A cement packaging system

Abstract

The present invention discloses a cement packaging system. By arranging a first air conveying chute with a feed port facing the finished cement elevator at the discharge port of the finished cement elevator, and arranging a diversion conversion valve at the feed port of the first air conveying chute, the problem of simultaneous shipment of bagged and bulk cement is effectively solved, and the equipment utilization rate is high. By arranging a first dust collector at the discharge port of the finished cement conveying chute and on the top of the bulk cement warehouse, and arranging a second dust collector above the vibrating screen, the dust generated during the lifting and packaging process is collected and collected, and the dust emission is controlled to meet the national environmental protection requirements, eliminating the environmental safety hazards of unorganized dust. In addition, the cement loader is placed in the second noise reduction and soundproof room, the third centrifugal fan of the main dust collector is placed in the first noise reduction and soundproof room, and sound insulation felt is bonded to the door of the air compressor room where the air compressor is placed. Multi-path sound insulation is adopted to further achieve the purpose of energy saving and noise reduction.

Description

Technical Field

[0001] The present invention relates to the technical field of cement packaging, in particular to a cement packaging system. Background Art

[0002] The cement packaging system is a specialized system for bagged cement production, used to automatically package cement. Cement shipment often requires quantitative packaging, but existing cement packaging systems cannot handle both bagged and bulk shipments, resulting in significant limitations. Energy consumption for separate shipments is also high, reaching 5.6 kWh / t, hindering production cost control.

[0003] Analysis of the current status of the cement packaging system shows that the following problems exist: (1) Bulk loading cannot meet the standard tonnage loading requirements, the loading efficiency is low, there are great safety hazards, and the energy consumption remains high, resulting in low customer satisfaction and affecting market sales; (2) Bag loading cannot achieve accurate counting and the loading status cannot be remotely monitored; (3) Bag and bulk cement cannot be loaded and shipped at the same time, the classification loading process is cumbersome, and the equipment energy consumption is high; (4) During the loading process, when the bagged cement loader loads the bag, there is no effective dust collection facility to collect the dust generated, and the concentration of unorganized dust emissions seriously exceeds the standard. Summary of the Invention

[0004] The present invention provides a cement packaging system, aiming to solve the problem that bagged cement and bulk cement cannot be loaded and shipped at the same time, resulting in low loading efficiency and high energy consumption.

[0005] The present invention relates to a cement packaging system, comprising a finished cement conveying chute, the finished cement conveying chute discharge port is communicated with the finished cement elevator feed port, a first air conveying chute with a feed port facing the finished cement elevator is provided below the finished cement elevator discharge port, a diversion conversion valve is provided at the feed port of the first air conveying chute, a cement bulk warehouse is provided below the first air conveying chute, and a flow meter is provided at the outlet of the cement bulk warehouse; the first air conveying chute discharge port corresponds to the cement packaging return ash elevator discharge port, a vibrating screen is provided below the first air conveying chute discharge port, an intermediate bin, a rotary feeder, an automatic closed feeder, an eight-mouth rotary packaging machine and a packaging machine ash hopper are provided below the vibrating screen in sequence, and a manual spiral gate is provided at the bottom of the intermediate bin; a second dust collector is provided on one side above the vibrating screen, and the second dust collector is provided on the The dust collector is connected to the inlet of the main dust collector, and the main dust collector is connected to the third centrifugal fan; the eight-mouth rotary packaging machine is connected to the bag receiving conveyor, the bag straightening conveyor and the roller-type bag cleaning machine in sequence, and a bag unloading ash hopper is provided under the bag receiving conveyor and the bag straightening conveyor, and a bag cleaning ash hopper is provided under the bag straightening conveyor and the roller-type bag cleaning machine. A second air conveying chute with a discharge port facing the feed port of the cement packaging return ash elevator is provided below the packaging machine ash hopper, the bag unloading ash hopper, the bag cleaning hopper and the main dust collector; the bag straightening conveyor and the roller-type bag cleaning machine are connected to the cement loader behind them through a belt conveyor, and an electric bag pusher is provided on the belt conveyor. A mobile loading dust collector is provided above the cement loader, and the mobile loading dust collector is connected to the first centrifugal fan, and the first centrifugal fan is connected to the second air conveying chute through the return chute.

[0006] Preferably, a first dust collector is provided at the top of the finished cement conveying chute and the top of the cement bulk warehouse. The first dust collector is connected to the dust collecting fan through a dust collecting pipe. An axial flow fan is provided on the top of the dust collecting fan, and a muffler is provided at the exhaust duct outlet of the dust collecting fan.

[0007] Preferably, the first dust collector, the second dust collector and the main dust collector are all connected to the air compressor through a compressed air pipeline.

[0008] Preferably, sound insulation felt is bonded inside the air compressor room where the air compressor is placed and in the gaps.

[0009] Preferably, a second centrifugal fan is provided at the feed inlet of the second air delivery chute.

[0010] Preferably, the third centrifugal fan is placed in the first noise reduction and sound insulation room, and the cement loader is placed in the second noise reduction and sound insulation room.

[0011] Preferably, an electric push rod is provided on the first air delivery chute.

[0012] Preferably, the dust collecting fan is a variable frequency centrifugal fan.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The cement packaging system provided by the present invention is provided with a first air conveying chute with a feed port facing the finished cement elevator at the discharge port of the finished cement elevator, and a diversion conversion valve is provided at the feed port of the first air conveying chute, which effectively solves the problem of simultaneous delivery of bagged and bulk cement, and has a high equipment utilization rate.

[0015] 2. This cement packaging system is equipped with a flow meter at the exit of the bulk cement depot. Through the one-button weighing and metering system, the purpose of weighing according to the amount loaded is achieved. Cement loading is completed in one go, which greatly improves loading efficiency. The error range of unloading weighing is within 200kg.

[0016] 3. After the cement packaging system was put into operation, energy consumption for cement packaging was reduced to 2.04 kWh / ton, saving 200,000 kWh of electricity annually. Cement packaging and shipment reached 2,600 tons / day, far exceeding the designed packaging capacity of 1,600 tons / day. The packaging and shipment volume reached 160 tons / hour, far exceeding the existing packaging and shipment volume of 110 tons / hour. Bulk cement loading time was reduced to less than 10 minutes.

[0017] 4. The cement packaging system provided by the present invention arranges a first dust collector at the outlet of the finished cement conveying chute and the top of the cement bulk warehouse, and arranges a second dust collector above the vibrating screen, so as to centrally collect the dust generated during the lifting and packaging process, thereby eliminating the high-energy-consuming fans of traditional high-altitude dust collection, controlling dust emissions to meet national environmental protection requirements, eliminating the safety hazards of unorganized dust, reducing equipment operating energy consumption, and eliminating high-altitude noise.

[0018] 5. This cement packaging system connects all primary dust collectors in parallel through dust collection ducts, which are then driven by a single dust collection fan. This prevents noise diffusion from the dust collection fan and resonance caused by its installation on a suspended steel platform. This eliminates excessive noise levels from high-altitude operation while also reducing motor energy consumption. Furthermore, the cement loader is housed in a secondary, soundproofed room, and the primary dust collector's third centrifugal fan is housed in the primary, soundproofed room. Soundproofing felt is bonded to the door of the air compressor room, further achieving energy savings and noise reduction through this multi-faceted soundproofing approach.

[0019] 6. The dust collecting fan of this cement packaging system is located on the ground, which is convenient for maintenance and reduces the difficulty of maintenance and manpower loss. A muffler is installed on the exhaust duct of the dust collecting fan to reduce the noise generated by the exhaust duct; an axial flow fan is installed on the top of the noise reduction and sound insulation room to ventilate and exchange heat in the noise reduction and sound insulation room, avoiding the normal operation of the dust collecting fan and motor affected by the high temperature inside the noise reduction and sound insulation room.

[0020] 7. The dust collecting fan of this cement packaging system adopts variable frequency centrifugal fan. By controlling the motor speed, the output air volume and pressure of the dust collecting fan can be accurately adjusted, which not only reduces energy consumption, but also controls the air volume according to actual needs and improves the overall operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the cement packaging system of the present invention;

[0022] In the figure: 1- finished cement elevator; 2- first air conveying chute; 3- vibrating screen; 4- intermediate silo; 5- manual screw gate; 6- rotary feeder; 7- automatic closed feeder; 8- eight-mouth rotary packaging machine; 9- packaging machine ash hopper; 10- second air conveying chute; 11- bag receiving conveyor; 12- bag conveyor; 13- bag unloading ash hopper; 14- bag cleaning ash hopper; 15- second centrifugal fan; 16- cement packaging ash return elevator; 17- electric push rod; 18- cement bulk silo; 19- flow meter; 20- first dust collector; 21- dust collector Pipeline; 22-dust collecting fan; 23-axial flow fan; 24-muffler; 25-second dust collector; 26-main dust collector; 27-first noise reduction and soundproof room; 28-return material chute; 29-second noise reduction and soundproof room; 30-mobile loading dust collector; 31-first centrifugal fan; 32-cement conveying chute; 33-compressed air pipeline; 34-air compressor; 35-cement loader; 36-diversion switching valve; 37-roller type bag cleaning machine; 38-belt conveyor; 39-electric bag pusher; 40-weight hammer flap air lock ash unloading valve; 41-third centrifugal fan. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] In the present invention, the specifications of the finished cement elevator 1 are TGD400×23980mm; the specifications of the first air conveying chute 2 are XZ400×15517mm, with a slope of 5°; the model of the vibrating screen 3 is YDS-120; the specifications of the intermediate bin 4 are 2500×2500×4944mm; the specifications of the manual spiral gate 5 are 400×400mm; the specifications of the rotary feeder 6 are 400×400mm; the specifications of the automatic closed feeder 7 are 100×100mm; the specifications of the rotary ... The throughput capacity is 120t / h; the model of the eight-mouth rotary packaging machine 8 is BHYW-8; the model of the packaging machine ash hopper 9 is BBHYW-01; the specifications of the second air conveying chute 10 are XZ250×12200mm, with a slope of 6°; the model of the bag receiving conveyor 11 is XYJB-800; the model of the bag conveyor 12 is XYZB-800; the model of the second centrifugal fan 15 is XQI.No.5.4A; the cement packaging return ash elevator The specifications of the machine 16 are NE50×20240mm; the model of the flow meter 19 is FB-CCM; the model of the first dust collector 20 is EMC-112 / A; the model of the dust collecting fan 22 is 9-19 No.10D; the model of the muffler 24 is CF-800; the model of the second dust collector 25 is EMC-112 / A; the specifications of the main dust collector 26 are LPM5C-460; the model of the first centrifugal fan 31 is 9-19 No. 5A; the model of the cement loader 35 is XYD100 / 650 / 10000; the specification of the diversion valve 36 is DN250; the model of the roller-type bag remover 37 is XYGDQ-800; the model of the belt conveyor 38 is TD75 flat, and the model of the electric bag pusher 39 is XYTBJ-Y-B800; the model of the heavy hammer flap lock air ash unloading valve 40 is ZESX-I (single-layer single-door); the model of the third centrifugal fan 41 is 1350 SI BB24.

[0025] like Figure 1As shown, the present invention is a cement packaging system, which includes a finished cement conveying chute 32, the discharge port of the finished cement conveying chute 32 is communicated with the feed ports of two finished cement elevators 1, and a first air conveying chute 2 with a feed port facing the finished cement elevator 1 is provided below the discharge port of the finished cement elevator 1. A diversion conversion valve 36 is provided at the feed port of the first air conveying chute 2, which can be flexibly converted according to the demand for bagged and bulk cement, solving the problem of simultaneous delivery of bagged and bulk cement. An electric push rod 17 is provided on the first air conveying chute 2 for auxiliary feeding, and a cement bulk warehouse 18 is provided below the first air conveying chute 2. , a flow metering scale 19 is provided at the outlet of the cement bulk warehouse 18, and the purpose of weighing how much is loaded is achieved through a one-button weighing and metering system; the discharge port of the first air conveying chute 2 corresponds to the discharge port of the cement packaging return ash elevator 16, and a vibrating screen 3 is provided below the discharge port of the first air conveying chute 2. An intermediate bin 4, a rotary feeder 6, an automatic closed feeder 7, an eight-mouth rotary packaging machine 8 and a packaging machine ash hopper 9 are provided below the vibrating screen 3 in sequence, and a manual spiral gate 5 is provided at the bottom of the intermediate bin 4; a second dust collector 25 is provided on one side above the vibrating screen 3, and the second dust collector 25 is communicated with the inlet of the main dust collector 26, and the main dust collector 26 is connected to The third centrifugal fan 41 is connected, and the third centrifugal fan 41 is placed in the first noise reduction and soundproof room 27; the eight-mouth rotary packaging machine 8 is connected with the bag receiving conveyor 11, the bag conveyor 12 and the roller-type bag cleaning machine 37 in sequence through a belt, and a bag unloading ash hopper 13 is provided below the bag receiving conveyor 11 and the bag conveyor 12, and a bag cleaning ash hopper 14 is provided below the bag conveyor 12 and the roller-type bag cleaning machine 37. A second air conveying chute 10 with a discharge port facing the feed port of the cement packaging return ash elevator 16 is provided below the packaging machine ash hopper 9, the bag unloading ash hopper 13, the bag cleaning ash hopper 14 and the main dust collector 26, and the packaging machine ash hopper 9, the bag unloading ash hopper 13, the bag cleaning ash hopper 14 and the main dust collector 26. A heavy hammer flap air-locking ash discharge valve 40 is provided at the bottom of the ash collecting hopper 13 and the bag cleaning ash collecting hopper 14, and a second centrifugal fan 15 is provided at the feed port of the second air conveying chute 10; the main bag conveyor 12 and the roller bag cleaning machine 37 are connected to the cement loader 35 behind them through a belt conveyor 38, and the belt conveyor 38 is provided with an electric bag pusher 39. The cement loader 35 is placed in a second noise reduction and soundproof room 29, and a mobile loading dust collector 30 is provided above the cement loader 35. The mobile loading dust collector 30 is connected to the first centrifugal fan 31, and the first centrifugal fan 31 is connected to the second air conveying chute 10 through the return chute 28.The first dust collector 20 is installed at the outlet of the finished cement conveying chute 32 and at the top of the cement bulk storage 18. The first dust collector 20 is connected to the dust collecting fan 22 through a dust collecting duct 21. An axial flow fan 23 is installed at the top of the dust collecting fan 22, and a muffler 24 is installed at the exhaust pipe outlet of the dust collecting fan 22. The dust collecting fan 22 is a variable frequency centrifugal fan. By controlling the motor speed, the output air volume and pressure of the dust collecting fan 22 can be precisely adjusted. This not only reduces energy consumption, but also controls the air volume according to actual needs, thereby improving overall operating efficiency. The first dust collector 20, the second dust collector 25, and the main dust collector 26 are all connected to the air compressor 34 through a compressed air duct 33. Manual airflow control valves are installed at the branches of the compressed air duct 33. Sound insulation felt is bonded to the air compressor room and gaps where the air compressor 34 is placed.

[0026] When bulk cement is packaged, the finished cement is fed into the feed port of the finished cement elevator 1 through the finished cement delivery chute 32, and then delivered to the first air delivery chute 2 after being lifted. The diversion valve 36 delivers the bulk cement into the cement bulk warehouse 18 according to the bulk cement packaging requirements. During the packaging process, the flow meter 19 measures in real time to achieve the purpose of weighing the amount loaded.

[0027] When bagged cement is packaged, the finished cement is fed into the feed port of the finished cement elevator 1 through the finished cement conveying chute 32, and then fed to the first air conveying chute 2 after being lifted. The diversion switching valve 36 feeds the cement into the vibrating screen 3 according to the requirements of bagged cement packaging, and then passes through the intermediate bin 4, manual spiral gate 5, rotary feeder 6, automatic closed feeder 7 and eight-mouth rotary packaging machine 8 in sequence, and is then fed into the bag receiving conveyor 11 and the bag conveyor 12 via a belt, and finally fed into the cement loader 35 for loading the finished bagged cement.

[0028] During the cement packaging process, the residual cement collected by the packaging machine ash hopper 9, bag unloading ash hopper 13, bag cleaning ash hopper 14, main dust collector 26 and roller bag cleaning machine 37 is sent to the feeding port of the cement packaging return ash elevator 16 through the second air conveying chute 10. After being lifted by the cement packaging return ash elevator 16, it is sent to the vibrating screen 3 for screening and then reused to avoid waste.

[0029] During the loading process, the dust collecting fan 22 and the main dust collector 26 are started to control the first dust collector 20 and the second dust collector 25 to collect dust in real time, and then discharge it through the exhaust duct, so as to centrally collect the dust generated during the lifting and packaging process, control the dust emission to meet the national environmental protection requirements, and eliminate the safety hazards of unorganized dust.

[0030] To reduce noise, a silencer 24 is installed on the exhaust pipe of the dust collecting fan 22, and the cement loader 35 is placed in the second noise reduction and soundproof room 29, the third centrifugal fan 31 of the main dust collector 26 is placed in the first noise reduction and soundproof room 27, and sound insulation felt is glued to the door of the air compressor room where the air compressor 34 is placed. The multi-channel sound insulation further achieves the purpose of energy saving and noise reduction.

Claims

1. A cement packaging system, characterized by: The invention comprises a finished cement conveying chute (32), the discharge port of the finished cement conveying chute (32) is communicated with the feed port of the finished cement elevator (1), a first air conveying chute (2) with a feed port facing the finished cement elevator (1) is provided below the discharge port of the finished cement elevator (1), an electric push rod (17) is provided on the first air conveying chute (2), a diversion switching valve (36) is provided at the feed port of the first air conveying chute (2), a cement bulk storage (18) is provided below the first air conveying chute (2), and a flow meter (19) is provided at the outlet of the cement bulk storage (18); the first air conveying chute (2) is provided with a plurality of air conveying means, wherein the first air conveying means comprises ... The discharge port of the delivery chute (2) corresponds to the discharge port of the cement packaging return ash elevator (16); a vibrating screen (3) is provided below the discharge port of the first air delivery chute (2); an intermediate bin (4), a rotary feeder (6), an automatic closed feeder (7), an eight-mouth rotary packaging machine (8) and a packaging machine ash hopper (9) are provided below the vibrating screen (3); a manual spiral gate (5) is provided at the bottom of the intermediate bin (4); a second dust collector (25) is provided on one side above the vibrating screen (3); the second dust collector (25) is communicated with the inlet of the main dust collector (26), and the main dust collector (26) is communicated with the third centrifugal The eight-mouth rotary packaging machine (8) is connected to the bag receiving conveyor (11), the bag conveyor (12) and the roller-type bag cleaning machine (37) in sequence. A bag unloading ash hopper (13) is provided below the bag receiving conveyor (11) and the bag conveyor (12). A bag cleaning ash hopper (14) is provided below the bag conveyor (12) and the roller-type bag cleaning machine (37). A second air conveying inclined plate with a discharge port facing the feed port of the cement packaging return ash elevator (16) is provided below the packaging machine ash hopper (9), the bag unloading ash hopper (13), the bag cleaning ash hopper (14) and the main dust collector (26). A second centrifugal fan (15) is provided at the feed port of the second air conveying chute (10); the front bag conveyor (12) and the roller bag cleaning machine (37) are connected to the cement loader (35) behind them through a belt conveyor (38); an electric bag pusher (39) is provided on the belt conveyor (38); a mobile loading dust collector (30) is provided above the cement loader (35); the mobile loading dust collector (30) is communicated with the first centrifugal fan (31), and the first centrifugal fan (31) is communicated with the second air conveying chute (10) through a return chute (28).

2. A cement packaging system according to claim 1, characterized in that: A first dust collector (20) is provided at the top of the finished cement conveying chute (32) and the top of the cement bulk storage (18). The first dust collector (20) is connected to a dust collecting fan (22) through a dust collecting pipe (21). An axial flow fan (23) is provided at the top of the dust collecting fan (22). A muffler (24) is provided at the outlet of the exhaust duct of the dust collecting fan (22).

3. A cement packaging system according to claim 2, characterized in that: The first dust collector (20), the second dust collector (25) and the main dust collector (26) are all connected to an air compressor (34) via a compressed air pipeline (33).

4. A cement packaging system according to claim 3, characterized in that: Sound insulation felt is bonded inside the air compressor room where the air compressor (34) is placed and at the gaps.

5. A cement packaging system according to claim 4, characterized in that: The third centrifugal fan (41) is placed in the first noise reduction and sound insulation room (27), and the cement loader (35) is placed in the second noise reduction and sound insulation room (29).

6. A cement packaging system according to claim 2, characterized in that: The dust collecting fan (22) is a variable frequency centrifugal fan.

Images