CN205745453U - A kind of three communicating valves of band leakproof compensator - Google Patents

Abstract

nullThe utility model discloses three communicating valves of a kind of band leakproof compensator，Including valve body and core assembly，Valve body includes pedestal、Upper end cover and bottom end cover，Convex platform it is provided with in the middle part of upper end cover，Convex platform center offers installing hole，Lower convex platform it is provided with in the middle part of bottom end cover，Lower convex platform center offers lower installing hole，Core assembly includes mandrel and the kyphosis plate being connected on mandrel with strut，The upper end of mandrel is arranged in installing hole，And it is provided with an O RunddichtringO between mandrel upper end outer wall and upper installing hole inwall，The lower end of mandrel is arranged in lower installing hole，And it is provided with an O RunddichtringO between mandrel lower end outer wall and lower installing hole inwall，Lower convex platform end face offers one for placing the annular groove of the 2nd O RunddichtringO，The outer circumference surface of lower convex platform is provided with external screw thread，And the tapped lower sealing cover that is spirally connected，Lower sealing cover presses the 2nd O RunddichtringO.This utility model good leak-proof effect, reliability is high.

Description

A kind of three communicating valves of band leakproof compensator

Technical field

This utility model relates generally to three communicating valve fields, particularly relates to three communicating valves of drip-preventing function.

Background technology

Three-way valve is divided into converging valve and flow divider by fluid matasomatism mode, and converging valve has two entrances, from one behind interflow Outlet is flowed out, and flow divider has a fluid intake, is flowed out by two fluid issuings after shunting.Three-way valve is typically by valve body and valve Core is constituted, and the sealing property of valve body is extremely important for the reliability of whole three-way valve.

The Chinese patent of Application No. 201520658188.9 discloses a kind of three communicating valves, its valve body by base with upper Lower cover is constituted, and its core assembly is made up of mandrel and the kyphosis plate that is connected on mandrel with strut, and the two ends up and down of mandrel are respectively It is arranged in the installing hole of upper and lower covers, O RunddichtringO is set between mandrel lateral wall and installing hole inwall and seals.Using During, it is easy to abrasion owing to mandrel rotation frequently results in O RunddichtringO, after the abrasion of O RunddichtringO, arises that seepage is asked Topic, has a strong impact on the reliability of product.

Utility model content

The technical problems to be solved in the utility model is: the deficiency existed for prior art, it is provided that a kind of antiseep Three communicating valves of the band leakproof compensator that effective, reliability is high.

For solve above-mentioned technical problem, this utility model by the following technical solutions:

A kind of three communicating valves of band leakproof compensator, including valve body and core assembly, described valve body include pedestal and Being connected to upper end cover and the bottom end cover at pedestal two ends, described pedestal sidewall is respectively equipped with inlet opening, the first liquid outlet and second and goes out Fluid apertures, is provided with convex platform in the middle part of described upper end cover, convex platform center offers installing hole, is provided with down convex in the middle part of described bottom end cover Platform, lower convex platform center offers lower installing hole, and described core assembly includes mandrel and the kyphosis plate being connected on mandrel with strut, The upper end of described mandrel is arranged in installing hole, and it is close to be provided with an O type between mandrel upper end outer wall and upper installing hole inwall Seal, the lower end of described mandrel is arranged in lower installing hole, and is provided with an O between mandrel lower end outer wall and lower installing hole inwall RunddichtringO, described lower convex platform end face offers one for placing the annular groove of the 2nd O RunddichtringO, outside described lower convex platform Periphery is provided with external screw thread, and the tapped lower sealing cover that is spirally connected, and described lower sealing cover presses the 2nd O RunddichtringO.

Further improvement as technique scheme:

Described convex platform end face center offers one for placing the central recess of lip-type packing/U-shaped sealing ring, described The degree of depth of central recess is more than the thickness of lip-type packing/U-shaped sealing ring, and the outer circumference surface of described convex platform is provided with external screw thread, And the tapped top cover labyrinth that is spirally connected, it is additionally provided with an annular between described top cover labyrinth and lip-type packing/U-shaped sealing ring Jacking block, described lip-type packing/U-shaped sealing ring and annular jacking block are all placed on mandrel, and the center of described top cover labyrinth offers Through hole, for being connected with external driver device for mandrel.

Described annular jacking block is presented under width narrow stepped, and its upper wide part divides and is positioned over convex platform end face, and withstands close The inner bottom surface of capping, its lower narrow portion is positioned in central recess, and withstands the back side of lip-type packing/U-shaped sealing ring.

Described annular jacking block is made up of polytetrafluoroethylmaterial material.

The outer peripheral face of described lower sealing cover is provided with the decorative pattern being easy to manually regulate.

The outer peripheral face of described top cover labyrinth is provided with multiple grooves of just hook-shaped spanner operation.

The sectional area of described inlet opening, the first liquid outlet and the second liquid outlet is equal, the centrage of described inlet opening and The central axis of one liquid outlet, with the centrage of the second liquid outlet on the same line.

Compared with prior art, the utility model has the advantage of:

1, this utility model installs the 2nd O RunddichtringO additional at lower convex platform end face, and screws realization sealing by lower sealing cover, As secondary seal, owing to the 2nd O RunddichtringO is placed in the annular groove of lower convex platform end face, directly do not connect with mandrel outer wall Touch, so will not wear and tear, therefore, even if in use descending an O RunddichtringO of installing hole inwall because mandrel rotates After abrasion, still can realize sealing by the 2nd O RunddichtringO, prevent seepage.

2, this utility model is offered circular groove at convex platform end face and is placed the lip packing with mandrel upper end wall contacts Circle or U-shaped sealing ring, realize adjustable second compensation by the pressuring action of top cover labyrinth and annular jacking block and seal, and is using If an O RunddichtringO abrasion in upper installing hole during, can screw top cover labyrinth compressing annular jacking block, make annular jacking block pressure Tight lip-type packing or U-shaped sealing ring, so that lip-type packing or the inside and outside expansion of U-shaped sealing ring are close to mandrel, to reach weight Novel sealing, prevents seepage.

Accompanying drawing explanation

Fig. 1 is that master of the present utility model regards sectional structure schematic diagram.

Fig. 2 is the plan structure schematic diagram that this utility model removes upper end cover.

In figure, each label is expressed as: 1, pedestal；11, inlet opening；12, the first liquid outlet；13, the second liquid outlet；2, upper end Lid；21, convex platform；22, upper installing hole；23, central recess；24, U-shaped sealing ring；25, top cover labyrinth；26, annular jacking block；27、 Through hole；3, bottom end cover；31, lower convex platform；32, lower installing hole；33, annular groove；34, the 2nd O RunddichtringO；35, lower sealing cover； 4, mandrel；5, strut；6, kyphosis plate；7, King pad；8, an O RunddichtringO；9, nut.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail, it is noted that this practicality Novel protection domain is not limited merely to following embodiment, on the premise of without departing from this utility model principle, to this practicality Novel done any improvements and modifications, are regarded as protection domain of the present utility model.

As it is shown in figure 1, three communicating valves of band leakproof compensator of the present utility model, including valve body and core assembly, valve Body includes pedestal 1 and the upper end cover 2 being connected to pedestal 1 two ends and bottom end cover 3.See Fig. 2, pedestal 1 sidewall be respectively equipped with into Fluid apertures the 11, first liquid outlet 12 and the second liquid outlet 13, inlet opening the 11, first liquid outlet 12 and the sectional area of the second liquid outlet 13 Equal, the centrage of inlet opening 11 and the central axis of the first liquid outlet 12, with the centrage of the second liquid outlet 13 same On straight line.Core assembly includes mandrel 4 and the kyphosis plate 6 being connected on mandrel 4 with strut 5.See Fig. 1, set in the middle part of upper end cover 2 Having convex platform 21, convex platform 21 center to offer installing hole 22, the upper end of mandrel 4 is arranged in installing hole 22, and mandrel 4 King pad 7 and an O RunddichtringO 8 it is provided with between upper end outer wall and upper installing hole 22 inwall；It is provided with down in the middle part of bottom end cover 3 Boss 31, lower convex platform 31 center offers lower installing hole 32, and the lower end of mandrel 4 is arranged in lower installing hole 32, and mandrel 4 lower end It is provided with King pad 7 and an O RunddichtringO 8 between outer wall and lower installing hole 32 inwall.Wherein, 7 axles of King pad Making use, an O RunddichtringO plays first order sealing function.Lower convex platform 31 end face offers one and seals for placing the 2nd O type The annular groove 33 of circle 34, the outer circumference surface of lower convex platform 31 is provided with external screw thread, and the tapped lower sealing cover 35 that is spirally connected, under Sealing lid 35 presses the 2nd O RunddichtringO 34 and realizes secondary seal.Owing to the 2nd O RunddichtringO 34 is placed on lower convex platform 31 end face Annular groove 33 in, directly do not contact with mandrel 4 outer wall, so will not wear and tear, therefore, even if making because mandrel 4 rotates During with after O RunddichtringO 8 abrasion of lower installing hole 32 inwall, still can be realized by the 2nd O RunddichtringO 34 Seal, prevent seepage.

In the present embodiment, convex platform 21 end face center offers one for placing in lip-type packing/U-shaped sealing ring 24 Heart groove 23, the present embodiment is as a example by U-shaped sealing ring 24, and the U-shaped mouth down of U-shaped sealing ring 24 is placed, central recess 23 deep Degree is more than the thickness of U-shaped sealing ring 24.The outer circumference surface of convex platform 21 is provided with external screw thread, and the tapped upper sealing that is spirally connected Lid 25, is additionally provided with an annular jacking block 26 being made up of politef, U-shaped sealing between top cover labyrinth 25 and U-shaped sealing ring 24 Circle 24 and annular jacking block 26 are all placed on mandrel 4.Wherein, annular jacking block 26 is in wide at the top and narrow at the bottom stepped, and its upper wide part divides to be put Being placed in convex platform 21 end face, and withstand the inner bottom surface of top cover labyrinth 25, its lower narrow portion is positioned in central recess 23, and withstands The back side of U-shaped sealing ring 24.The center of top cover labyrinth 25 offers through hole 27, for being connected with external driver device for mandrel 4. Mandrel 4 is determined on a case-by-case basis through the length of top cover labyrinth 25 through hole 27, and to coordinate external driver device, mandrel 4 is with outside The connected mode of driving means is depending on driving means connecting rod, and according to connected mode, mandrel 4 upper end end face can open U-type groove hole (seeing Fig. 2) or Sifangtai.If the O RunddichtringO 8 in upper installing hole 22 weares and teares during Shi Yonging, top cover labyrinth can be screwed 25 compressing annular jacking blocks 26, make annular jacking block 26 compress U-shaped sealing ring, so that mandrel 4 is close in the inside and outside expansion of U-shaped sealing ring, To reach to reseal, prevent seepage.

In the present embodiment, the outer peripheral face annular knurl stricture of vagina of lower sealing cover 35, it is simple to manually regulate, when kyphosis plate 6 abrasion causes close When sealing property declines, can unload lower sealing cover 35, the nut 9 on regulation wedge, to reach to reseal, revolves after having regulated again It is tight that lower sealing cover 35 can (the concrete adjustment structure of kyphosis plate 6 and principle see the special of Application No. 201420007619.0 Profit).The outer peripheral face of top cover labyrinth 25 offers 8 grooves, it is simple to hook-shaped spanner operation regulation (all omit in figure and do not show).

Claims (7)

1. three communicating valves of band leakproof compensator, including valve body and core assembly, described valve body includes pedestal and company Being connected to upper end cover and the bottom end cover at pedestal two ends, described pedestal sidewall is respectively equipped with inlet opening, the first liquid outlet and second and goes out liquid Hole, is provided with convex platform in the middle part of described upper end cover, convex platform center offers installing hole, is provided with down convex in the middle part of described bottom end cover Platform, lower convex platform center offers lower installing hole, and described core assembly includes mandrel and the kyphosis plate being connected on mandrel with strut, The upper end of described mandrel is arranged in installing hole, and it is close to be provided with an O type between mandrel upper end outer wall and upper installing hole inwall Seal, the lower end of described mandrel is arranged in lower installing hole, and is provided with an O between mandrel lower end outer wall and lower installing hole inwall RunddichtringO, it is characterised in that: described lower convex platform end face offers one for placing the annular groove of the 2nd O RunddichtringO, institute The outer circumference surface stating lower convex platform is provided with external screw thread, and the tapped lower sealing cover that is spirally connected, and described lower sealing cover presses the 2nd O RunddichtringO.

Three communicating valves of band leakproof compensator the most according to claim 1, it is characterised in that: in described convex platform end face The heart offers one for placing the central recess of lip-type packing/U-shaped sealing ring, and the degree of depth of described central recess is close more than lip The thickness of seal/U-shaped sealing ring, the outer circumference surface of described convex platform is provided with external screw thread, and the tapped upper sealing that is spirally connected Lid, is additionally provided with an annular jacking block, described lip-type packing/U-shaped between described top cover labyrinth and lip-type packing/U-shaped sealing ring Sealing ring and annular jacking block are all placed on mandrel, and the center of described top cover labyrinth offers through hole, for driving with outside for mandrel Dynamic device connects.

Three communicating valves of band leakproof compensator the most according to claim 2, it is characterised in that: described annular jacking block is presented Under width narrow stepped, its upper wide part divides and is positioned over convex platform end face, and withstands the inner bottom surface of top cover labyrinth, and its lower narrow portion is put It is placed in central recess, and withstands the back side of lip-type packing/U-shaped sealing ring.

Three communicating valves of band leakproof compensator the most according to claim 3, it is characterised in that: described annular jacking block is by gathering Tetrafluoroethene material is made.

5. according to three communicating valves of the band leakproof compensator described in claim 1 or 2 or 3 or 4, it is characterised in that: under described The outer peripheral face sealing lid is provided with the decorative pattern being easy to manually regulate.

6. according to three communicating valves of the band leakproof compensator described in Claims 2 or 3 or 4, it is characterised in that: described upper sealing The outer peripheral face of lid is provided with multiple grooves of just hook-shaped spanner operation.

7. according to three communicating valves of the band leakproof compensator described in claim 1 or 2 or 3 or 4, it is characterised in that enter described in: The sectional area of fluid apertures, the first liquid outlet and the second liquid outlet is equal, the centrage of described inlet opening and the center of the first liquid outlet Line is vertical, with the centrage of the second liquid outlet on the same line.