A funnel with a pre-screening function

Abstract

The present invention discloses a funnel with a pre-screening function, belonging to the technical field of ore screening funnels. The present invention includes a feeding funnel, a funnel guard is arranged at the upper end of the feeding funnel, a funnel guiding trough is connected to the lower end of the feeding funnel, a screening body and a sub-screening funnel are arranged at the bottom of the funnel guiding trough, and a sub-screening guiding trough is connected to the bottom of the sub-screening funnel; a fixed beam is arranged inside the feeding funnel, a screening plate is installed on the fixed beam, a material guiding plate is arranged on one side of the feeding funnel, a screening body guard is connected to the bottom of the material guiding plate, the screening body guard is connected to the bottom of the screening body, and a screening mesh is installed inside the screening body. The present invention has strong powder permeability. The screening plate with a large inclination angle can pre-screen most of the powdery sticky materials and qualified materials. After the materials pass through the screening plate, they still have a large inertial impact on the screening mesh, greatly improving the screening efficiency, avoiding the blockage of the screening mesh, ensuring the subsequent continuous ore supply, and at the same time greatly reducing the labor intensity of the post.

Description

Technical Field

[0001] The invention relates to the technical field of ore screening funnels, and more particularly to a funnel with a pre-screening function. Background Art

[0002] The hopper is frequently used in the ore dressing plant, and plays the role of receiving and transporting materials. The feeding hopper above the circular vibrating screen in the ore dressing plant is used to receive and transport materials. The materials on the screen enter the crusher for crushing, and the materials under the screen enter the under-screen hopper. However, since the iron ore is mostly powder ore and contains a large amount of kaolin minerals, it is easy to cause the circular vibrating screen to be blocked, and the screening efficiency is extremely low, especially in continuous rainy weather, the circular vibrating screen can hardly produce normally. The workers need to frequently clean the screen surface for a long time, which is labor-intensive and has a long downtime. The ball mill is frequently shut down due to insufficient ore supply, which seriously restricts production. Summary of the invention

[0003] 1. Technical problem to be solved by the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a funnel with a pre-screening function. The present invention has a simple structure, low investment cost, and strong powder permeability. The screening plate with a large inclination angle can pre-screen most of the powdery sticky materials and qualified materials. Since the screening plate has a large inclination angle and is above the screen, the material still has a large inertia to impact the screen after passing through the screening plate, which greatly improves the screening efficiency of the screen and avoids screen blockage. At the same time, it also improves the processing capacity of the screen, ensures the subsequent continuous supply of ore, and also greatly reduces the labor intensity of the job.

[0005] 2. Technical solution

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] A funnel with a pre-screening function of the present invention comprises a feeding funnel, wherein the upper end of the feeding funnel is provided with a funnel shield, the lower end of the feeding funnel is connected with a funnel guide trough, a screen body and an under-screen funnel are provided at the bottom of the funnel guide trough, the bottom end of the funnel guide trough passes through the screen body and enters the under-screen funnel, and the bottom of the under-screen funnel is connected with the under-screen guide trough;

[0008] A fixed beam is provided inside the feeding funnel, a screening plate is installed on the fixed beam, a circular arc opening is opened on one side of the feeding funnel, a guide plate is provided at the end of the circular arc opening, a screen body guard is connected to the bottom of the guide plate, the bottom of the screen body guard is connected to the screen body, and a screen is installed in the screen body.

[0009] Furthermore, the funnel shield is arranged directly above the feeding funnel, the funnel shield is connected to the feeding funnel by bolts, and a square observation hole is provided on one side of the funnel shield.

[0010] Further, a cleaning window is provided on one side of the undersize material guiding trough.

[0011] Further, there are two fixing beams which are parallel to each other and are inclined in the middle and lower part inside the feeding hopper, with an inclination angle of 35° - 55°. The two ends of the fixing beams are connected to the feeding hopper by welding. There are several holes on the fixing beams, and the fixing beams are connected to the screening plate by bolts.

[0012] Further, a maintenance window is provided on one side of the screen body shield.

[0013] Further, a pulley is provided at the input end of the feeding hopper. A belt is sleeved on the surface of the pulley. The feeding hopper is a three-sided open hopper, open at the upper part and constricted at the lower part. An arc opening is provided on the inclined panel facing the pulley side.

[0014] Further, the funnel material guiding trough is connected to the feeding hopper by bolts, and the lower end of the funnel material guiding trough is communicated with the undersize hopper.

[0015] Further, the screening plate is in a long strip serrated shape, with a certain distance between the strips. The upper and lower ends of the screening plate are fixed to the fixing beam by bolts.

[0016] Further, the material guiding plate is inclined and arranged between the side opening end of the feeding hopper and the screen body shield, and the material guiding plate guides the materials on the screening plate onto the screen mesh.

[0017] 3. Beneficial effects

[0018] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0019] The structure of the present invention is simple, with low investment cost and strong powder permeability. The screening plate with a large inclination angle can pre-screen most of the powdery sticky materials and qualified materials. Since the inclination angle of the screening plate is large and it is above the screen mesh, the materials still have a large inertia impact on the screen mesh after passing through the screening plate, greatly improving the screening efficiency of the sieve, avoiding screen mesh blockage, simultaneously enhancing the processing capacity of the sieve, ensuring the subsequent continuous ore supply, and greatly reducing the labor intensity of the post. Brief description of the drawings

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a partial top view of the present invention.

[0022] In the figure: 1. Feeding funnel; 2. Funnel feeding chute; 3. Sieve body; 4. Under-sieve funnel; 5. Under-sieve feeding chute; 6. Cleaning window; 7. Funnel guard; 8. Belt; 9. Belt pulley; 10. Observation hole; 11. Material guiding plate; 12. Sieve body guard; 13. Maintenance window; 14. Fixed beam; 15. Screening plate; 16. Sieve mesh; 17. Arc opening. Specific implementation mode

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] Embodiment 1

[0025] From Figure 1-2 It can be seen that a funnel with a pre-screening function in this embodiment includes a feeding funnel 1. A funnel guard 7 is arranged at the upper end of the feeding funnel 1. The lower end of the feeding funnel 1 is connected with a funnel feeding chute 2. A sieve body 3 and an under-sieve funnel 4 are arranged at the bottom of the funnel feeding chute 2. The bottom end of the funnel feeding chute 2 passes through the sieve body 3 and enters the under-sieve funnel 4. The bottom of the under-sieve funnel 4 is connected with an under-sieve feeding chute 5.

[0026] A fixed beam 14 is arranged inside the feeding funnel 1. A screening plate 15 is installed on the fixed beam 14. An arc opening 17 is arranged on one side of the feeding funnel 1. A material guiding plate 11 is arranged at the port of the arc opening 17. The bottom of the material guiding plate 11 is connected with a sieve body guard 12. The bottom of the sieve body guard 12 is connected with the sieve body 3. A sieve mesh 16 is installed inside the sieve body 3.

[0027] The funnel guard 7 is arranged directly above the feeding funnel 1. The funnel guard 7 is connected with the feeding funnel 1 by bolts. A square observation hole 10 is arranged on one side of the funnel guard 7. The observation hole 10 is used to observe the running state of the equipment.

[0028] A cleaning window 6 is arranged on one side of the under-sieve feeding chute 5, which can be used to clean the blocked materials.

[0029] There are two fixed beams 14 which are parallel to each other and are obliquely arranged in the middle and lower part inside the feeding funnel 1. The inclination angle is 35° - 55°. The two ends of the fixed beam 14 are connected with the feeding funnel 1 by welding. There are several holes on the fixed beam 14. The fixed beam 14 is connected with the screening plate 15 by bolts.

[0030] A maintenance window 13 is arranged on one side of the sieve body guard 12, which can be used for subsequent equipment maintenance.

[0031] A belt pulley 9 is arranged at the input end of the feeding funnel 1. A belt 8 is sleeved on the surface of the belt pulley 9. The feeding funnel 1 is a three-sided open funnel, open at the upper part and constricted at the lower part. An arc opening 17 is arranged on the inclined panel facing the belt pulley 9.

[0032] The funnel feeding chute 2 is connected to the feeding funnel 1 by bolts, and the lower end of the funnel feeding chute 2 communicates with the under-screen funnel 4.

[0033] The screening plate 15 is in the shape of long strips with sawteeth, and there is a certain spacing between the strips. The upper and lower ends of the screening plate 15 are fixed to the fixed beam 14 by bolts.

[0034] The material guiding plate 11 is inclined and arranged between the side opening end of the feeding funnel 1 and the screen body shield 12. The material guiding plate 11 guides the materials on the screening plate 15 onto the screen mesh 16.

[0035] In the specific implementation process, the pulley 9 drives the belt 8 to rotate. The materials first fall onto the screening plate 15 with a large inclination angle through the belt 8. The materials that pass through the screening plate 15 directly enter the under-screen funnel 4 along the funnel feeding chute 2. The materials that do not pass through the screening plate 15 fall onto the screen mesh 16 along the arc opening 17 on the side of the feeding funnel 1 and the material guiding plate 11. The materials passing through the screen mesh 16 enter the under-screen funnel 4, and the materials remaining on the screen mesh 16 enter the crusher for crushing. All the materials entering the under-screen funnel 4 are concentrated and enter the under-screen guiding chute 5, and then the next process is carried out to prevent blockage.

[0036] The structure of the present invention is simple, with low investment cost and strong powder permeability. The screening plate 15 with a large inclination angle can pre-screen out most of the powdery sticky materials and qualified materials in advance. Since the inclination angle of the screening plate 15 is large and it is above the screen mesh 16, the materials still have a large inertial impact on the screen mesh 16 after passing through the screening plate 15, greatly improving the screening efficiency of the sieve, avoiding screen blockage, and at the same time enhancing the processing capacity of the sieve, ensuring the subsequent continuous ore supply, and also greatly reducing the labor intensity of the post.

[0037] The present invention pre-sorts by installing a screen mesh 16 with a relatively large inclination angle at the upper part of the funnel, and can pre-separate most of the qualified particle sizes, as well as kaolin and powdered ore, which first enter the funnel, effectively solving the problem of frequent blockage of the circular vibrating screen mesh, improving the screening efficiency and processing capacity, greatly reducing the labor intensity of the post, and providing a strong guarantee for the subsequent ore supply.

[0038] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A funnel with a pre-screening function, comprising a feeding funnel (1), characterized in that: A funnel guard (7) is provided at the upper end of the feeding hopper (1). The lower end of the feeding hopper (1) is connected to a funnel guiding trough (2). A sieve body (3) and an under-sieve hopper (4) are provided at the bottom of the funnel guiding trough (2). The bottom end of the funnel guiding trough (2) passes through the sieve body (3) and enters the under-sieve hopper (4). The bottom of the under-sieve hopper (4) is connected to an under-sieve guiding trough (5). A fixed beam (14) is provided inside the feeding hopper (1). A screening plate (15) is installed on the fixed beam (14). An arc opening (17) is provided on one side of the feeding hopper (1). A material guiding plate (11) is provided at the port of the arc opening (17). The bottom of the material guiding plate (11) is connected to a sieve body guard (12). The bottom of the sieve body guard (12) is connected to the sieve body (3). A sieve mesh (16) is installed inside the sieve body (3). There are two fixed beams (14) which are parallel to each other and are inclined in the middle and lower part inside the feeding hopper (1), and the inclination angle is 35° - 55°. The two ends of the fixed beam (14) are connected to the feeding hopper (1) by welding. There are several holes on the fixed beam (14), and the fixed beam (14) is connected to the screening plate (15) by bolts. A pulley (9) is provided at the input end of the feeding hopper (1). A belt (8) is sleeved on the surface of the pulley (9). The feeding hopper (1) is a three-sided open hopper, open at the upper part and constricted at the lower part. The inclined panel facing the pulley (9) is provided with an arc opening (17). The screening plate (15) is in a long strip serrated shape, and there is a certain distance between the strips. The upper and lower ends of the screening plate (15) are fixed to the fixed beam (14) by bolts. The pulley (9) drives the belt (8) to rotate. The material first falls onto the screening plate (15) with a large inclination angle through the belt (8). The material passing through the screening plate (15) directly enters the under-sieve hopper (4) along the funnel guiding trough (2). The material that does not pass through the screening plate (15) falls onto the sieve mesh (16) along the arc opening (17) on the side of the feeding hopper (1) and the material guiding plate (11). The material passing through the sieve mesh (16) enters the under-sieve hopper (4), and the material remaining on the sieve mesh (16) enters the crusher for crushing. All the materials entering the under-sieve hopper (4) are concentrated and enter the under-sieve guiding trough (5), and then the next process is carried out to prevent blockage.

2. The funnel with a pre-screening function according to claim 1, characterized in that: The funnel guard (7) is arranged directly above the feeding hopper (1). The funnel guard (7) is connected to the feeding hopper (1) by bolts. A square observation hole (10) is provided on one side of the funnel guard (7).

3. A funnel with a pre-screening function according to claim 1, characterized in that: A cleaning window (6) is provided on one side of the under-sieve guiding trough (5).

4. A funnel with a pre-screening function according to claim 1, characterized in that: A maintenance window (13) is provided on one side of the sieve body guard (12).

5. A funnel with a pre-screening function according to claim 1, characterized in that: The funnel guiding trough (2) is connected to the feeding hopper (1) by bolts, and the lower end of the funnel guiding trough (2) is communicated with the under-sieve hopper (4).

6. A funnel with a pre-screening function according to claim 1, characterized in that: The material guiding plate (11) is inclined and arranged between the side opening end of the feeding hopper (1) and the sieve body guard (12), and the material guiding plate (11) guides the material on the screening plate (15) onto the sieve mesh (16).

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