CN201702105U

CN201702105U - Novel vibrating screen

Info

Publication number: CN201702105U
Application number: CN2010202479111U
Authority: CN
Inventors: 唐志
Original assignee: 唐志
Priority date: 2010-07-06
Filing date: 2010-07-06
Publication date: 2011-01-12
Anticipated expiration: 2020-07-06

Abstract

The utility model provides a novel vibrating screen, wherein a motor drives a belt transmission mechanism and then drives an eccentric shaft mechanism. The eccentric shaft mechanism is arranged below the middle part of a screen frame, and left and right moving frames are symmetrically arranged on the left and the right sides of the eccentric shaft mechanism, wherein a connecting rod is hinged between the left moving frame and the eccentric shaft mechanism, a plurality of slide ways are fixed on the left moving frame and combined with a main frame to form a linear motion pair, a plurality of composite swing bars are arranged between the left moving frame and the screen frame, the upper ends of the swing bars are hinged on an upper swing bar holder, the middle parts of the swing bars are hinged on a middle swing bar holder, the lower ends of the swing bars are hinged with one end of a small connecting rod, the other end of the small connecting rod is hinged with a pedestal, the pedestal is fixed on the left and the right moving frames, the upper swing bar holder is fixed on the main frame, and the upper swing bar holder is fixed on the screen frame. With the moving screen design, the screen plate can make both linear reciprocating motion and vertical vibrating motion. The novel vibrating screen has the advantages of low noise, large amplitude of vertical vibration, better screening effect and large size.

Description

Novel vibrating screen

Technical field

The utility model relates to the instrument vibratory sieve, particularly has straight-line oscillation and vertical vibration concurrently, and the big large-scale vibrating screen of vertical vibration amplitude.

Background technology

Existing industrial vibratory sieve, general employing motor is a power, by the transmission of belt reducing gear, driving contains the four-bar mechanism of moving sets, wherein, a side link is a crank, and another side link is the toggle (also claiming eccentric shaft mechanism) of guide rod, make screen frame do straight reciprocating motion, promptly the rotation of motor is become the screen frame straight reciprocating motion of (containing sieve plate).

The defective of existing vibratory sieve mainly contains: can not maximize, floor space big (crank linkage driving system is offset to the sieve plate side), have that noise is big, power consumption is big and can not form vertical vibration or the vertical vibration amplitude is little, finally cause the relatively poor problem of screening effect.

The utility model content

The purpose of this utility model provides a kind of existing reciprocating motion, again the bigger novel vibrating screen of vertical vibration and vertical amplitude is arranged.

This novel purpose is achieved in that a kind of novel vibrating screen, comprise motor, belt gear, eccentric shaft mechanism, screen frame and sieve plate, eccentric shaft mechanism is arranged on screen frame middle part lower position, move left framework and be symmetricly set on an eccentric shaft mechanism left side in the same manner with the frame structure that moves right, right both sides, wherein, move left and be hinged with two connecting rods between framework and the eccentric shaft mechanism, move left to be fixed with on the framework and be used as a plurality of slideways that constitute the straight line moving sets with main body frame, move left and be provided with a plurality of compound forks between framework and the screen frame, compound swing rod structure is: the fork upper end is hinged on the upper pendulum bar seat, and on the swing rod, fork lower end and small rod one end were hinged during the fork middle part was hinged on, the small rod other end and base are hinged, base is fixed on and moves left on the framework, and middle swing rod is fixed on the main body frame, and the upper pendulum bar seat is fixed on the screen frame.

Also be provided with the exciting rubber parts between the junction surface of above-mentioned screen frame and main body frame.

Also be provided with a plurality of damper mechanisms between above-mentioned screen frame and the main body frame; The damper mechanism structure is: surrounded by following angle bar and last angle bar and form a rectangular chamber, be fixed with four rod members on the inferior horn iron bottom plate, the bearing activity is set on four rod members, and be set with two springs on each rod member, two springs lay respectively at the above and below of bearing, the upper end that each rod member stretches out the angle bar top board is connected with locknut, and the swing arm lower end is fixed on the bearing, and the swing arm upper end fixes with screen frame.

Be respectively arranged with ball bearing on the fork lower end of above-mentioned compound fork and the base, the small rod two ends connect firmly respectively on the axle of above-mentioned two ball bearings.

The structure of above-mentioned eccentric shaft mechanism is: by first eccentric shaft that is installed on the bearing block, second eccentric shaft and the 3rd eccentric shaft connect composition in turn through shaft coupling, wherein, first eccentric shaft and the 3rd eccentric shaft are by same axis setting, the axis of axis parallel offset first eccentric shaft of second eccentric shaft.

Compared with prior art, this novelly has following characteristics and an advantage:

1, vibratory sieve maximizes

The modularization theory: vibratory sieve maximization technical barrier has not existed.

2, noise is little

Low-noise structural: vibratory sieve no longer is the synonym of noise.Adopt damper mechanism and (abnormity) exciting rubber parts (between mobile framework and main body frame), effectively reduce the vibratory sieve running noise.

3, save the energy

Moving sieve formula design: 1/3 above energy saving has become possibility.

4, the screen frame existing reciprocal translation of moving has vertical vibration again

The transmission mechanism of screen frame adopts exclusive compound swing rod structure, and have the advantages that to strengthen large amplitude: vertical amplitude can be accomplished more than the 15mm.

5, screening effect is better

Sieve plate time vibration: dehydration, de-mediated be the strong guarantee of excellent results more.

6, variable ratio frequency changer drives: allow the user set the optimum operation effect.

7, the support of Jian Huaing: " not vibrating " design of vibratory sieve, saved the external support expense greatly.

8, sieve plate arbitrariness: no matter " straight line ", " banana " or " wave " type sieve plate, the sieve plate that can obtain the good result shape all can use.

9, this crank linkage driving system (rotating torque of motor pulley being become the reciprocating motion of mobile framework) is arranged on the sieve plate lower position, reasonable in design, helps the transmission of straight reciprocating motion.Simultaneously, has the advantage that floor space is little, make things convenient for execute-in-place.

Description of drawings

Fig. 1 is the stereogram (removing the part sieve plate) of this novel vibrating screen;

Fig. 2 is the stereogram of another view directions of Fig. 1;

Fig. 3 is eccentric shaft shown in Figure 1 mechanism, left and right mobile framework and screen frame, the stereogram of drive mechanism between the space framework;

Fig. 4 is compound fork shown in Figure 3 and constitutes the stereogram of the slideway parts of straight line moving sets with main body frame;

Fig. 5 is the stereogram of damper mechanism shown in Figure 3;

Fig. 6 is a kinematic sketch of mechanism shown in Figure 3;

Fig. 7 is the profile of eccentric shaft shown in Figure 3 mechanism;

Fig. 8 is the stereogram of space framework shown in Figure 1 and left and right mobile framework and eccentric shaft mechanism.

The specific embodiment

Fig. 6 illustrates, the mechanical movement principle: entire mechanism adopts connecting rod slider mechanism, power is provided by the combination of eccentric shaft and connecting rod, when eccentric shaft F rotates, the crank that drives on the axle moves reciprocatingly, connecting rod 26 and connecting rod 27 are done symmetric motion by eccentric shaft, and connecting rod 26 adopts with connecting rod 25 and is articulated and connected, and side rod is connected with connecting rod 24 employing rigidity, when axle clockwise rotates, because eccentric, horizontal direction produces displacement, drivening rod 25 and connecting rod 24 past right motions, drivening rod 21 swing of an arc of turning left simultaneously, connecting rod 22 is with advancing swing (among the figure, connecting rod 23 is parallel with connecting rod 22, and hinged with frame), when load is on the load carrier of connecting rod 22, load has a motion to upthrow and displacement, has utilized this principle just, finishes the basic exercise process of sieve, handling between pendular body and the static body simultaneously, adopted to flexibly connect, bigger absorption because vibration that mechanism kinematic brought, and this principle is applied on this novel vibrating screen.

The principle of novel vibrating screen: electronic function is by after the pulley decelerates, pass to the first eccentric shaft 4a, and kinetic energy is passed to the second eccentric shaft 4b and the 3rd eccentric shaft 4c (referring to Fig. 7) by shaft coupling, on the second eccentric shaft 4b and the 3rd eccentric shaft 4c, leave the big connecting rod installation position, big connecting rod is left-right symmetry, respectively there is a mobile framework front and back, each moves framework and is connected with eccentric shaft mechanism by two big connecting rods, the small footprint of rectilinear motion pair and compound fork is installed on mobile framework, another part of rectilinear motion pair is connected with main body frame, the rotation section is equipped with bearing and links to each other with small footprint below the compound fork, compound fork middle part links to each other with main body frame by compound swing rod, compound fork top and vibratory sieve link, all rotary parts all adopt the high-performance deep groove ball bearing, in eccentric shaft mechanism, except adopting deep groove ball bearing, also added thrust ball bearing, rotation along with eccentric shaft, two mobile frameworks are led at straight line under the traction of the width of cloth and are done linear reciprocating motion, simultaneously, it is that compound swing is done in the center of circle to meet the middle connection of fork position that small rod bearing on the mobile framework spurs compound fork, produce a upcast motion, and by the damper mechanism absorbing, between vibration screen frame and main body frame, adopt the high-tension rubber flexible to be connected, thereby reach the effect of secondary exciting, so this novel being actually after having finished the motion of throwing also has the double effects that dewaters under the state of weightlessness.

Fig. 3 illustrates, this novel motor 3 that comprises, belt gear, eccentric shaft mechanism 4, screen frame 2 and sieve plate 2a, eccentric shaft mechanism 4 is arranged on screen frame 2 middle part lower positions, move left framework 5 and be symmetricly set on eccentric shaft mechanism 4 left sides in the same manner with framework 6 structures that move right, right both sides, wherein, move left and be hinged with two connecting rods 7 between framework 5 and the eccentric shaft mechanism 4,8 (shown in Fig. 1, connecting rod is hinged through bearing 12 and mobile framework), move left and be fixed with a plurality of slideways 9 that are used as with main body frame 1 formation straight line moving sets on the framework 5, move left and be provided with a plurality of compound forks 10 between framework and the screen frame 2, compound fork 10 structures are: fork 10c upper end is hinged on the upper pendulum bar seat 10e, the fork middle part is hinged on the middle swing rod 10d, fork lower end and small rod 10b one end are hinged, and the small rod other end and base 10a are hinged, and base 10a is fixed on and moves left on the framework, middle swing rod 10d is fixed on the main body frame 1, and upper pendulum bar seat 10e is fixed on (referring to Fig. 4) on the screen frame 2.Be respectively arranged with ball bearing 10f on the fork 10c lower end of compound fork 10 and the base 10a, small rod 10b two ends connect firmly respectively on the axle of above-mentioned two ball bearings.Also be provided with exciting rubber parts 13 (Fig. 1) between the junction surface of screen frame 2 and main body frame 1.

Referring to Fig. 5, also be provided with a plurality of damper mechanisms 11 between screen frame 2 and the main body frame 1; The damper mechanism structure is: surrounded by following angle bar 11a and last angle bar 11b and form a rectangular chamber, be fixed with four rod members on the following angle bar 11a base plate, bearing 11c (plate) activity is set on four rod members, and be set with two spring 11d, 11e on each rod member, two spring 11d, 11e lay respectively at the above and below of bearing, the upper end that each rod member stretches out the angle bar top board is connected with locknut 11f, swing arm 11g fixes or is hinged in the lower end on the bearing, and the swing arm upper end fixes with screen frame 2.The fork lower end is fixed or is hinged on the bearing.When moving reciprocatingly under the drive of vibratory sieve at power source, because part such as compound fork can not digest the kinetic energy of remainder fall finishing the reciprocating last unit interval, easily cause the distortion of part, thereby influence the service life of entire mechanism, therefore, this mechanism adopts and is symmetrical in the purpose that spring up and down reaches the unnecessary kinetic energy of absorption.

Referring to Fig. 7, the structure of eccentric shaft mechanism 4 is: by the first eccentric shaft 4a (the output belt pulley is installed on it) that is installed on the bearing block 14, the second eccentric shaft 4b and the 3rd eccentric shaft 4c connect composition in turn through shaft coupling 15, wherein, first eccentric shaft and second eccentric shaft are by same axis setting, the axis of axis runout first eccentric shaft of second eccentric shaft.

Entire equipment is provided with the compound swing-bar mechanism of 15 covers altogether, they respectively with mobile framework, main body frame and vibrate screen frame and be connected reaches the purpose of acting by the transmission of kinetic energy.

This equipment is provided with 12 rectilinear motion pairs (being made up of slideway parts shown in Figure 4 and main body frame) altogether, it mainly is in order to transmit reciprocal rectilinear motion process, when eccentric shaft rotated, the mobile framework that is driven by big connecting rod (being connecting rod 7 and connecting rod 8) will move reciprocatingly under the restriction of rectilinear motion pair.

Among Fig. 1, Fig. 2, sieve plate 2a is installed on the screen frame; The main body frame 1 upper and lower outside is respectively arranged with master plate 1b, and stay pipe 1a is fixed between two master plates; The left and right outside of main body frame is respectively equipped with vertical master plate 1c; Side plate 1d is fixed on the master plate 1b, exceeds sieve plate.

Claims

1. novel vibrating screen, comprise, motor (3), belt gear, eccentric shaft mechanism (4), screen frame (2) and sieve plate (2a), it is characterized in that: described eccentric shaft mechanism (4) is arranged on screen frame (2) middle part lower position, move left framework (5) and the framework that moves right (6) structure is symmetricly set on eccentric shaft mechanism (a 4) left side in the same manner, right both sides, wherein, move left between framework (5) and the eccentric shaft mechanism (4) and be hinged with two connecting rods (7,8), move left to be fixed with on the framework (5) and be used as a plurality of slideways (9) that constitute the straight line moving sets with main body frame (1), move left and be provided with a plurality of compound forks (10) between framework and the screen frame (2), compound fork (10) structure is: fork (10c) upper end is hinged on the upper pendulum bar seat (10e), the fork middle part is hinged on the middle swing rod (10d), fork lower end and small rod (10b) end is hinged, (10a) is hinged for the small rod other end and base, base (10a) is fixed on and moves left on the framework, middle swing rod (10d) is fixed on the main body frame (1), and upper pendulum bar seat (10e) is fixed on the screen frame (2).

2. according to the described novel vibrating screen of claim 1, it is characterized in that: also be provided with exciting rubber parts (13) between the junction surface of described screen frame (2) and main body frame (1).

3. according to the described novel vibrating screen of claim 2, it is characterized in that: also be provided with a plurality of damper mechanisms (11) between described screen frame (2) and the main body frame (1); The damper mechanism structure is: surrounded by following angle bar (11a) and last angle bar (11b) and form a rectangular chamber, be fixed with four rod members on following angle bar (11a) base plate, bearing (11c) activity is set on four rod members, and be set with two springs (11d, 11e) on each rod member, two springs (11d, 11e) lay respectively at the above and below of bearing, the upper end that each rod member stretches out the angle bar top board is connected with locknut (11f), swing arm (11g) lower end is fixed on the bearing, and the swing arm upper end fixes with screen frame (2).

4. according to the described novel vibrating screen of claim 3, it is characterized in that: be respectively arranged with ball bearing on fork (10c) lower end of described compound fork (10) and the base (10a), small rod (10b) two ends connect firmly respectively on the axle of above-mentioned two ball bearings.

5. according to the described novel vibrating screen of the arbitrary claim of claim 1～4, it is characterized in that: the structure of described eccentric shaft mechanism (4) is: by first eccentric shaft (4a) that is installed on the bearing block (14), second eccentric shaft (4b) and the 3rd eccentric shaft (4c) connect composition in turn through shaft coupling (15), wherein, first eccentric shaft and the 3rd eccentric shaft are by same axis setting, the axis of axis parallel offset first eccentric shaft of second eccentric shaft.