CN2082639U

CN2082639U - Roll type pulverizer for boiler

Info

Publication number: CN2082639U
Application number: CN 90206592
Authority: CN
Inventors: 傅源潮; 秦建设; 王录臣
Original assignee: JIAOZUO COAL MINE EQUIPMENTS FACTORY
Current assignee: JIAOZUO COAL MINE EQUIPMENTS FACTORY
Priority date: 1990-05-12
Filing date: 1990-05-12
Publication date: 1991-08-14

Abstract

The utility model discloses a roll type pulverizer for boilers, which belongs to the field of mechanical manufacture. A main machine is composed of a frame body (1), a motor (2), a reducer (3), a hopper, a protecting cover (4) of the hopper, a main roller (5), an auxiliary roller (6), a double driving tooth (7), etc. The utility model is characterized in that a working part is provided with a pair of bar-shaped rollers which keep a gap and rotate relative to each other. The utility model is mainly used for pulverizing the slag in an automatic slag removal system of a power boiler. The utility model is automatically controlled to realize automatic reverse rotation of a jamming case, and then restore the jamming case to a normal operation state.

Description

Roll type pulverizer for boiler

The utility model relates to a kind of machine of disintegrating slag link of power boiler automation dreg removing system.Roller-type boiler slag crusher belongs to mechanical manufacturing field.

Present boiler slag crusher, model specification is a lot, but they exist the bulk slag to get stuck on different Cheng Du; Key is incomplete for the robot control system(RCS) of machinery equipment own; Especially machine can not adapt to the requirement of long-term operation under adverse circumstances, causes and is forced to shutdown maintenance, and the phenomenon that influences the automated system operate as normal is more obvious.

In view of the shortcoming of above-mentioned existence, the purpose of this utility model is to provide a kind of bulk slag that is not prone to get stuck, or occurs getting stuck and can handle automatically, and can adapt to the roller-type boiler slag crusher of suitable long-term operation under adverse circumstances.The fragmentation that also can be used as other article of non-boiler disintegrating slag is used.

The utility model is achieved in that

1, the realization of mechanical part:

Each parts of roller-type boiler slag crusher are assembled into integral body by support body (1), transmission of power is by motor (2), reductor (3) drives king roller (5) and rotates, and drives secondary roll (6) by duplex travelling gear (7) again, makes the relative de-rotation of main secondary roll.It is characterised in that working portion has a pair of bar shaped roll gap and relative de-rotation that exists.When slag passes through hopper (4), after importing the working position of machine continuously, under the effect of mechanical force, slag by two continuous phases to the grating of nibbling of the gap bar shaped roll of de-rotation, and moving by the not stall of roll from being about to disintegrating slag from the discharge of machine bottom, finish whole process.

2, electrical equipment and realization of automatic control:

Local circuit is made up of two parts, isolating switch QS, and fuse FU1, current transformer TA1, TA2, electrothermal relay K1, K2, A.C. contactor main contact KM1, KM2 form main circuit, and remainder is formed control circuit.

This machine has three kinds of protective devices, (a) fuse FU1, (b) electrothermal relay K1, K2, (c) row hinders the rotating device automatically, sends into when the bulk slag to occur in the machine getting stuck, and resistance increases severely, current of electric increases rapidly, current transformer TA1, TA2 pass to electric current relay LJ1, LJ2 with the current signal that increases and reach setting valve, and electric current relay will disconnect A.C. contactor KM1, and motor shuts down; Circuit-closing contacts KT1-1 makes time relay KT2, KT3 energising simultaneously, and the time relay is controlled automatically according to the adjustment time and finished counter-rotating row barrier task, recovers operate as normal then automatically.

A, send: the QS that closes a switch, by fuse FU1, transformer TC, fuse FU2, full machine main circuit and control circuit have.

B, start and normal operation: press operation button SB1, control loop ac contactor coil KM1, normally closed contact KT1-2, KT3-1, KM2-1, button SB1, SB2, normally closed contact K1, K2 forms the loop, A.C. contactor KM1 energising, A.C. contactor main contact KM1 closure.Motor just changes, simultaneously, the closed self-insurance of normal opened contact KM1-1, normally closed contact KM1-2 disconnects, A.C. contactor KM2 outage, A.C. contactor KM1 and KM2 form locking, normal opened contact KM1-3 closure, green indicating lamp HL1 is bright, and the expression machine normally moves.

C, the auto-reverse control principle of abnormal conditions: get stuck when the bulk slag occurring, machine burden increases, and current of electric increases rapidly, current transformer TA1, TA2 signal are passed to adjust certain interval electric current relay LJ1, LJ2, make its action, often meet LJ1-1 battle, the LJ2-1 closure, the time relay KT1 adhesive of switching on, contact KT1-1 moment closure is time relay KT2, and preparation has been done in KT3 A.C. contactor KM2 adhesive; Normal opened contact KT1-2 disconnects, A.C. contactor KM1 outage, and main contact KM1 disconnects, and machine shuts down.In the time of A.C. contactor KM1 outage; Current transformer TA1, TA2 blackout, electric current relay LJ1, LJ2 time relay KT1 restPose; Break KM1-3 green light extinguishes; Contact KM1-1 disconnects, contact KM1-2 closure, and A.C. contactor KM2 time relay KT2, KT3 be by contact KM1-2, KT1-1 button SB2 contact K1, the K2 adhesive of switch on, main contact KM2 closure, motor reverses; Contact KM2-1 disconnects, and makes the mutual locking of A.C. contactor KM2 and KM1; Contact KM2-2 closure, the bright indication machine counter-rotating of red light HL2; Contact KT2-1 closure (for motor recovers just transferring to preparation); The instantaneous disconnection of contact KT3-1.

D, normal operation logic is recovered in the back of fixing a breakdown: after counter-rotating is fixed a breakdown, contact KT1-1 disconnections in about 10 seconds of delay time, time relay KT2, KT3 A.C. contactor KM2 outage, main contact KM2 disconnection, motor reverses and stops; Contact KM2-1 closure is removed A.C. contactor KM2, KM1 locking; Since time relay KT3 outage, contact KT3-1, and time-delay 2-3 closure second is connected A.C. contactor KM1 machine and is begun normal operation; Because time relay KT2 outage, contact KT2-1 time-delay 4-5 disconnects second, path is provided for A.C. contactor KM1 adhesive, and motor normally moves; Contact KM2-2 disconnects, and red light HL2 extinguishes.

E, when the motor overload operation, electrothermal relay K1 or K2 action, control contact K1 or K2 disconnect, and motor shuts down.

F, shut down: press stop button SB2, A.C. contactor KM1 or KM2 outage, main contact KM1 or KM2 disconnect, and motor shuts down.

G, the examination counter-rotating: put the SB3 that touches the button, the people is relay K T1 enforcement examination counter-rotating turn-on time.

Contrast Figure of description below, the utility model is narrated.

Accompanying drawing 1: be roller-type boiler slag crusher main frame schematic diagram, (1) support body among the figure, (2) motor, (3) reductor, (4) hopper, (5) king roller, (6) secondary roll, (7) duplex travelling gear, needing the main secondary roll of explanation is working portion of the present utility model, import between the main secondary roll of relative reverse continuously by hopper when slag after, under the effect of mechanical force, by the grating of being nibbled, and moving, be about to disintegrating slag certainly discharge from the machine bottom by the not stall of roll.The duplex travelling gear is that a pair of modulus is identical, the gear that the number of teeth equates, and effect is to guarantee main secondary roll clearance meshing, and relative de-rotation.

Accompanying drawing 2: be king roller (5), the meshing relation figure of secondary roll (6), arrow is the roll rotation direction, represents the shared angle of each bar tooth, main secondary roll has the diameter that is equal to, the bar tooth number of teeth that is equal to, bar tooth section is trapezoid belt garden arc angle shape or garden arcuation.

Accompanying drawing 3: be the electrical equipment control schematic diagram.

Connection features is between each electronic devices and components of circuit part:

Motor by series connection A.C. contactor main contact KM1 or with the main contact KM2 of its locking, electrothermal relay K1, K2 current transformer TA1, TA2, fuse FU1, isolating switch QS and AC power are joined and are main circuit;

Electric current relay LJ1, LJ2 and current transformer TA1, TA2 are connected in parallel; The elementary lower end that is connected on main circuit fuse FU1 of control transformer TC, secondary series connection fuse FU2 forms the A of control circuit, the B end; Button SB3, SB2 contact K1, K2 series connection and contact LJ1-1 are connected with time relay KT1 after the LJ2-1 parallel connection and are connected to A, the B two ends; Contact KM1-1, KT2-1 button SB1, back in parallel is connected to A, B two ends with A.C. contactor KM1, contact KT1-2, KT3-1, KM2-1 button SB2 contact K1, K2 after connecting; Connect and be connected to A, B two ends with contact KM1-2, KT1-1 button SB2 contact K1, K2 after exchanging tentaculum KM2 time relay KT2, KT3 parallel connection; Indicator lamp HL1, contact KM1-3 series connection is connected to A, B two ends; Indicator lamp HL2 contact KM2-2 series connection is connected to A, B two ends, the whole control circuit of forming.

It is tight that the utility model mechanical part has structure.Firmly, working method is reasonable, has adapted to the requirement of long-term operation under adverse circumstances, is used with electrical apparatus control system in addition, has solved the problem that the bulk slag gets stuck, and has perfected the control system of this machine.

Claims

1, a kind of motor (2), reductor (3), king roller (5), secondary roll (6), duplex travelling gear (7), main circuit isolating switch QS, fuse FU1, current transformer TA1, TA2, electrothermal relay K1, K2, the roller-type boiler slag crusher that A.C. contactor main contact KM1, KM2 are connected in series and form is characterized in that:

A. working portion has a pair of stripe shape roll;

B. king roller (5), there is clearance meshing in secondary roll (6), and de-rotation relatively;

C. king roller (5) and secondary roll (6) clearance meshing and de-rotation mutually realize by duplicate gear (7);

D. control circuit is mainly by electric current relay LJ1, LJ2, A.C. contactor KM1, KM2, and time relay KT1, KT2, KT3 are connected in parallel.

2, roller-type boiler slag crusher as claimed in claim 1 is characterized in that, king roller is made up of the diameter that is equal to, the identical number of teeth with secondary roll.

3, roller-type boiler slag crusher as claimed in claim 2 is characterized in that the tooth section configuration is the trapezoid belt arc chord angle.

4, as roller-type boiler slag crusher as described in the claim 3, it is characterized in that the tooth section configuration also can be circular-arc.

5, roller-type boiler slag crusher as claimed in claim 1, it is characterized in that: by electric current relay LJ1, LJ2 and current transformer TA1, TA2 is connected in parallel; The elementary lower end that is connected on main circuit fuse FU1 of control transformer TC, secondary series connection fuse FU2 forms the A of control circuit, the B end; Connect with time relay KT1 after button SB3, SB2 contact K1, K2 series connection and contact LJ1-1, the LJ2-1 parallel connection and be connected to A, B two ends; Contact KM1-1, KT2-1 button SB1, back in parallel is connected to A, B two ends with A.C. contactor KM1 contact KT1-2, KT3-1, KM2-1 button SB2 contact K1, K2 after connecting; Connect and be connected to A, B two ends with contact KM1-2, KT1-1 button SB2 contact K1, K2 after A.C. contactor KM2 time relay KT2, the KT3 parallel connection; Indicator lamp HL1, contact KM1-3 series connection is connected to A, B two ends; Indicator lamp HL2 contact KM2-2 series connection is connected to A, B two ends.