CN201627964U - Plunger sealing ring structure of plunger valve - Google Patents

Plunger sealing ring structure of plunger valve Download PDF

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Publication number
CN201627964U
CN201627964U CN2009201938659U CN200920193865U CN201627964U CN 201627964 U CN201627964 U CN 201627964U CN 2009201938659 U CN2009201938659 U CN 2009201938659U CN 200920193865 U CN200920193865 U CN 200920193865U CN 201627964 U CN201627964 U CN 201627964U
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CN
China
Prior art keywords
plunger
ring
valve
cylinder
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009201938659U
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Chinese (zh)
Inventor
黄虹宾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Liansu Technology Industrial Co Ltd
Original Assignee
Guangdong Liansu Technology Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Liansu Technology Industrial Co Ltd filed Critical Guangdong Liansu Technology Industrial Co Ltd
Priority to CN2009201938659U priority Critical patent/CN201627964U/en
Application granted granted Critical
Publication of CN201627964U publication Critical patent/CN201627964U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a plunger sealing ring structure of a plunger valve. A main body of the plunger sealing ring (3) is a cylinder ring (33). One end of the cylinder ring (33) is a positioning end, while the other end thereof is a sealing surface (32). The positioning end is a raised ring (31). The inner diameter of the raised ring (31) is the same with that of the cylinder ring (33). The outer diameter of the raised ring (31) is greater than that of the cylinder ring (33). The axial length of the raised ring (31) is less than that of the cylinder ring (33). The profile of the sealing surface (32) is a curved surface which can be matched with the cylindrical surface of a plunger to form the sealing surface.

Description

A kind of plunger seal coil structures of plunger valve
Technical field
The utility model relates to gas pipeline cut-off valve field, particularly a kind of plunger seal coil structures of plunger valve.
Background technique
On the valve mechanism of sweat soldering, generally adopt the one-piece side assembling structure at present, promptly spheroid, valve rod, a side sealing circle are packed into from valve body one end, and the diameter of this end is more than or equal to the diameter of plunger compartment; Another seal ring is contained on the stub (tube), and valve body and stub (tube) rely on pack into the larger-diameter inner cylindrical surface of spheroid one side and the external cylindrical surface hot melt or the electric fusion welding of stub (tube) of valve body to be connected into integral ball valve.During assembling, earlier with a seal ring and support ring thereof by pack into seal ring and support annular groove of the bigger end of valve diameter, from the bigger end of the valve diameter valve rod of packing into, make the button bit mouth on the valve rod go in the button bit of valve thimble the valve ball of packing into then more then; Seal ring is installed on valve seals installing ring and the adapter seal ring, next on hot-melting machine, heat and the inner cylindrical surface at fusing valve body socket joint position and the external cylindrical surface of adapter, when two cylndrical surface are melted to certain thickness, to take over and insert valve body socket joint position to certain depth, pressurize also cools off it gradually.
The socket joint degree of depth of this structure valve body and adapter directly influences the axial spacing of two valve ball sealing surfaces, influences impacting force in advance.The socket joint degree of depth is big, and pretightening force is big, and the moment of torsion of opening and closing valve is big, and is big to the wearing and tearing of valve ball sealing surface; The socket joint degree of depth is little, and valve ball sealing surface pretightening force is little, leaks hidden danger in existing.And be difficult to guarantee the central lines of valve body and stub (tube) in the socket joint process, regular phenomenon is that these two center lines do not overlap, and angled, make the impacting force of valve ball seal ring and spheroid inhomogeneous on whole sealing strip.From making angle, because two valve ball seal rings lay respectively on valve body and the stub (tube), the technology locating face of processing seal ring installing ring lays respectively on these two parts, therefore, just there is certain error in axial distance after the assembling of two seal ring installing rings because make locating face.In addition, the seal ring impacting force is excessive behind the valve ball, and the sealing surface of valve ball seal ring outwards opens, and the sealing surface inner edge of seal ring contacts with valve ball, but not the contact of whole sealing surface, sealing effect is poor; Impacting force is too small then seal unreliable.
In order to overcome above-mentioned defective, design and a kind of two plunger seal circles are directly installed on the valve body, can accurately control the axial distance of two seal rings, thereby effectively control the plunger valve of the torsional moment of the pretightening force of sealing surface and valve rod, this plunger valve can reduce to produce interior the leakage and the low problem of the excessive product percent of pass that causes of torsional moment because of can not effectively controlling the seal ring axial distance in the present technology greatly, but in this scheme, how need to solve two plunger seal circles accurately is fixed in the valve body, and after fixing, plunger can not move this plunger seal circle when packing in the valve body, and can with the close-fitting problem of plunger.
The model utility content
Technical purpose of the present utility model is to design a kind of can accurately being fixed in the valve body, and still can the holding position after plunger packed into, and with the plunger seal coil structures of the close-fitting plunger valve of plunger.
In order to realize above-mentioned technical purpose, the utility model comprises following technical characteristics: a kind of plunger seal coil structures of plunger valve, the main body of described plunger seal circle are cylinder ring, and cylinder ring one end is a positioning end, and the other end is a sealing surface; Described positioning end is that one section internal diameter is identical with the cylinder ring internal diameter, and external diameter is greater than the prominent ring of cylinder ring external diameter, and the axial length of described prominent ring is less than the axial length of cylinder ring; The profile of described sealing surface forms the curved surface of sealing for cooperatively interacting with the cylinder of plunger.Prominent ring in this scheme is used for embedding in the seal ring mounting groove of valve body, and the coupled columns plug sealing ring axially and radially positions.
Further, the outside of described prominent ring is provided with positioning cylinder, and it axially parallels with the plunger seal circle.Described positioning cylinder be used for valve body on be provided with small cylindrical opening match, be used for locating seal ring circumferentially.
Further, described sealing surface comprises that two adjacent external frame cross sections are the sealing curved surface of curve.Described curve is circular arc, parabola or ellipse.The designs of two sealing curved surfaces be in order to guarantee that plunger fills in the sealing effect of seal ring behind the plunger valve, and its design sealing than a sealing curved surface are stronger.
The utility model compared with prior art, and is in the seal ring mounting groove that embeds valve body, close to plungerSeal axially and radially positions, and realizes and the sealing effect of plunger that by sealing surface its fixed effect is accurate, with closely cooperating of plunger, good sealing effect.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of another angle of the utility model;
Fig. 3 is the structural representation of another angle of the utility model;
Fig. 4 is the structural representation of another angle of the utility model;
Fig. 5 is an assembling schematic representation of the present utility model.
Embodiment
Shown in Fig. 1~4, the main body of plunger seal circle 3 of the present utility model is a cylinder ring 33, end at this cylinder ring has the one section prominent ring 31 of an external diameter greater than cylinder ring, the internal diameter of this prominent ring 31 is identical with the oval band of column, be used for embedding in the seal ring mounting groove in the valve body, coupled columns plug sealing ring 3 carries out axially and location radially.The outside of prominent ring 31 has the little positioning cylinder 311 of plunger seal circle 3 parallel to an axiss, this positioning cylinder 311 to be used for cooperating with small cylindrical opening on the valve body, is used for the circumferential of position ram seal ring 3.The sealing surface 32 of described plunger seal circle 3 is that the sealing curved surface 321 that two adjacent external frame cross sections are curve constitutes, and the cross section curve that constitutes curved surface can be the curve of a section circular arc, parabola, ellipse or other shapes.The global shape of these two sealing curved surfaces 321 be cylindrical with plunger seal circle 3 axis normal, be used for that cylinder with plunger 8 matches and, the formation sealing surface.
As shown in Figure 5, Fig. 5 is an erection drawing of the present utility model, comprise valve body 1, valve bottom 2, plunger seal circle 3, plunger seal circle support ring 4, about take over 5, valve rod 6, valve thimble 7, plunger 8, valve stem packing ring 9, valve rod end-face seal ring 10.During assembling, at first two plunger seal circles 3 and plunger seal circle support ring 4 are installed at valve body 1 both sides stub (tube).The positioning cylinder 311 of plunger seal circle 3 is inserted in the circumferential positioning hole of seal ring of valve body, and encircle 31 with dashing forward and carry out the axial of plunger seal circle and location radially, then plunger seal circle support ring 4 is embedded in the bracing ring locating slot of valve body, then two adapters are welding on the stub (tube) of valve body 1; Then valve stem packing ring 9 and end-face seal ring are installed on the valve rod 6, valve rod 6 are pushed in the valve rod axis hole of valve body, make the axially locating projection on the valve rod embed the stem shaft of valve body axis hole in locating slot; Then plunger 8 is pushed in the plunger compartment valve bottom 2 in the melting welding.

Claims (5)

1. the plunger seal coil structures of a plunger valve, it is characterized in that: the main body of described plunger seal circle (3) is cylinder ring (33), and cylinder ring (33) one ends are positioning end, and the other end is sealing surface (32); Described positioning end is that one section internal diameter is identical with cylinder ring (33) internal diameter, and external diameter is greater than the prominent ring (31) of cylinder ring (33) external diameter, and the axial length of described prominent ring (31) is less than the axial length of cylinder ring (33); The profile of described sealing surface (32) forms the curved surface of sealing for cooperatively interacting with the cylinder of plunger.
2. the plunger seal coil structures of plunger valve according to claim 1, it is characterized in that: the outside of described prominent ring (31) is provided with positioning cylinder (311).
3. the plunger seal coil structures of plunger valve according to claim 2, it is characterized in that: described positioning cylinder (311) axially parallels with plunger seal circle (3).
4. according to the plunger seal coil structures of each described plunger valve of claim 1~3, it is characterized in that: described sealing surface (32) comprises the sealing curved surface (321) that two adjacent external frame cross sections are curve.
5. the plunger seal coil structures of plunger valve according to claim 4, it is characterized in that: described curve is circular arc, parabola or ellipse.
CN2009201938659U 2009-09-01 2009-09-01 Plunger sealing ring structure of plunger valve Expired - Fee Related CN201627964U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201938659U CN201627964U (en) 2009-09-01 2009-09-01 Plunger sealing ring structure of plunger valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201938659U CN201627964U (en) 2009-09-01 2009-09-01 Plunger sealing ring structure of plunger valve

Publications (1)

Publication Number Publication Date
CN201627964U true CN201627964U (en) 2010-11-10

Family

ID=43059356

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201938659U Expired - Fee Related CN201627964U (en) 2009-09-01 2009-09-01 Plunger sealing ring structure of plunger valve

Country Status (1)

Country Link
CN (1) CN201627964U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534118A (en) * 2015-01-13 2015-04-22 武汉汉德阀门仪表有限公司 Rotary drum shut-off valve and method for machining cylindrical valve element and sealing bases of rotary drum shut-off valve
CN107781448A (en) * 2017-11-24 2018-03-09 泗县金皖泵业有限公司 A kind of antifreeze ball valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534118A (en) * 2015-01-13 2015-04-22 武汉汉德阀门仪表有限公司 Rotary drum shut-off valve and method for machining cylindrical valve element and sealing bases of rotary drum shut-off valve
CN107781448A (en) * 2017-11-24 2018-03-09 泗县金皖泵业有限公司 A kind of antifreeze ball valve

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101110

Termination date: 20150901

EXPY Termination of patent right or utility model