CN101502833A - High-frequency dewatering screen - Google Patents
High-frequency dewatering screen Download PDFInfo
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- CN101502833A CN101502833A CNA2008101539930A CN200810153993A CN101502833A CN 101502833 A CN101502833 A CN 101502833A CN A2008101539930 A CNA2008101539930 A CN A2008101539930A CN 200810153993 A CN200810153993 A CN 200810153993A CN 101502833 A CN101502833 A CN 101502833A
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Abstract
The invention relates to a high-frequency dewatering screen mainly used for gradation, slime separation, dehydration and medium removal of coals and also for screening and grading other minerals. The linear screen manufactured by domestic enterprises has low technical content, poor manufacturing level, complex structure, lots of failures, short service life and bad standard interchangeability, is difficultly maintained and aged, and is not improved; and the product cannot meet higher utilization requirements. For solving the disadvantages of the prior art, the invention optimally designs the high-frequency dewatering screen by a constant-thickness screening principle and a linear vibration theory so that the vibration parameters, such as amplitude, frequency and exciting force, are rationally and perfectly configured according to screening technological requirements and scientific experimental results, avoids the inherent frequencies of all levels of the screen body, reduces the resonant stress negative influence of all parts of the screen body, improves the service performance of the screening machine, and prolongs the fatigue life of the screening machine. The screen has complete varieties and can adequately meet the screening technological requirements of different feeding characteristics and different handling capacities.
Description
Technical field
The present invention relates to a kind of vibratory sieve, particularly a kind of high-frequency dewatering screen.
Background technology
In recent years, along with China's economy and science and technology develop rapidly, material sieving technology is had higher requirement, press for screening plant and develop, press for that performance is more advanced, operation is more reliable, dewatering efficiency is higher, disposal ability is bigger, longer service life novel high-frequency dewatering screen to high efficiency.Because at present the high-frequency dewatering screen produced of domestic enterprise is with low content of technology, manufacture level is poor, complex structure, fault is many, maintenance is difficult, the life-span is short, standardization interchangeability is poor, the aging of product lacks improvement and improves, compare the very big gap of existence with world level, can not satisfy screening newly-built design of enterprise and the higher instructions for use of long-established enterprise's technological transformation, institute thinks improves China's equipment manufacture technical merit, adapt to the requirement of big production of modernization and scientific and technological progress, must improve the quality of homemade high-frequency dewatering screen, update autonomous innovation.
Summary of the invention
The present invention is directed to the existing deficiency of existing technology, a kind of novel high-frequency dewatering screen is provided.Be mainly used in coal dehydration de-mediated desliming, also be applicable to the sieving and grading of other mineral.Applicable line Theory of Vibration of the present invention is optimized design, vibration parameters such as amplitude, frequency, exciting force rationally are provided with by sieving technology requirement and scientific experimentation result, just right, avoid sieve nest intrinsic frequencies at different levels, reduce the stressed negative influence of resonance at each position of sieve nest, improve the screen(ing) machine serviceability, prolong screen(ing) machine fatigue life.Lateral wall, crossbeam, crossbeam and each rigidity of structure is big, intensity is high, stressed distribution is rationally balanced, safety coefficient is big.Exciting beam, beam structure design original, and the whole penetrations of principal weld carry out one-level UT flaw detection, and welding stress is eliminated in heat treatment fully, carries out Precision Machining by the large-sized numerical control Mechanical Processing Center.The vibrating motor of Specialty Design and retrofit manufacturing is installed on the exciting beam, and the reverse high-speed synchronous rotation of a pair of vibrating motor reliably passes to sieve body power and straight-line oscillation power reposefully.Beam surface coating high standard wear-and corrosion-resistant glue fat, more effective protection crossbeam is not frayed.The side plate arrangement of reinforcement is rationally attractive in appearance, stress coefficient is little, rigidity is big, outward appearance is novel.
The present invention is a kind of high frequency straight-line oscillation screening machine, comprise ten surplus a specification, have following characteristics: the simple structure Compact Design reaches 8 years service life, and the general homemade vibratory sieve life-span was less than 5 years; In light weight, power consumption is few, the dewatering efficiency height, and the material disposal ability is big; Universal component interchangeability is strong, safeguards to save time conveniently; Handling safety is reliable; Sieve type kind is complete, can fully satisfy the sieving technology requirement of different pan feeding characteristics and different disposal amount.
Solution of the present invention is:
A kind of high-frequency dewatering screen mainly is made up of sieve nest (1), vibrating motor (2), buffer spring (3), sieve plate (4).
(1) sieve nest: mainly be made up of lateral wall, crossbeam, exciting beam, draw-beam etc., each parts selects for use high-quality structural steel to manufacture meticulously, and crossbeam, exciting beam, the whole heat treatments of draw-beam postwelding use senior Digit Control Machine Tool to carry out machined.Select the high-quality ring-grooved rivet then for use, adopt advanced cleaning sealing assembly technology the sieve nest rivet clasp.Side plate does not have weld seam, and crossbeam, exciting beam section coefficient is big, rigidity is big.Beam surface is coated with wear-resisting glue fat, and the sieve nest surface treatment sprays the polyester protective paint after reaching the Sa2.5 level.The sieve nest manufacturing is assembled each procedure and is all passed the searching test and check on.The sieve nest structure can accomplish to avoid each parts to split and wear and tear under high load capacity high-frequency vibration duty by optimal design, has higher anti-fatigue ability, reliability and service life.
(2) vibrating motor: up-to-date quality material and advanced technologies manufacturing, bearing are the SKF special cylindrical roller bearing, and lubricating grease adopts world's brand high standard lubricating grease, and good seal, temperature rise is low, maintenance is few.Self-synchronization is strong, and the phase mutual energy responds capture frequency rapidly and rotates synchronously.Staring torque is big, quickens can make screen(ing) machine spend resonance region rapidly soon, enters duty with rated frequency.Work moment and the big I of exciting force are by changing the eccentric block angle or using frequency converter to adjust as required.The winding cable insulate, high temperature resistant, vibration resistance, wear-resistant, endurance.Dependable performance, the degree of protection height can guarantee the continuity that the user produces, few shutdown, fecund go out.
(3) buffer spring: vibratory sieve body and mounting base adopt the steel spiral compression spring to carry out anti-vibration and shock.Both ends of the spring adds rubber blanket, reduces the abrasion and the friction noise of spring and steel spring seat board.Spring rate is little, makes the basis bear dynamic loading and reduces, and damping efficiency is more than 98%.The spring wire footpath is enough, makes spring more endurance, non-frangibility.
(4) sieve plate: the patent No. that adopts Tianjin Weide Mine Equipment Co., Ltd. to produce is the standard module polyurethane Combined sieve board of ZL200620150160.5, this sieve plate systems technology is leading in the world, sieve-plate aperture ratio is big, the sieve seam is difficult for stopping up, screening efficiency height, intensity are very much not yielding, wear-resistant long service life, easy accessibility is in liberal supply.
Operation principle of the present invention is: the two identical parameters vibrating motors that symmetry is installed on the exciting beam connect electric synchronous backward rotation, produce equal and opposite in direction centrifugal force separately, two power are cancelled out each other on the contrary at the branch force direction of vertical vibration direction, form straight-line oscillation power at the consistent superposition mutually of the branch force direction of parallel direction of vibration, straight-line oscillation power moves in circles continuous action on sieve nest, sieve nest is vibrated on buffer spring, buffer spring reduces the dynamic load of sieve nest to the screen(ing) machine brace foundation simultaneously, sieve nest drives compass screen surface synchronous vibration, power is passed to sieve go up feed, impact feed and throw the compacting dehydration of advancing at compass screen surface, feed is successively imported from the pan feeding chute, carry out processed by compass screen surface, screenings enters sieve chute down, and oversize enters the discharge chute.
The present invention selects higher impelling intensity and the better patent sieve plate of configuration for use according to different pan feedings, and descending being easy to of 45 ° of pan feeding section compass screen surface angles sluice, and discharge zone compass screen surface angle-5 is ° up to be beneficial to dehydration, thereby can obviously improve the treating capacity and the dewatering efficiency of sieve.
The present invention carries out tight test and running test run in continuous 24 hours in factory, adopts the senior FFT specialty analysis instrument of German import to carry out frequency response and dynamic analysis, guarantees the reliable and product high-quality of maneuvering performance.Its working system is S1, guarantees steady and continuous work in 24 hours.And operating noise is low, and sound level is lower than 75 decibels, operates steadily.Carried out improving according to long-term production practice with by the finite element force analysis and improved, manufacture and design meet GB Machine Design standard, the international electrical standard of IEC, JB/T9022-1999[vibratory sieve design specification] and the JB/T5496-2004[vibratory sieve make general technical specifications] reach the requirement of relevant coal preparation machine industry standard.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention.
Fig. 2 is the profile of the embodiment of the invention.
The specific embodiment
Referring to Fig. 1, shown in Figure 2, the two identical parameters vibrating motors that symmetry is installed on the exciting beam connect electric synchronous backward rotation, produce equal and opposite in direction centrifugal force separately, two power are cancelled out each other on the contrary at the branch force direction of vertical vibration direction, form straight-line oscillation power at the consistent superposition mutually of the branch force direction of parallel direction of vibration, straight-line oscillation power moves in circles continuous action on sieve nest, sieve nest is vibrated on buffer spring, buffer spring reduces the dynamic load of sieve nest to the screen(ing) machine brace foundation simultaneously, sieve nest drives compass screen surface synchronous vibration, power is passed to sieve go up feed, impact feed and throw the compacting dehydration of advancing at compass screen surface, feed successively from the input of pan feeding chute, carries out processed by compass screen surface, screenings enters sieve chute down, and oversize enters the discharge chute.
Claims (1)
1, a kind of high-frequency dewatering screen, form by sieve nest (1), vibrating motor (2), buffer spring (3), sieve plate (4), sieve nest design pan feeding section compass screen surface angle is that 45 ° of descending being easy to sluice, discharge zone compass screen surface angle-5 is ° up to be beneficial to dehydration, and select for use high-quality structural steel to make, the surface is coated with wear-resisting glue fat, and the sieve nest surface treatment sprays the polyester protective paint after reaching the Sa2.5 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101539930A CN101502833A (en) | 2008-12-11 | 2008-12-11 | High-frequency dewatering screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101539930A CN101502833A (en) | 2008-12-11 | 2008-12-11 | High-frequency dewatering screen |
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| Publication Number | Publication Date |
|---|---|
| CN101502833A true CN101502833A (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101539930A Pending CN101502833A (en) | 2008-12-11 | 2008-12-11 | High-frequency dewatering screen |
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| CN (1) | CN101502833A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269470A (en) * | 2015-06-26 | 2017-01-04 | 沈阳铝镁设计研究院有限公司 | A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique |
| CN106677819A (en) * | 2017-01-11 | 2017-05-17 | 河南铁福来装备制造股份有限公司 | Light crawler traveling type coal-water separation vibrating screen for coal mine tunnel |
-
2008
- 2008-12-11 CN CNA2008101539930A patent/CN101502833A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269470A (en) * | 2015-06-26 | 2017-01-04 | 沈阳铝镁设计研究院有限公司 | A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique |
| CN106677819A (en) * | 2017-01-11 | 2017-05-17 | 河南铁福来装备制造股份有限公司 | Light crawler traveling type coal-water separation vibrating screen for coal mine tunnel |
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Open date: 20090812 |