Sealing device for joint of plastic pipe and steel pipe

Abstract

The utility model relates to the technical field of water pipe seepage prevention, and discloses a plastic pipe and steel pipe joint sealing device which comprises a vertical plastic pipe, the outer side of the vertical plastic pipe is connected with a first connecting pipe in a sliding mode, the outer side of the first connecting pipe is connected with a tightening mechanism in a sliding mode, and the tightening mechanism comprises a hoop body. A fixing frame is fixedly connected to one end of the hoop body, a lantern ring is fixedly connected to the outer side of the fixing frame, a bolt is rotatably connected to the inner side of the lantern ring, and a fixing assembly is slidably connected to the outer side of the bolt. According to the utility model, the hoop body is taken up to be mounted around the outer sides of the connecting pipe I and the connecting pipe II, and key tightening can be completed only by enabling the fixing frame to correspond to the lantern ring in position and then penetrating the bolt to rotate, so that the engineering efficiency is improved, and the connecting part is effectively prevented from loosening and displacing due to external forces such as water flow impact and pipeline vibration; and long-term reliability of the sealing structure is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water pipe anti -infiltration especially relates to plastic pipe and steel pipe junction sealing device. BACKGROUND

[0002] In daily life, in today's industrial and civil pipeline systems, plastic pipes and steel pipes are widely used due to their respective unique advantages. When connecting these two types of pipes, sealing problems often arise, so plastic pipe and steel pipe junction sealing device is needed.

[0003] In engineering practice, in order to ensure the sealing performance of plastic pipe and steel pipe connection, the method of sealing glue is usually used for sealing treatment. This sealing method is widely used at room temperature and in ordinary environmental conditions.

[0004] In the prior art, the method of sealing glue can still be used in ordinary environment at room temperature, but it is easy to leak in the vertical pipeline connection with water, and the service life is relatively short, usually about one year. Therefore, plastic pipe and steel pipe junction sealing device is proposed to solve the above problems. INVENTION CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides plastic pipe and steel pipe junction sealing device, aiming at improving the leakage problem of part of the device in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: plastic pipe and steel pipe junction sealing device, including vertical plastic pipe, the outer side of the vertical plastic pipe is slidably connected with connecting pipe one, the outer side of the connecting pipe one is slidably connected with tightening mechanism, the inner side of the connecting pipe one is fixedly connected with sealing mechanism, the inner side of the sealing mechanism is slidably connected with horizontal water storage steel pipe, the tightening mechanism includes hoop body, the inner side of the hoop body is slidably connected with the outer side of the connecting pipe one, one end of the hoop body is fixedly connected with fixed frame, the outer side of the fixed frame is fixedly connected with sleeve ring, the inner side of the sleeve ring is rotatably connected with bolt, the outer side of the bolt is slidably connected with fixed assembly;

[0007] As a further description of the above technical scheme: the fixed assembly includes fixed ring, the inner side of the fixed ring is slidably connected with the outer side of the bolt, the inner side of the fixed ring is fixedly connected with one end of the sleeve ring;

[0008] As a further description of the above technical scheme: the outer side of the bolt is slidably connected with the inner side of the fixed frame, the clamping piece of the fixed frame is slidably connected with the outer side of the sleeve ring;

[0009] As a further description of the above technical solutions: the sealing mechanism includes a sealing ring, the outer side of the sealing ring is fixedly connected to the inner side of the connecting pipe one, and a sealing rubber layer is arranged at the connection between the connecting pipe one and the vertical plastic pipe;

[0010] As a further description of the above technical solutions: the bottom of the connecting pipe one is fixedly connected with a sealing capsule, and the bottom side of the sealing capsule is fixedly connected with a connecting pipe two;

[0011] As a further description of the above technical solutions: the inner side of the connecting pipe two is fixedly connected with a sealing strip, and the outer side of the sealing strip is slidingly connected to the inner side of the horizontal water storage steel pipe.

[0012] The utility model has the advantages of the following beneficial effects:

[0013] 1. In the utility model, the hoop is lifted to be installed around the outer sides of the connecting pipe one and the connecting pipe two, the fixed frame is corresponded with the sleeve ring position, and then the bolt is inserted to preliminarily build the key tightening mechanism, compared with the traditional process such as complex welding and flange connection, professional skill training is not needed, and ordinary workers can quickly complete the operation, the construction period is significantly shortened, the engineering efficiency is improved, the loosening and displacement of the connection part due to water flow impact, pipeline vibration and other external force are prevented, and the long-term reliability of the sealing structure is ensured.

[0014] 2. In the utility model, the sealing ring connecting pipe sealing capsule is used as a flexible sealing barrier, can adapt to different pipe diameter tolerances and the slight deformation of the connection part, further strengthens the sealing effect, the sealing strip is closely attached to the inner wall of the horizontal water storage steel pipe, the potential gap between the steel pipe and the connecting pipe is sealed accurately, the whole connection area is ensured to have no leakage dead angle, the sealing of the connecting part of the plastic pipe and the steel pipe can be durable and durable, the performance of long-term water leakage is achieved, the accidents caused by water leakage in the factory building are effectively avoided, the maintenance cost is effectively controlled and saved, and the cost-saving effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic view of the sealing device for the connecting part of the plastic pipe and the steel pipe provided by the utility model;

[0016] Figure 2 It is a structural schematic view of the connecting pipe one of the sealing device for the connecting part of the plastic pipe and the steel pipe provided by the utility model;

[0017] Figure 3 It is a structural schematic view of the sealing capsule of the sealing device for the connecting part of the plastic pipe and the steel pipe provided by the utility model;

[0018] Figure 4 It is a structural schematic view of the hoop of the sealing device for the connecting part of the plastic pipe and the steel pipe provided by the utility model.

[0019] Legend:

[0020] 1, vertical plastic pipe; 2, connecting pipe one; 3, sealing capsule; 4, sleeve ring; 5, horizontal water containing steel pipe; 6, sealing glue layer; 7, sealing ring; 8, hoop body; 9, sealing strip; 10, connecting pipe two; 11, fixed frame; 12, bolt; 13, fixed ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Reference Figure 1 , Figure 2 , Figure 4 An embodiment provided by the utility model: a sealing device for the connecting part of plastic pipe and steel pipe, comprising a vertical plastic pipe 1, a connecting pipe one 2 is slidably connected to the outer side of the vertical plastic pipe 1, the sliding connection of the vertical plastic pipe 1 and the connecting pipe one 2 facilitates the assembly of the device, the outer side of the connecting pipe one 2 is slidably connected with a tightening mechanism, the connecting pipe one 2 is used for sliding fit with the vertical plastic pipe 1, so as to avoid the damage of the pipeline caused by stress concentration due to material difference, the inner side of the connecting pipe one 2 is fixedly connected with a sealing mechanism, the inner side of the sealing mechanism is slidably connected with a horizontal water containing steel pipe 5;

[0023] The tightening mechanism comprises a hoop body 8, the inner side of the hoop body 8 is slidably connected to the outer side of the connecting pipe one 2, the hoop body 8 is annular structure, closely fits the outer side of the connecting pipe one 2, the material thereof has sufficient strength and toughness, can withstand a large tightening force without deformation, uniformly exerts radial pressure on the connecting pipe one 2 through its contraction, promotes the compression of the connecting part of the pipeline, one end of the hoop body 8 is fixedly connected with a fixed frame 11, the outer side of the fixed frame 11 is fixedly connected with a sleeve ring 4, the inner side of the sleeve ring 4 is rotatably connected with a bolt 12, the bolt 12 is used for realizing axial displacement through thread rotation, the fixed frame 11 enhances the stability of the hoop body 8 at the connecting part, the fastening force of the bolt 12 is transmitted to the hoop body 8, the outer side of the bolt 12 is slidably connected with a fixed assembly;

[0024] The fixed assembly comprises a fixed ring 13, the inner side of the fixed ring 13 is slidably connected to the outer side of the bolt 12, the inner side of the fixed ring 13 is fixedly connected to one end of the sleeve ring 4, the outer side of the bolt 12 is slidably connected to the inner side of the fixed frame 11, the fixed ring 13 is used to limit the axial escape of the bolt 12, and the bolt 12 is always in the correct position during the tightening operation and the subsequent pipeline operation, the buckle piece of the fixed frame 11 is slidably connected to the outer side of the sleeve ring 4, and the sleeve ring 4 is used to guide the movement direction of the bolt 12, so that the fastening force is applied to the hoop body 8.

[0025] Referring to Figures 1 to 3 The sealing mechanism comprises a sealing ring 7, the outer side of the sealing ring 7 is fixedly connected to the inner side of the connecting pipe 1, the connecting pipe 1 and the vertical plastic pipe 1 are provided with a sealing glue layer 6 at the connecting position, the sealing glue layer 6 is used to fill the micro cracks by using its adhesion and sealing performance, the sealing ring 7 is used to have good elasticity and filling property, such as rubber or silicone, the sealing ring 7 is used to fill the initial radial gap between the connecting pipe 1 and the horizontal water storage steel pipe 5, and the sealing ring 7 is used to block the leakage of the medium when the pipeline is not under pressure or only has slight pressure, so as to lay a foundation for subsequent sealing measures and be the first barrier of sealing, the bottom of the connecting pipe 1 is fixedly connected with a sealing capsule 3, the sealing capsule 3 has a flexible characteristic as a whole and can adapt to irregular deformation in the pipeline connection process, when the pipeline system bears pressure, temperature change or vibration, the sealing capsule 3 can adjust the sealing state by elastic deformation, further fill the possible gap and ensure that the sealing effect is not affected, the bottom side of the sealing capsule 3 is fixedly connected with a connecting pipe 2, the connecting pipe 2 guides the sealing strip 9 to be connected with the horizontal water storage steel pipe 5, the inner side of the connecting pipe 2 is fixedly connected with the sealing strip 9, the sealing strip 9 usually has a low friction coefficient and good sealing performance, and the sealing strip 9 continuously adheres to the inner wall of the steel pipe during the pipeline operation, and the outer side of the sealing strip 9 is slidably connected to the horizontal water storage steel pipe 5, so that the sealing performance is better.

[0026] Working principle: the hoop body 8 surrounds the outer sides of the connecting pipe 1 and the connecting pipe 2 until the fixed frame 11 at one end of the hoop body 8 corresponds to the position of the sleeve ring 4, the bolt 12 is connected through the sleeve ring 4, the inner side of the fixed frame 11 is touched to make the hoop body 8 tighten, and the fixed ring 13 is slid to limit the axial movement of the bolt 12, so that the bolt 12 is prevented from escaping during the fastening process, and the reliability of the tightening mechanism is ensured.

[0027] The sealing ring 7 is fixedly connected to the inner side of the first connecting pipe 2, and as the first connecting pipe 2 is sleeved into the vertical plastic pipe 1, the sealing ring 7 is naturally positioned, which preliminarily fills the radial gap between the first connecting pipe 2 and the sealing capsule 3, blocks most of the possible leakage paths of liquid or gas, uniformly applies the sealing glue layer 6 at the joint between the first connecting pipe 2 and the vertical plastic pipe 1, further seals the micro cracks by using the adhesion and filling property of the sealing glue, strengthens the sealing effect at the joint, prevents water leakage at the joint, aligns the second connecting pipe 10 connected with the sealing capsule 3 with the pipe opening of the horizontal water storage steel pipe 5, slowly pushes the first connecting pipe 2, and inserts the horizontal water storage steel pipe 5 into the inner side of the second connecting pipe 10 until the sealing strip 9 is in close contact with the inner side wall of the horizontal water storage steel pipe 5, thereby achieving the sealing effect.

[0028] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A sealing device for the connection between a plastic pipe and a steel pipe, comprising a vertical plastic pipe (1), characterized in that: The outer side of the vertical plastic pipe (1) is slidably connected with a connecting pipe one (2), the outer side of the connecting pipe one (2) is slidably connected with a tightening mechanism, the inner side of the connecting pipe one (2) is fixedly connected with a sealing mechanism, the inner side of the sealing mechanism is slidably connected with a horizontal water storage steel pipe (5); The tightening mechanism comprises a hoop body (8), the inner side of the hoop body (8) is slidably connected with the outer side of the connecting pipe one (2), one end of the hoop body (8) is fixedly connected with a fixed frame (11), the outer side of the fixed frame (11) is fixedly connected with a thimble (4), the inner side of the thimble (4) is rotatably connected with a bolt (12), the outer side of the bolt (12) is slidably connected with a fixed assembly.

2. The sealing device for the connection between a plastic pipe and a steel pipe according to claim 1, characterized in that: The fixed assembly comprises a fixed ring (13), the inner side of the fixed ring (13) is slidably connected with the outer side of the bolt (12), and the inner side of the fixed ring (13) is fixedly connected with one end of the thimble (4).

3. The sealing device for the connection between a plastic pipe and a steel pipe according to claim 2, characterized in that: The outer side of the bolt (12) is slidably connected with the inner side of the fixed frame (11) protruding flange piece outside, and the buckle piece of the fixed frame (11) is slidably connected with the outer side of the thimble (4).

4. The sealing device for the connection between a plastic pipe and a steel pipe according to claim 1, characterized in that: The sealing mechanism comprises a sealing ring (7), the outer side of the sealing ring (7) is fixedly connected with the inner side of the connecting pipe one (2), and a sealing rubber layer (6) is arranged at the connecting position of the connecting pipe one (2) and the vertical plastic pipe (1).

5. The sealing device for the connection between a plastic pipe and a steel pipe according to claim 4, characterized in that: The bottom of the connecting pipe one (2) is fixedly connected with a sealing capsule (3), and the bottom side of the sealing capsule (3) is fixedly connected with a connecting pipe two (10).

6. The sealing device for the connection between a plastic pipe and a steel pipe according to claim 5, characterized in that: The inner side of the connecting pipe two (10) is fixedly connected with a sealing strip (9), and the outer side of the sealing strip (9) is slidably connected with the inner side of the horizontal water storage steel pipe (5).

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