CN113477512B - Shaker - Google Patents

Abstract

The invention discloses a vibrating screen, comprising: at least two unit screens, each unit screen comprising: a screen box having a screen surface extending along a first direction and a second direction, and located on the screen surface Both ends in the first direction have opposite feeding ends and discharging ends; wherein, the screen surface is an inclined surface and the height of the feeding end is higher than the height of the discharging end; at least one vibration motor, Installed on the screen box along the second direction; wherein, at least two unit screens are arranged along the first direction, and in two adjacent unit screens, the discharge end of one of the unit screens is connected to the other unit The feeding ends of the sieves are connected so that the screen surfaces of at least two unit sieves are on the same plane; wherein, the vibration intensity of each unit sieve is different, and along the first direction and based on the height, as the height increases Reduce vibration intensity; wherein, the first direction and the second direction are perpendicular to each other.

Description

Shaker

technical field

The invention relates to the field of material screening equipment, in particular to a vibrating screen.

Background technique

Screening technology is widely used in coal, metallurgy, petroleum, chemical industry, building materials, environmental protection and other fields. It is a key link in the production process of most enterprises and is responsible for the functions of classification, dehydration, desliming and descaling. When using the traditional vibrating screen with equal vibration intensity for material depth screening, the vibration intensity of the feeding end and the discharging end are equal, and the material at the feeding end is prone to accumulation, the thickness of the material layer increases, the loosening and layering become slower, and the screening efficiency is improved. decrease, the screening effect deteriorates; the thickness of the material layer at the discharge end becomes thinner rapidly due to the high vibration intensity, the material moves too fast, the residence time on the screen surface is short, and the screen cannot pass through the screen in time, the processing capacity per unit area is small, and the utilization rate of the screen surface is low , The screening effect is poor, which seriously restricts the large-scale improvement of coal quality and efficiency in my country.

Contents of the invention

In response to the problems and demands raised above, this solution proposes a vibrating screen, which can achieve the above-mentioned technical purpose and bring many other technical effects due to the adoption of the following technical features.

The present invention proposes a vibrating screen, comprising:

At least two unit sieves, each unit sieve comprising:

The screen box has a screen surface extending along the first direction and the second direction, and is located at both ends of the screen surface in the first direction and has opposite feeding ends and discharging ends; wherein, the screen The mesh surface is an inclined surface and the height of the feed end is higher than the height of the discharge end;

at least one vibration motor installed on the screen box along the second direction;

Wherein, at least two unit sieves are arranged along the first direction, and in two adjacent unit sieves, the discharge end of one of the unit sieves is connected with the inlet end of the other unit sieve, so that at least two units The screen surface of the sieve is on the same plane;

Wherein, the vibration intensity of each unit screen is different, and along the first direction and based on the height, the vibration intensity decreases as the height decreases;

Wherein, the first direction and the second direction are perpendicular to each other.

In this technical scheme, the materials are input to the vibrating screen, and the vibration intensity (amplitude and frequency of the excitation motor) of each unit screen is adjusted so that along the first direction and based on the height, the vibration intensity decreases with the height Reduce, the material moves along the screen surface, among them, the vibration intensity of the unit sieve input by the material is high, and the movement speed of the material is accelerated, which is conducive to the rapid loosening and stratification of the material fed into the unit sieve, strengthening the effect of the sieve, and the output of the material The vibration intensity of the unit sieve is low, which reduces the movement speed of fine particle materials, prolongs the sieving time, improves the screening efficiency, and realizes equal thickness screening. The vibrating screen achieves high-efficiency deep screening through the stepwise change of vibration intensity, high utilization rate of screen surface, large processing capacity per unit area, good screening effect, simple structure, stable and efficient, and easy to use.

In addition, according to the vibrating screen of the present invention, it can also have the following technical features:

In an example of the present invention, the screen box includes:

two side panels extending along the first direction and oppositely disposed in the second direction;

an exciting beam arranged along the second direction and connecting the two side plates;

Wherein, the vibration excitation motor is fixedly connected to the vibration excitation beam, and the screen surface is connected between two side plates.

In an example of the present invention, the excitation beam can be adjusted to move in a first direction relative to the side plate.

In an example of the present invention, in both the excitation beam and the side plate, a waist hole is arranged in a first direction along one of them, and a fastener is coupled to the other of them, The relative position between the excitation beam and the side plate is adjusted by the fastener.

In an example of the present invention, the screen box also includes:

At least two reinforcing beams are respectively arranged at the feeding end and the discharging end of the screen box, wherein the two ends of each reinforcing beam are respectively fixedly connected with two adjacent side plates.

In an example of the present invention, each unit screen further includes: at least two support beam assemblies,

Each support beam assembly has at least two support beams, and each support beam is correspondingly connected to both sides of the reinforcing beam;

Wherein, the height of each support beam assembly is different in the height direction, and decreases along the first direction from the feeding end to the discharging end.

In an example of the present invention, it also includes: a shock absorber,

The shock absorber is installed between the support beam and the reinforcement beam, and is configured to make the support beam and the reinforcement beam move relative to each other along the height direction through deformation.

In one example of the present invention, the shock absorber is a compression spring,

An installation clip is fixed on the reinforcing beam, and the installation clip has a first protrusion extending toward the support beam;

A second protrusion opposite to the first protrusion and extending toward the reinforcement beam is formed on the support beam;

Both ends of the compression spring are sheathed on the first protrusion and the second protrusion respectively.

In an example of the present invention, it also includes: a flexible board,

It is arranged between two adjacent unit sieves, and one side end is connected with the discharge end of one of the unit sieves, and the other side end is connected with the input end of the other unit sieve.

In an example of the present invention, it also includes: a base,

The base includes:

at least two crossbars extending along a third direction and oppositely arranged in a second direction;

at least one longitudinal bar extending along the second direction and coupled to adjacent two transverse bars in the third direction;

Wherein, each of the unit screens can be adjusted and moved in a first direction relative to the cross bar;

Wherein, the third direction is perpendicular to the second direction.

Hereinafter, the best embodiments for implementing the present invention will be described in more detail with reference to the accompanying drawings, so that the features and advantages of the present invention can be easily understood.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments of the present invention will be briefly introduced below. Wherein, the drawings are only used to show some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

1 is a perspective view of one direction of a vibrating screen according to an embodiment of the present invention;

2 is a perspective view of another direction of the vibrating screen according to an embodiment of the present invention;

Fig. 3 is a perspective view in another direction of the vibrating screen according to the embodiment of the present invention.

List of reference signs:

Vibrating screen 1000;

Unit sieve 100;

Screen box 110;

screen surface 111;

Feed end 1111;

discharge end 1112;

side panels 112;

waist hole 1121;

Exciting beam 113;

Fastener 1131;

reinforcement beam 114;

Install ferrule 1141;

first protrusion 1142;

Vibration motor 120;

corbel assembly 130;

support beam 131;

second protrusion 1311;

Vibration damping member 140;

flexible board 200;

Base 300;

cross bar 310;

Chute 311;

Longitudinal rod 320;

first direction F;

the second direction S;

The third direction T;

Height direction H.

detailed description

In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same reference numerals in the figures represent the same parts. It should be noted that the described embodiments are some of the embodiments of the present invention, but not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, "a" or "a" and the like do not necessarily imply a numerical limitation. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The present invention proposes a vibrating screen 1000, as shown in Figures 1 to 3, comprising:

At least two unit sieves 100, each unit sieve 100 comprising:

The screen box 110 has a screen surface 111 extending along the first direction F and the second direction S, and is located at both ends of the screen surface 111 in the first direction F and has opposite feeding ends 1111 and discharging ends. end 1112; wherein, the screen surface 111 is an inclined surface and the height of the feed end 1111 is higher than the height of the discharge end 1112; that is, the material can rely on its own gravity from the feed end 1111 It is conveyed to the discharge end 1112 and screened by the screen surface 111.

At least one vibration-exciting motor 120 is installed on the screen box 110 along the second direction S; in other words, a plurality of vibration-exciting motors 120 may be arranged at intervals along the first direction F.

Wherein at least two unit sieves 100 are arranged along the first direction F, and in two adjacent unit sieves 100, the discharge end 1112 of one of the unit sieves 100 is in contact with the feed end 1111 of the other unit sieve 100. Connection, so that the screen surfaces 111 of at least two unit sieves 100 are on the same plane; The vibration intensity of each unit sieve 100 can be adjusted respectively; at least two unit sieves 100 form a vibrating screen 1000, so that the feed end 1111 and the discharge end 1112 of the head and tail unit sieves 100 are respectively the feed end 1111 and the discharge end of the vibrating screen 1000 End 1112, that is, the material is input by the unit sieve 100 with higher vibration intensity and output by the unit sieve 100 with lower vibration intensity;

Wherein, the vibration intensity of each unit sieve 100 is different, and along the first direction F and based on the height, the vibration intensity decreases as the height decreases; that is, when the same unit sieve 100 is configured with two or When there are more than two excitation motors 120, the amplitude and frequency of each excitation motor 120 are equal, that is, the vibration intensity of the same unit sieve 100 is consistent;

The input unit sieve 100 has a high vibration intensity, and the material movement speed is accelerated, which is conducive to the rapid loosening and stratification of the material in the input unit sieve 100, and strengthens the effect of the sieve, and the output unit sieve 100 has a low vibration intensity, reducing fine The movement speed of granular materials prolongs the screening time and improves the screening efficiency;

It can be understood that the variation (amplitude and frequency) of the vibration intensity of the multi-unit sieve 100, the amplitude is regulated by the mass and angle of the eccentric mass of the excitation motor 120, the frequency is regulated by a multi-functional frequency converter, and by adjusting the amplitude and the excitation frequency The size makes the vibration intensity of multiple unit sieves 100 change step by step, so as to realize the equal thickness screening of the material group;

Wherein, the first direction F and the second direction S are perpendicular to each other.

Specifically, the material is input to the vibrating screen 1000, and the vibration intensity (amplitude and frequency of the excitation motor 120) of each unit screen 100 is adjusted so that the vibration along the first direction F and with the height as the reference, along with the reduction of the height The strength is reduced, and the material moves along the screen surface 111. Among them, the unit sieve 100 where the material is input has a high vibration intensity, and the material movement speed is accelerated, which is conducive to the rapid loosening and stratification of the material on the input unit sieve 100, and strengthens the screening effect. , The vibration intensity of the unit sieve 100 for material output is low, which reduces the movement speed of fine particle materials, prolongs the time of sieving, improves the screening efficiency, and realizes equal thickness screening. The vibrating screen 1000 achieves high-efficiency deep screening through stepwise changes in vibration intensity, has high utilization rate of the screen surface 111, large processing capacity per unit area, good screening effect, simple structure, stability and high efficiency, and convenient use.

In an example of the present invention, the screen box 110 includes:

Two side panels 112 extending along the first direction F and oppositely disposed in the second direction S;

the excitation beam 113 arranged along the second direction S and connecting the two side plates 112;

Wherein, the vibration excitation motor 120 is fixedly connected to the vibration excitation beam 113, and the screen surface 111 is connected between two side plates 112;

That is to say, the two side plates 112 are connected by the excitation beam 113, so that the screen box 110 forms a whole, and the excitation motor 120 is arranged on the excitation beam 113, and the vibration excitation motor 120 drives the screen box 110 to vibrate, and Connect the screen surface 111 between the two side plates 112, for example, the screen can be fixed by welding or connecting fasteners; 120 drives the screen surface 111 located at its lower end to vibrate to realize the screening of the screen surface 111 .

In an example of the present invention, the vibration excitation beam 113 can be adjusted to move in the first direction F relative to the side plate 112; 120 power size (especially two or more excitation motors 120, so that the unit sieve 100 matches the best vibration intensity, and then realizes equal-thickness screening of the screen surface 111.

The adjustment of the position of the excitation beam 113 can be based on the accumulation of materials on the screen surface 111, and the position arrangement of the vibration motor of the unit screen 100 can be preferentially adjusted.

In an example of the present invention, in both the excitation beam 113 and the side plate 112, a waist hole 1121 is arranged along the first direction F of one of them, and a waist hole 1121 is connected to the other of them. The fastener 1131 is used to adjust the relative position between the excitation beam 113 and the side plate 112 through the fastener 1131;

Preferably, the fasteners 1131 or the waist holes 1121 are arranged symmetrically in the second direction S;

One is: along the first direction F, waist holes 1121 are arranged on the corresponding positions of the two side plates 112, and the two ends of the exciting beam 113 in the second direction S are respectively connected with fasteners 1131. The part 1131 is adapted to the waist hole 1121, and the relative movement and fixation of the excitation beam 113 and the side plate 112 can be realized by adjusting the tightness of the fastening part 1131.

The second is: on both sides of the excitation beam 113 in the second direction S, waist holes 1121 are respectively arranged along the first direction F, and correspondingly, tight The fastener 1131 is adapted to the waist hole 1121 , and the relative movement and fixation of the excitation beam 113 and the side plate 112 are realized by adjusting the tightness of the fastener 1131 .

It can be understood that the waist hole 1121 has an oblong structure, specifically, the waist hole 1121 of the oblong structure is two points located on the same straight line on the selected circle or arcs at both ends of the selected circle that are symmetrical about the circle, A figure formed by stretching a circle along a straight line or an arc. The waist hole 1121 can make the fastening member 1131 on the excitation beam 113 move in the first direction F along the waist hole 1121, so that the position of at least one excitation motor 120 on the unit screen 100 is adjustable, thus reasonable Allocate the power of the vibration motors 120 (especially two or more vibration motors 120 ), so that the unit screen 100 matches the best vibration intensity, and then achieve equal-thickness screening of the screen surface 111 .

In an example of the present invention, the screen box 110 further includes:

At least two reinforcing beams 114 are respectively arranged at the feeding end 1111 and the discharging end 1112 of the screen box 110, wherein the two ends of each reinforcing beam 114 are respectively fixedly connected with two adjacent side plates 112;

Specifically, the reinforcing beam 114 is a tubular structure, and the two ends of the reinforcing beam 114 are fixedly connected (for example, welded) to the flanges, and the flanges are connected to the two side plates 112 by bolts respectively. 114 can improve the overall structural strength of the screen box 110.

In an example of the present invention, each unit screen 100 further includes: at least two beam assemblies 130,

Each support beam assembly 130 has at least two support beams 131, and each support beam 131 is correspondingly connected to both sides of the reinforcement beam 114;

Wherein, the height of each support beam assembly 130 in the height direction H is different, and is lowered along the first direction F from the feeding end 1111 to the discharging end 1112;

Taking one unit sieve 100 corresponding to two reinforcing beams 114 as an example, the supporting beams 131 correspondingly connected on both sides of the same reinforcing beam 114 have the same height in the height direction H, and are directed from the feeding end 1111 to the discharging end 1112. The height of the support beam 131 gradually decreases; in short, the inclination of the screen surface 111 is obtained by supporting the support beam assembly 130;

In order to facilitate the connection between the support beam assembly 130 and the excitation beam 113 , each excitation beam 113 passes through the second direction S and protrudes from the corresponding side plate 112 .

Preferably, the height of the support beam assembly 130 is an adjustable structure, such as a hydraulic cylinder, an air cylinder, etc., so that the inclination angle of the unit screen 100 can be flexibly adjusted.

In an example of the present invention, it also includes: a shock absorber 140,

The shock absorber 140 is installed between the support beam 131 and the reinforcement beam 114, and is configured to make the support beam 131 and the reinforcement beam 114 move relative to each other along the height direction H through deformation; wherein, The height direction H is perpendicular to the second direction S and the third direction T.

Vibration intensity of the vibrating screen 1000 can be reduced by disposing the vibration-absorbing member 140, which can protect the vibrating screen 1000 and reduce noise generation. For example, the shock absorbing element 140 is a spring element, a shrapnel element, a rubber element and the like.

In an example of the present invention, the shock absorber 140 is a compression spring,

An installation ferrule 1141 is fixed on the reinforcing beam 114, and the installation ferrule 1141 has a first protrusion 1142 extending toward the support beam 131;

A second protrusion 1311 opposite to the first protrusion 1142 and extending toward the reinforcement beam 114 is formed on the support beam 131 ;

The two ends of the compression spring are sleeved on the first protrusion 1142 and the second protrusion 1311 respectively;

The installation ferrule 1141 is fastened and connected to both sides of the reinforcement beam 114 by bolts, and the two sides of the compression spring are sleeved on the first protrusion 1142 of the installation ferrule 1141 and the second protrusion 1311 of the support beam 131 respectively, The compression spring can be fixed to prevent it from slipping during the vibration damping process, and the reliability is higher.

In an example of the present invention, it also includes: a flexible plate 200,

It is arranged between two adjacent unit sieves 100, and one side end is connected with the discharge end 1112 of one of the unit sieves 100, and the other side end is connected with the feed end 1111 of the other unit sieve 100;

Because the vibration amplitude and frequency of the excitation motor 120 on each unit screen 100 are different, so in the working process of the vibrating screen 1000, the vibration amplitude and frequency between the unit screens 100 are not the same, which makes two adjacent unit screens 100 There is a variable displacement between them, and the connection of the flexible plate 200 can meet the relative displacement change between two adjacent unit screens 100, avoid the occurrence of fracture, and ensure the continuity of the material and the uniformity and stability of the material flow during the screening process. sex. For example, the flexible plate 200 may be a polyurethane, and since the polyurethane has wear resistance, the strong friction between the material and the flexible plate 200 may prevent the flexible plate 200 from being worn.

In an example of the present invention, it also includes: a base 300,

The base 300 includes:

at least two crossbars 310 extending along the third direction T and oppositely arranged in the second direction S;

at least one longitudinal bar 320 extending along the second direction S and connecting two adjacent transverse bars 310 in the third direction T;

Wherein, each of the unit screens 100 can be adjusted and moved in the first direction F relative to the cross bar 310;

Wherein, the third direction T is perpendicular to the second direction S and the height direction H;

Specifically, on each cross bar 310 and along the third direction T, the chute 311 is extended, and the support beam 131 is connected with the chute 311 through the fastening coupling at the lower end, so as to realize the unit screen 100 on the base 300 position adjustment;

In order to adjust the inclination angle of the screen surface 111 of two adjacent unit sieves 100, and make it on the same plane, plus errors in the actual installation process, it is necessary to adjust the position of two adjacent unit sieves 100 to meet condition of the same plane.

The exemplary implementation of the vibrating screen 1000 proposed by the present invention has been described in detail above with reference to preferred embodiments, but those skilled in the art can understand that, without departing from the concept of the present invention, the above specific embodiments can be Various variations and modifications can be made, and various combinations of various technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims (9)

1. A vibrating screen, characterized in that, comprising: At least two unit sieves (100), each unit sieve (100) comprising: The screen box (110) has a screen surface (111) extending along the first direction (F) and the second direction (S), and is located at the side of the screen surface (111) in the first direction (F) The two ends have opposite feed end (1111) and discharge end (1112); wherein, the screen surface (111) is an inclined surface and the height of the feed end (1111) is higher than that of the discharge end the height of (1112); at least one vibration motor (120), installed on the screen box (110) along the second direction (S); A flexible plate (200), which is arranged between two adjacent unit sieves (100), and one side end is connected with the discharge end (1112) of one of the unit sieves (100), and the other side end is connected with the discharge end (1112) of one of the unit sieves (100). The feeding end (1111) of another unit sieve (100) is connected; Wherein, at least two unit sieves (100) are arranged along the first direction (F), and in two adjacent unit sieves (100), the discharge end (1112) of one of them The feeding end (1111) of a unit sieve (100) is connected, so that the screen surfaces (111) of at least two unit sieves (100) are on the same plane; Wherein, the vibration intensity of each unit sieve (100) is different, and along the first direction (F) and based on the height, the vibration intensity decreases as the height decreases; Wherein, the first direction (F) and the second direction (S) are perpendicular to each other. 2. The vibrating screen according to claim 1, characterized in that, The sieve box (110) includes: two side panels (112) extending along the first direction (F) and oppositely disposed in the second direction (S); an excitation beam (113) arranged along the second direction (S) and coupled to the two side plates (112); Wherein, the vibration excitation motor (120) is fixedly connected to the vibration excitation beam (113), and the screen surface (111) is connected between two side plates (112). 3. The vibrating screen according to claim 2, characterized in that, The excitation beam (113) can adjust and move in a first direction (F) relative to the side plate (112). 4. The vibrating screen according to claim 3, characterized in that, In both the excitation beam (113) and the side plate (112), a waist hole (1121) is arranged along the first direction (F) of one of them, and a waist hole (1121) is connected to the other of them. A fastener (1131), for adjusting the relative position between the excitation beam (113) and the side plate (112) through the fastener (1131). 5. The vibrating screen according to claim 2, characterized in that, The sieve box (110) also includes: At least two reinforcing beams (114) are respectively arranged at the feeding end (1111) and the discharging end (1112) of the screen box (110), wherein the two ends of each reinforcing beam (114) are connected to the adjacent The two side plates (112) are fixedly connected. 6. The vibrating screen according to claim 5, characterized in that, Each of the unit screens (100) also includes: at least two support beam assemblies (130), Each support beam assembly (130) has at least two support beams (131), and each support beam (131) is correspondingly connected to both sides of the reinforcing beam (114); Wherein, each support beam assembly (130) has a different height in the height direction (H), and is lowered along the first direction (F) from the feeding end (1111) to the discharging end (1112). 7. The vibrating screen according to claim 6, characterized in that, Also includes: shock absorber (140), The shock absorber (140) is installed between the support beam (131) and the reinforcement beam (114), and is configured to deform so that the support beam (131) and the reinforcement beam (114) Relative movement along the height direction (H). 8. The vibrating screen according to claim 7, characterized in that, The shock absorber (140) is a compression spring, An installation clip (1141) is fixed on the reinforcing beam (114), and the installation clip (1141) has a first protrusion (1142) extending toward the support beam (131); A second protrusion (1311) opposite to the first protrusion (1142) and extending toward the reinforcing beam (114) is formed on the support beam (131); Both ends of the compression spring are sheathed on the first protrusion (1142) and the second protrusion (1311) respectively. 9. The vibrating screen according to claim 1, characterized in that, Also includes: Base (300), The base (300) includes: at least two crossbars (310) extending along the third direction (T) and oppositely arranged in the second direction (S); At least one longitudinal bar (320) extending along the second direction (S) and connecting adjacent two transverse bars (310) in the third direction (T); Wherein, each of the unit screens (100) can be adjusted to move in a first direction (F) relative to the cross bar (310); Wherein, the third direction (T) is perpendicular to the second direction (S).

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