CN206347253U - It is a kind of to strengthen the sealing gaskets of Hafu joint of sealing - Google Patents

Abstract

The utility model relates to a Huff joint sealing pad with enhanced sealing performance. There are two sealing pads, and the two sealing pads are embedded in the installation grooves on the end faces of two oppositely installed semi-circular arc shells one by one. , each gasket includes two semi-arc strips and two straight strips, the two semi-arc strips are arranged in parallel, the two straight strips are respectively located outside the two semi-arc strips, and one end of each straight strip is respectively At the position connecting the opening end of a semi-circular arc bar, the inner side wall of the semi-circular arc bar is provided with a tooth-shaped protrusion, and the protrusion is in the shape of an isosceles triangle or an isosceles trapezoid. The beneficial effect of the utility model is: it is suitable for plugging of pipelines with large changes in outer diameter, greatly increases the sealing performance of the half joint, prevents leakage, and simultaneously improves the strength of the sealing gasket.

Description

A kind of Haff joint sealing gasket with enhanced sealing performance

technical field

The utility model relates to the field of pipeline plugging, in particular to a half joint sealing pad with enhanced sealing performance.

Background technique

As shown in Figure 1, the half-joint is a commonly used pipe leak stopper. The existing half-joint shell includes two semi-cylindrical shells installed up and down oppositely at the leaking place of the pipeline. Mounting grooves for embedding sealing pads are respectively provided on the opposite end faces. The existing gasket includes two semi-arc strips and two straight strips, the two semi-arc strips are arranged in parallel, the two straight strips are respectively located outside the two semi-arc strips, and one end of each straight strip is respectively Where the open end of a half-arc bar is attached. The structural sealing performance of the above-mentioned sealing gasket is not good, which is easy to cause leakage.

Utility model content

To sum up, in order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a half joint sealing gasket with enhanced sealing performance.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a half-arc gasket with enhanced airtightness, which has two gaskets, and the two gaskets are embedded in two oppositely installed semicircular arcs one by one. In the installation groove on the end face of the shell, each gasket includes two semi-circular arc strips and two straight strips, the two semi-circular arc strips are arranged in parallel, and the two straight strips are respectively located outside the two semi-circular arc strips. And one end of each straight bar is respectively connected to the position of the opening end of a semi-circular arc bar, and the inner side wall of the semi-circular arc bar is provided with a tooth-shaped protrusion, and the protrusion is in the shape of an isosceles triangle Or an isosceles trapezoidal shape.

The beneficial effect of the utility model is: it is suitable for plugging pipelines with large changes in outer diameter, greatly increases the sealing performance of the half joint, prevents leakage, and simultaneously improves the strength of the sealing gasket.

On the basis of the above-mentioned technical scheme, the utility model can also be further improved as follows:

Further, the bottom of the installation groove on the end surface of the semi-arc shell is provided with a protruding block, and the outer side wall of the semi-arc bar is provided with a slot for engaging the block.

The beneficial effect of adopting the above-mentioned further technical solution is: the pressure of the gasket is doubled compared with the national standard, preventing the gasket from being washed away from the shell due to excessive pressure, and effectively realizing the plugging of the pipeline .

Further, a step is provided on the side of the straight bar away from the semicircular arc bar.

Further, a square bump is provided at the middle position on the straight bar, and the bump and the straight bar are in a "T" shape and a reverse "L" shape.

The beneficial effects of adopting the above further technical solution are: increasing the contact area between the sealing pad and the semicircular arc housing, improving the sealing effect, and effectively preventing the sliding of the sealing pad.

Description of drawings

Figure 1 is a schematic diagram of the Huff section installed in the pipeline;

Fig. 2 is the front view of gasket;

Fig. 3 is the first embodiment of the A enlarged view of Fig. 2;

Fig. 4 is the second embodiment of the A enlarged view of Fig. 2;

Fig. 5 is the second embodiment of the A enlarged view of Fig. 2;

Figure 6 is a top view of the gasket;

Fig. 7 is the B-B sectional view of Fig. 6;

Fig. 8 is a schematic diagram of a protrusion in the prior art;

Fig. 9 is the first embodiment of the enlarged view of c in Fig. 7;

Fig. 10 is the second embodiment of the c enlarged view of Fig. 7;

Fig. 11 is a three-dimensional diagram of a socket half festival;

Fig. 12 is the front view of the gasket on the socket half joint;

Figure 13 is a top view of Figure 12;

FIG. 14 is a side view of FIG. 12 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Semi-arc shell, 2. Semi-arc bar, 3. Straight bar, 4. Protrusion, 5. Card slot, 6. Pipe, 7. Protrusion.

detailed description

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

A half-joint sealing gasket with enhanced sealing performance, the sealing gasket has two, and the two sealing gaskets are embedded in the installation grooves on the end faces of two oppositely installed semi-circular arc housings 1, each The gasket includes two semicircular arc strips 2 and two straight strips 3, the two semicircular arc strips 2 are arranged in parallel, the two straight strips 3 are respectively located outside the two semicircular arc strips 2, and each straight strip 3 One end of each is respectively connected to the position of the opening end of a semi-circular arc bar 2 . As shown in Figures 6 and 7, the inner side wall of the semicircular arc bar 2 is provided with a protrusion 4 with a toothed structure, and the protrusion 4 can have the following two structures: the first one, as shown in Figure 9, the protrusion 4 The protrusion 4 is in the shape of an isosceles triangle; in the second type, as shown in FIG. 10 , the protrusion 4 is in the shape of an isosceles trapezoid. Compared with the protrusions in the prior art (as shown in Figure 8), the above two structures are suitable for the plugging of pipelines with large changes in outer diameter, which greatly increases the sealing performance of the half joint, prevents leakage, and improves the strength of the gasket.

As shown in FIG. 2 , the bottom of the installation groove on the end surface of the semi-arc housing 1 is provided with a protruding block, and the outer wall of the semi-arc bar 2 is provided with a slot 5 for engaging the block. After the clamping block is engaged with the clamping groove 5, the pressure on the gasket is doubled compared with the national standard, preventing the gasket from being washed away from the casing due to excessive pressure, and effectively realizing the plugging of the pipeline .

The straight bar 3 can have the following two structures: as shown in Figure 3-5, the first one, the side of the straight bar 3 away from the semi-arc bar 2 is provided with a step; the second one, the straight bar 3 A square bump 7 is provided at the upper middle position, and the bump 7 and the straight bar 3 are in a "T" shape and a reverse "L" shape. Compared with the cross-section of the prior art, the above two structures are rectangular straight bars, which increase the contact area between the gasket and the semi-arc shell, improve the sealing effect, and effectively prevent the gasket from sliding.

As shown in Figure 11, it is a socket half joint, that is, a half joint with unequal radial dimensions, and Figures 12-14 are three views of the gasket corresponding to the socket half joint. The sealing gasket described in the utility model can also be used for socketing half joints after being adjusted accordingly.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A Huff joint gasket with enhanced sealing performance, the gasket has two, and the two gaskets are embedded in the installation grooves on the end faces of the two oppositely installed semi-circular arc shells (1) in one-to-one correspondence Inside, each gasket includes two semicircle strips (2) and two straight strips (3), the two semicircle strips (2) are arranged in parallel, and the two straight strips (3) are respectively in two semicircles The outer side of the arc bar (2), and one end of each straight bar (3) is respectively connected to the opening end of a semi-circular arc bar (2), characterized in that the inner side of the semi-circular arc bar (2) Protrusions (4) with a toothed structure are arranged on the wall, and the protrusions (4) are in the shape of an isosceles triangle or an isosceles trapezoid. 2. The half-arc gasket according to claim 1, characterized in that, the bottom of the installation groove on the end face of the semi-arc housing (1) is provided with a protruding block, and the semi-arc bar (2) The outer wall is provided with a slot (5) for snapping into the block. 3. The Haff joint sealing gasket according to claim 1 or 2, characterized in that, a step is provided on the side of the straight strip (3) away from the semicircular arc strip (2). 4. The Huff joint gasket according to claim 1 or 2, characterized in that, a square bump (7) is provided at the middle position on the straight strip, and the bump (7) is in contact with the straight strip (3) The "T" shape and the positive and negative "L shape".