CN108006065B - Water-lubricated bearing and compressor with water-lubricated bearing - Google Patents
Water-lubricated bearing and compressor with water-lubricated bearing Download PDFInfo
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- CN108006065B CN108006065B CN201711320240.XA CN201711320240A CN108006065B CN 108006065 B CN108006065 B CN 108006065B CN 201711320240 A CN201711320240 A CN 201711320240A CN 108006065 B CN108006065 B CN 108006065B
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- water lubrication
- bearing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000005461 lubrication Methods 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 208000035874 Excoriation Diseases 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/50—Lubricating properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/43—Screw compressors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a water lubrication bearing and a compressor with the water lubrication bearing, comprising a first sliding surface, a second sliding surface and a third sliding surface, wherein the first sliding surface is an axial thrust surface and has the function of a thrust bearing, the second sliding surface is a radial sliding surface and has the function of a radial bearing, and the third sliding surface is an axial thrust surface and has the function of reverse thrust. The bearing effectively solves the problem that the existing water lubrication sliding bearing cannot bear radial force and axial force at the same time, integrates the reverse thrust function, ensures that the water lubrication rotary machine is compact in structure, improves the reliability of machine operation, greatly reduces the cost of post maintenance, and has simple manufacturing and assembling processes and reliable and stable work, so that the compressor can reliably run for a long time under the working condition close to isothermal compression.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a water-lubricated bearing and a compressor with the water-lubricated bearing.
Background
The water lubricated bearings are classified into radial bearings and thrust bearings according to the difference of bearing loads. In the conventional water lubricated machine, when the rotating member has both radial load and axial load, it is necessary to arrange two radial bearings and one thrust bearing, respectively, to bear the load. When the rotary machine is started or stopped or reversed, the direction of the axial load is suddenly changed, so that the thrust water lubrication bearing is also required to be arranged for protection. I.e. a rotating part with both radial and axial load, requires 3-4 water lubricated bearings to ensure reliable operation of the machine. However, when the number of the bearings is too large, not only the economic cost is increased, but also the rotating machinery structure tends to be complex, and the requirements on the machining precision and the production process are more severe.
A twin screw compressor is a rotary machine that has both radial and axial loads, and the axial loads are likely to be reversed. Therefore, 4 bearings are required to be arranged on each of the male screw and the female screw to ensure reliable operation of the compressor. In water-lubricated twin-screw compressors, the sliding bearings require a large bearing surface to ensure reliable operation due to the low viscosity of the water. The requirement of 4 bearings of the female screw and the male screw makes the structure of the water lubrication double screw compressor complex, and has higher requirements on processing precision and manufacturing process and low production efficiency. In addition, in the aspect of protection of the spiral end surfaces of the female screw and the male screw, the traditional double-screw compressor only has the reverse thrust bearing capable of protecting the exhaust spiral end surface from abrasion, and the suction spiral end surface only has a larger gap reserved for protection. However, when the abrasion loss of the thrust bearing exceeds the reserved gap of the suction end, the suction spiral end face still has the risk of abrasion. There is currently no effective solution other than shortening the maintenance period.
Disclosure of Invention
The technical problem solved by the invention is to provide the water lubrication bearing which can integrate the functions of the radial bearing, the thrust bearing and the reverse thrust bearing into a whole.
The technical scheme adopted for solving the technical problems is as follows: the water lubrication bearing comprises a revolution structure, wherein the revolution structure comprises a first revolution body positioned at the front part and a second revolution body positioned at the rear part, the diameter of the first revolution body is larger than that of the second revolution body, one side surface, far away from the second revolution body, of the first revolution body is a first sliding surface, the opposite surface of the first sliding surface is a third sliding surface, the inner side surface of the second revolution body is an inner cylindrical surface, the outer side surface of the second revolution body is a second sliding surface, one side surface, far away from the first revolution body, of the second revolution body is an end surface, and the middle part of the first revolution body is provided with a screw counter bore and a screw through hole.
Further is: the first sliding surface, the second sliding surface and the third sliding surface are made of hard metal materials or self-lubricating nonmetallic materials, the first sliding surface, the second sliding surface and the third sliding surface and the sliding surface opposite to the first sliding surface, the second sliding surface and the third sliding surface form a self-lubricating nonmetallic/hard metal pair grinding pair, and the surface of the self-lubricating nonmetallic materials is provided with a water passing groove.
The invention also discloses a compressor with the water lubrication bearing, which comprises an air suction end body, a shell, an air exhaust end body and an air exhaust end cover which are sequentially connected, wherein a male screw and a female screw which are meshed with each other are arranged in the shell, a male thrust disc and a female thrust disc are fixed on the air suction end body, water inlet holes are formed in the centers of the male thrust disc and the female thrust disc, two water inlet holes which respectively correspond to the water inlet holes are formed in the air suction end body, a male air suction end water lubrication bearing and a male air exhaust end water lubrication bearing are respectively fixedly connected to the front end and the rear end of the male screw, and a female air suction end water lubrication bearing and a female air exhaust end water lubrication bearing are respectively fixedly connected to the two sides of the female screw;
The male side suction end water lubrication bearing comprises a revolving body structure, wherein the revolving body structure comprises a first revolving body positioned at the front part and a second revolving body positioned at the rear part, the diameter of the first revolving body is larger than that of the second revolving body, one side surface of the first revolving body far away from the second revolving body is a first sliding surface, the opposite surface of the first sliding surface is a third sliding surface, the inner side surface of the second revolving body is an inner cylindrical surface, the outer side surface of the second revolving body is a second sliding surface, and a screw counter bore and a screw through hole are formed in the middle of the first revolving body;
the structure of the male side air suction end water lubrication bearing is the same as that of the female side air suction end water lubrication bearing.
Further is: the machine shell is fixedly provided with a fixed block, and the end surfaces of the two sides of the fixed block respectively form a grinding pair with the spiral surfaces of the suction sides of the male screw and the female screw.
Further is: the first sliding surface, the second sliding surface and the third sliding surface are made of hard metal materials or self-lubricating nonmetallic materials, the first sliding surface, the second sliding surface and the third sliding surface and the sliding surface opposite to the first sliding surface, the second sliding surface and the third sliding surface form a self-lubricating nonmetallic/hard metal pair grinding pair, and the surface of the self-lubricating nonmetallic materials is provided with a water passing groove.
Further is: a male side exhaust end face gap adjusting ring is arranged between the male side air suction end water lubrication bearing and the male screw, and a female side exhaust end face gap adjusting ring is arranged between the female side air suction end water lubrication bearing and the female screw.
The beneficial effects of the invention are as follows: the bearing effectively solves the problem that the existing water lubrication sliding bearing cannot bear radial force and axial force at the same time, integrates a reverse thrust function, integrates three parts with different functions in the traditional water lubrication rotary machine, effectively improves the compactness of the water lubrication rotary machine, improves the running reliability of the machine, and greatly reduces the cost of later maintenance.
The invention provides a water lubrication double-screw compressor, which adopts the water lubrication bearing, can bear radial and axial loads simultaneously, has a reverse thrust function, and effectively protects the exhaust end surfaces of female and male screws. The compressor is provided with the fixed block at the suction end of the female screw and the male screw simultaneously, so that the suction end face of the female screw and the male screw can be effectively protected. Compared with the prior art, the compressor effectively simplifies the structure, improves the compactness of the whole machine, has simple manufacturing and assembling processes and improves the production efficiency, simultaneously forms the bidirectional protection of female and male screws, improves the reliability, effectively prolongs the maintenance period, reduces the maintenance cost, and can ensure that the compressor can reliably run for a long time under the working condition of approaching isothermal compression.
Drawings
Fig. 1 is a cross-sectional view of a water lubricated bearing of a rotary structure in accordance with the present invention.
Fig. 2 is a cross-sectional view of a water lubricated twin screw compressor in accordance with the present invention.
Marked in the figure as: the first sliding surface 1, the second sliding surface 2, the third sliding surface 3, the inner cylindrical surface 4, the screw counter bore 5, the screw through hole 6, the end surface 7, the air suction end body 8, the shell 9, the air discharge end body 10, the air discharge end cover 11, the male screw 12, the female screw 13, the male air suction end water lubrication bearing 14, the female air suction end water lubrication bearing 15, the male thrust disc 16, the female thrust disc 17, the male air discharge end surface gap adjustment ring 18, the female air discharge end surface gap adjustment ring 19, the fixed block 20, the male air discharge end water lubrication bearing 21, the female air discharge end water lubrication bearing 22, the round nut 23, the shaft seal 24 and the gland 25.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
The water lubrication bearing as shown in fig. 1 comprises a revolving body structure, wherein the revolving body structure comprises a first revolving body positioned at the front part and a second revolving body positioned at the rear part, the diameter of the first revolving body is larger than that of the second revolving body, one side surface of the first revolving body, which is far away from the second revolving body, is a first sliding surface 1, the opposite surface of the first sliding surface 1 is a third sliding surface 3, the inner side surface of the second revolving body is an inner cylindrical surface 4, the outer side surface of the second revolving body is a second sliding surface 2, the one side surface of the second revolving body, which is far away from the first revolving body, is an end surface 7, a screw counter bore 5 and a screw through hole 6 are arranged in the middle of the first revolving body, the water lubrication bearing is not limited to single materials, and can be made of various materials through injection molding, casting, coating and the like, the first sliding surface 1, the second sliding surface 2 and the third sliding surface 3 can be made of hard metal or self-lubricating nonmetallic materials, the first sliding surface 1 is an axial thrust surface and has the function of a thrust bearing, if the self-lubricating nonmetallic materials, and the surface should be provided with a water trough; the second sliding surface 2 is a radial sliding surface and has the function of a radial bearing; the third sliding surface 3 is an axial thrust surface and has a reverse thrust function, and if the third sliding surface is made of self-lubricating nonmetallic materials, the surface of the third sliding surface should be provided with a water trough, and the inner cylindrical surface 4 is matched with the rotating shaft; said end face 7 is used for axially positioning the water lubricated bearing on the rotating shaft; the screw counter bore 5 and the screw through hole 6 are used for penetrating a screw to lock the water lubrication bearing on the rotating shaft. The water lubrication bearing can be a single part integrating the first sliding surface 1, the second sliding surface 2 and the third sliding surface 3, and can also be a combination of two or three parts.
The invention also discloses a compressor with water lubrication bearings, as shown in fig. 2, which comprises a suction end body 8, a shell 9, a discharge end body 10 and a discharge end cover 11 which are sequentially connected, wherein a male screw rod 12 and a female screw rod 13 which are meshed with each other are arranged in the shell 9, a male thrust disc 16 and a female thrust disc 17 are fixed on the suction end body 8, the male thrust disc 16 and the female thrust disc 17 are locked on the suction end body 8 by screws, water inlet holes are formed in the centers of the male thrust disc 16 and the female thrust disc 17, two water inlet holes which respectively correspond to the water inlet holes are formed in the suction end body 8, a male suction end water lubrication bearing 14 and a male discharge end water lubrication bearing 21 are respectively fixedly connected to the front end and the rear end of the male screw rod 12, and a female suction end water lubrication bearing 15 and a female discharge end water lubrication bearing 22 are respectively fixedly connected to the two sides of the female screw rod 13; the novel rotary structure comprises a rotary structure body, wherein the rotary structure body comprises a first rotary body positioned at the front part and a second rotary body positioned at the rear part, the diameter of the first rotary body is larger than that of the second rotary body, one side surface, far away from the second rotary body, of the first rotary body is a first sliding surface 1, the opposite surface of the first sliding surface 1 is a third sliding surface 3, the inner side surface of the second rotary body is an inner cylindrical surface 4, the outer side surface of the second rotary body is a second sliding surface 2, one side surface, far away from the first rotary body, of the second rotary body is an end surface 7, and the middle part of the first rotary body is provided with a screw counter bore 5 and a screw through hole 6. The structure of the male air suction end water lubrication bearing 14 and the female air suction end water lubrication bearing 15 is the same, the male air discharge end water lubrication bearing 21 and the female air discharge end water lubrication bearing 22 are common cylindrical bearings, the male thrust disc 16 and the first sliding surface 1 of the male air suction end water lubrication bearing 14 form a relative sliding surface, and the female thrust disc 17 and the first sliding surface 1 of the female air suction end water lubrication bearing 15 form a relative sliding surface. Self-lubricating nonmetallic/hard metal pair grinding pairs should be formed between the opposite sliding surfaces. When the male thrust disc 16 and the female thrust disc 17 are made of self-lubricating nonmetallic materials, radial water passing grooves should be formed on the surface opposite to the water lubrication bearings, the second sliding surface 2 of the male air suction end water lubrication bearing 14 and the inner cylindrical surface 4 of the female screw 12 side of the casing 9 are opposite sliding surfaces, the second sliding surface 2 of the female air suction end water lubrication bearing 15 and the inner cylindrical surface 4 of the female screw 13 side of the casing 9 are opposite sliding surfaces, the third sliding surface 3 of the male air suction end water lubrication bearing 14 and the left end surface 7 of the casing 9 are opposite sliding surfaces, and the third sliding surface 3 of the female air suction end water lubrication bearing 15 and the left end surface 7 of the casing 9 are opposite sliding surfaces. The inner cylindrical surface 4 of the exhaust end body 10 positioned on the side of the male screw 12 and the outer cylindrical surface 2 of the exhaust end water lubrication bearing 21 on the male side are opposite sliding surfaces, and the inner cylindrical surface 4 of the exhaust end body 10 positioned on the side of the female screw 13 and the outer cylindrical surface 2 of the nonmetallic part of the exhaust end water lubrication bearing 22 on the female side are opposite sliding surfaces. The self-lubricating nonmetallic/hard metal pair grinding pair should be formed between the above-mentioned opposite sliding surfaces, the water lubrication bearing 14 of the suction end of the male side and the water lubrication bearing 15 of the suction end of the female side are assembled on the male screw 12 and female screw 13 respectively, lock through the screw, the water lubrication bearing 21 of the discharge end of the male side is locked on the discharge end shaft of the male screw 12 through the round nut 23, the water lubrication bearing 22 of the discharge end of the female screw 13 is locked on the discharge end shaft of the female screw 13 through the gland 25 with the screw, the shaft seal 24 is fixed on the discharge end cover 11 through the interference fit mode, the shaft seal 24 can realize the seal of the protruding shaft of the male screw 12, the compressor adopts the water lubrication bearing 14 of the suction end of the male side and the water lubrication bearing 15 of the suction end of the female side, can bear radial and axial load at the same time, the reverse thrust function is provided at the same time, the structure is effectively simplified, the manufacturing and assembly process is simple, and the production efficiency is improved.
On the basis of the above, as shown in fig. 2, a fixed block 20 is fixed on the casing 9, the two side end faces 7 of the fixed block 20 are respectively paired with the suction side screw surfaces of the male screw 12 and the female screw 13 to form a grinding pair, and when the suction end faces 7 of the male screw 12 and the female screw 13 are made of hard metals, the fixed block 20 is made of self-lubricating nonmetallic materials. The fixed block 20 not only forms an axial air suction hole, but also can protect the air suction side spiral end face 7 of the male screw rod 12 and the female screw rod 13 from abrasion when the thrust disc and the female thrust disc 17 are excessively worn, the thickness of the fixed block 20 can be freely selected according to the clearance between the air suction end face 7 of the compressor and the air delivery quantity, and the fixed block, the water lubrication bearing 14 at the air suction end of the male side and the water lubrication bearing 15 at the air suction end of the female side of the compressor simultaneously form bidirectional protection for the female screw rod 13 and the male screw rod 12, thereby improving the reliability, effectively prolonging the maintenance period, reducing the maintenance cost and enabling the compressor to reliably run for a long time under the working condition close to isothermal compression.
On the basis of the above, as shown in fig. 2, a male side exhaust end face gap adjusting ring 18 is arranged between the male side air suction end water lubrication bearing 14 and the male screw 12, a female side exhaust end face gap adjusting ring 19 is arranged between the female side air suction end water lubrication bearing 15 and the female screw 13, and the adjusting ring is used for adjusting the gap of the screw exhaust end face 7 and ensuring the stable operation of the male screw 12 and the female screw 13.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (4)
1. Compressor with water lubricated bearing, including the end body (8) that breathes in, casing (9), exhaust end body (10) and exhaust end cover (11) that connect gradually, casing (9) inside male screw (12) and the female screw (13) that are provided with intermeshing, be fixed with on the end body (8) of breathing in positive side thrust dish (16) and female side thrust dish (17), positive side thrust dish (16) and female side thrust dish (17) center all are provided with the inlet opening, be provided with two inlet openings that correspond with the inlet opening respectively on the end body (8) of breathing in, its characterized in that: the front end and the rear end of the male screw rod (12) are respectively and fixedly connected with a male air suction end water lubrication bearing (14) and a male air discharge end water lubrication bearing (21), two sides of the female screw rod (13) are respectively and fixedly connected with a female air suction end water lubrication bearing (15) and a female air discharge end water lubrication bearing (22), and the male air discharge end water lubrication bearing (21) and the female air discharge end water lubrication bearing (22) are cylindrical bearings;
The male side suction end water lubrication bearing (14) comprises a revolution structure, the revolution structure comprises a first revolution body positioned at the front part and a second revolution body positioned at the rear part, the diameter of the first revolution body is larger than that of the second revolution body, one side surface of the first revolution body far away from the second revolution body is a first sliding surface (1), the opposite surface of the first sliding surface (1) is a third sliding surface (3), the inner side surface of the second revolution body is an inner cylindrical surface (4), the outer side surface of the second revolution body is a second sliding surface (2), one side surface of the second revolution body far away from the first revolution body is an end surface (7), and a screw counter bore (5) and a screw through hole (6) are formed in the middle of the first revolution body;
The structure of the male suction end water lubrication bearing (14) is the same as that of the female suction end water lubrication bearing (15).
2. The compressor with water lubricated bearings according to claim 1, wherein: the machine shell (9) is fixedly provided with a fixed block (20), and two side end faces (7) of the fixed block (20) are respectively formed into a grinding pair with the suction side spiral surfaces of the male screw (12) and the female screw (13).
3. The compressor with water lubricated bearings according to claim 1, wherein: the first sliding surface (1), the second sliding surface (2) and the third sliding surface (3) are made of hard metal materials or self-lubricating nonmetallic materials, the first sliding surface (1), the second sliding surface (2) and the third sliding surface and the sliding surface opposite to the first sliding surface and the second sliding surface form a self-lubricating nonmetallic/hard metal pair grinding pair, and the surface of the self-lubricating nonmetallic material is provided with a water passing groove.
4. The compressor with water lubricated bearings according to claim 1, wherein: a male exhaust end face gap adjusting ring (18) is arranged between the male suction end water lubrication bearing (14) and the male screw (12), and a female exhaust end face gap adjusting ring (19) is arranged between the female suction end water lubrication bearing (15) and the female screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320240.XA CN108006065B (en) | 2017-12-12 | 2017-12-12 | Water-lubricated bearing and compressor with water-lubricated bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320240.XA CN108006065B (en) | 2017-12-12 | 2017-12-12 | Water-lubricated bearing and compressor with water-lubricated bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108006065A CN108006065A (en) | 2018-05-08 |
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| CN109058103A (en) * | 2018-09-25 | 2018-12-21 | 宁波鲍斯能源装备股份有限公司 | Water jet helical-lobe compressor |
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| CN108006065A (en) | 2018-05-08 |
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