Safe heating refrigerant pipe connecting device

Abstract

The utility model discloses a safe liquid adding refrigerant pipe connecting device which comprises a connector arranged on a safe liquid adding valve and a connecting sleeve arranged on a connecting pipe, a plurality of protrusions are arranged on the outer side of the connector, a plurality of clamping grooves matched with the protrusions are formed in the inner side of the connecting sleeve, a protective layer is fixed to the outer side of the connecting sleeve, and the protective layer is fixed to the outer side of the connecting sleeve. The protrusion comprises an inclined face and an abutting face, the front end of the inclined face is the lower end, the abutting face is located at the higher end of the inclined face, and the abutting face is perpendicular to the axis of the connector. Compared with the prior art, the safety liquid adding valve has the advantages that the connector with the protrusion is arranged on the safety liquid adding valve and then inserted into the connecting sleeve, provided with the clamping groove, of the connecting pipe, and therefore the safety liquid adding valve and the connecting pipe can be rapidly connected. The connection mode is simpler, time can be effectively saved, and the liquid adding efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerant pipe connection, in particular to a safe liquid-adding refrigerant pipe connection device. Background Art

[0002] The existing liquid adding device needs to first connect the safety liquid adding valve to the refrigerant pipe through a threaded connection, and then connect the refrigerant pipe to the refrigeration equipment. The threaded connection method requires many turns, which takes a lot of time and affects the liquid adding efficiency. Utility Model Content

[0003] The utility model provides a safe liquid-adding refrigerant pipe connecting device, which is used to solve the problem that the current liquid-adding device uses a threaded connection method to connect the refrigerant pipe and the safety liquid-adding valve, which results in a lot of time consumption.

[0004] The utility model provides a safe liquid-adding refrigerant pipe connecting device, comprising a connecting head arranged on a safe liquid-adding valve and a connecting sleeve arranged on a connecting pipe, the outer side of the connecting head is provided with a plurality of protrusions, the inner side of the connecting sleeve is provided with a plurality of grooves matched with the protrusions, a protective layer is fixed to the outer side of the connecting sleeve, the protrusion comprises an inclined surface and an abutting surface, the front end of the inclined surface is a lower end, the abutting surface is located at a higher end of the inclined surface, and the abutting surface is perpendicular to the axis of the connecting head.

[0005] Preferably, the front end of the protective layer wraps around the end of the connecting sleeve.

[0006] Preferably, the rear end of the protective layer covers a portion of the connecting pipe.

[0007] Preferably, a stamping groove is provided in the middle section of the protective layer.

[0008] Preferably, the bottom of the punching groove is provided with ribs.

[0009] Preferably, the protective layer is made of copper.

[0010] Preferably, a transition surface is provided between the inclined surface and the abutting surface, and the transition surface is parallel to the axis of the connector.

[0011] Preferably, the two connecting sleeves are respectively arranged at two ends of the connecting pipe.

[0012] Preferably, it also includes a connecting nut and a first joint, the front end of the first joint is a connecting head, and the rear end of the first joint is threadedly connected to the connecting nut.

[0013] Preferably, a sealing ring is provided in the first joint.

[0014] Compared with the prior art, the present invention realizes the quick connection between the safety filling valve and the connecting pipe by providing a connector with a protrusion on the safety filling valve and then inserting it into a connecting sleeve provided with a slot on the connecting pipe. This connection method is simpler, can effectively save time and improve the filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of the structure in the middle.

[0018] Reference numerals:

[0019] 1. Safety filling valve, 11. Connecting head, 2. Connecting pipe, 3. Connecting sleeve, 31. Protective layer, 311. Stamping groove, 4. Protrusion, 41. Inclined surface, 42. Abutting surface, 43. Transition surface, 5. Connecting nut, 6. First joint, 7. Sealing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.

[0021] See attached Figure 1 and attached Figure 2The present embodiment provides a safe liquid-adding refrigerant pipe connection device, comprising a connector 11 arranged on a safe liquid-adding valve 1 and a connecting sleeve 3 arranged on a connecting pipe 2, a plurality of protrusions 4 are arranged on the outer side of the connector 11, a plurality of slots matching the protrusions 4 are arranged on the inner side of the connecting sleeve 3, a protective layer 31 is fixed on the outer side of the connecting sleeve 3, the protective layer 31 is relatively hard, and can effectively protect the outer surface of the connecting sleeve 3 from deformation when the first joint 6 is inserted into the connecting sleeve 3, ensuring the sealing effect of the protrusion 4 and the slot, the protrusion 4 comprises an inclined surface 41 and an abutting surface 42, the front end of the inclined surface 41 is a lower end, the abutting surface 42 is located at a higher end of the inclined surface 41, the abutting surface 42 is perpendicular to the axis of the connector 11, the inclined surface 41 is used to guide the connector 11 to be inserted into the connecting sleeve 3, and the abutting surface 42 is tightly pressed against the bottom of the slot, so that the connector 11 and the connecting sleeve 3 obtain a better sealing effect. Specifically, the connecting pipe 2 is a three-color pipe. In the utility model, the connector 11 is inserted into the connecting sleeve 3 by buckling and pressing to connect the safety filling valve 1 and the connecting pipe 2. Compared with the threaded connection, this connection method is faster, thereby helping to improve the filling efficiency.

[0022] For details, please refer to the attached Figure 2 The front end of the protective layer 31 wraps around the end of the connecting sleeve 3, and the rear end of the protective layer 31 covers a portion of the connecting pipe 2, so that the connecting sleeve 3 obtains a better protection effect and prevents it from deformation.

[0023] As another implementation of the present utility model: a stamping groove 311 is provided in the middle section of the protective layer 31 , which is conducive to improving the structural strength of the protective layer 31 .

[0024] As another embodiment of the present invention: the bottom of the punching groove 311 is provided with ribs, and this structural design is beneficial to further improve the structural strength of the protective layer 31 .

[0025] Specifically, the protection layer 31 is made of copper.

[0026] As another embodiment of the present invention: a transition surface 43 is provided between the inclined surface 41 and the abutting surface 42 , and the transition surface 43 is parallel to the axis of the connector 11 . This structural design makes the contact between the protrusion 4 and the slot smoother.

[0027] As another implementation of the present utility model: two connecting sleeves 3 are respectively arranged at two ends of the connecting pipe 2 .

[0028] As another implementation mode of the utility model: this embodiment also includes a connecting nut 5 and a first joint 6, the front end of the first joint 6 is a connecting head 11, and the rear end of the first joint 6 is threadedly connected to the connecting nut 5. The connecting nut 5 and the first joint 6 are first assembled together by threaded connection, and then the front end of the first connecting head 11 is inserted into the connecting sleeve 3 to connect the connecting nut 5 to the connecting pipe 2.

[0029] As another implementation of the present utility model: a sealing ring 7 is provided in the first joint 6 .

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A safe liquid-adding refrigerant pipe connection device, characterized in that: It includes a connecting head arranged on a safety filling valve and a connecting sleeve arranged on a connecting pipe, wherein a plurality of protrusions are arranged on the outer side of the connecting head, a plurality of grooves matching with the protrusions are arranged on the inner side of the connecting sleeve, a protective layer is fixed on the outer side of the connecting sleeve, the protrusion includes an inclined surface and an abutting surface, the front end of the inclined surface is a lower end, the abutting surface is located at a higher end of the inclined surface, and the abutting surface is perpendicular to the axis of the connecting head.

2. The safe liquid-adding refrigerant pipe connection device according to claim 1, characterized in that: The front end of the protective layer wraps the end of the connecting sleeve.

3. The safe liquid-adding refrigerant pipe connection device according to claim 2, characterized in that: The rear end of the protective layer covers a portion of the connecting pipe.

4. The safe liquid-adding refrigerant pipe connection device according to claim 3, characterized in that: A punching groove is provided in the middle section of the protective layer.

5. The safe liquid-adding refrigerant pipe connection device according to claim 4, characterized in that: The bottom of the punching groove is provided with ribs.

6. The safe liquid-adding refrigerant pipe connection device according to claim 5, characterized in that: The protective layer is made of copper.

7. The safe liquid-adding refrigerant pipe connection device according to claim 1, characterized in that: A transition surface is provided between the inclined surface and the abutting surface, and the transition surface is parallel to the axis of the connecting head.

8. The safe liquid-adding refrigerant pipe connection device according to claim 6, characterized in that: The two connecting sleeves are respectively arranged at the two ends of the connecting pipe.

9. The safe liquid-adding refrigerant pipe connection device according to claim 8, characterized in that: It also includes a connecting nut and a first joint, the front end of the first joint is a connecting head, and the rear end of the first joint is threadedly connected to the connecting nut.

10. The safe liquid-adding refrigerant pipe connection device according to claim 9, characterized in that: A sealing ring is arranged inside the first joint.

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