CN202356295U

CN202356295U - Improved type screening machine

Info

Publication number: CN202356295U
Application number: CN2011204527877U
Authority: CN
Inventors: 陈立新; 郑廼辉
Original assignee: QUANZHOU CHANGSHENG TEA MACHINERY CO Ltd
Current assignee: QUANZHOU CHANGSHENG TEA MACHINERY CO Ltd
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2012-08-01
Anticipated expiration: 2021-11-15

Abstract

The utility model discloses an improved type screening machine comprising a rack, a hopper and a transmission mechanism, wherein the hopper and the transmission mechanism are arranged on the rack; the transmission mechanism comprises a driving motor, a bent axle and two connecting rods; the bent axle comprises a main shaft neck and two eccentric connecting rod necks; axis leads of the two connecting rod necks are symmetrically arranged by taking the axis lead of the main shaft neck as a central point; the main shaft neck is coupled with an output shaft of the driving motor in a transmission manner; the two connecting rods are respectively arranged at two opposite sides of the axis lead of the main shaft neck; and one ends of the two connecting rods are respectively hinged with the two connecting rod necks and the other ends of the two connecting rods are connected with a screen body. With the adoption of a symmetrical balance principle, the improved type screening machine overcomes the defects in the prior art that the sieving effect is not good, noise pollution is generated, the service life of parts is shortened and the like, which are caused by unstable inertia force of the screen body.

Description

A kind of modified screening machine

Technical field

The utility model belongs to the plant equipment field, specifically is meant a kind of modified screening machine.

Background technology

Screening machine is a kind of machinery equipment that various raw materials such as cereal, tealeaves, medicinal material or parts are sorted by the size sub-sieve of being used for that replaces manual work; It can divide according to screening principle difference has the oscillatory type screening machine, swing type screening machine etc.; It includes existing a kind of swing type screening machine frame and is located at hopper, a sieve nest and the transmission mechanism on this frame; This transmission mechanism comprises drive motors, bent axle and connecting rod, and this bent axle comprises the connecting rod neck of a trunnion and an off-centre, and the pto transmission shaft of trunnion and drive motors connects; One end of connecting rod neck and connecting rod is hinged; The other end of connecting rod connects sieve nest, when working thus, drives crankshaft rotating by drive motors; The connecting rod neck drivening rod that relative trunnion rotates is made back and forth level and is moved repeatedly, drives the sieve nest mobile and sizing screening effect of runout realization material repeatedly back and forth thus.

In the said existing screening machine real work; Realize preferable screening effect; Sieve nest also need keep certain stationarity when doing back and forth runout motion clocklike, however said sieve nest in actual runout because inertia force unavoidably can always cause uncontrolled irregular vibration; Thereby reduced the stationarity of sieve nest; And then influenced screening effect, and the irregular vibration of said sieve nest also can bring certain noise pollution, also can reduce the service life of each parts that is connected with this sieve nest.

In view of this, the inventor furthers investigate to the problems referred to above of existing screening machine, and this case produces thus.

The utility model content

The purpose of the utility model is to provide a kind of modified screening machine, and it adopts the symmetrical balance principle, overcome in the prior art owing to sieve nest inertia force not stationarity cause screening effect not good, produce noise pollution and reduce defective such as parts service life.

In order to reach above-mentioned purpose, the solution of the utility model is:

A kind of modified screening machine; Include frame and be located at hopper and the transmission mechanism on this frame; This transmission mechanism comprises drive motors, bent axle and two connecting rods, and this bent axle comprises the connecting rod neck of a trunnion and two off-centre, and the axial line of this two connecting rods neck is the central point setting with the axial line of above-mentioned trunnion; The pto transmission shaft of above-mentioned trunnion and above-mentioned drive motors connects; Above-mentioned two connecting rods place the two opposite sides Bian Chu of the axial line of above-mentioned trunnion respectively, and an end of this two connecting rod is hinged with above-mentioned two connecting rod necks respectively, and the other end is connected with a sieve nest respectively.

Also be provided with the belt pulley unit of deceleration usefulness between above-mentioned drive motors and the bent axle.

Be equipped with the rolling bearing units that fix with above-mentioned frame on the trunnion of above-mentioned bent axle.

After adopting such scheme; A kind of modified screening machine of the utility model includes trunnion and relative two opposite connecting rod necks of trunnion eccentric position on its bent axle, this two connecting rods neck is connected with a connecting rod and a sieve nest respectively successively; And this two connecting rod places the two opposite sides Bian Chu of the axial line of above-mentioned trunnion respectively; Then driven in the crankshaft rotating motion by drive motors, the two connecting rod necks that eccentric position is opposite will drive two connecting rods and do motion repeatedly back and forth in the opposite direction, thereby the horizontal movement direction of said two sieve nests is also always opposite; Can know by the symmetrical balance principle; The two sieve nests inertia force of its horizontal direction at the volley suppress to offset each other, thereby make sieve nest can keep preferable stationarity at the volley, and then bring excellent screening effect; Can also make each parts of complete machine do normally operation effectively again in addition, so the service life of having avoided noise pollution and having guaranteed each parts and complete machine.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic perspective view of the utility model transmission mechanism;

Fig. 3 is the floor map of the utility model transmission mechanism.

Label declaration

Frame 1 hopper 2

Sieve nest 3 transmission mechanisms 4

Drive motors 41 belt pulley unit 42

Bent axle 43 trunnions 431

Connecting rod neck 432 connecting rods 44

Rolling bearing units 45

The specific embodiment

In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.

Be depicted as a kind of modified screening machine that the utility model relates to like Fig. 1-3; It includes frame 1 and a hopper 2, two sieve nests 3 and the transmission mechanism 4 be located on this frame 1; Said two sieve nests 3 adopt the mode of suspension or support to be located on the frame 1 by the sieve nest connecting rod; And this two sieve nest 3 is and keeps flat setting up and down, and hopper 2 is located at the place, top of two sieve nests 3, is used to supply with material.

Said transmission mechanism 4, shown in Fig. 2-3, it includes drive motors 41, belt pulley unit 42, bent axle 43 and two connecting rods 44; Said bent axle 43 is a hyperbolic axle construction; It comprises the connecting rod neck 432 of a trunnion 431 and two off-centre, and concrete, this two connecting rods neck 432 is divided into first connecting rod neck and second connecting rod neck; Wherein the first connecting rod neck is fixed on the above-mentioned trunnion 431; And the two is to parallel and interlace and is arranged, the place, an end that the first connecting rod neck staggers be connected with one with the extension of trunnion 431 coaxial settings, said second connecting rod neck is fixed on the extension with mode parallel and that stagger mutually; Then the relative extension of first, second connecting rod neck is and is symmetrical set; Set-up mode between two connecting rod necks 432 and the trunnion 431 is thus: the axial line of two connecting rod necks 432 is the central point setting with the axial line of trunnion 431, and the eccentric position of trunnion 431, two connecting rod necks 432 is opposite setting relatively.

Said belt pulley unit 42 comprises large and small belt pulley and is connected in the belt between this large and small belt pulley; The output shaft of drive motors 41 and belt lace crop rotation power transmission shaft connect; The trunnion 431 of big belt pulley and bent axle 43 carries out transmission and is coupling; Said two connecting rods 44 place the two opposite sides Bian Chu of the axial line of trunnion 431 respectively, and an end of this two connecting rod 44 is hinged with two connecting rod necks 432 respectively, and the other end connects an above-mentioned sieve nest 3 respectively; Then this case transmission mechanism 4, and its two bindiny mechanisms that are made up of a connecting rod 44 and a sieve nest 3 respectively are the two opposite sides Bian Chu of the axial line of being located at above-mentioned trunnion 431 (perhaps bent axle 43) relatively symmetrically.

During screening machine work; Drive motors 41 work rotations; Drive bent axle 43 via belt pulley unit 42 and rotate around its axial line, the two connecting rod necks 432 that eccentric position is opposite will drive two connecting rods 44 and do motion repeatedly back and forth in the opposite direction in the horizontal direction, thereby the horizontal movement direction of said two sieve nests 3 is also always opposite; Can know by the symmetrical balance principle; Two sieve nests 3 inertia force of its horizontal direction at the volley can suppress to offset each other, thereby make sieve nest 3 can keep preferable stationarity at the volley, and then bring excellent screening effect; Each parts of complete machine are done normally and operation effectively, so the service life of having avoided noise pollution well and having guaranteed each parts and complete machine.

Said belt pulley unit 42 is located between drive motors 41 and the bent axle 43, and it mainly works the control speed effect of slowing down, and it according to circumstances can not be provided with yet, and belt pulley 42 can also be other versions, as long as can play intermediate reduction gear transmission effect; In order to stablize whole transmission mechanism 4, the particularly stability of bent axle 43, this case also is equipped with two rolling bearing units 45 that fix with frame 1 on the trunnion 431 of bent axle 43.

Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.

Claims

1. modified screening machine; Include frame and be located at hopper and the transmission mechanism on this frame; It is characterized in that: this transmission mechanism comprises drive motors, bent axle and two connecting rods, and this bent axle comprises the connecting rod neck of a trunnion and two off-centre, and the axial line of this two connecting rods neck is the central point setting with the axial line of above-mentioned trunnion; The pto transmission shaft of above-mentioned trunnion and above-mentioned drive motors connects; Above-mentioned two connecting rods place the two opposite sides Bian Chu of the axial line of above-mentioned trunnion respectively, and an end of this two connecting rod is hinged with above-mentioned two connecting rod necks respectively, and the other end is connected with a sieve nest respectively.

2. a kind of modified screening machine as claimed in claim 1 is characterized in that: the belt pulley unit that also has been provided with deceleration usefulness between above-mentioned drive motors and the bent axle.

3. a kind of modified screening machine as claimed in claim 1 is characterized in that: be equipped with the rolling bearing units that fix with above-mentioned frame on the trunnion of above-mentioned bent axle.