CN115788895A - Totally-enclosed variable scroll compressor - Google Patents

Abstract

The invention discloses a totally-enclosed variable scroll compressor, which relates to the technical field of compressors and comprises a compressor shell, a turbine assembly and an oil way assembly; the turbine assembly is assembled in the compressor shell; the oil circuit component is arranged at the bottom of the compressor shell; the turbine assembly comprises a crankshaft and a motor part for driving the crankshaft, the oil circuit assembly comprises an oil storage tank and an oil circuit pipe, a bearing mechanism is mounted at the top end of the oil storage tank, and the bearing mechanism is connected with the crankshaft in a matched mode; the technical key points are as follows: through design bearing mechanism and external oil circuit pipe, utilize the holder among the bearing mechanism, can avoid taking place the friction between the rolling element to accomplish the spacing to the rolling element, effectively prevented the increase of rotation torque, the region between each rolling element is filled to the accurate region of filling of oil circuit pipe exhaust lubricating oil simultaneously.

Description

Totally-enclosed variable scroll compressor

Technical Field

The invention relates to the technical field of compressors, in particular to a fully-closed variable scroll compressor.

Background

The scroll compressor is formed by mutually meshing a movable scroll and a fixed scroll which have two double-function equation molded lines. In the working process of air suction, compression and exhaust, the static disc is fixed on the frame, and the moving disc is driven by the eccentric shaft and restricted by the anti-rotation mechanism to rotate around the center of the base circle of the static disc in a plane with a small radius; the air is sucked into the periphery of the static disc through the air filter element, and along with the rotation of the eccentric shaft, the air is gradually compressed in a plurality of crescent compression cavities formed by the engagement of the static disc and then is continuously discharged from an axial hole of the central part of the static disc; when the scroll compressor is used for compressing air, the air is compressed, so that the pressure and the temperature of the air are both improved, in the high-speed operation process of the scroll compressor, the movable scroll disk and the static scroll disk are directly contacted with the compressed air, the heat of the compressed air can be conducted to the movable scroll disk and the static scroll disk, the temperature of the movable scroll disk and the static scroll disk rises, the temperature rise of the movable scroll disk and the static scroll disk easily influences the stability of the movable scroll disk and the static scroll disk structure, the direct tightness of the movable scroll disk and the static scroll disk is reduced, and the intervention control on the temperature inside the compressor is needed in order to ensure the stability of the scroll compressor.

The inside bottom of compressor has set the bottom bearing, adopt ball bearing to accomplish the support and the connection to the bent axle usually, also can design the oil groove in bottom bearing below, but can take place the friction in the traditional design between each ball in the ball bearing, if need add emollient between each ball, then need be with the help of the oil pump, the top with the leading-in ball bearing of lubricating oil, the pertinence lubrication treatment of unable realization, and simultaneously, deposit phenomenon easily takes place for lubricating oil in the traditional oil groove, the deposit of this part can not be handled for a long time, can influence the memory space of oil groove in the time.

Disclosure of Invention

The technical problem to be solved is as follows:

aiming at the defects of the prior art, the invention provides a totally-enclosed variable scroll compressor, which can avoid friction among rolling bodies and limit the rolling bodies by using a retainer in a bearing mechanism through designing the bearing mechanism and an external oil line pipe, effectively prevent the increase of the rotation torque, and simultaneously accurately fill lubricating oil discharged by the oil line pipe into the area among the rolling bodies so as to solve the technical problems mentioned in the background technology.

The technical scheme is as follows:

in order to achieve the purpose, the invention is realized by the following technical scheme:

a totally-enclosed variable scroll compressor comprises a compressor shell, a turbine assembly and an oil circuit assembly;

the turbine assembly is assembled in a compressor shell, and the turbine assembly is used as a core transmission structure of the compressor, namely an existing structure;

the oil circuit component is arranged at the bottom of the compressor shell and can enable lubricating oil to circularly flow;

wherein, turbine component contains the bent axle and is used for driving the motor spare of bent axle, the oil circuit subassembly contains oil storage tank and oil circuit pipe, bearing mechanism is installed on the top of oil storage tank, and bearing mechanism is connected with the supporting formula of bent axle, the one end and the oil storage tank intercommunication of oil circuit pipe, the other end with the regional intercommunication that forms between bearing mechanism and the bent axle, the specific position of oil circuit pipe of this department can be seen from referring to figure 3.

In a possible implementation manner, the base is welded at the bottom of the compressor housing, threaded holes are formed in four corners of the base, bolts are installed in the threaded holes and used for connecting the base with a mounting surface between plants, and the normal base is used for supporting the whole compressor.

In one possible implementation manner, the outer wall of the compressor shell is provided with a gas suction pipe and a gas discharge pipe respectively; wherein, the air suction pipe is communicated with the inner cavity of the compressor shell; the exhaust pipe is communicated with a scroll plate arranged in the compressor shell, and the scroll plate is arranged at the top end of the crankshaft.

In a possible implementation manner, the motor part includes a motor rotor and a motor stator which are distributed in an internal and external manner, and the motor rotor and the motor stator are both distributed on the outer side of the crankshaft in a surrounding manner.

In one possible implementation, the oil storage tank is welded to the bottom end of the compressor housing, the bottom end of the crankshaft penetrates through the bearing mechanism and extends into the oil storage tank, and the crankshaft can stir the lubricating oil in the oil storage tank while rotating.

In a possible implementation manner, a miniature pump body is installed on the oil path pipe, a spiral pipe is arranged on the outer surface of the motor stator in a winding manner, and the spiral pipe is used for communicating the outlet end of the miniature pump body with the oil storage tank; an oil outlet thin tube and an oil discharge thin tube are respectively arranged at two ends of the spiral tube; a three-way valve body is arranged between the oil outlet thin tube and the outlet end of the miniature pump body and is used for controlling a passage in the oil path pipe and the spiral pipe; the oil discharge thin pipe is longitudinally inserted on the top surface of the oil storage tank; specifically, an external oil path pipe is combined with a bearing mechanism, lubricating oil in an oil storage tank can be lubricated by the aid of a miniature pump body designed on the oil path pipe, smooth operation of a crankshaft is further guaranteed, and meanwhile the lubricating oil cooled in the oil path pipe can enter a spiral pipe to take away heat generated by a motor part.

In one possible implementation, the bearing mechanism includes an inner collar and an outer collar arranged in an inner and outer manner; the inner shaft ring is rotatably assembled in the outer shaft ring, and the inner shaft ring is used for the crankshaft to pass through and is in spot welding connection with the outer surface of the crankshaft; the outer shaft ring is welded on the surface of an opening end preset at the top end of the oil storage tank; a plurality of rolling bodies and cages are arranged between the inner collar and the outer collar; the oil storage tank and the bearing mechanism are combined, so that lubricating oil in the oil storage tank can be stirred while the crankshaft rotates, meanwhile, rolling bodies arranged in the bearing mechanism adopt a centripetal rolling bearing structure, and a retainer is arranged between the rolling bodies to ensure that the whole crankshaft keeps preliminary smooth operation;

the rolling bodies mentioned above are of cylindrical construction; the cross section of the retainer is circular, and a plurality of notches are formed in the outer surface of the retainer for the corresponding rolling bodies to be installed; seted up a plurality of spouts on the inner wall of outer axle collar, seted up the interface on the outer wall of outer axle collar, supply the oil circuit pipe is spiral to be packed into, all communicate each other with each spout to the interface.

Has the advantages that:

firstly, in the scheme, the bottom bearing in the traditional compressor shell is improved, and the oil storage tank is combined with the bearing mechanism, so that the lubricating oil in the oil storage tank can be stirred while the crankshaft rotates, the condition of lubricating oil deposition is avoided, meanwhile, the rolling bodies in the bearing mechanism adopt a centripetal rolling bearing structure, and a retainer is arranged between the rolling bodies, so that the rolling bodies can be prevented from inclining or rubbing against each other, the increase of rotating torque is effectively prevented, and the whole crankshaft is ensured to keep preliminary smooth operation;

secondly, in this scheme, combine together external oil circuit pipe and bearing mechanism, utilize the miniature pump body of oil circuit pipe design can make the lubricating oil in the oil storage tank accomplish the lubrication treatment to each rolling element, further guaranteed the smooth and easy operation of bent axle, the lubricating oil of oil circuit intraductal cooling can get into the spiral pipe simultaneously, takes away the heat that the motor spare produced, has embodied the flexibility of whole compressor design.

Drawings

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial structural internal cross-sectional view of the present invention;

FIG. 3 is a schematic view of the stator structure of the motor of the present invention

FIG. 4 is a schematic view of the construction of the storage tank of the present invention;

FIG. 5 is a schematic view of the bearing mechanism of the present invention;

FIG. 6 is a schematic view of an outer collar structure of the present invention;

fig. 7 is a schematic view of the bearing mechanism of the present invention in a disassembled state.

Illustration of the drawings: 1. a compressor housing; 2. a base; 3. an exhaust pipe; 4. an air intake duct; 5. an oil line pipe; 6. a crankshaft; 7. a motor stator; 8. a spiral tube; 9. an oil storage tank; 10. a bearing mechanism; 101. an outer collar; 102. an inner collar; 103. a holder; 104. a rolling body; 11. a miniature pump body; 12. a three-way valve body; 13. an oil outlet thin tube; 14. a thin oil discharge pipe; 15. a butt joint port; 16. and (4) a nozzle.

Detailed Description

The embodiment of the application provides a totally-enclosed variable scroll compressor, through design bearing mechanism and external oil circuit pipe, utilize the holder among the bearing mechanism, can avoid taking place the friction between the rolling element to accomplish spacing to the rolling element, effectively prevented the increase of rotation torque, the region between each rolling element is filled to the accurate filling of the lubricated oil of oil circuit pipe exhaust simultaneously, in order to solve the technical problem who mentions among the background art.

Aiming at the problems in the prior art, the invention provides a totally-enclosed variable scroll compressor, which comprises the following specific structures:

1-compressor housing

The bottom of the compressor shell is welded with a base, threaded holes are formed in four corners of the base for bolts to be installed, and the bolts are used for connecting the base and a mounting surface of a workshop;

wherein, the outer wall of the compressor shell is respectively provided with an air suction pipe and an air exhaust pipe; the air suction pipe is communicated with the inner cavity of the shell of the compressor; the exhaust pipe is communicated with a scroll plate arranged in the shell of the compressor, and the scroll plate is arranged at the top end of the crankshaft.

2-turbine assembly

The turbine assembly is assembled in a compressor shell, and comprises a crankshaft and a motor part for driving the crankshaft;

wherein, motor spare contains motor rotor and the motor stator that is inside and outside formula and distributes, and motor rotor and motor stator all encircle the formula and distribute in the outside of bent axle.

3-oil way assembly

The oil circuit component is arranged at the bottom of the compressor shell;

the oil circuit component comprises an oil storage tank and an oil circuit pipe, wherein a bearing mechanism is mounted at the top end of the oil storage tank and is connected with the crankshaft in a matched manner, one end of the oil circuit pipe is communicated with the oil storage tank, and the other end of the oil circuit pipe is communicated with an area formed between the bearing mechanism and the crankshaft;

the oil storage tank welds in the bottom of compressor housing, and the bearing mechanism is run through to the bottom of bent axle to in extending to the oil storage tank, should locate design oil storage tank and bearing mechanism and combine together, make the bent axle can stir the lubricating oil in the oil storage tank when accomplishing the pivoted, the rolling element that establishes simultaneously in the bearing mechanism adopts centripetal rolling bearing structure, is equipped with the holder between the rolling element, guarantees that whole bent axle keeps preliminary smooth and easy operation.

The oil pipeline pipe is provided with a miniature pump body, the outer surface of the motor stator is provided with a spiral pipe in a winding mode, and the spiral pipe is used for communicating the outlet end of the miniature pump body with the oil storage tank; two ends of the spiral pipe are respectively provided with an oil outlet thin pipe and an oil discharge thin pipe;

a three-way valve body is arranged between the oil outlet thin tube and the outlet end of the miniature pump body and is used for controlling a passage in the oil path pipe and the spiral pipe; the oil discharge thin tube is longitudinally inserted on the top surface of the oil storage tank.

The bearing mechanism comprises an inner collar and an outer collar which are distributed in an inner and outer mode; the inner shaft ring is rotatably assembled in the outer shaft ring, and the inner shaft ring is used for the crankshaft to pass through and is in spot welding connection with the outer surface of the crankshaft; the outer shaft ring is welded on the surface of an opening end preset at the top end of the oil storage tank; a plurality of rolling bodies and cages are arranged between the inner collar and the outer collar; wherein, the rolling body is of a cylindrical structure; the cross section of the retainer is circular, and a plurality of notches are formed in the outer surface of the retainer for the corresponding rolling bodies to be arranged in; the inner wall of the outer shaft collar is provided with a plurality of nozzles, the outer wall of the outer shaft collar is provided with a butt joint port, the oil supply pipeline is spirally arranged, and the butt joint port is communicated with each nozzle; the external oil path pipe is combined with the bearing mechanism, lubricating oil in the oil storage tank can be lubricated by the miniature pump body designed on the oil path pipe, so that smooth operation of the crankshaft is further guaranteed, and meanwhile, the lubricating oil cooled in the oil path pipe can enter the spiral pipe to take away heat generated by the motor part.

In order to solve the problems of the background art, the technical scheme in the embodiment of the application has the following general idea:

example 1:

the embodiment introduces a specific structure of a totally-enclosed variable scroll compressor, and as shown in fig. 1 to 7, the compressor comprises a compressor housing 1, a turbine assembly and an oil circuit assembly;

a turbine assembly is assembled in the compressor shell 1, and the turbine assembly is used as a core transmission structure of the compressor, namely an existing structure;

the oil circuit component is arranged at the bottom of the compressor shell 1 and can enable lubricating oil to circularly flow;

wherein, turbine assembly contains bent axle 6 and is used for driving the motor spare of bent axle 6, and the oil circuit subassembly contains oil storage tank 9 and oil circuit pipe 5, and bearing mechanism 10 is installed on the top of oil storage tank 9, and bearing mechanism 10 is connected with bent axle 6 supporting formula, and bent axle 6 can drive interior collar 102 among the bearing mechanism 10 and rotate.

In some examples, the base 2 is welded at the bottom of the compressor shell 1, threaded holes are formed in four corners of the base 2 for bolts to be installed, the bolts are used for connecting the base 2 with a factory installation surface, and the base 2 at the position plays a role in supporting the whole compressor.

In some examples, the outer wall of the compressor housing 1 is provided with a suction pipe 4 and a discharge pipe 3, respectively, and the specific working process is that gas enters the compressor from the suction pipe 4 and then is discharged from the discharge pipe 3;

wherein, the air suction pipe 4 is communicated with the inner cavity of the compressor shell 1;

the exhaust pipe 3 is communicated with a scroll disk arranged in the compressor shell 1, and the scroll disk is arranged at the top end position of the crankshaft 6, and the scroll disk at the position is a core part matched with the compressor.

In some examples, the motor element includes a motor rotor and a motor stator 7 which are distributed inside and outside, and the motor rotor and the motor stator 7 are both distributed around the outer side of the crankshaft 6, where the motor rotor drives the crankshaft 6 to rotate in the motor stator 7.

In some examples, the oil storage tank 9 is welded to the bottom end of the compressor housing 1, and the bottom end of the crankshaft 6 extends through the bearing mechanism 10 and into the oil storage tank 9, where the crankshaft 6 rotates while a stirring blade is designed on the bottom end of the crankshaft 6, so as to complete the stirring treatment of the lubricating oil in the oil storage tank 9 and avoid the deposition of the lubricating oil.

In a specific use, the crankshaft 6 in the compressor housing 1 rotates, and simultaneously, the crankshaft 6 drives the inner collar 102 in the bearing mechanism 10 to synchronously operate, the rolling elements 104 roll between the inner collar and the outer collar, and the end of the crankshaft 6 extending into the oil storage tank 9 can complete the stirring treatment of the lubricating oil in the oil storage tank 9.

By adopting the technical scheme:

bottom bearing in traditional compressor housing 1 improves, design oil storage tank 9 and bearing mechanism 10 combine together, make bent axle 6 can stir the lubricating oil in the oil storage tank 9 when accomplishing the pivoted, avoid taking place the condition of lubricating oil deposit, the rolling element 104 that establishes simultaneously in the bearing mechanism 10 adopts the centripetal rolling bearing structure, be equipped with holder 103 between the rolling element 104, can prevent the slope of rolling element 104 or the looks mutual friction between the rolling element 104, the increase of rotary torque has effectively been prevented, guarantee that whole bent axle 6 keeps preliminary smooth and easy operation.

Example 2:

based on embodiment 1, the present embodiment describes a specific structure of an oil path pipe in a fully-enclosed variable scroll compressor, as shown in fig. 2 to 7, a turbine assembly includes a crankshaft 6 and a motor element for driving the crankshaft 6, the oil path assembly includes an oil storage tank 9 and an oil path pipe 5, a bearing mechanism 10 is installed at a top end of the oil storage tank 9, the bearing mechanism 10 is connected with the crankshaft 6 in a matching manner, one end of the oil path pipe 5 is communicated with the oil storage tank 9, the other end is communicated with an area formed between the bearing mechanism 10 and the crankshaft 6, and a specific distribution position of the oil path pipe 5 can be seen with reference to fig. 3.

In some examples, a miniature pump body 11 is mounted on the oil path pipe 5, a spiral pipe 8 is wound on the outer surface of the motor stator 7, and the spiral pipe 8 is used for communicating the outlet end of the miniature pump body 11 with the oil storage tank 9; the two ends of the spiral pipe 8 are respectively provided with an oil outlet tubule 13 and an oil discharge tubule 14;

a three-way valve body 12 is arranged between the oil outlet tubule 13 and the outlet end of the miniature pump body 11, the three-way valve body 12 is used for controlling a passage between the oil circuit pipe 5 and the spiral pipe 8, and the three-way valve body 12 at the position can be connected with an external PLC226 controller to complete control processing;

the oil drain thin pipe 14 is longitudinally inserted on the top surface of the oil storage tank 9.

In a specific application scenario:

the three-way valve body 12 is controlled to communicate the passages in the oil pipeline 5;

at this time, the micro pump body 11 extracts the lubricating oil in the oil storage tank 9, then the lubricating oil is sent into the butt joint 15 through the oil path pipe 5, finally the lubricating oil is sprayed out from each nozzle 16 in fig. 5, the lubricating treatment of each rolling element 104 is completed, and the redundant lubricating oil can enter the oil storage tank 9 from the inlet end of the oil storage tank 9 under the action of self gravity;

the three-way valve body 12 is controlled to communicate the passages in the spiral pipe 8;

at this moment, the lubricating oil in the oil storage tank 9 is extracted by the miniature pump body 11, then after passing through part of the oil path pipe 5, enters the spiral pipe 8 from the oil outlet tubule 13, then is discharged from the oil discharge tubule 14, and finally enters the oil storage tank 9, and in this process, the heat generated by the motor stator 7 can be taken away by the cooled lubricating oil.

In some examples, the bearing mechanism 10 includes an inner collar 102 and an outer collar 101 arranged in an inner and outer pattern;

wherein, the inner collar 102 is rotatably assembled in the outer collar 101, and the inner collar 102 is used for the crankshaft 6 to pass through and is connected with the outer surface of the crankshaft 6 in a spot welding manner; the outer collar 101 is welded to a predetermined open end surface of the top end of the reservoir 9, where the overall structure of the outer collar 101 can be seen with reference to fig. 5;

a plurality of rolling bodies 104 and a retainer 103 are arranged between the inner collar 102 and the outer collar 101; the rolling bodies 104 are cylindrical structures; the cross section of the retainer 103 is circular, and a plurality of notches are formed in the outer surface of the retainer 103 for the corresponding rolling bodies 104 to be installed in, and the notches are used for positioning the corresponding single rolling bodies 104.

In some examples, the inner wall of the outer collar 101 is provided with a plurality of nozzles 16, the outer wall of the outer collar 101 is provided with a docking port 15, the oil supply pipeline 5 is spirally installed, the docking port 15 and each nozzle 16 are communicated with each other, and the lubricating oil entering from the docking port 15 can be finally sprayed out from each nozzle 16.

By adopting the technical scheme:

the external oil path pipe 5 is combined with the bearing mechanism 10, lubricating oil in the oil storage tank 9 can be lubricated and treated on each rolling element 104 by utilizing the miniature pump body 11 designed on the oil path pipe 5, the smooth operation of the crankshaft 6 is further ensured, meanwhile, the lubricating oil cooled in the oil path pipe 5 can enter the spiral pipe 8, heat generated by a motor part is taken away, and the design flexibility of the whole compressor is embodied.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims (10)

1. A totally enclosed variable scroll compressor, comprising:

a compressor housing (1);

a turbine assembly fitted within the compressor housing (1); and

the oil circuit component is arranged at the bottom of the compressor shell (1);

wherein, turbine subassembly contains bent axle (6) and is used for driving the motor part of bent axle (6), the oil circuit subassembly contains oil storage tank (9) and oil circuit pipe (5), bearing mechanism (10) are installed on the top of oil storage tank (9), and bearing mechanism (10) are connected with bent axle (6) supporting formula, the one end and oil storage tank (9) intercommunication of oil circuit pipe (5), the other end with the regional intercommunication that forms between bearing mechanism (10) and bent axle (6).

2. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: the bottom welding of compressor housing (1) has base (2), and the four corners position of base (2) all sets up threaded hole, supplies the bolt to pack into, and the bolt is used for connecting base (2) and the installation face between the factory.

3. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: the outer wall of the compressor shell (1) is provided with an air suction pipe (4) and an air exhaust pipe (3) respectively;

wherein, the air suction pipe (4) is communicated with the inner cavity of the compressor shell (1);

the exhaust pipe (3) is communicated with a scroll disc arranged in the compressor shell (1), and the scroll disc is arranged at the top end of the crankshaft (6).

4. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: the motor part comprises a motor rotor and a motor stator (7) which are distributed in an internal and external mode, and the motor rotor and the motor stator (7) are distributed on the outer side of the crankshaft (6) in a surrounding mode.

5. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: the oil storage tank (9) is welded at the bottom end of the compressor shell (1), and the bottom end of the crankshaft (6) penetrates through the bearing mechanism (10) and extends into the oil storage tank (9).

6. A totally enclosed variable scroll compressor as claimed in claim 4, wherein: install miniature pump body (11) on oil circuit pipe (5), the surface wound form of motor stator (7) is provided with spiral pipe (8), and spiral pipe (8) are used for communicateing exit end and oil storage tank (9) of miniature pump body (11).

7. A totally enclosed variable scroll compressor as claimed in claim 6, wherein: two ends of the spiral pipe (8) are respectively provided with an oil outlet thin pipe (13) and an oil discharge thin pipe (14);

a three-way valve body (12) is arranged between the oil outlet thin tube (13) and the outlet end of the miniature pump body (11), and the three-way valve body (12) is used for controlling the passage in the oil path tube (5) and the spiral tube (8);

the oil discharge thin tube (14) is longitudinally inserted on the top surface of the oil storage tank (9).

8. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: the bearing mechanism (10) comprises an inner collar (102) and an outer collar (101) which are distributed in an inner and outer mode;

wherein the inner collar (102) is rotatably assembled in the outer collar (101), and the inner collar (102) is used for a crankshaft (6) to pass through and is in spot welding connection with the outer surface of the crankshaft (6);

the outer collar (101) is welded to a preset opening end surface at the top end of the oil storage tank (9).

9. A hermetically sealed variable scroll compressor as claimed in claim 1, wherein: a plurality of rolling bodies (104) and a retainer (103) are assembled between the inner collar (102) and the outer collar (101);

wherein the rolling bodies (104) are of cylindrical configuration;

the cross section of the retainer (103) is circular, and a plurality of notches are formed in the outer surface of the retainer (103) and used for the corresponding rolling bodies (104) to be installed.

10. A totally enclosed variable scroll compressor as claimed in claim 1, wherein: a plurality of nozzles (16) are arranged on the inner wall of the outer ring collar (101), a butt joint port (15) is arranged on the outer wall of the outer ring collar (101) and used for spirally loading the oil path pipe (5), and the butt joint port (15) is communicated with the nozzles (16).

Images