CN202493772U

CN202493772U - Valve core

Info

Publication number: CN202493772U
Application number: CN2012200853091U
Authority: CN
Inventors: 陈丹跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-10-17
Anticipated expiration: 2022-03-08

Abstract

The utility model relates to a valve core which comprises an upper valve core stem casing, a lower valve core stem casing and a valve core bar. A lower portion of the outer side of the upper valve core stem casing and an upper portion of the inner side of the lower valve core stem casing are in threaded connection and form a cavity. The valve core bar is arranged inside the cavity formed by the upper valve core stem casing and the lower valve core stem casing. A middle portion of the valve core bar is provided with an annular protrusion. The valve core bar is provided with a spring in a sleeve mode, the upper end of the spring is abutted against the lower end of the annular protrusion, and the lower end of the spring is abutted against the bottom of the inner side of the lower valve core stem casing. The upper end of the valve core bar penetrates through the upper valve core stem casing, and the lower end of the valve core bar penetrates through the lower valve core stem casing, is connected with a valve clack, and is provided with a stair-step groove. A washer is arranged inside the stair-step groove. A copper gasket is arranged above the washer, and a ring-retainer is arranged below the washer. The copper gasket and the ring-retainer are both arranged inside the stair-step groove on the lower end of the valve core bar. The valve core has the advantages that the structure is reasonable, the problem that a valve core produces noise or even becomes useless after the valve core is used for a period of time is effectively resolved, the service life is long, and the manufacture cost is low.

Description

Spool

Technical field

The utility model relates to a kind of spool.

Background technique

Present spool generally is made up of valve core rod, flap, seal ring, the packing ring and the inner spring that are arranged on the flap; Valve core rod passes valve core; Flap is fixed on the valve core rod through groove, and valve core rod and flap be for dividing a body structure, and the packing ring on the flap generally is hooked on the flap with hook.Yet in use find; Spool will produce noise and inefficacy easily after using a period of time; Its reason is the unreasonable structure of spool guide rod, and being connected between valve core rod and the flap is easy to go wrong, thereby produces noise even valve control fails.

The model utility content

The purpose of the utility model provides a kind of spool, overcomes the deficiency of above-mentioned aspect in the existing product.

The purpose of the utility model is to realize through following technological scheme:

A kind of spool; Comprise upper valve core bar cover, lower valve core bar cover and valve core rod, said upper valve core bar cover outer lower portion is threaded with lower valve core bar cover inside upper part and forms a cavity, is provided with valve core rod in the cavity that upper valve core bar cover and lower valve core bar cover form; The valve core rod middle part is provided with annular protrusion; Be with spring on the valve core rod, the spring upper end is resisted against the annular protrusion lower end, and the spring lower end abutment is overlapped inner bottom part in lower valve core bar; The valve core rod upper end passes upper valve core bar cover, and the valve core rod lower end passes the lower valve core bar cover and is connected with flap, and the valve core rod lower end is provided with cascade groove, is provided with packing ring in the cascade groove.

Said upper valve core bar cover inner top is provided with first seal groove, is provided with first seal ring in first seal groove, and first seal ring below is provided with the seal ring abutment, and the seal ring abutment is connected with upper valve core bar thread die cutting.The said upper valve core bar cover outside is provided with second seal groove with lower valve core bar cover joint, is provided with second seal ring in second seal groove.

The said lower valve core bar cover outside is provided with the 3rd seal groove, is provided with the 3rd seal ring in the 3rd seal groove.

Said packing ring top is provided with copper backing, and the packing ring below is provided with elastic collar, and copper backing and elastic collar all are arranged in the cascade groove of valve core rod lower end.

The beneficial effect of the utility model is: rational in infrastructure, efficiently solve spool produces noise even inefficacy after use a period of time problem, long service life, low cost of manufacture.

Description of drawings

According to accompanying drawing the utility model is done further explain below.

Fig. 1 is the structural representation of the described spool of the utility model embodiment;

Fig. 2 is the structural representation of the upper valve core bar cover of the described spool of the utility model embodiment;

Fig. 3 is the structural representation of the valve core rod of the described spool of the utility model embodiment.

Among the figure:

1, upper valve core bar cover; 101, first seal groove; 102, first seal ring; 103, seal ring abutment; 104, second seal groove; 105, second seal ring; 2, lower valve core bar cover; 201, the 3rd seal groove; 202, the 3rd seal ring; 3, valve core rod; 301, annular protrusion; 302, cascade groove; 4, cavity; 5, spring; 6, flap; 7, packing ring; 8, copper backing; 9, elastic collar.

Embodiment

Shown in Fig. 1-3; The described a kind of spool of the utility model embodiment; Comprise upper valve core bar cover 1, lower valve core bar cover 2 and valve core rod 3, said upper valve core bar overlaps 1 outer lower portion and lower valve core bar and overlaps 2 inside upper part and be threaded and form a cavity 4, is provided with valve core rod 3 in the cavity 4 of upper valve

core bar cover

1 and 2 formation of lower valve core bar cover; Valve core rod 3 middle parts are provided with annular protrusion 301; Be with spring 5 on the valve core rod 3, spring 5 upper ends are resisted against annular protrusion 301 lower ends, and spring 5 lower end abutment are overlapped 2 inside bottom in lower valve core bar; Valve core rod 3 upper ends pass upper valve core bar cover 1, and valve core rod 3 lower ends pass lower valve core bar cover 2 and are connected with flap 6, and valve core rod 3 lower ends are provided with cascade groove 302, are provided with packing ring 7 in the cascade groove 302.

Said upper valve core bar overlaps 1 inner top and is provided with and is provided with first seal ring, 102, the first seal rings, 102 belows in first seal groove, 101, the first seal grooves 101 and is provided with seal ring abutment 103, and seal ring abutment 103 is threaded with upper valve core bar cover 1.Said upper valve core bar overlaps 1 outside and lower valve core bar and overlaps 2 joints and be provided with in second seal groove, 104, the second seal grooves 104 and be provided with second seal ring 105.

Said lower valve core bar overlaps 2 outsides and is provided with in the 3rd seal groove 201, the three seal grooves 201 and is provided with the 3rd seal ring 202.

Said packing ring 7 tops are provided with copper backing 8, and packing ring 7 belows are provided with elastic collar 9, and copper backing 8 all is arranged in the cascade groove 302 of valve core rod 3 lower ends with elastic collar 9.

Wherein, flap 6 both can be the split structure with valve core rod 3, also can be overall structure.

During use, valve core rod 3 can be along moving up and down under the effect of the elastic force of spring 5; Packing ring 7 tops are provided with copper backing 8; Packing ring 7 belows are provided with elastic collar 9, because elastic collar 9 has certain deformability, even if therefore deformation takes place elastic collar 9; Elastic collar 9 still can produce the power of packing ring 7 to copper backing 8 directions that makes; Thereby packing ring 7 can not be moved when work, so that produce valve reflux flow noise, even come off.

The utility model is not limited to above-mentioned preferred forms; Anyone can draw other various forms of products under the enlightenment of the utility model; No matter but on its shape or structure, do any variation; Every have identical with a application or akin technological scheme, all drops within the protection domain of the utility model.

Claims

1. spool; Comprise upper valve core bar cover (1), lower valve core bar cover (2) and valve core rod (3); It is characterized in that: said upper valve core bar cover (1) outer lower portion is threaded with lower valve core bar cover (2) inside upper part and forms a cavity (4); Be provided with valve core rod (3) in the cavity (4) that upper valve core bar cover (1) and lower valve core bar cover (2) form, valve core rod (3) middle part is provided with annular protrusion (301), is with spring (5) on the valve core rod (3); Spring (5) upper end is resisted against annular protrusion (301) lower end, and spring (5) lower end abutment is in lower valve core bar cover (2) inside bottom; Valve core rod (3) upper end passes upper valve core bar cover (1), and valve core rod (3) lower end passes lower valve core bar cover (2) and is connected with flap (6), and valve core rod (3) lower end is provided with cascade groove (302), is provided with packing ring (7) in the cascade groove (302).

2. spool according to claim 1; It is characterized in that: said upper valve core bar cover (1) inner top is provided with first seal groove (101); Be provided with first seal ring (102) in first seal groove (101); First seal ring (102) below is provided with seal ring abutment (103), and seal ring abutment (103) is threaded with upper valve core bar cover (1).

3. spool according to claim 2 is characterized in that: said upper valve core bar cover (1) outside is provided with second seal groove (104) with lower valve core bar cover (2) joint, is provided with second seal ring (105) in second seal groove (104).

4. spool according to claim 3 is characterized in that: said lower valve core bar cover (2) outside is provided with the 3rd seal groove (201), is provided with the 3rd seal ring (202) in the 3rd seal groove (201).

5. according to each described spool of claim 1-4; It is characterized in that: said packing ring (7) top is provided with copper backing (8); Packing ring (7) below is provided with elastic collar (9), and copper backing (8) and elastic collar (9) all are arranged in the cascade groove (302) of valve core rod (3) lower end.