CN108317324A - Quick coupling - Google Patents

Abstract

The present invention relates to a kind of attachment device of fast assembling-disassembling, especially quick couplings.Quick coupling, including male contact and famale connector, male contact includes plug, plug connector rear outer wall is arranged with plug connector body, it is fixed with valve seat A in the middle part of plug inner wall, plug front is equipped with bayonet A, outer wall is equipped with back stop slot on rear side of bayonet A, spool A is equipped in bayonet A, valve core rod A is equipped in spool A, valve core case A is equipped with after valve core rod A, famale connector includes shell and housing, rear outer wall is arranged with shell joint body, shell and the external wall of shell joint are cased with housing, inner walls rear portion is fixed with valve seat B, inner walls convex to form bayonet B to center position, spool B is equipped in bayonet B, valve core rod B is equipped in spool B, valve core case B is equipped with after valve core rod B, shell front hollow out is equipped with steel ball, steel ball is connect with housing.Usefulness of the present invention：Structure novel, it is ingenious in design simple, it is suitable for band press operation.

Description

Quick Connector

technical field

The invention relates to a quick disassembly connecting device, especially a quick connector.

Background technique

Quick connectors include hydraulic quick connectors and various fluid quick connectors. It is a connection device that quickly connects or disconnects pipelines and realizes quick disassembly. Because the quick connector has a two-way check function and the pipeline is disconnected without leakage, it is widely used in the fields of petroleum, metallurgy, hydropower, construction machinery, ships, and electromechanical equipment. The connection structure of the quick connector is the most important part of the quick connector. Its connection method and structure directly determine the convenience, reliability and product quality of the quick connector. The quick connector consists of two parts, a female connector and a male connector. The existing quick connector is connected by a group of steel balls uniformly distributed on the circumference of the female connector body, and the size of the center of the uniformly distributed steel balls on the circumference of the female connector body is changed by the movement of the jacket lock, and the locking or Withdraw the nipple. When the male connector needs to be inserted into the female connector, push the jacket lock to push the male connector into the female connector, release the jacket after the male connector is inserted, the jacket returns to the original position through the internal spring to lock the male connector, and the pipeline is connected. When the male joint needs to be withdrawn, push the outer cover lock of the female joint to make the center of the steel balls at all parts reach the maximum, and the male joint withdraws and the pipeline is disconnected. For situations that require pressurized operation, some products have complex structures and high manufacturing costs, which may affect the use effect and safety of quick connectors.

Contents of the invention

In order to solve the technical problem of the above-mentioned complex structure of the pressurized operation, the present invention provides a quick connector.

Technical scheme of the present invention is as follows:

The quick connector includes a male connector and a female connector. The male connector includes a plug. The outer wall of the rear part of the plug is covered with a plug connector body. The middle part of the inner wall of the plug is fixed with a valve seat A. There is a non-retraction groove on the outer wall, a spool A is set in the bayonet A, a spool rod A is set in the spool A, the spool rod A protrudes from the spool A, and a spool seat A is set behind the spool rod A , a spool spring A is provided between the spool seat A and the valve seat A, the front of the spool A protrudes, the female joint includes a shell and an outer jacket, the outer wall of the rear of the shell is covered with a shell joint body, the shell and The outer wall of the housing joint is covered with a jacket, the rear part of the inner wall of the housing is fixed with a valve seat B, and the inner wall of the housing protrudes toward the center to form a bayonet B. The bayonet B is provided with a valve core B, and the valve core B is provided with a The spool rod B, the spool rod B protrudes from the spool B, the spool seat B is arranged behind the spool rod B, the spool spring B is arranged between the spool seat B and the valve seat B, and the front part of the spool B Protruding, steel balls are hollowed out at the front of the shell, and the steel balls are connected with the jacket.

A joint body O-ring A and a joint body O-ring B are provided between the contact ends of the plug and the plug joint body, and a joint body O-ring C and a joint body O-ring C and a joint body are provided between the housing and the contact ends of the housing joint body. O-ring D.

The front part of the plug joint body and the housing joint body are large and the rear part is small. The outer wall of the front part of the plug is sunken inwards, and the back is a backstop groove. The outer wall of the rear part of the plug is provided with a bump fixed with the plug connector body.

The valve seat A, the valve seat B, the valve core seat A, and the valve core seat B are triangular valves, the cross section of the inner wall of the valve seat A and the valve seat B is at right angles, and the outer wall of the rear part of the valve core A is in contact with the inner wall of the valve seat A. The outer wall of the spool A is in sealing contact with the bayonet A. The outer wall of the spool A is provided with a spool O-ring A. The center of the spool A is hollow, and the end surface is recessed from top to bottom to form a gap. The inner wall of the spool B is in contact with the bayonet B. The outer wall of the spool B is provided with a spool O-ring B. The center of the spool B is hollow. The diameter of the core B head becomes larger from front to back.

The valve core rod A and the valve core rod B are rod A, rod B, connecting body and rod C from front to back, the diameter of rod A is larger than rod B, and the connecting body is round platform A, cylinder A, round platform B and Connector of cylinder B.

The inner wall of the front part of the jacket is provided with a steel ball groove A and a steel ball groove B, the steel ball groove A and the steel ball groove B are located on both sides of the steel ball connection position, the depressions are connected by an inclined plane, and the inner wall of the rear part of the jacket is provided with a spring groove A, The casing is provided with a spring groove B, and the length of the notch of the spring groove A and the spring groove B is the same, and the spring groove A and the spring groove B are placed with the outer spring.

Using the technical solution of the present invention, the structure is novel, the design is ingenious and simple, and it is suitable for operation under pressure. The plug is inserted, and the valve core rod A is in front. , easy to operate, and then the spool rod A is flush with the spool A, pushing the spool B together, which is very effective in resisting the impact of high-speed fluid and relieving the impact of pulse pressure, improving the performance parameters of the quick connector; easy to process, The connection is convenient and fast, the strength is high, and the resistance is good. The working pressure can reach 35MPa, and the high temperature can reach -40°C to 200°C; the number of plugging and unplugging can reach 500,000 times.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of a female joint in the present invention;

Fig. 3 is the structural representation of male joint in the present invention;

Fig. 4 is a structural schematic diagram of the top ends of valve core A and valve core B in the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Example

The quick connector shown in Figures 1, 2, 3 and 4 includes a male connector and a female connector, the male connector includes a plug 2, the rear outer wall of the plug 2 is provided with a plug connector body 15, and the middle part of the inner wall of the plug 2 is fixed with a valve seat A5, the valve seat retaining ring A11 is provided at the connection, the bayonet A26 is provided at the front of the plug 2, the rear outer wall of the bayonet A26 is provided with a back-stop groove, the valve core A4 is provided in the bayonet A26, and the valve core A4 is provided with The spool rod A17, the spool rod A17 protrudes from the spool A4, the spool seat A18 is arranged behind the spool rod A17, the spool spring A12 is arranged between the spool seat A18 and the valve seat A5, and the front part of the spool A4 The female joint includes a housing 1 and an outer casing 3, the outer wall of the rear part of the housing 1 is provided with a housing joint body 14, the outer wall of the housing 1 and the housing joint body 14 is covered with an outer sleeve 3, and the rear part of the inner wall of the housing 1 is fixed There is a valve seat B30, a valve seat retaining ring B21 is provided at the connection, the inner wall of the housing 1 protrudes toward the center to form a bayonet B27, a valve core B24 is provided in the bayonet B27, and a valve core rod B25 is provided in the valve core B24 , the spool rod B25 protrudes from the spool B24, the spool seat B23 is arranged behind the spool rod B25, the spool spring B22 is arranged between the spool seat B23 and the valve seat B30, the front part of the spool B24 is raised, and the shell The front part of the body 1 is hollowed out to be provided with steel balls 8, and the steel balls 8 are connected with the jacket 3.

A joint body O-ring A10 and a joint body O-ring B16 are provided between the contact ends of the plug 2 and the plug joint body 15, and a joint body O-ring is provided between the contact ends of the housing 1 and the housing joint body 14 C20 and connector body O-ring D21.

The plug connector body 15 and the housing connector body 14 have a large front part and a small rear part, and the joint between the front part and the rear part is in a right-angle shape. Large, the outer wall of the front part of the plug 2 is sunken inwards, and the rear is a backstop groove. The outer wall of the rear part of the plug 2 is provided with a bump fixed with the plug connector body 15. smooth.

The valve seat A5, the valve seat B30, the valve core seat A18, and the valve core seat B23 are triangular valves, the valve seat A5 and the valve seat B30 inner wall cross section are at right angles, and the valve core A4 rear outer wall is in contact with the valve seat A5 inner wall, The outer wall of the valve core A4 is in sealing contact with the bayonet A26. The outer wall of the valve core A4 is provided with a valve core O-ring A32. The inner wall of B30 is in contact, and the outer wall of the spool B24 is in sealing contact with the bayonet B27. The outer wall of the spool B24 is provided with a spool O-ring B13 for sealing. The center of the spool B24 is hollow, and the end surface is recessed from top to bottom to form a gap. The diameter of the head of A4 and spool B24 becomes larger from front to back.

Described spool rod A17 and spool rod B25 are rod A, rod B, connecting body and rod C from front to back, and the diameter of rod A is greater than rod B, and connecting body is round platform A, cylinder A, round platform B and Connector of cylinder B. The diameter of rod A is larger than that of rod B in order to increase the flow channel area. There is a plug spool sleeve O-ring A19 between the connecting body and the spool B24, and a plug spool sleeve O-ring is set between the connecting body and the spool A4. Circle B31, sealing function.

The inner wall of the front part of the outer cover 3 is provided with a steel ball groove A28 and a steel ball groove B29, the steel ball groove A28 and the steel ball groove B29 are located on both sides of the steel ball 8 connection position, the depressions are connected by an inclined plane, and the inner wall of the outer cover 3 rear part is provided with a spring Slot A, the housing 1 is provided with a spring slot B, the length of the slots of the spring slot A and the spring slot B is the same, and the spring slot A and the spring slot B are placed with the outer spring 9. The connection position of the steel ball 8 bears the steel ball 8. When it is necessary to move, the spring groove A and the spring groove B are used to accommodate the steel ball 8, both front and rear can be used. The depression is connected by an inclined plane, and the speed of entering the groove is fast. Without an inclined plane, more distance is required. , Spring slot A and spring slot B are suitable for push-pull type, fast, and the outer spring 9 is on the two slots.

When in use, the outer inner wall of the bayonet B27 is provided with a housing O-ring 6 and a housing plastic king 7. The plug 2 is inserted, and the valve core rod A17 is in front. First, the valve core rod B25 is pushed to partially relieve pressure. Because the pressure is small and easy to operate, then the spool rod A17 is flush with the spool A4, and they push the spool B24 together, and the end surface is recessed from top to bottom to form a gap, which serves to store fluid, and the valve core rod A17 and the valve The core A4 flows through the gap. If there is no such gap, the flow rate is very small and the effect is not good until the steel ball 8 locks the anti-retraction groove and is away from the bayonet A26 and the bayonet B27 respectively. The front cross sections of the valve core A4 and the valve core B24 are The arc shape is convenient for the smooth flow path and fast flow rate. It comes out through the valve seat B30, and the triangular valve triangles are evenly circulated. The flow area is large and the flow path is opened.

It should be understood that the above descriptions are only preferred embodiments of the present invention, and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, they can Additions, substitutions, transformations or improvements are described, and all technical solutions after such additions, substitutions, transformations or improvements shall belong to the protection scope of the appended claims of the present invention.

Claims (6)

1. quick coupling, including male contact and famale connector, it is characterised in that：Male contact includes plug（2）, plug（2）Outside rear portion Wall is arranged with plug connector body（15）, plug（2）It is fixed with valve seat A in the middle part of inner wall（5）, plug（2）Front is equipped with bayonet A （26）, bayonet A（26）Rear side outer wall is equipped with back stop slot, bayonet A（26）In be equipped with spool A（4）, spool A（4）In be equipped with valve core rod A（17）, valve core rod A（17）From spool A（4）It stretches, valve core rod A（17）It is equipped with valve core case A afterwards（18）, valve core case A（18）With Valve seat A（5）Between be equipped with valve core spring A（12）, spool A（4）Front protrusion, famale connector includes shell（1）And housing（3）, shell Body（1）Rear portion outer wall is arranged with shell joint body（14）, shell（1）With shell joint body（14）Outer wall is cased with housing（3）, shell （1）Back interior wall is fixed with valve seat B（30）, shell（1）Inner wall convexes to form bayonet B to center position（27）, bayonet B（27） In be equipped with spool B（24）, spool B（24）In be equipped with valve core rod B（25）, valve core rod B（25）From spool B（24）It stretches, spool Bar B（25）It is equipped with valve core case B afterwards（23）, valve core case B（23）With valve seat B（30）Between be equipped with valve core spring B（22）, spool B （24）Front protrusion, shell（1）Front hollow out is equipped with steel ball（8）, steel ball（8）With housing（3）Connection.

2. quick coupling according to claim 1, it is characterised in that：The plug（2）With plug connector body（15）Contact Fittings body O-ring A is set between both ends（10）With fittings body O-ring B（16）, shell（1）With shell joint body（14）Contact both ends Between be equipped with fittings body O-ring C（20）With fittings body O-ring D（21）.

3. quick coupling according to claim 1, it is characterised in that：The plug connector body（15）With shell joint body （14）The big rear portion in front is small, the rectangular shape in junction of front and rear, and front outer wall is equipped with notch, and front inner wall is smooth, after Portion's inner diameter is inner small and outside big, plug（2）Front outer wall is recessed inwardly, and rear is back stop slot, plug（2）Rear portion outer wall be equipped with Plug connector body（15）Fixed convex block, plug（2）Bayonet A（26）Big outer small, bayonet A in bore（26）Rear side interior walls be smooth.

4. quick coupling according to claim 1, it is characterised in that：The valve seat A（5）, valve seat B（30）, valve core case A （18）, valve core case B（23）For triangle vavle, valve seat A（5）With valve seat B（30）The rectangular shape of cross section of inboard wall, spool A（4）Rear portion Outer wall and valve seat A（5）Inner wall contacts, spool A（4）Outer wall and bayonet A（26）It is in sealing contact, spool A（4）Outer wall is equipped with spool O Type circle A（32）, spool A（4）Center hollow, end face are recessed inwardly to form notch from top to bottom, spool B（24）Rear portion outer wall and valve Seat B（30）Inner wall contacts, spool B（24）Outer wall and bayonet B（27）It is in sealing contact, spool B（24）Outer wall is equipped with spool O-ring B （13）, spool B（24）Center hollow, end face are recessed inwardly to form notch from top to bottom, spool A（4）With spool B（24）Head Diameter becomes larger from front to back.

5. quick coupling according to claim 1, it is characterised in that：The valve core rod A（17）With valve core rod B（25）In the past It is bar A, bar B, connector and bar C after arriving, the diameter of bar A is more than bar B, and connector is round platform A, cylinder A, round platform B from front to back With the connector of cylinder B.

6. quick coupling according to claim 1, it is characterised in that：The housing（3）Front inner wall is equipped with steel ball groove A （28）With steel ball groove B（29）, steel ball groove A（28）With steel ball groove B（29）Positioned at steel ball（8）The both sides of link position, it is recessed It falls into and sentences inclined-plane connection, housing（3）Rear inside wall is equipped with spring groove A, shell（1）Equipped with spring groove B, spring groove A and spring groove B Notch length is consistent, and spring groove A and spring groove B place outer casing spring（9）.