CN217714130U - Flange blind plate and drain pipe - Google Patents

Abstract

The utility model discloses a flange blind plate and a drain pipe, aiming at solving the technical problem that when the existing flange blind plate is connected and sealed with a pipeline port, a sealing ring is easy to deviate and the sealing is not tight; comprises a chassis, a circular bulge correspondingly arranged on the chassis and a connecting pipe; the annular bulge comprises a sealing bulge and a connecting bulge, the end face of the sealing bulge, which is far away from the chassis, forms a sealing surface, and an annular sealing groove is formed between the sealing bulge and the connecting bulge; the utility model discloses enable quick, accurate spacing of sealing washer in the annular seal groove, the off tracking is difficult for appearing, has promoted the leakproofness of flange blind plate.

Description

Flange blind plate and drain pipe

Technical Field

The utility model relates to a water supply and drainage pipeline technical field, concretely relates to flange blind plate and drain pipe.

Background

The flange blind plate is also called a blind flange, is just called a flange cover, is a flange without holes in the middle, and is a connection form of the flange for sealing a pipeline plug. In the industries of petroleum, chemical engineering, metallurgy, electric power, ships, machinery and the like, the flange blind plate plays the roles of isolating and cutting off pipelines, and has the same roles as a seal head, a pipe cap and a welding plug. The flange blind plate seal is a detachable sealing structure, and the seal of the seal head is generally difficult to be opened conveniently. The flange blind plate has good sealing performance, so that the flange blind plate can be generally used as a reliable isolating means for a water supply and drainage system needing complete isolation.

The flange blind plate (application number 201110253208.0) known by the inventor comprises a base plate which is uniformly provided with a plurality of through holes, and a stainless steel plug is fixedly connected to the center of the base plate; the corrosion resistance of the flange is enhanced by fixing the plug made of carbon steel on the chassis, and the strength requirement of the flange blind plate is met.

However, in the process of implementing the technical solution in the embodiment of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems: because the sealing performance between the blind flange and the pipeline needs to be ensured during assembly, a sealing gasket is usually fixed on a sealing surface, but the sealing surface of the blind flange is planar, and the blind flange and the sealing gasket are of a mutually separated structure, so that the sealing gasket is difficult to be conveniently installed in place.

The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

In view of at least one of the above technical problems, the present disclosure provides a flange blank and a drain pipe.

According to an aspect of the disclosure, a flange blind plate is provided, which comprises a chassis, wherein a plurality of connecting holes are formed in the chassis, a circular protrusion is correspondingly arranged on the chassis and comprises a sealing protrusion and a connecting protrusion, the sealing protrusion is far away from the end surface of the chassis to form a sealing surface, an annular sealing groove is formed between the sealing protrusion and the connecting protrusion, and a sealing ring is arranged in the annular sealing groove.

In some embodiments of the present disclosure, an outer sidewall of the annular seal groove is disposed at an acute angle to the seal surface.

In some embodiments of the present disclosure, the four corners of the bottom plate are rounded.

According to one aspect of the disclosure, a drain pipe is provided, which comprises the flange blind plate and the connecting pipe; and a flange is arranged at one end of the connecting pipe and is correspondingly matched with the flange blind plate, so that the flange blind plate is correspondingly arranged on the connecting pipe.

In some embodiments of the present disclosure, the connecting pipe and the flange blind plate are both FRPP material pieces.

One or more technical solutions provided in the embodiments of the present application have at least any one of the following technical effects or advantages:

because two circular ring-shaped protrusions are arranged on the chassis to form the circular ring-shaped sealing groove, and the side wall of the circular ring-shaped sealing groove and the sealing protrusions are arranged at an acute angle, the technical problem that sealing is not tight or sealing fails due to the fact that a sealing rubber ring is prone to deviation when a flange blind plate is connected with a pipeline port is effectively solved, and therefore the sealing rubber ring is rapidly installed and positioned, and the waterproof sealing performance and the safety of the pipeline port are improved.

Drawings

Fig. 1 is a schematic structural diagram of a flange blind plate in an embodiment of the present application.

Fig. 2 is a partial cross-sectional structural schematic view of a flange blank in an embodiment of the present application.

Fig. 3 is a schematic view of an exploded structure of a drain pipe according to another embodiment of the present application.

In the above figures, 1, a chassis; 2. sealing the protrusion; 3. a connecting projection; 4. an annular seal groove; 6. a connecting pipe; 7. a flange; α, acute angle.

Detailed Description

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. References in this application to "first," "second," etc. are used to distinguish between the objects described and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application includes both direct and indirect connections (couplings), unless otherwise specified.

The embodiment of the application provides a flange blind plate and a drain pipe, and solves the technical problem that a sealing ring is not easy to install in place when the flange blind plate is connected with a pipeline in the prior art, so that the sealing effect is poor.

In order to solve the problem of crosstalk, the technical scheme in the embodiment of the present application has the following general idea:

the two circular bulges are arranged on the chassis and comprise the sealing bulges and the connecting bulges, the height of the sealing bulges is smaller than that of the connecting bulges, the end face, away from the chassis, of each sealing bulge is a sealing face, a sealing groove is formed between each sealing bulge and each connecting bulge, and an included angle between one side wall of each sealing groove and each sealing bulge is an acute angle, so that the sealing rubber ring is convenient to install in place when being installed, and good sealing performance is formed.

For better understanding of the technical solutions of the present application, the technical solutions will be described in detail below with reference to the drawings and specific embodiments.

Example one

The embodiment discloses a flange blind plate, which is shown in fig. 1 to 2, and comprises a chassis 1, wherein corresponding connecting holes are respectively arranged at four corners of the chassis 1 and are used for being matched and connected with flanges 7 corresponding to pipeline ports, and chamfering structural processing is also carried out at the four corners of the chassis 1, so that potential safety hazards to operators caused by right-angled structures at the corners of the chassis 1 are avoided.

Use the central point of chassis 1 to set up two ring shape archs respectively as the centre of a circle on chassis 1, including sealed arch 2 and coupling bead 3, sealed arch 2 highly be less than coupling bead 3's height sealed arch 2 keeps away from the terminal surface formation of chassis 1 is sealed for correspond the laminating with the flange 7 that corresponds the pipeline end and form seal structure, the internal diameter of sealed arch 2 slightly is greater than coupling bead 3's external diameter to form an annular seal groove 4 between sealed arch 2 and coupling bead 3 be acute angle alpha setting between the lateral wall of annular seal groove 4 and the sealed face, so that can be quick when setting up the sealing washer in annular seal groove 4 make the sealing washer install in place, form inclosed structure, prevention of seepage water function further obtains promoting.

Example two

The present embodiment discloses a drain pipe, which is shown in fig. 3, and includes the flange blind plate and the connecting pipe 6; the flange 7 matched with the flange blind plate is correspondingly arranged at one end of the connecting pipe 6, mounting holes corresponding to the mounting holes in the flange blind plate are correspondingly arranged at four corners of the flange 7, and when the mounting holes in the flange blind plate correspond to the mounting holes in the flange 7 on the connecting pipe 6, the flange blind plate is correspondingly fixed on the connecting pipe 6 through corresponding bolts and nuts so as to form plugging for the pipe orifice of the connecting pipe 6.

The connecting pipe 6 and the flange blind plate are both made of FRPP materials, are corrosion-resistant, high-temperature resistant, high-pressure resistant, sanitary and nontoxic, can be recycled, are suitable for corrosive liquid conveying (such as acid-base liquid) and municipal water supply and drainage systems, and have the advantages of excellent impact resistance and tensile strength, light weight, convenience in installation and maintenance and the like.

Although preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present application and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (5)

1. The utility model provides a flange blind plate, includes the chassis, a plurality of connecting holes have been seted up on the chassis, its characterized in that be equipped with ring shape arch on the chassis, ring shape arch is including sealed arch and connection arch, sealed arch is kept away from the terminal surface on chassis forms sealed face, form annular seal groove between sealed arch and the connection arch be equipped with the sealing washer in the annular seal groove.

2. The flange blind of claim 1 wherein the outer sidewall of the annular seal groove is disposed at an acute angle to the sealing surface.

3. The flange blind according to claim 1, wherein the four corners of the bottom plate are round chamfers.

4. A drain pipe, comprising a connecting pipe and the flange blind of claim 1; and a flange is arranged at one end of the connecting pipe and is correspondingly matched with the flange blind plate, so that the flange blind plate is correspondingly arranged on the connecting pipe.

5. The drain pipe of claim 4 wherein the connecting pipe and the flange blind are both FRPP pieces.

Images