CN209740204U - Special unloading system for ash storehouse and slag storehouse - Google Patents

Abstract

The utility model discloses an ash storehouse and special unloading system of sediment storehouse, including brace table, bulk machine body, built-in cartridge filter, draught fan and local control cabinet and ash falling bucket, built-in cartridge filter fixes at bulk machine body top, and the bulk machine body includes installation base, blanking structure, seal structure, limit structure and full material control structure, and the blanking structure includes fixed inner tube, a plurality of movable inner tubes, discharge head, a plurality of outer wire ropes, a plurality of steel wire discs, gear motor, and the limit structure includes upper limit protection structure and lower limit protection structure; the built-in filter cartridge type dust remover comprises an upper shell, a lower shell, a dust falling pipe, a clean gas outlet, a filtering structure, a back flushing structure and a dust-containing gas inlet; the clean gas outlet is connected with a draught fan through an induced draft pipe, and an air outlet of the draught fan is connected with an exhaust pipe. The utility model discloses the operation is reliable and stable, can satisfy the requirement of unloading of not co-altitude loading grey car, sets for reliable interlocking, degree of automation height between each part.

Description

Special unloading system for ash storehouse and slag storehouse

Technical Field

The utility model relates to an ash storehouse and sediment storehouse are unloaded and are used the device, especially relate to an ash storehouse and special system of unloading of sediment storehouse.

background

The ash and slag formed after coal firing in the thermal power plant can be used as the ingredients for producing cement, hollow bricks and red bricks, and also can be used as the fillers for roads for repairing roads, making roadbeds or paving roads, and having certain use value, so that the power plant can sell ash and slag to obtain considerable economic benefit.

The coal is made to enter the warehouse from the top of the warehouse, and the ash in the ash warehouse is discharged into an ash loading vehicle (ship) at a certain speed by a discharging device at the bottom of the warehouse, so that the device for realizing the function is a dry ash bulk machine. The dry ash bulk machine needs to ensure no ash leakage, flexible lifting of the discharge head, reliable interlocking among all the parts and safe and stable operation in the operation process. An induced draft fan is needed to absorb dust-containing gas from the inside of the telescopic cylinder, so that the inside of the dry ash bulk machine is always in a negative pressure state. The absorbed dust-containing gas is subjected to dust removal and filtration, and can be discharged into the atmosphere after reaching the national pollutant discharge standard, and the built-in filter cartridge type dust remover is special equipment for realizing the function.

The dry ash bulk machine, a matched induced draft fan, a blanking pipe, an exhaust pipe, pipeline accessories and a corresponding control device form a discharging system to complete the task of discharging from the ash warehouse and the slag warehouse. The early unloading device consists of a dust remover and a bulk machine which are independently arranged on a base and are connected with a dust exhaust air pipe through an unloading pipe. The dust collector adopts cloth bags for filtration, the filtration speed is low, and the number of the cloth bags is large and the size is large. In the ash loading process, the discharge head is not tightly contacted with the automobile charging port, and ash is often emitted. The bulk machine has low automation degree and mainly adopts manual operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an operation is reliable and stable, can satisfy the requirement of unloading of the not co-altitude ash charging car, set for reliable interlocking between each part, degree of automation is high, can realize manual and automatic operation, and strong adaptability, structural design is novel, and is reasonable, simple to operate, compact structure, area is little, equipment running cost is low, the equipment consumptive material is few, the whole low in manufacturing cost, filtration efficiency is high, the allowable filter speed is big, long service life, corresponding change cycle length, the air consumption is few, maintain convenient to use, maintenance work load is few, the ash storehouse and the special system of unloading of sediment storehouse that the fault rate is low when moving.

The technical scheme of the utility model: a special discharging system for an ash warehouse and a slag warehouse comprises a supporting table, a bulk machine body, a built-in filter cartridge type filter, an induced draft fan, a local control cabinet and an ash falling hopper, wherein the bulk machine body is arranged on the supporting table, the built-in filter cartridge type filter is fixed at the top of the bulk machine body through a fastener, the bulk machine body comprises an installation base, a blanking structure arranged on the installation base, a sealing structure matched with the blanking structure, a limiting structure and a material full control structure, the blanking structure comprises a fixed inner cylinder, a plurality of movable inner cylinders arranged at the bottom of the fixed inner cylinder, a discharging head positioned below the bottommost movable inner cylinder, a plurality of outer steel wire ropes driving the movable inner cylinders and the discharging head to act, a plurality of steel wire discs driving the outer steel wire ropes and a speed reducing motor driving the steel wire discs to rotate, the fixed inner cylinder is arranged at the lower, the material full-filling control structure comprises an air pump and a material level gauge assembly arranged on the mounting base, a material level gauge contact arranged on the discharging head and a flexible air pipe connected with the air pump and the material level gauge assembly and the material level gauge contact;

The built-in filter cartridge type dust remover comprises an upper shell, a lower shell, a dust falling pipe, a clean gas outlet, a filtering structure, a back flushing structure and a dust-containing gas inlet, wherein the upper shell and the lower shell are connected with each other;

The clean gas outlet is connected with the air inlet of the draught fan through an induced draft pipe, and the air outlet of the draught fan is connected with an exhaust pipe.

The utility model discloses the effect of spacing protection architecture is when the head of unloading is put down and is loaded grey car feed head contact down, closes gear motor, makes the head of unloading stop to fall down, prevents that outer wire rope from running the rope. The lower limit protection device saves manual operation of people, and the positioning is more accurate when the unloading head is lowered.

The upper limiting protection structure has the effects that when the unloading head rises after the unloading is finished, the unloading head stops rising when the unloading head shrinks to the limit position, and the speed reduction motor is prevented from being burnt out due to the overload rotation of the speed reduction motor.

the full-feeding control structure has the function that when the ash loading vehicle is filled with ash, the pneumatic gate valve for feeding in the interlocking discharging system is closed to stop discharging.

Preferably, be equipped with manual push-pull valve between ash falling bucket and the ash falling pipe, be equipped with the wave form expansion joint on the ash falling pipe, wave form expansion joint below is equipped with pneumatic push-pull valve, be equipped with the damper on the induced duct, be connected with at least one DCS remote control equipment on the control cabinet on the spot.

The utility model provides a blanking pipe is carbon steel seamless pipeline, because wearing and tearing are great, the pipeline wall thickness is greater than conventional pipeline for the gas transmission, and the on-the-spot cutting installation of blanking pipe is used for connecting each pipeline annex. In order to avoid wear, the down pipe is installed vertically as much as possible.

The manual gate valve is installed below the ash falling hopper of the ash warehouse and is normally in a normally open state, and when the system fails and the blanking is required to be stopped, the valve is closed and used as a valve for maintenance.

The wave-shaped expansion joint absorbs the heated elongation of the blanking pipe. Because the blanking pipe is at normal temperature during installation, the ash temperature during unloading can reach more than 100 ℃, and the blanking pipe and related parts are damaged due to overlarge stress. The wave-shaped expansion joint is arranged below the manual gate valve.

The pneumatic gate valve is arranged below the wave-shaped expansion joint and is connected with a feeding hole of the built-in filter cylinder type dry ash bulk machine. And the pneumatic gate valve controls the switch of the discharging system. The pneumatic gate valve is interlocked with a discharging head of the built-in filter cartridge type dry ash bulk machine, and when the discharging head is put down in place, the pneumatic gate valve can be opened for discharging; and when the discharging is finished, the built-in filter cylinder type dry ash bulk machine sends a full discharging signal, and the pneumatic gate valve is closed to stop discharging.

The built-in filter cartridge type dry ash bulk machine is assembled by a built-in filter cartridge type dust remover and a dry ash bulk machine. The materials fall down along the blanking pipe, enter the blanking pipe in the built-in filter cylinder type dust remover and then enter the ash loading vehicle from the discharging head at the bottom along each inner cylinder of the dry ash bulk machine. The dust-containing gas enters the built-in cartridge type dust collector upwards through the space of the inner cylinder and the telescopic dust cover of the dry ash bulk machine for filtering, the clean gas filtered by the filter meets the pollutant emission requirement specified by the state, the clean gas is discharged from the built-in cartridge type dust collector and is discharged into the atmosphere through the induced draft fan.

The induced draft fan is arranged on one side of the built-in filter cartridge type dust remover and provides power for the built-in filter cartridge type dust remover to filter dust-containing gas. The draught fan enables the interior of the dust cover of the dry ash bulk machine to be always in a micro negative pressure state, and the phenomenon that ash is emitted at the relevant position of the dust cover when unloading is prevented.

The induced draft tube is arranged between the built-in filter cartridge type dust remover and the induced draft fan and used for conveying the filtered clean gas. The air damper is arranged on the induced draft tube and used for adjusting the induced draft volume: when the induced air volume is too large, the dust cover is sucked and held, the filter load of the built-in filter cartridge type dust remover is too large, and the air volume can be reduced through the air damper; when the induced air quantity is too small, the phenomenon of ash emission can occur, and the air quantity needs to be increased at the moment; the exhaust pipe is installed behind the draught fan, and the tail end is led to the safe position and is discharged atmosphere.

The on-site control cabinet is a control device of the discharging system and is used for controlling the downward movement and the upward movement of the discharging head of the dry ash bulk machine, the switch of the draught fan, the switch of the pneumatic gate valve, the interlocking of the discharging head of the dry ash bulk machine and the upper limit and the lower limit, and the full-material control interlocking of the pneumatic gate valve and the material level meter of the dry ash bulk machine. Meanwhile, signals can be provided for the DCS remote control equipment according to the requirements of users. The local control cabinet can provide two operation modes of manual operation and automatic operation, and the degree of automation is high.

preferably, the filtering structure comprises a plurality of filter cartridge seats and filter cartridges which are matched with each other, the filter cartridges are positioned between the upper shell and the lower shell, the filter cartridge seats are positioned above the upper shell, and the filter cartridge seats are connected with the clean gas channel through bent pipes; the back-blowing structure comprises a back-blowing hose, an electromagnetic valve, an annular air bag and a controller, wherein the annular air bag and the controller are installed at the bottom of the upper shell, the back-blowing hose is connected with the annular air bag and a filter cartridge seat, and the electromagnetic valve is installed on the back-blowing hose.

The annular air bag is used for storing back-blowing air with certain pressure, and the volume of the annular air bag is large enough to reduce the pressure fluctuation of the annular air bag caused by back-blowing air outlet. When the controller sends a back blowing signal, the electromagnetic valve is opened, back blowing gas passes through the hose and is sprayed into the filter cylinder through the spray head connected to the tail end of the hose, the filter cylinder is filled with gas with the volume which is multiple times of the volume of the filter cylinder, and dust attached to the outer side of the cloth bag is blown down. And after the primary blowing is finished, the filter drum restarts to filter the dust filtering gas. When the back-blowing signal is received next time, the back-blowing is started again, the back-blowing frequency of the electromagnetic valve is controlled by the pulse controller, the back-blowing frequency is low when the resistance on the two sides of the filter cylinder is small, the back-blowing frequency is increased when the dust deposition on the outer part of the filter cylinder increases after the filter cylinder runs for a period of time, and the service life of the filter cylinder is prolonged.

Preferably, the upper end of the ash falling pipe is fixed at the central position of the upper shell, a flange connected with a feeding pipe at the bottom of the ash storage is arranged at the top of the ash falling pipe, and the ash falling pipe is made of a seamless steel pipe; the lower shell is a conical shell with a large upper part and a small lower part, an inner flanging matched with the lower shell is arranged at the bottom of the upper shell, the clean gas channel is located between the inner flanging and the upper part of the lower shell, and the upper shell and the lower shell are formed by splicing steel plates.

the ash falling pipe is made of a seamless steel pipe, the thickness of the ash falling pipe not only needs to meet the strength requirement, but also considers the abrasion caused by the abrasion of the pipeline due to the ash falling; the structural strength of the upper shell and the lower shell meets the use requirement, the inclination angle of the conical shell part of the lower shell is larger than the repose angle of ash, and the ash after the filter drum is backflushed can fall into the bulk machine along the conical shell.

Preferably, the upper shell is provided with a dust falling pipe hole matched with the dust falling pipe and a plurality of filter cylinder seat holes matched with the filter cylinder seats; the dust-containing gas inlet, the filter cylinder seat, the bent pipe, the clean gas channel and the clean gas outlet form an airflow channel of the dust remover, and the clean gas outlet is provided with an induced draft fan; a loop flange connected with a bulk machine is arranged on the dusty gas inlet, and the filter cylinder seat is connected with the upper shell by bolts; the filter cartridges are arranged in an inclined mode, at most 8 filter cartridges are arranged along the circumference of the lower shell, the filtering area reaches 33m2, and the air flow speed is reduced to be below 0.5 m/min.

The induced draft fan is used for absorbing gas in the dust remover and the discharging head of the bulk machine, so that the induced draft fan is under negative pressure, and ash leakage in the whole ash discharging process is avoided. The dust-containing gas enters the dust remover from the gas inlet under the action of the induced draft fan. The dust-containing gas inlet is connected with the bulk machine by adopting a loop flange, thereby avoiding the dislocation of bolt holes caused by machining errors and increasing the installation difficulty. The filter cartridge seat is connected with the shell through bolts, and the filter cartridge is convenient and quick to replace. The dust-containing gas is filtered by the filter cylinder to become clean gas, the clean gas enters the filter cylinder seat from the inside of the filter cylinder and then is guided out by a bent pipe arranged on the filter cylinder seat to enter a clean gas cavity formed by enclosing a dust remover shell and a conical shell, a hole is formed in a certain position of the clean gas cavity, the clean gas is led out from the hole, and the clean gas is directly discharged into the atmosphere after passing through a draught fan. Meanwhile, in order to secure the filtering efficiency of the filter cartridge, the gas filtering speed of the filter cartridge must be reduced, and thus the filtering area must be increased. In order to meet the requirement, the filter cartridges are arranged in an inclined mode, at most 8 filter cartridges are arranged along the circumference of the conical shell, the filtering area is 33m2, the air flow speed is reduced to be below 0.5m/min, the filtering efficiency of the filter cartridges is greatly improved, and the service life of the filter cartridges is prolonged. The filter cartridge adopts a high-efficiency filter cartridge, the discharge concentration can reach the requirement of ultralow discharge of 10mg/m3, and the filter cartridge has no pollution to the environment.

Preferably, the sealing structure comprises a telescopic dust cover arranged outside the fixed inner cylinder and the movable inner cylinder, a dust cover top fixing cylinder arranged at the top of the telescopic dust cover, and a dust cover lower fixing cylinder arranged at the lower part of the telescopic dust cover, the discharging head is positioned at the bottom of the telescopic dust cover, and the bottom of the outer steel wire rope is connected with the dust cover lower fixing cylinder.

The sealing structure can prevent ash leakage and ash emission during ash falling. One section of dust cover between the discharge head and the dust cover lower part fixed cylinder can still freely stretch out and draw back when the discharge head motor stops running. When unloading, the loading car can be heavily sunk after loading, the motor has been shut down this moment, and the outer wire rope can not transfer the discharge head again, because the free flexible of this section dust cover, the certain height still can be transferred to the discharge head, and the loading car can be hugged closely to the discharge head from this, prevents that the space from appearing and emit the ash.

Preferably, the telescopic dust cover and the dust cover top fixing barrel as well as the telescopic dust cover and the discharging head are clamped by a first hoop, and the telescopic dust cover and the dust cover lower part fixing barrel are clamped by a second hoop.

preferably, the steel wire discs are connected with the speed reducing motor through a main shaft, the speed reducing motor is a positive and negative double-acting motor, the number of the steel wire discs is 3, and the 3 steel wire discs are installed on the main shaft through flat keys and synchronously rotate along with the main shaft.

The utility model provides a gear motor is positive and negative two effect motors, provides motive power and exports the main shaft, and 3 steel wire coils pass through the key and install on the main shaft, along with the synchronous rotation of main shaft.

Preferably, a steel wire rope tray matched with an outer steel wire rope is arranged on the mounting base, rope rings matched with the outer steel wire rope are arranged on the telescopic dust cover, the first hoop and the second hoop, a steel wire rope fixing component matched with the outer steel wire rope is arranged on the fixing cylinder at the lower part of the dust cover, the head of the outer steel wire rope is wound on the steel wire tray, the outer steel wire rope passes through the steel wire rope tray and then sequentially passes through the rope rings, and the tail end of the outer steel wire rope is fixed on the steel wire rope fixing component.

The two ends of the telescopic dust cover are tightly held and fixed by the hoops, the hoops are provided with rope rings, and the steel wire ropes penetrate through the rope rings to ensure that the telescopic dust cover is not off tracking and can only vertically stretch up and down. In order to ensure that dust does not emerge, a negative pressure area is arranged between the telescopic dust cover and the inner cylinder, air flow in the negative pressure area flows upwards into the dust remover, and the air flow is filtered into clean air in the dust remover.

Preferably, the fixed inner cylinder and the telescopic inner cylinder are conical cylinders, and the fixed inner cylinder and the movable inner cylinder are connected in series through a plurality of inner steel wire ropes; the movable pulley block is arranged on the steel wire rope tray, so that the motion of the outer steel wire rope in the horizontal direction is converted into the motion in the vertical direction, the movable inner cylinders are conical cylinders rolled by steel plates, the movable inner cylinders can freely stretch and retract within the range of taper, and the movable inner cylinder at the bottommost part is welded and fixed with the fixed cylinder at the lower part of the dust cover through the rib plate; the mounting base is also provided with a butt joint port matched with the fixed inner cylinder, and the butt joint port is in butt joint with a loop flange on a dust-containing gas inlet at the bottom of the built-in filter cartridge type filter.

The fixed inner cylinder and the movable inner cylinder are both conical cylinders, when the discharging head is lowered (lifted), the movable inner cylinder can freely extend (contract) in a taper range due to gravity, and ash in the ash falling pipe flows into the ash containing vehicle through the fixed inner cylinder and the outer cylinder. After the unloading is finished, the unloading head is lifted to the original position.

The utility model discloses the working process of well bulk machine body does: when unloading, the motor is started, the unloading head is lowered through the outer steel wire rope, so that ash in the ash dropping pipe enters the ash loading vehicle, and after the ash loading is finished, the unloading head is lifted to the original position. The utility model discloses can transfer and unload stub bar to different heights, satisfy not co-altitude loading of ash truck requirement of feeding.

The utility model provides a built-in filter cartridge type filter compares with the cloth bag collector of using at present, following advantage:

1. Compact structure and small occupied area. The filter element with the same size has the filter area of the filter cartridge far larger than that of the filter bag, so that the filter cartridge type dust remover has small overall dimension and more compact arrangement under the condition of the same filter area. The built-in filter cartridge type dust remover can be directly installed on the bulk machine body through the flange, so that the floor area of the cloth bag type dust remover which is independently arranged is saved.

2. the equipment running cost is low. The dust remover has the advantages that the dust remover is small in overall size, low in equipment material consumption and low in overall manufacturing cost; compared with cloth bag filtration, the filter cartridge has the advantages of high filtration efficiency, high allowable filtration speed, long service life and long corresponding replacement period. Finally, because the size of a single filter cylinder is small, and the electromagnetic valve and the filter cylinder are configured in a one-to-one mode, the air consumption is reduced when the electromagnetic valve is used for blowing, and the consumption of instrument air is saved.

3. the maintenance and the use are convenient. The quick-wear parts of the dust remover are a filter element and an electromagnetic valve. The filter element is damaged or needs to be replaced in time after the service life of the filter element is over. The sack type dust remover sack is in large quantity, and the quantity that needs to be changed is big, and changes the sack and operate at the dust remover top, need set up the maintenance platform, changes and wastes time and energy. When the built-in filter cartridge type dust remover is replaced, the filter cartridge can be drawn out for replacement only by unscrewing the bolts for connecting the filter cartridge seat and the dust remover shell, and the replacement is convenient and fast. Compared with a bag-type dust collector, the electromagnetic valves of the built-in filter cartridge type dust collector are less in configuration quantity, so that the overhauling workload is less, and the failure rate is low during operation.

The utility model provides a bulk machine body has following characteristics:

1. The device has strong adaptability, is suitable for the unloading requirements of materials with various different types (ash and slag) and different parameters (granularity, fineness, temperature and viscosity), can lower the unloading head to different heights, meets the loading requirements of ash loading vehicles with various heights, and can be arranged on various different foundations, such as concrete foundations, steel structure foundations and the like, and meets the unloading requirements under different environments;

2. the structure design is novel and reasonable, the installation is convenient, all the fixed parts of the built-in filter cartridge type bulk machine body are installed on the base, the structure is compact, the occupied area is small, the unloading requirements of different heights can be met by increasing and decreasing the number of the movable inner cylinders and the length of the steel wire rope during the design, the whole machine can leave a factory after the assembly is finished and can be debugged in a factory workshop, and after the assembly is delivered to a site, the assembly is connected with a concrete foundation or a steel structure foundation through the foundation bolts on the base, so the installation is convenient and;

3. The operation is safe and reliable, the degree of automation is high, reliable interlocking is arranged among all the components, the safe and stable operation of all the components is ensured, and meanwhile, the interlocking of other equipment and components in an interface and discharging system is provided, so that manual and full-automatic operation is realized.

the utility model is formed by combining a bulk machine body and a built-in filter cartridge type dust remover.

When unloading, the motor is started, the unloading head is lowered through the steel wire rope, ash in the ash falling pipe enters the ash loading vehicle, after the ash loading is finished, the unloading head is lifted, and meanwhile, the lowering height of the unloading head can be adjusted according to different heights of the ash loading vehicle, so that the unloading requirements of different ash loading vehicles are met. The discharging head and the automobile charging port are tightly contacted without ash leakage in the ash charging process of the dry ash bulk loader, the dust cover is not damaged, and all the components are firmly sealed without ash leakage.

the built-in filter cartridge type dust remover is used for filtering the induced draft fan and absorbing the dust-containing gas from the inside of the telescopic dust cover. The dust-containing gas is absorbed from the space between the flexible dust cover and the movable inner cylinder of the bulk machine body under the action of the fan, enters the built-in filter cartridge type dust remover, is filtered to reach the national pollutant emission standard and then is led out from a clean gas outlet of the dust remover.

The built-in filter cartridge type dust remover is directly installed above the bulk machine body, and a dust-containing gas inlet of the dust remover is connected with a butt joint port of the bulk machine body through a loop flange. When the filter cartridge type dust remover is installed on site, the built-in filter cartridge type dust remover and the bulk machine body are separately transported to the site, the bulk machine body is installed and fixed firstly, the dust remover is hoisted to the upper side of the bulk machine body after the dust remover is checked to be correct, the loop flange is adjusted to align bolt holes, and then the bolts are screwed up for fixing. The movable sleeve flange is used for connecting, so that the problems that bolt holes are staggered and cannot be installed due to machining errors during field installation are avoided, the installation difficulty is reduced, and meanwhile, the bolt connection is convenient to disassemble, assemble and maintain.

Compared with a split type unloading structure, the utility model discloses the built-in filter cartridge type dry ash bulk machine of combination formula has following advantage:

1. Small occupied area and compact structure. By adopting the filter cartridge type dust remover, under the condition of the filter element with the same size, the filter area of the filter cartridge is far larger than that of the filter bag, so that the filter cartridge type dust remover has small overall dimension and more compact arrangement under the condition of ensuring the same filter area. Compared with a split structure of the dust remover and the bulk machine, the built-in filter cartridge type dry ash bulk machine adopts a mode of vertically combining the dust remover and the bulk machine, so that the floor area of the cloth bag type dust remover which is independently arranged is saved, and a dust-containing gas pipeline from the bulk machine to the dust remover and a dust-removing ash-falling pipeline from the dust remover to the bulk machine which are independently arranged are saved in the combined mode, so that the structure is compact, and only a small installation space is needed;

2. The equipment running cost is reduced. In the split system of the dust remover and the bulk machine, a matched induced draft fan is arranged between the dust remover and the bulk machine, and the fan conveys dust-containing gas to the dust remover for filtration, so that the induced draft fan is seriously abraded, and dust is easy to leak at the fan; in the combined built-in filter cylinder type dry ash bulk system, the draught fan is arranged behind the built-in filter cylinder type dry ash bulk machine, the pipeline arrangement length is reduced, the draught fan conveys filtered clean air, the draught fan operates stably, and the loss is low.

3. The maintenance and the overhaul are convenient. In the split system structure, the system is more complicated, connecting pipes are more, dust leakage points are correspondingly increased, and the bag-type dust collector is generally arranged outdoors and is inconvenient to overhaul. The built-in filter cartridge type dry ash bulk machine is integrally installed below the blanking hopper, and the whole equipment can be maintained as long as a small space is reserved, so that the operation is convenient and fast. The maintenance workload is less, and the failure rate is low during operation.

4. The automation degree is high. The interface is provided to be interlocked with other parts in the discharging system, so that manual and full-automatic operation is realized.

The utility model provides a perfect solution for the unloading of the ash silo and the slag silo of the power plant; has the following characteristics:

1. good regulation performance and strong adaptability. The main points are as follows:

1) The material applicability is wide. The discharging system is suitable for discharging materials of various different types (ash and slag) and different parameters (granularity, fineness, temperature and viscosity).

2) The unloading device can meet the unloading requirements of different environments. The built-in filter cylinder type dry ash bulk loader can lower the unloading head to different heights, and meets the loading requirements of ash loading vehicles with various heights. Meanwhile, the built-in filter cylinder type dry ash bulk machine can be mounted on various different foundations, such as a concrete foundation, a steel structure foundation and the like, and the unloading requirements under different environments are met.

3) the adjusting performance is good. The utility model can adjust the discharge capacity by adjusting the pneumatic inserting plate valve, adjust the air quantity of the draught fan by adjusting the size of the air adjusting door, and avoid the phenomena of ash leakage and ash emission on the premise of ensuring larger discharge speed;

2. Small occupied area and convenient installation. The built-in filter cylinder type dry ash bulk machine adopts a combined structure of a built-in filter cylinder type dust remover and a dry ash bulk machine, so that a dust-containing gas pipeline from the bulk machine to the dust remover and a dust-removing ash-falling pipeline from the dust remover to the bulk machine which are separately arranged are saved, the structure is compact, and only a small installation space is needed; the ash falling pipeline above the built-in filter cartridge type dry ash bulk machine can be adjusted according to the actual installation situation, so that the flexibility is higher;

3. The operation is stable and reliable, and the degree of automation is high. All equipment in the system are reliably interlocked and cooperatively operated, so that the safe and reliable operation of all the parts is ensured, meanwhile, manual and full-automatic operation can be realized through the logic interlocking of the local control cabinet, the labor condition is improved, and meanwhile, the error caused by manual operation is avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the assembled filter cartridge type filter and bulk machine body of the present invention;

FIG. 3 is a schematic structural view of the bulk machine body of the present invention;

Fig. 4 is a schematic partial cut-away view of the bulk machine body of the present invention;

FIG. 5 is a schematic structural view I of the filter with a built-in filter cartridge according to the present invention;

FIG. 6 is a schematic structural view II of the filter with a built-in filter cartridge according to the present invention;

In the drawings 1 and 2, 1 is a manual gate valve, 2 is an ash dropping pipe, 3 is a waveform expansion joint, 4 is a pneumatic gate valve, 5 is a built-in filter cartridge type filter, 6 is an induced draft pipe, 7 is a damper, 8 is an exhaust pipe, 9 is an induced draft fan, 10 is a local control cabinet, 11 is a bulk machine body, 12 is a support table, 13 is an ash dropping bucket, 14 is DCS remote control equipment; 15. a fastener;

in the figures 3 and 4, 1 is a base, 2 is a steel wire disc, 3 is a speed reducing motor, 4 is a main shaft, 5 is an outer steel wire rope, 6 is an air pump and film level indicator assembly, 7 is an upper limit push rod, 8 is an upper limit switch, 9 is a lower limit compression rod, 10 is a lower limit switch, 11 is a butt joint port, 12 is a steel wire rope tray, 13 is a dust cover top fixing cylinder, 14 is a first hoop, 15 is a telescopic dust cover, 16 is a flexible air pipe, 17 is a second hoop, 18 is a dust cover lower fixing cylinder, 19 is a discharging head, 20 is a fixing inner cylinder, 21 is a movable inner cylinder, 22 is an inner steel wire rope, 23 is a level indicator contact;

In the figures 5 and 6, 1 is an ash falling pipe, 2 is an upper shell, 3 is a clean gas outlet, 4 is an annular gas bag, 5 is a controller, 6 is a lower shell, 7 is a dust-containing gas inlet, 8 is a filter cartridge seat, 9 is a back blowing hose, 10 is a bent pipe, 11 is an electromagnetic valve, 12 is a filter cartridge.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in figure 1, the special discharging system for the ash storehouse and the slag storehouse comprises a supporting platform 12, a bulk machine body 11 arranged on the supporting platform 12, a built-in filter cartridge type filter 5, an induced draft fan 9, an on-site control cabinet 10 and an ash falling hopper 13 connected to the built-in filter cartridge type filter 5, wherein the built-in filter cartridge type filter 5 is fixed on the top of the bulk machine body 11 through a fastener 15. An air inlet of the draught fan 9 is connected with an air outlet of the built-in filter cartridge type filter 5 through an induced draft pipe 6, and an air exhaust pipe 8 is connected to the air outlet of the draught fan 9. A manual gate valve 1 is arranged between an ash falling hopper 13 and an ash falling pipe 2, a waveform expansion joint 3 is arranged on the ash falling pipe 2, a pneumatic gate valve 4 is arranged below the waveform expansion joint 3, an air guide pipe 6 is provided with a regulating damper 7, and at least one DCS remote control device 14 is connected to the local control cabinet 10.

As shown in fig. 3 and 4, the bulk machine body mainly comprises a power structure, a discharging structure and a protection structure.

the power structure comprises a steel wire disc 2, a speed reducing motor 3, a main shaft 4, an outer steel wire rope 5, a steel wire rope tray 12, a second hoop 17, a dust cover lower part fixing cylinder 18, the outer steel wire rope 5, a fixing inner cylinder 20, an inner steel wire rope 22 and a movable inner cylinder 21. The speed reducing motor 3 is arranged on the mounting base 1, and the main shaft 4 penetrates through the speed reducing motor 3 and the steel wire disc 2 and is connected with the two through a flat key. The speed reducing motor 3 drives the steel wire disc 2 to rotate when rotating. One end of the outer steel wire rope 5 is wound on the steel wire disc 2, and the other end of the outer steel wire rope bypasses the steel wire rope tray 12 and passes through the opening on the base 1 to be fixed on the second hoop 17. The steel wire tray 12 is installed on the installation base 1, and a movable pulley block is installed on the steel wire tray, so that the horizontal movement of the outer steel wire rope 5 is converted into the vertical movement. The fixed inner cylinder 20 is installed on the installation base 1 through bolts, a plurality of movable inner cylinders 21 are connected in series below the fixed inner cylinder 20 through inner steel wire ropes 22, the movable inner cylinders 21 are conical cylinders rolled by steel plates, and the movable inner cylinders 21 can freely stretch out and draw back within a taper range. The movable inner cylinder 21 at the bottommost part is welded and fixed with the dust cover lower part fixing cylinder 18 through the rib plate, and the outer part of the dust cover lower part fixing cylinder 18 is used as a second hoop 17 to be tightly held. When being driven by the outer steel wire rope 5 to move upwards (downwards), the second anchor ear 17 and the dust cover lower part fixing barrel 18 are driven to move upwards (downwards), and the movable inner barrel 21 at the lowest end is welded and fixed with the dust cover lower part fixing barrel 18 through the rib plate, so that all the inner movable inner barrels 21 are driven to contract (fall down), and the unloading requirements of different heights are met.

The discharging structure consists of a dust cover top fixing cylinder 13, a discharging head 19, a fixing inner cylinder 20, a movable inner cylinder 21, a telescopic dust cover 15, a dust cover lower part fixing cylinder 18, a first hoop 14 and a second hoop 17. The blanking pipe in the built-in filter cylinder type dust remover is inserted into the fixed inner cylinder 20 after the assembly is finished, and the material finally enters the ash loading vehicle along the fixed inner cylinder 20, the plurality of movable inner cylinders 21 and the unloading head 19. In order to prevent dust from flying, the telescopic dust cover 15 is bound by hoops outside the dust cover top fixing cylinder 13, the dust cover lower fixing cylinder 18 and the discharge head 19. The top of the telescopic dust cover 15 is bound on the dust cover top fixing cylinder 13 by a first anchor ear 14, the middle is bound on the dust cover lower fixing cylinder 18 by a second anchor ear 17, and the bottom is bound on the discharging head 19 by the first anchor ear 14. The telescopic dust cover 15 is contracted (dropped) simultaneously with the upward (downward) movement of the dust cover lower fixing tube 18, preventing the dust from leaking out. The section of dust cover located between the dust cover lower part fixing barrel 18 and the discharging head 19 can prevent dust raising on one hand, and on the other hand, when discharging, the dust loading vehicle can sink heavily after loading, at the moment, the motor 3 is stopped, the discharging head 19 can not be placed down by the outer steel wire rope 5, and due to the free extension and contraction of the telescopic dust cover, the discharging head 19 still can place a certain height, so that the discharging head 19 can be tightly attached to the dust loading vehicle, and the dust is prevented from overflowing due to gaps. The dust-containing gas is sucked upwards into the built-in filter cartridge type dust remover through the space between the dust cover top fixed cylinder 13, the telescopic dust cover 15, the dust cover lower part fixed cylinder 18, the fixed inner cylinder 20 and the movable inner cylinder 21 under the action of the fan for filtering.

the protection structure comprises an upper limit protection structure, a lower limit protection structure and a full material protection structure.

The upper limit protection structure consists of a speed reducing motor 3, a main shaft 4, an upper limit push rod 7 and an upper limit switch 8. The upper limit push rod 7 and the upper limit switch 8 are both arranged on the base 1. When the speed reducing motor 3 drives the main shaft 4 to rotate, the upper limit push rod 7 installed on the main shaft 4 moves towards one side of the upper limit switch 8 due to the thread transmission principle, when the discharging head 19 ascends to the limit position (the dust cover 15 is completely contracted), the upper limit push rod 7 is contacted with the upper limit switch 8, the upper limit switch 8 sends a stop instruction, the speed reducing motor 3 is powered off and stops, and the discharging head 19 stops ascending. The upper limit protection structure prevents the gear motor 3 from being burnt out due to overload rotation.

lower spacing protection architecture is by outer wire rope 5, lower spacing depression bar 9, lower limit switch 10 constitutes, lower spacing depression bar 9, lower limit switch 10 all installs on base 1, when unloading head 19 transfers, outer wire rope 5 is in the tensioning state, make lower spacing depression bar 9 up lift, after unloading head 19 and dress grey car contact, outer wire rope 5 is lax, lower spacing depression bar 9 can fall down because of action of gravity, push down and trigger lower limit switch 10, lower limit switch 10 sends out the shut down instruction, gear motor 3 cuts off the power supply and shuts down, the head of unloading stops to fall down. The lower limit protection structure prevents the outer steel wire rope 5 from still being lowered after the discharge head 19 falls into position, so that the rope runs. The lower limiting protection structure saves manual operation of people, and the positioning is more accurate when the unloading head 19 is lowered.

The full material protection structure consists of an air pump and film charge level indicator component 6, a charge level indicator contact 23 and a flexible air pipe 16. The air pump and level indicator assembly 6 is arranged on the base 1, one end of the flexible air pipe 16 is connected to the air pump of the air pump and level indicator assembly 6, and the other end of the flexible air pipe penetrates through the opening on the base 1 and is connected to a level indicator contact 23 arranged on the discharging head 19. Utilize air pump 6 to ventilate charge level indicator contact 23 through flexible trachea 16, when the ash charging car material was full, the section of thick bamboo gas port of charge level indicator contact 23 can be blockked up to the material to make the film charge level indicator 6 of installing on installation 1 suppress the pressure, thereby trigger film charge level switch, interlock feed opening valve closed, the stop blanking. The full charge protection structure prevents the discharge head 19 from being blocked by the material overfill and prevents ash from overflowing and leaking.

the butt joint port 11 is in butt joint with a loop flange arranged at the bottom of a built-in filter cylinder type filter arranged at the upper part of the built-in filter cylinder type dry ash bulk machine.

The utility model provides an air pump and film charge level indicator subassembly and charge level indicator contact are the conventional part of market purchase and make up, so do not describe in detail.

as shown in fig. 4 and 5, the dust collector with a built-in filter cartridge comprises a dust falling pipe 1, a dust-containing gas inlet 7, an upper shell 2, a lower shell 3, a filtering structure and a back-blowing structure.

The filter device comprises a filter cartridge seat 8 arranged on the outer side of the dust remover shell 2 and a filter cartridge 12 arranged on the inner side, under the action of external fan draught force, dust-containing gas enters the dust remover from a dust-containing gas inlet 7, after being filtered by the filter cartridge 12, dust is filtered, and the filtered clean gas enters the filter cartridge seat 8 from the inside of the filter cartridge. The side part of the filter cylinder 8 is provided with a hole, and is matched with a welding installation bent pipe 10, and clean gas enters a clean gas annular channel which is formed by enclosing the dust remover shell 2 and the dust remover conical shell 3 through the bent pipe 10. One side cooperation trompil installation clean gas export 3 on the dust remover casing 2, the clean gas after the filtration is derived from this, and the atmosphere is directly arranged behind the fan.

The back blowing structure comprises an annular air bag 4, a controller 5, a back blowing hose 9, a bent pipe 10 and an electromagnetic valve 11. The electromagnetic valve 11 is arranged outside the annular air bag 4, one end of the back-blowing hose 9 is connected to the electromagnetic valve 11, and the other end of the back-blowing hose is communicated with the filter cartridge seat 8 to spray back-blowing air into the filter cartridge 12. The controller 5 is bound on the annular air bag 4 through a hoop. The annular air bag 4 stores gas for back blowing, when the controller 5 sends back blowing signals, the electromagnetic valve 11 is opened, back blowing gas is sprayed into the interior of the filter cylinder 12 through a spray head connected to the tail end of the hose after passing through the back blowing hose 9, the filter cylinder 12 is filled with gas volume which is multiple times of the volume of the filter cylinder 12 in short time, and dust attached to the outer side of the filter cylinder is blown down. After the completion of one blow, the filter cartridge 12 again starts to filter the dust-filtered gas. When the dust remover starts to operate, the controller 5 can properly reduce the back-blowing frequency when the resistance on two sides of the filter cylinder 12 is small, and the back-blowing frequency is increased when the dust deposition outside the filter cylinder 12 increases after the filter cylinder operates for a period of time. The back-flushing structure improves the filtering efficiency of the filter cartridge 12 and prolongs the service life of the filter cartridge.

The bottom of the ash falling pipe penetrates through the dust-containing gas inlet and then penetrates into the fixed inner cylinder of the bulk machine body. The butt joint port is in butt joint with a lap joint flange on a dust-containing gas inlet at the bottom of the filter with the built-in filter cartridge.

The ash falling pipe in figure 1 and the ash falling pipes in figures 5 and 6 are connected into the same ash falling pipe.

Claims (10)

1. the utility model provides an ash storehouse and special system of unloading of slag storehouse, includes the brace table, installs bulk machine body, built-in cartridge filter, draught fan and the local control cabinet on a brace table and connects the ash falling bucket on built-in cartridge filter, its characterized in that: the built-in filter cartridge type filter is fixed at the top of the bulk machine body through a fastener, the bulk machine body comprises an installation base, a blanking structure installed on the installation base, a sealing structure matched with the blanking structure, a limiting structure and a material full control structure, the blanking structure comprises a fixed inner cylinder, a plurality of movable inner cylinders installed at the bottom of the fixed inner cylinder, a discharging head located below the bottommost movable inner cylinder, a plurality of outer steel wire ropes for driving the movable inner cylinders and the discharging head to move, a plurality of steel wire discs for installing the outer steel wire ropes and a speed reduction motor for driving the steel wire discs to rotate, the fixed inner cylinder is installed at the lower part of the installation base through bolts, the limiting structure comprises an upper limiting protection structure and a lower limiting protection structure, the upper limiting protection structure comprises an upper limiting push rod and an upper limiting switch which are installed on the installation base, the lower limiting protection structure comprises outer steel wire ropes connected with the steel wire discs and the inner steel wire ropes The material full control structure comprises an air pump and a material level meter assembly arranged on the mounting base, a material level meter contact arranged on the discharging head and a flexible air pipe connected with the air pump and the material level meter assembly and the material level meter contact;

The built-in filter cartridge type filter comprises an upper shell, a lower shell, a dust falling pipe, a clean gas outlet, a filtering structure, a back flushing structure and a dust-containing gas inlet, wherein the upper shell and the lower shell are connected with each other;

The clean gas outlet is connected with the air inlet of the draught fan through an induced draft pipe, and the air outlet of the draught fan is connected with an exhaust pipe.

2. The special discharging system for the ash storehouse and the slag storehouse according to claim 1, characterized in that: the device is characterized in that a manual gate valve is arranged between the ash falling hopper and the ash falling pipe, a waveform expansion joint is arranged on the ash falling pipe, a pneumatic gate valve is arranged below the waveform expansion joint, an air adjusting door is arranged on the induced draft pipe, and at least one DCS remote control device is connected to the local control cabinet.

3. The special discharging system for the ash storehouse and the slag storehouse according to claim 1, characterized in that: the filter structure comprises a plurality of filter cylinder seats and filter cylinders which are matched with each other, the filter cylinders are positioned between the upper shell and the lower shell, the filter cylinder seats are positioned above the upper shell, and the filter cylinder seats are connected with a clean gas channel through bent pipes; the back-blowing structure comprises a back-blowing hose, an electromagnetic valve, an annular air bag and a controller, wherein the annular air bag and the controller are installed at the bottom of the upper shell, the back-blowing hose is connected with the annular air bag and a filter cartridge seat, and the electromagnetic valve is installed on the back-blowing hose.

4. The special discharging system for the ash storehouse and the slag storehouse according to claim 3, wherein: the upper end of the ash falling pipe is fixed at the central position of the upper shell, a flange connected with a feeding pipe at the bottom of the ash storehouse is arranged at the top of the ash falling pipe, and the ash falling pipe is made of a seamless steel pipe; the lower shell is a conical shell with a large upper part and a small lower part, an inner flanging matched with the lower shell is arranged at the bottom of the upper shell, the clean gas channel is located between the inner flanging and the upper part of the lower shell, and the upper shell and the lower shell are formed by splicing steel plates.

5. The special discharging system for the ash storehouse and the slag storehouse according to claim 4, wherein the special discharging system comprises: the upper shell is provided with a dust falling pipe hole matched with the dust falling pipe and a plurality of filter cylinder seat holes matched with the filter cylinder seat; the dust-containing gas inlet, the filter cylinder seat, the bent pipe, the clean gas channel and the clean gas outlet form an airflow channel of the dust remover, and the clean gas outlet is provided with an induced draft fan; a loop flange connected with a bulk machine is arranged on the dusty gas inlet, and the filter cylinder seat is connected with the upper shell by bolts; the filter cartridges are arranged in an inclined mode, at most 8 filter cartridges are arranged along the circumference of the lower shell, the filtering area reaches 33m2, and the air flow speed is reduced to be below 0.5 m/min.

6. The special discharging system for the ash storehouse and the slag storehouse according to claim 1, characterized in that: the sealing structure comprises a telescopic dust cover arranged outside the fixed inner cylinder and the movable inner cylinder, a dust cover top fixing cylinder arranged at the top of the telescopic dust cover, and a dust cover lower fixing cylinder arranged at the lower part of the telescopic dust cover, wherein the discharging head is positioned at the bottom of the telescopic dust cover, and the bottom of the outer steel wire rope is connected with the dust cover lower fixing cylinder.

7. The special discharging system for the ash storehouse and the slag storehouse according to claim 6, wherein: the telescopic dust cover and the dust cover top fixing cylinder as well as the telescopic dust cover and the discharging head are clamped by a first hoop, and the telescopic dust cover and the dust cover lower part fixing cylinder are clamped by a second hoop.

8. The special discharging system for the ash storehouse and the slag storehouse according to claim 1, characterized in that: the steel wire discs are connected with the speed reducing motor through a main shaft, the speed reducing motor is a positive and negative double-acting motor, the number of the steel wire discs is 3, and the 3 steel wire discs are installed on the main shaft through flat keys and synchronously rotate along with the main shaft.

9. The special discharging system for the ash storehouse and the slag storehouse according to claim 7, wherein: the installation base is provided with a steel wire rope tray matched with an outer steel wire rope, the telescopic dust cover, the first hoop and the second hoop are respectively provided with a rope ring matched with the outer steel wire rope, a steel wire rope fixing component matched with the outer steel wire rope is arranged on the dust cover lower fixing cylinder, the head of the outer steel wire rope is wound on the steel wire tray, and the tail end of the outer steel wire rope is fixed on the steel wire rope fixing component after passing through the steel wire rope tray and sequentially passing through the rope rings.

10. the special discharging system for the ash storehouse and the slag storehouse according to claim 9, wherein: the fixed inner cylinder and the telescopic inner cylinder are conical cylinders, and the fixed inner cylinder and the movable inner cylinder are connected in series through a plurality of inner steel wire ropes; the movable pulley block is arranged on the steel wire rope tray, so that the motion of the outer steel wire rope in the horizontal direction is converted into the motion in the vertical direction, the movable inner cylinders are conical cylinders rolled by steel plates, the movable inner cylinders can freely stretch and retract within the range of taper, and the movable inner cylinder at the bottommost part is welded and fixed with the fixed cylinder at the lower part of the dust cover through the rib plate; the mounting base is also provided with a butt joint port matched with the fixed inner cylinder, and the butt joint port is in butt joint with a loop flange on a dust-containing gas inlet at the bottom of the built-in filter cartridge type filter.