A quick-connect pipe fitting and a pipe

Abstract

The present invention provides a quick-connect pipe fitting and pipeline, relating to the field of pipeline connection. The quick-connect pipe fitting comprises a pipe fitting body, a sealing ring, a conical washer, an elastic gear ring, an outer sleeve, and a compression sleeve. At least one end of the pipe fitting body is provided with an annular pipe body, the pipe body is provided with a socket, the opening of the socket is provided with a stepped hole, one end of the outer sleeve is provided with an annular inner hole, the annular inner hole is provided with a connecting portion and a retaining ring for detachable connection with the pipe body, the inner ring of the retaining ring is provided with a convex ring, the sealing ring is disposed in the stepped hole, the conical washer and the elastic gear ring are installed between the sealing ring and the retaining ring, the elastic gear ring is provided with a latching tooth, and the ends of the compression sleeve are provided with a pressure ring and a conical buckle, respectively, forming a sliding groove between the pressure ring and the conical buckle. The conical buckle is inserted into the annular inner hole, and the convex ring is locked in the sliding groove. The conical buckle is used to abut the elastic gear ring and selectively push open the latching tooth. The overall structure is simple, the production cost is low, the production and assembly efficiency is high, and it is easy to promote.

Description

Technical Field

[0001] The present invention relates to the field of pipeline connection, in particular to a quick-connect pipe fitting and a pipeline. Background Art

[0002] In the existing pipeline connection field, externally sealed connectors that can be quickly connected and installed offer advantages over conventional fittings such as compression and nut-and-sleeve connectors, such as easy and quick installation and removal, a large flow path, and high construction efficiency. Consequently, this connection technology has gained increasing attention in the pipeline industry and is widely used in the field. However, despite these advantages, these fittings also have inevitable disadvantages. For example, their complex structure leads to low production and assembly efficiency, resulting in high production costs and increased difficulty in promotion.

[0003] In view of this, this application is hereby filed. Summary of the Invention

[0004] The objects of the present invention include, for example, providing a quick-connect pipe fitting and a pipeline that can be assembled quickly and is easy to operate.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In the first aspect, the present invention provides a quick-connect pipe fitting, comprising a pipe fitting body, a sealing ring, a conical gasket, an elastic gear ring, an outer sleeve and a compression sleeve, wherein at least one end of the pipe fitting body is provided with an annular pipe body, a socket for inserting a pipe is provided in the pipe body, a stepped hole is provided at the opening of the socket, an annular inner hole is provided at one end of the outer sleeve, a connection portion for detachably connecting to the pipe body is provided at a position of the annular inner hole near the port; a retaining ring is provided at a position of the annular inner hole away from the port, and the inner ring of the retaining ring is provided with The convex ring, the sealing ring is arranged in the stepped hole, the conical pad and the elastic gear ring are installed between the sealing ring and the retaining ring in sequence, the elastic gear ring is provided with a clamping tooth for clamping the pipe, and a pressure ring and a conical buckle are respectively provided at both ends of the pressing sleeve, a sliding groove is formed between the pressure ring and the conical buckle, the conical buckle is inserted in the annular inner hole and the convex ring is clamped in the sliding groove, the sliding groove is slidable relative to the convex ring, and the conical buckle is used to abut against the elastic gear ring and selectively push open the clamping tooth.

[0007] In an optional embodiment, the tube body and the connecting part are detachably connected via an elastic snap ring; an annular outer groove is provided on the outer circle of the tube body, the elastic snap ring is arranged in the annular outer groove, and the elastic snap ring is clamped or threadedly connected to the connecting part. When the elastic snap ring is clamped to the connecting part, the connecting part is an annular inner groove, and the elastic snap ring is clamped in the annular inner groove; when the elastic snap ring is threadedly connected to the connecting part, the outer cylindrical surface of the elastic snap ring is provided with an external thread, and the inner wall of the annular inner hole is provided with an internal thread matching the external thread.

[0008] In an optional embodiment, a stop buckle is provided on the elastic clamping ring, and a plurality of buckle grooves that cooperate with the stop buckle are provided on the outer shell near the port of the connecting portion.

[0009] In an optional embodiment, an annular flange is provided at one end of the elastic clamping ring away from the outer shell, the end face of the outer shell abuts against the end face of the annular flange, and the shape of the annular flange is polygonal.

[0010] In an optional embodiment, an elastic annular filler is provided between the elastic clamping ring and the annular outer groove.

[0011] In an optional embodiment, the quick-connect pipe fitting further comprises an inner support member, one end of the inner support member is provided with a round tube member which can be inserted into the pipe, the end of the inner support member away from the round tube member is further provided with a plug for judging the connection status, the end of the socket away from its opening is provided with first circumferentially uniformly distributed convex teeth, the plug is provided with second convex teeth, and the first convex teeth and the second convex teeth are meshed.

[0012] In an optional embodiment, a ridge is provided between the insert and the round tube, and the outer diameter of the ridge is greater than the inner diameter of the tube.

[0013] In an optional embodiment, the threaded end of the elastic snap ring, the tapered buckle and the insert are all provided with notches for facilitating insertion.

[0014] In an optional embodiment, the pipe body includes a straight pipe, an elbow pipe or a tee pipe.

[0015] In a second aspect, the present invention provides a pipeline comprising at least two pipes and a quick-connect pipe fitting as described in any one of the aforementioned embodiments, wherein at least two adjacent pipes are connected by the quick-connect pipe fitting.

[0016] The beneficial effects of the embodiments of the present invention include, for example:

[0017] The embodiment of the present invention provides a quick-connect pipe fitting, which realizes the insertion of the pipe through the socket hole set on the pipe body, the sealing ring can realize the sealed connection between the pipe body and the pipe to prevent the leakage of the fluid in the pipe, the elastic gear ring can realize the clamping and fixation of the pipe, and the setting of the outer shell can realize its detachable connection to the pipe body and realize the fixation of the sealing ring, the conical gasket and the elastic gear ring, and the setting of the compression sleeve can squeeze the elastic gear ring under the action of external force, so that the locking teeth on the elastic gear ring loosen, thereby realizing the disassembly of the pipe. Therefore, the quick-connect pipe fitting provided by the present application can quickly realize the installation and disassembly of the pipe, and its overall structure is simple, the production cost is low, the production and assembly efficiency is high, and it is conducive to promotion. In addition, the pipeline of the embodiment of the present invention is easy to install and disassemble, which greatly improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional exploded view of a quick-connect pipe fitting provided by an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a quick-connect fitting provided by an embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of the connection state between a quick-connect fitting and a pipe provided in an embodiment of the present invention.

[0022] Icons: 100-Quick Connect Fitting; 110-Fitting Body; 111-Pipe Body; 112-Socket; 113-Stepped Hole; 114-Annular Outer Groove; 115-First Protruding Tooth; 120-Elastic Snap Ring; 121-Annular Filler; 122-External Thread; 123-Stop Buckle; 124-Annular Flange; 125-First Notch; 130-Sealing Ring; 140-Conical Washer; 150-Elastic Gear Ring; 151 - latching teeth; 160 - outer shell; 161 - annular inner hole; 162 - connecting part; 163 - retaining ring; 164 - convex ring; 165 - buckle groove; 170 - pressing sleeve; 171 - pressure ring; 172 - conical buckle; 173 - sliding groove; 174 - second notch; 180 - inner support member; 181 - round tube member; 182 - insert; 183 - convex ridge; 184 - third notch; 185 - second convex tooth; 200 - pipe. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0028] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0029] Please refer to Figure 1 and Figure 2 This embodiment provides a quick-connect pipe fitting 100, comprising a pipe fitting body 110, an elastic retaining ring 120, a sealing ring 130, a conical washer 140, an elastic gear ring 150, an outer sleeve 160, a compression sleeve 170, and an inner support member 180. In this application, the pipe fitting body 110 can be a straight pipe, an elbow pipe, or a tee pipe. This embodiment uses a straight pipe of uniform diameter as an example.

[0030] In this embodiment, at least one end of the pipe body 110 is provided with an annular pipe body 111. Since the pipe body 110 in this embodiment is a straight-through pipe of equal diameter, an annular pipe body 111 is provided at both ends. The annular pipe body 111 at any end is connected with an elastic retaining ring 120, a sealing ring 130, a conical gasket 140, an elastic gear ring 150, an outer shell 160, a pressing sleeve 170 and an inner support member 180. Next, one end is mainly explained, and the other end is symmetrically arranged with it and has the same structure.

[0031] The tube body 111 is provided with a socket 112 for inserting the pipe 200. A stepped hole 113 is provided at the opening of the socket 112. The inner diameter of the stepped hole 113 is larger than that of the socket 112 to facilitate the installation of the sealing ring 130, the conical washer 140, and the elastic gear ring 150. In this embodiment, an annular outer groove 114 is provided on the outer circumference of the tube body 111 for mounting the elastic retaining ring 120. Furthermore, first protruding teeth 115 are uniformly distributed along the circumference of the socket 112 at the end away from the opening.

[0032] An annular inner hole 161 is provided at one end of the outer shell 160, and a connecting portion 162 for detachable connection with the tube body 111 is provided near the port of the annular inner hole 161; a retaining ring 163 is provided at the position of the annular inner hole 161 away from the port, and a convex ring 164 is provided on the inner ring of the retaining ring 163.

[0033] Specifically, in this embodiment, the tube body 111 and the connecting portion 162 are detachably connected via an elastic snap ring 120; the elastic snap ring 120 is an annular structure, and an annular outer groove 114 is provided on the outer circle of the tube body 111, and the elastic snap ring 120 is arranged in the annular outer groove 114. The elastic snap ring 120 is provided with a first notch 125 for easy sleeve installation on the tube body 111. The setting of the first notch 125 allows the diameter of the spring snap ring to be changed, making it easier to sleeve on the tube body 111. An elastic annular filler 121 is provided between the elastic snap ring 120 and the annular outer groove 114. The setting of the annular filler 121 can make the connection between the elastic snap ring 120 and the annular outer groove 114 tighter, thereby avoiding the loosening of the elastic snap ring 120. The cross-sectional shape of the annular filler 121 can be a circular, square, or trapezoidal elastic material.

[0034] The elastic snap ring 120 and the connecting portion 162 are detachable by means of a snap or threaded connection. When the elastic snap ring 120 is snapped into the connecting portion 162, the tube body 111 and the outer shell 160 are snap-fitted together. In this case, the connecting portion 162 is an annular inner groove, and the elastic snap ring 120 is snapped into the annular inner groove. When the elastic snap ring 120 is threadedly connected to the connecting portion 162, the tube body 111 and the outer shell 160 are threadedly connected together. In this case, the outer cylindrical surface of the elastic snap ring 120 is provided with an external thread 122, and the inner wall of the annular inner hole 161 is provided with an internal thread that cooperates with the external thread 122.

[0035] The elastic snap ring 120 is provided with a locking buckle 123, and the outer shell 160 is provided with a plurality of locking grooves 165 that cooperate with the locking buckles 123 at the end near the connecting portion 162. When the elastic snap ring 120 is fully connected to the outer shell 160, the locking buckles 123 snap into the locking grooves 165, preventing the elastic snap ring 120 from becoming loose from the outer shell 160. In addition, in the present application, the end of the elastic snap ring 120 away from the outer shell 160 is provided with an annular flange 124, and the end surface of the outer shell 160 abuts against the end surface of the annular flange 124. The annular flange 124 is polygonal in shape. The provision of the annular flange 124 facilitates the clamping and fixing of the elastic snap ring 120 during assembly, making assembly easier.

[0036] The sealing ring 130 is disposed in the stepped hole 113 . The provision of the sealing ring 130 can ensure the sealing between the tube 200 and the tube body 111 of this embodiment, thereby preventing leakage of the fluid in the tube 200 .

[0037] The conical washer 140 and the elastic ring gear 150 are sequentially installed between the sealing ring 130 and the retaining ring 163. One end of the conical washer has a stepped shape, partially locked in the stepped hole 113, while the other portion abuts the circular end face of the pipe. The other end of the conical washer is tapered and embedded in the elastic ring gear 150. The elastic ring gear 150 is provided with a latching tooth 151 for latching the pipe 200. The latching tooth 151 can clamp and secure the pipe 200 inserted into the socket 112 of the pipe body 111.

[0038] The two ends of the pressing sleeve 170 are respectively provided with a pressure ring 171 and a tapered buckle 172, and a sliding groove 173 is formed between the pressure ring 171 and the tapered buckle 172. The pressure ring 171 is located on the inner side of the end of the outer shell 160 away from the connecting portion 162. In this application, the end of the outer shell 160 away from the connecting portion 162 is an arc-shaped structure and the center of the arc is located inside the outer shell 160. Such a setting can directly apply pressure to the outer shell 160 and then apply pressure to the pressure ring 171. In this embodiment, the tapered buckle 172 is provided with a second notch 174 for its insertion. 72 is inserted into the annular inner hole 161 and the convex ring 164 is clamped in the sliding groove 173, the sliding groove 173 is slidable relative to the convex ring 164, and the tapered buckle 172 is used to abut against the elastic gear ring 150 and selectively push open the locking teeth 151; when pressure is applied to the pressure ring 171, the pressure ring 171 can push the sliding groove 173 to slide relative to the convex ring 164, thereby pushing the tapered buckle 172 toward the direction close to the elastic gear ring 150. At this time, the tapered buckle 172 pushes open the locking teeth 151 of the elastic gear ring 150, and the pipe 200 fixed by the elastic gear ring 150 can be easily disassembled.

[0039] The inner support member 180 is used to insert the pipe 200 into the socket 112 of the pipe body 111. In this embodiment, one end of the inner support member 180 is provided with a round pipe member 181 that can be inserted into the pipe 200. The end of the inner support member 180 away from the round pipe member 181 is also provided with an insert 182 for judging the connection status. A ridge 183 is provided between the insert 182 and the round pipe member 181, and the outer diameter of the ridge 183 is larger than the inner diameter of the pipe 200. The round tube 181 can be directly inserted into the interior of the pipe 200. The insertion depth of the round tube 181 is limited by the ridge 183. Then, the pipe 200 (i.e., the portion of the insert 182) with the round tube 181 inserted is inserted into the socket 112 of the pipe body 111. The insert 182 is provided with a third notch 184 to facilitate insertion. During the insertion process, the pipe 200 is fixed by the teeth 151 of the elastic gear ring 150, thereby achieving the assembly of the pipe 200. In addition, in the present application, the insert 182 is provided with a second protruding tooth 185. The first protruding tooth 115 and the second protruding tooth 185 provided in the socket 112 engage with each other. When the first protruding tooth 115 and the second protruding tooth 185 engage, they will vibrate or make a sound, which can prove that the pipe 200 has been inserted into the socket. If there is no vibration or sound, it proves that the pipe 200 has not yet been inserted into the socket. The arrangement of the first protruding teeth 115 and the second protruding teeth 185 facilitates the assembly personnel to determine the socket position. When the pipe 200 needs to be removed, the pressure ring 171 is squeezed to move the pressure ring 171 toward the elastic gear ring 150. When the tapered buckle 172 pushes open the locking teeth 151 of the elastic gear ring 150, the pipe 200 can be removed.

[0040] See also Figure 1 、 Figure 2 and Figure 3 According to the working principle of the quick-connect pipe fitting 100 provided in this embodiment, the elastic clamping ring 120 is installed in the annular outer groove 114 of the pipe body 111, and then the sealing ring 130 is set in the stepped hole 113. The conical washer 140 and the elastic gear ring 150 are installed in sequence on the side of the sealing ring 130 away from the stepped hole 113. At the same time, the outer shell 160 is installed, and the outer shell 160 is snap-fitted or threadedly connected to the elastic clamping ring 120. After the connection is in place, the stop buckle 123 on the elastic clamping ring 120 and the buckle groove on the outer shell 160 are connected. 165 cooperate with each other to prevent the elastic snap ring 120 and the outer shell 160 from loosening. At this time, the retaining ring 163 of the outer shell 160 can press the conical pad 140 and the elastic gear ring 150 tightly. After the outer shell 160 is installed, the conical buckle 172 of the pressing sleeve 170 is inserted into the annular inner hole 161 of the outer shell 160, and the convex ring 164 of the outer shell 160 is clamped in the sliding groove 173 of the pressing sleeve 170, the conical buckle 172 is against the elastic gear ring 150, and the pressure ring 171 is located at the inner and lower side of the outer shell 160.

[0041] When installing the pipe 200, first insert the round tube 181 of the inner support 180 into the end of the pipe 200, then insert the end of the pipe 200 into the socket 112 of the pipe body 111. Then rotate the pipe 200 until the first and second protruding teeth 115 and 185 engage and vibrate or make a sound, which proves that the pipe 200 is properly inserted. If there is no vibration or sound, it proves that the pipe 200 is not properly inserted. When removing the pipe 200, squeeze the pressure ring 171 to move it toward the elastic ring gear 150. When the tapered buckle 172 pushes open the teeth 151 of the elastic inner ring gear, the pipe 200 can be removed.

[0042] In addition, the present invention further provides a pipeline, which includes at least two pipes 200 and the above-mentioned quick-connect pipe fitting 100 , and at least two adjacent pipes 200 are connected by the quick-connect pipe fitting 100 .

[0043] In summary, the embodiment of the present invention provides a quick-connect pipe fitting 100, which inserts the pipe 200 through the socket 112 provided on the pipe body 111, the sealing ring 130 can achieve a sealed connection between the pipe body 111 and the pipe 200, preventing leakage of the fluid in the pipe 200, the elastic gear ring 150 can clamp and fix the pipe 200, and the outer shell 160 is provided to achieve a detachable connection to the pipe body 111 and fix the sealing ring 130, the conical gasket 140 and the elastic gear ring 150, and the setting of the pressing sleeve 170 can squeeze the elastic gear ring 150 under the action of an external force, so that the locking teeth 151 on the elastic gear ring 150 are loosened, thereby achieving the removal of the pipe 200. Therefore, the quick-connect pipe fitting 100 provided by the present application can quickly achieve the installation and removal of the pipe 200, and its overall structure is simple, the production cost is low, the production and assembly efficiency is high, and it is conducive to promotion. In addition, the pipeline of the embodiment of the present invention is easy to install and disassemble, which greatly improves the construction efficiency.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A quick-connect pipe fitting, characterized in that: The invention comprises a pipe fitting body, a sealing ring, a conical gasket, an elastic gear ring, an outer shell and a pressing sleeve. At least one end of the pipe fitting body is provided with an annular pipe body, a socket for inserting the pipe is provided in the pipe body, a stepped hole is provided at the opening of the socket, an annular inner hole is provided at one end of the outer shell, a connection portion for detachable connection with the pipe body is provided at the position of the annular inner hole close to the port; a retaining ring is provided at the position of the annular inner hole away from the port, a convex ring is provided on the inner ring of the retaining ring, and the sealing ring is provided In the stepped hole, the conical washer and the elastic gear ring are sequentially installed between the sealing ring and the retaining ring, the elastic gear ring is provided with a clamping tooth for clamping the pipe, and a pressure ring and a tapered buckle are respectively provided at both ends of the pressing sleeve, a sliding groove is formed between the pressure ring and the tapered buckle, the tapered buckle is inserted into the annular inner hole and the convex ring is clamped in the sliding groove, the sliding groove is slidable relative to the convex ring, and the tapered buckle is used to abut against the elastic gear ring and selectively push open the clamping tooth; The tube body and the connecting portion are detachably connected via an elastic snap ring; an annular outer groove is provided on the outer circle of the tube body, the elastic snap ring is disposed in the annular outer groove, and the elastic snap ring is clamped or threadedly connected to the connecting portion. When the elastic snap ring is engaged with the connecting portion, the connecting portion is an annular inner groove, and the elastic snap ring is clamped in the annular inner groove; When the elastic clamp is threadedly connected to the connecting portion, the outer cylindrical surface of the elastic clamp is provided with an external thread, and the inner wall of the annular inner hole is provided with an internal thread matching the external thread; The elastic snap ring is provided with a stop buckle, and the outer shell is provided with a plurality of buckle grooves matching with the stop buckle at the port close to the connecting part; an elastic annular filler is provided between the elastic snap ring and the annular outer groove.

2. The quick-connect pipe fitting according to claim 1, characterized in that: An annular flange is provided at one end of the elastic snap ring away from the outer shell, the end face of the outer shell abuts against the end face of the annular flange, and the shape of the annular flange is polygonal.

3. The quick-connect pipe fitting according to claim 1, characterized in that: The quick-connect pipe fitting also includes an inner support member, one end of which is provided with a round pipe member that can be inserted into the pipe, and the end of the inner support member away from the round pipe member is also provided with a plug for judging the connection status, the end of the socket away from its opening is provided with first convex teeth uniformly distributed in the circumferential direction, and the plug is provided with second convex teeth, and the first convex teeth and the second convex teeth are meshed.

4. The quick-connect pipe fitting according to claim 3, characterized in that: A ridge is provided between the insert and the round tube, and the outer diameter of the ridge is greater than the inner diameter of the tube.

5. The quick-connect pipe fitting according to claim 3, characterized in that: The threaded end of the elastic snap ring, the tapered buckle and the inserting piece are all provided with notches for easy insertion.

6. The quick-connect pipe fitting according to claim 1, characterized in that: The pipe fitting body includes a straight pipe, an elbow pipe or a tee pipe.

7. A pipeline, characterized in that: The quick-connect pipe comprises at least two pipes and the quick-connect pipe fitting according to any one of claims 1 to 6, wherein at least two adjacent pipes are connected via the quick-connect pipe fitting.

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