Connecting device for building water supply and drainage pipeline

Abstract

The invention relates to the technical field of pipe fitting connecting equipment, in particular to a connecting device for building water supply and drainage pipelines. In the prior art, the materials of the rubber plug pipe and the rubber sleeve cause unstable connection between the two pipes and insufficient connection, and the rubber plug pipe and the rubber sleeve are easy to deform and expand at high temperature, so that the initial pressure can cause irreversible damage to the rubber plug pipe and the rubber sleeve, and the subsequent use effect is influenced. A connecting device for building water supply and drainage pipelines comprises a pipe A and a pipe B, and the connecting assembly is arranged on the pipe A and the pipe B. The pipe A is connected with the pipe B through the matching of the rubber plug pipe and the rubber sleeve; the transmission shaft rotates to enable the bolt to be connected with the pipe seat I, and the pipe A and the pipe B are transversely locked; the two first pressing plates and the two second pressing plates extrude the inner side of the rubber plug pipe at the same time, so that the outer side of the rubber plug pipe makes full contact with the inner side of the rubber sleeve, connection of the pipe A and the pipe B is more compact, and the connection effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of pipe connection equipment, and in particular to a connection device for building water supply and drainage pipelines. Background Art

[0002] The connection of building water supply and drainage pipes is a vital part of construction projects. To ensure the smoothness, safety and durability of the pipe system, there are many ways to connect the pipes, such as flanges, threads, welding, clamps and expansion sockets, etc. Among them, the expansion socket method is more secure and sealed. The traditional expansion socket method uses a rubber sleeve and a rubber plug tube to match the ends of the two pipes. After the connection, the staff usually uses bolts and other fasteners to transversely lock the two pipes to achieve a secondary connection effect, which significantly enhances the connection effect.

[0003] Due to the material of the rubber stopper tube and the rubber sleeve, the connection between the two tubes is not stable. The current connecting device is not convenient for squeezing the inner wall of the rubber stopper tube when connecting the two tubes, resulting in the rubber stopper tube and the rubber sleeve The contact is not tight enough, which leads to insufficient and thorough connection. In addition, the rubber stopper tube and the rubber sleeve are prone to deformation and expansion when the temperature rises without pressure. The existing connecting device is not convenient for releasing the initial pressure state of the rubber stopper tube at high temperature, resulting in irreversible damage to the rubber stopper tube and the rubber sleeve, affecting the subsequent use effect, and the durability is low, which leads to poor connection effect. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a connecting device for building water supply and drainage pipes, which can apply pressure to the inner wall of the rubber sleeve during connection to make the connection between the two pipes more complete and thorough, and can release the pressure on the rubber plug pipe in a high temperature environment to avoid damage and improve durability, thereby comprehensively enhancing the connection effect.

[0005] The technical implementation scheme of the present invention is: a connecting device for building water supply and drainage pipes, comprising: A tube and B tube; A connecting assembly is provided on the A pipe and the B pipe; A locking mechanism, provided on the connecting assembly; A release mechanism, provided on the locking mechanism and the connecting assembly; The pressure-applying mechanism is arranged on the releasing mechanism and the connecting component.

[0006] Furthermore, the connecting assembly includes: a tube seat 1 fixedly connected to the B tube, with two threaded grooves symmetrically opened on the tube seat 1; a tube seat 2 fixedly connected to the A tube, with a cavity opened inside the tube seat 2; a rubber sleeve installed on the tube seat 1; and a rubber plug tube installed on the tube seat 2.

[0007] Furthermore, the outer side of the rubber stopper tube and the inner side of the rubber sleeve are both wavy structures.

[0008] Furthermore, the locking mechanism includes: a transmission shaft rotatably connected to the second tube seat, with hexagonal grooves at both ends of the transmission shaft, and two threaded grooves on both sides of the transmission shaft; two rotating shafts rotatably connected to the second tube seat cavity and staggered and perpendicular to the transmission shaft; two sets of gear sets, respectively arranged on both sides of the transmission shaft and between the two rotating shafts; limiting rods respectively fixed to one end of the two rotating shafts; bolts respectively slidably connected to the two limiting rods, and the two bolts pass through the two round holes of the second tube seat and the rubber plug tube; two silicone sleeves respectively installed between the two bolts and the two limiting rods.

[0009] Furthermore, both gear sets are composed of two cross-meshing helical gears, one of the helical gears in the two gear sets is respectively fixed to the two sides of the transmission shaft, and the other helical gears in the two gear sets are respectively fixed to the two rotating shafts.

[0010] Further, the release mechanism includes: two sleeves, which are respectively sleeved on the two threaded grooves 2 of the transmission shaft; bayonet pins which are respectively slidably connected to the two sleeves, and one end of the two bayonet pins is respectively located in the two threaded grooves 2 of the transmission shaft; buckles which are respectively slidably connected to the two sleeves, and two buckles are respectively provided with two folding grooves, and the two sides of the two bayonet pins are respectively slidably connected to the four folding grooves; compression springs are respectively connected between the two buckles and the two sleeves; fixed rods which are respectively fixed to the sides of the two buckles which are away from each other; sliding frames which are respectively slidably connected to the two fixed rods, and one side of the two sliding frames is respectively penetrated and slidably connected to the two sides of the pipe seat 2; extrusion sleeves which are respectively sleeved on the two ends of the transmission shaft, and the two extrusion sleeves are respectively provided with spiral grooves, and one end of the two sliding frames is respectively located in the two spiral grooves, and the two spiral grooves are provided with slots.

[0011] Furthermore, the folding groove consists of two flat grooves and one inclined groove, and the two flat grooves of the folding groove are located on both sides of the inclined groove and are connected.

[0012] Furthermore, the pressure mechanism includes: a pressure plate 1 respectively fixed to the two sleeve plates, the pressure plate 1 is slidably connected to the inner side of the pipe seat 2, and there are four inclined slot frames respectively fixed to the two inner sides of the two pressure plates 1; sliders respectively slidably connected to the four inclined slot frames; and a pressure plate 2 is fixed between the two sliders located on the same side of the two pressure plates, for a total of two.

[0013] Furthermore, a plurality of spherical protrusions are provided on the outer sides of the pressure plate 1 and the pressure plate 2.

[0014] Furthermore, it also includes a filling mechanism, which is arranged between pressure plate one and pressure plate two, and the filling mechanism includes: sixteen limit blocks, two limit blocks are fixedly connected to both sides of each pressure plate one and each pressure plate two; rotating plates are rotatably connected to each limit plate; a movable shaft is rotatably connected between every two adjacent rotating plates, a total of eight; a torsion spring is connected between every two adjacent rotating plates, a total of eight.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The wavy structure of the rubber stopper tube and the rubber sleeve cooperates with each other to effectively connect tube A and tube B; the transmission shaft rotates through the gear set to rotate the bolt to connect with the thread groove one of the tube seat one, and then squeezes the silicone sleeve together with the limit rod. The reaction force of the silicone sleeve makes the bolt pull the tube seat one, and then locks tube A and tube B laterally, which significantly enhances the connection effect; the thread groove two of the transmission shaft rotates to extrude the bayonet to drive the sleeve plate to move, and then the two pressure plates one and the two pressure plates two squeeze the inner side of the rubber stopper tube at the same time, so that the outer side of the rubber stopper tube is fully in contact with the inner side of the rubber sleeve, and then the connection between tube A and tube B is tighter, thereby enhancing the connection effect.

[0016] 2. When the temperature is too high, the staff can rotate the extrusion sleeve to make the spiral groove squeeze the two sliding frames into the slot, thereby driving the buckle to squeeze the bayonet pin and the threaded groove 2 of the transmission shaft to disengage, so that the pressure plate 1 and the pressure plate 2 no longer squeeze the rubber plug tube. In this way, damage can be reduced in a high temperature environment, the durability of the device can be improved, and the service life can be extended.

[0017] 3. While the pressure plates 1 and 2 are squeezing the rubber stopper tube, the gap between the pressure plates 1 and 2 will increase, and the pressure plates 1 and 2 will pull the two rotating plates on the same movable axis to rotate through the limit blocks. The rotation of the rotating plates will fill the gap between the pressure plates 1 and 2 and apply pressure to the un-squeezed part of the rubber stopper tube, making the pressure on the rubber stopper tube more comprehensive, thereby making the connection between tube A and tube B more thorough, thereby further enhancing the connection effect of tube A and tube B. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the B tube of the present invention.

[0020] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the A tube of the present invention.

[0021] Figure 4 It is a schematic diagram of the split three-dimensional structure of the connection component of the present invention.

[0022] Figure 5It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0024] Figure 7 It is a schematic cross-sectional three-dimensional structure diagram of the locking mechanism and the second pipe seat of the present invention.

[0025] Figure 8 It is a schematic diagram of the disassembled three-dimensional structure of the locking mechanism of the present invention.

[0026] Fig. 9 It is a partially cutaway three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of a partially disassembled three-dimensional structure of the locking mechanism of the present invention.

[0028] Fig.11 It is a partially cutaway three-dimensional structural schematic diagram of the pipe base 2, the transmission shaft and the release mechanism of the present invention.

[0029] Fig.12 It is a partial three-dimensional structural schematic diagram of the release mechanism and the transmission shaft of the present invention.

[0030] Fig.13 It is a schematic diagram of the partially disassembled three-dimensional structure of the release mechanism and the transmission shaft of the present invention.

[0031] Fig.14 It is a partially cutaway three-dimensional structural schematic diagram of the release mechanism and the transmission shaft of the present invention.

[0032] Fig.15 It is a partially cutaway three-dimensional structural schematic diagram of the release mechanism of the present invention.

[0033] Fig.16 It is a cross-sectional three-dimensional structural schematic diagram of the pressure-applying mechanism and the filling mechanism of the present invention.

[0034] Fig.17 It is a schematic diagram of the disassembled three-dimensional structure of the pressure applying mechanism of the present invention.

[0035] Fig.18 It is a partial three-dimensional structural schematic diagram of the filling mechanism of the present invention.

[0036] Fig.19 It is a schematic diagram of a partially disassembled three-dimensional structure of the filling mechanism of the present invention.

[0037] Figure numbers: 1-A tube, 2-B tube, 31-tube seat one, 32-tube seat two, 33-rubber sleeve, 34-rubber plug tube, 41-transmission shaft, 411-hexagonal groove, 42-rotating shaft, 43-gear set, 44-limit rod, 45-bolt, 46-silicone sleeve, 51-sleeve plate, 52-pin, 53-buckle, 531-folding groove, 54-compression spring, 55-fixing rod, 56-sliding frame, 57-extrusion sleeve, 571-spiral groove, 572-slot, 61-pressure plate one, 62-oblique groove frame, 63-sliding block, 64-pressure plate two, 71-limiting block, 72-rotating plate, 73-movable shaft, 74-torsion spring. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0039] Embodiment 1: A connection device for building water supply and drainage pipes, such as Figure 1-Figure 17 As shown, including: A tube 1 and B tube 2; A connecting assembly, used for preliminarily connecting the A tube 1 and the B tube 2, and arranged on the A tube 1 and the B tube 2; The locking mechanism is used to transversely lock the connection between the A tube 1 and the B tube 2 and the connection assembly, and is provided on the connection assembly; A release mechanism, provided on the locking mechanism and the connecting assembly; The pressure mechanism is used to apply pressure to the connection component from the inside to the outside, and is arranged on the release mechanism and the connection component. The release mechanism is used to release the pressure state of the pressure mechanism.

[0040] The connecting assembly includes: a tube seat 31 connected to the B tube 2 by bolts, and two threaded grooves 1 are symmetrically provided on the tube seat 31; a tube seat 2 32 connected to the A tube 1 by bolts, and a cavity is provided in the tube seat 2 32; a rubber sleeve 33 installed on the tube seat 1 31; a rubber plug tube 34 installed on the tube seat 2 32, used for plugging the rubber sleeve 33, and two round holes are provided on the rubber sleeve 33 and the rubber plug tube 34.

[0041] The outer side of the rubber plug tube 34 and the inner side of the rubber sleeve 33 are both wavy structures, which can be effectively matched for connection.

[0042] The locking mechanism includes: a transmission shaft 41 rotatably connected to the second tube seat 32, with hexagonal grooves 411 at both ends of the transmission shaft 41, and the hexagonal grooves 411 are used for the staff to rotate the transmission shaft 41, and two thread grooves 2 are opened on both sides of the transmission shaft 41, and the two thread grooves 2 on the transmission shaft 41 are symmetrically arranged; two rotating shafts 42 rotatably connected to the cavity of the second tube seat 32 and staggered and perpendicular to the transmission shaft 41, both located in the cavity of the second tube seat 32, and the two rotating shafts 42 are symmetrically arranged; two sets of gear sets 43, respectively arranged on both sides of the transmission shaft 41 and the two rotating shafts 42 are arranged in a symmetrical manner. The rotating shafts 42 are located in the cavity of the second tube seat 32 and are used to drive the two rotating shafts 42 to rotate through the transmission shaft 41; the limiting rods 44 are respectively welded to one end of the two rotating shafts 42; the bolts 45 are respectively slidably connected to the two limiting rods 44, and the two bolts 45 pass through the two round holes of the second tube seat 32 and the rubber plug tube 34, and the bolts 45 can cooperate with the threaded groove one on the first tube seat 31; the silicone sleeves 46 are respectively installed between the two bolts 45 and the two limiting rods 44, a total of two, for applying tension, and the silicone sleeves 46 are located inside the bolts 45.

[0043] The two gear sets 43 are composed of two cross-meshing helical gear sets 43, one of the helical gears in the two gear sets 43 is connected to both sides of the transmission shaft 41 through a keyway, and the other helical gears in the two gear sets 43 are connected to the two rotating shafts 42 through a keyway.

[0044] The release mechanism includes: two sleeves 51, which are arranged in a central symmetrical manner and are respectively sleeved on the two thread grooves 2 of the transmission shaft 41, and the two sides of the two sleeves 51 are in contact with the two sides of the inner wall of the second tube seat 32; the bayonet pins 52 are respectively slidably connected to the two sleeves 51, which are used to drive the sleeves 51 to move through the thread grooves 2 of the transmission shaft 41, and are arranged in a central symmetrical manner. One end of the two bayonet pins 52 is respectively located in the two thread grooves 2 of the transmission shaft 41; the buckles 53 are respectively slidably connected to the two sleeves 51, which are used to clamp the bayonet pins 52, and the two buckles 53 are each provided with two folding grooves 531, and the two sides of the two bayonet pins 52 slide with the four folding grooves 531 respectively. The two buckles 53 are connected to the two sleeve plates 51 respectively, and compression springs 54 are connected therebetween, and are located inside the sleeve plates 51; fixed rods 55 are respectively welded to the two buckles 53 on the side away from each other; sliding frames 56 are respectively connected to the two fixed rods 55 in a sliding manner, and the two sliding frames 56 are symmetrically arranged, and one side of the two sliding frames 56 is respectively connected to the two sides of the pipe seat 32 in a sliding manner; extrusion sleeves 57 are respectively sleeved on both ends of the transmission shaft 41, and the two extrusion sleeves 57 are each provided with a spiral groove 571, and one end of the two sliding frames 56 is respectively located in the two spiral grooves 571, and the two spiral grooves 571 are each provided with a clamping groove 572 for clamping the sliding frame 56.

[0045] The folding groove 531 consists of two flat grooves and one oblique groove. The two flat grooves of the folding groove 531 are located on both sides of the oblique groove and are connected.

[0046] The pressure mechanism includes: pressure plates 61 respectively welded on the two sleeve plates 51, which are symmetrically arranged, and the pressure plates 61 are slidingly connected to the inner side of the tube seat 32, and are respectively welded to the inclined groove frames 62 on both sides of the inner sides of the two pressure plates 61, for a total of four; sliders 63 respectively connected to the four inclined groove frames 62 in a sliding manner; a pressure plate 2 64 is welded between the two sliders 63 located on the same side of the two pressure plates 61, for a total of two, and the pressure plate 1 61 and the pressure plate 2 64 are used to squeeze the inner wall of the rubber plug tube 34.

[0047] A plurality of spherical protrusions are provided on the outer sides of the pressure plate 1 61 and the pressure plate 2 64 , which can more effectively squeeze the inner wall of the rubber plug tube 34 .

[0048] First, the staff will pipe socket 1 31 and pipe socket 2 32 as Figure 1 As shown, they are respectively installed on the A tube 1 and the B tube 2. When it is necessary to connect the A tube 1 and the B tube 2, the staff moves one of the A tube 1 and the B tube 2 to dock with the other, so that the rubber plug tube 34 is inserted into the rubber sleeve 33. The wavy structures of the rubber plug tube 34 and the rubber sleeve 33 will cooperate with each other, so that the A tube 1 and the B tube 2 are effectively connected; after the rubber plug tube 34 is inserted into the rubber sleeve 33, the bolt 45 will pass through the round hole of the rubber sleeve 33 and contact the thread groove 1 of the tube seat 31. At this time, the staff can use the hexagonal wrench to rotate the transmission shaft 41 through the hexagonal groove 411. The rotation of the transmission shaft 41 drives the rotating shaft 42, the limit rod 44 and the bolt 45 to rotate together through the gear set 43. The rotation of the bolt 45 will connect with the thread groove 1 of the tube seat 31. When the bolt 45 is connected, it will move in the direction away from the rotating shaft 42. The movement of the bolt 45 will connect with the limit rod 44. At the same time, the silicone sleeve 46 is extruded. Under the reaction force of the silicone sleeve 46, the bolt 45 pulls the tube seat 1 31 through the thread groove 1 of the tube seat 1 31, and then the A tube 1 and the B tube 2 are transversely locked through the tube seat 1 31 and the tube seat 2 32, which significantly enhances the connection effect; the rotation of the thread groove 2 of the transmission shaft 41 will squeeze the two bayonet pins 52 to drive the two sleeve plates 51 to move away from each other, and then drive the two pressure plates 1 61 to move away from each other, and the two pressure plates 1 61 drive the four inclined slot frames 62 to move, and then squeeze the four sliders 63 to drive the two pressure plates 2 64 to move away from each other. In this way, the two pressure plates 1 61 and the two pressure plates 2 64 squeeze the inner side of the rubber plug tube 34 at the same time, so that the outer side of the rubber plug tube 34 is fully in contact with the inner side of the rubber sleeve 33, and then the connection between the A tube 1 and the B tube 2 is tighter, thereby enhancing the connection effect; Since the rubber stopper tube 34 and the rubber sleeve 33 are easily deformed and expanded when the temperature rises without applying pressure, the continuous squeezing of the pressure plate 1 61 and the pressure plate 2 64 will cause irreversible damage to the rubber stopper tube 34 and the rubber sleeve 33, resulting in poor subsequent use effect. Therefore, when the temperature is too high, the staff can rotate the two squeezing sleeves 57 so that the two spiral grooves 571 squeeze the two sliding frames 56 to move, and the spiral grooves 571 continue to rotate so that the sliding frames 56 are stuck in the slots 572. The movement of the sliding frames 56 drives the buckle 53 to move through the fixing rod 55, and the compression spring 54 is compressed. Under the action of the folding groove 531, the folding groove 531 will squeeze the bayonet pin 52 to move in the direction away from the transmission shaft 41, so that the bayonet pin 52 is disengaged from the threaded groove 2 of the transmission shaft 41, thereby making the pressure plate 1 6 1 and the pressure plate 2 64 no longer squeeze the rubber plug tube 34, then the staff reversely rotates the extrusion sleeve 57 to make the sliding frame 56 disengage from the card slot 572, the compression spring 54 resets to drive the buckle 53 to reset, the folding groove 531 squeezes the bayonet 52 to reset and re-contact the threaded groove 2 of the transmission shaft 41, the buckle 53 drives the sliding frame 56 to extrude the spiral groove 571 through the fixing rod 55 to reset the extrusion sleeve 57, so that the damage can be reduced in a high temperature environment, the durability of the device is improved, and the service life is extended; when it is necessary to remove the connection between the A tube 1 and the B tube 2, the staff uses the hexagonal wrench to reversely rotate the transmission shaft 41 through the hexagonal groove 411, and then through the gear set 43 to make the bolt 45 reversely rotate and disengage from the threaded groove 1 of the tube seat 31, and then the staff pulls the rubber plug tube 34 out of the rubber sleeve 33.

[0049] Embodiment 2: Based on embodiment 1, Figure 1-Figure 3 , Figure 5 , Fig.16 , Fig.18 and Fig.19 As shown, a filling mechanism is also included for filling the gap between the pressure plate 1 61 and the pressure plate 2 64, and the filling mechanism is arranged between the pressure plate 1 61 and the pressure plate 2 64, and the filling mechanism includes: sixteen limit blocks 71, and two limit blocks 71 are welded on both sides of each pressure plate 1 61 and each pressure plate 2 64; a rotating plate 72 rotatably connected to each limit plate, and used to fill the gap between the pressure plate 1 61 and the pressure plate 2 64; a movable shaft 73 is rotatably connected between every two adjacent rotating plates 72, and there are eight in total; a torsion spring 74 is connected between every two adjacent rotating plates 72, and there are eight in total, and the eight torsion springs 74 are respectively mounted on the eight movable shafts 73.

[0050] When the pressure plate 1 61 and the pressure plate 2 64 squeeze the rubber stopper tube 34, the gap between the pressure plate 1 61 and the pressure plate 2 64 will increase, and the pressure plate 1 61 and the pressure plate 2 64 will pull the two rotating plates 72 on the same movable shaft 73 to rotate through the limit block 71. The torsion spring 74 is twisted, and the rotation of the rotating plate 72 will fill the gap between the pressure plate 1 61 and the pressure plate 2 64 and apply pressure to the un-squeezed portion of the rubber stopper tube 34, so that the pressure on the rubber stopper tube 34 is more comprehensive, and then the connection between the A tube 1 and the B tube 2 is more thorough, thereby further enhancing the connection effect of the A tube 1 and the B tube 2. When the pressure plate 1 61 and the pressure plate 2 64 no longer squeeze the added stopper tube, the pressure plate 1 61 and the pressure plate 2 64 no longer pull the rotating plate 72 through the limit block 71, and the torsion spring 74 is reset to drive the rotating plate 72 to reset.

[0051] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A connecting device for building water supply and drainage pipes, characterized by: include: Tube A (1) and tube B (2); A connecting assembly is provided on the A pipe (1) and the B pipe (2); A locking mechanism, provided on the connecting assembly; A release mechanism, provided on the locking mechanism and the connecting assembly; A pressure-applying mechanism, provided on the release mechanism and the connecting assembly; The connection assembly comprises: a tube seat (31) fixedly connected to the B tube (2), the tube seat (31) having two symmetrically formed thread grooves; a tube seat (32) fixedly connected to the A tube (1), the tube seat (32) having a cavity formed therein; a rubber sleeve (33) mounted on the tube seat (31); and a rubber plug tube (34) mounted on the tube seat (32); The locking mechanism comprises: a transmission shaft (41) rotatably connected to the second tube seat (32), both ends of the transmission shaft (41) are provided with hexagonal grooves (411), and both sides of the transmission shaft (41) are provided with two threaded grooves; two rotating shafts (42) rotatably connected to the cavity of the second tube seat (32) and staggered and perpendicular to the transmission shaft (41); two sets of gear sets (43), respectively arranged on both sides of the transmission shaft (41) and between the two rotating shafts (42); limiting rods (44) respectively fixed to one end of the two rotating shafts (42); bolts (45) respectively slidably connected to the two limiting rods (44), the two bolts (45) both pass through two round holes of the second tube seat (32) and the rubber plug tube (34); two silicone sleeves (46) respectively installed between the two bolts (45) and the two limiting rods (44).

2. A connecting device for building water supply and drainage pipes according to claim 1, characterized in that: The outer side of the rubber plug tube (34) and the inner side of the rubber sleeve (33) are both wavy structures.

3. A connecting device for building water supply and drainage pipes according to claim 1, characterized in that: The two gear sets (43) are each composed of two cross-meshing helical gear sets (43), one of the helical gears in the two gear sets (43) is respectively fixed to both sides of the transmission shaft (41), and the other helical gears in the two gear sets (43) are respectively fixed to the two rotating shafts (42).

4. A connecting device for building water supply and drainage pipes according to claim 1, characterized in that: The release mechanism comprises: two sleeve plates (51), which are respectively sleeved on two thread grooves (2) of the transmission shaft (41); two bayonet pins (52) which are respectively slidably connected to the two sleeve plates (51), one end of each of the two bayonet pins (52) being respectively located in the two thread grooves (2) of the transmission shaft (41); two buckles (53) which are respectively slidably connected to the two sleeve plates (51), each of the two buckles (53) having two folding grooves (531), and two sides of the two bayonet pins (52) are respectively slidably connected to the four folding grooves (531); the two buckles (53) are respectively connected to the two sleeve plates (51). A compression spring (54) is connected; fixed rods (55) are respectively fixed to the two sides of the two buckles (53) that are away from each other; sliding frames (56) are respectively slidably connected to the two fixed rods (55), one side of the two sliding frames (56) is respectively penetrated and slidably connected to the two sides of the second pipe seat (32); extrusion sleeves (57) are respectively sleeved on both ends of the transmission shaft (41), the two extrusion sleeves (57) are both provided with spiral grooves (571), one end of the two sliding frames (56) is respectively located in the two spiral grooves (571), and the two spiral grooves (571) are both provided with a clamping groove (572).

5. A connecting device for building water supply and drainage pipes according to claim 4, characterized in that: The folding groove (531) consists of two flat grooves and one oblique groove, and the two flat grooves of the folding groove (531) are located on both sides of the oblique groove and are connected.

6. A connecting device for building water supply and drainage pipes according to claim 4, characterized in that: The pressure mechanism comprises: a pressure plate 1 (61) respectively fixed on the two sleeve plates (51), the pressure plate 1 (61) being slidably connected to the inner side of the pipe seat 2 (32), four inclined slot frames (62) respectively fixed on both sides of the inner sides of the two pressure plates 1 (61), a sliding block (63) respectively slidably connected to the four inclined slot frames (62); and a pressure plate 2 (64) being fixed between the two sliding blocks (63) located on the same side of the two pressure plates 1 (61), two in total.

7. A connecting device for building water supply and drainage pipes according to claim 6, characterized in that: A plurality of spherical protrusions are provided on the outer sides of the pressure plate 1 (61) and the pressure plate 2 (64).

8. A connecting device for building water supply and drainage pipes according to claim 6, characterized in that: It also includes a filling mechanism, which is arranged between the pressure plate 1 (61) and the pressure plate 2 (64), and the filling mechanism includes: sixteen limit blocks (71), each of the pressure plate 1 (61) and each of the pressure plate 2 (64) has two limit blocks (71) fixedly connected on both sides; a rotating plate (72) rotatably connected to each limit plate; a movable shaft (73) rotatably connected between every two adjacent rotating plates (72), a total of eight; and a torsion spring (74) connected between every two adjacent rotating plates (72), a total of eight.

Images