阅读说明：本技术 一种核电厂气机房屋顶风机叶轮 (Nuclear power plant gas engine house top fan impeller ) 是由 张琦 谢云川 黄雪刚 赵林 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种核电厂汽机房屋顶风机叶轮,包括轮盘和设于所述轮盘上的扇叶,所述扇叶为中空结构,所述轮盘上设有第一通孔,所述第一通孔内穿设有连接管,所述连接管上设有第一连接环,所述第一通孔内壁上设有与所述第一连接环相配合的第一活动槽,所述连接管上设有安装板；所述安装板上设有刮板和接料盒,所述接料盒设于所述刮板一侧；通过将扇叶做成中空结构,使整个叶轮更加轻便,减小扇叶重量,从而减小叶轮转动惯性,增加叶轮启动速度,实现了叶轮的轻量化生产,制作方便且成本低,极大提高产品竞争力。(The invention discloses a steam turbine room roof fan impeller of a nuclear power plant, which comprises a wheel disc and fan blades arranged on the wheel disc, wherein the fan blades are of a hollow structure, a first through hole is formed in the wheel disc, a connecting pipe is arranged in the first through hole in a penetrating manner, a first connecting ring is arranged on the connecting pipe, a first movable groove matched with the first connecting ring is arranged on the inner wall of the first through hole, and an installation plate is arranged on the connecting pipe; the mounting plate is provided with a scraper and a material receiving box, and the material receiving box is arranged on one side of the scraper; through making hollow structure with the flabellum, make whole impeller more light, reduce flabellum weight to reduce impeller rotation inertia, increase impeller start-up speed, realized the lightweight production of impeller, the preparation is convenient and with low costs, greatly improves product competitiveness.)

1. The utility model provides a nuclear power plant steam turbine room roof fan impeller, includes rim plate (1) and locates flabellum (3) on rim plate (1), its characterized in that: the fan blade (3) is of a hollow structure, a first through hole is formed in the wheel disc (1), a connecting pipe (2) penetrates through the first through hole, a first connecting ring (22) is arranged on the connecting pipe (2), a first movable groove matched with the first connecting ring (22) is formed in the inner wall of the first through hole, and a mounting plate (21) is arranged on the connecting pipe (2); the scraper blade (41) and the material receiving box (5) are arranged on the mounting plate (21), and the material receiving box (5) is arranged on one side of the scraper blade (41).

2. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: a second movable groove is formed in the mounting plate (21), a third movable groove is formed in the side wall of the second movable groove, a second connecting ring (44) is arranged in the second movable groove, a first connecting plate (4) matched with the third movable groove is arranged on the second connecting ring (44), and the scraper (41) is arranged on the first connecting plate (4); be equipped with second connecting plate (25) on the second activity groove lateral wall, be equipped with first spout on second connecting plate (25), be equipped with first slider (42) in the first spout, be equipped with first connecting spring (421) on first slider (42) lateral wall, the first connecting spring (421) other end link firmly in on the first spout inner wall, be equipped with first connecting rope (43) on first slider (42), first connecting rope (43) other end link firmly in on second go-between (44).

3. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: be equipped with first connecting groove on mounting panel (21), first connecting groove is L type structure, be equipped with on material receiving box (5) with first connecting groove matched with head rod (51), be equipped with the fourth activity groove on the first connecting groove lateral wall, be equipped with gag lever post (27) in the fourth activity inslot, gag lever post (27) are worn to locate the first connecting inslot, gag lever post (27) one end is equipped with first spacing spring (271), be equipped with the fifth activity groove on the fourth activity groove lateral wall, be equipped with on gag lever post (27) with fifth activity groove complex push pedal (272).

4. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: a plurality of first movable cavities are arranged on the first connecting ring (22), a sealing film (28) is arranged at the top of each first movable cavity, a balancing weight (23) is arranged in each first movable cavity, a second connecting spring (231) is arranged at the bottom of each balancing weight (23), and one end of each second connecting spring (231) is fixedly connected to the bottom of each first movable cavity; a first through groove is formed in the side wall of the first movable cavity, a second movable cavity is formed in the inner wall of the first through groove, a first limiting plate (24) penetrates through the first through groove, and a limiting groove (12) matched with the first limiting plate (24) is formed in the inner wall of the first movable groove; and a second limiting plate (241) is arranged on the first limiting plate (24), and a first return spring (242) is arranged on the second limiting plate (241).

5. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: be equipped with the mounting groove on rim plate (1), be equipped with second connecting rod (6) on flabellum (3), second connecting rod (6) are worn to locate in the mounting groove, the mounting groove bottom is equipped with the fixed slot, be equipped with first logical chamber on second connecting rod (6), it leads to the groove to be equipped with the second on the first chamber lateral wall that leads to, the second lead to the inslot wear to be equipped with fixed slot matched with first fixed block (62), second connecting rod (6) are cylindrical structure.

6. The nuclear power plant gas engine house roof fan impeller of claim 5, characterized in that: the connecting device is characterized in that a connecting block (66) is arranged on the second connecting rod (6), a second movable cavity communicated with the first through cavity is arranged on the connecting block (66), a first transmission wheel (661) is arranged in the second movable cavity, a first push rod (61) penetrates through the first through cavity, a third connecting plate (612) is arranged on the first push rod (61), a third connecting rod (613) is movably connected onto the third connecting plate (612), the other end of the third connecting rod (613) is movably connected onto the first fixing block (62), a first bump (621) is arranged on the first fixing block (62), a first guide groove is arranged on the first bump (621), a fourth connecting rod (615) is arranged at the upper bottom of the third connecting plate (612), and a supporting block (614) matched with the first bump (621) is arranged on the fourth connecting rod (615), the first transmission wheel (661) can drive the first push rod (61) to move up and down.

7. The nuclear power plant gas engine house roof fan impeller of claim 5, characterized in that: a connecting shaft (616) is arranged at the bottom of the second connecting rod (6), a first connecting hole matched with the connecting shaft (616) is arranged at the bottom of the fixed groove, a supporting spring (11) is arranged in the first connecting hole, and a second push plate (111) is arranged on the supporting spring (11); a transmission disc (611) is arranged on the first push rod (61), a second transmission wheel (67) used for transmitting the first transmission wheel (661) and the transmission disc (611) is arranged in the second movable cavity, and a fourth connecting plate (662) is arranged at the top of the first transmission wheel (661); the connecting device is characterized in that a third connecting ring (63) is sleeved on the second connecting rod (6), a second connecting groove matched with the third connecting ring (63) is formed in the side wall of the wheel disc (1), and the second connecting groove is matched with the third connecting ring (63) through threads.

8. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: be equipped with second lug (65) on second connecting rod (6), the cover is equipped with fifth connecting plate (64) on second connecting rod (6), be equipped with first dog (644) and second dog (645) on fifth connecting plate (64), be equipped with second reset spring (646) on second dog (645), be equipped with fifth connecting rod (641) on fifth connecting plate (64), be equipped with on third connecting ring (63) a plurality of with fifth connecting rod (641) matched with second connecting hole (631), be equipped with on fifth connecting rod (641) be used for with fifth connecting rod (641) are fixed in stopper (647) in second connecting hole (631).

9. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: a sixth movable groove is formed in the fifth connecting rod (641), the limiting block (647) is arranged in the sixth movable groove, a second limiting spring (6471) is arranged on the limiting block (647), and the second limiting spring (6471) is fixedly connected to the inner wall of the sixth movable groove; a cavity communicated with the sixth movable groove is formed in the fifth connecting plate (64), a seventh movable groove is formed in the top of the cavity, a fourth connecting ring (642) is arranged in the seventh movable groove, a second connecting rope is arranged on the fourth connecting ring (642), one end of the second connecting rope is fixedly connected to the limiting block (647), and a first groove (643) is formed in the side wall of the seventh movable groove.

10. The nuclear power plant gas engine house roof fan impeller of claim 1, characterized in that: be equipped with second guide slot (34) on flabellum (3), still be equipped with the third chamber of moving about on flabellum (3), the third is equipped with runner (33) in the chamber of moving about, be equipped with third push pedal (331) on runner (33), runner (33) one side is equipped with movable rod (31), movable rod (31) one end is equipped with sixth connecting rod (311), be equipped with third reset spring (312) on sixth connecting rod (311), the third is moved about the intracavity and still is equipped with and is used for the transmission movable rod (31) with drive belt (32) of runner (33).

Technical Field

The invention belongs to the technical field of fan impellers, and particularly relates to a fan impeller of a gas engine house top of a nuclear power plant.

Background

The existing impeller for the steam turbine room roof fan of the nuclear power plant is mostly processed by adopting an aluminum alloy and low-pressure casting mode, and the manufacturing process can not make the impeller into a hollow structure, so that the whole impeller is heavy, large in rotational inertia and slow in starting, and light-weight production of the fan is not facilitated. The defects of time consumption and high cost of manufacture exist, and the product competitiveness is low; the working environment of the impeller leads to the back of the impeller to be attached with more dust and impurities, the impeller needs to be cleaned frequently to ensure the working effect of the impeller, and the maintenance frequency increases the cost.

Disclosure of Invention

The invention provides a top fan impeller of a building of a gas engine of a nuclear power plant, aiming at overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a nuclear power plant steam turbine room roof fan impeller comprises a wheel disc and fan blades arranged on the wheel disc, wherein the fan blades are of a hollow structure, a first through hole is formed in the wheel disc, a connecting pipe penetrates through the first through hole, a first connecting ring is arranged on the connecting pipe, a first movable groove matched with the first connecting ring is formed in the inner wall of the first through hole, and an installation plate is arranged on the connecting pipe; the mounting plate is provided with a scraper and a material receiving box, and the material receiving box is arranged on one side of the scraper; the fan blades are made into a hollow structure, so that the whole impeller is lighter and lighter, the weight of the fan blades is reduced, the rotation inertia of the impeller is reduced, the starting speed of the impeller is increased, the light-weight production of the impeller is realized, the manufacturing is convenient, the cost is low, and the product competitiveness is greatly improved; when the impeller is used, the connecting pipe drives the wheel disc to rotate together, the fan blades rotate along with the wheel disc, and the impeller is in a normal working state; when the connecting pipe loses power, the rotating speed of the connecting pipe is gradually reduced, the wheel disc and the connecting pipe rotate relatively, the scraper on the mounting plate is contacted with the back of the fan blade, and the fan blade is cleaned under the action of the scraper, so that the roof fan can be cleaned automatically once after working every time, the manual cleaning frequency is reduced, and the maintenance difficulty of the impeller is reduced; because the impeller of the roof fan is generally horizontally arranged, dust and impurities scraped from the fan blades fall into the material receiving box, and the impurities are collected through the material receiving box, so that the impurities are prevented from directly falling into a steam turbine room, and the use reliability of the impeller is ensured; the scraper blade is always in the same motion state with the material receiving box, and the scraper blade is always positioned on one side of the material receiving box, so that when the scraper blade hangs down the dust on the fan blades, part of the dust is collected in the material receiving box, and the hung dust can be conveniently treated.

A second movable groove is formed in the mounting plate, a third movable groove is formed in the side wall of the second movable groove, a second connecting ring is arranged in the second movable groove, a first connecting plate matched with the third movable groove is arranged on the second connecting ring, and the scraper is arranged on the first connecting plate; the improved structure of the sliding block is characterized in that a second connecting plate is arranged on the side wall of the second movable groove, a first sliding groove is formed in the second connecting plate, a first sliding block is arranged in the first sliding groove, a first connecting spring is arranged on the side wall of the first sliding block, the other end of the first connecting spring is fixedly connected to the inner wall of the first sliding groove, a first connecting rope is arranged on the first sliding block, and the other end of the first connecting rope is fixedly connected to the second connecting ring.

Be equipped with first connecting groove on the mounting panel, first connecting groove is L type structure, be equipped with on the material receiving box with first connecting groove matched with head rod, be equipped with the fourth activity groove on the first connecting groove lateral wall, be equipped with the gag lever post in the fourth activity inslot, the gag lever post is worn to locate in the first connecting groove, gag lever post one end is equipped with first spacing spring, be equipped with the fifth activity groove on the fourth activity groove lateral wall, be equipped with on the gag lever post with the push pedal of fifth activity groove matched with.

A plurality of first movable cavities are arranged on the first connecting ring, sealing films are arranged at the tops of the first movable cavities, balancing weights are arranged in the first movable cavities, second connecting springs are arranged at the bottoms of the balancing weights, and one ends of the second connecting springs are fixedly connected to the bottoms of the first movable cavities; a first through groove is formed in the side wall of the first movable cavity, a second movable cavity is formed in the inner wall of the first through groove, a first limiting plate penetrates through the first through groove, and a limiting groove matched with the first limiting plate is formed in the inner wall of the first movable groove; and a second limiting plate is arranged on the first limiting plate, and a first return spring is arranged on the second limiting plate.

The wheel disc is provided with a mounting groove, the fan blade is provided with a second connecting rod, the second connecting rod is arranged in the mounting groove in a penetrating mode, the bottom of the mounting groove is provided with a fixing groove, the second connecting rod is provided with a first through cavity, the side wall of the first through cavity is provided with a second through groove, the second through groove is internally provided with a first fixing block matched with the fixing groove in a penetrating mode, and the second connecting rod is of a cylindrical structure.

The connecting device is characterized in that a connecting block is arranged on the second connecting rod, a second movable cavity communicated with the first through cavity is arranged on the connecting block, a first driving wheel is arranged in the second movable cavity, a first push rod penetrates through the first through cavity, a third connecting plate is arranged on the first push rod, a third connecting rod is movably connected onto the third connecting plate, the other end of the third connecting rod is movably connected onto the first fixed block, a first convex block is arranged on the first fixed block, a first guide groove is formed in the first convex block, a fourth connecting rod is arranged at the bottom of the third connecting plate, a supporting block matched with the first convex block is arranged on the fourth connecting rod, and the first driving wheel can drive the first push rod to move up and down.

A connecting shaft is arranged at the bottom of the second connecting rod, a first connecting hole matched with the connecting shaft is arranged at the bottom of the fixed groove, a supporting spring is arranged in the first connecting hole, and a second push plate is arranged on the supporting spring; a driving disc is arranged on the first push rod, a second driving wheel used for driving the first driving wheel and the driving disc is arranged in the second movable cavity, and a fourth connecting plate is arranged at the top of the first driving wheel; and a third connecting ring is sleeved on the second connecting rod, a second connecting groove matched with the third connecting ring is arranged on the side wall of the wheel disc, and the second connecting groove is matched with the third connecting ring through threads.

The connecting device is characterized in that a second bump is arranged on the second connecting rod, a fifth connecting plate is sleeved on the second connecting rod, a first stop block and a second stop block are arranged on the fifth connecting plate, a second reset spring is arranged on the second stop block, a fifth connecting rod is arranged on the fifth connecting plate, a plurality of second connecting holes matched with the fifth connecting rod are formed in the third connecting ring, and a limiting block used for fixing the fifth connecting rod in the second connecting holes is arranged on the fifth connecting rod.

A sixth movable groove is formed in the fifth connecting rod, the limiting block is arranged in the sixth movable groove, a second limiting spring is arranged on the limiting block, and the second limiting spring is fixedly connected to the inner wall of the sixth movable groove; the fifth connecting plate is provided with a cavity communicated with the sixth movable groove, the top of the cavity is provided with a seventh movable groove, a fourth connecting ring is arranged in the seventh movable groove, a second connecting rope is arranged on the fourth connecting ring, one end of the second connecting rope is fixedly connected to the limiting block, and the side wall of the seventh movable groove is provided with a first groove.

The fan blade is provided with a second guide groove, a third movable cavity is further arranged on the fan blade, a rotating wheel is arranged in the third movable cavity, a third push plate is arranged on the rotating wheel, a movable rod is arranged on one side of the rotating wheel, a sixth connecting rod is arranged at one end of the movable rod, a third reset spring is arranged on the sixth connecting rod, and a transmission belt used for transmitting the movable rod and the rotating wheel is further arranged in the third movable cavity.

The invention has the following advantages: the fan blades are made into a hollow structure, so that the whole impeller is lighter and lighter, the weight of the fan blades is reduced, the rotation inertia of the impeller is reduced, the starting speed of the impeller is increased, the light-weight production of the impeller is realized, the manufacturing is convenient, the cost is low, and the product competitiveness is greatly improved; when the impeller is used, the connecting pipe drives the wheel disc to rotate together, the fan blades rotate along with the wheel disc, and the impeller is in a normal working state; after the connecting pipe loses power, the connecting pipe rotational speed reduces gradually, and rim plate and connecting pipe produce relative rotation, and the scraper blade on the mounting panel contacts with the flabellum back, does the clearance to the flabellum under the scraper blade effect, makes roof fan homoenergetic at every turn once can carry out once self-cleaning after work, reduces artifical clearance number of times, reduces the impeller and maintains the degree of difficulty.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view taken along a-a in fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of fig. 4 at B.

Fig. 6 is an enlarged view of fig. 4 at C.

Fig. 7 is a cross-sectional view taken along line B-B of fig. 2.

Fig. 8 is an enlarged view of fig. 7 at D.

Fig. 9 is a cross-sectional view taken along line C-C of fig. 2.

Fig. 10 is an enlarged view of fig. 9 at E.

Fig. 11 is a cross-sectional view taken along line D-D in fig. 2.

Fig. 12 is an enlarged view of fig. 11 at F.

Fig. 13 is a cross-sectional view taken along line E-E of fig. 2.

Fig. 14 is an enlarged view at G in fig. 13.

Fig. 15 is a right side view of the present invention.

Fig. 16 is a cross-sectional view taken along F-F in fig. 15.

Fig. 17 is an enlarged view at H in fig. 16.

Fig. 18 is an enlarged view at I in fig. 16.

Fig. 19 is an enlarged view at J in fig. 17.

Fig. 20 is a cross-sectional view taken along G-G in fig. 15.

Fig. 21 is an enlarged view at K in fig. 20.

Fig. 22 is a cross-sectional view taken along line H-H of fig. 15.

Fig. 23 is an enlarged view at L in fig. 22.

Fig. 24 is a cross-sectional view taken along line I-I of fig. 15.

Fig. 25 is an enlarged view of fig. 24 at M.

Detailed Description

As shown in fig. 1-25, a steam turbine room roof fan impeller of a nuclear power plant comprises a wheel disc 1 and fan blades 3 arranged on the wheel disc 1, wherein the fan blades 3 are of a hollow structure, a first through hole is formed in the wheel disc 1, a connecting pipe 2 is arranged in the first through hole in a penetrating manner, a first connecting ring 22 is arranged on the connecting pipe 2, a first movable groove matched with the first connecting ring 22 is formed in the inner wall of the first through hole, and a mounting plate 21 is arranged on the connecting pipe 2; the mounting plate 21 is provided with a scraper 41 and a material receiving box 5, and the material receiving box 5 is arranged on one side of the scraper 41; the fan blades are made into a hollow structure, so that the whole impeller is lighter and lighter, the weight of the fan blades is reduced, the rotation inertia of the impeller is reduced, the starting speed of the impeller is increased, the light-weight production of the impeller is realized, the manufacturing is convenient, the cost is low, and the product competitiveness is greatly improved; when the impeller is used, the connecting pipe drives the wheel disc to rotate together, the fan blades rotate along with the wheel disc, and the impeller is in a normal working state; when the connecting pipe loses power, the rotating speed of the connecting pipe is gradually reduced, the wheel disc and the connecting pipe rotate relatively, the scraper on the mounting plate is contacted with the back of the fan blade, and the fan blade is cleaned under the action of the scraper, so that the roof fan can be cleaned automatically once after working every time, the manual cleaning frequency is reduced, and the maintenance difficulty of the impeller is reduced; because the impeller of the roof fan is generally horizontally arranged, dust and impurities scraped from the fan blades fall into the material receiving box, and the impurities are collected through the material receiving box, so that the impurities are prevented from directly falling into a steam turbine room, and the use reliability of the impeller is ensured; the scraper blade is always in the same motion state with the material receiving box, and the scraper blade is always positioned on one side of the material receiving box, so that when the scraper blade hangs down the dust on the fan blades, part of the dust is collected in the material receiving box, and the hung dust can be conveniently treated.

A second movable groove is formed in the mounting plate 21, a third movable groove is formed in the side wall of the second movable groove, a second connecting ring 44 is arranged in the second movable groove, a first connecting plate 4 matched with the third movable groove is arranged on the second connecting ring 44, and the scraper 41 is arranged on the first connecting plate 4; a second connecting plate 25 is arranged on the side wall of the second movable groove, a first sliding groove is arranged on the second connecting plate 25, a first sliding block 42 is arranged in the first sliding groove, a first connecting spring 421 is arranged on the side wall of the first sliding block 42, the other end of the first connecting spring 421 is fixedly connected to the inner wall of the first sliding groove, a first connecting rope 43 is arranged on the first sliding block 42, and the other end of the first connecting rope 43 is fixedly connected to the second connecting ring 44; when the impeller is installed, the connecting pipe is sleeved on an output shaft of the motor, the motor drives the connecting pipe to rotate, the connecting pipe drives the installation plate and the wheel disc to rotate, the first sliding block is acted by centrifugal force when the connecting disc rotates, the first sliding block moves towards one end of the first sliding groove, the first sliding block pulls the first connecting rope to move when moving, the first connecting rope pulls the second connecting ring to move towards the outer side of the second movable groove, the second connecting ring drives the scraper to move towards the direction away from the fan blades, the scraper is at a certain distance from the fan blades, the phenomenon that the scraper obstructs the work of the fan blades when the impeller rotates is avoided, and the normal work of the; when the motor stops working, the centrifugal force on the first sliding block is reduced, the first sliding block moves back under the action of the first connecting spring, the first connecting rope is not pulled any more, the scraper moves towards the direction of the fan blades, the scraper is contacted with the fan blades, the fan blades and the scraper move relatively, the scraper plays a role in cleaning the back surfaces of the fan blades, the frequency of cleaning the fan blades is reduced, and the working effect of the fan blades is ensured; in order to ensure that the scraper can automatically move towards the direction of the fan blades, a fourth reset spring is arranged on the inner wall of the third movable groove, so that the scraper can automatically move back after moving every time.

A first connecting groove is formed in the mounting plate 21, the first connecting groove is of an L-shaped structure, a first connecting rod 51 matched with the first connecting groove is arranged on the material receiving box 5, a fourth movable groove is formed in the side wall of the first connecting groove, a limiting rod 27 is arranged in the fourth movable groove, the limiting rod 27 penetrates through the first connecting groove, a first limiting spring 271 is arranged at one end of the limiting rod 27, a fifth movable groove is formed in the side wall of the fourth movable groove, and a push plate 272 matched with the fifth movable groove is arranged on the limiting rod 27; the material receiving box can be selectively arranged on the mounting plate, and the impeller can be normally used even if the material receiving box is not arranged; when the material receiving box is installed, a first connecting rod is inserted into a first connecting groove, the top end of the first connecting rod is in contact with the inner wall of the first connecting groove, the first connecting rod is pushed towards the inner end of the first connecting groove, one end of the first connecting rod abuts against the inner wall of the first connecting groove, a limiting rod is pushed towards the direction of the first connecting groove, the limiting rod is inserted into the first connecting groove, the first connecting rod is positioned between the first connecting groove and the limiting rod, the first connecting rod is fixed in the first connecting groove under the action of the limiting rod, and the connection of the material receiving box and the installing plate is completed, so that dust is collected by using the material receiving box; when the material receiving box has more dust, the limiting rod is pushed out of the first connecting groove, the first connecting rod is pushed to the other end of the first connecting groove, the first connecting rod can be directly taken out of the first connecting groove, the disassembling difficulty of the material receiving box is reduced, and therefore impurities on the material receiving box can be conveniently cleaned; in order to prevent dust from flying out of the material receiving box when the material receiving box rotates, the magic tape can be laid at the bottom of the material receiving box, more dust hairs are collected in the material receiving box, and impurities cleaned from the fan blades are prevented from directly falling off from the roof fan.

A plurality of first movable cavities are arranged on the first connecting ring 22, a sealing film 28 is arranged at the top of each first movable cavity, a balancing weight 23 is arranged in each first movable cavity, a second connecting spring 231 is arranged at the bottom of each balancing weight 23, and one end of each second connecting spring 231 is fixedly connected to the bottom of each first movable cavity; a first through groove is formed in the side wall of the first movable cavity, a second movable cavity is formed in the inner wall of the first through groove, a first limiting plate 24 penetrates through the first through groove, and a limiting groove 12 matched with the first limiting plate 24 is formed in the inner wall of the first movable groove; a second limiting plate 241 is arranged on the first limiting plate 24, and a first return spring 242 is arranged on the second limiting plate 241; when the motor drives the connecting pipe to rotate, the rotating speed of the connecting pipe gradually rises, when the rotating speed of the connecting pipe reaches a specified speed, the balancing weight moves towards one end of the first movable cavity under the action of centrifugal force, the air on one side of the balancing weight is extruded when the balancing weight moves, the air is compressed and then extruded on the sealing film, the sealing film deforms under the action of air pressure, the sealing film is extruded on the inner wall of the first movable groove, the air pressure is extruded on the sealing film and pushes a first limiting plate to move towards the outer side of the first movable cavity, the first limiting plate is inserted into the limiting groove, the first connecting ring and the wheel disc form rotation stopping fit under the mutual fit of the first limiting plate and the limiting groove, the connecting pipe drives the wheel disc to rotate together when rotating, the fan blades; when the motor stop work, the rotational speed of connecting pipe reduces gradually, centrifugal force is not enough to promote the counter weight piece and removes, second connecting spring pulling counter weight piece moves back, the air in the first movable cavity of balancing weight no longer extrudees, first limiting plate is deviate from the spacing inslot under first reset spring effect, the seal membrane resumes deformation, connecting pipe and rim plate rotate by oneself under the inertia effect, because the quality of rim plate and mounting panel is different, the rim plate is also different with the inertia that the mounting panel received, the rim plate produces relative rotation with the mounting panel, the scraper blade passes through from the flabellum bottom surface, utilize the scraper blade to do the clearance to the flabellum bottom surface, accomplish the automatic clearance of flabellum, reduce the maintenance cost of fla.

A mounting groove is formed in the wheel disc 1, a second connecting rod 6 is arranged on the fan blade 3, the second connecting rod 6 is arranged in the mounting groove in a penetrating mode, a fixing groove is formed in the bottom of the mounting groove, a first through cavity is formed in the second connecting rod 6, a second through groove is formed in the side wall of the first through cavity, a first fixing block 62 matched with the fixing groove is arranged in the second through groove in a penetrating mode, and the second connecting rod 6 is of a cylindrical structure; the number of the fan blades can be installed according to actual needs; after the second connecting rod is inserted into the mounting groove, one end of the second connecting rod abuts against the inner wall of the fixing groove, the first fixing block extends out of the second through groove, the first fixing block abuts against the inner wall of the fixing groove, and the second connecting rod is fixed on the wheel disc under the mutual matching of the first fixing block and the fixing groove, so that the fan blades are mounted; through the cylindrical structure of second connecting rod, make the flabellum rotate appointed angle as required after the installation, do the adjustment to the performance of impeller, make the impeller be applicable to the operating mode of multiple difference, promote impeller result of use.

A connecting block 66 is arranged on the second connecting rod 6, a second movable cavity communicated with the first through cavity is arranged on the connecting block 66, a first transmission wheel 661 is arranged in the second movable cavity, a first push rod 61 penetrates through the first through cavity, a third connecting plate 612 is arranged on the first push rod 61, a third connecting rod 613 is movably connected onto the third connecting plate 612, the other end of the third connecting rod 613 is movably connected onto the first fixing block 62, a first bump 621 is arranged on the first fixing block 62, a first guide groove is arranged on the first bump 621, a fourth connecting rod 615 is arranged at the upper bottom of the third connecting plate 612, a supporting block 614 matched with the first bump 621 is arranged on the fourth connecting rod 615, and the first transmission wheel 661 can drive the first push rod 61 to move up and down; after the second connecting rod is inserted into the mounting groove, the first driving wheel is rotated, the first push rod is driven to move downwards by the first driving wheel, the third connecting plate is driven to move downwards by the drag rod, the third connecting rod rotates around the connecting point, the first fixing block is pushed by the third connecting rod to move towards the outer side of the second through groove, the first push rod continues to descend, the supporting block moves to the position of the first guide groove, the supporting block is matched with the first guide groove, the thrust is provided for the first fixing block again, the first fixing block is directly pushed out from the second through groove, and therefore the second connecting rod is fixed in the mounting groove by the first fixing block; through the mutual matching of the third connecting rod and the supporting block, thrust is respectively provided for the first fixing block from the top and the bottom, the first fixing block is prevented from being clamped in the second through groove in the moving process, and the first fixing block is ensured to normally extend out of the second through groove; after the supporting block pushes the first fixing block out, the supporting block is matched with the first bump to provide supporting force for the first fixing block, the first fixing block is prevented from entering the second through groove when the fan blade is used, and the connecting effect of the fan blade and the wheel disc is guaranteed.

A connecting shaft 616 is arranged at the bottom of the second connecting rod 6 and fixedly connected to the bottom of the fourth connecting rod, a first connecting hole matched with the connecting shaft 616 is arranged at the bottom of the fixing groove, a supporting spring 11 is arranged in the first connecting hole, and a second push plate 111 is arranged on the supporting spring 11; a transmission disc 611 is arranged on the first push rod 61, a second transmission wheel 67 for transmitting the first transmission wheel 661 and the transmission disc 611 is arranged in the second movable cavity, and a fourth connecting plate 662 is arranged at the top of the first transmission wheel 661; a third connecting ring 63 is sleeved on the second connecting rod 6, a second connecting groove matched with the third connecting ring 63 is arranged on the side wall of the wheel disc 1, and the second connecting groove is matched with the third connecting ring 63 through threads; after the second connecting rod is inserted into the mounting groove, the second connecting rod abuts against the inner wall of the fixing groove, the first driving wheel rotates to drive the first push rod to move downwards, the first push rod drives the connecting shaft to move downwards, the connecting shaft is inserted into the first connecting hole downwards, the connecting shaft pushes the first push plate to move downwards, the supporting spring provides thrust for the first push plate, the second connecting rod integrally generates an upward movement trend, the first fixing block further abuts against the inner wall of the fixing groove, and the connecting effect of the second connecting rod and the wheel disc is improved; after the second connecting rod is installed, the third connecting ring is shifted into the second connecting groove, the third connecting ring is fixed in the second connecting groove under the thread matching, the connecting effect of the second connecting rod and the wheel disc is improved by the third connecting ring, and the use reliability of the impeller is improved.

The second connecting rod 6 is provided with a second bump 65, the second connecting rod 6 is sleeved with a fifth connecting plate 64, the fifth connecting plate 64 is provided with a first stop 644 and a second stop 645, the second stop 645 is provided with a second return spring 646, the fifth connecting plate 64 is provided with a fifth connecting rod 641, the third connecting ring 63 is provided with a plurality of second connecting holes 631 matched with the fifth connecting rod 641, and the fifth connecting rod 641 is provided with a limiting block 647 for fixing the fifth connecting rod 641 in the second connecting holes 631; the third connecting ring is fixed in the second connecting groove and then pushes the fifth connecting plate towards the third connecting ring, the fifth connecting rod is inserted into the second connecting hole, the second bump is positioned between the first stop block and the second stop block, the other end of the second reset spring is abutted against the side wall of the second bump, the fan blade can rotate under the cylindrical structure of the second connecting rod, and the rotating angle of the fan blade is controlled under the matching of the second bump, the first stop block and the second stop block; when the impeller does not rotate, the bottom surface of the impeller is vertical to the scraper, so that the scraper can be used for cleaning the fan blades, and the cleaning effect of the scraper on the fan blades is improved; when the impeller rotates, under the action of release force and wind resistance, the fan blades automatically rotate in the rotating process, the second lug moves between the first stop block and the second stop block, the second lug extrudes the second reset spring, the second lug rotates from one side of the first stop block to one side of the second stop block, the fan blades rotate to an inclined angle, sufficient wind power can be generated when the fan blades rotate, and the scraper blade moves away from the fan blades under the action of the first slide block to enable the fan blades to have sufficient space to move; when the fan blades rotate, the fan blades are in two position states when in work and stop, the impeller rotation air volume is guaranteed, and the difficulty in cleaning the impeller is reduced.

A sixth movable groove is formed in the fifth connecting rod 641, the limiting block 647 is arranged in the sixth movable groove, a second limiting spring 6471 is arranged on the limiting block 647, and the second limiting spring 6471 is fixedly connected to the inner wall of the sixth movable groove; a cavity communicated with the sixth movable groove is formed in the fifth connecting plate 64, a seventh movable groove is formed in the top of the cavity, a fourth connecting ring 642 is arranged in the seventh movable groove, a second connecting rope is arranged on the fourth connecting ring 642, one end of the second connecting rope is fixedly connected to the limiting block 647, and a first groove 643 is formed in the side wall of the seventh movable groove; the bottom of the limiting block is provided with a third guide groove, when a fifth connecting rod is inserted into the second connecting hole, the third guide groove abuts against the side wall of the second connecting hole, the limiting block enters a sixth movable groove under the action of the third guide groove, after the fifth connecting rod is inserted into the second connecting hole, the limiting block extends out of the sixth movable groove, and the fifth connecting rod is fixed in the second connecting hole under the mutual matching of the limiting rod and the second connecting hole, so that the fifth connecting plate is fixed at the top of the third connecting ring, and the matching effect of the first stop block and the second stop block with the second bump is ensured; when the fan blades are disassembled, the fourth connecting ring is pulled upwards, the fourth connecting ring drives the second connecting rope to move, the second connecting rope pulls the limiting block to move into the sixth movable groove, and the limiting block is separated from the inner wall of the second connecting hole to be in contact with the inner wall of the second connecting hole, so that the fifth connecting plate can be directly taken out of the third connecting ring; under the first recess setting to snatch the fourth go-between from the side, provide the stress point for the fourth go-between, further reduce the dismantlement degree of difficulty of flabellum.

A second guide groove 34 is formed in the fan blade 3, a third movable cavity is further formed in the fan blade 3, a rotating wheel 33 is arranged in the third movable cavity, a third push plate 331 is arranged on the rotating wheel 33, a movable rod 31 is arranged on one side of the rotating wheel 33, a sixth connecting rod 311 is arranged at one end of the movable rod 31, a third return spring 312 is arranged on the sixth connecting rod 311, and a transmission belt 32 for transmitting the movable rod 31 and the rotating wheel 33 is further arranged in the third movable cavity; when the connecting pipe drives the wheel disc to rotate, the movable rod is under the action of centrifugal force, the movable rod moves towards the top of the third movable cavity, the movable rod drives the driving belt to rotate when moving, the driving belt drives the rotating wheel to rotate, the third push plate rotates out of the third movable cavity along with the rotation of the rotating wheel, the sectional area of one side of the fan blade is increased under the action of the third push plate, so that the resistance of one side of the fan blade is increased, the fan blade rotates under the action of wind resistance, the fan blade rotates to an inclined state, so that the impeller enters a working state, normal wind power can be generated when the impeller rotates, and the working effect of the impeller is ensured; when the motor stops driving the connecting pipe to rotate, centrifugal force on the impeller is not enough to push the movable rod to move, the third reset spring pushes the movable rod to move back, the rotating wheel drives the third push plate to rotate into the third movable cavity, the second reset spring pushes the second bump to reset, and the fan blades rotate to be perpendicular to the scraper blades so as to clean the bottom surfaces of the fan blades by using the scraper blades.

A third connecting groove matched with the second connecting rod is arranged on the fan blade, second through cavities are respectively arranged on two sides of the third connecting groove, a second fixed block 351 is arranged in each second through cavity, a fourth movable cavity and a fifth movable cavity are arranged on the inner wall of each second through cavity, the second fixed block is arranged in each fourth movable cavity, a fifth reset spring 352 is arranged on each second fixed block, and one end of each fifth reset spring is fixedly connected to the inner wall of each fourth movable cavity; a first transmission rod 35 is further arranged on the second fixed block, a second push rod 34 penetrates through the second through cavity, a second transmission rod 341 is arranged on the second push rod, and a third transmission wheel 36 for transmitting the second transmission rod and the first transmission rod is arranged on the inner wall of the fifth movable cavity; a second groove 37 is arranged on the side wall of the second through cavity; one end of the second transmission rod is provided with a sixth return spring; the top of the second connecting rod is provided with threads, the second fixed block is provided with a plurality of convex teeth, the second connecting rod is provided with a plurality of third grooves matched with the convex teeth, and the third grooves are arranged below the threads; when the second connecting rod is connected to the fan blades, the second connecting rod is inserted into the third connecting groove, the second push rod is pushed into the second through cavity at the moment, the second push rod drives the second transmission rod to move when moving into the second through cavity, the second transmission rod drives the first transmission rod to move under the action of the third transmission wheel, the second fixed block moves into the fourth movable cavity, the second connecting rod is rotated, the second connecting rod is fixed in the third connecting groove under the thread fit, the second push rod is released, the sixth reset spring pushes the second push rod to move towards the outer side of the second through cavity, the fifth reset spring pushes the second fixed block to move towards the second connecting rod, the convex teeth are embedded into the third groove, under the mutual matching of the convex teeth and the third grooves, a fixing effect is provided for the second connecting rod, the second connecting rod cannot rotate, and the connecting effect of the second connecting rod and the fan blades is improved; through the fan blade being connected with dismantling of second connecting rod, can advance the preparation to the fan blade alone to the hollow structure who makes the fan blade changes and generates, reduces the processing degree of difficulty of fan blade, improves product competitiveness.