Daily output 400m³particleboard continuous press production line process overview - Blog

Particleboard continuous press production line process flow Process overview

I. Overview

The raw materials of the particleboard production line are pine, birch,

etc., mainly prepared by chipping and planing process. The particleboard is

uniformly transported to the high efficiency and energy saving single-channel

dryer through the special wet particleboard bin, and then screened by the super screen and air separator. Through the surface core layer shavings flowmeter

respectively measure, control the surface core layer of dry shavings and the

amount of sizing, sizing shavings by belt conveyor conveyor respectively to the table, the core layer laying machine paved with even and flat slab. After

prepressing by special prepressing machine for particleboard, the forming slab is transported to hot pressing machine. The rough slab is sent to star drying

machine by conveyor, and then sent to crossbar cutting machine for cutting edge by conveyor. After cutting, the semi-finished particleboard is transported to

the semi-finished stock by forklift truck. Store for 48 hours, sanded and then packaged and stored in storage.

Ⅱ. Main economic and technical indicators

1. Product specifications

Variety: homogeneous structure particleboard Mother board Size:

Wool board length: 4100-5730mm

Width of rough board: 2070mm (size after pressing, before cutting saw)

Finished board size: 2070mmx2800mm, 1830mmx2750mm

Thickness of clean board: 9.0-30.0mm

Thickness of finished board: 9.5mm -- 31mm

Finished board density: 610 ~ 720kg/m³

2. Production mode: continuous hot press production line

3. Working system

The annual working day is 300 days The daily work schedule is 3 shifts

The effective working time of the day is 22.5 hours

4. Production capacity: 4000m³ per day Based on the following parameters:

Press process length 21m Board width 2070mm

Minimum temperature of one hot oil cycle + 280℃

The maximum temperature of the secondary hot oil cycle is + 265℃ Temperature of slab at the entrance of press

Minimum +35℃ Maximum +50℃ Daily working hours 22.5h

Maximum production speed 800mm/s

Finished board thickness mm	Sanding allowance mm	Density range kg/m³	Hot pressing factor s/mm	Production speed mm/s	Production capacity m³/d
10	0.5	610-720	8.5	240	350
12	0.5	610-720	8.0	210	370
16	0.5	610-720	7.2	176	410
18	0.5	610-720	7.5	151	400
25	0.5	610-720	7.7	100	388
30	0.6	610-720	8.0	87	400

5.the total installed power of the plant (approximate value)

5.1 Wood chipping and planing 2000KW

5.2 Shavings drying/screening 1350KW

5.3 Gluing and sizing 300KW

5.4 Paving and press production line 2000KW

5.5 Edging/cooling/stacking 300KW

5.6 Stacking and chopping storage system 85KW

5.7 Sanding light/gauge saw 1250KW

5.8 Auxiliary equipment 300KW

5.9 Electric control equipment 10KW

5.10 Energy plant 900KW

5.11 Total installed power 8495KW

5.12 Emergency power supply 430KVA

6. Basic conditions of production

Wood consumption: (moisture content 60 ~ 80%) about 500t/d

Wood chip raw materials: birch, pine, etc Chemical raw materials consumption:

Urea formaldehyde resin glue (65% solid) 50t/d

Ammonium chloride (powder) 3t/d

water for production 10 ~ 20t/h

Compressed air for production 50m³/min 0.6MPa

7. Product quality

According to the national standard GB/T4897-2015 Table 4(Type P2) "under the drying conditions of PB sheet

Quality requirements:

Table 4 Other physical and mechanical properties of furniture particleboard used in the dry state
项目	单位	规格限(μU,μL)
		基本厚度范围 mm
		≤6	>6～13	>13～20	>20～25	>25～34	>34
Static bending strength (MOR)	MPa	12.0	11.0	11.0	10.5	9.5	7.0
Modulus of elasticity (MOE)	MPa	1900	1800	1600	1500	1350	1050
Internal bonding strength	MPa	0.45	0.40	0.35	0.30	0.25	0.20
Surface bonding strength	MPa	0.8	0.8	0.8	0.8	0.8	0.8
2h Water absorption thickness expansion rate	%	8.0

info-1-1 8. Hydraulic oil

8.1 Hydraulic oil model L-HM46, pollution degree is less than 20mg/100ml

8.2 Hydraulic oil must be changed every two months filter (L-HM46 hydraulic oil change mark see the following table) L-HM46 hydraulic oil change mark

(SH/T0599-19940)

Item		Oil change signs	Test method
Kinematic viscosity change rate /% at 40℃	Exceeding	+15 or -10	Conforms to GB/T265
Moisture /%	Greater than	0.1	Conforms to GB/T260
Chroma increased (compared to new oil)/ number	Greater than	2	Conforms to GB/T6540
Acid number Reduced /% Or value added /(mgKOH/g)	over Greater than	35 0.4	Conforms to GB/T264

Note: The technical condition of the equipment is normal, and the new oil

should be replaced when one of the indicators in the hydraulic oil reaches the oil change index.

8.3 For the proportional valve hydraulic system using L-HM hydraulic oil, the pollution degree (weight method) is greater than 20mg/100mL days should be

replaced.

9. Discharge

The production line is designed according to the following given emission

index, if the buyer requires a lower emission index, it should be equipped with additional filtration or purification equipment. Such as additional cyclone

separator, scrubber or electrostatic precipitator. All exhaust dust removal

equipment, filtration or purification equipment are not included in the scope of supply of the Seller.

9.1 Press exhaust

Press exhaust is discharged after treatment:

Exhaust volume about 60,000 m³/h

The exhaust temperature is about 70 ºC

9.2 Noise

There are many noise sources on the production line, some of which may emit more than 85 (dBA) noise:

chipper

Slicing machine

sander

Hydraulic pump

saw

sander

Air blower

Noise treatment equipment not included in Seller's scope of supply. The Seller will provide detailed parameters of noise producing areas, noise treatment

measures and suggestions during the project implementation stage or in the

Buyer's scope of supply. The personnel working in the noise source area should wear ear muffs for protection, or adopt other sound insulation measures.

10. Staff the area

The staffing is proposed according to the conventional configuration of similar production lines in China. The buyer can make corresponding adjustment

according to local conditions or its own experience.

Section or location	Conditions of employment	First shift	Second shift	Third shift	Total
Stock preparation	S	6	6	6	18
Dry separation	S	4	4	4	12
Sizing and sizing	BS	2	2	2	6
Paving/hot press line	S	4	4	4	12
Post processing	BS	2	2	2	6
Sand saw wire packing	FS	10	10	10	30
Forklift driver	S	2	2	2	6
laboratory	S	2	2	2	6
Sharpen knives/saws	S	2	2	-	4
mechanic	S	2	2	2	6
electrician	S	2	2	2	6
fixer	S	1	1	0	2
Total		39	39	39	117

Instructions:

1.BS semi-skilled workers,S skilled workers,FS unskilled workers. Factory production managers, sales staff and support staff, such as log dressers, cleaners, etc., are not recommended.

The production shift of each section is arranged according to the routine, the main production line adopts the continuous production of three shifts per day, and the auxiliary section adopts one or two shifts according to the need. The buyer can also configure the production of the auxiliary section according to the actual situation.

Ⅲ.particleboard production line electrical automatic control system

Our company through the particleboard complete production line of more than ten years of research and summary, absorb foreign equipment advanced

technology, developed a set of both stable, reliable and economical and practical full automatic control system. The system has been applied in a number of production lines at home and abroad and achieved good results. It has a complete control system for the online product quality and output of the production line, which greatly reduces the labor and reduces the energy consumption of the equipment through the optimization of the automatic control system.

The control system legend of the general control room is as follows

2. Particleboard automatic control system advantages

a, the control system is mainly the use of decentralized centralized control system, is a set of control technology, communication

technology and one, is the world's most advanced computing, PLC technology. Through software programming and HMI (man-machine

operation interface) control MCC, PLC control cabinet output drive field motor motor, frequency converter, regulating valve, solenoid valve and other executive devices, to achieve automatic control and regulation of the system, so as to meet the needs of various production processes. HMI interface adopts industrial control PC for real-time monitoring, the use of multimedia technology, with 3D animation, full Chinese display, sound and light prompt and other colorful human-machine interaction interface, can intuitively display the actual situation of particleboard production system, the real-time operation data are dynamically saved and displayed on the industrial control PC, so that the running status of particleboard production line is clear at a glance. The operation is more intuitive and simple. The system has good interconnection and openness, leaving sufficient upgrade and backup functions, to meet the requirements of IEC61158 and EN50170 standards. Moreover, it has the advantages of safe and reliable operation under harsh working environment and full visual display of the working state of the particleboard production line.

b, Without adding any equipment, it can exchange process data with any section to achieve seamless connection and data can be exported. c, this system has a powerful SQL database, can save a year of equipment operation process curve data and various on-site alarms, very conducive to the process personnel and maintenance personnel to find and analyze the cause of the failure, so that the complex can not see the various parameters simplified, humanized.

d, belt motor, saw, paving head can achieve stepless speed regulation on the operation interface;

e, the three paving machines can automatically adjust the feeding speed and the position of the nozzle according to the material level of the bunker.

f, laying machine according to the speed of the main line and the density of the wool plate automatically adjust the amount of each laying machine.

g, simple automatic fire and explosion-proof control program.

h, through the network cable or optical fiber can achieve remote fixed monitoring and remote fault diagnosis.

3. Composition of the control system

The whole automatic control system is composed of hardware and software parts, mainly including:

a, detection and execution devices

Sensors (temperature, pressure, photoelectric, limit, etc.),

switches, regulating valves, actuators, this part of the device is imported or domestic well-known brand products;

b, drive, equipment:

The main switching electrical components adopt Schneider brand

products, inverter adopts domestic well-known brand Inwitten, the reliability of driving devices and equipment provides the basic

guarantee for the operation of the system;

c, control (including communication) components, equipment

Adopt Siemens S7-1500 PLC CPU, I/O components and Siemens industrial computer, through Profinet bus and Fast Eathnet communication to

form the communication network of the whole control system. The use of Profinet communication technology: its high reliable data

transmission, fast data response, strong anti-interference ability effectively improve the measurement and control accuracy of the

system, make the control system more reliable; Secondly, it saves a lot of control cables (including special cables) for the user,

reduces the comprehensive cost of the system, and also reduces the user's workload of maintenance and repair of the system.

d, TIA programming software and American Intouch configuration software

Through TIA programming software to prepare the entire particleboard production system control program, in order to achieve the system data sampling, logic control, PID control, security interlock, fault output and other functions. The programming adopts modularization mode, the structure is clear. The man-machine interface compiled by Intouch configuration software includes several groups of screen, alarm, real-time curve, historical trend, PID adjustment, data archiving and operation authority of the entire particle board production system. The operator can control the particleboard production system according to different permissions, parameter modification, historical process curve search and system management.