Integrated lubricating system of plunger pump

Abstract

The utility model discloses an integrated lubricating system of a plunger pump and belongs to the technical field of plunger pump lubrication. An oil pumping hole channel is formed in a lubricating oil pump along the axis, a main oil inlet hole channel communicated with the oil pumping hole channel is formed in a crankshaft, and a lubricating main oil way is arranged in the crankshaft. The crankshaft is further provided with a left connecting rod sleeve lubricating hole, a right connecting rod sleeve lubricating hole, a left bearing lubricating hole and a right bearing lubricating hole which are communicated with the lubricating main oil way, and the left connecting rod sleeve lubricating hole extends to a friction pair between the left connecting rod sleeve and the crankshaft. The right connecting rod sleeve lubricating hole extends to a friction pair between the right connecting rod sleeve and the crankshaft, the left bearing lubricating hole extends to the crankshaft left bearing, and the right bearing lubricating hole extends to the crankshaft right bearing. The form that the crankshaft drives the lubricating oil pump is adopted, a forced integrated lubricating system is formed, and the lubricating requirement of the marine plunger pump can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of plunger pump lubrication, and in particular relates to an integrated lubrication system of a plunger pump. Background Art

[0002] The lubrication system of the plunger pump is a necessary auxiliary system to ensure its normal operation. The lubrication system formed by the traditional motor-driven oil pump outputs pressurized lubricating oil from the oil pump outlet to lubricate each lubrication point. However, the marine plunger pump has a compact structure, requires many lubrication points, requires many lubricating oil pipes to be arranged, and has a small shell space. It is not easy to arrange lubricating oil pipes inside the shell. The traditional lubrication system is not enough to meet the lubrication requirements. Utility Model Content

[0003] The utility model aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides an integrated lubrication system for a plunger pump; the utility model adopts a crankshaft-driven lubricating oil pump to form a forced integrated lubrication system, which can meet the lubrication needs of a marine plunger pump.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions.

[0005] The utility model provides an integrated lubrication system of a plunger pump, comprising a worm connected to a drive shaft through a coupling, the upper end and the lower end of the worm being respectively connected to an upper bearing of the worm and a lower bearing of the worm, the worm being meshed with a worm wheel to form a transmission pair, the worm wheel being arranged at the middle of a crankshaft, a left connecting rod being connected to the left side of the crankshaft, a left connecting rod sleeve being arranged between the crankshaft and the left connecting rod, a right connecting rod being connected to the right side of the crankshaft, a right connecting rod sleeve being arranged between the crankshaft and the right connecting rod, a left plunger shaft being arranged in a hole at the lower end of the left connecting rod, a right plunger shaft being arranged in a hole at the lower end of the right connecting rod, a left crankshaft bearing and a right crankshaft bearing being arranged at the left end and the right end of the crankshaft respectively, and a lubricating oil pump being further connected to the right end of the crankshaft. The lubricating oil pump is driven to work by the rotation of the crankshaft, and is characterized in that an oil pumping hole is arranged along the axis of the lubricating oil pump, a main oil inlet hole connected with the oil pumping hole is arranged on the crankshaft, a main lubrication oil circuit is arranged in the crankshaft, and a left connecting rod sleeve lubrication hole, a right connecting rod sleeve lubrication hole, a left bearing lubrication hole, and a right bearing lubrication hole connected with the main lubrication oil circuit are also arranged on the crankshaft, the left connecting rod sleeve lubrication hole extends to the friction pair between the left connecting rod sleeve and the crankshaft, the right connecting rod sleeve lubrication hole extends to the friction pair between the right connecting rod sleeve and the crankshaft, the left bearing lubrication hole extends to the left bearing of the crankshaft, and the right bearing lubrication hole extends to the right bearing of the crankshaft.

[0006] Furthermore, an oil suction port is provided at the lower end of the lubricating oil pump, and an oil output port is provided at the upper end of the lubricating oil pump. The oil output port is respectively connected to an upper bearing lubrication interface provided on the upper bearing of the worm, a lower bearing lubrication interface provided on the lower bearing of the worm, and a worm gear lubrication interface provided at the meshing point of the worm wheel and the worm through an externally connected oil pipeline of more than one minute.

[0007] Furthermore, oil nozzles are provided on the left connecting rod sleeve lubrication hole, the right connecting rod sleeve lubrication hole, the left bearing lubrication hole, and the right bearing lubrication hole.

[0008] Furthermore, the main lubrication oil circuit is formed by connecting a plurality of process holes with equal apertures.

[0009] Furthermore, a left through oil passage is provided in the left connecting rod, the left through oil passage is communicated with the lubrication hole of the left connecting rod sleeve, and the left through oil passage extends to the outer surface of the left plunger shaft.

[0010] Furthermore, a left annular oil groove is provided on the left connecting rod sleeve, and the left through oil passage and the left connecting rod sleeve lubrication hole are simultaneously connected to the left annular oil groove.

[0011] Furthermore, a right through oil passage is provided in the right connecting rod, the right through oil passage is communicated with the lubrication hole of the right connecting rod sleeve, and the right through oil passage extends to the outer surface of the right plunger shaft.

[0012] Furthermore, a right annular oil groove is provided on the right connecting rod sleeve, and the right through oil passage and the right connecting rod sleeve lubrication hole are simultaneously connected to the right annular oil groove.

[0013] Furthermore, the shaft end of the lubricating oil pump is connected to the shaft end of the crankshaft via a key.

[0014] The beneficial effects of the utility model.

[0015] The utility model adopts the form of crankshaft driven lubricating oil pump on the basis of the existing plunger pump structure, uses structural components as oil circuit blocks to form various lubricating oil channels connected to the inside of the lubricating oil pump, cooperates with some lubricating oil pipes to form a forced integrated lubrication system to meet the lubrication needs of marine plunger pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0017] Figure 1 It is a schematic diagram of the first partial cross-sectional structure of the utility model.

[0018] Figure 2 It is a second partial cross-sectional structural schematic diagram of the utility model.

[0019] Figure 3 It is a third partial cross-sectional structural schematic diagram of the utility model.

[0020] Markings in the figure: 1 is the worm, 2 is the upper bearing of the worm, 3 is the lower bearing of the worm, 4 is the worm wheel, 5 is the crankshaft, 6 is the left connecting rod, 7 is the left connecting rod sleeve, 8 is the right connecting rod, 9 is the right connecting rod sleeve, 10 is the left plunger shaft, 11 is the right plunger shaft, 12 is the left bearing of the crankshaft, 13 is the right bearing of the crankshaft, 14 is the lubricating oil pump, 15 is the pump oil channel, 16 is the main oil inlet channel, 17 is the total lubrication oil circuit, 18 is the lubrication hole of the left connecting rod sleeve, 19 is the lubrication hole of the right connecting rod sleeve, 20 is the lubrication hole of the left bearing, 21 is the lubrication hole of the right bearing, 22 is the output oil port, 23 is the suction oil port, 24 is the upper bearing lubrication interface, 25 is the lower bearing lubrication interface, 26 is the worm gear lubrication interface, 27 is the left annular oil groove, 28 is the right through oil circuit, and 29 is the right annular oil groove. DETAILED DESCRIPTION

[0021] As shown in the accompanying drawings, this embodiment provides an integrated lubrication system for a plunger pump, including a worm 1 connected to a drive shaft through a coupling, the upper and lower ends of the worm 1 are respectively connected to a worm upper bearing 2 and a worm lower bearing 3, the worm 1 is meshed with a worm wheel 4 to form a transmission pair, the worm wheel 4 is arranged in the middle of a crankshaft 5, a left connecting rod 6 is connected to the left side of the crankshaft 5, a left connecting rod sleeve 7 is arranged between the crankshaft 5 and the left connecting rod 6, a right connecting rod 8 is connected to the right side of the crankshaft 5, a right connecting rod sleeve 9 is arranged between the crankshaft 5 and the right connecting rod 8, a left plunger shaft 10 is arranged in the lower end hole of the left connecting rod 6, a right plunger shaft 11 is arranged in the lower end hole of the right connecting rod 8, and a left crankshaft bearing 12 and a right crankshaft bearing 13 are respectively arranged at the left and right ends of the crankshaft 5.

[0022] The right end of the crankshaft 5 is also connected to a lubricating oil pump 14. The shaft end of the lubricating oil pump 14 is set as a spline shaft, and the shaft end of the crankshaft 5 is set as a matching spline shaft hole. The shaft end of the lubricating oil pump 14 is connected to the shaft end of the crankshaft 5 through a key, and the lubricating oil pump 14 is driven to work by the rotation of the crankshaft 5.

[0023] The worm 1 is driven to rotate by the driving shaft, thereby driving the worm wheel 4 to rotate, and the worm wheel 4 drives the crankshaft 5 to rotate, driving the left connecting rod 6 and the right connecting rod 8 on both sides to move to realize the pumping work.

[0024] An oil pumping hole 15 is arranged along the axis of the lubricating oil pump 14, a main oil inlet hole 16 connected to the oil pumping hole 15 is arranged on the crankshaft 5, a lubricating main oil circuit 17 is arranged inside the crankshaft 5, and the lubricating main oil circuit 17 is connected by a plurality of process holes with equal apertures.

[0025] The crankshaft 5 is also provided with a left connecting rod sleeve lubrication hole 18, a right connecting rod sleeve lubrication hole 19, a left bearing lubrication hole 20, and a right bearing lubrication hole 21 which are connected to the lubrication main oil circuit 17. The left connecting rod sleeve lubrication hole 18 extends to the friction pair between the left connecting rod sleeve 7 and the crankshaft 5, and lubrication oil is delivered to lubricate the friction pair between the left connecting rod sleeve 7 and the crankshaft 5; the right connecting rod sleeve lubrication hole 19 extends to the friction pair between the right connecting rod sleeve 9 and the crankshaft 5, and lubrication oil is delivered to lubricate the friction pair between the right connecting rod sleeve 9 and the crankshaft 5; the left bearing lubrication hole 20 extends to the left crankshaft bearing 12, and lubrication oil is delivered to lubricate the left crankshaft bearing 12; the right bearing lubrication hole 21 extends to the right crankshaft bearing 13, and lubrication oil is delivered to lubricate the right crankshaft bearing 13.

[0026] If necessary, oil nozzles can be provided on the left connecting rod sleeve lubrication hole 18, the right connecting rod sleeve lubrication hole 19, the left bearing lubrication hole 20, and the right bearing lubrication hole 21 to adjust the pressure oil and perform fine adjustment according to the parameter requirements of each lubrication point.

[0027] An output oil port 22 is provided at the upper end of the lubricating oil pump 14, and an intake oil port 23 is provided at the lower end of the lubricating oil pump 14. The output oil port 22 is connected to an upper bearing lubrication interface 24 provided on the worm upper bearing 2, a lower bearing lubrication interface 25 provided on the worm lower bearing 3, and a worm gear lubrication interface 26 provided at the meshing point of the worm wheel 4 and the worm 1 through an externally connected oil delivery pipe of more than one minute, so as to effectively lubricate these three friction pairs.

[0028] A left through oil circuit (blocked and not shown in the figure) is arranged in the left connecting rod 6, and a left annular oil groove 27 is arranged on the left connecting rod sleeve 7. The left through oil circuit and the left connecting rod sleeve lubrication hole 18 are communicated with the left annular oil groove 27 at the same time, so that the left through oil circuit is communicated with the left connecting rod sleeve lubrication hole 18, and the left through oil circuit extends to the outer surface of the left plunger shaft 10. The left through oil circuit transports the lubricating oil to the outer surface of the left plunger shaft 10, thereby realizing the lubrication of the friction pair between the left plunger shaft 10 and the left connecting rod 6.

[0029] A right through oil passage 28 is provided in the right connecting rod 8, and a right annular oil groove 29 is provided on the right connecting rod sleeve 9. The right through oil passage 28 and the right connecting rod sleeve lubrication hole 19 are communicated with the right annular oil groove 29 at the same time, so that the right through oil passage 28 is communicated with the right connecting rod sleeve lubrication hole 19, and the right through oil passage 28 extends to the outer surface of the right plunger shaft 11. The right through oil passage 28 transports the lubricating oil to the outer surface of the right plunger shaft 11, thereby realizing the lubrication of the friction pair between the right plunger shaft 11 and the right connecting rod 8.

[0030] The working principle is as follows: the motor drives the worm 1 to rotate, and the worm 1 meshes to drive the worm wheel 4 to rotate, thereby driving the crankshaft 5 to rotate. While the crankshaft 5 rotates, it serves as the driving shaft of the lubricating oil pump 14, driving the lubricating oil pump 14 to work and realize the pumping of pressure oil. A part of the pressure oil generated by the lubricating oil pump 14 enters the shaft hole of the crankshaft 5 through the shaft hole of the lubricating oil pump 14, and is transported to each lubrication point through the oil path in the crankshaft 5. The other part is transported to the meshing point between the worm wheel 4 and the worm 1, the worm upper bearing 2 and the worm lower bearing 3 through the output oil port 23 and the lubrication pipeline, realizing forced centralized lubrication.

[0031] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. An integrated lubrication system for a plunger pump, comprising a worm (1) connected to a drive shaft via a coupling, the upper end and the lower end of the worm (1) being respectively connected to a worm upper bearing (2) and a worm lower bearing (3), the worm (1) meshing with a worm wheel (4) forming a transmission pair, the worm wheel (4) being arranged at the middle of a crankshaft (5), a left connecting rod (6) being connected to the left side of the crankshaft (5), a left connecting rod sleeve (7) being arranged between the crankshaft (5) and the left connecting rod (6), and a right connecting rod (8) being connected to the right side of the crankshaft (5). 8), a right connecting rod sleeve (9) is arranged between the crankshaft (5) and the right connecting rod (8), a left plunger shaft (10) is arranged in the lower end hole of the left connecting rod (6), a right plunger shaft (11) is arranged in the lower end hole of the right connecting rod (8), a left crankshaft bearing (12) and a right crankshaft bearing (13) are arranged at the left and right ends of the crankshaft (5), respectively, and a lubricating oil pump (14) is also connected to the right end of the crankshaft (5), and the lubricating oil pump (14) is driven to work by the rotation of the crankshaft (5), characterized in that: The lubricating oil pump (14) is provided with an oil pumping hole (15) along the axis, the crankshaft (5) is provided with a main oil inlet hole (16) connected to the oil pumping hole (15), the crankshaft (5) is provided with a lubricating main oil circuit (17), and the crankshaft (5) is also provided with a left connecting rod sleeve lubricating hole (18), a right connecting rod sleeve lubricating hole (19), a left bearing lubricating hole (20), and a right bearing lubricating hole (21) connected to the lubricating main oil circuit (17). The left connecting rod sleeve lubricating hole (18) extends to the friction pair between the left connecting rod sleeve (7) and the crankshaft (5), the right connecting rod sleeve lubricating hole (19) extends to the friction pair between the right connecting rod sleeve (9) and the crankshaft (5), the left bearing lubricating hole (20) extends to the left crankshaft bearing (12), and the right bearing lubricating hole (21) extends to the right crankshaft bearing (13).

2. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: An oil suction port (23) is provided at the lower end of the lubricating oil pump (14), and an oil discharge port (22) is provided at the upper end of the lubricating oil pump (14). The oil discharge port (22) is respectively connected to an upper bearing lubrication interface (24) provided on the worm upper bearing (2), a lower bearing lubrication interface (25) provided on the worm lower bearing (3), and a worm gear lubrication interface (26) provided at a meshing position between the worm wheel (4) and the worm (1) through an externally connected oil delivery pipe of more than one minute.

3. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: The left connecting rod sleeve lubrication hole (18), the right connecting rod sleeve lubrication hole (19), the left bearing lubrication hole (20), and the right bearing lubrication hole (21) are provided with oil nozzles.

4. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: The lubrication main oil circuit (17) is formed by connecting a plurality of process holes with equal apertures.

5. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: A left through oil passage is provided in the left connecting rod (6), the left through oil passage is in communication with the left connecting rod sleeve lubrication hole (18), and the left through oil passage extends to the outer surface of the left plunger shaft (10).

6. The integrated lubrication system of a plunger pump according to claim 5, characterized in that: The left connecting rod sleeve (7) is provided with a left annular oil groove (27), and the left through oil passage and the left connecting rod sleeve lubrication hole (18) are simultaneously connected to the left annular oil groove (27).

7. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: A right through oil passage (28) is provided in the right connecting rod (8), the right through oil passage (28) is communicated with the lubrication hole (19) of the right connecting rod sleeve, and the right through oil passage (28) extends to the outer surface of the right plunger shaft (11).

8. The integrated lubrication system of a plunger pump according to claim 7, characterized in that: The right connecting rod sleeve (9) is provided with a right annular oil groove (29), and the right through oil passage (28) and the right connecting rod sleeve lubrication hole (19) are simultaneously connected to the right annular oil groove (29).

9. The integrated lubrication system of a plunger pump according to claim 1, characterized in that: The shaft end of the lubricating oil pump (14) is connected to the shaft end of the crankshaft (5) via a key.

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