CN215276918U

CN215276918U - Vertical large-scale long axis agitator convenient to dismantle and change

Info

Publication number: CN215276918U
Application number: CN202121284199.7U
Authority: CN
Inventors: 耿丽平; 王伟; 安海欧; 贾军纪; 杨海召; 迟慧
Original assignee: Zhejiang Petroleum and Chemical Co Ltd
Current assignee: Zhejiang Petroleum and Chemical Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-24
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a vertical large-scale major axis agitator convenient to dismantle and change, including the reactor body, this internal agitator shaft of installing a plurality of transmissions and connecting of reactor, the axis of rotation is constituteed to a plurality of agitator shafts, a plurality of paddles have been cup jointed in the axis of rotation, and the upper end of axis of rotation stretches out the reactor body and is connected with the motor with the linkage, the bearing frame is worn to be equipped with to reactor body bottom, and the lower extreme of axis of rotation is rotatable to be installed on the bearing frame, has and to demolish fast and restore or change, technical characterstic such as greatly reduced cost of maintenance and time.

Description

Vertical large-scale long axis agitator convenient to dismantle and change

Technical Field

The utility model relates to a major axis agitator, more specifically say a bit, relate to a vertical large-scale major axis agitator convenient to dismantle and change, belong to petrochemical device field.

Background

Corresponding agitator of many vertical reactors all supporting in the petrochemical device, this type of agitator mainly belongs to vertical large-scale major axis agitator, generally all the length of axle ten meters, other fixing device do not have in the centre, and the medium is mostly solid-liquid mixture in the reactor, the moment of torsion is big when the axle rotates, the production is rocked, easily cause bottom sprag bearing wearing and tearing, axle head position wearing and tearing when serious, repair the dismouting difficulty, need all tear open whole axle, maintenance work load is huge, and very easily make whole axle crooked scrap, cause the waste.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art problem, the utility model provides a vertical large-scale major axis agitator convenient to dismantle and change that has technical characteristics such as can demolish fast and restore or change, greatly reduced cost of maintenance and time.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides a vertical large-scale major axis agitator convenient to dismantle and change, includes the reactor body, this internal agitator shaft of installing a plurality of transmissions and connecting of reactor, the axis of rotation is constituteed to a plurality of agitator shafts, a plurality of paddles have been cup jointed in the axis of rotation, and the upper end of axis of rotation stretches out the reactor body and is connected with the motor with the linkage, the bearing frame is worn to be equipped with to reactor body bottom, and the lower extreme of axis of rotation is rotatable to be installed on the bearing frame.

Preferably, the upper end of the rotating shaft extends out of the reactor body and is connected with a shaft coupling, and the rotating shaft is connected with the motor through the shaft coupling so as to obtain a driving force source.

Preferably, the stirrer shaft directly rotatably mounted on the bearing seat is a lower connecting shaft, a shaft head is formed at the bottom end of the lower connecting shaft, a sliding bearing is mounted in the bearing seat, and an inner bearing of the sliding bearing is sleeved on the shaft head.

Preferably, the stirrer shaft connected with the lower connecting shaft forms a main shaft, the main shaft and the lower connecting shaft are connected through an MFM flange, the MFM flange comprises a concave flange and a convex flange spliced with the concave flange, the concave flange and the convex flange are locked and fixed by bolts with gaskets after being spliced, a first bearing is arranged in the MFM flange, and the upper end of the lower connecting shaft and the lower end of the main shaft are arranged in an inner bearing of the first bearing in a penetrating manner.

Preferably, the radial fit clearance of the concave-convex surface between the concave flange and the convex flange is not more than 30 μm so as to ensure the concentricity of the rotating shaft.

Preferably, the lower end of the bearing seat is connected with a bottom flange, and the bottom flange is connected to the reactor body through a fastener.

Preferably, a shaft section connecting device is connected between the stirrer shafts on the main shaft, the shaft section connecting device comprises a second bearing positioned in the shaft section connecting device, and the lower end of the stirrer shaft adjacent to the stirrer shaft and positioned above and the upper end of the stirrer shaft positioned below are both arranged in the inner bearing of the second bearing in a penetrating manner;

a paddle is sleeved on the stirrer shaft between the adjacent shaft section connecting devices.

Preferably, the upper end of the reactor body is connected with a reactor upper flange, and the upper end of the rotating shaft extends out of the reactor body through the reactor upper flange.

Preferably, the length of the lower connecting shaft is 500 mm.

Has the advantages that: the connecting shaft at the lower part of the vertical large-scale long shaft stirrer shaft can be quickly disassembled and replaced, the efficiency is high, the disassembly is simple, the shaft with the length of more than ten meters is prevented from being integrally disassembled, maintained or replaced due to the abrasion of the shaft head, a large amount of manpower and material resources are reduced, and the waste is avoided; the vertical large-scale long shaft stirrer shaft is suitable for various petrochemical devices, can be widely applied to the vertical large-scale long shaft stirrer for the petrochemical devices, and has wide application prospect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.

Further description of the objects of the invention:

1. the utility model aims at reducing the maintenance degree of difficulty and the maintenance work load of vertical large-scale major axis agitator, reducing cost of maintenance.

2. The utility model discloses can effectively reduce the maintenance degree of difficulty and the maintenance work load of vertical large-scale major axis agitator, reduce cost of maintenance. A set of MFM flange connecting device is added by disconnecting the mixer shaft from the shaft head at the bottom of the mixer shaft by 500mm, and meanwhile, the integral shaft length is ensured to be unchanged, and the radial fit clearance requirement of the concave-convex surface is not more than 30 mu m, so that the concentricity of the mixing shaft is ensured.

3. The shaft head position is easy to wear seriously in the operation process, the existing stirring shaft can only be maintained by embedding the shaft head or replacing the whole shaft with more than ten meters, the maintenance difficulty is high, and the maintenance cost is high. And the utility model discloses the bottom flange manhole is opened to the accessible, demolishs MFM flange joint device, takes out the lower part connecting axle, can drop into operation after changing new lower part connecting axle, and whole maintenance process is quick, and is high-efficient.

As shown in fig. 1, a vertical large-scale long axis stirrer convenient to disassemble and replace is provided, which includes a reactor body 1, a plurality of stirrer shafts 2 (preferably, two sections are adopted, that is, the lower end is directly connected with a bearing seat 4, the replacement frequency is high, the upper end can be a whole body suitable for a large-scale long axis stirrer, and the upper end is not easy to wear and replace) in transmission connection are installed in the reactor body 1, the rotation shafts are formed by the plurality of stirrer shafts 2, a plurality of blades 3 are sleeved on the rotation shafts, the upper end of the rotation shafts extends out of the reactor body 1 and is connected with a motor for linkage, the bearing seat 4 is penetrated through the bottom of the reactor body 1, and the lower end of the rotation shafts can be rotatably installed on the bearing seat 4.

The principle is as follows: when 7 wearing and tearing of agitator axle spindle nose need be overhauld, empty the qualified back of replacement, can dismantle bottom flange 10, take off bearing frame 4 and slide bearing, pull down concave surface flange 8, convex surface flange 9's connecting bolt, nut and gasket, part concave surface flange 8, convex surface flange 9, take out lower part connecting axle 6 and carry out quick replacement, then the installation resumes the operation.

The stirrer shaft in the technical scheme can be divided into two sections or multiple sections according to the processing and installation difficulty, two sections (a lower connecting shaft 6 and a stirrer shaft 2) are preferably adopted, the bottom of the stirrer shaft is 500mm in actual length matched with the supporting bearing 4, the stirrer shaft is connected with the main shaft through an MFM (magnetic field modeling) flange, and the concave-convex surface radial fit clearance of the concave flange 8 and the convex flange 9 is not more than 30 mu m so as to ensure the concentricity of the stirring shaft. If the sliding bearings on the section of shaft (the lower connecting shaft 6) and the bearing seat 4 are worn and scrapped, the shaft can be quickly disassembled and repaired or replaced, the maintenance cost and time are greatly reduced, meanwhile, the whole shaft can be prevented from being scrapped due to the fact that a small part of shaft is worn and scrapped, waste is reduced, the shaft which is more than ten meters long is not required to be integrally disassembled and repaired or replaced, a large amount of manpower and material resources are reduced, and waste is avoided.

In a preferred embodiment, the upper end of the rotating shaft extends out of the reactor body 1 and is connected with a shaft coupling 5, and the rotating shaft is connected with a motor through the shaft coupling 5 to obtain a driving force source.

In a preferred embodiment, the agitator shaft 2 directly rotatably mounted on the bearing block 4 is a lower connecting shaft 6, a shaft head 7 is formed at the bottom end of the lower connecting shaft 6, and a sliding bearing is mounted in the bearing block 4, and an inner bearing of the sliding bearing is sleeved on the shaft head 7.

In a preferred embodiment, the stirrer shaft 2 connected with the lower connecting shaft 6 forms a main shaft, the main shaft is connected with the lower connecting shaft 6 through an MFM flange, the MFM flange comprises a concave flange 8 and a convex flange 9 spliced with the concave flange 8, the concave flange 8 and the convex flange 9 are locked and fixed by bolts with gaskets after being spliced, a first bearing is arranged in the MFM flange, and the upper end of the lower connecting shaft 6 and the lower end of the main shaft are both arranged in an inner bearing of the first bearing in a penetrating manner.

In a preferred embodiment mode, the radial fit clearance of the concave-convex surfaces between the concave flange 8 and the convex flange 9 is not more than 30 μm so as to ensure the concentricity of the rotating shafts.

In a preferred embodiment, a bottom flange 10 is connected to the lower end of the bearing seat 4, and the bottom flange 10 is connected to the reactor body 1 through a fastener.

In a preferred embodiment mode, a shaft section connecting device 12 is connected between the stirrer shafts 2 on the main shaft, the shaft section connecting device 12 comprises a second bearing positioned in the shaft section connecting device 12, and the lower end of the stirrer shaft 2 adjacent to the stirrer shaft 2 and positioned above and the upper end of the stirrer shaft 2 positioned below are both arranged in the inner bearing of the second bearing in a penetrating manner;

a paddle 3 is sleeved on the stirrer shaft 2 between the adjacent shaft section connecting devices, and the paddle 3 can also be adjusted specifically.

In a preferred embodiment, the upper end of the reactor body 1 is connected with a reactor upper flange 11, and the upper end of the rotating shaft extends out of the reactor body 1 through the reactor upper flange 11.

In a preferred embodiment, the length of the lower connecting shaft 6 is 500mm, and the size is preferred and should not be particularly limited.

Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. The utility model provides a vertical large-scale major axis agitator convenient to dismantle and change which characterized in that: including reactor body (1), install agitator shaft (2) that a plurality of transmissions are connected in reactor body (1), the axis of rotation is constituteed in a plurality of agitator shafts (2), a plurality of paddles (3) have been cup jointed in the axis of rotation, and reactor body (1) is stretched out and be connected with the motor in order to link in the upper end of axis of rotation, bearing frame (4) are worn to be equipped with in reactor body (1) bottom, and the lower extreme of axis of rotation is rotatable to be installed on bearing frame (4).

2. The large vertical long shaft stirrer convenient to disassemble and replace as claimed in claim 1, wherein: the upper end of the rotating shaft extends out of the reactor body (1) and is connected with a shaft coupling half (5), and the rotating shaft is connected with a motor through the shaft coupling half (5) to obtain a driving force source.

3. A large vertical long shaft mixer convenient to disassemble and replace according to claim 1 or 2, wherein: the stirrer shaft (2) directly rotatably mounted on the bearing seat (4) is a lower connecting shaft (6), a shaft head (7) is formed at the bottom end of the lower connecting shaft (6), a sliding bearing is mounted in the bearing seat (4), and an inner bearing of the sliding bearing is sleeved on the shaft head (7).

4. The large vertical long shaft stirrer convenient to disassemble and replace as claimed in claim 3, wherein: the stirrer shaft (2) connected with the lower connecting shaft (6) forms a main shaft, the main shaft and the lower connecting shaft (6) are connected through an MFM flange, the MFM flange comprises a concave flange (8) and a convex flange (9) spliced with the concave flange (8), the concave flange (8) and the convex flange (9) are locked and fixed through bolts with gaskets after being spliced, a first bearing is arranged in the MFM flange, and the upper end of the lower connecting shaft (6) and the lower end of the main shaft are all arranged in an inner bearing of the first bearing in a penetrating mode.

5. The large vertical long shaft stirrer convenient to disassemble and replace as claimed in claim 4, wherein: the radial fit clearance of the concave and convex surfaces between the concave flange (8) and the convex flange (9) is not more than 30 mu m so as to ensure the concentricity of the rotating shaft.

6. A large vertical long shaft mixer easy to disassemble and replace according to claim 1, 2 or 4, wherein: the lower end of the bearing seat (4) is connected with a bottom flange (10), and the bottom flange (10) is connected to the reactor body (1) through a fastener.

7. The large vertical long shaft stirrer convenient to disassemble and replace as claimed in claim 4, wherein: a shaft section connecting device (12) is connected between the stirrer shafts (2) on the main shaft, the shaft section connecting device (12) comprises a second bearing positioned in the shaft section connecting device (12), and the lower ends of the stirrer shafts (2) adjacent to and above the stirrer shafts (2) and the upper ends of the stirrer shafts (2) below the stirrer shafts are all arranged in the inner bearings of the second bearing in a penetrating manner;

a blade (3) is sleeved on the stirrer shaft (2) between the adjacent shaft section connecting devices (12).

8. The large vertical long shaft stirrer convenient to disassemble and replace as claimed in claim 1, wherein: the reactor is characterized in that the upper end of the reactor body (1) is connected with a reactor upper flange (11), and the upper end of the rotating shaft extends out of the reactor body (1) through the reactor upper flange (11).

9. A large vertical long shaft mixer convenient to disassemble and replace according to claim 3 or 5, wherein: the length of the lower connecting shaft (6) is 500 mm.