CN212361145U

CN212361145U - Reducing flange structure

Info

Publication number: CN212361145U
Application number: CN202020781850.0U
Authority: CN
Inventors: 陆刚强
Original assignee: Zhangjiagang Huari Flange Co Ltd
Current assignee: Zhangjiagang Huari Flange Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-01-15
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a reducing flange structure, including last flange, last connecting hole, upward taper type pipe, internal thread pipe, down taper type pipe, lower flange, lower connecting hole, go up the annular, go up annular clearance, go up tin welding layer, conical corrugated pipe, lower annular, tin welding layer, annular clearance, bearing, ring cylinder and filter screen disk down. The utility model discloses realize threaded connection and assemble the function of reducing flange, the structural style of traditional integrative reducing flange of casting has been changed, the accessible is at the filter screen disk of the different specifications of conical corrugated pipe both ends port installation simultaneously, reach filterable effect, can carry out the compression of extrusion department to the conical corrugated pipe that is located upper cone type pipe and lower cone type pipe subtend end and treat the expansion state, be convenient for change the length of reducing flange middle part body part as required, with the molten liquid of ohmic heating instil into successively that annular clearance internal cooling solidifies and forms tin welding layer and annular clearance internal cooling solidifies and form down tin soldering layer down, realize welded seal's function.

Description

Reducing flange structure

Technical Field

The utility model relates to a flange structure specifically is a reducing flange structure and fast assembly method, belongs to reducing flange application technical field.

Background

The reducing flange is named as a reducing flange, the inner diameter size of the reducing flange is different from that of a standard flange to a certain extent, the national flange standard and the chemical industry standard are two major types in China, the European pipe flange standard represented by European Union EN and the American pipe flange system represented by American ASME are adopted in the latest chemical industry flange standard HG/T20592-20635-2009, the characteristic sizes of the flange systems in the same grade are different, and then, the pipe diameter series in China are divided into a metric series and an English series, and the pipe diameter series in China are also different from the metric series and the English series in the same grade.

Casting integrative reducing flange, production process time is longer, is unfavorable for improving production output to lack the structure that can assemble into reducing flange on the assembly line fast through a plurality of spare parts, traditional reducing flange length is fixed dimension simultaneously, is not convenient for change service length according to the in service behavior, because the inside internal diameter of reducing flange is different, and narrows down gradually, the condition that debris pile up the jam appears easily, lacks the filtration that can conveniently tear open and trade the clearance. Therefore, a reducing flange structure and a rapid assembly method are provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reducing flange structure for solving above-mentioned problem.

The utility model discloses a technical scheme realizes above-mentioned purpose, a reducing flange structure, including last taper pipe and lower taper pipe, the annular cylinder has been seted up to last taper pipe conical surface, and annular cylinder and internal thread pipe one end internal thread connection, the big footpath end threaded connection of last taper pipe is in last annular, and leaves upper annular clearance between the big footpath end of last taper pipe and the upper flange middle part hole structure bottom, the annular cylinder is seted up threadedly;

the big-diameter end of the lower tapered pipe is connected with the port at the other end of the internal threaded pipe in a rotating mode through a bearing, the small-diameter end of the lower tapered pipe is connected in the lower annular groove in a threaded mode, a lower annular gap is reserved between the small-diameter end of the lower tapered pipe and the bottom of the middle hole structure of the lower flange, the big-diameter end port of the lower tapered pipe is fixedly connected with the small-diameter end port of the upper tapered pipe through a tapered corrugated pipe, and filter screen wafers of different specifications are installed in the ports at the two ends of the tapered corrugated pipe.

Preferably, the upper ring groove is formed in the edge of an orifice at the bottom of the hole structure in the middle of the upper flange, and the inner ring wall of the upper ring groove is provided with threads.

Preferably, the lower ring groove is formed in the edge of an orifice at the bottom of the middle hole structure of the lower flange, and the inner ring wall of the lower ring groove is provided with threads.

Preferably, six upper connecting holes are annularly and equidistantly formed in the annular edge surface of the upper flange, and the size of the middle aperture of the upper flange is consistent with that of the inner diameter of the large-diameter end of the upper tapered pipe.

Preferably, six lower connecting holes are annularly and equidistantly formed in the annular edge surface of the lower flange, and the aperture of the middle part of the lower flange is consistent with the inner diameter of the small-diameter port of the lower tapered pipe.

Preferably, a tin soldering layer is fused in the upper annular gap, and the tin soldering layer is formed by melting, cooling and solidifying the melted tin bar through heating.

Preferably, a lower soldering layer is fused in the lower annular gap, and the lower soldering layer is formed by melting, cooling and solidifying a molten tin bar through heating.

Preferably, threads are arranged around the large-diameter end of the upper tapered pipe and around the small-diameter end of the lower tapered pipe.

Preferably, the conical corrugated pipe is positioned in the internal threaded pipe, and the conical corrugated pipe is in a contracted state.

Preferably, the quick assembling method of the variable diameter flange structure includes the following steps:

firstly, a bearing is sleeved and assembled on the inner side of the large-diameter end of the lower tapered pipe from the small-diameter port of the lower tapered pipe, and then the small-diameter port of the tapered corrugated pipe is bonded and fixed on the large-diameter port of the lower tapered pipe, and the tapered corrugated pipe is in an extending state;

secondly, the small diameter end of the lower conical pipe penetrates through the bottom port of the internal thread pipe, so that the bearing is assembled in the bottom port of the internal thread pipe, and the effect of rotary connection between the lower conical pipe and the internal thread pipe is realized;

bonding and fixing the small-diameter port of the upper conical pipe at the large-diameter port of the conical corrugated pipe, and then connecting the upper conical pipe with the port at one end of the internal threaded pipe through the annular cylindrical surface of the threaded surface in a threaded manner, so that the conical corrugated pipe at the opposite end of the upper conical pipe and the lower conical pipe can be compressed at the extrusion part to be in an expanded state;

fourthly, sequentially connecting the upper flange with the large-diameter end of the upper tapered pipe through the upper ring groove and connecting the lower flange with the small-diameter end of the lower tapered pipe through the lower ring groove in a threaded manner, so as to achieve the effect of initially fixedly connecting and installing the flanges with different corresponding inner diameters;

dripping the liquid which is heated and melted by electrifying into the upper annular gap, cooling and solidifying to form an upper tin welding layer and a lower tin welding layer, and cooling and solidifying to form a lower tin welding layer to realize the function of welding and sealing;

and sixthly, finishing assembly.

The utility model has the advantages that:

1. the utility model has the advantages of reasonable design, through embolia the assembly at the big footpath end inboard of down-cone type pipe from down-cone type pipe path port with the bearing, down-cone type pipe big footpath port is connected with upper cone type pipe through the tapered bellows, the big footpath end of upper cone type pipe is connected with upper flange screw thread through the upper ring groove simultaneously, down-cone type pipe path end is connected with lower flange screw thread through lower ring groove, thereby realize the function that the reducing flange is assembled into to threaded connection, the structural style of the reducing flange of traditional casting an organic whole has been changed, simultaneously can be through installing the filter screen disk of different specifications at tapered bellows both ends port, reach the effect of filtering, and it is convenient to tear open and trade;

2. the utility model discloses structural design is compact, through passing internal thread socle portion port with lower taper pipe minor diameter end for the bearing assembly is in internal thread socle portion port, with upper taper pipe through the annular cylinder face and the internal thread pipe one end port threaded connection of flank of thread, realize lower taper pipe and upper taper pipe respectively with the internal thread pipe rotate be connected with threaded connection's effect, can carry out the compression of extrusion department to the taper type bellows that is located upper taper pipe and lower taper pipe opposite direction end and wait to expand the state, be convenient for change reducing flange middle part body part's length as required according to the circumstances;

3. the utility model discloses a with last flange through last annular and the big footpath end threaded connection of last taper pipe and lower flange through annular and the small footpath end threaded connection of lower taper pipe down in proper order, reach the effect of preliminary fixed connection installation corresponding different internal diameter flange, with the molten liquid of ohmic heating successively instil into annular clearance internal cooling and solidify and form the soldering layer down with the lower annular clearance internal cooling of formation, realize welded seal's function.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

fig. 3 is a schematic view of an end structure of the conical corrugated pipe of the present invention.

In the figure: 1. the device comprises an upper flange, 2, an upper connecting hole, 3, an upper conical pipe, 4, an internal threaded pipe, 5, a lower conical pipe, 6, a lower flange, 7, a lower connecting hole, 8, an upper ring groove, 9, an upper ring gap, 10, an upper tin welding layer, 11, a conical corrugated pipe, 12, a lower ring groove, 13, a lower tin welding layer, 14, a lower ring gap, 15, a bearing, 16, a ring-shaped cylindrical surface, 17 and a filter screen wafer.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, a variable diameter flange structure and a rapid assembly method thereof include an upper tapered pipe 3 and a lower tapered pipe 5, wherein an annular cylindrical surface 16 is formed on a tapered surface of the upper tapered pipe 3, the annular cylindrical surface 16 is in threaded connection with an inner portion of one end of an internal threaded pipe 4, a large diameter end of the upper tapered pipe 3 is in threaded connection with an upper annular groove 8, an upper annular gap 9 is left between the large diameter end of the upper tapered pipe 3 and the bottom of a middle hole structure of an upper flange 1, and the annular cylindrical surface 16 is provided with threads;

the big footpath end of lower tapered pipe 5 passes through bearing 15 and internal thread pipe 4 other end port internal rotation and is connected, and 5 path end threaded connection of lower tapered pipe is in annular 12 down, leave annular clearance 14 down between 5 path ends of lower tapered pipe and the 6 middle part pore structure bottom of lower flange, 5 big footpath end ports of lower tapered pipe pass through

tapered bellows

11 and 3 path end port fixed connection of upper tapered pipe, and all install the filter screen disk 17 of different specifications in the 11 both ends ports of tapered bellows.

The upper ring groove 8 is formed in the edge of an orifice at the bottom of the middle hole structure of the upper flange 1, and the inner ring wall of the upper ring groove 8 is provided with threads.

The lower ring groove 12 is formed in the edge of an orifice at the bottom of the middle hole structure of the lower flange 6, and the inner ring wall of the lower ring groove 12 is provided with threads.

Six upper connecting holes 2 are formed in the annular edge face of the upper flange 1 at equal intervals, and the aperture size of the middle of the upper flange 1 is consistent with that of the large-diameter end opening of the upper tapered pipe 3.

Six lower connecting holes 7 are formed in the annular edge face of the lower flange 6 at equal intervals, and the diameter of the middle of the lower flange 6 is consistent with the inner diameter of the small-diameter port of the lower tapered pipe 5.

And a tin soldering layer 10 is fixedly fused in the upper annular gap 9, and the tin soldering layer 10 is formed by melting, cooling and solidifying the molten tin bar through heating.

The lower annular gap 14 is internally fused with a lower tin welding layer 13, and the lower tin welding layer 13 is formed by melting, cooling and solidifying a molten tin bar through heating.

Threads are arranged on the periphery of the large-diameter end of the upper tapered pipe 3 and the periphery of the small-diameter end of the lower tapered pipe 5.

The conical corrugated pipe 11 is positioned in the internal threaded pipe 4, and the conical corrugated pipe 11 is in a contraction state.

A quick assembly method of a reducing flange structure comprises the following steps:

firstly, a bearing 15 is sleeved and assembled on the inner side of the large-diameter end of a lower tapered pipe 5 from the small-diameter end of the lower tapered pipe 5, then the small-diameter end of a tapered corrugated pipe 11 is bonded and fixed on the large-diameter end of the lower tapered pipe 5, and the tapered corrugated pipe 11 is in an extending state;

secondly, the small end of the lower conical pipe 5 passes through the bottom port of the internal threaded pipe 4, so that the bearing 15 is assembled in the bottom port of the internal threaded pipe 4, and the effect of rotationally connecting the lower conical pipe 5 and the internal threaded pipe 4 is realized;

thirdly, the small-diameter port of the upper conical pipe 3 is firstly bonded and fixed on the large-diameter port of the conical corrugated pipe 11, then the upper conical pipe 3 is in threaded connection with the port at one end of the inner threaded pipe 4 through the annular cylindrical surface 16 of the threaded surface, and the part, located at the opposite end of the upper conical pipe 3 and the lower conical pipe 5, of the conical corrugated pipe 11 can be compressed to be in a state to be unfolded;

fourthly, the upper flange 1 is connected with the large-diameter end of the upper tapered pipe 3 through the upper ring groove 8 and the lower flange 6 is connected with the small-diameter end of the lower tapered pipe 5 through the lower ring groove 12 in sequence, so that the effect of primarily fixedly connecting and installing flanges with different corresponding inner diameters is achieved;

dripping the liquid which is heated and melted by electrifying into the upper annular gap 9, cooling and solidifying to form an upper tin welding layer 10 and cooling and solidifying in the lower annular gap 14 to form a lower tin welding layer 13, thereby realizing the function of welding and sealing;

and sixthly, finishing assembly.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a reducing flange structure which characterized in that: the device comprises an upper conical pipe (3) and a lower conical pipe (5), wherein an annular cylindrical surface (16) is arranged on the conical surface of the upper conical pipe (3), the annular cylindrical surface (16) is in threaded connection with the inner part of one end of an inner threaded pipe (4), the large-diameter end of the upper conical pipe (3) is in threaded connection with an upper annular groove (8), an upper annular gap (9) is reserved between the large-diameter end of the upper conical pipe (3) and the bottom of a middle hole structure of an upper flange (1), and the annular cylindrical surface (16) is provided with threads;

lower taper pipe (5) big footpath end passes through bearing (15) and internal thread pipe (4) other end port internal rotation and is connected, and lower taper pipe (5) path end threaded connection is in annular (12) down, leave annular clearance (14) down between lower taper pipe (5) path end and lower flange (6) middle part pore structure bottom, lower taper pipe (5) big footpath end port passes through taper bellows (11) and last taper pipe (3) path end port fixed connection, and all installs filter screen disk (17) of different specifications in taper bellows (11) both ends port.

2. The variable diameter flange structure according to claim 1, wherein: the upper ring groove (8) is formed in the edge of an orifice at the bottom of the middle hole structure of the upper flange (1), and the inner ring wall of the upper ring groove (8) is provided with threads.

3. The variable diameter flange structure according to claim 1, wherein: the lower ring groove (12) is formed in the edge of an orifice at the bottom of the middle hole structure of the lower flange (6), and the inner ring wall of the lower ring groove (12) is provided with threads.

4. The variable diameter flange structure according to claim 1, wherein: six upper connecting holes (2) are formed in the annular edge face of the upper flange (1) at equal intervals, and the aperture size of the middle of the upper flange (1) is consistent with that of the large-diameter end of the upper conical pipe (3).

5. The variable diameter flange structure according to claim 1, wherein: six lower connecting holes (7) are formed in the annular edge face of the lower flange (6) at equal intervals, and the aperture size of the middle of the lower flange (6) is consistent with the inner diameter size of the small-diameter port of the lower tapered pipe (5).

6. The variable diameter flange structure according to claim 1, wherein: and a tin soldering layer (10) is fixedly fused in the upper annular gap (9), and the tin soldering layer (10) is formed by melting, cooling and solidifying the molten tin bar through heating.

7. The variable diameter flange structure according to claim 1, wherein: and a lower tin welding layer (13) is fixedly fused in the lower annular gap (14), and the lower tin welding layer (13) is formed by melting, cooling and solidifying a tin bar which is melted by heating.

8. The variable diameter flange structure according to claim 1, wherein: threads are arranged on the periphery of the large-diameter end of the upper conical pipe (3) and the periphery of the small-diameter end of the lower conical pipe (5).

9. The variable diameter flange structure according to claim 1, wherein: the conical corrugated pipe (11) is positioned in the internal threaded pipe (4), and the conical corrugated pipe (11) is in a contraction state.