CN213685528U

CN213685528U - U-shaped filler for valve

Info

Publication number: CN213685528U
Application number: CN202022844906.5U
Authority: CN
Inventors: 何振瑜; 陈彦孚; 陈秋湖
Original assignee: Jiangsu Renyu Petroleum Equipment Co ltd
Current assignee: Jiangsu Renyu Petroleum Equipment Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-13
Anticipated expiration: 2030-12-02

Abstract

The invention discloses a U-shaped filler for a valve, and relates to the technical field of U-shaped fillers for valves. This U type is packed for valve, includes the valve gap, valve rod has been cup jointed to valve gap internal surface activity, be equipped with down leak protection pad device in the valve gap, leak protection pad device includes lower packing cover down, the surface activity of lower packing cover cup joints in the valve gap, four special-shaped dead slots have been seted up above the outward flange of lower packing cover, seal groove one has been seted up to the higher authority of lower packing cover, run through above the middle part of lower packing cover and seted up valve rod cover one, this a U type is packed for valve, passes valve rod cover two and is fixed through the valve rod, and valve rod cover two is toward outer inflation, and valve rod cover two is inwards extruded by locking cover, and valve rod cover two and valve rod block completely block carry out inwards extrusion through using the locking cover to be favorable to valve rod cover two inseparabler with the valve rod block, greatly increased the stability of device.

Description

U-shaped filler for valve

Technical Field

The invention relates to the technical field of U-shaped packing for valves, in particular to a U-shaped packing for a valve.

Background

The valve packing is made of a composite material and is mainly used for sealing an annular space between the valve rod and the sealing cover, so that the sealing shape of the valve rod is kept when the valve rod rotates and reciprocates, and the valve packing can reduce a gap between the valve rod and the valve cover.

When a valve rod in the existing valve rotates and reciprocates for a long time, air leakage can be generated in an annular space between a sealing valve rod and a sealing cover, so that the pressure inside the valve is leaked, and even the valve is cracked.

Disclosure of Invention

The invention aims to provide a U-shaped filler for a valve, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a U type is packed for valve, includes the valve gap, valve rod has been cup jointed in the activity of valve gap internal surface, be equipped with down leak protection and fill up the device in the valve gap, leak protection fills up the device down and includes the lower cover of packing, the surface activity of lower cover of packing cup joints in the valve gap, four special-shaped dead slots have been seted up above the outward flange of lower cover of packing, seal groove one has been seted up to the higher authority of lower cover of packing, run through above the middle part of lower cover of packing and seted up valve rod cover one, valve rod has been cup jointed in the internal surface activity of valve rod cover one, be equipped with deformable filler device in the valve gap, be equipped.

Preferably, the deformable filler device includes that the U-shaped packs, the higher authority that the U-shaped packed runs through and has seted up the U-shaped silo, protruding material ring has been seted up below the U-shaped packs, two V-arrangement deformation grooves have been seted up below the U-shaped packs, the higher authority fixedly connected with epirelief piece of U-shaped packs, seal groove two has been seted up on the upper portion that the U-shaped packed, the surface activity of protruding material ring cup joints in seal groove one, and the surface activity of U-shaped packs cup joints in the valve gap, the internal surface activity in U-shaped silo has cup jointed the valve rod.

Preferably, go up the seal cover device and include the packing cover, go up the higher authority fixedly connected with lock sleeve of packing cover, the internal surface fixed of lock sleeve has cup jointed valve rod cover two, go up the lower trough of having seted up of packing cover, go up fixedly connected with lower blanking ring below the packing cover, the internal surface activity of valve rod cover two has cup jointed the valve rod, the internal surface activity of lower trough has cup jointed upper blanking piece, the surface activity of lower blanking ring cup joints in seal groove two.

Compared with the prior art, the invention has the beneficial effects that:

(1) this U type filler for valve, valve rod when long-time rotation and reciprocating motion in current valve, annular space between sealed valve rod and the sealed lid can produce gas leakage, leads to the inside pressure of valve to leak, leads to the valve to break even, and the U-shaped filler in this device adopts rubber and polytetrafluoroethylene combined material, when maintaining high elasticity, reduces valve rod V-arrangement shape deformation groove moving resistance, and the medium is to the ageing influence of rubber in the isolation valve, extension U-shaped filler life.

(2) This U type is packed for valve passes valve rod cover two through the valve rod and is fixed, and valve rod cover two is toward outer inflation, and valve rod cover two is inwards extruded by the lock sleeve, and valve rod cover two and the complete block of valve rod carry out inwards extrusion through using the lock sleeve to be favorable to valve rod cover two inseparabler with the valve rod block, greatly increased the stability of device.

Drawings

FIG. 1 is a schematic structural view of a valve closure according to the present invention;

FIG. 2 is a schematic view of a U-shaped packing of the present invention;

FIG. 3 is a schematic view of an upper packing sleeve of the present invention;

FIG. 4 is a schematic view of the under fill sleeve of the present invention.

In the figure: the valve comprises a valve cover 1, a valve rod 11, a lower packing sleeve 2, a special-shaped empty groove 21, a first sealing groove 22, a first valve rod sleeve 23, a 3U-shaped packing, a 31U-shaped trough, a 32 convex material ring, a 33V-shaped deformation groove, a 34 convex material block, a second sealing groove 35, an upper packing sleeve 4, a 41 locking sleeve, a second valve rod sleeve 42, a 43 lower feeding groove and a 44 lower convex material ring.

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. 1-4, the present invention provides a technical solution: the utility model provides a U type is packed for valve, including valve gap 1, valve rod 11 has been cup jointed to the internal surface activity of valve gap 1, be equipped with down leak protection pad device in the valve gap 1, lower leak protection pad device includes lower packing cover 2, the surface activity of lower packing cover 2 cup joints in valve gap 1, four dysmorphism dead slots 21 have been seted up above the outward flange of lower packing cover 2, seal groove one 22 has been seted up to the higher authority of

lower packing cover

2, 2 rotatory putting into valve gap 1 with lower packing cover, because lower packing cover 2 receives the extrusion, lower packing cover 2 compresses four dysmorphism dead slots 21, four dysmorphism dead slots 21 are inwards warp, after packing cover 2 is fixed down, valve rod cover one 23 has been seted up to running through above the middle part of lower packing cover 2, valve rod cover one 23's internal surface activity has cup jointed valve rod 11, be equipped with deformable filler device in the valve gap 1, be equipped with upper seal cover.

The deformable packing device comprises a U-shaped packing 3, a U-shaped trough 31 is formed in the upper surface of the U-shaped packing 3 in a penetrating mode, a protruding material ring 32 is formed below the U-shaped packing 3, two V-shaped deformation grooves 33 are formed below the U-shaped packing 3, an upper protruding material block 34 is fixedly connected to the upper surface of the U-shaped packing 3, a second sealing groove 35 is formed in the upper portion of the U-shaped packing 3, the outer surface of the protruding material ring 32 is movably sleeved in a first sealing groove 22, the U-shaped packing 3 rotates into a valve cover 1, the protruding material ring 32 below the U-shaped packing 3 is inserted into the first sealing groove 22, the U-shaped packing 3 is extruded, the U-shaped trough 31 is extruded inwards by the U-shaped packing 3, the front end of the U-shaped trough 31 is in extrusion contact with the upper packing sleeve 4 from bottom to top, the outer surface of the U-shaped packing 3 is movably sleeved in the valve cover 1, and the.

The upper sealing sleeve device comprises an upper packing sleeve 4, a locking sleeve 41 is fixedly connected to the upper surface of the upper packing sleeve 4, a valve rod sleeve II 42 is fixedly sleeved on the inner surface of the locking sleeve 41, a lower feeding groove 43 is formed in the lower surface of the upper packing sleeve 4, the U-shaped trough 31 is self-closed under pressure, the lower packing ring 44 is inserted into the second sealing groove 35, the upper packing block 34 just enters the lower feeding groove 43 after the lower packing ring 44 completely enters the second sealing groove 35, the upper packing sleeve 4 and the U-shaped packing 3 are completely clamped at the moment, the valve rod 11 is rotated, the U-shaped packing 3 is driven to rotate by the rotation of the valve rod 11, the V-shaped deformation groove 33 is deformed by the rotation of the U-shaped packing 3, the displacement of the U-shaped packing 3 is reduced by the deformation of the V-shaped deformation groove 33, the lower packing ring 44 is fixedly connected to the lower surface of the upper packing sleeve 4, the valve rod 11 is movably sleeved on the inner surface of the valve rod sleeve, the outer surface of the lower material-pushing ring 44 is movably sleeved in the second sealing groove 35.

The working principle is as follows:

the first step is as follows: the lower packing sleeve 2 is rotatably placed in the valve cover 1, the lower packing sleeve 2 compresses the four special-shaped hollow grooves 21 due to the extrusion of the lower packing sleeve 2, the four special-shaped hollow grooves 21 deform inwards, and after the lower packing sleeve 2 is fixed, the U-shaped packing 3 is rotated into the valve cover 1, the convex ring 32 below the U-shaped packing 3 is inserted into the first sealing groove 22, the U-shaped packing 3 is extruded, the U-shaped trough 31 is extruded inwards by the U-shaped packing 3, the front end of the U-shaped trough 31 is extruded and contacted, the upper packing sleeve 4 is sleeved into the valve rod 11 from bottom to top, the valve rod 11 passes through the second valve rod sleeve 42 and is fixed, the second valve rod sleeve 42 expands outwards, the second valve rod sleeve 42 is extruded inwards by the locking sleeve 41, the second valve rod sleeve 42 is completely clamped with the valve rod 11, the locking sleeve 41 is extruded inwards by the locking sleeve 41, therefore, the second valve rod sleeve 42 is tightly clamped with the valve rod 11, and the stability of the device is greatly improved.

The second step is that: the valve rod 11 penetrates through the U-shaped trough 31 and the valve rod sleeve I23, the U-shaped trough 31 is expanded outwards by the valve rod 11, the U-shaped trough 31 is pressed to be closed by self, the lower blanking ring 44 is inserted into the second sealing groove 35, the upper blanking block 34 just enters the lower feeding groove 43 after the lower blanking ring 44 completely enters the second sealing groove 35, at the moment, the upper padding sleeve 4 is completely clamped with the U-shaped padding 3, the valve rod 11 is rotated, the U-shaped padding 3 is driven to rotate by the rotation of the valve rod 11, the V-shaped padding 33 is deformed by the rotation of the U-shaped padding 3, the deformation of the V-shaped padding 33 reduces the self displacement of the U-shaped padding 3, the U-shaped padding 3 is used for an annular space between the valve rod 11 and the valve cover 1, so that the U-shaped padding 3 can still provide enough sealing capacity for the valve cover 1 when the valve rod 11 is operated in rotating and reciprocating motion, the internal pressure of the valve rod is prevented from leaking outwards, and when, annular space between sealed valve rod and sealed lid probably produces gas leakage, leads to the inside pressure of valve to leak, leads to the valve to break even, and U-shaped filler 3 in this device adopts rubber and polytetrafluoroethylene combined material, maintains high elasticity in the time, reduces valve rod V-arrangement deformation groove 33 moving resistance, and the medium is to the ageing influence of rubber in the isolation valve door, extension U-shaped filler 3 life.

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. The utility model provides a U type is packed for valve, includes valve gap (1), valve rod (11) have been cup jointed in valve gap (1) internal surface activity, be equipped with down leak protection and fill up the device in valve gap (1), its characterized in that: the lower anti-leakage gasket device comprises a lower packing sleeve (2), the outer surface of the lower packing sleeve (2) is movably sleeved in the valve cover (1), four special-shaped empty grooves (21) are formed in the outer edge of the lower packing sleeve (2), a first sealing groove (22) is formed in the lower packing sleeve (2), a first valve rod sleeve (23) penetrates through the middle of the lower packing sleeve (2), and a valve rod (11) is movably sleeved on the inner surface of the first valve rod sleeve (23);

a deformable filling device is arranged in the valve cover (1);

an upper sealing sleeve device is arranged in the valve cover (1).

2. The valve U-shaped packing according to claim 1, wherein: the deformable packing device comprises a U-shaped packing (3), a U-shaped trough (31) is formed in the upper surface of the U-shaped packing (3) in a penetrating mode, a convex material ring (32) is formed in the lower surface of the U-shaped packing (3), and two V-shaped deformation grooves (33) are formed in the lower surface of the U-shaped packing (3).

3. The U-shaped packing for the valve according to claim 2, wherein: an upper convex block (34) is fixedly connected to the upper portion of the U-shaped filler (3), and a second sealing groove (35) is formed in the upper portion of the U-shaped filler (3).

4. The U-shaped packing for the valve according to claim 3, wherein: the outer surface activity of protruding material ring (32) cup joints in seal groove (22), and the outer surface activity of U-shaped packing (3) cup joints in valve gap (1), the internal surface activity of U-shaped silo (31) has cup jointed valve rod (11).

5. The valve U-shaped packing according to claim 1, wherein: the upper sealing sleeve device comprises an upper packing sleeve (4), a locking sleeve (41) is fixedly connected to the upper surface of the upper packing sleeve (4), a valve rod sleeve II (42) is fixedly sleeved on the inner surface of the locking sleeve (41), a lower feeding groove (43) is formed in the lower surface of the upper packing sleeve (4), and a lower blanking ring (44) is fixedly connected to the lower surface of the upper packing sleeve (4).

6. The U-shaped packing for the valve according to claim 5, wherein: the valve rod (11) is sleeved on the inner surface of the second valve rod sleeve (42) in a movable mode, the upper convex block (34) is sleeved on the inner surface of the lower feeding groove (43) in a movable mode, and the outer surface of the lower convex ring (44) is sleeved in the second sealing groove (35) in a movable mode.