CN216951068U - Air blower long-life servo valve with bypass system - Google Patents

Abstract

The utility model relates to the technical field of stable blower servo valves, in particular to a long-life blower servo valve with a bypass system, which comprises a coarse filtering component and a fine filtering component, wherein the coarse filtering component comprises a coarse filtering cylinder and a roller, an oil injection port and an oil collection bin are respectively arranged above and below the coarse filtering cylinder, an oil outlet is arranged on the oil collection bin, a plurality of separation holes are formed in the roller, the fine filtering component comprises a shell and a filtering mechanism, an oil inlet, an oil discharge port and a bypass port are formed in the shell, the filtering mechanism comprises a filtering shell and a detachable filter element arranged in the filtering shell, and a first leakage hole communicated with the oil discharge port is formed in the filtering shell. Thereby saving manpower and protecting the servo valve to greatly prolong the service life in use.

Description

Air blower long-life servo valve with bypass system

Technical Field

The utility model relates to the technical field of stable blower servo valves, in particular to a long-service-life blower servo valve with a bypass system.

Background

The blast furnace air blower is the important equipment of stable production of blast furnace, the servovalve is the essential device in the air blower operation, there is strict requirement to the grease under the condition of air blower continuity of operation, if the grease receives the pollution, thereby can lead to the servovalve card to pause will the uncontrollable amount of wind, and then lead to the blast furnace to subtract the output, because the cleanliness of grease can not be observed, can only detect with equipment whether qualified, in order to guarantee the grease cleanliness, pass through special messenger's field inspection every day, consume a large amount of manpowers, and efficiency is lower, so it is necessary to provide an air blower high life servovalve with bypass system and solve foretell problem.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a long-life servo valve for a blower with a bypass system.

In order to solve the problems of the prior art, the utility model adopts the technical scheme that: the utility model provides an air-blower high life servovalve with bypass system, includes the colating subassembly and strains the subassembly carefully, the colating subassembly includes that the thick section of thick bamboo and the coaxial cylinder that sets up in the thick section of thick bamboo that strains, the top and the below of straining the thick section of thick bamboo are equipped with an oiling mouth and a collection oil storehouse respectively, be equipped with an oil-out on the collection oil storehouse, the cylinder is located oiling mouth and gathers between the oil storehouse to can rotate in the colating section of thick bamboo, be equipped with a plurality of separation holes that are used for separating fluid and fatlute on the cylinder, the fine section of thick bamboo is located the side of colating subassembly, the fine section of thick bamboo of straining includes the shell and sets up the interior filter mechanism of shell, be equipped with oil inlet, oil drain port and bypass mouth on the shell, the oil inlet is linked together with the oil-out, filter mechanism locates in the shell through the bypass mouth, filter mechanism includes strain the shell and the filter core that detachable locates in straining the shell, and strain the one end and the oil inlet of shell and be linked together, the filter shell is provided with a leak hole communicated with the oil discharge port, and the filter element is used for further filtering oil flowing out of the oil collecting bin and discharging the oil from the oil discharge port through the filter shell.

Further, thick section of thick bamboo and gathering the oil bin and be the cylinder casing together, the two is vertical state setting, and the upper end of thick section of thick bamboo is open structure, and the lower extreme is enclosed construction to seted up a plurality of oil leak mouth, the structural fixed installation lid that is equipped with of opening of coarse filter section of thick bamboo upper end, the opening that covers in coarse filter section of thick bamboo upper end completely of installation lid, the top of installation lid is seted up to the oiling mouth, gathers the coaxial fixed lower extreme of straining the section of thick bamboo of locating of oil bin, and the upper end of gathering the oil bin is open structure to just facing a plurality of oil leak mouth, the oil-out is seted up on gathering the outer wall of oil bin, and the below of gathering the oil bin is equipped with a bearing seat that is the horizontality, gather the fixed top of locating a bearing seat of oil bin.

Further, a vertical upward cylindrical boss is coaxially formed at the bottom of the coarse filter cylinder, a cylindrical caulking groove is coaxially formed at the top of the cylindrical boss, a bearing is embedded in the cylindrical caulking groove, the roller is a cylindrical shell and is coaxially arranged in the coarse filter cylinder, a plurality of separation holes are uniformly formed in the peripheral wall of the roller along the circumferential direction of the roller, a rotating column is coaxially and fixedly arranged at the bottom of the roller and is coaxially inserted in the bearing, a plurality of oil leakage ports are uniformly distributed around the cylindrical boss along the circumferential direction of the cylindrical boss, a rotating shaft is coaxially and fixedly arranged on the roller, the upper end of the rotating shaft is in shaft connection with the mounting cover, the lower end of the rotating shaft vertically and downwardly sequentially penetrates through the rotating column, the cylindrical boss and the oil collecting bin and extends to the first bearing seat, the inside of the first bearing seat is hollow and is fixedly provided with a driving motor in a vertical state, the lower extreme of pivot passes the top of a bearing seat and links firmly with driving motor's output shaft is coaxial.

Furthermore, one side of a bearing seat is fixedly provided with a second bearing seat in a horizontal state, the outer shell is rectangular and is fixedly arranged at the top of the second bearing seat, the oil inlet is arranged at one side, close to the oil outlet, of the outer shell, the oil inlet is communicated with the oil outlet through an external oil pipe, the bypass port is arranged at the opposite side, provided with the oil inlet, of the outer shell, a cylindrical accommodating groove is inwards formed in the outer shell along the level of the bypass port, a through hole communicated with the oil inlet is coaxially formed in the groove bottom of the cylindrical accommodating groove, the oil outlet is arranged at one side, close to the bypass port, of the outer shell and is communicated with the cylindrical accommodating groove, and the filtering mechanism is arranged in the cylindrical accommodating groove.

Further, it is cylindrical shell to strain the shell to be in the cylindricality holding tank is located to the horizontality, strain the both ends of shell and be open structure, strain the shell inward one end and the tank bottom of cylindricality holding tank offsets tightly to open structure and through-hole on it are linked together, strain the shell outward one end and link firmly mutually with the lateral wall of shell, and its open structure goes up detachable and is equipped with a side cap, the filter core includes cylindricality outer sleeve and cylindricality inner core section of thick bamboo, and the cylindricality outer sleeve is horizontal state and locates in straining the shell to the both ends of cylindricality outer sleeve are open structure, the cylindricality inner core section of thick bamboo is horizontal state and locates in the cylindricality outer sleeve, and the one end that the cylindricality inner core section of thick bamboo is close to the through-hole is enclosed construction to a plurality of sieve mesh has been seted up, and the other end of cylindricality inner core section of thick bamboo is open structure and coaxial detachable sets up a circular fretwork apron, the cylindricality inner core section of thick bamboo is equipped with one of circular fretwork apron and serves one and takes shape out a plurality of along cylindricality inner core section of evenly distributed's section of thick bamboo circumferencial direction The connecting rod, every the connecting rod all is the horizontality, one of cylindricality outer sleeve is close to the by pass port serves coaxial card and establishes a snap ring, every the connecting rod all extends towards one side and links firmly with the snap ring mutually, be equipped with the filter paper piece that a plurality of links to each other in the cylindricality inner core section of thick bamboo, set up No. two small openings that a and a small opening are linked together on the cylindricality outer sleeve.

Furthermore, insert on the small opening No. two and be equipped with a rubber tube, the one end shaping of rubber tube has the cyclic annular flange of round, and the other end of rubber tube passes small opening No. two, small opening and cylindricality holding tank in proper order to stretch into in the intercommunication department of oil drain port and cylindricality holding tank.

Compared with the prior art, the utility model has the following beneficial effects: compared with the traditional servo valve for the blast furnace, the servo valve adopts two steps of rough filtering and fine filtering to filter oil entering an oil inlet pipeline of the servo valve table of the air blower, so that the use precision of the oil of the servo valve is increased, the stable operation of the servo valve is ensured, the jamming condition is avoided, the manpower is further saved, the service life of the servo valve is greatly prolonged in use, meanwhile, the bypass port arranged on the fine filtering component is used for replacing a filter element, and the problem that the filter element cannot provide effective filtering after being blocked is avoided.

Drawings

FIG. 1 is a schematic perspective view of an embodiment;

FIG. 2 is a top view of the embodiment;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 of the embodiment;

FIG. 4 is an enlarged view of a portion A1 indicated in FIG. 3;

FIG. 5 is an enlarged view of a portion A2 indicated in FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a schematic perspective view of a coarse filter cartridge according to an embodiment;

FIG. 8 is an exploded perspective view of the fine filter assembly of the embodiment;

FIG. 9 is an exploded perspective view of a filter mechanism according to an embodiment;

fig. 10 is an exploded perspective view of a filter cartridge according to an embodiment;

FIG. 11 is an exploded perspective view of the cylindrical inner core barrel of the embodiment;

the reference numbers in the figures are: 1-coarse filter cartridge; 2-a roller; 3-an oil filling port; 4-oil gathering bin; 5-oil outlet; 6-a separation well; 7-a housing; 8-an oil inlet; 9-oil drain port; 10-a bypass port; 11-a filter shell; 12-a leak hole; 13-oil leakage port; 14-mounting a cover; 15-a bearing seat; 16-a pedestal boss; 17-a bearing; 18-spin columns; 19-a rotating shaft; 20-a drive motor; 21-bearing seat II; 22-external oil pipe; 23-a cylindrical receiving groove; 24-a via hole; 25-side cover; 26-a cylindrical outer sleeve; 27-a cylindrical inner core barrel; 28-mesh; 29-round hollowed-out cover plate; 30-a connecting rod; 31-a snap ring; 32-filter paper sheets; 33-second leak hole; 34-a rubber tube; 35-annular flange.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 11, a high life servo valve of an air blower with a bypass system comprises a coarse filter component and a fine filter component, wherein the coarse filter component comprises a coarse filter cylinder 1 and a roller 2 coaxially arranged in the coarse filter cylinder 1, an oil inlet 3 and an oil collecting bin 4 are respectively arranged above and below the coarse filter cylinder 1, an oil outlet 5 is arranged on the oil collecting bin 4, the roller 2 is positioned between the oil inlet 3 and the oil collecting bin 4 and can rotate in the coarse filter cylinder 1, a plurality of separation holes 6 for separating oil and oil sludge are arranged on the roller 2, the fine filter component is arranged beside the coarse filter component, the fine filter component comprises a housing 7 and a filter mechanism arranged in the housing 7, an oil inlet 8, an oil outlet 9 and a bypass port 10 are arranged on the housing 7, the oil inlet 8 is communicated with the oil outlet 5, the filter mechanism is arranged in the housing 7 through the bypass port 10, the filtering mechanism comprises a filtering shell 11 and a detachable filter element arranged in the filtering shell 11, one end of the filtering shell 11 is communicated with the oil inlet 8, a first leak hole 12 communicated with the oil outlet 9 is formed in the filtering shell 11, and the filter element is used for further filtering oil flowing out of the oil gathering bin 4 and discharging the oil from the oil outlet 9 through the filtering shell 11.

When oil is injected into the oil injection port 3 above the coarse filter cylinder 1, the oil can enter the coarse filter cylinder 1, so that oil sludge with high specific gravity in the oil can be separated to the inner wall of the roller 2 and blocked by the separation hole 6 through the rotating centrifugal action of the roller 2 in the coarse filter cylinder 1, the oil with low specific gravity enters the oil gathering bin 4 through the separation hole 6 on the roller 2, so that coarse filtration of the oil is completed, then the oil temporarily stored in the oil gathering bin 4 can enter the shell 7 through the oil inlet 8 communicated with the oil outlet 5, further fine filtration is completed through the filter element in the fine filtration assembly, finally the oil flows out from the oil discharge hole through the first leak hole 12, crude oil used by the servo valve of the air blower is filtered to the fine oil through the two steps of coarse filtration air blower and fine filtration, and the servo valve of the air blower can not be stuck due to the use of the polluted oil during operation, ultimately resulting in a blower shutdown in which the bypass port 10 is used for installation and replacement of the filter cartridge.

The coarse filter cartridge 1 and the oil collecting bin 4 are both cylindrical shells and are arranged in a vertical state, the upper end of the coarse filter cartridge 1 is of an open structure, the lower end of the coarse filter cartridge is of a closed structure, a plurality of oil leakage openings 13 are formed in the upper end of the coarse filter cartridge 1, an installation cover 14 is fixedly arranged on the open structure of the upper end of the coarse filter cartridge 1, the installation cover 14 completely covers an opening in the upper end of the coarse filter cartridge 1, the oil injection opening 3 is formed in the top of the installation cover 14, the oil collecting bin 4 is coaxially and fixedly arranged at the lower end of the coarse filter cartridge 1, the upper end of the oil collecting bin 4 is of an open structure and faces the oil leakage openings 13, the oil outlet 5 is formed in the outer wall of the oil collecting bin 4, a bearing seat 15 in a horizontal state is arranged below the oil collecting bin 4, and the oil collecting bin 4 is fixedly arranged at the top of the bearing seat 15.

The oil leakage port 13 is used for sealing an opening structure on the coarse filter cylinder 1 when the roller 2 is coarsely filtered, the oil cannot spill out of the coarse filter cylinder 1, and meanwhile, the oil in the coarse filter cylinder 1 cannot be polluted by the outside, the lower end of the mounting cover 14 can form a threaded outer wall, the inner wall of the coarse filter cylinder 1 is matched with the threads at the lower end of the mounting cover 14, so that the mounting cover 14 can be rotatably arranged on the coarse filter cylinder 1, the mounting cover 14 is convenient to be fixed on and detached from the mounting cover 14, a sealing ring for preventing oil leakage can be additionally arranged at the joint of the oil collection chamber 4 and the coarse filter cylinder 1, and the sealing ring is not drawn in the drawing.

A vertical upward cylindrical boss 16 is coaxially formed at the bottom of the coarse filter cylinder 1, a cylindrical caulking groove is coaxially formed at the top of the cylindrical boss 16, a bearing 17 is embedded in the cylindrical caulking groove, the drum 2 is a cylindrical shell and is coaxially arranged in the coarse filter cylinder 1, a plurality of separation holes 6 are uniformly formed in the circumferential wall of the drum 2 along the circumferential direction of the drum 2, a rotary column 18 is coaxially and fixedly arranged at the bottom of the drum 2, the rotary column 18 is coaxially inserted in the bearing 17, a plurality of oil leakage ports 13 are uniformly distributed around the cylindrical boss 16 along the circumferential direction of the cylindrical boss 16, a rotary shaft 19 is coaxially fixed on the drum 2, the upper end of the rotary shaft 19 is in shaft connection with the mounting cover 14, and the lower end of the rotary shaft 19 vertically and downwardly sequentially passes through the rotary column 18, the cylindrical boss 16 and the oil gathering bin 4 and extends towards a bearing seat 15, the inside of a bearing seat 15 is hollow to a fixed driving motor 20 that is vertical state that is equipped with, the lower extreme of pivot 19 passes the top of a bearing seat 15 and links firmly with driving motor 20's output shaft is coaxial.

The output shaft of driving motor 20 passes through the shaft coupling and is connected with the extension end transmission of pivot 19, when driving motor 20 started, can drive pivot 19 at the 1 internal rotation of coarse filter cylinder to the cylinder 2 of linking firmly with the pivot 19 is rotatory thereupon, and then realizes the centrifugal action of cylinder 2, and wherein, the condition that the card pause can not appear when rotatory to pivot 19 and bearing 17's cooperation has guaranteed cylinder 2.

One side of a bearing seat 15 is fixedly provided with a second bearing seat 21 in a horizontal state, the shell 7 is rectangular and is fixedly arranged at the top of the second bearing seat 21, the oil inlet 8 is arranged at one side, close to the oil outlet 5, of the shell 7, the oil inlet 8 is communicated with the oil outlet 5 through an external oil pipe 22, the bypass port 10 is arranged at the opposite side, provided with the oil inlet 8, of the shell 7, the shell 7 is horizontally and inwards provided with a cylindrical accommodating groove 23 along the bypass port 10, a through hole 24 communicated with the oil inlet 8 is coaxially arranged at the groove bottom of the cylindrical accommodating groove 23, the oil outlet 9 is arranged at one side, close to the bypass port 10, of the shell 7 and is communicated with the cylindrical accommodating groove 23, and the filtering mechanism is arranged in the cylindrical accommodating groove 23.

No. two bearing seat 21 plays the effect of support, and external oil pipe 22 is used for gathering in the fluid direction inflow shell 7 in the oil storehouse 4, and later fluid filters the mechanism through the through-hole 24 flow direction on the cylindricality holding tank 23, and the final thin filtration of completion, the fluid after the completion thin filtration can flow out shell 7 through oil drain 9 to the servo valve of confession air-blower uses.

The filter shell 11 is a cylindrical shell and is horizontally arranged in the cylindrical accommodating groove 23, two ends of the filter shell 11 are open structures, the inward end of the filter shell 11 is abutted against the groove bottom of the cylindrical accommodating groove 23, the open structure on the filter shell is communicated with the through hole 24, the outward end of the filter shell 11 is fixedly connected with the side wall of the outer shell 7, the open structure is detachably provided with a side cover 25, the filter element comprises a cylindrical outer sleeve 26 and a cylindrical inner core barrel 27, the cylindrical outer sleeve 26 is horizontally arranged in the filter shell 11, two ends of the cylindrical outer sleeve 26 are both open structures, the cylindrical inner core barrel 27 is horizontally arranged in the cylindrical outer sleeve 26, one end of the cylindrical inner core barrel 27 close to the through hole 24 is a closed structure and is provided with a plurality of sieve holes 28, the other end of the cylindrical inner core barrel 27 is an open structure and is coaxially detachably provided with a circular hollow cover plate 29, the cylindricality inner core section of thick bamboo 27 is equipped with one of circular fretwork apron 29 and serves and form a plurality of along the connecting rod 30 of cylindricality inner core section of thick bamboo 27 circumferencial direction evenly distributed, every connecting rod 30 all is the horizontality, the cylindricality outer sleeve 26 is close to one of by pass port 10 and serves coaxial card and establish a snap ring 31, every connecting rod 30 all extends towards one side and links firmly mutually with snap ring 31, be equipped with the filter paper piece 32 that a plurality of links to each other in the cylindricality inner core section of thick bamboo 27, seted up No. two small openings 33 that a and small opening 12 are linked together on the cylindricality outer sleeve 26.

When the oil liquid flows into the outer shell 7, the oil liquid flows into the cylindrical accommodating groove 23 through the through hole 24 and enters the cylindrical inner core cylinder 27 through the sieve holes 28 on the cylindrical inner core cylinder 27, then the oil liquid sequentially passes through the plurality of filter paper pieces 32 and the circular hollow cover plate 29 and finally flows to the second leak hole 33 to finish the fine filtration of the oil liquid, wherein the circular hollow cover plate 29 can be clamped with the cylindrical inner core cylinder 27 in a buckling mode, so that the installation and the disassembly of the circular hollow cover plate 29 are convenient, the cylindrical inner core cylinder 27 can be clamped in the cylindrical outer sleeve 26 through the matching of the plurality of connecting rods 30 and the clamping ring 31, if the cylindrical inner core cylinder 27 is taken out from the cylindrical outer sleeve 26, the clamping ring 31 can be pulled outwards to enable the plurality of connecting rods 30 to drive the cylindrical inner core cylinder 27 to move outwards until the cylindrical outer sleeve 26 is completely separated from the cylindrical inner core cylinder 27, the plurality of filter paper pieces 32 can be limited in the cylindrical inner core cylinder 27 through the circular hollow cover plate 29, and after filter paper piece 32 loses the filter effect, also can take off circular fretwork apron 29 and change filter paper piece 32 in the core section of thick bamboo 27 in to the cylindricality, the one end in the shell 11 is strained towards to side cap 25 can set up a boss, the surface of boss is the screw thread form, make side cap 25 locate on straining the opening of shell 11 through rotatory mode detachable, and the boss can also inwards support tight snap ring 31, prevent droing of snap ring 31, wherein, strain the shell 11 and the tight one end of cylindricality holding tank 23 counterbalance and be equipped with a sealing washer and be used for preventing the spill of fluid, also be equipped with a sealing washer that prevents that fluid from spilling between same side cap 25 and the filter shell 11.

A rubber tube 34 is inserted into the second leak hole 33, a ring-shaped flange 35 is formed at one end of the rubber tube 34, and the other end of the rubber tube 34 sequentially penetrates through the second leak hole 33, the first leak hole 12 and the cylindrical accommodating groove 23 and extends into a communication position of the oil discharge port 9 and the cylindrical accommodating groove 23.

Rubber tube 34 is used for guaranteeing that the fluid that passes through the fine filtration can be accurate from cylindricality outer sleeve 26 flow to oil drain port 9, prevents leaking of fluid, and wherein the cyclic annular flange 35 on the rubber tube 34 plays rubber tube 34's limiting displacement, prevents that rubber tube 34 from filling in completely in the intercommunication department of oil drain port 9 and cylindricality holding tank 23 and leading to not taking out the condition of blockking up the passageway.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. The utility model provides an air-blower high life servovalve with bypass system, its characterized in that includes coarse filtration subassembly and fine filtration subassembly, the coarse filtration subassembly includes that the coarse filtration section of thick bamboo (1) and coaxial setting in the cylinder (2) of thick section of thick bamboo (1), the top and the below of thick section of thick bamboo (1) are equipped with one oiling mouth (3) and one oil gathering storehouse (4) respectively, be equipped with one oil-out (5) on the oil gathering storehouse (4), cylinder (2) are located between oiling mouth (3) and the oil gathering storehouse (4) to can rotate in thick section of thick bamboo (1), be equipped with a plurality of separation hole (6) that are used for separating fluid and fatlute on cylinder (2), the fine filtration subassembly is located coarse filtration subassembly's side, and the fine filtration subassembly includes shell (7) and sets up in shell (7) and filters the mechanism, be equipped with oil inlet (8), oil drain port (9) and bypass port (10) on shell (7), oil inlet (8) are linked together with oil-out (5), filter the mechanism and locate in shell (7) through by-pass port (10), filter the mechanism and locate the filter core in straining shell (11) including straining shell (11) and detachable, the one end of straining shell (11) is linked together with oil inlet (8), strain and be equipped with a small opening (12) that communicate with oil drain port (9) on shell (11), the filter core is used for will gathering from gathering the further filtration of fluid that flows out in oil bin (4) and discharge from oil drain port (9) through straining shell (11).

2. The long-life servo valve of the blower with the bypass system is characterized in that the coarse filter cylinder (1) and the oil collecting bin (4) are both cylindrical shells and are arranged in a vertical state, the upper end of the coarse filter cylinder (1) is of an open structure, the lower end of the coarse filter cylinder is of a closed structure and is provided with a plurality of oil leakage ports (13), an installation cover (14) is fixedly arranged on the open structure of the upper end of the coarse filter cylinder (1), the installation cover (14) completely covers an opening in the upper end of the coarse filter cylinder (1), the oil filling port (3) is arranged at the top of the installation cover (14), the oil collecting bin (4) is coaxially and fixedly arranged at the lower end of the coarse filter cylinder (1), the upper end of the oil collecting bin (4) is of an open structure and faces the oil leakage ports (13), the oil outlet (5) is arranged on the outer wall of the oil collecting bin (4), a first bearing seat (15) in a horizontal state is arranged below the oil collecting bin (4), the oil gathering bin (4) is fixedly arranged at the top of the first bearing seat (15).

3. The long-life servo valve of the blower with the bypass system as recited in claim 2, wherein a vertically upward cylindrical boss (16) is coaxially formed at the bottom of the coarse filter cylinder (1), a cylindrical caulking groove is coaxially formed at the top of the cylindrical boss (16), a bearing (17) is embedded in the cylindrical caulking groove, the drum (2) is coaxially arranged in the coarse filter cylinder (1) for a cylindrical shell, a plurality of the separation holes (6) are uniformly formed on the circumferential wall of the drum (2) along the circumferential direction of the drum (2), a rotating column (18) is coaxially and fixedly arranged at the bottom of the drum (2), the rotating column (18) is coaxially inserted in the bearing (17), a plurality of the oil leakage ports (13) are uniformly distributed around the cylindrical boss (16) along the circumferential direction of the cylindrical boss (16), and a rotating shaft (19) is coaxially fixed on the drum (2), the upper end and the installation lid (14) looks coupling of pivot (19), the lower extreme of pivot (19) is vertical to pass column spinner (18), cylindricality boss (16) and oil gathering storehouse (4) downwards in proper order to extend to a bearing seat (15), the inside of bearing seat (15) is hollow form to fixed driving motor (20) that are vertical state that is equipped with, the lower extreme of pivot (19) passes the top of a bearing seat (15) and the output shaft of driving motor (20) is coaxial to be linked firmly.

4. The blower high-life servo valve with the bypass system as recited in claim 2, wherein a second bearing seat (21) in a horizontal state is fixedly disposed on one side of the first bearing seat (15), the housing (7) is rectangular and is fixedly disposed on the top of the second bearing seat (21), the oil inlet (8) is disposed on one side of the housing (7) close to the oil outlet (5), the oil inlet (8) and the oil outlet (5) are communicated through an external oil pipe (22), the bypass port (10) is disposed on the opposite side of the housing (7) having the oil inlet (8), a cylindrical accommodating groove (23) is disposed horizontally inward along the bypass port (10) on the housing (7), a through hole (24) communicated with the oil inlet (8) is coaxially disposed on the bottom of the cylindrical accommodating groove (23), the oil discharge port (9) is disposed on one side of the housing (7) close to the bypass port (10), and is communicated with the cylindrical accommodating groove (23), and the filtering mechanism is arranged in the cylindrical accommodating groove (23).

5. The long-life servo valve of the blower with the bypass system as recited in claim 4, wherein the filter housing (11) is a cylindrical housing and is horizontally disposed in the cylindrical receiving groove (23), two ends of the filter housing (11) are open structures, an inward end of the filter housing (11) abuts against a bottom of the cylindrical receiving groove (23), and the open structure thereof is communicated with the through hole (24), an outward end of the filter housing (11) is fixedly connected with a sidewall of the outer housing (7), and the open structure thereof is detachably provided with a side cover (25), the filter element comprises a cylindrical outer sleeve (26) and a cylindrical inner core barrel (27), the cylindrical outer sleeve (26) is horizontally disposed in the filter housing (11), and two ends of the cylindrical outer sleeve (26) are open structures, the cylindrical inner core barrel (27) is horizontally disposed in the cylindrical outer sleeve (26), one end of the cylindrical inner core cylinder (27) close to the through hole (24) is of a closed structure and is provided with a plurality of sieve holes (28), the other end of the cylindrical inner core cylinder (27) is of an open structure and is coaxially and detachably provided with a circular hollowed-out cover plate (29), a plurality of connecting rods (30) which are uniformly distributed along the circumferential direction of the cylindrical inner core cylinder (27) are formed at one end of the cylindrical inner core cylinder (27) provided with the circular hollow cover plate (29), each connecting rod (30) is in a horizontal state, a snap ring (31) is coaxially clamped at one end of the cylindrical outer sleeve (26) close to the bypass port (10), each connecting rod (30) extends towards one side and is fixedly connected with the snap ring (31), a plurality of filter paper sheets (32) which are connected with each other are arranged in the cylindrical inner core barrel (27), the cylindrical outer sleeve (26) is provided with a second leak hole (33) communicated with the first leak hole (12).

6. The long-life servo valve of the blower with the bypass system as recited in claim 5, wherein a rubber tube (34) is inserted into the second leakage hole (33), one end of the rubber tube (34) is formed with a ring-shaped flange (35), and the other end of the rubber tube (34) passes through the second leakage hole (33), the first leakage hole (12) and the cylindrical receiving groove (23) in sequence and extends into the communication part of the oil drain port (9) and the cylindrical receiving groove (23).

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