CN113546544A

CN113546544A - Method for mounting stirring device

Info

Publication number: CN113546544A
Application number: CN202110825052.2A
Authority: CN
Inventors: 施成伟; 俞基生
Original assignee: SHUANGLONG GROUP CO LTD
Current assignee: SHUANGLONG GROUP CO LTD
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-10-26
Anticipated expiration: 2041-07-21
Also published as: CN113546544B

Abstract

The invention discloses a method for installing a stirring device, which comprises the following steps: placing an adjusting pad in a shell of the stirring device to pad up the stirring piece, so that the axis of a stirring shaft of the stirring piece is superposed or parallel to the axis of the shell; sleeving the flanges provided with the first tool to two ends of a stirring shaft extending out of the shell, enabling the flanges and the stirring shaft to be located at a positioning position through the first tool, and fixing the positioned flanges to the two ends of the shell; the first tool is removed, a second tool for connecting a flange is arranged on the inner side of the shell, and the second tool acts on the stirring shaft to reset and fix the stirring shaft at the positioning position; a suspension boring is sleeved on the stirring shaft, and a boring cutter of the suspension boring performs annular motion by taking the stirring shaft as a shaft to bore a reference surface on the flange; and a support member and a sealing member for bearing the stirring shaft are arranged on the reference surface. The invention has the advantages of high processing precision, small occupied area, dexterity and easy operation.

Description

Method for mounting stirring device

Technical Field

The invention relates to the field of processing equipment, in particular to a method for installing a stirring device

Background

The mixing and stirring equipment is generally in a horizontal structure. The stirring device is arranged in the center of the equipment. The stirring device consists of a stirring shaft and stirring pieces such as a helical band, a coulter, a blade and the like which are uniformly distributed around the shaft. The rotation of stirring piece overturns, stirs, the breakage with the material, makes the material reach the homogeneous mixing. In order to ensure the normal operation of the stirring device, the clearance between the stirring members such as the screw band, the coulter, the blades and the like and the cylinder body must be controlled within a certain range. It follows that the coaxiality of the stirring shaft and the barrel is very important. A shaft sealing device is arranged between the stirring shaft and the barrel in a sealing way; the mounting of the support bearing of the shaft is undertaken by the bearing support. In order to ensure the precision of shaft sealing and shaft rotation, the reference plane for mounting the shaft sealing device and the bearing support must be perpendicular to the shaft. When the equipment shell is assembled, a large boring machine is needed when the installation reference surface of the shaft sealing device and the bearing support is processed on the equipment. Further, the processing is difficult, and the processing may not be possible.

For example, the WLDH8 horizontal type ribbon cooling kettle and the WLDH10 horizontal type ribbon high-temperature kettle which are processed at the same time are provided with shaft sealing devices and bearing supports which are arranged on flanges at two ends of equipment. The kettle is structurally characterized in that a cylinder body and elliptical seal heads at two ends are welded into a whole without flange connection. Therefore, before the final girth welding of the apparatus, the finished spiral shaft must be placed in the cylinder and then the final girth welding is performed. The installation of the flanges of the elliptical heads at the two ends becomes a key. After the integral welding is finished, because the spiral belt shaft is arranged in the cylinder body, the flange of the end sockets at the two ends is difficult to process, and even cannot be processed.

See figure 11 for a schematic diagram of a WLDH8 horizontal ribbon-cooled kettle. The associated core of the five major components in the figure is the flange 2. The flange 2 is welded on the equipment shell 3; the bearing seat bracket 5 is fixed on the flange 2 by bolts, and the stirring shaft 1 is supported by a bearing in the bearing seat bracket 5; the shaft sealing device 4 is fixed on the flange 2 by bolts, and the shaft sealing between the sealing element and the stirring shaft 1 adopts packing sealing. Therefore, the assembly quality of the stirring shaft 1 is directly influenced by the positioning welding of the flange 2 and the equipment shell and the processing of the bearing seat mounting reference surface and the shaft seal mounting reference surface on the flange 2.

There has not previously been a suitable machining method for machining the bearing seat mounting datum and the shaft seal mounting datum on the flange 2. Adjustment can only be performed by adding an adjusting flange. Workers with high technical competence are required in the adjustment process. Moreover, uncontrollable factors such as welding deformation exist, and the assembly quality is influenced.

Disclosure of Invention

The invention aims to solve the technical problems that in the prior art, flanges are difficult to position and weld, and a bearing seat mounting reference surface and a shaft seal mounting reference surface are difficult to process, and provides a mounting method of a stirring device.

The invention solves the technical problems through the following technical scheme:

a method of installing a mixing apparatus, comprising the steps of:

s10: raising a stirring piece in the shell of the stirring device to enable a stirring shaft of the stirring piece to be coincident with or parallel to the axis of the shell;

s20: the first tool positions the flange by taking the stirring shaft as a first reference, so that the flange and the stirring shaft are positioned at a positioning position, and the positioned flange is fixed on the shell;

s30: the second tool fixes and limits the stirring shaft by taking the flange as a second reference, and the stirring shaft after being fixed and limited is overlapped or slightly lower than the first reference;

s40: a suspension boring is sleeved on the stirring shaft, and a reference surface is bored on the flange by the suspension boring by taking the stirring shaft as a third reference;

s50: and a support member and a sealing member for bearing the stirring shaft are arranged on the reference surface.

The installation method has the advantages that: the first tool positions the flange by taking the stirring shaft as a first reference, so that the flange can be accurately positioned, and the problem of difficulty in mounting and positioning the flange is solved;

the second tool fixes and limits the stirring shaft by taking the flange as a second reference, so that the stirring shaft can be reset to a third reference position basically consistent with the first reference, and the positioning precision is ensured;

compared with the existing boring machine, the boring machine has the advantages of small occupied area, dexterity and easy operation.

More preferably, the positioning position is a position where the flange and the stirring shaft are vertically and concentrically maintained.

Preferably, the first tooling includes a flange portion and a sleeve disposed at the center of the flange portion, the sleeve is perpendicular to the flange portion, the inner diameter of the sleeve is adapted to the outer diameter of the stirring shaft, and the step S20 includes: the flange part and the flange are concentrically assembled, and the stirring shaft penetrates into the sleeve. A vertical concentric arrangement between the flange and the stirring shaft is thereby achieved.

Preferably, the step S21 between the steps S20 and S30 includes removing the first fixture and installing a second fixture in the housing to connect the flange. To avoid interference with suspension boring machining of the flange.

Preferably, the second tool includes two clamping pieces, two of the clamping pieces are respectively provided with a semicircular pipe-shaped positioning portion, and the S30 includes: the two positioning parts are spliced to form a clamping pipe for accommodating the stirring shaft. Thereby realizing the limitation of the stirring shaft

More preferably, the S30 further includes: and connecting the two clamping pieces by using an adjusting bolt, and tightening the adjusting bolt to enable the clamping pipe to clamp the stirring shaft. Thereby realizing the fixation of the stirring shaft.

Preferably, the first tool, the second tool and the flange are provided with bolt holes which are overlapped in the axial direction, the second datum is the bolt hole in the flange, the first tool is connected to the second datum, and a step S22 of connecting the second tool to the second datum through bolts after the first tool is detached is included between S21 and S30. Adopt such structure to make the second frock more accurate fix spacing to the (mixing) shaft.

More preferably, the S10 includes the following steps: and clamping an adjusting pad with an inclined surface into an annular gap between the stirring piece and the shell, and enabling the stirring piece to slide relative to the inclined surface. Thereby the stirring piece can be quickly and conveniently padded up.

Preferably, the method further comprises the following step after S50: s60: and taking away the adjusting pad and the second tool.

1. Through the cooperation of adjusting pad, first frock and second frock, can make between (mixing) shaft and the flange can keep perpendicular and concentric relative position, be favorable to improving the machining precision.

2. Compared with the existing boring machine, the boring machine has the advantages of small occupied area, dexterity and easy operation.

Drawings

FIG. 1 is a sectional view of a conventional stirring apparatus

FIG. 2 is a partial view of the head structure of the agitator

FIG. 3 is a schematic diagram of steps S10, S20;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a side cross-sectional view of a first tooling;

FIG. 6 is a top view of the first tooling;

FIG. 7 is a schematic diagram of step S30;

FIG. 8 is a top view of a second tooling;

FIG. 9 is a side cross-sectional view of a second tooling;

FIG. 10 is a schematic view of step S40;

FIG. 11 is a schematic diagram of the background art;

description of reference numerals:

stirring device 100

Casing 110

Flange 111

Opening 112

Shaft seal mounting datum 113

Bearing mount mounting datum 114

Stirring member 120

Stirring shaft 121

Stirring member 122

Hanging bore 200

Support 300

Seal 400

First tool 500

Flange part 510

Sleeve 520

Second tool 600

Clamping member 610

Connecting part 611

Positioning part 622

Splicing edge 623

Adjusting bolt 630

Adjusting pad 700

Inclined surface 710

Bolt hole 800

Detailed Description

A method of installing a stirring device 100, adapted to the stirring device 100 shown in fig. 1 and 2: the stirring device 100 comprises a horizontal cylindrical shell 110 and a stirring piece 120 arranged in the shell 110, wherein the stirring piece 120 comprises a stirring shaft 121 extending from two axial ends of the shell 110 and stirring components 122 such as a helical ribbon, a blade and a colter arranged around the stirring shaft 121, and the stirring components 122 are connected with the stirring shaft 121.

Flanges 111 are installed at both axial ends of the housing 110, and the flanges 111 are used to carry the support 300 and the seal 400. The support 300 is a bearing holder bracket in which a bearing for carrying the stirring shaft 121 is mounted, and the bearing holder bracket is mounted on a bearing holder mounting reference surface 114 on the flange 111. The seal 400 is a shaft seal device provided with a seal ring for sealing the stirring shaft 121, and is attached to the shaft seal attachment reference surface 113 on the flange 111.

Referring to fig. 4, the flange 111 is provided with an opening 112 through which the stirring shaft 121 passes. The diameter of the opening 112 is larger than that of the stirring shaft 121, and the bearing seat mounting reference surface 114 and the shaft seal mounting reference surface 113 are circular ring surfaces arranged concentrically with the opening 112. The interface between the bearing housing mounting datum 114 and the shaft seal mounting datum 113 has a stepped configuration. The mounting position of the bearing block support and the shaft sealing device is defined by a stepped structure.

As shown in fig. 2, the stirring shaft 121 passes through the opening 112 of the flange 111, the supporting member 300 and the sealing member 400, and the stirring shaft 121 is supported and sealed by the supporting member 300 and the sealing member 400.

With reference to fig. 3, 7 and 10, the installation method corresponding to the stirring device 100 includes the following steps:

s10: the stirring piece 120 in the shell 110 of the stirring device 100 is padded up, so that the stirring shaft 121 of the stirring piece 120 is overlapped or parallel with the axis of the shell 110;

s20: the first tool 500 positions the flange 111 with the stirring shaft 121 as a first reference, so that the flange 111 and the stirring shaft 121 are in a positioning position, the positioning position is a position where a vertical concentric arrangement is maintained between the flange 111 and the stirring shaft 121, and then the positioned flange 111 is fixed on the shell 110;

s30: the second tool 600 fixes and limits the stirring shaft 121 by using the flange 111 as a second reference, so that the stirring shaft 121 after being fixed and limited is overlapped or slightly lower than the first reference;

s40: a suspension boring 200 is sleeved on the stirring shaft 121, and the suspension boring 200 bores a bearing seat mounting reference surface 114 and a shaft seal mounting reference surface 113 on the flange 111 by taking the stirring shaft 121 after fixed limiting as a third reference;

s50: the seal 400 is mounted on the shaft seal mounting reference surface 113, and the seal 400 is mounted on the bearing housing mounting reference surface 114.

The installation method has the advantages that: the first tool 500 positions the flange 111 by taking the stirring shaft 121 as a first reference, so that the flange 111 and the stirring shaft 121 can be accurately positioned, and the problem that the flange 111 is difficult to install and position is solved;

the second tool 600 fixes and limits the stirring shaft 121 by taking the flange 111 as a second reference, so that the stirring shaft 121 can be fixedly positioned at a third reference position which is basically consistent with the first reference, and the positioning precision is ensured;

compared with the existing boring machine, the boring machine has the advantages of small occupied area, dexterity and easy operation by adopting the suspension boring 200 for processing.

With reference to fig. 4, 5 and 6, the first tooling 500 includes a disk-shaped flange portion 510 and a sleeve 520 disposed at the center of the flange portion 510, the sleeve 520 is perpendicular to the flange portion 510, the inner diameter of the sleeve 520 is adapted to the shaft diameter of the stirring shaft 121, and the fitting tolerance is 0.1 mm.

The S20 specifically includes the following steps: the flange portion 510 of the first tooling 500 is concentrically assembled on the outer end face of the flange 111, the stirring shaft 121 sequentially passes through the sleeve 520 and the opening 112 in the flange 111, and the first tooling 500 limits the flange 111 by taking the stirring shaft 121 as a first reference, so that the vertical concentric arrangement between the flange 111 and the stirring shaft 121 is realized.

Specifically, the process between steps S20 and S30 includes step S21 of removing the first fixture 500 and installing the second fixture 600 of the connection flange 111 in the housing 110. By adopting the step 21, the stirring shaft 121 can be fixed and limited on the premise of avoiding interference on the machining of the suspension bore 200.

Specifically, with reference to fig. 7, 8, and 9, the second fixture 600 includes two clamping members 610 having the same shape and size, each clamping member 610 includes a semicircular connecting portion 611 and a semicircular tubular positioning portion 622, when the two clamping members 610 are assembled together, the two connecting portions 611 can be assembled to form a circular splicing flange, the two positioning portions 622 can be assembled to form a clamping pipe located at the center of the splicing flange, the clamping pipe is perpendicular to the splicing flange, and the inner diameter of the clamping pipe is adapted to the axial diameter of the stirring shaft 121. The step S30 specifically includes: the second fixture 600 and the flange 111 are assembled concentrically, where the concentric assembly refers to that a splicing flange formed by splicing two clamping members 610 is arranged concentrically with the flange 111, then the stirring shaft 121 is accommodated in a clamping pipe formed by splicing, the two clamping members 610 are connected by using an adjusting bolt 630, and the stirring shaft 121 is clamped by the clamping pipe by tightening the adjusting bolt 630. Therefore, the limit fixation of the stirring shaft 121 is realized, and the stirring shaft 121 at the moment can be positioned on a third reference which is overlapped with or slightly lower than the first reference.

Specifically, the connecting portions 611 have, at the edges of the joining edges 623, joining edges 623 arranged along the edges of the joining edges 623 and perpendicular to the connecting portions 611. The joint edges 623 of the two connecting portions 611 have a gap of 5mm therebetween, and a soft gasket (not shown) is filled in the gap. The adjusting bolt 630 is inserted through the splicing edge 623. With this structure, the adjusting bolt 630 can be prevented from loosening by the cushioning effect of the soft washer.

Preferably, the bolt holes 800 are circumferentially arranged on the flange portion 510 of the first tool 500, the flange 111 and the connecting portion 611 of the second tool 600, and the bolt holes 800 on the flange portion 510, the flange 111 and the second tool 600 are overlapped in the axial direction. The center of the bolt hole 800 on the flange portion 510 coincides with the center of the flange portion 510, the center of the bolt hole 800 on the flange 111 coincides with the center of the flange 111, and the center of the bolt hole 800 on the connecting portion 611 coincides with the center of the spliced flange. Therefore, when the flange 111 and the first tool 500 are connected through the bolts, concentric assembly between the first tool 500 and the flange 111 can be realized, when the first tool 500 is disassembled and the second tool 600 and the bolt hole 800 at the same position on the flange 111 are installed and connected, the pipe clamping of the second tool 600 and the center of the splicing flange can be realized, and the stirring shaft 121 can be reset to a third reference position which is overlapped with the first reference or slightly lower than the first reference under the action of the pipe clamping. The effect of adopting such a structure is that the first tool 500 and the second tool 600 can be connected with the flange 111 based on the same installation reference, so that the precision is further improved and the installation process is more convenient and faster.

Specifically, the S10 is implemented by clamping the adjusting pad 700 with the inclined surface 710 into the annular gap between the stirring member 120 and the housing 110, and sliding the stirring member 120 relative to the inclined surface 710, so as to quickly and conveniently cushion the stirring member 120.

Preferably, the method further comprises the following steps after S50: s60: the adjusting pad 700 and the second tool 600 are removed. The assembled stirring device 100 can normally operate without being blocked.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A method for installing a stirring device is characterized by comprising the following steps:

2. A method of installing a mixing apparatus as claimed in claim 1, wherein: the positioning position is a position where the flange and the stirring shaft are kept vertical and concentric.

3. A method of installing a mixing apparatus as claimed in claim 2, wherein: first frock includes flange portion and locates the sleeve pipe of flange portion center department, the sleeve pipe perpendicular to flange portion, sheathed tube internal diameter with the external diameter looks adaptation of (mixing) shaft, step S20 includes: the flange part and the flange are concentrically assembled, and the stirring shaft penetrates into the sleeve.

4. A method of installing a mixing apparatus as claimed in claim 3, wherein: between the steps S20 and S30, a step S21 is included:

and removing the first tool, and installing a second tool connected with the flange in the shell.

5. The mounting method of the stirring device according to claim 4, wherein the second fixture comprises two clamping members, each of the two clamping members is provided with a positioning portion having a semicircular pipe shape, and the step S30 comprises: the two positioning parts are spliced to form a clamping pipe for accommodating the stirring shaft.

6. The method of installing a mixing apparatus as defined in claim 5, wherein: the S30 further includes: and connecting the two clamping pieces by using an adjusting bolt, and tightening the adjusting bolt to enable the clamping pipe to clamp the stirring shaft.

7. The method of installing a mixing apparatus according to claim 4, wherein: the first tool, the second tool and the flange are provided with bolt holes which are overlapped in the axial direction, the second datum is the bolt hole in the flange, the first tool is connected to the second datum, and the step S22 between S21 and S30 is that after the first tool is detached, the second tool is connected to the second datum through bolts.

8. A method of installing a mixing apparatus as claimed in claim 1, wherein: the S10 includes the steps of:

and clamping an adjusting pad with an inclined surface into an annular gap between the stirring piece and the shell, and enabling the stirring piece to slide relative to the inclined surface.

9. The method of installing a mixing apparatus according to claim 8, wherein: after the step S50, the method further includes the following steps:

s60: and taking away the adjusting pad and the second tool.