PP pipeline quick connecting piece

Abstract

The invention discloses a PP pipeline quick connecting piece, and relates to the field of pipeline connection, the PP pipeline quick connecting piece comprises two connecting sleeves, any connecting sleeve is arranged at the adjacent ends of two pipelines in a sleeving mode, connecting assemblies used for fixing the connecting sleeves and the pipelines are arranged on the connecting sleeves, and fixing assemblies are arranged outside the connecting sleeves. The fixing assembly is used for fixing two connecting assemblies located on different pipelines, and a sealing structure used for sealing the pipeline connecting position is arranged in the connecting sleeve. Through the connecting assembly, fixing of the connecting sleeve and the PP pipeline is achieved; fixing of the two connecting sleeves is achieved through the fixing assemblies, and then fixing of the two PP pipelines is achieved; the sealing of the pipeline joint is realized through the sealing structure; quick connection of the two PP pipelines is achieved, and the effects of stable connection and good sealing performance are achieved.

Description

Technical Field

[0001] The present application relates to the field of pipeline connection, and in particular to a PP pipeline quick connector. Background Art

[0002] PP (polypropylene) pipes, with their excellent corrosion resistance, can withstand the erosion of various chemical media and ensure the long-term stable operation of the pipeline system. Their light weight greatly reduces the manpower and material costs during transportation and installation. At the same time, they are cost-effective. Compared with some metal pipes or pipes made of special materials, they effectively control the overall cost while meeting engineering requirements. These advantages enable them to be widely used in many scenarios such as demister flushing systems.

[0003] Currently, there are three main ways to connect two PP pipes. The first is hot-melt butt welding, which uses a heating device to heat the pipe ends to a molten state and then pressurizes and bonds them together to achieve the connection. Although this method has high connection strength, it relies on heating equipment and is time-consuming. The second is flange connection, which uses bolts to tighten two flanges to complete the connection. It is suitable for large-diameter pipes, but it has the problem of being bulky. The third is a quick-insert connector, which relies on rubber ring sealing and retaining springs for fixing. It is easy to install, but it is prone to leakage. The existing connection methods cannot simultaneously achieve rapid installation of PP pipes, and it is difficult to meet the sealing and pressure requirements under high-pressure conditions. Summary of the Invention

[0004] In order to improve the problem that the existing connection method cannot simultaneously achieve rapid installation of PP pipes and is difficult to meet the sealing and pressure-bearing requirements under high-pressure working conditions, the present application provides a PP pipe quick connector.

[0005] The PP pipe quick connector provided in this application adopts the following technical solution: A PP pipe quick connector includes two connecting sleeves, each of which is sleeved on an adjacent end of two pipes, a connecting sleeve provided with a connecting assembly for fixing the connecting sleeve and the pipe, a fixing assembly provided on the outside of the connecting sleeve, and the fixing assembly used to fix two connecting assemblies located on different pipes, a sealing structure provided inside the connecting sleeve for sealing the pipe connection, and a clamping mechanism provided on the outside of the pipe for strengthening the fixation of the two connecting sleeves.

[0006] By adopting the above technical solution, the connecting sleeve is first placed on the adjacent end of the pipe. The connecting sleeve and the pipe are then fixed using the connecting assembly. The fixing assembly is then used to fix the two connecting assemblies on different pipes, thereby securing the two pipes and making the pipe connection more stable. In addition, the sealing structure is used to seal the pipe connection to prevent leakage of the medium within the pipe. The clamping mechanism is used to further strengthen the fixation of the two connecting sleeves and also further enhance the firmness of the connection between the two pipes, meeting the pressure requirements under high-pressure conditions. The entire connector structure facilitates the rapid installation of PP pipes.

[0007] Optionally, the connecting assembly includes a mounting groove formed on the connecting sleeve, a connecting hole formed on the pipe and used in conjunction with the mounting groove, a gasket provided on the connecting sleeve, and a clamping bolt threadedly connected to the mounting groove, and the tail end of the clamping bolt passes through the gasket, the mounting groove and the connecting hole in sequence, and the clamping bolt is hollow to form a cavity.

[0008] By adopting this technical solution, the clamping bolt passes through the gasket, mounting slot, and connection hole, and is threaded into the mounting slot. This not only secures the gasket to the connecting sleeve, but also firmly secures the connecting sleeve to the pipe. Furthermore, the hollow cavity within the clamping bolt provides space for subsequent installation of other components, facilitating rapid installation and removal of the PP pipe.

[0009] Optionally, the connecting component also includes a protrusion integrally formed on the gasket, the protrusion is fixed to the fixing component by a snap connection, both side surfaces of the protrusion are arranged in an inclined manner, the straight surface width of the protrusion away from the gasket is smaller than the straight surface width of the protrusion contacting the gasket, and the protrusion and the gasket are arranged in a step-like shape.

[0010] By adopting the above technical solution, the protrusion integrally formed on the gasket is clamped and fixed with the fixing component. The inclined surface settings and step-like structure on both sides of the protrusion facilitate accurate clamping with the fixing component, improve the stability of the connection, and prevent the fixing component from accidentally detaching, thereby improving the overall reliability of the PP pipe quick connector.

[0011] Optionally, the connection components are provided in multiple groups, and the multiple groups of connection components are evenly spaced around the circumference of the connecting sleeve.

[0012] By adopting the above technical solution, multiple groups of connecting components are evenly spaced around the circumferential direction of the connecting sleeve, which can improve the connection stability between the connecting sleeve and the pipeline.

[0013] Optionally, the fixing assembly includes a connecting plate, a snap-in groove formed on the connecting plate, and two columns fixed on the connecting plate, wherein the snap-in groove and the protrusion are interference fit to fix the connecting plate on the gasket, and the columns can be inserted into the hollow cavity of the clamping bolt to locate the installation position of the connecting plate.

[0014] By adopting the above technical solution, the two connecting assemblies on different pipes are first aligned, and then the fixing assembly is pressed, forming an interference fit between the snap-fit ​​groove and the protrusion, so that a single connecting plate can secure the two connecting assemblies on different pipes together, thereby securing the two pipes. Two columns can be inserted into the hollow cavities of the two clamping bolts respectively to locate the installation position of the connecting plate, ensuring more accurate installation.

[0015] Optionally, the fixing components are provided in multiple groups, and the multiple groups of fixing components are also evenly spaced around the circumference of the connecting sleeve.

[0016] By adopting the above technical solution, multiple groups of fixing components are evenly spaced around the circumference of the connecting sleeve, which can more firmly fix the two connecting components located on different pipes, thereby achieving more stable fixation of the two pipes.

[0017] Optionally, the sealing structure includes a receiving groove opened on the inner wall of the pipe and a sealing gasket embedded in the receiving groove. The sealing gasket is arranged in a ring shape, the end of the pipe abuts against the sealing gasket, and two groups of the sealing structures are arranged between the two pipes.

[0018] By adopting the above technical solution, when the fixing assembly is used to fix the two connecting sleeves, the two annular sealing gaskets are squeezed, thereby achieving a sealing effect on the connection between the two pipes.

[0019] Optionally, the quick connector is also provided with a clamping mechanism for strengthening the fixation of the two connecting sleeves. The clamping mechanism includes a base assembly fixed on one of the connecting sleeves and a clamping assembly fixed on the other connecting sleeve. When the connecting plate fixes the two connecting assemblies under the action of external force, the base assembly and the clamping assembly move toward each other to form a clamping fit and strengthen the fixation of the two connecting sleeves.

[0020] By adopting the above technical solution, the socket assembly and the snap-fit ​​assembly move toward each other and form a snap-fit ​​fit under the external force of the connecting plate, thereby strengthening the fixation of the two connecting sleeves and further enhancing the firmness of the connection between the two pipes, so that the connection between the two pipes meets the sealing and pressure-bearing requirements under high-pressure working conditions.

[0021] Optionally, the socket assembly includes a first top block fixed on the connecting plate, a first mounting plate fixed on the connecting sleeve, a limit plate sliding on the first mounting plate, and a clamping block fixed on the side of the limit plate away from the first top block. The bottom of the first top block is arranged in an inclined surface, and the first top block abuts and drives the limit plate to move on the first mounting plate under the action of external force. The cross-section of the clamping block along its height direction is triangular, and the limit plate and the clamping block are fixed vertically to form a clamping area on both sides of the receiving plate that cooperates with the clamping assembly.

[0022] By adopting the above technical solution, when the connecting plate is pressed by external force, the bottom inclined surface of the first top block can drive the limit plate to move on the first mounting plate, and then drive the clamping block to move toward the position of the clamping assembly, so as to facilitate the subsequent clamping fit between the clamping block and the clamping assembly.

[0023] Optionally, the clamping assembly includes a second top block fixed to the connecting plate, a second mounting plate fixed to the connecting sleeve, a mounting bracket sliding on the second mounting plate, two connecting brackets arranged up and down and coaxially hinged on the mounting bracket, two springs respectively used to limit each connecting bracket, and two rollers respectively rotating on each connecting bracket, the two ends of the spring are respectively fixed to the connecting bracket and the mounting bracket, the bottom of the second top block is arranged in an inclined surface and is symmetrically arranged with the second top block, the first top block and the second top block move under the action of external force, driving the limiting plate and the mounting bracket to move toward each other, and driving the connecting bracket to rotate under the rolling abutment of the roller and the clamping plate to form a clamping fit with the clamping plate.

[0024] By adopting the above technical solution, the pressing and fixing assembly can drive the first and second top blocks to move, thereby driving the limit plate and the mounting frame to move toward each other. The rollers and the clamping plate then roll and abut against each other, driving the connecting frame to rotate and form a clamping engagement with the clamping plate, thereby strengthening the fixation of the two connecting sleeves and thereby enhancing the firmness of the connection between the two pipes.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The pipe and the connecting sleeve are fixed by the connecting assembly, and the two connecting assemblies located on different pipes are fixed by the fixing group, thereby realizing the rapid installation and fixation of the two pipes; 2. The sealing structure can effectively seal the pipeline joints, meet the sealing requirements under high-pressure conditions, and avoid leakage of the medium inside the pipeline; 3. The clamping mechanism strengthens the fixation of the two connecting sleeves, further improving the firmness of the connection between the two pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is an overall schematic diagram of the quick connector provided in Example 1 of the present application; Figure 2 This is a disassembled diagram of the quick connector provided in Example 1 of the present application, used to illustrate the connecting component and the fixing component; Figure 3 This is a structural diagram of the connection assembly and sealing structure provided in Example 1 of the present application; Figure 4 This is a schematic structural diagram of the fixing assembly provided in Example 1 of the present application; Figure 5 This is a schematic diagram of the snap-fit ​​mechanism provided in the second embodiment of the present application after it forms a snap-fit ​​fit; Figure 6 It is a structural diagram of the card holder assembly and the card connection assembly provided in the second embodiment of the present application.

[0028] Figure markings: 1. connecting sleeve; 2. connecting assembly; 21. mounting groove; 22. connecting hole; 23. gasket; 24. clamping bolt; 25. protrusion; 3. fixing assembly; 31. connecting plate; 32. clamping groove; 33. column; 4. sealing structure; 41. accommodating groove; 42. sealing rubber gasket; 5. clamping mechanism; 51. base assembly; 511. first top block; 512. first mounting plate; 513. limiting plate; 514. clamping block; 52. clamping assembly; 521. second top block; 522. second mounting plate; 523. mounting frame; 524. connecting frame; 525. spring; 526. roller. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The embodiment of the present application discloses a PP pipe quick connector.

[0031] Example 1: Reference Figure 1 and Figure 2A PP pipe quick connector includes two connecting sleeves 1, a connecting component 2, and a fixing component 3. The two connecting sleeves 1 are respectively sleeved on the adjacent ends of the two PP pipes to be connected. The connecting component 2 is arranged on the connecting sleeve 1, and is used to fix the connecting sleeve 1 and the PP pipe together. In addition, each connecting sleeve 1 is provided with a plurality of groups of connecting components 2, and the plurality of groups of connecting components 2 are evenly distributed around the circumferential direction of the connecting sleeve 1 to improve the connection stability between the connecting sleeve 1 and the PP pipe. The fixing component 3 is arranged outside the connecting sleeve 1, and is used to fix two connecting components 2 located on different pipes, thereby realizing a fixed connection between the two PP pipes. In addition, a plurality of fixing components 3 are provided, and the plurality of fixing components 3 are also evenly distributed around the circumferential direction of the connecting sleeve 1 to ensure that the two PP pipes are subjected to uniform force during the connection process, thereby improving the stability and reliability of the connection.

[0032] Reference Figure 1 and Figure 2 First, securely fasten the two connecting sleeves 1 to the two PP pipes to be connected using the connecting assembly 2. Then, align the connecting assemblies 2 on the two different PP pipes one by one and securely fasten them using a fixing assembly 3, effectively securing the two PP pipes and achieving the goal of quickly installing the two PP pipes.

[0033] In this embodiment, each connecting sleeve 1 is provided with four connecting assemblies 2, and a total of eight connecting assemblies 2 are provided on the two PP pipes. Because a single fixing assembly 3 can secure two connecting assemblies 2 located on different PP pipes, four fixing assemblies 3 are provided in this embodiment. These four fixing assemblies 3 provide a secure connection between the eight connecting assemblies 2, thereby securing the two PP pipes.

[0034] Reference Figure 3 Each connecting sleeve 1 is internally provided with a sealing structure 4, which is used to seal the connection between the two PP pipes and prevent leakage. The combined action of the connecting assembly 2, the fixing assembly 3, and the sealing structure 4 not only enables the rapid connection of the two PP pipes, but also ensures that the connection between the two PP pipes meets the sealing and pressure-bearing requirements under high-pressure conditions.

[0035] Reference Figure 3The sealing structure 4 includes a receiving groove 41 and a sealing gasket 42. The receiving groove 41 is provided on the inner wall of the pipe, and its width and depth are determined by the size of the sealing gasket 42. The sealing gasket 42 is annular and embedded in the receiving groove 41. The sealing gasket 42 is generally made of rubber and has good elasticity. When the fixing assembly 3 is used to fix the two connecting sleeves 1, the two annular sealing gaskets 42 are squeezed, deformed, and fill the gap, thereby achieving the effect of sealing the connection between the two pipes and preventing medium leakage.

[0036] Reference Figure 3 The connecting component 2 includes a mounting groove 21, a connecting hole 22, a gasket 23, and a clamping bolt 24. Among them, the mounting groove 21 is provided on the connecting sleeve 1, and the mounting groove 21 is used to threadably fix the clamping bolt 24. The connecting hole 22 is provided on the pipe and is used in conjunction with the mounting groove 21. The diameter of the connecting hole 22 is adapted to the outer diameter of the clamping bolt 24. The gasket 23 is provided on the connecting sleeve 1, and a rubber layer is provided on the portion where the gasket 23 is in direct contact with the connecting sleeve 1, which plays a buffering role. The clamping bolt 24 is threadedly connected to the mounting groove 21, and its tail end passes through the gasket 23, the mounting groove 21 and the connecting hole 22 in sequence. The clamping bolt 24 is hollow and forms a cavity. The clamping bolt 24 is made of metal to ensure its strength.

[0037] Reference Figure 3 The connecting assembly 2 also includes a protrusion 25 integrally formed on the gasket 23, which is used to form a snap-fit ​​connection with the fixing assembly 3. In this embodiment, the protrusion 25 is provided on both sides of the gasket 23, so each gasket 23 is provided with two symmetrically distributed protrusions 25. Both sides of the protrusion 25 are inclined, and the width of the straight surface of the protrusion 25 away from the gasket 23 is smaller than the width of the straight surface of the protrusion 25 contacting the gasket 23. The protrusion 25 and the gasket 23 are arranged in a stepped manner. This special shape of the protrusion 25 facilitates the snap-fit ​​connection with the fixing assembly 3 and enhances the stability of the snap-fit ​​connection.

[0038] When using the connection assembly 2 to securely connect the connecting sleeve 1 and the PP pipe, first place the gasket 23 on the connecting sleeve 1, with the protrusion 25 facing outward. Then, slide the connecting sleeve 1 over the pipe, aligning the mounting groove 21 with the connecting hole 22. Next, insert the end of the clamping bolt 24 through the gasket 23, mounting groove 21, and connecting hole 22, and tighten the clamping bolt 24 into the mounting groove 21. At this point, the gasket 23 reduces the pressure exerted by the clamping bolt 24 on the outer wall of the connecting sleeve 1, while the protrusion 25 prepares for subsequent engagement with the fixing assembly 3.

[0039] Reference Figure 4The fixing assembly 3 includes a connecting plate 31, a snap-fitting groove 32 and two columns 33. Among them, the connecting plate 31 is usually a metal plate with a certain strength and rigidity. The snap-fitting groove 32 is provided on the connecting plate 31 and forms a snap-fitting fit with the protrusion 25. The number of the snap-fitting grooves 32 is consistent with the number of the protrusions 25. In this embodiment, one connecting plate 31 is provided with four snap-fitting grooves 32 that form a snap-fitting fit with the protrusion 25. The snap-fitting groove 32 is a rectangular groove. The snap-fitting groove 32 is consistent with the straight surface size of the protrusion 25 away from the connecting sleeve 1, and the snap-fitting groove 32 and the protrusion 25 can achieve an interference fit. Under the action of external force, once the snap-fitting groove 32 is inserted into the protrusion 25, the protrusion 25 will clamp the connecting plate 31 on the connecting assembly 2, thereby firmly fixing the two PP pipes, greatly increasing the pressure resistance of the two PP pipes. In addition, two columns 33 are fixed on the connecting plate 31 and can be inserted into the hollow cavity of the clamping bolt 24 to locate the installation position of the connecting plate 31. The outer wall size of the column 33 is adapted to the cavity size of the clamping bolt 24.

[0040] Reference Figure 3 and Figure 4 Before using the fixing assembly 3 to secure the two PP pipes, it is necessary to first align the connection assemblies 2 on the two different PP pipes. Then, align the engaging grooves 32 on the connecting plate 31 with the protrusions 25 on the gasket 23 and press the connecting plate 31 toward the center of the connecting sleeve 1, so that the cylinder 33 enters the cavity of the clamping bolt 24, thus positioning the connecting plate 31. Furthermore, under the action of an external force, the protrusions 25 snap into the engaging grooves 32, forming a locked state, thus securing the two connection assemblies 2 on the different pipes and achieving a quick connection and fixation of the two PP pipes.

[0041] In the first embodiment of the present application, the implementation principle of a PP pipe quick connector is as follows: the pipe and the connecting sleeve 1 are fixed by the connecting component 2. Then, the two connecting components 2 located on different pipes are fixed by pressing the fixing component 3, thereby realizing the rapid installation and fixation of the two pipes. In addition, the sealing structure 4 can effectively seal the pipe connection, meet the sealing requirements under high-pressure working conditions, and avoid leakage of the medium inside the pipe. The present application not only realizes the rapid installation of two PP pipes, but also enables the connection of the two PP pipes to meet the sealing and pressure-bearing requirements under high-pressure working conditions, thereby improving the efficiency and reliability of the pipe connection.

[0042] Example 2: The difference between the second embodiment and the first embodiment is that: Figure 5A clamping mechanism 5 is provided on the exterior of the two pipes. In this embodiment, multiple clamping mechanisms 5 are provided, with the multiple clamping assemblies 52 distributed around the circumference of the connecting sleeve 1. The clamping mechanism 5 serves to strengthen the connection between the two connecting sleeves 1, thereby strengthening the connection between the two PP pipes.

[0043] Reference Figure 6 , the clamping mechanism 5 includes a base assembly 51 and a clamping assembly 52. ​​The base assembly 51 includes a first top block 511, a first mounting plate 512, a limiting plate 513 and a clamping block 514. Among them, the first top block 511 is fixed on the connecting plate 31, and the bottom is set in an inclined surface, and its material is generally metal. The first mounting plate 512 is fixed on the connecting sleeve 1, providing a sliding track for the limiting plate 513. The limiting plate 513 slides on the first mounting plate 512, and a smooth metal plate can be used to reduce sliding friction. The clamping block 514 is fixed on the side of the limiting plate 513 away from the first top block 511, and its cross-section along the height direction is triangular, and the limiting plate 513 and the clamping block 514 are fixed vertically to form a clamping area that cooperates with the clamping assembly 52 on both sides of the receiving plate.

[0044] Reference Figure 6 The clamping assembly 52 includes a second top block 521, a second mounting plate 522, a mounting frame 523, two connecting frames 524, two springs 525, and two rollers 526. The second top block 521 is fixed to the connecting plate 31, with its bottom being inclined and symmetrically arranged with the second top block 521. The second mounting plate 522 is fixed to the connecting sleeve 1, and the mounting frame 523 slides on the second mounting plate 522. The two connecting frames 524 are arranged vertically and coaxially hinged to the mounting frame 523. The ends of the spring 525 are respectively fixed to the connecting frame 524 and the mounting frame 523, and the rollers 526 rotate on each connecting frame 524.

[0045] Reference Figure 5 and Figure 6 When the connecting plate 31 is pressed to fix the fixing assembly 3 to the two connecting assemblies 2, the connecting plate 31 will simultaneously drive the first top block 511 and the second top block 521 to move. The first top block 511 drives the limit plate 513 to move on the first mounting plate 512, and the second top block 521 drives the mounting frame 523 to move on the second mounting plate 522, so that the limit plate 513 and the mounting frame 523 move toward each other, thereby causing the roller 526 to come into contact with the clamping plate, and under the action of the spring 525, the roller 526 is in close contact with the surface of the clamping block 514. When the roller 526 rolls against the clamping plate, the connecting frame 524 is driven to rotate to form a clamping fit with the clamping plate. The clamping mechanism 5 can not only strengthen the fixation of the two connecting sleeves 1, but also enhance the stability of the connection between the two PP pipes.

[0046] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A PP pipe quick connector, characterized by: The invention comprises two connecting sleeves (1), wherein any one of the connecting sleeves (1) is sleeved on adjacent ends of two pipes, and a connecting assembly (2) for fixing the connecting sleeve (1) and the pipe is provided on the connecting sleeve (1), and a fixing assembly (3) is provided on the outside of the connecting sleeve (1), and the fixing assembly (3) is used to fix two connecting assemblies (2) located on different pipes, and a sealing structure (4) for sealing the pipe connection is provided inside the connecting sleeve (1).

2. A PP pipe quick connector according to claim 1, characterized in that: The connecting assembly (2) comprises a mounting groove (21) provided on the connecting sleeve (1), a connecting hole (22) provided on the pipe and used in conjunction with the mounting groove (21), a gasket (23) provided on the connecting sleeve (1), and a clamping bolt (24) threadedly connected to the mounting groove (21), wherein the tail end of the clamping bolt (24) passes through the gasket (23), the mounting groove (21) and the connecting hole (22) in sequence, and the clamping bolt (24) is hollow and forms a cavity.

3. A PP pipe quick connector according to claim 2, characterized in that: The connecting assembly (2) further comprises a protrusion (25) integrally formed on the gasket (23), the protrusion (25) and the fixing assembly (3) being fixed by a snap connection, both side surfaces of the protrusion (25) being arranged in an inclined manner, the width of the straight surface of the protrusion (25) away from the gasket (23) being smaller than the width of the straight surface of the protrusion (25) contacting the gasket (23), and the protrusion (25) and the gasket (23) being arranged in a step-like manner.

4. The PP pipe quick connector according to claim 1, characterized in that: The connecting components (2) are provided in multiple groups, and the multiple groups of connecting components (2) are evenly spaced around the circumference of the connecting sleeve (1).

5. The PP pipe quick connector according to claim 3, characterized in that: The fixing assembly (3) comprises a connecting plate (31), a clamping groove (32) provided on the connecting plate (31), and two columns (33) fixed on the connecting plate (31); the clamping groove (32) and the protrusion (25) are interference-fitted to fix the connecting plate (31) on the gasket (23); and the columns (33) can be inserted into the hollow cavity of the clamping bolt (24) to locate the installation position of the connecting plate (31).

6. The PP pipe quick connector according to claim 1, characterized in that: The fixing components (3) are provided in multiple groups, and the multiple groups of fixing components (3) are also evenly spaced around the circumference of the connecting sleeve (1).

7. The PP pipe quick connector according to claim 1, characterized in that: The sealing structure (4) comprises a receiving groove (41) provided on the inner wall of the pipe and a sealing rubber pad (42) embedded in the receiving groove (41); the sealing rubber pad (42) is arranged in an annular shape; the end of the pipe abuts against the sealing rubber pad (42); and two groups of the sealing structures (4) are arranged between the two pipes.

8. The PP pipe quick connector according to claim 5, characterized in that: The quick connector is also provided with a clamping mechanism (5) for strengthening the fixation of the two connecting sleeves (1). The clamping mechanism (5) comprises a clamping seat assembly (51) fixed on one of the connecting sleeves (1) and a clamping assembly (52) fixed on the other connecting sleeve (1). When the connecting plate (31) is subjected to an external force, it fixes the two connecting assemblies (2) while causing the clamping seat assembly (51) and the clamping assembly (52) to move toward each other to form a clamping fit and strengthen the fixation of the two connecting sleeves (1).

9. The PP pipe quick connector according to claim 8, characterized in that: The card seat assembly (51) comprises a first top block (511) fixed on the connecting plate (31), a first mounting plate (512) fixed on the connecting sleeve (1), a limiting plate (513) sliding on the first mounting plate (512), and a clamping block (514) fixed on a side of the limiting plate (513) away from the first top block (511); the bottom of the first top block (511) is arranged in an inclined surface; the first top block (511) abuts against and drives the limiting plate (513) to move on the first mounting plate (512) under the action of an external force; the cross section of the clamping block (514) along its height direction is triangular; the limiting plate (513) and the clamping block (514) are fixed vertically to form a clamping area on both sides of the receiving plate that cooperates with the clamping assembly (52).

10. The PP pipe quick connector according to claim 9, characterized in that: The clamping assembly (52) comprises a second top block (521) fixed on the connecting plate (31), a second mounting plate (522) fixed on the connecting sleeve (1), a mounting frame (523) sliding on the second mounting plate (522), two connecting frames (524) arranged vertically and coaxially hinged on the mounting frame (523), two springs (525) respectively used to limit the positions of the connecting frames (524), and two rollers (526) respectively rotating on the connecting frames (524). The two ends of the spring (525) are respectively fixed on the connecting frame (524) and the mounting frame (523); the bottom of the second top block (521) is arranged in an inclined surface and is symmetrically arranged with the second top block (521); the first top block (511) and the second top block (521) move under the action of an external force, driving the limiting plate (513) and the mounting frame (523) to move toward each other, and driving the connecting frame (524) to rotate under the rolling contact of the roller (526) and the clamping plate to form a clamping fit with the clamping plate.

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