CN103148300A - Quick inserting and drawing connector - Google Patents

Abstract

The invention discloses a quick inserting and drawing connector. The quick inserting and drawing connector comprises an internal valve connector and an external valve connector which is in butt joint with the internal valve connector, wherein the internal valve connector and the external valve connector are both hollow cylinder bodies, the middle part of the internal valve connector is provided with a stop spring valve core, the axle center of the external valve connector is also provided with a stop spring valve plug, and the quick inserting and drawing connector can be switched on due to mutual pressing of the spring valve core and the spring valve plug; the interval valve connector and the external valve connector are connected through a clamping and locking device which is arranged at the connecting position of the internal valve connector and the external valve connector; and the clamping and locking device comprises a screwing-off sleeve, an elastic top sleeve and a moon-shaped key, the screwing-off sleeve is flexibly sleeved at the connecting position of the external valve connector, and the elastic top sleeve is flexibly sleeved at the connecting position of the internal valve connector. According to the quick inserting and drawing connector provided by the invention, the external valve connector and the internal valve connector are respectively in a self-sealing state when the quick inserting and drawing connector is in a switching-off state; and butt-joint positions of the internal valve connector and the external valve connector are subjected to self locking by adopting a key connection limiting mode, the screw-off sleeve and the elastic top sleeve are utilized for matching with the moon-shaped key, quick butt joint can be carried out, and the sealing performance of the quick inserting and drawing connector can be ensured.

Description

A quick plug connector

technical field

The invention relates to the field of mechanical connections, in particular to a quick plug-in connector.

Background technique

  In hydraulic pipelines or water pipelines, it is often encountered that the zero-time pipelines are connected. During the zero-time connection or zero-time disconnection of the pipeline, how to ensure the sealing degree of the pipeline and optimize the connection method of the connecting joint is a technical problem. In the existing technical field, this type of zero-time joint or quick-installation joint cannot take into account the effects of instant cut-off and fast clamping. Moreover, the clamping method is relatively traditional, and the method of screw connection is mostly used, but in the actual operation process, the pipelines cannot be connected in time and quickly.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a quick plug-in joint, which has a reasonable design and a simple structure, and can not only ensure the tightness of the pipeline but also quickly complete the connection during the pipeline butt joint process.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is to provide a quick plug-in joint, including: an inner valve joint and an outer valve joint docked with it, the inner valve joint and the outer valve joint are both hollow cylinders, There is a flow-stopping spring spool in the middle of the inner valve joint, and the same flow-stopping spring valve plug is set on the axis of the outer valve joint. The inner valve joint and the outer valve joint are connected through the locking device at their connection; the locking device includes: a shackle sleeve, a spring top sleeve and a moon key; the shackle sleeve is flexibly placed on the joint of the outer valve joint, and the spring The top sleeve is flexibly placed on the joint of the inner valve joint.

Preferably, an axial spring is provided in the cavity of the spring top sleeve, and the axial spring is supported on the shaft shoulder at the connection of the inner valve joint; .

Preferably, a through groove is provided on the outer wall of the connecting part of the outer valve joint; the moon-shaped key is placed in the through groove; the shackle sleeve outside the outer valve joint can radially limit the moon-shaped key.

Preferably, a notch is provided on the outer wall of the connection of the inner valve joint, and the position of the notch corresponds to the position of the through groove on the outer valve joint; the notch can be matched with the crescent key.

Preferably, the diameter of the inner wall at the contact position of the shackle sleeve and the moon key gradually changes.

Preferably, the moon-shaped key is formed by connecting two connecting keys opposite to each other through an arc-shaped elastic piece.

The beneficial effects of the present invention are: to provide a quick plug connector, when the quick plug connector is disconnected, the outer valve connector and the inner valve connector are in an automatic sealing state respectively. When docking, it will automatically penetrate, and the cooperation is precise, stable and reliable. The butt joints of the inner and outer valve heads are self-locked by means of key connections, and the use of shackle sleeves and spring top sleeves with moon-shaped keys can quickly butt joints and ensure their sealing performance.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a quick plug connector of the present invention;

Fig. 2 is a sectional structural schematic diagram of an outer valve joint equipped with a shackle sleeve;

Fig. 3 is the cross-sectional structure schematic diagram of the internal valve joint that is equipped with the top sleeve;

Fig. 4 is the structural representation of moon-shaped key;

The marks of each part in the attached drawings are as follows: 1. Locking device; 2. Outer valve joint; 3. Inner valve joint; 11. Shackle sleeve; 12. Spring top sleeve; 13. Moon-shaped key; 14. Axial spring ;

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to accompanying drawing 1 to Fig. 4, the embodiment of the present invention comprises:

A quick plug-in joint, comprising: an inner valve joint 3 and an outer valve joint 2 docked with it, the inner valve joint 3 is provided with a spring valve core 31, and the spring valve core is pressed against the flow valve under the action of a return spring 33 At the crossing, the inner valve joint stops the flow; the outer valve joint 2 axis is provided with a spring valve plug 21, and the spring valve plug is pressed against the runner mouth by elastic force, and the outer valve joint is blocked; the three-leaf valve at the end of the spring valve core 31 The flap 33 and the spring valve plug 21 press against each other, so that a gap is formed between the spring valve core 31 and the closed flow channel opening; the spring valve plug 21 also produces a gap with the closed flow channel opening, so that the central flow channel in the joint is connected; the inner valve The joint 3 and the outer valve joint 2 are connected by a locking device 1; the locking device 1 includes: a shackle sleeve 11, a pop-up sleeve 12 and a moon-shaped key 13; the shackle sleeve is flexibly placed on the joint of the outer valve joint, The spring top sleeve is flexibly placed on the joint of the inner valve joint.

An axial spring 14 is arranged in the cavity of the spring top sleeve 12, and the axial spring is supported on the shaft shoulder at the joint of the inner valve joint 3; to the spring. The moon-shaped key 13 is formed by connecting two connecting keys 131 with opposite working surfaces through an arc-shaped elastic piece 132 . The outer wall of the joint of the outer valve joint 2 is provided with a through groove; the moon-shaped key is placed in the through groove; the outer wall of the joint of the inner valve joint 3 is provided with a notch groove 35, and the position of the notch groove is consistent with the position of the joint. The position of the through groove on the outer valve joint is corresponding; the notch groove 35 can cooperate with the moon-shaped key 13; the shackle sleeve 11 outside the outer valve joint can limit the radial position of the moon-shaped key 13, and the shackle The diameter of the inner wall at the contact position between the sleeve and the moon-shaped key gradually decreases from outside to inside.

During use, the inner valve joint 3 and the outer valve joint 2 are butt-connected, and the spring valve plug 21 in the outer valve joint and the spring spool 31 in the inner valve joint press against each other, so that the entire flow channel is connected. At this time, the moon-shaped key 13 on the outer valve joint is just stuck on the notch groove 35 of the inner valve joint, and the shackle sleeve 11 blocks the moon-shaped key 13 under the action of the spring top sleeve 12, so that the moon-shaped key radially limit. In this way, the inner valve joint 3 and the outer valve joint 2 are tightly connected and will not be loosened. When it is necessary to disconnect the joint, you only need to quickly move the shackle buckle 11 to the right. Due to the change of the diameter of the inner wall of the shackle, the limit ability of the shackle to the moon-shaped key 13 is weakened, and the moon-shaped key is under the action of its own elastic force. The moon-shaped key 13 is disengaged from the notch groove 35, so that the inner and outer valve joints are separated, and the spring valve plug 21 inside the outer valve joint and the spring spool 31 of the inner valve joint are under the action of their respective spring forces. Reset, and keep the flow channel sealed by the sealing ring, and the fluid pipeline is disconnected.

The invention provides a quick plug-in joint. When the quick-plug joint is in a disconnected state, the outer valve joint and the inner valve joint are respectively in an automatic sealing state. When docking, it will automatically penetrate, and the cooperation is precise, stable and reliable. The butt joints of the inner and outer valve heads are self-locked in the way of key connection, and the outer valve joint and the inner valve joint are fixed by using the shackle sleeve and the spring top sleeve with the moon key and the moon key, so as to realize fast Docking, and guarantee its sealing performance. the

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the content of the description of the present invention, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.

Claims (6)

1. fast insert-pull joint, comprise: interior valve joint (3) and the outer valve joint (2) that docks with it, described interior valve joint (3) is hollow cylinder with outer valve joint (2), be provided with the spring spool (31) of fluid stopping in the middle of interior valve joint (3), outer valve joint (2) axle center is provided with the spring valve plug (21) of fluid stopping; It is characterized in that: described spring spool (31) is pressed perforation in the top mutually with spring valve plug (21); Described interior valve joint (3) and the locking device connection (1) of outer valve joint (2) by their joints; Described locking device (1) comprising: shackle casing (11), bullet top cover (12) and month shape key (13); Shackle casing is placed in the joint of outer valve joint, plays the joint that top cover is placed in interior valve joint.

2. a kind of fast insert-pull joint according to claim 1, it is characterized in that: be provided with axle spring (14) in described bullet top cover (12) inner chamber, axle spring is supported on the shaft shoulder of interior valve joint (3) joint; Described shackle casing (11) also is provided with axle spring with outer valve joint (2) cooperation place.

3. a kind of fast insert-pull joint according to claim 1 is characterized in that: the outer wall of described outer valve joint (2) joint is provided with groove; Described moon shape key (13) is placed in groove; The outer shackle casing (11) of described outer valve joint can to the moon shape key radially spacing.

4. a kind of fast insert-pull joint according to claim 1 is characterized in that: the outer wall of described interior valve joint (3) joint is provided with gap slot (35), and on the position of gap slot and described outer valve joint, the groove position is corresponding; Described gap slot can coordinate with moon shape key (13).

5. a kind of fast insert-pull joint according to claim 3 is characterized in that: described shackle casing (11) and month inner diameter of shape key (13) contact position be alternation gradually.

6. a kind of fast insert-pull joint according to claim 1 is characterized in that: described month the shape key (13) be formed by connecting by arc elastic sheet (132) by relative two connecting keys (131) of working surface.

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