CN203189550U

CN203189550U - Stirrer shaft coupling bolt fixing structure

Info

Publication number: CN203189550U
Application number: CN 201220640922
Authority: CN
Inventors: 谢卫东; 谢公伟
Original assignee: Sinopec Sichuan Vinylon Works
Current assignee: Sinopec Chongqing Chuanwei Chemical Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-09-11
Anticipated expiration: 2022-11-28

Abstract

The utility model discloses a stirrer shaft coupling bolt fixing structure. A fixing device comprises a split type flange for banding a stirring shaft. The upper surface of the split type flange is provided with a screwed hole used for traversing from a lower shaft coupling flange and through a bolt. The split type flange is composed of more than two parts, and each part is connected to be an integral body through a fixed piece. The split type flange is composed of two components, and the upper parts of the two components are respectively provided with a through hole and a screwed hole, which are used for installing a connecting bolt. The stirrer shaft coupling bolt fixing structure is advantageous in that the structure is simple; the split type flange and the stirring shaft both adopt the split type design, and thereby the screwed hole can be conveniently disposed on the split type flange, and nuts are not required to be dismounted at the time of dismounting the shaft coupling flange, and maintenance operation can be facilitated.

Description

A kind of stirrer coupling bolt fixed structure

Technical field

The utility model relates to a kind of stirrer, relates in particular to coupling bolt fixed structure wherein.

Background technique

In industries such as chemical industry, medicine, food, generally use reactor or the container of band stirrer, as shown in Figure 1, the flange 6 at reactor 1 top is used for installing the base 7 of stirrer, the frame of stirrer is installed on the base 7, frame top is installed the speed reducer of stirrer again, and speed reducer is connected with seal shaft 8 by coupling, and 10 realizations are connected with nut with bolt 9 between the upper coupling flange 4 on the coupling flange 5 of seal shaft 8 lower ends and the stirring shaft 2.Generally speaking, on the seal shaft 8 mechanical seal to be installed, arrive atmosphere environment to prevent the material from leakage in the reactor.For the non-integrated mechanical sealing that does not have axle sleeve, need during maintenance mechanical seal and seal shaft 8 are removed together, this just needs to remove bolt 9 and nut 10.Some occasion can upwards promote stirrer, makes nut 10 exceed the upper limb of stirrer base 7, can be dismountable bolt 9 and nut 10 like this outside reactor.But, some occasion is quite different, owing to interfere between paddle 3 and the reactor end socket, the lifting height of stirrer has only the diagram distance A, and distance A less than distance B, makes the hexagon head of bolt 9 can exceed the upper limb of stirrer base 7 greater than distance C, but nut 10 but can't exceed the upper limb of stirrer base 7, just can't remove bolt 9 and nut 10 outside reactor, must take reactor 1 manhole cover apart, personnel enter the inside of reactor 1 could remove bolt 9 and nut 10.Because the material in a lot of reactors all is poisonous and harmful, inflammable and explosive material, personnel enter reactor 1 inside processing, must purge displacement completely to reactor 1, through sample analysis, the harmful substance concentration in the reactor 1 is lower than safety value, oxygen concentration and airborne oxygen concentration and quite just can advances people's operation.Such purging replacement process need expend a lot of times, and the reactor of dismounting simultaneously 1 manhole cover has also increased workload and working strength, and this is for overhaul of the equipments, and particularly repairing work in emergency circumstances is very disadvantageous.If will lead to the bolt hole flange makes the screw flange into, to remove nut 10, then can make things convenient for bolt 9 to remove.But, because upper coupling flange 4 is overall structures with stirring shaft 2, can't implement this transformation.

The model utility content

The purpose of this utility model is to provide a kind of stirrer coupling bolt fixed structure of being convenient to remove coupling flange.

The purpose of this utility model is to realize like this, a kind of stirrer coupling bolt fixed structure, it is characterized in that: described stirrer coupling bolt fixed structure comprises the split type flange for the banding stirring shaft, the upper surface of described split type flange is provided with the tapped hole that passes bolt from following coupling flange for installing, described split type flange is that plural part is formed, and connects as a whole by fixed block between the various piece.

Described split type flange is that two-part are formed, and the top of two parts is provided with for through hole and tapped hole that connecting bolt is installed.

The utility model is simple in structure, and split type flange and stirring shaft are split-type design, can at the split type flange tapped hole be set easily, and the effect that need not to remove nut when reaching the dismounting coupling flange has made things convenient for inspection operation.

Description of drawings

Fig. 1 is the schematic representation of prior art;

Fig. 2 assembles schematic representation for the utility model embodiment;

Fig. 3 is the schematic representation of split type flange in the utility model embodiment;

Fig. 4 is the A-A sectional view of Fig. 3.

Among the figure, 1 is reactor, and 2 is stirring shaft, 3 is paddle, and 4 is the upper coupling flange, and 5 are following coupling flange, 6 is flange, and 7 is base, and 8 is seal shaft, 9 is bolt, and 10 is nut, and 11 is the split type flange, 11-1 is first portion, 11-2 is second portion, and 12 is connecting bolt, and 13 is tapped hole.

Embodiment

Embodiment 1, and to shown in Figure 4, a kind of stirrer coupling bolt fixed structure comprises split type flange 11 and the connecting bolt 12 of belt length neck as Fig. 2.The aperture of split type flange 11 is that desire is to the diameter on the stirring shaft 2 of its stirrer of transforming, according to parameters such as the specification of coupling bolt, quantity, distribution circle diameters, process tapped hole 13 at split type flange 11, then with this flange to cuing open into two lobes, be respectively the 11-1 of first portion and second portion 11-2, be used for installing through hole and the tapped hole of connecting bolt 12 respectively in two lobe neck flanges processing, be fastened on the stirring shaft at coupling place according to the mode of clip connected.Before connecting bolt 12 was fastening, the tapped hole 13 on the split type flange 11 needed and the upper coupling flange 4 that cooperates, the bolt hole centering of coupling flange 5 down, and bolt 9 is all screwed in tapped holes 13, and is accurate to guarantee that used associated components cooperates.

Claims

1. stirrer coupling bolt fixed structure, it is characterized in that: described stirrer coupling bolt fixed structure comprises the split type flange for the banding stirring shaft, the upper surface of described split type flange is provided with the tapped hole that passes bolt from following coupling flange for installing, described split type flange is that plural part is formed, and connects as a whole by fixed block between the various piece.

2. stirrer coupling bolt fixed structure as claimed in claim 1 is characterized in that: described split type flange is that two-part are formed, and the top of two parts is provided with for through hole and tapped hole that connecting bolt is installed.