CN111001559B - Suspension type dish-shaped coupling vibration screening machine - Google Patents
Suspension type dish-shaped coupling vibration screening machine Download PDFInfo
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- CN111001559B CN111001559B CN201911312722.XA CN201911312722A CN111001559B CN 111001559 B CN111001559 B CN 111001559B CN 201911312722 A CN201911312722 A CN 201911312722A CN 111001559 B CN111001559 B CN 111001559B
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- 238000012216 screening Methods 0.000 title claims abstract description 43
- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 239000000725 suspension Substances 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 238000002955 isolation Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a vibrating screening machine, in particular to a suspension type dish-shaped coupling vibrating screening machine, which is characterized in that: comprises a fixed beam, wherein the two ends of the fixed beam are provided with disc springs I; the motor frame is fixedly provided with a motor with a rotary eccentric block and a disc spring II, and the disc spring II is connected with a disc spring I aligned right above the disc spring II through a steel wire lifting rope; the screening box is provided with a first suspender and a second suspender, the first suspender is fixedly connected with the disc spring II aligned right above the first suspender, and the second suspender is fixedly connected with the disc spring II aligned right above the second suspender; the rotation frequency of the suspension rotation eccentric block is equal to the natural frequency of the screen box. The invention has the characteristics of high use reliability, high screening efficiency, energy conservation and the like.
Description
Technical Field
The invention discloses a vibrating screening machine, and particularly relates to a suspension type dish-shaped coupling vibrating screening machine.
Background
The vibrating screen uses the principle of mechanical vibration to make the material be thrown up on the screen surface, at the same time makes straight-line movement forward to make screen reasonably matched so as to attain the goal of screening. Therefore, classifying the mixed granular materials with the size by using a vibrating screen is a common classification method in industry.
The principle of vibration is utilized, and in theory, the power consumption is small compared with other forms of material classification, and the production capacity is large. Therefore, the vibrating screen is widely applied to mineral separation screening of mines, and is also applied to screening materials with various granularity in other industrial and agricultural production industries, or dehydrating, desliming, medium removing and the like of the materials.
The suspension type sieving machine is one structural form of a vibrating screen, and the structural form of a traditional suspension type sieving machine is shown in fig. 1; the vibrator and the screen box are fixed into a whole through a connecting piece, a motor for driving the vibrator is fixedly arranged on the ground, the screen box is fixedly connected with a single-group spring assembly through a suspender, and the screen box is connected with the suspender; the screen box consists of a screen frame and a plurality of layers of screens; the motor drives the vibrator, the vibrator generates vibration, and the screen box vibrates along with the vibration to classify materials. Also similar to the suspension type sieving machine, a suspension type vibrating sieve (publication number: CN 103639113A) is disclosed in Chinese patent literature; the two structural forms have the common defects that: (1) The vibrator and the screen box are fixedly connected together to work and vibrate, so that the vibration load of the screen box is increased, the energy consumption is correspondingly increased, and the service life of the vibrator is shortened; (2) When the motor drives the vibrator, traction pulling force is generated, so that the screen box and a spring assembly connected with the screen box are subjected to additional pulling force, and the loads of the screen box and the spring assembly are increased. There is also a wide-width suspended vibrating screen (bulletin number: CN 204638514U) of chinese patent, and although the screen box of this kind of structure is also in a suspended structure, the vibrating screen is a swinging type screen, and the screen box does not vibrate in a vertical manner. In view of this, the present invention has developed a suspended disk coupled vibratory screening machine.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a suspension type disc-shaped coupling vibration screening machine.
In order to achieve the aim of the invention, the following technical scheme is adopted:
a suspended disk-shaped coupled vibration screening machine comprises a main body,
The disc springs I are arranged at the two ends of the fixed beam;
The motor frame is fixedly provided with a motor with a rotary eccentric block and a disc spring II, and the disc spring II is connected with a disc spring I aligned right above the disc spring II through a steel wire lifting rope; and
The screening box is provided with a first suspender and a second suspender, the first suspender is fixedly connected with the disc spring II aligned right above the first suspender, and the second suspender is fixedly connected with the disc spring II aligned right above the second suspender; wherein the revolution frequency of the rotating eccentric block is equal to the natural frequency of the screen box. The natural frequency of the screen box is determined by the spring rate supporting the screen box and the mass of the screen box.
The working principle of the invention is as follows: the screen box is correspondingly and fixedly connected with a disc spring II arranged on the motor frame through a first suspender and a second suspender, the disc spring II is correspondingly and fixedly connected with a disc spring I arranged on the fixed beam through a steel wire lifting rope, a motor with a rotary eccentric block is also arranged on the motor frame, the motor drives the rotary eccentric block to rotate, the rotary eccentric block forces the motor frame to vibrate, and under the vibration action of the motor frame, the disc spring I and the disc spring II are linked; according to the two-degree-of-freedom coupling theory, when the rotation frequency of the rotary eccentric block is equal to the natural frequency of the screen box, vibration coupling is generated, and the motor frame and the motor are stationary; the vibrating force of the rotating eccentric block is transmitted to the screen box through vibration coupling, and then the screen box realizes vibration screening work.
As a further development of the invention, the motor comprises 2 motors, the rotation directions of which are simultaneously co-directional or counter-directional.
As a further improvement of the invention, the motor revolution frequency is equal to the natural frequency of the screen box; simultaneously satisfies:
K is rigidity, E is elastic modulus, D is outer diameter of the disc spring, mu is Poisson ratio, h 0 is conical height of the disc spring, t is thickness of the disc spring, f is deformation and K 1,K4 is calculation coefficient;
The secondary vibration isolation vibration, the two groups of spring stiffness are respectively determined by k 1＝ω1 2m1,k2＝ω2 2m2, wherein the frequency omega 1＝ω2. The natural frequency of the screen box is determined by the spring rate of the supporting screen box and the mass of the screen box.
As a further improvement of the invention, the disc springs I and II comprise I-shaped rods, pressure plates and disc springs, the disc springs are arranged between the pressure plates, and the I-shaped rods sequentially penetrate through the bottom pressure plate, the disc springs and the top pressure plate and are fixedly connected with nuts through threads.
As a further improvement of the invention, the length of the first suspender is shorter than that of the second suspender, and after the first suspender and the second suspender are respectively fixedly installed, the screen box is obliquely installed to the second suspender.
As a further improvement of the invention, the motor frame is provided with an inclined supporting surface and a horizontal supporting surface, and the inclined supporting surface is vertically and fixedly arranged on the horizontal supporting surface; the motor is fixedly arranged on the inclined supporting surface, and the disc springs II are arranged at two ends of the horizontal supporting surface.
As a further development of the invention, the screen box is provided with a screen. The screen cloth carries out vibration screening to the material that gets into the screen box.
The theory basis of the invention is researched by a secondary vibration isolation vibration coupling theory (the coupling refers to the phenomenon that two or more systems or two motion forms are mutually influenced and combined through interaction). The invention is different from the existing screening machine in that no vibration exciter is arranged on the screening box; and the motor with a rotary eccentric block is used for replacing a vibration exciter; the top of the fixed beam is provided with a disc spring I, the motor frame below the fixed beam is provided with a disc spring II, and the disc springs II and the disc springs I are in one-to-one correspondence connection in the vertical direction; the motor drives the rotary eccentric block to rotate, the rotary eccentric block excites the motor frame, and the disc spring II and the disc spring I are linked; according to the theory of secondary vibration isolation and vibration coupling, when the rotation frequency of the rotary eccentric block is equal to the natural frequency of the screen box, the motor frame is static, and the vibration force of the rotary eccentric block is transmitted to the screen box through vibration coupling, so that the screen box realizes vibration coupling screening operation.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress:
1. The vibrating separation screening machine is created by improving the existing vibrating screen, the vibrating screen is separated from a screen box by adopting a vibration exciter, the vibration exciter is replaced by a motor with a rotary eccentric block, the load of the screen box is reduced, and the screen box is indirectly connected with the motor with the eccentric block through a suspender, a motor frame, a spring group II and a spring group I; the motor is utilized to drive the rotary eccentric block to rotate, and the motor frame is excited by the rotary eccentric block, so that the motor frame drives the spring group II, the spring group I and the screen box to be excited; in the excitation process, the spring group I and the spring group II realize linkage; according to the secondary vibration isolation vibration coupling theory, when the frequency of exciting force is equal to the natural frequency of the screen box, vibration coupling is generated, a motor with a rotary eccentric block and a motor frame are stationary, the vibrating force of the rotary eccentric block is transmitted to the screen box through the vibration coupling, and then the screen box realizes vibration screening work, and the motor frame is stationary; eliminating the influence of vibration on the outside and realizing the purposes of safety, high efficiency and energy saving. The power consumption is reduced by more than 30% compared with the current vibrating screen.
2. The invention overcomes the defects of high manufacturing and assembling requirements of parts of the traditional vibrating screen, easy damage of springs and unstable work caused by the change of the amplitude of the screening machine along with the change of the feeding amount. The invention adopts vibration coupling, so that the power consumption is small, and the production efficiency can be improved.
3. The vibration source adopts the motor with the rotary eccentric blocks, two motors with the rotary eccentric blocks are installed together, and the rotation of the two motors is the simultaneous same-direction or reverse-direction operation, so that the screen box vibrates up and down along a straight line during working, and the material screening effect is good.
4. The invention is suitable for classifying the mixture materials with the large and small particles in various industries, and is also used for dehydrating, desliming, medium removal and the like of the materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic view of a conventional seat screen machine;
FIG. 2 is a schematic diagram of a front view of a suspended disk coupled vibratory screening machine according to the present invention;
FIG. 3 is a schematic view of the belleville spring stack of the present invention;
FIG. 4 is a schematic diagram of the vibrating principle of a conventional vibrating screen;
FIG. 5 is a schematic diagram of a mechanical model of a coupled vibratory screening machine in which a vibration exciter is separated from a screen box from a conventional vibratory screen;
the names and serial numbers of the components in the figure: disc spring piece I1, I type pole 101, pressure disk 102, disc spring 103, wire lifting rope 2, motor 3, disc spring II 4, motor frame 5, first jib 6, sieve box 7, screen cloth 8, fixed beam 9, second jib 10.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described with reference to the accompanying drawings and examples, and it is apparent that the described examples are only a part of examples of the present application, and all other examples obtained by those skilled in the art without making any inventive effort are intended to be within the scope of the present application.
Figure 2 shows a suspended disk coupled vibratory screening machine of the present invention. As can be seen from fig. 2, the vibration source used in the invention is a motor 3 with a rotary eccentric block, and the motor 3 is separated from the screen box 7, so that the load of the screen box can be reduced, and the working efficiency of the screen box can be improved; and there is not pulling force to the screen box, can not cause extra effort to the screen box, extension equipment life.
As shown in fig. 2 and 3, a suspended disc-shaped coupled vibration screening machine comprises a fixed beam 9, a motor frame 5 and a screen box 7, wherein disc springs I1 are arranged at two ends of the fixed beam 9; the motor frame 5 is fixedly provided with a motor 3 with a rotary eccentric block and a disc spring II 4, and the disc spring II 4 is connected with a disc spring I1 aligned right above the disc spring II through a steel wire lifting rope 2; and the screen box 7 is provided with a first suspender 6 and a second suspender 10, the first suspender 6 is fixedly connected with the disc spring II 4 aligned right above the first suspender, the second suspender 10 is fixedly connected with the disc spring II 4 aligned right above the second suspender, and the revolution frequency of the rotary eccentric block is equal to the natural frequency of the screen box 7.
The natural frequency of the screen box 7 is determined by the spring rate of the supporting screen box and the screen box mass (see below for the principle of coupling operation). The stiffness of the disc spring I1 is different from the stiffness of the disc spring II 4; simultaneously satisfies:
K is rigidity, E is elastic modulus, D is outer diameter of the disc spring, mu is Poisson ratio, h 0 is conical height of the disc spring, t is thickness of the disc spring, f is deformation and K 1,K4 is calculation coefficient;
The secondary vibration isolation vibration, the two groups of spring stiffness are respectively determined by k 1＝ω1 2m1,k2＝ω2 2m2, wherein the frequency omega 1＝ω2. The rigidity ranges of the two are determined by the respective reference vibration masses, and are proportional to the mass sizes and inversely proportional to the vibration frequencies. While the masses m 1 and m 2 of the individual vibrators are not identical, so are the rigidities.
The number of the motors 3 is 2, and the rotation directions of the two motors 3 are simultaneously in the same direction or in opposite directions. Ensuring that the steering of the two motors is consistent.
The disc springs I1 and II 4 comprise I-shaped rods 101, pressure plates 102 and disc springs 103, the disc springs 103 are arranged between the pressure plates 102, and the I-shaped rods 101 sequentially penetrate through the bottom pressure plates 102, the disc springs 103 and the top pressure plates 102 and are fixedly connected with nuts through threads. The pressure plate 102 can protect the disc spring 103 and limit the disc spring 103.
The first boom 6 is shorter than the second boom 10, and after the first boom 6 and the second boom 10 are fixedly mounted, the screen box 7 is mounted obliquely to the second boom 10. The screen box 7 is facilitated to perform vibration screening.
The motor frame 5 has an inclined support surface and a horizontal support surface, the inclined support surface being vertically fixedly mounted on the horizontal support surface; the motor 3 with the rotary eccentric block is fixedly arranged on the inclined supporting surface, and the disc springs II 4 are arranged at two ends of the horizontal supporting surface. The motor 3 with the rotating eccentric block is arranged on the inclined supporting surface, so that the resultant vibration force generated by the motor 3 with the rotating eccentric block is perpendicular to the screening surface of the screening box 7.
The screen box 7 is provided with a screen 8, and the screen 8 performs vibration screening on the material entering the screen box 7.
The first suspender 6 is coaxially connected with an I-shaped rod 101 in a disc spring II 4 correspondingly connected with the first suspender; the second suspender 10 is coaxially connected with an I-shaped rod 101 in a disc spring II 4 correspondingly connected with the second suspender; the I-shaped rod 101 in the belleville spring II 4 is coaxially connected with the I-shaped rod 101 in the belleville spring I1 through the steel wire lifting rope 2.
The disc spring I1 and the disc spring II 4 are coaxially connected through the steel wire lifting rope 2, the steel wire rope is flexible, the stretching impact on the disc spring I1 can be reduced in the vibration process, the disc spring I1 is protected, the work damage is delayed, and the service life is prolonged.
The concrete working mode of the invention is as follows:
The screen box 7 is correspondingly and fixedly connected with a disc spring II 4 arranged on a motor frame 5 through a first suspender 6 and a second suspender 10, the disc spring II 4 is correspondingly and fixedly connected with a disc spring I1 arranged on a fixed beam 9 through a steel wire lifting rope 2, a motor 3 with a rotating eccentric block is also arranged on the motor frame 5, the motor 3 drives the rotating eccentric block to rotate, the rotating eccentric block excites the motor frame 5, and under the vibration action of the motor frame 5, the disc spring I1 and the disc spring II 4 are linked; according to the secondary vibration isolation vibration coupling theory, when the rotation frequency of the rotary eccentric block is equal to the natural frequency of the screen box 7, vibration coupling is generated, the motor 3 and the motor frame 5 are in dynamic balance and static, and the vibration force of the rotary eccentric block is transmitted to the screen box 7 through the vibration coupling, so that the screen box 7 realizes vibration coupling screening work. Therefore, the energy consumption can be effectively reduced, and the power consumption can be reduced by more than 30% compared with the traditional screening machine.
The invention adopts the motor 3 with the rotary eccentric block to replace the vibration exciter.
According to the invention, the vibration exciter is not arranged on the screen box 7, so that the load of the screen box 7 is reduced, the vibration load of the screen box 7 is further reduced, and the service life of equipment can be prolonged.
The coupling working principle is as follows:
1. The vibration principle diagram 4 of the common vibrating screen shows that the screen box vibrates under the action of a vibration exciter on the screen box to screen materials. According to the basic law of dynamics, the differential equation of the vibration of the screen box is as follows:
x horizontal direction
Y vertical direction
In the above formula: m-sieve box and material vibration quality,
M- -mass of the eccentric mass,
C- -viscous damping coefficient,
Kx and Ky are the spring rates in the x and y directions respectively,
F- -eccentric exciting force,
The meaning of the symbols is shown in fig. 3;
2. The coupled vibration screening machine separates the vibration exciter from the screen box from the traditional vibration screen, and the mechanical model is shown in fig. 5, and is a two-degree-of-freedom forced vibration system with viscous damping. The forced vibration equation of the system has the following form:
wherein:
M11＝m1,M22＝m2,C11＝c1+c2,C12＝C21＝-c2,
C22＝c2,K11＝k1+k2,K12＝K21＝-k2,K22＝k2,
m 1 -screen box and material vibration mass,
M 2 -excitation and the mass of the frame,
C 1、c2 - -vibration viscous damping coefficient,
K 1、k2 -the spring rate of the disk spring I and the disk spring II respectively,
F 1 - -the eccentric exciting force of the exciter,
In particular as shown in figure 5 of the drawings,
The full solution of the forced vibration equation can be expressed as
With damped vibrations due toAnd/>After a certain time, all will disappear, but only the forced vibration is present, so the steady state solution of the forced vibration equation:
x1＝B1c cosωt+B1s sinωt
x2＝B2ccosωt+B2ssinωt
The displacement x 1、x2 and the first-order second-order derivative coefficient are subjected to simplification and arrangement in the human equation (1) to obtain the three-dimensional displacement:
for the above formula to be identical, the coefficients of sin ωt and cos ωt must be zero, i.e
(K11-M11ω2)B1c+K12+B2c+C11ωB1s+C12ωB2s＝0
(K11-M11ω2)B1s+K12B2s-C11ωB1c-C12ωB2c＝F1
(K22-M22ω2)B2c+K12B1c+C12ωB1s+C22ωB2s＝0
(K22-M22ω2)B2s+K12B1s-C12ωB1c-C22ωB2c＝0
From the four algebraic equations above, four unknowns B 1c、B2c、B1s and B 2s can be found. The displacement can be expressed as
Wherein the method comprises the steps of
Since, in a vibrating screen, the damping force is relatively small, consider c 1＝c2 c 0,
Order the(Obtained by this engineering), there are
B1＝0
That is, when the excitation frequency omega is equal to the natural frequency of the vibration of the screen box M 1 When the vibration exciter frame M 2 is in the zero-amplitude state, the vibration exciter frame M is stationary. The term "coupling" is referred to herein by a physical concept as "vibration coupling", and refers to a phenomenon in which two or more vibrators affect each other by interaction.
According to the principle, the vibration separation screening machine provided by the invention realizes the separation of vibration and movement, namely, the motor with the rotary eccentric block only generates vibration force and does not move, the screen box only needs vibration operation to vibrate, and the movement of the movement does not move and does not do idle work, so that the energy-saving purpose is realized.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. A suspension type dish-shaped coupling vibration screening machine is characterized in that: comprising the steps of (a) a step of,
The two ends of the fixed beam (9) are provided with disc springs I (1);
A motor frame (5) fixedly provided with a motor (3) with a rotary eccentric block and a disc spring II (4), wherein the disc spring II (4) is connected with a disc spring I (1) aligned right above the disc spring II through a steel wire lifting rope (2); and
The screening box (7) is provided with a first suspender (6) and a second suspender (10), the first suspender (6) is fixedly connected with the disc spring II (4) aligned right above the first suspender, and the second suspender (10) is fixedly connected with the disc spring II (4) aligned right above the second suspender;
wherein the revolution frequency of the rotary eccentric block is equal to the natural frequency of the screen box (7);
The stiffness of the disc spring I (1) is different from the stiffness of the disc spring II (4); simultaneously satisfies:
K is rigidity, E is elastic modulus, D is outer diameter of the disc spring, mu is Poisson ratio, h 0 is conical height of the disc spring, t is thickness of the disc spring, f is deformation and K 1,K4 is calculation coefficient;
The two groups of spring stiffness are respectively determined by k 1=ω1 2m1,k2=ω2 2m2, wherein the frequency omega 1 =ω2.
2. The suspended disc-shaped coupled vibratory screening machine recited in claim 1, wherein: the motor (3) comprises 2 motors with rotating eccentric blocks, and the rotation directions of the two motors (3) are the same or opposite.
3. The suspension dished coupled vibratory screening machine according to claim 1 or 2, wherein: disc spring I (1), disc spring II (4) all include I type pole (101), pressure disk (102) and disc spring (103), install disc spring (103) between pressure disk (102), I type pole (101) run through bottom pressure disk (102), disc spring (103) and top pressure disk (102) and nut screw thread fixed connection in proper order.
4. The suspended disc-shaped coupled vibratory screening machine recited in claim 1, wherein: the length of the first suspender (6) is shorter than that of the second suspender (10), and after the first suspender (6) and the second suspender (10) are respectively and fixedly installed, the screen box (7) is obliquely installed to the second suspender (10).
5. The suspension dished coupled vibratory screening machine according to claim 1 or 4, wherein: the motor frame (5) is provided with an inclined supporting surface and a horizontal supporting surface, and the inclined supporting surface is vertically and fixedly arranged on the horizontal supporting surface; the motor (3) is fixedly arranged on the inclined supporting surface, and the disc springs II (4) are arranged at two ends of the horizontal supporting surface.
6. The suspended disc-shaped coupled vibratory screening machine recited in claim 1, wherein: the screen box (7) is provided with a screen (8).
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| CN201911312722.XA CN111001559B (en) | 2019-12-18 | 2019-12-18 | Suspension type dish-shaped coupling vibration screening machine |
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| CN201911312722.XA CN111001559B (en) | 2019-12-18 | 2019-12-18 | Suspension type dish-shaped coupling vibration screening machine |
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| CN111001559A CN111001559A (en) | 2020-04-14 |
| CN111001559B true CN111001559B (en) | 2024-05-17 |
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| JP4681066B2 (en) * | 2008-12-26 | 2011-05-11 | オリンパスイメージング株式会社 | Vibration device |
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