Anti-frost-crack connecting nut
By setting a drainage groove and drainage hole in the internal thread of the connecting nut, the problem of nut cracking caused by condensate freezing in the refrigeration system is solved, achieving anti-freezing cracking effect, maintaining connection stability and reducing costs.
Patent Information
- Application Number
- CN202423286986.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing refrigeration and freezing systems, connecting nuts can crack due to condensation freezing into ice, causing connection failures and refrigerant leaks.
A drainage groove and a vertical drainage hole are provided on the internal thread of the connecting nut to drain condensate in a timely manner and prevent ice from expanding.
It effectively prevents ice buildup inside the connecting nut, avoids cracking, maintains connection stability, and is low in cost and simple in structure.
Smart Images
Figure CN223537131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection technology, and in particular to a connection nut that is resistant to freezing and cracking. Background Technology
[0002] In refrigeration systems such as freezing and refrigeration, various valves and pipes are connected together using connecting nuts. In typical existing technology: [Refer to...] Figure 1 This includes valve connectors and pipe connectors, with the connectors and pipes connected by threaded connections.
[0003] In refrigeration and freezing systems, the refrigerant passing through pipes and valves often reaches temperatures as low as -30°C, and sometimes even lower. Therefore, in long-term use of low-temperature systems, atmospheric water vapor gradually condenses on the inner and outer surfaces of the connectors, freezing into ice. Furthermore, since the connectors are threaded fasteners, condensate at the root of the internally threaded nuts often fails to drain properly, freezing into ice. The expanding ice can crack the nut, causing connection failure, refrigerant leakage from the pipes, and ultimately, the refrigeration system losing its cooling capacity. Utility Model Content
[0004] The technical problem to be solved by this utility model is: in order to solve the technical problems in the prior art, this utility model provides a connecting nut with simple structure, low manufacturing cost and anti-freeze crack function.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a connection nut for preventing freezing and cracking, including a housing, a channel provided in the housing, one end of the channel is formed as an internal thread, and the other end is formed as a pipe mounting hole, and the internal thread is provided with at least one drainage groove and a drainage hole perpendicular to the drainage groove.
[0006] This utility model provides a frost-resistant connecting nut. Because the internal thread of the connecting nut is provided with a drainage groove and a drainage hole perpendicular to the drainage groove, when there is condensation inside the connecting nut, it is discharged in time through the drainage groove or drainage hole, so there is no water freezing inside the connecting nut. Therefore, the situation of the nut cracking due to the expansion of ice inside the nut is eliminated. This technical solution has a simple structure, low cost and good effect.
[0007] Furthermore, there are no fewer than three drainage channels, which are spaced apart along the circumferential direction of the internal thread.
[0008] Furthermore, there are at least three drainage holes, which are spaced apart along the circumferential direction of the internal thread.
[0009] Furthermore, the drainage groove has a width of 2mm to 4mm and is machined by milling.
[0010] Furthermore, the drainage hole has a diameter of 1.5mm to 4mm and is formed by drilling.
[0011] Furthermore, the shell is made of copper alloy material through hot forging and then machined.
[0012] Furthermore, the housing is hexagonal.
[0013] Furthermore, the drain hole is provided along the diametrical direction of the internal thread.
[0014] Furthermore, the drainage groove is arranged along the axial direction of the internal thread.
[0015] Furthermore, the bottom of the internal thread is provided with a tapered hole at the connection between it and the pipe mounting hole.
[0016] The beneficial effects of this utility model are that, since a drainage groove and a drainage hole perpendicular to the drainage groove are provided in the internal thread of the connecting nut, when there is condensation inside the connecting nut, it will be discharged in time through the drainage groove or drainage hole, so there is no water freezing inside the connecting nut. Therefore, the situation of the nut cracking due to ice expansion inside the nut is eliminated. This technical solution has a simple structure, low cost and good effect. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram illustrating the connection of joints and pipe ends in existing technology.
[0019] Figure 2 This is a three-dimensional structural diagram illustrating an anti-freeze crack connecting nut in this utility model.
[0020] Figure 3 This is a cross-sectional schematic diagram showing the internal structure of the shell in this utility model.
[0021] Figure 4 This is a schematic diagram of the end face of the drainage channel in this utility model.
[0022] Figure 5 This is a side view showing the drainage hole in this utility model.
[0023] In the diagram: 1. Shell; 11. Channel; 111. Internal thread; 112. Pipe mounting hole; 113. Tapered hole; 15. Drainage groove; 16. Drainage hole; 2. Connecting joint; 3. Pipe connecting pipe end. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] This utility model discloses a connection nut that is resistant to freezing and cracking.
[0027] Reference Figures 2 to 5 A frost-resistant connecting nut includes a hexagonal housing 1 with a channel 11 inside. One end of the channel 11 is formed with an internal thread 111, and the other end is formed with a pipe mounting hole 112. The bottom of the internal thread 111, where it connects with the pipe mounting hole 112, has a tapered hole 113. The internal thread 111 has at least one drainage groove 15 and a drainage hole 16 perpendicular to the drainage groove 15. The drainage hole 16 is arranged along the diameter direction of the internal thread 111 to allow water inside the connecting nut to drain along the diameter direction of the internal thread 111; the drainage groove 15 is arranged along the axial direction of the internal thread 111 to allow water inside the connecting nut to drain along the axial direction of the internal thread 111.
[0028] Because a drainage groove 15 and a drainage hole 16 perpendicular to the drainage groove 15 are provided in the internal thread 111 of the connecting nut, when there is condensation inside the connecting nut, it will be discharged in time through the drainage groove 15 or the drainage hole 16, so there is no water freezing inside the connecting nut. Therefore, the situation of the nut cracking due to ice expansion inside the nut is eliminated. This technical solution has a simple structure, low cost and good effect.
[0029] Specifically, there are at least three drainage grooves 15, which are spaced apart along the circumferential direction of the internal thread 111; there are at least three drainage holes 16, which are spaced apart along the circumferential direction of the internal thread 111. In this embodiment, both drainage grooves 15 and drainage holes 16 are provided in threes.
[0030] Furthermore, the drainage groove 15 has a width of 2mm to 4mm, preferably 2mm, and is machined by milling. The drainage hole 16 has a diameter of 1.5mm to 4mm, preferably 1.5mm, and is machined by drilling. The shell 1 is made of copper alloy material, hot forged and then machined.
[0031] Working principle: A drainage groove 15 and a drainage hole 16 perpendicular to the drainage groove 15 are provided in the internal thread 111 of the connecting nut. When there is condensation inside the connecting nut, it is discharged in time through the drainage groove 15 or the drainage hole 16, so there is no water freezing inside the connecting nut. Therefore, the situation of the connecting nut cracking due to the expansion of ice inside the connecting nut is eliminated. This technical solution has a simple structure, low cost and good effect.
[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A frost-resistant connecting nut, comprising a housing (1), wherein the housing (1) has a channel (11), one end of the channel (11) is formed with an internal thread (111), and the other end is formed with a pipe mounting hole (112), characterized in that, The internal thread (111) has at least one drainage groove (15) and a drainage hole (16) perpendicular to the drainage groove (15).
2. The anti-freeze crack connecting nut according to claim 1, characterized in that, There are at least three drainage channels (15), which are spaced apart along the circumferential direction of the internal thread (111).
3. The anti-freeze crack connecting nut according to claim 1, characterized in that, There are at least three drainage holes (16), which are spaced apart along the circumferential direction of the internal thread (111).
4. The anti-freeze crack connecting nut according to claim 1, characterized in that, The drainage trough (15) is 2mm to 4mm wide and is machined by milling.
5. The anti-freeze crack connecting nut as described in claim 1, characterized in that, The drainage hole (16) has a diameter of 1.5mm to 4mm and is machined by drilling.
6. The anti-freeze crack connecting nut as described in claim 1, characterized in that, The shell (1) is made of copper alloy material by hot forging and then machining.
7. The anti-freeze crack connecting nut as described in claim 1, characterized in that, The shell (1) is hexagonal.
8. A frost-resistant connecting nut as described in claim 1, characterized in that, The drain hole (16) is provided along the diameter direction of the internal thread (111).
9. A frost-resistant connecting nut as described in claim 1, characterized in that, The drainage groove (15) is arranged along the axial direction of the internal thread (111).
10. A frost-resistant connecting nut as described in claim 1, characterized in that, The bottom of the internal thread (111) is connected to the pipe mounting hole (112) with a tapered hole (113).