Hoop type connecting pipe fitting and pipeline connecting system

Abstract

The utility model provides a clamp type connecting pipe fitting and a pipeline connecting system, and relates to the technical field of pipeline connection. By arranging the positioning check ring to sleeve the outer surface of the core body part, on one hand, the structure of the core body part can be protected, and the core body part is prevented from being damaged by collision; and on the other hand, the position of the core body part can be accurately positioned, the crimping deviation is prevented, and the connection tightness of the pipeline and the hoop type connecting pipe fitting is ensured. The hoop is sleeved with an annular mounting groove formed by the first annular part, the second annular part and the connecting part of the positioning check ring, the pipeline is contained in a gap between the second annular part and the core body part, and the hoop does not make direct contact with the pipeline. The multiple open grooves in the second annular part enable the second annular part to deform in an inward tightening mode after the second annular part is pressed by the hoop, the pressing force is transmitted to the pipeline, the pipeline and the pipe fitting are pressed, tight connection is achieved, pressing connection in the process is more uniform, and the connection tightness of the pipeline and the hoop type connecting pipe fitting is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, and particularly to a clamp-type connection fitting and a pipeline connection system. Background Art

[0002] Connection fittings are one of the common structures in the field of pipeline connection. There are many types of connection fittings, and appropriate types of connection fittings can be selected according to different pipelines and different usage requirements. Among them, clamp-type connection fittings are widely used in many fields such as fire water systems, air conditioning cold and hot water systems, water supply systems, petrochemical pipeline systems, thermoelectric and military pipeline systems, and sewage treatment pipeline systems due to their advantages such as fast construction speed, good system stability, convenient maintenance, and good sealing performance.

[0003] However, during the installation process of the existing clamp-type connection fittings, since the core part of the fitting body is blocked by structures such as pipelines and clamps installed on its surface, it is difficult to observe whether the position of the clamp crimping corresponds to the core part. If the clamp and the core part do not fully correspond, it will lead to insecure crimping, and there is a risk of detachment or material leakage at the connection between the pipeline and the connection fitting. In addition, directly pressing the clamp against the pipeline makes it difficult to evenly crimp the pipeline and the core part, and there may also be a risk of water leakage during long-term use; at the same time, during the transportation or storage process after the production of the clamp-type connection fittings, the surface of the core part is exposed, which is easy to cause scratches on the surface of the core part and will also affect the final crimping effect.

[0004] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a clamp-type connection fitting and a pipeline connection system, which can protect the core part of the fitting body, make the crimping process of the pipeline and the fitting more uniform, and improve the crimping stability.

[0006] The embodiments of the present utility model are implemented as follows:

[0007] In a first aspect, the present utility model provides a clamp-type connection fitting, including a clamp, a fitting body, and a positioning retaining ring.

[0008] The fitting body includes a convex part and a core part. The convex part is located between two adjacent core parts. A positioning retaining ring is sleeved on the outer surface of each core part at intervals, and the clamp is fixedly matched with the positioning retaining ring.

[0009] One end of each core part close to the convex part is provided with a first positioning groove. The positioning retaining ring includes a first annular part, a second annular part and a connecting part. The first annular part is sleeved on the outer surface of the second annular part at intervals, and one ends of the first annular part and the second annular part are connected by the connecting part, so as to form an annular installation groove between the first annular part, the second annular part and the connecting part, and the clamp is accommodated in the annular installation groove.

[0010] One end of the second annular part far from the connecting part extends out of the first annular part and is fixedly connected with the first positioning groove on the core part; at least two opening grooves extending along the direction of the connecting part are also formed at one end of the second annular part far from the connecting part.

[0011] In an alternative embodiment, a plurality of opening grooves are evenly spaced at one end of the second annular part far from the connecting part.

[0012] In an alternative embodiment, the number of the opening grooves is 4-8.

[0013] In an alternative embodiment, a first positioning protrusion extending in the direction away from the annular installation groove is provided on the end surface of one end of the second annular part far from the connecting part, and the first positioning protrusion is fixedly matched with the first positioning groove.

[0014] In an alternative embodiment, a limiting protrusion is provided on the outer surface of the clamp, and a limiting clamping groove is formed in the first annular part, and the limiting protrusion is fixedly matched with the limiting clamping groove.

[0015] In an alternative embodiment, a first protruding part protruding towards the annular installation groove is provided at one end of the first annular part far from the connecting part, and the first protruding part is configured to fix the clamp.

[0016] In an alternative embodiment, a size adjusting part is provided on the clamp. The size adjusting part includes an adjusting groove and a plurality of adjusting teeth, and the adjusting teeth can be selectively accommodated in the adjusting groove.

[0017] In a second aspect, the present utility model provides a pipeline connection system, which includes a pipeline and a clamp-type connection fitting according to any one of the foregoing embodiments, and the pipeline is accommodated in the interval between the second annular part and the core part.

[0018] The beneficial effects of the embodiments of the present utility model are:

[0019] The present utility model provides a clamp - type connecting pipe fitting and a pipeline connection system. By providing a positioning retaining ring which is sleeved on the outer surface of the core part, on the one hand, it can protect the structure of the core part and avoid the core part from being bruised; on the other hand, it can accurately position the core part, prevent deviation in crimping, and ensure the tight connection between the pipeline and the clamp - type connecting pipe fitting. The positioning retaining ring is composed of a first annular part, a second annular part and a connecting part. The clamp is sleeved in the annular installation groove formed by the first annular part, the second annular part and the connecting part. The pipeline is accommodated in the space between the second annular part and the core part. The clamp does not directly contact the pipeline. The pressing force of the clamp acts on the second annular part. The multiple opening grooves on the second annular part enable the second annular part to deform inwardly after being pressed by the clamp, transmit the pressing force to the pipeline, press the pipeline and the pipe fitting tightly, and achieve a tight connection. This process has more uniform crimping and ensures the tight connection between the pipeline and the clamp - type connecting pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0021] Figure 1 is an exploded view of the structure of the clamp - type connecting pipe fitting provided by the embodiment of the present utility model;

[0022] Figure 2 is a cross - sectional view of the clamp - type connecting pipe fitting provided by the embodiment of the present utility model;

[0023] Figure 3 is a cross - sectional view of the pipe fitting body provided by the embodiment of the present utility model;

[0024] Figure 4 is a cross - sectional view of the positioning retaining ring provided by the embodiment of the present utility model;

[0025] Figure 5 is a structural schematic diagram of the positioning retaining ring provided by the embodiment of the present utility model;

[0026] Figure 6 is a structural schematic diagram of the clamp provided by the embodiment of the present utility model;

[0027] Figure 7 is an exploded view of the structure of the pipeline connection system provided by the embodiment of the present utility model;

[0028] Figure 8 is a cross - sectional view of the pipeline connection system provided by the embodiment of the present utility model.

[0029] Icons: 100 - Clamp - type connection pipe fittings; 110 - Clamp; 111 - Limit protrusion; 112 - Adjustment groove; 113 - Adjustment tooth; 120 - Pipe fitting body; 121 - Protrusion part; 122 - Core part; 123 - First positioning groove; 130 - Positioning retaining ring; 131 - First annular part; 1311 - Limit card slot; 1312 - First protrusion part; 132 - Second annular part; 1321 - Opening slot; 1322 - First positioning protrusion; 133 - Connection part; 134 - Annular installation groove; 140 - Pipe installation groove; 10 - Pipe connection system; 200 - Pipe. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0032] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is normally placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0034] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Please refer to Figure 1 and Figure 2 , this embodiment provides a clamp - type connecting pipe fitting 100, which includes a clamp 110, a pipe fitting body 120, and a positioning retaining ring 130.

[0037] Please refer to Figure 3 , the pipe fitting body 120 includes a convex portion 121 and a core portion 122. The convex portion 121 is located between two adjacent core portions 122. The outer surface of each core portion 122 is provided with a positioning retaining ring 130 at intervals, and the clamp 110 is fixed in cooperation with the positioning retaining ring 130.

[0038] Please refer to Figure 1 , when the pipe fitting body 120 is a straight - section structure, there is one convex portion 121 and two core portions 122, and the two core portions 122 are respectively located at both ends of the convex portion 121 for connecting with the pipeline 200.

[0039] One end of each core portion 122 close to the convex portion 121 is provided with a first positioning groove 123 for limiting the positioning retaining ring 130.

[0040] Please refer to Figure 4 , in this embodiment, the positioning retaining ring 130 includes a first annular portion 131, a second annular portion 132, and a connecting portion 133. The first annular portion 131 is sleeved on the outer surface of the second annular portion 132 at intervals, and one end of the first annular portion 131 and the second annular portion 132 in the same direction is connected by the connecting portion 133, so that an annular installation groove 134 is formed between the first annular portion 131, the second annular portion 132, and the connecting portion 133. The clamp 110 is accommodated in the annular installation groove 134. Therefore, the two surfaces of the clamp 110 are respectively in contact with the surfaces of the first annular portion 131 and the second annular portion 132, and do not directly contact the surface of the pipeline 200, and the force on the pipeline 200 is more uniform.

[0041] Please refer to Figure 2 , one end of the second annular portion 132 away from the connecting portion 133 extends out of the first annular portion 131, which can protect the area where the longer core body portion 122 is located. And since the second annular portion 132 is located within the first annular portion 131, therefore, the interval between the core body portion 122 and the positioning retaining ring 130 should be the interval between the core body portion 122 and the second annular portion 132. This interval is used to accommodate the pipe 200. Therefore, this interval is the pipe installation groove 140. One end of the second annular portion 132 away from the connecting portion 133 extends out of the first annular portion 131, which can have a larger contact area with the surface of the pipe 200 for fixation, facilitating the crimping stability of the clamp - type connecting fitting 100.

[0042] Please refer to Figure 5 , one end of the second annular portion 132 away from the connecting portion 133 is fixedly connected to the first positioning groove 123 on the core body portion 122. In this embodiment, on the end face of one end of the second annular portion 132 away from the connecting portion 133, there is a first positioning protrusion 1322 extending in the direction away from the annular installation groove 134. The first positioning protrusion 1322 cooperates with the first positioning groove 123 for fixation to prevent the positioning retaining ring 130 from separating from the fitting body 120.

[0043] The positioning between the first positioning protrusion 1322 of the positioning retaining ring 130 and the first positioning groove 123 of the core body portion 122 can fixedly sleeved the positioning retaining ring 130 on the surface of the core body portion 122. When the clamp 110 needs to be crimped, it can ensure that the crimping position of the clamp 110 is definitely the core body portion 122, avoiding situations such as insecure crimping and sealing.

[0044] In order to ensure that the positioning retaining ring 130 can apply a stable crimping force to the pipe 200, at least two opening grooves 1321 extending in the direction of the connecting portion 133 are further provided at one end of the second annular portion 132 away from the connecting portion 133. When the clamp 110 contracts inward, the groove width of the opening groove 1321 will decrease, thereby squeezing the pipe 200 towards the core body portion 122 to ensure the tight connection between the pipe 200 and the core body portion 122. In addition, after the positioning retaining ring 130 is installed, the opening groove 1321 is located at one end of the convex portion 121 close to the fitting body 120. Therefore, it can also be judged whether the pipe 200 is installed in place through the opening groove 1321.

[0045] Therefore, in order to ensure a better crimping effect, in this embodiment, a plurality of opening grooves 1321 are evenly spaced at one end of the second annular portion 132 away from the connecting portion 133 to improve the force - receiving uniformity of the pipe 200.

[0046] In this embodiment, the number of the opening grooves 1321 is four, and the included angle between the positions of two adjacent opening grooves 1321 is 90°. In other embodiments, the number of the opening grooves 1321 can also be six or eight.

[0047] Please refer to Figure 5 and Figure 6 , in this embodiment, in order to facilitate the positioning of the clamp 110, a positioning protrusion 111 is arranged on the outer surface of the clamp 110, and a positioning groove 1311 is formed in the first annular portion 131. The positioning protrusion 111 is fixedly engaged with the positioning groove 1311.

[0048] In this embodiment, the positioning groove 1311 is a square structure, which has the same structure and mutually matching size as the positioning protrusion 111 on the surface of the clamp 110.

[0049] The cooperation between the positioning protrusion 111 and the positioning groove 1311 can limit the rotation of the clamp 110 in the circumferential direction within the annular installation groove 134, so as to realize the positioning in the circumferential direction. At the same time, the positioning protrusion 111 of the clamp 110 is also one of the key adjustment structures for realizing the increase and decrease of the inner diameter of the clamp 110. Placing it in the positioning groove 1311 can better operate the crimping process of the clamp 110.

[0050] Please refer to Figure 6 , in this embodiment, a size adjustment portion is arranged on the clamp 110. The size adjustment portion includes an adjustment groove 112 and a plurality of adjustment teeth 113. The adjustment teeth 113 can be selectively received in the adjustment groove 112, and the structure of the clamp 110 can adopt the existing structure of the clamp 110.

[0051] Please refer to Figure 5 , further, in order to prevent the clamp 110 from axially moving along the pipe body 120, in this embodiment, a first protrusion portion 1312 protruding towards the annular installation groove 134 is arranged at one end of the first annular portion 131 away from the connection portion 133. The first protrusion portion 1312 is configured to fix the clamp 110. Therefore, both ends of the clamp 110 along the axial direction of the pipe body 120 are respectively positioned by the first protrusion portion 1312 and the connection portion 133, so that the clamp 110 is stably received in the annular installation groove 134.

[0052] Please refer to Figure 7 and Figure 8 , further, the embodiment of the present utility model also provides a pipeline connection system 10, which includes a pipeline 200 and the above-mentioned clamp connection fitting 100. The pipeline 200 is received in a pipeline installation groove 140 between the second annular portion 132 and the core portion 122.

[0053] The assembly process of the pipeline connection system 10 provided in this embodiment is as follows:

[0054] Please refer to Figure 1 and Figure 2 and Figure 2 , first assemble the clamp - type connecting pipe fitting 100. Slip the positioning retaining ring 130 onto the surface of the core part 122. The first positioning protrusion 1322 of the positioning retaining ring 130 is stuck in the first positioning groove 123 of the core part 122 to ensure the stable connection between the positioning retaining ring 130 and the pipe fitting body 120. There is a gap between the core part 122 and the second annular part 132, and the gap therebetween is the pipe installation groove 140.

[0055] Slip the clamp 110 into the annular installation groove 134 between the first annular part 131 and the second annular part 132 from the end far away from the connecting part 133. The limiting protrusion 111 of the clamp 110 is engaged and fixed with the limiting card slot 1311 of the first annular part 131. The first protrusion part 1312 provided at the end of the first annular part 131 away from the connecting part 133 limits the clamp 110, so that the clamp 110 cannot rotate along the annular direction within the annular installation part, nor can it move axially along the core part 122, ensuring that the position where the clamp 110 applies force exactly corresponds to the core part 122 of the pipe fitting body 120.

[0056] Please refer to Figure 7 and Figure 8 and Figure 8 , insert the pipe 200 into the pipe installation groove 140 between the core part 122 and the second annular part 132. Observe whether the pipe 200 is installed in place through the opening groove 1321. After the pipe 200 is installed in place, the clamp 110 can be operated to apply an inward - tightening pressure to the second annular part 132. Since the second annular part 132 is provided with the opening groove 1321, it can be tightened inward. The pressure applied by the clamp 110 is transformed by the second annular part 132 to apply pressure to the pipe 200 inside the second annular part 132 more evenly, making the connection between the pipe 200 and the core part 122 tighter and the pressing force between the pipe 200 and the core part 122 more uniform.

[0057] The clamp - type connecting pipe fitting 100 is convenient to install, has a two - way positioning function for the clamp 110, has a protection function for the core part 122, and can also make the crimping between the pipe 200 and the core part 122 more uniform.

[0058] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A clamp - type connecting pipe fitting, characterized in that, It includes a clamp, a pipe fitting body and a positioning retaining ring; The pipe fitting body includes a convex part and a core part. The convex part is located between two adjacent core parts. The positioning retaining ring is sleeved on the outer surface of each core part at intervals, and the clamp is fixedly matched with the positioning retaining ring; A first positioning groove is provided at one end of each core part close to the convex part. The positioning retaining ring includes a first annular part, a second annular part and a connecting part. The first annular part is sleeved on the outer surface of the second annular part at intervals, and one ends of the first annular part and the second annular part are connected by the connecting part, so as to form an annular installation groove between the first annular part, the second annular part and the connecting part, and the clamp is accommodated in the annular installation groove; One end of the second annular part far from the connecting part extends out of the first annular part and is fixedly connected with the first positioning groove on the core part; at least two opening grooves extending along the direction of the connecting part are further provided at one end of the second annular part far from the connecting part.

2. The clamp-type connecting pipe fitting according to claim 1, wherein, A plurality of the opening grooves are evenly arranged at one end of the second annular part far from the connecting part at intervals.

3. The clamp-type connecting pipe fitting according to claim 1, wherein The number of the opening grooves is 4 to 8.

4. The clip-type connecting pipe fitting according to claim 2 or 3, characterized in that, A first positioning protrusion extending in the direction away from the annular installation groove is provided on the end face of one end of the second annular part far from the connecting part, and the first positioning protrusion is fixedly matched with the first positioning groove.

5. The clamp-type connecting pipe fitting according to claim 1, characterized in that, A limiting protrusion is provided on the outer surface of the clamp, and a limiting card slot is provided on the first annular part, and the limiting protrusion is fixedly matched with the limiting card slot.

6. The clamp-type connecting pipe fitting according to claim 1 or 5, characterized in that A first protruding part protruding towards the annular installation groove is provided at one end of the first annular part far from the connecting part, and the first protruding part is configured to fix the clamp.

7. The clamp-type connecting pipe fitting according to claim 5, characterized in that, A size adjusting part is provided on the clamp. The size adjusting part includes an adjusting groove and a plurality of adjusting teeth, and the adjusting teeth can be selectively accommodated in the adjusting groove.

8. A pipeline connection system, characterized in that, It includes a pipeline and a clamp-type connecting pipe fitting according to any one of claims 1 to 7, and the pipeline is accommodated in the interval between the second annular part and the core part.

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