阅读说明：本技术 一种多点递进式定量供脂的润滑泵 (Lubricating pump of grease is supplied to multiple spot progressive ration ) 是由 贺勍 于 2018-08-09 设计创作，主要内容包括：一种多点递进式定量供脂的润滑泵,由一个柱塞组合了供脂泵与分配器的功能,它完全可以取代现有技术中的供脂泵与分配器的组合。它始终保持一片分配器的液阻,有效地克服了多片分配器系统的液阻大、可靠性差和能耗大的弊端,充分保证低温工况下向各个润滑点稳定地供给润滑脂,并集合了串并联系统的优势。它既能大幅地降低了系统液阻和能耗,又能保证了供脂泵在其额定压力和超调压力作用下的充分注脂,用户只需选择排脂点数及排量与主机润滑点及排量一致的本发明,通过管道连接即可。它在现有自动润滑系统中去除了分配器,大幅度地提高了自动润滑系统的低温可靠性和润滑泵的容积效率并减少了系统的能耗,是对现有技术的一次重大创新。(A lubricating pump for multi-point progressive quantitative grease supply is composed of a plunger, a grease pump and a distributor. The lubricating grease distributor always keeps the liquid resistance of one distributor, effectively overcomes the defects of large liquid resistance, poor reliability and large energy consumption of a multi-distributor system, fully ensures that lubricating grease is stably supplied to each lubricating point under the low-temperature working condition, and integrates the advantages of a series-parallel system. The invention can not only greatly reduce the hydraulic resistance and energy consumption of the system, but also ensure the sufficient grease injection of the grease supply pump under the action of the rated pressure and the overshoot pressure, and a user only needs to select the grease discharging point number and the grease discharging capacity consistent with the lubricating point and the grease discharging capacity of the main engine and connect the grease supply pump through a pipeline. The distributor is removed from the existing automatic lubrication system, so that the low-temperature reliability of the automatic lubrication system and the volumetric efficiency of a lubrication pump are greatly improved, the energy consumption of the system is reduced, and the automatic lubrication system is a great innovation of the prior art.)

1. A multi-point progressive quantitative grease supply lubricating pump is mainly formed by combining a pump body (1), a plunger (2), a grease discharge one-way valve steel ball (3), a grease discharge one-way valve seat (5), a grease suction one-way valve upper seat (6), a grease suction one-way valve steel ball (7), a grease suction one-way valve lower seat (8), springs (9, 10, 11), a spring seat (12) and the like; the method is characterized in that: a central grease discharging hole and an annular undercut groove are formed in the right part of the plunger (2), the annular undercut groove is communicated with the central grease discharging hole through a radial hole, and a grease discharging one-way valve is arranged at the right end of the plunger (2); two grease discharging holes are formed in the pump body (1) and are communicated with plunger holes of the two grease discharging holes, the diameter of each grease discharging hole in the pump body (1) is equal to the width of a cutting groove in the plunger (2), and the sealing length of two adjacent grease discharging holes in the pump body (1) is slightly smaller than the width of the cutting groove in the plunger (2); the plunger (2) is fully communicated with the leftmost grease discharging hole on the pump body (1) at the initial position; the working principle is as follows: in an initial state, lubricating grease is filled in a cavity between the right end of a plunger (2) on a pump body (1) and a spring seat (12), an upper undercut groove of the plunger (2) is fully communicated with a leftmost grease discharging hole on the pump body (1), when a power device pushes the plunger (2) to move rightwards, the space of the cavity between the right end of the plunger (2) on the pump body (1) and the spring seat (12) is occupied, the same volume of lubricating grease is discharged to a first lubricating point through a central hole and the undercut groove on the plunger (2), the plunger (2) continues to move rightwards, the undercut groove on the plunger (2) gradually completes switching and grease supply from the leftmost grease discharging hole to a second grease discharging hole on the pump body (1), and progressive quantitative grease supply to the lubricating point is realized; when the plunger (2) is moved rightwards, the grease discharging check valve steel ball (3) is pressed tightly under the action of the spring (9) to close the flow channel of the grease discharging check valve seat (5), the plunger (2) moves leftwards under the action of the spring (11), along with the left movement of the plunger (2), a containing cavity between the right end of the plunger (2) and the spring seat (12) on the pump body (1) is enlarged and generates negative pressure, lubricating grease is pushed away from the grease sucking check valve upper seat (6) to be sucked, and preparation is made for the next cycle.

2. The multi-point progressive quantitative grease supply lubrication pump according to claim 1, wherein:

the appearance is designed to be plug-in type, and the return spring (11) of the plunger (2) can be designed to be external.

3. The multi-point progressive quantitative grease supply lubrication pump according to claim 1, wherein:

when the power device is an electric push rod, the plunger (2) is directly pushed and pulled by the push rod after the spring (11) is removed.

4. The multi-point progressive quantitative grease supply lubrication pump according to claim 1, wherein:

an annular undercut groove is arranged at the joint of the grease discharging hole on the pump body (1) and the plunger hole thereof.

5. The multi-point progressive quantitative grease supply lubrication pump according to claim 1, wherein:

different grease discharging holes are arranged on the pump body (1), and a plunger (2) and a power device with corresponding strokes are configured.

The technical field is as follows:

the invention relates to a lubricating pump for multi-point progressive quantitative grease supply. The lubricating pump 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 prolong the service life and efficiency of heavy equipment, save energy and protect environment, various heavy equipment and vehicles adopt an automatic lubricating system. The automatic lubricating system applied to the existing wind generating set and various heavy vehicles mainly comprises an integrated grease supply unit and a distributor, wherein the distributor is in progressive serial connection and parallel connection. Their main disadvantages are: the liquid resistance of the serial progressive distributor is too large, particularly under a low-temperature working environment, the liquid resistance is multiplied, and the fat supply amount is usually greatly reduced; the parallel distributor is a small spring type energy accumulator, the pressure of the lubricating grease is reduced when the lubricating grease is injected into the friction pair, the pressure is reduced when the compression force of the spring is extended, the effect that the grease supply unit can continuously apply pressure according to the load liquid resistance cannot be exerted, and the lubricating grease is difficult to be injected into a small clearance part in the friction pair to form an oil film; the defects can cause the lack of the lubricating grease at the local part in the bearing, so that the problem of insufficient local lubrication of the whole bearing occurs, and the service life of the whole bearing is influenced.

The invention is based on the fact that the automatic lubricating system in the prior art must be composed of an integrated grease supply unit and a distributor, the liquid resistance of a widely applied progressive distributor is too large, and particularly for the automatic lubricating system with more lubricating points in heavy equipment, the working reliability of the system is seriously damaged.

The invention is based on the other hand that the automatic lubricating system in the prior art must be composed of an integrated grease supply unit and a distributor, the parallel distributor is a small spring-type energy accumulator, the pressure for injecting the lubricating grease into the friction pair is reduced, the pressure is reduced when the spring compression force is extended, the effect that the grease supply unit can continuously apply pressure according to the load liquid resistance cannot be exerted, the lubricating grease is difficult to be injected into a small gap part in the friction pair to form an oil film, and thus the local lubricating grease in the bearing is insufficient.

The third invention is based on that the pressure loss of the progressive distributor in the prior art is too large, and the use requirement of the main engine can be met only by improving the working pressure of the system. For the positive displacement plunger pump of filling and feeding grease in the prior art, the sealing length of the high-pressure and low-pressure cavities is increased from zero along with the stroke of the plunger, and the improvement of the pressure difference of the high-pressure end and the low-pressure end of the sealing type and the sealing pair of the plunger and the cylinder body with the same processing precision inevitably leads to the reduction of the volume efficiency and the service life of the sealing type and the sealing pair of the plunger and the cylinder body.

The invention is based on the fact that the energy consumption of the progressive distributor in the prior art is too high, and the cost of the main machine is certainly increased and the service life of the main machine is reduced if a mode of increasing the energy consumption is adopted for mobile equipment such as high-altitude limited energy supply equipment and vehicles which rely on a storage battery to provide energy.

Thirdly, the invention content:

the invention aims to develop a single-plunger multi-point progressive quantitative grease supply lubricating pump without a distributor, which replaces the combination of a grease supply unit and a distributor in the prior art. The lubricating system can effectively overcome the defects of large liquid resistance, poor reliability, large energy consumption and the like of the currently used lubricating system, ensures that lubricating grease is supplied to each lubricating point under the low-temperature working condition, and integrates the advantages of a series-parallel system.

The invention relates to a multipoint progressive quantitative grease supply lubricating pump, which combines the functions of a grease supply pump and a distributor by a plunger, greatly reduces the hydraulic resistance and energy consumption of a system, ensures the sufficient grease injection of a grease supply unit under the rated pressure and the overshoot pressure, and can be realized by selecting the grease discharging point number and the grease discharging capacity consistent with the lubricating point and the grease discharging capacity of a main machine and connecting the grease supply unit and the grease supply unit through pipelines. The distributor is removed from the automatic lubricating system, so that the low-temperature working condition reliability of the automatic lubricating system and the volumetric efficiency of the lubricating pump are greatly improved, the energy consumption of the system is reduced, and the automatic lubricating system is a great innovation of the prior art.

The invention discloses a method for realizing single-plunger multipoint progressive quantitative fat supply, which comprises the following steps: a plunger piston and a grease discharging one-way valve arranged at the right end of the plunger piston are used as the plunger piston of the space-occupying plunger piston pump, and the plunger piston and the pump body are combined into the space-occupying plunger piston grease supply pump; the same plunger piston, a central grease discharging hole arranged in the right end body of the plunger piston, a cutting groove on the outer diameter and a communicating flow passage of the cutting groove are used as valve cores of the multipoint progressive quantitative grease supply control valve, the pump body is provided with the grease discharging holes at corresponding intervals and has the function of a valve body, and the grease discharging holes are combined with the plunger piston to generate the multipoint progressive quantitative grease supply control valve; under the condition that all flow passages and pipelines are filled with lubricating grease, when the electric push rod pushes the plunger piston rightwards, the plunger piston continuously occupies the space of a containing cavity between the right end of the plunger piston and the spring seat on the pump body by virtue of the sealing of the grease suction one-way valve, the lubricating grease is squeezed to push the grease discharge one-way valve to flow through the central grease discharge hole in the right end body of the plunger piston, the undercut groove, the flow passages and the flow passages communicated with the flow passages on the pump body, and then the lubricating grease flows to the grease injection hole on the bearing through the pipeline, and new lubricating grease is quantitatively injected into the bearing; along with the movement of the plunger, the undercut groove which is arranged on the outer diameter of the plunger and communicated with the central hole of the plunger completes the switching of different grease discharging holes on the pump body and the quantitative grease supply. When the plunger is pulled leftwards after the rightward grease supply stroke is finished, the grease discharging one-way valve seals the containing cavity between the upper spring seat of the pump body and the plunger, the containing cavity between the upper spring seat of the pump body and the plunger is continuously enlarged and generates negative pressure, and lubricating grease in the grease storage cylinder pushes away the grease suction sheet and is sucked into the containing cavity. The supply of grease per point is the product of the cross-sectional area of the plunger times the diameter of each grease suction hole in the cylinder.

The solution of the invention is: the lubricating pump for multi-point progressive quantitative grease supply is mainly formed by combining a pump body 1, a plunger 2, a grease discharging one-way valve steel ball 3, a grease discharging one-way valve seat 5, a grease sucking one-way valve upper seat 6, a grease sucking one-way valve steel ball 7, a grease sucking one-way valve lower seat 8, springs 9, 10 and 11, a spring seat 12 and the like; the method is characterized in that: a central grease discharging hole and an annular undercut groove are formed in the right part of the plunger 2, the annular undercut groove is communicated with the central grease discharging hole through a radial hole, and a grease discharging one-way valve is arranged at the right end of the plunger 2; two grease discharging holes are formed in the pump body 1 and are communicated with plunger holes of the two grease discharging holes, the diameter of each grease discharging hole in the pump body 1 is equal to the width of a cutting groove in the plunger 2, and the sealing length of the two adjacent grease discharging holes in the pump body 1 is slightly smaller than the width of the cutting groove in the plunger 2; the undercut groove on the plunger 2 is fully communicated with the leftmost grease discharging hole on the pump body 1 at the initial position; the working principle is as follows: in an initial state, lubricating grease is filled in a cavity between the right end of a plunger 2 on a pump body 1 and a spring seat 12, an undercut groove on the plunger 2 is fully communicated with a leftmost grease discharging hole on the pump body 1, when a power device pushes the plunger 2 to move rightwards, the space of the cavity between the right end of the plunger 2 on the pump body 1 and the spring seat 12 is occupied, the same volume of lubricating grease is discharged to a first lubricating point through a central hole and the undercut groove on the plunger 2, the plunger 2 continues to move rightwards, the undercut groove on the plunger 2 gradually completes switching and grease supply from the leftmost grease discharging hole to a second grease discharging hole on the pump body 1, and progressive quantitative grease supply to the lubricating point is realized; the grease supply amount of each lubricating point is the product of the cross section of the plunger 2 and the diameter of the grease hole on the pump body 1; when the plunger 2 moves rightwards, the grease discharging one-way valve steel ball 3 is pressed tightly under the action of the spring 9 to close the flow channel of the grease discharging one-way valve seat 5, the plunger 2 moves leftwards under the action of the spring 11, along with the left movement of the plunger 2, a negative pressure is generated in a containing cavity between the right end of the plunger 2 and the spring seat 12 on the pump body 1, lubricating grease is pushed away from the grease sucking one-way valve steel ball 7 from the grease sucking one-way valve upper seat 6 to be sucked, and preparation is made for the next cycle.

The power device of the invention is the combination of a motor acceleration and deceleration mechanism and a cam, and can also be an electric push rod.

The invention can be designed to be inserted, and the return spring 11 of the plunger 2 can be designed to be external; when the power device is an electric push rod, the return spring 11 capable of removing the plunger 2 is directly pushed and pulled by the push rod.

The invention can arrange an annular undercut groove on the inner wall of the plunger hole of the pump body 1 and is communicated with the grease discharging hole.

The invention can arrange different grease discharging holes on the pump body 1 and configure the plunger 2 and the power device with corresponding strokes according to the requirements.

Fourthly, explanation of the attached drawings:

FIG. 1 is a structural diagram of a two-point progressive quantitative grease supply lubrication pump according to the present invention.

The fifth embodiment is as follows:

the specific implementation mode of the invention is as follows: in an initial state, lubricating grease is filled in a cavity between the right end of a plunger 2 on a pump body 1 and a spring seat 12, a cutting groove on the plunger 2 is fully communicated with a leftmost grease discharging hole on the pump body 1, when a power device pushes the plunger 2 to move rightwards, the space of the cavity between the right end of the plunger 2 on the pump body 1 and the spring seat 12 is occupied, the same volume of lubricating grease is discharged, a grease discharging one-way valve steel ball 3 is opened through a grease discharging one-way valve seat 5 and flows through a central hole and the cutting groove on the plunger 2 to be discharged to a first lubricating point, the plunger 2 continues to move rightwards, the cutting groove on the plunger 2 gradually completes switching and grease supply from the leftmost grease discharging hole to a second grease discharging hole on the pump body 1, and progressive quantitative grease supply to the lubricating points is realized; when the plunger 2 moves rightwards, the grease discharging one-way valve steel ball 3 is pressed tightly under the action of the spring 9 to close the flow channel of the grease discharging one-way valve seat 5, the plunger 2 moves leftwards under the action of the spring 11, along with the left movement of the plunger 2, a negative pressure is generated in a containing cavity between the right end of the plunger 2 and the spring seat 12 on the pump body 1, lubricating grease is pushed away from the grease sucking one-way valve steel ball 7 from the grease sucking one-way valve upper seat 6 to be sucked, and preparation is made for the next cycle.