CN2588154Y

CN2588154Y - Valve lever seal assembly for self-seal oil-feeding gun

Info

Publication number: CN2588154Y
Application number: CN 02288415
Authority: CN
Inventors: 许贵华
Original assignee: 许贵华
Current assignee: Chen Cangqi
Priority date: 2002-12-18
Filing date: 2002-12-18
Publication date: 2003-11-26
Anticipated expiration: 2012-12-18

Abstract

The utility model relates to a valve lever seal assembly for a self-seal oil-feeding gun, which is composed of a valve core, a pressure spring, a valve cover, a valve lever and a seal assembly. The utility model is characterized in that the seal assembly comprises a seal seat and a seal member, wherein, the seal seat is a tubular outer wall and is tightly matched with an opening on a gun body; an inner hole is movably matched with the valve lever, and steps are formed by expanding holes on near end parts of one end or two ends. An end surface is provided with turnover openings of an inner wrench, and the seal member is sealed on the steps of the near end parts of the seal seat and in a ring gap between openings of the inner wrench. The turnover openings are formed by the inner wrench after the flange part is partly loaded into a seal ring so the seal member is buckled so as to not absolutely move and pull out. The reliability of seal is enhanced with adopting the sealing of two ends. The utility model has the advantages of simple structure, convenient assembly and long service life.

Description

Self-styled nozzle valve rod sealing assembly

The utility model relates to a kind of self-styled nozzle, especially a kind of valve rod sealing assembly of self-styled nozzle.The nozzle that in numerous gas stations, uses at present, basically be the rifle body, gun barrel, the main control fuel tap, diaphragm valve, draught damper, Handleset and black box are formed, its draught damper is provided with vent and communicates with the air cavity of diaphragm valve, oil adds when filling with, gun barrel is immersed in the oil, vent on the oil outlet tube is blocked up by oil sealing, gas can not be inhaled into, the convection action of draught damper makes the diaphragm valve air cavity produce negative pressure, thereby diaphragm projection drives that valve rod moves and thus the co-acting lever assembly close the main control fuel tap is drop-down, its design principle is advanced, simple in structure, easy to use and reliable, laborsaving, but its black box, particularly the valve rod sealing assembly of main control fuel tap is made up of band retaining ring sealing seat and the hard rubber-coated seal ring of core appearance of annular, sealing seat, close-fitting between seal ring and rifle body, with movable cooperation the between valve rod, its shortcoming is, the one, reach close-fitting because only depend on tension force to produce surface friction drag between seal ring and rifle body, owing to very easily producing to relatively move, the friction effect of machining accuracy sum of errors valve rod and the oily wall of seal ring causes leakage; The 2nd, primary seal is only arranged, if then just directly effusion of fluid of oil seal failure takes place, have no to stop so direct working life that influences oil gun.

The purpose of this utility model is intended to provide a kind of band seal ring clinching structure, and sealing is reliable, the self-styled nozzle black box of long service life.

The technological scheme that realizes the utility model purpose is such: self-styled nozzle valve rod sealing assembly is made up of spool 2, stage clip 3, valve gap 4, valve rod 5 and black box 6, sealing assembly 6 comprises sealing seat 61 and Sealing 62, described sealing seat 61 is the perforate close-fitting on outer tubular wall and the rifle body, endoporus cooperates with valve handle activity, one end or two end close end reamings form step 61a, the turned welt 61b that pulls in end face is provided with, pad 63, Sealing 62 successively the packed clinching of phase poststack the step 61a of sealing seat 61 close ends and in pull in the annular space between turned welt 61b; Certainly, Sealing 62 can be that inner hole section is waveform, camber, trapezoidal, the jagged seal ring of triangle or O RunddichtringO.

Self-styled nozzle valve rod sealing assembly of the present utility model, because the sealing seat flange portion is pulled the formation turned welt in the quilt behind the seal ring of packing into, thereby withhold Sealing, it can never be deviate from displacement, adopt the sealing of two ends, improved sealing reliability, and simple in structure, easy to assembly, long service life.

Description of drawings:

Fig. 1 is Oil gun with automatic cutoff device embodiment's 1 an of the present utility model structural representation;

Fig. 2 is that Oil gun with automatic cutoff device embodiment 1,2 sealing seats of the present utility model are not pulled a mouthful preceding structural representation;

Fig. 3 is the structural representation of Oil gun with automatic cutoff device embodiment 1 black box part of the present utility model;

Fig. 4 is the structural representation of Oil gun with automatic cutoff device embodiment 2 black boies part of the present utility model;

The utility model is described in further detail below in conjunction with accompanying drawing

Embodiment 1

From Fig. 1 and Fig. 2 Oil gun with automatic cutoff device valve rod sealing assembly of the present utility model as can be known and rifle body close-fitting, by sealing seat 61, Sealing 62 is formed, and the sealing seat before unassembled as shown in Figure 3, it is a tubulose, biend is provided with flange, close end place endoporus enlarges with the stage casing endoporus and forms step-like 61a, pack into rifle body 1 back with special tool be after pulling in the sealing seat flange shown in Fig. 2 in turn over shape in pull turned welt 61b, Sealing 62 is the O RunddichtringO, pad 63 laminate thereon by interior pull turned welt 61b closure in step 61a and in pull between turned welt 61b and step 61a in the formed annular space.

Embodiment 2

By Fig. 4, Fig. 5 as can be known, Oil gun with automatic cutoff device valve rod sealing assembly of the present utility model, it is made up of sealing seat 61, seal ring 62 and pad 63, the inner hole wall cross section of sealing ring is the arcuate serrated shape, and sealing seat is as shown in Figure 3 before unassembled, it is a tubulose, biend is provided with flange, close end place endoporus enlarges with the stage casing endoporus and forms step-like 61a, after packing into through special tool envelope press turn in then being shown in Fig. 2 shape in pull turned welt 61b, its with pad 63, seal ring 62 closures step 61a and in pull between turned welt 61b in the formed annular space.

Certain structure of the present utility model also is not limited only to shown in the foregoing description, and as seal ring, its inner hole wall longitudinal section also can also be the ripple glaze shape, trapezoid shaped, the sawtooth of triangle.

Claims

1. self-styled nozzle valve rod sealing assembly, it is characterized in that: sealing assembly (6) is made up of sealing seat (61) and Sealing (62), described sealing seat (61) is a tubulose, perforate close-fitting on outer wall and the rifle body, endoporus cooperates with valve handle activity, one end or two end close end reamings form step (61a), the turned welt of pulling in end face is provided with (61b), pad (63), Sealing (62) be folded mutually successively be encapsulated in sealing seat (61) close end step (61a) and in pull in the annular space between turned welt (61b).

2. valve rod sealing assembly as claimed in claim 1 is characterized in that: described Sealing (62) is that inner hole section is waveform, camber, trapezoidal, the jagged seal ring of triangle or O RunddichtringO.