A fluid connector and its fitting

Abstract

This utility model discloses a fluid connector and its fitting, relating to the field of connector technology. The fitting includes a valve cover with several sets of insertion structures. Each set of insertion structures includes a connecting pin and a connecting groove for axial insertion into the valve cover. When two valve covers are rotated relative to each other circumferentially, the limiting flange of the connecting pin abuts against the groove edge of the corresponding connecting groove. A fixing stud is provided at the end of the connecting pin away from the limiting flange, and a fixing groove is provided on the end face of the valve cover. The fixing stud and the fixing groove are detachably connected. The fluid connector and its fitting provided by this utility model allow for replacement of only the connecting pin if it is damaged, eliminating the need to replace the entire valve cover. This reduces the number of parts that need to be replaced and makes replacement more convenient, thus reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a fluid connector and its joint. Background Technology

[0002] Fluid connectors mainly consist of male and female connectors. When the two connectors are mated, a sealed connection is formed between the two pipes, enabling efficient fluid transmission. When the two connectors are separated, the valves inside each connector automatically close to prevent fluid leakage. Due to their convenience and reliability, fluid connectors are widely used in fields with extremely high sealing requirements, such as liquid cooling systems in data centers, hydraulic systems in engineering machinery, energy transmission in petrochemicals, high-pressure pipelines in aerospace, and sterile fluid transmission in medical equipment.

[0003] Existing fluid connectors have a connecting protrusion and a connecting groove between the valve covers of the male and female connectors. When the male and female connectors are mated, the flange of the connecting protrusion enters the connecting groove. Then, by rotating the two connectors relative to each other, the connecting protrusion rotates circumferentially relative to the connecting groove, and the flange of the connecting protrusion abuts against the edge of the groove, preventing the male connector from disengaging from the female connector. In developing this invention, the inventors discovered at least the following problems with the existing technology: Existing connecting protrusions are generally integrally formed onto the valve cover using CNC machining. Once the connecting protrusion becomes severely worn due to frequent disassembly and assembly, the entire valve cover needs to be replaced, resulting in high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a fluid connector and its fitting, which improves the technical problem of excessively high maintenance costs caused by the need to replace the entire valve cover for maintenance of existing fluid connectors.

[0005] To achieve the above objectives, this utility model provides a fluid connector joint, including a valve cover. The valve cover has several sets of plug-in structures, each set of plug-in structures including a connecting pin and a connecting groove for axial insertion and engagement of the valve cover. When two valve covers arranged opposite to each other rotate relative to each other in the circumferential direction, the limiting flange of the connecting pin abuts against the groove edge of the corresponding connecting groove. The end of the connecting pin away from the limiting flange is provided with a fixing stud, and the end face of the valve cover is provided with a fixing groove. The fixing stud and the fixing groove are detachably connected.

[0006] In some embodiments, the connecting pin includes a pin body passing through the connecting groove and a positioning flange coaxially connected between the pin body and the fixing stud; the fixing groove includes a threaded groove and a positioning groove coaxially communicating with the threaded groove; when the threaded groove is threadedly engaged with the fixing stud, the positioning flange and the positioning groove abut against each other axially.

[0007] In some embodiments, the connecting groove includes a through groove and a guide groove that are circumferentially connected;

[0008] When the limiting flange enters the groove axially, the pin body rotates circumferentially along the guide groove with the connecting pin, and the positioning flange and the limiting flange respectively abut against the two opposite groove edges of the connecting groove.

[0009] In some embodiments, the diameter of the positioning flange is larger than the diameter of the pin body, and the diameter of the positioning flange is larger than the diameter of the fixing stud.

[0010] In some embodiments, the groove edge of the fixing groove is provided with an annular boss, which is used to enhance the groove edge strength of the fixing groove; along the axial direction of the fixing groove, the diameter of the annular boss gradually increases in the direction toward the fixing groove.

[0011] In some embodiments, one end of the limiting flange is provided with a fastening groove, which is used to engage with a rotary wrench.

[0012] In some embodiments, the end face of the valve cover is provided with at least two connecting pins and at least two connecting grooves, and all connecting pins and all connecting grooves are alternately arranged along the annular structure.

[0013] In some embodiments, the valve port of the valve cover is provided with a sealing ring; the sealing rings of two valve covers disposed opposite each other abut against each other along the axial direction.

[0014] In some embodiments, the end face is provided with an outer boss, and the outer boss, the annular structure and the sealing ring are distributed in concentric circles from the outside to the inside; the outer bosses of the two valve covers arranged opposite each other abut against each other along the axial direction.

[0015] This utility model also provides a fluid connector, including two of the above-mentioned connectors, the connectors including a first connector and a second connector, the first connector including a first valve cover, the second connector including a second valve cover, and the first valve cover and the second valve cover being coaxially opposite each other.

[0016] Compared with the prior art, the technical solution provided by this utility model has at least the following beneficial effects:

[0017] This invention optimizes the structure of the connecting pin on the valve cover. The optimized connecting pin has a fixing stud at one end, and the valve cover has a fixing groove. The fixing stud and the fixing groove are detachably connected. If the connecting pin is damaged, only the connecting pin needs to be replaced, eliminating the need to replace the entire valve cover. This reduces the number of parts that need to be replaced and makes replacement more convenient, thus reducing maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the valve cover provided in an embodiment of this utility model;

[0020] Figure 2 for Figure 1 Another schematic diagram;

[0021] Figure 3 for Figure 1 A sectional view;

[0022] Figure 4 for Figure 1 A schematic diagram of the connecting pins in the diagram;

[0023] Figure 5 for Figure 1 A diagram showing the state of the connecting pin when it is inserted into the connecting groove along the axial direction.

[0024] Figure 6 for Figure 5 The main view;

[0025] Figure 7 for Figure 1 A diagram showing the state of the connecting pin relative to the connecting groove along the circumferential direction.

[0026] Figure 8 for Figure 7 The main view;

[0027] Figure 9 for Figure 1 A schematic diagram showing the valve cover installed on the valve body.

[0028] Figure 10 for Figure 9 A sectional view;

[0029] Figure 11 for Figure 9 Exploded view;

[0030] Figure 12 A schematic diagram of a fluid connector provided in an embodiment of this utility model;

[0031] Figure 13 for Figure 12 Another schematic diagram.

[0032] The attached figures are labeled as follows:

[0033] Valve cover 1, connecting pin 2, connecting groove 3 and fixing groove 4;

[0034] First connector 101 and second connector 102;

[0035] First valve cover 1011;

[0036] Second valve cover 1021;

[0037] Valve port 11, sealing ring 12, and outer boss 13;

[0038] Limiting flange 21, fixing stud 22, pin body 23, positioning flange 24, and fastening slot 25;

[0039] Through groove 31 and guide groove 32;

[0040] Threaded groove 41, positioning groove 32 and annular boss 43. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] First, it should be noted that the axial direction in this article refers to the direction of the central axis of the fluid connector, while the circumferential direction refers to the direction tangent to the radial direction of the fluid connector.

[0044] This utility model discloses a fluid connector connector, as shown in the attached figure. Figures 1 to 3 As shown, the device includes a valve cover 1, which has several sets of insertion structures. Each set of insertion structures includes a connecting pin 2 and a connecting groove 3 for axial insertion into the valve cover 1. The connecting pin 2 extends beyond the end face of the valve cover 1, and the connecting groove 3 can be an arc groove. When the two valve covers 1 are circumferentially rotated relative to each other, the limiting flange 21 of the connecting pin 2 abuts against the groove edge of the corresponding connecting groove 3. That is, when the two valve covers 1 are mated and rotate relative to each other circumferentially, the limiting flange 21 of the connecting pin 2 of the two valve covers 1 abuts against the groove edge of the corresponding connecting groove 3 on the valve cover 1.

[0045] This invention optimizes the structure of the connecting pin 2 of the valve cover 1. One end of the optimized connecting pin 2 is provided with a fixing stud 22, and the end face of the valve cover 1 is provided with a fixing groove 4. The fixing stud 22 and the fixing groove 4 are threaded together to form a detachable connection. If the connecting pin 2 is damaged, only the connecting pin 2 needs to be replaced, without replacing the entire valve cover. This reduces the number of parts that need to be replaced and makes replacement more convenient, thus reducing maintenance costs.

[0046] As a preferred embodiment, as shown in the appendix Figure 4 As shown, the connecting pin 2 includes a pin body 23 and a positioning flange 24. The pin body 23 is circumferential and passes through the connecting groove 3. That is, when the connecting pin 2 is inserted into the connecting groove 3 axially, the pin body 23 and the connecting groove 3 are slidably engaged in the circumferential direction, so that the pin body 23 guides the connecting pin 2 to slide circumferentially along the connecting groove 3.

[0047] As attached Figure 2 and 9 As shown, the fixing groove 4 is a stepped groove, including a threaded groove 41 and a positioning groove 32 coaxially connected to the threaded groove 41. The positioning groove 32 is located at the opening of the threaded groove 41, and the diameter of the positioning groove 32 is larger than the diameter of the threaded groove 41, while the axial depth of the positioning groove 32 is smaller than the axial depth of the threaded groove 41. The threaded groove 41 is threadedly engaged with the fixing stud 22 to achieve a detachable and fixed connection of the pin 2. The positioning flange 24 is coaxially connected between the pin body 23 and the fixing stud 22. When the threaded groove 41 is threadedly engaged with the fixing stud 22, the positioning flange 24 and the positioning groove 32 abut against each other axially, thereby limiting the axial insertion depth of the connecting pin 2 in the fixing groove 4. This effectively ensures that all connecting pins 2 have the same axial extension length, eliminating the problem of jamming or loose connection caused by inconsistent axial lengths of the connecting pins 2, and improving the connection reliability of the fluid connector.

[0048] As a preferred embodiment, as shown in the appendix Figure 9 As shown, the connecting groove 3 includes a through groove 31 and a guide groove 32 that are circumferentially connected. Specifically, the through groove 31 is a cylindrical groove, and its diameter is greater than or equal to the diameter of the limiting flange 21 of the connecting pin 2, effectively ensuring that the limiting flange 21 can pass through the through groove 31 axially. The guide groove 32 is an arcuate groove extending circumferentially along the valve cover 1. The guide groove 32 is slidably fitted with the pin body 23 circumferentially. The width of the guide groove is equal to the diameter of the pin body 23, and the width of the guide groove 32 is less than the diameter of the through groove 31. The axial length of the pin body 23 is consistent with the axial depth of the guide groove.

[0049] When the limiting flange 21 enters the groove 31 axially, the pin body 23 rotates circumferentially along the guide groove with the connecting pin 2. The positioning flange 24 and the limiting flange 21 abut against the two opposite groove edges of the connecting groove 3, so that the positioning flange 24 and the limiting flange 21 together limit the connecting pin 2 axially, further ensuring that the axial extension length of the connecting pin 2 is equal.

[0050] As a preferred embodiment, as shown in the appendix Figure 4 As shown, the diameter of the positioning flange 24 is larger than the diameter of the pin body 23. By increasing the diameter of the positioning flange 24, the torsional strength of the connecting pin 2 is improved, preventing the connecting pin 2 from breaking or deforming. The diameter of the positioning flange 24 is larger than the diameter of the fixing stud 22, which can both axially limit the insertion depth of the connecting pin 2 in the fixing groove 4 and increase the fastening force between the connecting pin 2 and the fixing groove 4 by increasing the contact area between the connecting pin 2 and the fixing groove 4, thus achieving the purpose of preventing loosening.

[0051] As a preferred embodiment, as shown in the appendix Figure 2 As shown, the groove edge of the fixing groove 4 is provided with an annular boss 43. The annular boss 43 is used to enhance the strength of the groove edge of the fixing groove 4, prevent the groove edge of the fixing groove 4 from deforming due to the impact of the positioning flange 24, avoid the connecting pin 2 from being loose due to the deformation of the fixing groove 4, and improve the connection strength between the connecting pin 2 and the fixing groove 4. Specifically, along the axial direction of the fixing groove 4, the diameter of the annular boss 43 gradually increases in the direction towards the fixing groove 4, that is, the outer surface of the annular boss 43 has a gradually expanding structure, which reduces local stress concentration and further improves the connection strength between the connecting pin 2 and the fixing groove 4.

[0052] As a preferred embodiment, as shown in the appendix Figure 4 As shown, one end of the limiting flange 21 is provided with a fastening groove 25, which is used to engage with the rotary wrench to facilitate tightening or loosening of the connecting pin 2. Specifically, the fastening groove 25 is a regular hexagonal groove to prevent circumferential relative rotation between the fastening groove 25 and the rotary wrench, ensuring that the connecting pin 2 rotates synchronously with the rotary wrench.

[0053] As a preferred embodiment, as shown in the appendix Figure 1 and 2 As shown, the end face of the valve cover 1 is provided with at least two connecting pins 2 and at least two connecting grooves 3. All connecting pins 2 and all connecting grooves 3 are alternately arranged along the annular structure. When the two valve covers 1 are opposite each other, all connecting pins 2 and all connecting grooves 3 are matched one-to-one along the axial direction.

[0054] As a preferred embodiment, as shown in the appendix Figure 1As shown, the valve port 11 of the valve cover 1 is provided with a sealing ring 12. The sealing rings 12 of the two valve covers arranged opposite each other abut against each other along the axial direction, which improves the sealing performance between the first valve port 11 and the second valve port 211 and prevents leakage between the first valve port 11 and the second valve port 211.

[0055] Each valve port end face is provided with an annular groove, which is stepped. Correspondingly, the sealing ring is stepped and mates with the annular groove. The stepped structure of the groove prevents the two sealing rings from moving axially, effectively avoiding the two sealing rings being squeezed out or shifted due to fluid pressure fluctuations or vibrations. Moreover, the stepped sidewalls of the groove provide radial constraint on the two sealing rings, preventing circumferential rolling or twisting during assembly or operation, ensuring that the sealing surface is always in close contact with the valve port end face. In this way, the sealing performance between the two joints is significantly improved through bidirectional axial and radial limiting. In addition, multiple sealing lines are formed between the stepped groove and the two sealing rings. Even if a single sealing line fails due to wear or deformation, basic sealing performance can still be maintained, improving the fault tolerance rate.

[0056] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the end face is provided with an outer boss 13. The outer boss 13, the annular structure and the sealing ring 12 are distributed in concentric circles from the outside to the inside. The outer bosses 13 of the two valve covers are axially abutted together to eliminate the axial assembly gap between the two valve covers. Through metal-metal contact sealing, the fluid penetration path along the axial gap is directly blocked, avoiding leakage caused by the gap between the two valve covers and improving the sealing performance of the fluid connector.

[0057] This utility model also provides a fluid connector, including two of the aforementioned connectors. Each connector includes a first connector 101 and a second connector 102. The first connector 101 includes a first valve cover 1011, and the second connector 102 includes a second valve cover 1021. When the first connector 101 and the second connector 102 are aligned, the first valve cover 1011 and the second valve cover 1021 are coaxially aligned. Several sets of insertion structures are provided between the first valve cover 1011 and the second valve cover 1021. Specifically, four sets of insertion structures are provided between the first valve cover 1011 and the second valve cover 1021. Each of the first valve cover 1011 and the second valve cover 1021 has four connecting pins 2 and four connecting grooves 3. The four connecting pins 2 are evenly spaced circumferentially, and the four connecting grooves 3 are equally spaced circumferentially. A connecting groove 3 is provided between two adjacent connecting pins 2. Of course, the number of connecting pins 2 and connecting grooves 3 is not limited to this.

[0058] When the first valve cover 1011 and the second valve cover 1021 are coaxially aligned, all the connecting pins 2 are inserted one-to-one into all the connecting grooves 3 along the axial direction, as shown in the attached figure. Figure 11 and 12As shown; next, the first connector 101 rotates circumferentially relative to the second connector 102, and the first valve cover 1011 rotates synchronously with the first connector 101 relative to the second valve cover 1021. The connecting pin 2 rotates circumferentially along the connecting groove 3, and the limiting flange 21 of the connecting pin 2 abuts against the groove edge of the connecting groove 3, preventing the first connector 101 from disengaging from the second connector 102, as shown in the attached figure. Figure 12 and 13 As shown, the first connector 101 and the second connector 102 are connected. Conversely, the first connector 101 is first reversed circumferentially relative to the second connector 102, the connecting pin 2 rotates in the opposite direction along the connecting groove 3, and then the connecting pin 2 is pulled out axially, separating the connecting pin 2 from the connecting groove 3, thus separating the first connector 101 and the second connector 102. The overall disassembly and assembly process is relatively simple and convenient to operate.

[0059] Specifically, this invention optimizes the structure of the connecting pin 2 provided on the first valve cover 1011 and the second valve cover 1021. One end of the optimized connecting pin 2 is provided with a fixing stud 22, and both the first valve cover and the second valve cover 1021 are provided with fixing grooves 4. The fixing stud 22 and the fixing grooves 4 are threaded together to form a detachable connection. If the connecting pin 2 is damaged, only the connecting pin 2 needs to be replaced; there is no need to replace the first valve cover 1011 and the second valve cover 1021, resulting in lower maintenance costs.

[0060] Specifically, the first valve port of the first valve cover 1011 is provided with a first sealing ring, and the second valve port of the second valve cover is provided with a second sealing ring; when the first connector 101 and the second connector 102 are connected, the first sealing ring and the second sealing ring abut against each other along the axial direction, thereby improving the sealing performance between the first valve port and the second valve port and preventing leakage between the first valve port and the second valve port.

[0061] The end face of the first valve cover 1011 is provided with a first outer boss, and the first outer boss, the annular structure and the first sealing ring are distributed in concentric circles from the outside to the inside; the end face of the second valve cover 1021 is provided with a second outer boss, and the second outer boss, the annular structure and the second sealing ring are distributed in concentric circles from the outside to the inside; when the first connector 101 and the second connector 102 are connected, the first outer boss and the second outer boss abut against each other along the axial direction, thereby preventing leakage between the first valve cover 1011 and the second valve cover 1021.

[0062] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0063] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A connector for a fluid connector, characterized in that, The valve cover (1) is provided with several sets of plug-in structures. Each set of plug-in structures includes a connecting pin (2) and a connecting groove (3) for axial insertion of the valve cover (1). When the two valve covers (1) are arranged opposite to each other and rotate relative to each other in the circumferential direction, the limiting flange (21) of the connecting pin (2) abuts against the groove edge of the corresponding connecting groove (3). The connecting pin (2) is provided with a fixing stud (22) at one end away from the limiting flange (21), and the end face of the valve cover (1) is provided with a fixing groove (4). The fixing stud (22) and the fixing groove (4) are detachably connected.

2. The fluid connector fitting of claim 1, wherein, The connecting pin (2) includes a pin body (23) passing through the connecting groove (3) and a positioning flange (24) coaxially connected between the pin body (23) and the fixing stud (22); the fixing groove (4) includes a threaded groove (41) and a positioning groove (32) coaxially connected to the threaded groove (41); when the threaded groove (41) is threadedly engaged with the fixing stud (22), the positioning flange (24) and the positioning groove (32) abut against each other axially.

3. The fluid connector fitting of claim 2, wherein, The connecting groove (3) includes a through groove (31) and a guide groove (32) that are connected in a circumferential direction. When the limiting flange (21) enters the through groove (31) axially, the pin body (23) rotates circumferentially along the guide groove (32) with the connecting pin (2), and the positioning flange (24) and the limiting flange (21) respectively abut against the two opposite groove edges of the connecting groove (3).

4. The fluid connector fitting of claim 2, wherein, The diameter of the positioning flange (24) is greater than the diameter of the pin body (23), and the diameter of the positioning flange (24) is greater than the diameter of the fixing stud (22).

5. The connector of the fluid connector according to any one of claims 1 to 4, characterized in that, The groove edge of the fixing groove (4) is provided with an annular boss (43), which is used to enhance the groove edge strength of the fixing groove (4); along the axial direction of the fixing groove (4), the diameter of the annular boss (43) gradually increases in the direction toward the fixing groove (4).

6. A fluid connector fitting according to any one of claims 1 to 4, wherein, One end of the limiting flange (21) is provided with a fastening groove (25), which is used to engage with a rotary wrench.

7. A fluid connector fitting according to any one of claims 1 to 4, wherein, The end face of the valve cover (1) is provided with at least two connecting pins (2) and at least two connecting grooves (3), and all the connecting pins (2) and all the connecting grooves (3) are alternately arranged along the annular structure.

8. The fluid connector fitting of claim 7, wherein, The valve port (11) of the valve cover (1) is provided with a sealing ring (12); the sealing rings (12) of the two valve covers (1) arranged opposite to each other abut against each other along the axial direction.

9. The fluid connector fitting of claim 8, wherein, The end face is provided with an outer boss (13), and the outer boss (13), the annular structure and the sealing ring (12) are distributed in concentric circles from the outside to the inside; the outer bosses (13) of the two valve covers (1) arranged opposite to each other abut against each other along the axial direction.

10. A fluid connector, characterized in that, The device includes two connectors as described in any one of claims 1 to 9, the connectors comprising a first connector (101) and a second connector (102), the first connector (101) comprising a first valve cover (1011), the second connector (102) comprising a second valve cover (1021), the first valve cover (1011) and the second valve cover (1021) being coaxially opposite each other.

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