CN101695694A - Large vibration separation screen - Google Patents
Large vibration separation screen Download PDFInfo
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- CN101695694A CN101695694A CN200910209820A CN200910209820A CN101695694A CN 101695694 A CN101695694 A CN 101695694A CN 200910209820 A CN200910209820 A CN 200910209820A CN 200910209820 A CN200910209820 A CN 200910209820A CN 101695694 A CN101695694 A CN 101695694A
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- screen
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- side bar
- screen box
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Abstract
The invention relates to a large vibration separation screen which comprises a screen box, an eccentric spindle, an eccentric spindle, a vibration exciter, a flexible drive coupling joint, a motor and an electric frame, wherein the screen box is provided with two boundary beam bodies and a main beam body, the two boundary beam bodies are symmetrically arranged at two sides of the main beam body, the diameter of the two boundary beam bodies is less than that of the main beam body; and lateral walls of the screen box are respectively connected with the two boundary beam bodies and the main beam body, and a tower type longitudinal beam is connected between an elastic screen plate and a tubular beam. A screen body of the large vibration separation screen is formed into a reasonable arch bridge body mechanical structure body so as to form a large rigidity box body with strong non-deformability. Reinforced ribs are not required to be arranged on the lateral walls, and the combination of all components is simple and reliable, thereby greatly simplifying the design manufacture process and the installation use condition. The screen body has less mass of vibration so that the required excited force is little, which enables the vibration strength born by the screen body to be greatly lowered, thereby meeting the requirements for the screening operation under various working conditions.
Description
Technical field
The present invention relates to a kind of device that solid is separated from solid, especially a kind of large vibration separation screen is applicable to the classification to various moist fine particulate levels, is applicable to that also mine and other need divide the classification of stage material.
Background technology
Large-scale vibrating screen be in, the key equipment of mammoth mill, at the grading effect and the reliability of the large-scale vibrating screen of moist fine particulate level classification, be the difficult problem that this sieve shape of restriction is developed always, be directly connected to the economic benefit in ore dressing plant.Homemade large-scale vibrating screen has many types, raw ore dry deep-sizing equipment especially, and owing to technical reason poor reliability, technological effect is bad, can't satisfy the actual needs that colliery and coal preparation plant produce.Traditional vibratory sieve is in the sieve nest design, spandrel girder all is to adopt isometrical beam to distribute, and such structure is undesirable to the very approaching large-scale vibrating screen structural mechanics characteristic of sieve nest length-width ratio, the sieve nest poor reliability, the volume and weight of sieve nest is all bigger, and corresponding sieve nest mass of vibration also strengthens.The width of sieve nest cross section surpasses 3 meters generally speaking, and the physical dimension of crossbeam, spandrel girder, buttress brace and weight will increase very big thereupon, can cause crossbeam and the processing of pipe beam, assembly technology etc. all to be difficult to guarantee thus.Like this because the restriction of material and mechanical processing technique technical merit, make the vibratory sieve frequent fault that ftractures of fracture of generator tube beam and side plate in use, not only influenced production efficiency, also had a strong impact on the service life of screening machine, this also is the large-scale vibrating screen structural parameters crucial factor that is difficult to break through for a long time.The ore dressing coal technology of China development at present is very fast, and is also increasing to the demand of large-scale screening plant efficiently, and large-scale vibrating screen mainly depends on import.So develop new sieve type and sized High-efficiency Screening Equipment, be the development of China's coal preparation technique technical merit and pressing for of large-scale industrial production always.
Patent documentation CN1186132C discloses a kind of large-scale vibrating screen, it is provided with the static-indeterminant mesh boom device between the screen box biside plate, this device is distributed on the super quiet support plate by the requirement of many beams according to exciting force, the girder system of being made up of many girders forms an inclusion body, and the mesh-beam exciting-vibration body is arranged on the compass screen surface top.Being of this invention contribution, the sieve nest rigidity of structure increases, and volume reduces, and joins the weight saving of shaking.But, its structure relative complex.
Summary of the invention
Technical problem to be solved by this invention is, overcomes deficiency of the prior art, provide a kind of simple in structure, bear the high large-scale vibrating screen of excitation intensity.
For achieving the above object, the present invention is by the following technical solutions: the present invention includes screen box, be supported on the elastic support body of forming by upper branching holder, lower support seat and spring under the screen box, base, vibrator, the flexible connection that is connected with vibrator, the motor that is connected with flexible connection, and motor frame.Described screen box is provided with two side bar bodies and a main beam, and two side bar bodies are arranged on the both sides of main beam, and the diameter of two side bar bodies is less than the diameter of main beam; Described screen box is provided with lateral wall, elasticity sieve plate and Guan Liang, and lateral wall is connected with main beam with two side bar bodies respectively, is connected with the turriform longeron between elasticity sieve plate and the Guan Liang; Described vibrator is made up of eccentric main axis and the eccentric free wheel that is arranged on the eccentric main axis two ends, is provided with bearing and bearing block between eccentric main axis and the described screen box; Described two side bar bodies and main beam, lateral wall and a turriform longeron constitute a big rigidity sieve nest.
As a kind of improvement of technique scheme, described two side bar bodies are symmetricly set on the both sides of main beam.
The present invention adopts three girder constructions, two side bar bodies are symmetricly set on the both sides of main beam, and the diameter of two side bar bodies makes sieve nest constitute a rational arch bridge mechanics structure less than the diameter of main beam, forms a big rigidity casing that non-deformability is very strong.This rigidity of structure is very big, and lateral wall does not need to be provided with reinforcement again, and the combination of each structural member is simple and reliable, has simplified the designing and manufacturing technique of vibratory sieve greatly and has installed and used technical conditions.Because it is simple in structure, the sieve nest mass of vibration is light, and required exciting force is little, and the oscillation intensity that sieve nest bore just lowers greatly.The fatigue resistance of sieve nest and reliability are improved and guarantee, have so just satisfied ginseng and have shaken body at the needs that bear the screening operation under the various working conditions of high oscillation intensity.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of screen box among the present invention;
Fig. 4 is the left view of Fig. 3.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention is supported on the elastic support body 2 under the screen box 1 mainly by screen box 1, base 3, and vibrator 4, the flexible connection 5 that is connected with vibrator 4, motor 6 that is connected with flexible connection 5 and motor frame 7 are formed.Elastic support body 2 is made up of upper and lower supporting base and spring, and this spring can adopt metal spring or complex spring.
As shown in Figure 3, Figure 4, screen box 1 is provided with the both sides that two side bar bodies 8 and 9, two side bar bodies 8 of a main beam are symmetricly set on main beam 9, and the diameter of two side bar bodies 8 is less than the diameter of main beam 9.Main beam 9 is crossbeams of screen box 1, is also referred to as spandrel girder and exciting beam.Main beam 9, side bar body 8 connect into arc distribution with lateral wall 11.Screen box 1 is provided with lateral wall 11, participates in the elasticity sieve plate 15 and the Guan Liang of different work, and lateral wall 11 is connected with a main beam 9 with two side bar bodies 8 respectively by articulation bolt, is connected with turriform longeron 14 between elasticity sieve plate 15 and the Guan Liang.Vibrator 4 adopts Uniaxle excitation, is made up of eccentric main axis 13 and the eccentric free wheel 10 that is arranged on eccentric main axis 13 two ends, is provided with bearing and bearing block 12 between eccentric main axis 13 and the screen box 1.Shaft strength is symmetry substantially, and the exciting force adjustment is to regulate by eccentric free wheel 10.Two side bar bodies 8 and main beam 9, lateral wall 11 and a turriform longeron 14 constitute a big rigidity sieve nest.
During work, the rotation of motor 6 is given eccentric main axis 13 by flexible connection 5 with transmission of torque, and eccentric main axis 13 drives the rotation of eccentric free wheel 10 parts such as grade on the axle again.In the rotation, the eccentric mass of the eccentric mass of eccentric main axis 13 and eccentric free wheel 10 has just produced needed exciting force.This exciting force makes whole sieve nest all produce vibration, thereby finishes the vibrosieve operation.
Two side bar bodies 8 and main beam 9 this three girder constructions, a few macrostructure spares such as lateral wall 11 and turriform longeron 14 are connected by welding or riveting process, constitute the device of shifting block type rigid body of a grid distribution.Because sieve nest main beam diameter is big, the architectural feature that side bar body diameter is little makes sieve nest constitute a rational arch bridge mechanics structure, forms a big rigidity casing that non-deformability is very strong.This sieve shape is not owing to support additional bending moment power and exciting force with fulcrum symmetry substantially on the structure, sieve nest is stressed rationally, and self rigidity is big, and vibration steadily.So this sieve shape both can have been born the big oscillation intensity that the big oscillation intensity of low frequency large amplitude also can be born the high frequency short arc.This rigidity of structure is very big, and lateral wall does not need to be provided with reinforcement again, and the combination of each structural member is simple and reliable, has simplified the designing and manufacturing technique of vibratory sieve greatly and has installed and used technical conditions.Because its structural advantage, the sieve nest mass of vibration is light, and required exciting force is little, and the oscillation intensity that sieve nest bore just lowers greatly.The fatigue resistance of sieve nest and reliability are improved and guarantee, have so just satisfied ginseng and have shaken body at the needs that bear the screening operation under the various working conditions of high oscillation intensity.
The present invention is best suited for moist various fine granularity classification, and visual different production capacity needs unit to use or the multimachine use that is installed in series in the use.Because the advantage of its reliability of structure and complete machine comprehensive mechanical performance can satisfy the needs of China large and medium-sized ore dressing coal preparation plant.At coal, fields such as metallurgy, chemical industry, environmental protection have extensive applicability.
Claims (2)
1. large vibration separation screen, comprise screen box (1), be supported on the elastic support body of forming by upper branching holder, lower support seat and spring (2) under the screen box (1), base (3), vibrator (4), the flexible connection (5) that is connected with vibrator (4), the motor (6) that is connected with flexible connection (5), and motor frame (7), it is characterized in that: described screen box (1) is provided with two side bar bodies (8) and a main beam (9), two side bar bodies (8) are arranged on the both sides of main beam (9), and the diameter of two side bar bodies (8) is less than the diameter of main beam (9); Described screen box (1) is provided with lateral wall (11), elasticity sieve plate (15) and Guan Liang, and lateral wall (11) is connected with main beam (9) with two side bar bodies (8) respectively, is connected with turriform longeron (14) between elasticity sieve plate (15) and the Guan Liang; Described vibrator (4) is made up of eccentric main axis (13) and the eccentric free wheel (10) that is arranged on eccentric main axis (13) two ends, is provided with bearing and bearing block (12) between eccentric main axis (13) and the described screen box (1); Described two side bar bodies (8) and a main beam (9), lateral wall (11) and turriform longeron (14) constitute a big rigidity sieve nest.
2. large vibration separation screen according to claim 1 is characterized in that: described two side bar bodies (8) are symmetricly set on the both sides of described main beam (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209820A CN101695694A (en) | 2009-10-22 | 2009-10-22 | Large vibration separation screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209820A CN101695694A (en) | 2009-10-22 | 2009-10-22 | Large vibration separation screen |
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| Publication Number | Publication Date |
|---|---|
| CN101695694A true CN101695694A (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910209820A Pending CN101695694A (en) | 2009-10-22 | 2009-10-22 | Large vibration separation screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500542A (en) * | 2011-11-24 | 2012-06-20 | 华南农业大学 | Vibration orifice plate type fruit size grader |
| CN104624488A (en) * | 2015-02-02 | 2015-05-20 | 江苏鹏飞集团股份有限公司 | Linear flip-flow screen |
| CN106799348A (en) * | 2015-11-26 | 2017-06-06 | 池州市方圆矿山机械制造有限公司 | A kind of straight-line oscillation vibratory sieve |
-
2009
- 2009-10-22 CN CN200910209820A patent/CN101695694A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500542A (en) * | 2011-11-24 | 2012-06-20 | 华南农业大学 | Vibration orifice plate type fruit size grader |
| CN104624488A (en) * | 2015-02-02 | 2015-05-20 | 江苏鹏飞集团股份有限公司 | Linear flip-flow screen |
| CN106799348A (en) * | 2015-11-26 | 2017-06-06 | 池州市方圆矿山机械制造有限公司 | A kind of straight-line oscillation vibratory sieve |
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Open date: 20100421 |