CN201261013Y - Centralized driving motion type relaxation sieve - Google Patents

Centralized driving motion type relaxation sieve Download PDF

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Publication number
CN201261013Y
CN201261013Y CNU2008200396121U CN200820039612U CN201261013Y CN 201261013 Y CN201261013 Y CN 201261013Y CN U2008200396121 U CNU2008200396121 U CN U2008200396121U CN 200820039612 U CN200820039612 U CN 200820039612U CN 201261013 Y CN201261013 Y CN 201261013Y
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CN
China
Prior art keywords
screen
screen box
box
sieve
compass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008200396121U
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Chinese (zh)
Inventor
赵跃民
刘初升
闫俊霞
冀连权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CNU2008200396121U priority Critical patent/CN201261013Y/en
Application granted granted Critical
Publication of CN201261013Y publication Critical patent/CN201261013Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a centralized driving flip-flow screen which comprises an upper screen box, a lower screen box, an elastic screen stencil formed by connecting a plurality of rectangle screen plates, a driving shaft, a belt wheel driving mechanism and a stand, wherein the upper screen box is parallel to the lower screen box, the upper screen box and the lower screen box have equal mass and are respectively hinged on the stand through swinging rods, a plurality of trapezoid supporting frames fixedly and mutually connected are arranged between the upper screen box and the lower screen box at intervals; the elastic screen stencil is arranged on the upper screen box, the belt wheel driving mechanism is arranged below the middle part of the driving shaft, and the driving shaft is four eccentric crank shafts which are respectively connected with crank sliding block mechanisms of the upper screen box and the lower screen box. The utility model completes the interference bending of the screen stencil and realizes the material screening through opposite motion of the two screen boxes, and adopts the structure that the number of the screen hole of the screen surface of the front end is less, the number of the screen hole of the screen surface of the middle section is medium, and the number of the screen hole of the screen surface of the tail section is more on the aspect of the screen hole arrangement so as to ensure the effects that the screen surface at the front end is not easy to break when conveying the materials and the integral screen surface screens uniformly, thereby having the advantages of simple structure, stable operation, energy consumption conservation, and long service life.

Description

Centralized driving formula flip flop screen
Technical field
The utility model relates to centralized driving formula flip flop screen, is particularly useful for the dry deep-sizing of coal preparation plant's moist fine particulate coal, also is applicable to the dry deep-sizing of other type material.
Background technology
Utilize vibratory sieve that coal is carried out sorting, become coal preparation plant's imperative equipment, but vibratory sieve rapid wear and deep screening gambling hole happen occasionally.The vibratory sieve that uses has multiple at present, the elastic rod multiple degrees of freedom collision type screen cloth and the method for sieving thereof that are applicable to the fine particle stage material dry screening are arranged, it is arranged in by many silk screens and constitutes screen cloth on the screen frame, it between silk screen and frame aperture matched in clearance, bump between silk screen and frame wall, the effect that the instantaneous acceleration effect of collision and compass screen surface material loading group are flowed constantly produces self clean-up action to silk screen, and improved the loose effect of material, screening efficiency and classification lower limit have been improved, but in time prolongation silk screen and the matched in clearance between frame aperture are blocked, lose self clean-up action.Also have the two flip flop screens that drive of two plastid independent support, it provides the Flexible sieve that is installed on the inside and outside screen box crossbeam to produce stretched and relaxed screening campaign.The compass screen surface acceleration greatly, plug-hole not, can be widely used in the material screening of industries such as metallurgy, mine, coal, building materials, municipal refuse and sewage purification, but the compass screen surface rapid wear outstanding weakness that is it.Have the large-scale circular shale shaker of two vibrators a kind of pair of large-scale circular shale shaker of vibrator is provided again, this circular shale shaker has two equidirectional rotations, the vibrator that the eccentric mass of eccentric shaft equates, and two vibrators connect by cog belt, keep being synchronized with the movement.Under the situation that does not increase the vibrator size, improved the oscillation intensity of vibratory sieve, but complex structure, manufacturing cost height, energy consumption are big.Next has a kind of that large-scale vibrating screen of redundancy meshwork beams excitation provides between the sieve plate of screen box both sides the static-indeterminant mesh boom device to be set, with at least one indeterminate support plate many girders are connected inclusion body of formation, increase respectively on the exciting power transmission shaft of indeterminate support plate both sides vibrator is set, combination property improves, vibration steadily, can satisfy the technological requirement of large-scale vibrating screen exciting device, but the complex structure of this machine, mass of vibration is big, energy consumption is big.
The utility model content
The purpose of this utility model is the deficiency that overcomes in the prior art, provides a kind of simple in structure, the power transmission shaft stress balance, and stable drive is avoided the compass screen surface fracture, improves the sieve plate centralized driving formula flip flop screen in service life.
For achieving the above object, the technical solution of the utility model is: it is by last screen box, following screen box, the Flexible sieve that is linked to be by a plurality of little rectangle sieve plates, power transmission shaft, pulley transmission mechanism and frame constitute, and wherein: it is parallel up and down with following screen box to go up screen box, and quality equates that last screen box and following screen box are articulated on the frame by fork respectively; Be interval with a plurality of trapezoidal bracing frame that is mutually permanently connected between last screen box and the following screen box; Flexible sieve is located on the screen box, and its leading portion compass screen surface sieve aperture is few than stage casing compass screen surface sieve aperture, and back segment compass screen surface sieve aperture is many than stage casing compass screen surface sieve aperture; Pulley transmission mechanism is located at the below, middle part of power transmission shaft, and power transmission shaft is same four sections eccentric crankshafts, and these four sections eccentric crankshafts link to each other with following screen box slider-crank mechanism with last screen box respectively.
Described trapezoidal bracing frame is by the semicircle crossbeam that is supported on below the Flexible sieve, and the fixing pressing plate of Flexible sieve is fixed in the channel crossbar on the screen box down and is connected the support bar formation of semicircle crossbeam and channel crossbar; Described bracing frame is provided with Stainless cap nut; The middle part of described power transmission shaft for same four sections eccentric crankshafts is provided with the belt pulley that links to each other with pulley transmission mechanism, and the axle of belt pulley the right and left is symmetrical, is processed with eccentric shaft part and eccentric shaft part respectively, and is processed with and is installed on the interior bearing block shaft part of bearing block; The ratio of the hole count of the leading portion compass screen surface sieve aperture of described Flexible sieve, stage casing compass screen surface sieve aperture and back segment compass screen surface sieve aperture is 0.9:1:1.1.
Beneficial effect: adopt the center to drive the power transmission shaft of four sections off-centre of same axle, utilize the suspension arrangement of crank block and formation quadric chain, two screen boxs are suspended on the quadric chain, adopt the Flexible sieve of a plurality of little rectangle sieve plate combinations, in the time of by two screen box relative motions, cause that elasticity on the screen cloth that little rectangle sieve plate is linked to be disturbs Qu Yundong and realize that material sieves thoroughly, because vibratory sieve compass screen surface acceleration is very big, compass screen surface is difficult for gambling hole, screening efficiency height.Adopt the bracing frame of semicolumn crossbeam, make sieve plate not have crooked dynamic stress, improved the reliability and the service life of sieve plate greatly as screen cloth.Because the power transmission shaft of power drive system adopts bent axle and belt pulley overall structure, realizes transmission placed in the middle and inertia force symmetry, not only whole stressed even, no torsional moment, reduced the error of installing, thus the whole aircraft reliability height, good combination property, motion is steady, and is convenient to install the location.Aspect compass screen surface hole count layout, adopt the structure that front end compass screen surface screen number is few, stage casing compass screen surface hole count placed in the middle, rear compass screen surface hole count is many, compass screen surface when guaranteeing the convey materials of front end compass screen surface is the even effect of saturating sieve of easy fracture and whole compass screen surface not, its complete machine structure is simple, easy to maintenance, energy efficient, the screening machine dynamic stress is low, be applicable to fields such as coal, metallurgy, chemical industry, environmental protection, have practicality widely.
Description of drawings
Fig. 1 is that centralized driving formula flip flop screen structure master of the present utility model looks schematic diagram.
Fig. 2 is a centralized driving formula flip flop screen structure schematic top plan view of the present utility model.
Fig. 3 is that schematic diagram is looked on a centralized driving formula flip flop screen structure of the present utility model left side.
Fig. 4 is a support frame structure schematic diagram of the present utility model.
Fig. 5 is a transmission shaft structure schematic diagram of the present utility model.
Among the figure: 1-interior screen box; 2-outer screen box; 3-Flexible sieve; 4-crank; 5-connecting rod; 6-power transmission shaft; 7-bracing frame; 7-1-half-cylindrical entablature; 7-2-pressing plate; 7-3-flute profile sill; 7-4-support bar; 7-5-Stainless cap nut; 8-frame; The 9-crank; The 10-bearing block, motor-11.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
Fig. 1 is shown in Figure 2, centralized driving formula flip flop screen is mainly by last screen box 1, down screen box 2, the elastic polyurethane screen cloth 3 that is linked to be by a plurality of little rectangle sieve plates, power transmission shaft 6, bracing frame 7, power transmission shaft 6 and the pulley transmission mechanism that connects screen box motion are up and down formed, quality such as last screen box 1 and following screen box 2, parallelly up and down be articulated on the frame 8 by connecting rod 5 respectively, constitute two quadric chains up and down.Pulley transmission mechanism is located at the below, middle part of power transmission shaft 6, and transmission mechanism comprises belt pulley motor 11, and the belt pulley 6-4 that is located at power transmission shaft 6 middle parts that links to each other with driving-belt is shown in Figure 3.Bracing frame 7 is spaced and is fixed between screen box 1 and the following screen box 2, bracing frame 7 is by the half-cylindrical entablature 7-1 that is fixed on the screen box 1, the fixedly pressing plate 7-2 of Flexible sieve 3 matches with half-cylindrical entablature 7-1, flute profile sill 7-3 under being fixed on the screen box 2, the support bar 7-4 of fixed interval lower and upper cross-member constitutes, and on each support bar 7-4 Stainless cap nut 7-5 is housed, and is shown in Figure 4, wherein figure (a) is the front view of bracing frame 7, and figure (b) is the side view of bracing frame 7.The half-cylindrical entablature 7-1 of bracing frame 7 tightly is posted on the bottom surface of Flexible sieve 3, and when Flexible sieve 3 was stressed, its bottom surface and half-cylindrical entablature 7-1 can not be subjected to the effect of shearing force.Shown in Figure 5, there is the belt pulley 6-4 that links to each other with pulley transmission mechanism at the middle part of power transmission shaft 6, and this belt pulley 6-4 and power transmission shaft 6 are connected as a single entity, and according to the size of power transmission shaft 6 sizes, belt pulley 6-4 also can be processed as split with power transmission shaft 6.The axle of the belt pulley 6-4 the right and left on the power transmission shaft 6 is symmetrical, is processed with eccentric shaft part 6-1 and eccentric shaft part 6-2 respectively, and is processed with the bearing block shaft part 6-3 that is installed in the bearing block, is the bent axle of four sections off-centre of same axle.Eccentric shaft part 6-2 connects and composes a slider-crank mechanism by the overarm brace of crank 4 and following screen box 2, eccentric shaft part 6-1 connects and composes a slider-crank mechanism by the base of crank 9 and last screen box 1, and four sections eccentric crankshafts link to each other with the slider-crank mechanism of last screen box 1 and following screen box 2 respectively.Flexible sieve 3 leading portion compass screen surface sieve apertures are few than stage casing compass screen surface sieve aperture, and back segment compass screen surface sieve aperture is many than stage casing compass screen surface sieve aperture, and the ratio of the hole count of the leading portion compass screen surface sieve aperture of Flexible sieve 3, stage casing compass screen surface sieve aperture and back segment compass screen surface sieve aperture is 0.9:1:1.1.
Operation principle: when the belt pulley 6-4 on the belt gear transmission drive shaft 6 that is located at power transmission shaft 6 belows, power transmission shaft 6 drives the relative motion that quadric chain is realized two screen boxs at the slider-crank mechanism that links to each other with two screen boxs 1,2 up and down, thereby makes Flexible sieve 3 disturb Qu Yundong.When two screen boxs 1,2 are done relative motion, cause that the Qu Yundong that disturbs on the screen cloth 3 that little rectangle elasticity sieve plate is linked to be carries out material and sieves thoroughly, disturb the mass motion that Qu Yundong constitutes by the secondary elasticity that the one-level mechanism kinematic and the little rectangle elasticity sieve plate of main frame is linked to be screen cloth 3, realize the layering and saturating sieve of material.Promptly adopt screening machine motion and compass screen surface to disturb the principle that Qu Yundong is separated, become elastic screen surface, elastic screen surface to make the vertical screen surface vibration screen designs with respect to the screening machine body, elastic screen surface will produce elastic movement in the screening machine motion process, thereby make compass screen surface reach big oscillation intensity, and the intensity of screening machine body vibration is less, under the prerequisite that guarantees the screening machine reliability, realize the screening process of compass screen surface large amplitude, big oscillation intensity.

Claims (5)

1. centralized driving formula flip flop screen, it is characterized in that: it is by last screen box (1), following screen box (2), the Flexible sieve (3) that is linked to be by a plurality of little rectangle sieve plates, power transmission shaft (6), pulley transmission mechanism and frame (8) constitute, and wherein: it is parallel up and down with following screen box (2) to go up screen box (1), and quality equates that last screen box (1) and following screen box (2) are articulated on the frame (8) by fork (5) respectively; Be interval with a plurality of trapezoidal bracing frame (7) that is mutually permanently connected between last screen box (1) and the following screen box (2); Flexible sieve (3) is located on the screen box (1), and its leading portion compass screen surface sieve aperture is few than stage casing compass screen surface sieve aperture, and back segment compass screen surface sieve aperture is many than stage casing compass screen surface sieve aperture; Pulley transmission mechanism is located at the below, middle part of power transmission shaft (6), and power transmission shaft (6) is the bent axle of same four sections off-centre, and these four sections eccentric crankshafts link to each other with following screen box (2) slider-crank mechanism with last screen box (1) respectively.
2. centralized driving formula flip flop screen according to claim 1, it is characterized in that: described trapezoidal bracing frame (7) is by being supported on the following semicircle crossbeam (7-1) of Flexible sieve (3), the fixing pressing plate (7-2) of Flexible sieve (3) is fixed in the channel crossbar (7-3) on the screen box (2) down and is connected support bar (7-4) formation of semicircle crossbeam (7-1) and channel crossbar (7-3).
3. centralized driving formula flip flop screen according to claim 2 is characterized in that: described bracing frame (7) is provided with Stainless cap nut (7-5).
4. centralized driving formula flip flop screen according to claim 1, it is characterized in that: the middle part of described power transmission shaft (6) for same four sections eccentric crankshafts is provided with the belt pulley (6-4) that links to each other with pulley transmission mechanism, the axle of belt pulley (6-4) the right and left is symmetrical, be processed with eccentric shaft part (6-1) and eccentric shaft part (6-2) respectively, and be processed with the bearing block shaft part (6-3) that is installed in the bearing block.
5. centralized driving formula flip flop screen according to claim 1 is characterized in that: the ratio of the hole count of the leading portion compass screen surface sieve aperture of described Flexible sieve (3), stage casing compass screen surface sieve aperture and back segment compass screen surface sieve aperture is 0.9:1:1.1.
CNU2008200396121U 2008-09-01 2008-09-01 Centralized driving motion type relaxation sieve Expired - Fee Related CN201261013Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200396121U CN201261013Y (en) 2008-09-01 2008-09-01 Centralized driving motion type relaxation sieve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200396121U CN201261013Y (en) 2008-09-01 2008-09-01 Centralized driving motion type relaxation sieve

Publications (1)

Publication Number Publication Date
CN201261013Y true CN201261013Y (en) 2009-06-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580921A (en) * 2012-03-12 2012-07-18 王新文 Deep sieving machine
CN106269489A (en) * 2016-10-19 2017-01-04 中国矿业大学 A kind of monolateral drive-type is rocking sieve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580921A (en) * 2012-03-12 2012-07-18 王新文 Deep sieving machine
CN106269489A (en) * 2016-10-19 2017-01-04 中国矿业大学 A kind of monolateral drive-type is rocking sieve
CN106269489B (en) * 2016-10-19 2018-07-06 中国矿业大学 A kind of unilateral drive-type swinging screen

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090624

Termination date: 20120901

C17 Cessation of patent right