Plugging device suitable for municipal embedded water holding pipeline

Abstract

The utility model relates to the technical field of pipeline plugging, in particular to a plugging device suitable for a municipal embedded water holding pipeline. The sealing device has the advantages that the expansion sealing ring and the inner wall of the pipeline body are pressed and sealed, one end of the outer wall of the pipeline body is covered and sealed through the sealing cover, and during sealing, the opening and closing valve is opened, so that the connecting pipe can be opened, and the flow guide conical opening of the pressing conical body is communicated, and the interior of the pipeline body is communicated with the outside; by fixing the connecting pipe and rotating the locking nut at the same time, the pressing conical body is pulled towards the interior of the conical opening, so that the inner water flow can be discharged, the water pressure resistance during plugging installation is reduced, the installation convenience is improved, meanwhile, the opening and closing valve is closed after installation is in place, and the effect of convenient installation is achieved; and the expansion sealing ring expands towards the outer wall, so that the expansion sealing ring presses the inner wall of the pipeline body outwards, and the fastening effect can be greatly improved along with continuous locking.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline plugging technical field, especially a kind of plugging device suitable for municipal pre-buried water retaining pipeline. BACKGROUND

[0002] Municipal pre-buried water retaining pipeline needs to carry out temporary plugging to open pipeline when laying installation, reconstruction or maintenance replacement, to facilitate operation, such as the plugging device suitable for municipal pre-buried water retaining pipeline disclosed in the Chinese utility model patent with publication number CN221121436U, the plugging device suitable for municipal pre-buried water retaining pipeline is installed after being completed, water in pipeline contacts plug, and water pressure in pipeline drives plug and lifting column to move, so that abutting block extrudes abutting plate and rotating rod to rotate, abutting plate drives rotating plate, rotating shaft and extrusion plate to move, so that extrusion plate is supported on the inner wall of pipeline, the position of plugging device is reinforced, and the opening provided on plug is avoided to cause water seepage phenomenon, but the plugging device suitable for municipal pre-buried water retaining pipeline still has the following deficiencies in practical application:

[0003] The plugging device directly uses plug and plugging plate to plug, if there is water flow in pipeline, it is directly plugged into water pressure, and it is difficult to operate when plugging, plug diameter is fixed, it is directly inserted, and the pressing effect of plug and inner wall of pipeline is poor, thereby affecting the effect of plugging. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving at least one of the technical defects.

[0005] Therefore, one purpose of the utility model is to provide a plugging device suitable for municipal pre-buried water retaining pipeline to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a plugging device suitable for municipal pre-buried water retaining pipeline, which comprises a pipeline body, characterized in that: an expansion sealing ring is arranged on the inner wall of the pipeline body close to the fracture, a tapered opening is formed in the middle of the side of the expansion sealing ring close to the inner wall of the pipeline body, a connecting pipe penetrating the expansion sealing ring is inserted into the center of the expansion sealing ring, a pressing tapered body is fixedly connected to one end of the connecting pipe, the tapered surface of the pressing tapered body can be tightly combined with the tapered opening, a flow guide taper opening is formed in the center of the side of the pressing tapered body away from the connecting pipe, the inner wall of the flow guide taper opening is connected with the connecting pipe, an on-off valve is fixedly connected to the side of the connecting pipe away from the pressing tapered body, a sealing cover is covered on the opening of the pipeline body, a locking nut is rotatably connected to the center of the sealing cover, the locking nut is threadedly connected with the outer wall of the connecting pipe, and the expansion sealing ring is made of elastic material.

[0007] Preferably, according to any one of the above schemes, the expansion sealing ring is in interference fit with the pipeline body, the contact surface of the expansion sealing ring and the inner wall of the pipeline body is provided with anti-skid lines, and the size of the compression cone body is matched with the size of the inner wall of the conical opening.

[0008] The anti-skid lines can improve the compression and fixation effect of the expansion sealing ring and the inner wall of the pipeline body, and the taper surface can guide the expansion of the expansion sealing ring.

[0009] Preferably, according to any one of the above schemes, the diameter of the inner wall of the sealing cover is matched with the diameter of the outer wall of the pipeline body, the sealing cover is fixedly connected with a sealing gasket, and the diameter of the sealing gasket is matched with the diameter of the outer wall of the pipeline body.

[0010] The compression of the compression cone body can tighten the sealing cover to the expansion sealing ring, thereby tightly covering the opening of the pipeline body and compressing the opening of the sealing gasket, and the sealing effect is further improved.

[0011] Preferably, according to any one of the above schemes, the outer wall of the connecting pipe is fixedly connected with a holding handle near one end of the opening and closing valve, and the holding handle is in annular structure.

[0012] The annular structure of the holding handle facilitates holding and fixing, and the connecting pipe can be relatively rotated, thereby facilitating the tightening operation.

[0013] Preferably, according to any one of the above schemes, the length of the connecting pipe is greater than the length of the expansion sealing ring, the connecting pipe is in clearance fit with the expansion sealing ring, and the diameter of the side of the conical body away from the connecting pipe is greater than the diameter of the side of the conical opening.

[0014] The connecting pipe can be flexibly moved in the center of the expansion sealing ring, the tightening is smooth, and the diameter of the conical body can maximize the expansion effect of the expansion sealing ring.

[0015] Preferably, according to any one of the above schemes, the thickness of the sealing gasket is less than the depth of the sealing cover, and the center of the sealing gasket is in contact with the outer wall of the connecting pipe.

[0016] The sealing gasket can seal the gap, and the thickness of the sealing gasket can ensure that the cover of the sealing cover covers the opening of one end of the pipeline body, thereby improving the sealing performance.

[0017] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0018] 1. The plugging device suitable for municipal pre-buried water-carrying pipeline, through the expansion sealing ring and the pipe body inner wall compression sealing, through the sealing cover to the pipe body outer wall one end tightly sealed, when plugging, through the opening of the on-off valve, the connecting pipe can be opened, the flow guide cone of the compression cone body is connected, the pipe body inside and the outside are communicated, the internal water flow can be discharged, so as to reduce the water pressure resistance during plugging installation, improve the installation convenience, at the same time, after installation in place, close the on-off valve, achieve the effect of convenient installation.

[0019] 2. The plugging device suitable for municipal pre-buried water-carrying pipeline, through the fixed connecting pipe, and then rotating the locking nut, the compression cone body can be pulled to the inside of the conical opening, so that the expansion sealing ring is expanded to the outer wall through the conical surface guide, and the expansion sealing ring is compressed to the inner wall of the pipe body, and the locking is continuously locked, so that the fastening effect is greatly improved, and the sealing performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the utility model;

[0021] Figure 2 It is a side view structure schematic view of the utility model;

[0022] Figure 3 It is a structure schematic view of the utility model Figure 2 sectional structure schematic view of the utility model.

[0023] In the figure: 1-pipe body, 2-sealing cover, 3-connecting pipe, 4-on-off valve, 5-holding handle, 6-locking nut, 7-expansion sealing ring, 8-conical opening, 9-compression cone body, 10-flow guide cone, 11-sealing gasket. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0025] Example one: as Figures 1 to 3As shown in the sealing device for municipal embedded water holding pipeline, it comprises a pipeline body 1, characterized in that: an expansion sealing ring 7 is arranged on the inner wall of the pipeline body 1 near the fracture, a tapered opening 8 is formed in the middle of the side of the expansion sealing ring 7 close to the inner wall of the pipeline body 1, a connecting pipe 3 penetrating through the expansion sealing ring 7 is inserted into the center of the expansion sealing ring 7, a compression tapered body 9 is fixedly connected to one end of the connecting pipe 3, the taper surface of the compression tapered body 9 can be tightly combined with the tapered opening 8, a flow guide taper opening 10 is formed in the center of the side of the compression tapered body 9 away from the connecting pipe 3, the inner wall of the flow guide taper opening 10 is communicated with the connecting pipe 3, an on-off valve 4 is fixedly connected to the side of the connecting pipe 3 away from the compression tapered body 9, a sealing cover 2 is arranged on the opening of the pipeline body 1, a locking nut 6 is rotatably connected to the center of the sealing cover 2, the locking nut 6 is threadedly connected with the outer wall of the connecting pipe 3, and the expansion sealing ring 7 is made of elastic material.

[0026] As an optional technical scheme of the utility model, the expansion sealing ring 7 is in interference fit with the pipeline body 1, anti-skid lines are formed on the contact surface of the expansion sealing ring 7 and the inner wall of the pipeline body 1, the size of the compression tapered body 9 is matched with the size of the inner wall of the tapered opening 8, the anti-skid lines can improve the compression and fixation effect of the expansion sealing ring 7 and the inner wall of the pipeline body 1, and the taper surface combination can guide the expansion of the expansion sealing ring 7.

[0027] As an optional technical scheme of the utility model, the diameter of the inner wall of the sealing cover 2 is matched with the diameter of the outer wall of the pipeline body 1, a sealing gasket 11 is fixedly connected to the inner wall of the sealing cover 2, the diameter of the sealing gasket 11 is matched with the diameter of the outer wall of the pipeline body 1, the compression of the compression tapered body 9 can also tighten the sealing cover 2 to the expansion sealing ring 7, so as to tightly cover the opening of the pipeline body 1 and compress the opening of the sealing gasket 11, thereby further improving the sealing effect.

[0028] As an optional technical scheme of the utility model, a holding handle 5 is fixedly connected to the outer wall of the connecting pipe 3 near the on-off valve 4, the holding handle 5 is of annular structure, the annular structure of the holding handle 5 facilitates holding and fixation, and the holding handle 5 can be relatively rotated with the connecting pipe 3, thereby facilitating the tightening operation.

[0029] As an optional technical scheme of the utility model, the length of the connecting pipe 3 is greater than the length of the expansion sealing ring 7, the connecting pipe 3 is in clearance fit with the expansion sealing ring 7, the diameter of the side of the compression tapered body 9 away from the connecting pipe 3 is greater than the diameter of the opening side of the tapered opening 8, so that the connecting pipe 3 can be flexibly moved in the center of the expansion sealing ring 7, thereby improving the smoothness of the tightening, and the diameter of the compression tapered body 9 can maximize the expansion effect of the expansion sealing ring 7.

[0030] As an optional technical scheme of the utility model, the thickness of the sealing gasket 11 is less than the depth of the sealing cover 2, and the center of the sealing gasket 11 is attached to the outer wall of the connecting pipe 3, so that the sealing gasket 11 can close the gap, and the thickness of the sealing gasket 11 can ensure that the cover of the sealing cover 2 can cover the opening of the pipeline body 1, thereby improving the sealing performance.

[0031] A sealing device suitable for municipal pre-embedded water holding pipeline, the working principle is as follows:

[0032] 1) First, insert the expansion sealing ring 7 into the inner wall of the pipeline body 1 near the opening, and open the on-off valve 4 at the same time;

[0033] 2) Then fix the connecting pipe 3, and then rotate the locking nut 6, so that the compression conical body 9 is pulled towards the inside of the conical opening 8, so that the expansion sealing ring 7 is expanded towards the outer wall, and the expansion sealing ring 7 is compressed towards the inner wall of the pipeline body 1, and the water flow in the inner wall of the pipeline body 1 can release the water pressure through the connecting pipe 3;

[0034] 3) With continuous locking, the fastening effect can be greatly improved, and the sealing performance is improved at the same time;

[0035] 4) The sealing cover 2 is also tightened towards the expansion sealing ring 7, thereby tightly covering the opening of the pipeline body 1, and the sealing gasket 11 is compressed, further improving the sealing effect, and the on-off valve 4 is closed after sealing.

[0036] In summary, the sealing device suitable for municipal pre-embedded water holding pipeline, through the compression of the expansion sealing ring 7 and the inner wall of the pipeline body 1, the sealing cover 2 tightly seals one end of the outer wall of the pipeline body 1, when sealing, the connecting pipe 3 can be opened by opening the on-off valve 4, the flow guide cone port 10 of the compression conical body 9 is connected, the inside of the pipeline body 1 is connected with the outside, and the water flow inside can be discharged, thereby reducing the water pressure resistance during sealing installation, improving the convenience of installation, and closing the on-off valve 4 after installation, achieving the effect of convenient installation, through the fixing of the connecting pipe 3, and then rotating the locking nut 6, so that the compression conical body 9 is pulled towards the inside of the conical opening 8, so that the expansion sealing ring 7 is expanded towards the outer wall, and the expansion sealing ring 7 is compressed towards the inner wall of the pipeline body 1, and with continuous locking, the fastening effect can be greatly improved, and the sealing performance is improved at the same time.

[0037] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing device suitable for municipal pre-embedded water retaining pipes, comprising a pipe body (1), characterized in that: The inner wall of the pipeline body (1) is provided with an expansion sealing ring (7) near the fracture, a tapered opening (8) is formed in the middle of the side surface of the expansion sealing ring (7) near the inner wall of the pipeline body (1), a connecting pipe (3) penetrating the expansion sealing ring (7) is inserted into the center of the expansion sealing ring (7), one end of the connecting pipe (3) is fixedly connected with a compression tapered body (9), the tapered surface of the compression tapered body (9) can be tightly combined with the tapered opening (8), a flow guide taper mouth (10) is formed in the center of the side surface of the compression tapered body (9) away from the connecting pipe (3), the inner wall of the flow guide taper mouth (10) is in communication with the connecting pipe (3), the connecting pipe (3) is fixedly connected with an on-off valve (4) away from the compression tapered body (9), the opening of the pipeline body (1) is covered with a sealing cover (2), the center of the sealing cover (2) is rotatably connected with a locking nut (6), the locking nut (6) is threadedly connected with the outer wall of the connecting pipe (3), and the expansion sealing ring (7) is made of elastic material.

2. The sealing device for municipal pre-buried water retaining pipe according to claim 1, characterized in that: The expansion sealing ring (7) is in interference fit with the pipeline body (1), the contact surface between the expansion sealing ring (7) and the inner wall of the pipeline body (1) is provided with anti-skid lines, and the size of the compression tapered body (9) is matched with the size of the inner wall of the tapered opening (8).

3. The sealing device for municipal pre-buried water retaining pipe according to claim 2, characterized in that: The diameter of the inner wall of the sealing cover (2) is matched with the diameter of the outer wall of the pipeline body (1), the inner wall of the sealing cover (2) is fixedly connected with a sealing gasket (11), and the diameter of the sealing gasket (11) is matched with the diameter of the outer wall of the pipeline body (1).

4. The sealing device for municipal pre-buried water retaining pipe according to claim 3, characterized in that: The outer wall of the connecting pipe (3) is fixedly connected with a holding handle (5) near one end of the on-off valve (4), and the holding handle (5) is of annular structure.

5. The sealing device for municipal pre-embedded water retaining pipe according to claim 4, characterized in that: The length of the connecting pipe (3) is greater than the length of the expansion sealing ring (7), the connecting pipe (3) is in clearance fit with the expansion sealing ring (7), and the diameter of the side of the tapered body (9) away from the connecting pipe (3) is greater than the diameter of the opening side of the tapered opening (8).

6. The sealing device for municipal pre-buried water retaining pipe according to claim 5, characterized in that: The thickness of the sealing gasket (11) is less than the depth of the sealing cover (2), and the center of the sealing gasket (11) is combined with the outer wall of the connecting pipe (3).

Images