CN215258410U

CN215258410U - Anti-drop fluid connector for sealing ring

Info

Publication number: CN215258410U
Application number: CN202023319199.4U
Authority: CN
Inventors: 李中和; 蒋思思; 邹鑫琛
Original assignee: Jiangsu Yicheng Precision Device Technology Co ltd
Current assignee: Jiangsu Yicheng Precision Device Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-21
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a sealing washer anticreep type fluid coupling, including female plug, case and valve rod, the case, but the equal sliding connection of valve rod in female plug's inside, the valve rod includes the valve rod body and sets up respectively in the ring carrier at valve rod body both ends, the sealing ring, the ring carrier is equipped with a plurality of through-holes, the internal surface of female plug is equipped with inner ring groove one and inner ring groove two, inner ring groove one is equipped with sealing washer one, but ring carrier sliding connection in inner ring groove two, the internal surface of case is equipped with inner ring groove three, inner ring groove three is equipped with sealing washer two, be equipped with the spring that cup joints in the valve rod body between case and the ring carrier, the spring is used for driving valve core and sealing washer one to be connected and sealing ring and sealing washer two are connected. The utility model discloses a sealing washer second is installed at inside open-ended inner ring groove two, rather than installing in the surface of valve rod, like this when receiving pressure shock, can not make sealing washer two and the separation of inner ring groove two.

Description

Anti-drop fluid connector for sealing ring

Technical Field

The utility model relates to a sealing washer anticreep type fluid coupling belongs to fluid coupling technical field.

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.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model aims to provide a sealing washer anticreep type fluid coupling ware has solved among the prior art when fluid coupling ware pressure or flow are too big, the sealing washer easy damage, the technical problem who drops.

In order to achieve the above object, the utility model adopts the following technical scheme:

a sealing ring anti-drop fluid connector comprises a female plug, a valve core and a valve rod, wherein the valve core and the valve rod can be slidably connected inside the female plug, the valve rod comprises a valve rod body, annular supports and sealing rings, the annular supports and the sealing rings are respectively arranged at two ends of the valve rod body, a plurality of through holes are formed in the annular supports, an inner annular groove I and an inner annular groove II are formed in the inner surface of the female plug, the inner annular groove I is provided with the sealing ring I, the annular supports can be slidably connected to the inner annular groove II, an inner annular groove III is formed in the inner surface of the valve core, the inner annular groove III is provided with the sealing ring II, a spring sleeved on the valve rod body is arranged between the valve core and the annular supports, and the spring is used for driving the valve core to be connected with the sealing ring I and the sealing ring to be connected with the sealing ring II;

still be equipped with the pressure release section that the external diameter is less than the sealing ring and be greater than the valve rod body between valve rod body and the sealing ring, when being in the pressure release state, the position phase-match of pressure release section and sealing washer one.

Preferably, when the fluid connector is in a pressure relief state, the first sealing ring partially coincides with the axial position of the pressure relief section or is completely within the range of the pressure relief section.

Preferably, in the fluid connector with the anti-dropping seal ring, an outer convex ring is further disposed on the outer surface of the valve core, and the inner surface of the female plug is connected with the outer convex ring through an inner boss.

Preferably, in the fluid connector with a seal ring that is prevented from falling off, an end portion of the second inner ring groove is connected to an end portion of the annular bracket through a detachable retainer ring.

Preferably, the seal ring anti-drop fluid connector further comprises a flange connected to the outer surface of the female plug, a seal ring four is further arranged on the end face of the flange, and the flange and the seal ring four are used for connecting fluid equipment.

Preferably, in the fluid connector with the anti-dropping sealing ring, the flange is connected with the female plug through threads, and a third sealing ring is further arranged between the flange and the female plug.

Preferably, in the aforementioned fluid connector with a seal ring that prevents separation, both the first seal ring and the second seal ring are O-rings.

Preferably, in the aforementioned fluid connector with a seal ring to prevent falling off, the outer surface of the female plug is further provided with a pin shaft, and the pin shaft is connected to the female plug through a collar.

Preferably, in the fluid connector with the anti-dropping sealing ring, when the fluid connector is in a sealed state, the outer end of the annular bracket is connected with the check ring, and when the fluid connector is in a pressure relief state, the inner end of the annular bracket is connected with the end of the second inner annular groove.

The utility model discloses the beneficial effect who reaches:

compared with the prior art, the utility model discloses a second sealing washer is installed at inside open-ended inner ring groove two, and not install in the surface of valve rod, like this when receiving pressure shock, can not make second sealing washer and the separation of inner ring groove two.

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.

Drawings

Fig. 1 is a first axial sectional view (sealed state) of the present invention;

fig. 2 is a second axial sectional view (pressure relief state) of the present invention;

FIG. 3 is a connecting structure of the valve rod and the female plug of the present invention;

the meaning of the reference symbols in the figures: 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 III; 52-convex ring; 71-a ring-shaped support; 72-a via hole; 73-a sealing ring; 74-pressure relief section.

Detailed Description

The present invention will be further described 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 3: the embodiment discloses a sealing washer anticreep type fluid coupling, including female plug 1, case 5 and valve rod, the equal sliding connection of case 5, valve rod is in the inside of female plug 1, on above-mentioned basis, the valve rod of this embodiment includes valve rod body 7 and sets up respectively in ring carrier 71, the sealing ring 73 at valve rod body 7 both ends, and ring carrier 71 is equipped with a plurality of through-holes 72, and these through-holes 72 are used for passing through fluid. The inner surface of the female plug 1 is provided with a first inner ring groove 13 and a second inner ring groove 15, the first inner ring groove 13 is provided with a first sealing ring 2, the annular support 71 is slidably connected to the second inner ring groove 15, and the end part of the second inner ring groove 15 is connected with the end part of the annular support 71 through a detachable retainer ring 10. The length of the second inner annular groove 15 is larger than the axial width of the annular support 71, and the second inner annular groove is used for limiting the stroke of the valve rod. When the valve rod is in a sealing state, the outer end of the annular support 71 is connected with the check ring 10 under the action of the spring 8, 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), and 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.

An inner annular groove III 51 is formed in the inner surface of the valve core 5, a sealing ring II 3 is arranged in the inner annular groove III 51, a spring 8 sleeved on the valve rod body 7 is arranged between the valve core 5 and the annular support 71, the spring 8 is used for driving the valve core 5 to be connected with the sealing ring I2, and the sealing ring 73 is connected with the sealing ring II 3. The first sealing ring 2 and the second sealing ring 3 of the present embodiment are preferably O-ring seals.

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.

Furthermore, a pressure relief section 74 with an outer diameter smaller than that of the sealing ring 73 and larger than that of the valve rod body 7 is further arranged between the valve rod body 7 and the sealing ring 73, when the valve rod body is in a pressure relief state, the pressure relief section 74 is matched with the first sealing ring 2 in position, namely the pressure relief section 74 is located inside the first sealing ring 2, and therefore an annular pressure relief channel can be formed between the pressure relief section 74 and the first sealing ring 2. It can also be described as: when in a pressure relief state, the axial position of the seal ring one 2 and the pressure relief section 74 is partially overlapped or completely within the range of the pressure relief section 74 (the axial length of the pressure relief section 74 is generally larger than that of the seal ring one 2).

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.

The flange 11 is preferably connected with the female plug 1 through threads, and a third sealing ring 9 is further arranged between the flange 11 and the female plug 1.

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 to the left in the view direction of fig. 1, that is, in the view state of fig. 2, the fluid is discharged from the gap between the second sealing ring 3 and the pressure relief section 74, and since the second sealing ring 3 is located inside the third inner annular groove 51, when the second sealing ring 3 is impacted, the fluid is usually stretched or squeezed, and therefore, the fluid is not extruded from the third inner annular groove 51. Further, 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 the third 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 inner annular groove three 51 which is opened inwards, and is not installed on the outer surface of the valve rod, so that the second sealing ring 2 is not separated from the inner annular groove three 51 when the pressure impact is applied. On the other hand, since the outer diameter of the valve rod is increased in order along the direction of fluid discharge, the fluid is guided, and the impact force of the fluid has a component force on the sealing ring two 3, which enlarges the inner hole of the sealing ring two 3, so that the sealing ring two 3 is more reliably pressed on the inner annular groove three 51, and the sealing ring two 3 can be prevented from being scratched to a certain extent when a plug is inserted.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of 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.

Claims

1. A sealing ring anti-falling type fluid connector 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 sealing ring anti-falling type fluid connector is characterized in that 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 plurality of through holes (72) are formed in the annular supports (71), an inner annular groove I (13) and an inner annular groove II (15) are formed in the inner surface of the female plug (1), a sealing ring I (2) is arranged in the inner annular groove I (13), the annular supports (71) are connected to the inner annular groove II (15) in a sliding mode, an inner annular groove III (51) is formed in the inner surface of the valve core (5), a sealing ring II (3) is arranged in the inner annular groove III (51), and a spring (8) sleeved on the valve rod body (7) is arranged between the valve core (5) and the annular supports (71), the spring (8) is used for driving the valve plug (5) to be connected with the first sealing ring (2) and the sealing ring (73) to be connected with the second sealing ring (3);

still be equipped with pressure release section (74) that the external diameter is less than sealing ring (73) and is greater than valve rod body (7) between valve rod body (7) and sealing ring (73), when being in the pressure release state, pressure release section (74) and the position phase-match of sealing washer (2).

2. A seal ring release-proof fluid connector according to claim 1, wherein when in a pressure relief state, the axial position of the first seal ring (2) and the pressure relief section (74) is partially coincident or completely within the range of the pressure relief section (74).

3. The fluid connector of the type with a sealing ring which prevents the fluid from falling off as set forth in claim 1, wherein the outer surface of the valve core (5) is further 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 convex table (14).

4. The fluid connector of the type with a sealing ring which prevents the detachment according to claim 1, characterized in that the end of the second inner annular groove (15) is connected to the end of the annular support (71) by means of a removable collar (10).

5. A fluid connector with a seal ring for preventing a falling off is characterized by further comprising a flange (11) connected to the outer surface of the female plug (1), wherein a seal ring four (12) is further arranged on the end surface of the flange (11), and the flange (11) and the seal ring four (12) are used for connecting fluid equipment.

6. The fluid connector of the anti-drop seal ring type as claimed in claim 5, wherein the flange (11) is connected with the female plug (1) through threads, and a third seal ring (9) is arranged between the flange (11) and the female plug (1).

7. The fluid connector as claimed in claim 1, wherein the first and second seal rings (2, 3) are O-rings.

8. A fluid connector with a seal ring for preventing a falling off according to claim 1, wherein the outer surface of the female plug (1) is further provided with a pin (6), and the pin (6) is connected to the female plug (1) through a collar (4).

9. The fluid connector of the type with a sealing ring which is prevented from falling off as set forth in claim 4, characterized in that the outer end of the annular bracket (71) is connected with the retainer ring (10) when in the sealing state, and the inner end of the annular bracket (71) is connected with the end of the second inner annular groove (15) when in the pressure relief state.