Rotary joint for fluid loading and unloading arm

Abstract

The utility model discloses a rotary joint for a fluid loading and unloading arm, which relates to the technical field of fluid loading and unloading arms and comprises a joint body, the left surface of the joint body is fixedly connected with a fixed pipe, the left surface of the fixed pipe is movably sleeved with a movable pipe, and the left surface of the movable pipe is fixedly connected with a connecting ring. When the connector body is connected with a second connecting pipe for use, the second connecting pipe and the flange plate fixed to the connecting ring are fixed through a set of bolts, the tightness in the use process is guaranteed, the movable pipe is fixed to the right side of the connecting ring, and the movable pipe is movably clamped in the fixed pipe through the two limiting blocks fixed to the movable pipe. A movable pipe is inwards extruded to the bottom end through a second connecting pipe, two limiting blocks push two movable blocks to move together in the inwards extruding process of the movable pipe, two springs are compressed, and the two movable blocks are completely clamped in two limiting grooves at the moment.

Description

Technical Field

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

[0002] The swivel joint for fluid loading and unloading arms is the core component of the loading and unloading arm. It enables the loading and unloading arm to be flexibly connected to the tank truck or storage and transportation pipeline to realize the transmission of liquid media. The structure of this swivel joint is similar to that of a bearing. It is mainly composed of an inner ring, an outer ring, balls and a sealing ring to achieve relative rotation between two sections of rigid pipelines. The design and material selection of the swivel joint for fluid loading and unloading arms must meet the requirements of high safety, flexibility and durability to adapt to the needs of various loading and unloading operations. If the swivel joint is subjected to external collisions and impacts during use, it cannot guarantee the stability of the connection, which may cause the joint to loosen and leak. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a rotary joint for a fluid loading and unloading arm, which solves the problem that if the rotary joint is subjected to external collisions and impacts during use, the connection cannot be guaranteed to be stable, which may cause the joint to loosen and leak.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rotary joint for a fluid loading and unloading arm, comprising a joint body, a fixed tube fixedly connected to the left surface of the joint body, a movable tube movably sleeved on the left surface of the fixed tube, a connecting ring fixedly connected to the left surface of the movable tube, a connecting pipe 2 is provided on the left side of the connecting ring, two card grooves 1 are provided on the inner wall of the fixed tube, limiting grooves are provided on the inner walls of the two card grooves 1, movable blocks are movably connected in the two limiting grooves, fixed blocks are fixedly connected to the inner walls of the two card grooves 1, air valves are provided on the surfaces of the two fixed blocks, a connecting pipe 1 is provided on the right side of the joint body, and the joint body is flange-connected to the connecting pipe 1.

[0007] As an optimal technical solution of the present invention, a flange is fixedly connected to the surface of the connecting ring, a group of bolts is movably sleeved on the surface of the flange, and the flange and the second connecting pipe are fixed by a group of bolts.

[0008] As a preferred technical solution of the present invention, springs are fixedly connected to the surfaces of the two movable blocks, and the two springs are fixedly connected to the two limiting grooves respectively.

[0009] As a preferred technical solution of the present invention, two limit blocks are fixedly connected to the surface of the movable tube, and the two limit blocks are movably engaged with the two clamping grooves respectively.

[0010] As a preferred technical solution of the present invention, the inner walls of the two limit grooves are each provided with a second card slot, the two second card slots are respectively connected to the two first card slots, and the two second card slots are respectively movably connected to the two limit blocks.

[0011] (3) Beneficial effects

[0012] 1. Rotate the connecting tube 2 counterclockwise to drive the movable tube fixed with it to rotate together. After rotating to the top, the two movable blocks are pushed to reset by the elastic force of the two springs. During the resetting process, the two movable blocks will push the two limit blocks to be clamped in the two card slots 2 for limiting. The pressure generated by the two springs can continuously make the movable tube and the fixed tube fit tightly and seal the connection. In this way, even if they are subjected to external collisions and impacts, pressure can be continuously applied to ensure stability, thereby effectively preventing loosening and leakage at the joints.

[0013] 2. The movable tube is integrally inserted into the fixed tube and extends into the joint body. The movable tube fits tightly against the fixed tube, so that the two card slots 1 and the two card slots 2 are in a closed space. Inert gas can be injected into the two card slots 1 and the two card slots 2 through two air valves to isolate the temperature. At the same time, the inert gas can flow into the two limit grooves, thereby protecting the two springs from affecting their service life due to ultra-low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0015] Figure 1 This is the overall structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the movable tube in the utility model;

[0017] Figure 3 This is a structural diagram of the fixed pipe in the utility model;

[0018] Figure 4 This is a structural diagram of the active blocks in the present utility model.

[0019] Legend: 1. Connector body; 2. Fixed pipe; 3. Connecting pipe 1; 4. Movable pipe; 5. Connecting ring; 6. Connecting pipe 2; 7. Limit block; 8. Flange; 9. Bolt; 10. Limit groove; 11. Slot 1; 12. Fixed block; 13. Movable block; 14. Spring; 15. Slot 2; 16. Air valve. DETAILED DESCRIPTION

[0020] The embodiment of the present application provides a rotary joint for a fluid loading and unloading arm, which effectively solves the problem that the rotary joint cannot ensure the stability of the connection if it is subjected to external collisions and impacts during use, which may cause the joint to loosen and leak. The connecting tube 2 6 is rotated counterclockwise to drive the movable tube 4 fixed to it to rotate together. After rotating to the top, the two movable blocks 13 are pushed to reset by the elastic force of the two springs 14. During the resetting process, the two movable blocks 13 will push the two limit blocks 7 to be clamped in the two card slots 2 15 for limiting. The pressure generated by the two springs 14 can continuously make the movable tube 4 and the fixed tube 2 tightly fit and sealed. In this way, even if they are subjected to external collisions and impacts, pressure can be continuously applied to ensure stability, thereby effectively avoiding loosening and leakage of the joint. Example

[0021] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the problem that if the rotary joint is subjected to external collisions and impacts during use, the connection cannot be stable, which may cause the joint to loosen and leak. The overall idea is as follows:

[0022] In response to the problems existing in the prior art, the utility model provides a rotary joint for a fluid loading and unloading arm, including a joint body 1, a fixed tube 2 is fixedly connected to the left surface of the joint body 1, a movable tube 4 is movably sleeved on the left surface of the fixed tube 2, a connecting ring 5 is fixedly connected to the left surface of the movable tube 4, a connecting tube 2 6 is provided on the left side of the connecting ring 5, two card grooves 11 are provided on the inner wall of the fixed tube 2, and limiting grooves 10 are provided on the inner walls of the two card grooves 11, and movable blocks 13 are movably connected in the two limiting grooves 10, and fixed blocks 12 are fixedly connected to the inner walls of the two card grooves 11, and air valves 16 are provided on the surfaces of the two fixed blocks 12, a connecting tube 3 is provided on the right side of the joint body 1, and the joint body 1 is flange-connected to the connecting tube 3. When the joint body 1 is connected to the connecting tube 2 6 for use, the connecting tube 2 6 and the flange plate 8 fixed on the connecting ring 5 are fixed by a group of bolts 9 to ensure tightness during use.

[0023] The surface of the connecting ring 5 is fixedly connected with a flange 8, and the surface of the flange 8 is movably sleeved with a group of bolts 9. The flange 8 and the connecting pipe 2 6 are fixed by a group of bolts 9. The surfaces of the two movable blocks 13 are fixedly connected with springs 14. The two springs 14 are fixedly connected with the two limit grooves 10 respectively. A movable tube 4 is fixed on the right side of the connecting ring 5. The movable tube 4 is movably connected to the fixed tube 2 through the two limit blocks 7 fixed thereon. The movable tube 4 is squeezed inwardly through the connecting pipe 2 6 to the bottom end. During the inward squeezing process of the movable tube 4, the two limit blocks 7 will push the two movable blocks 13 to move together, compressing the two springs 14. The two movable The movable block 13 will now be completely engaged in the two limit grooves 10. At this time, the connecting tube 2 6 is rotated counterclockwise to drive the movable tube 4 fixed thereto to rotate together. After rotating to the top, the two movable blocks 13 are pushed to reset by the elastic force of the two springs 14. During the resetting process, the two movable blocks 13 will push the two limit blocks 7 to be engaged in the two clamping grooves 2 15 for limiting. The pressure generated by the two springs 14 can continuously make the movable tube 4 and the fixed tube 2 tightly fit and sealed. In this way, even if they are subjected to external collisions and impacts, pressure can be continuously applied to ensure stability, thereby effectively avoiding loosening and leakage at the joints.

[0024] Two limit blocks 7 are fixedly connected to the surface of the movable tube 4, and the two limit blocks 7 are movably engaged with the two card slots 11 respectively. The inner walls of the two limit slots 10 are provided with card slots 2 15, and the two card slots 2 15 are respectively communicated with the two card slots 11. The two card slots 2 15 are movably engaged with the two limit blocks 7 respectively. The movable tube 4 runs through the fixed tube 2 as a whole and extends into the joint body 1. The movable tube 4 fits tightly with the fixed tube 2, so that the two card slots 11 and the two card slots 2 15 are in a confined space. Inert gas can be injected into the two card slots 11 and the two card slots 2 15 through two air valves 16 to isolate the temperature. At the same time, the inert gas can flow into the two limit slots 10, thereby protecting the two springs 14 from affecting the service life due to ultra-low temperature.

[0025] Working principle:

[0026] When the joint body 1 is connected to the connecting pipe 2 6 for use, the connecting pipe 2 6 is fixed to the flange 8 fixed on the connecting ring 5 by a set of bolts 9 to ensure tightness during use. A movable pipe 4 is fixed on the right side of the connecting ring 5. The movable pipe 4 is movably connected to the fixed pipe 2 through the two limit blocks 7 fixed thereon. The movable pipe 4 is squeezed inwardly by the connecting pipe 2 6 until the bottom end. During the inward squeezing process of the movable pipe 4, the two limit blocks 7 will push the two movable blocks 13 to move together, compressing the two springs 14. The two movable blocks 13 will now be completely connected to the two limit grooves 10. At this time, the connecting pipe 2 6 is rotated counterclockwise to drive the movable pipe 4 fixed thereto to rotate together. After rotating to the top, the two movable blocks 13 are pushed to reset by the elastic force of the two springs 14. The two movable blocks 13 are reset during the resetting process. During the process, the two limit blocks 7 will be pushed to be clamped in the two card slots 15 for limiting. The pressure generated by the two springs 14 can continuously make the movable tube 4 and the fixed tube 2 tightly fit and sealed. In this way, even if they are subjected to external collisions and impacts, pressure can be continuously applied to ensure stability, thereby effectively avoiding loosening and leakage at the joint. The movable tube 4 is entirely passed through the fixed tube 2 and extends into the joint body 1. The movable tube 4 fits tightly with the fixed tube 2, so that the two card slots 11 and the two card slots 2 15 are in a closed space. Inert gas can be injected into the two card slots 11 and the two card slots 2 15 through the two air valves 16 to isolate the temperature. At the same time, the inert gas can flow into the two limit grooves 10, thereby protecting the two springs 14 from affecting the service life due to ultra-low temperature.

[0027] Finally, it should be noted that the above embodiments are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A rotary joint for a fluid loading and unloading arm, comprising a joint body (1), characterized in that: The left surface of the joint body (1) is fixedly connected to a fixed tube (2), the left surface of the fixed tube (2) is movably sleeved with a movable tube (4), and the left surface of the movable tube (4) is fixedly connected to a connecting ring (5); Wherein, a connecting pipe 2 (6) is provided on the left side of the connecting ring (5), two card slots 1 (11) are provided on the inner wall of the fixing pipe (2), and the inner walls of the two card slots 1 (11) are provided with limiting grooves (10), and the two limiting grooves (10) are both movably connected with movable blocks (13), and the inner walls of the two card slots 1 (11) are both fixedly connected with fixed blocks (12), and the surfaces of the two fixed blocks (12) are both provided with air valves (16).

2. A rotary joint for a fluid loading and unloading arm according to claim 1, characterized in that: A connecting pipe 1 (3) is provided on the right side of the joint body (1); Wherein, the joint body (1) is flange-connected to the connecting pipe 1 (3).

3. A rotary joint for a fluid loading and unloading arm according to claim 1, characterized in that: A flange (8) is fixedly connected to the surface of the connecting ring (5), and a group of bolts (9) are movably sleeved on the surface of the flange (8); The flange (8) and the second connecting pipe (6) are fixed by a set of bolts (9).

4. A rotary joint for a fluid loading and unloading arm according to claim 1, characterized in that: The surfaces of the two movable blocks (13) are both fixedly connected with springs (14); The two springs (14) are respectively fixedly connected to the two limiting slots (10).

5. The rotary joint for a fluid loading and unloading arm according to claim 1, wherein: Two limit blocks (7) are fixedly connected to the surface of the movable tube (4); The two limit blocks (7) are respectively movably engaged with the two card slots (11).

6. A rotary joint for a fluid loading and unloading arm according to claim 1, characterized in that: The inner walls of the two limiting grooves (10) are each provided with a second clamping groove (15), and the two second clamping grooves (15) are respectively connected to the two first clamping grooves (11); The two second card slots (15) are respectively movably connected to the two limit blocks (7).

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