CN108031643A - A kind of circular impact screen - Google Patents

Abstract

The invention discloses a circular vibrating screen, which comprises a vibration source assembly and a vibration-parameter assembly. The vibration-parameter assembly is installed on the upper end of the vibration source assembly. A flange bearing seat is installed in the center of the upper end of the mounting plate, and a transition shaft is installed longitudinally in the flange bearing seat, and the transition shaft is interference fit with the flange bearing seat through the bearing; when the present invention carries the vibration through the transition bearing The wear of the motor reduces the damage of the motor. The coupling weakens the direct vibration of the transition shaft, thereby reducing the wear of the transition shaft. The L-shaped expansion ring can compress the screen through the fixing bolts, and at the same time make the screen expand when it is compressed. , to prevent the wrinkled screen from affecting the screening, the pressure spring prevents the loosening of the fixing bolts during vibration, increases the flexibility of the screen surface, and prevents the rubber ball from damaging the screen when the vibration is excessive, and the rubber pad on the upper end of the L-shaped expansion ring , reduce the damage of the L-shaped expansion ring to the screen, and increase the vibration effect of the screen.

Description

A circular vibrating screen

technical field

The invention relates to the technical field of vibrating screen equipment, in particular to a circular vibrating screen.

Background technique

The circular vibrating screen is a high-precision fine powder screening equipment with low noise and high efficiency. It takes 3-5 minutes to change the screen quickly. The vertical vibrating screen uses a vertical motor as the power source to transmit the power to the excitation source through a triangle belt. The upper and lower ends of the excitation source are equipped with eccentric weights, which convert the rotation of the excitation source into three dimensions of horizontal, vertical and inclined. Movement, and then pass this movement to the screen surface. Adjusting the phase angle of the upper and lower ends can change the movement track of the material on the screen surface.

The screen is one of the most important spare parts in the vibrating screening equipment, which has a vital impact on the screening accuracy and output of the material. When the amount is too large, the screen of the vibrating screen will be broken. At this time, the vibrating screen cannot perform the screening operation, and a new screen must be replaced. In the prior art, the installation of the screen is usually carried out by manual tensioning or equipment tooling. Tensioning, then press-fitting, manual tensioning and unevenness will easily cause wrinkles, which will affect the filtration efficiency and service life of the screen. The equipment tooling requires specific tensioning tools, and the process is complicated, which increases the replacement cost and reduces the efficiency of the tooling.

Contents of the invention

The purpose of the present invention is to provide a circular vibrating screen to solve the problem that in the prior art, the installation of the screen usually uses manual tensioning or equipment tooling for tensioning, and then press-fits, manual tensioning is uneven and easy to cause wrinkles , affect the filtration efficiency and service life of the screen, the equipment tooling needs specific tensioning tooling, the process is complicated, the replacement cost is increased, and the efficiency of the tooling is reduced.

To achieve the above object, the present invention provides the following technical solutions:

A circular vibrating screen, comprising a vibration source assembly and a vibration-parallel assembly, the vibration-parallel assembly is installed on the upper end of the vibration source assembly, the vibration source assembly includes a base, and a mounting plate is horizontally arranged inside the base, the A flange bearing seat is installed in the center of the upper end of the mounting plate, and a transition shaft is longitudinally installed in the flange bearing seat, and the transition shaft is fitted with the flange bearing seat through bearing interference, and a motor is arranged on one side of the transition shaft. The motor and the transition shaft are driven by a V-belt. A coupling is installed on the upper end of the transition shaft. A vibrator is arranged above the coupling. Eccentric weights are symmetrically installed on the central shaft of the vibrator. The hammer is located at the upper and lower ends of the vibrator, and the lower end of the central shaft of the vibrator passes through the eccentric weight to connect with the coupling. The vibration-parameter assembly includes an upper base plate, the lower end of the upper base plate is respectively connected to the upper end of the base through springs in the circumferential direction, and the upper end of the upper base plate is sequentially provided with a third screen ring and a second screen ring from bottom to top. 1. The first screen ring and the dust-proof screen cover, filter assemblies are arranged between the third screen ring and the second screen ring and between the second screen ring and the first screen ring, and the upper machine seat plate and the first screen ring The outer connections of the third screen ring, the third screen ring and the second screen ring, the second screen ring and the first screen ring, and the first screen ring and the dustproof screen cover pass through the third beam ring, the second beam ring, the A bundle ring and the screen cover bundle ring are clamped and pressed into connection.

Preferably, a quick connector and an extended quick connector of the female template are provided in the horizontal and vertical directions in the female template, the quick connector is connected to the cooling water channel, and the extended quick connector of the female template is used for external connection of high-temperature water or high-temperature steam, Through the channel inside the mold, the surface of the master core is heated up rapidly.

Preferably, the filter assembly includes a ball holder, a screen support is provided on the upper end of the ball holder, and a screen is provided on the upper end of the screen support.

Preferably, the screen support is a ring support with a Z-shaped cross-section formed by vertically connecting the upper circular plate and the lower circular plate through a vertical ring, and the screen is pressed through the top of the lower circular plate. The ring is press-fitted on the screen support, and the upper ring plate forms a cavity between the screen and the ball support plate.

Preferably, a ball retaining ring is arranged in the cavity, and 2-3 rubber balls are placed in the ball retaining ring.

Preferably, the front end of the screen bracket is provided with an L-shaped expansion ring, and the L-shaped expansion ring is positioned and connected with the upper circular plate by fixing bolts arranged inside the upper circular plate, and the L-shaped expansion ring A pressure spring is arranged between the upper ring plate and the upper ring plate.

Preferably, a rubber pad is provided on the upper end of the L-shaped expansion ring.

Compared with prior art, the beneficial effect of the present invention is:

(1) Wear when the transition shaft bears vibration, reduce damage to the motor, and improve the service life of the motor. The coupling weakens the direct vibration of the transition shaft, thereby reducing the wear of the transition shaft and improving the service life of the transition shaft;

(2) The screen bracket is equipped with wire mesh meshes with different requirements. The upper part of the lower circular plate and the corresponding position of the pressure ring adopt a V-shaped groove structure, press the wire mesh, the rubber ball resonates and jumps, hits the screen, and clears the screen. The function of the net solves the visible phenomenon of the material in the filtering process, and ensures the screening accuracy and processing capacity;

(3) The L-shaped expansion ring can compress the screen through the fixing bolts, and at the same time make the screen expand when it is compressed, so as to prevent the wrinkled screen from affecting the screening, and the L-shaped expansion ring and the upper ring There is a pressure spring between the plates, which prevents the loosening of the fixing bolts during vibration, and at the same time increases the flexibility of the screen surface to prevent the rubber ball and the screen from being damaged due to excessive vibration. The upper end of the L-shaped expansion ring is provided with a The rubber pad reduces the damage of the L-shaped expansion ring to the screen and increases the vibration effect of the screen.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention;

Fig. 2 is a partial enlarged view of A place of the present invention;

Fig. 3 is a vibration screening state diagram when the eccentric weight included angle of the present invention is 15°;

Fig. 4 is a vibration screening state diagram when the included angle of the eccentric weight of the present invention is 45°.

In the figure: 1-machine base; 2-installation plate; 3-flange bearing seat; 4-transition shaft; 5-bearing; 6-motor; 7-triangular belt; 8-coupling; 9-vibrator; -eccentric weight; 11-funnel-shaped mounting bracket; 12-upper base plate; 13-spring; 14-third screen ring; 15-second screen ring; 16-first screen ring; 17-dust screen cover ; 18-the third beam ring; 19-the second beam ring; 20-the first beam ring; 21-screen cover beam ring; Lower ring plate; 233-vertical ring; 24-screen; 25-pressure ring; 26-blocking ring; 27-rubber ball; ; 31 - rubber pad.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1. In Embodiment 1 of the present invention, a circular vibrating screen includes a vibration source component and a vibration component. The vibration source component is installed on the upper end of the vibration source component. A mounting plate 2 is installed horizontally. A flange bearing seat 3 is installed in the center of the upper end of the mounting plate 2. A transition shaft 4 is installed longitudinally inside the flange bearing seat 3. The transition shaft 4 bears wear when vibrating, reduces damage to the motor 6, and improves the performance of the motor. The service life of 6, the transition shaft 4 is interference fitted with the flange bearing seat 3 through the bearing 5, a motor 6 is installed on one side of the transition shaft 4, the motor 6 and the transition shaft 4 are driven by a V-belt 7, the motor 6 increases the output power, and the transition shaft The upper end of 4 is equipped with a coupling 8, which weakens the direct vibration of the transition shaft 4, thereby reducing the wear of the transition shaft 4 and improving the service life of the transition shaft 4. A vibrator 9 is arranged above the coupling 8, and the vibrator 9. The eccentric weights 10 are installed symmetrically on the central shaft respectively. The eccentric weights 10 are located at the upper and lower ends of the vibrator 9. The eccentric weights 10 can adjust the phase angle to facilitate the screening effect of different materials. The lower end of the vibrator 9 center shaft Through the eccentric weight 10, it is connected with the coupling 8, and the vibrator 9 is fixedly connected with the vibration part through the funnel-shaped mounting bracket 11 installed on the outside of the vibrator 9. The circumferential direction of the lower end is respectively connected to the upper end of the machine base 1 through springs 13, and the upper end of the upper machine base plate 12 is sequentially provided with a third screen ring 14, a second screen ring 15, a first screen ring 16 and a dustproof screen cover 17, Between the third screen circle 14 and the second screen circle 15 and between the second screen circle 15 and the first screen circle 16, filter assemblies are arranged. The connection between the second sieve circle 15, the second sieve circle 15 and the first sieve circle 16, the first sieve circle 16 and the dustproof screen cover 17 passes through the third beam ring 18, the second beam ring 19, the first The beam ring 20 and the sieve cover beam ring 21 are clamped and pressed together, and the material is fed in from the top inlet, fully screened on the screen 24, and discharged from the outlet. The position of the outlet can be changed arbitrarily along the circumferential direction. Easy to discharge.

Referring to Fig. 1-2, in the second embodiment of the present invention, the filter assembly includes a ball holding plate 22, the upper end of the ball holding plate 22 is provided with a screen support 23, and the upper end of the screen support 23 is provided with a screen 24, and the screen support 23 consists of The upper ring plate 231 and the lower ring plate 232 are vertically connected by a vertical ring 233 to form a Z-shaped ring support, and the screen 24 is pressed onto the screen through the pressure ring 25 on the upper end of the lower ring plate 232 On the mesh support 23, the screen mesh support 23 is equipped with different required wire mesh numbers, the upper end of the lower ring plate 232 and the corresponding position of the pressure ring 25 adopt a V-shaped groove structure to compress the wire mesh, and the upper ring plate 231 will A cavity is formed between the screen cloth 24 and the ball support plate 22, and a ball blocking ring 26 is arranged in the cavity, and 2-3 rubber balls 27 are placed in the ball blocking ring 26, and the rubber balls 27 resonate and jump, and hit the screen cloth 24, It plays the role of clearing the screen, which solves the phenomenon of the material being seen in the filtering process, and ensures the screening accuracy and processing capacity. The front end of the screen support 23 is provided with an L-shaped expansion ring 28, and the L-shaped expansion ring 28 is installed on the upper The fixing bolt 29 inside the ring plate 231 is positioned and connected with the upper ring plate 231, and the L-shaped expansion ring 28 can compress the screen cloth 24 through the fixing bolt 29, and simultaneously make the screen cloth 24 expand and tighten when tightening, so as to prevent The pleated screen 24 affects the screening, and a pressure spring 30 is arranged between the L-shaped expansion ring 28 and the upper ring plate 231. The pressure spring 30 prevents the fixing bolt 29 from loosening during vibration, and simultaneously increases the screen 24. The flexibility of the surface prevents the rubber ball 27 from damaging the screen 24 when the vibration of the screen 24 is excessive. The upper end of the L-shaped expansion ring 28 is provided with a rubber pad 31 to reduce the damage of the L-shaped expansion ring 28 to the screen 24 and increase the screen size. Vibration effect of net 24.

Please refer to Figures 1-4, in the third embodiment of the present invention, the vibrating screen is driven by the operation of the motor 6 to excite the product of the vibrator 9, which is connected by a spring 13 to make the vibration component vibrate in a complex rotation. This vibration track is a A complex three-dimensional curve in space, which is projected horizontally as a circle and projected on two vertical planes as an ellipse (that is, three-dimensional movement of up and down, left and right, and tilting), adjusts the phase of the vibrator 9 up and down eccentric weight 10 Angle can change the movement track of the material on the screen surface. When the upper and lower eccentric weights 10 overlap and the phase angle is 0°, the material flows rapidly from the center to the four corners, forming an outward divergence shape, which is suitable for coarse-grained screening; When the phase angle of the weight 10 is at 15°, the material is in a general vortex motion, and its trajectory is shown in Figure 3, which is suitable for ordinary screening; when the phase angle of the upper and lower eccentric weights 10 is at 45°, the material is in a vortex with the longest period Movement, its trajectory is shown in Figure 4, which is suitable for precision screening; when the phase angle of the upper and lower eccentric weights 10 is at 90°, the materials are concentrated from the surrounding to the center, forming an inward gathering shape, which is suitable for wet material screening.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. a kind of circular impact screen, including vibration source component and ginseng are shaken component, it is characterised in that：The vibration source component upper end is provided with Join the component that shakes, the vibration source component includes engine base, and the base inner has been horizontally disposed with installing plate, the installing plate upper end center Flange shaft bearing is installed, transition axis is longitudinally provided with the flange shaft bearing, the transition axis is interference fitted by bearing Flange shaft bearing, the transition axis side are provided with motor, and the motor passes through V -- belt Drive, the transition axis with transition axis Upper end is provided with shaft coupling, is provided with vibrator above the shaft coupling, is respectively symmetrically installed on the vibrator central rotating shaft There is eccentric hammer, the eccentric hammer is located at the top and bottom position of vibrator, and the vibrator central rotating shaft lower end passes through Eccentric hammer is connected with shaft coupling, the vibrator by the outside of vibrator infundibulate mounting bracket and the ginseng component that shakes consolidate Connect, the component that shakes of joining includes upper frame plate, and the upper frame plate lower circumferential direction passes through spring respectively and engine base upper end connects Connect, the upper frame plate upper end is disposed with the 3rd sieve circle, the second sieve circle, the first sieve circle and dust-proof screen cover, institute from bottom to up State and be both provided with filter assemblies, the upper frame plate between the second sieve circle and the first sieve circle between the 3rd sieve circle and the second sieve circle It is connected with the 3rd sieve circle, the 3rd sieve circle with the second sieve circle, the second sieve circle with the first sieve circle, the first sieve circle with the outside of dust-proof screen cover Place is pressed by the 3rd beam ring, the second beam ring, the first beam ring and the clamping of screen cover beam ring respectively to be connected.

A kind of 2. circular impact screen according to claim 1, it is characterised in that：The filter assemblies include ball supporting plate, institute State ball supporting plate upper end and be provided with screen frame, the screen frame upper end is provided with sieve.

A kind of 3. circular impact screen according to claim 2, it is characterised in that：The screen frame is by upper ring plate with The section that Circular Plate is formed by vertical annulus vertical connection is the circle ring rack of Z-shaped, and the sieve passes through in lower Circular Plate The pressure ring at end is fitted on screen frame, and upper ring plate will form cavity between sieve and ball supporting plate.

A kind of 4. circular impact screen according to claim 3, it is characterised in that：Circle of blocking, institute are provided with the cavity State in circle of blocking and be placed with 2-3 ball.

A kind of 5. circular impact screen according to claim 3, it is characterised in that：The screen frame front end is provided with L-type Distensible ring, the L-type distensible ring is positioned by being arranged on fixing bolt inside upper ring plate and is connected with upper ring plate, and L Compression spring is provided between type distensible ring and upper level board.

A kind of 6. circular impact screen according to claim 5, it is characterised in that：The L-type distensible ring upper end is provided with rubber Rubber cushion.