Final grinding system of cement roller press

Abstract

The invention relates to the technical field of material powder selecting equipment, in particular to a cement roller press final grinding system which comprises a V-shaped powder selecting machine shell, an air inlet, a feeding port, a fine powder outlet and a coarse powder outlet. A guide assembly for guiding fine powder is further arranged in the V-shaped powder concentrator shell; an air inlet is formed in the V-shaped powder concentrator, two air baffles are rotationally arranged in the air inlet, an adjusting mechanism matched with the air baffles is arranged in the air inlet, a scattering assembly is arranged in the V-shaped powder concentrator to scatter caked raw materials discharged by a roller press, and coarse powder and fine powder are separated through cooperation of the air inlet and a plurality of screening plates; the fine powder is discharged along the fine powder outlet through the guide assembly, the position of the wind shield is controlled by arranging the adjusting mechanism, blocking is conducted, the wind speed and direction are changed, the sorting effect of the V-shaped powder concentrator is improved, and the fine powder return amount is reduced.

Description

Technical Field

[0001] This invention relates to the field of material classifying equipment technology, and in particular to a final grinding system for a cement roller press. Background Technology

[0002] The cement production system, which combines grinding and semi-finishing grinding, consists of two parts: the first half is composed of a roller press, a V-shaped classifier, a double-separation classifier, a cyclone separator, and a circulating fan; the second half is composed of a cement mill, a classifier, a pulse bag filter dust collector, and an exhaust fan. In the development history of cement grinding equipment, traditional processes have used tube mills as the main equipment. Ball mills have been used to this day due to their stable operation. The only drawback is that they have too much ineffective work in impact crushing, resulting in low grinding efficiency and high power consumption. The energy consumption of roller presses, which have higher pressure in bed grinding, is better than that of vertical mills in bed grinding, and much lower than that of traditional grinding.

[0003] The final grinding process of a cement roller press includes material metering and batching, lifting and conveying, and other processes. It includes equipment such as roller presses, air classifiers, dust collectors, and fans. Cement raw materials are transported by two sets of belt conveyors: one set of cement clinker is metered, batched, lifted, and conveyed directly into the stabilizing chamber and injected into the roller press, where it is then crushed and ground. The material exiting the roller press is sent to the air classifier for sorting by a circulating elevator. The other set of materials consists of mixed materials and auxiliary materials, which are metered, batched, and conveyed directly into the V-air classifier. The V-type air classifier disperses and sorts the materials. The fine powder from the V-air classifier enters a three-stage fine air classifier via pipeline for final sorting and drying. The coarse material (from the V-type air classifier and the dynamic air classifier) ​​is returned to the roller press for further crushing, while the qualified cement product is carried by air into a pulse bag filter for collection and then transported to the cement product warehouse via an air chute. The entire system is powered by a system fan after the pulse bag filter. However, in actual use, the coarse material discharged from the coarse powder outlet of the V-type classifier contains a large amount of fine powder, which increases the amount of material returned by the roller press, increases the load on the roller press system, and reduces the actual efficiency of the roller press when it is working by pressing coarse and fine powder. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the presence of a large amount of fine powder in the coarse material discharged from the V-type classifier, which increases the amount of material returned by the roller press, and the roller press reducing the actual efficiency of the roller press by pressing both coarse and fine powder during operation. Therefore, this invention proposes a final grinding system for a cement roller press.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design a cement roller press final grinding system, including a V-type air classifier housing, an air inlet, a feed inlet, a fine powder outlet, and a coarse powder outlet. The air inlet is located on one side of the V-type air classifier housing, the feed inlet and the fine powder outlet are both located at the upper end of the V-type air classifier housing, and the coarse powder outlet is located at the lower end of the V-type air classifier housing. The V-type air classifier housing is equipped with a dispersing component and multiple screening plates, and a guiding component for guiding the fine powder is also provided inside the V-type air classifier housing. Two baffles are rotatably installed inside the air inlet, and the two baffles are at an angle to the housing of the V-type classifier. An adjustment mechanism that cooperates with the baffles is provided inside the air inlet.

[0006] Furthermore, the adjustment mechanism includes two connecting seats respectively disposed on the air inlet and the wind deflector, and a drive assembly is disposed between the two connecting seats.

[0007] Furthermore, the drive assembly includes a first cylinder rotatably connected to one of the connecting seats, the output shaft of the first cylinder being fixedly provided with a connecting block, and the connecting block being rotatably connected to the other connecting seat.

[0008] Furthermore, an extension plate is slidably disposed on the wind deflector, and a second cylinder is fixedly disposed on the wind deflector, with the output shaft of the second cylinder fixedly connected to the extension plate.

[0009] Furthermore, a dovetail groove is provided on the extension plate, and a dovetail column that cooperates with the dovetail groove is fixedly provided on the wind baffle plate.

[0010] Furthermore, the disintegration assembly includes two mounting plates, and a plurality of disintegration plates are fixedly disposed between the two mounting plates, all of which are inclined structures.

[0011] Furthermore, the housing of the V-shaped classifier is provided with a guide groove that cooperates with the mounting plate, and the mounting plate is provided with an adjustment component that cooperates with the guide groove.

[0012] Furthermore, the adjustment component includes a guide block slidably disposed in the guide groove, and a guide post slidably connected to the guide block is fixedly disposed in the guide groove.

[0013] Furthermore, an abutment block is slidably disposed inside the guide block, and a hand-tightening part is threadedly connected to the guide block, the hand-tightening part being rotatably connected to the abutment block.

[0014] Furthermore, the guiding assembly includes a guide plate rotatably connected to the V-shaped classifier housing, and a buffer spring is provided between the V-shaped classifier housing and the guide plate.

[0015] The cement roller press final grinding system proposed in this invention has the following advantages: In this invention, a dispersing component is installed inside the V-type classifier to disperse the agglomerated raw material discharged from the roller press. The coarse powder is separated from the fine powder by the air inlet and multiple screening plates. The fine powder is discharged along the fine powder outlet through the guide component. The position of the baffle plate is controlled by the setting adjustment mechanism to block and change the wind speed and direction, thereby improving the separation effect of the V-type classifier and reducing the amount of fine powder returned. Secondly, in this invention, by setting a second cylinder to drive the extension plate to move, the coverage area of ​​the wind baffle is increased, which facilitates blocking and changing wind speed and direction. By setting an adjustment component to control the position of the mounting plate and the dispersing plate, the effect of dispersing the raw materials is increased, which facilitates powder selection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the final grinding system of a cement roller press proposed in this invention; Figure 2 This is a schematic diagram of the structure of the screening plate of the present invention; Figure 3 This is a schematic diagram of the enlarged structure of region A of the present invention; Figure 4 This is a schematic diagram of the enlarged structure of region B of the present invention; Figure 5 This is a schematic diagram of the structure of the disintegration plate of the present invention; Figure 6 This is a schematic diagram of the enlarged structure of region C of the present invention; Figure 7 This is a schematic diagram of the guide groove of the present invention.

[0017] In the diagram: 1. V-shaped air classifier housing; 2. Air inlet; 21. Baffle plate; 22. Extension plate; 23. Second cylinder; 24. Dovetail groove; 25. Dovetail column; 3. Feed inlet; 4. Fine powder outlet; 5. Coarse powder outlet; 6. Dispersing component; 61. Mounting plate; 62. Dispersing plate; 63. Guide groove; 64. Adjusting component; 641. Guide block; 642. Abutment block; 643. Hand-tightening part; 65. Guide column; 7. Screening plate; 8. Guide component; 81. Guide plate; 82. Buffer spring; 9. Adjusting mechanism; 91. Connecting seat; 92. Cylinder; 93. Connecting block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1-7A cement roller press final grinding system includes a V-type classifier housing 1, an air inlet 2, a feed inlet 3, a fine powder outlet 4, and a coarse powder outlet 5. The air inlet 2 is located on one side of the V-type classifier housing 1. The feed inlet 3 and the fine powder outlet 4 are both located at the upper end of the V-type classifier housing 1. The coarse powder outlet 5 is located at the lower end of the V-type classifier housing 1. A dispersing component 6 and multiple screening plates 7 are installed inside the V-type classifier housing 1. A guiding component 8 for guiding the fine powder is also installed inside the V-type classifier housing 1. Two baffles 21 are rotatably installed inside the air inlet 2. The two baffles 21 have an angle with the V-type classifier housing 1. An adjustment mechanism 9 that cooperates with the baffles 21 is installed inside the air inlet 2.

[0020] In this invention, a dispersing component 6 is installed inside the V-type classifier to disperse the agglomerated raw material discharged from the roller press, forming a mixture of fine and coarse powder. The coarse powder is separated from the fine powder by coarse powder through the air inlet 2 and multiple screening plates 7. The fine powder is discharged along the fine powder outlet 4 through the guide component 8. The position of the baffle plate 21 is controlled by the adjustment mechanism 9 to block and change the wind speed and direction, thereby improving the separation effect of the V-type classifier and reducing the amount of fine powder returned.

[0021] Furthermore, in this embodiment, the adjustment mechanism 9 includes two connecting seats 91 respectively disposed on the air inlet 2 and the baffle plate 21. A driving component is disposed between the two connecting seats 91. By setting the driving component to control the position of the baffle plate 21, the separation effect of the V-type air classifier can be improved by blocking, changing the wind speed and direction, etc.

[0022] In this embodiment, the drive assembly includes a first cylinder 92 rotatably connected to a connecting seat 91. The output shaft of the first cylinder 92 is fixedly provided with a connecting block 93, which is rotatably connected to another connecting seat 91. When the output shaft of the first cylinder 92 extends, it drives the baffle plate 21 to rotate, thereby controlling the rotation of the baffle plate 21 and changing its angle, thereby blocking, changing the wind speed and direction, etc., to improve the sorting effect of the V-type air classifier.

[0023] Furthermore, in this embodiment, an extension plate 22 is slidably disposed on the wind deflector 21, and a second cylinder 23 is fixedly disposed on the wind deflector 21. The output shaft of the second cylinder 23 is fixedly connected to the extension plate 22. The position of the extension plate 22 is controlled by the second cylinder 23 to adjust the wind deflector area of ​​the wind deflector 21, so as to facilitate blocking and changing wind speed and direction.

[0024] In this embodiment, a dovetail groove 24 is provided on the extension plate 22, and a dovetail post 25 that cooperates with the dovetail groove 24 is fixedly provided on the wind baffle 21. By setting the dovetail post 25 to cooperate with the dovetail groove 24, the movement trajectory of the extension plate 22 is restricted, and the extension plate 22 is prevented from separating from the wind baffle 21.

[0025] It should be noted that in this embodiment, the dispersing component 6 includes two mounting plates 61, and a plurality of dispersing plates 62 are fixedly arranged between the two mounting plates 61. The dispersing plates 62 are all inclined structures. The raw material enters the housing 1 from the feed port 3. The clumps of raw material fall and collide with the dispersing plates 62, breaking the raw material into powder.

[0026] In this embodiment, the housing 1 of the V-type classifier is provided with a guide groove 63 that cooperates with the mounting plate 61. The mounting plate 61 is provided with an adjustment component 64 that cooperates with the guide groove 63. The position of the dispersing component 6 is fixed by the adjustment component 64 to prevent the position of the dispersing component 6 from changing during use.

[0027] Furthermore, in this embodiment, the adjustment component 64 includes a guide block 641 slidably disposed in the guide groove 63, and a guide post 65 slidably connected to the guide block 641 is fixedly disposed in the guide groove 63. By cooperating with the guide block 641 and the guide groove 63, the movement trajectory of the dispersing component 6 is restricted. The position of the dispersing component 6 can be adjusted according to the state of the raw material, so that the raw material is fully dispersed.

[0028] In this embodiment, an abutment block 642 is slidably disposed inside the guide block 641, and a hand-tightening part 643 is threadedly connected to the guide block 641. The hand-tightening part 643 is rotatably connected to the abutment block 642. The position of the abutment block 642 is controlled by rotating the hand-tightening part 643. When the disintegrating component 6 is fixed, the abutment block 642 abuts against the guide post 65, and the friction increases, thereby fixing the position of the guide block 641 and the disintegrating component 6.

[0029] More specifically, in some embodiments, the guide assembly 8 includes a guide plate 81 rotatably connected to the V-type classifier housing 1. A buffer spring 82 is provided between the V-type classifier housing 1 and the guide plate 81. When the fine powder is blown by the wind, it impacts the guide plate 81 and is discharged from the fine powder outlet 4 along the guide plate 81. The buffer spring 82 buffers the guide plate 81 to prevent the guide plate 81 from deforming after long-term use.

[0030] Working principle: During operation, raw materials enter the housing 1 through the feed inlet 3. Clumped raw materials fall and collide with the dispersing plate 62, breaking the raw materials into powder. Through the air inlet 2 and multiple screening plates 7, coarse powder is separated from fine powder. Fine powder is blown by the wind and collides with the guide plate 81, and is discharged from the fine powder outlet 4 along the guide plate 81. The output shaft of the first cylinder 92 controls the rotation of the baffle plate 21, changing its angle, thereby blocking, changing the wind speed and direction, improving the sorting effect of the V-type powder classifier, and reducing the amount of fine powder returned. The position of the extension plate 22 is controlled by the second cylinder 23, adjusting the wind-blocking area of ​​the baffle plate 21. The position of the dispersing component 6 can be adjusted according to the state of the raw materials, so that the raw materials are fully dispersed. The position of the abutment block 642 is controlled by rotating the hand-tightening part 643. When the dispersing component 6 is fixed, the abutment block 642 abuts against the guide column 65, increasing the friction, and fixing the position of the guide block 641 and the dispersing component 6.

[0031] 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 equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cement roller press final grinding system, comprising a V-type classifier housing (1), an air inlet (2), a feed inlet (3), a fine powder outlet (4), and a coarse powder outlet (5), characterized in that, The air inlet (2) is located on one side of the V-type classifier housing (1), the feed inlet (3) and the fine powder outlet (4) are both located at the upper end of the V-type classifier housing (1), the coarse powder outlet (5) is located at the lower end of the V-type classifier housing (1), the V-type classifier housing (1) is provided with a dispersing component (6) and multiple screening plates (7), and the V-type classifier housing (1) is also provided with a guiding component (8) for guiding fine powder. Two baffles (21) are rotatably arranged inside the air inlet (2). The two baffles (21) have an angle with the V-type classifier housing (1). An adjustment mechanism (9) that cooperates with the baffles (21) is provided inside the air inlet (2).

2. The cement roller press final grinding system according to claim 1, characterized in that: The adjustment mechanism (9) includes two connecting seats (91) respectively disposed on the air inlet (2) and the baffle plate (21), and a drive assembly is disposed between the two connecting seats (91).

3. The cement roller press final grinding system according to claim 2, characterized in that: The drive assembly includes a first cylinder (92) rotatably connected to one of the connecting seats (91), and a connecting block (93) is fixedly provided on the output shaft of the first cylinder (92), the connecting block (93) being rotatably connected to the other connecting seat (91).

4. The cement roller press final grinding system according to claim 3, characterized in that: An extension plate (22) is slidably disposed on the wind deflector (21), and a second cylinder (23) is fixedly disposed on the wind deflector (21). The output shaft of the second cylinder (23) is fixedly connected to the extension plate (22).

5. The final grinding system for a cement roller press according to claim 4, characterized in that: The extension plate (22) is provided with a dovetail groove (24), and the wind baffle (21) is fixedly provided with a dovetail column (25) that cooperates with the dovetail groove (24).

6. The final grinding system for a cement roller press according to claim 1, characterized in that: The dispersing component (6) includes two mounting plates (61), and a plurality of dispersing plates (62) are fixedly arranged between the two mounting plates (61). All the dispersing plates (62) are inclined structures.

7. The final grinding system for a cement roller press according to claim 6, characterized in that: The V-shaped classifier housing (1) is provided with a guide groove (63) that cooperates with the mounting plate (61), and the mounting plate (61) is provided with an adjustment component (64) that cooperates with the guide groove (63).

8. The final grinding system for a cement roller press according to claim 7, characterized in that: The adjustment component (64) includes a guide block (641) slidably disposed in the guide groove (63), and a guide post (65) slidably connected to the guide block (641) is fixedly disposed in the guide groove (63).

9. The final grinding system for a cement roller press according to claim 8, characterized in that: An abutment block (642) is slidably disposed inside the guide block (641), and a hand-tightening part (643) is threadedly connected to the guide block (641). The hand-tightening part (643) is rotatably connected to the abutment block (642).

10. The final grinding system of a cement roller press according to claim 1, characterized in that: The guiding assembly (8) includes a guide plate (81) rotatably connected to the V-type classifier housing (1), and a buffer spring (82) is provided between the V-type classifier housing (1) and the guide plate (81).

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