CN214466455U - Conical ash control valve with automatic slag poking function - Google Patents

Abstract

The utility model discloses an automatic toper ash control valve who discloses sediment function is disclosed in area, including the disk seat that is equipped with boiler row's sediment mouth and the valve body that is equipped with ash control valve discharge gate, still include the valve rod and disclose the sediment pole, valve rod slidable wears to establish in the valve body, disclose the sediment pole and wear to establish in the valve rod, disclose the sediment pole can along the axis of valve rod removes, disclose the sediment pole and carry out the breakage through making a round trip to stretch out and draw back the intraoral cubic material of row's sediment of boiler, disclose the sediment pole and seted up the compressed air passageway, disclose the head of sediment pole seted up a plurality of with the communicating purge hole of compressed air passageway, the purge hole blows off the mobility that compressed air is used for strengthening broken material. Poking the sediment pole and making a round trip to stretch out and draw back and accomplish the material and stir, make the loose separation of lime-ash that the boiler slag notch accumulated or make the bold slagging scorification broken, poking the sediment pole simultaneously and continuously sweeping near the broken lime-ash of boiler slag notch through the high-pressure gas of blowing hole blowout, the mobility of reinforcing lime-ash realizes poking the sediment purpose automatically.

Description

Conical ash control valve with automatic slag poking function

Technical Field

The utility model relates to a high temperature lime-ash valve field specifically is a toper ash accuse valve of sediment function is disclosed automatically in area.

Background

The development and application of circulating fluidized bed boiler technology has been widely used. The technology is one of the advanced technologies for clean coal combustion and realization of sustainable development strategy. It has the advantages of saving energy, clean combustion, safety, reliability, reducing pollution discharge, etc. However, in the actual operation of the boiler, some local structural problems also affect the efficiency of the boiler, for example, the slag discharge port is frequently blocked, so that the slag discharge of the boiler is gradually abnormal, and the safe and economic operation of the boiler is seriously affected.

At present, the dredging mode of the ash (slag) discharging port of the circulating fluidized bed boiler is mostly a slag poking inclined pipe additionally arranged on a valve or a slag dropping pipe so as to dredge during slag blockage. Once the ash (slag) discharging port is blocked, the conventional dredging mode is that an organizer inserts a slag poking strip into the ash (slag) discharging port of the boiler from a slag poking inclined tube for manual slag poking, and the labor intensity of field operators is high. Because the circulating fluidized bed boiler furnace is the pressure-fired, there is the risk of high temperature lime-ash leakage when disclosing the sediment, easily causes the scald accident, has great potential safety hazard. When dredging through disclosing the sediment pipe chute simultaneously, if the angle of adoption is improper, disclose the sediment strip and act on boiler ash discharge (sediment) mouthful wear-resisting castable, can increase the risk that the wear-resisting castable of furnace drops. And the required time is longer from the releasing of the slag poking task to the time that the organization personnel go to the scene to finish the dredging of the ash (slag) discharging port, so that the damage of the ash (slag) discharging port caused by the blockage for too long time is avoided, the blockage is usually stopped to wait for the personnel to dredge, and the normal use of the ash (slag) discharging port is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides an automatic toper grey accuse valve of disclosing sediment function in area, disclose the sediment pole and make a round trip to stretch out and draw back and accomplish the material and stir, make the loose separation of lime-ash of boiler row's sediment mouth accumulation or make the bold slagging scorification broken, disclose the sediment pole simultaneously and continuously sweep near broken lime-ash of boiler row's sediment mouth through blowing hole blowout high-pressure gas, the mobility of reinforcing lime-ash realizes disclosing the sediment purpose automatically.

The purpose of the utility model is realized through the following technical scheme: the utility model provides an automatic toper ash control valve who discloses sediment function of area, includes the disk seat that is equipped with boiler row's sediment mouth and the valve body that is equipped with grey control valve discharge gate, still includes the valve rod and disclose the sediment pole, valve rod slidable wears to establish in the valve body, the boiler row's sediment mouth is located on the removal route of valve rod, disclose the sediment pole and wear to establish in the valve rod, disclose the sediment pole can along the axis of valve rod removes, disclose the sediment pole and carry out the breakage through making a round trip flexible to the intraoral cubic material of boiler row's sediment, disclose the sediment pole and seted up the compressed air passageway, disclose the head of sediment pole seted up a plurality ofly with the communicating hole of blowing of compressed air passageway, the hole of blowing blows off the mobility that compressed air is used for reinforcing broken material.

Further, disclose sediment pole and include pipe cap, connecting pipe, middle coupling, steel pipe and afterbody coupling, the hole of sweeping is seted up in on the pipe cap, the pipe cap with connecting pipe threaded connection, the connecting pipe through middle coupling with the connection can be dismantled to the steel pipe, the steel pipe is kept away from the one end of connecting pipe with afterbody coupling is connected, afterbody coupling is connected with and discloses sediment drive arrangement, disclose sediment drive arrangement and be used for the drive disclose the sediment pole and do reciprocal linear motion.

Further, the valve rod is including being coniform valve head and water-cooling valve rod, the one end embedding of water-cooling valve rod set up in the big diameter end of valve head, the water-cooling valve rod with the valve head sticiss through heat-resisting high strength bolt to be connected, the water-cooling valve rod is connected with valve rod drive arrangement.

Further, a flexible heat conduction material is arranged between the water-cooling valve rod and the valve head, and the flexible heat conduction material is a material with heat conduction characteristics and extensible deformable characteristics.

Further, the water-cooling valve rod includes outer tube, intermediate tube, inner tube and porose end, the one end of outer tube with porose end is fixed, the water-cooling valve rod passes through porose end embedding extremely in the valve head, intermediate tube wears to establish in the outer tube, intermediate tube with be formed with first cooling channel between the outer tube, the inner tube is worn to establish in the intermediate tube, the inner tube with be formed with between the intermediate tube with the communicating second cooling channel of first cooling channel.

Furthermore, the outer wall of the outer pipe is provided with a cooling water flow inlet communicated with the first cooling channel, the outer wall of the middle pipe is provided with a cooling water flow outlet communicated with the second cooling channel, one end of the inner pipe is fixed with the inner wall of the porous end, and the slag poking rod is arranged in the inner pipe in a penetrating mode.

Furthermore, one end of the outer pipe, which is far away from the porous end, is fixed with a porous end cover I, the middle pipe penetrates into the outer pipe from the porous end cover I and is fixed with a porous end cover I, one end of the middle pipe, which is far away from the porous end, is fixed with a porous end cover II, the inner pipe penetrates into the middle pipe from the porous end cover II and is fixed with the porous end cover II, a compressed air pipe is communicated with the inner pipe, and a compressed air hole communicated with the compressed air channel is formed in the slag poking rod.

Further, the valve rod driving device comprises a screw rod, a valve rod connecting seat and a driving motor, one end of the screw rod is rotatably connected with the valve body, the other end of the screw rod is connected with an output shaft of the driving motor, the valve rod connecting seat is connected with the screw rod through threads, and the valve rod connecting seat is fixedly sleeved on the outer pipe.

Furthermore, the steel pipe is fixedly sleeved with a plurality of circular ring plates, and graphite packing is filled between every two adjacent circular ring plates.

Further, the slag poking driving device adopts a cylinder or a linear reciprocating motor.

The utility model has the advantages that:

1. the material stirring is accomplished through disclosing the sediment pole and making a round trip to stretch out and draw back, the loose separation of lime-ash that makes boiler row slag hole accumulation perhaps makes the bold slagging scorification broken, cooperation purge hole spun high-pressure gas continuously sweeps the near broken lime-ash of boiler row slag hole, strengthens the mobility of lime-ash to having improved mediation efficiency, having realized the automatic mesh of disclosing the sediment, the mediation to boiler row slag hole can be accomplished to the non-stop stove, guarantees the long-term safe economic operation of circulating fluidized bed boiler.

2. The valve head adopts the coniform structure, and the length of boiler slag discharging opening is stretched into to the removal control valve head through the valve rod, controls the clearance size between boiler slag discharging opening inner wall and valve head to control ash accuse valve aperture size, reach the purpose of control lime-ash flow, realize the flow control function of ash accuse valve.

3. Disclose the structure that the sediment pole adopted the segmentation to connect, the pipe cap and the connecting pipe that are close to the setting of high temperature lime-ash adopt high temperature resistant stand wear and tear casting superalloy, make it keep fairly high temperature strength, and keep away from the middle coupling that the high temperature lime-ash set up, steel pipe and afterbody coupling adopt ordinary steel can, make disclose each section of sediment pole can adopt different materials to make according to specific operating mode environment, guarantee to disclose the sediment pole and can last to reduce the material cost of disclosing the sediment pole in the very big degree of operation under the high temperature high strength operating mode, segmentation connection structure is still convenient for change the part of damage, avoid whole change, the replacement cost of disclosing the sediment pole has been reduced.

4. The water-cooling valve rod cools down disclosing sediment pole and valve rod through water-cooled mode, and compressed air's flow also can cool off disclosing sediment pole and valve rod simultaneously, and cooperation water-cooling mode has improved the cooling effect, has prolonged the life who discloses sediment pole and valve rod, and compressed air flows still to play sealed effect disclosing between sediment pole and the valve rod, prevents inside the lime-ash gets into the valve rod, avoids disclosing the influence that the sediment pole received high temperature lime-ash and warp.

5. Disclose the sediment pole setting in the valve rod, the valve rod has the guide effect to disclosing the removal of sediment pole, causes the wear-resisting pouring material of furnace to drop when avoiding disclosing the blind sediment of sediment pole and disclosing the sediment.

6. Realized disclosing the sediment automatically, reduced intensity of labour, swiftly effectively accomplish the mediation of boiler row's cinder notch, avoided the manual work to disclose the sediment and brought the problem that the high temperature lime-ash leaked, reduced unit and personnel's safety risk.

Drawings

FIG. 1 is a schematic view of the working state of a slag poking position of a conical ash control valve with an automatic slag poking function of the present invention;

FIG. 2 is a schematic structural view of a valve rod in the conical ash control valve with an automatic slag poking function of the present invention;

FIG. 3 is a schematic structural view of a slag poking rod in a conical ash control valve with an automatic slag poking function of the present invention;

FIG. 4 is a schematic structural view of a water-cooling valve rod in the conical ash control valve with an automatic slag poking function of the present invention;

FIG. 5 is a schematic view of the fully closed operating state of the conical ash control valve with the automatic slag poking function of the present invention;

FIG. 6 is a schematic view of the fully opened conical ash control valve with an automatic slag poking function of the present invention in a working state;

in the figure, 1-a boiler slag discharge port, 2-a valve seat, 3-an ash control valve discharge port, 4-a valve body, 5-a valve rod, 6-a slag poking rod, 7-a compressed air channel, 8-a purge hole, 9-a valve head, 10-a flexible heat conduction material, 11-a water-cooling valve rod, 12-a heat-resistant high-strength bolt, 13-an outer pipe, 14-an intermediate pipe, 15-an inner pipe, 16-a porous end, 17-a first cooling channel, 18-a second cooling channel, 19-a cooling water inlet, 20-a cooling water outlet, 21-a pipe cap, 22-a connecting pipe, 23-an intermediate pipe joint, 24-a steel pipe, 25-a tail pipe joint, 26-a circular ring plate, 27-a porous end cover I, 28-a porous end cover II and 29-a compressed air pipe, 30-compressed air hole, 31-screw rod, 32-valve rod connecting seat, 33-driving motor, 34-slag poking driving device, 35-flange and 36-valve seat lining pipe.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1 to 6, a toper ash control valve of sediment function is disclosed in area automatically, including disk seat 2 that is equipped with boiler row slag hole 1 and the valve body 4 that is equipped with ash control valve discharge gate 3, still include valve rod 5 and disclose sediment pole 6, valve rod 5 slidable wears to establish in valve body 4, boiler row slag hole 1 is located the removal route of valve rod 5, disclose sediment pole 6 and wear to establish in valve rod 5, disclose sediment pole 6 and can move along the axis of valve rod 5, disclose sediment pole 6 and carry out the breakage through making a round trip to stretch out and draw back to the cubic material in boiler row slag hole 1, disclose sediment pole 6 and seted up compressed air passageway 7, disclose the head of sediment pole 6 and seted up a plurality of blow-off holes 8 that communicate with compressed air passageway 7, blow-off compressed air is used for reinforcing the mobility of broken material in blow-off hole 8. The opening and closing of the boiler slag discharging port 1 are realized through the movement of the valve rod 5, the head of the valve rod 5 extends into the boiler slag discharging port 1 to plug the boiler slag discharging port 1, the closing of the boiler slag discharging port 1 is realized, the valve head 5 exits from the boiler slag discharging port 1 and keeps a certain distance, and the opening of the boiler slag discharging port 1 is realized; when poking slag: the valve rod 5 drives the slag poking rod 6 to move to the position near the boiler slag discharging port 1, so that the moving distance of the slag poking rod 6 is reduced, the length of the slag poking rod 6 is reduced, the valve rod 5 is positioned in contact with the boiler slag discharging port 1, a gap for ash circulation is formed between the boiler slag discharging port 1 and the valve rod 5, the slag poking rod 6 extends deep into the boiler slag discharging port 1 at the moment, material stirring is completed through back and forth expansion of the slag poking rod 6, ash accumulated in the boiler slag discharging port 1 is separated loosely or large blocks of slag are crushed, the slag poking rod 6 is connected with an external compressed air device, compressed air flows into a compressed air channel 7 and finally flows out of a blowing hole 8, and the crushed ash near the boiler slag discharging port is continuously blown by high-pressure gas sprayed through the blowing hole 8, so that the flowability of the ash is enhanced; improve the mobility of broken back lime-ash in broken lime-ash, make the quick breakage of lime-ash discharge from boiler meeting cinder notch 1 to having improved mediation efficiency, having realized the automatic purpose of disclosing the sediment, not stopping the stove can accomplish the mediation to boiler row cinder notch, guarantee the long-term safe economic operation of circulating fluidized bed boiler.

Further, as shown in fig. 2, the valve rod 5 includes a conical valve head 9 and a water-cooling valve rod 11, one end of the water-cooling valve rod 11 is embedded in the large-diameter end of the valve head 9, the water-cooling valve rod 11 and the valve head 9 are tightly pressed and connected through a heat-resistant high-strength bolt 12, and the water-cooling valve rod 11 is connected with a valve rod driving device. The valve head 9 is screwed into the boiler slag discharging port 1, a gap channel for ash circulation is formed by the inner wall of the boiler slag discharging port 1 and the conical surface of the valve head 9, and the valve head 9 is of a conical surface structure, so that the gap channel is gradually reduced along with the depth of the valve head 9 until the valve head 9 is abutted against the end surface of the boiler slag discharging port 1, the boiler slag discharging port 1 is plugged, and the ash flow regulation or switching is completed by the screwing depth of the valve head 9 into the boiler slag discharging port 1; because valve head 9 will be direct and the contact of high temperature lime-ash, consequently valve head 9 adopts high temperature resistant wear resistant casting superalloy, guarantees that valve head 9 has fairly high temperature resistant and wear resistant intensity, prolongs valve head 9's life, accessible water-cooling valve rod 11 cools off valve head 9 simultaneously, reduces valve head 9's temperature, has further prolonged valve head 9's life, avoids frequently changing the inconvenience that valve head 9 brought and influences the normal operating of grey accuse valve.

Further, a flexible heat conduction material 10 is arranged between the water-cooled valve rod 11 and the valve head 9, and the flexible heat conduction material 10 is a material having both a heat conduction characteristic and an extension deformable characteristic. Can be so when using through setting up flexible heat conduction material 10, can carry out abundant heat exchange between water-cooling valve rod 1 and the valve head 2, water-cooling valve rod 1 can be effectual cools off valve head 2, avoids valve head 9 to use for a long time down, because of the cooling is insufficient and easy scaling loss, deformation scheduling problem appear, prolongs the life of high temperature lime-ash valve. Meanwhile, the water-cooling valve rod 11 is embedded in the valve head 9, the water-cooling valve rod 11 and the flexible heat conduction material 10 are in close contact and are in a compression state, when the valve head 9 is fully cooled, the valve head can deform under the effect of expansion with heat and contraction with cold, and the deformation is small because the valve head is supported by the water-cooling valve rod 11 and the flexible heat conduction material 10 in the valve head in the deformation process, so that the accuracy of flow regulation through the valve head 9 is ensured, and the long-term normal and stable use of the ash valve is ensured; one or both of red copper, graphite are chooseed for use to flexible heat conduction material 10, when the assembly, pack this flexible heat conduction material 10 in the valve head 9 earlier, and the water-cooling valve rod 11 closely pressfitting with valve head 2 through the press again ensures that flexible heat conduction material 10 fully extends under the extrusion for keep abundant contact between the crystal atomic structure of water-cooling valve rod 11 and valve head 9 and flexible heat conduction material 10, thereby ensure its heat-conducting efficiency.

Further, as shown in fig. 3, the slag poking rod 6 comprises a pipe cap 21, a connecting pipe 22, an intermediate pipe joint 23, a steel pipe 24 and a tail pipe joint 25, a blowing hole 8 is formed in the pipe cap 21, the pipe cap 21 is in threaded connection with the connecting pipe 22, the connecting pipe 22 is detachably connected with the steel pipe 24 through the intermediate pipe joint 23, one end, away from the connecting pipe 22, of the steel pipe 24 is connected with the tail pipe joint 25, the tail pipe joint 25 is connected with a slag poking driving device 34, and the slag poking driving device 34 is used for driving the slag poking rod 6 to perform reciprocating linear motion. The connecting pipe 22 is in threaded connection with the middle pipe joint 23, the steel pipe 24 is fixedly connected with the middle connecting joint 23 through welding, and the tail pipe joint 25 is welded at the tail part of the steel pipe 24, so that the fragile pipe cap 21 directly contacted with high-temperature ash slag is detachably connected with the connecting pipe 22, the pipe cap 21 and the connecting pipe 22 are convenient to replace, and the middle pipe joint 23, the steel pipe 24 and the tail pipe joint 25 are fixedly connected through welding and used for ensuring the integral stability and the connection strength of the slag poking rod 6; valve head 9 sets up the reaming of a diameter and connecting pipe 22 size looks adaptation, it can make to disclose sediment pole 6 and make a round trip to stretch out and draw back in the reaming, reduce the clearance between connecting pipe 22 and the reaming simultaneously, avoid high temperature lime-ash to enter into valve rod 5 in a large number and disclose in the clearance that sediment pole 6 formed, when disclosing the sediment, pipe cap 21 and connecting pipe 22 will stretch out valve rod 5 and directly contact with high temperature lime-ash, consequently, for guaranteeing that pipe cap 21 and connecting pipe 22 are not damaged by high temperature lime-ash, will disclose sediment pole 6 and adopt the structure of segmentation connection, pipe cap 21 and connecting pipe 22 that are close to the setting of high temperature lime-ash adopt high temperature alloy of high temperature resistant abrasion casting, make it keep quite high temperature intensity, and keep away from the middle coupling 23 that high temperature lime-ash set up, steel pipe 24 and afterbody coupling 25 adopt ordinary steel can, make to disclose each section of sediment pole 6 and can adopt different materials to make according to specific operating mode environment, guarantee to disclose sediment pole 6 can last to run under high temperature high strength operating condition greatly reduce to disclose sediment pole in the degree The material cost of, the segmentation connection structure is still convenient for change the part of damage, avoids whole change, has reduced the replacement cost of disclosing sediment pole 6.

Further, as shown in fig. 4, the water-cooled valve rod 11 includes an outer tube 13, an intermediate tube 14, an inner tube 15 and a porous tip 16, one end of the outer tube 13 is fixed to the porous tip 16, the water-cooled valve rod 11 is embedded into the valve head 9 through the porous tip 16, the intermediate tube 14 is inserted into the outer tube 13, a first cooling channel 17 is formed between the intermediate tube 14 and the outer tube 13, the inner tube 15 is inserted into the intermediate tube 14, a second cooling channel 18 communicated with the first cooling channel 17 is formed between the inner tube 15 and the intermediate tube 14, a cooling water inlet 19 communicated with the first cooling channel 17 is formed on the outer wall of the outer tube 13, a cooling water outlet 20 communicated with the second cooling channel 18 is formed on the outer wall of the intermediate tube 14, one end of the inner tube 15 is fixed to the inner wall of the porous tip 16, and the slag poking rod 6 is inserted into the inner tube 15. The first cooling channel 17 is communicated with the second cooling channel 18 at one end close to the porous tip 16, the cooling water inlet 19 is arranged at one end of the outer pipe 13 far away from the porous tip 16, and the cooling water outlet 20 is arranged at one end of the middle pipe 14 far away from the porous tip 16, so that cooling water is accumulated in the first cooling channel 17 and the second cooling channel 18, and when the first cooling channel 17 and the second cooling channel 18 are filled with cooling water, the cooling water flows out from the cooling water outlet 20, and the comprehensive cooling of the valve rod 5 is realized; the cooling water inlet 19 is arranged at the bottom of the outer pipe 13, and the cooling water outlet 20 is arranged at the top of the middle pipe 14, and a pure countercurrent mode is adopted, so that the heat exchange is uniform, the cooling effect is good, and the cooling device is safe and reliable.

Furthermore, one end of the outer pipe 13 far away from the porous end head 16 is fixed with a first porous end cover 27, the middle pipe 14 penetrates into the outer pipe 13 from the first porous end cover 27 and is fixed with the first porous end cover 27, one end of the middle pipe 14 far away from the porous end head 16 is fixed with a second porous end cover 28, the middle pipe 14 arranged inside the outer pipe 13 is supported through the first porous end cover 27, one end of the first cooling channel 17 far away from the porous end head 16 is blocked, cooling water flows from one end of the first cooling channel 17 to the other end and then flows into the second cooling channel 18, the inner pipe 15 penetrates into the middle pipe 14 from the second porous end cover 28 and is fixed with the second porous end cover 28, the inner pipe 15 arranged inside the middle pipe 14 is supported through the second porous end cover 28, one end of the second cooling channel 18 far away from the porous end head 16 is blocked, and cooling water flows from one end of the second cooling channel 18 to the other end, finally, the cooling water flows out from the cooling water outlet 20, so that the cooling water flows through all parts of the valve rod 5 to realize comprehensive cooling; the inner tube 15 is communicated with a compressed air tube 29, the slag poking rod 6 is provided with two compressed air holes 30 communicated with the compressed air channel 7, the two compressed air holes 30 are respectively arranged at two ends of the steel tube 24, the compressed air tube 29 is used for communicating a compressed air device, the compressed air device can be a compressed fan or an air pump, the compressed air output by the compressed air device enters a gap between the inner tube 15 and the slag poking rod 6 through the compressed air tube 29, the compressed air has two modes to flow into the slag discharging port 1 of the boiler, and one of the two modes is: one part of compressed air flows to a boiler slag discharging port 1 through a gap between an inner pipe 15 and a slag poking rod 6, and the other part is as follows: the other part of the compressed air flows into the compressed air channel 7 through the compressed air holes 30 and is blown out from the blowing holes 8, so that the compressed air enters the boiler slag discharging port 1 in a mode of being diffused all around, and the blowing effect is improved; simultaneously sweep the in-process of sediment through compressed air, can also carry out the forced air cooling to valve rod 5 and disclose sediment pole 6, the water-cooling mode of cooperation water-cooling valve rod 11 has improved the cooling effect, has prolonged the life who discloses sediment pole 6 and valve rod 5, and compressed air flows still plays sealed effect between disclosing sediment pole 6 and valve rod 5, prevents that the sediment from getting into the inside of inner tube 15, avoids disclosing the influence that sediment pole 6 received high temperature sediment and warp.

Further, the steel pipe 24 is fixedly sleeved with a plurality of circular ring plates 26, and graphite packing is filled between every two adjacent circular ring plates 26. The ring plate 26 is provided with four, and two liang of constituteing are a set of, and the distance between every group ring plate 26 is 16mm, fills the graphite packing between two ring plates 26 of every group for improve the leakproofness between 15 inner walls of inner tube and the 24 outer walls of steel pipe, prevent that the lime-ash from getting into the wearing and tearing that cause inner tube 15 and disclose sediment pole 6. A gasket and a graphite bearing are arranged between the end part of the water-cooling valve rod 11 close to the valve head 9 and the pipe cap 21 and used for supporting the slag poking rod 6 and sealing a gap formed by the outer wall of the slag poking rod 6 and the inner wall of the inner pipe 15 to prevent ash from entering.

Further, as shown in fig. 5, the valve rod driving device includes a screw rod 31, a valve rod connecting seat 32 and a driving motor 33, one end of the screw rod 31 is rotatably connected with the valve body 4, the other end of the screw rod is connected with an output shaft of the driving motor 33, the valve rod connecting seat 32 is in threaded connection with the screw rod 31, and the valve rod connecting seat 32 is fixedly sleeved on the outer tube 13. The one end that valve block 4 kept away from disk seat 2 is equipped with flange 35, and the through-hole that supplies valve rod 5 to pass is seted up to flange 35, and lead screw 31 rotates with flange 35 through the bearing that sets up on flange 35 to be connected, and driving motor 33 drives lead screw 31 and rotates to drive valve rod connecting seat 32 and remove on lead screw 31, and then drive valve rod 5 and remove in valve block 4, realize the switch or the flow control of boiler slag notch 1.

Further, the slag poking driving device 34 adopts a cylinder or a linear reciprocating motor. The slag poking rod 6 is driven by the cylinder or the linear reciprocating motor to stretch back and forth in the valve rod 5, so that the slag poking operation is completed.

Further, the inner wall of the boiler slag discharging port 1 is fixed with a valve seat lining pipe 36, the valve seat lining pipe 36 is made of high-temperature-resistant and wear-resistant cast high-temperature alloy, the valve seat lining pipe 36 is provided with a plurality of blowing small holes along the circumferential direction, the blowing small holes are communicated with the compressed air pipe 29 through an air pipe, and when the boiler slag discharging port 1 is opened and closed through the valve rod 5, the blowing small holes are used for blowing materials between the valve seat 2 and the valve head 9 for a short time, so that the conical valve head 9 is guaranteed to be closed in place.

To sum up, the utility model relates to a toper ash control valve of sediment function is disclosed automatically in area is under normal operating condition, and valve rod drive arrangement drives valve rod 5 and removes, makes valve head 9 withdraw from boiler row's cinder notch 1 to keep the certain distance, this distance and boiler row's cinder notch 1 size cooperation guarantee all can pass through from the lime-ash homoenergetic that boiler row's cinder notch entered ash control valve, the jam can not appear. An included angle of about 45 degrees is formed between the axis of the ash control valve discharge port 3 and the valve rod, and high-temperature furnace slag enters the slag falling pipe after coming out of the ash control valve discharge port 3 and then enters subsequent slag cooling equipment and subsequent slag conveying equipment, as shown in the fully-opened position of the valve in fig. 6. When the conical ash control valve needs to be closed, the valve rod driving device drives the valve rod 5 to move, the head of the valve head 9 extends into the boiler slag discharge port 1, the conical surface of the valve head is matched with the valve seat lining pipe 36, and the inlet of the ash control valve is closed, as shown in the fully closed position of the valve in fig. 5.

When the blockage condition appears in circulating fluidized bed boiler slag discharge port 1, boiler operation control system starts toper ash control valve rod drive arrangement, valve rod drive arrangement drives valve rod 5 and removes, make valve head 9 be located the full closed position and retreat 100mm department, then disclose the start of sediment pole drive arrangement, disclose sediment pole 6 and stretch out the inside that valve head 9 got into boiler slag discharge port by disclosing the drive arrangement of sediment pole, flexible completion material stirring that makes a round trip, make the loose separation of accumulation sediment of boiler slag discharge port 1 or make the bold slagging-off broken, disclose the compressed air hole on sediment pole cap 21 simultaneously and continuously sweep the lime-ash near boiler slag discharge port 1, the mobility of reinforcing lime-ash, it is shown to disclose the sediment position as the valve of figure 1, realize disclosing the sediment automatically, swiftly effectively accomplish the mediation. The pipe cap 21 of the slag poking rod and the compressed air at the position of the steel pipe 24 are normally opened, so that the slag poking rod has a purging effect and a sealing and cooling effect, prevents the slag from entering the valve rod 5 and reduces the deformation of the slag poking rod 6.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (10)

1. The conical ash control valve with the automatic slag poking function comprises a valve seat (2) provided with a boiler slag discharging port (1) and a valve body (4) provided with an ash control valve discharging port (3), and is characterized by further comprising a valve rod (5) and a slag poking rod (6), wherein the valve rod (5) can slidably penetrate through the valve body (4), the boiler slag discharging port (1) is located on a moving path of the valve rod (5), the slag poking rod (6) penetrates through the valve rod (5), the slag poking rod (6) can move along an axis of the valve rod (5), the slag poking rod (6) can crush blocky materials in the boiler slag discharging port (1) through back and forth expansion, the slag poking rod (6) is provided with a compressed air channel (7), the head of the slag poking rod (6) is provided with a plurality of blowing holes (8) communicated with the compressed air channel (7), compressed air is blown out of the blowing holes (8) to enhance the flowability of the crushed materials.

2. The conical ash control valve with the automatic slag poking function according to claim 1, wherein the slag poking rod (6) comprises a pipe cap (21), a connecting pipe (22), a middle pipe joint (23), a steel pipe (24) and a tail pipe joint (25), the blowing hole (8) is formed in the pipe cap (21), the pipe cap (21) is in threaded connection with the connecting pipe (22), the connecting pipe (22) is detachably connected with the steel pipe (24) through the middle pipe joint (23), one end, far away from the connecting pipe (22), of the steel pipe (24) is connected with the tail pipe joint (25), the tail pipe joint (25) is connected with a slag poking driving device (34), and the slag poking driving device (34) is used for driving the slag poking rod (6) to do reciprocating linear motion.

3. The conical ash control valve with the automatic slag poking function according to claim 1, wherein the valve rod (5) comprises a conical valve head (9) and a water-cooling valve rod (11), one end of the water-cooling valve rod (11) is embedded into the large-diameter end of the valve head (9), the water-cooling valve rod (11) is in compression connection with the valve head (9) through a heat-resistant high-strength bolt (12), and the water-cooling valve rod (11) is connected with a valve rod driving device.

4. The conical ash control valve with the automatic slag poking function according to claim 3, characterized in that a flexible heat conducting material (10) is arranged between the water-cooled valve rod (11) and the valve head (9), and the flexible heat conducting material (10) is a material having both heat conducting property and extensional deformable property.

5. The conical ash control valve with the automatic slag poking function according to claim 3, characterized in that the water-cooling valve rod (11) comprises an outer pipe (13), a middle pipe (14), an inner pipe (15) and a perforated end (16), one end of the outer pipe (13) is fixed with the perforated end (16), the water-cooling valve rod (11) is embedded into the valve head (9) through the perforated end (16), the middle pipe (14) is arranged in the outer pipe (13) in a penetrating manner, a first cooling channel (17) is formed between the middle pipe (14) and the outer pipe (13), the inner pipe (15) is arranged in the middle pipe (14) in a penetrating manner, and a second cooling channel (18) communicated with the first cooling channel (17) is formed between the inner pipe (15) and the middle pipe (14).

6. The conical ash control valve with the automatic slag poking function according to claim 5, characterized in that the outer wall of the outer pipe (13) is provided with a cooling water inlet (19) communicated with the first cooling channel (17), the outer wall of the intermediate pipe (14) is provided with a cooling water outlet (20) communicated with the second cooling channel (18), one end of the inner pipe (15) is fixed with the inner wall of the porous tip (16), and the slag poking rod (6) is arranged in the inner pipe (15) in a penetrating manner.

7. The conical ash control valve with the automatic slag poking function according to claim 6, wherein one end of the outer pipe (13) far away from the porous end head (16) is fixed with a porous end cover I (27), the middle pipe (14) penetrates into the outer pipe (13) from the porous end cover I (27) and is fixed with the porous end cover I (27), one end of the middle pipe (14) far away from the porous end head (16) is fixed with a porous end cover II (28), the inner pipe (15) penetrates into the middle pipe (14) from the porous end cover II (28) and is fixed with the porous end cover II (28), a compressed air pipe (29) is communicated with the inner pipe (15), and a compressed air hole (30) communicated with the compressed air channel (7) is formed in the slag poking rod (6).

8. The conical ash control valve with the automatic slag poking function according to claim 7, wherein the valve rod driving device comprises a screw rod (31), a valve rod connecting seat (32) and a driving motor (33), one end of the screw rod (31) is rotatably connected with the valve body (4), the other end of the screw rod (31) is connected with an output shaft of the driving motor (33), the valve rod connecting seat (32) is in threaded connection with the screw rod (31), and the valve rod connecting seat (32) is fixedly sleeved on the outer pipe (13).

9. The conical ash control valve with the automatic slag poking function as claimed in claim 2, wherein a plurality of annular plates (26) are fixedly sleeved on the steel pipe (24), and a graphite packing is filled between two adjacent annular plates (26).

10. The conical ash control valve with the automatic slag poking function as claimed in claim 2, wherein the slag poking driving device (34) adopts a cylinder or a linear reciprocating motor.

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