CN108686928B - Synchronous different-amplitude nested rubbing type grain compound impurity removing vibrating screen - Google Patents
Synchronous different-amplitude nested rubbing type grain compound impurity removing vibrating screen Download PDFInfo
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- CN108686928B CN108686928B CN201810562776.0A CN201810562776A CN108686928B CN 108686928 B CN108686928 B CN 108686928B CN 201810562776 A CN201810562776 A CN 201810562776A CN 108686928 B CN108686928 B CN 108686928B
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- kneading
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- threshing
- synchronous
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 54
- 239000012535 impurity Substances 0.000 title claims abstract description 15
- 150000001875 compounds Chemical class 0.000 title claims abstract description 9
- 238000004898 kneading Methods 0.000 claims abstract description 88
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000000725 suspension Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 abstract description 19
- 238000011086 high cleaning Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 16
- 210000005069 ears Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
Abstract
The invention discloses a synchronous different-amplitude nested kneading type grain compound impurity removing vibrating screen which comprises a frame, a transmission mechanism, a first synchronous vibrating mechanism and a second synchronous vibrating mechanism, wherein the transmission mechanism is arranged at the front part of the frame, the first synchronous vibrating mechanism and the second synchronous vibrating mechanism are both arranged in the middle of the frame, the second synchronous vibrating mechanism is nested above the first synchronous vibrating mechanism, the transmission shaft is arranged on the frame through a bearing, a first eccentric wheel and a second eccentric wheel are both fixed on the transmission shaft, an outer rocker is hinged on an outer lifting lug, an inner rocker is hinged on an inner lifting lug, a first vibrating frame is hinged on the outer rocker through a suspension arm, a second vibrating frame is hinged on the inner rocker, a third kneading guide piece is arranged in a crossing way with the first kneading guide piece, a fourth kneading guide piece is arranged in a crossing way with the second kneading guide piece, and a round hole screen surface is fixed at the bottom of the first vibrating frame. The invention has the advantages of high screening efficiency, good re-threshing effect, high cleaning rate of the separated matters, low impurity content, simple structure and high reliability.
Description
Technical Field
The invention relates to an agricultural machinery cleaning vibrating screen, in particular to a synchronous different-width nested kneading type grain compound impurity removing vibrating screen.
Background
The cleaning operation is to separate grain seeds from the separated matters through the vibrating screen, the cleaning degree of the separated seeds has important influence on the subsequent storage, transportation, processing and other links, the cleaning rate of the seeds is a main index for measuring the quality of the cleaning operation, and practice proves that the performance of the vibrating screen is an important guarantee for realizing high cleaning rate, so that the improvement of the vibrating screen structure and the expansion of the vibrating screen function have important practical significance.
In the cleaning operation process, the operation object of the vibrating screen is grain threshing matters from a threshing device, and the grain threshing matters mainly comprise 3 components: removing seeds, impurities and unremoved components. The threshing device is insufficient for threshing crops, a large proportion of threshing devices is occupied in the threshing materials, the threshing devices mainly comprise kernel with coat and broken ears, the kernel with coat and the threshing materials are equivalent in size and are easy to penetrate through a vibrating screen, and the kernel with coat and the threshing materials are mixed in the separated materials, so that the impurity content of the separated materials is improved, and the cleaning quality is seriously reduced; the broken ears are large in size and cannot penetrate through the vibrating screen, the screen holes are blocked due to accumulation on the screen surface, a large number of grains are wrapped on the broken ears, and large grain loss is caused if the broken ears are discharged outside the machine. Therefore, in order to improve the cleaning rate of the separated matters and reduce the cleaning loss, the vibrating screen is required to separate the removed seeds from the separated matters and effectively treat unremoved components such as the coated seeds and broken ears in the cleaning operation process, however, in the conventional cleaning device, the vibrating screen cannot carry out repeated removal on the coated seeds and broken ears and the like, so that the cleaning efficiency cannot be fundamentally improved, and the impurity content of the separated matters is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the synchronous different-width nested kneading type grain re-impurity removal vibrating screen which has high cleaning efficiency, less cleaning loss, high grain cleaning rate, simple and reliable structure, multiple functions and good re-impurity removal effect, and the technical scheme of the invention is as follows in combination with the attached drawing of the specification:
the synchronous different-amplitude nested kneading type grain compound impurity removing vibrating screen consists of a frame 1, a transmission mechanism 2, a first synchronous vibrating mechanism 3 and a second synchronous vibrating mechanism 4;
the transmission mechanism 2 is arranged at the front part of the frame 1, the first synchronous vibration mechanism 3 and the second synchronous vibration mechanism 4 are both arranged in the middle of the frame 1, and the second synchronous vibration mechanism 4 is nested above the first synchronous vibration mechanism 3;
the frame 1 is composed of a left side plate 5, a right side plate 11, outer lifting lugs 17 and inner lifting lugs 19, wherein four outer lifting lugs 17 are symmetrically fixed on the outer walls of the left side plate 5 and the right side plate 11, four inner lifting lugs 19 are symmetrically fixed on the inner walls of the left side plate 5 and the right side plate 11, and the fixed positions of the outer lifting lugs 17 and the inner lifting lugs 19 on the frame 1 are identical in height;
the transmission mechanism 2 consists of a first driving seat 6, a first eccentric wheel 7, a second driving seat 8, a second eccentric wheel 9, a transmission shaft 10, bolts 12, bearings 13, belt wheels 14, outer rocking rods 15, limiting rings 16 and inner rocking rods 18, wherein two ends of the transmission shaft 10 are arranged on the frame 1 through the bearings 13, two first eccentric wheels 7 are symmetrically fixed on two sides of the transmission shaft 10, the first driving seat 6 is arranged on the first eccentric wheel 7, two second eccentric wheels 9 are symmetrically fixed on two sides of the transmission shaft 10, the second driving seat 8 is arranged on the second eccentric wheel 9, the second eccentric wheels 9 are positioned on the inner side of the first eccentric wheel 7, the eccentric distances of the second eccentric wheels 9 and the first eccentric wheels 7 are the same, the eccentric distances of the first eccentric wheels 7 are larger than those of the second eccentric wheels 9, the belt wheels 14 are fixed at the tail ends of the transmission shaft 10, one ends of four outer rocking rods 15 are correspondingly hinged on four outer lifting lugs 17, one ends of the four inner rocking rods 18 are correspondingly hinged on four inner rocking rods 19, the outer rocking rods 15 and the same in size as the inner rocking rods 18 are arranged on the outer rocking rods 15 and the outer rocking rods 18, and the limiting rocking rods 18 are axially arranged on the outer rocking rods 15 and the outer rocking rods 18;
the first synchronous vibration mechanism 3 consists of a first vibration frame 20, a first vertical beam 21, first joints 22, suspension arms 23, a first profiling re-threshing screen bar 24, a round hole screen surface 25 and a second profiling re-threshing screen bar 26, wherein the first vertical beam 21 is uniformly fixed on the first vibration frame 20, the two first joints 22 are fixed at the front end of the first vibration frame 20, the first joints 22 are hinged to a first driving seat 6, the four suspension arms 23 are symmetrically fixed at the left side and the right side of the first vibration frame 20, the suspension arms 23 are correspondingly hinged to the other ends of the four outer rocking bars 15, the round hole screen surface 25 is fixed at the bottom of the first vibration frame 20, the first profiling re-threshing screen bar 24 is fixed at the middle part of the first vertical beam 21, and the second profiling re-threshing screen bar 26 is fixed at the upper part of the first vertical beam 21;
the second synchronous vibration mechanism 4 consists of a second connector 27, a second vertical beam 28, a third profiling re-threshing screen bar 29, a fourth profiling re-threshing screen bar 30 and a second vibration frame 31, wherein the two second connectors 27 are symmetrically fixed at the front end of the second vibration frame 31, the second connector 27 is hinged to the second driving seat 8, the second vertical beam 28 is uniformly fixed on the second vibration frame 31, the third profiling re-threshing screen bar 29 is fixed at the lower part of the second vertical beam 28, the fourth profiling re-threshing screen bar 30 is fixed at the upper part of the second vertical beam 28, the second vibration frame 31 is hinged to the other ends of the four inner rockers 18, and the second vibration frame 31 is nested above the first vibration frame 20;
the third kneading guide piece 36 of the third profile modeling multiple-release screen 29 is arranged to cross the first kneading guide piece 35 of the first profile modeling multiple-release screen 24, and the fourth kneading guide piece 33 of the fourth profile modeling multiple-release screen 30 is arranged to cross the second kneading guide piece 32 of the second profile modeling multiple-release screen 26.
Two rows of knife-shaped kneading teeth 34 are respectively distributed on two sides of the second kneading guide plate 32, three rows of knife-shaped kneading teeth 34 are respectively distributed on two sides of the fourth kneading guide plate 33, two rows of semi-cylindrical kneading teeth 37 are respectively distributed on two sides of the first kneading guide plate 35, and one row of semi-cylindrical kneading teeth 37 are respectively distributed on two sides of the third kneading guide plate 36.
Compared with the prior art, the invention has the beneficial effects that:
the invention optimizes the operation form of the vibrating screen by utilizing the motion principle of the synchronous different-amplitude nested double-vibrating mechanism, expands the functions of the vibrating screen, carries out multistage repeated stripping and screening coupling action on unremoved components in the separated matters in the screening process, greatly improves the quality and efficiency of vibration screening, effectively improves the cleaning rate of the separated matters and reduces the cleaning loss.
Drawings
FIG. 1 is a schematic illustration of the structure of an embodiment of the present invention with portions of a second profile modeling multiple-screening strip and a fourth profile modeling multiple-screening strip removed.
Fig. 2 is a schematic diagram of a structure in which the first synchronous vibration mechanism and the second synchronous vibration mechanism are removed according to the embodiment of the present invention.
Fig. 3 is a schematic structural view of a first synchronous vibration mechanism according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a second synchronous vibration mechanism according to an embodiment of the present invention.
Fig. 5 is a partially enlarged view at a in fig. 1.
Fig. 6 is a partially enlarged view at B in fig. 1.
In the figure:
1-a frame; 2-a transmission mechanism; 3-a first synchronous vibration mechanism; 4-a second synchronous vibration mechanism;
5-left side plate; 6-a first driving seat; 7-a first eccentric; 8-a second driving seat;
9-a second eccentric; 10-a transmission shaft; 11-right side plate; 12-a bolt;
13-a bearing; 14-belt wheel; 15-an outer rocker; 16-a limiting ring;
17-an outer lifting lug; 18-an inner rocker; 19-an inner lifting lug; 20-a first vibrating frame;
21-a first vertical beam; 22-a first joint; 23-a suspension arm; 24-first profiling re-screening bars;
25-a round hole screen surface; 26-second profiling re-screening strip; 27-a second linker; 28-a second vertical beam;
29-third profiling re-screening strip; 30-fourth profiling re-threshing screen bars; 31-a second vibrating frame; 32-second kneading the guide piece;
33-fourth kneading the guide piece; 34-knife-shaped kneading teeth; 35-first kneading the guide piece; 36-third kneading the guide piece;
37-semi-cylindrical kneading teeth.
Detailed Description
In order to further explain the technical scheme and the working process of the invention, the specific embodiments of the invention are as follows in combination with the attached drawings in the specification:
as shown in fig. 1, the invention discloses a synchronous different-amplitude nested kneading type grain compound impurity removing vibrating screen, which mainly comprises four parts of a frame 1, a transmission mechanism 2, a first synchronous vibrating mechanism 3 and a second synchronous vibrating mechanism 4, wherein the transmission mechanism 2 is arranged at the front part of the frame 1, the first synchronous vibrating mechanism 3 is arranged in the middle of the frame 1, the second synchronous vibrating mechanism 4 is also arranged in the middle of the frame 1, and the second synchronous vibrating mechanism 4 is nested above the first synchronous vibrating mechanism 3.
As shown in fig. 2, the frame 1 includes a left side plate 5, a right side plate 11, an outer lifting lug 17 and an inner lifting lug 19, wherein four outer lifting lugs 17 are symmetrically fixed on the outer walls of the left side plate 5 and the right side plate 11, four inner lifting lugs 19 are symmetrically fixed on the inner walls of the left side plate 5 and the right side plate 11, and the positions of the outer lifting lug 17 and the inner lifting lug 19 fixed on the frame 1 are the same in height;
as shown in fig. 2, the transmission mechanism 2 comprises a first driving seat 6, a first eccentric wheel 7, a second driving seat 8, a second eccentric wheel 9, a transmission shaft 10, a bolt 12, a bearing 13, a belt wheel 14, an outer rocker 15, a limiting ring 16 and an inner rocker 18; the two ends of the transmission shaft 10 are arranged on the frame 1 through bearings 13, the two bearings 13 are fixed on two side plates of the frame 1 through bolts 12, the two first eccentric wheels 7 are symmetrically fixed on the two ends of the transmission shaft 10, the first driving seat 6 is arranged on the first eccentric wheels 7, the two second eccentric wheels 9 are symmetrically fixed on the two ends of the transmission shaft 10, the second driving seat 8 is arranged on the second eccentric wheels 9, the second eccentric wheels 9 are positioned on the inner sides of the first eccentric wheels 7, the eccentric directions of the second eccentric wheels 9 and the first eccentric wheels 7 are the same, and the eccentric distance of the first eccentric wheels 7 is larger than that of the second eccentric wheels 9; the belt wheel 14 is fixed at the tail end of the transmission shaft 10, one ends of the four outer rocking bars 15 are hinged to the outer lifting lug 17, one ends of the four inner rocking bars 18 are hinged to the inner lifting lug 19, the outer rocking bars 15 and the inner rocking bars 18 are the same in size, the limiting rings 16 are arranged on the outer sides of the outer rocking bars 15 and the inner rocking bars 18, and the outer rocking bars 15 and the inner rocking bars 18 play an axial limiting role.
As shown in fig. 3, the first synchronous vibration mechanism 3 comprises a first vibration frame 20, a first vertical beam 21, a first joint 22, a suspension arm 23, a first profiling multiple-screening strip 24, a round hole screening surface 25 and a second profiling multiple-screening strip 26; the first vertical beams 21 are uniformly fixed on the first vibration frame 20 in a row, two first connectors 22 are fixed at the front end of the first vibration frame 20, the first connectors 22 are hinged to the first driving seat 6, four suspension arms 23 are symmetrically fixed at the left side and the right side of the first vibration frame 20, the four suspension arms 23 are correspondingly hinged to the other ends of the four outer rocking bars 15, a round hole screen surface 25 is fixed at the bottom of the first vibration frame 20, a first profiling re-threshing screen bar 24 is fixed at the middle part of the first vertical beam 21, and a second profiling re-threshing screen bar 26 is fixed at the upper part of the first vertical beam 21;
as shown in fig. 4, the second synchronous vibration mechanism 4 includes a second joint 27, a second vertical beam 28, a third profiling complex release screen bar 29, a fourth profiling complex release screen bar 30 and a second vibration frame 31, where the two second joints 27 are symmetrically fixed at the front end of the second vibration frame 31, the second joints 27 are hinged to the second driving seat 8, the second vertical beam 28 is uniformly fixed on the second vibration frame 31 in a row, the third profiling complex release screen bar 29 is fixed at the lower part of the second vertical beam 28, the fourth profiling complex release screen bar 30 is fixed at the upper part of the second vertical beam 28, the four second vibration frames 31 are correspondingly hinged to the other ends of the four inner rockers 18, and the second vibration frame 31 is nested above the first vibration frame 20.
The third kneading guide piece 36 of the third profiling multiple-screen bar 29 is arranged to cross the first kneading guide piece 35 of the first profiling multiple-screen bar 24, and the fourth kneading guide piece 33 of the fourth profiling multiple-screen bar 30 is arranged to cross the second kneading guide piece 32 of the second profiling multiple-screen bar 26.
As shown in fig. 5, two rows of knife-shaped kneading teeth 34 are respectively distributed on two sides of the second kneading guide plate 32, and three rows of knife-shaped kneading teeth 34 are respectively distributed on two sides of the fourth kneading guide plate 33.
As shown in fig. 6, two rows of semi-cylindrical kneading teeth 37 are respectively arranged on two sides of the first kneading guide plate 35, and one row of semi-cylindrical kneading teeth 37 are respectively arranged on two sides of the third kneading guide plate 36.
The working principle of the synchronous different-width nested kneading type grain compound impurity removal vibrating screen is as follows:
the belt wheel 14 is connected with external power to drive the transmission shaft 10 to rotate, the transmission shaft 10 drives the first eccentric wheel 7 and the second eccentric wheel 9 to rotate simultaneously, the first eccentric wheel 7 drives the first synchronous vibrating mechanism 3 to vibrate reciprocally through the first driving seat 6, the second eccentric wheel 9 drives the second synchronous vibrating mechanism 4 to vibrate reciprocally through the second driving seat 8, the eccentric direction of the second eccentric wheel 9 and the eccentric direction of the first eccentric wheel 7 are the same, but the eccentric distance of the first eccentric wheel 7 is larger than the eccentric distance of the second eccentric wheel 9, so that the vibration period of the first synchronous vibrating mechanism 3 and the second synchronous vibrating mechanism 4 is the same, but the stroke curves are different, in the synchronous vibrating process, the second profiling complex screening strip 26 and the fourth profiling complex screening strip 30 are nested together to form an upper kneading screen, and the second profiling complex screening strip 26 and the fourth profiling complex screening strip 30 can generate relative motion due to the fact that the second kneading guide piece 32 on the second profiling complex screening strip 26 and the fourth profiling complex screening strip 30 are not changed in the eccentric direction, and the first profiling strip and the fourth profiling complex screening strip 30 are in the same time, and the first profiling screen gap is changed in the same by the same principle when the first profiling strip and the fourth profiling strip are in the same in the process.
The working process of the synchronous different-width nested kneading type grain compound impurity removal vibrating screen is as follows:
the materials firstly fall into the upper kneading sieve formed by the second profiling re-threshing sieve strip 26 and the fourth profiling re-threshing sieve strip 30, small-size materials such as seeds can smoothly pass through the gaps of the second kneading guide plate 32 and the fourth kneading guide plate 33 to realize the thorough sieving, when the broken ears fall into the gaps of the second kneading guide plate 32 and the fourth kneading guide plate 34 due to larger size, the broken ears can be cut and kneaded by knife-shaped kneading teeth on the guide plates, the cut materials enter the lower kneading sieve formed by the first profiling re-threshing sieve strip 24 and the third profiling re-threshing sieve strip 29 after being cut, and when the materials pass through the first kneading guide plate 35 and the third kneading guide plate 36, the small-size materials can be extruded by semi-cylindrical kneading teeth on the guide plates to realize further re-threshing, and finally the materials fall into the round hole sieve surface 26 for separation again.
Claims (1)
1. Synchronous different-width nested kneading type grain compound impurity removing vibrating screen is characterized in that:
consists of a frame (1), a transmission mechanism (2), a first synchronous vibration mechanism (3) and a second synchronous vibration mechanism (4);
the transmission mechanism (2) is arranged at the front part of the frame (1), the first synchronous vibration mechanism (3) and the second synchronous vibration mechanism (4) are both arranged in the middle of the frame (1), and the second synchronous vibration mechanism (4) is nested above the first synchronous vibration mechanism (3);
the machine frame (1) is composed of a left side plate (5), a right side plate (11), outer lifting lugs (17) and inner lifting lugs (19), wherein the four outer lifting lugs (17) are symmetrically fixed on the outer walls of the left side plate (5) and the right side plate (11), the four inner lifting lugs (19) are symmetrically fixed on the inner walls of the left side plate (5) and the right side plate (11), and the heights of the fixed positions of the outer lifting lugs (17) and the inner lifting lugs (19) on the machine frame (1) are the same;
the transmission mechanism (2) consists of a first driving seat (6), a first eccentric wheel (7), a second driving seat (8), a second eccentric wheel (9), a transmission shaft (10), a bolt (12), a bearing (13), a belt wheel (14), an outer rocker (15), a limiting ring (16) and an inner rocker (18), wherein two ends of the transmission shaft (10) are arranged on the frame (1) through the bearing (13), two first eccentric wheels (7) are symmetrically fixed on two sides of the transmission shaft (10), the first driving seat (6) is arranged on the first eccentric wheel (7), two second eccentric wheels (9) are symmetrically fixed on two sides of the transmission shaft (10), the second driving seat (8) is arranged on the second eccentric wheel (9), the second eccentric wheel (9) is positioned on the inner side of the first eccentric wheel (7), the eccentric direction of the second eccentric wheel (9) is the same as that of the first eccentric wheel (7), the eccentric distance of the first eccentric wheel (7) is larger than that of the second eccentric wheel (9), the belt wheel (14) is fixed at the tail ends of the transmission shaft (14) on two sides of the transmission shaft (10) which are correspondingly hinged on four rockers (17) with four lifting lugs (17) with the same size on the inner rocker (15) and one end (17) which is hinged on the inner rocker (17), the limiting ring (16) is arranged on the outer sides of the outer rocker (15) and the inner rocker (18) to realize axial limiting, the belt wheel (14) is connected with external power to drive the transmission shaft (10) to rotate, the transmission shaft (10) drives the first eccentric wheel (7) and the second eccentric wheel (9) to rotate simultaneously, the first eccentric wheel (7) drives the first synchronous vibration mechanism (3) to vibrate in a reciprocating mode through the first driving seat (6), and the second eccentric wheel (9) drives the second synchronous vibration mechanism (4) to vibrate in a reciprocating mode through the second driving seat (8);
the first synchronous vibrating mechanism (3) consists of a first vibrating frame (20), a first vertical beam (21), first joints (22), suspension arms (23), first profiling re-threshing screen bars (24), round hole screen surfaces (25) and second profiling re-threshing screen bars (26), wherein the first vertical beam (21) is uniformly fixed on the first vibrating frame (20), the two first joints (22) are fixed at the front end of the first vibrating frame (20), the first joints (22) are hinged to a first driving seat (6), four suspension arms (23) are symmetrically fixed on the left side and the right side of the first vibrating frame (20), the suspension arms (23) are correspondingly hinged to the other ends of four outer rocking bars (15), the round hole screen surfaces (25) are fixed at the bottom of the first vibrating frame (20), the first profiling re-threshing screen bars (24) are fixed at the middle part of the first vertical beam (21), and the second profiling re-threshing screen bars (26) are fixed at the upper part of the first vertical beam (21);
the second synchronous vibration mechanism (4) consists of a second connector (27), a second vertical beam (28), a third profiling re-threshing screen bar (29), a fourth profiling re-threshing screen bar (30) and a second vibration frame (31), wherein the two second connectors (27) are symmetrically fixed at the front ends of the second vibration frame (31), the second connectors (27) are hinged to a second driving seat (8), the second vertical beam (28) is uniformly fixed on the second vibration frame (31), the third profiling re-threshing screen bar (29) is fixed at the lower part of the second vertical beam (28), the fourth profiling re-threshing screen bar (30) is fixed at the upper part of the second vertical beam (28), the second vibration frame (31) is hinged to the other ends of the four inner rocking bars (18), and the second vibration frame (31) is nested above the first vibration frame (20);
the third kneading guide piece (36) of the third profiling re-threshing screen bar (29) is arranged in a cross way with the first kneading guide piece (35) of the first profiling re-threshing screen bar (24), and the fourth kneading guide piece (33) of the fourth profiling re-threshing screen bar (30) is arranged in a cross way with the second kneading guide piece (32) of the second profiling re-threshing screen bar (26);
two rows of knife-shaped kneading teeth (34) are respectively distributed on two sides of the second kneading guide piece (32), three rows of knife-shaped kneading teeth (34) are respectively distributed on two sides of the fourth kneading guide piece (33), two rows of semi-cylindrical kneading teeth (37) are respectively distributed on two sides of the first kneading guide piece (35), and a row of semi-cylindrical kneading teeth (37) are respectively distributed on two sides of the third kneading guide piece (36);
the second profiling re-threshing screen bar (26) and the fourth profiling re-threshing screen bar (30) are nested together to form an upper kneading screen, the second profiling re-threshing screen bar (26) and the fourth profiling re-threshing screen bar (30) can move relatively, the gaps between a second kneading guide plate (32) on the second profiling re-threshing screen bar (26) and a fourth kneading guide plate (33) on the fourth profiling re-threshing screen bar (30) are continuously changed to form a relatively parallel moving gap-changing kneading screen hole, materials can be kneaded when passing through the gap-changing kneading screen hole, and the first profiling re-threshing screen bar (24) and the third profiling re-threshing screen bar (29) are nested together to form a lower kneading screen, so that the working principle of the lower kneading screen is the same as that of the upper kneading screen;
the materials firstly fall into an upper kneading sieve formed by the second profiling re-threshing screen bar (26) and the fourth profiling re-threshing screen bar (30), small-size materials such as grains can smoothly pass through the gaps of the second kneading guide plate (32) and the fourth kneading guide plate (33) to realize the thorough sieving, when falling into the gaps of the second kneading guide plate (32) and the fourth kneading guide plate (34), the materials can be cut and kneaded by knife-shaped kneading teeth on the second kneading guide plate (32) and the fourth kneading guide plate (34), enter into a lower kneading sieve formed by the first profiling re-threshing screen bar (24) and the third profiling re-threshing screen bar (29) after being cut, and when passing through the gaps of the first kneading guide plate (35) and the third kneading guide plate (36), the materials can be extruded by semi-column kneading teeth on the first kneading guide plate (35) and the third kneading guide plate (36) to realize the further re-threshing screen bar size, and finally fall into a round hole for further separation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810562776.0A CN108686928B (en) | 2018-06-04 | 2018-06-04 | Synchronous different-amplitude nested rubbing type grain compound impurity removing vibrating screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810562776.0A CN108686928B (en) | 2018-06-04 | 2018-06-04 | Synchronous different-amplitude nested rubbing type grain compound impurity removing vibrating screen |
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| CN108686928A CN108686928A (en) | 2018-10-23 |
| CN108686928B true CN108686928B (en) | 2024-01-12 |
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| CN113304998B (en) * | 2021-07-29 | 2021-10-08 | 徐州华超矿山设备有限公司 | Mining vibrating screen |
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