Multifunctional clamping and pressing type connecting pipe fitting

Abstract

The utility model provides a multifunctional clamping and pressing type connecting pipe fitting, which relates to the technical field of connecting pipe fittings and comprises a pipe fitting body, a blocking piece, a pipe sleeve and a sealing piece. The pipe fitting body comprises a core body section, at least one sealing groove is formed in the outer surface of the core body section, one sealing piece is contained in each sealing groove, the sealing grooves are dovetail grooves, the depth of the sealing grooves is larger than the thickness of the sealing pieces, and the thickness difference between the depth of the sealing grooves and the thickness of the sealing pieces ranges from 0.1 mm to 0.4 mm. The sealing groove is formed in the core body section, and the sealing groove is in a dovetail shape, so that after the sealing piece is contained in the sealing groove, the possibility that the sealing piece can be punched out of an opening in the upper portion of the groove body is reduced, and the sealing effect of the clamping and pressing type connecting pipe fitting is guaranteed. The clamping and pressing type connecting pipe fitting can be suitable for high-power pressure testing equipment and bear larger water yield, the problem that most pain points are prone to being blocked by an existing clamping and pressing type connecting pipe fitting during pressure testing is effectively solved, the water outlet prompting function after pressure leakage connection is safer and more effective, and good product competitiveness is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting pipe fittings, in particular to a multifunctional compression type connecting pipe fitting. Background Art

[0002] In the pipeline industry, commonly used pipe fittings include threaded, quick-connect, flared sliding, flared memory, and compression connections. Among them, compression fittings have the advantages of simple structure, fast installation, and firm connection compared to hot-melt or threaded fittings, and are therefore widely used. However, most compression fittings on the market have a single function and have some disadvantages and safety hazards.

[0003] For example, one of the most critical installation completion indicators of pipe fittings is to confirm whether there is water leakage at the pipe fittings after the installation is completed. Generally speaking, the reason for water leakage at pipe fittings is mostly due to improper installation of the pipe. In order to solve this problem, some compression-type connecting pipes currently use fragile retaining rings to determine whether the pipe is installed in place. The principle is that when the pipe is installed in place, it is crimped by the crimping tool, and the retaining ring breaks and falls out to indicate that it is installed in place. However, the retaining ring after crimping is still on the connecting pipe, and the operator needs to remove the broken pieces one by one, which affects the installation efficiency; in addition, the fragile retaining ring is easy to break during production due to the special nature of the material, and the scrap rate is high. In addition, after the installation of the connecting pipe fittings is completed, it is usually necessary to test whether there are leaks by passing water. During the water passing process, since the power and flow rate of the equipment used in the test are relatively large, it is easy to flush out the sealing ring to block the leaking gap and obtain a qualified result of the leak detection. However, after being put into use, due to changes in factors such as water pressure or flow, the sealing ring may move, causing the previous leaking gap to leak. When the connecting pipe fittings are used in wall pipes or buried pipes, maintenance is difficult.

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

[0005] The utility model aims to provide a multifunctional compression-type connecting pipe fitting, which can improve the accuracy of water leakage detection and ensure the sealing effect of the compression-type connecting pipe fitting.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a multifunctional compression-type connecting pipe fitting, comprising a pipe fitting body, a blocking member, a pipe sleeve and a sealing member.

[0008] The pipe body includes a core section, the outer surface of which is provided with at least one sealing groove, each sealing groove containing a sealing member, the sealing groove being a dovetail groove, and the depth of the sealing groove is greater than the thickness of the sealing member, and the thickness difference between the two is 0.1 to 0.4 mm.

[0009] One end face of the core segment has an opening, and an end of the core segment away from the opening is provided with a mounting segment protruding from the core segment. The blocking member includes a first mounting position, a second mounting position and a blocking member body. The first mounting position is fixedly connected to the mounting segment, the second mounting position is fixedly connected to the pipe sleeve, and the blocking member body and the pipe sleeve are both arranged at corresponding intervals with the core segment.

[0010] In an optional embodiment, the side wall surface of the dovetail groove away from the opening is an inclined surface, and the groove width of the dovetail groove gradually decreases from the bottom of the groove to the groove mouth, the inclination angle of the inclined surface is 10 to 40°, there are 1 to 3 dovetail grooves, and multiple dovetail grooves are arranged at intervals on the surface of the core segment.

[0011] In an optional embodiment, a plurality of ribs are provided on the surface of the core segment, and the ribs include at least one polygonal rib, and the vertices of the polygonal ribs are configured to contact the pipe.

[0012] In an optional embodiment, the polygonal rib has 6 to 12 sides.

[0013] In an optional embodiment, the first installation position of the blocking member protrudes along the inner diameter direction of the blocking member body, and a slot is provided on the installation section, and the first installation position is received in the slot and fixed by snapping.

[0014] A plurality of water leakage observation holes are provided on the blocking member body, and a limiting boss protruding from the first installation position toward the second installation position is provided in the water leakage observation hole in the direction close to the first installation position, and the limiting boss is configured to limit the pipeline.

[0015] In an optional embodiment, at least one axial groove is formed on the outer surface of the core segment along the axial direction of the core, and the depth of the axial groove is less than the protruding height of any rib.

[0016] In an optional embodiment, the installation section is provided with an inclined surface with a successively decreasing diameter in a direction approaching the core section, and the clamping groove is provided at the end of the inclined surface with a larger diameter.

[0017] In an optional embodiment, the second mounting position of the blocking member is an annular structure protruding from the outer surface of the blocking member body, and the inner surface of the second mounting position is provided with an inner mounting groove, and one end of the pipe sleeve is provided with a limiting ring protruding along the outer surface, and the limiting ring is accommodated in the inner mounting groove and fixed by clamping.

[0018] In an optional embodiment, a bell mouth is provided at one end of the pipe sleeve away from the limiting ring, and the bell mouth protrudes from the outer surface of the pipe sleeve.

[0019] The beneficial effects of the embodiments of the utility model are:

[0020] The utility model provides a multifunctional compression-type connecting pipe fitting. By setting a sealing groove in the core section, and the shape of the sealing groove is a dovetail shape, the possibility of the seal being able to rush out of the upper opening of the groove body after being accommodated in the sealing groove is reduced. No matter how the test pressure and flow rate change, the seal is not easy to fall out, so there will be no leakage detection result errors, ensuring the leakage detection accuracy of the connecting pipe fitting and the sealing effect of the compression-type connecting pipe fitting. The compression-type connecting pipe fitting can be used for high-power pressure test equipment and withstand a larger water output. It effectively solves most of the pain points of the existing compression-type connecting pipe fittings that are easy to block during pressure testing. The water output prompt function after the leakage pressure connection is safer and more effective, and also improves the installation and troubleshooting efficiency of hydraulic workers. In addition, the connecting pipe fitting is simple and compact in structure, low in cost, green and environmentally friendly, and has better product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0022] Figure 1 A schematic structural diagram of a multifunctional compression-type connecting pipe fitting provided in an embodiment of the utility model;

[0023] Figure 2 A cross-sectional view of a multifunctional compression-type connecting pipe fitting provided in an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the structure of a pipe body provided in an embodiment of the utility model;

[0025] Figure 4 A cross-sectional view of a pipe body provided in an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of the structure of a blocking member provided in an embodiment of the utility model;

[0027] Figure 6 A cross-sectional view of a blocking member provided in an embodiment of the utility model;

[0028] Figure 7 A schematic diagram of the structure of a pipe sleeve provided in an embodiment of the utility model;

[0029] Figure 8 A cross-sectional view of a pipe sleeve provided in an embodiment of the utility model;

[0030] Fig. 9A schematic diagram of the structure of the installation of a multifunctional compression-type connecting pipe fitting provided by an embodiment of the utility model;

[0031] Fig.10 A schematic structural diagram of the crimping of a multifunctional compression-type connecting pipe fitting provided in an embodiment of the utility model.

[0032] Icons: 100- crimping type connecting pipe fitting; 110- pipe fitting body; 111- core section; 1111- sealing groove; 1112- annular rib; 1113- octagonal rib; 1114- axial groove; 112- mounting section; 1121- slot; 1122- inclined surface; 113- opening; 120- blocking member; 121- first mounting position; 122- second mounting position; 1221- inner mounting groove; 123- blocking member body; 1231- water leakage observation hole; 1232- limiting boss; 130- pipe sleeve; 131- limiting ring; 132- bell mouth; 140- sealing member; 200- pipe; 300- crimping tool. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] 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, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Please refer to Figure 1 and Figure 2 The present embodiment provides a multifunctional compression-type connecting pipe fitting 100 , which includes a pipe fitting body 110 , a blocking member 120 , a pipe sleeve 130 and a sealing member 140 .

[0040] Please refer to Figure 3 and Figure 4 Since the compression fitting 100 is used as a connector for two pipes 200, it can be understood that the fitting body 110 is a through tubular structure, and its two mutually penetrating end faces both have openings 113. Materials from the pipe 200, such as water, can enter the compression fitting 100 from the pipe 200 through the openings 113, and then enter the other pipe 200.

[0041] Furthermore, the pipe body 110 can be divided into a core segment 111 and an installation segment 112. Since the core segment 111 is used to contact the pipe 200, there are two core segments 111, which are respectively located at the two ends of the pipe body 110 having an opening 113. The middle of the two core segments 111 is the installation segment 112. The installation segment 112 is used to limit the blocking member 120, and the pipe 200 is accommodated in the gap between the pipe body 110 and the blocking member 120. Therefore, the installation segment 112 protrudes from the outer surface of the core segment 111.

[0042] Since the compression-type connecting pipe fitting 100 and the pipeline 200 cooperate in the same manner, the structure on one of the core segments 111 is used as an example and description below.

[0043] Please refer to Figure 5 and Figure 6 The blocking member 120 includes a first mounting position 121, a second mounting position 122 and a blocking member body 123. The first mounting position 121 is fixedly connected to the mounting section 112, the second mounting position 122 is fixedly connected to the pipe sleeve 130, and the blocking member body 123 and the pipe sleeve 130 are both spaced apart from the core section 111. The gap between the blocking member 120 and the core section 111 and the gap between the pipe sleeve 130 and the core section 111 are both used to accommodate the pipe 200.

[0044] Please refer to Figure 3 and Figure 4 The outer surface of the core segment 111 is provided with at least one sealing groove 1111 , and each sealing groove 1111 contains a sealing member 140 , so the number of the sealing grooves 1111 and the number of the sealing members 140 are equal.

[0045] After installing the compression-type connection pipe fitting 100, it is necessary to check whether each connection point has been crimped and conduct a water test to check the pipeline system before it can be put into use. In order to avoid the sealing ring from falling out of the sealing groove 1111 due to excessive pressure and flow in the pipe 200 at the leaking crimping point, resulting in a misjudgment of the leakage detection, the sealing groove 1111 is a dovetail groove, and the side wall surface of the dovetail groove away from the opening 113 is an inclined surface 1122, and the groove width of the dovetail groove gradually decreases from the bottom of the groove to the groove opening. The depth of the sealing groove 1111 is greater than the thickness of the sealing member 140, and the thickness difference between the two is 0.1 to 0.4 mm, so that the sealing member 140 is not easy to fall out of the sealing groove 1111.

[0046] It should be further noted that due to the slight difference between the depth of the sealing groove 1111 and the thickness of the sealing member 140, during the installation of the press-fit connecting pipe fitting 100 and the pipe 200, the pipe 200 needs to be inserted into the sealing groove 1111. This can not only prevent the sealing member 140 from falling out of the sealing groove 1111, but also better prevent water leakage.

[0047] In order to ensure that the crimping connection pipe fitting 100 and the pipe 200 can be in close contact under the action of the crimping tool 300, the position of the sealing groove 1111 on the core segment 111 is arranged one-to-one corresponding to the crimping teeth on the crimping tool 300, so as to ensure that the crimping teeth can press the pipe 200 to the sealing groove 1111 and be in close contact with the sealing groove 1111.

[0048] In this embodiment, there are two sealing grooves 1111, and the two sealing grooves 1111 are arranged at intervals on the core segment 111, so that the groove sidewalls of each sealing groove 1111 form an annular convex rib 1112 on the core segment 111. Therefore, one of the core segments 111 in this embodiment has at least four annular convex ribs 1112. The annular convex ribs 1112 can increase the friction between the core segment 111 and the pipe 200, and increase the contact area between the two. After the clamping tool 300 applies pressure, the annular convex rib 1112 can also be clamped into the wall of the pipe 200 to ensure the tight connection between the pipe 200 and the clamping type connection pipe fitting 100.

[0049] In this embodiment, the seal 140 is a sealing ring, which is accommodated in the dovetail groove and limited by the dovetail groove. Specifically, the inclined angle of the inclined surface 1122 of the dovetail groove is 10 to 40 degrees to limit the seal 140.

[0050] In this embodiment, a total of eight convex ribs are provided on the surface of the core segment 111 , and the eight convex ribs are arranged at intervals on the surface of the core segment 111 to increase the contact area between the core segment 111 and the pipe 200 to ensure that the two are tightly installed.

[0051] Furthermore, the eight ribs include seven annular ribs 1112 and one octagonal rib 1113. The design of the annular ribs 1112 can guide the pipe 200 during the insertion process of the pipe 200, and after the pipe 200 is installed, the outer surfaces of the annular ribs 1112 are in contact with the inner wall surface of the pipe 200.

[0052] In addition, since the core segment 111 of this embodiment has two sealing grooves 1111, four of the annular ribs 1112 are used to form the two sealing grooves 1111, and the remaining three annular ribs 1112 are respectively located at the two ends of the two sealing grooves 1111 and on the core segment 111 between the two sealing grooves 1111.

[0053] In this embodiment, the octagonal rib 1113 is located on the core segment 111 between the two sealing grooves 1111; when the pipe 200 is installed, the eight vertices of the octagonal rib 1113 are configured to contact the pipe 200, which can be understood as the inner annular surface of the pipe 200 being the circumscribed circle of the octagonal rib 1113. The design of the octagonal rib 1113 can prevent the pipe 200 from rotating relative to the core segment 111 during use after installation, thereby affecting the sealing effect of the pipe 200.

[0054] In other embodiments, the number of sealing grooves 1111 and the number of convex ribs on the core segment 111 can also be designed as required. The polygonal convex ribs can also be any one of hexagonal convex ribs, decagonal convex ribs or dodecagonal convex ribs.

[0055] Please refer to Figure 5 and Figure 6 In the present embodiment, in order to facilitate the fixation between the blocking member 120 and the pipe body 110, the first mounting position 121 of the blocking member 120 protrudes along the inner diameter direction of the blocking member body 123 to form a limiting platform. The pipe 200 can be limited by this limiting platform. At the same time, the protruding limiting platform formed by the first mounting position 121 is conducive to the fixation of the blocking member 120. It is only necessary to open a slot 1121 on the mounting section 112 of the pipe body 110, and the inwardly protruding first mounting position 121 can be inserted into the slot 1121 and fixed, thereby realizing the fixed connection between the blocking member 120 and the pipe body 110.

[0056] Furthermore, since the first installation position 121 protrudes inward relative to the blocking member body 123 , after the blocking member 120 and the pipe body 110 are installed, the blocking member body 123 and the core segment 111 are spaced apart to accommodate the pipe 200 .

[0057] Furthermore, a plurality of water leakage observation holes 1231 are provided on the blocking member body 123 , and a limiting boss 1232 is provided in the water leakage observation hole 1231 in the direction close to the first installation position 121 and protrudes from the first installation position 121 toward the second installation position 122 , and the limiting boss 1232 is configured to limit the pipeline 200 .

[0058] The water leakage observation hole 1231 is located on the blocking member body 123, and whether the pipeline 200 is installed in place can be directly confirmed through the water leakage observation hole 1231. If the pipeline 200 is installed in place, it should be possible to observe the position of the pipeline 200 from the water leakage observation hole 1231. If the pipeline 200 is not installed in place, the core segment 111 inside it can be directly seen through the water leakage observation hole 1231.

[0059] In addition, a limiting boss 1232 is provided in the direction of the water leakage observation hole 1231 close to the first installation position 121, so that during the installation of the pipe 200, the end face of the pipe 200 can be limited by the limiting boss 1232. Since the limiting boss 1232 protrudes from the direction from the first installation position 121 to the second installation position 122, after the pipe 200 is limited by the limiting boss 1232, the water leakage observation hole 1231 is not completely blocked by the pipe 200, and it also has a gap on both sides of the limiting boss 1232. If during the pressure test, the internal compression joint of the press-fitting pipe fitting 100 is leaking and water leaks, the water can flow out from the gaps on both sides of the limiting boss 1232 of the water leakage observation hole 1231 in time, so as to avoid the internal pressure and flow from causing impact on the structure of the press-fitting pipe fitting 100.

[0060] Please refer to Figure 3 Furthermore, in this embodiment, in order to facilitate the drainage of water leakage, at least one axial groove 1114 is provided on the outer surface of the core segment 111 along the axial direction of the core, and the depth of the axial groove 1114 is less than the protrusion height of any rib. When the pressing tool 300 presses the sleeve 130 inward, the pipe 200 inside the sleeve 130 will fully contact the rib on the core segment 111, blocking the axial groove 1114 to prevent water leakage. However, when the pipe 200 inside the sleeve 130 has a leaky press connection, water will flow along the axial groove 1114 to the water leakage observation hole 1231 and flow out, thereby promptly notifying the operator that the press-fit connection pipe fitting 100 needs to be reinstalled.

[0061] In this embodiment, the installation section 112 is provided with an inclined surface 1122 with a decreasing diameter in a direction close to the core section 111 , and the clamping groove 1121 is provided at the end of the inclined surface 1122 with a larger diameter to facilitate the installation of the pipe 200 .

[0062] Please refer to Figure 7 and Figure 8 In the present embodiment, in order to ensure a tight connection between the blocking member 120 and the sleeve 130, the second mounting position 122 of the blocking member 120 is an annular structure protruding from the outer surface of the blocking member body 123, and the inner surface of the second mounting position 122 is provided with an inner mounting groove 1221, and one end of the sleeve 130 is provided with a limiting ring 131 protruding along the outer surface, and the limiting ring 131 is accommodated in the inner mounting groove 1221 and fixed by clamping.

[0063] In this embodiment, the limiting ring 131 is a protrusion that is turned 90 degrees along the outer surface of the pipe sleeve 130, so that it can be better accommodated in the inner installation groove 1221 for clamping and fixing.

[0064] In this embodiment, a bell mouth 132 is provided at one end of the pipe sleeve 130 away from the limiting ring 131 . The bell mouth 132 protrudes from the outer surface of the pipe sleeve 130 , so as to facilitate the installation and insertion of the pipe 200 .

[0065] The compression-type connecting pipe fitting 100 provided in this embodiment can be designed as a plug, a connecting pipe fitting with two or more ends according to actual needs, and threads that are more tightly connected to the core segment 111 can also be provided on the core segment 111.

[0066] The present embodiment provides a multifunctional compression-type connecting pipe fitting 100, and its installation process and working principle are as follows:

[0067] See also Figure 2 First, the seal 140 is installed in the seal groove 1111, and then the first installation position 121 of the blocking member 120 is inserted into the slot 1121 of the installation section 112 of the pipe body 110, so that the blocking member 120 is fixedly installed with the pipe body 110. Then, the limiting ring 131 of the pipe sleeve 130 is inserted into the inner installation groove 1221 of the second installation position 122 of the blocking member 120, and the pipe sleeve 130 and the blocking member 120 are fixed. After the installation is completed, the pipe sleeve 130 of the press-fitting pipe 100 and the blocking member body 123 and the second installation position 122 of the blocking member 120 are spaced apart from the core segment 111.

[0068] Please refer to Fig. 9 , and then insert the pipe 200 into the core segment 111. Since the side of the pipe sleeve 130 away from the blocking member 120 is a bell mouth 132, it is convenient for the insertion of the pipe 200. During the insertion of the pipe 200, due to the guiding effect of the annular rib 1112, it can be ensured that the pipe 200 is horizontally inserted into the core segment 111 without deflection; the pipe 200 is continuously inserted until the end face of the pipe 200 can be seen in the water leakage observation hole 1231, and the pipe 200 is continued to be inserted until the end face of the pipe 200 contacts the limiting boss 1232 on the water leakage observation hole 1231, and it is considered that the pipe 200 is installed in place.

[0069] Please refer to Fig.10 , and then the pipe 200 and the compression type connection pipe fitting 100 are connected by using the compression tool 300. The compression tool 300 is sleeved on the surface of the pipe sleeve 130, and is limited by the blocking member 120. The compression tool 300 applies an inward force to the pipe sleeve 130, so that the pipe 200 in the pipe sleeve 130 is deformed under the influence of the compression tool 300 force, and the pipe 200 contacts and is tightly connected with the core segment 111. The wall surface of the pipe 200 contacts and squeezes the surface of the sealing member 140 to form a sealed connection, and the connection between the pipe 200 and the compression type connection pipe fitting 100 is completed.

[0070] Perform a water leakage test on the installed pipe 200 and the crimping type connecting pipe fitting 100. Connect the pipe 200 to the test equipment, pass water into the pipe 200, and observe whether there is water flowing out of the water leakage observation hole 1231. If not, it proves that the installation is complete. If there is a water leakage, it means that the pipe 200 has a leak and needs to be crimped again.

[0071] Since the sealing groove 1111 of the compression-type connecting pipe fitting 100 of the embodiment of the utility model is a dovetail groove, the seal 140 will not be flushed up and block the water outlet gap due to changes in pressure and flow of the test equipment, which improves the accuracy of water leakage detection.

[0072] In this embodiment, the pipe body 110 can be made of engineering plastics such as PPSU by injection molding, or can be made by metal processing, and the process and materials are the same as those in the prior art.

[0073] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multifunctional compression type connecting pipe fitting, characterized in that: It includes a pipe body, a blocking member, a pipe sleeve and a sealing member; The pipe body comprises a core segment, the outer surface of the core segment is provided with at least one sealing groove, each of the sealing grooves contains one of the sealing members, the sealing grooves are dovetail grooves, and the depth of the sealing grooves is greater than the thickness of the sealing member, and the difference in thickness between the two is 0.1 to 0.4 mm; One end surface of the core segment has an opening, and an end of the core segment away from the opening is provided with a mounting segment protruding from the core segment, and the blocking member includes a first mounting position, a second mounting position and a blocking member body, the first mounting position is fixedly connected to the mounting segment, the second mounting position is fixedly connected to the pipe sleeve, and the blocking member body and the pipe sleeve are both arranged at corresponding intervals with the core segment.

2. The compression-type connecting pipe fitting according to claim 1, characterized in that: The side wall surface of the dovetail groove away from the opening is an inclined surface, and the groove width of the dovetail groove gradually decreases from the bottom of the groove to the groove mouth. The inclination angle of the inclined surface is 10 to 40 degrees. There are 1 to 3 dovetail grooves, and multiple dovetail grooves are arranged at intervals on the surface of the core segment.

3. The compression-type connecting pipe fitting according to claim 1, characterized in that: A plurality of convex ribs are disposed on the surface of the core segment, wherein the convex ribs include at least one polygonal rib, and the apex of the polygonal rib is configured to contact the pipe.

4. The compression-type connecting pipe fitting according to claim 3, characterized in that: The polygonal convex rib has 6 to 12 sides.

5. The compression-type connecting pipe fitting according to claim 3, characterized in that: The first installation position of the blocking member protrudes along the inner diameter direction of the blocking member body, and a slot is provided on the installation section, and the first installation position is received in the slot and fixed by being clipped; A plurality of water leakage observation holes are provided on the blocking member body, and a limiting boss is provided in the water leakage observation hole in the direction close to the first installation position and protrudes from the first installation position toward the second installation position, and the limiting boss is configured to limit the pipeline.

6. The compression-type connecting pipe fitting according to claim 5, characterized in that: The outer surface of the core segment is provided with at least one axial groove along the axial direction of the core, and the depth of the axial groove is less than the protruding height of any one of the ribs.

7. The compression-type connecting pipe fitting according to claim 5, characterized in that: The mounting section is provided with an inclined surface with a successively decreasing diameter along a direction close to the opening of the core section, and the clamping groove is provided at the end of the inclined surface with a larger diameter.

8. The compression-type connecting pipe fitting according to claim 1, characterized in that: The second mounting position of the blocking member is an annular structure protruding from the outer surface of the blocking member body, and the inner surface of the second mounting position is provided with an inner mounting groove, and one end of the sleeve is provided with a limiting ring protruding along the outer surface, and the limiting ring is accommodated in the inner mounting groove and fixed by clamping.

9. The compression-type connecting pipe fitting according to claim 8, characterized in that: A bell mouth is arranged at one end of the pipe sleeve away from the limiting ring, and the bell mouth protrudes from the outer surface of the pipe sleeve.

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