阅读说明：本技术 一种自生负压定量吸脂的储脂筒 (Fat storage cylinder capable of quantitatively sucking fat by self-generated negative pressure ) 是由 贺勍 于 2018-08-09 设计创作，主要内容包括：一种自生负压定量吸脂的储脂筒,它是自动供吸脂润滑系统中的部件。它与单柱塞多点递进式定量供脂的润滑泵组合应用,促进了现有技术中的只供不排的自动润滑系统向供脂加吸脂合一的功能升级换代。该储脂筒由内置活塞将储脂桶分割成储脂腔和吸脂腔,通过设置在吸脂腔的弹簧的压缩能在储脂腔出脂量的控制下转换为负压吸脂能,并依据储脂腔的出脂量和活塞上下腔的面积比定量吸出轴承内的陈旧润滑脂。它既能为供脂润滑泵提供储脂容腔,向供脂润滑泵充分供脂,又可与供脂同时吸出轴承上排脂点附近的少于供脂量的、确定量的原有老化的和被污染的润滑脂,改善轴承内部的润滑环境和润滑脂的清洁度及流动性,延长摩擦副的保养周期并节省费用。(A grease storage cylinder for quantitative grease suction by self-generated negative pressure is a component in a system for automatically supplying grease for lubrication. The grease supply device is combined with a lubricating pump for single-plunger multi-point progressive quantitative grease supply, and promotes the upgrading of the function of integrating grease supply and grease suction of an automatic lubricating system which only supplies and does not discharge in the prior art. The grease storage barrel is divided into a grease storage cavity and a grease suction cavity by an internal piston, the compression energy of a spring arranged in the grease suction cavity is converted into negative pressure grease suction energy under the control of the grease discharge amount of the grease storage cavity, and the old lubricating grease in the bearing is quantitatively sucked out according to the grease discharge amount of the grease storage cavity and the area ratio of the upper cavity to the lower cavity of the piston. The grease storage cavity can be provided for the grease supply lubricating pump to supply grease to the grease supply lubricating pump fully, and the grease can be sucked out of the original aged and polluted lubricating grease which is less than the grease supply amount and is in a determined amount and close to a grease supply point on the bearing simultaneously with the grease supply, so that the cleanliness and the flowability of the lubricating grease in the bearing are improved, the maintenance period of a friction pair is prolonged, and the cost is saved.)

1. A fat storage cylinder for self-generated negative pressure quantitative fat absorption is mainly composed of a cylinder body (13), a piston (14), a spring (15), a lower cover (16), an upper cover (17) and a bolt (18); the method is characterized in that: the cylinder body (13) is assembled into a whole by a lower cover (16) and an upper cover (17) through a bolt (18), the coaxial large and small cylinders of the piston (14) are respectively arranged in the cylinder body inner hole of the cylinder body (13) and the guide hole of the upper cover (17), and the cylinder body (13) is divided into two independent closed containing cavities, namely a grease storage cavity and a grease suction cavity, through a sealing element; the spring (15) is arranged between the piston (14) and the upper cover (17) and has a preset precompression quantity; a grease suction joint mounting hole is formed in the top of the upper cover (17), and is communicated with a grease discharge port on the bearing through a pipeline when a parallel grease suction system is adopted; the working principle is as follows: in an initial state, the grease storage cavity is communicated with a grease suction port of a lubricating pump for single-plunger multi-point progressive quantitative grease supply; the grease suction cavity is communicated with all grease discharge ports on the bearing in parallel through pipelines; grease is injected by a grease injector through a grease injection nozzle on the lower cover (16), and the grease pushes the piston (14) to compress the spring (15) to a set position; the residual containing cavity in the grease suction cavity and all grease suction pipelines are completely filled with lubricating grease and then are connected and sealed, a lubricating system is started, when the grease discharging stroke of the lubricating pump returns to the original position, the lubricating grease required by the lubricating pump is sucked from the grease storage cavity, along with the flowing of the lubricating grease out of the grease storage cavity, a piston (14) moves downwards under the action of the stretching force of a spring (15), the containing cavity between the piston (14) and an upper cover (17) generates negative pressure, and the negative pressure is transferred to the original old lubricating grease in the bearing along with the grease suction pipelines and quantitatively sucked into the grease suction cavity; the fat suction amount is determined by the fat supply amount of the fat supply lubricating pump and the area ratio of the upper cavity to the lower cavity of the piston (14); the required negative pressure value is determined by the rigidity and the compression amount of the spring (15).

2. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the spring (15) is a tension spring and is installed between the lower cover (16) and the piston (14).

3. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the cylinder body (13) and the lower cover (16) are integrated and are in threaded connection with the upper cover (17).

4. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the cylinder body (13) and the upper cover (17) are integrated and are in threaded connection with the lower cover (16).

5. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the piston (14) is a coaxial line assembly.

6. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the piston (14) is a non-coaxial line assembly.

7. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the inner top of the upper cover (17) is of an inverted cone shape.

8. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the inner top of the upper cover (17) is arc-shaped.

9. The fat storage cylinder for self-generating negative pressure quantitative fat absorption according to claim 1, wherein: the inner top of the upper cover (17) is a plane type.

The technical field is as follows:

the invention relates to a fat storage cylinder for self-generating negative pressure quantitative fat suction. The grease storage cylinder is particularly suitable for wind generating sets and is also suitable for automatic lubricating systems applied to other heavy mechanical equipment and vehicles.

Secondly, background art:

in order to improve the service life, efficiency and energy conservation of heavy equipment, automatic lubricating systems are adopted in various heavy equipment. In an automatic lubricating system applied to the existing wind generating set, the automatic lubricating system mainly comprises an integrated grease supply unit and a distributor, and a grease storage cylinder is a necessary accessory on the integrated grease supply unit. The lubricating system has an important functional defect that only new lubricating grease can be injected into the bearing regularly and quantitatively according to loss, but the original old polluted lubricating grease containing scrap iron and various impurities in the bearing is retained in the bearing for a long time, and the old polluted lubricating grease and the polluted lubricating grease continuously participate in friction and abrasion of various moving surfaces in the bearing. Under the low-temperature working environment, the liquid resistance of the lubricating grease is greatly increased along with the aging and hardening of the lubricating grease, so that the efficiency of the bearing is reduced, and the work output of a main engine is reduced; on the other hand, the pressure of the injected grease is increased due to the blockage of the aged and hardened grease, and once the pressure of the injected grease is higher than the sealing pressure of the bearing sealing lip, the newly injected grease can not enter all the moving surfaces in the bearing and can flush the bearing sealing lip to overflow. This lack of functionality can lead to insufficient local grease in the bearing, accelerated wear of the surfaces of moving parts of the bearing, a reduction in the service life of the bearing and the efficiency of the complete machine, leakage and contamination of the nacelle. To prevent this, one has to shorten the maintenance period of the main machine and spend a large amount of manpower and material resources to clean the old grease inside the bearing in each maintenance period.

The invention is based on the prior art that the automatic lubricating system only can intermittently inject lubricating grease into the bearing according to loss, and the original old polluted lubricating grease containing scrap iron and various impurities is retained in the bearing for a long time, and the old polluted lubricating grease continuously participates in the friction of all moving surfaces in the bearing, thereby seriously harming the working reliability and the service life of all moving parts in the bearing.

The second of the invention is based on the automatic lubricating system in the prior art, which only can inject lubricating grease into the bearing discontinuously according to the loss, and the original aged and hardened lubricating grease blocks the movement of each moving part in the bearing, thereby reducing the efficiency of the bearing and reducing the emission of the effective power of the main engine.

The third invention is based on that the automatic lubricating system in the prior art can only inject the lubricating grease into the bearing discontinuously according to the loss, and the original aging and hardening lubrication block the smooth flow of the newly injected lubricating grease and form oil films at each clearance part in the bearing, thus leading to the lack of the lubricating grease supplied to the local part in the bearing.

The invention is based on the automatic lubricating system in the prior art that the lubricating grease can only be discontinuously injected into the bearing according to the loss, and the liquid resistance of the original aged and hardened lubricating grease is multiplied, so that the pressure of the injected lubricating grease is increased to break the sealing pressure of the sealing lip edge of the bearing and overflow, and the leakage pollutes the engine room.

The fifth invention is based on that the automatic lubrication system in the prior art can only inject lubricating grease into the bearing discontinuously according to the loss, the original aged and hardened lubricating grease can not be removed in time, in order to ensure the normal operation of the main machine, people only need to shorten the maintenance period of the main machine, and spend a large amount of manpower and material resources to clean the old lubricating grease in the bearing in each maintenance period.

Thirdly, the invention content:

the invention aims to develop a grease storage cylinder for self-generating negative pressure quantitative grease suction, which replaces a grease storage cylinder in an automatic lubrication system which only supplies grease but does not discharge in the prior art, is combined with the automatic lubrication system for application, and promotes the automatic lubrication system which only supplies grease but does not discharge in the prior art to upgrade and upgrade the function of integrating grease supply and grease suction. The grease storage cavity can be provided for the grease supply pump to ensure the grease supply to the grease supply pump fully, and the original aged and polluted lubricating grease which is less than the grease supply amount and is a determined amount and is near a grease supply point on the bearing can be sucked out synchronously with the grease supply, so that the cleanliness and the flowability of the lubricating grease in the bearing are effectively improved, and the maintenance period of a friction pair is prolonged.

The function principle of the fat storage cylinder for self-generating negative pressure quantitative fat suction is as follows: a piston is arranged in the grease storage barrel to divide the grease storage barrel into a grease storage cavity and a grease suction cavity which are sealed independently, the grease storage cavity is connected with a grease suction port of a lubricating pump, and the grease suction cavity is connected with a grease discharging point of a bearing; under the condition that all be full of lubricating grease in this two chambeies and the pipeline, go out the control of fat volume through storing up the fat chamber and divide the compression energy of the spring of release setting at the liposuction chamber to convert negative pressure liposuction ability into, promptly: through the space released by the grease discharging amount of the grease storage cavity, the spring force pushes the piston to move downwards to generate negative pressure in the grease suction cavity, the negative pressure is transmitted to a grease discharge port of the bearing through the lubricating grease in the pipeline, and the old lubricating grease in the bearing is quantitatively sucked out according to the grease discharging amount of the grease storage cavity and the area ratio of the upper cavity to the lower cavity of the piston.

The solution of the invention is: a self-generating negative pressure quantitative fat absorption fat storage cylinder is mainly composed of a cylinder body 13, a piston 14, a spring 15, a lower cover 16, an upper cover 17 and a bolt 18; the method is characterized in that: the cylinder body 13, the lower cover 16 and the upper cover 17 are assembled into a whole through a bolt 18, the coaxial large and small cylinders of the piston 14 are respectively arranged in the cylinder body inner hole of the cylinder body 13 and the guide hole of the upper cover 17, and the cylinder body 13 is divided into two independent closed containing cavities, namely a grease storage cavity and a grease suction cavity, through a sealing element; the spring 15 is arranged between the piston 14 and the upper cover 17 and has a preset precompression; a grease suction joint mounting hole is formed in the top of the upper cover 17, and when a parallel grease suction system is adopted, the grease suction joint mounting hole is directly communicated with a grease discharging port on a bearing through a pipeline; the working principle is as follows: in an initial state, the grease storage cavity is communicated with a grease suction port of a lubricating pump for single-plunger multi-point progressive quantitative grease supply; the grease suction cavity is communicated with all grease discharge ports on the bearing in parallel through pipelines; grease is injected by a grease injector through a grease injection nozzle on the lower cover 16, and the grease pushes the piston 14 to compress the spring 15 to a set position; the residual containing cavity in the grease suction cavity and all grease suction pipelines are completely filled with lubricating grease and then are connected and sealed, a lubricating system is started, when the grease discharging stroke of the lubricating pump returns to the original position, the lubricating grease required by the lubricating pump is sucked from the grease storage cavity, along with the outflow of the lubricating grease from the grease storage cavity, the piston 14 moves downwards under the action of the tensile force of the spring 15, the containing cavity between the piston 14 and the upper cover 17 generates negative pressure, and the negative pressure is transferred to the original old lubricating grease in the bearing along with the lubricating grease in the grease suction pipelines and quantitatively sucks the old lubricating grease into the grease suction cavity; the grease suction quantity is determined by the grease supply quantity of the lubricating pump and the area ratio of the upper cavity to the lower cavity of the piston 14; the required value of the negative pressure is determined by the stiffness and the amount of compression of the spring 15.

When the progressive type grease suction system is adopted, the grease suction joint hole at the top of the upper cover 17 is communicated with the grease outlet of the single-plunger multipoint progressive type quantitative grease suction control valve, and the grease suction ports of the single-plunger multipoint progressive type quantitative grease discharge control valve are respectively connected with the grease discharge ports on the bearing.

The spring 15 of the present invention may be a tension spring installed between the lower cap 16 and the piston 14.

The piston 14 of the invention can be an integrated stepped cylinder with the same axis, can also be an assembled stepped cylinder with the same axis, and can also be assembled by a single or a plurality of guide rods with non-coaxial axes, which is used for adjusting the area ratio of the upper cavity and the lower cavity of the piston 14 and increasing the guide length of the piston 14.

The inner top of the upper cover 17 of the invention can be an inner conical top or an inner circular top, which is used for adjusting the negative pressure value of the fat suction port.

Fourthly, explanation of the attached drawings:

FIG. 1 is a structural diagram of a fat storage cylinder for quantitative fat absorption under self-generated negative pressure according to the present invention.

The fifth embodiment is as follows:

the embodiment of the invention is as follows: in an initial state, the grease storage cavity is communicated with a grease suction port of the lubricating pump; the grease suction cavity is communicated with all grease discharge ports on the bearing in parallel through pipelines; grease is injected by a grease injector through a grease injection nozzle on the lower cover 16, and the grease pushes the piston 14 to compress the spring 15 to a set position; the residual containing cavity in the grease suction cavity and all grease suction pipelines are completely filled with lubricating grease and then are connected and sealed, a lubricating system is started, when the grease discharging stroke of the grease supply lubricating pump returns to the original position, the grease supply lubricating pump sucks required lubricating grease from the grease storage cavity, along with the flowing of the lubricating grease out of the grease storage cavity, the piston 14 moves downwards under the action of the tensile force of the spring 15, the containing cavity between the piston 14 and the upper cover 17 generates negative pressure, and the negative pressure is transferred to the original old lubricating grease in the bearing along with the lubricating grease in the grease suction pipelines and quantitatively sucks the old lubricating grease into the grease suction cavity.