High-sealing fit hydraulic pipe joint

Abstract

The utility model provides a hydraulic pipe joint with high sealing fit, which comprises a joint body, two ends of the joint body are respectively a liquid inlet end and a liquid outlet end, the outer wall of the liquid inlet end is provided with a plurality of limiting ring grooves, the longitudinal section of each limiting ring groove is arc-shaped, and two sides of a notch of each limiting ring groove are provided with first guide fillets. The outer side of the liquid inlet end is sleeved with an auxiliary sleeve, a limiting protruding ring is arranged at the position, opposite to the limiting ring groove, of the inner wall of the auxiliary sleeve, the longitudinal section of the limiting protruding ring is in a circular arc shape, and a second guiding round corner is arranged at the joint of the limiting protruding ring and the auxiliary sleeve. The hydraulic pipe is pressed into the limiting ring groove through the limiting convex ring, so that the hydraulic pipe is tightly attached to the inner wall of the limiting ring groove. And moreover, first guide fillets are arranged on the two sides of the notch of the limiting ring groove, and second guide fillets are arranged at the joint of the limiting convex ring and the auxiliary sleeve, so that the hydraulic pipe can be effectively attached to the liquid inlet end, and the hydraulic pipe joint has the advantages that the sealing performance is high, and the sealing performance is not prone to being affected.

Description

Technical Field

[0001] The utility model relates to a hydraulic pipe joint, in particular to a hydraulic pipe joint with high sealing fit. Background Art

[0002] At present, a Chinese patent with the announcement number CN211925097U discloses a hydraulic pipe joint, including a tubular body, the two ends of which are respectively a liquid inlet end and a liquid outlet end. The outer wall of the liquid inlet end is provided with a conical surface section, a plurality of annular grooves, and a radially outwardly protruding shoulder in sequence from the port inward. The middle part of the shoulder has a circle of annular grooves, and a retaining spring with a notch is embedded at the intersection of the liquid inlet end and the shoulder. A rubber ring is provided between the retaining spring and the shoulder, and the rubber ring is sleeved on the outer side of the liquid inlet end.

[0003] The conical surface section plays a guiding role, making it easier for the inlet end to be inserted into the hydraulic pipe. When the end of the hydraulic pipe reaches the circlip, the circlip with a notch is compressed so that the hydraulic pipe inserts the circlip until the shoulder contacts the end of the hydraulic pipe. At this time, the rubber ring is sealed to the inner wall of the end of the hydraulic pipe, and the circlip expands outward under the action of its own elasticity to clamp the hydraulic pipe.

[0004] However, when the hydraulic pipe sleeve is arranged outside the liquid inlet end, the inner wall of the hydraulic pipe cannot fit with the inner wall of the annular groove 1, which will affect the sealing performance of the hydraulic pipe joint. Summary of the invention

[0005] In view of this, the utility model aims to provide a high-sealing hydraulic pipe joint, which has the advantages of high sealing performance and is not easily affected.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a high-sealing hydraulic pipe joint, comprising a joint body, the two ends of the joint body are respectively a liquid inlet end and a liquid outlet end, a plurality of limiting ring grooves are provided on the outer wall of the liquid inlet end, and the plurality of limiting ring grooves are evenly distributed along the axial direction of the liquid inlet end, the longitudinal cross-section of the limiting ring groove is in the shape of an arc, both sides of the groove of the limiting ring groove are provided with a guide fillet 1, and the center of the guide fillet 1 falls in the liquid inlet end, an auxiliary sleeve is provided on the outer side of the liquid inlet end, the auxiliary sleeve is used to press the hydraulic pipe to the outer side of the liquid inlet end, a limiting convex ring is provided at the inner wall of the auxiliary sleeve opposite to the limiting ring groove, the longitudinal cross-section of the limiting convex ring is in the shape of an arc, and a guide fillet 2 is provided at the connection between the limiting convex ring and the auxiliary sleeve, the center of the guide fillet 2 falls on one side of the inner hole of the auxiliary sleeve, and the limiting convex ring is used to press the hydraulic pipe into the limiting ring groove.

[0007] Through the above technical solution, when in use, the hydraulic pipe is put on the outside of the liquid inlet end, so that the inner wall of the hydraulic pipe is tightly against the outer wall of the liquid inlet end. Then the auxiliary sleeve is put on the outside of the hydraulic pipe, so that the inner wall of the auxiliary sleeve is tightly against the outer wall of the hydraulic pipe. At the same time, the limiting convex ring arranged on the inner side of the auxiliary sleeve presses the hydraulic pipe into the limiting ring groove, so that the hydraulic pipe is tightly against the inner wall of the limiting ring groove. Furthermore, both sides of the notch of the limiting ring groove are provided with a guide fillet 1, and the connection between the limiting convex ring and the auxiliary sleeve is provided with a guide fillet 2, so that the hydraulic pipe can be effectively fitted with the liquid inlet end, so that the above hydraulic pipe joint has the advantages of high sealing and the sealing is not easily affected.

[0008] Preferably, the auxiliary sleeve comprises a left connecting flap and a right connecting flap which are detachably connected.

[0009] Through the above technical solution, the auxiliary sleeve is composed of a detachably connected left connecting petal and a right connecting petal, so that the auxiliary sleeve has the advantage of being more convenient to disassemble and assemble.

[0010] Preferably, the upper end of the left connecting flap is hingedly connected to the upper end of the right connecting flap, and the auxiliary sleeve also includes a threaded member, which presses and fixes the lower end of the left connecting flap to the lower end of the right connecting flap.

[0011] Through the above technical solution, the upper end of the left connecting flap is hingedly connected to the upper end of the right connecting flap, so when the auxiliary sleeve is sleeved onto the outside of the hydraulic pipe, the left connecting flap and the right connecting flap can be hung on the top of the hydraulic pipe, making the installation process of the auxiliary sleeve more convenient and quick. The lower end of the left connecting flap is pressed and fixed to the lower end of the right connecting flap by a screw member, which has the advantages of high connection stability and convenient disassembly and assembly.

[0012] Preferably, the threaded member includes a connecting bolt and a connecting nut, the connecting bolt is rotatably connected to the lower end of the left connecting petal, the threaded section of the connecting bolt passes through the right connecting petal, and the connecting nut is threadedly connected to the threaded section of the connecting bolt.

[0013] Through the above technical solution, when the auxiliary sleeve needs to be removed, firstly, the connection nut is rotated to separate the connection nut from the threaded section of the connection bolt, and then the connection bolt is pulled to separate the connection bolt from the left connection petal and the right connection petal. When the auxiliary sleeve needs to be installed outside the hydraulic pipe, the operation only needs to be reversed.

[0014] Preferably, the inner walls of the left connecting flap and the right connecting flap are both provided with T-shaped mounting grooves along the circumferential direction, and the outer ring of the limiting convex ring is provided with a T-shaped mounting block, and the T-shaped mounting block is clamped in the T-shaped mounting groove.

[0015] Through the above technical solution, the T-shaped mounting block is clamped in the T-shaped mounting groove to connect the limiting convex ring with the left connecting petal and the right connecting petal, making the disassembly and assembly process of the limiting convex ring more convenient and quick.

[0016] Preferably, a positioning ring groove is provided on the outer wall of the liquid inlet end, and a positioning protrusion is provided on the inner wall of the auxiliary sleeve, and the positioning protrusion is clamped in the positioning ring groove.

[0017] Through the above technical solution, the cooperation between the positioning ring groove and the positioning protrusion can not only be used to limit the axial relative movement between the auxiliary sleeve and the liquid inlet end, but also can be used to locate the installation position of the auxiliary sleeve to ensure that the limiting protrusion can be directly opposite to the limiting ring groove.

[0018] Preferably, the end of the positioning protrusion is reduced in diameter to form a guide end, and the guide end is used to guide the positioning protrusion to penetrate into the positioning ring groove.

[0019] Through the above technical solution, the width of the guide end is small, and the positioning protrusion can be guided to extend into the positioning ring groove, making the installation of the auxiliary sleeve more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 for Figure 1 A magnified view of part A;

[0022] Figure 3 Schematic diagram of the auxiliary casing structure

[0023] Figure numerals: 1. Connector body; 2. Liquid inlet end; 3. Liquid outlet end; 4. Limiting ring groove; 5. Guide fillet 1; 6. Auxiliary sleeve; 61. Left connecting flap; 62. Right connecting flap; 63. Threaded part; 631. Connecting bolt; 632. Connecting nut; 7. Limiting convex ring; 8. Guide fillet 2; 9. T-type mounting groove; 10. T-type mounting block; 11. Positioning ring groove; 12. Positioning protrusion; 121. Guide end. Implementation

[0024] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0025] A high-sealing hydraulic pipe joint, such as Figures 1 to 3 As shown, it comprises a tubular joint body 1, and the two ends of the joint body 1 are respectively a liquid inlet end 2 and a liquid outlet end 3.

[0026] A plurality of limiting ring grooves 4 are provided on the outer wall of the liquid inlet end 2, and the limiting ring grooves 4 are evenly distributed along the axial direction of the liquid inlet end 2. The longitudinal cross section of the limiting ring groove 4 is in an arc shape, and guide fillets 5 are provided on both sides of the groove of the limiting ring groove 4, and the center of the guide fillet 5 falls in the liquid inlet end 2.

[0027] An auxiliary sleeve 6 is sleeved on the outside of the liquid inlet end 2, and the auxiliary sleeve 6 is used to press the hydraulic pipe against the outside of the liquid inlet end 2. A limiting convex ring 7 is provided at the inner wall of the auxiliary sleeve 6 opposite to the limiting ring groove 4, and the longitudinal section of the limiting convex ring 7 is in an arc shape. A guide fillet 2 8 is provided at the connection between the limiting convex ring 7 and the auxiliary sleeve 6, and the center of the guide fillet 2 8 falls on one side of the inner hole of the auxiliary sleeve 6. The limiting convex ring 7 is used to press the hydraulic pipe into the limiting ring groove 4.

[0028] The auxiliary sleeve 6 includes a detachably connected left connecting flap 61 and a right connecting flap 62. The upper end of the left connecting flap 61 is hingedly connected to the upper end of the right connecting flap 62. The auxiliary sleeve 6 also includes a threaded member 63, which presses and fixes the lower end of the left connecting flap 61 and the lower end of the right connecting flap 62. The threaded member 63 includes a connecting bolt 631 and a connecting nut 632. The connecting bolt 631 is rotatably connected to the lower end of the left connecting flap 61, the threaded section of the connecting bolt 631 passes through the right connecting flap 62, and the connecting nut 632 is threadedly connected to the threaded section of the connecting bolt 631.

[0029] The inner walls of the left connecting petal 61 and the right connecting petal 62 are both provided with T-shaped mounting grooves 9 along the circumferential direction, and the outer ring of the limiting convex ring 7 is provided with T-shaped mounting blocks 10 , which are clamped in the T-shaped mounting grooves 9 .

[0030] A positioning annular groove 11 is provided on the outer wall of the liquid inlet end 2, and a positioning protrusion 12 is provided on the inner wall of the auxiliary sleeve 6. The positioning protrusion 12 is locked in the positioning annular groove 11. The end of the positioning protrusion 12 is reduced in diameter to form a guide end 121, which is used to guide the positioning protrusion 12 to penetrate into the positioning annular groove 11.

[0031] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A highly sealed hydraulic pipe joint, comprising a joint body (1), wherein the two ends of the joint body (1) are respectively a liquid inlet end (2) and a liquid outlet end (3), a plurality of limiting ring grooves (4) are provided on the outer wall of the liquid inlet end (2), and the plurality of limiting ring grooves (4) are evenly distributed along the axial direction of the liquid inlet end (2), Its characteristics are: The longitudinal cross section of the limiting ring groove (4) is in the shape of an arc. Both sides of the groove of the limiting ring groove (4) are provided with guide fillets 1 (5), and the center of the guide fillet 1 (5) falls on the liquid inlet end (2). The outer side of the liquid inlet end (2) is provided with an auxiliary sleeve (6), and the auxiliary sleeve (6) is used to press the hydraulic pipe against the outer side of the liquid inlet end (2). A limiting convex ring (7) is provided on the inner wall of the auxiliary sleeve (6) opposite to the limiting ring groove (4). The longitudinal cross section of the limiting convex ring (7) is in the shape of an arc. A guide fillet 2 (8) is provided at the connection between the limiting convex ring (7) and the auxiliary sleeve (6), and the center of the guide fillet 2 (8) falls on one side of the inner hole of the auxiliary sleeve (6). The limiting convex ring (7) is used to press the hydraulic pipe into the limiting ring groove (4).

2. A highly sealed hydraulic pipe joint according to claim 1, Its characteristics are: The auxiliary sleeve (6) comprises a detachably connected left connecting flap (61) and a right connecting flap (62).

3. A highly sealed hydraulic pipe joint according to claim 2, Its characteristics are: The upper end of the left connecting flap (61) is hingedly connected to the upper end of the right connecting flap (62), and the auxiliary sleeve (6) also includes a threaded member (63), and the threaded member (63) presses and fixes the lower end of the left connecting flap (61) and the lower end of the right connecting flap (62).

4. A highly sealed hydraulic pipe joint according to claim 3, Its characteristics are: The threaded member (63) includes a connecting bolt (631) and a connecting nut (632), wherein the connecting bolt (631) is rotatably connected to the lower end of the left connecting flap (61), the threaded section of the connecting bolt (631) passes through the right connecting flap (62), and the connecting nut (632) is threadedly connected to the threaded section of the connecting bolt (631).

5. A highly sealed hydraulic pipe joint according to claim 4, Its characteristics are: The inner walls of the left connecting flap (61) and the right connecting flap (62) are both provided with T-shaped mounting grooves (9) along the circumferential direction, and the outer ring of the limiting convex ring (7) is provided with a T-shaped mounting block (10), and the T-shaped mounting block (10) is clamped in the T-shaped mounting groove (9).

6. A highly sealed hydraulic pipe joint according to claim 1, Its characteristics are: A positioning annular groove (11) is provided on the outer wall of the liquid inlet end (2), and a positioning protrusion (12) is provided on the inner wall of the auxiliary sleeve (6), and the positioning protrusion (12) is clamped in the positioning annular groove (11).

7. A highly sealed hydraulic pipe joint according to claim 6, Its characteristics are: The end of the positioning protrusion (12) is reduced in diameter to form a guide end (121), and the guide end (121) is used to guide the positioning protrusion (12) to penetrate deeply into the positioning ring groove (11).

Images