CN111001559A - Suspension type dish coupling vibration screening machine - Google Patents
Suspension type dish coupling vibration screening machine Download PDFInfo
- Publication number
- CN111001559A CN111001559A CN201911312722.XA CN201911312722A CN111001559A CN 111001559 A CN111001559 A CN 111001559A CN 201911312722 A CN201911312722 A CN 201911312722A CN 111001559 A CN111001559 A CN 111001559A
- Authority
- CN
- China
- Prior art keywords
- disc spring
- suspender
- disc
- vibration
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012216 screening Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 title claims abstract description 30
- 238000010168 coupling process Methods 0.000 title claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 30
- 239000000725 suspension Substances 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 14
- 238000007873 sieving Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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 screen classifier, in particular to a suspended disk-shaped coupling vibrating screen classifier, which is characterized in that: comprises a fixed beam, two ends of which are provided with disc springs I; the motor frame is fixedly provided with a motor with a rotating 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 screen 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 suspending and rotating 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 screen classifier, and particularly relates to a suspension type disc-shaped coupling vibrating screen classifier.
Background
The vibrating screen utilizes the principle of mechanical vibration to throw up the materials on the screen surface and simultaneously moves forwards in a straight line to achieve the purpose of screening by a reasonably matched screen. Therefore, the classification of the mixed large and small particle materials by using a vibrating screen is a common industrial classification method.
The principle of vibration is utilized to work, and theoretically, the power consumption is smaller than that of other forms of materials in classification, and the production capacity is large. Therefore, the vibrating screen is not only widely applied to ore dressing and screening of mines, but also applied to screening of materials with various particle sizes in other industrial and agricultural production industries, or dehydration, desliming, medium removal and the like of the materials.
The suspension type screening machine is a structural form in a vibrating screen, and the structural form of a traditional suspension type screening machine is shown in figure 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 of spring assemblies 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 screen meshes; the motor drives the vibrator, the vibrator generates vibration, and the screen box vibrates along with the vibration to classify materials. A suspended vibrating screen (publication number: CN103639113A) similar to the suspended sieving machine in structure, such as Chinese patent document; the two structural forms have the common disadvantages 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 can be generated, so that the screen box and the spring assembly connected with the screen box are subjected to additional pulling force, and the load of the screen box and the spring assembly is increased. There is also a chinese patent (publication No. CN204638514U) with a wide suspension type vibrating screen, although the screen box of this structure is also of a suspension type structure, the vibrating screen is a swing type screen, and the screen box does not vibrate in a vertical manner. In view of the above, the invention provides a suspension type disc-shaped coupling vibration screening machine.
Disclosure of Invention
The invention aims to provide a suspension type disc-shaped coupling vibration screening machine aiming at the defects of the prior art.
In order to achieve the purpose of the invention, the technical scheme is as follows:
a suspended disk-shaped coupled vibration screening machine comprises,
the two ends of the fixed beam are provided with disc springs I;
the motor frame is fixedly provided with a motor with a rotating 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 screen 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 rotation frequency of the suspending and 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 sieve box is correspondingly and fixedly connected with a disc spring II arranged on a 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 a fixed beam through a steel wire lifting rope, a motor with a rotating eccentric block is also arranged on the motor frame, the motor drives the rotating eccentric block to rotate, the rotating eccentric block forces the motor frame to vibrate, and the disc spring I and the disc spring II are linked under the vibration action of the motor frame; according to the two-degree-of-freedom coupling theory, when the rotation frequency of the rotating eccentric block is equal to the inherent frequency of the screen box, vibration coupling is generated, and the motor frame and the motor are static; the vibration force of the rotating eccentric block is transmitted to the screen box through vibration coupling, and then the screen box realizes the vibration screening work
As a further improvement of the invention, the motor comprises 2 motors, and the rotation directions of the two motors are simultaneously operated in the same direction or in opposite directions.
As a further improvement of the invention, the motor revolution frequency is equal to the natural frequency of the sieve box; simultaneously, the following requirements are met:
k is stiffness, E is elastic modulus, D is disc spring outer diameter, mu is Poisson's ratio, h0Is the disc spring taper height, t is the disc spring thickness, f is the deflection, K1，K4To calculate the coefficients;
the stiffness of the two groups of springs for secondary vibration isolation and vibration is determined by the following formula K1＝ω1 2m1,K2＝ω2 2m2Wherein the frequency ω is ω2. The natural frequency of the screen box is determined by the spring rate supporting the screen box and the mass of the screen box.
As a further improvement of the invention, the disc spring I and the disc spring II respectively comprise an I-shaped rod, a pressure plate and a disc spring, the disc springs are arranged between the pressure plates, and the I-shaped rod sequentially penetrates through the bottom pressure plate, the disc spring and the top pressure plate to be fixedly connected with the nut through threads.
In a further improvement of the present invention, the first boom is shorter in length than the second boom, and the sieve box is attached to the second boom in an inclined manner after the first boom and the second boom are fixedly attached to each other.
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 installed on the inclined supporting surface, and disc springs II are installed at two ends of the horizontal supporting surface.
As a further development of the invention, the sieve box is provided with a sieve screen. The screen cloth carries out vibratory screening to the material that gets into in the sieve case.
The theoretical basis of the invention is the research of secondary vibration isolation and vibration coupling theory (the term "coupling" in the invention 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 sieving machine in that the sieving box is not provided with a vibration exciter; a 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, a motor frame below the fixed beam is provided with a disc spring II, and the disc springs II and the disc springs I are connected in a one-to-one correspondence manner in the vertical direction; the motor drives the rotating eccentric block to rotate, the rotating eccentric block excites the motor frame, and the disc spring II is linked with the disc spring I; according to the secondary vibration isolation and vibration coupling theory, when the rotation frequency of the rotating eccentric block is equal to the natural frequency of the screen box, the motor frame is still, the vibration force of the rotating eccentric block is transmitted to the screen box through vibration coupling, and then the screen box realizes vibration coupling screening operation.
Compared with the prior art, the invention has prominent substantive features and remarkable progress:
1. the vibrating screen separator is improved and created on the basis of the existing vibrating screen, the vibrating screen disclosed by the invention adopts a vibration exciter to separate from a screen box, and utilizes a motor with a rotating eccentric block to replace the vibration exciter, so that 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 used for driving the rotating eccentric block to rotate, and the rotating eccentric block excites the motor frame, so that the motor frame drives the spring group II, the spring group I and the screen box to excite vibration; in the process of excitation, the spring group I and the spring group II are linked; according to the secondary vibration isolation and vibration coupling theory, when the frequency of an exciting force is equal to the natural frequency of a screen box, vibration coupling is generated, a motor with a rotating eccentric block and a motor frame are still, the vibration force of the rotating eccentric block is transmitted to the screen box through the vibration coupling, then the screen box realizes vibration screening work, and the motor frame is still; the influence of vibration on the outside is eliminated, and the aims of safety, high efficiency and energy conservation are fulfilled. . Compared with the current vibrating screen, the power consumption is reduced by more than 30 percent.
2. The vibrating screen overcomes the defects that the traditional vibrating screen has high requirements on manufacturing and assembling of parts, the spring is easy to damage, and the amplitude of the screening machine changes along with the change of the feeding amount, so that the work is unstable. The invention adopts vibration coupling, which can reduce power consumption and improve production efficiency.
3. The vibration source adopts the motor with the rotating eccentric block, the two motors with the rotating eccentric block are arranged together, and the rotation of the double motors is simultaneous same-direction or reverse-direction operation, so that the screen box vibrates up and down along a straight line when in work, and the material screening effect is good.
4. The invention is suitable for grading the mixed material of large and small particles in various industries, and is also used for dehydration, desliming, medium removal and the like of the material.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of a conventional seating screen machine;
FIG. 2 is a schematic structural diagram of a suspended disk-shaped coupled vibrating screen machine according to the present invention;
FIG. 3 is a schematic structural diagram of a Belleville spring stack according to the present invention;
FIG. 4 is a schematic diagram of a conventional vibrating screen vibrating principle;
figure 5 is a schematic view of a mechanical model of a coupled vibratory screening machine in which the vibration exciter is separated from the screen box in a conventional vibratory screen;
names and serial numbers of the components in the figure: dish spring part I1, I type pole 101, pressure disk 102, dish spring 103, steel wire lifting rope 2, motor 3, dish spring II 4, motor frame 5, first jib 6, sieve case 7, screen cloth 8, fixed beam 9, second jib 10.
Detailed Description
In order to make the technical solutions in the present application better understood, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments in the present application shall fall within the protection scope of the present application.
Figure 2 shows a hanging type disc-shaped coupling vibration screening machine. As can be seen from fig. 2, the vibration source used in the present invention is the motor 3 with the rotating eccentric block, and the motor 3 is separated from the sieve box 7, so that the load of the sieve box can be reduced, and the working efficiency of the sieve box can be improved; and do not have the pulling force to the sieve case, can not cause extra effort to the sieve case, extension equipment life.
As shown in fig. 2 and 3, the suspension type disc-shaped coupling vibration screening machine comprises a fixed beam 9, a motor frame 5 and a screening box 7, wherein disc-shaped 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 rotating 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 4 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 6 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 supporting the screen box and the mass of the screen box (see below for the coupling working principle). The rigidity of the disc spring I1 is different from that of the disc spring II 4; simultaneously, the following requirements are met:
k is the stiffness of the steel sheet,e is elastic modulus, D is disc spring outer diameter, mu is Poisson's ratio, h0Is the disc spring taper height, t is the disc spring thickness, f is the deflection, K1，K4To calculate the coefficients;
secondary vibration isolation vibration, two groups of spring stiffness are respectively determined by the following formula K1＝ω1 2m1,K2＝ω2 2m2Wherein the frequency ω is ω2. The range of the stiffness of the two is determined by the mass of each vibration body, and is in direct proportion to the mass and in inverse proportion to the vibration frequency. Mass m of the vibrating body1And m2Are not identical, so the stiffness is also not identical.
The number of the motors 3 is 2, and the rotation directions of the two motors 3 are simultaneously operated in the same direction or in opposite directions. Ensuring that the steering of both motors is consistent.
Disc spring I1, 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 runs through bottom pressure disk 102, disc spring 103 and top pressure disk 102 and nut screw thread fixed connection in proper order. 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 in length, and after the first boom 6 and the second boom 10 are fixed and mounted, the sieve box 7 is mounted to the second boom 10 in an inclined manner. The vibration screening of the screen box 7 is facilitated.
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 inclined supporting surface is fixedly provided with a motor 3 with a rotating eccentric block, and two ends of the horizontal supporting surface are provided with disc springs II 4. The mounting of the motor 3 with the rotating eccentric mass on an inclined support surface can facilitate the resultant of the vibrations generated by the motor 3 with the rotating eccentric mass to be perpendicular to the screening surface of the screen box 7.
The sieve case 7 is provided with screen cloth 8, and screen cloth 8 carries out vibratory screening to the material that gets into in the sieve case 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; i-shaped rod 101 in disc spring II 4 and I-shaped rod 101 in disc spring I1 are coaxially connected through steel wire lifting rope 2.
Adopt 2 coaxial coupling of steel wire lifting rope between belleville spring I1 and belleville spring II 4, wire rope has the flexibility, and the vibration in-process can reduce the tensile impact to belleville spring I1, protects belleville spring I1, delays that work is impaired, improves life.
The specific working mode of the invention is as follows:
a sieve 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, the motor frame 5 is also provided with a motor 3 with a rotating eccentric block, the motor 3 drives the rotating eccentric block to rotate, the rotating eccentric block excites the motor frame 5, and the disc spring I1 and the disc spring II 4 are linked under the vibration action of the motor frame 5; according to the secondary vibration isolation and vibration coupling theory, when the rotation frequency of the rotating eccentric block is equal to the inherent frequency of the screen box 7, vibration coupling is generated, the motor 3 and the motor frame 5 are in dynamic balance and static, the vibration force of the rotating eccentric block is transmitted to the screen box 7 through vibration coupling, and then the screen box 7 realizes vibration coupling screening work. Therefore, the energy loss can be effectively reduced, and compared with the traditional screening machine, the power consumption can be reduced by more than 30%.
The invention adopts the motor 3 with the rotating eccentric block to replace the vibration exciter.
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:
firstly, as shown in a general vibration principle diagram 4, a screen box vibrates under the action of a vibration exciter on the screen box to realize the screening of materials. According to the basic law of dynamics, the differential equation of the vibration of the sieve box is as follows:
in the X horizontal direction
Y vertical direction
In the above formula: m-the vibration mass of the sieve box and the material,
m-the mass of the eccentric block,
c- -coefficient of viscous damping,
kx and Ky are the spring stiffness in the x and y directions respectively,
f- - -an eccentric excitation force,
the meaning of the above symbols is shown in FIG. 3;
the coupled vibrating sieving machine separates the vibration exciter from the sieving box in the traditional vibrating sieving machine, and the mechanical model is shown in figure 5 and is a two-degree-of-freedom forced vibration system with viscous damping. The forced vibration equation for this system has the following form:
in the formula:
M11＝m1,M22＝m2,C11＝c1+c2，C12＝C21＝-c2，
C22＝c2，K11＝k1+k2,K12＝K21＝-k2,K22＝k2，
m1the mass of the sieve box and the material participating in vibration,
m2-the mass of the excitation and of the gantry,
c1、c2-a vibration viscous damping coefficient,
k1、k2the spring stiffness of the disc spring I and the spring stiffness of the disc spring II are respectively,
F1-the eccentric excitation force of the exciter,
as shown in particular in figure 5 of the drawings,
the full solution of the forced vibration equation can be expressed as
There is damped vibration because
And
will disappear entirely after a certain time, and there is only forced vibration, so the steady state solution of the forced vibration equation:
x1＝B1ccos ωt+B1ssin ωt
x2＝B2ccos ωt+B2ssin ωt
will displace x1、x2And the first-order second derivative thereof is obtained by simplifying and sorting in an algebraic equation (1):
[(K11-M11ω2)B1c+K12B2c+C11ωB1s+C12ωB2s]cos ωt+[(K11-M11ω2)B1s+K12B2s-C11ωB1c-C12ωB2c-F1]sin ωt＝0
[(K22-M22ω2)β2c+K12B1c+C12ωB1s+C22ωB2s]cos ωt+[(K22-M22ω2)B2s+K12B1s-C12ωB1c-C22ωB2c]sin ωt＝0
to make the above equations identical, the coefficients of sin ω t and cos ω t must be zero, i.e.
(K11-M11ω2)B1c+K12B2c+C11ωB1s+C12ωB2s＝0
(K11-M11ω2)B1s+K12B2s-C11ωB1c-C12ωB2c＝F1
(K22-M22ω2)B2c+K12B1c+C22ωB1s+C22ωB2s＝0
(K22-M22ω2)B2s+K12B1s-C12ωB1c-C22ωB2c＝0
According to the four algebraic equations, four unknowns B can be obtained1c、B2c、B1sAnd B2s. At this time the displacement can be expressed as
Wherein
Since the damping force is relatively small in the vibrating screen, consider c1＝c2≈0，
Order to
(obtained by this process) then
B1＝0
That is, when the excitation frequency ω is equal to the sieve box M1Natural frequency of vibration
In time, the exciter stand M2Is zero and is stationary. The term "coupling" is referred to as "vibration coupling" in terms of a concept of physics, and refers to a phenomenon in which two or more vibrating bodies affect each other by interaction.
According to the principle, the vibration separation screening machine provided by the invention realizes the separation of vibration and motion, namely, the motor with the rotating eccentric block only generates the vibration force and does not move, the screening box can vibrate only by vibration operation, and the motion does not do the unsharpness work but does not move, so that the aim of saving energy is fulfilled.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. The utility model provides a dish-shaped coupling vibration screening machine of suspension type which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the two ends of the fixed beam (9) are provided with disc springs I (1);
the motor frame (5) is fixedly provided with a motor (3) with a rotating eccentric block and a disc spring II (4), and 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 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, and the second suspender (6) is fixedly connected with the disc spring II (4) aligned right above the second suspender;
wherein the rotation frequency of the suspending and rotating eccentric block is equal to the natural frequency of the screen box (7).
2. The hanging disc-shaped coupled vibratory screening machine of claim 1, wherein: the rigidity of the disc spring I (1) is different from that of the disc spring II (4); simultaneously, the following requirements are met:
k is stiffness, E is elastic modulus, D is disc spring outer diameter, mu is Poisson's ratio, h0Is the disc spring taper height, t is the disc spring thickness, f is the deflection, K1，K4To calculate the coefficients;
secondary vibration isolation vibration, two groups of spring stiffness are respectively determined by the following formula K1＝ω1 2m1,K2＝ω2 2m2Wherein the frequency ω is ω2。
3. The hanging disc-shaped coupled vibratory screening machine of claim 1, wherein: the motor (3) comprises 2 motors with rotating eccentric blocks, and the rotating directions of the two motors (3) are the same direction or opposite direction.
4. A hanging dish-shaped coupled vibratory screen 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.
5. The hanging disc-shaped coupled vibratory screening machine of 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 sieve box (7) is obliquely installed towards the second suspender (10).
6. A hanging dish-shaped coupled vibratory screening machine according to claim 1 or 5, 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 installed on the inclined supporting surface, and disc springs II (4) are installed at two ends of the horizontal supporting surface.
7. The hanging disc-shaped coupled vibratory screening machine of claim 1, wherein: the screen box (7) is provided with a screen (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312722.XA CN111001559B (en) | 2019-12-18 | 2019-12-18 | Suspension type dish-shaped coupling vibration screening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312722.XA CN111001559B (en) | 2019-12-18 | 2019-12-18 | Suspension type dish-shaped coupling vibration screening machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111001559A true CN111001559A (en) | 2020-04-14 |
| CN111001559B CN111001559B (en) | 2024-05-17 |
Family
ID=70116430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312722.XA Active CN111001559B (en) | 2019-12-18 | 2019-12-18 | Suspension type dish-shaped coupling vibration screening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111001559B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1238905A (en) * | 1967-08-30 | 1971-07-14 | ||
| GB1581060A (en) * | 1976-08-24 | 1980-12-10 | Maguin Ste Nle Ets | Cleaner suitable for cleaning root crops such as beets |
| CN2626632Y (en) * | 2003-06-18 | 2004-07-21 | 熊万里 | Eccentric block vibration exciter type complex frequency excitation vibrating screen |
| US20100165462A1 (en) * | 2008-12-26 | 2010-07-01 | Sumio Kawai | Vibrating device and image equipment having the same |
| CN101954351A (en) * | 2010-09-01 | 2011-01-26 | 鞍山重型矿山机器股份有限公司 | Secondary vibration screening method for screen surface and large-scale vibrating screen |
| CN201768687U (en) * | 2010-09-01 | 2011-03-23 | 鞍山重型矿山机器股份有限公司 | Large vibration screen with a secondary vibration screen surface |
| CN102029257A (en) * | 2010-12-27 | 2011-04-27 | 薛熠 | Vibrating screen |
| CN104668187A (en) * | 2015-03-09 | 2015-06-03 | 广西安硕尔安全技术有限责任公司 | Secure vibration-absorbing resonance screen |
| CN109158292A (en) * | 2018-09-18 | 2019-01-08 | 浙江工业大学 | A kind of vibrating screen device |
| CN212189961U (en) * | 2019-12-18 | 2020-12-22 | 广西安硕尔安全技术有限责任公司 | Suspension type dish coupling vibration screening machine |
-
2019
- 2019-12-18 CN CN201911312722.XA patent/CN111001559B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1238905A (en) * | 1967-08-30 | 1971-07-14 | ||
| GB1581060A (en) * | 1976-08-24 | 1980-12-10 | Maguin Ste Nle Ets | Cleaner suitable for cleaning root crops such as beets |
| CN2626632Y (en) * | 2003-06-18 | 2004-07-21 | 熊万里 | Eccentric block vibration exciter type complex frequency excitation vibrating screen |
| US20100165462A1 (en) * | 2008-12-26 | 2010-07-01 | Sumio Kawai | Vibrating device and image equipment having the same |
| CN101954351A (en) * | 2010-09-01 | 2011-01-26 | 鞍山重型矿山机器股份有限公司 | Secondary vibration screening method for screen surface and large-scale vibrating screen |
| CN201768687U (en) * | 2010-09-01 | 2011-03-23 | 鞍山重型矿山机器股份有限公司 | Large vibration screen with a secondary vibration screen surface |
| CN102029257A (en) * | 2010-12-27 | 2011-04-27 | 薛熠 | Vibrating screen |
| CN104668187A (en) * | 2015-03-09 | 2015-06-03 | 广西安硕尔安全技术有限责任公司 | Secure vibration-absorbing resonance screen |
| CN109158292A (en) * | 2018-09-18 | 2019-01-08 | 浙江工业大学 | A kind of vibrating screen device |
| CN212189961U (en) * | 2019-12-18 | 2020-12-22 | 广西安硕尔安全技术有限责任公司 | Suspension type dish coupling vibration screening machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111001559B (en) | 2024-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105772395A (en) | Double-mass vertical vibration anti-resonance screen | |
| CN201415187Y (en) | Multi-amplitude vibrating screen | |
| CN109622359B (en) | Double-motor driven near-resonance nonlinear vibration relaxation sieve | |
| CN212189961U (en) | Suspension type dish coupling vibration screening machine | |
| CN104624485B (en) | It is quick to remove bulk materials oscillatory type flip flop screen | |
| CN105689257A (en) | Modular variable-span variable-amplitude large vibrating screen | |
| CN201702104U (en) | Novel mining vibrating screen | |
| CN107442401B (en) | Double-mass anti-resonance vibrating screen | |
| CN202539064U (en) | Heavy-duty multi-stage screening equipment | |
| CN111001559A (en) | Suspension type dish coupling vibration screening machine | |
| CN206746989U (en) | A kind of Double shaft self synchronous elliptically vibrating screen | |
| CN212189964U (en) | Seat type coupling vibration screening machine | |
| CN210045559U (en) | Vibrating motor type inclined screen surface classifying screen | |
| CN212189965U (en) | Suspension type coupling vibration screening machine | |
| CN101934270A (en) | Vibrating screen | |
| CN212189962U (en) | Seat type dish coupling vibration screening machine | |
| CN111054625A (en) | Suspension type coupling vibration screening machine | |
| CN104668187A (en) | Secure vibration-absorbing resonance screen | |
| CN101844132A (en) | Novel mining vibrating screen | |
| CN201044916Y (en) | Vibration motor type complex-frequency mesh-vibrating sieve | |
| CN111001557A (en) | Seat type dish coupling vibration screening machine | |
| CN201871481U (en) | Multilayer high-frequency vibrating fine screen | |
| CN201807528U (en) | Vibrating screen | |
| CN215465987U (en) | Large-scale linear vibrating screen with four-axis vertical force screening inclined screen surface | |
| CN111001558A (en) | Seat type coupling vibration screening machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240411 Address after: 530023 No. 9, Sanli, Changbur Road, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region Applicant after: Feng Xuedong Country or region after: China Applicant after: He Xiaorong Address before: Room 8, second floor, former administrative office building, Guangxi Radio and TV University, No.2 Dongbao Road, Qingxiu District, Nanning City, Guangxi Zhuang Autonomous Region Applicant before: GUANGXI ANN SCHORR SECURITY TECHNOLOGY CO.,LTD. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240614 Address after: Room 301, 3rd Floor, Unit 1, Building 13, Shidai Mingcheng, No. 90 Wangzhou South Road, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region, 530000 Patentee after: Nanning Juning Enterprise Management Consulting Co.,Ltd. Country or region after: China Patentee after: Nanning Boan Technology Consulting Service Co.,Ltd. Address before: 530023 No. 9, Sanli, Changbur Road, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: Feng Xuedong Country or region before: China Patentee before: He Xiaorong |
|
| TR01 | Transfer of patent right |