A drum-type multiple screening apparatus

Abstract

The utility model discloses a kind of multi-screening equipment of drum type, belong to mining equipment field, it includes drum screen, first support part, first driving part, collection part, second support part and feeding part;The feeding part is fixed in the second support part;The feeding part includes feeding tank, crushing roller, second driving part and second discharge hopper;The feeding tank top opening, inside is provided with two relatively rotating crushing roller, the second discharge hopper is fixed in the feeding tank bottom;Material enters into the drum screen in the second discharge hopper via the second discharge hopper.The multi-screening equipment of drum type disclosed in the application, the feeding part of drum screen is additionally provided with the crushing roller for crushing, and the material that does not meet the size after screening can be directly put into the feeding part for crushing and then screening again, so that the material crushing and screening are integrated, avoiding long-distance transfer of material for crushing after screening, and improving the efficiency of multi-screening.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment, and in particular to a drum-type multi-screening device. Background Technology

[0002] In the process of processing tailings sand into tailings powder, it is necessary to screen the tailings sand using screening equipment to obtain tailings sand that meets the size requirements. However, tailings sand that meets the size requirements cannot be obtained through a single screening; tailings sand that is too large in size still needs to be crushed and screened again.

[0003] In the prior art, such as the rotary drum screen disclosed in Chinese Patent Publication No. CN106622932A, a rotary drum screen includes a frame system, a drum shell, a rotary screen, and a motor; the drum shell is fixed to the frame at a certain angle, and the rotary drum screen is placed inside the drum shell. In the actual processing of tailings, it is not possible to obtain tailings that meet the size requirements through a single screening. Tailings that are too large in size still need to be crushed and screened again; however, existing rotary drum screens cannot achieve this function and require multiple trips between the rotary drum screen and the crushing equipment. Summary of the Invention

[0004] This utility model provides a drum-type multiple screening device, which aims to solve the problem in the background art that existing drum screens cannot be directly crushed and screened again after screening in multiple screening processes.

[0005] To achieve the above objectives, the present invention adopts the following solution: This utility model provides a drum-type multi-stage screening device, including a drum screen, which is inclined; the drum screen includes at least a first screening section and a second screening section along its length from high to low; the surfaces of the first screening section and the second screening section are respectively provided with a plurality of first screen holes and a plurality of second screen holes, the size of the first screen holes being smaller than the size of the second screen holes; it also includes a first support part located below the drum screen; it also includes a first driving part fixedly disposed on the first support part; the first driving part drives the drum screen to rotate around the central axis of the drum screen; it also includes a collection part, which includes at least a first collection part along its length. The device includes a first collection device and a second collection device, which respectively collect the materials screened out by the first screening section and the second screening section; it also includes a second support part, which is fixed to the first support part; and a feeding part, which is fixed to the second support part; the feeding part includes a feeding box, a crushing roller, a second drive part, and a second discharge hopper; the top of the feeding box is open, and two relatively rotating crushing rollers are arranged inside, which are driven to rotate by the two second drive parts respectively, and the second discharge hopper is fixed to the bottom of the feeding box; the material enters the drum screen through the second discharge hopper.

[0006] Furthermore, the second drive unit includes a second drive motor, a second transmission belt, and a second pulley; the second drive motor is fixed to the second support unit, and the second pulley rotates synchronously with the crushing roller; the second drive motor drives the second pulley to rotate through the second transmission belt.

[0007] Furthermore, the top of the feeding box is also fixedly provided with a feeding pipe and a feeding hopper fixedly connected to the feeding pipe. The cross-sectional shape of the feeding hopper is an isosceles trapezoid that is wider at the top and narrower at the bottom. The second discharging hopper includes a vertical section communicating with the feeding box and an inclined section communicating with the vertical section.

[0008] Furthermore, support columns are fixedly installed at the bottom of both sides of the feed box, and the bottom of the support columns is fixed to the second support part.

[0009] Furthermore, the first drive unit includes a first drive motor, a first transmission belt, a first pulley, and a rotating shaft; the rotating shaft is a stepped shaft, and the first pulley rotates synchronously with the rotating shaft; support seats are provided at both ends of the rotating shaft, and bearings are provided between the support seats and the rotating shaft; the first drive motor drives the first pulley to rotate through the first transmission belt; annular bosses are provided at both ends of the drum screen, and the annular bosses fit against the rotating shaft and rotate with the rotating shaft.

[0010] Furthermore, limit blocks or limit plates are provided on both sides of the rotating shaft that contacts the annular boss.

[0011] Furthermore, the transition sections are set between the first screening section and the second screening section, between the annular boss and the first screening section, and between the annular boss and the second screening section, and the surface of the transition section is solid.

[0012] Furthermore, the first support portion and the second support portion include multiple fixed profiles, and the profiles supporting the drum screen are inclined; a pad is provided between the first drive motor and the profiles.

[0013] Furthermore, the discharge end of the rotary screen is provided with a first discharge hopper, which is located at the end of the rotary screen and fixed to the first support.

[0014] Furthermore, both the first collecting device and the second collecting device include a collecting hopper, a third discharging hopper, and a connecting frame that fixes the collecting hopper and the third discharging hopper together.

[0015] Compared with existing technologies, this utility model has the following advantages: 1. The feed section of the drum screen is equipped with a crushing roller that can be used for crushing. Materials that do not meet the size requirements after screening by the drum screen can be directly put into the feed section for crushing and then screened again, so that material crushing and screening are integrated, avoiding long-distance transfer of materials for crushing after screening and improving the efficiency of multiple screening.

[0016] 2. During the screening of a batch of materials, the crushing and re-screening process of the previous batch of materials that have been screened but do not meet the requirements can be carried out simultaneously, which shortens the waiting time in the screening of multiple batches of materials and improves the efficiency of multiple screening of materials. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a front view of a drum-type multiple screening device provided in an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the feeding section.

[0020] Figure 3 This is a schematic diagram of the internal structure of the feeding section.

[0021] Figure 4 This is a schematic diagram of the structure of the drum screen, the collecting section, and the first support section.

[0022] Figure 5 yes Figure 4 Enlarged view of section A.

[0023] Figure 6 yes Figure 4 Enlarged view of section B in the middle.

[0024] Figure 7 This is a schematic diagram of the collection section.

[0025] Explanation of key component symbols: 1. Rotary drum screen; 11. First screening section; 111. First screen hole; 12. Second screening section; 121. Second screen hole; 13. Annular boss; 14. Transition section; 15. First discharge hopper; 2. First support section; 3. First drive unit; 31. First drive motor; 311. Pad block; 32. First transmission belt; 33. First pulley; 34. Rotating shaft; 341. Limiting block; 342. Limiting plate; 35. Support base; 4. Collection section; 31. First collection device; 411. Collection hopper; 412. Third discharge hopper; 413. Connecting frame; 5. Second support section; 6. Feeding section; 61. Feeding box; 62. Crushing roller; 63. Second drive section; 631. Second drive motor; 632. Second transmission belt; 633. Second pulley; 64. Second discharge hopper; 641. Vertical section; 642. Inclined section; 65. Feeding pipe; 66. Feeding hopper; 67. Support column. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0027] Refer to the accompanying drawings in the instruction manual, such as Figures 1-7 As shown, a drum-type multi-stage screening device, This includes a drum screen 1, which is a cylindrical metal screen. Specifically, such as... Figure 1 As shown, the drum screen 1 is inclined, with the left side higher than the right. The acute angle between the drum screen 1 and the horizontal plane is 2°-5°, which allows the material to slide down from high to low within the drum screen 1 while preventing the material from sliding down too quickly and making it difficult to screen thoroughly. In addition, compared with the screen structure of horizontal screening, the use of the drum screen 1 avoids the problem that material may block the screen holes during horizontal screening, causing the number of usable screen holes to gradually decrease during a single screening process; while the material is screened as the drum screen 1 rotates, it can ensure that the material can continue to be screened through the screen holes located at the bottom of the drum screen 1.

[0028] The drum screen 1 includes at least a first screening section 11 and a second screening section 12 along its length from high to low. The surfaces of the first screening section 11 and the second screening section 12 are respectively provided with multiple first screen holes 111 and second screen holes 121, with the size of the first screen holes 111 being smaller than the size of the second screen holes 121. During the screening of materials of multiple sizes, smaller materials first pass through the first screen holes 111 for screening, while larger materials smoothly pass through the first screening section 11 and enter the second screening section 12 for screening, thus achieving the function of screening materials of different sizes.

[0029] Specifically, the screening equipment also includes a first support part 2, which is composed of multiple profiles that are fixed to each other.

[0030] Specifically, such as Figure 1 , Figure 5The screening equipment also includes a first drive unit 3. The first drive unit 3 includes a first drive motor 31, a first transmission belt 32, a first pulley 33, and a rotating shaft 34. The rotating shaft 34 is a stepped shaft, and the first pulley 33 rotates synchronously with the rotating shaft 34. Support seats 35 are provided at both ends of the rotating shaft 34, and bearings are provided between the support seats 35 and the rotating shaft 34. The support seats 35 are fixed to the profile forming the first support unit 2. The profile used for fixing is inclined, so that the support seats 35 are perpendicular to the profile, while the drum screen 1 is parallel to the profile, thus cooperating with the horizontal setting of the drum screen 1. The first drive motor 31 drives the first pulley 33 to rotate via the first transmission belt 32. The first drive motor 31 is a servo motor, and its motor shaft is also provided with a synchronously rotating drive pulley. During rotation, the drive pulley drives the first pulley 33 on the rotating shaft 34 to rotate, thereby driving the rotation of the rotating shaft 34, and thus allowing the drum screen 1 to rotate around its own axis. In addition, the first transmission belt 32 can also be replaced by a chain. In this case, the drive pulley on the first drive motor 31 is a sprocket, and the first pulley 33 is also a sprocket.

[0031] Furthermore, such as Figure 6 As shown, a pad 311 is provided between the first drive motor 31 and the profile, so that the angle between the first drive motor 31 and the horizontal plane is the same as the angle between the rotating shaft 34 and the horizontal plane, so as to ensure the compatibility of the first drive motor 31, the first rotating belt 32 and the first pulley 33.

[0032] Correspondingly, annular bosses 13 extend outward from both ends of the drum screen 1. These annular bosses 13 fit against the rotating shaft 34 and rotate with it. Specifically, the dimensions and material of the rotating shaft 34 are adjusted according to actual production conditions to ensure it can withstand the weight of the drum screen 1 and the materials inside during rotation. Furthermore, as... Figure 5 As shown, limit blocks 341 or limit plates 342 are provided on both sides of the rotating shaft 34 that contacts the annular boss 13.

[0033] Furthermore, transition sections 14 are set between the first screening section 11 and the second screening section 12, between the annular boss 13 and the first screening section 11, and between the annular boss 13 and the second screening section 12. The surface of the transition section 14 is solid. This allows the material to be fully spread out before screening after falling into the drum screen 1 and at the junction of the first screening section 11 and the second screening section 12, rather than being screened directly.

[0034] In addition, a first discharge hopper 15 is provided at the discharge end of the drum screen 1. The first discharge hopper 15 is located at the end of the drum screen 1 and fixed to the profile in the first support part 2. Materials that do not pass through the first screen hole 111 and the second screen hole 121 are collected through the first discharge hopper 15.

[0035] Specifically, such as Figure 1, Figure 7 As shown, the screening equipment also includes a collection section 4, which includes at least a first collection device 41 and a second collection device 42 along its length. The first collection device 41 and the second collection device 42 collect the materials screened by the first screening section 11 and the second screening section 12, respectively. Both the first collection device 41 and the second collection device 42 include a collection hopper 411, a third discharge hopper 412, and a connecting frame 413 that fixes the collection hopper 411 and the third discharge hopper 412. The connecting frame 413 is composed of two profiles, located at the two ends of the collection hopper 411 and the third discharge hopper 412, respectively, with the upper and lower ends of the profiles fixed to the collection hopper 411 and the third discharge hopper 412, respectively. This creates a perforation between the third discharge hopper 412 and the collection hopper 411, allowing for direct sampling from the third discharge hopper 412.

[0036] Specifically, such as Figure 1 As shown, the screening equipment also includes a second support part 5, which is also composed of multiple profiles.

[0037] Specifically, such as Figures 1-3 As shown, the screening equipment also includes a feeding section 6. The feeding section 6 is fixed to the second support section 5; the feeding section 6 includes a feeding box 61, crushing rollers 62, a second drive section 63, and a second discharge hopper 64. The top of the feeding box 61 is open, and two relatively rotating crushing rollers 62 are arranged inside. The crushing rollers 62 are driven to rotate by two second drive sections 63 respectively. The second discharge hopper 64 is fixed to the bottom of the feeding box 61; the material enters the drum screen 1 through the second discharge hopper 64.

[0038] The second drive unit 63 includes a second drive motor 631, a second transmission belt 632, and a second pulley 633. The second drive motor 631 is fixed to the profile of the second support unit 5, and the second pulley 633 rotates synchronously with the crushing roller 62. The second drive motor 631 drives the second pulley 633 to rotate via the second transmission belt 632. The second pulley 633 is a driven pulley, and the second drive motor 631 is a servo motor. The second drive motor 631 has a driving pulley that rotates synchronously with the motor shaft. The driving pulley drives the second pulley 633 to rotate via the second transmission belt 632, thereby driving the crushing roller 62 to rotate. Figure 2 As shown, two second drive motors 631 are respectively located on the front and rear sides of the feed box 61, and respectively drive the left and right crushing rollers 62 to rotate.

[0039] A feed pipe 65 and a feed hopper 66 fixedly connected to the feed pipe 65 are also fixedly installed at the top of the feed box 61. The cross-sectional shape of the feed hopper 66 is an isosceles trapezoid that is wider at the top and narrower at the bottom. The design of the feed hopper 66 allows the material entering the feed box 61 to accumulate towards the center as much as possible, thereby increasing the contact with the crushing roller 62 and allowing the material to be crushed more thoroughly. The second discharge hopper 64 includes a vertical section 641 connected to the feed box 61 and an inclined section 642 connected to the vertical section 641, which facilitates the crushed material to slide down to the drum screen 1 for screening.

[0040] In addition, support columns 67 are fixedly installed on both sides of the bottom of the feed box 61, and the bottom of the support columns 67 is fixed to the profile of the second support part 5.

[0041] Based on the above, the material screening process is as follows: S1. The material to be screened is crushed after passing through the feed section 6. The crushed material is discharged through the second discharge hopper 64 at the bottom of the feed box 61 and slides into the drum screen 1 for screening. During the screening process of the drum screen 1, at least two different sizes of material can be screened, and the unscreened material is collected through the bottom of the drum screen 1 and the first discharge hopper 15. S2. If the material after the initial screening does not meet the required size, it is poured back into the feed section 6 for crushing until all the material that meets the size requirements is collected.

[0042] Therefore, it can be seen that the drum-type multiple screening device proposed in this application has the following advantages in the above process: 1. The feed section of the drum screen is equipped with a crushing roller that can be used for crushing. Materials that do not meet the size requirements after screening by the drum screen can be directly put into the feed section for crushing and then screened again, so that material crushing and screening are integrated, avoiding long-distance transfer of materials for crushing after screening and improving the efficiency of multiple screening.

[0043] 2. During the screening of a batch of materials, the crushing and re-screening process of the previous batch of materials that have been screened but do not meet the requirements can be carried out simultaneously. The crushing process and the screening process can be carried out at the same time, which shortens the waiting time in screening multiple batches of materials and improves the efficiency of multiple screening of multiple batches of materials.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A drum-type multiple screening device, characterized in that, include: A rotary drum screen is inclined; the rotary drum screen includes at least a first screening section and a second screening section along its length from high to low; the surfaces of the first screening section and the second screening section are respectively provided with a plurality of first screen holes and second screen holes, the size of the first screen hole being smaller than the size of the second screen hole; The first support portion is located below the drum screen; A first driving unit is fixedly mounted on the first support unit; the first driving unit drives the drum screen to rotate around the central axis of the drum screen. The collection section includes at least a first collection device and a second collection device along its length, wherein the first collection device and the second collection device respectively collect the materials screened out by the first screening section and the second screening section; The second support portion is fixed to the first support portion; The feeding section is fixed to the second support section; the feeding section includes a feeding box, a crushing roller, a second drive section and a second discharge hopper; the top of the feeding box is open and two relatively rotating crushing rollers are arranged inside, the crushing rollers are driven to rotate by the two second drive sections respectively, and the second discharge hopper is fixed to the bottom of the feeding box; the material enters the drum screen through the second discharge hopper.

2. The drum-type multiple screening device according to claim 1, characterized in that: The second drive unit includes a second drive motor, a second transmission belt, and a second pulley; the second drive motor is fixed to the second support unit, and the second pulley rotates synchronously with the crushing roller; the second drive motor drives the second pulley to rotate through the second transmission belt.

3. The drum-type multiple screening device according to claim 1, characterized in that: The top of the feeding box is also fixedly provided with a feeding pipe and a feeding hopper fixedly connected to the feeding pipe. The cross-sectional shape of the feeding hopper is an isosceles trapezoid that is wider at the top and narrower at the bottom. The second discharge hopper includes a vertical section communicating with the feed box and an inclined section communicating with the vertical section.

4. The drum-type multiple screening device according to claim 1, characterized in that: Support columns are fixedly installed on both sides of the bottom of the feed box, and the bottom of the support columns is fixed to the second support part.

5. The drum-type multiple screening device according to claim 1, characterized in that: The first drive unit includes a first drive motor, a first transmission belt, a first pulley, and a rotating shaft; the rotating shaft is a stepped shaft, and the first pulley rotates synchronously with the rotating shaft; support seats are provided at both ends of the rotating shaft, and bearings are provided between the support seats and the rotating shaft; the first drive motor drives the first pulley to rotate through the first transmission belt; The drum screen has annular protrusions extending outward at both ends, which fit against the rotating shaft and rotate with the rotating shaft.

6. The drum-type multiple screening device according to claim 5, characterized in that: Limiting blocks or limiting plates are provided on both sides of the rotating shaft that contacts the annular boss.

7. A drum-type multiple screening device according to claim 5, characterized in that: The transition sections are set between the first screening section and the second screening section, between the annular boss and the first screening section, and between the annular boss and the second screening section, and the surface of the transition section is solid.

8. A drum-type multiple screening device according to claim 5, characterized in that: The first support part and the second support part include multiple fixed profiles, and the profiles supporting the drum screen are inclined; a pad is provided between the first drive motor and the profiles.

9. A drum-type multiple screening device according to claim 8, characterized in that: The discharge end of the rotary screen is provided with a first discharge hopper, which is located at the end of the rotary screen and fixed to the first support.

10. A drum-type multiple screening device according to claim 1, characterized in that: Both the first collecting device and the second collecting device include a collecting hopper, a third discharging hopper, and a connecting frame that fixes the collecting hopper and the third discharging hopper together.

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