CN208771308U - A kind of dasher - Google Patents

Abstract

The utility model relates to a kind of stirring techniques, dasher especially suitable for solid-liquid mixing and chemicals dissolution, including motor reducer, shaft coupling, bracket, tank body, agitating shaft, blade, movable bearing support, hold-down support, bushing, steel ball, motor reducer is rack-mount, bracket is fixed on the top of tank body, stirrer paddle is fixed on agitating shaft, agitating shaft top is coupled by shaft coupling with speed reducer output shaft, spindle nose is inserted into bushing inner hole and is slidably matched under agitating shaft, bushing and movable bearing support inner hole close-fitting, a back taper connected in star is arranged in movable bearing support bottom, a conical socket is arranged in the lower end surface of agitating shaft, a steel ball is placed between two grooves, movable bearing support outer circle top processes a regular hexagon step, with convenient wrench rotary moveable support, steel ball is set to hold out against shaft bottom, outer circle rest part is processed into spiral shell Line, hold-down support bottom are fixed with tank base, are processed into internal screw thread in hold-down support inner hole and are screwed with movable bearing support external screw thread.The utility model compared with prior art, has the advantages of stable, failure rate is low, and manufacturing cost is low, long service life.

Description

A kind of dasher

Technical field

The present invention relates to a kind of stirring techniques, the dasher especially suitable for solid-liquid mixing and chemicals dissolution.

Background technique

Dasher in sewage treatment, is changed because of the advantages such as it is simple with structure, and mixing effect is good, and operating cost is low It is widely used in the fields such as work, food.Although existing dasher is disposed with undersetting, solve agitating shaft and be easy beat The problem of, but due to when agitating shaft self weight is plus stirring liquid to the reaction force of blade, make agitating shaft bear one it is very big to Under axial force, the final power is passed on the bearing of speed reducer lower end, so that bearing is born biggish axial force, reduce bearing Service life, increases the maintenance cost of blender, such as increases dedicated blender rack, though it can solve the above problem, it can be big Width increases the manufacturing cost of blender, and product is made to lose the market competitiveness.

Summary of the invention

It is low that the present invention provides a kind of maintenance cost, long service life, a kind of paddle that speed reducer bottom end bearing is less likely to be damaged Formula blender.

The technical scheme is that a kind of dasher, including motor reducer, shaft coupling, bracket, tank body, stir Axis, blade, movable bearing support, hold-down support, bushing, steel ball are mixed, the motor reducer is rack-mount, and bracket is fixed on tank At the top of body, agitating shaft is coupled with speed reducer output shaft using shaft coupling, and the hold-down support is fixed on tank bottom center, and inner hole adds Work has internal screw thread, and the movable bearing support Excircle machining has external screw thread and matches with the screw thread of hold-down support inner hole, the bushing With movable bearing support inner hole tight fit, spindle nose is slidably matched with bushing inner hole under the agitating shaft, and agitating shaft lower axle end surface has one One groove is arranged at groove, movable bearing support inner hole bottom, and between two grooves, steel ball spherical surface contacts the steel ball with two grooves, described The groove of agitating shaft lower axle end surface, shape can be conical socket, cylinder shape groove or the ball matched with steel ball spherical surface Connected in star, the groove of the movable bearing support bottom, shape can be back taper connected in star, cylinder shape groove or with steel ball spherical surface phase The spherical groove of cooperation.

Compared with prior art, the present invention failure rate is low, and manufacturing cost is low, with long service life excellent with stable Point.

Detailed description of the invention

Fig. 1 is main view of the invention (band broken section)

Fig. 2 is undersetting scheme of installation (band cross-sectional view)

Fig. 3 is agitating shaft lower end schematic diagram

Specific embodiment

In order to solve the defect of existing dasher, the present invention is adopted the following technical solutions, and motor reducer 1 is fixed on On bracket 3, bracket is fixed on the top of tank body 6, and stirrer paddle 4 is fixed on agitating shaft 5, and agitating shaft top passes through shaft coupling 2 Couple with speed reducer output shaft, spindle nose is inserted into 8 inner hole of bushing and is slidably matched under agitating shaft, bushing and 9 inner hole of movable bearing support Close-fitting, movable bearing support bottom are arranged a back taper connected in star 11, and the lower end surface of agitating shaft is arranged a conical socket 14, between two grooves Place a steel ball 10, steel ball spherical surface is contacted with two grooves, movable bearing support outer circle top process a regular hexagon step 12, outer circle its Remaining part point is processed into screw thread 13, regular hexagon step convenient wrench rotary moveable support, make movable bearing support drive steel ball together on It rises, to hold out against shaft bottom, 7 bottom of hold-down support is fixed with tank base, is processed into internal screw thread simultaneously in hold-down support inner hole It is screwed with movable bearing support external screw thread.It is rotated clockwise if blender is seen from above, hold-down support and movable bearing support use Left hand thread；If blender rotation counterclockwise seen from above, hold-down support and movable bearing support use right-handed thread.Setting The purpose of thread rotary orientation is, in blender operational process, can guarantee that steel ball holds out against shaft bottom always.

Working principle: being first welded on top of the tank for bracket, and firm banking centering is welded on tank bottom center, bushing is inlayed Into (interference fit) in movable bearing support inner hole, then movable bearing support is screwed in firm banking inner hole, rotates to the screw thread end, it will Steel ball is put into the back taper connected in star of movable bearing support bottom, spindle nose under agitating shaft is inserted into the inner hole of bushing, by two halves shaft coupling Device is attached separately on agitating shaft and speed reducer output shaft, and speed reducer is rack-mount, and two half a couplers are bolted, With spanner rotary moveable support, increase movable bearing support, when spanner is twisted it is motionless when, illustrate that steel ball has held out against agitating shaft.At this point, opening Dynamic stirring motor, agitating shaft start to rotate, be inserted into bushing since steel ball has held out against spindle nose under agitating shaft and agitating shaft, slow down Machine lower bearing is solely subjected to the rotation torque of agitating shaft.In the process of running, when spindle nose and bushing rub under agitating shaft, frictional force makes Movable bearing support generates small size rotation, and movable bearing support drives steel ball to increase together, when steel ball is increased to hold out against agitating shaft, activity branch Seat no longer rotation increases.As long as in this way, blender continuous rotation, so that it may guarantee that movable bearing support (steel ball) holds out against stirring always Axis makes speed reducer lower bearing be not subject to axial force, to extend the service life of bearing, reduces the maintenance cost of equipment.

Claims (3)

1. a kind of dasher, including it is motor reducer, shaft coupling, bracket, tank body, agitating shaft, blade, movable bearing support, solid Determine support, bushing, steel ball, motor reducer is rack-mount, and bracket is fixed on top of the tank, and agitating shaft and speed reducer export Axis is coupled using shaft coupling, it is characterised in that: the hold-down support is fixed on tank bottom center, and inner hole is machined with internal screw thread, institute Stating movable bearing support Excircle machining has external screw thread and matches with the screw thread of hold-down support inner hole, the bushing and movable bearing support inner hole Tight fit, spindle nose is slidably matched with bushing inner hole under the agitating shaft, and agitating shaft lower axle end surface has a groove, in movable bearing support One groove is arranged at hole bottom, and between two grooves, steel ball spherical surface contacts the steel ball with two grooves.

2. a kind of dasher as described in claim 1, it is characterised in that: the groove of the agitating shaft lower axle end surface, Its shape can be conical socket, cylinder shape groove or the spherical groove matched with steel ball spherical surface.

3. a kind of dasher as described in claim 1, it is characterised in that: the groove of the movable bearing support bottom, shape Shape can be back taper connected in star, cylinder shape groove or the spherical groove matched with steel ball spherical surface.