PVC (polyvinyl chloride) plastic connecting pipe

Abstract

The utility model discloses a PVC plastic connecting pipe, and particularly relates to the technical field of PVC plastic pipes, the PVC plastic connecting pipe comprises a first pipe body, the outer wall of the first pipe body is fixedly connected with a sealing adjusting structure, the sealing adjusting structure is arranged on the inner wall of a connecting ring, the outer wall of the connecting ring is connected with an adjusting ring through a bearing, and the outer wall of the adjusting ring is provided with a friction block. The inner wall of the adjusting ring is in threaded connection with a threaded sleeve, the other side of the threaded sleeve is fixedly connected with a connecting pipe body, and a sealing ring is installed on the inner wall of the fixing ring. According to the PVC plastic connecting pipe, positioning, sealing and fixing functions are integrated, a plurality of independent components needed in a traditional connecting mode are reduced, the pipeline connecting structure is simplified, meanwhile, the problem that in the traditional connecting mode, the possibility that fault points are increased due to the existence of the multiple components is solved, and the service life of the connecting pipe is prolonged. And through the integrated design, the matching problem among the components is further reduced, and the fault risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to PVC plastic pipe technical field, concretely is a PVC plastic connecting pipe. BACKGROUND

[0002] PVC plastic pipe is a kind of pipeline product with polyvinyl chloride resin as main raw material, join appropriate stabilizer, lubricant, plasticizer and so on auxiliary agent, is manufactured by extrusion or injection molding process, PVC plastic connecting pipe is widely used in building water supply and drainage, power cable protection, communication line laying, chemical pipeline system and so on Field, usually for flange connection, electric melting connection, adhesive connection and so on.

[0003] Since the above-mentioned plastic connection mode needs to carry multiple different devices, thereby reduce the efficiency of staff to the plastic connecting pipe connection, simultaneously, in the mechanical connection mode of transmission, need to use multiple independent components, since the independent components required are too much, thereby increase the possibility of fault point, affect the effect of the overall device to the plastic connecting pipe connection, therefore, according to the existing PVC plastic connecting pipe connection required workpiece too many problems are improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of PVC plastic connecting pipe to solve the problems presented in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of PVC plastic connecting pipe, the outer wall of the primary pipe body is fixedly connected with sealing adjustment structure, and sealing adjustment structure is arranged in the inner wall of connecting ring, the outer wall of the connecting ring is bearingly connected with adjusting ring, and the outer wall of adjusting ring is provided with friction block, the inner wall of adjusting ring is threadedly connected with threaded sleeve, and the inner wall of threaded sleeve is sleeved with sealing ring, the other side of threaded sleeve is fixedly connected with connecting pipe body, and the inner wall of connecting pipe body is installed with fixed ring, the inner wall of fixed ring is installed with sealing ring, and the outer wall of sealing ring is movably connected with second pipe body.

[0006] Preferably, the number of the connecting ring and the adjusting ring is two, and the two connecting rings and the adjusting rings are symmetrically arranged with the mid-perpendicular line of the connecting pipe body as the axis of symmetry.

[0007] Preferably, the sealing adjustment structure includes a limiting ring, and the limiting ring is arranged in the inner wall of the connecting ring, one side of the limiting ring is fixedly connected with a fixed plate, and the inner wall of the fixed plate is fixedly connected with the primary pipe body, the length of the primary pipe body penetrating the fixed plate is the same as the distance from the sealing ring to the center of the connecting pipe body.

[0008] Preferably, the other side of the limiting ring is provided with an adjusting groove, and the inner wall of the adjusting groove is provided with a fixing sleeve, one side of the fixing sleeve is fixedly connected with a sliding rod, and the other end of the sliding rod is fixedly connected with a return spring, and the sliding rod and the return spring constitute compression movement through the fixing sleeve.

[0009] Preferably, the inner wall of the sliding rod is slidably connected with a return spring, and the other side of the return spring is fixedly connected with a sealing gasket, and the outer wall of the sealing gasket is movably connected with a sealing ring.

[0010] Preferably, the inner wall of the adjusting ring is provided with a threaded hole, and the outer wall of the threaded sleeve is provided with external threads, and the adjusting ring and the external threads provided on the outer wall of the threaded sleeve constitute threaded sliding movement.

[0011] Preferably, the fixing ring is fixedly installed at the center position of the connecting pipe body, the sealing ring is movably connected with a first pipe body and a second pipe body at both sides, and the sealing ring constitutes compression expansion movement through the first pipe body and the second pipe body.

[0012] Compared with the prior art, the PVC plastic connecting pipe has the advantages that:

[0013] 1. The extension length of the first pipe body and the second pipe body is positioned through the sealing adjusting structure, then the first pipe body and the second pipe body are inserted into the connecting pipe body, so that the first pipe body and the second pipe body extrude the sealing ring, the sealing of the connection position of the first pipe body and the second pipe body is completed through the compression expansion of the sealing ring, then the first pipe body and the second pipe body are fixed through the threaded sliding of the adjusting ring along the threaded sleeve, and the positioning, sealing and fixing functions are integrated, so that the number of independent components required in the traditional connection mode is reduced, the structure of the pipeline connection is simplified, the possibility of fault points is increased due to the existence of multiple components in the traditional connection mode is solved, the cooperation problem between components is further reduced through the integrated design, and the risk of failure is reduced.

[0014] 2. The sealing gasket and the sealing ring are extruded when the first pipe body and the second pipe body are connected, so that the sealing gasket drives the return spring to compress and adjust the sliding rod, the elastic change of the sliding rod is realized, the sealing gasket and the sealing ring are tightly fitted, the gap between the pipelines changes due to thermal expansion and contraction of the pipeline material with the change of the environmental temperature, the sealing gasket is automatically adjusted in pressure according to the temperature change through the return spring, the sealing effect is ensured not to be affected, and if the pipeline is slightly deformed during installation or use, the return spring adjusting gasket can compensate the deformation through the elasticity thereof, and leakage caused by uneven pipeline is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The whole structure schematic view of the utility model is shown in the figure.

[0016] Figure 2 The side section structure schematic view of the utility model is shown in the figure.

[0017] Figure 3 The connecting structure schematic view of the adjusting ring and the sealing ring of the utility model is shown in the figure.

[0018] Figure 4 The internal structure schematic view of the sealing adjusting structure of the utility model is shown in the figure.

[0019] In the figure: 1, the first pipe body; 2, the connecting ring; 3, the sealing adjusting structure; 301, the limiting ring; 302, the fixed plate; 303, the adjusting groove; 304, the fixed sleeve; 305, the sliding rod; 306, the reset spring; 307, the sealing gasket; 4, the adjusting ring; 5, the friction block; 6, the threaded sleeve; 7, the sealing ring; 8, the connecting pipe body; 9, the fixed ring; 10, the sealing ring; 11, the second pipe body. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-4The utility model provides a technical scheme: a PVC plastic connecting pipe, the outer wall fixed connection of one pipe body 1 has sealing adjustment structure 3, and sealing adjustment structure 3 sets up in the inner wall of connecting ring 2, sealing adjustment structure 3 includes limit ring 301, and limit ring 301's setting is in the inner wall of connecting ring 2, and one side fixed connection of limit ring 301 has fixed plate 302, and the inner wall fixed connection of fixed plate 302 has one pipe body 1, and the length of one pipe body 1 through fixed plate 302 is same with the distance of sealing ring 7 to connecting pipe body 8 center, through the fixed plate 302 of setting, can accurately control the insertion depth of one pipe body 1, ensure that every time installation can reach the prescribed insertion position, avoid the sealing of not good because of insertion depth deficiency or overdeep, and the other side of limit ring 301 is provided with adjusting groove 303, and the inner wall mounting of adjusting groove 303 has fixed sleeve 304, and one side fixed connection of fixed sleeve 304 has slide rod 305, and the other end fixed connection of slide rod 305 has return spring 306, and slide rod 305 forms compression movement with return spring 306 through fixed sleeve 304, through the return spring 306 of setting, can compensate the slight deformation of pipeline during installation or use, keep sealing gasket 307 and the close contact of pipeline end surface, prevent leakage, and the inner wall sliding connection of slide rod 305 has return spring 306 and the other side fixed connection of return spring 306 has sealing gasket 307, and the outer wall movable connection of sealing gasket 307 has sealing ring 7, and the combination of sealing gasket 307 and sealing ring 7 provides double sealing barrier, further improves the sealing performance of connecting place, especially applicable to the pipeline system under high pressure or high temperature environment.

[0022] The utility model discloses a technical scheme: a PVC plastic connecting pipe, the outer wall fixed connection of one pipe body 1 has sealing adjustment structure 3, and sealing adjustment structure 3 sets up in the inner wall of connecting ring 2, sealing adjustment structure 3 includes limit ring 301, and limit ring 301's setting is in the inner wall of connecting ring 2, and one side fixed connection of limit ring 301 has fixed plate 302, and the inner wall fixed connection of fixed plate 302 has one pipe body 1, and the length of one pipe body 1 through fixed plate 302 is same with the distance of sealing ring 7 to connecting pipe body 8 center, through the fixed plate 302 of setting, can accurately control the insertion depth of one pipe body 1, ensure that every time installation can reach the prescribed insertion position, avoid the sealing of not good because of insertion depth deficiency or overdeep, and the other side of limit ring 301 is provided with adjusting groove 303, and the inner wall mounting of adjusting groove 303 has fixed sleeve 304, and one side fixed connection of fixed sleeve 304 has slide rod 305, and the other end fixed connection of slide rod 305 has return spring 306, and slide rod 305 forms compression movement with return spring 306 through fixed sleeve 304, through the return spring 306 of setting, can compensate the slight deformation of pipeline during installation or use, keep sealing gasket 307 and the close contact of pipeline end surface, prevent leakage, and the inner wall sliding connection of slide rod 305 has return spring 306 and the other side fixed connection of return spring 306 has sealing gasket 307, and the outer wall movable connection of sealing gasket 307 has sealing ring 7, and the combination of sealing gasket 307 and sealing ring 7 provides double sealing barrier, further improves the sealing performance of connecting place, especially applicable to the pipeline system under high pressure or high temperature environment.

[0023] Please refer to Figures 1-3The utility model provides a technical scheme: a PVC plastic connecting pipe, the outer wall bearing of connecting ring 2 is connected with adjusting ring 4, the quantity of connecting ring 2 and adjusting ring 4 has two, and two connecting ring 2 and adjusting ring 4 are symmetrically arranged with the vertical line of connecting pipe body 8 as the axis of symmetry, through the adjusting ring 4 and the connecting ring 2 set up, can evenly distribute the stress of pipeline both ends, avoid the pipeline deformation or connection loose caused by unilateral uneven stress, ensure the mechanical stability of the connecting place, and the outer wall of adjusting ring 4 is provided with friction block 5, the inner wall of adjusting ring 4 is connected with threaded sleeve 6, the inner wall of adjusting ring 4 is provided with threaded hole, the outer wall of threaded sleeve 6 is provided with external thread, adjusting ring 4 is formed through threaded hole and the external thread of the outer wall of threaded sleeve 6 and is provided with threaded sliding movement, through the adjusting ring 4 and threaded sleeve 6 set up, adjusting ring 4 can adjust the fastening degree of connection according to actual demand, ensure that pipeline can keep good sealing property and connection strength under different pressure grades, and the inner wall of threaded sleeve 6 is sleeved with sealing ring 7, the other side of threaded sleeve 6 is fixedly connected with connecting pipe body 8, and the inner wall of connecting pipe body 8 is installed with fixed ring 9, the inner wall of fixed ring 9 is installed with sealing ring 10, and the outer wall of sealing ring 10 is movably connected with two pipe body 11, fixed ring 9 is fixedly installed at the center position of connecting pipe body 8, and the two sides of sealing ring 10 are movably connected with one pipe body 1 and two pipe body 11, and sealing ring 10 is formed through one pipe body 1 and two pipe body 11 and is provided with compression expansion movement, through the sealing ring 10 set up, can automatically adjust the sealing pressure according to the actual size and insertion depth of pipeline, ensure that the sealing effect is not influenced by the heat expansion and cold shrinkage of pipeline.

[0024] The utility model discloses a technical scheme: a PVC plastic connecting pipe, the outer wall bearing of connecting ring 2 is connected with adjusting ring 4, the quantity of connecting ring 2 and adjusting ring 4 has two, and two connecting ring 2 and adjusting ring 4 are symmetrically arranged with the vertical line of connecting pipe body 8 as the axis of symmetry, through the adjusting ring 4 and the connecting ring 2 set up, can evenly distribute the stress of pipeline both ends, avoid the pipeline deformation or connection loose caused by unilateral uneven stress, ensure the mechanical stability of the connecting place, and the outer wall of adjusting ring 4 is provided with friction block 5, the inner wall of adjusting ring 4 is connected with threaded sleeve 6, the inner wall of adjusting ring 4 is provided with threaded hole, the outer wall of threaded sleeve 6 is provided with external thread, adjusting ring 4 is formed through threaded hole and the external thread of the outer wall of threaded sleeve 6 and is provided with threaded sliding movement, through the adjusting ring 4 and threaded sleeve 6 set up, adjusting ring 4 can adjust the fastening degree of connection according to actual demand, ensure that pipeline can keep good sealing property and connection strength under different pressure grades, and the inner wall of threaded sleeve 6 is sleeved with sealing ring 7, the other side of threaded sleeve 6 is fixedly connected with connecting pipe body 8, and the inner wall of connecting pipe body 8 is installed with fixed ring 9, the inner wall of fixed ring 9 is installed with sealing ring 10, and the outer wall of sealing ring 10 is movably connected with two pipe body 11, fixed ring 9 is fixedly installed at the center position of connecting pipe body 8, and the two sides of sealing ring 10 are movably connected with one pipe body 1 and two pipe body 11, and sealing ring 10 is formed through one pipe body 1 and two pipe body 11 and is provided with compression expansion movement, through the sealing ring 10 set up, can automatically adjust the sealing pressure according to the actual size and insertion depth of pipeline, ensure that the sealing effect is not influenced by the heat expansion and cold shrinkage of pipeline.

[0025] Working principle: when the PVC plastic connecting pipe is used, first, the connecting pipe body 8 is arranged on the same horizontal line of the first pipe body 1 and the second pipe body 11, then the first pipe body 1 and the second pipe body 11 are respectively inserted into the threaded sleeves 6 fixed on both sides of the connecting pipe body 8, at this time, the first pipe body 1 penetrates the sealing ring 7 and slides along the inner wall of the threaded sleeve 6, then the friction block 5 is rotated to adjust the ring 4, so that the adjusting ring 4 rotates along the outer wall of the connecting ring 2, at this time, the adjusting ring 4 is adjusted through the threaded hole in the inner wall along the external thread arranged on the outer wall of the threaded sleeve 6, so that the adjusting ring 4 drives the first pipe body 1 and the second pipe body 11 to be synchronously adjusted through the connecting ring 2 and the sealing adjusting structure 3.

[0026] When the adjusting ring 4 and the threaded sleeve 6 are about to be completely connected, the first pipe body 1 and the second pipe body 11 are extruded to the sealing ring 10 arranged on the inner wall of the fixed ring 9, so that the sealing ring 10 is expanded under stress, and the sealing of the joint of the first pipe body 1 and the second pipe body 11 is completed.

[0027] Meanwhile, the sealing gasket 307 is in contact with the sealing ring 7, and the first pipe body 1 and the second pipe body 11 extrude the sealing gasket 307 and the sealing ring 7, at this time, the sealing gasket 307 pushes the return spring 306, so that the return spring 306 slides along the fixed sleeve 304, thereby extruding the sliding rod 305, and then the distance between the sealing gasket 307 and the adjusting groove 303 of the limiting ring 301 is changed by the compression adjustment of the sliding rod 305, so as to ensure the tightness between the sealing gasket 307 and the sealing ring 7.

[0028] So that the adjusting ring 4 is tightly sealed at the connection between the sealing adjusting structure 3 and the threaded sleeve 6, then follows the wear of the connection, the sealing gasket 307 is adjusted by the reset of the return spring 306, with the change of the environmental temperature, the pipe material will expand and contract with heat and cold, which will cause the gap between the pipes to change, the sealing gasket 307 can automatically adjust the pressure according to the temperature change by the adjustment of the return spring 306, so as to ensure that the sealing effect is not affected.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PVC plastic connecting pipe, comprising a pipe body (1), characterized in that: The outer wall of the first pipe body (1) is fixedly connected to a sealing adjustment structure (3), and the sealing adjustment structure (3) is set on the inner wall of the connecting ring (2). The outer wall of the connecting ring (2) is connected to an adjustment ring (4), and the outer wall of the adjustment ring (4) is provided with a friction block (5). The inner wall of the adjustment ring (4) is threadedly connected to a threaded sleeve (6), and the inner wall of the threaded sleeve (6) is fitted with a sealing ring (7). The other side of the threaded sleeve (6) is fixedly connected to a connecting pipe body (8), and the inner wall of the connecting pipe body (8) is installed with a fixing ring (9). The inner wall of the fixing ring (9) is installed with a sealing ring (10), and the outer wall of the sealing ring (10) is movably connected to a second pipe body (11).

2. The PVC plastic connecting pipe according to claim 1, characterized in that, There are two connecting rings (2) and adjusting rings (4), and the two connecting rings (2) and adjusting rings (4) are symmetrically arranged with the vertical line of the connecting tube (8) as the axis of symmetry.

3. A PVC plastic connecting pipe according to claim 1, characterized in that, The sealing adjustment structure (3) includes a limiting ring (301), and the limiting ring (301) is disposed on the inner wall of the connecting ring (2). A fixing plate (302) is fixedly connected to one side of the limiting ring (301), and a first tube (1) is fixedly connected to the inner wall of the fixing plate (302). The length of the first tube (1) penetrating the fixing plate (302) is the same as the distance from the sealing ring (7) to the center of the connecting tube (8).

4. A PVC plastic connecting pipe according to claim 3, characterized in that, An adjustment groove (303) is provided on the other side of the limiting ring (301), and a fixing sleeve (304) is installed on the inner wall of the adjustment groove (303). A slide rod (305) is fixedly connected to one side of the fixing sleeve (304), and a return spring (306) is fixedly connected to the other end of the slide rod (305). The slide rod (305) and the return spring (306) form a compression motion through the fixing sleeve (304).

5. A PVC plastic connecting pipe according to claim 4, characterized in that, The inner wall of the slide rod (305) is slidably connected to a return spring (306), and the other side of the return spring (306) is fixedly connected to a sealing gasket (307). The outer wall of the sealing gasket (307) is movably connected to a sealing ring (7).

6. A PVC plastic connecting pipe according to claim 1, characterized in that, The inner wall of the adjusting ring (4) is provided with a threaded hole, and the outer wall of the threaded sleeve (6) is provided with an external thread. The adjusting ring (4) and the external thread on the outer wall of the threaded sleeve (6) form a threaded sliding motion through the threaded hole.

7. A PVC plastic connecting pipe according to claim 1, characterized in that, The fixing ring (9) is fixedly installed at the center of the connecting pipe (8). The sealing ring (10) is movably connected to the first pipe (1) and the second pipe (11) on both sides, and the sealing ring (10) forms a compression and expansion motion through the first pipe (1) and the second pipe (11).

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