阅读说明：本技术 一种带密封圈防护结构的流体连接器 (Fluid connector with sealing ring protection structure ) 是由 李中和 蒋思思 邹鑫琛 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种带密封圈防护结构的流体连接器：包括母插头、阀芯及阀杆,阀芯、阀杆均可滑动连接于母插头的内部,阀杆包括阀杆本体及分别设置于阀杆本体两端的环形支架、密封环,密封环与阀杆本体之间还设有多边形段,环形支架设有若干通孔；母插头的内表面设有内环槽一,内环槽一设有密封圈一；阀芯的内表面设有内环槽二,内环槽二设有密封圈二,阀芯与环形支架之间还设有用于驱动密封环连接密封圈二的弹簧,当处于泄压状态时,多边形段处于密封圈二的内孔。当受到压力冲击时,密封圈二不会与内环槽二分离。圆弧过渡角能够对密封圈二的内孔起到支撑作用,避免密封圈二彻底从内环槽二滑脱,同时不影响其泄压功能。(The invention discloses a fluid connector with a sealing ring protection structure, which comprises: the valve rod comprises a valve rod body, and annular supports and sealing rings which are respectively arranged at two ends of the valve rod body, wherein a polygonal section is also arranged between the sealing rings and the valve rod body, and the annular supports are provided with a plurality of through holes; the inner surface of the female plug is provided with a first inner ring groove, and the first inner ring groove is provided with a first sealing ring; the inner surface of the valve core is provided with a second inner ring groove, the second inner ring groove is provided with a second sealing ring, a spring for driving the sealing ring to be connected with the second sealing ring is further arranged between the valve core and the annular support, and when the valve core is in a pressure relief state, the polygonal section is located in an inner hole of the second sealing ring. When the pressure impact is applied, the second sealing ring is not separated from the second inner ring groove. The arc transition angle can play a supporting role in the inner hole of the second sealing ring, so that the second sealing ring is prevented from thoroughly slipping from the second inner ring groove, and the pressure relief function of the second sealing ring is not influenced.)

1. The utility model provides a take sealing washer protective structure's fluid coupling which characterized in that: the valve plug comprises a female plug (1), a valve core (5) and a valve rod, wherein the valve core (5) and the valve rod can be connected inside the female plug (1) in a sliding mode, the valve rod comprises a valve rod body (7), and annular supports (71) and sealing rings (73) which are arranged at two ends of the valve rod body (7) respectively, a polygonal section (74) is further arranged between the sealing rings (73) and the valve rod body (7), and a plurality of through holes (72) are formed in the annular supports (71);

an inner annular groove I (13) is formed in the inner surface of the female plug (1), and a sealing ring I (2) is arranged in the inner annular groove I (13);

an inner annular groove II (51) is formed in the inner surface of the valve core (5), a sealing ring II (3) is arranged in the inner annular groove II (51), a spring (8) used for driving the sealing ring (73) to be connected with the sealing ring II (3) is further arranged between the valve core (5) and the annular support (71), and when the valve core is in a pressure relief state, the polygonal section (74) is located in an inner hole of the sealing ring II (3).

2. The fluid connector with a gasket protection feature of claim 1, wherein: and an arc transition angle (741) is further arranged between adjacent surfaces in the polygonal section (74), and the distance between the arc transition angle (741) and the inner hole of the second sealing ring (3) in a natural state is smaller than the section outer diameter of the second sealing ring (3).

3. The fluid connector with a gasket protection feature of claim 1, wherein: the sealing ring (73) is connected to the polygonal section (74) by an arc-shaped bevel (731).

4. The fluid connector with a gasket protection feature of claim 1, wherein: the polygonal section (74) is connected to the valve stem body (7) by a transition spherical surface (742).

5. The fluid connector with a gasket protection feature of claim 1, wherein: the inner surface of the female plug (1) is connected to the annular support (71) through the second inner annular groove (15), the second inner annular groove (15) is provided with a detachable check ring (10), and the second inner annular groove (15) and the check ring (10) are used for limiting the stroke of the valve rod.

6. The fluid connector with a gasket protection feature of claim 1, wherein: the outer surface of the valve core (5) is also provided with an outer convex ring (52), and the inner surface of the female plug (1) is connected with the outer convex ring (52) through an inner boss (14).

7. The fluid connector with a gasket protection feature of claim 1, wherein: still including connecting in flange (11) of female plug (1) surface, the terminal surface of flange (11) still is equipped with sealing washer four (12), flange (11), sealing washer four (12) are used for connecting fluid equipment.

8. The fluid connector with a gasket protection feature of claim 1, wherein: the outer surface of the female plug (1) is further provided with a pin shaft (6), and the pin shaft (6) is connected to the female plug (1) through a clamping ring (4).

9. The fluid connector with a gasket protection feature of claim 1, wherein: and the first sealing ring (2) and the second sealing ring (3) are O-shaped sealing rings.

10. The fluid connector with a gasket protection feature of claim 1, wherein: the cross section of the polygonal section (74) is square with circular arc transition angles.

Technical Field

The invention relates to the technical field of fluid connectors, in particular to a fluid connector with a sealing ring protection structure.

Background

Fluid connectors are used to make quick connections and disconnections of fluid connections, and prior art fluid connectors are generally required to satisfy the function of self-sealing, i.e., to be able to seal automatically when a plug is unplugged. The patent number "2017203105822" discloses a self-discharging quick connector, but the connector has a problem that a sealing ring between a valve rod and a valve core is mounted on the valve rod inside, i.e. the sealing ring is sleeved in a sealing ring groove, and the sealing ring is deformed (such as the outer diameter is increased) when the sealing ring is subjected to larger pressure or flow, and then the sealing ring is possibly separated from the valve rod to cause sealing failure or even damage.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a fluid connector with a sealing ring protection structure, which solves the technical problem that a sealing ring is easy to damage and fall off when the pressure or the flow of the fluid connector is too large in the prior art.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a take sealing washer protective structure's fluid coupling which characterized in that: the valve rod comprises a valve rod body, and annular supports and sealing rings which are respectively arranged at two ends of the valve rod body, wherein a polygonal section is also arranged between the sealing rings and the valve rod body, and the annular supports are provided with a plurality of through holes;

the inner surface of the female plug is provided with a first inner ring groove, and the first inner ring groove is provided with a first sealing ring;

the inner surface of the valve core is provided with a second inner ring groove, the second inner ring groove is provided with a second sealing ring, a spring for driving the sealing ring to be connected with the second sealing ring is further arranged between the valve core and the annular support, and when the valve core is in a pressure relief state, the polygonal section is located in an inner hole of the second sealing ring.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: and an arc transition angle is also arranged between adjacent surfaces in the polygonal section, and the distance between the arc transition angle and the inner hole of the second sealing ring in a natural state is smaller than the section outer diameter of the second sealing ring.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the sealing ring is connected to the polygonal section through an arc bevel angle.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the polygonal section is connected to the valve rod body through a transition spherical surface.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the inner surface of the female plug is connected to the annular support through the second inner ring groove, the second inner ring groove is provided with a detachable check ring, and the second inner ring groove and the check ring are used for limiting the stroke of the valve rod.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the outer surface of the valve core is also provided with an outer convex ring, and the inner surface of the female plug is connected with the outer convex ring through an inner boss.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the plug is characterized by further comprising a flange connected to the outer surface of the female plug, wherein a sealing ring IV is further arranged on the end face of the flange, and the flange and the sealing ring IV are used for connecting fluid equipment.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the outer surface of the female plug is also provided with a pin shaft which is connected with the female plug through a clamping ring.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the first sealing ring and the second sealing ring are both O-shaped sealing rings.

As a preferred aspect of the present invention, the fluid connector with a seal ring protection structure comprises: the cross section of the polygonal section is a square with circular arc transition angles.

The invention achieves the following beneficial effects:

compared with the prior art, the second sealing ring is arranged on the inner annular groove II with the inward opening instead of the outer surface of the valve rod, so that the second sealing ring is not separated from the inner annular groove II when being impacted by pressure. On the other hand, the outer diameter of the valve rod is sequentially increased along the direction of fluid discharge, so that the fluid plays a role in guiding, the impact force of the fluid has a component force which enables the inner hole of the sealing ring II to be enlarged on the sealing ring II, the sealing ring II can be reliably extruded on the inner ring groove II, and the sealing ring II can be prevented from being scratched when a plug is inserted to a certain extent.

When the second sealing ring is about to slip from the second inner ring groove, the arc transition angle can support the inner hole of the second sealing ring, the second sealing ring is prevented from completely slipping from the second inner ring groove, meanwhile, a gap is still formed between the plane of the polygonal section and the inner hole of the second sealing ring, and the pressure relief function of the second sealing ring is not affected by the gap.

Drawings

FIG. 1 is a fragmentary view of the present invention (sealing condition);

FIG. 2 is a fragmentary view of the present invention showing a second state (a pressure relief state);

FIG. 3 is an enlarged fragmentary view of the valve stem of the present invention;

FIG. 4 is a cross-sectional view of a polygonal segment of the present invention;

the meaning of the reference numerals: 1-a female plug; 2, sealing ring one; 3-sealing ring II; 4-a collar; 5-valve core; 6-a pin shaft; 7-a valve stem body; 8-a spring; 9-sealing ring III; 10-a retainer ring; 11-a flange; 12-sealing ring four; 13-inner ring groove one; 14-inner boss; 15-inner ring groove two; 51-inner ring groove two; 52-convex ring; 71-a ring-shaped support; 72-a via hole; 73-a sealing ring; 74-polygonal segments; 731-arc bevel; 741-arc transition angle; 742-transition sphere.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 4: the embodiment discloses a fluid connector with a sealing ring protection structure: including female plug 1, case 5 and valve rod, the equal sliding connection of case 5, valve rod is in female plug 1's inside, and the valve rod includes valve rod body 7 and sets up respectively in ring carrier 71, the sealing ring 73 at valve rod body 7 both ends, still is equipped with polygon section 74 between sealing ring 73 and the valve rod body 7, and ring carrier 71 is equipped with a plurality of through-holes 72.

An inner annular groove I13 is formed in the inner surface of the female plug 1, and a sealing ring I2 is arranged in the inner annular groove I13.

The inner surface of the valve core 5 is provided with a second inner ring groove 51, the second inner ring groove 51 is provided with a second sealing ring 3, a spring 8 for driving the sealing ring 73 to be connected with the second sealing ring 3 is further arranged between the valve core 5 and the annular support 71, and when the valve core is in a pressure relief state, the polygonal section 74 is located in an inner hole of the second sealing ring 3.

An arc transition angle 741 is further arranged between adjacent surfaces in the polygonal section 74, and a distance between the arc transition angle 741 and an inner hole of the second sealing ring 3 in a natural state is smaller than the outer diameter of the cross section of the second sealing ring 3, the second sealing ring 3 in the natural state is the second sealing ring 3 which is not subjected to external force, so that the advantage that the second sealing ring 3 is prevented from slipping from the second inner annular groove 51 through the arc transition angle 741. The first sealing ring 2 and the second sealing ring 3 of the present embodiment are preferably O-ring seals.

The sealing ring 73 is connected to the polygonal section 74 by an arcuate bevel 731, and the polygonal section 74 is connected to the valve stem body 7 by a transition sphere 742. The arc oblique angle 731, the arc transition angle 741 and the transition spherical surface 742 all have the function of smoothing the polygonal section 74, so that the possibility of scratching the second sealing ring 3 is reduced. With reference to fig. 3 and 4: the polygonal section 74 of this embodiment is square in cross-section with rounded transition angles.

The internal surface of female plug 1 is connected in ring carrier 71 through two 15 inner ring grooves, and two 15 inner ring grooves are equipped with detachable retaining ring 10, and two 15 inner ring grooves, retaining ring 10 are used for limiting the stroke of valve rod, specifically as follows: when the valve is in a sealing state, under the action of the spring 8, the outer end of the annular support 71 is connected with the retainer ring 10, when the pressure is increased to a certain degree, the pressure pushes the valve rod to slide towards the direction of the valve core 5, when the sealing ring 73 is separated from the second sealing ring 3, namely, the pressure is released, when the pressure is continuously increased, the spring 8 is continuously compressed, the valve rod moves to the maximum state (the state shown in fig. 2), the inner end of the annular support 71 is connected with the end part of the second inner annular groove 15 and is used for limiting the stroke of the valve rod, in the state, the polygonal section 74 is positioned inside the second sealing ring 3, when the second sealing ring 3 slides from the second inner annular groove 51, the circular arc transition angle 741 can play a role in supporting the inner hole of the second sealing ring 3, so that the second sealing ring 3 is prevented from completely sliding from the second inner annular groove 51, and meanwhile, a, the gap does not affect its pressure relief function.

Under sealed condition, case 5 and sealing washer 2 cooperate and realize the sealed between case 5 and the female plug 1, because case 5 receives the thrust of spring 8, in order to restrict the stroke of case 5, need set up stop device between case 5 and female plug 1, specifically: the outer surface of the valve core 5 is also provided with an outer convex ring 52, the inner surface of the female plug 1 is connected with the outer convex ring 52 through the inner boss 14, and the limiting effect is realized in a mode that the outer convex ring 52 blocks the inner boss 14.

In order to facilitate the installation of the present embodiment, the present embodiment further includes a flange 11 connected to the outer surface of the female plug 1, a sealing ring four 12 is further disposed on an end surface of the flange 11, and the flange 11 and the sealing ring four 12 are used for connecting a fluid device.

In order to facilitate the connection of the plug (male plug), the outer surface of the female plug 1 of the present embodiment is further provided with a pin shaft 6, and the pin shaft 6 is connected to the female plug 1 through a retainer ring 4. The male plug matched with the male plug is connected with the female plug 1 through a corresponding clamping sleeve.

When the valve plug is used, the flange 11 is used for installing the embodiment in fluid equipment, and when the pressure is not enough to push the valve rod and the plug is not inserted, namely the state shown in fig. 1, the first sealing ring 2 and the second sealing ring 3 respectively realize the sealing between the female plug 1 and the valve core 5 and between the valve core 5 and the valve rod. When the pressure is increased to a certain state, the pressure pushes the valve rod to move towards the right in the view direction of fig. 1, namely, the view state of fig. 2, and fluid is discharged from the gap between the second sealing ring 3 and the polygonal section 74.

The second sealing ring 3 is located inside the second inner annular groove 51, and when the second sealing ring 3 is impacted, the second sealing ring is usually stretched or squeezed, so that the second sealing ring is not extruded from the second inner annular groove 51. Furthermore, since the outer diameter of the valve stem increases in the order of the direction in which the fluid is discharged, the fluid is guided, and the impact force of the fluid has a component force that increases the inner hole of the second seal 3 to the second seal 3, so that the second seal 3 is more reliably pressed against only the second inner ring groove 51.

When the plug is inserted, the plug pushes the valve core 5 towards the direction of the annular support 71, and the outer surface of the plug is sealed with the second sealing ring 3. When the plug is pulled out, the spring 8 pushes the valve core 5 to reset, self-sealing is realized, and hot plugging is realized.

Compared with the prior art, the second sealing ring 2 of the present embodiment is installed in the second inner annular groove 51 which is opened inwards, rather than being installed on the outer surface of the valve stem, so that the second sealing ring 2 is not separated from the second inner annular groove 51 when the pressure impact is applied. On the other hand, since the outer diameter of the valve rod is increased in sequence along the direction of fluid discharge, the fluid is guided, and the impact force of the fluid has a component force which enlarges the inner hole of the sealing ring II 3 on the sealing ring II 3, so that the sealing ring II 3 is only more reliably pressed on the inner ring groove II 51, and the sealing ring II 3 can be prevented from being scratched to a certain extent when a plug is inserted.

When the second sealing ring 3 slips from the second inner annular groove 51, the arc transition angle 741 can support the inner hole, so that the second sealing ring 3 is prevented from completely slipping from the second inner annular groove 51, and meanwhile, a gap is still formed between the plane of the polygonal section 74 and the inner hole of the second sealing ring 3, and the pressure relief function of the gap is not affected by the gap.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.