Steady-flow weighing and discharging device of cement roller press

Abstract

The utility model discloses a steady-flow weighing and blanking device of a cement roller press. The steady-flow weighing and blanking device comprises a weighing bin, a ventilation cap, a ventilation pipeline, an unloader, a buffer ventilation hopper and a blanking scraper-trough conveyer, a feeding port is formed in the middle of the top of the weighing bin, a plurality of ventilation ports are annularly distributed around the feeding port, and ventilation caps are installed on the ventilation ports. The discharger is mounted at a discharging opening in the bottom of the weighing bin, and the discharging scraper-trough conveyer is mounted at the lower end of the discharger; openings are formed in the two sides of the discharging scraper-trough conveyer, buffering ventilation hoppers are installed on the openings, ventilation nozzles are formed in the two sides of the weighing bin, and the two ventilation nozzles are connected with the openings in the upper ends of the two buffering ventilation hoppers through ventilation pipelines respectively. According to the discharging device, redundant air in the discharging scraper-trough conveyer can be effectively discharged, and meanwhile the phenomenon that the discharging speed of materials in the bin is reduced due to the fact that negative pressure is formed in the bin during discharging of the weighing bin is avoided; and smooth blanking and stable flow are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cement manufacturing, in particular to a steady flow weighing and feeding device for a cement roller press. Background Art

[0002] The roller press uses two grinding rollers to apply pure pressure to the material. The crushed material is squeezed to form a dense material bed, and strong stress is generated inside the particles, causing cracks and crushing. The material after the roller press forms a very low-strength cake. After being crushed by the scatterer, the particles with a particle size of less than 2mm account for 80% to 90% of the product. Its main features are: high pressure, full speed, full material, and material bed crushing. The roller press consists of two extrusion rollers that rotate synchronously in opposite directions, one is a fixed roller and the other is a movable roller. The material is fed from the top of the two rollers and is continuously brought into the roller space by the extrusion rollers. After being subjected to a high pressure of 100-150MPa, it becomes a dense cake and is discharged from the bottom of the machine. The discharged cake contains a certain proportion of fine-grained finished products. A large number of cracks are generated inside the non-finished particles, which improves the grindability of the material and can greatly reduce the energy consumption of grinding in the further crushing process. The material passes through the rollers in three stages: full material density, laminated crushing, and agglomeration discharge.

[0003] The top of the roller press is usually equipped with a weighing bin, which is used to store the coarse particles that have not been selected by the wind in the system and the ingredients of fresh cement, so as to realize the continuous and stable feeding of the roller press. A certain material height is ensured in the weighing bin of the roller press, and a certain material pressure is formed by the accumulated weight of the materials. The roller press is fed continuously and stably through the rectangular unloading chute. The bulk materials entering the weighing bin are mainly divided into two parts: the unbroken extruded materials from the V-type powder selector, and the large-particle clinker or mixed materials in the fresh incoming materials. The mixed materials are mainly composed of high-temperature clinker, desulfurized gypsum with a large moisture content, and mixed materials.

[0004] During the production and operation of the roller press, the problem of poor material discharge from the weighing bin is often encountered, causing the roller press to be unable to work normally. The main reason for the poor material discharge is that the ventilation in the weighing bin is poor when the material is discharged, and the excess air in the discharge chute cannot be discharged, especially when there is too much fine powder in the weighing bin or the coarse and fine powder distribution is uneven. Poor ventilation will lead to reduced material fluidity in the discharge chute and unstable flow rate of coarse and fine materials, which can easily cause poor material discharge from the weighing bin. Utility Model Content

[0005] In view of the problems in the prior art, the utility model provides a steady-flow weighing and unloading device for a cement roller press, comprising: a weighing bin, a vent cap, a vent pipe, a discharger, a buffer vent bucket, and a unloading chute; a feed port is provided in the middle of the top of the weighing bin, a plurality of vents are distributed circumferentially around the feed port, and a vent cap is installed on the vent; a discharger is installed at the unloading port at the bottom of the weighing bin, and a unloading chute is installed at the lower end of the discharger; the unloading chute has openings on both sides, and a buffer vent bucket is installed on the opening, and the buffer vent bucket is inverted; vent nozzles are provided on both sides of the weighing bin, and the two vent nozzles are respectively connected to the upper openings of the two buffer vent buckets through vent pipes.

[0006] Preferably, it also includes a feed hose; the feed hose at the feed port of the weighing bin is connected to the feeder.

[0007] Preferably, the ventilation pipeline includes a first ventilation pipe, a ventilation hose, and a second ventilation pipe; the upper end of the first ventilation pipe is connected to the ventilation nozzle, the lower end of the first ventilation pipe is connected to the upper end of the second ventilation pipe through the ventilation hose, and the lower end of the second ventilation pipe is connected to the upper end of the buffer ventilation hopper; the lower end of the discharger is connected to the discharge chute through the discharge hose.

[0008] Preferably, both ends of the feed hose are provided with pipe clamps A; and both ends of the discharge hose are provided with pipe clamps B.

[0009] Preferably, the vent cap comprises a cavity, bolts, an end cover, and a protective net; filter cotton is arranged in the cavity; the upper end of the cavity is provided with a flange, and the flange is detachably connected to the end cover by bolts; and the end cover is provided with a round hole in the middle.

[0010] Preferably, a protective net is provided on the circular hole in the middle of the end cover.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The unloading device is equipped with a ventilation pipeline on the unloading chute and a ventilation cap on the weighing bin, so that the excess air inside the unloading chute can be effectively discharged, and at the same time, negative pressure is avoided in the bin when unloading the weighing bin, which causes the material discharge speed in the bin to decrease, thus ensuring smooth unloading and stable flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0014] Figure 2 It is a schematic structural diagram of the second embodiment of the utility model;

[0015] Figure 3 yes Figure 2 A local enlarged view of point A in FIG.

[0016] In the figure: weighing bin-1, feed port-2, feed hose-3, pipe clamp A-31, vent nozzle-4, vent cap-5, cavity-51, bolt-52, end cover-53, protective net-54, filter cotton-55, ventilation pipeline-6, first ventilation pipe-61, ventilation hose-62, second ventilation pipe-63, discharger-7, discharge hose-8, pipe clamp B-81, buffer ventilation bucket-9, discharge chute-10, fixing frame-11, vent port-101. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention:

[0018] like Figure 1 As shown, in the first embodiment of the utility model, a steady-flow weighing and unloading device for a cement roller press comprises: a weighing bin 1, a vent cap 5, a vent pipe 6, a discharger 7, a buffer ventilation bucket 9, and a unloading chute 10; a feed port 2 is provided at the middle position on the top of the weighing bin 1, and a plurality of vents 101 are distributed circumferentially around the feed port 2, and a vent cap 5 is installed on the vent 101 for balancing the air pressure inside and outside the weighing bin 1; a discharger 7 is installed at the unloading port at the bottom of the weighing bin 1, and a unloading chute 10 is installed at the lower end of the discharger 7; the unloading chute 10 has openings on both sides, and a buffer ventilation bucket 9 is installed on the opening, and the buffer ventilation bucket 9 is inverted. The inverted setting makes the large opening of the buffer ventilation bucket 9 located at the lower end and the small opening located at the upper end, which facilitates ventilation while preventing materials from entering; ventilation nozzles 4 are provided on both sides of the weighing bin 1, and the two ventilation nozzles 4 are respectively connected to the upper openings of the two buffer ventilation buckets 9 through the vent pipe 6.

[0019] Working principle: after the weighing of the material in the weighing bin 1 is completed, it enters the unloading chute 10 through the discharger 7. During the falling process of the material, the buffer ventilation buckets 9 and the ventilation pipeline 6 on both sides ensure the ventilation inside the unloading chute 10. The excess air in the unloading chute 10 reaches the weighing bin 1 along the air pipeline 6, and then is discharged through the ventilation cap 5. The ventilation cap 5 also ensures that the air pressure in the weighing bin 1 is stable, ensuring smooth unloading and stable flow.

[0020] like Figure 2-3 As shown, in the second embodiment of the utility model, a feed hose 3 is further included on the basis of the embodiment; the feed hose 3 of the feed port 2 of the weighing bin 1 is connected to the feeder to avoid affecting the weighing of the weighing bin 1.

[0021] In the second embodiment of the utility model, the ventilation pipeline 6 includes a first ventilation pipe 61, a ventilation hose 62, and a second ventilation pipe 63; the upper end of the first ventilation pipe 61 is connected to the ventilation nozzle 4, the lower end of the first ventilation pipe 61 is connected to the upper end of the second ventilation pipe 63 through the ventilation hose 62, and the lower end of the second ventilation pipe 63 is connected to the upper end of the buffer ventilation bucket 9; the lower end of the discharger 7 is connected to the unloading chute 10 through the unloading hose 8.

[0022] In the second embodiment of the present utility model, specifically, both ends of the feed hose 3 are provided with pipe clamps A31; and both ends of the discharge hose 8 are provided with pipe clamps B81, which are convenient for disassembly and assembly.

[0023] During specific implementation, the unloading hose 8 separates the lower part of the weighing bin 1 from the unloading chute 10, and the ventilation hose 62 separates the part of the ventilation pipeline 6 connecting the ventilation pipeline 6 with the weighing bin 1 and the part connected with the unloading chute 10. The lower end of the unloading chute 10 is fixed at the feeding port of the roller press, which does not affect the weighing operation of the weighing bin 1.

[0024] In the above embodiment, the vent cap 5 includes a cavity 51, bolts 52, an end cover 53, and a protective net 54; a filter cotton 55 is arranged in the cavity 51 to facilitate filtering of internal dust and ensure the cleanliness of the workshop; the upper end of the cavity 51 is provided with a flange, and the flange is detachably connected to the end cover 53 by bolts 52; the end cover 53 is provided with a circular hole in the middle to facilitate ventilation, and a protective net 54 is arranged on the circular hole to prevent impurities from entering.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention based on the technical solution and improved concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cement roller press steady flow weighing feeding device, comprising: Weighing bin, vent cap, ventilation pipeline, discharger, buffer ventilation bucket, unloading chute; characterized in that: a feed port is provided in the middle position of the top of the weighing bin, and multiple ventilation ports are distributed circumferentially around the feed port, and a vent cap is installed on the vent; a discharger is installed at the unloading port at the bottom of the weighing bin, and a unloading chute is installed at the lower end of the discharger; the unloading chute has openings on both sides, and buffer ventilation buckets are installed on the openings, and the buffer ventilation buckets are inverted; ventilation nozzles are provided on both sides of the weighing bin, and the two ventilation nozzles are respectively connected to the upper openings of the two buffer ventilation buckets through ventilation pipelines.

2. A cement roller press steady flow weighing feeding device according to claim 1, characterized in that: It also includes a feeding hose; the feeding hose at the feeding port of the weighing bin is connected with the feeder.

3. A cement roller press steady flow weighing feeding device according to claim 2, characterized in that: The ventilation pipeline includes a first ventilation pipe, a ventilation hose, and a second ventilation pipe; the upper end of the first ventilation pipe is connected to the ventilation nozzle, the lower end of the first ventilation pipe is connected to the upper end of the second ventilation pipe through the ventilation hose, and the lower end of the second ventilation pipe is connected to the upper end of the buffer ventilation bucket; the lower end of the discharger is connected to the discharge chute through the discharge hose.

4. The steady flow weighing and unloading device for cement roller press according to claim 3 is characterized in that: The two ends of the feeding hose are provided with pipe clamps A; the two ends of the unloading hose are provided with pipe clamps B.

5. A cement roller press steady flow weighing feeding device according to claim 1 or 4, characterized in that: The vent cap comprises a cavity, bolts, an end cover and a protective net; filter cotton is arranged in the cavity; the upper end of the cavity is provided with a flange, which is detachably connected to the end cover by bolts; and the middle of the end cover is provided with a round hole.

6. A cement roller press steady flow weighing feeding device according to claim 5, characterized in that: A protective net is arranged on the circular hole in the middle of the end cover.

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