Discharging drum screen

Abstract

The utility model discloses a discharging drum screen, and relates to the technical field of ore dressing and grinding equipment. A spiral guide blade is connected into the screen drum in a fastened mode and composed of a plurality of guide plates arranged at intervals. When ore pulp materials are screened, small-particle materials can be discharged from screen seams of the screen drum and can also penetrate through meshes of the guide blades or gaps between every two adjacent guide plates, the situation that the positions, corresponding to the front sides of the guide blades, of the screen drum are abraded fast is avoided, and the service life of the screen drum is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and beneficiation equipment, in particular to a discharge cylindrical screen. Background Art

[0002] As is known, at the tail of a wet ball mill, a cylindrical screen is usually installed, and its main function is to screen out large pieces of ore entrained in the mill discharge; for example, Chinese Patent (Publication No.: CN220927327U) discloses a double-layer cylindrical screen; this patent includes a primary screen cylinder and a primary spiral belt arranged inside the primary screen cylinder. A coaxial secondary screen cylinder is fixedly supported inside the primary screen cylinder, and a secondary spiral belt is arranged on the inner side wall of the secondary screen cylinder; it is found in actual application that both the primary spiral belt and the secondary spiral belt are of an integral spiral blade structure. The integral spiral blade will block the flow of pulp materials, resulting in more pulp materials passing through the screen slots in front of the spiral blade at a higher speed; this leads to an excessively high wear rate of the screen slots in front of the spiral blade, and the screen bars in this part are prone to premature damage, seriously shortening the service life of the entire cylindrical screen; the above defects are problems that need to be urgently solved by those skilled in the art. Summary of the Utility Model

[0003] In order to overcome the deficiencies in the background art, the utility model discloses a discharge cylindrical screen.

[0004] To achieve the above-mentioned invention purpose, the utility model adopts the following technical solutions:

[0005] A discharge cylindrical screen includes a screen cylinder; a spiral guide vane is fixedly connected inside the screen cylinder, and the guide vane is composed of a plurality of spaced guide plates.

[0006] Preferably, the plate surface of the guide plate is inclined.

[0007] Preferably, an inclined dividing vane is arranged on one side of the guide plate.

[0008] Preferably, the screen cylinder includes a plurality of spaced barrel hoops; a plurality of screen bars are circumferentially arranged at intervals along the inner edge of the barrel hoop; or an annular screen is arranged between two adjacent barrel hoops.

[0009] Preferably, a flange is arranged at the feed end of the barrel hoop.

[0010] Due to adopting the above-mentioned technical solutions, the utility model has the following beneficial effects:

[0011] ①A discharge cylinder sieve disclosed by the present utility model has a simple structure, is easy to assemble, and has a long service life. The guiding vanes are composed of a plurality of guiding plates arranged at intervals. That is, small particle materials can not only be discharged from the sieve slots of the sieve cylinder, but also pass through the gaps between the surfaces of the guiding vanes, thereby effectively reducing the blockage of the guiding vanes to the pulp materials, enabling the small particle materials to be quickly dispersed in the sieve cylinder, and improving the screening efficiency. At the same time, it avoids the small particle materials from being discharged from the sieve slots in front of the guiding vanes, resulting in faster wear at the position of the sieve cylinder corresponding to the front side of the guiding vanes.

[0012] ②The surface of the guiding plate is inclined or an inclined dividing blade is provided on one side of the guiding plate. That is, the surface of the guiding plate is not perpendicular to the axis of the sieve cylinder, and the dividing blade is not perpendicular to the axis of the sieve cylinder. When the sieve cylinder rotates to screen the pulp materials, the guiding vanes can push the large particle materials that cannot pass through the sieve slots from the feeding end of the sieve cylinder to its discharging end. At the same time, due to the inclined arrangement of the guiding plate and the dividing blade, the guiding vanes and the dividing blade can form a cutting effect on the pulp materials when the sieve cylinder rotates, enabling the small particle materials in the pulp materials to pass through the gaps between two adjacent guiding plates, enabling the small particle materials to be further quickly dispersed in the sieve cylinder, thereby improving the screening efficiency and delaying the wear at the position of the sieve bars corresponding to the front side of the guiding vanes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is a schematic structural view of the inclined arrangement of the guiding plate;

[0015] Figure 3 is a schematic structural view of the dividing blade.

[0016] In the figure: 1, cylinder hoop; 2, sieve cylinder; 3, guiding vanes; 4, flange; 5, dividing blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model can be explained in detail through the following embodiments. The purpose of disclosing the present utility model is to protect all technical improvements within the scope of the present utility model. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, it is only corresponding to the drawings of the present application for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation.

[0018] Embodiment 1, in combination with the attached Figure 1, A discharging cylindrical screen, comprising a screen cylinder, the screen cylinder includes a plurality of hoop 1 arranged at intervals; a plurality of screen bars 2 are circumferentially arranged at intervals along the inner edge of the hoop 1; or an annular screen is provided between two adjacent hoops 1; a spiral guide vane 3 is fixedly connected inside the screen cylinder; the pulp material ground by the mill can enter the screen cylinder from the feed end of the screen cylinder, and the small particle material in the pulp material is discharged from the screen slots of the screen cylinder; when in use, a flange 4 is welded or screwed and fixedly connected to the feed end of the screen cylinder, and the discharge end of the screen cylinder is coaxially and fixedly connected to the discharge end of the mill through the flange 4, and the screen cylinder is driven by the mill to rotate to achieve the purpose of screening the pulp material.

[0019] The guide vane 3 is composed of a plurality of guide plates arranged at intervals, that is, the large particle material in the pulp material cannot pass through the screen slots of the screen cylinder, and the large particle material is gradually pushed to the discharge end of the screen cylinder under the action of the guide vane 3 and then discharged from the screen cylinder; the small particle material can not only be discharged from the screen slots of the screen cylinder, but also pass through the gap between two adjacent guide plates of the guide vane 3, thus effectively reducing the blockage of the guide vane 3 to the pulp material, enabling the small particle material to be quickly dispersed in the screen cylinder and improving the screening efficiency; at the same time, it is avoided that the small particle material can only be discharged from the screen slots in front of the guide vane 3, resulting in faster wear of the position of the screen cylinder corresponding to the front side of the guide vane 3, and the front side of the guide vane 3 is the side corresponding to the feed end of the screen cylinder.

[0020] Example 2, in combination with the attached Figures 1 - 2 , A discharging cylindrical screen, different from Example 1 in that on the basis of Example 1, the plate surface of the guide plate is inclined; as shown in the attached Figure 2 As shown, the plate surface of the guide plate is not perpendicular to the axis of the screen cylinder. When the screen cylinder rotates to screen the pulp material, the guide vane 3 can push the large particle material that cannot pass through the screen slots from the feed end of the screen cylinder to its discharge end; at the same time, due to the inclined plate surface of the guide plate, the guide plate can form a cutting effect on the pulp material when the screen cylinder rotates, enabling the small particle material in the pulp material to pass through the gap between the plate surfaces of two adjacent guide plates, enabling the small particle material to be further quickly dispersed in the screen cylinder, thereby improving the screening efficiency and reducing the wear degree of the position of the screen cylinder corresponding to the front side of the guide vane 3;

[0021] It should be noted that the inclination direction of the guide plate needs to be set according to the rotation direction of the screen cylinder so that the guide plate can form a cutting effect on the pulp material when the screen cylinder rotates; at the same time, when the cylindrical screen rotates, the large particle material can slide along the intersection of the guide vane 3 and the inner wall surface of the screen cylinder, and then push out the large particle blocks.

[0022] Example 3, in combination with the attached Figures 1 - 3 , A discharging cylindrical screen, different from Example 1 in that on the basis of Example 1 or 2, an inclined dividing blade 5 is provided on one side of the guide plate; as shown in the attached Figure 3As shown, the plate surface of the dividing blade 5 is not perpendicular to the axis of the cylindrical sieve, and the dividing blade 5 is inclined along the spiral direction of the helix. When the sieve cylinder rotates to screen the pulp material, the guiding blade 3 can push the large-particle material that cannot pass through the sieve slots from the feed end of the sieve cylinder to its discharge end; at the same time, due to the inclined setting of the dividing blade 5, when the sieve cylinder rotates, the dividing blade 5 can cut the pulp material, so that the small-particle material in the pulp material can pass through the gaps between two adjacent dividing blades 5 and between two adjacent guiding blades 3, enabling the small-particle material to be further quickly dispersed in the sieve cylinder, thereby improving the screening efficiency and delaying the wear of the sieve bar 2 at the front side position corresponding to the guiding blade 3;

[0023] It should be noted that the inclination direction of the dividing blade 5 needs to be set according to the rotation direction of the sieve cylinder, so that the dividing blade 5 can cut the pulp material when the sieve cylinder rotates; the dividing blade 5 is fixedly connected to the sieve cylinder.

[0024] The parts not detailed in the present utility model are prior art. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, aiming to include all changes falling within the meaning and scope of the equivalent elements in the present utility model.

Claims

1. A discharge drum screen, characterized in that: It comprises a screen cylinder; a spiral guide blade (3) is fastened to the inside of the screen cylinder, and the guide blade (3) is composed of a plurality of guide plates arranged at intervals.

2. The discharge drum screen according to claim 1, characterized in that: The plate surface of the guide plate is arranged inclined.

3. The discharge drum screen according to claim 2, characterized in that: An inclined dividing blade (5) is provided on one side of the guide plate.

4. The discharge drum screen according to claim 1, characterized in that: The screen cylinder comprises a plurality of cylinder hoops (1) arranged at intervals; a plurality of screen bars (2) are arranged at intervals in the circumferential direction inside the cylinder hoops (1); or an annular screen is provided between two adjacent cylinder hoops (1).

5. The discharge drum screen according to claim 4, characterized in that: The feeding end of the tube hoop (1) is provided with a flange (4).

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