CN211550886U

CN211550886U - Groove flange

Info

Publication number: CN211550886U
Application number: CN201921889584.7U
Authority: CN
Inventors: 苏艳丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-22
Anticipated expiration: 2029-11-05

Abstract

The utility model provides a groove flange belongs to mechanical equipment technical field. The slot flange that provides includes the tube-shape body, it is protruding to be equipped with the annular of placing the decompression orifice plate on its inner wall, and be used for assembling the interior annular slot of the jump ring of fixed decompression orifice plate, can convenient and fast settle the decompression orifice plate, and effectively fix through the jump ring, the cost is lower, and can also change the built-in decompression orifice plate that has different apertures at any time, satisfy different pressure needs, consequently need not to adopt the method that two slot flanges could just be with decompression orifice plate fixed connection in the pipeline among the prior art, it is convenient and fast more to operate, and there is not decompression orifice plate department and take place the risk of revealing.

Description

Groove flange

Technical Field

The utility model belongs to the technical field of mechanical equipment, a slot flange is related to, especially relate to an it has the slot flange of decompression orifice plate to embed.

Background

The pressure reducing orifice is a pressure reducing orifice that reduces the dynamic pressure (without the static pressure) of the liquid, creating a head pressure drop at the pressure reducing orifice due to local drag losses as the flowing water passes through the pressure reducing orifice. At present, because the number of layers of high-rise buildings is large, hydrostatic pressure born by high-rise buildings and low-rise buildings is different. When water is discharged, the water flow pressure of the lower layer is much higher than that of the upper layer. When a fire disaster is suppressed, the low-layer fire hose often bursts, so that the fire is not timely rescued. When the pressure reducing pore plate is connected to the official passage, flowing water passes through the pressure reducing pore plate, and pressure drop is generated at the pressure reducing pore plate due to local resistance loss, so that the requirements of outlet pressure and flow of the fire hydrant are met.

In the prior art, the pressure reducing orifice plate is generally fixed by two matched flange assemblies, for example, a groove flange for the pressure reducing orifice plate provided by document CN205745756U is provided with an annular protrusion on the inner wall of the body near one end face, a gasket groove for assembling the pressure reducing orifice plate is provided on the annular protrusion, the gasket groove is used for placing the pressure reducing orifice plate, and the two pressure reducing orifice plates are fixedly connected together by the groove flange. Such designs still suffer from complex, bulky, long assembly times and high manufacturing costs, and also risk leakage at the pressure relief orifice plate.

SUMMERY OF THE UTILITY MODEL

To one or more of the problem that exists among the above prior art, the utility model provides a groove flange, including tube-shape body (1), wherein the outer peripheral face both ends of tube-shape body (1) are equipped with annular slot (2) respectively be equipped with annular arch (3) and interior annular slot (4) on tube-shape body (1) inner wall.

The annular protrusion (3) comprises a plane end (31) and an inclined end (32), and the inner annular groove (4) is formed in the inner wall of the cylindrical body (1) on one side of the plane end (31).

The inclined surface end (32) is inclined in a direction inclined toward the flat surface end (31).

The distance between the annular projection (3) and the end of the cylindrical body (1) on the inclined surface end (32) side is shorter than the distance between the annular projection (3) and the end of the cylindrical body (1) on the flat surface end (31) side.

The groove flange further comprises a pressure reducing pore plate (5) and a clamp spring (6), wherein the clamp spring (6) is arranged in the inner annular groove (4), and the pressure reducing pore plate (5) is arranged between the plane end (31) and the clamp spring (6).

The pressure reduction pore plate (5) is of a circular ring structure, and the clamp spring (6) is of an annular structure with an opening.

The cylindrical body (1) is integrally formed and is made of nodular cast iron.

The surface of the cylindrical body (1) is provided with an epoxy resin anticorrosive coating.

The slot flange that provides based on above technical scheme adopts the integrated shaping, the material is the carrier of the tube-shape body conduct decompression orifice plate of nodular cast iron, it is protruding to be equipped with the annular of placing the decompression orifice plate on its inner wall, and the interior annular slot of the jump ring that is used for the fixed decompression orifice plate of assembly, can convenient and fast settle the decompression orifice plate, and effectively fixed through the jump ring, the cost is lower, and can also change the built-in decompression orifice plate that has different apertures at any time, satisfy different pressure needs, consequently need not to adopt two slot flanges to could be with decompression orifice plate fixed connection in the pipeline according to the needs among the prior art, the operation is convenient and fast more, and there is not the risk that decompression orifice plate department takes place. Set up annular slot respectively at the outer peripheral face both ends of tube-shape body simultaneously for with pipeline lug connection, consequently the utility model provides a slot flange is simple and practical, economical and practical, and the installation effectiveness is higher.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of an appearance of a groove flange according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a groove flange according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the pressure reducing orifice plate of the present invention;

fig. 5 is a schematic structural diagram of the clamp spring of the present invention.

Detailed Description

The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, and the embodiment will help understanding the present invention, but not as a limitation to the content of the present invention.

Example 1:

fig. 1 shows an appearance structure diagram of the groove flange provided by the present invention, fig. 2 shows a cross-sectional structure diagram along a-a line in fig. 1, and fig. 3 shows an internal structure diagram of the groove flange. Wherein the utility model provides a slot flange includes tube-shape body 1, and tube-shape body 1 adopts nodular cast iron integrated design, simple structure, and durable is equipped with annular slot 2 respectively at tube-shape body 1's outer peripheral face both ends, and this annular slot 2 is used for and pipe connection, for example through clamp connection, is about to the utility model discloses a behind the one end of slot flange stretched into the pipeline, sticiss the pipeline in annular slot 2 with the clamp, realizes being connected of slot flange and pipeline. The inner wall of the tubular body 1 is further provided with an annular protrusion 3 and an inner annular groove 4, wherein the annular protrusion 3 comprises a flat end 31 and a bevel end 32, the bevel end 32 is inclined towards the flat end 31, and the design is such that the bevel end 32 supports the flat end 31 during the process of water flowing from the flat end 31 to the bevel end 32, which is beneficial for protecting the groove flange. In addition, the distance between the annular protrusion 3 and the end of the tubular body 1 on the inclined end 32 side is shorter than the distance between the annular protrusion 3 and the end of the tubular body 1 on the flat end 31 side, so that when the pressure reduction orifice plate 5 is placed on the flat end 31, the pressure reduction orifice plate 5 is located at the middle position of the tubular body 1, and the balance of the combined structure of the groove flange and the pressure reduction orifice plate 5 is facilitated. The inner annular groove 4 is used for assembling the clamp spring 6 and is arranged on the inner wall of the cylindrical body 1 on one side of the plane end 31, after the clamp spring 6 is assembled on the inner annular groove 4, the clamp spring 6 is matched with the plane end 31 to fix the pressure reduction pore plate 5 inside the cylindrical body 1, and the pressure reduction pore plate with the size of the blind pore can be conveniently replaced by the design, so that the requirements of different resistances are met. Simultaneously the utility model discloses set up annular protrusion 3 and interior annular groove 4 on the inner wall of tube-shape body 1, can realize using two slot flanges to connect the fixed device of fixing with the decompression orifice plate 5 in the inside of tube-shape body 1 with current needs to compare, the utility model provides a slot flange's structure is simpler, uses more aspect, has improved efficiency greatly in the installation to inside sets up the decompression orifice plate, does not have decompression orifice plate department and takes place the risk of revealing.

Example 2:

the groove flange provided in this embodiment is different from embodiment 1 in that the groove flange further includes a pressure reduction orifice plate 5 and a snap spring 6, as shown in fig. 4 and 5, which respectively show schematic structural views of the pressure reduction orifice plate 5 and the snap spring 6, both of which are commercially available. Wherein the snap spring 6 is arranged in the inner annular groove 4, and the pressure reducing orifice plate 5 is matched with the inside of the cylindrical body 1 and is arranged between the plane end 31 of the annular bulge 3 and the snap spring 6. During installation, the pressure relief orifice 5 is first placed over the flat end 31, and then the snap spring 6 is installed within the inner annular groove 4, thereby securing the pressure relief orifice 5.

Use the slot flange that above-mentioned embodiment 2 provided as the example, when using, connect through the 2 pipelines of the annular slot at clamp and the 1 outer peripheral face both ends of tube-shape body, the rivers direction should be for the plane end 31 of following annular arch 3 to the inclined plane end 32 flow, inclined plane end 32 alright with the effect that produces the holding power to plane end 31 like this, do benefit to the protection the utility model discloses a slot flange.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The groove flange is characterized by comprising a cylindrical body (1), wherein annular grooves (2) are respectively arranged at two ends of the outer peripheral surface of the cylindrical body (1), and annular protrusions (3) and inner annular grooves (4) are arranged on the inner wall of the cylindrical body (1).

2. Groove flange according to claim 1, characterized in that the annular protrusion (3) comprises a planar end (31) and a beveled end (32), the inner annular groove (4) being provided on the inner wall of the cylindrical body (1) on the side of the planar end (31).

3. A channel flange according to claim 2, characterized in that the bevel end (32) is inclined in a direction inclined towards the planar end (31).

4. Groove flange according to claim 2, characterized in that the distance between the annular protrusion (3) and the end of the cylindrical body (1) on the side of the beveled end (32) is shorter than the distance between the annular protrusion (3) and the end of the cylindrical body (1) on the side of the flat end (31).

5. The groove flange according to any one of claims 2-4, further comprising a relief orifice plate (5) and a snap spring (6), wherein the snap spring (6) is arranged within the inner annular groove (4), the relief orifice plate (5) being arranged between the planar end (31) and the snap spring (6).

6. Groove flange according to claim 5, characterized in that the pressure relief orifice (5) is of annular configuration and the circlip (6) is of annular configuration with an opening.

7. The channel flange according to claim 5, characterised in that the tubular body (1) is integrally moulded in nodular cast iron.

8. The groove flange according to claim 5, characterized in that the surface of the cylindrical body (1) is provided with an epoxy resin corrosion protection layer.