CN213292724U

CN213292724U - Double-sealing quick-release self-sealing valve

Info

Publication number: CN213292724U
Application number: CN202022384753.0U
Authority: CN
Inventors: 王贤涛; 江晓宇; 吴显; 冉龙明
Original assignee: Yibin Sanjiang Machinery Co Ltd
Current assignee: Yibin Sanjiang Machinery Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-05-28
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses a double-sealing quick-release self-sealing valve, which relates to the technical field of oil tanks and comprises a joint positioned on or connected with an equipment body and a dustproof cover arranged at the outlet end of the joint and provided with a sealing cover; the connector is internally provided with a plugging structure capable of automatically plugging the connector. The utility model discloses a cooperation is sealed jointly in two places, makes leakproofness, reliability and the quality of product improve greatly.

Description

Double-sealing quick-release self-sealing valve

Technical Field

The utility model relates to an oil tank technical field particularly, relates to a valve is proclaimed oneself to double containment quick-release.

Background

At present, the fuel tanks of various domestic airplanes are all provided with quick-release self-sealing valves for ground refueling, oil drainage and sampling. At present, valve sealing pairs used by most of quick-release self-sealing valves are common O-shaped sealing ring sealing pairs, and when the sealing pairs are in butt joint work or valve action, abrasion can occur along with increase of use times, so that the sealing performance can be reduced or lost, and finally, a fuel oil tank medium is leaked to cause aircraft potential safety hazards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve is proclaimed oneself in double containment quick-release, through the cooperation of two common seals, makes leakproofness, reliability and the quality of product improve greatly.

For realizing the purpose of the utility model, the technical proposal adopted is that: a double-seal quick-release self-sealing valve comprises a joint positioned on or connected with an equipment body and a dustproof cover with a sealing cover arranged at the outlet end of the joint; the connector is internally provided with a plugging structure capable of automatically plugging the connector.

Furthermore, the outlet end that connects is hourglass hopper-shaped, and plugging structure includes with the stopper head of connecting the outlet end complex and support the spring one of tight stopper head.

Furthermore, a sealing ring is further installed on the inner wall of the outlet end of the joint.

Furthermore, a mounting cavity is formed inside the connector, a guide sleeve is mounted in the mounting cavity, a groove is formed in one end, close to the plugging head, of the guide sleeve, and the rear end of the first spring abuts against the groove tightly.

Furthermore, the plugging head is further provided with a positioning rod, the spring is sleeved on the positioning rod, the positioning rod is slidably inserted in the guide sleeve, and one end of the guide sleeve, which is far away from the plugging head, is further provided with a notch avoiding the inlet end of the connector.

Further, the inner diameter of the inlet end of the joint is larger than the diameter of the positioning rod.

Furthermore, the dustproof cover comprises an inner cover, and a sealing seat abutting against the end face of the joint is installed in the inner cover.

Furthermore, the joint end face is provided with a raised lip edge, and a sealing ring matched with the lip edge is arranged on the sealing seat.

Furthermore, a second spring is further installed in the inner cover and abuts against and is tightly pressed between the sealing seat and the cover surface of the inner cover.

Furthermore, a first check ring for preventing the sealing seat from being separated is further arranged on the inner wall of the inner cover.

Furthermore, the circumferential surface of the inner cover is also provided with an installation groove, and a rolling steel ball is installed in the installation groove; the inner cup still overlaps outward and is equipped with the overcoat that can slide relatively, and the overcoat inner wall still has the bulge loop that corresponds with the steel ball, and bulge loop one side has the toper guide face of guide steel ball.

Further, the mounting groove is a plurality of, and a plurality of mounting grooves are arranged along the even interval of periphery of inner cup, and all install the steel ball in every mounting groove.

Furthermore, the inner cover is provided with a cover edge, the outer wall of the inner cover is further sleeved with a third spring, two ends of the third spring are respectively abutted against the cover edge and the convex ring, and the inner cover or the outer sleeve is further provided with a second check ring for limiting the outer sleeve to excessively move forwards.

Furthermore, a connecting rope is connected between the joint and the dust cover.

The utility model has the advantages that,

the utility model discloses a common exit end of butt joint of block structure and shield carries out the shutoff, compares traditional quick-release and proclaims oneself the joint, the utility model discloses when abnormal conditions appears in block structure, the shield still can seal the oil tank to effectively prevent the oil tank oil leak, can not only avoid causing the influence to aircraft flight safety, and effectively improve the sealing performance and the security performance of oil tank.

And simultaneously, the utility model discloses compact structure, reliable and stable, and do not need use tools in the use, it is more simple and convenient to operate.

Drawings

FIG. 1 is a structural diagram of the double-sealing quick-release self-sealing valve provided by the present invention;

FIG. 2 is a block diagram of the dust cap of FIG. 1;

fig. 3 is a partially enlarged view of a portion a in fig. 1.

Reference numbers and corresponding part names in the drawings:

1. the device comprises a connector 2, a plugging structure 3, a dustproof cover 4, an installation cavity 5 and a connecting rope;

200. the sealing device comprises a sealing head 201, a first spring 202, a sealing ring 203, a guide sleeve 204, a groove 205, a positioning rod 206 and a notch;

300. the inner cover 301, the sealing seat 302, the lip edge 303, the sealing ring 304, the spring II 305, the retainer ring I306, the mounting groove 307, the steel ball 308, the outer sleeve 309, the convex ring 310, the conical guide surface 311, the cover edge 312, the spring III 313 and the retainer ring II.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

As shown in fig. 1, the dual-seal quick-release self-sealing valve provided by the present invention comprises a joint 1 located on or connected to an equipment body, the equipment body in the present invention is an oil tank, and the joint 1 can be fixed on the oil tank body by means of integral molding or welding; the automatic oil tank sealing device is characterized in that a sealing structure 2 capable of automatically sealing a connector 1 is arranged in the connector 1, when the connector 1 is not required to be opened, the sealing structure 2 seals the connector 1, so that an oil tank is in a sealing state, and when the connector 1 is required to be opened, the sealing structure 2 can automatically open the connector 1, so that the oil tank is in an opening state.

The exit end that connects 1 still seals the lid and is equipped with shield 3, and shield 3 covers and establishes at the exit end that connects 1, can not only prevent effectively that external dust from getting into to connect 1 in, and can further seal joint 1, makes the closed effect that connects 1 better, makes the leakproofness of oil tank improve greatly, prevents effectively that the medium in the oil tank from leaking outward, guarantees the execution of flight task and the safety of flight.

The outlet end of the joint 1 is funnel-shaped, namely the inner diameter of the outlet end of the joint 1 is gradually reduced along with the outlet direction; the plugging structure 2 comprises a plugging head 200 matched with the outlet end of the connector 1 and a spring I201 tightly abutting against the plugging head 200, namely, the plugging opening is in a cone shape matched with the outlet end of the connector 1, the spring I201 enables the plugging head 200 to be always abutted against the outlet of the connector 1 through the elasticity of the spring I201, so that the plugging head 200 is always abutted against the outlet end of the connector 1 under the condition that the plugging head 200 is not subjected to external force, the connector 1 is always in a closed state, when a medium needs to be added into the oil tank, an oil gun extends into the outlet end of the connector 1, the plugging head 200 can be subjected to external acting force at the moment, the acting force applied to the plugging head 200 is transmitted to the spring I201, the spring I201 is compressed, the plugging head 200 moves towards the inlet end of the connector 1, the outlet end of the connector 1 is opened, and the medium can be.

The inner wall of the outlet end of the joint 1 is also provided with at least one sealing ring 202, so that when the plugging head 200 is abutted against the outlet end of the joint 1, the plugging head 200 is in sealing fit with the sealing ring 202, and the sealing effect of the outlet end of the joint 1 is greatly improved.

The joint 1 is internally provided with a mounting cavity 4, a guide sleeve 203 is mounted in the mounting cavity 4, one end, close to the plugging head 200, of the guide sleeve 203 is provided with a groove 204, the groove 204 is an annular groove, the groove 204 is located on the end face of the guide sleeve 203, the rear end of the first spring 201 is tightly abutted to the groove 204, the rear end of the first spring 201 can be limited through the groove wall of the groove 204, the first spring 201 is always kept on the same straight line, the service life of the spring is guaranteed, the elasticity of the plugging head 200 is always kept consistent, and the plugging head 1 is better plugged by the plugging head 200.

The sealing head 200 is also provided with a positioning rod 205, and the central axis of the positioning rod 205 and the central axis of the sealing head 200 are on the same straight line; the first spring 201 is sleeved on the positioning rod 205, so that the central axis of the first spring 201 and the central axis of the positioning rod 205 are always kept on the same straight line, and the elasticity of the first spring 201 is more stable; the positioning rod 205 is inserted in the guide sleeve 203 in a sliding mode, and the positioning rod 205 is in sliding fit with the guide sleeve 203, so that the sealing head 200 can be guided by the matching of the positioning rod 205 and the guide sleeve 203 when moving, the movement of the sealing head 200 is always on the same straight line, the movement of the sealing head 200 is more stable, and the sealing effect of the sealing head 200 on the joint 1 is better.

One end of the guide sleeve 203, which is far away from the plugging head 200, is further provided with a notch 206 avoiding the inlet end of the joint 1, so that when the positioning rod 205 is moved to any position, the inlet end of the interface is communicated with the inside of the installation cavity 4, the guide sleeve 203 is effectively prevented from plugging the inlet end of the joint 1, the plugging head 200 is opened at the outlet end of the joint 1, the oil tank is communicated with the inside of the joint 1, and oil can be conveniently added into the oil tank for sampling.

The inner diameter of the inlet end of the joint 1 is larger than the diameter of the positioning rod 205, so that when the joint 1 is opened, even if the positioning rod 205 is inserted into the inlet end of the joint 1, a gap is still formed between the inlet end of the joint 1 and the positioning rod 205 for media to pass through, and the inlet end of the joint 1 is always in an open state, so that the media in the oil tank can always enter the installation cavity 4.

As shown in fig. 2, the dust cap 3 includes the inner cup 300, installs the seal receptacle 301 that supports the tight joint 1 terminal surface in the inner cup 300, and the seal receptacle 301 carries out the shutoff once more to the exit end of joint 1, makes the dust cap 3 lid establish on connecting 1 after, and the seal receptacle 301 compresses tightly at the exit end that connects 1, makes the exit end that connects 1 plugged once more to make the shutoff effect that connects 1 better, make the sealed effect of oil tank improve greatly, make the security performance of oil tank improve greatly.

As shown in fig. 3, the end face of the joint 1 has a raised lip edge 302, the lip edge 302 and the joint 1 are of an integral structure, and the top of the lip edge 302 is in a smooth arc shape; install the sealing ring 303 with lip 302 complex on the seal receptacle 301, the center of sealing ring 303 and the center of lip 302 are on the collinear, and the sealing ring 303 inlays the dress on seal receptacle 301, compresses tightly on the terminal surface of joint 1 when seal receptacle 301, makes lip 302 and sealing ring 303 seal cooperation, makes sealed effect improve greatly.

A second spring 304 is further installed in the inner cover 300, the second spring 304 abuts against and is tightly pressed between the sealing seat 301 and the cover surface of the inner cover 300, after the dustproof cover 3 is covered on the joint 1, the dustproof cover 3 is fixed, at the moment, the second spring 304 pushes the sealing seat 301 to abut against the end surface of the joint 1 through the elasticity of the second spring, and the pressing force of the sealing seat 301 and the joint 1 is ensured; in order to enable the second spring 304 to be installed more stably, a spring groove can be formed in the sealing seat 301, and one end, close to the sealing seat 301, of the second spring 304 is clamped in the spring groove, so that the second spring 304 is kept stable all the time under long-term use, and the service life of the second spring 304 is longer.

The inner wall of the inner cover 300 is also provided with a first check ring 305 for preventing the sealing seat 301 from being separated, the first check ring 305 is a steel wire, the first check ring 305 can limit the sealing seat 301, so that the sealing seat 301 can be prevented from being separated from the inner cover 300 when the second spring 304 pushes the sealing seat 301 to advance through self elasticity, and the sealing seat 301 is more stably installed; in order to prevent the first check ring 305 from blocking the outlet end of the joint 1, the outer wall of the sealing seat 301 can be provided with a limiting spigot matched with the first check ring 305, so that the limiting spigot is matched with the first check ring 305, the first check ring 305 cannot block the insertion of the joint 1 while the sealing seat 301 is ensured to be used for butting the joint 1, and the dust cover 3 can be more conveniently covered on the joint 1.

The circumferential surface of the inner cover 300 is further provided with a mounting groove 306, the mounting groove 306 is circular, a rolling steel ball 307 is mounted in the mounting groove 306, the steel ball 307 is abutted against the outlet end of the joint 1, in order to enable the clamping effect of the steel ball 307 to be better, an arc-shaped groove matched with the steel ball 307 can be further formed in the outer circular surface of the joint 1, when the steel ball 307 corresponds to the arc-shaped groove, the lower portion of the steel ball 307 is automatically clamped into the arc-shaped groove, and the connection between the inner cover 300 and the joint 1 is enabled to be more stable.

An outer sleeve 308 capable of sliding relatively is further sleeved outside the inner cover 300, a convex ring 309 corresponding to the steel balls 307 is further arranged on the inner wall of the outer sleeve 308, a gap between the convex ring 309 and the outer wall of the joint 1 is smaller than the diameter of the steel balls 307, and a conical guide surface 310 for guiding the steel balls 307 is arranged on one side of the convex ring 309; when the steel ball 307 needs to be clamped on the joint 1, the outer sleeve 308 is moved to enable the convex ring 309 to be gradually close to the steel ball 307, the steel ball 307 is gradually clamped on the joint 1 through the guide of the tapered guide surface 310, the pressing effect of the convex ring 309 on the steel ball 307 is better along with the continuous movement of the outer sleeve 308, when the inner circular surface of the convex ring 309 completely abuts against the steel ball 307, the steel ball 307 is clamped between the outer wall of the joint 1 and the inner wall of the convex ring 309, the joint 1 is clamped with the dust cap 3, and the dust cap 3 is fixedly covered at the outlet end of the joint 1.

When the dust cap 3 needs to be taken down from the joint 1, the outer sleeve 308 is pulled reversely, so that the outer sleeve 308 moves reversely on the inner cap 300, the tapered guide surface 310 gradually approaches to the steel ball 307 along with the movement of the outer sleeve 308, when the tapered guide surface 310 corresponds to the steel ball 307, the steel ball 307 loses the clamping force of the convex ring 309, the steel ball 307 loses the locking with the outer wall of the joint 1, and at the moment, the inner cap 300 is taken down from the joint 1 directly.

The mounting groove 306 is a plurality of, and a plurality of mounting grooves 306 are arranged along the even interval of periphery of inner cup 300, and all install steel ball 307 in every mounting groove 306, when making joint 1 pass through steel ball 307 and bulge loop 309 chucking, joint 1 can receive the common effort of a plurality of steel balls 307 simultaneously, makes the locking force distribution that connects 1 exit end more even to it is better to make the locking effect who connects 1, prevents effectively that shield 3 lid from establishing and producing after connecting 1 and droing.

The inner cover 300 is also provided with a cover edge 311, the cover edge 311 and the inner cover 300 are integrated, and the outer surface of the cover edge 311 is flush with the end surface of the inner cover 300; the outer wall of the inner cover 300 is further sleeved with a third spring 312, one end of the third spring 312 abuts against the cover edge 311, and the other end of the third spring 312 abuts against the convex ring 309. A second check ring 313 for limiting the excessive forward movement of the outer sleeve 308 is further arranged on the inner cover 300 or the outer sleeve 308, when the second check ring 313 is positioned on the inner cover 300, the second check ring 313 can be clamped on the outer wall of the inner cover 300, and the second check ring 313 is matched with the conical guide surface 310, and at the moment, the second check ring 313 can be directly a steel wire; when the second retainer ring 313 is positioned on the outer sleeve 308, the second retainer ring 313 can be directly arranged at the tail of the outer sleeve 308, at this time, the second retainer ring 313 and the outer sleeve 308 are integrally formed, and the second retainer ring 313 is matched with the cover edge 311, so that when the outer sleeve 308 moves forwards, the second retainer ring 313 can be limited by the cover edge 311, and the outer sleeve 308 cannot move forwards excessively on the inner cover 300.

Still be connected with between joint 1 and the shield 3 and connect rope 5, should connect rope 5 and can be the steel cable, connect the one end of rope 5 and connect on connecting 1 outer wall, connect the other end of rope 5 and connect on overcoat 308, when making shield 3 take off from connecting 1, need not place shield 3 at will, effectively prevent that shield 3 from losing, can prevent simultaneously that shield 3 from causing the pollution because of placing at desktop or other positions to other positions.

The utility model discloses when the medium is added to the oil tank in needs, pulling overcoat 308 is along inner cup 300 rearward movement, makes three 312 compressed springs, and the toper guide face 310 on the bulge loop 309 is close to steel ball 307 gradually, and when toper guide face 310 corresponds with steel ball 307, steel ball 307 loses the packing force of bulge loop 309, makes the mobilizable space of steel ball 307 bigger, makes steel ball 307 lose and connect the chucking of 1 exit end, make taking off from connecting 1 that inner cup 300 can relax.

Then, a pipeline or an oil gun for adding a medium into the oil tank extends into the outlet end of the joint 1, when the pipeline or the oil gun extends into the outlet end of the joint 1, the first spring 201 is compressed due to the acting force of the pipeline or the oil gun on the plug head 200, the plug head 200 moves into the installation cavity 4, the outlet end of the joint 1 is opened, at the moment, the pipeline or the oil gun adds the medium into the installation cavity 4 in the joint 1, and the medium entering the installation cavity 4 enters the oil tank through the inlet end of the joint 1, so that the medium is filled into the oil tank.

When the oil tank is full, the pipeline or the oil gun is taken down from the outlet end of the joint 1, at the moment, the blocking head 200 is not acted by the external force, the first spring 201 pushes the blocking head 200 to reset through the self elasticity, so that the blocking head 200 is tightly pressed against the outlet end of the joint 1, and the blocking head 200 is matched with the sealing ring 202, so that the outlet end of the joint 1 is sealed; finally, the inner cover 300 is covered at the outlet end of the joint 1, and after the inner cover 300 is covered, the outer sleeve 308 is pushed forwards, the convex ring 309 is gradually clamped on the steel ball 307, the steel ball 307 is clamped between the outer sleeve 308 and the outer wall of the joint 1, the dustproof cover 3 is fixedly covered on the joint 1, the dustproof cover 3 is covered on the joint 1, the spring II 304 pushes the sealing seat 301 to move towards the outlet end of the joint 1 through the elasticity of the spring II, the sealing ring 303 on the sealing seat 301 is abutted against the lip edge 302 on the joint 1, and the outlet end of the joint 1 is sealed again.

The utility model discloses a sealing ring 303 on sealing washer 202 and the seal receptacle 301 cooperates jointly, makes the exit end that connects 1 by double seal, makes the sealed effect that connects 1 improve greatly, avoids shutoff of shutoff head 200 to lead to the oil tank to produce when the abnormal conditions appear (sealing washer 202 wearing and tearing, fracture or shutoff head 200 jamming etc.) and leaks, makes the sealed absolute safety that keeps of oil tank, effectively avoids influencing aircraft executive task or aircraft safety, makes the security performance of oil tank improve greatly.

The utility model discloses still be applicable to on the equipment of storing other media, and also can be used to on the sample connection of other equipment or be used for adding the import of medium.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-seal quick-release self-sealing valve is characterized by comprising a joint (1) positioned on or connected with an equipment body and a dustproof cover (3) with a sealing cover arranged at the outlet end of the joint (1); the automatic plugging device is characterized in that a plugging structure (2) capable of automatically plugging the connector (1) is arranged in the connector (1).

2. The dual-sealing quick-release self-sealing valve according to claim 1, wherein the outlet end of the joint (1) is funnel-shaped, and the sealing structure (2) comprises a sealing head (200) matched with the outlet end of the joint (1) and a first spring (201) abutting against the sealing head (200).

3. The dual-seal quick-release self-sealing valve according to claim 2, wherein the inner wall of the outlet end of the joint (1) is further provided with a sealing ring (202).

4. The dual-seal quick-release self-sealing valve according to claim 2, wherein the joint (1) has a mounting cavity (4) therein, a guide sleeve (203) is mounted in the mounting cavity (4), a groove (204) is formed at one end of the guide sleeve (203) close to the plugging head (200), and the rear end of the first spring (201) abuts against the groove (204).

5. The dual-seal quick-release self-sealing valve according to claim 4, wherein the sealing head (200) further comprises a positioning rod (205), the first spring (201) is sleeved on the positioning rod (205), the positioning rod (205) is slidably inserted into the guide sleeve (203), and a notch (206) for avoiding the inlet end of the joint (1) is further formed at one end of the guide sleeve (203) away from the sealing head (200).

6. The dual-seal quick-release self-sealing valve according to claim 5, wherein the inner diameter of the inlet end of the joint (1) is larger than the diameter of the positioning rod (205).

7. The dual-seal quick-release self-sealing valve according to claim 1, wherein the dust cap (3) comprises an inner cap (300), and a sealing seat (301) abutting against the end face of the joint (1) is installed in the inner cap (300).

8. The dual-seal quick-release self-sealing valve according to claim 7, wherein the end face of the joint (1) is provided with a raised lip (302), and the sealing seat (301) is provided with a sealing ring (303) matched with the lip (302).

9. The dual-seal quick-release self-sealing valve according to claim 7, wherein a second spring (304) is further installed in the inner cap (300), and the second spring (304) is tightly pressed between the seal seat (301) and the cover surface of the inner cap (300).

10. The dual sealing quick-release self-sealing valve according to claim 9, wherein the inner wall of the inner cap (300) is further provided with a first retainer ring (305) for preventing the seal holder (301) from being detached.

11. The dual-seal quick-release self-sealing valve according to claim 7, wherein the inner cap (300) is further provided with an installation groove (306) on the circumferential surface thereof, and the installation groove (306) is internally provided with rolling steel balls (307); the inner cover (300) is also sleeved with an outer sleeve (308) capable of sliding relatively, the inner wall of the outer sleeve (308) is also provided with a convex ring (309) corresponding to the steel balls (307), and one side of the convex ring (309) is provided with a conical guide surface (310) for guiding the steel balls (307).

12. The dual sealing quick-release self-sealing valve according to claim 11, wherein the number of the mounting grooves (306) is plural, the plural mounting grooves (306) are uniformly spaced along the circumferential surface of the inner lid (300), and a steel ball (307) is mounted in each mounting groove (306).

13. The dual-seal quick-release self-sealing valve according to claim 11, wherein the inner cap (300) further has a cap edge (311), the outer wall of the inner cap (300) is further sleeved with a third spring (312), two ends of the third spring (312) respectively abut against the cap edge (311) and the convex ring (309), and the inner cap (300) or the outer sleeve (308) is further provided with a second retainer ring (313) for limiting the outer sleeve (308) from excessively moving forward.

14. The dual-seal quick-release self-sealing valve according to any one of claims 1 to 13, wherein a connecting rope (5) is further connected between the joint (1) and the dust cap (3).