CN210398067U

CN210398067U - Leakage-free connecting joint

Info

Publication number: CN210398067U
Application number: CN201921063155.4U
Authority: CN
Inventors: 李祖亮; 李�杰; 张洪; 李佳洪
Original assignee: Zhejiang Waysing Metal Products Co ltd
Current assignee: Zhejiang Waysing Metal Products Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-24
Anticipated expiration: 2029-07-09

Abstract

The utility model aims to provide a non-leakage connecting joint for solving the problems existing in the prior art, which comprises a revolving body structure shell with an inner cavity, wherein a valve body with a passage direction pointing from the front end to the rear end is arranged in the shell, a guide shell is sleeved in the shell, and the surface of the guide shell is provided with a spiral guide groove; the valve body comprises a valve core and a connecting plate, the rear end of the connecting plate is fixedly connected with the valve core, a guide post penetrates through the front end of the connecting plate, the end part of the guide post is movably embedded in the guide groove, the rear end of the shell is provided with a locking ring, the inner wall of the locking ring is movably connected with the valve core in a sealing mode, and the locking ring is connected with the shell in an adjustable mode. The leak-free connecting joint can conveniently realize the sealing and leakage prevention after the joint is disassembled at a relatively simple cost.

Description

Leakage-free connecting joint

Technical Field

The utility model relates to a fluid conveying equipment connects technical field, especially relates to a no leakage attach fitting.

Background

In an apparatus for transporting a fluid such as an oil or the like through a pipe, a connection joint is generally used to communicate a passage between pipes and a passage between tanks. Under the working conditions of pipeline replacement, connection change and the like after the conveying, the joint needs to be sealed after disconnection and before the next connection, so that oil in a container/pipeline connected with the other end of the joint is prevented from leaking.

The leakage-proof joints adopted by some manufacturers are only sealed and leakage-proof between the male joint and the female joint, and the leakage of oil cannot be effectively prevented after the connectors are disassembled. The part realizes the production purchase cost of the sealed leak-proof joint after being disassembled through structures such as the electromagnetic valve and the like is overhigh, and meanwhile, the service life and the maintenance convenience are not good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a no leakage attach fitting for solve the problem that exists among the prior art, can realize conveniently realizing through this no leakage attach fitting and connect the sealed leak protection after taking apart between the comparatively simple cost down.

To realize the purpose of the utility model, the utility model adopts the following technical scheme:

a leakage-free connecting joint comprises a revolving body structure shell with an inner cavity, wherein a valve body with a passage direction pointing from the front end to the rear end is arranged in the shell, a guide shell is sleeved in the shell, and a spiral guide groove is formed in the surface of the guide shell; the valve body comprises a valve core and a connecting plate, the rear end of the connecting plate is fixedly connected with the valve core, a guide post penetrates through the front end of the connecting plate, the end part of the guide post is movably embedded in the guide groove, the rear end of the shell is provided with a locking ring, the inner wall of the locking ring is movably connected with the valve core in a sealing mode, and the locking ring is connected with the shell in an adjustable mode.

As the utility model discloses a preferred, the casing lateral wall is equipped with at least one regulator, the locking ring include with direction shell rear end sealing connection's base ring, by the outside circumference extension's of base ring side adjustable ring with by adjust the hoop the regulation portion that the casing rear end extends, the regulator with the regulation portion top is only supported.

As the utility model discloses a preferred, the regulator is including fixed swivel nut, adjusting stud, fixation nut and roller, fixed swivel nut spiro union is worn to locate the casing, adjusting stud by the outside wearing of casing side direction is located in the fixed swivel nut, fixed nut spiro union in adjusting stud is located the outer one end of casing, the roller spiro union in adjusting stud is located one end in the casing.

Preferably, the adjusting part and the base ring form an adjusting groove therebetween, and the width of the adjusting groove is greater than or equal to the width of the roller.

Preferably, the top of the adjusting part is a conical recess with an increasing inner diameter from the outside to the inside of the locking ring.

As the utility model discloses a preferred, the regulator with the regulating part is including being around three groups of casing axis circumference equipartition, the adjustable ring edge is equipped with the opening of a plurality of circumference equipartitions.

As the utility model discloses a preferred, the spiral guide way includes the spiral section and is located the straightway that the spiral section both ends extend, the extending direction of straightway is on a parallel with arbitrary orthogonal plane of the axis of casing.

As the utility model discloses a preferred, casing front end sealing connection has the connector.

As the utility model discloses a preferred, casing rear end parcel has the protection ring.

Preferably, at least one handle is connected to the exterior of the housing.

The beneficial effects of the utility model reside in that: the locking ring can be used for clamping and fixing the valve core, namely the valve core can be adjusted through the adjustment of the adjuster, the valve core can freely extend out through loosening the locking ring during oil supply operation, and the valve core can be clamped by tensioning the locking ring to prevent the valve core from moving during non-oil supply operation, so that the sealing and leakage-preventing effect is realized. The effect of conveniently and effectively sealing the joint to prevent leakage through a simple mechanical adjusting structure is realized.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the connection between the valve body and the guide housing of the present invention;

fig. 3 is a schematic structural view of the locking ring of the present invention;

the items in the figure are respectively: the valve comprises a shell 1, a valve body 2, a valve core 21, a connecting plate 22, a guide column 23, a guide shell 3, a spiral guide groove 31, a spiral section 32, a straight line section 33, a locking ring 4, a base ring 41, an adjusting ring 42, an adjusting part 43, an adjusting groove 44, an opening 45, an adjuster 5, a fixed screw sleeve 51, an adjusting screw bolt 52, a fixed nut 53, a roller 54, a connector 6, a protective ring 7 and a handle 8.

Detailed Description

The present invention is described in detail below with reference to the attached drawings:

as shown in fig. 1, 2 and 3, the leak-free joint comprises a steel shell 1 with an inner cavity and a revolving body structure, wherein a valve body 2 with a passage direction pointing from the front end to the rear end is sleeved in the shell 1, a guide shell 3 is sleeved in the shell 1 through a sealing ring and stably in a stepped shaft structure limiting mode, a spiral guide groove 31 is formed in the surface of the guide shell 3, and the spiral guide groove 31 has two centrosymmetric grooves; the valve body 2 comprises a valve core 21 and a connecting plate 22, the rear end of the connecting plate is fixedly connected with the valve core 21 through a transverse penetrating pin shaft, a hollow guide pipe is welded at the front end of the connecting plate 22, a guide post 23 (used for facilitating installation of the guide post 23 in a spiral guide groove 31) penetrates through the guide pipe, the end part of the guide post 23 is movably embedded in the spiral guide groove 31 and forms connection guide at two ends, the valve body 2 can realize the telescopic function through the movement of the guide post 23 in the spiral guide groove 31 along the groove body structure, and therefore oil inlet and outlet/sealing and the like are realized. The rear end of the shell 1 is provided with a locking ring 4, the inner wall of the locking ring 4 is movably connected with the valve core 21 in a sealing way, and the locking ring 4 is adjustably connected with the shell 1.

In this embodiment, three adjusters 5 are provided on the side wall of the housing 1, the locking ring 4 includes a base ring 41 which is sealingly connected to the rear end of the guide housing 3 by a sealing ring, an adjusting ring 42 which integrally extends from the side surface of the base ring 41 in the circumferential direction, and an adjusting portion 43 which integrally extends from the adjusting ring 42 toward the rear end of the housing 1, and the adjusters 5 are stopped against the top ends of the adjusting portion 43. The regulator 5 comprises a hollow fixed threaded sleeve 51 with external threads, an adjusting stud 52 with a stop at one end, a hexagonal fixed nut 53 and a roller 54 with a smooth outer surface, the fixed threaded sleeve 51 is threaded on the shell 1, the adjusting stud 52 is threaded in the fixed threaded sleeve 51 from the inner side of the shell 1 to the outer side, a rubber layer covers the inner surface of the fixed threaded sleeve 51, better sealing can be formed after the surface threads of the adjusting stud 52 are threaded, the fixed nut 53 is threaded at one end of the adjusting stud 52 positioned outside the shell 1, and the roller 54 is threaded at one end of the adjusting stud 52 positioned in the shell 1. The space between the adjusting part 43 and the base ring 41 forms an adjusting groove 44, and the width of the opening 45 of the adjusting groove 44 is larger than or equal to the width of the roller 54. The top of the adjustment part 43 is a tapered recess having a diameter (i.e., opening size) gradually increased from the outside toward the inside of the locking ring 4. The locking ring 4 in this embodiment is preferably made of high-strength plastic (e.g., POM) or elastic alloy, and has an inner diameter that is gradually reduced from the front end to the rear end, the diameter difference between the two ends is 0.05-0.1 mm, and the rear end diameter is in a state of tightly hooping the valve core 21 and the sealing ring surrounding the valve core 21 under an unstressed condition. When the valve core 21 needs to be locked to prevent leakage, the roller 54 is positioned above the opening of the adjusting groove 44 by screwing the fixing nut 53 and the adjusting stud 52 (the screwing direction can be judged by field workers, and only the roller action needs to be realized), because the opening width of the adjusting groove 44 is larger than the width of the roller 54, namely, a state that the roller 54 is not contacted with the adjusting part 43 is presented, the locking ring 4 is in an unstressed state, the diameter of the rear end of the locking ring is to clamp the valve core 21, the friction force generated by the pressure on the rubber sealing ring which is arranged on the circumferential direction of the valve core 21 and is connected with the locking ring 4 in a sealing mode is larger than the oil pressure in a front pipeline or a container, even if the valve core 21 cannot move, and the sealing is. When the valve core 21 needs to be relatively freely stretched and contracted to open the passage in the housing 1 for oil supply, the roller 54 is moved from above the adjusting groove 44 to above the adjusting part 43 by screwing the fixing nut 53 and the adjusting stud 52 (the screwing direction can be determined by field workers, and only the roller action needs to be realized), because the top end of the adjusting part is in a structure with an opening gradually enlarged from outside to inside, the track of the roller 54 shows the action of pressing the adjusting ring 42 where the adjusting part 43 is located from the rear end direction to the front end direction of the housing 1 through the contact with the structure with an approximate inclined surface, because the front end of the locking ring 4 is in contact and sealing connection with the housing 1 or the guide housing 3, and here shows the lever swinging action which takes the contact part with the housing 1/the guide housing 3 as a lever fulcrum and enables the base ring 41 to be pressed outwards under the action of the pressing action. Under the action of the lever action, the rear end of the base ring (namely the clamping position of the valve core 21) is relatively expanded (the rear end is easily deformed and cannot be damaged because of being made of high-strength plastic or elastic alloy, and simultaneously the rear end can restore to the state of clamping the valve core 21 after the pressure action is cancelled) and the diameter variation after expansion is about 0.05-0.1 mm, because the valve core 21 is connected with the locking ring 4 through the rubber sealing ring, after the diameter is increased and the pressure is reduced, the friction force of the wall surface on the rubber sealing ring is reduced, at the moment, the oil pressure in a front pipeline or a container is larger than the friction force, the valve core 21 can be pushed to rotate and be pushed out along the spiral guide groove 31, and the passage of the leakage-free connecting joint is opened to realize oil liquid circulation and. Generally, the leak-free connecting joint is used as a female joint connected to an oil supply pipeline/container section, when oil supply is completed and replaced, an oil receiving pipeline/container connected to the rear end of the leak-free connecting joint is removed, the valve core 21 is pushed back into the locking ring 4 in a manual or mechanical pressing mode (when a male joint with a valve core push-back function is connected, the valve core 21 is pushed back through a link mechanism of the male joint and then removed, so that oil remained in the shell 1 cannot leak before being clamped), and then the regulator 5 is operated through the clamping step to clamp the valve core 21, so that the oil in the oil supply pipeline/container at the front end of the shell cannot leak before being connected to the next oil receiving pipeline/container.

In this embodiment, the adjuster 5 and the adjusting portion 43 comprise three groups which are uniformly distributed circumferentially around the axis of the housing 1, so that the locking ring 4 can be uniformly applied with force from three directions to change the locking state. The adjusting ring 42 is provided with a plurality of circumferentially and uniformly distributed openings 45 at the edge, the openings 45 enable the adjusting ring 42 to have gaps between the adjusting parts 43, namely each adjusting part 43 corresponds to a relatively independent section between every two openings 45, and the structure enables the sections of the adjusting ring 42 corresponding to the adjusting parts 43 to be relatively independently pressed when the adjusting ring 42 is pressed, so that the movable range is wider, the adjusting effect is more obvious, and the adjusting ring is less prone to damage.

In this embodiment, the spiral guide groove 31 includes a spiral section 32 and straight line sections 33 located at two ends of the spiral section 32, the extending direction of the straight line section 33 is parallel to any orthogonal plane of the axis of the housing 1, that is, the valve element 21 is located on the straight line section 33 when being completely ejected and completely retracted, that is, the valve element 21 can be pushed out from the straight line section 33 to enter the spiral section 32 to achieve the telescopic effect by applying a certain large moment, so that leakage caused by uncontrolled telescopic movement of the valve element 21 on occasions with extra acting force, such as shaking, dropping, and the like, can be avoided. The length of the straight line section 33 is preferably 1-1.5 times of the diameter of the guide column 23, the guide column cannot play a stabilizing effect when being too short, and the moment which can be pushed out is too large when being too long, so that the extension and retraction cannot be effectively realized through an oil pressure/manual/male structure.

In this embodiment, a connector 6 is hermetically connected to the front end of the housing 1 for connecting with an external oil supply pipeline/container.

In this embodiment, the rear end of the housing 1 is covered with the protection ring 7, the protection ring 7 is made of soft rubber/plastic and the like, and the protection ring is embedded and surrounded on the whole edge of the rear end of the housing 1, so that the connector can effectively protect and prevent collision when being connected and detached with an external male connector, and meanwhile, the soft structure of the connector can form sealing through extrusion deformation between the connectors.

In this embodiment, the two symmetrical handles 8 are connected to the exterior of the housing 1, so as to facilitate the installation and disassembly of the leak-free joint, and especially when the front end of the housing is connected to a flexible pipeline, the handles 8 can provide an effective positioning auxiliary effect for the connection between the joints.

The above embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and the various modifications and improvements made by the ordinary person in the art without departing from the design concept of the present invention all fall into the protection scope of the present invention.

Claims

1. A leakage-free connecting joint comprises a shell (1) with a rotary body structure and an inner cavity, wherein a valve body (2) with a passage direction pointing from the front end to the rear end is arranged in the shell (1), and is characterized in that a guide shell (3) is sleeved in the shell (1), and a spiral guide groove (31) is formed in the surface of the guide shell (3); the valve body (2) comprises a valve core (21) and a connecting plate (22) with the rear end fixedly connected with the valve core (21), a guide post (23) penetrates through the front end of the connecting plate (22), the end part of the guide post (23) is movably embedded in the spiral guide groove (31), a locking ring (4) is arranged at the rear end of the shell (1), the inner wall of the locking ring (4) is movably and hermetically connected with the valve core (21), and the locking ring (4) is adjustably connected with the shell (1).

2. A joint as claimed in claim 1, wherein the side wall of the housing (1) is provided with at least one adjuster (5), the locking ring (4) comprises a base ring (41) sealingly connected to the rear end of the guide housing (3), an adjusting ring (42) extending circumferentially outward from the side of the base ring (41), and an adjusting portion (43) extending from the adjusting ring (42) to the rear end of the housing (1), and the adjuster (5) abuts against the top end of the adjusting portion (43).

3. A leak-free joint according to claim 2, wherein the adjuster (5) comprises a fixed threaded sleeve (51), an adjusting stud (52), a fixed nut (53) and a roller (54), the fixed threaded sleeve (51) is threaded through the housing (1), the adjusting stud (52) is threaded through the fixed threaded sleeve (51) from the inside of the housing (1) to the outside, the fixed nut (53) is threaded at the end of the adjusting stud (52) located outside the housing (1), and the roller (54) is threaded at the end of the adjusting stud (52) located inside the housing (1).

4. A leak-free joint according to claim 3, wherein the adjustment portion (43) and the base ring (41) define an adjustment slot (44) therebetween, the adjustment slot (44) having a width equal to or greater than the width of the roller (54).

5. A leak-free joint according to claim 4, wherein the top of the adjustment portion (43) is a conical recess with a diameter increasing from the outside to the inside of the locking ring (4).

6. A leakless connection joint as claimed in claim 2, characterized in that said regulator (5) and said regulating portion (43) comprise three groups circumferentially distributed around the axis of said casing (1), said regulating ring (42) being provided at its edge with a plurality of circumferentially distributed openings (45).

7. A joint as claimed in claim 1, wherein the helical guide groove (31) comprises a helical portion (32) and straight portions (33) extending at both ends of the helical portion (32), the direction of extension of the straight portions (33) being parallel to any orthogonal plane of the axis of the housing (1).

8. A leak-free joint according to claim 1, wherein the front end of the housing (1) is sealingly connected to the joint head (6).

9. A leak-free joint according to claim 1, wherein the rear end of the housing (1) is covered with a protective ring (7).

10. A leak-free joint as claimed in claim 1, characterized in that at least one grip (8) is connected to the outside of the housing (1).