CN216518751U

CN216518751U - High-temperature circulating fan device for industrial kiln

Info

Publication number: CN216518751U
Application number: CN202123025484.XU
Authority: CN
Inventors: 王铭; 张弛
Original assignee: Suzhou Tangde Metal Technology Co ltd
Current assignee: Suzhou Tangde Metal Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-13
Anticipated expiration: 2031-12-03

Abstract

A high temperature circulating fan device for industrial kilns comprises: an upper fixed flange plate; the driving motor mechanism is arranged on the upper fixed flange plate and comprises a motor; the protection conical cover is provided with a square flange piece and a conical cover shell, the conical cover is formed below the square flange piece, and high-temperature-resistant cotton is filled in the conical cover shell; the cylinder component is arranged in the center of the square flange piece and the cone housing and comprises an outer cylinder, an inner cylinder, a central pipe, a water inlet pipe and a water outlet pipe; the transmission shaft assembly comprises a transmission shaft body, and the transmission shaft body penetrates through the central pipe and the cone housing bottom plate and then extends out of the cone housing; an impeller assembly comprising an impeller hub member and a plurality of blade members; the guide cover assembly comprises a guide cover outer ring and a guide cover inner ring, a plurality of guide vanes are arranged between the guide cover outer ring and the guide cover inner ring, and a plurality of supporting tubes are arranged on the upper portion of the guide cover outer ring. The firing quality is ensured; the work stability of the inner cylinder assembly, the bearing and the transmission shaft assembly under the high-temperature condition is protected, and the requirement of long-term operation is met.

Description

High-temperature circulating fan device for industrial kiln

Technical Field

The utility model belongs to the technical field of industrial kilns, and particularly relates to a high-temperature circulating fan device for an industrial kiln.

Background

The industrial kiln is a device for calcining materials or calcining products built by refractory materials, is roughly divided into various high, medium and low temperature industrial kilns such as a box type, a well type, a push plate type, a tunnel resistance furnace, a vacuum furnace, a gas protection furnace, an ultrahigh temperature tube type push plate furnace, a roasting furnace, a reduction furnace, a graphitization furnace and the like, can be used for calcining structural ceramics, textile ceramics, a chip capacitor, a ceramic dielectric capacitor, a thick film circuit, a chip resistor, a ceramic substrate, high-alumina ceramics, hard alloy materials, tungsten molybdenum material products and the like, and is a calcining device with wide application and high efficiency in the industrial field. The circulating high-temperature fan is mainly applied to the heat treatment environment of the industrial kiln with high working temperature and is specially used for hot air circulation in the heat treatment process of the industrial kiln, so that hot air balance and exchange and high-temperature air circulation in a hearth in the industrial kiln are realized, and uniform heating of all parts of a product is ensured. Because the internal working temperature of the hearth of the industrial kiln is high, and the transmission shaft and the impeller of the circulating high-temperature fan are usually arranged in the hearth of the industrial kiln, under the environment of high-temperature working of the hearth of the industrial kiln, the reliability of the transmission shaft, the impeller and the bearing seat inside the high-temperature fan is poor due to high temperature under long-time working, and if heat in the hearth is transferred to the bearing and the motor from the impeller and the transmission shaft, the temperature of the bearing and the motor is overhigh, the running stability and the service life of the bearing and the motor are influenced, so that quite high requirements are provided for the whole tightness and the cooling means of the high-temperature circulating fan. However, the high-temperature fan adopted by the existing industrial kiln has the problems of low high-temperature resistance caused by incomplete structural design, incapability of ensuring the stability of the high-temperature circulating fan device under long-time work and short service life of the high-temperature circulating fan, low finished product rate of fired products and poor overall quality or scrapping, is difficult to meet the common work requirement that the temperature is higher than 800 ℃ and the continuous working time is longer than 60 days, and has poor practicability.

In view of the above, there is a need for a reasonable improvement of the structure of the circulating fan for the industrial kiln. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature circulating fan device for an industrial kiln, which has the advantages of long service life, stable and reliable work, high temperature resistance, corrosion resistance and carburization resistance, is beneficial to generating a large amount of stable flowing air and effectively dispersing heat in the kiln through uniform diversion of the air so as to ensure that a fired product can be uniformly heated and the quality of a finished product is improved, is beneficial to protecting a transmission shaft assembly, a bearing and a motor in the interior by arranging a conical protective cover filled with high-temperature-resistant cotton so as to realize the operation stability under the high-temperature condition and prevent the overheating from influencing the work, and is convenient to further reduce the temperature of the transmission shaft body and a lower bearing seat under the long-term high-temperature work by arranging a cylinder assembly capable of effectively cooling the interior by using cooling water so as to ensure the work reliability.

The task of the utility model is achieved by a high-temperature circulating fan device for an industrial kiln, comprising: an upper fixed flange plate installed on the top of the kiln; the driving motor mechanism is fixedly arranged on the upper fixed flange plate and comprises a motor; the protection conical cover is provided with a square flange piece and a conical cover shell, the square flange piece is fixedly arranged below the upper fixed flange plate, the conical cover shell is formed below the square flange piece, and high-temperature-resistant cotton capable of resisting high temperature is filled in the protection conical cover; the cylinder component penetrates through the square flange piece and the central position inside the cone housing from top to bottom, and comprises an outer cylinder, an inner cylinder, a central pipe, a water inlet pipe and a water outlet pipe, wherein the outer cylinder is hollow and forms an inner cavity of the outer cylinder; the transmission shaft assembly comprises a transmission shaft body which extends along the vertical direction and is in transmission connection with the motor in a belt pulley connection mode, and the transmission shaft body penetrates through the central pipe and the cone housing bottom plate from top to bottom and then extends out of the cone housing downwards; an impeller assembly including an impeller hub member fixedly coupled to a lower end portion of the drive shaft body and a plurality of blade members welded to an outer circumferential surface of the impeller hub member at equal intervals around a circumferential direction of the impeller hub member; the guide cover assembly comprises a guide cover outer ring and a guide cover inner ring, a plurality of guide vanes are connected between the guide cover outer ring and the guide cover inner ring, a plurality of supporting tubes extending along the vertical direction are welded on the upper portion of the guide cover outer ring, and the upper end portions of the supporting tubes are fixedly welded with the protection conical cover, so that the guide cover outer ring and the protection conical cover are fixedly connected.

In a specific embodiment of the utility model, a plurality of upper fixing flange plate mounting holes are arranged at intervals on the edge position of the upper fixing flange plate, four channel steels are welded on the upper fixing flange plate, the four channel steels are arranged in a groined structure, and hoisting holes are arranged at the end parts of two ends of the channel steels in the length direction.

In another specific embodiment of the present invention, the driving motor mechanism further comprises a mounting bracket and a motor fixing plate, the mounting bracket comprises a mounting bracket body plate, a pair of mounting bracket connecting plates are formed on the mounting bracket body plate, a plurality of mounting bracket connecting plate kidney-shaped holes are formed on the mounting bracket connecting plates, a motor fixing plate connecting plate is formed on the motor fixing plate and at a position corresponding to the mounting bracket connecting plate, a bolt capable of moving back and forth is arranged in the mounting bracket connecting plate kidney-shaped hole, the bolt is locked with the motor fixing plate connecting plate, thereby realizing the fixed mounting of the mounting bracket and the motor fixing plate, the motor is fixedly mounted at a position of one side of the motor fixing plate far away from the mounting bracket, the motor has a motor output shaft extending downwards, and the lower part of the motor is also provided with a motor protective cover connected to the channel steel of the upper fixing flange plate, the motor protective cover is fixedly connected with the mounting bracket, the motor belt pulley is accommodated in the motor protective cover, a transmission shaft belt pulley is fixedly connected to the top end of the transmission shaft body, a transmission belt is sleeved on the motor belt pulley and penetrates through the mounting bracket main body plate of the mounting bracket and then sleeved on the transmission shaft belt pulley, and therefore the motor belt pulley is connected with the transmission shaft belt pulley in a transmission manner.

In another specific embodiment of the utility model, a plurality of waist-shaped holes of the square flange part, which can ventilate and dissipate heat and eliminate thermal deformation of the body at high temperature, are formed in the square flange part of the protective conical cover, a conical cover reinforcing waist ring in a circular ring structure is fixedly welded to the middle position of the conical cover in the height direction, a plurality of reinforcing waist ring transverse connecting rods are welded to the conical cover reinforcing waist ring at intervals around the circumference direction of the conical cover reinforcing waist ring and at positions corresponding to the plurality of support tubes, and the end parts of the plurality of reinforcing waist ring transverse connecting rods, which are far away from the conical cover reinforcing waist ring, are welded and fixed to the corresponding support tubes.

In a further specific embodiment of the present invention, an upper fixing flange plate through hole is formed at a central position of the upper fixing flange plate, the inner cylinder of the cylinder assembly is inserted into the upper fixing flange plate through hole, and an upper cylinder of the inner cylinder protrudes to a position above the upper fixing flange plate through hole; an inner cylinder flange plate is further arranged at the top end of the inner cylinder, a plurality of inner cylinder flange plate reinforcing rib plates are further welded between the upper fixing flange plate and the inner cylinder flange plate, the plurality of inner cylinder flange plate reinforcing rib plates are uniformly distributed around the circumferential direction of the inner cylinder, and the plurality of inner cylinder flange plate reinforcing rib plates are welded to the outer cylinder of the inner cylinder to realize the fixed connection of the inner cylinder flange plate and the inner cylinder body; an upper bearing seat is further sleeved at the position of the near end part of the top end of the transmission shaft body and at the position corresponding to the lower position of the transmission shaft belt pulley, an upper bearing seat mounting flange plate is fixedly mounted below the upper bearing seat, the upper bearing seat mounting flange plate is fixedly connected to the inner cylinder flange plate in a screw connection mode, a central hole of the upper bearing seat mounting flange plate, through which the transmission shaft body can pass, is further formed at the central position of the upper bearing seat mounting flange plate, a plurality of upper bearing seat mounting flange plate ventilation holes are further formed in the upper bearing seat mounting flange plate, the plurality of upper bearing seat mounting flange plate ventilation holes are communicated with the inner cavity of the inner cylinder, an upper bearing seat mounting flange plate ventilation hole cover plate is mounted on each of the plurality of upper bearing seat mounting flange plate ventilation holes, and a transmission shaft belt pulley protective cover plate is further mounted on the upper bearing seat protective cover plate, the transmission shaft belt pulley and the upper bearing seat are both accommodated in the transmission shaft belt pulley protective cover, and the transmission shaft belt pulley protective cover can effectively protect the transmission shaft belt pulley; a lower bearing seat is sleeved at the position close to the middle part of the transmission shaft body in the height direction and at the position corresponding to the upper part of the bottom plate of the inner cylinder body, a lower bearing seat mounting flange plate is welded and fixed on the surface of the upper side of the bottom plate of the inner cylinder body, the lower bearing seat and the lower bearing seat mounting flange plate are fixedly connected in a screw connection mode, the central position of the lower bearing seat mounting flange plate is also provided with a lower bearing seat mounting flange plate central hole for the transmission shaft body to pass through, a circle of asbestos rope embedded annular groove is formed at the upper part of the central hole of the mounting flange plate of the lower bearing seat, an asbestos rope is embedded in the asbestos rope embedded annular groove, the asbestos rope is arranged between the lower bearing seat mounting flange plate and the transmission shaft body, and an asbestos rope pressing ring capable of effectively pressing the asbestos rope is further mounted on the lower bearing seat mounting flange plate in a screw connection mode; and a transmission shaft heat dissipation blade piece capable of forming air blowing is fixedly arranged on the body of the transmission shaft body and at a position corresponding to the upper part of the lower bearing seat in a screw connection mode.

In still another specific embodiment of the present invention, the radial diameter of the inner cylinder bottom plate is larger than the radial diameter of the inner cylinder body, the shape of the inner cylinder bottom plate is adapted to the inner cavity of the outer cylinder, and the outer circumference side edge of the inner cylinder bottom plate is welded and fixed to the inner side wall of the outer cylinder and divides the inner cavity of the outer cylinder into two parts, an outer cylinder bottom plate having a pan bottom plate structure is welded and fixed to the bottom of the outer cylinder, and a water tank plate is welded to the outer cylinder at a position close to the bottom thereof and corresponding to the position between the outer cylinder bottom plate and the inner cylinder bottom plate, the shape of the water tank plate is adapted to the shape of the inner cavity of the outer cylinder, and the outer circumference side of the water tank plate is also welded and fixed to the inner side wall of the outer cylinder, the upper part of the inner cylinder bottom plate inside the inner cavity of the outer cylinder and corresponding to the cavity between the outer cylinder and the inner cylinder is configured as a water passing cavity, a cylinder partition plate which is welded and fixed with the outer cylinder and the inner cylinder together and is in a circular plate structure is arranged at the middle position in the height direction in the water passing cavity, a plurality of cylinder partition plate water passing holes penetrating through the cylinder partition plate in the thickness direction are arranged on the cylinder partition plate, a water inlet cavity is formed in the inner cavity of the outer cylinder and corresponds to the part between the inner cylinder bottom plate and the water tank plate, a water tank cavity is formed in the lower part in the inner cavity of the outer cylinder and corresponds to the cavity between the water tank plate and the outer cylinder bottom plate, a plurality of water passing pipes are welded and fixed in the water inlet cavity and between the inner cylinder bottom plate and the water tank plate, the plurality of water passing pipes are distributed at intervals around the side edge of the periphery of the inner cylinder bottom plate and are arranged at the position corresponding to the water passing cavity, and the plurality of water passing pipes are communicated with the water passing cavity and the water tank cavity, thereby realizing the conduction of the water passing cavity and the water tank cavity; the central pipe penetrates through the central positions of the inner cylinder bottom plate, the water tank plate and the outer cylinder bottom plate from top to bottom along the vertical direction and outwards stretches out of the outer cylinder bottom plate, the central pipe and the inner cylinder bottom plate are welded and fixed together, a central hole of the water tank plate for the central pipe to penetrate through is formed in the central position of the water tank plate, a plurality of water outlet annular grooves are formed in the position, corresponding to the outer peripheral side of the central hole of the water tank plate, of the water tank plate at intervals, a water retaining ring is further welded and fixed in the central position of the surface of the lower side of the water tank plate, and the plurality of water outlet annular grooves are formed in the position, corresponding to the upper part of the inside of the water retaining ring, of the water tank plate; the water inlet pipe is arranged outside the outer cylinder body and extends along the vertical direction, the upper part of the water inlet pipe is welded and fixed with the upper fixed flange plate, the input end of the upper end part of the water inlet pipe extends out of the upper fixed flange plate, the output end of the lower end part of the water inlet pipe is welded and fixed at the position, corresponding to the water inlet cavity, on the outer cylinder body, and the output end of the lower end part of the water inlet pipe is communicated with the water inlet cavity; the water outlet pipe is also arranged outside the outer cylinder body and extends along the vertical direction, the input end of the lower end part of the water outlet pipe is welded and fixed at the position, corresponding to the upper part of the cylinder body partition plate, on the outer cylinder body, the input end of the water outlet pipe is communicated with the water passing cavity, the upper part of the water outlet pipe is welded and fixed with the upper fixing flange plate, and the output of the upper end part of the water outlet pipe extends out of the upper fixing flange plate.

In a further specific embodiment of the present invention, a plurality of outer cylinder reinforcing rib plates are further welded to the upper portion of the outer side surface of the outer cylinder and around the circumferential direction thereof, and the plurality of outer cylinder reinforcing rib plates are welded and fixed to the upper fixed flange plate and the outer cylinder body; the inner cylinder body is provided with a plurality of inner cylinder heat dissipation through holes capable of playing a role in heat dissipation and exhaust, the bottom of an inner cavity of the inner cylinder body is provided with a plurality of inner cylinder internal reinforcing rib plates on a bottom plate of the inner cylinder body, the inner cylinder internal reinforcing rib plates are arranged at the peripheral side edge position of the bottom plate of the inner cylinder body and distributed at intervals in the circumferential direction of the bottom plate of the inner cylinder body, and the inner cylinder internal reinforcing rib plates are welded and fixed with the inner cylinder body and the inner cylinder bottom plate.

In a more specific embodiment of the present invention, the impeller hub member of the impeller assembly includes an impeller core, a top sealing plate assembly, a bottom sealing plate assembly and an outer hub ring plate, and the top sealing plate assembly and the bottom sealing plate assembly are welded and fixed between the impeller core and the outer hub ring plate in a vertically spaced state; the impeller shaft core is formed at the central position of the impeller hub ring piece, an impeller shaft core inner hole penetrating through the impeller shaft core in the height direction is arranged in the impeller shaft core, the impeller shaft core inner hole is of a conical hole structure with a large upper part and a small lower part, the lower end part of the transmission shaft body is formed into a transmission shaft matching part, the shape of the transmission shaft matching part is matched with the inner hole of the impeller shaft core and is also of a conical body structure with a large upper part and a small lower part, the transmission shaft matching part and the impeller shaft core are matched and installed together, the transmission shaft matching part and the impeller shaft core are fixedly installed in a key connection mode, a lower locking block of the transmission shaft matching part is formed at the lower part of the transmission shaft matching part, the lower locking block of the transmission shaft matching part is of a conical body structure with a small upper part and a large lower part, and an impeller shaft core clamping ring is arranged at the lower part of the impeller shaft core, the impeller shaft core clamping ring consists of two circular ring members with semicircular ring structures, an impeller shaft core clamping ring inner hole is formed in the impeller shaft core clamping ring, the shape of the impeller shaft core clamping ring inner hole is matched with that of a locking block below a transmission shaft matching part, the impeller shaft core clamping ring and the transmission shaft matching part are installed together in a matching mode, a connecting screw capable of locking the impeller shaft core clamping ring is further arranged on the impeller shaft core clamping ring, the transmission shaft body and the impeller shaft core can be tightly connected through locking of the connecting screw, a plurality of impeller shaft core inner holes are further arranged on the inner circumferential side wall of the impeller shaft core inner hole to avoid vacant positions, and a top sealing plate matching groove and a bottom sealing plate matching groove are formed in the outer edge positions of the upper end part and the lower end part of the impeller shaft core in the height direction respectively; the top sealing plate assembly comprises a top main body sealing plate, a top additional sealing plate, a top inner welding ring and a top outer welding ring, wherein the top main body sealing plate and the top additional sealing plate are of circular plate structure, the position of the top main body sealing plate close to the inner peripheral edge of an impeller shaft core is welded and fixed on a top sealing plate matching groove of the impeller shaft core through the top inner welding ring, the position of the top main body sealing plate close to the outer peripheral edge of the outer hub ring plate is welded and fixed on the outer hub ring plate through the top outer welding ring, the top additional sealing plate is welded and fixed on the upper side surface of the top main body sealing plate, and a plurality of exhaust holes which are uniformly distributed and can exhaust outwards are arranged on the top inner welding ring and the top outer welding ring; the bottom sealing plate assembly also comprises a bottom main body sealing plate, a bottom additional sealing plate, a bottom inner welding ring and a bottom outer welding ring, the bottom main body sealing plate and the bottom additional sealing plate are of arc plate structure structures which are inclined outwards from top to bottom, the inner peripheral edge part of the bottom main body sealing plate close to the impeller shaft core is welded and fixed on the bottom sealing plate matching groove of the impeller shaft core through the bottom inner welding ring, the outer peripheral edge part of the bottom main body sealing plate close to the hub ring plate is welded and fixed on the outer wheel hub ring plate through the bottom outer welding ring, the bottom additional sealing plate is welded and fixed on the surface of the bottom main body sealing plate facing to the lower side, a plurality of exhaust holes which are uniformly distributed and can exhaust outwards are also formed in the bottom inner welding ring and the bottom outer welding ring, and a plurality of bottom main body exhaust holes which penetrate through the thickness direction of the bottom main body sealing plate and are uniformly distributed are formed in the bottom main body sealing plate, and a plurality of waist-shaped grooves which penetrate through the thickness direction of the bottom additional sealing plate and are uniformly distributed are formed on the bottom additional sealing plate.

In yet another specific embodiment of the present invention, a plurality of blade pieces of the impeller assembly are welded and fixed to an outer peripheral side surface of the outer hub plate at equal intervals around a circumferential direction of the outer hub plate, and the blade pieces are formed by stacking and welding four circular arc plate pieces to each other, two middle circular arc plate pieces having a longer length are formed as long-type blade plates, two upper and lower circular arc plate pieces having a shorter length are formed as short-type blade plates, and one long-type blade plate air discharge hole is opened at a corresponding position of the two long-type blade plates.

In yet another specific implementation of the present invention, the height of the inner pod ring of the pod assembly is less than the height of the entire outer pod ring, and the outer pod ring includes two upper and lower pod outer ring single pieces fixedly mounted together by means of screws, the vertical cross sections of the two pod outer ring single pieces are both in an Contraband-shaped structure, and the inner pod ring is positioned and connected to the pod outer ring single piece located at the lower portion by a plurality of guide vanes, and the impeller assembly is disposed at an inner position of the pod outer ring single piece located at the upper portion and corresponding to an upper position of the pod inner ring; and this kuppe outer lane monomer spare has an outer lane monomer spare main part board that is pipe plate structure and constitutes outer lane monomer spare upper junction plate and outer lane monomer spare lower junction plate at both ends about this outer lane monomer spare main part board, many the lower extreme tip interval welding of stay tube is on the outer lane monomer spare upper junction plate of the outer lane monomer spare that is located upper portion, and is located outer lane monomer spare lower junction plate of the outer lane monomer spare on upper portion and the outer lane monomer spare upper junction plate of the outer lane monomer spare that is located the lower part and passes through the mode realization rigid coupling of screw connection the interval welding has a plurality of outer lane monomer spare deep floor between outer lane monomer spare upper junction plate and the outer lane monomer spare lower junction plate, and a plurality of outer lane monomer spare deep floor all centers on the circumferencial direction of outer lane monomer spare main part board evenly sets up.

The technical scheme provided by the utility model has the technical effects that: firstly, the driving motor mechanism is arranged on the upper fixed flange plate, and the rotation of the impeller assembly is realized through the transmission of the transmission shaft assembly, so that stably flowing air can be generated downwards, the air can be divided by the guide vanes in the guide cover assembly to realize uniform guide of the air, the heat in the kiln can be effectively dispersed to ensure the uniform heating of a fired product, the air volume is large, the air volume distribution is uniform, the firing quality can be effectively ensured, and the kiln is high in service life, resistant to high temperature, resistant to corrosion (sulfide, chloride and the like), resistant to carburization (carbon ion infiltration) and the like, and is suitable for kiln equipment of different types; secondly, the conical protection cover is fixedly arranged below the upper fixing flange plate, and high-temperature-resistant cotton is filled in the conical protection cover, so that the working stability of the inner cylinder assembly and the transmission shaft assembly under a high-temperature condition can be effectively protected; finally, can use the barrel subassembly that the cooling water effectively cooled down inside through the setting to play the effect that reduces the temperature of step down mounting flange board and interior barrel, further guarantee transmission shaft body and step down job stabilization nature under the high temperature condition, can satisfy long-term operation's actual demand and improve life.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a general schematic view of the structure of the embodiment shown in fig. 1.

Fig. 4 is a structural sectional view of the embodiment shown in fig. 1.

FIG. 5 is a cross-sectional view of the cartridge assembly of the embodiment of FIG. 1.

Fig. 6 is a schematic structural diagram of an impeller assembly in the embodiment shown in fig. 1.

Fig. 7 is an exploded view of the impeller assembly of fig. 6 at another angle.

In the figure: 1. the device comprises an upper fixed flange plate, 11. an upper fixed flange plate mounting hole, 12. channel steel, 121. a hoisting hole and 13. an upper fixed flange plate through hole;

2. the motor protection device comprises a driving motor mechanism, 21 motors, 211 motor output shafts, 212 motor belt pulleys, 213 motor protection covers, 22 mounting brackets, 221 mounting bracket main body plates, 222 mounting bracket connecting plates, 2221 mounting bracket connecting plate waist-shaped holes, 23 motor fixing plates and 231 motor fixing plate connecting plates;

3. the protection cone cover comprises a protection cone cover, 31 square flange pieces, 311 square flange piece kidney-shaped holes, 32 cone cover shells, 321 cone cover shell reinforced waist rings, 322 reinforced waist ring transverse connecting rods and 33 high-temperature-resistant cotton;

4. the water tank comprises a cylinder component, 41, an outer cylinder, 411, an inner cavity of the outer cylinder, 4111, a water passing cavity, 4112, a water inlet cavity, 4113, a water tank cavity, 412, a bottom plate of the outer cylinder, 413, a water tank plate, 4131, a central hole of the water tank plate, 4132, a water outlet annular groove, 4133, a water retaining ring, 414, a water passing pipe, 415, a reinforcing rib plate of the outer cylinder, 42, an inner cylinder, 421, a bottom plate of the inner cylinder, 422, a flange plate of the inner cylinder, 423, a reinforcing rib plate of a flange plate of the inner cylinder, 424, a heat dissipation through hole of the inner cylinder, 425, an inner reinforcing rib plate of the inner cylinder, 43, a central pipe, 44, a water inlet pipe, 45, a water outlet pipe, 46, a partition plate of the cylinder, 461 and a water passing hole of the partition plate of the cylinder;

5. the transmission shaft assembly comprises a transmission shaft assembly 51, a transmission shaft body 511, a transmission shaft matching part 512, a lower locking block of the transmission shaft matching part 52, a transmission shaft belt pulley 53, an upper bearing seat 531, an upper bearing seat mounting flange plate 5311, an upper bearing seat mounting flange plate central hole 5312, an upper bearing seat mounting flange plate vent hole 5313, an upper bearing seat mounting flange plate vent hole cover plate 54, a transmission shaft belt pulley protective cover 55, a lower bearing seat 551, a lower bearing seat mounting flange plate 5511, a lower bearing seat mounting flange plate central hole 5512, an asbestos rope embedded annular groove 56, an asbestos rope 561, an asbestos rope pressure ring 57 and a transmission shaft heat dissipation blade piece;

6. the impeller assembly comprises an impeller assembly, 61, an impeller hub ring piece, 611, an impeller shaft core, 6111, an impeller shaft core inner hole, 6112, an impeller shaft core clamping ring, 61121, an impeller shaft core clamping ring inner hole, 6113, an impeller shaft core inner hole vacancy-avoiding position, 6114, a top sealing plate matching groove, 6115, a bottom sealing plate matching groove, 612, a top sealing plate assembly, 6121, a top main body sealing plate, 6122, a top additional sealing plate, 6123, a top inner welding ring, 6124, a top outer welding ring, 613, a bottom sealing plate assembly, 6131, a bottom main body sealing plate, 61311, a bottom main body sealing plate exhaust hole, 6132, a bottom additional sealing plate, 61321, a bottom additional sealing plate waist-shaped groove, 6133, a bottom inner welding ring, 6134, a bottom outer welding ring, 614, an outer hub ring plate, 62, 621, a long blade plate, 6211, a blade plate exhaust hole, 622 and a short blade plate; 7. the structure comprises a guide cover assembly, 71 guide cover outer rings, 711 guide cover outer ring single pieces, 7111 outer ring single piece main body plates, 7112 outer ring single piece upper connecting plates, 7113 outer ring single piece lower connecting plates, 7114 outer ring single piece reinforcing rib plates, 72 guide cover inner rings, 73 guide vanes, 74 support tubes.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and back are taken as examples of the position state of fig. 1, and thus, the present invention should not be construed as being particularly limited to the technical solutions provided by the present invention.

Referring to fig. 1 to 4, a high temperature circulating fan device for an industrial kiln is shown, which comprises an upper fixed flange plate 1 mounted on the top of the kiln, wherein the upper fixed flange plate 1 is in a rectangular plate-shaped mechanism structure; a driving motor mechanism 2 fixedly mounted on the upper fixing flange plate 1, and the driving motor mechanism 2 comprises a motor 21 capable of providing power; the protection conical cover 3 is of an integral structure and is provided with a square flange piece 31 and a conical cover 32, the square flange piece 31 is fixedly arranged below the upper fixed flange plate 1, the conical cover 32 is formed below the square flange piece 31, high-temperature-resistant cotton 33 capable of resisting high temperature is filled in the protection conical cover, and the high-temperature-resistant cotton 33 preferably adopts aluminum silicate heat-insulating cotton; a cylinder assembly 4, which is inserted through the central position inside the square flange 31 and the cone housing 32 from top to bottom, and the cylinder assembly 4 includes an outer cylinder 41, an inner cylinder 42, a central tube 43, a water inlet tube 44 and a water outlet tube 45, the outer cylinder 41 is hollow and forms an outer cylinder inner cavity 411, the inner cylinder 42 is arranged in the outer cylinder inner cavity 411, an inner cylinder bottom plate 421 is welded and fixed at the bottom of the inner cylinder 42, and the water inlet tube 44 and the water outlet tube 45 can perform the flow guiding operation of inputting and outputting cooling water inside the outer cylinder 41 and the inner cylinder 42, so as to cool the inside of the outer cylinder 41 and the inner cylinder 42; a transmission shaft assembly 5, including a transmission shaft body 51 extending along the vertical direction and realizing transmission connection with the motor 21 through a belt pulley connection mode, wherein the transmission shaft body 51 passes through the bottom plate 421 of the inner cylinder of the cylinder assembly 4, the bottom plate of the outer cylinder 41 and the bottom plate of the cone housing 32 from top to bottom and then extends out of the cone housing 32; an impeller assembly 6 including an impeller hub 61 and a plurality of blade members 62, the impeller hub 61 being fixedly attached to the lower end portion of the drive shaft body 51, the plurality of blade members 62 being welded to the outer peripheral side surface of the impeller hub 61 at equal intervals around the circumferential direction of the impeller hub 61; the guide flow cover assembly 7 comprises a guide flow cover outer ring 71 and a guide flow cover inner ring 72, a plurality of guide flow blades 73 are connected between the guide flow cover outer ring 71 and the guide flow cover inner ring 72, a plurality of support pipes 74 extending along the vertical direction are welded at the upper part of the guide flow cover outer ring 71, and the upper end parts of the plurality of support pipes 74 are welded and fixed with the protective conical cover 3, so that the guide flow cover outer ring 71 is fixedly connected with the protective conical cover 3; the transmission shaft body 51 is driven by the motor 21 to rotate and further drive the impeller hub ring part 61 to rotate, so that the plurality of blade parts 62 rotate and generate flowing air downwards, the flowing air is guided and uniformly divided by the guide vanes 73 of the guide cover assembly 7, the uniformly flowing air is formed in the hearth of the kiln and flows and mixes in the hearth at a high speed, the temperature in the hearth is uniform, all parts of a product in the hearth are fired in a uniform high-temperature environment, and the product with high quality and high qualified rate is produced.

In this embodiment, a plurality of upper fixing flange plate mounting holes 11 are formed at intervals at the edge of the upper fixing flange plate 1, four channel steels 12 are welded to the upper fixing flange plate 1, the four channel steels 12 are arranged in a groined structure, and a hoisting hole 121 is formed in the end portions of the two ends of the channel steels 12 in the length direction. The intensity of fixed flange board 1 can effectively be strengthened in the setting of channel-section steel 12.

With continuing reference to fig. 1 to 4, the driving motor mechanism 2 further includes a mounting bracket 22 and a motor fixing plate 23, the mounting bracket 22 includes a mounting bracket main body plate 221, a pair of mounting bracket connecting plates 222 is formed on the mounting bracket main body plate 221, a plurality of mounting bracket connecting plate kidney-shaped holes 2221 are formed on the mounting bracket connecting plates 222, a motor fixing plate connecting plate 231 is formed on the motor fixing plate 23 at a position corresponding to the mounting bracket connecting plates 222, a bolt capable of moving back and forth is disposed in the mounting bracket connecting plate kidney-shaped hole 2221, the bolt is locked with the motor fixing plate connecting plate 231 to realize the fixed mounting of the mounting bracket 22 and the motor fixing plate 23, the motor 21 is fixedly mounted on a side position of the motor fixing plate 23 away from the mounting bracket 22, the motor 21 has a motor output shaft 211 extending downward, a motor pulley 212 is fixedly connected to the lower end of the motor output shaft 211, a motor protective cover 213 connected to the channel steel 12 of the upper fixed flange plate 1 is further disposed at the lower portion of the motor 21, the motor protective cover 213 is further fixedly connected to the mounting bracket 22, the motor pulley 212 is accommodated in the motor protective cover 213, a transmission shaft pulley 511 is further fixedly connected to the top end of the transmission shaft body 51, a transmission belt 214 is sleeved on the motor pulley 212, and the transmission belt 214 passes through the mounting bracket main body plate 221 of the mounting bracket 22 and then is sleeved on the transmission shaft pulley 511, so that the transmission connection between the motor pulley 212 and the transmission shaft pulley 511 is realized; the front and back positions of the motor pulley 212 are adjusted by adjusting the front and back assembling positions of the bolts on the waist-shaped holes 2221 of the connecting plate of the mounting bracket shown in fig. 3, and the tension of the transmission belt 214 is further adjusted, so that the reliability of the rotation of the transmission shaft body 51 is ensured.

Furthermore, a plurality of square flange waist holes 311 capable of ventilating and dissipating heat and eliminating thermal deformation of the body at high temperature are formed in the square flange 31 of the protective conical cover 3, a conical cover shell reinforcing waist ring 321 in a circular ring structure is fixedly welded to the middle position of the conical cover shell 32 in the height direction, a plurality of reinforcing waist ring transverse connecting rods 322 are welded to the conical cover shell reinforcing waist ring 321 at intervals around the circumference direction and corresponding to the plurality of support tubes 74, and the end parts of the plurality of reinforcing waist ring transverse connecting rods 322 far away from the conical cover shell reinforcing waist ring 321 are welded and fixed to the corresponding support tubes 74.

In this embodiment, an upper fixing flange plate through hole 13 is formed in a central position of the upper fixing flange plate 1, the inner cylinder 42 of the cylinder assembly 4 is inserted into the upper fixing flange plate through hole 13, and an upper cylinder of the inner cylinder 42 extends out of a position above the upper fixing flange plate through hole 13, an inner cylinder flange plate 422 is further disposed at a top end of the inner cylinder 42, and a plurality of inner cylinder flange plate reinforcing rib plates 423 are further welded between the upper fixing flange plate 1 and the inner cylinder flange plate 422, the plurality of inner cylinder flange plate reinforcing rib plates 423 are uniformly distributed around a circumferential direction of the inner cylinder 42, and the plurality of inner cylinder flange plate reinforcing rib plates 423 are all welded to an outer cylinder of the inner cylinder 42 and fixedly connect the inner cylinder flange plate 422 and an inner cylinder 42 body.

Further, an upper bearing seat 53 is further sleeved at a position of a proximal end portion of the top end of the transmission shaft body 51 and at a position corresponding to a lower portion of the transmission shaft belt pulley 52, an upper bearing seat mounting flange plate 531 is fixedly mounted below the upper bearing seat 53, the upper bearing seat mounting flange plate 531 is fixedly connected to the inner cylinder flange plate 422 in a screw connection manner, a central hole 5311 of the upper bearing seat mounting flange plate through which the transmission shaft body 51 can pass is further formed at a central position of the upper bearing seat mounting flange plate 531, a plurality of upper bearing seat mounting flange plate ventilation holes 5312 are further formed on the upper bearing seat mounting flange plate 531, the plurality of upper bearing seat mounting flange plate ventilation holes 5312 are communicated with an inner cavity of the inner cylinder 42, and an upper bearing seat mounting flange plate ventilation hole cover plate 5313 is mounted on each of the plurality of upper bearing seat mounting flange plate ventilation holes 5312, a transmission shaft pulley protective cover 54 is further mounted on the upper bearing seat mounting flange plate 531, the transmission shaft pulley 52 and the upper bearing seat 53 are both accommodated in the transmission shaft pulley protective cover 54, and the transmission shaft pulley protective cover 54 can effectively protect the transmission shaft pulley 52; a lower bearing seat 55 is sleeved at a position close to the middle of the height direction of the transmission shaft body 51 and corresponding to the upper part of the inner cylinder bottom plate 421, a lower bearing seat mounting flange plate 551 is welded and fixed on the surface of the inner cylinder bottom plate 421 facing the upper side, the lower bearing seat 55 is fixedly connected with the lower bearing seat mounting flange plate 551 in a screw connection mode, a lower bearing seat mounting flange plate center hole 5511 through which the transmission shaft body 51 can pass is also formed at the center of the lower bearing seat mounting flange plate 551, a circle of asbestos rope embedding annular groove 5512 is formed at the upper part of the lower bearing seat mounting flange plate center hole 5511, an asbestos rope 56 is embedded in the asbestos rope embedding annular groove 5512, the asbestos rope 56 is arranged between the lower bearing seat mounting flange plate 551 and the transmission shaft body 51, and an asbestos rope pressing ring capable of effectively pressing the asbestos rope 56 is also arranged on the lower bearing seat mounting flange plate 551 in a screw connection mode 561; a transmission shaft heat dissipation blade part 57 capable of forming air blowing is fixedly arranged on the body of the transmission shaft body 51 and corresponds to the upper position of the lower bearing seat 55 through a screw connection mode; when the transmission shaft body 51 rotates, the transmission shaft heat dissipation blade piece 57 can rotate to form stable flowing wind, so that the transmission shaft body 51, the upper bearing seat 53 and the lower bearing seat 55 are effectively cooled; the transmission shaft body 51 is preferably made of high temperature resistant chrome nickel stainless steel.

Referring to fig. 5 in combination with fig. 1 and 4, the radial diameter of the inner cylinder bottom plate 421 is larger than the radial diameter of the body of the inner cylinder 42, the shape of the inner cylinder bottom plate 421 is adapted to the inner cavity of the outer cylinder 41, the outer periphery of the inner cylinder bottom plate 421 is welded and fixed to the inner wall of the outer cylinder 41 to divide the inner cavity 411 of the outer cylinder 41 into two parts, the bottom of the outer cylinder 41 is welded and fixed with an outer cylinder bottom plate 412 having a pan-bottom-shaped plate structure, a water tank plate 413 is welded and fixed to the position of the outer cylinder 41 close to the bottom of the outer cylinder and corresponding to the position between the outer cylinder bottom plate 412 and the inner cylinder bottom plate 421, the shape of the water tank plate 413 is adapted to the shape of the inner cavity 411, the outer periphery of the water tank plate 413 is also welded and fixed to the inner wall of the outer cylinder 41, the upper part of the inner cavity 411 of the inner cylinder bottom plate 421 is corresponding to the outer cylinder 41 and the inner cavity 411 and the outer cylinder 41 and the inner cavity 411 A cavity between the inner cylinders 42 is formed as a water passing cavity 4111, a cylinder partition 46 welded to the outer cylinder 41 and the inner cylinder 42 and having a circular plate structure is further disposed at a middle position in a height direction inside the water passing cavity 4111, a plurality of cylinder partition water passing holes 461 penetrating a thickness direction of the cylinder partition are formed in the cylinder partition 46, a water inlet cavity 4112 is formed in a portion inside the outer cylinder inner cavity 411 and corresponding to a position between the inner cylinder bottom plate 421 and the water tank plate 413, a water tank cavity 4113 is formed in a portion inside the outer cylinder inner cavity 411 and corresponding to a cavity between the water tank plate 413 and the outer cylinder bottom plate 412, a plurality of water passing pipes 414 are further welded and fixed inside the water inlet cavity 4112 and between the inner cylinder bottom plate 421 and the water tank plate 413, the plurality of water passing pipes 414 are distributed at intervals around an edge side of the inner cylinder bottom plate 421, and the plurality of water passing pipes 414 are disposed at positions corresponding to the water passing cavity 4111 The water passing pipes 414 are communicated with the water passing cavity 4111 and the water tank cavity 4113, so that the water passing cavity 4111 and the water tank cavity 4113 are communicated; the central tube 43 passes through the central positions of the inner cylinder bottom plate 421, the water tank plate 413 and the outer cylinder bottom plate 412 from top to bottom along the vertical direction and protrudes out of the outer cylinder bottom plate 412, and the central tube 43 and the three are welded and fixed together, a central position of the water tank plate 413 is provided with a central hole 4131 of the water tank plate through which the central tube 43 can pass, a plurality of water outlet annular grooves 4132 are formed on the water tank plate 413 at intervals and correspond to the outer peripheral side position of the central hole 4131 of the water tank plate, a water retaining ring 4133 is further welded and fixed at the central position of the lower side surface of the water tank plate 413, and the plurality of water outlet annular grooves 4132 are arranged on the water tank plate 413 at the upper position corresponding to the inside of the water retaining ring 4133; the water inlet pipe 44 is disposed outside the outer cylinder 41 and extends in the vertical direction, the upper portion of the water inlet pipe 44 is welded and fixed with the upper fixed flange plate 1, and the input end of the upper end of the water inlet pipe extends out of the upper fixed flange plate 1, the output end of the lower end of the water inlet pipe 44 is welded and fixed on the outer cylinder 41 at a position corresponding to the water inlet cavity 4112, and the output end of the lower end of the water inlet pipe 44 is communicated with the water inlet cavity 4112; the water outlet pipe 45 is also disposed outside the outer cylinder 41 and extends in the vertical direction, the input end of the lower end of the water outlet pipe 45 is welded and fixed to the upper position of the outer cylinder 41 corresponding to the cylinder partition 46, the input end of the water outlet pipe 45 is communicated with the water passing cavity 4111, the upper portion of the water outlet pipe 45 is welded and fixed to the upper fixing flange plate 1, and the output end of the upper end of the water outlet pipe extends out of the upper fixing flange plate 1.

In this embodiment, the barrel assembly 4 can implement the cooling operation for the inner barrel 41 and the inner barrel 42 through the circulation of the cooling water, specifically, the cooling circulating water can enter the water inlet pipe 44 through the input end of the water inlet pipe 44 and flow into the water inlet cavity 4112 between the inner barrel bottom plate 421 and the water tank plate 413 through the output end of the water inlet pipe 44, the cooling water flows into the water tank cavity 4113 at the lower part of the water tank plate 413 through the plurality of water outlet ring grooves 413 on the water tank plate 413 in the water inlet cavity 4112, and then flows into the water passing cavity 4111 at the upper part from the water tank cavity 4113 through the plurality of water passing pipes 414 under the action of the external force, and then flows out upwards through the barrel partition water passing holes 461 on the partition plate 46 and flows out outwards through the water outlet pipe 45, the cooling water can effectively and fully exchange heat with the inner barrel bottom plate 421, the inner barrel 42 body and the central pipe 43 in the water inlet cavity 4112 and the water passing cavity 4111, thereby play the effect that reduces the lower bearing frame installation flange board 551 and interior barrel 42 temperature to carry out effectual cooling to lower bearing frame 55 and transmission shaft body 51, play the effect that improves transmission shaft body 51 and lower bearing frame 55 life.

Further, a plurality of outer cylinder reinforcing rib plates 415 are welded on the upper part of the outer side surface of the outer cylinder 41 and around the circumferential direction of the outer cylinder, and the plurality of outer cylinder reinforcing rib plates 415 are welded and fixed with the upper fixed flange plate 1 and the body of the outer cylinder 41; the upper part of the inner cylinder 42 body is provided with a plurality of inner cylinder heat dissipation through holes 424 which can play a role in heat dissipation and exhaust, the bottom of the inner cavity of the inner cylinder 42 is provided with a plurality of inner cylinder inner reinforcing rib plates 425 on the inner cylinder bottom plate 421, the plurality of inner cylinder inner reinforcing rib plates 425 are arranged at the peripheral side edge position of the inner cylinder bottom plate 421 and distributed at intervals along the circumferential direction of the inner cylinder bottom plate 421, and the plurality of inner cylinder inner reinforcing rib plates 425 are welded and fixed with the body of the inner cylinder 42 and the inner cylinder bottom plate 421.

Referring to fig. 6 and 7 in combination with fig. 1 and 4, the impeller hub 61 of the impeller assembly 6 includes an impeller core 611, a top sealing plate assembly 612, a bottom sealing plate assembly 613 and an outer hub ring plate 614, and the top sealing plate assembly 612 and the bottom sealing plate assembly 613 are welded and fixed between the impeller core 611 and the outer hub ring plate 614 in a vertically spaced state; the impeller core 611 is formed at the center of the impeller hub 61, an impeller core inner hole 6111 penetrating the impeller core 611 is formed in the impeller core 611, the impeller core inner hole 6111 has a tapered hole structure with a large top and a small bottom, the lower end of the transmission shaft body 51 is formed as a transmission shaft matching part 511, the shape of the transmission shaft matching part 511 is matched with the impeller core inner hole 6111 and is also in a tapered body structure with a large top and a small bottom, the transmission shaft matching part 511 and the impeller core inner hole 6111 are matched and mounted together, the transmission shaft matching part 511 and the impeller core 611 are mounted in a key connection mode, a transmission shaft matching part lower locking block 512 is formed at the lower part of the transmission shaft matching part 511, the transmission shaft matching part lower locking block 512 has a tapered body structure with a small top and a large bottom, and an impeller core clamping ring 6112 is arranged at the lower part of the impeller core 611, the impeller shaft core clamping ring 6112 is composed of two circular ring members with semicircular ring structures, an impeller shaft core clamping ring inner hole 61121 is formed in the impeller shaft core clamping ring 6112, the shape of the impeller shaft core clamping ring inner hole 61121 is matched with the shape of the lower locking block 512 of the transmission shaft matching part, the impeller shaft core clamping ring 6112 and the lower locking block 512 are installed in a matching mode, a connecting screw capable of locking the impeller shaft core clamping ring 6112 is further arranged on the impeller shaft core clamping ring 6112, the transmission shaft body 51 and the impeller shaft core 611 can be tightly connected through locking of the connecting screw, a plurality of impeller shaft core inner hole vacancy avoiding positions 6113 are further arranged on the inner peripheral side wall of the impeller shaft core inner hole 6111, and a top sealing plate matching groove 6114 and a bottom sealing plate matching groove 6115 are formed in the outer edge positions of the upper end part and the lower end part of the impeller shaft core 611 in the height direction respectively; the top sealing plate assembly 612 includes a top main body sealing plate 6121, a top additional sealing plate 6122, a top inner welding ring 6123 and a top outer welding ring 6124, where the top main body sealing plate 6121 and the top additional sealing plate 6122 are both in a circular plate structure, the inner peripheral edge of the top main body sealing plate 6121 close to the impeller shaft core 611 is welded and fixed to the top sealing plate matching groove 6114 of the impeller shaft core through the top inner welding ring 6123, the outer peripheral edge of the top main body sealing plate 6121 close to the outer hub ring plate 614 is welded and fixed to the outer hub ring plate 614 through the top outer welding ring 6124, the top additional sealing plate 6122 is welded and fixed to the upward side surface of the top main body sealing plate 6121, and a plurality of exhaust holes which are uniformly arranged and can exhaust outwards are also arranged on the top inner welding ring 6123 and the top outer welding ring 6124; the bottom sealing plate assembly 613 also includes a bottom main body sealing plate 6131, a bottom additional sealing plate 6132, a bottom inner welding ring 6133 and a bottom outer welding ring 6134, where the bottom main body sealing plate 6131 and the bottom additional sealing plate 6132 are both of circular arc plate structures inclined from top to bottom, an inner peripheral edge portion of the bottom main body sealing plate 6131 close to the impeller shaft core 611 is welded and fixed to the bottom sealing plate matching groove 6115 of the impeller shaft core 611 through the bottom inner welding ring 6133, an outer peripheral edge portion of the bottom main body sealing plate 6131 close to the outer hub ring plate 614 is welded and fixed to the outer hub ring plate 614 through the bottom outer welding ring 6134, the bottom additional sealing plate 6132 is welded and fixed to a downward facing side surface of the bottom main body sealing plate 6131, and a plurality of vent holes which are uniformly arranged and can exhaust outwards are also arranged on the bottom inner welding ring 6133 and the bottom outer welding ring 6134, the bottom main body sealing plate 6131 is provided with a plurality of bottom main body sealing plate exhaust holes 61311 which penetrate through the thickness direction of the bottom main body sealing plate 6131 and are uniformly distributed, the bottom additional sealing plate 6132 is provided with a plurality of bottom additional sealing plate waist-shaped grooves 61321 which penetrate through the thickness direction of the bottom additional sealing plate 6132 and are uniformly distributed, the bottom additional sealing plate waist-shaped grooves 61321 can enhance the strength of the bottom additional sealing plate 6132, exhaust is guaranteed under the condition that the bottom additional sealing plate 6132 and the bottom main body sealing plate 6131 work at high temperature for a long time, and good heat dissipation and stress relief effects are achieved.

Further, the plurality of blade elements 62 of the impeller assembly 6 are welded and fixed to the outer peripheral side surface of the outer hub ring plate 614 at equal intervals in the circumferential direction of the outer hub ring plate 614, and the blade elements 62 are formed by stacking and welding four arc plate elements, two longer lengths in the middle of the four arc plate elements form the long blade plate 621, two shorter lengths in the upper and lower portions form the short blade plate 622, and one long blade plate exhaust hole 6211 is opened at a corresponding position of the two long blade plates 621, and the plurality of long blade plate exhaust holes 6211 can ensure that the blade elements 62 exhaust air under the condition of long-term high-temperature operation, so as to achieve good heat dissipation and stress relief effects.

Referring to fig. 1 to 4, the height of the nacelle inner ring 72 of the nacelle assembly 7 is smaller than the overall height of the nacelle outer ring 71, the nacelle outer ring 71 includes two nacelle outer ring single pieces 711 fixedly mounted together by screws, the vertical cross-sections of the two nacelle outer ring single pieces 711 are both in an Contraband-shaped structure, the nacelle inner ring 72 is positioned and connected to the nacelle outer ring single piece 711 at the lower portion by a plurality of guide vanes 73, and the impeller assembly 6 is disposed at the inner position of the nacelle outer ring single piece 711 at the upper portion and corresponds to the upper position of the nacelle inner ring 72; the outer ring single body part 711 of the air guide sleeve is provided with an outer ring single body part main body plate 7111 in a circular tube plate structure, and an outer ring single body part upper connecting plate 7112 and an outer ring single body part lower connecting plate 7113 which are formed at the upper end and the lower end of the outer ring single body part main body plate 7111, the lower end parts of the support tubes 74 are welded on the outer ring single body part upper connecting plate 7112 of the outer ring single body part 711 at the upper part at intervals, the outer ring single body part lower connecting plate 7113 of the outer ring single body part 711 at the upper part is fixedly connected with the outer ring single body part upper connecting plate 7112 of the outer ring single body part 711 at the lower part in a screw connection mode, a plurality of outer ring single body part reinforcing rib plates 7114 are welded between the outer ring single body part upper connecting plate 7112 and the outer ring single body part lower connecting plate 7113 at intervals, and the plurality of outer ring single body part reinforcing rib plates 7114 are uniformly arranged around the circumferential direction of the outer ring single body part main body plate 7111, and the strength of the outer ring single-piece member 711 can be effectively enhanced.

In this embodiment, the protective conical cover 3, the central tube 43, the cone shroud reinforcing waist ring 321, the single member 711 of the nacelle outer ring, the nacelle inner ring 72, the impeller shaft core clamp ring 6112 and the plurality of support tubes 74 are all preferably made of high temperature resistant inconel stainless steel, the transmission shaft body 51 is also preferably made of high temperature resistant inconel stainless steel, and the long blade plates 621 and the short blade plates 622 of the blades 62 are both preferably made of high nickel base alloy; experiments prove that the technical scheme provided by the utility model can meet the requirements that the service temperature is 800-1200 ℃, the continuous working can be used in a severe environment for 120 days, and the total single-machine service time can be more than 40000 hours; the advantages of long service life, high temperature resistance, corrosion resistance (sulfide, chloride and the like), carburization resistance (carbon ion infiltration) and the like can be realized, and the firing requirements of equipment such as various industrial kilns, roasting furnaces, graphitizing furnaces and the like can be met; in addition, the use effect on special graphite furnaces and graphite kiln equipment is also very excellent.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims

1. A high-temperature circulating fan device for industrial kilns is characterized by comprising: an upper fixed flange plate (1) installed on the top of the kiln; the driving motor mechanism (2) is fixedly arranged on the upper fixed flange plate (1), and the driving motor mechanism (2) comprises a motor (21); the protective conical cover (3) is provided with a square flange piece (31) and a cone housing (32), the square flange piece (31) is fixedly arranged below the upper fixed flange plate (1), the cone housing (32) is formed below the square flange piece (31), and high-temperature-resistant cotton (33) with a high-temperature-resistant effect is filled in the protective conical cover (3); a cylinder component (4) which is arranged at the central position inside the square flange piece (31) and the cone cover (32) from top to bottom in a penetrating way, and the cylinder component (4) comprises an outer cylinder (41), an inner cylinder (42), a central pipe (43), a water inlet pipe (44) and a water outlet pipe (45), the inner part of the outer cylinder (41) is hollow and forms an outer cylinder inner cavity (411), the inner cylinder (42) is arranged in the outer cylinder inner cavity (411), an inner cylinder bottom plate (421) is welded and fixed at the bottom of the inner cylinder (42), the central tube (43) is welded and fixed on the bottom plate (421) of the inner cylinder body and the bottom plate of the outer cylinder body (41) and extends out of the bottom of the outer cylinder body (41) downwards, the water inlet pipe (44) and the water outlet pipe (45) can conduct flow guiding operation of inputting and outputting cooling water inside the outer cylinder body (41) and the inner cylinder body (42) so as to cool the inside of the outer cylinder body (41) and the inner cylinder body (42); the transmission shaft assembly (5) comprises a transmission shaft body (51) which extends along the vertical direction and is in transmission connection with the motor (21) in a belt pulley connection mode, and the transmission shaft body (51) penetrates through the central pipe (43) and the bottom plate of the cone housing (32) from top to bottom and then extends out of the cone housing (32) downwards; an impeller assembly (6) comprising an impeller hub member (61) and a plurality of blade members (62), the impeller hub member (61) being fixedly attached to the lower end portion of the drive shaft body (51), and the plurality of blade members (62) being welded to the outer peripheral side surface of the impeller hub member (61) at equal intervals around the circumferential direction of the impeller hub member (61); the utility model provides a kuppe subassembly (7), including a kuppe outer lane (71) and a kuppe inner circle (72) be connected with a plurality of guide vanes (73) between kuppe outer lane (71) and kuppe inner circle (72), just kuppe outer lane (71) upper portion welding has many stay tubes (74) that extend the setting along vertical direction, the upper end tip of many stay tubes (74) with protection conical cover (3) welded fastening is in the same place to realize the fixed connection of kuppe outer lane (71) and protection conical cover (3).

2. The high-temperature circulating fan device for the industrial kilns as claimed in claim 1, characterized in that a plurality of upper fixing flange plate mounting holes (11) are formed at the edge position of the upper fixing flange plate (1) at intervals, four channel steels (12) are welded on the upper fixing flange plate (1), the four channel steels (12) are arranged in a groined structure, and hoisting holes (121) are formed in the end parts of the two ends of the channel steels (12) in the length direction.

3. The high-temperature circulating fan device for industrial kilns, according to claim 2, characterized in that the driving motor mechanism (2) further comprises a mounting bracket (22) and a motor fixing plate (23), the mounting bracket (22) comprises a mounting bracket body plate (221), a pair of mounting bracket connecting plates (222) are formed on the mounting bracket body plate (221), a plurality of mounting bracket connecting plate kidney-shaped holes (2221) are formed on the mounting bracket connecting plates (222), a motor fixing plate connecting plate (231) is formed on the motor fixing plate (23) and at a position corresponding to the mounting bracket connecting plate (222), and a bolt capable of moving back and forth is arranged in the mounting bracket connecting plate kidney-shaped hole (2221) and locked with the motor fixing plate connecting plate (231) to fixedly mount the mounting bracket (22) and the motor fixing plate (23), motor (21) fixed mounting is in one side position department of installing support (22) is kept away from in motor fixed plate (23), and this motor (21) has motor output shaft (211) that a court downwardly extending set up, and at a lower extreme tip fixedly connected with motor pulley (212) of this motor output shaft (211) the lower part of motor (21) still is provided with and is connected to motor protection casing (213) on channel-section steel (12) of going up mounting flange board (1), this motor protection casing (213) still with installing support (22) fixed connection is in the same place, just motor pulley (212) hold in this motor protection casing (213), and the top tip of transmission shaft body (51) still fixedly connected with transmission shaft pulley (52), and motor pulley (212) are gone up the cover and are equipped with a drive belt (214), and this drive belt (214) pass suit behind the installing support main part board (221) of installing support (22) is in the institute The transmission shaft belt pulley (52) is arranged on the motor belt pulley (212) so as to realize the transmission connection between the motor belt pulley (212) and the transmission shaft belt pulley (52).

4. The high-temperature circulating fan device for the industrial kiln as claimed in claim 1, wherein a plurality of square flange waist-shaped holes (311) which can ventilate and dissipate heat and eliminate the thermal deformation of the body at high temperature are formed on the square flange (31) of the protection conical cover (3), a cone cover shell reinforcing waist ring (321) in a circular ring structure is fixedly welded at the middle position of the cone cover shell (32) in the height direction, a plurality of reinforcing waist ring transverse connecting rods (322) are welded on the cone housing reinforcing waist ring (321) at intervals around the circumferential direction of the cone housing reinforcing waist ring and at positions corresponding to the plurality of supporting pipes (74), and the end parts of one ends, far away from the cone housing reinforcing waist ring (321), of the plurality of reinforcing waist ring transverse connecting rods (322) are welded and fixed with the corresponding supporting pipes (74).

5. The high-temperature circulating fan device for the industrial kiln as claimed in claim 1, wherein an upper fixing flange plate through hole (13) is formed at a central position of the upper fixing flange plate (1), the inner cylinder (42) of the cylinder assembly (4) is inserted into the upper fixing flange plate through hole (13), and an upper cylinder of the inner cylinder (42) protrudes to a position above the upper fixing flange plate through hole (13); an inner cylinder flange plate (422) is further arranged at the top end of the inner cylinder (42), a plurality of inner cylinder flange plate reinforcing rib plates (423) are further welded between the upper fixed flange plate (1) and the inner cylinder flange plate (422), the plurality of inner cylinder flange plate reinforcing rib plates (423) are uniformly distributed around the circumferential direction of the inner cylinder (42), and the plurality of inner cylinder flange plate reinforcing rib plates (423) are welded on the outer cylinder of the inner cylinder (42) and fixedly connected with the inner cylinder flange plate (422) and the inner cylinder (42) body; an upper bearing seat (53) is further sleeved at the position of the near end part of the top end of the transmission shaft body (51) and at the position corresponding to the lower part of the transmission shaft belt pulley (52), an upper bearing seat mounting flange plate (531) is fixedly mounted below the upper bearing seat (53), the upper bearing seat mounting flange plate (531) is fixedly connected to the inner cylinder flange plate (422) in a screw connection mode, an upper bearing seat mounting flange plate center hole (5311) through which the transmission shaft body (51) can pass is further formed at the central position of the upper bearing seat mounting flange plate (531), a plurality of upper bearing seat mounting flange plate ventilation holes (5312) are further formed in the upper bearing seat mounting flange plate (531), the plurality of upper bearing seat mounting flange plate ventilation holes (5312) are communicated with the inner cavity of the inner cylinder (42), and an upper bearing seat mounting flange plate is mounted on each of the plurality of upper bearing seat mounting flange plate ventilation holes (5312) The vent hole cover plate (5313) is also provided with a transmission shaft belt pulley protective cover (54) on the upper bearing seat mounting flange plate (531), the transmission shaft belt pulley (52) and the upper bearing seat (53) are both accommodated in the transmission shaft belt pulley protective cover (54), and the transmission shaft belt pulley protective cover (54) can effectively protect the transmission shaft belt pulley (52); a lower bearing seat (55) is sleeved at the position close to the middle of the height direction of the transmission shaft body (51) and at the position corresponding to the upper part of the inner cylinder body bottom plate (421), a lower bearing seat mounting flange plate (551) is fixedly welded on the surface of the upper side of the inner cylinder body bottom plate (421), the lower bearing seat (55) is fixedly connected with the lower bearing seat mounting flange plate (551) in a screw connection mode, a lower bearing seat mounting flange plate center hole (5511) through which the transmission shaft body (51) can pass is also formed at the center of the lower bearing seat mounting flange plate (551), a circle of asbestos rope embedding annular groove (5512) is formed at the lower part of the lower bearing seat mounting flange plate center hole (5511), an asbestos rope (56) is embedded in the asbestos rope embedding annular groove (5512), and the asbestos rope (56) is arranged between the lower bearing seat mounting flange plate (551) and the transmission shaft body (51), an asbestos rope pressing ring (561) capable of effectively pressing an asbestos rope (56) is further mounted on the lower bearing seat mounting flange plate (551) in a screw connection mode; and a transmission shaft heat dissipation blade piece (57) capable of forming air blowing is fixedly arranged on the body of the transmission shaft body (51) and corresponds to the upper position of the lower bearing seat (55) in a screw connection mode.

6. A high-temperature circulating fan apparatus for industrial kilns, as claimed in claim 5, wherein the radial diameter of said inner cylinder bottom plate (421) is larger than the radial diameter of the body of the inner cylinder (42), the shape of the inner cylinder bottom plate (421) is adapted to the inner cavity of the outer cylinder (41), and the outer peripheral edge of the inner cylinder bottom plate (421) is welded and fixed to the inner sidewall of said outer cylinder (41) and divides the outer cylinder inner cavity (411) of the outer cylinder (41) into two parts, an outer cylinder bottom plate (412) having a pan-bottom plate structure is welded and fixed to the bottom of the outer cylinder (41), and a water tank plate (413) having a shape adapted to the shape of said outer cylinder inner cavity (411) is welded at a position of the outer cylinder (41) near the bottom thereof and corresponding to a position between the outer cylinder bottom plate (412) and the inner cylinder bottom plate (421), the outer periphery of the water tank plate (413) is also welded and fixed on the inner side wall of the outer cylinder body (41), the inner part of the inner cavity (411) of the outer cylinder body is positioned at the upper part of the bottom plate (421) of the inner cylinder body and corresponds to a cavity between the outer cylinder body (41) and the inner cylinder body (42) to form a water passing cavity (4111), a cylinder partition plate (46) which is welded and fixed with the outer cylinder body (41) and the inner cylinder body (42) and is of a circular plate structure is further arranged at the middle position in the height direction in the water passing cavity (4111), a plurality of cylinder partition plate water passing holes (461) penetrating through the thickness direction of the cylinder partition plate are formed in the cylinder partition plate (46), a water inlet cavity (4112) is formed in the inner cavity (411) of the outer cylinder body and corresponds to the water tank plate (413) and the outer bottom plate (412), and the lower part of the inner cavity (411) of the outer cylinder body and corresponds to the water tank plate (413) and the outer bottom plate (412) ) The cavity between then constitutes there is a water tank die cavity (4113) inside intake antrum (4112) and still welded fastening has a plurality of water pipes (414) between interior barrel bottom plate (421) and water tank board (413), a plurality of water pipes (414) surround all sides side interval distribution of interior barrel bottom plate (421) and a plurality of water pipes (414) all set up in the position department that corresponds to water passing chamber (4111), and a plurality of water pipes (414) all communicate with water passing chamber (4111) and water tank die cavity (4113), thereby realize the switch-on of water passing chamber (4111) and water tank die cavity (4113); the central pipe (43) penetrates through the central positions of the inner cylinder bottom plate (421), the water tank plate (413) and the outer cylinder bottom plate (412) from top to bottom along the vertical direction and outwards extends out of the outer cylinder bottom plate (412), the central pipe (43) and the outer cylinder bottom plate are welded and fixed together, a water tank plate central hole (4131) through which the central pipe (43) can penetrate is formed in the central position of the water tank plate (413), a plurality of water outlet annular grooves (4132) are formed in the position, corresponding to the outer peripheral side of the water tank plate central hole (4131), of the water tank plate (413) at intervals, a water retaining ring (4133) is further welded and fixed in the central position of the surface of the lower side of the water tank plate (413), and the plurality of water outlet annular grooves (4132) are arranged on the water tank plate (413) at the upper position corresponding to the inside of the water retaining ring (4133); the water inlet pipe (44) is arranged outside the outer cylinder body (41) and extends along the vertical direction, the upper part of the water inlet pipe (44) is fixedly welded with the upper fixed flange plate (1), the input end of the upper end part of the water inlet pipe extends out of the upper fixed flange plate (1), the output end of the lower end part of the water inlet pipe (44) is fixedly welded on the outer cylinder body (41) at the position corresponding to the water inlet cavity (4112), and the output end of the lower end part of the water inlet pipe (44) is communicated with the water inlet cavity (4112); outlet pipe (45) set up in the outside of outer barrel (41) and extend the setting along vertical direction equally, the input welded fastening of this outlet pipe (45) lower extreme tip correspond on outer barrel (41) the top position department of barrel baffle (46), and the input of this outlet pipe (45) with cross water cavity (4111) and switch on mutually, and the upper portion of this outlet pipe (45) with go up mounting flange board (1) welded fastening together and the output of its upper end tip is visited this and is gone up mounting flange board (1).

7. The high-temperature circulating fan device for the industrial kiln according to claim 1, characterized in that a plurality of outer cylinder reinforcing rib plates (415) are welded on the upper part of the outer side surface of the outer cylinder (41) and around the circumferential direction of the outer cylinder, and the plurality of outer cylinder reinforcing rib plates (415) are welded and fixed with the upper fixed flange plate (1) and the body of the outer cylinder (41); the upper portion of the inner cylinder body (42) body is provided with a plurality of inner cylinder body heat dissipation through holes (424) capable of achieving the heat dissipation and exhaust functions, the bottom of an inner cavity of the inner cylinder body (42) is provided with a plurality of inner cylinder body internal reinforcing rib plates (425) on the inner cylinder body bottom plate (421), the inner cylinder body internal reinforcing rib plates (425) are arranged at the edge position of the outer peripheral side of the inner cylinder body bottom plate (421) and distributed at intervals in the circumferential direction of the inner cylinder body bottom plate (421), and the inner cylinder body internal reinforcing rib plates (425) are welded and fixed with the inner cylinder body (42) body and the inner cylinder body bottom plate (421).

8. The high-temperature circulating fan device for the industrial kiln is characterized in that the impeller hub ring piece (61) of the impeller assembly (6) comprises an impeller shaft core (611), a top sealing plate assembly (612), a bottom sealing plate assembly (613) and an outer hub ring plate (614), wherein the top sealing plate assembly (612) and the bottom sealing plate assembly (613) are welded and fixed between the impeller shaft core (611) and the outer hub ring plate (614) in an up-and-down spaced state; the impeller shaft core (611) is arranged at the center of the impeller hub ring piece (61), an impeller shaft core inner hole (6111) penetrating through the impeller shaft core (611) in the height direction is arranged in the impeller shaft core (611), the impeller shaft core inner hole (6111) is of a tapered hole structure with a large upper part and a small lower part, the lower end part of the transmission shaft body (51) is formed into a transmission shaft matching part (511), the shape of the transmission shaft matching part (511) is matched with that of the impeller shaft core inner hole (6111) and is also of a tapered body structure with a large upper part and a small lower part, the transmission shaft matching part (511) and the impeller shaft core inner hole (6111) are installed together in a matching mode, the transmission shaft matching part (511) and the impeller shaft core (611) are fixedly installed in a key connection mode, and the lower locking block (512) of the transmission shaft matching part is further formed at the lower part of the transmission shaft matching part (511), the lower locking block (512) of the matching part of the transmission shaft is of a conical structure with a small upper part and a large lower part, an impeller shaft core clamping ring (6112) is arranged at the lower part of the impeller shaft core (611), the impeller shaft core clamping ring (6112) consists of two semi-circular ring-shaped circular ring parts, an impeller shaft core clamping ring inner hole (61121) is formed inside the impeller shaft core clamping ring (6112), the shape of the impeller shaft core clamping ring inner hole (61121) is matched with that of the lower locking block (512) of the matching part of the transmission shaft, the impeller shaft core clamping ring and the lower locking block are installed together in a matching way, a connecting screw capable of locking the impeller shaft core clamping ring (6112) is further arranged on the impeller shaft core clamping ring (6112), the transmission shaft body (51) can be tightly connected with the impeller shaft core (611) through locking of the connecting screw, and a plurality of shaft avoiding shaft holes (6113) are further arranged on the inner peripheral side wall of the impeller shaft core inner hole (6111) of the impeller shaft core, and a top seal plate matching groove (6114) and a bottom seal plate matching groove (6115) are respectively formed at the outer edge positions of the upper end part and the lower end part of the impeller shaft core (611) in the height direction; the top sealing plate assembly (612) comprises a top main body sealing plate (6121), a top additional sealing plate (6122), a top inner welding ring (6123) and a top outer welding ring (6124), wherein the top main body sealing plate (6121) and the top additional sealing plate (6122) are both in circular plate structure, the inner peripheral edge part of the top main body sealing plate (6121) close to the impeller shaft core (611) is fixedly welded on a top sealing plate matching groove (6114) of the impeller shaft core through the top inner welding ring (6123), the outer peripheral edge part of the top main body sealing plate (6121) close to the outer hub ring plate (614) is fixedly welded on the outer hub ring plate (614) through the top outer welding ring (6124), the top additional sealing plate (6122) is fixedly welded on one side surface of the top main body sealing plate (6121) facing upwards, and a plurality of uniform rows of exhaust gas are uniformly arranged on the top inner welding ring (6123) and the top outer welding ring (6124) and are arranged on the top outer welding ring (6124) and can exhaust outwards Air holes; the bottom sealing plate assembly (613) also comprises a bottom main body sealing plate (6131), a bottom additional sealing plate (6132), a bottom inner welding ring (6133) and a bottom outer welding ring (6134), wherein the bottom main body sealing plate (6131) and the bottom additional sealing plate (6132) are both of arc plate structure structures which are inclined outwards from top to bottom, the inner peripheral edge part of the bottom main body sealing plate (6131) close to the impeller shaft core (611) is welded and fixed on the bottom sealing plate matching groove (6115) of the impeller shaft core (611) through the bottom inner welding ring (6133), the outer peripheral edge part of the bottom main body sealing plate (6131) close to the outer hub ring plate (614) is welded and fixed on the outer hub ring plate (614) through the bottom outer welding ring (6134), and the bottom additional sealing plate (6132) is welded and fixed on the surface of the bottom main body sealing plate (6131) facing downwards, a plurality of exhaust holes which are evenly distributed and can exhaust outwards are also formed in the bottom inner welding ring (6133) and the bottom outer welding ring (6134), a plurality of bottom main body sealing plate exhaust holes (61311) which penetrate through the bottom main body sealing plate in the thickness direction and are evenly distributed are formed in the bottom main body sealing plate (6131), and a plurality of bottom additional sealing plate waist-shaped grooves (61321) which penetrate through the bottom additional sealing plate in the thickness direction and are evenly distributed are formed in the bottom additional sealing plate (6132).

9. The high-temperature circulating fan apparatus for industrial kilns as claimed in claim 8, wherein said plurality of blade members (62) of said impeller unit (6) are welded and fixed to the outer peripheral side surface of said outer hub plate (614) around the circumferential direction of said outer hub plate (614) at equal intervals, and said blade members (62) are formed by stacking and welding four arc plates, the middle two arc plates having a longer length are formed as long blade plates (621), the upper and lower two arc plates having a shorter length are formed as short blade plates (622), and one long blade plate exhaust hole (6211) is opened at a corresponding position of the two long blade plates (621).

10. The high-temperature circulating fan device for the industrial kiln is characterized in that the height of a flow guide cover inner ring (72) of the flow guide cover assembly (7) is smaller than the whole height of the flow guide cover outer ring (71), the flow guide cover outer ring (71) comprises an upper flow guide cover outer ring single piece (711) and a lower flow guide cover outer ring single piece (711) which are fixedly arranged together in a screw connection mode, the vertical sections of the two flow guide cover outer ring single pieces (711) are both in an Contraband-shaped structure, the flow guide cover inner ring (72) is positioned and connected to the flow guide cover outer ring single piece (711) positioned at the lower part through a plurality of flow guide vanes (73), and the impeller assembly (6) is arranged at the inner position of the flow guide cover outer ring single piece (711) positioned at the upper part and corresponds to the upper position of the flow guide cover inner ring (72); the guide hood outer ring single piece (711) is provided with an outer ring single piece main body plate (7111) in a circular tube plate structure, and an outer ring single piece upper connecting plate (7112) and an outer ring single piece lower connecting plate (7113) which are formed at the upper end and the lower end of the outer ring single piece main body plate (7111), the lower end parts of a plurality of supporting tubes (74) are welded on the outer ring single piece upper connecting plate (7112) of the outer ring single piece (711) positioned at the upper part at intervals, the outer ring single piece lower connecting plate (7113) of the outer ring single piece (711) positioned at the upper part is fixedly connected with the outer ring single piece upper connecting plate (7112) of the outer ring single piece (711) positioned at the lower part in a screw connection mode, a plurality of outer ring single piece reinforcing rib plates (7114) are welded between the outer ring single piece upper connecting plate (7112) and the outer ring single piece lower connecting plate (7113) at intervals, and the plurality of outer ring single piece reinforcing rib plates (7114) are uniformly arranged around the circumferential direction of the outer ring single piece main body plate (7111) And (4) placing.