A connecting rod with oil passage for high pressure plunger pump

Abstract

The utility model relates to the technical field of high-pressure plunger pumps, specifically a connecting rod with an oil passage for a high-pressure plunger pump, comprising a first connecting end, a second connecting end, a first end rod, a second end rod, and an intermediate rod integrally formed between the first end rod and the second end rod, wherein a spiral oil delivery passage is provided inside the first end rod and the second end rod, and a straight oil delivery passage connected to both spiral oil delivery passages is provided inside the intermediate rod. The utility model can increase the time that the oil stays inside the end rod by arranging a spiral oil delivery passage inside the end rod, and can also increase the contact area between the oil and the end rod, so as to effectively dissipate heat from the end rod. In the intermediate rod part, the straight oil delivery passage inside is connected to the second strip groove on the circumferential outer wall through a plurality of second oil outlet holes. This design allows the oil to pass through the surface of the connecting rod evenly, effectively lubricates the outer wall of the intermediate rod, and improves the cooling effect on the intermediate rod.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure plunger pumps, in particular to a connecting rod with an oil passage for a high-pressure plunger pump. Background Art

[0002] In the field of high-pressure plunger pump technology, the connecting rod is a key component whose performance and durability directly impact the overall performance and lifespan of the pump. Traditional connecting rod designs often focus solely on mechanical properties and structural stability, while ignoring the heat and wear that can occur during operation. Consequently, in practical applications, the high temperatures and wear generated by long-term operation can lead to performance degradation and even failure, severely impacting the stability and reliability of high-pressure plunger pumps.

[0003] To address these issues, some designs have attempted to add heat dissipation and lubrication structures inside or outside the connecting rod. However, these designs often suffer from structural complexity, high manufacturing costs, and suboptimal heat dissipation and lubrication. Connecting rod heat dissipation and lubrication issues are particularly acute in high-pressure, high-speed operating environments, making traditional designs difficult to meet practical requirements. Therefore, we propose a connecting rod with oil channels for high-pressure plunger pumps. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a connecting rod with an oil passage for a high-pressure plunger pump.

[0005] The technical solution of the utility model is:

[0006] A connecting rod with an oil passage for a high-pressure plunger pump comprises a first connecting end, a second connecting end, a first end rod, a second end rod and an intermediate rod integrally formed between the first end rod and the second end rod, wherein a spiral oil delivery passage is provided inside the first end rod and the second end rod, a straight oil delivery passage connected to both spiral oil delivery passages is provided inside the intermediate rod, at least three second strip grooves are provided on the circumferential outer wall of the intermediate rod, each of the second strip grooves is connected to the straight oil delivery passage through a plurality of second oil outlet holes, the first connecting end is fixedly connected to the first end rod, and the second connecting end is fixedly connected to the second end rod.

[0007] As a preferred technical solution, the spiral oil passage inside the first end rod is connected to an oil outlet pipe at one end away from the straight oil passage, and the spiral oil passage inside the second end rod is connected to an oil inlet pipe at one end away from the straight oil passage.

[0008] As a preferred technical solution, a pressurized oil pump is installed on the oil inlet pipe.

[0009] As a preferred technical solution, at least three first strip grooves are provided on the circumferential outer walls of the first end rod and the second end rod, and each of the first strip grooves is connected to the spiral oil delivery channel through a plurality of first oil outlet holes.

[0010] As a preferred technical solution, the intermediate rod is located inside the direct oil channel and is fixedly connected to a plurality of support frames arranged at equal intervals.

[0011] As a preferred technical solution, the support frame includes a central block located in the middle and a plurality of support plates integrally formed on the outer wall of the central block.

[0012] As a preferred technical solution, the length of the second strip-shaped groove is equal to the length of the middle rod.

[0013] As a preferred technical solution, a guide net is fixed near the outer side of each of the first strip-shaped groove and the second strip-shaped groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model can increase the time that the oil stays inside the end rod by arranging a spiral oil delivery channel inside the end rod, and can also increase the contact area between the oil and the end rod, which can effectively dissipate heat from the end rod. The straight oil delivery channel inside the middle rod part is connected to the second strip groove on the circumferential outer wall through multiple second oil outlet holes. This design allows the oil to pass through the surface of the connecting rod evenly, effectively lubricating the outer wall of the middle rod and improving the cooling effect on the middle rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the middle rod in the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the second end rod in the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the support frame in the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. First connecting end; 2. Intermediate rod; 20. Second strip groove; 21. Second oil outlet; 22. Straight oil channel; 23. Support frame; 3. First end rod; 4. Second end rod; 40. Oil inlet pipe; 41. Pressurized oil pump; 5. Second connecting end; 6. Spiral oil channel; 7. First strip groove; 8. First oil outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-4 , the utility model provides a technical solution:

[0024] A connecting rod with an oil channel for a high-pressure plunger pump includes a first connecting end 1, a second connecting end 5, a first end rod 3, a second end rod 4, and an intermediate rod 2 integrally formed between the first end rod 3 and the second end rod 4. A spiral oil delivery channel 6 is provided inside the first end rod 3 and the second end rod 4. A straight oil delivery channel 22 connected to both spiral oil delivery channels 6 is provided inside the intermediate rod 2. At least three second strip grooves 20 are provided on the circumferential outer wall of the intermediate rod 2. Each second strip groove 20 is connected to the straight oil delivery channel 22 through a plurality of second oil outlet holes 21. The first connecting end 1 is fixedly connected to the first end rod 3, and the second connecting end 5 is fixedly connected to the second end rod 4. By arranging a spiral oil delivery channel 6 inside the end rod, the time that the oil stays inside the end rod can be increased, and the contact area between the oil and the end rod can also be increased, which can effectively dissipate heat from the end rod. In the middle rod 2 part, the straight oil delivery channel 22 inside is connected to the second strip groove 20 on the circumferential outer wall through multiple second oil outlet holes 21. This design allows the oil to pass through the surface of the connecting rod evenly, effectively lubricating the outer wall of the middle rod 2 and improving the cooling effect of the middle rod 2.

[0025] It should be supplemented that the first connecting end 1 is connected to the plunger, and the second connecting end 5 is connected to the crank.

[0026] As a preferred embodiment of this embodiment, the end of the spiral oil passage 6 in the first end rod 3 away from the straight oil passage 22 is connected to an oil outlet pipe, and the end of the spiral oil passage 6 in the second end rod 4 away from the straight oil passage 22 is connected to an oil inlet pipe 40. The oil inlet pipe 40 and the oil outlet pipe are provided for respectively delivering oil into and out of the interior of the connecting rod.

[0027] As a preferred embodiment of the present invention, a pressurized oil pump 41 is installed on the oil inlet pipe 40. The pressurized oil pump 41 can increase the delivery pressure and flow rate of the oil, thereby improving the working efficiency and heat dissipation performance of the connecting rod.

[0028] As a preferred feature of this embodiment, at least three first strip-shaped grooves 7 are formed on the circumferential outer walls of the first and second end rods 3 and 4. Each first strip-shaped groove 7 is connected to the spiral oil channel 6 via a plurality of first oil outlet holes 8. Oil in the spiral oil channel 6 can overflow into the first strip-shaped grooves 7 through the first oil outlet holes 8 and extend to the outer walls of the end rods, thereby lubricating the end rods.

[0029] As a preferred feature of this embodiment, the intermediate rod 2 is fixedly connected to a plurality of equally spaced support brackets 23 within the direct oil passage 22. These support brackets 23 enhance the structural strength of the intermediate rod 2, prevent deformation or damage to the oil passage under high pressure, and improve the service life and safety of the connecting rod.

[0030] As a preferred embodiment of the present invention, the support frame 23 includes a central block located in the middle and a plurality of support plates integrally formed on the outer wall of the central block. This structural design can ensure support for the intermediate rod 2 without affecting the circulation of oil.

[0031] As a preference of this embodiment, the length of the second strip groove 20 is equal to the length of the intermediate rod 2. This means that the oil can be evenly distributed along the entire length of the intermediate rod 2, further improving the heat dissipation performance of the connecting rod.

[0032] As a preferred embodiment of this invention, a guide net is fixed near the outer side of each of the first strip groove 7 and the second strip groove 20. The guide net can guide the flow of oil and prevent oil from accumulating or forming eddies in the grooves, thereby improving the oil circulation efficiency and the heat dissipation effect of the connecting rod.

[0033] When the connecting rod with oil passage of the high-pressure plunger pump of the present invention is in use, the oil first enters the spiral oil delivery channel 6 inside the second end rod 4 through the oil inlet pipe 40. The pressurized oil pump 41 installed on the oil inlet pipe 40 provides sufficient pressure and flow rate for the oil, ensuring that the oil can flow smoothly through the interior of the connecting rod.

[0034] As oil flows through spiral oil channel 6 of second end rod 4, the channel's spiral shape causes the oil to swirl and mix during flow. This helps increase the area and duration of contact between the oil and the rod wall, thereby enhancing heat dissipation. Simultaneously, some oil overflows into first strip groove 7 through first oil outlet 8, located between spiral oil channel 6 and first strip groove 7. It then flows along the outer walls of first and second end rods 3, 4, lubricating and cooling the rods.

[0035] When the oil flows through the direct oil channel 22, some of the oil overflows into the second strip groove 20 through the second oil outlet 21 provided between the direct oil channel 22 and the second strip groove 20. Since the length of the second strip groove 20 is equal to the length of the intermediate rod 2, the oil can be evenly distributed along the entire length of the intermediate rod 2, further improving the heat dissipation performance of the connecting rod.

[0036] Finally, the oil flows out through the spiral oil delivery channel 6 inside the first end rod 3 and is discharged through the oil outlet pipe. During this process, the oil is also rotated and mixed in the spiral oil delivery channel 6, and overflows through the first oil outlet hole 8 into the first strip groove 7 for lubrication and cooling.

[0037] During the entire process, the guide net is arranged near the outside of the first strip groove 7 and the second strip groove 20 to guide the flow of oil and prevent the oil from accumulating or forming vortices in the grooves, thereby improving the oil circulation efficiency and the heat dissipation effect of the connecting rod.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting rod with an oil passage for a high-pressure plunger pump, characterized in that: The invention comprises a first connecting end (1), a second connecting end (5), a first end rod (3), a second end rod (4), and an intermediate rod (2) integrally formed between the first end rod (3) and the second end rod (4); a spiral oil delivery channel (6) is provided inside each of the first end rod (3) and the second end rod (4); a straight oil delivery channel (22) connected to both spiral oil delivery channels (6) is provided inside the intermediate rod (2); at least three second strip grooves (20) are provided on the circumferential outer wall of the intermediate rod (2); each of the second strip grooves (20) is connected to the straight oil delivery channel (22) via a plurality of second oil outlet holes (21); the first connecting end (1) is fixedly connected to the first end rod (3); and the second connecting end (5) is fixedly connected to the second end rod (4).

2. The connecting rod with oil passage for a high-pressure plunger pump according to claim 1, characterized in that: An end of the spiral oil passage (6) inside the first end rod (3) away from the straight oil passage (22) is connected to an oil outlet pipe, and an end of the spiral oil passage (6) inside the second end rod (4) away from the straight oil passage (22) is connected to an oil inlet pipe (40).

3. The connecting rod with oil passage for a high-pressure plunger pump according to claim 2, characterized in that: A pressurized oil pump (41) is installed on the oil inlet pipe (40).

4. The connecting rod with oil passage for a high-pressure plunger pump according to claim 3, characterized in that: At least three first strip-shaped grooves (7) are provided on the circumferential outer walls of the first end rod (3) and the second end rod (4), and each of the first strip-shaped grooves (7) is connected to the spiral oil delivery channel (6) through a plurality of first oil outlet holes (8).

5. The connecting rod with oil passage for a high-pressure plunger pump according to claim 4, characterized in that: The intermediate rod (2) is located inside the direct oil delivery channel (22) and is fixedly connected to a plurality of support frames (23) arranged at equal intervals.

6. The connecting rod with oil passage for a high-pressure plunger pump according to claim 5, characterized in that: The support frame (23) comprises a central block located in the middle and a plurality of support plates integrally formed on the outer wall of the central block.

7. The connecting rod with oil passage for a high-pressure plunger pump according to claim 6, characterized in that: The length of the second strip-shaped groove (20) is equal to the length of the middle rod (2).

8. The connecting rod with oil passage for a high-pressure plunger pump according to claim 7, characterized in that: A flow guide net is fixed inside the first strip-shaped groove (7) and the second strip-shaped groove (20) close to the outer side.

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