Rotary joint for low-loss liquid loading and unloading arm

Abstract

The utility model discloses a rotary joint for a low-loss liquid loading and unloading arm, which comprises a mounting sleeve and a bottom sleeve, a connecting pipe is mounted on the outer wall of the adjacent side of the mounting sleeve through a bolt, a rotary head is inserted into the connecting pipe and the mounting sleeve, and moving grooves are formed in the mounting sleeve and the bottom sleeve. A screw rod is movably mounted in the moving groove through a bearing, an auxiliary block is in threaded connection with the outer wall of the screw rod, a moving groove is formed in the inner wall of one side of the moving groove, a positioning groove is formed in the inner wall of the moving groove, a positioning spring is arranged in the positioning groove, and a positioning rod connected with the positioning spring is inserted into the positioning groove. Through the arrangement of the screw rod, when the screw rod is rotated, the screw rod can be in threaded connection with an auxiliary block, so that the auxiliary block can drive a positioning rod to move, the positioning rod can be inserted into the rotating head, an operator can conveniently fix materials, and the positioning rod can be effectively driven to reset under the action of a positioning spring.

Description

Technical Field

[0001] The utility model relates to the technical field of loading and unloading arms, in particular to a rotary joint for a low-loss liquid loading and unloading arm. Background Art

[0002] The crane pipe is a special equipment used in the fluid loading and unloading process of the petrochemical industry, also known as the fluid loading and unloading arm. The crane pipe is a retractable and movable pipe, mostly used for liquid loading and unloading at petroleum and chemical terminals. The media in the pipe are oil, water, etc. It is divided into many types. Compared with the old hose, it has the advantages of high safety and flexibility.

[0003] Chinese patent number CN212361159U discloses a rotary joint for a low-loss liquid loading and unloading arm, comprising a front end cover, an outer shell, a liquid pipe and a rear end cover, wherein the liquid pipe is rotatably connected to the inner shell, the front end cover and the rear end cover are tightly connected to the two ends of the outer shell by fastening screws respectively, and the middle part of the inner wall of the outer shell and the outer wall of the liquid pipe are rotatably connected by a plurality of cylindrical rollers, and the cylindrical rollers are evenly arranged along the circumference of the liquid pipe.

[0004] During use, the above-mentioned equipment and the equipment on the market generally utilize the connection between the outer shell and the rear end cover to rotate with the outer wall of the liquid pipe through a ball, which can not only reduce the wear of the outer shell, but also ensure its rotation flexibility. A dynamic sealing ring is provided at the connection between the liquid pipe and the rear end cover to increase its sealing performance and reduce the potential risk of liquid leakage. It has a high application and promotion value.

[0005] However, during the operation of the above-mentioned device, the parts are generally directly combined and fixed using structures such as bolts. However, such a structure cannot effectively limit the rotating head during operation, thereby reducing the fixing effect of the material, and the existing equipment cannot store the lubricating oil well, thereby reducing the lubricity of the rotating head during rotation. Therefore, it is urgent to design a low-loss rotary joint for liquid loading and unloading arms to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a low-loss rotary joint for a liquid loading and unloading arm.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A rotary joint for a low-loss liquid loading and unloading arm comprises a mounting sleeve and a bottom sleeve, a connecting pipe is mounted on an outer wall adjacent to one side of the mounting sleeve by means of bolts, a swivel is plugged into the connecting pipe and the mounting sleeve, a movable groove is provided inside the mounting sleeve and the bottom sleeve, a screw is movably installed inside the movable groove by means of a bearing, an auxiliary block is threadedly connected on the outer wall of the screw, a motion groove is provided on an inner wall on one side of the movable groove, a positioning groove is provided on the inner wall of the movable groove, a positioning spring is arranged inside the positioning groove, a positioning rod connected to the positioning spring is plugged into the positioning groove.

[0009] The key concept of the above technical solution is: through the setting of the screw, when the screw is rotated, the screw can utilize the threaded connection with the auxiliary block, so that the auxiliary block can drive the positioning rod to move, and the positioning rod can be inserted into the inside of the rotating head, which is convenient for the operator to fix the material, and the positioning spring can effectively drive the positioning rod to reset.

[0010] Furthermore, an oil groove is provided inside the connecting pipe and the bottom sleeve, and a spring is inserted inside the oil groove.

[0011] Furthermore, a push block is arranged at one end adjacent to the spring, and an injection seat connected to the oil groove is arranged on the outer wall of the connecting pipe and the bottom sleeve close to the oil groove.

[0012] Furthermore, a plurality of ball grooves are provided on the inner side walls of the connecting pipe and the bottom sleeve, and the ball grooves are distributed in an annular structure at equal distances.

[0013] Furthermore, a ball is arranged inside the ball groove, and the ball fits the rotor.

[0014] Furthermore, a sealing groove is provided on the inner wall of the connecting pipe and the outer wall of the rotating head, and a sealing ring is provided inside the sealing groove.

[0015] The beneficial effects of the utility model are:

[0016] 1. Through the provided screw, when the screw is rotated, the screw can utilize the threaded connection with the auxiliary block, so that the auxiliary block can drive the positioning rod to move, and the positioning rod can be inserted into the inside of the rotary head, which is convenient for the operator to fix the material, and the positioning spring can effectively drive the positioning rod to reset.

[0017] 2. Through the setting of the push block, when the push block contacts the rotor, the push block will squeeze the spring, so that the lubricating oil can leak into the outer wall of the rotor, and the setting of the ball and the ball groove can make the rotation of the rotor smoother, and the setting of the sealing ring and the sealing groove can improve the sealing of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic structural diagram of a low-loss rotary joint for a liquid loading and unloading arm proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the planar structure of a mounting sleeve and a bottom sleeve of a rotary joint for a low-loss liquid loading and unloading arm proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the planar structure of a connecting pipe of a rotary joint for a low-loss liquid loading and unloading arm proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the sealing ring and sealing groove structure of a rotary joint for a low-loss liquid loading and unloading arm proposed by the utility model;

[0022] Figure 5 The utility model discloses a schematic diagram of the internal structure of a moving groove and a motion groove of a rotary joint for a low-loss liquid loading and unloading arm.

[0023] In the figure: 1 mounting sleeve, 2 connecting pipe, 3 rotating head, 4 moving groove, 5 screw, 6 auxiliary block, 7 motion groove, 8 positioning groove, 9 positioning spring, 10 positioning rod, 11 oil groove, 12 spring, 13 push block, 14 injection seat, 15 ball groove, 16 ball, 17 sealing groove, 18 sealing ring, 19 bottom sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] Please also see Figures 1 to 5 A low-loss rotary joint for a liquid loading and unloading arm comprises a mounting sleeve 1 and a bottom sleeve 19, a connecting pipe 2 is installed on an outer wall adjacent to one side of the mounting sleeve 1 by bolts, and a swivel 3 is plugged into the connecting pipe 2 and the mounting sleeve 1, a moving groove 4 is provided inside the mounting sleeve 1 and the bottom sleeve 19, and a screw 5 is movably installed inside the moving groove 4 through a bearing, an auxiliary block 6 is threadedly connected to the outer wall of the screw 5, and a moving groove 7 is provided on an inner wall of one side of the moving groove 4, a positioning groove 8 is provided on the inner wall of the moving groove 4, and a positioning spring 9 is arranged inside the positioning groove 8, and a positioning rod 10 connected to the positioning spring 9 is plugged into the positioning groove 8, when the screw 5 is rotated, the screw 5 utilizes the threaded connection with the auxiliary block 6, so that the auxiliary block 6 can drive the positioning rod 10 to move, and the positioning spring 9 will be stretched during the movement of the positioning rod 10.

[0028] Furthermore, an oil groove 11 is provided inside the connecting pipe 2 and the bottom sleeve 19 , and a spring 12 is inserted into the oil groove 11 . The opening of the oil groove 11 can limit the installation position of the spring 12 .

[0029] Furthermore, a push block 13 is provided at one end adjacent to the spring 12, and an injection seat 14 connected to the oil groove 11 is provided on the outer wall of the connecting pipe 2 and the bottom sleeve 19 close to the oil groove 11. The setting of the injection seat 14 can provide an injection position for the injection of lubricating oil, and the setting of the push block 13 can seal the oil groove 11.

[0030] Furthermore, a plurality of ball grooves 15 are provided on the inner side walls of the connecting pipe 2 and the bottom sleeve 19 , and the ball grooves 15 are distributed in an annular structure at equal distances. The opening of the ball grooves 15 can limit the installation position of the balls 16 .

[0031] Furthermore, a ball 16 is disposed inside the ball groove 15 , and the ball 16 fits with the turret 3 . When the turret 3 is rotated, the turret 3 can utilize the action of the ball 16 to improve the stability of the turret 3 during rotation.

[0032] Furthermore, a sealing groove 17 is provided on the inner wall of the connecting pipe 2 and the outer wall of the rotating head 3, and a sealing ring 18 is provided inside the sealing groove 17. During the rotation of the rotating head 3, the sealing ring 18 and the sealing groove 17 can be used to improve the sealing performance of the device.

[0033] By adopting the above, through the setting of the push block 13, when the push block 13 contacts the rotary head 3, the push block 13 will squeeze the spring 12, so that the lubricating oil can leak out of the outer wall of the rotary head 3, and the setting of the ball 16 and the ball groove 15 can make the rotation of the rotary head 3 smoother, and the setting of the sealing ring 18 and the sealing groove 17 can improve the sealing performance of the device.

[0034] Several preferred embodiments or application examples are listed below to help those skilled in the art better understand the technical content of the utility model and the technical contribution made by the utility model relative to the prior art:

[0035] Example 1

[0036] A low-loss rotary joint for a liquid loading and unloading arm comprises a mounting sleeve 1 and a bottom sleeve 19, a connecting pipe 2 is installed on an outer wall adjacent to one side of the mounting sleeve 1 by bolts, and a swivel 3 is inserted into the connecting pipe 2 and the mounting sleeve 1, a movable groove 4 is provided inside the mounting sleeve 1 and the bottom sleeve 19, and a screw 5 is movably installed inside the movable groove 4 through a bearing, an auxiliary block 6 is threadedly connected to the outer wall of the screw 5, and a moving groove 7 is provided on an inner wall of one side of the movable groove 4, a positioning groove 8 is provided on the inner wall of the movable groove 4, and a positioning spring 9 is provided inside the positioning groove 8, and a positioning rod 10 connected to the positioning spring 9 is inserted into the positioning groove 8, when the screw 5 is rotated, the screw 5 utilizes the threaded connection with the auxiliary block 6, so that the auxiliary block 6 can drive the positioning rod 10 to move, and the positioning spring 9 will be stretched during the movement of the positioning rod 10.

[0037] Among them, the connecting pipe 2 and the bottom sleeve 19 are provided with an oil groove 11, and a spring 12 is inserted into the oil groove 11. The opening of the oil groove 11 can limit the installation position of the spring 12; a push block 13 is provided at one end adjacent to the spring 12, and an injection seat 14 connected to the oil groove 11 is provided on the outer wall of the connecting pipe 2 and the bottom sleeve 19 close to the oil groove 11. The setting of the injection seat 14 can provide an injection position for the injection of lubricating oil, and the setting of the push block 13 can block the oil groove 11; a plurality of ball grooves 15 are provided on the inner side walls of the connecting pipe 2 and the bottom sleeve 19. The ball grooves 15 are distributed in an annular structure with equal distances, and the opening of the ball grooves 15 can limit the installation position of the ball 16; the ball 16 is arranged inside the ball groove 15, and the ball 16 is in contact with the turret 3. When the turret 3 is rotated, the turret 3 can use the action of the ball 16 to improve the stability of the turret 3 during rotation; sealing grooves 17 are opened on the inner wall of the connecting tube 2 and the outer wall of the turret 3, and a sealing ring 18 is arranged inside the sealing groove 17. During the rotation of the turret 3, the action of the sealing ring 18 and the sealing groove 17 can be used to improve the sealing performance of the device.

[0038] Working principle: When in use, first insert the swivel 3 into the inside of the mounting sleeve 1 and the bottom sleeve 19, and connect the bottom sleeve 19 with the mounting sleeve 1. At this time, the swivel 3 will contact the push block 13. When the push block 13 contacts the swivel 3, the push block 13 will squeeze the spring 12. When the spring 12 is slidably connected to the inside of the oil groove 11, the lubricating oil will enter the gap between the swivel 3 and the connecting pipe 2. Then, by rotating the screw 5, during the rotation of the screw 5, the threaded connection with the auxiliary block 6 is utilized to make the auxiliary block 6 drive the positioning rod 10 to move. During the movement of the positioning rod 10, the positioning spring 9 will be stretched, so that the positioning rod 10 is inserted into the circular limit groove on one side of the swivel 3, and during the rotation of the swivel 3, the ball 16 is used to improve the smoothness of the rotation of the swivel 3, and during the rotation of the swivel 3, the sealing ring 18 and the sealing groove 17 are used to improve the sealing of the device.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-loss rotary joint for a liquid loading and unloading arm, comprising a mounting sleeve (1) and a bottom sleeve (19), characterized in that: A connecting pipe (2) is installed on the outer wall of one side adjacent to the installation sleeve (1) by means of bolts, and a swivel (3) is inserted into the connecting pipe (2) and the installation sleeve (1), a movable groove (4) is provided inside the installation sleeve (1) and the bottom sleeve (19), and a screw rod (5) is movably installed inside the movable groove (4) through a bearing, an auxiliary block (6) is threadedly connected on the outer wall of the screw rod (5), and a motion groove (7) is provided on the inner wall of one side of the movable groove (4), a positioning groove (8) is provided on the inner wall of the movable groove (4), and a positioning spring (9) is arranged inside the positioning groove (8), and a positioning rod (10) connected to the positioning spring (9) is inserted into the positioning groove (8).

2. A low-loss liquid loading and unloading arm rotary joint according to claim 1, characterized in that: An oil groove (11) is provided inside the connecting pipe (2) and the bottom sleeve (19), and a spring (12) is inserted inside the oil groove (11).

3. A low-loss liquid loading and unloading arm rotary joint according to claim 2, characterized in that: A push block (13) is provided at one end adjacent to the spring (12), and an injection seat (14) connected to the oil groove (11) is provided on the outer wall of the connecting pipe (2) and the bottom sleeve (19) close to the oil groove (11).

4. A low-loss liquid loading and unloading arm rotary joint according to claim 1, characterized in that: A plurality of ball grooves (15) are provided on the inner side walls of the connecting pipe (2) and the bottom sleeve (19), and the ball grooves (15) are distributed in an annular structure at equal distances.

5. A low-loss liquid loading and unloading arm rotary joint according to claim 4, characterized in that: A ball (16) is arranged inside the ball groove (15), and the ball (16) fits the rotating head (3).

6. A low-loss liquid loading and unloading arm rotary joint according to claim 1, characterized in that: A sealing groove (17) is provided on the inner wall of the connecting pipe (2) and the outer wall of the rotating head (3), and a sealing ring (18) is provided inside the sealing groove (17).

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