Connecting equipment for PVC (polyvinyl chloride) water pipes and mounting method of connecting equipment

Abstract

The invention discloses connecting equipment for PVC water pipes and a mounting method thereof, and belongs to the technical field of PVC water pipes, the connecting equipment comprises a first water pipe, a second water pipe is arranged on one side of the first water pipe, a sealing assembly is arranged between the second water pipe and the first water pipe, a filtering assembly is arranged on one side in the second water pipe, and the first water pipe and the second water pipe are connected through a connecting assembly; by arranging the connecting assembly, when a first water pipe and a second water pipe are connected, a pulling plate is pulled to drive a sliding rod and a limiting plate to slide in a fixing barrel, a spring is compressed, then the first water pipe and the second water pipe are connected, folded plates on one sides of the two ends of the first water pipe are inserted into inserting grooves of fixing bases, the pulling plate is loosened, and the spring elastically stretches to push the sliding rod to reset; and one end of the sliding rod enters a clamping hole of the folding plate, the effect of limiting and fixing the folding plate and the fixing base is achieved, and therefore the effect of fixing the first water pipe and the second water pipe is achieved, and the first water pipe and the second water pipe are conveniently and rapidly disassembled, assembled and fixed through the arrangement of the connecting assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of PVC water pipes, and in particular relates to a connection device for PVC water pipes and an installation method thereof. Background Art

[0002] PVC water pipes are made of sanitary grade polyvinyl chloride (PVC) resin as the main raw material, with appropriate amounts of stabilizers, lubricants, fillers, color enhancers, etc. added, and are extruded by a plastic extruder and injection molded by an injection molding machine. The production of pipes and fittings is completed through processes such as cooling, curing, shaping, inspection, and packaging.

[0003] The existing technology has the following problems: 1. The existing PVC water pipes have complicated steps for connecting water pipes, and the water pipes are not easy to quickly disassemble, connect and fix; 2. The existing PVC water pipes have poor sealing after connection, which is prone to leakage and low connection quality; 3. The existing PVC water pipes do not have a filtering function after being connected, and are unable to filter the transported water. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a connection device for PVC water pipes, which has the characteristics of easy and quick disassembly, connection and fixation of water pipes, better sealing after the water pipes are connected, and the transported water can be filtered.

[0005] The invention also provides an installation method of the connection device for the PVC water pipe.

[0006] To achieve the above object, the present invention provides the following technical solution: a connection device for PVC water pipes, comprising a water pipe 1, a water pipe 2 is arranged on one side of the water pipe 1, a sealing component is arranged between the water pipe 2 and the water pipe 1, a filter component is arranged on one side of the inside of the water pipe 2, and the water pipe 1 and the water pipe 2 are connected by a connection component; The connecting component includes a fixed seat, a folding plate, a fixed cylinder, a clamping hole, a slot, a sliding rod, a pull plate, a limit plate, a limit assembly and a spring, wherein a folding plate is fixed on one side of one end of the water pipe, a fixed seat is fixed on one side of the second end of the water pipe, a slot corresponding to the folding plate is opened at one end of the fixed seat, a fixed cylinder is fixed at one end of the fixed seat, a sliding rod slides in the fixed cylinder, a pull plate is fixed at one end of the sliding rod, a limit plate is fixed on the surface of the sliding rod inside the fixed cylinder, a spring is sleeved on the outside of the sliding rod between the limit plate and the fixed cylinder, a clamping hole corresponding to the sliding rod is opened in the folding plate, and a limit assembly is arranged at the position corresponding to the pull plate at one end of the fixed seat.

[0007] Furthermore, the limiting assembly includes a rotating rod, a baffle, a magnet one, a magnet two and a strap, wherein a rotating rod is rotated at a position corresponding to one end of the fixed seat and the pull plate, a baffle is fixed to the other end of the rotating rod, a magnet one is clamped at one end of the baffle, a magnet two is clamped at one end of the pull plate and the magnet one, and a strap is fixed to a position corresponding to one end of the pull plate and the baffle.

[0008] Furthermore, after the folding plate enters the slot, the side edge of the folding plate is in close contact with the inner wall of the slot, and sliding holes corresponding to the sliding rod are provided in the fixing seat and the fixing tube. When the pull plate is not pulled, the side edge of the baffle is flush with the side edge of the pull plate.

[0009] Furthermore, the sealing assembly includes a connecting ring, a fixed tube, an arc-shaped edge and a rubber ring, wherein a connecting ring is fixed at one end inside the second water pipe, a fixed tube is fixed on the inner side of the connecting ring, an arc-shaped edge is provided on the outer side of one end of the fixed tube away from the connecting ring, and a rubber ring is bonded to one end inside the first water pipe by glue.

[0010] Furthermore, the sealing assembly also includes a guide bucket and support rods, wherein a guide bucket is fixed on one side of the inner part of the water pipe close to the rubber ring, and a plurality of support rods are fixed between the guide bucket and the water pipe.

[0011] Furthermore, after the water pipe 1 is connected to the water pipe 2, the outer side of the fixed pipe squeezes the inner side of the rubber ring, and one end of the rubber ring is flush with one end of the water pipe 1 and one end of the connecting ring is flush with one end of the water pipe 2.

[0012] Furthermore, the filter assembly includes a filter plate, a clamping block, a clamping groove, a fixing bolt, a fixing hole and a through-hole, wherein a filter plate is arranged on one side of the interior of the fixed tube, clamping blocks are fixed at both ends of the filter plate, a clamping groove corresponding to the clamping block is opened at one end of the fixed tube, the clamping block and the fixed tube are connected by a fixing bolt, a fixing hole corresponding to the fixing bolt is opened in the clamping groove, a through-hole corresponding to the fixing bolt is opened in the clamping block, and after the filter plate enters the fixed tube, the outer side of the filter plate is tightly attached to the inner wall of the fixed tube.

[0013] Furthermore, a method for installing a connection device for a PVC water pipe comprises the following steps: The first step is to connect the first and second pipes, and the second ... Step 2: When water pipe 1 and water pipe 2 are connected, the fixed pipe inside water pipe 2 is inserted into water pipe 1. When the fixed pipe is inserted into water pipe 1, the fixed pipe squeezes the rubber ring at one end inside water pipe 2. An arc edge is provided on the side of one end of the fixed pipe to prevent the fixed pipe from scratching the rubber ring. By providing a sealing component, the sealing performance of water pipe 1 and water pipe 2 is better after they are connected. By providing a guide bucket at one end inside water pipe 1, water flow can be drained, and water flow can be drained into the fixed pipe to prevent water flow from impacting the gap between the fixed pipe and the rubber ring. A number of support rods are fixed between the guide bucket and water pipe 1 to make the guide bucket more stable. Step three: Before connecting water pipe two, place the filter plate into the fixed pipe, and the blocks at both ends of the filter plate into the slots. Then, insert the fixing bolts into the through holes of the blocks, and screw the fixing bolts into the fixing holes to achieve the effect of limiting and fixing the blocks and the filter plate. By setting the filter assembly, the water transported by water pipe two can be filtered, thereby improving the practicality of water pipe two.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a connecting component. When water pipe 1 and water pipe 2 are connected, the pull plate is pulled to drive the slide rod and the limit plate to slide in the fixed cylinder, and the spring is compressed. Then water pipe 1 and water pipe 2 are connected, and the folding plates on one side of the two ends of water pipe 1 are inserted into the slots of the fixed seat. The pull plate is released, and the spring is extended to push the slide rod to reset. One end of the slide rod enters the clamping hole of the folding plate, so as to achieve the effect of limiting and fixing between the folding plate and the fixed seat, thereby achieving the effect of fixing water pipe 1 and water pipe 2. The setting of the connecting component facilitates the quick disassembly, assembly and fixation of water pipe 1 and water pipe 2.

[0015] 2. The present invention sets a sealing component. When water pipe one and water pipe two are connected, the fixed pipe inside water pipe two is inserted into water pipe one. When the fixed pipe is inserted into water pipe one, the fixed pipe squeezes the rubber ring at one end inside water pipe two. An arc edge is set on the side of one end of the fixed pipe to prevent the fixed pipe from scratching the rubber ring. By setting the sealing component, the sealing performance of water pipe one and water pipe two is better after being connected.

[0016] 3. The present invention sets a filter assembly. Before the water pipe 2 is connected, the filter plate is placed in the fixed pipe, and the blocks at both ends of the filter plate enter the slots. Then, the fixing bolts are inserted into the through holes of the blocks, and the fixing bolts are screwed into the fixing holes, so as to achieve the effect of limiting and fixing the blocks and the filter plate. By setting the filter assembly, the water transported by the water pipe 2 can be filtered, thereby improving the practicality of the water pipe 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the present invention; Figure 2 It is a three-dimensional diagram of the connection between water pipe 1 and water pipe 2 of the present invention; Figure 3 It is a cutaway perspective view of a water pipe of the present invention; Figure 4 It is a two-dimensional cutaway view of the water pipe of the present invention; Figure 5 It is a cutaway perspective view of the fixing tube of the present invention; Figure 6 It is a cutaway perspective view of the connecting pipe and the fixing pipe when the filter plate of the present invention is installed; In the figure: 1. water pipe 1; 2. connecting assembly; 21. fixing seat; 22. folding plate; 23. fixing cylinder; 24. clamping hole; 25. slot; 26. sliding rod; 27. pulling plate; 28. limiting plate; 29. ​​limiting assembly; 291. rotating rod; 292. baffle; 293. magnetic block 1; 294. magnetic block 2; 295. strap; 210. spring; 3. sealing assembly; 31. connecting ring; 32. fixing pipe; 33. arc edge; 34. rubber ring; 35. guide bucket; 36. support rod; 4. filtering assembly; 41. filter plate; 42. clamping block; 43. clamping slot; 44. fixing bolt; 45. fixing hole; 46. perforation; 5. water pipe 2. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] See also Figure 1-6 The present invention provides the following technical solutions: a connection device for PVC water pipes, comprising a water pipe 1, a water pipe 2 5 is arranged on one side of the water pipe 1, a sealing component 3 is arranged between the water pipe 2 5 and the water pipe 1, a filter component 4 is arranged on one side of the water pipe 2 5, and the water pipe 1 1 and the water pipe 2 5 are connected by a connection component 2; The connecting component 2 includes a fixed seat 21, a folding plate 22, a fixed cylinder 23, a clamping hole 24, a slot 25, a sliding rod 26, a pull plate 27, a limit plate 28, a limit assembly 29 and a spring 210, wherein a folding plate 22 is fixed on one side of both ends of the water pipe 1, and a fixed seat 21 is fixed on one side of both ends of the water pipe 25. A slot 25 corresponding to the folding plate 22 is opened at one end of the fixed seat 21, a fixed cylinder 23 is fixed at one end of the fixed seat 21, a sliding rod 26 slides in the fixed cylinder 23, a pull plate 27 is fixed at one end of the sliding rod 26, a limit plate 28 is fixed on the surface of the sliding rod 26 inside the fixed cylinder 23, a spring 210 is sleeved on the outside of the sliding rod 26 between the limit plate 28 and the fixed cylinder 23, a clamping hole 24 corresponding to the sliding rod 26 is opened in the folding plate 22, and a limit assembly 29 is set at the position corresponding to the pull plate 27 at one end of the fixed seat 21.

[0020] Further in the present invention, the limiting assembly 29 includes a rotating rod 291, a baffle 292, a magnet 1 293, a magnet 294 and a strap 295, wherein the rotating rod 291 is rotated at a position corresponding to the pull plate 27 at one end of the fixed seat 21, the baffle 292 is fixed at the other end of the rotating rod 291, the magnet 1 293 is clamped at one end of the baffle 292, the magnet 2 294 is clamped at a position corresponding to the magnet 1 293 at one end of the pull plate 27, and the strap 295 is fixed at a position corresponding to the baffle 292 at one end of the pull plate 27.

[0021] By adopting the above technical solution, when there is no need to pull the pulling plate 27, the baffle 292 is moved, and the baffle 292 is rotated on the fixed seat 21 through the rotating rod 291. After the baffle 292 is rotated to the side of the pulling plate 27, the magnetic block 1 293 at one end of the baffle 292 is adsorbed by the magnetic block 294 at one end of the pulling plate 27, so as to achieve the effect of adsorbing and fixing the baffle 292 and the pulling plate 27. The bridge plate 295 at one end of the pulling plate 27 supports the baffle 292, and the baffle 292 can limit the pulling plate 27 to avoid pulling the pulling plate 27 by mistake.

[0022] Furthermore, in the present invention, after the folding plate 22 enters the slot 25, the side of the folding plate 22 is tightly attached to the inner wall of the slot 25, and sliding holes corresponding to the sliding rod 26 are opened in the fixing seat 21 and the fixing tube 23. When the pull plate 27 is not pulled, the side of the baffle 292 is flush with the side of the pull plate 27.

[0023] By adopting the above technical solution, after the folding plate 22 enters the slot 25, the folding plate 22 is more stable in the slot 25, the sliding rod 26 can slide in the fixing seat 21 and the fixing tube 23, and when the pull plate 27 is not pulled, the side edge of the baffle 292 is flush with the side edge of the pull plate 27, so that the baffle 292 has a better limiting effect on the pull plate 27, and the baffle 292 and the pull plate 27 are more closely fitted.

[0024] When the present embodiment is used, the connection device for PVC water pipes is used, the device is installed in a suitable position, and when the water pipe 1 and the water pipe 2 are connected, the pull plate 27 is pulled to drive the slide bar 26 and the limit plate 28 to slide in the fixed cylinder 23, and the spring 210 is compressed, and then the water pipe 1 and the water pipe 2 are connected, and the folding plates 22 on one side of the two ends of the water pipe 1 are inserted into the slots 25 of the fixing seat 21, and the pull plate 27 is released. The spring 210 is stretched and pushes the slide bar 26 to reset, and one end of the slide bar 26 enters the clamping hole 24 of the folding plate 22, so as to achieve the effect of limiting and fixing between the folding plate 22 and the fixing seat 21, thereby achieving the effect of fixing the water pipe 1 and the water pipe 2. 5, by setting the connection component 2, it is convenient for the quick disassembly and assembly between the water pipe 1 and the water pipe 2 5, by setting the limit component 29, when there is no need to pull the pull plate 27, the baffle 292 is toggled, and the baffle 292 is rotated on the fixing seat 21 through the rotating rod 291. After the baffle 292 is rotated to the side of the pull plate 27, the magnetic block 1 293 at one end of the baffle 292 is adsorbed with the magnetic block 294 at one end of the pull plate 27, so as to achieve the effect of adsorption and fixation between the baffle 292 and the pull plate 27, and the lap plate 295 at one end of the pull plate 27 supports the baffle 292, and the baffle 292 can limit the pull plate 27 to avoid the pull plate 27 from being pulled by mistake; Example

[0025] The difference between this embodiment and embodiment 1 is that the sealing assembly 3 includes a connecting ring 31, a fixing tube 32, an arc-shaped edge 33 and a rubber ring 34, wherein a connecting ring 31 is fixed at one end inside the water pipe 2 5, a fixing tube 32 is fixed inside the connecting ring 31, an arc-shaped edge 33 is provided on the outer side of one end of the fixing tube 32 away from the connecting ring 31, and a rubber ring 34 is glued to one end inside the water pipe 1 by glue.

[0026] By adopting the above technical solution, when water pipe 1 and water pipe 2 5 are connected, the fixed pipe 32 inside water pipe 2 5 is inserted into water pipe 1. When the fixed pipe 32 is inserted into water pipe 1 1, the fixed pipe 32 squeezes the rubber ring 34 at one end of the inside of water pipe 2 5. An arc edge 33 is provided on the side of one end of the fixed pipe 32 to prevent the fixed pipe 32 from scratching the rubber ring 34. By providing the sealing component 3, the sealing performance of water pipe 1 and water pipe 2 5 is better after being connected.

[0027] Further in the present invention, the sealing assembly 3 also includes a guide bucket 35 and a support rod 36, wherein the guide bucket 35 is fixed on one side of the water pipe 1 close to the rubber ring 34, and a plurality of support rods 36 are fixed between the guide bucket 35 and the water pipe 1.

[0028] By adopting the above technical solution, a guide bucket 35 is set at one end inside the water pipe 1 to guide the water flow, and the water flow can be guided into the fixed pipe 32 to prevent the water flow from impacting the gap between the fixed pipe 32 and the rubber ring 34, and a plurality of support rods 36 are fixed between the guide bucket 35 and the water pipe 1 to make the guide bucket 35 more stable.

[0029] Further in the present invention, after water pipe 1 is connected to water pipe 2 5 , the outer side of the fixed pipe 32 squeezes the inner side of the rubber ring 34 , and one end of the rubber ring 34 is flush with one end of the water pipe 1 , and one end of the connecting ring 31 is flush with one end of the water pipe 2 5 .

[0030] By adopting the above technical solution, after water pipe 1 is connected to water pipe 2 5 , the outer side of the fixed pipe 32 squeezes the inner side of the rubber ring 34 to improve the sealing between the fixed pipe 32 and the rubber ring 34 , and one end of the rubber ring 34 and one end of the connecting ring 31 will not protrude from the sides of water pipe 1 1 and water pipe 2 5 respectively.

[0031] When the present embodiment is used, when the water pipe 1 and the water pipe 2 5 are connected, the fixed pipe 32 inside the water pipe 2 5 is inserted into the water pipe 1. When the fixed pipe 32 is inserted into the water pipe 1, the fixed pipe 32 squeezes the rubber ring 34 at one end of the water pipe 2 5. An arc edge 33 is provided on the side of one end of the fixed pipe 32 to prevent the fixed pipe 32 from scratching the rubber ring 34. By providing the sealing component 3, the sealing performance of the water pipe 1 and the water pipe 2 5 after being connected is better. By providing a guide bucket 35 at one end of the water pipe 1, the water flow can be drained, and the water flow can be drained into the fixed pipe 32 to prevent the water flow from impacting the gap between the fixed pipe 32 and the rubber ring 34. A plurality of support rods 36 are fixed between the guide bucket 35 and the water pipe 1 to make the guide bucket 35 more stable. Example

[0032] The present embodiment is different from the embodiments 1 and 2 in that: the filter assembly 4 includes a filter plate 41, a block 42, a slot 43, a fixing bolt 44, a fixing hole 45 and a through hole 46, wherein a filter plate 41 is arranged on one side inside the fixed tube 32, blocks 42 are fixed at both ends of the filter plate 41, a slot 43 corresponding to the block 42 is provided at one end of the fixed tube 32, the block 42 and the fixed tube 32 are connected by a fixing bolt 44, a fixing hole 45 corresponding to the fixing bolt 44 is provided in the slot 43, a through hole 46 corresponding to the fixing bolt 44 is provided in the block 42, and after the filter plate 41 enters the fixed tube 32, the outer side of the filter plate 41 is in close contact with the inner wall of the fixed tube 32.

[0033] By adopting the above technical solution, the filter plate 41 is placed in the fixed pipe 32 before the water pipe 2 5 is connected, and the blocks 42 at both ends of the filter plate 41 enter the slots 43. Then, the fixing bolts 44 are inserted into the through holes 46 of the blocks 42, and the fixing bolts 44 are screwed into the fixing holes 45, so as to achieve the effect of limiting and fixing the blocks 42 and the filter plate 41. By setting the filter assembly 4, the water transported by the water pipe 2 5 can be filtered, thereby improving the practicality of the water pipe 2 5.

[0034] When this embodiment is used, the filter plate 41 is placed in the fixed pipe 32 before the water pipe 25 is connected, and the blocks 42 at both ends of the filter plate 41 enter the slots 43. Then the fixing bolts 44 are inserted into the through holes 46 of the blocks 42, and the fixing bolts 44 are screwed into the fixing holes 45, so as to achieve the effect of limiting and fixing the blocks 42 and the filter plate 41. By setting the filter assembly 4, the water transported by the water pipe 25 can be filtered, thereby improving the practicality of the water pipe 25.

[0035] Working principle and use process of the present invention: When the connection device for PVC water pipes is used, the device is installed in a suitable position. When the water pipe 1 and the water pipe 2 are connected, the pull plate 27 is pulled to drive the slide bar 26 and the limit plate 28 to slide in the fixed tube 23, and the spring 210 is compressed. Then the water pipe 1 and the water pipe 2 are connected, and the folding plates 22 on one side of the two ends of the water pipe 1 are inserted into the slots 25 of the fixing seat 21. The pull plate 27 is released, and the spring 210 is stretched to push the slide bar 26 to reset. One end of the slide bar 26 enters the clamping hole 24 of the folding plate 22, so as to achieve the limit fixation between the folding plate 22 and the fixing seat 21. The fixing effect is achieved, thereby achieving the effect of fixing the water pipe 1 and the water pipe 2 5. By setting the connecting component 2, it is convenient for the water pipe 1 and the water pipe 2 5 to be quickly disassembled and fixed. By setting the limit component 29, when there is no need to pull the pull plate 27, the baffle 292 is toggled, and the baffle 292 rotates on the fixing seat 21 through the rotating rod 291. After the baffle 292 rotates to the side of the pull plate 27, the magnetic block 1 293 at one end of the baffle 292 is adsorbed with the magnetic block 294 at one end of the pull plate 27, so as to achieve the effect of adsorbing and fixing the baffle 292 and the pull plate 27. The plate 295 at one end of the pull plate 27 is attached to the baffle 2 92 supports, and the baffle 292 can limit the pull plate 27 to avoid the pull plate 27 from being pulled by mistake; when the water pipe 1 and the water pipe 2 5 are connected, the fixed pipe 32 inside the water pipe 2 5 is inserted into the water pipe 1. When the fixed pipe 32 is inserted into the water pipe 1, the fixed pipe 32 squeezes the rubber ring 34 at one end of the water pipe 2 5. An arc edge 33 is provided on the side of one end of the fixed pipe 32 to prevent the fixed pipe 32 from scratching the rubber ring 34. By providing the sealing component 3, the sealing performance of the water pipe 1 and the water pipe 2 5 after being connected is better. By providing a guide bucket 35 at one end of the water pipe 1, the water flow can be drained, and the water flow can be directed to the fixed pipe 32. Drainage is performed to prevent water flow from impacting the gap between the fixed pipe 32 and the rubber ring 34, and a number of support rods 36 are fixed between the guide bucket 35 and the water pipe 1 to make the guide bucket 35 more stable; before connecting the water pipe 25, the filter plate 41 is placed in the fixed pipe 32, and the blocks 42 at both ends of the filter plate 41 enter the slots 43, and then the fixing bolts 44 are inserted into the through holes 46 of the blocks 42, and the fixing bolts 44 are screwed into the fixing holes 45, so as to achieve the effect of limiting and fixing the blocks 42 and the filter plate 41. By setting the filter assembly 4, the water transported by the water pipe 25 can be filtered, thereby improving the practicality of the water pipe 25.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection device for PVC water pipes, comprising a water pipe (1), characterized in that: A water pipe 2 (5) is arranged on one side of the water pipe 1 (1), a sealing component (3) is arranged between the water pipe 2 (5) and the water pipe 1 (1), a filtering component (4) is arranged on one side of the interior of the water pipe 2 (5), and the water pipe 1 (1) and the water pipe 2 (5) are connected via a connecting component (2); The connection assembly (2) comprises a fixing seat (21), a folding plate (22), a fixing cylinder (23), a clamping hole (24), a slot (25), a sliding rod (26), a pulling plate (27), a limiting plate (28), a limiting assembly (29) and a spring (210), wherein the folding plates (22) are fixed to one side of both ends of the water pipe 1 (1), the fixing seats (21) are fixed to one side of both ends of the water pipe 2 (5), one end of the fixing seat (21) is provided with a slot (25) corresponding to the folding plate (22), and one end of the fixing seat (21) is fixed A fixed cylinder (23) is provided, a slide rod (26) slides in the fixed cylinder (23), a pull plate (27) is fixed to one end of the slide rod (26), a limit plate (28) is fixed to the surface of the slide rod (26) inside the fixed cylinder (23), a spring (210) is sleeved on the outer side of the slide rod (26) between the limit plate (28) and the fixed cylinder (23), a clamping hole (24) corresponding to the slide rod (26) is opened in the folding plate (22), and a limit assembly (29) is provided at a position corresponding to the pull plate (27) at one end of the fixed seat (21).

2. A connection device for PVC water pipes according to claim 1, characterized in that: The position limiting assembly (29) comprises a rotating rod (291), a baffle (292), a first magnetic block (293), a second magnetic block (294) and a strap (295), wherein the rotating rod (291) is rotatably mounted at a position corresponding to the pull plate (27) at one end of the fixed seat (21), the baffle (292) is fixed at the other end of the rotating rod (291), the first magnetic block (293) is clamped at one end of the baffle (292), the second magnetic block (294) is clamped at a position corresponding to the first magnetic block (293) at one end of the pull plate (27), and the strap (295) is fixed at a position corresponding to the baffle (292) at one end of the pull plate (27).

3. A connection device for PVC water pipes according to claim 2, characterized in that: After the folding plate (22) enters the slot (25), the side of the folding plate (22) is in close contact with the inner wall of the slot (25), the fixing seat (21) and the fixing cylinder (23) are both provided with sliding holes corresponding to the sliding rod (26), and when the pull plate (27) is not pulled, the side of the baffle plate (292) is flush with the side of the pull plate (27).

4. A connection device for PVC water pipes according to claim 1, characterized in that: The sealing assembly (3) comprises a connecting ring (31), a fixing tube (32), an arc-shaped edge (33) and a rubber ring (34), wherein a connecting ring (31) is fixed to one end of the interior of the water pipe (5), a fixing tube (32) is fixed to the inside of the connecting ring (31), an arc-shaped edge (33) is provided on the outer side of one end of the fixing tube (32) away from the connecting ring (31), and a rubber ring (34) is bonded to one end of the interior of the water pipe (1) by glue.

5. A connection device for PVC water pipes according to claim 4, characterized in that: The sealing assembly (3) further comprises a guide bucket (35) and support rods (36), wherein the guide bucket (35) is fixed on one side of the water pipe (1) close to the rubber ring (34), and a plurality of support rods (36) are fixed between the guide bucket (35) and the water pipe (1).

6. A connection device for PVC water pipes according to claim 5, characterized in that: After the water pipe one (1) is connected to the water pipe two (5), the outer side of the fixing pipe (32) squeezes the inner side of the rubber ring (34), and one end of the rubber ring (34) and one end of the water pipe one (1) as well as one end of the connecting ring (31) and one end of the water pipe two (5) are flush.

7. A connection device for PVC water pipes according to claim 4, characterized in that: The filter assembly (4) comprises a filter plate (41), a clamping block (42), a clamping groove (43), a fixing bolt (44), a fixing hole (45) and a through hole (46), wherein a filter plate (41) is arranged on one side of the interior of the fixing tube (32), clamping blocks (42) are fixed at both ends of the filter plate (41), a clamping groove (43) corresponding to the clamping block (42) is provided at one end of the fixing tube (32), the clamping block (42) and the fixing tube (32) are connected via a fixing bolt (44), a fixing hole (45) corresponding to the fixing bolt (44) is provided in the clamping groove (43), a through hole (46) corresponding to the fixing bolt (44) is provided in the clamping block (42), and after the filter plate (41) enters the fixing tube (32), the outer side of the filter plate (41) is in close contact with the inner wall of the fixing tube (32).

8. A method for installing a connection device for PVC water pipes according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: When the water pipe 1 (1) and the water pipe 2 (5) are connected, the pull plate (27) is pulled to drive the slide bar (26) and the limit plate (28) to slide in the fixed tube (23), and the spring (210) is compressed. Then, the water pipe 1 (1) and the water pipe 2 (5) are connected again. The folding plates (22) on one side of the two ends of the water pipe 1 (1) are inserted into the slots (25) of the fixed seat (21). The pull plate (27) is released, and the spring (210) is stretched to push the slide bar (26) to reset. One end of the slide bar (26) enters the clamping hole (24) of the folding plate (22), so as to achieve the effect of limiting and fixing the folding plate (22) and the fixed seat (21), thereby achieving the effect of fixing the water pipe 1 (1) and the water pipe 2 (5). By setting the connection The connecting assembly (2) facilitates the rapid disassembly, assembly and fixation between the water pipe 1 (1) and the water pipe 2 (5). By setting the limiting assembly (29), when the pull plate (27) does not need to be pulled, the baffle plate (292) is moved, and the baffle plate (292) is rotated on the fixing seat (21) through the rotating rod (291). After the baffle plate (292) is rotated to the side of the pull plate (27), the magnetic block 1 (293) at one end of the baffle plate (292) is adsorbed with the magnetic block 2 (294) at one end of the pull plate (27), so as to achieve the effect of adsorbing and fixing the baffle plate (292) and the pull plate (27). The bridging plate (295) at one end of the pull plate (27) supports the baffle plate (292), and the baffle plate (292) can limit the pull plate (27) to avoid the pull plate (27) from being pulled by mistake. Step 2: When the water pipe 1 (1) and the water pipe 2 (5) are connected, the fixed pipe (32) inside the water pipe 2 (5) is inserted into the water pipe 1 (1). When the fixed pipe (32) is inserted into the water pipe 1 (1), the fixed pipe (32) squeezes the rubber ring (34) at one end of the water pipe 2 (5). An arc edge (33) is provided on the side of one end of the fixed pipe (32) to prevent the fixed pipe (32) from scratching the rubber ring (34). By providing a sealing component (3), the sealing performance of the water pipe 1 (1) and the water pipe 2 (5) after being connected is improved. By providing a guide bucket (35) at one end of the water pipe 1 (1), water flow can be guided to the fixed pipe (32) to prevent the water flow from impacting the gap between the fixed pipe (32) and the rubber ring (34). A plurality of support rods (36) are fixed between the guide bucket (35) and the water pipe 1 (1) to make the guide bucket (35) more stable. Step 3: Before connecting the water pipe 2 (5), the filter plate (41) is placed in the fixed pipe (32), and the clamping blocks (42) at both ends of the filter plate (41) are inserted into the clamping grooves (43). Then, the fixing bolts (44) are inserted into the through holes (46) of the clamping blocks (42), and the fixing bolts (44) are screwed into the fixing holes (45) to achieve the effect of limiting and fixing the clamping blocks (42) and the filter plate (41). By setting the filter assembly (4), the water transported by the water pipe 2 (5) can be filtered, thereby improving the practicality of the water pipe 2 (5).

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