Cement grinding mill with proportioning mechanism

Abstract

The invention relates to the technical field of cement grinding mills, in particular to a cement grinding mill with a proportioning mechanism, which comprises a machine body and a feeding mechanism mounted at a feeding hole of the machine body: a proportioning assembly is fixedly mounted above the feeding mechanism through a bracket; wherein the proportioning assembly comprises a material bin, the inner side of the material bin is divided into a raw material bin and an auxiliary agent bin through a partition plate, and hoppers are communicated with the lower side of the raw material bin and the lower side of the auxiliary agent bin. The feeding self-locking principle is formed, the problems that the raw materials and the dry fly ash are mixed in the feeding process and the matching amount is difficult to control are solved, the control principle is simple, feeding of the raw materials and the dry fly ash can be controlled respectively, the action stability can be guaranteed through the same control source, and the working efficiency is improved. And secondly, the weighing bin is arranged, so that accurate proportioning of the raw materials and the dry fly ash can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cement grinding, in particular to a cement grinder with a proportioning mechanism. BACKGROUND

[0002] The cement grinder is a key equipment in the cement production process, and its main function is to grind the cement clinker into fine powder so as to play a role in the concrete. The cement grinder usually includes a ball mill, which is a device for grinding materials by using steel balls in a rotating cylinder. Although the addition of grinding aids can improve the grinding efficiency, the cement plant still faces the challenge of how to further improve the production quality and reduce the energy consumption. For example, the use of iron alloy slag as a cement admixture brings new technical problems. The difficult grinding property of the iron alloy slag leads to low grinding station output, and the power consumption of the cement process is also relatively high.

[0003] At present, dry fly ash is added in the process of grinding the iron alloy slag to improve the grinding performance of the admixture. However, the current cement grinding equipment does not have a related proportioning structure, so the traditional dry fly ash addition method generally adopts manual addition. This method requires a large amount of manual labor, and it is difficult to accurately control the addition proportion by manual operation.

[0004] Therefore, in order to solve the above problems, we propose a cement grinder with a proportioning mechanism. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned shortcomings in the prior art and to provide a cement grinder with a proportioning mechanism.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A cement grinder with a proportioning mechanism is designed, which includes: A machine body and a feeding mechanism installed at the feeding port of the machine body: A proportioning assembly is fixedly installed above the feeding mechanism through a support; Wherein, the proportioning assembly includes a bin, a raw material bin and an additive bin are separated by a partition plate on the inner side of the bin, a hopper is communicated with the lower side of the raw material bin and the additive bin, a closure assembly is arranged below the hopper, and a driving assembly is further arranged at the bottom of the bin to drive the two closure assemblies to move.

[0007] Further, the closure assembly includes rotating arms rotating on both sides of the hopper, and a sealing plate is fixedly installed between the bottoms of the two rotating arms, wherein the bottom of the hopper and the sealing plate are arranged as a matching arc structure, and the bottom of the hopper is provided with a protrusion for stopping the sealing plate.

[0008] Further, a driving arm is fixedly installed on one side of the rotating arm, and a rotating shaft is rotatably connected between the two driving arms, and the rotating shaft is connected with the driving assembly.

[0009] Further, a frame is fixedly installed at the bottom of the material bin, and the driving assembly is fixed on the frame.

[0010] Further, the driving assembly comprises a fixed shaft fixed at the bottom of the frame, an angle plate is pinned on the fixed shaft, and a torsion spring is fixed between the angle plate and the fixed shaft; One end of the angle plate is pinned with a cylinder, and the other end is pinned with a push rod, and the shaft end of the cylinder and the other end of the push rod are respectively connected with two rotating shafts on the two sides.

[0011] Further, a weighing bin is further included, the weighing bin is sleeved and slides on the outside of the frame, and a discharging assembly is arranged at the lower end discharge port of the weighing bin.

[0012] Further, two stop blocks are fixedly installed on the inner side of the weighing bin, a weight sensor is fixedly installed on the two cross beams of the frame, and the stop blocks abut against the upper side of the weight sensor.

[0013] Further, the discharging assembly comprises a baffle which slides at the lower end discharge port of the weighing bin, a discharging cylinder is fixedly installed on the lower side of the weighing bin through an extension plate, and the discharging cylinder is fixed with one side of the baffle.

[0014] Further, the feeding mechanism comprises a feeding pipe connected to the side of the machine body, a screw conveyor is rotatably connected to the inner side of the feeding pipe, and a motor for driving the screw conveyor to rotate is fixed to the side end of the feeding pipe.

[0015] Further, an opening opposite to the bottom of the weighing bin is formed in the upper end of the feeding pipe, and the support is connected between the feeding pipe and the side wall of the material bin.

[0016] The cement mill with a proportioning mechanism has the advantages that: the driving assembly is used for respectively controlling the opening and closing of two hoppers in the application, so that the separate feeding of the raw material bin and the additive bin can be realized, the principle of self-locking feeding is formed, the problem that the raw material and the dry fly ash are mixed during the feeding process and it is difficult to control the proportioning amount is avoided, the control principle is simple, the raw material and the dry fly ash can be respectively controlled to feed, the stability of the action of the same control source can be ensured, and the weighing bin which is additionally arranged can realize the accurate proportioning between the raw material and the dry fly ash, and the stability of the quality of the cement grinding finished product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the application. Figure 2 This is a schematic diagram of the feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the proportioning component structure of the present invention; Figure 4 This is a schematic diagram of the stop block structure of the present invention; Figure 5 This is a schematic diagram of the closing component structure of the present invention; Figure 6 This is a schematic diagram of the drive component structure of the present invention.

[0018] In the diagram: 1. Machine body; 2. Feeding mechanism; 21. Feeding pipe; 22. Screwdriver; 23. Motor; 24. Opening; 3. Support; 4. Proportioning component; 41. Hopper; 42. Partition; 43. Raw material hopper; 44. Additive hopper; 45. Hopper; 451. Protrusion; 46. Frame; 5. Closing component; 51. Rotating arm; 52. Sealing plate; 53. Drive arm; 54. Rotating shaft; 6. Drive component; 61. Fixed shaft; 62. Angle plate; 63. Cylinder; 64. Push rod; 65. Torsion spring; 7. Weighing bin; 71. Stop block; 72. Weight sensor; 73. Extension plate; 74. Discharge cylinder; 8. Discharge component; 81. Baffle. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-6 As one embodiment of the present invention, a cement mill with a proportioning mechanism is disclosed. The cement mill includes a machine body 1 and a feeding mechanism 2 installed at the feed inlet of the machine body 1. Specifically, the machine body 1 is a ball mill, the specific structure of which has been disclosed in the prior art and will not be described in detail here. It should be noted in detail that, in this embodiment, a proportioning component 4 is fixedly installed above the feeding mechanism 2 via a bracket 3; The proportioning component 4 includes a hopper 41. Inside the hopper 41, a raw material hopper 43 and an additive hopper 44 are separated by a partition 42. A hopper 45 is connected to the lower side of the raw material hopper 43 and the additive hopper 44. A closing component 5 is provided below the hopper 45. A drive component 6 is also provided at the bottom of the hopper 41 to drive the two closing components 5 to move.

[0021] In other words, in this invention, the silo 41 is divided into a raw material silo 43 and an additive silo 44. When the cement batching is a single ferroalloy mixture, dry fly ash can be added to the additive silo 44. By adding dry fly ash to aid grinding and increase production, the hourly output of cement can be increased and the power consumption of the cement process can be reduced.

[0022] In some embodiments, the closing assembly 5 of the present invention includes rotating arms 51 that rotate on both sides of the hopper 45, and a sealing plate 52 is fixedly installed between the bottoms of the two rotating arms 51. The bottom of the hopper 45 and the sealing plate 52 are configured as matching arc-shaped structures. That is, the bottom of the hopper 45 is configured as an arc-shaped opening, and the sealing plate 52 is an arc-shaped plate. During operation, when the sealing plate 52 rotates away from the bottom of the hopper 45, feeding begins. When the sealing plate 52 blocks the bottom of the hopper 45, discharging stops. In addition, the bottom of the hopper 45 is provided with a protrusion 451 that stops the sealing plate 52. The protrusion 451 is used to stop the movement of the sealing plate 52 to ensure that the sealing plate 52 can stably close the bottom of the hopper 45.

[0023] Furthermore, in this embodiment, a drive arm 53 is fixedly installed on one side of the rotating arm 51, and a rotating shaft 54 ​​is rotatably connected between the two drive arms 53. The rotating shaft 54 ​​is connected to the drive assembly 6.

[0024] Based on the above embodiments, the bottom of the hopper 41 in this invention is fixedly installed with a frame 46, and the drive component 6 is fixed on the frame 46. Specifically, in this embodiment, the frame 46 is set as a rectangular frame structure, which is composed of multiple square tubes welded together in the transverse and longitudinal directions.

[0025] In a preferred embodiment, the drive assembly 6 of the present invention includes a fixed shaft 61 fixed to the bottom of the frame 46, and an angle plate 62 is pinned to the fixed shaft 61. Preferably, the angle plate 62 in this embodiment is set as an L-shaped plate, and a torsion spring 65 is fixed between the angle plate 62 and the fixed shaft 61. Wherein, one end of the corner plate 62 is pinned to a cylinder 63 and the other end is pinned to a push rod 64. The shaft end of the cylinder 63 and the other end of the push rod 64 are respectively connected to two rotating shafts 54 on both sides. Specifically, in this invention, the shaft end of the cylinder 63 and the end of the push rod 64 are fixedly installed with rings, and the rings are rotatably connected to the rotating shafts 54.

[0026] During the actual feeding process, raw materials are first added inside the raw material silo 43, and dry fly ash is added inside the additive silo 44. First, the cylinder 63 retracts, and its shaft end drives the rotating shaft 54 ​​to move. Under the thrust of the torsion spring 65, the corner plate 62 does not rotate. The drive arm 53 pulls the sealing plate 52 to rotate, thus opening the sealing plate 52 at the bottom of the raw material silo 43. At this time, the raw material silo 43 begins to be fed, and the material is conveyed to the machine body 1 by the feeding mechanism 2. When the raw material is added to the predetermined amount, the shaft end of the cylinder 63 extends and resets. At this time, the sealing plate 52 at the bottom of the raw material bin 43 closes until it touches the protrusion 451 at the bottom of the hopper 45, at which point the raw material bin 43 is closed. If dry fly ash needs to be added for grinding assistance, the shaft end of the control cylinder 63 extends further. Since the sealing plate 52 at the bottom of the raw material hopper 43 is already in place in this state, the cylinder 63 cannot extend further. The counter-thrust force overcomes the thrust of the torsion spring 65, thus driving the angle plate 62 to rotate. When the angle plate 62 rotates, it will drive the push rod 64 to move. In this way, the push rod 64 drives the sealing plate 52 at the bottom of the additive hopper 44 to move. At this time, the additive hopper 44 starts to feed. When the predetermined amount is added, the control can be stopped.

[0027] In other words, in this invention, a cylinder 63 is used to control the switching of the two hoppers 45 respectively, so as to realize the separate feeding of the raw material hopper 43 and the auxiliary agent hopper 44, forming a feeding self-locking principle, avoiding the problem of mixing of raw materials and dry fly ash during the feeding process, which makes it difficult to control the proportion. The control principle is simple, and it can not only control the feeding of raw materials and dry fly ash separately, but also ensure the stability of the operation with the same control source.

[0028] In addition, in order to control the amount added, the present invention also includes a weighing bin 7, which is sleeved and slidable on the outside of the frame 46, and a discharge component 8 is provided at the lower end of the weighing bin 7.

[0029] Based on the above embodiments, in this invention, two stop blocks 71 are fixedly installed on the inner side of the weighing chamber 7. The stop blocks 71 can be fixed to the inner side of the weighing chamber 7 by bolts. Weight sensors 72 are fixedly installed on the two crossbeams of the frame 46. The stop blocks 71 abut against the top of the weight sensors 72. Of course, in order to realize weight detection, the weight sensors 72 in this invention should be connected to an external control unit, such as a microcontroller or PLC. The weight measurement method belongs to conventional technical means in the field and will not be described in detail here.

[0030] Furthermore, the discharge assembly 8 of the present invention includes a baffle 81 that slides at the discharge port at the lower end of the weighing bin 7, and a discharge cylinder 74 is fixedly installed on the lower side of the weighing bin 7 via an extension plate 73, and the discharge cylinder 74 is fixed to one side of the baffle 81.

[0031] In other words, the weighing chamber 7 in this invention is used to receive the materials discharged from the raw material chamber 43 and the additive chamber 44. When the material falls into the weighing chamber 7, the weighing chamber 7 moves downward under gravity so that the stop block 71 abuts against the weight sensor 72. The weight sensor 72 can then detect the current weight of the weighing chamber 7. When the predetermined weight is reached, the corresponding hopper 45 is closed by the cylinder 63, and at the same time, the feeding cylinder 74 pushes the baffle 81 to move, opening the outlet of the weighing chamber 7. The material then enters the feeding mechanism 2 through the outlet of the weighing chamber 7 to complete the feeding operation. This method can achieve accurate proportioning between raw materials and dry fly ash, improving the stability of the quality of cement grinding products.

[0032] In some embodiments, the feeding mechanism 2 of the present invention includes a feeding pipe 21 connected to the side of the machine body 1, an auger 22 rotatably connected to the inner side of the feeding pipe 21, and a motor 23 for driving the auger 22 to rotate is fixed to the side end of the feeding pipe 21.

[0033] Furthermore, in this invention, the upper end of the feed pipe 21 is provided with an opening 24 opposite to the bottom of the weighing bin 7, and the bracket 3 is connected between the feed pipe 21 and the side wall of the bin 41. Preferably, in this invention, four brackets 3 are provided, and each pair is fixed to the side of the bin 41.

[0034] In summary, this invention uses a cylinder 63 to control the switching of two hoppers 45, thus enabling separate feeding of the raw material hopper 43 and the additive hopper 44, forming a self-locking feeding principle. This avoids the problem of raw materials and dry fly ash mixing during the feeding process, making it difficult to control the proportions. The control principle is simple, allowing for separate control of the feeding of raw materials and dry fly ash, while the same control source ensures the stability of the operation. Furthermore, the weighing hopper 7 enables accurate proportioning of raw materials and dry fly ash, improving the stability of the cement grinding product quality.

[0035] 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 mill having a proportioning mechanism, characterized by, Include: Machine body (1) and the feeding mechanism (2) installed at the feeding port of the machine body (1): The matching assembly (4) is fixedly installed above the feeding mechanism (2) through the support (3); Wherein, the matching assembly (4) includes a hopper (41), which is divided into a raw material bin (43) and an additive bin (44) by a partition (42) on the inside of the hopper (41), and a hopper (45) is communicated below the raw material bin (43) and the additive bin (44), a hinge assembly (5) is arranged below the hopper (45), and a driving assembly (6) is further arranged at the bottom of the hopper (41) to drive the two hinge assemblies (5) to move.

2. The cement mill with a proportioning mechanism according to claim 1, characterized in that: The hinge assembly (5) includes a rotating arm (51) rotating on both sides of the hopper (45), and a sealing plate (52) is fixedly installed between the bottoms of the two rotating arms (51), wherein the bottom of the hopper (45) and the sealing plate (52) are arranged in a matching arc structure, and the bottom of the hopper (45) is provided with a protrusion (451) for stopping the sealing plate (52).

3. The cement mill with a proportioning mechanism according to claim 2, characterized in that: A driving arm (53) is fixedly installed on one side of the rotating arm (51), and a rotating shaft (54) is rotatably connected between the two driving arms (53), and the rotating shaft (54) is connected with the driving assembly (6).

4. The cement mill with a proportioning mechanism according to claim 3, characterized in that: The bottom of the hopper (41) is fixedly installed with a frame (46), and the driving assembly (6) is fixed on the frame (46).

5. The cement mill with proportioning mechanism according to claim 4, characterized in that: The driving assembly (6) includes a fixed shaft (61) fixed at the bottom of the frame (46), an angle plate (62) pinned on the fixed shaft (61), and a torsional spring (65) fixed between the angle plate (62) and the fixed shaft (61); Wherein, one end of the angle plate (62) is pinned with a gas cylinder (63), and the other end is pinned with a push rod (64), and the shaft end of the gas cylinder (63) and the other end of the push rod (64) are respectively connected with two rotating shafts (54) on both sides.

6. The cement mill with proportioning mechanism according to claim 4, characterized in that: It also includes a weighing bin (7) which is sleeved and slides on the outside of the frame (46), and a discharging assembly (8) is arranged at the discharge port of the lower end of the weighing bin (7).

7. The cement mill with proportioning mechanism according to claim 6, characterized in that: The inside of the weighing bin (7) is fixedly installed with two stop blocks (71), and a weight sensor (72) is fixedly installed on the two cross beams of the frame (46), and the stop blocks (71) abut above the weight sensor (72).

8. The cement mill with a proportioning mechanism according to claim 7, characterized in that: The discharging assembly (8) includes a baffle (81) sliding at the discharge port of the lower end of the weighing bin (7), a discharging cylinder (74) is fixedly installed on the lower side of the weighing bin (7) through an extension plate (73), and the discharging cylinder (74) is fixed with one side of the baffle (81).

9. The cement mill with proportioning mechanism according to claim 6, characterized in that: The feeding mechanism (2) includes a feeding pipe (21) connected to the side of the machine body (1), a screw conveyor (22) rotatably connected inside the feeding pipe (21), and a motor (23) fixed at the side end of the feeding pipe (21) to drive the screw conveyor (22) to rotate.

10. The cement mill with a proportioning mechanism according to claim 9, characterized in that: An opening (24) is formed in the upper end of the feeding pipe (21) and is opposite the bottom of the weighing bin (7), and the support (3) is connected between the feeding pipe (21) and the sidewall of the bin (41).

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