Hose sealing joint assembly

Abstract

The utility model relates to the field of hose joints, and provides a hose sealing joint assembly which comprises a sealing core body and a sealing sleeve, the sealing core body comprises a core body main body, a reverse buckling ring is arranged on the surface of the inlet end of the core body main body, and external threads are arranged on the surface of the side, away from the inlet end, of the reverse buckling ring of the core body main body. A groove ring is arranged on the surface of the core main body between the back-off ring and the external thread; and the inner surface of the sealing sleeve is matched with the external thread, the groove ring and the reverse buckle ring, and is used for locking a hose on the sealing core body. The sealing joint assembly has the advantages that (1) double fixation is carried out by arranging the back-off ring, the groove ring and the external thread of the sealing core body and matching with the sealing sleeve, so that the sealing performance of the sealing joint assembly on a hose is greatly improved; and (2) the contact area between the hose and the inclined surface is reduced through the arrangement of the step structure on the inclined surface, so that the friction force when the sealing sleeve is assembled on the sealing core body is reduced, and the operation is simpler and more convenient. And (3) through the arrangement of a buffer structure, the damage probability of the hose is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hose joint, more particularly to a hose sealing joint assembly. BACKGROUND

[0002] The hose joint is the part of the hose connected with the hose or other parts, and the hose includes several types such as stainless steel hose, metal hose, corrugated hose, rubber hose and plastic hose, and the hose joints of different types are also different, and the metal hose joint is mainly on the market.

[0003] The existing hose sealing joint still has some deficiencies:

[0004] The first sealing joint 100 of the hose 300, as shown in the figure, although there is a reverse buckle design for limiting, the fastening effect is still limited, and when the pressure in the pipe is large, the liquid in the pipe still has the risk of leakage. Figure 1

[0005] The second sealing joint 100 of the hose 300, as shown in the figure, increases a clamp 200 on the basis of the first sealing joint, but the clamp is at the edge of the hose, and when the pressure in the pipe is large, the clamp is easy to loosen, and the contact area is small, and the fixing force is also limited. Figure 2

[0006] The third sealing joint 100 of the hose 300, as shown in the figure, has no reverse buckle design for limiting, is easy to loosen, and the reliability and air tightness are difficult to guarantee. Figure 3

[0007] The fourth sealing joint 100 of the hose 300, as shown in the figure, although there is a fixing nut 110, but there is a risk of loosening outward during the tightening of the nut, which leads to the failure to guarantee the assembly effect, and the air tightness is difficult to guarantee. Figure 4

[0008] Therefore, it has great practical significance to study a sealing joint with good sealing performance. UTILITY MODEL CONTENTS

[0009] The utility model aims at overcoming at least one defect (deficiency) of the prior art, and provides a hose sealing joint assembly to improve the sealing performance.

[0010] The utility model takes the technical scheme that provides a hose sealing joint assembly, which comprises a sealing core body and a sealing sleeve, the sealing core body comprises a core body main body, a reverse buckle ring is arranged on the surface of the inlet end of the core body main body, an outer thread is arranged on the surface of the side of the core body main body away from the inlet end of the reverse buckle ring, and a groove ring is arranged on the surface of the core body main body between the reverse buckle ring and the outer thread.

[0011] ​​​​The inner surface of the sealing sleeve matches with the external thread, the groove ring and the reverse thread ring, which is used to lock the hose on the sealing core.

[0012] In the technical solution, the inlet end of the core body is one end into which the hose is sleeved, and the reverse thread ring can expand the hose so that the hose can be tightly sleeved on the sealing core, improving the sealing performance of the hose; and the reverse thread ring is arranged at the inlet end, so that the hose can be sealed only by sleeving a small part, improving the sealing efficiency of the staff.

[0013] The groove ring is arranged at the side of the reverse thread ring away from the inlet end of the core body, and after the hose sleeved in the reverse thread ring is expanded by the reverse thread ring, the hose is contracted in the groove ring, so that the hose is not easy to be loosened on the sealing core, improving the tightness of the hose on the sealing core.

[0014] The sealing sleeve is connected and fixed to the sealing core, and the hose is clamped between the two for secondary fastening, greatly improving the tightness of the hose on the sealing core, especially when the pressure in the pipe is large or the external environment is unstable, the hose can still not be loosened, further preventing the leakage of the liquid in the pipe.

[0015] Further, the outer diameter of the reverse thread ring gradually decreases in the direction of the inlet end, and an inclined guide surface is formed on the surface of the reverse thread ring.

[0016] In the technical solution, the reverse thread ring is in the shape of an inverted truncated cone, that is, the diameter of the reverse thread ring at the inlet end is small, and the diameter of the reverse thread ring at the side away from the inlet end of the core body is large, so that the hose is not expanded when sleeving into the core body, facilitating the sleeving of the hose, and reducing the difficulty of aligning the inlet end of the sealing core and the opening of the hose, thereby improving the efficiency of the sealing connection.

[0017] Further, the side of the reverse thread ring away from the inlet end is provided with a buffer structure.

[0018] In the technical solution, the buffer structure is used to reduce the probability of damage to the hose. The side of the reverse thread ring away from the inlet end will expand the hose, and the hose is subjected to a large force, so the buffer structure can prevent the edge of the reverse thread ring from damaging the hose, thereby prolonging the service life of the hose, reducing the cost of maintenance of the hose, and optimizing the use experience of the user.

[0019] Further, the buffer structure is a straight line segment, and an outer surface of the straight line segment is connected with the guide surface.

[0020] In the technical solution, the design of the straight line segment makes the inclined guide surface stop inclining when the soft tube is expanded to a certain extent, reduces the expansion degree of the soft tube at the edge of the reverse buckling ring, and thus reduces the stress of the soft tube at the edge, so as to avoid damage of the soft tube at the edge.

[0021] In addition, if the straight line segment is not arranged, the longer the reverse buckling ring is, the greater the inclination of the edge of the reverse buckling ring is, and the greater the stress of the soft tube at the edge is. After the straight line segment is arranged, the reverse buckling ring can be lengthened without increasing the stress of the edge, so that the contact area of the soft tube and the reverse buckling ring is increased, and the connection of the two is more reliable.

[0022] Further, the length of the guide surface in the axial direction is 5-25 times the length of the straight line segment in the axial direction.

[0023] In the technical solution, the length of the guide surface is much greater than the length of the straight line segment, so that the guide surface can guide the soft tube, and there is enough inclined segment to make the guide surface incline to expand the soft tube and then connect the straight line segment, so as to further ensure the reliability of the connection of the soft tube and the reverse buckling ring. In addition, the long guide surface can lengthen the inclination distance, so that the inclination angle is not too large due to the small inclination distance, so that a transition buffer is provided for the soft tube, so as to reduce the damage probability of the soft tube and save maintenance and repair costs. At the same time, the inclined guide surface is longer than the straight line segment, so that the production materials can be saved and the production cost can be saved.

[0024] Further, the buffer structure is a round corner.

[0025] In the technical solution, the edge of the reverse buckling ring away from the inlet end of the core body is designed as a round corner. Compared with a sharp corner design, the round corner edge can increase the stress surface of the soft tube at the edge, reduce the unit area stress of the soft tube, and thus reduce the damage rate of the soft tube and reduce the maintenance and repair costs.

[0026] Further, the inner surface of the sealing sleeve is provided with an inner thread, a straight surface and an inclined surface connected therewith, the inner thread and the outer thread are matched, the straight surface is matched with the groove ring and the buffer structure, and the inclined surface is matched with the guide surface of the reverse buckling ring.

[0027] In the technical solution, the sealing sleeve is firmly connected to the sealing core body through the inner thread and the outer thread connection; the inner surface corresponding to the groove ring and the buffer structure is directly designed as a straight surface without special processing, thereby reducing unnecessary processing; the straight surface herein can be understood as a circular ring surface; the inclined surface and the guide surface clamp the hose, further preventing the hose from falling off, and the inclined surface forms a shape of an inverted circular table.

[0028] Further, the inner diameter of the inclined surface gradually decreases in the direction close to the inlet end to form a stepped structure.

[0029] In the technical solution, when the stepped structure is arranged on the inclined surface, the hose only contacts the convex part of the stepped structure, thereby reducing the contact area of the hose and the inclined surface, reducing the friction force of the sealing sleeve when assembled on the sealing core body, and making the operation more convenient.

[0030] Further, a spacing space is arranged between the straight surface and the groove ring.

[0031] In the technical solution, the spacing space is arranged to prevent the hose surface at the groove ring from contacting the straight surface, thereby avoiding friction therebetween and facilitating the assembly of the sealing sleeve on the sealing core body.

[0032] Further, the length of the inverted ring is 2-8 times the length of the groove ring.

[0033] In the technical solution, the length of the inverted ring is much longer than the length of the groove ring, so that a sufficient part of the hose is stretched on the inverted ring for fixation and is contracted on the groove ring, thereby ensuring the firmness of the hose on the inverted ring and preventing the hose from loosening when the outer thread and the inner thread are connected.

[0034] Compared with the prior art, the utility model has the advantages that:

[0035] (1) The sealing core body, the inverted ring, the groove ring and the outer thread are arranged and cooperated with the sealing sleeve to achieve double fixation, thereby greatly improving the sealing performance of the sealing joint assembly on the hose.

[0036] (2) The stepped structure arranged on the inclined surface reduces the contact area of the hose and the inclined surface, thereby reducing the friction force of the sealing sleeve when assembled on the sealing core body and making the operation more convenient.

[0037] (3) The utility model discloses a buffer structure's setting reduces the probability of hose damage. The end of the inverted ring far from the inlet end will open the hose, and the hose is under great stress, and the setting of the buffer structure can prevent the edge of the inverted ring from damaging the hose, thereby prolonging the service life of the hose, reducing the cost of hose maintenance and optimizing the user's use experience. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a first kind of hose sealing joint structure schematic view of prior art.

[0039] Figure 2 It is a second kind of hose sealing joint structure schematic view of prior art.

[0040] Figure 3 It is a third kind of hose sealing joint structure schematic view of prior art.

[0041] Figure 4 It is a fourth kind of hose sealing joint structure schematic view of prior art.

[0042] Figure 5 It is a sealing core structure schematic view of embodiment 1.

[0043] Figure 6 It is a sealing sleeve structure schematic view of embodiment 1.

[0044] Figure 7 It is Figure 5 The enlarged view of A in the middle.

[0045] Figure 8 It is a middle interval space structure schematic view of embodiment.

[0046] Figure 9 It is a sealing core partial structure schematic view of embodiment 2.

[0047] Figure 10 It is a stepped structure schematic view of embodiment 3.

[0048] Figure 11 It is a sealing core, sealing sleeve and hose cooperation structure schematic view of embodiment 3.

[0049] Figure 12 It is Figure 11 The enlarged view of B in the middle.

[0050] Sealing joint 100, fixing nut 110, clamp 200, hose 300, sealing core 400, reverse buckle ring 410, guide surface 411, buffer structure 412, groove ring 420, external thread 430, core body 440, sealing sleeve 500, internal thread 510, straight surface 520, interval space 521, inclined surface 530, stepped structure 531. DETAILED DESCRIPTION

[0051] The drawings of the utility model are only used for example description, and cannot be understood as the limitation of the utility model. In order to better illustrate the following embodiments, some components of the drawings can be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0052] Embodiment 1

[0053] Reference Figure 5 And Figure 6 The embodiment provides a hose sealing joint assembly, which comprises a sealing core 400 and a sealing sleeve 500, the sealing core 400 comprises a core body 440, the inlet end surface of the core body 440 is provided with a reverse buckle ring 410, the side surface of the core body 440 away from the inlet end of the reverse buckle ring 410 is provided with an external thread 430, and the surface of the core body 440 between the reverse buckle ring 410 and the external thread 430 is provided with a groove ring 420; the inner surface of the sealing sleeve 500 is matched with the external thread 430, the groove ring 420 and the reverse buckle ring 410, and the sealing sleeve 500 is used for locking a hose 300 on the sealing core 400. The length of the reverse buckle ring 410 is 2 to 8 times, for example, 4 times, 5 times or 6 times of the length of the groove ring 420.

[0054] The inlet end of the core body 440 is one end of the hose 300, the reverse buckle ring 410 can make the hose 300 be expanded, so that the hose 300 can be tightly sleeved on the sealing core 400, and the sealing property of the hose 300 is improved; the reverse buckle ring 410 is arranged at the inlet end, so that the hose 300 only needs to be sleeved in a small part and can be sealed, and the sealing efficiency of the staff is improved. The reverse buckle structure can be cylindrical, circular truncated cone or inverted circular truncated cone.

[0055] The groove ring 420 is arranged at the side of the reverse buckle ring 410 away from the inlet end of the core body 440, when the hose 300 is sleeved in the reverse buckle ring 410 and is expanded by the reverse buckle ring 410, the hose 300 is contracted in the groove ring 420, so that the hose 300 is not easy to be loosened on the sealing core 400, and the firmness of the hose 300 on the sealing core 400 is improved.

[0056] The sealing sleeve 500 is connected and fixed on the sealing core 400, the hose 300 is clamped between the two for secondary fastening, which greatly improves the firmness of the hose 300 on the sealing core 400, especially when the pressure in the pipe is large or the external environment is unstable, the hose 300 can still not be loose, further preventing the leakage of the liquid in the pipe. And because of the setting of the reverse buckle ring 410 and the groove ring 420, the hose 300 can be firmly sleeved on the sealing core 400, so that the hose 300 can be effectively prevented from loosening during the connection and fixation of the external thread 430 and the inner surface of the sealing sleeve 500, improving the sealing and firmness, and avoiding the low work efficiency caused by resealing due to loosening.

[0057] In the embodiment, the length of the reverse buckle ring 410 is much longer than the length of the groove ring 420, so that a sufficient part of the hose 300 is stretched and fixed on the reverse buckle ring 410, and then shrunk on the groove ring 420, ensuring the firmness of the hose 300 on the reverse buckle ring 410, so that the hose 300 is not easy to loosen when the external thread 430 and the internal thread 510 are connected and matched.

[0058] Reference Figure 5 Preferably, the outer diameter of the reverse buckle ring 410 gradually decreases in the direction of the inlet end, and the surface forms an inclined guide surface 411.

[0059] The reverse buckle ring 410 forms a reverse circular truncated cone, that is, the diameter of the reverse buckle ring 410 decreases in the direction of the inlet end, and the diameter of the end away from the inlet end of the core body 440 is large, so that the hose 300 will not be stretched when it is sleeved into the core body 440, facilitating the sleeving of the hose 300, and reducing the difficulty of aligning the inlet end of the sealing core 400 and the opening of the hose 300, thereby improving the efficiency of the sealing connection. Compared with the design of the cylindrical reverse buckle ring 410, the design of the reverse circular truncated cone can save materials, save production costs, and reduce the overall weight of the sealing core 400, facilitating transportation.

[0060] Reference Figure 7 Preferably, the end of the reverse buckle ring 410 away from the inlet end is provided with a buffer structure 412. More preferably, the buffer structure 412 is a straight line segment, and the outer surface of the straight line segment is connected with the guide surface 411.

[0061] The buffer structure 412 is used to reduce the probability of damage to the hose 300. The end of the reverse buckle ring 410 away from the inlet end will stretch the hose 300, and the hose 300 is under great stress, so the setting of the buffer structure 412 can prevent the edge of the reverse buckle ring 410 from damaging the hose 300, thereby prolonging the service life of the hose 300, reducing the maintenance cost of the hose 300, and optimizing the user's use experience.

[0062] The straight line segment is designed to make the inclined guide surface 411 stop inclining when the hose 300 is stretched to a certain extent, so as to reduce the stretching degree of the hose 300 at the edge of the reverse buckle ring 410, thereby reducing the stress of the hose 300 at the edge, and avoiding damage to the hose 300 at the edge. In addition, if the straight line segment is not provided, the longer the reverse buckle ring 410 is, the greater the inclination of the edge of the reverse buckle ring 410 is, and the greater the stress of the hose 300 at the edge is. After the straight line segment is provided, the reverse buckle ring 410 can be lengthened without increasing the stress of the edge of the reverse buckle ring 410, so as to increase the contact area of the hose 300 and the reverse buckle ring 410, and make the connection of the hose 300 and the reverse buckle ring 410 more reliable.

[0063] Specifically, the length of the guide surface 411 in the axial direction is 5-25 times, for example, 6 times, 10 times, 15 times or 20 times, etc., of the length of the straight line segment in the axial direction.

[0064] The length of the guide surface 411 is much greater than the length of the straight line segment, which ensures that the guide surface 411 can guide the hose 300, and there is enough inclined segment to make the guide surface 411 incline to stretch the hose 300 and then connect the straight line segment, thereby further ensuring the reliability of the connection of the hose 300 and the reverse buckle ring 410. In addition, the long enough guide surface 411 can lengthen the inclination distance, avoid the inclination distance being too small to make the inclination angle too large, so as to provide a transition buffer for the hose 300, thereby reducing the probability of damage to the hose 300 and saving maintenance costs. At the same time, the inclined guide surface 411 is longer than the straight line segment, which can save production materials and production costs.

[0065] Reference Figure 6 And Figure 8 Preferably, the inner surface of the sealing sleeve 500 is provided with an inner thread 510 connected thereto, a straight surface 520 and an inclined surface 530, the inner thread 510 and the outer thread 430 are matched, the straight surface 520 is matched with the groove ring 420 and the buffer structure 412, and the inclined surface 530 is matched with the guide surface 411 of the reverse buckle ring 410.

[0066] The sealing sleeve 500 is firmly connected to the sealing core 400 through the connection of the inner thread 510 and the outer thread 430; the inner surface corresponding to the groove ring 420 and the buffer structure 412 does not need to be specially processed, but is directly designed as a straight surface 520, thereby reducing unnecessary processing. The straight surface 520 here can be understood as a circular surface; the inclined surface 530 clamps the hose 300 with the guide surface 411, further preventing the hose 300 from falling off, and the inclined surface 530 forms a shape of an inverted circular truncated cone. In this scheme, the part clamping the hose 300 is still a distance away from the pipe opening, so even if the hose 300 is partially loosened due to a large pressure in the pipe, it is not easy to be completely loosened from the sealing joint assembly, thereby further ensuring the reliability of the sealing joint.

[0067] Reference Figure 8 Preferably, a spacing space 521 is arranged between the straight surface 520 and the groove ring 420.

[0068] The arrangement of the spacing space 521 can make the straight surface 520 not contact the surface of the hose 300 at the groove ring 420, avoid friction between the two, and facilitate the assembly of the sealing sleeve 500 on the sealing core 400. Since the hose 300 at the groove ring 420 is contracted relative to the reverse buckle ring 410, if pressure is applied to the hose 300 at this position, the pressure of the hose 300 at the edge of the reverse buckle ring 410 will increase. Therefore, the spacing design at this position further avoids damage to the hose 300.

[0069] Embodiment 2

[0070] Reference Figure 9 The sealing hose joint assembly provided in the embodiment has a structure similar to that of Embodiment 1, and the difference lies in that the buffer structure 412 is a round corner.

[0071] The edge of the reverse buckle ring 410 on the side away from the inlet end of the core body 440 is designed as a round corner. Compared with a sharp corner design, the round corner edge can increase the force bearing surface of the hose 300 at the edge, reduce the unit area force of the hose 300, and thus reduce the damage rate of the hose 300 and the maintenance cost.

[0072] Embodiment 3

[0073] Reference Figure 10 to Figure 12 The sealing hose joint assembly provided in the embodiment has a structure similar to that of Embodiment 1, and the difference lies in that the inner diameter of the inclined surface 530 gradually decreases in the direction towards the inlet end to form a stepped structure 531. When the stepped structure 531 is arranged on the inclined surface 530, the hose 300 only contacts the convex part of the stepped structure 531, thereby reducing the contact area of the hose 300 and the inclined surface 530, and thus reducing the friction force when the sealing sleeve 500 is assembled on the sealing core 400, making the operation more convenient.

[0074] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the technical scheme of the utility model, and are not a limitation on the specific embodiments of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model claim shall be included in the protection scope of the utility model claim.

Claims

1. A hose seal coupling assembly characterised in that, The utility model relates to a sealing core and sealing sleeve, The sealing core comprises a core body, the inlet end surface of the core body is provided with a reverse thread ring, the surface of the core body on the side of the reverse thread ring away from the inlet end is provided with an external thread, and the surface of the core body between the reverse thread ring and the external thread is provided with a groove ring; The inner surface of the sealing sleeve matches the external thread, the groove ring and the reverse thread ring, and is used for locking a hose on the sealing core; The outer diameter of the reverse thread ring gradually decreases in the direction of the inlet end, and the surface of the reverse thread ring forms an inclined guide surface; The end of the reverse thread ring away from the inlet end is provided with a buffer structure; The buffer structure is a straight line segment, and the outer surface of the straight line segment is connected with the guide surface. The length of the guide surface in the axial direction is 5-25 times the length of the straight line segment in the axial direction.

2. The hose seal joint assembly of claim 1, wherein, The buffer structure is a round corner.

3. The hose seal joint assembly of claim 1, wherein, The inner surface of the sealing sleeve is provided with an inner thread, a straight surface and an inclined surface connected with each other, the inner thread matches the external thread, the straight surface matches the groove ring and the buffer structure, and the inclined surface matches the guide surface of the reverse thread ring.

4. The hose seal joint assembly of claim 1, wherein, In the direction close to the inlet end, the inner diameter of the inclined surface gradually decreases to form a stepped structure.

5. The hose seal joint assembly of claim 4, wherein, The straight surface and the groove ring are provided with a spacing space.

6. The hose seal joint assembly of claim 4, wherein, The length of the reverse thread ring is 2-8 times the length of the groove ring.

7. The hose seal joint assembly of any one of claims 1-6, wherein, ​

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