CN204628565U - A kind of novel piston combination seal - Google Patents

A kind of novel piston combination seal Download PDF

Info

Publication number
CN204628565U
CN204628565U CN201520286469.6U CN201520286469U CN204628565U CN 204628565 U CN204628565 U CN 204628565U CN 201520286469 U CN201520286469 U CN 201520286469U CN 204628565 U CN204628565 U CN 204628565U
Authority
CN
China
Prior art keywords
sealing
cylinder
piston
combination seal
seal
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
CN201520286469.6U
Other languages
Chinese (zh)
Inventor
奚希
凌义徳
韩坤
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.)
Shanghai Fudibao Sealing Technology Co Ltd
Original Assignee
Shanghai Fudibao Sealing Technology 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 Shanghai Fudibao Sealing Technology Co Ltd filed Critical Shanghai Fudibao Sealing Technology Co Ltd
Priority to CN201520286469.6U priority Critical patent/CN204628565U/en
Application granted granted Critical
Publication of CN204628565U publication Critical patent/CN204628565U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A kind of novel piston combination seal, the basis of traditional piston combination seal is improved, by the arc contact surface of the Polyurethane seals on original top, be transformed into the protuberance contacts of sealing member of modified Teflon, be provided with groove in sealing member of modified Teflon simultaneously, embedded in irregular Polyurethane seals, thus increase surface of contact.The utility model play phenomenon that piston rod produces when cylinder efficient is eliminated, and the abnormal sound that sealing and cylinder body produce also is eliminated, and also extends the working life of equipment simultaneously.

Description

A kind of novel piston combination seal
Technical field
The utility model relates to a kind of novel piston combination seal, is mainly used in the gap between sealed cylinder piston and cylinder barrel, prevents from leaking in hydraulic oil.
Background technique
In oil cylinder design, sealing system generally includes rod seal and piston seal.Piston seal combination is mounted on piston, and Main Function is the gap between packed-piston and cylinder barrel, prevents from leaking in hydraulic oil.Piston seal is the primary seal in oil hydraulic cylinder, bidirectional bearing, is one of oil hydraulic cylinder main Sealing that can bear force value.Major requirement for piston seal has good sealing effect, and under having state of rest, pressurize is effective, and in movement process, bearing capacity is strong, and anti-extrusion, friction factor is little, long service life etc.The correct type selecting of Sealing and collocation are the key factors determining sealing system performance.
Because use medium mostly to be aircraft fluid in oil cylinder, its viscosity is lower, and piston seal traditional at present as shown in Figure 1, there will be piston rod when cylinder efficient and produce play, sealing and cylinder body produce abnormal sound phenomenon, and sealing effect is affected simultaneously, reduces the working life of product.
Model utility content
The purpose of this utility model is exactly to overcome the above problems, a kind of novel piston combination seal is provided, transform the form construction design of traditional piston combination seal, the play phenomenon that during solution cylinder efficient, piston rod occurs, eliminates the abnormal sound produced between sealing and cylinder body.
The technical solution of the utility model is achieved in that a kind of novel piston combination seal, comprises the support ring of ring-type, is inserted into the elastomer of support ring end opening, is inserted into support ring interior Sealing suitable for reading; Be characterized in: described interior Sealing suitable for reading is sealing member of modified Teflon, the upper surface of sealing member of modified Teflon is concave plane shape, be provided with groove on the top of sealing member of modified Teflon, groove is built with the Polyurethane seals of irregular surface.
The utility model improves on the basis of traditional piston combination seal, by the arc contact surface of the Polyurethane seals on original top, be transformed into the protuberance contacts of sealing member of modified Teflon, be provided with groove in sealing member of modified Teflon simultaneously, embedded in irregular Polyurethane seals, thus increase surface of contact, this enhance friction, after using the piston combination seal after improving, the play phenomenon that during cylinder efficient, piston rod produces is eliminated, the abnormal sound that sealing and cylinder body produce also is eliminated, and also extends the working life of equipment simultaneously.Have installation more convenient, steadiness is stronger, the special seal effects such as resistance to erosion leakage proof; Extend working life and the sealing effect of cylinder part.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments.
Accompanying drawing explanation
Fig. 1 is existing piston combination seal.
Fig. 2 is structural representation of the present utility model.
In figure: 1---Polyurethane seals; 2---sealing member of modified Teflon; 3---support ring; 4---elastomer.
Embodiment
The utility model is on the basis of traditional oil cylinder piston combination seal, controls by changing its composite structure to realize the play that piston rod occurs in cylinder efficient.Piston in combination Sealing (as shown in Figure 1) in the past comprise ring-type support ring 3, be inserted into support ring 3 end opening elastomer 4, be inserted into support ring 3 suitable for reading in Polyurethane seals 1 form, and Polyurethane seals 1 and the surface of contact of oil cylinder medium are relative mellow and full cambered surfaces, in real work, in oil cylinder, use medium mostly to be aircraft fluid, its viscosity is lower, there will be piston rod when cylinder efficient and produce play, sealing and cylinder body produce abnormal sound phenomenon, sealing effect is affected simultaneously, reduces the working life of product.
The structure of the utility model to original seal combination is improved (as shown in Figure 2), by the Polyurethane seals 1 on original top, replace to the combination by sealing member of modified Teflon 2 and Polyurethane seals sealing 1, first, in the design of sealing member of modified Teflon 2, what we adopted is irregular contact face, add denation, be provided with groove in centre simultaneously, then Polyurethane seals 1 is also designed to irregular shape, load in groove, this transformation effectively inhibits the play of piston rod, thus achieve the abnormal sound eliminated and produce between sealing and cylinder body.

Claims (1)

1. a novel piston combination seal, comprises the support ring (3) of ring-type, is inserted into the elastomer (4) of support ring (3) end opening; Be inserted into support ring (3) interior Sealing suitable for reading; It is characterized in that: described interior Sealing suitable for reading is sealing member of modified Teflon (2), the upper surface of sealing member of modified Teflon (2) is concave plane shape, be provided with groove on the top of sealing member of modified Teflon (2), groove is built with the Polyurethane seals (1) of irregular surface.
CN201520286469.6U 2015-05-05 2015-05-05 A kind of novel piston combination seal Expired - Fee Related CN204628565U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520286469.6U CN204628565U (en) 2015-05-05 2015-05-05 A kind of novel piston combination seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520286469.6U CN204628565U (en) 2015-05-05 2015-05-05 A kind of novel piston combination seal

Publications (1)

Publication Number Publication Date
CN204628565U true CN204628565U (en) 2015-09-09

Family

ID=54047598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520286469.6U Expired - Fee Related CN204628565U (en) 2015-05-05 2015-05-05 A kind of novel piston combination seal

Country Status (1)

Country Link
CN (1) CN204628565U (en)

Similar Documents

Publication Publication Date Title
CN205207320U (en) Single piston rod pneumatic cylinder
CN204201078U (en) A kind of y-type seal ring
CN201627923U (en) Elastic compensating type Y-shaped combined sealing ring
CN204628565U (en) A kind of novel piston combination seal
CN203756811U (en) Hydraulic cylinder with secondary sealing structure
CN201884786U (en) Two-way cartridge inserted valve
CN204253849U (en) A kind of combined seal ring
CN203162153U (en) Stair-shaped sealing piece and stair-shaped coaxial sealing piece
CN202789837U (en) Variable oil cylinder with glyd ring
CN202851965U (en) Novel sealing ring
CN201165969Y (en) PG pump hydraulic end leakage-free packer
CN203335377U (en) Self-adaption loss-free plunger pump shaft sealing device
CN204357824U (en) A kind of band X sealing configuration oil cylinder
CN201407231Y (en) Hydraulic cylinder structure
CN204592532U (en) A kind of valve axial seal structure
CN203098461U (en) Hydraulic cylinder and sealing assembly thereof
CN203892298U (en) Multi-seal oil cylinder
CN209261955U (en) A kind of hydraulic cylinder hydraulic cushion structure for having hydraulic one-way function
CN101776147B (en) Dynamic seal structure with automatic compensation function
CN202545652U (en) Anti-scratching clutch booster
CN203176365U (en) Pressureproof piston sealing element
CN203051504U (en) Sliding block type combined sealing piece for hydrostatic guideways
CN209164213U (en) A kind of Horizontal hydraulic dual cylinder supercharging device
CN205858841U (en) A kind of cone seals micro hydraulic oil cylinder
CN202118179U (en) Oil damper

Legal Events

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

Granted publication date: 20150909

Termination date: 20170505

CF01 Termination of patent right due to non-payment of annual fee