lifting plug valve

Info

Publication number: CN212407620U
Application number: CN202021881778.5U
Authority: CN
Inventors: 田洪卫; 袁天发
Original assignee: Fluoroseal Specialty Valves Suzhou Co ltd
Current assignee: Fluoroseal Specialty Valves Suzhou Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-01-26
Anticipated expiration: 2030-09-02

Abstract

The utility model discloses a low-resistance and low-loss lifting plug valve, which comprises a plug valve mechanism and an anti-friction mechanism; the plug valve mechanism comprises a shell, wherein connecting mechanisms are arranged on water inlets and water outlets of the shell, a gland is arranged on the upper surface of the shell through mounting wires, a valve body is sleeved in the shell, a limiting mechanism is arranged between the bottom side of the valve body and the bottom side of the interior of the shell, a rotating rod is arranged on the upper surface of the valve body, a rotating rod is arranged on the side surface of the rotating rod, the top end of the rotating rod penetrates through the gland through an anti-friction mechanism, a lifting block is arranged at the top end of the rotating rod, and the lifting block is fixedly arranged; the anti-friction mechanism comprises a circular through hole, four spherical grooves are distributed in the inner side surface of the circular through hole in an array mode, and spheres are connected to the inner parts of the four spherical grooves in a rolling mode. The utility model discloses a friction between rotary rod and the closing cap has effectively been reduced, prevents to cause the rotary rod friction to decrease seriously, avoids appearing leaking between rotary rod and the closing cap, does not influence the life of this plug valve.

Description

Low-resistance low-loss lifting plug valve

Technical Field

The utility model relates to a lift-type plug valve technical field specifically is a low resistance hangs down lift-type plug valve.

Background

The lifting plug valve is a novel plug valve which is developed faster in recent years, adopts a valve operation mode of firstly lifting and then opening and closing, greatly reduces the opening and closing moment of the plug valve, is different from the traditional plug valve in that a rectangular reducing channel is adopted, the valve generally adopts a circular channel, so that the fluid resistance of the plug valve is greatly reduced, the metal hard sealing lifting plug valve has the advantages of a ball valve and a gate valve, can be used for high temperature and high pressure working conditions, and greatly expands the application range of the plug valve.

Current promotion formula plug valve work is mentioning the rotary rod to the rotation is opened, but the rotary rod makes a round trip to rotate like this and promote great with the friction between the closing cap of cock valve casing, causes the rotary rod friction loss serious, makes to appear leaking between the closing cap of rotary rod and cock valve casing, and the influence leads to the life of plug valve.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a low resistance low loss lifting plug valve, reduced frictional force between rotary rod and the closing cap, prevent to cause the rotary rod friction loss serious, avoid appearing leaking between rotary rod and the closing cap, do not influence the life of this plug valve, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a low-resistance and low-loss lifting plug valve comprises a plug valve mechanism and an anti-friction mechanism;

plug valve mechanism: the valve comprises a shell, wherein connecting mechanisms are arranged on water inlets and water outlets of the shell, a gland is arranged on the upper surface of the shell through mounting wires, a valve body is sleeved in the shell, a limiting mechanism is arranged between the bottom side of the valve body and the bottom side of the interior of the shell, a rotating rod is arranged on the upper surface of the valve body, a rotating rod is arranged on the side surface of the rotating rod, the top end of the rotating rod penetrates through the gland through an anti-friction mechanism, a lifting block is arranged at the top end of the rotating rod, and the lifting block is fixedly arranged on the upper surface of the gland;

antifriction mechanism: the ball-shaped groove structure comprises a circular through hole, wherein four ball-shaped grooves are distributed in the inner side surface of the circular through hole in an array mode, and balls are connected inside the four ball-shaped grooves in a rolling mode;

the round through hole is formed in the pressing cover, the ball body is pressed on the side face of the rotating rod, and the sealing mechanism is arranged above the anti-friction mechanism and arranged on the pressing cover.

Furthermore, coupling mechanism includes ring flange and connecting wire, all be equipped with the ring flange on the inlet outlet of casing, array distribution has four connecting wires on the ring flange, and the ring flange can be connected outside delivery pipe through four connecting wires.

Furthermore, stop gear includes stopper and spacing recess, spacing recess has been seted up to the inside bottom side of casing, the inside bottom side of valve body is equipped with the stopper, the stopper corresponds with spacing recess and cup joints, and stopper and spacing recess can carry on spacingly to casing and valve body, avoid the valve body to carry out the displacement in the casing is inside, convenient to use.

Furthermore, the bottom side of the inside of the limiting groove is provided with a traction spring, the top end of the traction spring is fixedly arranged at the bottom end of the limiting block, the traction spring pulls the limiting block to perform traction in the limiting groove, the limiting block is prevented from being separated from the limiting groove, and the use is not influenced.

Further, sealing mechanism includes shell, spring, sealed pad and sealed bearing, the upper surface of gland passes through fixed silk fixedly connected with shell, the inside from the top down of shell is equipped with spring, sealed pad and sealed bearing in proper order, the rotary rod runs through on the shell, spring, sealed pad and sealed bearing all cup joint in the side of rotary rod, and the elasticity of spring self promotes sealed pad and seals at rotary rod and shell, avoids taking place to leak, and sealed bearing supports sealed pad simultaneously, prevents to cause the damage.

Compared with the prior art, the beneficial effects of the utility model are that: carry and draw the piece and mention the rotary rod, and it is rotatory to drive the rotary rod through the bull stick, make the valve body at the inside back and rotatory that rises of casing, be convenient for this promotion formula plug valve carries out work, rise when the rotary rod with rotatory, make the rotary rod rotate between four spheroids, and then promote four spheroids and roll respectively inside four ball-type recesses, frictional force between rotary rod and the closing cap has been reduced, prevent to cause the rotary rod to rub and decrease seriously, avoid appearing leaking between rotary rod and the closing cap, do not influence the life of this plug valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the structure of the present invention;

fig. 3 is an enlarged schematic view of the structure at a position a of the present invention.

In the figure: the device comprises a plug valve mechanism 1, a shell 11, a valve body 12, a gland 13, a rotating rod 14, a lifting block 15, an anti-friction mechanism 2, a circular through hole 21, a ball 22, a spherical groove 23, a connecting mechanism 3, a flange 31, a connecting wire 32, a limiting mechanism 4, a limiting block 41, a limiting groove 42, a pulling spring 5, a rotating rod 6, a sealing mechanism 7, a shell 71, a spring 72, a sealing gasket 73 and a sealing bearing 74.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a low resistance and low loss lift plug valve, which comprises a plug valve mechanism 1 and an anti-friction mechanism 2.

The plug valve mechanism 1 comprises a shell 11, connecting mechanisms 3 are arranged on water inlets and water outlets of the shell 11, each connecting mechanism 3 comprises a flange 31 and connecting wires 32, the water inlets and the water outlets of the shell 11 are respectively provided with the flange 31, four connecting wires 32 are distributed on the flange 31 in an array manner, the flange 31 can be connected with an external conveying water pipe through the four connecting wires 32, the upper surface of the shell 11 is provided with a gland 13 through mounting wires, a valve body 12 is sleeved inside the shell 11, a limiting mechanism 4 is arranged between the bottom side of the valve body 12 and the bottom side of the inside of the shell 11, the limiting mechanism 4 comprises a limiting block 41 and a limiting groove 42, the bottom side of the inside of the shell 11 is provided with the limiting groove 42, the limiting block 41 is correspondingly sleeved with the limiting groove 42, the limiting block 41 and the limiting groove 42 can limit the shell 11 and the valve body 12, and the displacement of the valve body, convenient to use, the inside bottom side of spacing recess 42 is equipped with tractive spring 5, the fixed bottom of establishing at stopper 41 in top of tractive spring 5, tractive spring 5 stimulates stopper 41 and carries out the tractive in spacing recess 42 is inside, prevent stopper 41 and spacing recess 42 from taking place to break away from, do not influence the use, the upper surface of valve body 12 is equipped with rotary rod 14, the side of rotary rod 14 is equipped with bull stick 6, the top of rotary rod 14 runs through gland 13 through antifriction mechanism 2, the top of rotary rod 14 is equipped with lifting block 15, lifting block 15 is fixed to be established in the upper surface of gland 13, lifting block 15 lifts rotary rod 14, and it rotates to drive rotary rod 14 through bull stick 6, make valve body 12 rise the back and rotate inside casing 11, be convenient for this lifting plug valve to work.

The anti-friction mechanism 2 comprises a circular through hole 21, four spherical grooves 23 are distributed on the inner side surface of the circular through hole 21 in an array mode, spheres 22 are connected to the inner parts of the four spherical grooves 23 in a rolling mode, when the rotating rod 14 rises and rotates, the rotating rod 14 rotates among the four spheres 22, and then the four spheres 22 are pushed to roll in the four spherical grooves 23 respectively, so that the friction force between the rotating rod 14 and the sealing cover 13 is reduced, the rotating rod 14 is prevented from being seriously abraded, leakage between the rotating rod 14 and the sealing cover 13 is avoided, and the service life of the plug valve is not influenced; wherein, circular through-hole 21 is seted up on gland 13, spheroid 22 presses the side at rotary rod 14, be located antifriction mechanism 2's top and be equipped with sealing mechanism 7 on gland 13, sealing mechanism 7 includes shell 71, spring 72, sealed pad 73 and sealed bearing 74, the upper surface of gland 13 is through fixed filament fixedly connected with shell 71, the inside from the top down of shell 71 is equipped with spring 72 in proper order, sealed pad 73 and sealed bearing 74, rotary rod 14 runs through on shell 71, spring 72, sealed pad 73 and sealed bearing 74 all cup joint the side at rotary rod 14, the elasticity of spring 72 self, it seals at rotary rod 14 and shell 71 to promote sealed pad 73, avoid taking place the leakage, sealed bearing 74 supports sealed pad 73 simultaneously, prevent to cause the damage.

The utility model discloses when using: lifting the rotating rod 14 through the lifting block 15, and driving the rotating rod 14 to rotate through the rotating rod 6, so that the valve body 12 is lifted and rotated inside the shell 11, which is convenient for the lifting type plug valve to work, when the rotating rod 14 is lifted and rotated, the rotating rod 14 is rotated between four spheres 22, and then four spheres 22 are pushed to roll inside four spherical grooves 23 respectively, the friction force between the rotating rod 14 and the sealing cover 13 is reduced, the rotating rod 14 is prevented from being abraded seriously, the leakage between the rotating rod 14 and the sealing cover 13 is avoided, and the service life of the plug valve is not influenced.

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 low resistance low loss lift plug valve which characterized in that: comprises a plug valve mechanism (1) and an anti-friction mechanism (2);

the plug valve mechanism (1) comprises a shell (11), connecting mechanisms (3) are arranged on water inlets and water outlets of the shell (11), a gland (13) is installed on the upper surface of the shell (11) through an installation wire, a valve body (12) is sleeved inside the shell (11), a limiting mechanism (4) is arranged between the bottom side of the valve body (12) and the bottom side of the inside of the shell (11), a rotating rod (14) is arranged on the upper surface of the valve body (12), a rotating rod (6) is arranged on the side surface of the rotating rod (14), the top end of the rotating rod (14) penetrates through the gland (13) through an anti-friction mechanism (2), a lifting block (15) is arranged at the top end of the rotating rod (14), and the lifting block (15) is fixedly arranged on the upper surface of the gland (13);

the anti-friction mechanism (2) comprises a circular through hole (21), four spherical grooves (23) are distributed on the inner side surface of the circular through hole (21) in an array mode, and spheres (22) are connected to the inner parts of the four spherical grooves (23) in a rolling mode;

the round through hole (21) is formed in the pressing cover (13), the ball body (22) is pressed on the side face of the rotating rod (14), and the sealing mechanism (7) located above the anti-friction mechanism (2) is arranged on the pressing cover (13).

2. The low resistance low loss poppet cock valve according to claim 1, wherein: the connecting mechanism (3) comprises a flange plate (31) and connecting wires (32), the flange plate (31) is arranged on the water inlet and the water outlet of the shell (11), and the four connecting wires (32) are distributed on the flange plate (31) in an array mode.

3. The low resistance low loss poppet cock valve according to claim 1, wherein: the limiting mechanism (4) comprises a limiting block (41) and a limiting groove (42), the limiting groove (42) is formed in the bottom side of the inside of the shell (11), the limiting block (41) is arranged on the bottom side of the inside of the valve body (12), and the limiting block (41) is correspondingly sleeved with the limiting groove (42).

4. A low resistance low loss poppet cock valve according to claim 3, wherein: and a traction spring (5) is arranged at the bottom side of the inner part of the limiting groove (42), and the top end of the traction spring (5) is fixedly arranged at the bottom end of the limiting block (41).

5. The low resistance low loss poppet cock valve according to claim 1, wherein: sealing mechanism (7) include shell (71), spring (72), sealed pad (73) and sealed bearing (74), shell (71) are through fixed filament fixed connection to the upper surface of gland (13), spring (72), sealed pad (73) and sealed bearing (74) from the top down set gradually the inside of shell (71), rotary rod (14) run through shell (71), spring (72), sealed pad (73) and sealed bearing (74) all cup joint the side of rotary rod (14).