CN214146428U - Transmission device of secondary filter screen - Google Patents

Abstract

The utility model discloses a transmission device of a secondary filter screen, which comprises a driving motor speed reducing mechanism, a sewage bucket main shaft mechanism and a sewage bucket component; the output end of the driving motor speed reducing mechanism is matched with the input end of the sewage disposal bucket main shaft mechanism, and the output end of the sewage disposal bucket main shaft mechanism is matched with the sewage disposal bucket assembly; the driving motor speed reducing mechanism comprises a motor speed reducing assembly, a driving gear is arranged at the output end of the motor speed reducing assembly, the sewage bucket spindle mechanism comprises a rotating spindle assembly, a spindle driven wheel is arranged at the input end of the rotating spindle assembly, and the driving gear is matched with the spindle driven wheel. The utility model discloses can solve current secondary filter screen transmission and make the cracked problem of precision low, the assembly degree of difficulty is big and antifriction bearing easily wears out.

Description

Transmission device of secondary filter screen

Technical Field

The utility model relates to a drive mode, concretely relates to transmission of secondary filter screen.

Background

The secondary filter screen system is designed and developed for purifying dirt in water, keeping a water chamber of the condenser in a clean state frequently, ensuring normal operation of rubber balls and improving the recovery rate of the rubber balls. In secondary strainer systems, the drive train plays a crucial role.

The secondary filter screen transmission system in the existing market mainly adopts the rotation type of the fixed blowdown bucket of the net core, and the specific implementation mainly comprises the following two types:

as shown in fig. 1, the first secondary filter screen transmission system mainly includes a motor reduction mechanism 1, an input shaft 2, a small bevel gear 3, a large bevel gear 4, and a main shaft 5. The motor reducing mechanism 1 drives the input shaft 2 to drive the small bevel gear 3, the small bevel gear 3 and the large bevel gear 4 are in meshed transmission to drive the main shaft 5 to rotate, and then the sewage discharge hopper is driven to rotate.

As shown in fig. 2, the second secondary filter screen transmission system mainly includes a motor speed reduction mechanism 1, a universal joint 6, an input shaft 2, a bevel gear reducer 7, a ball bearing 8, a main shaft 5, and a needle bearing 9. The motor reducing mechanism 1 drives the input shaft 2 to rotate through the universal joint 6, power is transmitted to the main shaft 5 through the bevel gear reducer 7, the main shaft 5 is driven to rotate, and therefore the sewage discharging hopper is driven to rotate.

The above two prior arts have the following problems in the implementation process:

(1) and the manufacturing accuracy is low. When the bevel gear speed reducer is adopted, the bearing hole in the shaft seat at the end part of the input shaft and the bearing hole in the shaft seat at the end part of the gear box are coaxial, and the manufacturing precision of the bearing holes at the two ends of the input shaft is difficult to ensure due to large welding deformation;

(2) and the assembly difficulty is high. The single input shaft is driven by the bevel gear speed reducer, the meshing transmission precision of the bevel gears needs to be ensured, the abrasion of the gears in the working process is reduced, the service life of the gears is prolonged, a special lifting appliance needs to be applied for repeated adjustment, the requirement and the difficulty of assembly precision are high, and meanwhile, the overhaul and maintenance cost is increased;

(3) and the rolling bearing is easy to wear and break, and the operation of the secondary filter screen is seriously influenced. The main shaft bearing adopts a ball bearing and a needle bearing as supports, the axial bearing capacity of the two bearings is weak, when the secondary filter screen is obliquely installed due to field arrangement conditions, the axial force required to be born by the bearings is increased, the situation of bearing fragmentation is easy to occur, and the operation of the secondary filter screen is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transmission of secondary filter screen to current secondary filter screen transmission that proposes in solving above-mentioned background art makes the cracked problem of precision low, the assembly degree of difficulty is big and antifriction bearing easily wears and teares.

In order to achieve the above object, the utility model provides a following technical scheme: a transmission device of a secondary filter screen comprises a driving motor speed reducing mechanism, a sewage discharge hopper main shaft mechanism and a sewage discharge hopper assembly;

the output end of the driving motor speed reducing mechanism is matched with the input end gear of the sewage disposal bucket main shaft mechanism, and the output end of the sewage disposal bucket main shaft mechanism is connected with the sewage disposal bucket assembly;

the driving motor speed reducing mechanism comprises a motor speed reducing assembly, a driving gear is arranged at the output end of the motor speed reducing assembly, the sewage bucket spindle mechanism comprises a rotating spindle assembly, a spindle driven wheel is arranged at the input end of the rotating spindle assembly, and the driving gear is matched with the spindle driven wheel.

Preferably, the motor speed reduction assembly comprises a motor, the output end of the motor is matched with a speed reduction mechanism, the output end of the speed reduction mechanism is provided with a small gear box, and the speed reduction mechanism is matched with a gear in the small gear box.

Preferably, the rotating main shaft assembly comprises a main shaft assembly, a main shaft driven wheel rotating shaft, a first plane bearing, a second plane bearing and a sewage discharge bucket main shaft are sequentially arranged on the main shaft assembly, the main shaft driven wheel is matched with the main shaft driven wheel rotating shaft, and the sewage discharge bucket assembly is matched with the sewage discharge bucket main shaft.

Preferably, the periphery of blowdown fill spindle mechanism is provided with the secondary filter screen barrel, the position that the secondary filter screen barrel is relative with driving motor reduction gears is provided with reduction gears cooperation seat, driving motor reduction gears is fixed in on the reduction gears cooperation seat through stud.

Preferably, a shaft sleeve seat is arranged on one side of the first plane bearing on the main shaft assembly, a shaft sleeve is fixedly connected onto the shaft sleeve seat, the second plane bearing and the main shaft of the sewage discharge hopper are located in the shaft sleeve, and a plurality of plates are arranged on the outer wall of the shaft sleeve.

Preferably, the inner wall of secondary filter screen barrel still is provided with ring gear wheel components, ring gear wheel components includes the gyro wheel seat, install the gyro wheel on the gyro wheel seat, the gyro wheel cooperatees with the side that the main shaft was followed the driving wheel, ring gear wheel components installs the one side that deviates from the net core at secondary filter screen barrel.

Preferably, the blowdown fill subassembly includes the hollow shaft, one side fixedly connected with blowdown fill body of hollow shaft, one side fixedly connected with balancing weight that the hollow shaft is relative with the blowdown fill body, the balancing weight is used for balancing the weight that the blowdown was fought, avoids the long-time operation of blowdown fill to lead to blow off pipe deformation scheduling problem, guarantees the stationarity that the blowdown fill body moved, both sides all are provided with the curb plate around the blowdown fill body, and the tip of two curb plates is provided with the end plate, and the bottom of two curb plates is provided with the bottom plate, and the one end that two curb plates are relative with the hollow shaft is provided with the side flange, equal fixedly connected with counterpoint board on every curb plate, and the outside of two curb plates all is provided with supporting roller mechanism, the upper end of hollow shaft is provided with the net core hollow shaft, the periphery of net core hollow shaft is provided with secondary filter screen net core.

Preferably, the blowdown bucket body is fan-shaped, and the opening of blowdown bucket body and net core box are equal in size, the shape is unanimous.

Preferably, the secondary filter screen core is provided with an annular guide rail, and the support roller mechanism is consistent with the annular guide rail on the secondary filter screen core at the radial position of the secondary filter screen.

Preferably, secondary filter screen net core includes the center tube, the periphery of center tube evenly is connected with a plurality of box baffles, the other end of box baffle is connected with the outer loop, is provided with the arc strengthening rib between two adjacent box baffles, the junction welding of box baffle and outer loop has a plurality of connecting plates, be provided with the net core in the outer loop, the net core is divided into a plurality of boxes along the circumferencial direction by box baffle equidistance, and every box independently forms back flush blowdown filter chamber each other, is equipped with fan-shaped otter board in every back flush blowdown filter chamber, fan-shaped otter board is fixed in between two adjacent box baffles, the one end parcel that the connecting plate was kept away from to the outer loop has the rubber banding.

Compared with the prior art, the utility model provides a transmission of secondary filter screen possesses following beneficial effect:

1. a transmission device of a secondary filter screen adopts a main shaft driven wheel for transmission, and compared with bevel gear transmission adopted in the prior art, the transmission device greatly simplifies a motor speed reducing mechanism and an input shaft system, thereby reducing the fault points of the whole machine, increasing the reliability of equipment, simplifying the installation process and facilitating adjustment and maintenance;

2. a transmission device of a secondary filter screen adopts pin tooth transmission, the pin tooth transmission is suitable for application occasions with large centers and large transmission ratios, the manufacturing difficulty is simple, the cost is low, and the disassembly and the repair are convenient;

3. a transmission device of a secondary filter screen adopts a plane bearing, and the bearing has the characteristics of corrosion resistance, wear resistance, simple installation and the like, and can further improve the reliability of a transmission system of the secondary filter screen;

4. a transmission device of a secondary filter screen is characterized in that a rotating shaft of a driven wheel of a main shaft and a main shaft of a sewage discharge hopper are designed in a sectional mode, so that the installation process is simplified, and the maintenance of equipment parts is facilitated;

5. the utility model provides a transmission of secondary filter screen, is provided with ring gear wheel components, can support the effect to main shaft driven wheel when deformation is forced to great water pressure, prevents that the main shaft from too big secondary filter screen transmission system jam or card death that arouses from driving wheel axial displacement, influence equipment operation.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

FIG. 1 is a schematic diagram of a conventional secondary strainer transmission system;

FIG. 2 is a schematic diagram of another conventional secondary strainer transmission system;

fig. 3 is a schematic structural view of a transmission device of a secondary filter screen according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic structural diagram of another embodiment of FIG. 3;

FIG. 6 is an enlarged view of the portion B of FIG. 5;

FIG. 7 is a schematic mechanical view of the entire waste bin assembly of FIG. 5;

FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

FIG. 10 is a schematic view of the secondary strainer core of FIG. 7;

FIG. 11 is another perspective view of the whole of FIG. 10;

FIG. 12 is a schematic view from another perspective of the whole of FIG. 10;

FIG. 13 is an enlarged view of a portion a of FIG. 10;

FIG. 14 is an enlarged view of portion b of FIG. 10;

FIG. 15 is a cross-sectional view D-D of FIG. 13;

in the figure: a motor reduction mechanism 1; an input shaft 2; a bevel pinion 3; a large bevel gear 4; a main shaft 5; a universal joint 6; a bevel gear reducer 7; a ball bearing 8; a needle bearing 9;

the drive motor reduction mechanism 100; a motor reduction assembly 101; a motor 101.1; a speed reduction mechanism 101.2; pinion housing 101.3; a drive gear 102; a main shaft mechanism 200 of the sewage bucket; a rotating spindle assembly 201; a main shaft assembly 201.1; a main shaft driven wheel revolving shaft 201.2; a first planar bearing 201.3; a second planar bearing 201.4; a main shaft 201.5 of the sewage disposal bucket; a shaft sleeve seat 201.6; a sleeve 201.7; a plate 201.8; a main shaft driven wheel 202; a secondary strainer cylinder 203; the reducing mechanism is matched with the seat 203.1; a check ring 203.2; the gear ring and roller assembly 203.3; a roller seat 203.4; a roller 203.5; a connecting seat 203.6; a drain hopper assembly 300;

a center tube 900; a division partition 901; an outer ring 902; an arc-shaped reinforcing rib 903; a connecting plate 904; a mesh core 905; a fan-shaped screen 906; a rubber strip 907;

a hollow shaft 1000; a drain hopper body 1001; a counterweight block 1002; a side plate 1003; a registration plate 1004; a support roller mechanism 1005; a mesh core hollow shaft 1006; a secondary strainer core 1007; an endless guide rail 1007.1; an end plate 1010; a base plate 1011; side flanges 1012; an upper flange 1013; an upper connecting plate 1014; a lower flange 1015; a seal seat 1016; a bucket body reinforcing rib 1017; a weighted stiffener 1018.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 3-15, the present invention provides a technical solution: a transmission device of a secondary filter screen comprises a driving motor speed reducing mechanism 100, a sewage bucket main shaft mechanism 200 and a sewage bucket assembly 300;

the output end of the driving motor speed reducing mechanism 100 is matched with the input end gear of the sewage bucket main shaft mechanism 200, and the output end of the sewage bucket main shaft mechanism 200 is connected with the sewage bucket assembly 300;

the driving motor speed reducing mechanism 100 comprises a motor speed reducing assembly 101, a driving gear 102 is arranged at the output end of the motor speed reducing assembly 101, the sewage bucket spindle mechanism 200 comprises a rotating spindle assembly 201, a spindle driven wheel 202 is arranged at the input end of the rotating spindle assembly 201, and the driving gear 102 is matched with the spindle driven wheel 202;

the motor speed reducing assembly 101 comprises a motor 101.1, the output end of the motor 101.1 is matched with a speed reducing mechanism 101.2, the output end of the speed reducing mechanism 101.2 is provided with a pinion box 101.3, and the speed reducing mechanism 101.2 is matched with a gear in the pinion box 101.3;

the rotating main shaft assembly 201 comprises a main shaft assembly 201.1, a main shaft driven wheel rotating shaft 201.2, a first plane bearing 201.3, a second plane bearing 201.4 and a sewage disposal bucket main shaft 201.5 are sequentially arranged on the main shaft assembly 201.1, the main shaft driven wheel 202 is matched with the main shaft driven wheel rotating shaft 201.2, and the sewage disposal bucket assembly 300 is matched with the sewage disposal bucket main shaft 201.5;

a secondary filter screen cylinder 203 is arranged on the periphery of the sewage bucket spindle mechanism 200, a speed reducing mechanism matching seat 203.1 is arranged at a position of the secondary filter screen cylinder 203 opposite to the driving motor speed reducing mechanism 100, and the driving motor speed reducing mechanism 100 is fixed on the speed reducing mechanism matching seat 203.1 through a stud;

a shaft sleeve seat 201.6 is arranged on one side of a first plane bearing 201.3 on the main shaft assembly 201.1, a shaft sleeve 201.7 is fixedly connected on the shaft sleeve seat 201.6, the second plane bearing 201.4 and a main shaft 201.5 of the sewage bucket are positioned in a shaft sleeve 201.7, and a plurality of plates 201.8 are arranged on the outer wall of the shaft sleeve 201.7;

a check ring 203.2 is arranged on the inner wall of the secondary filter screen cylinder 203, and one side of the check ring 203.2 is matched with the plate 201.8;

the inner wall of the secondary filter screen cylinder 203 is also provided with a gear ring roller assembly 203.3, the gear ring roller assembly 203.3 comprises a roller seat 203.4, a roller 203.5 is arranged on the roller seat 203.4, and the roller 203.5 is matched with the side surface of the main shaft driven wheel 202;

the gear ring roller assembly 203.3 is arranged on one side of the secondary filter screen cylinder 203, which is far away from the screen core, when the main shaft driven wheel 202 deforms towards the downstream side under the water pressure, the gear ring roller assembly 203.3 can provide support for the main shaft driven wheel 202 and limit the axial displacement of the main shaft driven wheel 202, and the phenomenon that a transmission system is jammed or even deadly due to the fact that the main shaft driven wheel 202 deforms too much is prevented, and the normal operation of the secondary filter screen is finally influenced;

the outer wall of the secondary filter screen cylinder 203 is provided with a connecting seat 203.6;

the main shaft driven wheel 202 is mounted on the main shaft driven wheel rotating shaft 201.2 through key connection, one end of the main shaft driven wheel rotating shaft 201.2 is provided with a shaft hole, one end of the main shaft 201.5 of the pollution discharge hopper is connected with the shaft hole on the main shaft driven wheel rotating shaft 201.2 through key matching, and the other end of the main shaft 201.5 of the pollution discharge hopper is connected with the pollution discharge hopper through a stud;

the driving gear 102 is arranged in the pinion box 101.3;

the dirt discharging hopper assembly 300 comprises a hollow shaft 1000, a dirt discharging hopper body 1001 is fixedly connected to one side of the hollow shaft 1000, one side of the hollow shaft 1000 opposite to the sewage bucket body 1001 is fixedly connected with a balancing weight 1002, the balancing weight 1002 is used for balancing the weight of the sewage bucket, the problems of deformation of a sewage pipe and the like caused by long-time operation of the sewage bucket are avoided, the operation stability of the sewage bucket body 1001 is ensured, the front side and the rear side of the sewage bucket body 1001 are both provided with side plates 1003, the end parts of the two side plates 1003 are provided with end plates 1010, the bottoms of the two side plates 1003 are provided with bottom plates 1011, one ends of the two side plates 1003 opposite to the hollow shaft 1000 are provided with side flanges 1012, each side plate 1003 is fixedly connected with a counterpoint plate 1004, the outer sides of the two side plates 1003 are both provided with supporting roller mechanisms 1005, a net core hollow shaft 1006 is arranged at the upper end of the hollow shaft 1000, and a secondary filter screen core 1007 is arranged on the periphery of the net core hollow shaft 1006;

the sewage bucket body 1001 is fan-shaped, and the opening of the sewage bucket body 1001 is equal to the mesh core grid in size and consistent in shape;

an annular guide rail 1007.1 is arranged on the secondary filter screen core 1007, and the radial position of the supporting roller mechanism 1005 on the secondary filter screen is consistent with the annular guide rail 1007.1 on the secondary filter screen core 1007;

the side plate 1003 and the end plate 1010 are connected through welding, the side plate 1003 and the bottom plate 1011 are connected through welding, and the side plate 1003 and the side flange 1012 are connected through welding;

an upper flange 1013 is arranged at the top of the hollow shaft 1000, an upper connecting plate 1014 is arranged between the upper flange 1013 and the side plate 1003, and the upper connecting plate 1014 is connected with the upper flange 1013 through a bolt; the bottom of the hollow shaft 1000 is matched with a lower flange 1015, the other side of the lower flange 1015 is matched with a sealing seat 1016, and two V-shaped water seals are arranged between the lower flange 1015 and the sealing seat 1016 for sealing;

a bucket body reinforcing rib 1017 is arranged on the periphery of the side plate 1003;

a counterweight reinforcing rib 1018 is arranged between the counterweight block 1002 and the hollow shaft 1000, and the counterweight reinforcing rib 1018 is used for increasing the overall structural strength of the sewage disposal bucket body 1001 and maintaining the stability of the counterweight block 1002 when rotating along with the sewage disposal bucket body 1001;

the secondary filter screen core 1007 comprises a central pipe 900, a plurality of division partition plates 901 are uniformly connected to the periphery of the central pipe 900, the other ends of the division partition plates 901 are connected with an outer ring 902, an arc-shaped reinforcing rib 903 is arranged between two adjacent division partition plates 901, a plurality of connecting plates 904 are welded at the joints of the division partition plates 901 and the outer ring 902, a screen core 905 is arranged in the outer ring 902, the screen core 905 is equally divided into a plurality of divisions by the division partition plates 901 along the circumferential direction, each division is mutually independent to form a back-washing pollution discharge filter cavity, a fan-shaped screen plate 906 is assembled in each back-washing pollution discharge filter cavity, the fan-shaped screen plate 906 is fixed between two adjacent division partition plates 901, and a rubber strip 907 is wrapped at one end of the outer ring 902, which is far away from the connecting plates 904;

two ends of the dividing partition 901 are respectively welded with the central pipe 900 and the outer ring 902;

two ends of the arc-shaped reinforcing rib 903 are respectively welded with the two adjacent grid partition boards 901;

bolt holes are formed in two sides of the fan-shaped screen 906, and the fan-shaped screen 906 is connected with the two adjacent grid partition plates 901 through bolts;

the fan-shaped screen plate 906 is of an arc-shaped structure, and the arc-shaped surface of the fan-shaped screen plate 906 is matched with the arc-shaped inner hole of the arc-shaped reinforcing rib 903, so that the deformation of the fan-shaped screen plate 906 under the impact of water flow is reduced;

the overall structure of the alignment plate 1004 is L-shaped, the alignment plate 1004 comprises a vertical section and a horizontal section, a waist circular hole is formed in the vertical section of the alignment plate 1004, a bolt penetrates through the waist circular hole to be connected with a side plate 1003 on the sewage bucket body 1001, the outer side of the horizontal section of the alignment plate 1004 is connected with a division partition 901, the rubber strip 907 is wrapped at the end part of the division partition 901, a gap exists between the rubber strip 907 and the division partition 901, and the gap between the rubber strip 907 and the division partition 901 is adjusted according to actual conditions;

example 1

The driving gear 102 is a pin gear, the main shaft driven gear 202 is a pin wheel, and the pin gear transmits power to the pin wheel;

example 2

The driving gear 102 is a gear, the main shaft driven gear 202 is a gear ring, and the gear transmits power to the gear ring;

the working principle is as follows:

when the secondary filter screen starts sewage discharge work, the driving motor reducing mechanism 100 drives the driving gear 102 to rotate, the driving gear 102 and the main shaft driven wheel 202 are in mutual matching transmission, the main shaft driven wheel 202 rotates to drive the main shaft driven wheel rotating shaft 201.2 and the sewage discharge bucket main shaft 201.5 to rotate, and the sewage discharge bucket main shaft 201.5 drives the sewage discharge bucket to rotate to perform partition and lattice strengthening backwashing.

The working principle of the secondary filter screen sewage discharge hopper is as follows: when the secondary filter screen discharges sewage, the control device can control the sewage discharge hopper body 1001 to automatically rotate in a stepping manner, the sewage discharge hopper body is sequentially aligned with each grid of the secondary filter screen core 1007, and grid-division reinforced back washing is performed on the screen surface by utilizing the pressure difference of two sides of the filter screen;

the working principle of the secondary filter screen core 1007 is as follows: the net core 905 is arranged in the filter cylinder body through a supporting flange, when cooling water of the condenser/heat exchanger passes through the filter, sundries in the water are blocked by the fan-shaped net plate 906 and adsorbed on a net surface, when the pressure difference between the front and the back of the fan-shaped net plate 906 reaches a set value, the sewage discharge hopper rotates step by step to enable an opening of the sewage discharge hopper to be aligned with each filter cavity of the net core 905, the turbulent flow effect formed by special filter cavities and an effective pressure head formed by the differential pressure of the cooling water inlet and outlet pipelines of the condenser/heat exchanger are fully utilized, various large sundries in the cooling water are removed, the one-by-one fixed-grid reinforced backwashing of the filter cavities of the net core 905 is realized, and the clean operation of the surface of the fan-shaped net plate 906 is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a transmission of secondary filter screen which characterized in that: the device comprises a driving motor speed reducing mechanism (100), a sewage disposal bucket spindle mechanism (200) and a sewage disposal bucket assembly (300);

the output end of the driving motor speed reducing mechanism (100) is matched with the input end gear of the sewage discharging hopper main shaft mechanism (200), and the output end of the sewage discharging hopper main shaft mechanism (200) is connected with the sewage discharging hopper assembly (300);

the driving motor reducing mechanism (100) comprises a motor reducing assembly (101), a driving gear (102) is arranged at the output end of the motor reducing assembly (101), the sewage bucket spindle mechanism (200) comprises a rotating spindle assembly (201), a spindle driven wheel (202) is arranged at the input end of the rotating spindle assembly (201), and the driving gear (102) is matched with the spindle driven wheel (202).

2. The transmission of a secondary screen according to claim 1, wherein: motor reduction unit (101) includes motor (101.1), the output cooperation of motor (101.1) has reduction gears (101.2), the output of reduction gears (101.2) is provided with pinion box (101.3), gear in reduction gears (101.2) and pinion box (101.3) cooperatees.

3. The transmission of a secondary screen according to claim 1, wherein: the rotating main shaft assembly (201) comprises a main shaft assembly (201.1), a main shaft driven wheel rotating shaft (201.2), a first plane bearing (201.3), a second plane bearing (201.4) and a sewage discharge bucket main shaft (201.5) are sequentially arranged on the main shaft assembly (201.1), the main shaft driven wheel (202) is matched with the main shaft driven wheel rotating shaft (201.2), and the sewage discharge bucket assembly (300) is matched with the sewage discharge bucket main shaft (201.5).

4. The transmission of a secondary screen according to claim 1, wherein: the periphery of blowdown fill spindle mechanism (200) is provided with secondary filter screen barrel (203), the position that secondary filter screen barrel (203) and driving motor reduction gears (100) are relative is provided with reduction gears cooperation seat (203.1), driving motor reduction gears (100) are fixed in on reduction gears cooperation seat (203.1) through stud.

5. A drive for a secondary screen according to claim 3, wherein: a shaft sleeve seat (201.6) is arranged on one side of a first plane bearing (201.3) on the main shaft assembly (201.1), a shaft sleeve (201.7) is fixedly connected to the shaft sleeve seat (201.6), the second plane bearing (201.4) and the sewage bucket main shaft (201.5) are located in the shaft sleeve (201.7), and a plurality of plates (201.8) are arranged on the outer wall of the shaft sleeve (201.7).

6. The transmission of a secondary screen according to claim 4, wherein: the inner wall of secondary filter screen barrel (203) still is provided with ring gear wheel components (203.3), ring gear wheel components (203.3) are including gyro wheel seat (203.4), install gyro wheel (203.5) on gyro wheel seat (203.4), gyro wheel (203.5) cooperate with the side that the main shaft was followed driving wheel (202), one side that deviates from the net core at secondary filter screen barrel (203) is installed in ring gear wheel components (203.3).

7. The transmission of a secondary screen according to claim 1, wherein: the blow-off bucket assembly (300) comprises a hollow shaft (1000), one side of the hollow shaft (1000) is fixedly connected with a blow-off bucket body (1001), one side of the hollow shaft (1000) opposite to the blow-off bucket body (1001) is fixedly connected with a balancing weight (1002), the balancing weight (1002) is used for balancing the weight of the blow-off bucket, the problems that a blow-off pipe is deformed and the like due to long-time operation of the blow-off bucket are avoided, the operation stability of the blow-off bucket body (1001) is ensured, side plates (1003) are arranged on the front side and the rear side of the blow-off bucket body (1001), end plates (1010) are arranged at the end parts of the two side plates (1003), a bottom plate (1011) is arranged at the bottom parts of the two side plates (1003), a side flange (1012) is arranged at one end of the two side plates (1003) opposite to the hollow shaft (1000), an alignment plate (1004) is fixedly connected with each side plate (1003), and a support roller mechanism (1005) is arranged on the outer side of the two side plates (1003), the upper end of the hollow shaft (1000) is provided with a net core hollow shaft (1006), and the periphery of the net core hollow shaft (1006) is provided with a secondary filter screen core (1007).

8. The transmission of a secondary screen according to claim 7, wherein: the blowdown bucket body (1001) is fan-shaped, and the opening of the blowdown bucket body (1001) is equal to the mesh core grid in size and consistent in shape.

9. The transmission of a secondary screen according to claim 7, wherein: and an annular guide rail (1007.1) is arranged on the secondary filter screen core (1007), and the radial position of the support roller mechanism (1005) on the secondary filter screen is consistent with the annular guide rail (1007.1) on the secondary filter screen core (1007).

10. The transmission of a secondary screen according to claim 7, wherein: the secondary filter screen core (1007) comprises a central pipe (900), the periphery of the central pipe (900) is uniformly connected with a plurality of grid clapboards (901), the other end of each grid partition plate (901) is connected with an outer ring (902), an arc-shaped reinforcing rib (903) is arranged between every two adjacent grid partition plates (901), a plurality of connecting plates (904) are welded at the joint of the grid partition plate (901) and the outer ring (902), a mesh core (905) is arranged in the outer ring (902), the mesh core (905) is equally divided into a plurality of cells by a cell partition plate (901) along the circumferential direction, each cell is mutually independent to form a back washing pollution discharge filter cavity, a fan-shaped screen plate (906) is assembled in each back washing pollution discharge filter cavity, the fan-shaped screen plate (906) is fixed between two adjacent grid partition plates (901), one end of the outer ring (902) far away from the connecting plate (904) is wrapped with a rubber strip (907).

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