阅读说明：本技术 一种改进型高寿命螺杆空气压缩机 (Improved generation high life screw air compressor ) 是由 孙尉军 于 2021-11-17 设计创作，主要内容包括：本发明涉及空气压缩机领域,具体是涉及一种改进型高寿命螺杆空气压缩机,包括机壳、啮合副、齿轮副、油路系统以及管路系统,机壳由空压壳、隔板和驱动壳组成,所述驱动壳与隔板形成齿轮腔,所述齿轮腔内设有润滑油,隔板上成型有两个圆柱套,圆柱套内固定嵌装有耐磨轴套,圆柱套和耐磨轴套上均设有油路系统,所述油路系统用于将润滑油引流至耐磨衬套与啮合副的轴端。本发明的螺杆空压机通过在两个转子的齿轮啮合端增设润滑机构,润滑油经过管路系统泵送至油路系统,再经由油路系统进入转子轴端与耐磨轴套之间进行润滑,从而有效的降低了材料之间的摩擦损耗,提高了产品的使用寿命,保证了较好的空压效果。(The invention relates to the field of air compressors, in particular to an improved long-service-life screw air compressor which comprises a machine shell, an engagement pair, a gear pair, an oil path system and a pipeline system, wherein the machine shell consists of an air pressure shell, a partition plate and a driving shell, the driving shell and the partition plate form a gear cavity, lubricating oil is arranged in the gear cavity, two cylindrical sleeves are formed on the partition plate, wear-resistant shaft sleeves are fixedly embedded in the cylindrical sleeves, the oil path system is arranged on each of the cylindrical sleeves and the wear-resistant shaft sleeves, and the oil path system is used for guiding the lubricating oil to shaft ends of the wear-resistant bushings and the engagement pair. According to the screw air compressor, the lubricating mechanism is additionally arranged at the gear meshing ends of the two rotors, and lubricating oil is pumped to the oil way system through the pipeline system and then enters the space between the shaft end of the rotor and the wear-resistant shaft sleeve for lubrication through the oil way system, so that the friction loss between materials is effectively reduced, the service life of a product is prolonged, and a good air compression effect is ensured.)

1. An improved long life screw air compressor comprising:

the engine shell (1) is formed by sequentially and fixedly connecting an air pressure shell (2), a partition plate (3) and a driving shell (4), the air pressure shell (2) and the partition plate (3) form an air pressure chamber, the driving shell (4) and the partition plate (3) form a gear cavity, and lubricating oil (5) is arranged in the gear cavity;

the meshing pair is composed of a main rotor (6) and an auxiliary rotor (7), the meshing pair is arranged in the air compression chamber, and two ends of the main rotor (6) and the auxiliary rotor (7) are respectively in shaft connection with the air compression shell (2) and the partition plate (3); and the number of the first and second groups,

the gear pair is composed of two gears (8) positioned in a gear cavity, the two gears (8) are fixedly connected with the end parts of the main rotor (6) and the auxiliary rotor (7) respectively, and the shaft end of the main rotor (6) is fixedly connected with a belt driving wheel (9) after sequentially penetrating through the corresponding gear (8) and the driving shell (4);

the oil circuit system is used for guiding lubricating oil (5) to the shaft ends of the wear-resistant bushing and the meshing pair;

and a pipeline system for pumping lubricating oil (5) into the oil way system is also arranged in the gear cavity.

2. The improved long-life screw air compressor as claimed in claim 1, wherein a ring groove (14) is formed on the side of the partition plate (3) which is attached to the driving box, and a rubber sealing ring (15) is embedded in the ring groove (14).

3. The improved long-life screw air compressor of claim 1, wherein said oil system comprises:

the first oil inlet hole (16) is formed in the top wall of the cylindrical sleeve (10);

the spiral oil groove (17) is formed in the inner wall of the wear-resistant shaft sleeve (11), a second oil inlet hole (18) is formed in the outer side of the wear-resistant shaft sleeve (11), the second oil inlet hole (18) is communicated with one end of the spiral oil groove (17), the second oil inlet hole (18) is located in the first annular oil storage groove (27), and the position of the second oil inlet hole (18) corresponds to the position of the first oil inlet hole (16);

the first oil outlet hole (19) is formed in the outer wall of the wear-resistant sleeve, and the first oil outlet hole (19) is communicated with the other end of the spiral oil groove (17);

and the second oil outlet hole (20) is formed in the bottom wall of the cylindrical sleeve (10) and can correspond to the first oil outlet hole (19) in position.

4. The improved, long-life screw air compressor of claim 3, wherein said piping system comprises:

two oil inlet pipes (21) respectively formed at the tops of the two cylindrical sleeves (10), wherein each oil inlet pipe (21) is communicated with the corresponding first oil inlet hole (16);

the oil outlet pipe (22) is formed at the top of the inner side of the partition plate (3);

the threaded pipe joint (23) is screwed on the top of the partition plate (3) and is communicated with the oil outlet pipe (22);

an oil delivery pipe (24), one end of which is upwards connected with the oil outlet pipe (22), and the other end of which is divided into two parts and is respectively communicated with the two oil inlet pipes (21);

and the oil return port (25) is formed at the bottom of the partition plate (3) and is connected with the threaded pipe joint (23) from the outer side of the partition plate (3) through an oil pump and a hose (26).

5. The improved long-life screw air compressor as claimed in claim 3, wherein the outer wall of the wear-resistant bushing (11) is formed with a first annular oil storage groove (27) communicating with the first oil inlet hole (16).

6. The improved long-life screw air compressor as claimed in claim 3, wherein a second annular oil reservoir (28) passing through the second oil outlet hole (20) is formed on the inner wall of the cylindrical sleeve (10).

7. The improved long-life screw air compressor of claim 4, wherein the end of the oil delivery pipe (24) is sleeved on the oil outlet pipe (22) and the two oil inlet pipes (21) respectively and fixedly connected by a metal clamp (29).

8. An improved long life screw air compressor according to claim 1, characterized in that the volume of the lubricating oil (5) is less than half of the volume of the gear chamber.

Technical Field

The invention relates to the field of air compressors, in particular to an improved long-service-life screw air compressor.

Background

The screw air compressor is an oil injection single-stage double-screw compressor, is divided into a single-screw air compressor and a double-screw air compressor, adopts high-efficiency belt wheel transmission to drive a main machine to rotate for air compression, cools compressed air in the main machine through oil injection, separates air and oil mixed gas discharged by the main machine through a coarse separation process and a fine separation process, separates oil in the compressed air, and finally obtains clean compressed air. The cooler is used for cooling the compressed air and the oil.

The double-screw compressor is a double-shaft positive displacement rotary compressor, which is mainly characterized in that a main rotor (positive) and an auxiliary rotor (negative) are matched to form a meshing pair, the outer part of the tooth profile of the main rotor and the auxiliary rotor and the inner wall of a shell form a closed elementary volume, and the double screws have the defect that an accelerating gear needs to be added for 40 cubic meters and above models, so that the power consumption is increased, and the locking of a machine head is easy to occur; the worm compressor is a single-shaft positive displacement rotary compressor, the meshing pair of the worm compressor consists of a worm and two star wheels which are arranged symmetrically, and the worm screw groove, the tooth surfaces of the star wheels and the inner wall of a shell form a closed elementary volume, but the material of the star wheel sheet is not improved.

At present twin-screw air compressor machine in the use, wherein one end of its meshing pair need pass through gear engagement, and at the rotatory in-process of long-term high speed, the radial pressure that two gears interlock each other brought, lack the lubrication between wear-resisting bush and the pivot in addition, can accelerate the wearing and tearing between the pivot of meshing pair and the wear-resisting bush, and then produce the clearance, cause the meshing between two rotors no longer inseparable to influence the air compression effect.

Disclosure of Invention

In view of the above, there is a need to provide an improved long-life screw air compressor.

In order to solve the problems of the prior art, the invention adopts the technical scheme that:

an improved long life screw air compressor comprising:

the device comprises a shell, a driving shell and a driving shell, wherein the shell is formed by sequentially and fixedly connecting an air pressure shell, a partition plate and the driving shell, the air pressure shell and the partition plate form an air pressure chamber, the driving shell and the partition plate form a gear cavity, and lubricating oil is arranged in the gear cavity;

the meshing pair is composed of a main rotor and an auxiliary rotor, the meshing pair is arranged in the air compression chamber, and two ends of the main rotor and the auxiliary rotor are respectively connected with the air compression shell and the partition plate in a shaft mode; and the number of the first and second groups,

the gear pair consists of two gears positioned in a gear cavity, the two gears are fixedly connected with the end parts of the main rotor and the auxiliary rotor respectively, and the shaft end of the main rotor is fixedly connected with a belt driving wheel after sequentially penetrating through the corresponding gear and the driving shell;

the partition plate is provided with two cylindrical sleeves, wear-resistant shaft sleeves are fixedly embedded in the cylindrical sleeves, and oil way systems are arranged on the cylindrical sleeves and the wear-resistant shaft sleeves and used for guiding lubricating oil to shaft ends of the wear-resistant bushings and the meshing pairs;

and a pipeline system for pumping lubricating oil into the oil way system is also arranged in the gear cavity.

Preferably, an annular groove is formed in one side, attached to the driving box, of the partition plate, and a rubber sealing ring is embedded into the annular groove.

Preferably, the oil passage system includes:

the first oil inlet hole is formed in the top wall of the cylindrical sleeve;

the spiral oil groove is formed in the inner wall of the wear-resistant shaft sleeve, a second oil inlet hole is formed in the outer side of the wear-resistant shaft sleeve and communicated with one end of the spiral oil groove, the second oil inlet hole is located in the first annular oil storage groove, and the position of the second oil inlet hole corresponds to the position of the first oil inlet hole;

the first oil outlet hole is formed in the outer wall of the wear-resistant sleeve and communicated with the other end of the spiral oil groove;

the second oil outlet is formed in the bottom wall of the cylindrical sleeve, and the position of the second oil outlet corresponds to that of the first oil outlet.

Preferably, the piping system comprises:

the two oil inlet pipes are respectively formed at the tops of the two cylindrical sleeves, and each oil inlet pipe is communicated with the corresponding first oil inlet hole;

the oil outlet pipe is formed at the top of the inner side of the partition plate;

the threaded pipe joint is screwed on the top of the partition plate and is communicated with the oil outlet pipe;

one end of the oil delivery pipe is upwards connected with the oil outlet pipe, and the other end of the oil delivery pipe is divided into two parts which are respectively communicated with the two oil inlet pipes;

and the oil return port is formed at the bottom of the partition plate and is connected with the threaded pipe joint from the outer side of the partition plate through an oil pump and a hose.

Preferably, the inner wall of the wear-resistant shaft sleeve is provided with a first annular oil storage tank communicated with the first oil inlet hole.

Preferably, a second annular oil storage groove passing through the second oil outlet hole is formed in the inner wall of the cylindrical sleeve.

Preferably, the end part of the oil delivery pipe is respectively sleeved on the oil outlet pipe and the two oil inlet pipes and fixedly connected by a metal hoop.

Preferably, the volume of the lubricating oil is less than half of the volume of the gear cavity.

Compared with the prior art, the invention has the beneficial effects that: according to the screw air compressor, the lubricating mechanism is additionally arranged at the gear meshing ends of the two rotors, and lubricating oil is pumped to the oil way system through the pipeline system and then enters the space between the shaft end of the rotor and the wear-resistant shaft sleeve for lubrication through the oil way system, so that the friction loss between materials is effectively reduced, the service life of a product is prolonged, and a good air compression effect is ensured.

Drawings

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

FIG. 2 is a schematic perspective view of the second embodiment;

FIG. 3 is an exploded perspective view of the embodiment;

FIG. 4 is a perspective exploded view of a part of the first embodiment;

FIG. 5 is a partially exploded perspective view of the second embodiment;

FIG. 6 is a schematic perspective view of a cylindrical sleeve according to an embodiment;

fig. 7 is a perspective view of the wear-resistant bushing of the embodiment;

FIG. 8 is a plan view of a gear chamber of the embodiment;

FIG. 9 is a plan sectional view taken along line A-A of FIG. 8;

FIG. 10 is a plan sectional view taken along line B-B of FIG. 8;

the reference numbers in the figures are:

1-a machine shell; 2-an air-pressure shell; 3-a separator; 4-a drive shell; 5-lubricating oil; 6-a main rotor; 7-a secondary rotor; 8-gear; 9-belt drive wheel; 10-a cylindrical sleeve; 11-wear-resistant shaft sleeve; 12-an air inlet; 13-air outlet; 14-a ring groove; 15-rubber sealing ring; 16-a first oil inlet hole; 17-a helical oil groove; 18-a second oil inlet hole; 19-a first oil outlet; 20-a second oil outlet; 21-oil inlet pipe; 22-an oil outlet pipe; 23-a threaded pipe joint; 24-an oil delivery pipe; 25-oil return port; 26-a hose; 27-a first annular oil reservoir; 28-a second annular oil reservoir; 29-metal clip.

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 10, an improved long-life screw air compressor includes:

the engine shell 1 is formed by sequentially and fixedly connecting an air compression shell 2, a partition plate 3 and a driving shell 4, wherein the air compression shell 2 and the partition plate 3 form an air compression chamber, the driving shell 4 and the partition plate 3 form a gear cavity, and lubricating oil 5 is arranged in the gear cavity;

the meshing pair is composed of a main rotor 6 and an auxiliary rotor 7, the meshing pair is arranged in the air compression chamber, and two ends of the main rotor 6 and the auxiliary rotor 7 are respectively connected with the air compression shell 2 and the partition plate 3 in a shaft mode; and the number of the first and second groups,

the gear pair is composed of two gears 8 positioned in a gear cavity, the two gears 8 are fixedly connected with the end parts of the main rotor 6 and the auxiliary rotor 7 respectively, and the shaft end of the main rotor 6 is fixedly connected with a belt driving wheel 9 after sequentially penetrating through the corresponding gear 8 and the driving shell 4;

the partition plate 3 is provided with two cylindrical sleeves 10, a wear-resistant shaft sleeve 11 is fixedly embedded in each cylindrical sleeve 10, and the cylindrical sleeves 10 and the wear-resistant shaft sleeves 11 are respectively provided with an oil way system which is used for guiding the lubricating oil 5 to the shaft ends of the wear-resistant bushing and the meshing pair;

and a pipeline system for pumping the lubricating oil 5 into the oil way system is also arranged in the gear cavity.

The compressor is connected to a belt driving wheel 9 through an external power source, so that the belt driving wheel 9 is driven to rotate, the belt driving wheel 9 is further used for driving a main rotor 6 and an auxiliary rotor 7 of a meshing pair to rotate oppositely, the top of an air compression shell 2 is provided with an air inlet 12, one end of the air compression shell is provided with an air outlet 13, so that air is sucked from the air inlet 12 above in the working process of the meshing pair, and is compressed and then sent out from the air outlet 13, and the purpose of air compression is achieved. In the process, the two gears 8 rotating at high speed drive the meshing pair to operate, in order to prolong the service life of the gears 8, lubricating oil 5 is injected into the gear cavity to reduce the metal friction loss of the gears 8, and the lubricating oil 5 is stirred in the rotating process of the gears 8, so that the lubricating oil 5 enters the tooth gaps of the two gears 8, and the purpose of reducing the friction loss is realized; on the other hand, lubricating oil 5 in the gear cavity is pumped into an oil way system through a pipeline system, and the lubricating oil 5 enters the space between the wear-resistant shaft sleeve 11 and the shaft end of the meshing pair through the oil way system for lubrication, so that the abrasion between the meshing pair rotating at a high speed and the wear-resistant shaft sleeve 11 is reduced, and the service life is prolonged.

An annular groove 14 is formed in one side, attached to the driving box, of the partition plate 3, and a rubber sealing ring 15 is embedded in the annular groove 14. Through inlaying rubber seal 15 in the border department between baffle 3 and the drive box for guarantee the leakproofness of gear 8 case, prevent the outside seepage of lubricating oil 5.

The oil path system includes:

a first oil inlet hole 16 formed on the top wall of the cylindrical sleeve 10;

the spiral oil groove 17 is formed on the inner wall of the wear-resistant shaft sleeve 11, a second oil inlet 18 is formed in the outer side of the wear-resistant shaft sleeve 11, the second oil inlet 18 is communicated with one end of the spiral oil groove 17, the second oil inlet 18 is located in the first annular oil storage groove 27, and the position of the second oil inlet 18 corresponds to the position of the first oil inlet 16;

the first oil outlet hole 19 is formed in the outer wall of the wear-resistant sleeve, and the first oil outlet hole 19 is communicated with the other end of the spiral oil groove 17;

and a second oil outlet hole 20 formed in the bottom wall of the cylindrical sleeve 10 at a position corresponding to the first oil outlet hole 19.

When the lubricating oil 5 is pumped into the oil path system through the pipeline system, the lubricating oil 5 firstly enters the spiral oil groove 17 through the first oil inlet hole 16 and the second oil inlet hole 18 in sequence, the shaft end of the meshing pair can drive the lubricating oil 5 to move along the spiral direction of the spiral oil groove 17 in the process of high-speed rotation, and when the lubricating oil 5 comes to the other end of the spiral oil groove 17, the lubricating oil flows back to the gear cavity through the first oil outlet hole 19 and the second oil outlet hole 20 in sequence.

In the process, when the lubricating oil 5 flows in the spiral oil groove 17, the lubricating oil 5 can stretch into and be filled between the outer wall of the shaft end of the meshing pair and the inner wall of the wear-resistant shaft sleeve 11 for lubrication, so that the friction loss between the meshing pair and the wear-resistant shaft sleeve 11 is reduced, and the service life is prolonged.

The piping system includes:

two oil inlet pipes 21 respectively formed at the tops of the two cylindrical sleeves 10, wherein each oil inlet pipe 21 is communicated with the corresponding first oil inlet hole 16;

an oil outlet pipe 22 formed at the top of the inner side of the partition plate 3;

the threaded pipe joint 23 is screwed on the top of the clapboard 3 and is communicated with the oil outlet pipe 22;

an oil delivery pipe 24, one end of which is upward connected with the oil outlet pipe 22, and the other end of which is divided into two parts and respectively communicated with the two oil inlet pipes 21;

an oil return port 25, which is formed in the bottom of the partition 3, is connected to the threaded pipe joint 23 from the outside of the partition 3 via an oil pump and a hose 26.

The oil pump is installed in the outside of casing 1, and the oil pump circulates the pump into the oil piping system through hose 26 after pumping the lubricating oil 5 in the gear chamber through oil return opening 25, and lubricating oil 5 sends into screwed pipe joint 23, play oil pipe 22 and defeated oil pipe 24 in proper order through the oil pump after, at last respectively advances oil pipe 21 pump into corresponding wear-resisting axle sleeve 11 inner wall through two and lubricates.

The outer wall of the wear-resistant shaft sleeve 11 is provided with a first annular oil storage groove 27 communicated with the first oil inlet hole 16. Through addding first annular oil storage tank 27 between the inner wall of cylinder cover 10 and the outer wall of wear-resisting axle sleeve 11 to in-process that carries out the pressure equipment with wear-resisting axle sleeve 11 and cylinder cover 10, even first inlet port 16 is not aimed at completely with second inlet port 18, also can make the abundant spiral oil groove 17 that gets into of lubricating oil 5, lubricating oil 5 can get into first annular oil storage tank 27 through first inlet port 16 earlier, and the fluid in first annular oil storage tank 27 gets into spiral oil groove 17 through second inlet port 18 again afterwards.

A second annular oil reservoir 28 passing through the second oil outlet hole 20 is formed on the inner wall of the cylindrical sleeve 10. Through add second annular oil storage tank 28 between the inner wall at wear-resisting axle sleeve 11 and the vice pivot outer wall of meshing to in first oil outlet 19 and second oil outlet 20 are not completely aligned, also can make the abundant spiral oil groove 17 that gets into of lubricating oil 5, lubricating oil 5 can pass through first oil outlet 19 earlier and get into second annular oil storage tank 28, and the fluid in second annular oil storage tank 28 again passes through second oil outlet 20 afterwards and flows back to the gear chamber.

The end parts of the oil delivery pipes 24 are respectively sleeved on the oil outlet pipe 22 and the two oil inlet pipes 21 and are fixedly connected through metal clamps 29. The end of the oil delivery pipe 24 is fixedly connected through a metal clamp 29 to prevent pipe falling and ensure that oil can smoothly enter an oil way system.

The volume of the lubricating oil 5 is less than half of the volume of the gear cavity. The lubricating fluid should not be too much, otherwise the fluid resistance will increase the energy consumption, the height of the lubricating fluid should reach the standard of submerging the bottom of the gear 8, and when the gear 8 rotates past the bottom, the lubricating fluid is brought up and enters into the tooth gap, thereby reducing the friction coefficient in the meshing process of the two gears 8.

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 invention. 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.