Ore screening device under groove

Abstract

The utility model relates to the technical field of screening devices, in particular to an ore screening device under a groove. According to the technical scheme, the screening device comprises a screening groove, a bottom frame, an air pipe, a screening plate, a supporting plate and a vibration motor, the screening plate is arranged on the inner wall of the lower end of the screening groove, the bottom frame and the screening groove are provided with the air pipe in a penetrating mode, a draught fan is embedded in one end of the air pipe, a top cover is arranged at the upper end of the screening groove, and a push plate is arranged in the screening groove. A hydraulic rod is arranged at one end of the screening groove, a closing cover is arranged at an opening of the screening groove, a top cover is arranged at the upper end of the screening groove, a vibration motor is arranged at the lower end of the screening plate, a supporting plate is arranged in the bottom frame, a spring is arranged between the supporting plate and the screening plate, and side plates are arranged at the front end and the rear end of the closing cover. Wrinkled cloth is arranged between the screening groove and the bottom frame. By means of the material screening frame which is closed in the using process, dust is intercepted and sucked through the air pipe, ore is returned to be sintered, and pollution to an annular shape is reduced.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to an under-trough screening device for ore. Background Technology

[0002] Return ore refers to the process of reducing the rate of ore returned from the blast furnace trough during blast furnace smelting. The main purpose of this reduction is to improve the production efficiency and economic benefits of the blast furnace, as the returned ore does not need to undergo the sintering process, thus reducing the use of sintering fuel. Directly feeding the returned ore into the furnace can avoid the re-burning of the returned ore in the sintering system, reduce energy consumption, release sintering capacity, and alleviate the pressure on sintering production.

[0003] Due to the decomposition and reduction of ore, some fine mineral powder is produced. Because of its small particle size, this mineral powder cannot be directly fed into the blast furnace and needs to be screened. The powder and small-particle ore produced by the raw material screening will be sent back to sintering for secondary processing via a return powder conveyor belt. The return powder transportation process also generates smoke and dust, which has a significant impact on environmental control and cost control. To address this issue, we propose an under-trough screening device for ore to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an under-trough screening device for ore.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a trough screening device for ore, comprising a screening trough, a bottom frame, an air duct, a screen plate, a support plate, and a vibrating motor. The screen plate is installed on the inner wall of the lower end of the screening trough. The screening trough is located at the opening at the upper end of the bottom frame. An air duct is installed through the bottom frame and one side of the screening trough. A fan is embedded inside one end of the air duct. A top cover is provided at the upper end of the screening trough. A push plate is provided inside the screening trough. A hydraulic rod connected to the push plate and slidably installed inside the screening trough is provided at one end of the screening trough. A closing cover is provided at the opening of the screening trough. A top cover is provided at the upper end of the screening trough. A vibrating motor is provided at the lower end of the screen plate. A support plate is provided inside the bottom frame. A spring is provided between the support plate and the screen plate. Side plates are provided at both the front and rear ends of the closing cover. A pleated cloth is provided between the screening trough and the bottom frame.

[0006] When using the under-trough screening device for one type of ore in this solution, the vibrating motor operates to generate a swinging force, which acts on the screen plate and then on the spring, thereby causing the screen plate and the screening trough to shake. During this process, the closed cover closes one end of the screening trough, and the top cover closes the upper end of the screening trough. The gap between the screening trough and the upper opening of the bottom frame is blocked by the pleated cloth to intercept the dust. The dust generated is intercepted in the screening trough. Small-sized ore and dust pass through the screen plate and enter the bottom frame. At the same time, the fan operates, and the suction force acts on the screening frame to draw the dust inside the screening trough into the bottom frame for collection.

[0007] After the ore is screened, the hydraulic rod operates, driving the pusher plate to push the ore. The connecting plate applies pressure to the closing cover. When the side plate passes the support roller, it is intercepted by the support roller. Because the mounting shaft rotates inside the bearing bracket, when the closing cover is squeezed, the force acts on the torsion spring, causing the torsion spring to twist, thereby opening the closing cover and the screen trough opening, allowing the ore to be effectively output. When the closing cover resets and the obstruction force applied by the support roller ends, the torsion spring stops bearing force. Through its own elasticity, the bearing bracket rotates on the outer wall of the mounting shaft and engages at the opening of the screen trough, closing one end of the screen trough opening.

[0008] Preferably, the blower suction end is located inside the duct, and the blower suction end is equipped with a filter screen. An opening and closing door is rotatably installed at the front end of the bottom frame. The blower suction force acts directly on the screening trough through the duct. The filter screen intercepts the suctioned dust, preventing dust from entering the blower. The opening and closing door cleans the small-sized ore and dust collected inside the bottom frame.

[0009] Preferably, a tilting motor is provided at the rear side of the screening trough, and symmetrically distributed bearing supports are provided at the rear end of the screening trough. The output end of the tilting motor is provided with a rotating shaft rotatably installed inside the bearing supports. When the tilting motor operates, it drives the bearing to rotate inside the bearing supports, thus providing rotational support for the bearing supports.

[0010] Preferably, the rear end of the top cover is provided with a connecting block that connects to the rotating shaft. When the flip motor operates, the drive bearing rotates inside the bearing bracket two, which in turn drives the connecting block to rotate, thus causing the top cover to rotate.

[0011] Preferably, the upper end of the support plate is provided with symmetrically distributed conical plates whose center height gradually decreases towards both sides. The conical plates guide small-sized ore and dust falling through the screening trough to both sides.

[0012] Preferably, a sliding sleeve is embedded inside the support plate, and a guide rod is slidably inserted into the sliding sleeve at the lower end of the screen plate. When the spring extends or retracts, the guide rod slides inside the sliding sleeve, guiding the spring longitudinally and limiting its movement to prevent it from deviating.

[0013] Preferably, a connecting plate is provided at one end of the push plate, and symmetrically distributed bearing supports are provided on the inner wall of the closed cover. Each end of the connecting plate is provided with a mounting shaft rotatably mounted inside the bearing support. A torsion spring is sleeved on the outer wall of the mounting shaft, with its two ends respectively connected to the closed cover and the connecting plate. The connecting plate rotates inside the bearing support via the mounting shaft. During rotation, because one end of the bearing support is connected to one end of the torsion spring, a torsional force is applied to the torsion spring.

[0014] Preferably, bearing seats are embedded in the front and rear ends of the bottom frame, and insert shafts are rotatably mounted inside the bearing seats. A support roller is provided at one end of the insert shaft. The insert shaft rotates inside the bearing seats, thereby providing rotational support to the support roller through the insert shaft. When the side plate is squeezed by the support roller, the friction of the outer wall of the side plate is reduced.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a screening trough that is elastically installed on the upper part of the support plate. When the vibrating motor is running, it drives the spring to shake, and the raw material shakes on the screen plate. Small-sized raw materials inside the screening trough are collected inside the bottom frame through the screen plate, and the dust generated during screening is sucked into the bottom frame through the air duct, which avoids the dust from being scattered to the outside during screening and thus polluting the environment, and the problem of dust being inhaled by workers and causing harm to their health. The ore is sent back to sintering for secondary processing via a return conveyor belt, which is more environmentally friendly. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0019] Figure 3 This is a first-angle three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention from a second angle, shown in a main sectional view.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the support roller of this utility model.

[0022] Reference numerals in the attached diagram: 1. Screening trough; 2. Base frame; 3. Air duct; 4. Fan; 5. Opening / closing door; 6. Pleated fabric; 7. Top cover; 8. Closing cover; 9. Side plate; 10. Tilting motor; 11. Connecting block; 12. Rotating shaft; 13. Push plate; 14. Connecting plate; 15. Support plate; 16. Vibrating motor; 17. Conical plate; 18. Guide rod; 19. Sliding sleeve; 20. Spring; 21. Screen plate; 22. Support roller; 23. Bearing seat; 24. Insert shaft; 25. Bearing bracket one; 26. Torsion spring; 27. Mounting shaft; 28. Hydraulic rod; 29. ​​Bearing bracket two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-5 As shown, the present invention proposes an under-trough screening device for ore, including a screening trough 1, a bottom frame 2, an air duct 3, a screen plate 21, a support plate 15, and a vibrating motor 16. The screen plate 21 is provided on the lower inner wall of the screening trough 1. The screening trough 1 is located at the upper opening of the bottom frame 2. The air duct 3 is installed through the bottom frame 2 and one side of the screening trough 1. A blower 4 is embedded in one end of the air duct 3. A top cover 7 is provided on the upper end of the screening trough 1. The vibrating motor 16 is provided on the lower end of the screen plate 21. The support plate 15 is provided inside the bottom frame 2. A spring 20 is provided between the support plate 15 and the screen plate 21. Side plates 9 are provided at both the front and rear ends of the closed cover 8. A pleated cloth 6 is provided between the screening trough 1 and the bottom frame 2.

[0025] The suction end of the fan 4 is located inside the air duct 3. The suction end of the fan 4 is equipped with a filter screen, and the front end of the bottom frame 2 is rotatably installed with an opening and closing door 5.

[0026] A tilting motor 10 is provided on the rear side of the screening trough 1, and a symmetrically distributed bearing bracket 29 is provided at the rear end of the screening trough 1. A rotating shaft 12 is provided at the output end of the tilting motor 10 and is rotatably installed inside the bearing bracket 29.

[0027] The rear end of the top cover 7 is provided with a connecting block 11 that is connected to the rotating shaft 12.

[0028] The upper end of the support plate 15 is provided with symmetrically distributed cone plates 17, whose center height gradually decreases to both sides.

[0029] A sliding sleeve 19 is embedded inside the support plate 15, and a guide rod 18 is provided at the lower end of the sieve plate 21, which is slidably inserted into the sliding sleeve 19.

[0030] Based on the implementation steps of Example 1: The vibrating motor 16 acts on the screen plate 21 and the screening trough 1 through oscillation force, while the fan 4 uses suction to collect dust into the bottom frame 2. The dust is intercepted and collected by the pleated cloth 6, reducing dust pollution to the environment. This effectively separates small-sized ore and dust from the screening trough 1 through the screen plate 21 and returns it to the furnace for production. This avoids the problem of dust generated during raw material screening and the generation of smoke during the secondary processing of small-sized ore in sintering, which would have a significant impact on environmental control and cost control. The production environment and workers are effectively protected.

[0031] like Figures 1-5 As shown, the ore screening device proposed in this utility model, compared with the first embodiment, further includes: a push plate 13 is provided inside the screening trough 1, a hydraulic rod 28 is provided at one end of the screening trough 1 and is connected to the push plate 13 and has its telescopic end slidably installed inside the screening trough 1, and a closing cover 8 is provided at the opening of the screening trough 1.

[0032] A connecting plate 14 is provided at one end of the push plate 13, and a symmetrically distributed bearing bracket 25 is provided on the inner wall of the closed cover 8. Both ends of the connecting plate 14 are provided with mounting shafts 27 that are rotatably installed inside the bearing brackets 25. A torsion spring 26 is sleeved on the outer wall of the mounting shaft 27, with both ends connected to the closed cover 8 and the connecting plate 14 respectively.

[0033] Bearing seats 23 are embedded in the front and rear ends of the bottom frame 2. A shaft 24 is rotatably installed inside the bearing seat 23. A support roller 22 is provided at one end of the shaft 24.

[0034] In this embodiment, it is worth noting that the hydraulic rod 28 in the figure is a partial effect. The hydraulic rod 28 is set with the length of the telescopic end and the cylinder as needed. The hydraulic rod 28 and the push plate 13 are used to drive the ore output. The closed cover 8 is simple and easy to operate. It ensures the closure of one end of the screening trough 1 during screening. The screening trough 1 opens and closes flexibly and smoothly, which improves the stability and production efficiency of the equipment. Moreover, the opening and closing structure adopts a mechanical structure, which has low maintenance costs.

[0035] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A trough screening device for ore, comprising a screening trough (1), a bottom frame (2), an air duct (3), a screen plate (21), a support plate (15), and a vibrating motor (16), characterized in that: The lower inner wall of the screening trough (1) is provided with a screen plate (21). The screening trough (1) is located at the upper opening of the bottom frame (2). A duct (3) is installed through the bottom frame (2) and one side of the screening trough (1). A fan (4) is embedded in one end of the duct (3). A top cover (7) is provided at the upper end of the screening trough (1). A push plate (13) is provided inside the screening trough (1). One end of the screening trough (1) is provided with a sliding end that is connected to the push plate (13) and is slidably installed in the screening trough (1). The internal hydraulic rod (28) is provided with a closing cover (8) at the opening of the screening trough (1), a top cover (7) is provided at the upper end of the screening trough (1), a vibration motor (16) is provided at the lower end of the screen plate (21), a support plate (15) is provided inside the bottom frame (2), a spring (20) is provided between the support plate (15) and the screen plate (21), side plates (9) are provided at both the front and rear ends of the closing cover (8), and a pleated cloth (6) is provided between the screening trough (1) and the bottom frame (2).

2. The under-trough screening device for ore according to claim 1, characterized in that: The suction end of the fan (4) is located inside the air duct (3), and the suction end of the fan (4) is equipped with a filter screen. The front end of the bottom frame (2) is rotatably installed with an opening and closing door (5).

3. The under-trough screening device for ore according to claim 1, characterized in that: A tilting motor (10) is provided on the rear side of the screening trough (1), and a symmetrically distributed bearing bracket (29) is provided at the rear end of the screening trough (1). A rotating shaft (12) is provided at the output end of the tilting motor (10) and is rotatably installed inside the bearing bracket (29).

4. The under-trough screening device for ore according to claim 3, characterized in that: The rear end of the top cover (7) is provided with a connecting block (11) that is connected to the rotating shaft (12).

5. The under-trough screening device for ore according to claim 1, characterized in that: The upper end of the support plate (15) is provided with symmetrically distributed cone plates (17) whose center height gradually decreases to both sides.

6. The under-trough screening device for ore according to claim 1, characterized in that: The support plate (15) is fitted with a sliding sleeve (19), and the lower end of the sieve plate (21) is provided with a guide rod (18) that is slidably inserted into the sliding sleeve (19).

7. The under-trough screening device for ore according to claim 1, characterized in that: A connecting plate (14) is provided at one end of the push plate (13). A bearing bracket (25) is provided on the inner wall of the closed cover (8). A mounting shaft (27) is provided at both ends of the connecting plate (14) and is rotatably installed inside the bearing bracket (25). A torsion spring (26) is sleeved on the outer wall of the mounting shaft (27) and its two ends are respectively connected to the closed cover (8) and the connecting plate (14).

8. The under-trough screening device for ore according to claim 1, characterized in that: The bottom frame (2) has bearing seats (23) embedded in both the front and rear ends. A shaft (24) is rotatably installed inside the bearing seat (23), and a support roller (22) is provided at one end of the shaft (24).

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