High-frequency vibrating screen

Abstract

The utility model relates to the field of screening equipment, in particular to a high-frequency vibrating screen which comprises a screening assembly and further comprises an outer shell, the screening assembly is arranged in the outer shell, a feeding port and a discharging port are formed in the outer shell, the screening assembly comprises a flexible screen and a vibrating assembly, connecting beams are arranged at the two ends of the flexible screen, and the vibrating assembly is arranged on the flexible screen. The connecting beam is connected with the inner side wall of the outer shell, and the vibration assembly is arranged below the flexible screen and used for generating vibration and transmitting the vibration to the screening assembly. The screening device has the effects that the screening effect on fine materials is improved, and energy consumption in the screening process is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screening equipment, in particular to a high-frequency vibrating screen. BACKGROUND

[0002] The vibrating screen is a screening machine widely used in material classification, which mainly uses a vibration motor as a vibration source to throw the material up on a flexible screen and move forward in a straight line to realize the classification of the material.

[0003] The vibrating screen is composed of a vibrating body, a damping spring and a supporting leg, and the vibrating body is mainly composed of a side plate, a screen beam, a vibration exciter and a flexible screen, etc. to form a whole, which is driven by the vibration exciter to work and screen the material on the screen surface, and the vibration speed is generally 700-1500 r / min.

[0004] In the related art, the flexible screen is a whole structure, and the screen and the vibrating body vibrate at one frequency, which is not conducive to the screening of small materials, and the whole screen body needs to be vibrated, so the power consumption is large. CONTENT OF THE INVENTION

[0005] In order to improve the screening effect of small materials and save power, the present application provides a high-frequency vibrating screen.

[0006] The high-frequency vibrating screen provided by the present application adopts the following technical scheme:

[0007] The high-frequency vibrating screen comprises a screening assembly and a shell body, the screening assembly is arranged in the shell body, the shell body is provided with a feeding port and a discharging port, the screening assembly comprises a flexible screen and a vibrating assembly, the flexible screen is provided with a connecting beam at both ends, the connecting beam is connected with the inner side wall of the shell body, and the vibrating assembly is arranged below the flexible screen to generate vibration and transmit the vibration to the screening assembly.

[0008] Through the above technical scheme, the vibrating assembly vibrates to drive the flexible screen to vibrate and realize the screening of the material. The flexible screen is arranged in this form, on the one hand, the vibrating assembly directly transmits the vibration to the flexible screen, so that the vibration frequency can reach a higher frequency, which is convenient for the screening of small materials. On the other hand, the shell body does not participate in the vibration, and the overall mass of the flexible screen is relatively light, which is conducive to saving power. At the same time, the vibration inertia is small, so that the overall equipment vibration and noise are small. At the same time, the shell body is arranged outside the screening assembly, and the structure is relatively sealed, which is conducive to reducing dust and is green and environmentally friendly.

[0009] Optionally, the vibrating assembly comprises a vibrating beam arranged along the width direction of the flexible screen and a vibrator mounted on the vibrating beam, both ends of the vibrating beam are provided with damping springs, one end of the damping spring away from the vibrating beam is fixedly connected with the outer shell, the flexible screen abuts against the vibrating beam, and the vibrator is used to generate vibration.

[0010] By adopting the technical scheme, the length of the vibrating beam is utilized to make the vibration more comprehensively transmitted to different positions of the flexible screen, and the screening effect on the materials is improved.

[0011] Optionally, a protective layer is arranged between the vibrating beam and the flexible screen, the protective layer is fixedly connected with the vibrating beam and is made of flexible material.

[0012] By adopting the technical scheme, friction is inevitably generated in the process of vibration transmission between the vibrating beam and the flexible screen, the protective layer is arranged to reduce the abrasion of the flexible screen and improve the service life of the vibrating screen.

[0013] Optionally, hooks are arranged at both ends of the flexible screen, and the hooks are hooked on the connecting beams.

[0014] By adopting the technical scheme, the hooks are used to realize the connection between the flexible screen and the connecting beams, and the flexible screen is convenient to disassemble and assemble.

[0015] Optionally, the connecting beams are at least one of which can rotate around an axis parallel to the width of the flexible screen, and rotating the connecting beams can drive the hooks on the connecting beams to move away from the other connecting beam.

[0016] By adopting the technical scheme, the connecting beams are rotated to drive the hooks to move, so that the flexible screen can be tensioned and the stability of the flexible screen after installation is improved.

[0017] Optionally, the screening assemblies are arranged in multiple groups in a direction perpendicular to the flexible screen.

[0018] By adopting the technical scheme, in the process of screening the materials, the upper flexible screen first screens the materials, and then the materials fall on the lower flexible screen to be screened again, so that the screening effect on the small materials is improved.

[0019] Optionally, each of the screening assemblies comprises multiple screening assemblies arranged along the length direction of the flexible screen.

[0020] By adopting the technical scheme, in the process of screening the materials, the materials first enter the feeding port and then enter the screen surface, and the materials move downward due to the screen surface angle and the vibration of the flexible screen, the arrangement of the multiple screening assemblies improves the screening time of the materials, and effective screening of the materials is realized.

[0021] Optionally, a group of the screening assemblies near the ground divides the inner part of the outer shell into two parts, wherein the cavity near the ground is a material falling cavity, and the cavity above is a screening cavity; the discharge outlets corresponding to the material falling cavity and the screening cavity are two, wherein the discharge outlet corresponding to the material falling cavity is a secondary discharge outlet, and the discharge outlet corresponding to the screening cavity is a primary discharge outlet; the material capable of passing through the mesh of the flexible filter screen can be discharged from the secondary discharge outlet, and the material incapable of passing through the mesh of the flexible filter screen is discharged from the primary discharge outlet.

[0022] By adopting the above technical scheme, the screening assemblies divide the inner part of the outer shell into two parts, the material after double filtration falls into the material falling cavity under the action of gravity, and then is discharged from the discharge outlet corresponding thereto. The material incapable of passing through the mesh of the flexible filter screen is discharged from the discharge outlet corresponding to the screening cavity, thereby facilitating the classification and screening of the material.

[0023] Optionally, the application further comprises a support, and the outer shell is rotationally arranged on the support, and the rotation axis of the outer shell is parallel to the flexible filter screen.

[0024] By adopting the above technical scheme, rotating the outer shell can change the inclination angle of the whole filter screen, adjust the passing amount of the material and the degree of screening efficiency, and quickly adjust the screening performance.

[0025] In summary, the application has at least one of the following beneficial technical effects:

[0026] 1. The vibration beam is fixed on the side plate through damping springs at both ends, and the outer shell does not participate in vibration, so that the overall vibration amount is small, and the power consumption is small.

[0027] 2. The outer shell structure is relatively sealed, dust raising is reduced, and it is green and environmentally friendly.

[0028] 3. The flexible filter screen is hooked on the connecting beam, and the filter screen is convenient and quick to disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application.

[0030] Figure 2 is a schematic diagram of the cross-sectional structure of the embodiment of the application.

[0031] Figure 3 is a schematic diagram of the structure of the screening assembly of the embodiment of the application.

[0032] Figure 4 is a schematic diagram of the structure of the tensioning assembly of the embodiment of the application.

[0033] Fig. 1 is a schematic view of the high-frequency vibrating screen; Fig. 2 is a schematic view of the vibrating assembly; Fig. 3 is a schematic view of the tensioning assembly; Fig. 4 is a schematic view of the support; Fig. 1 shows that the high-frequency vibrating screen comprises an outer shell 1 and a screening assembly 2. The outer shell 1 is hollow inside and is provided with a feeding port 11 and a discharging port 12. The screening assembly 2 is installed inside the outer shell 1. The screening assembly 2 comprises a flexible screen 21 and a vibrating assembly 22. The flexible screen 21 is fixed at both ends, and the vibrating assembly 22 is arranged below the flexible screen 21 and abuts against the flexible screen 21. The vibrating assembly 22 is used to generate vibration and transmit the vibration to the flexible screen 21 abutting against the vibrating assembly 22. In this application, the vibrating assembly 22 directly drives the flexible screen 21 to vibrate, directly acts on the flexible screen 21, and facilitates the screening of small materials. Moreover, the flexible screen 21 is flexible, so that the vibrating assembly 22 has a smaller load, energy is saved, and the screening cost is reduced. DETAILED DESCRIPTION

[0034] The drawings will be described below. Figures 1-4 The application is further described in detail.

[0035] The application discloses a high-frequency vibrating screen.

[0036] Referring to Figure 1 and Figure 2 , the high-frequency vibrating screen comprises an outer shell 1 and a screening assembly 2. The outer shell 1 is hollow inside and is provided with a feeding port 11 and a discharging port 12. The screening assembly 2 is installed inside the outer shell 1. The screening assembly 2 comprises a flexible screen 21 and a vibrating assembly 22. The flexible screen 21 is fixed at both ends, and the vibrating assembly 22 is arranged below the flexible screen 21 and abuts against the flexible screen 21. The vibrating assembly 22 is used to generate vibration and transmit the vibration to the flexible screen 21 abutting against the vibrating assembly 22. In this application, the vibrating assembly 22 directly drives the flexible screen 21 to vibrate, directly acts on the flexible screen 21, and facilitates the screening of small materials. Moreover, the flexible screen 21 is flexible, so that the vibrating assembly 22 has a smaller load, energy is saved, and the screening cost is reduced.

[0037] Referring to Figure 2 and Figure 3 , the vibrating assembly 22 comprises a vibrating beam 221 and a vibrator 222 installed on the vibrating beam 221. The vibrating beam 221 is parallel to the flexible screen 21, and the length direction of the flexible screen 21 is perpendicular to the length direction of the vibrating beam 221. The vibrating beam 221 is provided with damping springs at both ends. The ends of the damping springs away from the vibrating beam 221 are connected to the inner side wall of the outer shell 1, so as to realize the connection between the vibrating beam 221 and the outer shell 1. The side of the vibrating beam 221 away from the ground abuts against the flexible screen 21. The vibrator 222 is used to generate vibration. In this embodiment, the vibrator 222 is a vibrating motor. The vibration frequency of the vibrating motor can reach 6000 r / min, the vibration frequency is high, the vibration intensity is large, and the screening efficiency is high.

[0038] Referring to Figure 2 and Figure 3The vibrating beam 221 comprises a main keel 2211, an abutment plate 2213 and a connecting plate 2212. The main keel 2211 is parallel to the flexible screen 21, and the length direction of the main keel 2211 is perpendicular to the length direction of the flexible screen 21. The connecting plate 2212 is welded on the main keel 2211, and a plurality of connecting plates 2212 are arranged at intervals along the length direction of the main keel 2211. The abutment plate 2213 is arranged at two along the length direction of the flexible screen 21, and the two abutment plates 2213 are arranged on both sides of the connecting plate 2212 and are welded with the connecting plate 2212. The side of the abutment plate 2213 away from the ground abuts on the flexible screen 21. In order to reduce the wear between the abutment plate 2213 and the flexible screen 21, a protective layer 2214 is arranged on the abutment plate 2213, and the protective layer 2214 is in a U-shaped structure, and the opening of the protective layer 2214 is arranged on the abutment plate 2213. The protective layer 2214 abuts on the flexible screen 21, and the protective layer 2214 is made of flexible material, such as polyurethane, rubber and the like, so as to reduce the wear of the flexible screen 21 in the vibration process.

[0039] With reference to Figure 2 and Figure 3 , the length direction of the flexible screen 21 extends along a circular arc trajectory, and a plurality of vibrating assemblies 22 are arranged at intervals along the length direction of the flexible screen 21. In the embodiment, three groups are arranged to improve the screening effect on the material.

[0040] With reference to Figure 2 and Figure 3 , the inside of the outer shell 1 is further provided with two connecting beams 23 and two hooks for fixing the two ends of the flexible screen 21. The two connecting beams 23 are arranged on both sides of the flexible screen 21 along the length direction of the flexible screen 21. The two hooks are fixedly connected to the two ends of the flexible screen 21, and the connecting beam 23 is provided with a scraper corresponding to the hook, and the hook is hooked on the scraper to fix the flexible screen 21.

[0041] With reference to Figure 2 and Figure 3 , at least one of the connecting beams 23 can rotate around an axis perpendicular to the length direction of the flexible screen 21, and only one of the connecting beams 23 can rotate in the embodiment. The connecting beam 23 that can rotate among the two connecting beams 23 is defined as the movable beam 25, and the connecting beam 23 fixedly connected to the outer shell 1 is defined as the fixed beam 24. Rotating the movable beam 25 can drive the hook on the movable beam 25 to approach or move away from the fixed shaft, so as to tension the flexible screen 21.

[0042] With reference to Figure 2 and Figure 3The whole outer shell 1 is rectangular block structure, and the whole outer shell 1 is arranged at an angle with the ground. The feeding port 11 is arranged at one end of the outer shell 1 away from the ground. The screening assemblies 2 are arranged in two groups along the width direction of the outer shell 1. Under the action of gravity and the flexible screen 21, the material filtered through the upper flexible screen 21 falls onto the lower flexible screen 21, and is filtered again through the lower flexible screen 21, so as to facilitate the screening of small materials. The outer shell 1 is provided with a support 4 for supporting the outer shell 1. One end of the outer shell 1 close to the feeding port is rotatably connected to the support 4. The rotation axis of the outer shell 1 is perpendicular to the length direction of the outer shell 1. Rotating the outer shell 4 can change the inclination angle of the flexible screen as a whole, thereby adjusting the throughput of the material and the degree of screening efficiency, so as to conveniently and quickly adjust the screening performance. The support is provided with a lifting device (such as an electric hoist, a winch device, etc.), and rotating the end of the outer shell away from the feeding port can drive the outer shell 1 to rotate. Specifically, a traction roller (not shown in the figure) can be rotatably arranged on the support, a traction rope is fixed on the traction roller, and one end of the traction rope away from the traction roller is fixedly connected with the outer shell. The rotation angle of the outer shell is adjusted by rotating the traction roller, and the rotation of the traction roller is driven by a motor.

[0043] Referring to Figure 1 and Figure 2 , each group of screening assemblies 2 includes a plurality of screening assemblies 2 arranged along the length direction of the outer shell. In this embodiment, each group of screening assemblies 2 is arranged as four. Under the action of the gravity of the material itself, the material rolls and passes through the plurality of screening assemblies 2 in turn, so as to realize comprehensive screening of the material.

[0044] Referring to Figure 1 and Figure 2 , the group of screening assemblies 2 close to the ground divides the inner space of the outer shell 1 into two parts, i.e. a material falling cavity 14 located below and a screening cavity 13 located above. The discharge port 12 on the outer shell 1 is arranged as two, which are defined as a primary discharge port 121 and a secondary discharge port 122. The primary discharge port 121 communicates with the screening cavity 13, and the secondary discharge port 122 communicates with the material falling cavity 14. The large particle material that cannot pass through the flexible screen 21 can be discharged from the primary discharge port 121, and the small material (which can also be understood as the material with qualified particle size) is discharged from the secondary discharge port 122.

[0045] Referring to Figure 1 and Figure 2 , the outer shell 1 is provided with a tensioning assembly 3, which includes a torsion rod 31 connected with the movable beam 25, and the torsion rod 31 is perpendicular to the rotation axis of the movable beam 25. By turning the torsion rod, the movable beam can be rotated, so as to realize the tensioning of the flexible screen 21.

[0046] Referring to Figure 2 andFigure 4 Figure 2 Figure 4 The tensioning assembly 3 further comprises a pulling member 32, which is arranged between two adjacent screening assemblies 2 in the same group of screening assemblies 2, and two ends of the pulling member 32 are connected with two torsion rods 31 respectively. A plane coinciding with the rotation axes of the two movable beams 25 is defined as a median plane, and an end of the torsion rod 31 away from the rotation axis of the movable beam 25 is defined as a force applying end, the force applying ends of the two torsion rods 31 are located on two sides of the median plane respectively, and the ends of the pulling member 32 are connected with the force applying ends of the two torsion rods 31 respectively. The pulling member 32 comprises a pull rod 321 and a tension spring 322, the pull rod 321 and the tension spring 322 are connected in series, and the force applying ends of the two torsion rods 31 have a tendency to move towards each other under the action of the tension spring 322, so as to simultaneously drive the two movable beams 25 to rotate in the same direction, and realize the simultaneous tensioning of the two flexible screen meshes 21.

[0047] The implementation principle of the high-frequency vibrating screen according to the embodiment of the present application is as follows: the flexible screen mesh 21 is attached to the vibrating assembly 22, and the vibrating assembly 22 directly transmits vibration to the flexible screen mesh 21, on the one hand, the flexible screen mesh 21 has small mass, so that the electric energy can be saved, and on the other hand, the transmission of vibration is more direct, and the vibration frequency is higher, so that the screening of small materials is facilitated. Meanwhile, the screening assembly 2 is arranged inside the outer shell 1, so that the generation of dust raising is reduced.

[0048] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A high frequency vibrating screen comprising a screening assembly (2), characterized in that, Also include the outer shell (1), the screening assembly (2) is arranged inside the outer shell (1), the outer shell (1) is provided with a feed inlet (11) and a discharge outlet (12), the screening assembly (2) includes a flexible screen (21) and a vibration assembly (22), the flexible screen (21) both ends are provided with connecting beam (23), connecting beam (23) is connected with the inner side wall of the outer shell (1), the vibration assembly (22) is arranged below the flexible screen (21), for generating vibration, and is transmitted to the screening assembly (2).

2. A high frequency vibrating screen according to claim 1, characterised in that, The vibration assembly (22) includes a vibration beam (221) arranged along the width direction of the flexible screen (21) and a vibrator (222) mounted on the vibration beam (221), both ends of the vibration beam (221) are provided with shock absorbing springs, one end of the shock absorbing spring away from the vibration beam (221) is fixedly connected with the outer shell (1), the flexible screen (21) abuts against the vibration beam (221), and the vibrator (222) is used for generating vibration.

3. A high frequency vibrating screen according to claim 2, characterised in that, The vibration beam (221) and the flexible screen (21) are provided with a protective layer (2214), the protective layer (2214) is fixedly connected with the vibration beam (221) and is made of flexible material.

4. A high frequency vibrating screen according to claim 1, characterised in that, The flexible screen (21) is provided with a hook at both ends, and the hook is hooked on the connecting beam (23).

5. A high frequency vibrating screen according to claim 4, characterised in that, The connecting beam (23) can rotate around an axis parallel to the width of the flexible screen (21), and rotating the connecting beam (23) can drive the hook on the connecting beam (23) away from the other connecting beam (23).

6. A high frequency vibrating screen according to claim 5, characterised in that, The screening assemblies (2) are arranged in multiple groups in a direction perpendicular to the flexible screen (21).

7. A high frequency vibrating screen according to claim 6, characterised in that, Each group of screening assemblies (2) includes a plurality of screening assemblies (2) arranged along the length direction of the flexible screen (21).

8. A high frequency vibrating screen according to claim 7, characterised in that, The screening assemblies (2) located close to the ground divide the inner space of the outer shell (1) into two parts, wherein the cavity located close to the ground is a feeding cavity (14), and the cavity located above is a screening cavity (13), the discharge outlet (12) is provided with two discharge outlets corresponding to the feeding cavity (14) and the screening cavity (13), wherein the discharge outlet corresponding to the feeding cavity (14) is a secondary discharge outlet (122), and the discharge outlet corresponding to the screening cavity (13) is a primary discharge outlet (121), the material capable of passing through the mesh of the flexible screen (21) can be discharged from the secondary discharge outlet (122), and the material incapable of passing through the mesh of the flexible screen (21) can be discharged from the primary discharge outlet (121).

9. A high frequency vibrating screen according to claim 7 or 8, characterised in that, Also include a support (4), the outer shell (1) is rotatably arranged on the support (4), and the rotation axis of the outer shell (1) is parallel to the flexible screen (21), and rotating the outer shell (1) can change the angle of the flexible screen (21).

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