Drying and screening device for superfine slag powder processing

Abstract

The utility model discloses a drying and screening device for superfine slag powder processing, which comprises a blanking hopper, a support and a screening component, the screening component comprises an outer cylinder, a cylinder cover, a turntable and a rotary frustum, the cylinder cover is mounted at the upper end of the outer cylinder through a flange component, the rotary frustum is rotatably mounted on the support, the turntable is rotatably mounted at the upper part in the outer cylinder, and the rotary frustum is rotatably mounted on the support. A plurality of layers of screen drums are installed between the rotary disc and the rotary frustum from inside to outside at equal intervals, the diameters of screen holes in the screen drums are reduced from inside to outside, discharging openings are formed in the portions, on the inner sides of the screen drums, of the rotary frustum and the portion, between the outer drum body and the outermost layer of screen drum, of the support, and a driving mechanism in transmission connection with the rotary frustum is arranged on the support. And the blanking hopper is arranged on the cylinder cover above the innermost layer of screen cylinder, and a blanking control mechanism is arranged in the blanking hopper. According to the device, noise pollution can be effectively reduced, the screening efficiency is improved, the screening effect of the superfine slag powder can be improved, and the phenomenon of blocking of the superfine slag powder cannot be caused.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solid waste resource processing technology field, concretely relates to a kind of drying screening device for slag micro powder processing. BACKGROUND

[0002] Slag micro powder is mainly the waste slag generated when steel plant smelts pig iron after drying and grinding, and the main role of slag micro powder is to replace cement in the proportion of 20% to 70%, to prepare concrete in the form of mineral admixture, which greatly improves the mechanical properties of cement concrete, which not only improves construction engineering, but also reduces the production cost of concrete for the construction industry, and slag micro powder has low cost and high efficiency, which can bring considerable economic benefits to customers. At present, the production of slag micro powder mainly includes pre-treatment, drying and grinding treatment. In order to avoid the phenomenon of over-grinding of slag micro powder with particle size meeting the requirements, the slag micro powder needs to be screened after drying. In the existing technology, the screening of slag micro powder is mainly carried out by using a vibrating screen. However, the vibrating screen has the following disadvantages in use: first, the noise generated by the vibrating screen is large, which affects people's physical and mental health; second, the discharging is uneven, which can cause the vibrating screen to be blocked when the material falls from the hopper into the vibrating screen, and the staff needs to clean it before re-screening, which affects the production efficiency. Therefore, it is an objective need to develop a drying and screening device for slag micro powder processing with small noise, easy to control the amount of discharging and significantly improve the screening efficiency. SUMMARY

[0003] The utility model aims at providing a kind of drying and screening device for slag micro powder processing with small noise, easy to control the amount of discharging and significantly improve the screening efficiency.

[0004] The utility model is realized as follows: a discharging hopper, a support and a screening assembly are included. The screening assembly includes an outer cylinder, a cylinder cover, a rotating disc and a rotating cone. The lower end of the outer cylinder is fixedly installed on the support. The cylinder cover is detachably installed on the upper end of the outer cylinder through a flange assembly. The rotating cone is rotatably installed on the support. The rotating disc is rotatably installed on the upper part of the outer cylinder. A plurality of layers of screen cylinders are installed at equal intervals between the rotating disc and the rotating cone from the inside to the outside. The diameters of the screen holes on the plurality of layers of screen cylinders gradually decrease from the inside to the outside. A discharge port is arranged on the rotating cone inside the plurality of layers of screen cylinders and on the support between the outer cylinder and the outermost screen cylinder. A driving mechanism is arranged on the support and connected with the rotating cone. The discharging hopper is arranged on the cylinder cover above the innermost screen cylinder. A discharging control mechanism is arranged in the discharging hopper.

[0005] Compared with the prior art, the device has the advantages that: first, the device uses a rotary multi-layer screen cylinder to replace the structure of a vibrating screen, the screen cylinder is installed in a relatively sealed outer cylinder, and the multi-layer screen cylinder is driven to rotate by a rotating disc, a rotating cone and a driving mechanism to realize screening of the slag powder, the arrangement of the structure can effectively reduce noise pollution and improve the working environment of the workshop, and the screen cylinder can perform step-by-step screening of the slag powder by relying on the centrifugal force, the screening mode will not cause the screen cylinder to be blocked, and the screening efficiency is very high; second, the structure of the lower hopper is optimized, the lower hopper is provided with a lower control mechanism, the lower control mechanism can adjust the discharging amount of the slag powder, control the speed and discharging amount of the slag powder entering the screen cylinder, and make the slag powder enter the screen cylinder at a uniform speed, which is beneficial to improving the screening effect of the slag powder and preventing the slag powder from being blocked, and the device has the advantages of reasonable structure, low noise, high screening efficiency and easy popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a front view of the device of the present application;

[0007] Figure 2 is Figure 1 is an enlarged view of part A in the figure;

[0008] In the figure: 1-lower hopper, 101-material control plate, 102-sliding block, 103-adjusting screw, 104-positioning seat, 105-adjusting handle, 106-guide plate, 107-limiting plate, 108-guide block, 2-stand, 3-outer cylinder, 4-cylinder cover, 5-rotating disc, 6-rotating cone, 7-screen cylinder, 8-discharge port, 9-bearing ring plate, 10-flange, 11-servo motor, 12-transmission screw, 13-baffle plate, 14-orthogonal baffle cone, 15-inverted baffle cone, 16-driving motor, 17-transmission shaft, 18-driving bevel gear, 19-driven bevel gear, 20-observation window. DETAILED DESCRIPTION

[0009] The present application will be further described below with reference to the drawings, but the present application is not limited in any way by the drawings, and any changes or improvements made based on the teachings of the present application are within the scope of the present application.

[0010] For example, Figures 1-2The utility model discloses a kind of multi-layer screen cylinder structures, including feeder hopper 1, support 2 and screening assembly, the screening assembly includes outer cylinder 3, cylinder cover 4, rotating disc 5 and rotating cone 6, the lower end of outer cylinder 3 is fixedly installed on support 2, cylinder cover 4 is detachably installed on the upper end of outer cylinder 3 by flange assembly, rotating cone 6 is rotatably installed on support 2, rotating disc 5 is rotatably installed in the upper portion of outer cylinder 3, multiple layers of screen cylinder 7 are installed with equal intervals from inside to outside between rotating disc 5 and rotating cone 6, the screen hole diameter on multiple layers of screen cylinder 7 gradually decreases from inside to outside, discharge port 8 is provided on rotating cone 6 inside multiple layers of screen cylinder 7 and support 2 between outer cylinder 3 and outermost screen cylinder 7, drive mechanism is provided on support 2 and is in transmission connection with rotating cone 6, feeder hopper 1 is provided on cylinder cover 4 above innermost screen cylinder 7, and feeder control mechanism is provided in feeder hopper 1.

[0011] The working process of the device is: first, drive rotating cone 6, rotating disc 5 and multiple layers of screen cylinder 7 to rotate by drive mechanism, then add slag powder into feeder hopper 1, after the control of feeder control mechanism, the slag powder entering feeder hopper 1 can enter innermost screen cylinder 7 at a uniform speed, due to the action of centrifugal force, the slag powder with the largest particle size will stay in slag powder after screening by innermost screen cylinder 7, and is discharged through discharge port 8, and the slag powder with relatively smaller particle size is thrown out and enters next screen cylinder 7, and is screened according to the above screening mode until the slag powder with the smallest particle size after complete screening enters outer cylinder 3 and is discharged from discharge port 8, the structure of multiple layers of screen cylinder 7 is used to screen slag powder, which can effectively reduce noise pollution and improve the working environment of workshop, and the slag powder is gradually screened by screen cylinder relying on the action of centrifugal force, which will not cause screen cylinder to be blocked, has very high screening efficiency, and the feeder control mechanism provided in feeder hopper 1 can adjust the feeding amount of slag powder, control the speed and feeding amount of slag powder entering screen cylinder 7, so that the slag powder can enter screen cylinder at a uniform speed, which is beneficial to improve the screening effect of slag powder and will not cause slag powder to be blocked.

[0012] Further, in order to facilitate the replacement of the screen cylinder 7, the upper part of the outer cylinder 3 is fixedly installed with a load-bearing ring plate 9, the rotating disc 5 is rotatably installed on the load-bearing ring plate 9 through a bearing assembly, the rotating disc 5 is processed with an annular insertion slot matched with the multi-layer screen cylinder 7, the rotating cone 6 is processed with an annular groove matched with the multi-layer screen cylinder 7, the lower end of the multi-layer screen cylinder 7 is movably inserted into the annular groove, and the upper end of the multi-layer screen cylinder 7 is arranged through the annular insertion slot. When the screen cylinder 7 needs to be replaced, the cylinder cover 4 is removed from the upper end of the outer cylinder 3, and then the screen cylinder 7 is taken out from the corresponding annular groove and annular insertion slot for replacement. In order to make the replacement of the screen cylinder 7 more labor-saving and time-saving, flanges 10 are respectively installed on the outer side of the upper end of the multi-layer screen cylinder 7, threaded holes are uniformly processed on the flanges 10, servo motors 11 matched with the threaded holes are uniformly installed on the rotating disc 5 below the flanges 10, drive screws 12 are installed on the output shafts of the servo motors 11, and the drive screws 12 are screw-connected in the threaded holes on the flanges 10. When the screen cylinder 7 needs to be replaced, the servo motor 11 is started, the servo motor 11 drives the drive screw 12 to rotate, and the flange 10 rotates along the drive screw 12, so that the screen cylinder 7 can be pushed out upward, facilitating people to quickly take out the screen cylinder 7 from the rotating cone 6 and the rotating disc 5 for replacement.

[0013] Further, in order to slow down the falling speed of the slag powder into the innermost screen cylinder, a plurality of baffles 13 are installed in the innermost screen cylinder 7 in an upper and lower staggered manner. The plurality of baffles 13 are arranged in the innermost screen cylinder 7 in an inclined downward manner. The arrangement of the baffles 13 can slow down the falling speed of the slag powder and improve the screening effect of the slag powder.

[0014] Similarly, a plurality of positive baffling cones 14 and inverted baffling cones 15 are installed in an upper and lower staggered manner between the adjacent two layers of screen cylinders 7. The lower end of the positive baffling cone 14 is fixedly connected with the inner screen cylinder 7, and the large end and the outer screen cylinder 7 are left with a gap. The large end of the inverted baffling cone 15 is fixedly connected with the outer screen cylinder 7, and the small end and the inner screen cylinder 7 are left with a gap. The positive baffling cone 14 and the inverted baffling cone 15 can slow down the falling speed of the slag powder and realize efficient screening of the slag powder.

[0015] Further, in order to ensure the stable rotation of the rotating conical table, the rotating disc and the multi-layer sieve cylinder, the driving mechanism comprises a driving motor 16, a transmission shaft 17, a driving bevel gear 18 and a driven bevel gear 19. The driving motor 16 is a prior art, which can be directly purchased according to the size of the power used. The transmission shaft 17 is installed at the bottom center of the rotating conical table 6. The driving motor 16 is installed on the support 2. The driving bevel gear 18 is installed on the output shaft of the driving motor 16. The driven bevel gear 19 is installed on the transmission shaft 17 and is in meshing with the driving bevel gear 18. In use, the driving motor 16 is started to drive the driving bevel gear 18 to rotate. The driving bevel gear 18 drives the driven bevel gear 19 to rotate in the process of rotating, thereby driving the transmission shaft 17, the rotating conical table 6, the rotating disc 5 and the sieve cylinder 7 to rotate synchronously.

[0016] Further, the discharging control mechanism comprises a control plate 101, a sliding block 102 and an adjusting screw 103. A positioning seat 104 is installed on one side in the discharging hopper 1. One end of the control plate 101 is rotatably installed on the positioning seat 104. A gap is left between the other end of the control plate 101 and the discharging hopper 1. The adjusting screw 103 is rotatably installed on the discharging hopper 1 below the control plate 101. The sliding block 102 is threadedly connected on the adjusting screw 103. The sliding block 102 and the control plate 101 are connected through a connecting rod. An adjusting handle 105 is installed on the end of the adjusting screw 103 outside the discharging hopper 1. When it is needed to adjust the discharging amount, the adjusting handle 105 is rotated to drive the adjusting screw 103 to rotate. The adjusting screw 103 drives the sliding block 102 to rotate along the adjusting screw 103 in the process of rotating, thereby adjusting the inclination of the control plate 101. The inclination of the control plate 101 is increased, the gap between the control plate 101 and the discharging hopper 1 is increased, the inclination of the control plate 101 is decreased, and the gap between the control plate 101 and the discharging hopper 1 is increased. The adjustment of the discharging amount can be controlled by increasing or decreasing the gap. Preferably, in order to ensure the smooth movement of the sliding block 102 on the adjusting screw 103, a guide plate 106 is installed in the discharging hopper 1 below the adjusting screw 103. The end of the guide plate 106 is vertically installed with a limiting plate 107. The end of the adjusting screw 103 is rotatably installed on the limiting plate 107. A downwardly recessed guide sliding groove is processed on the top surface of the guide plate 106. A guide block 108 is slidably installed in the guide sliding groove. The guide block 108 is fixedly connected with the sliding block 102. The sliding block 102 drives the guide block 108 to slide in the guide sliding groove in the process of sliding. The guide plate 106 has a guiding effect, which can make the sliding block 102 always move along the adjusting screw 103 without deviation.

[0017] In order to facilitate the observation of the working state of the sieve cylinder 7 in the outer cylinder 3, a transparent observation window 20 is installed on the outer cylinder 3.

Claims

1. A drying and screening device for processing of slag fines, comprising a feed hopper (1), a support (2) and a screening assembly, characterized in that: The screening assembly comprises an outer cylinder (3), a cylinder cover (4), a rotating disc (5) and a rotating cone (6), the lower end of the outer cylinder (3) is fixedly installed on the support (2), the cylinder cover (4) is detachably installed on the upper end of the outer cylinder (3) through a flange assembly, the rotating cone (6) is rotatably installed on the support (2), the rotating disc (5) is rotatably installed on the upper part in the outer cylinder (3), a plurality of layers of screen cylinders (7) are installed at equal intervals from inside to outside between the rotating disc (5) and the rotating cone (6), the diameters of screen holes on the plurality of layers of screen cylinders (7) gradually decrease from inside to outside, a discharge port (8) is arranged on the rotating cone (6) inside the plurality of layers of screen cylinders (7) and the support (2) between the outer cylinder (3) and the outermost layer of screen cylinders (7), a driving mechanism is arranged on the support (2) and is in transmission connection with the rotating cone (6), the lower hopper (1) is arranged on the cylinder cover (4) above the innermost layer of screen cylinders (7), and a discharging control mechanism is arranged in the lower hopper (1).

2. The drying and screening device for processing of slag fines according to claim 1, characterized in that: A load-bearing ring plate (9) is fixedly installed on the upper part in the outer cylinder (3), the rotating disc (5) is rotatably installed on the load-bearing ring plate (9) through a bearing assembly, a ring-shaped insertion slot matched with the plurality of layers of screen cylinders (7) is formed through the rotating disc (5), a ring-shaped groove matched with the plurality of layers of screen cylinders (7) is formed on the rotating cone (6), the lower end of the plurality of layers of screen cylinders (7) is movably inserted into the ring-shaped groove, and the upper end of the plurality of layers of screen cylinders (7) is arranged through the ring-shaped insertion slot.

3. The drying and screening device for processing of slag fines according to claim 2, characterized in that: Flanges (10) are respectively installed on the upper end outside of the plurality of layers of screen cylinders (7), threaded holes are uniformly formed on the flanges (10), servo motors (11) matched with the threaded holes are uniformly installed on the rotating disc (5) below the flanges (10), transmission screw rods (12) are installed on output shafts of the servo motors (11), and the transmission screw rods (12) are screw-connected into the threaded holes on the flanges (10).

4. The drying and screening device for processing of slag fines according to claim 1, characterized in that: A plurality of baffles (13) are installed in an up-and-down staggered manner in the inner part of the innermost layer of screen cylinders (7), and the plurality of baffles (13) are arranged in an inclined downward manner in the innermost layer of screen cylinders (7).

5. The drying and screening device for processing of slag fines according to claim 1, characterized in that: A plurality of groups of positive baffling cone bodies (14) and reverse baffling cone bodies (15) are installed in an up-and-down staggered manner between adjacent two layers of screen cylinders (7), the lower end of the positive baffling cone body (14) is fixedly connected with the inner layer of screen cylinders (7), a gap is left between the large end of the positive baffling cone body (14) and the outer layer of screen cylinders (7), the large end of the reverse baffling cone body (15) is fixedly connected with the outer layer of screen cylinders (7), and a gap is left between the small end of the reverse baffling cone body (15) and the inner layer of screen cylinders (7).

6. The drying and screening device for processing of slag fines according to claim 1, characterized in that: The driving mechanism comprises a driving motor (16), a transmission shaft (17), a driving bevel gear (18) and a driven bevel gear (19), the transmission shaft (17) is installed at the bottom center of the rotating cone (6), the driving motor (16) is installed on the support (2), the driving bevel gear (18) is installed on the output shaft of the driving motor (16), and the driven bevel gear (19) is installed on the transmission shaft (17) and is in meshing connection with the driving bevel gear (18).

7. The drying and screening device for processing of slag fines according to claim 1, characterized in that: The blanking control mechanism comprises a material control plate (101), a sliding block (102) and an adjusting screw rod (103), one side of the blanking hopper (1) is provided with a positioning seat (104), one end of the material control plate (101) is rotatably installed on the positioning seat (104), a gap is left between the other end of the material control plate (101) and the blanking hopper (1), the adjusting screw rod (103) is rotatably installed on the blanking hopper (1) below the material control plate (101), the sliding block (102) is threadedly connected on the adjusting screw rod (103), the sliding block (102) and the material control plate (101) are connected through a connecting rod, and an adjusting handle (105) is installed on the end of the adjusting screw rod (103) outside the blanking hopper (1).

8. The drying and screening device for processing of slag fines according to claim 7, characterized in that: A guide plate (106) is installed in the blanking hopper (1) below the adjusting screw rod (103), the end of the guide plate (106) is vertically provided with a limiting plate (107), the end of the adjusting screw rod (103) is rotatably installed on the limiting plate (107), a downward recessed guide sliding groove is formed on the top surface of the guide plate (106), a guide block (108) is slidably installed in the guide sliding groove, and the guide block (108) is fixedly connected with the sliding block (102).

9. The drying and screening device for processing of slag fines according to claim 1, characterized in that: A transparent observation window (20) is installed on the outer cylinder body (3).

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