Special self-locking tight-type anti-falling device for liquefied hydrocarbon

Abstract

The utility model discloses a special self-closing locking type anti-falling device for liquefied hydrocarbon, which comprises a female joint shell, a female joint casing pipe is arranged in the female joint shell, a plurality of ball grooves are arranged on the peripheral surface of the inner pipe wall on the right side of the casing pipe, balls are arranged in a circle of ball grooves, a pushing piece is arranged on the left side of the balls, and the pushing piece is connected with a self-closing valve core. The valve element is connected with the push rod through a spring, locking handles are installed on the outer sides of the two sides of the sleeve through connecting rod mechanisms, and a limiting pin is arranged between the female connector shell and the female connector sleeve. Clamping connection with the male connector is achieved through the limiting balls on the female connector sleeve, so that the structure is more abrasion-resistant, the requirement for rapid butt joint is met, sealing performance is good, and maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve body connection, and in particular relates to a self-closing locking anti-dropping device special for liquefied hydrocarbons. Background Art

[0002] Tank truck quick connectors are mainly used to connect the hoses between tank trucks and other equipment when tank trucks are transporting liquids. The working principle of tank truck quick connectors is to quickly connect and disconnect the hoses of tank trucks and other equipment. For fluid transportation, it can greatly improve the loading and unloading efficiency. For chemical liquids, petroleum derivatives, volatile, toxic and harmful liquids, such as liquefied hydrocarbons, liquefied hydrocarbon substances are Class A and Class A fire hazard media, with obvious fire and explosion hazards, and are equipped with wave-proof baffles and anti-static grounding chains. It is necessary to ensure the tightness and reliability of the quick connector.

[0003] At present, most of the quick connectors are manually fastened to connect the male connector and the female connector. There is a circle of grooves on the structure of the male connector. After the male connector is inserted into the female connector, it is limited by the cam locking mechanism on the female connector to achieve effective docking. However, due to the wear of the cam locking mechanism over a long period of time, its reliability is reduced, and there is a possibility of loosening of the docking, which may cause leakage. For volatile, toxic and harmful fluids, the reliability of the docking needs to be guaranteed. Summary of the invention

[0004] The utility model aims to design a self-closing locking anti-detachment device for liquefied hydrocarbons, which adds a secondary limit and locking mechanism to prevent the male connector from accidentally detaching while ensuring quick docking.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A self-closing locking anti-slip device specially designed for liquefied hydrocarbons, characterized in that it includes a female connector shell, a female connector sleeve is installed in the female connector shell, a plurality of ball grooves are provided on the circumference of the inner tube wall on the right side of the sleeve, balls are installed in a circle of ball grooves, a push piece is installed on the left side of the balls, the push piece is connected to a self-closing valve core, the valve core is connected to the push rod through a spring, locking handles are installed on the outer sides of both sides of the sleeve through a connecting rod mechanism, and a limit pin is provided between the female connector shell and the female connector sleeve.

[0007] Furthermore, the female connector housing is provided with a through pin hole, the female connector sleeve is provided with a groove corresponding to the pin hole, and the limit pin penetrates the pin hole and falls on the groove to realize self-resetting locking.

[0008] Furthermore, a limiting step is provided between the female connector housing and the female connector sleeve.

[0009] Furthermore, the female joint sleeve and the valve core are arranged correspondingly, and both are in a cone shape.

[0010] Furthermore, the push piece adopts a ring-shaped ring body, and the middle of the ring body is connected to the valve core through a push rod.

[0011] The following beneficial effects can be obtained through the above technical solution:

[0012] The utility model realizes the clamping connection with the male connector through the limiting ball on the female connector sleeve, so the structure is more wear-resistant and meets the requirements of quick docking, has good sealing performance, is easy to maintain, and is convenient to disassemble and maintain.

[0013] The utility model adds a limit pin to play a secondary limit locking role to prevent disengagement and avoid accidental disconnection of the connection. The limit pin has two modes of locking and releasing. The locking is released when pulled out and locked when inserted.

[0014] The utility model adopts the cooperation of the handle and the connecting rod mechanism, which can easily realize the docking of the male and female joints, saves the effort of the operator, and has a convenient operation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a self-closing female connector.

[0016] Figure 2 It is a docking diagram.

[0017] Figure 3 This is a diagram of the locking state of the female connector housing and the female connector sleeve.

[0018] Figure 4 This is a diagram of the female connector housing and the female connector sleeve being released.

[0019] Figure 5 This is a diagram of the relationship between the female connector sleeve and the male connector.

[0020] Figure 6 It is a schematic diagram of the male connector being inserted into the female connector sleeve. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] like Figure 1-6 As shown, a self-closing locking anti-slip device dedicated to liquefied hydrocarbons comprises a female connector shell 1, a female connector sleeve 2 is installed in the female connector shell 1, a plurality of ball grooves are provided on the circumference of the inner tube wall on the right side of the sleeve 2, balls 3 are installed in a circle of ball grooves, a push piece 4 is installed on the left side of the ball 3, the push piece 4 is connected to a self-closing valve core 5, the valve core is connected to the push rod through a spring 7, locking handles 8 are installed on the outer sides of both sides of the sleeve 2 through a connecting rod mechanism, and a limit pin 6 is provided between the female connector shell 1 and the female connector sleeve 2.

[0023] The female connector housing 1 is provided with a through pin hole, and the female connector sleeve 2 is provided with a groove 9 corresponding to the pin hole. The limit pin penetrates the pin hole and falls on the groove to realize self-resetting locking.

[0024] A limiting step 10 is provided between the female connector housing 1 and the female connector sleeve 2 .

[0025] The female joint sleeve 2 is arranged corresponding to the valve core, and both are in a cone shape.

[0026] The push piece 4 is a ring-shaped ring body, and the middle of the ring body is connected to the valve core 5 through a push rod.

[0027] Directions:

[0028] Figure 2 and 5 As shown, the male connector 12 is ready to be inserted into the female connector sleeve 2 of the utility model, and the stop pin 6 is pulled out from the groove of the female connector sleeve 2. At this time, the female connector housing 1 and the female connector sleeve 2 are in a separated state, and then the locking handle 8 is held and pulled successively. Under the action of the connecting rod mechanism, the female connector sleeve 2 is disengaged from the female connector housing 1 ( Figure 4 As shown), it can be seen from the figure that the female connector sleeve 2 extends from the right side of the female connector housing 1. When extending, the ball on the female connector sleeve 2 has a large range of movement due to the limiting step 10 of the female connector housing 1. When the male connector 12 is inserted into the female connector sleeve 2, the ball does not block the insertion of the male connector, so that quick docking can be achieved. After docking, the locking handle 8 is released, and the female connector sleeve 2 drives the male connector to retract into the female connector housing 1. At the same time, the ball presses against the ball under the action of the limiting step 10, and the ball is stably stuck in a circle of grooves of the male connector. The limiting pin 6 also falls into the groove of the female connector sleeve 2, further locking it. When the male connector retracts, it pushes the annular ring body, and the annular ring body moves the valve core 5 to the left through the push rod. At this time, the female connector sleeve 2 is completely connected with the male connector ( Figure 6 As shown), liquid medium transportation can be achieved.

[0029] In the above-mentioned embodiment, the female connector shell 1 is provided with a through pin hole, and the female connector sleeve 2 is provided with a groove 9 corresponding to the pin hole. The limit pin passes through the pin hole and falls on the groove to realize self-resetting locking. When the limit pin is pulled out, there is no interference between the female connector shell 1 and the female connector sleeve 2, and the two can move relative to each other to release the lock. When the limit pin is inserted, the female connector shell 1 and the female connector sleeve 2 are locked by the limit pin, that is, locking is realized, thereby preventing detachment or accidental disconnection.

[0030] In the above embodiment, a connecting rod mechanism is installed outside the female connector housing 1 and the female connector sleeve 2, and the connecting rod mechanism includes a handle, and the two ends of the handle are hinged on both sides of the female connector sleeve 2. One end of the first connecting rod 13 is hinged to the handle, and the other end is hinged to the female connector sleeve 2. One end of the second connecting rod 11 is hinged to the handle, and the other end is hinged to the female connector housing 1. The user can operate the handle to Figure 2 It is observed that when the handle is pulled to the left, the female connector sleeve 2 extends from the female connector housing 1, and when released, the female connector sleeve 2 retracts into the female connector housing 1.

[0031] The above are all preferred implementations of the present invention. For ordinary technicians in this technical field, without departing from the principle of the present invention, various equivalent modifications to the present invention belong to the protection scope of the claims attached to this application.

Claims

1. A self-closing locking anti-drop device for liquefied hydrocarbons, characterized by: The invention comprises a female connector housing (1), wherein a female connector sleeve (2) is installed in the female connector housing (1), a plurality of ball grooves are provided on the circumference of the inner tube wall on the right side of the sleeve (2), balls (3) are installed in a circle of ball grooves, a push piece (4) is installed on the left side of the balls (3), the push piece (4) is connected to a self-closing valve core (5), the self-closing valve core is connected to a push rod via a spring (7), locking handles (8) are installed on the outer sides of the sleeve (2) via a connecting rod mechanism, and a limit pin (6) is provided between the female connector housing (1) and the female connector sleeve (2).

2. The self-closing and locking anti-dropping device for liquefied hydrocarbons according to claim 1 is characterized in that: The female connector housing (1) is provided with a through pin hole, and the female connector sleeve (2) is provided with a groove (9) corresponding to the pin hole, and the limit pin penetrates the pin hole and falls on the groove to realize self-resetting locking.

3. The self-closing and locking anti-dropping device for liquefied hydrocarbons according to claim 1 or 2, characterized in that: A limiting step (10) is provided between the female connector housing (1) and the female connector sleeve (2).

4. The self-closing and locking anti-dropping device for liquefied hydrocarbons according to claim 1 is characterized in that: The female joint sleeve (2) is arranged corresponding to the valve core, and both are in a conical shape.

5. The self-closing and locking anti-dropping device for liquefied hydrocarbons according to claim 1 is characterized in that: The push piece (4) is a ring-shaped ring body, and the middle of the ring body is connected to the self-closing valve core (5) through a push rod.

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