Reusable safety breakaway valve

Abstract

The utility model discloses a reusable safety snap valve, and relates to the technical field of emergency release devices. The reusable safety breakaway valve comprises a connector, a sealing valve and a connection reset structure, the sealing valve and the connection reset structure are located on the inner side of the connector, and the connection reset structure is located on the outer side of the sealing valve. The reusable safety snap valve is provided with a sealing valve and a connection reset structure, and the valves are arranged in the oil inlet connector and the oil outlet connector respectively, so that after the oil outlet connector is separated from the oil inlet connector, the two valves can be quickly closed to prevent oil in a pipeline from splashing; the connection reset structure is provided with a steel ball fixing sleeve and a multi-layer series wave spring, the structural design that four steel balls roll and separate is adopted in the steel ball fixing sleeve is utilized, mechanical friction damage generated after the oil outlet connector and the oil inlet connector are separated is avoided, and separation is rapid; the multi-layer series-connection wave spring is used as a control element of force needed by axial separation, and the pulling force is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to emergency disengagement device technical field, concretely is reusable safety pull valve. BACKGROUND

[0002] The emergency disengagement device can prevent leakage accidents caused by accidental breakage of the rubber pipe, and is suitable for ship-to-shore unloading, tank loading and unloading on highways and railways, and other fixed and mobile fluid storage devices, such as the connection between the crane pipe and the fluid conveying arm and the transport carrier.

[0003] The existing safety pull valve needs to be replaced with a new pull valve after triggering the pull-off, especially some safety pull valves applied in special environments or with special specifications, which have high procurement costs; the replacement of the pull valve requires professional personnel to operate, which increases the labor cost; and during the replacement process, corresponding tools and equipment may also need to be provided, and the new pull valve needs to be debugged, which further increases the maintenance cost.

[0004] The safety pull valve cannot be reused, and in the case of special environments or special specifications, the procurement cost is high; the replacement of the pull valve requires professional personnel, increasing the labor cost; professional tools and equipment are required for the replacement of the pull valve, increasing the maintenance cost; the replacement process of the pull valve reduces the work efficiency, which seriously affects the production or operation efficiency, causing economic losses. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a reusable safety pull valve, which solves the problems of the safety pull valve that cannot be reused, high procurement cost in special environments or with special specifications, replacement of the pull valve requiring professional personnel, increasing the labor cost, replacement of the pull valve requiring professional tools and equipment, increasing the maintenance cost, and reduction of work efficiency during the replacement process of the pull valve, which seriously affects the production or operation efficiency and causes economic losses.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: the reusable safety pull valve comprises a connecting head, a sealing valve and a connecting reset structure, the sealing valve and the connecting reset structure are located on the inner side of the connecting head, the connecting reset structure is located on the outer side of the sealing valve, and the connecting reset structure comprises:

[0007] An inner tube is inserted into the inner side of the sealing valve.

[0008] An outer shell is sleeved on the outer side of the connecting head, and a limiting ring and a multilayer wave spring are arranged on the inner side of the outer shell.

[0009] Steel ball fixing sleeve is arranged between the shell and the connecting head, and the steel ball fixing sleeve is clamped with rolling steel ball inside.

[0010] Preferably, the connecting head comprises:

[0011] Oil inlet joint is sleeved with a limiting nut and an upper sheath outside;

[0012] Reset sleeve is clamped above the limiting nut;

[0013] Oil outlet joint is inserted inside the oil inlet joint, and the oil outlet joint is sleeved with a lower sheath outside;

[0014] Valve seat sealing surface is arranged inside the oil inlet joint and the oil outlet joint.

[0015] Preferably, a cylindrical pin is inserted outside the oil inlet joint, and a connecting sealing ring is arranged inside the oil inlet joint.

[0016] Preferably, a reset spring is arranged on the top of the reset sleeve, and the reset spring abuts against the oil inlet joint.

[0017] Preferably, the sealing valve comprises:

[0018] Valve seat is provided with a liquid passage, and a valve seat sealing ring is sleeved on the valve seat;

[0019] Valve core is sleeved outside the valve seat and closely abuts against the valve seat sealing ring, a compression spring is sleeved outside the valve core and clamped with the valve seat, and a valve core sealing ring is clamped outside the valve core and closely abuts against the valve seat sealing surface.

[0020] Preferably, a gas-liquid sealing ring is sleeved outside the inner tube, and a gas passage is arranged inside the inner tube.

[0021] Preferably, the limiting ring is inserted inside the shell and clamped with the connecting head.

[0022] The utility model discloses a reusable safety pull-off valve, which has the following beneficial effects:

[0023] The utility model discloses a sealed valve, connecting reset structure are provided with, utilize respectively in the oil inlet joint and oil outlet joint inside setting up valve, when oil outlet joint and oil inlet joint separate, two valves can close quickly and prevent the oil spatter in pipeline, and connecting reset structure is provided with steel ball fixed cover and multilayer series wave spring, utilize 4 steel ball rolling separation structure design in steel ball fixed cover, avoid the mechanical friction damage of oil outlet joint and oil inlet joint after separating, separate quickly, utilize multilayer series wave spring, as the control element of axial separation required force, and the tension is stable, and the tension error is smaller, and the service life is long, and the wave spring structure is simple, and the space is smaller, since the spring force is always acted on the import and export joint, and the safety pullout valve conductive performance is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, below description in the drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0025] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0026] Fig. 2 It is the internal structure schematic diagram of the oil outlet end of the utility model;

[0027] Fig. 3 It is the cross section structure schematic diagram of the utility model.

[0028] In the drawing: 1, connecting head;11, oil inlet joint;111, cylindrical pin;112, connecting sealing ring;113, limit nut;114, upper sheath;12, reset sleeve;121, reset spring;13, oil outlet joint;132, lower sheath;14, valve seat sealing surface;2, sealed valve;21, valve seat;211, liquid channel;212, valve seat sealing ring;22, valve core;221, compression spring;222, valve core sealing ring;3, connecting reset structure;31, inner tube;311, gas-liquid sealing ring;312, gas channel;32, shell;321, limit ring;322, multilayer wave spring;33, steel ball fixed cover;331, rolling steel ball. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0030] The application provides the reusable safety pull-off valve, solves the problem that the safety pull-off valve cannot be reused, the procurement cost is higher in the case of special environment or special specification requirement, the professional personnel is needed for replacement of the pull-off valve, the labor cost is increased, the professional tool and equipment are needed for replacement of the pull-off valve, the maintenance cost is increased, the work efficiency is reduced in the replacement process of the pull-off valve, the production or operation efficiency is seriously affected, and the economic loss is caused, the use cost is reduced, the cost is saved, and the work efficiency is improved.

[0031] The utility model discloses a reusable safety pull-off valve.

[0032] Embodiment one

[0033] According to the drawings, Figs. 1-3 As shown, including connecting head 1, sealing valve 2 and connecting reset structure 3, sealing valve 2 and connecting reset structure 3 are located in the inside of connecting head 1, connecting reset structure 3 is located in the outside of sealing valve 2, and connecting reset structure 3 includes:

[0034] Inner tube 31 is inserted in the inside of sealing valve 2.

[0035] Shell 32 is sleeved on the outside of connecting head 1, and the inside of shell 32 is provided with a limiting ring 321 and a plurality of wave springs 322.

[0036] Steel ball fixing sleeve 33 is arranged between shell 32 and connecting head 1, and the inside of steel ball fixing sleeve 33 is connected with rolling steel ball 331.

[0037] The sealing valve 2 and the connecting reset structure 3 are arranged, the sealing valve 2 is arranged in the oil inlet joint 11 and the oil outlet joint 13 respectively, when the oil outlet joint 13 is separated from the oil inlet joint 11, the two sealing valves 2 can be quickly closed to prevent the oil in the pipeline from spilling, the connecting reset structure 3 is provided with a steel ball fixing sleeve 33 and a multilayer wave spring 322, the steel ball fixing sleeve 33 is designed by using four rolling steel balls 331 to roll and separate, so that mechanical friction damage caused by the separation of the oil outlet joint 13 and the oil inlet joint 11 is avoided, and the separation is quick; the multilayer wave spring 322 is used as a control element of the force required for axial separation, the tension is stable, the tension error is small, the service life is long, and the wave spring structure is simple and occupies small space, because the spring force always acts on the inlet and outlet joints, the safety pull-off valve has excellent conductivity.

[0038] Further, the connecting head 1 comprises:

[0039] The oil inlet joint 11 is sleeved with a limiting nut 113 and an upper sleeve 114 outside the oil inlet joint 11;

[0040] The reset sleeve 12 is connected above the limiting nut 113;

[0041] The oil outlet joint 13 is inserted into the inside of the oil inlet joint 11, and the oil outlet joint 13 is sleeved with a lower sleeve 132 outside the oil outlet joint 13;

[0042] The valve seat sealing surface 14 is arranged inside the oil inlet joint 11 and the oil outlet joint 13.

[0043] Further, the cylindrical pin 111 is inserted outside the oil inlet joint 11, and the connecting sealing ring 112 is arranged inside the oil inlet joint 11.

[0044] It is particularly disclosed that the reset spring 121 is arranged at the top of the reset sleeve 12, and the reset spring 121 abuts against the oil inlet joint 11.

[0045] It is particularly disclosed that the sealing valve 2 comprises:

[0046] The valve seat 21 is provided with a liquid passage 211, and the valve seat sealing ring 212 is sleeved on the valve seat 21;

[0047] The valve core 22 is sleeved outside the valve seat 21 and tightly abuts against the valve seat sealing ring 212, the compression spring 221 is sleeved outside the valve core 22 and abuts against the valve seat 21, and the valve core sealing ring 222 is connected outside the valve core 22 and tightly abuts against the valve seat sealing surface 14.

[0048] It needs to be particularly emphasized that the gas-liquid sealing ring 311 is sleeved outside the inner tube 31, and the gas passage 312 is arranged inside the inner tube 31.

[0049] Example 2

[0050] According to the appendix Figs. 1-3 As shown, it includes a connector 1, a sealing valve 2, and a connection reset structure 3. The sealing valve 2 and the connection reset structure 3 are located inside the connector 1, and the connection reset structure 3 is located outside the sealing valve 2. The connection reset structure 3 includes:

[0051] Inner tube 31 is inserted into the inside of sealing valve 2;

[0052] The outer casing 32 is sleeved on the outside of the connector 1, and the inner side of the outer casing 32 is provided with a limit ring 321 and a multi-layer wave spring 322.

[0053] A steel ball retaining sleeve 33 is disposed between the outer shell 32 and the connector 1, and a rolling steel ball 331 is engaged inside the steel ball retaining sleeve 33.

[0054] It should be emphasized that the limiting ring 321 is inserted into the inner side of the outer shell 32 and engaged with the connector 1.

[0055] Working Principle: This type of breakaway valve is equipped with a gas passage 312 and a liquid passage 211 to ensure the recovery of volatile gases during refueling. During refueling, in case of an unexpected situation, when the pipeline connecting the refueling nozzle and the breakaway valve is pulled, the outlet connector of the breakaway valve will move downwards with the increasing pulling force. Because multiple rolling steel balls 331 are installed between the ball groove on the inlet connector 11 and the steel ball fixing sleeve 33, the steel ball fixing sleeve 33 drives the multi-layer wave spring 322 to compress. When the rolling steel balls 331 move to the safety groove position, they spread outwards under the pulling force, causing the outlet connector 13 to separate from the inlet connector 11. The separated outlet connector 13 contains a valve seat 21, a valve core 22, and a compression spring 221. Under the thrust of the compression spring 221, the valve core 22 and the valve seat sealing surface 14 are closed, preventing liquid from splashing from the pipeline connected to the outlet connector 13. The separated oil inlet connector 11 is equipped with a valve seat 21, a valve core 22 and a compression spring 221. Under the thrust of the compression spring 221, the valve core 22 and the valve seat sealing surface 14 are closed to prevent liquid from splashing in the oil inlet pipe.

[0056] After the pull-out protection function is activated, refueling operations should be stopped, and the equipment should be powered off before reinstalling the oil outlet connector 13. After the oil outlet connector 13 separates from the oil inlet connector 11, the multi-layer wave spring 322 pushes the steel ball fixing sleeve 33 and the rolling steel ball 331 to automatically return to their original positions. According to the markings on the upper sleeve 114 and the lower sleeve 132, insert the oil outlet connector 13 into the oil inlet connector 11 until the upper and lower outer shells 32 contact each other. Then, rotate it 45 degrees in the direction of the arrow to complete the reset.

[0057] Reset principle: the oil inlet joint 11 is provided with a positioning pin and an upper sleeve 114 with reset mark, the reset spring and the reset sleeve 12 are fixed on the oil inlet joint 11 by the limiting nut 113, four bosses and a positioning device are arranged on the reset sleeve 12, the upper part forms a positioning relationship with the steel ball fixed sleeve 33, and the angle position of the bosses and the steel ball is ensured not to change when the reset sleeve 12 reciprocates. The oil outlet joint 13 is uniformly provided with four grooves corresponding to four steel balls, the waist of the oil outlet joint 13 has an arc-shaped groove matching the rolling steel ball 331, and the oil outlet joint 13 is provided with a lower sleeve 132 with reset mark. When the oil outlet joint 13 moves upward, the end of the joint pushes the reset sleeve 12 to move upward, and the reset spring 121 is compressed, when the upper sleeve 114 and the lower sleeve 132 are aligned, the rolling steel ball 331 is matched with the arc-shaped groove on the oil outlet joint 13, the oil outlet joint 13 is rotated according to the arrow mark, when the groove on the oil outlet joint 13 passes the boss position on the reset sleeve 12, the reset sleeve 12 rapidly moves downward under the pushing force of the reset spring 121, and when a click sound is heard, the reset is completed.

[0058] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the industry that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A reusable safety breakaway valve, comprising a connector (1), a sealing valve (2), and a connection reset structure (3), wherein the sealing valve (2) and the connection reset structure (3) are located inside the connector (1), and the connection reset structure (3) is located outside the sealing valve (2), characterized in that, The connecting reset structure (3) comprises: An inner tube (31) inserted in the sealing valve (2); An outer shell (32) sleeved outside the connecting head (1), the inner side of the outer shell (32) is provided with a limiting ring (321) and a multi-layer wave spring (322); A steel ball fixing sleeve (33) arranged between the outer shell (32) and the connecting head (1), the inner side of the steel ball fixing sleeve (33) is clamped with a rolling steel ball (331).

2. The reusable safety pull-off valve according to claim 1, characterized in that The connecting head (1) comprises: An oil inlet joint (11) outside which is sleeved with a limiting nut (113) and an upper protective sleeve (114); A reset clamping sleeve (12) clamped above the limiting nut (113); An oil outlet joint (13) inserted inside the oil inlet joint (11), the outer side of the oil outlet joint (13) is sleeved with a lower protective sleeve (132); A valve seat sealing surface (14) arranged inside the oil inlet joint (11) and the oil outlet joint (13).

3. The reusable safety pull-off valve according to claim 2, characterized in that The outer side of the oil inlet joint (11) is inserted with a cylindrical pin (111), and the inner side of the oil inlet joint (11) is provided with a connecting sealing ring (112).

4. The reusable safety pull-off valve according to claim 2, characterized in that The reset spring (121) is in abutment with the oil inlet joint (11).

5. The reusable safety pull-off valve according to claim 1, characterized in that The sealing valve (2) comprises: A valve seat (21) having a liquid passage (211) formed therein, and a valve seat sealing ring (212) sleeved thereon; A valve core (22) sleeved outside the valve seat (21) and tightly abutting the valve seat sealing ring (212), the outer side of the valve core (22) is sleeved with a compression spring (221) and the valve seat (21) is clamped, and the outer side of the valve core (22) is clamped with a valve core sealing ring (222) and the valve seat sealing surface (14) is tightly abutted.

6. The reusable safety pull-off valve according to claim 1, characterized in that The outer side of the inner tube (31) is sleeved with a gas-liquid sealing ring (311), and the inner side of the inner tube (31) is provided with a gas passage (312).

7. The reusable safety pull-off valve according to claim 1, characterized in that The limiting ring (321) is inserted inside the outer shell (32) and clamped with the connecting head (1).

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