Rapid ferro-molybdenum screening device

By designing a double-layer drum screen and automatic packaging system in the ferromolybdenum crushing system, the existing ferromolybdenum crushing system has been solved, efficient screening and automated packaging have been achieved, and small-particle ferromolybdenum output and safety hazards have been reduced.

CN222805522UActive Publication Date: 2025-04-29JINDUICHENG MOLYBDENUM CO LTD
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Patent Information

Application Number
CN202421453106.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-24
Publication Date
2025-04-29
Estimated Expiration
2034-06-24

AI Technical Summary

Technical Problem

The existing iron molybdenum crushing system has low working efficiency and high labor costs, large manual operation volume, backward intelligence, resulting in cumbersome screening steps, large equipment system differences, large material drop potential energy, and high output rate of small-particle iron molybdenum, which poses safety hazards.

Method used

A rapid screening device for ferromolybdenum is designed, driven by a double-layer drum screen and external motor. The screen hole gradually increases in the direction of material flow. The unqualified material is adjusted to return and crushed through the flip valve. The qualified material of particle size is transferred to the storage silo and automatically packaged.

Benefits of technology

The double screening through the double-layer drum screen reduces the screening step, reduces the output of small-particle iron molybdenum during the crushing and screening process, improves work efficiency, reduces labor costs, and reduces equipment damage and safety hazards.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a ferro-molybdenum rapid screening device which comprises a support, a double-layer drum screen is arranged on the support, an acute angle is formed between the double-layer drum screen and the ground, and the double-layer drum screen is driven by an external motor. Sieve holes are formed in the inner layer and the outer layer of the double-layer drum sieve; materials crushed by the jaw crusher are conveyed to the double-layer drum screen through the first conveying belt to be screened, the flap valve is adjusted, the materials with unqualified particle sizes are returned to the jaw crusher to be crushed again, and the materials enter the conveying belt again to enter the double-layer drum screen to be screened. Granular qualified products are screened and conveyed to the next layer of conveying belt conveyor to be conveyed into the storage bin, materials discharged from the storage bin enter the automatic packaging system through the conveying belt to be packaged into finished products, due to the arrangement of the double-layer drum screen, the screening steps are reduced through double screening, the output of foamed iron in the crushing and screening process is effectively reduced, and the production efficiency is improved. The technical problems that in the prior art, a ferromolybdenum crushing system is low in working efficiency and high in labor cost are solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of material separation and relates to a screening device, in particular to a molybdenum-iron rapid screening device. Background Art

[0002] In the ferromolybdenum crushing system, ferromolybdenum particle size screening is a key link. At present, the ferromolybdenum crushing and screening system has a large amount of manual operation and backward intelligence; the screening steps of the entire crushing and screening system are cumbersome, the height difference of the equipment system is large, the material falling potential energy is large, and the output rate of small-sized ferromolybdenum is high. Ferromolybdenum blocks frequently impact the conveying chute, and the chute often needs to be repaired, which poses a major safety hazard. On-site equipment needs to be inspected by personnel every day, and the crushing process personnel need to monitor the equipment; during the packaging process, personnel are required to transport the crushed ferromolybdenum in the container bag, cut the bag, and re-pack the particle size, a total of 14 people, with low labor efficiency and high labor intensity. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a ferromolybdenum rapid screening device to solve the technical problems of low working efficiency and high labor cost of the ferromolybdenum crushing system in the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A ferromolybdenum rapid screening device comprises a bracket, a double-layer drum screen is arranged on the bracket, the double-layer drum screen forms an acute angle with the ground and is driven by an external motor; the inner layer and the outer layer of the double-layer drum screen are both provided with screen holes; and a first conveying belt is further provided, one end of the first conveying belt extends into the inner layer of one end of the double-layer drum screen away from the ground through a first chute;

[0006] A first discharge port, a second discharge port and a third discharge port are sequentially provided on the bottom wall of the double-layer drum screen in the opposite direction of the material flow direction, a flap valve is provided at the bottom of the first discharge port, a second conveying belt is provided just below one end of the flap valve, a third conveying belt is provided just below the second end of the flap valve, a third chute and a fourth chute are provided at the bottom of the second discharge port and the third discharge port, and the ends of the third chute and the fourth chute are located just above the third conveying belt;

[0007] A horizontally movable reversible belt is provided at the end of the third conveying belt, a second chute is provided at the end of the third conveying belt, and the end of the second chute is located above the reversible belt;

[0008] A plurality of storage bins are arranged at the bottom of the horizontally movable reversible belt, a bin conveying belt is arranged below the storage bins, and an automatic packaging system is arranged at the end of the bin conveying belt.

[0009] The utility model also includes the following technical features:

[0010] The acute angle between the double-layer drum screen and the ground is 5°.

[0011] The sieve holes gradually increase in size along the material flow direction.

[0012] The apertures of the first feeding opening, the second feeding opening and the third feeding opening gradually decrease.

[0013] The inner walls of the first chute, the second chute, the third chute and the fourth chute are all provided with a wear-resistant layer.

[0014] The material outlet of the automatic packaging system adopts a double-layer design.

[0015] It also includes a feeding system operation control box and a silo weighing instrument box. The feeding system operation control box is electrically connected to the third conveyor belt, the third conveyor belt, the third conveyor belt, the reversible belt and the external motor, and the silo weighing instrument box is electrically connected to the automatic packaging system.

[0016] A wear-resistant layer is arranged inside the storage bin.

[0017] There are four storage bins, and the storage capacity of the storage bins is 20T.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] In the utility model, the material crushed by the jaw crusher is conveyed to the double-layer drum screen through a conveyor belt for screening, the flap valve is adjusted, and the material with unqualified particle size is returned to the jaw crusher for re-crushing, and then enters the conveyor belt again to enter the double-layer drum screen for screening, and the qualified products are screened and transmitted to the next layer of conveyor belt machine for transportation to the storage bin. The material discharged from the bin enters the automatic packaging system through the conveyor belt for finished product packaging. The setting of the double-layer drum screen and the double screening reduce the screening steps and also effectively reduce the output of foam iron in the crushing and screening process, thereby solving the technical problems of low working efficiency and high labor cost of the molybdenum iron crushing system in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a partial enlarged view of the double-layer drum screen in the utility model;

[0022] Figure 3 It is a side view schematic diagram of the double-layer drum screen of the utility model.

[0023] The meanings of the various numbers in the figure are: first conveyor belt 1, double-layer drum screen 2, third conveyor belt 3, reversible belt 4, storage silo 5, automatic packaging system 6, silo conveyor belt 7, second conveyor belt 8, flap valve 9, bracket 10, first chute 11, third chute 12, fourth chute 13, second chute 14, external motor 15.

[0024] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0025] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0026] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0027] The utility model provides a molybdenum iron rapid screening device, comprising a bracket 10, on which a double-layer drum screen 2 is arranged, the double-layer drum screen 2 forms an acute angle with the ground and is driven by an external motor 15; the inner layer and the outer layer of the double-layer drum screen 2 are both provided with sieve holes;

[0028] It also includes a first conveyor belt 1, one end of which extends through a first chute 11 into the inner layer of one end of a double-layer drum screen 2 away from the ground;

[0029] A first discharge port, a second discharge port and a third discharge port are sequentially provided on the bottom wall of the double-layer drum screen 2 in the opposite direction of the material flow direction. A flap valve 9 is provided at the bottom of the first discharge port. A second conveying belt 8 is provided just below one end of the flap valve 9. A third conveying belt 3 is provided just below the second end of the flap valve 9. A third chute 12 and a fourth chute 13 are provided at the bottom of the second discharge port and the third discharge port. The ends of the third chute 12 and the fourth chute 13 are located just above the third conveying belt 3.

[0030] A horizontally movable reversible belt 4 is provided at the end of the third conveying belt 3, and a second chute 14 is provided at the end of the third conveying belt 3, and the end of the second chute 14 is located above the reversible belt 4;

[0031] A plurality of storage bins 5 are arranged at the bottom of the horizontally movable reversible belt 4 , a bin conveying belt 7 is arranged below the storage bins 5 , and an automatic packaging system 6 is arranged at the end of the bin conveying belt 7 .

[0032] Preferably, the storage bin 5 is made of steel plate, which can well resist strong impact;

[0033] In the above technical scheme, the material crushed by the external jaw crusher is conveyed to the double-layer drum screen 2 through the first conveyor belt 1 and the first chute 11 for screening, and the flap valve 9 is adjusted so that the material with unqualified particle size reaches the second conveyor belt 8 through one end of the flap valve 9, returns to the jaw crusher for re-crushing, and then enters the second conveyor belt 1 again to enter the double-layer drum screen 2 for screening. The material with qualified particle size is transmitted to the next layer of the third conveyor belt 3 through the third chute 12 or the fourth chute 13, and is transported to the horizontally movable reversible belt 4 through the second chute 14, and then enters the storage bin 5. After the storage bin 5 is discharged, the material enters the automatic packaging system 6 through the bin conveyor belt 7 for finished product packaging.

[0034] The acute angle between the double-layer drum screen 2 and the ground is 5°.

[0035] The acute angle between the double-layer drum screen 2 and the ground can make the entire screening process more complete, and setting it to 5° can effectively avoid the problem that the small-particle material entering the double-layer drum screen 2 directly enters the large-aperture sieve holes due to gravity due to the angle being too large, thereby reducing some unnecessary repeated screening processes.

[0036] The sieve holes gradually increase in the direction of material flow.

[0037] In the above technical solution, the apertures of the sieve holes on the inner layer of the double-layer drum screen 2 are respectively larger than the apertures of the sieve holes on the outer layer of the double-layer drum screen 2;

[0038] Preferably, the diameters of the sieve holes of the inner layer of the double-layer drum screen 2 are 105 mm, 65 mm and 30 mm, respectively, and the diameters of the sieve holes of the outer layer of the double-layer drum screen 2 are 73 mm, 43 mm and 11 mm, respectively.

[0039] The length of the double-layer drum screen 2 is 7.033 meters, the inner layer is a 25mm thick steel plate with an inner diameter of 1.1 meters, and the outer layer is a 20mm steel plate with an outer diameter of 1.7 meters.

[0040] The apertures of the first feeding opening, the second feeding opening and the third feeding opening gradually decrease.

[0041] Preferably, the apertures of the first feed opening, the second feed opening and the third feed opening are respectively greater than 100 mm, 10 to 50 mm and 0 to 10 mm.

[0042] The inner walls of the first chute 11 , the second chute 14 , the third chute 12 and the fourth chute 13 are all provided with a wear-resistant layer.

[0043] In the above technical solution, the provision of a wear-resistant layer can effectively reduce the impact strength of the ferromolybdenum block on the chute, reduce the number of chute repair welding times, and eliminate safety hazards.

[0044] The discharge port of the automatic packaging system 6 adopts a double-layer design.

[0045] In the above technical solution, the discharge port adopts a double-layer design to protect the ton bag area where the material is dropped.

[0046] It also includes a feeding system operation control box and a silo weighing instrument box. The feeding system operation control box is electrically connected to the first conveyor belt 1, the second conveyor belt 8, the third conveyor belt 3, the reversible belt 4, the silo conveyor belt 7 and the external motor 15, and the silo weighing instrument box is electrically connected to the automatic packaging system 6.

[0047] In the above technical scheme, the external jaw crusher oil station system is turned on to check whether the oil supply pressure is normal; the jaw crusher is turned on; the feeding system operation control box (JX07) is operated, and the switch of the feeding system operation control box is manually adjusted to automatic, and the first conveyor belt 1, the second conveyor belt 8, the third conveyor belt 3, the silo conveyor belt 7, the double-layer drum screen 2, etc. are automatically turned on in sequence, and the signal indicator lights up normally, and the equipment body is checked to see whether it is turned on normally; the storage bin 5 is selected to check whether the reversible belt 4 unloading position is correct; when the storage bin 5 reaches a certain level, the silo weighing instrument box (JX06) is turned on to check whether the signal is in a normal state, and the automatic packaging system 6 control switch is adjusted to automatic, and the signal indicator lights up normally, and the material discharge and packaging are started normally.

[0048] The storage bin 5 is provided with a wear-resistant layer inside.

[0049] Preferably, a manganese 13 wear-resistant layer is used, and the service life of the storage bin is extended by providing the wear-resistant layer.

[0050] Four storage bins 5 are provided, and the storage capacity of the storage bins 5 is 20T.

[0051] Example:

[0052] From April to June 2023, Jinduicheng Smelting Branch Company transformed the original ferromolybdenum crushing production line according to the invention. According to the invention, the original crushing production line was dismantled and reconstructed, and civil construction work was carried out. The automatic packaging system, horizontally movable reversible belt and its electrical and dust collection systems were designed and installed, and the core spare parts such as double-layer drum screens, silos and some conveying equipment were updated. Currently, 1179 furnaces of ferromolybdenum are crushed on this production line, and the automatic packaging rate of ferromolybdenum has been increased to 30%, which effectively reduces the labor intensity of packaging personnel, reduces the use of crushing and packaging turnover bags, and reduces the production of small-sized ferromolybdenum during the crushing process. The rapid screening device packs 30 tons of products and sends them to the steel plant, which meets the steel plant's requirements for the particle size of ferromolybdenum. Customers feedback that the quality is good, and it has been officially put into production and use, achieving the purpose of intelligent crushing and packaging. The invention has now been officially applied to the Jinmo Co., Ltd. Smelting Branch.

Claims

1. A ferromolybdenum rapid screening device, comprising a support (10), characterized in that: The support (10) is provided with a double-layer drum screen (2), the double-layer drum screen (2) forms an acute angle with the ground and is driven by an external motor (15); the inner layer and the outer layer of the double-layer drum screen (2) are both provided with screen holes; and the support also includes a first conveying belt (1), one end of which extends through a first chute (11) into the inner layer of one end of the double-layer drum screen (2) away from the ground; A first discharge port, a second discharge port and a third discharge port are sequentially provided on the bottom wall of the double-layer drum screen (2) in the opposite direction of the material flow direction, a flap valve (9) is provided at the bottom of the first discharge port, a second conveying belt (8) is provided just below one end of the flap valve (9), a third conveying belt (3) is provided just below the second end of the flap valve (9), a third chute (12) and a fourth chute (13) are provided at the bottom of the second discharge port and the third discharge port, and the ends of the third chute (12) and the fourth chute (13) are located just above the third conveying belt (3); A horizontally movable reversible belt (4) is provided at the end of the third conveying belt (3), a second chute (14) is provided at the end of the third conveying belt (3), and the end of the second chute (14) is located above the reversible belt (4); A plurality of storage bins (5) are arranged at the bottom of the horizontally movable reversible belt (4), a bin conveying belt (7) is arranged below the storage bins (5), and an automatic packaging system (6) is arranged at the end of the bin conveying belt (7).

2. The ferromolybdenum rapid screening device according to claim 1, characterized in that: The acute angle between the double-layer drum screen (2) and the ground is 5°.

3. The ferromolybdenum rapid screening device as claimed in claim 1, characterized in that: The sieve holes gradually increase in size along the material flow direction.

4. The ferromolybdenum rapid screening device according to claim 1, characterized in that: The apertures of the first feeding opening, the second feeding opening and the third feeding opening gradually decrease.

5. The ferromolybdenum rapid screening device according to claim 1, characterized in that: The inner walls of the first chute (11), the second chute (14), the third chute (12) and the fourth chute (13) are all provided with a wear-resistant layer.

6. The ferromolybdenum rapid screening device according to claim 1, characterized in that: The material outlet of the automatic packaging system (6) adopts a double-layer design.

7. The ferromolybdenum rapid screening device according to claim 1, characterized in that: It also includes a feeding system operation control box and a silo weighing instrument box, wherein the feeding system operation control box is electrically connected to the first conveyor belt (1), the second conveyor belt (8), the third conveyor belt (3), the reversible belt (4), the silo conveyor belt (7) and the external motor (15), and the silo weighing instrument box is electrically connected to the automatic packaging system (6).

8. The ferromolybdenum rapid screening device according to claim 1, characterized in that: A wear-resistant layer is provided inside the storage bin (5).

9. The ferromolybdenum rapid screening device according to claim 1, characterized in that: Four storage bins (5) are provided, and the storage capacity of the storage bins (5) is 20T.