A splicing type pipe connection fitting

Abstract

The present application provides a splicing type pipe connection fitting, which relates to the field of pipe connection technology, and includes: a connection monomer, a first connection structure and a second connection structure; a plurality of connection monomers are connected end to end in a specified direction to form an enclosed structure; each connection monomer is provided with a first connection structure and a second connection structure; any two adjacent connection monomers are connected by the first connection structure and the second connection structure respectively located on the two connection monomers to achieve a detachable connection to maintain the shape of the enclosed structure and to achieve a circumferential seal of the enclosed structure; the inner wall of the enclosed structure is used to seal and fit with the outer wall of the pipe, or the outer wall of the enclosed structure is used to seal and fit with the inner wall of the pipe. The present application splices a plurality of connection monomers to form an enclosed structure that serves as a connection, and the production difficulty of a single connection monomer is lower, the investment cost of production equipment is lower, and the small size of a single connection monomer makes transportation more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe connection, in particular to a spliced ​​pipe connection fitting. Background Art

[0002] Connecting large-diameter plastic pipes has always been a challenge in the industry. Traditionally, they have been connected using one-piece molded fittings, but these fittings have the following technical issues:

[0003] 1. Plastic accessories: The one-time molding process is difficult and requires large-scale molding equipment, and the one-time investment cost of production is high.

[0004] 2. Concrete accessories: Although concrete accessories have high strength and durability, they have obvious disadvantages, such as heavy weight, inconvenient transportation and installation, and high cost. Summary of the Invention

[0005] In view of the above situation, the present invention provides a spliced ​​pipe connection fitting, aiming to solve the technical problems of the existing XX.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a splicing type pipe connection fitting, comprising a connection unit, a first connection structure and a second connection structure;

[0008] A plurality of connecting monomers are connected end to end along a specified direction to form an enclosed structure;

[0009] Each connecting monomer is provided with a first connecting structure and a second connecting structure;

[0010] in:

[0011] Any two adjacent connection units are connected in a detachable manner by means of a first connection structure and a second connection structure respectively located on the two connection units, so as to maintain the shape of the enclosed structure and achieve circumferential sealing of the enclosed structure;

[0012] The inner wall of the enclosing structure is used to seal and fit with the outer wall of the pipe, or the outer wall of the enclosing structure is used to seal and fit with the inner wall of the pipe.

[0013] In some embodiments of the present invention, the first connection structure includes a tenon protruding from an edge of the connection unit, the tenon extending along a circumferential contour of the connection unit and narrowing along a thickness direction of the connection unit;

[0014] The second connecting structure includes a mortise recessed in the edge of the connecting monomer;

[0015] Among them, the convex tenon and the concave mortise are engaged with each other.

[0016] In some embodiments of the present invention, the enclosed structure is in the shape of a ring.

[0017] In some embodiments of the present invention, a sealing member detachably connected to the inner side of the enclosed structure is further included.

[0018] In some embodiments of the present invention, a limiting member is further included. The limiting member and the sealing member are located on the same side of the connecting unit and protrude from the connecting unit.

[0019] In some embodiments of the present invention, a reinforcement piece detachably connected to the outer side of the enclosed structure is further included, and the reinforcement piece is used to enhance the stability of the enclosed structure along its own circumferential, radial and / or axial shape.

[0020] In some embodiments of the present invention, the reinforcement piece is in the shape of an integral ring, and the axial length of the reinforcement piece is smaller than the axial length of the enclosing structure.

[0021] In some embodiments of the present invention, a first hard block and a second hard block are embedded in the outer wall of the seal, the first hard block and the second hard block are respectively close to two ends of the seal; a plurality of the first hard blocks and the second hard blocks are spaced apart along the circumference of the seal; a first arcuate groove is formed in the first hard block, and a second arcuate groove is formed in the second hard block, and the first arcuate groove and the second arcuate groove extend in opposite directions; and further comprising:

[0022] A first slider and a second slider are slidably connected in the mounting groove. The first slider and the second slider are inclined on their sides close to each other, and an adjustable gap is formed therebetween. The width of the adjustable gap gradually decreases, and the adjustable gap has a wide end and a narrow end. The first slider is connected to a first telescopic rod, and one end of the first telescopic rod is slidably connected to the first arcuate groove. The second slider is connected to a second telescopic rod, and one end of the second telescopic rod is slidably connected to the second arcuate groove.

[0023] A push rod, one end of which is movably disposed in an adjustable gap between the first slider and the second slider, and the other end of which slides through the bottom wall of the mounting slot and can be pressed by the reinforcement member to move toward the narrow end;

[0024] The push piece has one end connected to the push rod and the other end in sliding contact with the inclined side of the first slider or the second slider.

[0025] In some embodiments of the present invention, a third telescopic rod is further included, one end of the third telescopic rod is connected to the first telescopic rod, and the other end of the third telescopic rod is connected to the second telescopic rod.

[0026] In some embodiments of the present invention, further comprising:

[0027] A connecting plate is provided on the third telescopic rod, and the push rod is plugged into the connecting plate;

[0028] The sleeve is fixed on the push rod, and the push piece is arranged on the outer wall of the sleeve;

[0029] An elastic sheet has one end connected to the sleeve and the other end connected to the connecting plate.

[0030] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0031] Compared to the integrally molded plastic or concrete fittings mentioned in the background art, this application splices multiple connecting units to form a connecting, enclosing structure. This makes individual connecting units easier to produce, reduces the investment cost of production equipment, and is smaller and easier to transport. Users can easily assemble the spliced ​​pipe connection fittings, connect two pipes together, and prevent circumferential and axial leakage.

[0032] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for 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 creative work.

[0034] Figure 1 A schematic structural diagram of the spliced ​​pipe connection fitting provided in Example 1;

[0035] Figure 2 for Figure 1 Schematic diagram of the decomposition;

[0036] Figure 3 A schematic structural diagram of the spliced ​​pipe connection fitting provided in Example 2;

[0037] Figure 4 for Figure 3 Schematic diagram of the decomposition;

[0038] Figure 5 This is a structural diagram of the spliced ​​pipe connection fitting when the sealing member and the limiting member are located outside the enclosed structure in Example 3;

[0039] Figure 6 for Figure 5 Schematic diagram of the decomposition;

[0040] Figure 7 This is a schematic structural diagram of a schematic structural diagram of a spliced ​​pipe connection fitting when the reinforcement member is located on the inner side of the enclosed structure in Example 3;

[0041] Figure 8 for Figure 7 Schematic diagram of the decomposition;

[0042] Figure 9 A schematic diagram of the structure of the tenon and mortise provided in Example 4;

[0043] Figure 10 A schematic diagram of the structure of the tenon and mortise provided in Example 5;

[0044] Figure 11 A schematic diagram of the structure of the spliced ​​pipe connection fittings and pipes provided in Example 6;

[0045] Figure 12 A schematic structural diagram of a spliced ​​pipe connection fitting provided in Example 6;

[0046] Figure 13 This is a partial enlarged view of position A in Example 12;

[0047] Figure 14 for Figure 13 Schematic diagram of the structure of the middle push rod, the third telescopic rod, the connecting plate, the sleeve and the elastic sheet;

[0048] Figure 15 This is a schematic structural diagram of the first arc-shaped groove and the second arc-shaped groove provided in Example 6.

[0049] icon:

[0050] 1-connecting unit, 2-tenon, 3-mortise,

[0051] 4-enclosed structure, 41-first slider, 42-second slider, 431-wide end, 432-narrow end, 44-first telescopic rod, 45-second telescopic rod, 46-push rod, 47-push sheet, 48-third telescopic rod, 491-connecting plate, 492-sleeve, 493-elastic sheet,

[0052] 5-seal, 51-first hard block, 511-first arc groove, 52-second hard block, 521-second arc groove,

[0053] 6-reinforcement member, 7-limiting member, 8-protrusion. DETAILED DESCRIPTION

[0054] In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0055] In the description of the embodiments of the present invention, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0056] In addition, the term "plurality" means two or more than two, unless otherwise clearly defined.

[0057] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0058] The embodiments of the present invention are described in detail below.

[0059] Example 1

[0060] See also Figure 1~Figure 2 This embodiment provides a spliced ​​pipe connection fitting for connecting two pipes (not shown in the figure), which is particularly suitable for connecting large-diameter pipes of plastic products; the spliced ​​pipe connection fitting includes a connection unit 1, a first connection structure and a second connection structure.

[0061] There are multiple connecting monomers 1, which are connected end to end along a specified direction to form an enclosing structure 4. The inner wall of the enclosing structure 4 is used to seal and fit with the outer wall of the pipe.

[0062] Each connecting unit 1 is provided with a first connecting structure and a second connecting structure. Any two adjacent connecting units 1 are detachably connected via the first connecting structure and the second connecting structure respectively located on the two connecting units 1 to maintain the shape of the enclosed structure 4 and achieve circumferential sealing of the enclosed structure 4.

[0063] During use, a plurality of connection monomers 1 are formed into an enclosing structure 4, and the shape of the enclosing structure 4 is maintained and the circumferential sealing of the enclosing structure 4 is achieved by cooperating with the first connection structure and the second connection structure, thereby conveniently completing the assembly of the splicing pipe connection fitting itself; subsequently, the two pipes are respectively inserted into the two ends of the enclosing structure 4, so that the outer walls of each pipe are sealed and fit with the inner wall of the enclosing structure 4, thereby achieving the purpose of connecting the two pipes through the splicing pipe connection fitting and achieving circumferential and axial leakage prevention.

[0064] The above method involves first assembling the splicing pipe connector and then connecting the two pipes. In other implementation scenarios, the two pipes can also be aligned and separated first, and then the splicing pipe connector is assembled at the joint of the two pipes. Splicing pipe connectors offer flexible usage.

[0065] The connecting monomer 1, the first connecting structure and / or the second connecting structure are made of plastic material, such as modified materials such as polyvinyl chloride, polypropylene, etc., preferably polyvinyl chloride.

[0066] It should be noted that in order for the inner wall of the enclosing structure 4 to be able to seal against the outer wall of the pipe, the shape of the enclosing structure 4 should match the cross-sectional shape of the pipe. For example, the enclosing structure 4 may be a circular ring (or a polygon with three or more sides). The sealing between the outer wall of the pipe and the inner wall of the enclosing structure 4 is preferably an interference fit to ensure leak-proofing.

[0067] In a specific implementation scenario, the first connection structure includes a tenon 2 protruding from the edge of the connecting unit 1. The tenon 2 naturally extends along the circumferential contour of the connecting unit 1 and gradually narrows along the thickness direction of the connecting unit 1, thereby forming inclined surfaces on opposite sides of the tenon 2. The second connection structure includes a mortise 3 recessed into the edge of the connecting unit 1. The mortise 3 naturally extends along the circumferential contour of the connecting unit 1 and gradually narrows along the thickness direction of the connecting unit 1, thereby forming inclined surfaces on opposite sides of the mortise 3. The tenon 2 and the mortise 3 engage with each other.

[0068] The engagement of the tenon 2 and the mortise 3 creates an interference fit between the inclined surfaces of the tenon 2 and the mortise 3. This not only limits the movement of the two adjacent connecting units 1 to maintain the shape of the enclosed structure 4, but also seals the connection between the two adjacent connecting units 1, thereby conveniently achieving a circumferential seal of the enclosed structure 4. Of course, a sealing gasket may also be provided between the matching inclined surfaces of the tenon 2 and the mortise 3 to enhance the sealing performance.

[0069] As can be seen from the above, compared to the integrally molded plastic or concrete fittings mentioned in the background art, this embodiment splices multiple connecting units 1 to form a connecting enclosing structure 4. The production difficulty of a single connecting unit 1 is lower, the investment cost of production equipment is lower, and the small size of a single connecting unit 1 makes it easier to transport. Users can easily assemble the spliced ​​pipe connection fitting, connect two pipes with it, and prevent circumferential and axial leakage.

[0070] In addition, when designing, the inventor fully considered how to use the tool to connect the two pipes, how to reduce the manufacturing cost of the tool, and how to ensure the convenience of using the tool. However, these requirements are often conflicting with each other; the inventor obtained the above solution based on these considerations.

[0071] Example 2

[0072] See also Figures 1 to 4 , different from Example 1, this embodiment further includes a sealing member 5, a reinforcing member 6 and a limiting member 7.

[0073] The seal 5 is annular and detachably connected to the inner side of the enclosing structure 4. There are multiple seals 5, spaced apart along the axial direction of the enclosing structure 4, with at least one seal 5 at each end. This ensures that after two pipes are inserted into the enclosing structure 4, axial leakage is prevented at both ends. Specifically, the enclosing structure 4 has an installation groove on its inner side, into which the seal 5 engages.

[0074] The reinforcement 6 is detachably connected to the enclosed structure 4 and is used to enhance the stability of the enclosed structure 4 along its own circumferential, radial and / or axial shape, that is, to enhance the structural strength of the enclosed structure 4. There is at least one (two) reinforcements 6.

[0075] In a specific implementation scenario, the reinforcement 6 is an integrally formed circular ring, the enclosing structure 4 is a circular ring, the inner side of the reinforcement 6 is interference fit with the outer side of the enclosing structure 4, and the axial length of the reinforcement 6 is smaller than the axial length of the enclosing structure 4, so that the enclosing structure 4 can be reinforced by the reinforcement 6 while making the volume of the reinforcement 6 smaller.

[0076] The stopper 7 and the sealing member 5 are located on the same side of the connecting unit 1. The stopper 7 protrudes from the connecting unit 1 and can block the end of the pipe inserted into the enclosing structure 4. By changing the position of the stopper 7 on the connecting unit 1, the depth of the pipe inserted into the enclosing structure 4 can be changed.

[0077] It can be understood that when the sealing members 5 are distributed on both sides of the limiting member 7 , a better axial sealing effect can be achieved for the enclosed structure 4 .

[0078] Example 3

[0079] See also Figures 1 to 8 The difference between this embodiment and embodiment 1 or embodiment 2 is that the outer wall of the enclosing structure 4 is used to fit with the inner wall of the pipe.

[0080] It is understandable that under this connection method, the positions of the seal 5 and the reinforcement 6 should also be adjusted, that is, in this embodiment, the seal 5 and the limit member 7 are located on the outside of the enclosing structure 4, and the reinforcement 6 is located on the inside of the enclosing structure 4.

[0081] It can be seen from Examples 1 to 3 that by adjusting the positions of the seal 5, the limiter 7 and the reinforcement 6 during production, the pipe can be inserted into the enclosing structure 4, or the enclosing structure 4 can be inserted into the pipe when using the corresponding spliced ​​pipe connection accessories.

[0082] Example 4

[0083] The shapes of the tenon 2 and the mortise 3 of this embodiment are different from those of the first embodiment.

[0084] See also Figures 1 to 9 The inclined surface of the tenon 2 is provided with at least one (or two) protrusions 8, and the inclined surface of the mortise 3 is provided with at least one (or two) grooves that engage with the protrusions 8. This increases the contact surface between the first and second connecting structures, and the shape of the contact surface is more complex. The connection path between the first and second connecting structures is longer and more complex, which reduces the possibility of leakage and improves the circumferential sealing performance.

[0085] Example 5

[0086] The number of tenons 2 and mortises 3 in this embodiment is different from that in embodiment 1.

[0087] See also Figures 1 to 10 In this embodiment, multiple (two) tenons 2 are spaced apart on the same connection unit 1. This makes the connection path between the first connection structure and the second connection structure longer and more complex, which reduces the possibility of leakage and improves the circumferential sealing performance.

[0088] It can be seen from Example 1, Example 4, and Example 5 that the shapes and quantities of the tenons 2 and the mortises 3 can be adjusted as needed to meet the user's requirements for different degrees of sealing.

[0089] Example 6

[0090] This embodiment is improved on the basis of embodiment 2 to enhance the axial sealing performance of the enclosing structure 4 .

[0091] See also Figures 11 to 15 ,as well as Figures 1 to 10 A first hard block 51 and a second hard block 52 are embedded in the outer wall of the seal 5. The first hard block 51 and the second hard block 52 are respectively located near the two ends of the annular seal 5. Multiple first hard blocks 51 and second hard blocks 52 are spaced apart along the circumference of the seal 5. A first arcuate groove 511 is formed in the first hard block 51, and a second arcuate groove 521 is formed in the second hard block 52. The first arcuate groove 511 and the second arcuate groove 521 extend in opposite directions.

[0092] This embodiment further includes the following components, which are integrated on the connection unit 1 : a first slider 41 , a second slider 42 , a first hard block 51 , a second hard block 52 , a first telescopic rod 44 , a second telescopic rod 45 , a push rod 46 , and a push piece 47 .

[0093] A first slider 41 and a second slider 42 are slidably connected in the mounting groove on the inner side of the enclosing structure 4; the first slider 41 and the second slider 42 are inclined on the sides close to each other, and an adjustable gap is formed between the two. The width of the adjustable gap gradually decreases, and the adjustable gap has a wide end 431 and a narrow end 432.

[0094] The first sliding block 41 is connected to a first telescopic rod 44 , and one end of the first telescopic rod 44 is slidably connected to the first arc-shaped groove 511 .

[0095] The second sliding block 42 is connected to a second telescopic rod 45 , and one end of the second telescopic rod 45 is slidably connected to the second arc-shaped groove 521 .

[0096] One end of the push rod 46 is movably arranged in the adjustable gap between the first slider 41 and the second slider 42 , and the other end slides through the bottom wall of the installation groove and can be pressed by the reinforcement 6 to move toward the narrow end 432 .

[0097] One end of the push piece 47 is connected to the push rod 46 , and the other end thereof is in sliding contact with the inclined side of the first slider 41 or the second slider 42 .

[0098] During use, after the connecting monomers 1 are assembled into the enclosing structure 4, the sealing member 5 is placed in the installation groove, and one end of the first telescopic rod 44 is inserted into the first arc-shaped groove 511, and one end of the second telescopic rod 45 is inserted into the second arc-shaped groove 521. Then, one end of the pipe is inserted into one end of the enclosing structure 4, and then the reinforcing member 6 is put on the enclosing structure 4. While tightening the enclosing structure 4 through the reinforcing member 6, the reinforcing member 6 can be pushed to press the end of the push rod 46 exposed from the enclosing structure 4, so that the push rod 46 drives the push piece 47 to move from the wide end 431 of the adjustable gap to the narrow end 432. The push piece 47 moves the first slider 41 and the second slider 42 away from each other, and the first slider 41 drives the second slider 42 to move away from each other. When the first telescopic rod 44 moves, the second slider 42 drives the second telescopic rod 45 to move. The first telescopic rod 44 cooperates with the first arcuate groove 511 to apply tension and torsional forces to one end of the seal 5, while the second telescopic rod 45 cooperates with the second arcuate groove 521 to apply opposite tension and torsional forces to the other end of the seal 5. This slightly stretches and twists the seal 5. Since the stretching and twisting of the seal 5 reduce its inner diameter, the contact between the inner wall of the seal 5 and the outer wall of the pipe becomes closer, thereby enhancing the axial sealing performance of the enclosing structure 4 and the firmness of the connection between the pipe and the enclosing structure 4. Furthermore, since the seal 5 is elastic, it tends to return to its original shape after being stretched and twisted. Therefore, it reacts to the reinforcement 6 through the push rod 46, preventing the reinforcement 6 from loosening.

[0099] This embodiment further includes a third telescopic rod 48, one end of which is connected to the first telescopic rod 44 and the other end is connected to the second telescopic rod 45. When the push rod 46 drives the push piece 47 to move from the wide end 431 of the adjustable gap to the narrow end 432, the push rod 46 can also push the third telescopic rod 48 to move, thereby extending the first telescopic rod 44 and the second telescopic rod 45 to prevent the first telescopic rod 44 from disengaging from the first arc groove 511 and the second telescopic rod 45 from disengaging from the second arc groove 521.

[0100] This embodiment further includes a connecting plate 491 , a sleeve 492 and an elastic sheet 493 .

[0101] The connecting plate 491 is disposed on the third telescopic rod 48 , and the push rod 46 is plugged into the connecting plate 491 .

[0102] The sleeve 492 is fixed on the push rod 46 , and the push piece 47 is arranged on the outer wall of the sleeve 492 .

[0103] One end of the elastic piece 493 is connected to the sleeve 492 , and the other end is connected to the connecting plate 491 .

[0104] When the push rod 46 drives the push piece 47 to move from the wide end 431 of the adjustable gap to the narrow end 432, the following process occurs: the third telescopic rod 48 moves with the push rod 46, and the elastic piece 493 basically does not deform. The first telescopic rod 44 and the second telescopic rod 45 extend until the first telescopic rod 44 contacts the bottom of the first arc groove 511 and the second telescopic rod 45 contacts the bottom of the second arc groove 521. The third telescopic rod 48 basically does not move. As the push rod 46 continues to move, the elastic piece 493 deforms to allow the push rod 46 and the push piece 47 to continue to move, thereby further increasing the adjustable gap between the first slider 41 and the second slider 42. The seal 5 can still be stretched to a certain extent, and the inner diameter of the seal 5 is further reduced, thereby ensuring the tightness between the seal 5 and the pipe.

[0105] It should be noted that the above improvements can be made to each connection unit 1 or to a portion thereof. A plurality of the above sealing members 5 can be arranged at intervals on the same side of the limiter 7. This embodiment sacrifices a certain cost in exchange for better sealing.

[0106] Finally, it should be noted that the above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that the present application is susceptible to various modifications and variations. The embodiments and features of the embodiments may be combined arbitrarily without conflict. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A splicing pipe connection fitting for connecting two pipes, characterized in that: comprising a connecting monomer, a first connecting structure and a second connecting structure; A plurality of the connecting monomers are connected end to end along a specified direction to form an enclosed structure; Each of the connection units is provided with the first connection structure and the second connection structure; in: Any two adjacent connection units are detachably connected via the first connection structure and the second connection structure respectively located on the two connection units, so as to maintain the shape of the enclosed structure and achieve circumferential sealing of the enclosed structure; The inner wall of the enclosing structure is used to seal and fit with the outer wall of the pipe, or the outer wall of the enclosing structure is used to seal and fit with the inner wall of the pipe; Also included is a sealing member detachably connected to the inner side of the enclosed structure; Also included is a reinforcing member detachably connected to the outer side of the enclosed structure, the reinforcing member being used to enhance the stability of the enclosed structure along its own circumferential, radial and / or axial shape; A first hard block and a second hard block are embedded in the outer wall of the seal, the first hard block and the second hard block are respectively close to the two ends of the seal; a plurality of first hard blocks and second hard blocks are spaced apart along the circumference of the seal; a first arcuate groove is formed on the first hard block, and a second arcuate groove is formed on the second hard block, and the first arcuate groove and the second arcuate groove extend in opposite directions; and further comprising: A first slider and a second slider are slidably connected in the mounting groove, and the first slider and the second slider are inclined on their sides close to each other, and an adjustable gap is formed therebetween, the width of the adjustable gap gradually decreasing, and the adjustable gap has a wide end and a narrow end; a first telescopic rod is connected to the first slider, and one end of the first telescopic rod is slidably connected to the first arcuate groove; a second telescopic rod is connected to the second slider, and one end of the second telescopic rod is slidably connected to the second arcuate groove; a push rod, one end of which is movably disposed in the adjustable gap between the first slider and the second slider, and the other end of which slides through the bottom wall of the mounting slot and can be pressed by the reinforcement member to move toward the narrow end; A push piece has one end connected to the push rod and the other end in sliding contact with the inclined side of the first slider or the second slider.

2. The spliced ​​pipe connection fitting according to claim 1, characterized in that: The first connection structure includes a tenon protruding from an edge of the connection unit, the tenon extending along a circumferential contour of the connection unit and narrowing along a thickness direction of the connection unit; The second connection structure includes a mortise recessed in the edge of the connection unit; Wherein, the tenon and the mortise are engaged with each other.

3. The spliced ​​pipe connection fitting according to claim 1, characterized in that: The enclosed structure is in the shape of a circular ring.

4. The spliced ​​pipe connection fitting according to claim 1, characterized in that: The invention further comprises a limiting member, wherein the limiting member and the sealing member are located on the same side of the connecting unit and protrude from the connecting unit.

5. The spliced ​​pipe connection fitting according to claim 1, characterized in that: The reinforcement piece is in the shape of an integral ring, and the axial length of the reinforcement piece is smaller than the axial length of the enclosing structure.

6. The spliced ​​pipe connection fitting according to claim 1, characterized in that: It also includes a third telescopic rod, one end of which is connected to the first telescopic rod, and the other end of which is connected to the second telescopic rod.

7. The spliced ​​pipe connection fitting according to claim 6, characterized in that: Also includes: a connecting plate, provided on the third telescopic rod, the push rod being plugged into the connecting plate; A sleeve is fixed on the push rod, and the push piece is arranged on the outer wall of the sleeve; An elastic sheet has one end connected to the sleeve and the other end connected to the connecting plate.

Images