CN203099207U

CN203099207U - Pipeline seal plug

Info

Publication number: CN203099207U
Application number: CN 201320126114
Authority: CN
Inventors: 何伟林
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-07-31
Anticipated expiration: 2023-03-19

Abstract

The utility model relates to a pipeline sealing device, in particular to a seal plug, and aims to provide a novel pipeline seal plug, which has the advantages of good sealing property, convenience for use, simple structure and lower cost. The technical scheme of the invention is as follows: the pipeline seal plug is characterized by comprising a tray, a pressure plate, an elastic seal ring and a locking nut, wherein a central rod is vertically formed on the upper end surface of the tray; the pressure plate can be glidingly positioned on the central rod via a slide hole; the elastic seal ring is arranged between the tray and the pressure plate, and has a drum type peripheral surface; and the locking nut is in screw-thread fit with the central rod and enables the elastic seal ring to deform by upward pressing the pressure plate. The axial projection of the elastic seal ring is annular, and the peripheral surface of the elastic seal ring takes the shape of a drum protruding in the outer diameter direction.

Description

The seal for pipe joints plug

Technical field

The utility model relates to a kind of pipeline sealing device, specifically is a kind of sealing plug.

Background technique

When various pipelines such as laying sewer, water inlet, waste pipe or raceway, usually need take interim shutoff measure to carry out seal isolation to pipeline, to prevent that rainwater, silt, toy or various impurity from entering pipe interior and causing line clogging or damage; But existing pipe plugging generally uses wooden unit, iron plate or fragment of brick cement etc. as main material, not only use very inconvenience, and sealability is relatively poor, remains to be improved further.

The model utility content

The purpose of this utility model is the deficiency that overcomes in the above-mentioned background technology, and a kind of novel seal for pipe joints plug is provided, and this seal for pipe joints plug should have good airproof performance, easy to use, simple in structure and lower-cost characteristics.

The technical solution of the utility model is: the seal for pipe joints plug is characterized in that: this seal for pipe joints plug comprise the upper-end surface vertically be shaped on the pallet of a center-pole, by sliding eye be positioned at platen on the center-pole slidably, be arranged between pallet and the platen and circumferential surface be cydariform elastic seal ring, carry out screw-thread fit and force elastic seal ring to produce the locking nut of deformation with center-pole by the roof pressure platen.

The axis projection of described elastic seal ring is a ring, and the circumferential surface of this elastic seal ring is to the outstanding cydariform of external diameter direction.

The circle edge of described pallet and platen is along the tongue and groove that is shaped on respectively with the both sides end face edge tabling of elastic seal ring.

Be shaped on the draw ring that is used for the application of force on the described locking nut.

Described sliding eye is positioned at the central position of pallet.

Be shaped on the stiffening rib of radial arrangement on the end face of described pallet and platen.

Described elastic seal ring is that rubber or soft plastic are made.

The beneficial effects of the utility model are:

1, good seal performance; When using in pipeline, two end faces up and down of elastic seal ring are subjected to the cramping of platen and pallet and deformation take place, and force the circumferential surface of elastic seal ring to bloat and tightly touch inner-walls of duct along the external diameter direction, thereby have reached good sealing effect;

2 is easy to use; The utility model is placed on pipe interior, its external diameter is less than the internal diameter of pipeline, and volume is less and be easy to carry, and tightens locking nut simultaneously and just the utility model can be positioned in the pipeline, and the counterrotating locking nut also can take out the utility model easily, and reusable;

3, simple in structure and cost is lower; The utility model is combined by four parts, and not only structure is comparatively simple, can dismantle easily or assemble, and manufacture cost is also lower.

Description of drawings

Fig. 1 is a main TV structure schematic representation of the present utility model.

Fig. 2 is the main TV structure schematic representation of pallet.

Fig. 3 is the plan structure schematic representation of pallet.

Fig. 4 is the main TV structure schematic representation of platen.

Fig. 5 is the structural representation of looking up of platen.

Fig. 6 is the main TV structure schematic representation of locking nut.

Fig. 7 is the main TV structure schematic representation of elastic seal ring.

Embodiment

Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.

As shown in Figure 1, the seal for pipe joints plug mainly comprises pallet 4, elastic seal ring 3, platen 2 and locking nut 1; Center-pole 5 vertically is formed on the upper-end surface of pallet and the top of center-pole is shaped on screw thread 5-1; The central position of platen is shaped on the sliding eye 2-1 that connects the both sides end face, and platen is positioned on the center-pole by sliding eye and platen can vertically slide along center-pole; The upper-end surface of pallet and the lower end surface of platen are shaped on and are radial arrangement to be used to increase the stiffening rib 7 of structural strength; Locking nut is arranged on the top of platen and top that locking nut is positioned at center-pole, and (locking nut and center-pole carry out screw-thread fit, the internal thread 1-1 of locking nut and the thread engagement of center-pole), be shaped on the draw ring 6 that is used for the application of force on the locking nut simultaneously.

Elastic seal ring is a critical piece of the present utility model, is made by elastic material (being generally rubber or soft plastic), and it is arranged between pallet and the platen and by producing elastic strain and comes closed conduit; As shown in Figure 7, the axis projection of described elastic seal ring is ring (radial thickness is determined as required); The circumferential surface of elastic seal ring bloats (outstanding back forms cydariform) to the external diameter direction, be the external diameter of the external diameter of elastic seal ring intermediate portion greater than the both sides end face area, its circumferential surface can outstanding along the external diameter direction (if do not make this shape, elastic seal ring circumferential surface when being subjected to roof pressure might cave inward and cause and can't seal pipeline the both ends of the surface that this shape helps guaranteeing elastic seal ring) during by roof pressure; As Fig. 2 and shown in Figure 4, circle edge on pallet and the platen is along the tongue and groove that all is shaped on the edge tabling of elastic seal ring both ends of the surface; Wherein the circle edge of pallet is along being shaped on tongue and groove 4-1, the circle edge of platen is along being shaped on down tongue and groove 2-2, the edge of elastic seal ring both sides end face is chimeric with last tongue and groove and following tongue and groove respectively, during use respectively the both ends of the surface of support elastic seal ring inwardly shrink when preventing its deformation.

During use, earlier the utility model is positioned in the pipeline, thereby move by the axis of draw ring rotational lock nut promotion platen along center-pole, platen and pallet are respectively from two ends roof pressure elastic seal ring and make it that deformation take place, elastic seal ring radial direction expansion outward under the axial pressure effect, circumferential surface enlarges markedly, and the circumferential surface of final elastic seal ring tightly is attached on the inner-walls of duct pipeline is sealed fully.

Claims

1. seal for pipe joints plug is characterized in that: this seal for pipe joints plug comprise the upper-end surface vertically be shaped on the pallet of a center-pole (5), by sliding eye (2-1) be positioned at platen (2) on the center-pole slidably, be arranged between pallet and the platen and circumferential surface be cydariform elastic seal ring (3), carry out screw-thread fit and force elastic seal ring to produce the locking nut (1) of deformation with center-pole by the roof pressure platen.

2. seal for pipe joints plug according to claim 1 is characterized in that: the axis projection of described elastic seal ring is a ring, and the circumferential surface of this elastic seal ring is to the outstanding cydariform of external diameter direction.

3. seal for pipe joints plug according to claim 2 is characterized in that: the circle edge of described pallet and platen is along the tongue and groove that is shaped on respectively with the both sides end face edge tabling of elastic seal ring.

4. seal for pipe joints plug according to claim 3 is characterized in that: be shaped on the draw ring (6) that is used for the application of force on the described locking nut.

5. seal for pipe joints plug according to claim 4 is characterized in that: described sliding eye is positioned at the central position of pallet.

6. seal for pipe joints plug according to claim 5 is characterized in that: the stiffening rib (7) that is shaped on radial arrangement on the end face of described pallet and platen.

7. seal for pipe joints plug according to claim 6 is characterized in that: described elastic seal ring is that rubber or soft plastic are made.