Quick-release type pipeline connecting device for central air conditioner

Abstract

The utility model belongs to the technical field of pipeline connection, and discloses a quick release type pipeline connecting device for a central air conditioner, which comprises a first connecting pipe and a second connecting pipe, when the first connecting pipe and the second connecting pipe are in butt joint, a first butt joint ring and a second butt joint ring can be aligned and abut against each other, and a movable lantern ring slides along a guide rod. The movable lantern ring is made to abut against the first butt joint ring, the fixing bolts on the movable lantern ring are sequentially screwed, the fixing bolts are screwed into the threaded holes in the first butt joint ring, and therefore the purpose that the movable lantern ring and the first butt joint ring are connected and fixed is achieved, and the first connecting pipe and the second connecting pipe are connected. And through a rubber layer wrapping the surface of the movable lantern ring, when the movable lantern ring and the first butt joint ring are in a connected and fixed state, the sealing performance between the movable lantern ring and the contact face between the first butt joint ring and the second butt joint ring is improved, and then the connecting sealing performance of the first connecting pipe and the second connecting pipe is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, and in particular relates to a quick-detachable pipeline connection device for a central air conditioner. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Unlike traditional refrigerant air conditioners, this system centrally processes air to meet comfort requirements. The central air conditioning system has many components, and many components need to be connected by pipes.

[0003] The existing central air conditioning pipe connection method is relatively complicated and has poor sealing effect, which is prone to leakage, resulting in energy waste and inconvenience in use.

[0004] The patent with announcement number CN215982882U discloses a central air-conditioning pipe connection device, including a connecting pipe, both ends of the connecting pipe are provided with installation slots, both ends of the connecting pipe are provided with installation pipes, one end of the installation pipe is cooperated and connected with the installation slot, both ends of the connecting pipe are provided with a first limiting ring, the side wall of the installation pipe is provided with a second limiting ring, the second limiting ring conflicts with the first limiting ring, and the outer cover of the second limiting ring and the first limiting ring is provided with a fixing ring. Compared with the prior art, the central air-conditioning pipe connection method is more complicated, and the sealing effect is poor, which is easy to cause leakage, resulting in energy waste and inconvenient use. In the utility model, the pipe connection can be conveniently carried out and the sealing effect is guaranteed.

[0005] However, when the device is docked with the pipeline, it needs to be fixed by inserting the pipe and the fixing ring. The fixing method is relatively cumbersome and the disassembly and assembly efficiency is average. Summary of the invention

[0006] The purpose of the utility model is to provide a quick-detachable central air-conditioning pipe connection device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-detachable pipe connection device for a central air conditioner, comprising a first connecting pipe and a second connecting pipe, wherein a first docking ring is arranged on the first connecting pipe, a second docking ring is arranged on the second connecting pipe, four fixing blocks are evenly arranged along the circumferential direction on the second connecting pipe, a guide rod is connected between the fixing block and the second docking ring, a same movable sleeve is slidably installed on the four guide rods, four through holes are evenly arranged along the circumferential direction on the movable sleeve, fixing bolts are slidably arranged in the through holes, a threaded hole matching the fixing bolt is provided on the side of the first docking ring close to the second docking ring, and the outer surface of the movable sleeve is covered with a rubber layer.

[0008] Preferably, four docking blocks are evenly arranged on the movable collar along the circumferential direction, and the first docking ring is provided with four docking grooves matched with the docking blocks.

[0009] Preferably, a rotation hole is provided in the docking block, a rotation shaft is rotatably installed in the rotation hole, and a limit plate is installed on the top of the rotation shaft.

[0010] Preferably, an annular groove is formed on a side of the second docking ring close to the first docking ring, and a rubber sealing ring is arranged in the annular groove.

[0011] Preferably, the movable collar is provided with four sliding holes, and the four sliding holes are evenly arranged on the movable collar along the circumferential direction.

[0012] Preferably, the cross-section of the movable collar is L-shaped, and the notch of the movable collar is engaged with the second docking ring.

[0013] Preferably, the diameter of the second docking ring is smaller than that of the first docking ring, and the diameter of the movable ring is the same as that of the first docking ring.

[0014] The beneficial effects of the utility model are:

[0015] In the utility model, by providing the first docking ring and the second docking ring, when the first connecting tube and the second connecting tube are docked, the first docking ring and the second docking ring are aligned and pressed against each other, the movable sleeve is slid along the guide rod, and the movable sleeve is pressed against the first docking ring, and the fixing bolts on the movable sleeve are tightened in turn, so that the fixing bolts are screwed into the threaded holes in the first docking ring, thereby achieving the purpose of connecting and fixing the movable sleeve and the first docking ring, and completing the connection between the first connecting tube and the second connecting tube, and through the rubber layer coated on the surface of the movable sleeve, when the movable sleeve and the first docking ring are in a connected and fixed state, the sealing between the contact surfaces between the movable sleeve and the first docking ring and the second docking ring is improved, thereby improving the connection sealing between the first connecting tube and the second connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the main body of a quick-detachable central air-conditioning pipe connection device proposed by the utility model;

[0017] Figure 2 It is a side cross-sectional structural schematic diagram of a quick-detachable central air-conditioning pipe connection device proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of a quick-detachable central air-conditioning pipe connection device proposed by the utility model;

[0019] Figure 4The utility model provides a schematic side cross-sectional structure diagram of a rotating shaft, a movable sleeve and other structures of a quick-detachable central air-conditioning pipe connection device.

[0020] In the figure: 1. first connecting tube; 2. second connecting tube; 3. first docking ring; 4. movable sleeve; 5. docking groove; 6. docking block; 7. fixed block; 8. guide rod; 9. limit plate; 10. sliding hole; 11. threaded hole; 12. through hole; 13. fixing bolt; 14. rotating shaft; 15. rotating hole; 16. second docking ring; 17. annular groove; 18. rubber sealing ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A quick-detachable central air-conditioning pipe connection device comprises a first connecting pipe 1 and a second connecting pipe 2, wherein a first docking ring 3 is arranged on the first connecting pipe 1, a second docking ring 16 is arranged on the second connecting pipe 2, four fixing blocks 7 are evenly arranged along the circumferential direction on the second connecting pipe 2, a guide rod 8 is connected between the fixing block 7 and the second docking ring 16, a same movable sleeve 4 is slidably mounted on the four guide rods 8, four through holes 12 are evenly arranged along the circumferential direction on the movable sleeve 4, fixing bolts 13 are slidably arranged in the through holes 12, a threaded hole 11 matched with the fixing bolt 13 is opened on the side of the first docking ring 3 close to the second docking ring 16, and the outer surface of the movable sleeve 4 is covered with a rubber layer.

[0023] By means of the first docking ring 3 and the second docking ring 16, when the first connecting pipe 1 and the second connecting pipe 2 are docked, the first docking ring 3 and the second docking ring 16 can be aligned and pressed together, the movable sleeve 4 can be slid along the guide rod 8, and the movable sleeve 4 can be pressed against the first docking ring 3, and the fixing bolts 13 on the movable sleeve 4 can be tightened in turn, so that the fixing bolts 13 are screwed into the threaded holes 11 in the first docking ring 3, thereby achieving the purpose of connecting and fixing the movable sleeve 4 and the first docking ring 3, and completing the connection between the first connecting pipe 1 and the second connecting pipe 2, and through the rubber layer coated on the surface of the movable sleeve 4, when the movable sleeve 4 and the first docking ring 3 are in a connected and fixed state, the sealing between the contact surfaces between the movable sleeve 4 and the first docking ring 3 and the second docking ring 16 can be improved, thereby improving the connection sealing between the first connecting pipe 1 and the second connecting pipe 2.

[0024] Specifically, in this embodiment, four docking blocks 6 are evenly arranged along the circumferential direction on the movable collar 4 , and four docking grooves 5 matched with the docking blocks 6 are formed on the first docking ring 3 .

[0025] The docking groove 5 and the docking block 6 are provided so that the movable collar 4 can be easily aligned with the first docking ring 3 when docking. During docking, the docking block 6 is inserted into the docking groove 5 to limit the angle of the movable collar 4 and the first docking ring 3.

[0026] Specifically, in this embodiment, a rotation hole 15 is opened in the docking block 6 , a rotation shaft 14 is rotatably installed in the rotation hole 15 , and a limit plate 9 is installed on the top of the rotation shaft 14 .

[0027] By arranging the limit plate 9 and the rotating shaft 14, after the movable collar 4 and the first docking ring 3 are docked, the limit plate 9 can be rotated to a certain angle to lock the docking block 6 in the docking groove 5, thereby achieving the initial limit fixation between the movable collar 4 and the first docking ring 3. At this time, the fixing bolts 13 can be screwed in sequence to achieve the connection and fixation between the movable collar 4 and the first docking ring 3.

[0028] Specifically, in this embodiment, an annular groove 17 is formed on a side of the second docking ring 16 close to the first docking ring 3 , and a rubber sealing ring 18 is arranged in the annular groove 17 .

[0029] The annular groove 17 and the rubber sealing ring 18 can improve the sealing performance between the first docking ring 3 and the second docking ring 16 .

[0030] Specifically, in this embodiment, four sliding holes 10 are formed on the movable collar 4 , and the four sliding holes 10 are evenly arranged on the movable collar 4 along the circumferential direction.

[0031] The sliding hole 10 is provided so that the movable collar 4 can slide smoothly on the guide rod 8 .

[0032] Specifically, in this embodiment, the cross section of the movable collar 4 is L-shaped, and the notch of the movable collar 4 is engaged with the second docking ring 16 .

[0033] Specifically, in this embodiment, the diameter of the second docking ring 16 is smaller than that of the first docking ring 3 , and the diameter of the movable collar 4 is the same as that of the first docking ring 3 .

[0034] 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 quick-release central air conditioner pipe connection device, comprising a first connecting pipe and a second connecting pipe, characterized in that: A first docking ring is arranged on the first connecting tube, a second docking ring is arranged on the second connecting tube, four fixed blocks are evenly arranged on the second connecting tube in a circumferential direction, a guide rod is connected between the fixed block and the second docking ring, a same movable sleeve is slidably installed on the four guide rods, four through holes are evenly arranged on the movable sleeve in a circumferential direction, fixing bolts are slidably arranged in the through holes, a threaded hole matched with the fixing bolt is provided on one side of the first docking ring close to the second docking ring, and the outer surface of the movable sleeve is covered with a rubber layer.

2. A quick-release central air-conditioning pipe connection device according to claim 1, characterized in that: Four docking blocks are evenly arranged on the movable sleeve ring along the circumferential direction, and four docking grooves matched with the docking blocks are opened on the first docking ring.

3. A quick-release central air-conditioning pipe connection device according to claim 2, characterized in that: A rotating hole is provided in the docking block, a rotating shaft is rotatably installed in the rotating hole, and a limiting plate is installed on the top of the rotating shaft.

4. A quick-release central air-conditioning pipe connection device according to claim 1, characterized in that: An annular groove is formed on one side of the second docking ring close to the first docking ring, and a rubber sealing ring is arranged in the annular groove.

5. A quick-release central air-conditioning pipe connection device according to claim 1, characterized in that: The movable sleeve is provided with four sliding holes, which are evenly arranged on the movable sleeve along the circumferential direction.

6. A quick-release central air-conditioning pipe connection device according to claim 1, characterized in that: The cross section of the movable collar is L-shaped, and the notch of the movable collar is meshed with the second docking ring.

7. A quick-release central air-conditioning pipe connection device according to claim 1, characterized in that: The diameter of the second docking ring is smaller than that of the first docking ring, and the diameter of the movable ring is the same as that of the first docking ring.

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