Shearing-resistant high-sealing-performance flange connecting structure

Abstract

The utility model discloses an anti-shearing type high-sealing-performance flange connecting structure which is composed of a blind plate, a sealing ring, a first sealing gasket, a second sealing gasket and a flange. The spline and the spline groove which correspond to each other are distributed on the connecting face of the blind plate and the flange, and the blind plate and the flange have high shear resistance during torsion through embedding of the spline and the spline groove. Meanwhile, a first sealing gasket and a second sealing gasket which are matched with the blind plate spline groove and the flange spline groove are arranged, the first sealing gasket and the second sealing gasket are padded into the corresponding spline grooves, and after the blind plate and the flange are embedded, the connecting face of the blind plate and the flange has sealing performance. Thirdly, blind plate sealing teeth and a blind plate sealing groove are arranged on the blind plate, a sealing ring is sleeved with the blind plate sealing groove, flange sealing teeth are arranged on the flange, and after the blind plate and the flange are embedded, the flange sealing teeth press the sealing ring and are annularly embedded with the blind plate sealing teeth, so that the blind plate and the inner side wall of the flange have vertical sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of flange connection structures applied to cement soil mixing pile machines, in particular to a shear-resistant high-sealing flange connection structure. Background Art

[0002] At present, cement soil mixing piles are widely used in the field of engineering construction. The drill bit and drill rod of the cement soil mixing pile machine are generally connected through a flange. Driven by the power head, the drill bit rotates with the drill rod and cuts the soil. At this time, there is a huge shear force in the flange structure between the drill bit and the drill rod. During construction, the cement slurry needs to enter the drill bit through the drill rod under the action of high pressure and spray out from the drill bit to form a cement soil mixing pile. At this time, the cement slurry is very easy to seep out from the gap of the flange connection structure under the action of high pressure. However, the flange structure currently used to connect the drill bit and drill rod on the market is mainly flat, and its shear resistance is mainly provided by the connecting screw. The shear resistance is general and the sealing is poor. Summary of the invention

[0003] The utility model aims to provide a shear-resistant high-seal flange connection structure in view of the deficiencies in the prior art.

[0004] The utility model provides a shear-resistant high-seal flange connection structure, comprising a blind plate, a sealing ring, a first sealing gasket, a second sealing gasket, and a flange. The characteristic is that the blind plate is provided with a blind plate spline and a blind plate spline groove, and the flange is provided with a flange spline and a flange spline groove, and a complete shear-resistant flange connection structure is formed by matching and engaging the blind plate spline with the flange spline groove, and the blind plate spline groove with the flange spline shape.

[0005] On the basis of the above, the first sealing gasket matches the shape of the blind plate spline groove, and the second sealing gasket matches the shape of the flange spline groove; during assembly, the first sealing gasket is clamped between the blind plate spline groove and the flange spline, and the second sealing gasket is clamped between the flange spline groove and the blind plate spline.

[0006] On the basis of the above, the inner ring of the blind plate is provided with a circle of annular blind plate sealing teeth; a circle of annular blind plate sealing groove is provided close to the outside of the annular blind plate sealing teeth; the sealing ring matches the shape of the blind plate sealing groove, and the sealing ring is assembled in the blind plate sealing groove.

[0007] On the basis of the above, a circle of annular flange sealing teeth is arranged on the inner wall of the flange; during assembly, the flange sealing teeth press the sealing ring and are annularly embedded with the blind plate sealing teeth.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model provides a shear-resistant high-sealing flange connection structure, which, through the engagement of the spline and the spline groove, enables the flange connection structure to have a strong shear resistance during torsion; at the same time, through the sealing gasket arranged between the spline and the spline groove, the sealing performance of the connection surface of the flange connection structure is improved; thirdly, through the mutual matching and engagement between the blind plate sealing teeth, the blind plate sealing groove, the sealing ring, and the flange sealing teeth, the vertical sealing performance of the inner wall of the flange connection structure is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0011] Figure 1 , Figure 2 This is a structural schematic diagram of a shear-resistant high-sealing flange connection structure described in the utility model;

[0012] Figure 3 This is a schematic diagram of the blind plate structure of the flange connection structure of the utility model;

[0013] Figure 4 It is a schematic diagram of a half-section structure of a blind plate of the flange connection structure of the utility model;

[0014] Figure 5 A schematic diagram of the flange structure of the flange connection structure of the utility model;

[0015] Figure 6 A schematic diagram of a half-section structure of a flange of the flange connection structure of the utility model;

[0016] Description of Figure Numbers:

[0017] Blind plate 1, sealing ring 2, first sealing gasket 3, second sealing gasket 4, flange 5, blind plate screw hole 101, blind plate spline 102, blind plate spline groove 103, blind plate sealing tooth 104, blind plate sealing groove 105, flange screw hole 501, flange spline groove 502, flange spline 503, flange sealing tooth 504.

[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] The utility model provides a shear-resistant high-seal flange connection structure, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The utility model includes a blind plate 1, a sealing ring 2, a first sealing gasket 3, a second sealing gasket 4, and a flange 5. The blind plate 1 is provided with a blind plate screw hole 101, a blind plate spline 102, a blind plate spline groove 103, a blind plate sealing tooth 104, and a blind plate sealing groove 105. The flange 5 is provided with a flange screw hole 501, a flange spline groove 502, a flange spline 503, and a flange sealing tooth 504.

[0022] Reference Figure 1 , Figure 2 The installation method of the first embodiment of the utility model is as follows:

[0023] The sealing ring 2 is inserted into the blind plate sealing groove 105 of the blind plate 1;

[0024] The first sealing gasket 3 is inserted into the blind plate spline groove 103 of the blind plate 1;

[0025] The second sealing gasket 4 is inserted into the flange key groove 502 of the flange 5;

[0026] The blind plate spline 102 on the blind plate 1 and the flange spline groove 502 on the flange 5 are correspondingly engaged, and the blind plate spline groove 103 on the blind plate 1 and the flange spline 503 on the flange 5 are also correspondingly engaged, so as to form a complete flange structure.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The implementation steps of the first embodiment of the present invention are as follows:

[0028] A blind plate spline 102 and a blind plate spline groove 103 are arranged on the outer ring of the blind plate 1, the blind plate spline 102 is protruding, and the blind plate spline groove 103 is recessed; a flange orchid groove 502 and a flange orchid groove 503 are arranged on the flange 5, the flange orchid groove 502 is recessed, and the flange orchid groove 503 is protruding; the blind plate spline 102 and the flange orchid groove 502, as well as the blind plate spline groove 103 and the flange orchid groove 503 are matched and embedded in shape; when the blind plate and the flange are embedded, the splines and spline grooves that are embedded with each other provide strong shear resistance.

[0029] At the same time, a first and second flexible sealing gasket is provided to match the spline groove of the blind plate and the spline groove of the flange. The first and second sealing gaskets are inserted into the corresponding spline grooves. After the blind plate and the flange are engaged, the sealing gasket on the connecting surface of the blind plate and the flange is squeezed to fill the gap on the connecting surface, so that the connecting surface has a certain degree of sealing.

[0030] At the same time, a circle of annular blind plate sealing teeth 104 is arranged on the inner circle of the blind plate 1, and a circle of annular blind plate sealing grooves 105 are arranged on the outer side of the blind plate sealing teeth 104, and the flexible sealing ring 2 is inserted into the blind plate sealing groove 105; a circle of annular flange sealing teeth 504 is arranged on the inner wall of the flange, and after the blind plate is engaged with the flange, the flange sealing teeth 504 press the sealing ring 2 and are engaged with the blind plate sealing teeth 104 in an annular manner, so that the inner wall of the flange connection structure forms a vertical sealing function, thereby further improving the sealing performance of the flange structure.

Claims

1. A shear-resistant high-seal flange connection structure, characterized in that: It includes a blind plate, a sealing ring, a first sealing gasket, a second sealing gasket and a flange; the blind plate is provided with a blind plate spline, a blind plate spline groove, an annular blind plate sealing tooth and an annular blind plate sealing groove; the flange is provided with a flange orchid key, a flange orchid key groove and annular flange sealing teeth; a complete shear-resistant flange connection structure is formed by matching and inlaying the blind plate spline with the flange orchid key groove, and the blind plate spline groove with the flange orchid key shape.

2. A shear-resistant high-seal flange connection structure as claimed in claim 1, characterized in that: The first sealing gasket matches the shape of the blind plate spline groove; during assembly, the first sealing gasket is clamped between the blind plate spline groove and the flange spline.

3. A shear-resistant high-seal flange connection structure as claimed in claim 1, characterized in that: The second sealing gasket matches the shape of the flange keyway; during assembly, the second sealing gasket is clamped between the flange keyway and the blind plate spline.

4. A shear-resistant high-seal flange connection structure as claimed in claim 1, characterized in that: The inner ring of the blind plate is provided with a circle of annular blind plate sealing teeth.

5. The shear-resistant high-seal flange connection structure according to claim 1, characterized in that: A circle of annular blind plate sealing groove is arranged close to the outer side of the annular blind plate sealing tooth.

6. A shear-resistant high-seal flange connection structure as claimed in claim 1, characterized in that: The sealing ring matches the shape of the blind plate sealing groove, and the sealing ring is assembled in the blind plate sealing groove.

7. A shear-resistant high-seal flange connection structure as claimed in claim 1, characterized in that: The inner wall of the flange is provided with a circle of annular flange sealing teeth; during assembly, the flange sealing teeth press the sealing ring and are annularly embedded with the blind plate sealing teeth.

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