CN102943905A

CN102943905A - Check type meter joint

Info

Publication number: CN102943905A
Application number: CN2012104677040A
Authority: CN
Inventors: 董服义
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-19
Filing date: 2012-11-19
Publication date: 2013-02-27
Anticipated expiration: 2032-11-19
Also published as: CN102943905B

Abstract

The invention discloses a check type meter joint, which comprises a joint screw nut and a connecting pipe, wherein the joint screw nut is connected with a meter tool through screw threads, the connecting pipe is used for being connected with a pipe fitting, the part of the inner end of the connecting pipe in contact with the joint screw nut is provided with an annular convex shoulder, the outer end of the joint screw nut is provided with a baffle edge matched with the annular convex shoulder, the end part of the inner end of the connecting pipe is provided with a sealing ring seat, the end part of the outer end of the connecting pipe is provided with screw threads matched with the pipe element in a surrounding way, an inner card of the connecting pipe is provided with an inner core capable of forwards and backwards moving in the axial direction under the external force effect, one end of the inner core is provided with a plug with the surface covered by flexible materials, a retainer ring realizing the sealed matching with the plug is arranged on the inner wall of the connecting pipe, the inner side part on the inner wall of the connecting pipe, near the retainer ring is provided with a circle of annular groove, a cavity is formed in the inner core, the cavity is provided with an opening in the medium circulation direction, and the side wall of the inner core is communicated with the cavity of the inner core for forming a circulation passage for medium circulation. The meter joint has the advantages that the check structure is simple, the circulation area is large, the lockage cannot easily occur, the service life is long, and the cost is saved.

Description

The non-return meter connector

Technical field

The present invention relates to gas, water and jet liquid meter component, especially relate to a kind of meter connector with check function.

Background technique

At present, when using tap water or combustion gas, a gauge table can be installed to be measured use amount, yet in traditional installation process, mounting type to gauge table is after entrance point adopts a ball valve that leads directly to and a meter connector is connected, be connected with the entrance point of gauge table again, thereby reach the break-make of gauge table controlled.In water supply pipe, usually can a safety check be installed before ball valve, prevent that ducted medium from flowing backwards, or cause user's water tower water source water conservancy diversion because the side of water supply cuts off the water, to prevent the gauge table reversing or to damage.

Adopt these safety check, increased ducted connected element, cost is high, and speed of application is slow, has also increased the potential safety hazards such as leakage.Moreover, existing safety check is established an interior plug usually in valve body, when reverse circulated, interior plug end and valve body are realized being sealed and matched, when forward circulated, medium flowed out from interior plug both sides after flowing into from interior plug end, and medium can only circulate between Nei Sai and valve interior wall, circulation area is little, easily produces and stops up; Some valve body is arranged to the T font with interior plug, arrange that in interior plug rear end a spring is to give active force forward of interior plug, the circulation area of this structure has increase, but easily damage, reduced working life, and spring is owing to being in for a long time compressive state, when medium water conservancy diversion moment, can stop it to move to pulling force of interior plug, cause in time throttle down.

Summary of the invention

The present invention is in order to overcome the deficiencies in the prior art, provides that a kind of non-return is timely, circulation area large, the non-return meter connector of long service life, adopt this meter connector after, can reduce the connected element of gauge table, reduce cost, avoid leaking.

To achieve these goals, the present invention is by the following technical solutions: a kind of non-return meter connector, comprise the Female connector fittings that is threaded with the table tool and the adapter that is used for linking to each other with pipe fitting, take over the inner and be provided with an annular convex shoulder with the Female connector fittings contact segment, the outer end of Female connector fittings is provided with the gear edge that cooperates with annular convex shoulder, take over inner end and be provided with packing holder, be arranged with the screw thread that matches with pipe fitting outside the end, outer end, be arranged with the inner core that can in taking over, move forward and backward vertically under the External Force Acting in the described adapter, inner core one end is the plug with the surface that is covered by flexible material, and nozzle inner wall is provided with the back-up ring that is sealed and matched with this plug realization; Be provided with a ring annular groove near the inboard place of back-up ring on the nozzle inner wall, interior in-core is formed with a chamber, and chamber is provided with opening along the medium circulating direction, and the inner core sidewall is communicated with to form a through-flow channel for the medium circulation with its chamber.

As preferably, described inner core is communicated with its chamber near the sidewall of plug one end, and the through-flow channel that circulates to form a confession medium makes medium one can enter the chamber of inner core by plug, is conducive to the circulation of medium.

Described inner core is evenly equipped with 4 through holes near on the sidewall of plug one end, and through hole and chamber form through-flow channel.These 4 through holes form and are communicated with chamber, consist of a larger circulation passage, guarantee that MEDIA FLOW is all smooth, also can be that the structure of whole inner core is firmer, and are not fragile.

Further, the outer surface of described plug is hemispherical dome structure, is provided with the round table surface that matches with hemispherical dome structure with the plug contacting point on the back-up ring, increases sealing.

Described back-up ring is located at and is taken near on the inner inwall.

Described back-up ring is located at and is taken near on the inwall of outer end.

The inwall of described adapter is provided with one and stops that inner core shifts out the snap ring in taking over.

Further, be provided with vertically an annular section outside the described back-up ring.

Further, the edge of described through hole is provided with tangent plane along the medium circulating direction.

In sum, the present invention has the following advantages: this meter connector has check function, has changed the function singleness of traditional meter connector, has saved cost, and its non-return structure is simple, and non-return is timely, and circulation area is large, is difficult for stopping up long service life.

Description of drawings

Fig. 1 is a kind of embodiment's of the present invention structural representation.

Fig. 2 is partial structurtes schematic diagram of the present invention.

Fig. 3 is another kind of embodiment's of the present invention structural representation.

Fig. 4 is the structural representation of inner core of the present invention.

Embodiment

In order to make those skilled in the art person better understand the present invention program, below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is carried out clear, complete description.

As shown in Figure 1, a kind of non-return meter connector, before being installed on table, comprise the Female connector fittings 1 that is threaded with the table tool and the adapter 2 that is used for linking to each other with pipe fitting, take over 2 the inners and be provided with an annular convex shoulder 21 with Female connector fittings 1 contact segment, the outer end of Female connector fittings 1 is provided with the gear that cooperates with annular convex shoulder 21 along 11, take over 2 inner ends and be provided with packing holder 26, be arranged with the screw thread that matches with pipe fitting outside the end, outer end, be arranged with in the described adapter 2 in taking over the inner core 3 that moves forward and backward vertically in 2 under the External Force Acting, inner core 3 is made of such as copper by the metal example, inner core 3 one ends are plug 31, plug 31 has the surface that is covered by the rubber seal member, the inwall of taking over 2 one ends is provided with one and stops that inner core shifts out the snap ring in taking over, the inwall of taking over 2 the other ends is provided with the back-up ring 22 that is sealed and matched with 31 realizations of this plug, inner core 3 can move around between back-up ring 22 and snap ring, in the present embodiment, by offering a ring groove 23 at adapter 2 inwalls, snap ring places in this annular groove 23, be used for stopping that inner core is outwards mobile, back-up ring 22 is located at and is taken over 2 near on the inwall of outer end, after being installation table tool such as the present invention, then back-up ring 22 is located at and is taken over 2 near on the inner inwall, as shown in Figure 3; Take on 2 inwalls and be provided with a ring annular groove 24 near back-up ring 22 inboard places, inner core 3 sidewalls are communicated with the chamber of inner core, to form a through-flow channel 34 for the medium circulation, in the present embodiment, evenly offer 4 through holes 35 at inner core 3 near on the sidewall of plug 31 1 ends, as described in Figure 4, be the stereogram of inner core 3, medium is the flow chart tool from pipeline, wash inner core open, enter in the adapter, flow into inner core chamber 38 from through hole 35, then flow out and take over.The inner core of the present invention by a boring is set is as interior plug, medium can from the outer wall of inner core nearly 1/2nd area flow to inner core, flow out from the inner core inner chamber again and take over, compare with traditional non-return structure, greatly increased circulation area, the chamber of whole inner core is all as circulation passage; Be provided with a ring annular groove 24 near back-up ring 22 inboard places and take on 2 inwalls, to increase the distance between interior outer core and the nozzle inner wall, offer the larger circulation area of medium.Moreover the area of contact of inner core end and plug is large, and when medium impacted plug, working life all as keeping out face, had been improved in the whole end of inner core.When medium water conservancy diversion moment, medium impacts the bottom of inner core chamber, and whole inner core is rushed at back-up ring, cooperates the realization rapid-closure damper with retaining ring sealing.Because the bottom of whole chamber all as the shock surface of medium, not only can make the inner core fast moving to the back-up ring place, and inclined to one side rail phenomenon can not occur when mobile, improve its working life yet.

In the present embodiment, by a boss 29 is set in the inner core end, plug is by being stuck in interior edge face with boss, thereby realizes fixing between plug and the inner core end.

In the present embodiment, the outer surface of described plug 31 is hemispherical dome structure, is provided with the round table surface 221 that matches with hemispherical dome structure with plug 31 contacting points on the back-up ring 22, spheric structure is set, not only can increase sealing, also can increase the velocity of liquid assets of medium, be conducive to the medium circulation.

Described back-up ring 22 outsides are provided with an annular section, and a round platform conical surface namely is set, and the edge of through hole 35 is provided with tangent plane along the medium circulating direction, are conducive to the medium circulation, increase flow velocity.

The present invention is by setting up retaining element in meter connector, make meter connector annex the effect of safety check, the connection of having saved safety check, not only reduce construction sequence, improved efficient, also reduced connected element, save cost, reduced the occurrence probability of leakage accident; Moreover the circulation area of retaining element of the present invention is large, be difficult for stopping up, and simple in structure, long service life.

Obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills should belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.

Claims

1. non-return meter connector, comprise the Female connector fittings (1) that is threaded with the table tool and the adapter (2) that is used for linking to each other with pipe fitting, take over (2) the inner and be provided with an annular convex shoulder (21) with Female connector fittings (1) contact segment, the outer end of Female connector fittings (1) is provided with the gear edge (11) that cooperates with annular convex shoulder (21), take over (2) inner end and be provided with packing holder, be arranged with the screw thread that matches with pipe fitting outside the end, outer end, it is characterized in that: be arranged with the inner core (3) that can in taking over (2), move forward and backward vertically under the External Force Acting in the described adapter (2), inner core (3) one ends are the plug (31) with the surface that is covered by flexible material, take over (2) inwall and are provided with the back-up ring (22) that is sealed and matched with this plug (31) realization; Take on (2) inwall and be provided with a ring annular groove (24) near the inboard place of back-up ring (22), be formed with a chamber (38) in the inner core (3), chamber (38) is provided with opening (37) along the medium circulating direction, and inner core (3) sidewall is communicated with to form a through-flow channel (34) for the medium circulation with its chamber (38).

2. non-return meter connector according to claim 1 is characterized in that: described inner core (3) is communicated with its chamber (37) near the sidewall of plug (31) one ends, the through-flow channel (34) that circulates to form a confession medium.

3. non-return meter connector according to claim 2 is characterized in that: be evenly equipped with 4 through holes (35) on the close sidewall of plug (31) one ends of described inner core (3), through hole and chamber formation through-flow channel.

4. non-return meter connector according to claim 2, it is characterized in that: the outer surface of described plug (31) is hemispherical dome structure, back-up ring (22) is upper to be provided with the round table surface (221) that matches with hemispherical dome structure with plug (31) contacting point.

5. non-return meter connector according to claim 1 is characterized in that: described back-up ring (22) is located at adapter (2) near on the inner inwall.

6. non-return meter connector according to claim 1 is characterized in that: described back-up ring (22) is located at adapter (2) near on the inwall of outer end.

7. each described non-return meter connector according to claim 1-4 is characterized in that: the inwall of described adapter (2) is provided with one and stops that inner core shifts out the snap ring in taking over.

8. non-return meter connector according to claim 6 is characterized in that: be provided with vertically an annular section outside the described back-up ring (22).

9. non-return meter connector according to claim 7, it is characterized in that: the edge of described through hole (35) is provided with tangent plane along the medium circulating direction.