阅读说明：本技术 一种裂解生产线用回热循环风机 (Regenerative circulating fan for cracking production line ) 是由 沈建峰 关丽喆 杨国宁 刑政 左宪林 张鹏 汪兴家 张宏伟 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种裂解生产线用回热循环风机,涉及风机技术领域。包括过流部件,过流部件包括机壳和设于机壳内的叶轮,叶轮包括依次连接的前盘、叶片、后盘,设于前盘上的前盘进风孔通过管状结构的集流器与设于机壳上的机壳进风孔连通,所述集流器在靠近所述前盘的一端设有密封圈,密封圈通过弹性件与集流器滑动连接,前盘在靠近集流器的一侧设有一端敞口的包围筒,包围筒的筒底与前盘连接,包围筒的筒底设有与所述前盘进风孔连通的内孔,包围筒的筒底与密封圈配合。本发明能够避免烟气二次循环流动。(The invention discloses a regenerative circulating fan for a cracking production line, and relates to the technical field of fans. Including overflowing the part, overflowing the impeller that the part includes the casing and locates in the casing, the impeller is including the front disk, blade, the back dish that connect gradually, and the front disk fresh air inlet on locating the front disk passes through tubular structure's collector and locates the casing fresh air inlet intercommunication on the casing, the collector is being close to the one end of front disk is equipped with the sealing washer, and the sealing washer passes through elastic component and collector sliding connection, and the front disk is equipped with the open encirclement section of thick bamboo in one side that is close to the collector, and the bobbin base that surrounds a section of thick bamboo is connected with the front disk, the bobbin base that surrounds a section of thick bamboo be equipped with the hole of front disk fresh air inlet intercommunication, the bobbin base and the. The invention can avoid the secondary circulation flow of the flue gas.)

1. The utility model provides a pyrolysis is backheat circulating fan for production line, includes and overflows the part, overflows the impeller that the part includes the casing and locates in the casing, and the impeller is including the front disk, blade, the back dish that connect gradually, locates the front disk fresh air inlet on the front disk and through tubular structure's collector and the casing fresh air inlet intercommunication of locating on the casing, its characterized in that, the collector is being close to the one end of front disk is equipped with the sealing washer, and the sealing washer passes through elastic component and collector sliding connection, and the front disk is equipped with the open enclosure section of thick bamboo in one side that is close to the collector, and the bobbin base of enclosure section of thick bamboo is connected with the front disk, the bobbin base of enclosure section of thick bamboo be equipped with the hole of front disk fresh air inlet intercommunication, the.

2. The regenerative cycle fan for the pyrolysis production line of claim 1, wherein the sealing ring is a copper ring.

3. A regenerative cycle fan for a pyrolysis production line according to claim 1 wherein the seal ring is provided with a guide slot and the collector is provided with a guide member engaged with the guide slot.

4. The regenerative cycle fan for the pyrolysis production line of claim 1, wherein the front disk is provided with an insertion hole, and the vane is provided with an auxiliary vane which is matched with the insertion hole at the middle part of one side close to the front disk.

5. The regenerative cycle fan for the cracking production line according to claim 1, wherein the casing is provided with an access window, an access cover plate is arranged in the access window, the access cover plate is connected with the casing, the access cover plate is provided with the casing air inlet, a first bearing ring and a second bearing ring are sequentially arranged between the access window and the access cover plate from inside to outside, one end of the first bearing ring is connected with the access cover plate, a first flange is arranged at one end of the first bearing ring far away from the access cover plate, one end of the second bearing ring is connected with the casing, a second flange is arranged at one end of the second bearing ring far away from the casing, the second flange is arranged at one side of the first flange close to the first bearing ring, and the first flange is connected with the second flange;

the heat preservation assembly and the sealing assembly are arranged on the outer side of the casing, the heat preservation assembly comprises a heat preservation layer and a protection plate, the heat preservation layer and the protection plate are sequentially arranged on the outer side of the casing and the outer side of the maintenance cover plate, the heat preservation layer arranged on the outer side of the casing is arranged between the second flange and the casing, the heat preservation layer is provided with a first current collector mounting hole communicated with an air inlet hole of the casing, the heat preservation layer is provided with a heat preservation layer shaft hole, the heat preservation layer shaft hole is communicated with a casing shaft hole arranged on the casing, the protection plate is provided with a second current collector mounting hole communicated with the first current collector mounting hole, the protection plate is provided with a protection plate shaft hole;

the sealing assembly comprises a sleeve, a sealing cover, a packing and a gland which are sequentially connected, the sleeve is sequentially matched with a protective plate shaft hole, a heat preservation layer shaft hole and a casing shaft hole from outside to inside, the sleeve is connected with the casing, the sealing cover is connected with the protective plate, and the sleeve, the sealing cover, the packing and the gland are all matched with a transmission shaft used for driving the impeller to rotate.

6. The regenerative cycle fan for the pyrolysis production line according to claim 5, wherein the heat insulation assembly further comprises a reinforcing rib and a fixing plate, the reinforcing rib and the fixing plate are both arranged in the heat insulation layer, one end of the reinforcing rib is connected with the casing, the reinforcing rib is connected with the fixing plate at the end far away from the casing, and the guard plate is sequentially connected with the heat insulation layer and the fixing plate through fasteners.

7. The regenerative cycle fan for the pyrolysis production line according to claim 5, wherein a first sealing ring is arranged between the first flange and the second flange, the casing is provided with a second sealing ring at a side far away from the heat insulation layer, and the second sealing ring is provided with a pressing ring at a side far away from the casing.

8. The regenerative cycle fan for the cracking production line according to claim 7, wherein the second flange is provided with a first nut at a side away from the first sealing ring, the second flange is provided with a second flange connecting hole, the first sealing ring is provided with a first sealing ring connecting hole, the first flange is provided with a first flange connecting hole, the first flange is provided with a first bolt, and the first bolt is sequentially matched with the first flange connecting hole, the first sealing ring connecting hole, the second flange connecting hole and the first nut;

the casing is being close to one side of heat preservation is equipped with the second bolt, and the casing is equipped with the casing connecting hole, the second sealing washer is equipped with second sealing washer connecting hole, the clamping ring is equipped with the clamping ring connecting hole, and the clamping ring is equipped with the second nut in the one side of keeping away from the second sealing washer, and the second bolt cooperates with casing connecting hole, second sealing washer connecting hole, clamping ring connecting hole, second nut in proper order.

Technical Field

The invention relates to the technical field of fans, in particular to a regenerative circulating fan for a cracking production line.

Background

The cracking technology is applied to the fields of waste tires, waste oil sludge, waste glass fiber reinforced plastics, biomass treatment and the like. The cracking technology mainly comprises a normal pressure inert gas pyrolysis technology, a vacuum pyrolysis technology and a molten salt pyrolysis technology. These techniques require heating the waste to 500-600 c to decompose it into solid residues and high temperature flue gases (500-600 c) containing harmful volatile organic compounds such as dioxins. At the moment, the regenerative circulating fan is needed to convey the high-temperature flue gas to the cracking kettle again, so that the waste of heat energy is reduced, and the purpose of recycling the high-temperature flue gas is realized.

As shown in fig. 1, the regenerative cycle fan includes a base 100, an overflowing part, a bearing housing 200, a coupling 300, and a motor 400. The flow passage component comprises a machine shell 1 and an impeller 2 arranged in the machine shell 1. The housing 1, the bearing housing 200, the coupling 300, and the motor 400 are mounted on the upper end surface of the base 100. The motor 400 drives the impeller 2 to rotate via the drive shaft 500.

As shown in FIG. 4, the impeller 2 comprises a front disk 2-1, blades 2-2 and a rear disk 2-3 which are welded and fixed in sequence. The middle part of the rear disc 2-3 is riveted with a hub 2-3-1 which is used for being matched with the transmission shaft 500, a plurality of blades 2-2 are arranged, and all the blades 2-2 are radially distributed by taking the hub 2-3-1 as the center. As shown in fig. 5, the front plate air inlet holes 2-1-1 arranged on the front plate 2-1 are communicated with the machine shell air inlet holes 1-2-1 arranged on the machine shell 1 through the current collector 3, and the current collector 3 is of a tubular structure.

As shown in fig. 5, the header 3 is inserted into the front disk air inlet holes 2-1-1 at an end adjacent to the front disk 2-1. As shown in fig. 4, on one hand, since the impeller 2 is a rotating part and the collector 3 is a stationary part, in order to avoid the stationary collector 3 from interfering with the rotation of the impeller 2, a gap is required between the collector 3 and the wall of the front plate air inlet 2-1-1; on the other hand, the temperature of the flue gas can reach 500-600 ℃, so in order to meet the deformation of the heat expansion of the current collector 3 and the front disc 2-1, a gap is needed between the current collector 3 and the wall of the air inlet hole 2-1-1 of the front disc.

However, as shown in fig. 4 and 5, the existence of the gap makes the flue gas flowing out from the outlet of the impeller 2 and entering the casing 1 not immediately flow out from the casing air outlet hole arranged on the casing 1, but enters the impeller 2 again from the gap between the wall of the front disc air inlet hole 2-1-1 and the collector 3, so as to cause secondary circulation flow of the flue gas and reduce the efficiency of the regenerative circulating fan.

Therefore, how to avoid the secondary circulation of the flue gas is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the regenerative circulating fan for the cracking production line, which can avoid secondary circulating flow of flue gas.

In order to realize the purpose, the invention provides the following technical scheme:

the utility model provides a pyrolysis is backheat circulating fan for production line, includes and overflows the part, overflows the impeller that the part includes the casing and locates in the casing, and the impeller is including the front disk, blade, the back dish that connect gradually, locates the front disk fresh air inlet on the front disk and pass through tubular structure's collector and locate the casing fresh air inlet intercommunication on the casing, the collector is being close to the one end of front disk is equipped with the sealing washer, and the sealing washer passes through elastic component and collector sliding connection, and the front disk is equipped with the open surrounding tube in one side that is close to the collector, and the bobbin base and the front disk of surrounding tube are connected, the bobbin base of surrounding tube be equipped with the hole of front disk fresh air inlet intercommunication, the bobbin base and the sealing washer cooperation of surrounding tube.

Furthermore, the sealing ring is a copper ring.

Furthermore, the sealing ring is provided with a guide long hole, and the current collector is provided with a guide piece matched with the guide long hole.

Furthermore, the front disc is provided with a jack, and the middle part of one side of the blade close to the front disc is provided with an auxiliary blade matched with the jack.

Furthermore, the machine shell is provided with an overhaul window, an overhaul cover plate is arranged in the overhaul window and connected with the machine shell, the overhaul cover plate is provided with the machine shell air inlet hole, a first bearing ring and a second bearing ring are sequentially arranged between the overhaul window and the overhaul cover plate from inside to outside, one end of the first bearing ring is connected with the overhaul cover plate, a first flange is arranged at one end, away from the overhaul cover plate, of the first bearing ring, one end of the second bearing ring is connected with the machine shell, a second flange is arranged at one end, away from the machine shell, of the second bearing ring, the second flange is arranged at one side, close to the first bearing ring, of the first flange, and the first flange is connected with the second flange; the heat preservation assembly and the sealing assembly are arranged on the outer side of the casing, the heat preservation assembly comprises a heat preservation layer and a protection plate, the heat preservation layer and the protection plate are sequentially arranged on the outer side of the casing and the outer side of the maintenance cover plate, the heat preservation layer arranged on the outer side of the casing is arranged between the second flange and the casing, the heat preservation layer is provided with a first current collector mounting hole communicated with an air inlet hole of the casing, the heat preservation layer is provided with a heat preservation layer shaft hole, the heat preservation layer shaft hole is communicated with a casing shaft hole arranged on the casing, the protection plate is provided with a second current collector mounting hole communicated with the first current collector mounting hole, the protection plate is provided with a protection plate shaft hole; the sealing assembly comprises a sleeve, a sealing cover, a packing and a gland which are sequentially connected, the sleeve is sequentially matched with a protective plate shaft hole, a heat preservation layer shaft hole and a casing shaft hole from outside to inside, the sleeve is connected with the casing, the sealing cover is connected with the protective plate, and the sleeve, the sealing cover, the packing and the gland are all matched with a transmission shaft used for driving the impeller to rotate.

Further, the heat preservation subassembly still includes strengthening rib and fixed plate, and strengthening rib and fixed plate are all located in the heat preservation layer, the one end of strengthening rib with the casing is connected, and the strengthening rib is connected with the fixed plate in the one end of keeping away from the casing, the backplate passes through the fastener and is connected with heat preservation, fixed plate in proper order.

Furthermore, a first sealing ring is arranged between the first flange and the second flange, a second sealing ring is arranged on one side, far away from the heat preservation layer, of the machine shell, and a pressing ring is arranged on one side, far away from the machine shell, of the second sealing ring.

Furthermore, a first nut is arranged on one side, far away from the first sealing ring, of the second flange, the second flange is provided with a second flange connecting hole, the first sealing ring is provided with a first sealing ring connecting hole, the first flange is provided with a first flange connecting hole, the first flange is provided with a first bolt, and the first bolt is sequentially matched with the first flange connecting hole, the first sealing ring connecting hole, the second flange connecting hole and the first nut; the casing is being close to one side of heat preservation is equipped with the second bolt, and the casing is equipped with the casing connecting hole, the second sealing washer is equipped with second sealing washer connecting hole, the clamping ring is equipped with the clamping ring connecting hole, and the clamping ring is equipped with the second nut in the one side of keeping away from the second sealing washer, and the second bolt cooperates with casing connecting hole, second sealing washer connecting hole, clamping ring connecting hole, second nut in proper order.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can lead the sealing ring to be contacted with the bottom of the surrounding cylinder, thereby being capable of blocking the gap between the current collector and the hole wall of the front disc air inlet hole, leading the smoke flowing out of the outlet of the impeller and entering the shell not to enter the impeller again from the gap between the hole wall of the front disc air inlet hole and the current collector, avoiding the secondary circulation flow of the smoke and improving the efficiency of the invention.

In addition, the bottom of the surrounding cylinder is only contacted with the sealing ring, and when the impeller rotates, the fixed current collector cannot rotate along with the impeller, so that the current collector can be prevented from hindering the rotation of the impeller.

Furthermore, because the sealing ring is positioned in the surrounding cylinder, the inner cavity of the surrounding cylinder can also provide a thermal expansion deformation space for the sealing ring and the current collector.

In addition, in the process of rotation of the impeller, the impeller vibrates, and then the front disc is close to or far away from the current collector, but no matter the front disc is close to the current collector or the front disc is far away from the current collector, the sealing ring can slide along the current collector and is always contacted with the bottom of the surrounding cylinder, so that on one hand, the reliability of the sealing ring for blocking a gap between the current collector and the hole wall of the air inlet hole of the front disc is ensured, the reliability of avoiding secondary circulation flow of smoke is improved, and the efficiency of the invention is further improved; on the other hand, no matter the front disc is close to the current collector or the front disc is far away from the current collector, the sealing ring can slide along the current collector, so that the acting force between the sealing ring and the surrounding cylinder is reduced, the friction between the sealing ring and the surrounding cylinder is reduced, the noise and the vibration generated by the friction between the sealing ring and the surrounding cylinder are reduced, the stability of the rotation of the impeller is improved, the operation of the impeller is more stable and reliable, the vibration and the abrasion of the impeller are reduced, the service life of the impeller is prolonged, the cost consumed by maintenance of the impeller is reduced, and resources are saved.

2. Even when the impeller expands under heat, the sealing ring adopts the soft copper ring, so that the copper ring is only rubbed off by the surrounding cylinder by one layer, and the copper ring and the surrounding cylinder are not subjected to rigid friction for a long time, so that the noise is further reduced, the rotation stability of the impeller is further improved, the operation of the impeller is further more stable and reliable, the vibration abrasion of the impeller is further reduced, the service life of the impeller is further prolonged, the cost consumed by maintaining the impeller is further reduced, and resources are saved.

3. According to the invention, through arranging the guide long holes and the guide pieces, the accuracy of sliding the sealing ring in the direction close to or far away from the front disc can be improved, the phenomenon that the loss of the sealing ring is aggravated due to the fact that the sealing ring rotates around the current collector is avoided, the service life of the sealing ring is prolonged, the frequency of replacing the sealing ring by disassembling and assembling the shell is reduced, the cost is further reduced, resources are saved, the operation period of the invention is prolonged, and the efficiency is further improved.

4. By arranging the jacks and the auxiliary blades, on one hand, when the impeller rotates, the auxiliary blades extending out of the jacks are utilized to scatter the smoke in the turbulent flow area, so that the smoke in the casing can quickly flow out of the casing, and the efficiency of the invention is further improved. On the other hand, the auxiliary blade and the front disc can be welded and fixed at the position, which is not easy to weld, of the middle part of the blade and the cover plate, and the auxiliary blade and the front disc are welded and fixed at the side, which is extended out of the jack, of the auxiliary blade, so that the blade and the front disc can be welded and fixed at the side, which is close to the front disc, of the blade, the strength and the rigidity of the blade and the front disc which are fixed together are improved, the blade is prevented from being distorted and deformed in the thermal expansion process, the center of gravity of the impeller is prevented from being deviated, the rotating stability of the impeller is further improved, the vibration abrasion of the impeller is further reduced, the noise is further reduced, the service life of the impeller is further prolonged, the.

5. On one hand, the maintenance cover plate can be conveniently disassembled and assembled, so that the impeller in the shell can be conveniently maintained, and the maintenance efficiency is improved; on the other hand, can make the heat preservation in the heat preservation subassembly cover casing and maintenance apron completely, not only reduce the heat loss of flue gas in the casing, improve heat utilization efficiency, still avoid scalding the staff.

6. According to the invention, the reinforcing ribs and the fixing plate are arranged, so that the heat-insulating layer can be tightly attached to the shell and the maintenance cover plate, the heat-insulating effect of the heat-insulating layer is improved, the heat loss is further reduced, the heat utilization efficiency is further improved, the cost is further reduced, and the resources are saved.

7. By arranging the first sealing ring and the second sealing ring, the sealing effect of the invention can be further improved, and heat loss is further reduced, so that the heat utilization efficiency is further improved, the cost is further reduced, and the resources are saved.

8. According to the invention, the first bolt and the first nut are arranged, so that the overhaul cover plate and the shell can be further conveniently disassembled, the disassembly and assembly efficiency is improved, and the impeller in the shell can be further conveniently overhauled and maintained. Through setting up second bolt and second nut, can conveniently maintain the second sealing washer that the replacement is located between clamping ring and the casing, improve maintenance efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a regenerative cycle fan in the background art;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a partial enlarged view of FIG. 1B;

FIG. 4 is a first schematic structural diagram of a prior art overcurrent component;

FIG. 5 is a partial enlarged view of FIG. 4C;

FIG. 6 is a schematic structural diagram of a current foldback component in the prior art;

FIG. 7 is a schematic view of the manifold in cooperation with the impeller;

FIG. 8 is an enlarged view of a portion of FIG. 7D;

FIG. 9 is a cross-sectional view of the seal ring;

FIG. 10 is a front view of the front plate;

FIG. 11 is a cross-sectional view taken at line E-E of FIG. 10;

FIG. 12 is a schematic structural diagram of a regenerative circulating fan for a pyrolysis production line;

fig. 13 is a partial enlarged view of fig. 12F;

FIG. 14 is an enlarged view of a portion of FIG. 12G;

fig. 15 is a partial enlarged view of fig. 12H;

fig. 16 is a partial enlarged view of fig. 12I.

In the figure:

1-machine shell, 1-1-maintenance window, 1-2-maintenance cover plate, 1-2-1-machine shell air inlet, 1-3-machine shell shaft hole, 1-4-machine shell connecting hole, 2-impeller, 2-1-front disk, 2-1-1-front disk air inlet, 2-1-2-jack, 2-2-blade, 2-2-1-auxiliary blade, 2-3-rear disk, 2-3-1-hub, 3-current collector, 3-1-first current collecting pipe, 3-2-second current collecting pipe, 3-2-1-guiding piece mounting round hole, 4-sealing ring, 4-1-guiding long hole, 5-guide, 5-1-guide bolt, 5-2-guide nut, 6-elastic, 7-enclosure, 7-inner hole, 7-2-enclosure bottom, 8-insulation, 8-1-first collector mounting hole, 8-2-insulation shaft hole, 9-guard plate, 9-1-second collector mounting hole, 9-2-guard plate shaft hole, 10-reinforcing rib, 11-fixing plate, 12-sealing cover, 13-packing, 14-gland, 15-sleeve, 16-first bearing ring, 17-second bearing ring, 18-first flange, 18-1-first flange connection hole, 19-second flange, 19-1-second flange connection hole, 20-a first seal ring, 20-1-a first seal ring connecting hole, 21-a second seal ring, 21-1-a second seal ring connecting hole, 22-a pressing ring, 22-1-a pressing ring connecting hole, 23-a first bolt, 24-a first nut, 25-a second bolt, 26-a second nut, and 27-self tapping;

100-base, 200-bearing box, 300-coupler, 400-motor and 500-transmission shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.