A high-pressure plunger pump device with a multi-channel limiting structure

Abstract

This utility model relates to the field of high-pressure plunger pump technology, and discloses a high-pressure plunger pump device with a multi-channel limiting structure. It includes a base, a pump body fixedly connected to the outside of the base, a crankshaft rotatably connected inside the pump body, multiple connecting rods fixedly connected to the outside of the crankshaft, a plunger fixedly connected to the right side of the connecting rods, multiple anti-deviation mechanisms fixedly connected to the outside of the plunger, and a shock-absorbing mechanism fixedly connected to the bottom of the pump body. The anti-deviation mechanism includes a guide sleeve, which is fixedly connected to the outside of the plunger, and a stop ring is fixedly connected to the outside of the guide sleeve. In this utility model, when the high-pressure pump is working, the plunger drives the guide sleeve to move, which in turn causes the tension spring to drive the support plate to move, thereby achieving anti-deviation through limiting. This ensures precise axial movement of the plunger, reduces radial wear and leakage, and enhances operational stability.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure plunger pump technology, and in particular to a high-pressure plunger pump device with a multi-channel limiting structure. Background Technology

[0002] In the petrochemical industry, it is used for high-pressure fluid injection and crude oil transportation to ensure stable flow and meet the needs of complex processes; in the field of engineering machinery, such as the hydraulic devices of excavators and cranes, it can provide reliable power and adapt to frequent start-stop and heavy-load conditions; in the shipbuilding industry, in deck machinery and steering gear hydraulic drives, its good sealing and stability performance can ensure the normal operation of ships in harsh marine environments.

[0003] In the existing technology, some high-pressure plunger pump devices adopt a single-channel or few-channel design, and drive the plunger to reciprocate through the crankshaft connecting rod mechanism to achieve oil suction and discharge. Multi-channel plunger pumps utilize multiple plunger chambers to work in parallel, which can theoretically increase the flow output. In terms of sealing structure, rubber sealing rings or packing seals are commonly used and set at the joints between the plunger and the cylinder, end cover, etc.

[0004] However, in actual use, without a multi-channel limiting structure, the plunger is easily affected by radial force and will deviate, leading to increased wear with the cylinder body, seal failure, and liquid leakage; at the same time, it will cause flow fluctuations, reduce volumetric efficiency, and make it difficult to meet the stable operation requirements of high pressure and high precision conditions. In order to address the above problems, a high-pressure plunger pump device with a multi-channel limiting structure is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a high-pressure plunger pump device with a multi-channel limiting structure, which aims to improve the problem that some high-pressure plunger pump devices in the prior art cannot achieve anti-deviation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-pressure plunger pump device with a multi-channel limiting structure includes a base, a pump body fixedly connected to the outside of the base, a crankshaft rotatably connected inside the pump body, multiple connecting rods fixedly connected to the outside of the crankshaft, a plunger fixedly connected to the right side of the connecting rods, multiple anti-deviation mechanisms fixedly connected to the outside of the plunger, and a shock-absorbing mechanism fixedly connected to the bottom of the pump body.

[0008] The anti-deviation mechanism includes a guide sleeve, the outside of which is fixedly connected to the outside of the plunger. A stop ring is fixedly connected to the outside of the guide sleeve. A limit ring is fixedly connected to the inside of the pump body. A support plate is fixedly connected to the right side of the outside of the pump body. Multiple openings and slots are provided inside the support plate. Multiple tension springs are fixedly connected to the outside of the support plate. Multiple support components are fixedly connected to the outside of the pump body.

[0009] As a further description of the above technical solution:

[0010] The support assembly includes a limiting plate, which is externally fixedly connected to the outside of the pump body, and the outside of the pump body is threaded with multiple fixing bolts;

[0011] As a further description of the above technical solution:

[0012] A liquid chamber is fixedly connected to the outside of the pump body, an inlet is provided on the outside of the liquid chamber, and multiple one-way valves are fixedly connected inside the liquid chamber.

[0013] As a further description of the above technical solution:

[0014] The shock absorption mechanism includes a connecting block, the bottom of which is fixedly connected to the bottom of the pump body, and a support rod is fixedly connected to the outside of the connecting block;

[0015] As a further description of the above technical solution:

[0016] The bottom of the support rod is fixedly connected to a base plate, and the bottom of the pump body is fixedly connected to multiple connecting plates;

[0017] As a further description of the above technical solution:

[0018] The connecting plate is externally fixedly connected to a follower plate, the follower plate is externally fixedly connected to a fixing block, and the fixing block is externally fixedly connected to a connecting ring.

[0019] As a further description of the above technical solution:

[0020] A return spring is fixedly connected to the outside of the connecting ring, and multiple buffer rods are fixedly connected to the bottom of the pump body;

[0021] As a further description of the above technical solution:

[0022] One end of the tension spring is fixedly connected to the outside of the support plate, and the other end of the tension spring is fixedly connected to the outside of the guide sleeve.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when the high-pressure pump is working, the plunger drives the guide sleeve to move, which in turn drives the stop ring to move, and then the tension spring drives the support plate to move. Thus, the limit is used to prevent deviation, which can ensure that the plunger moves accurately along the axial direction, reduce radial wear and leakage, reduce vibration and noise, enhance operation stability, and the multi-channel symmetrical limit can offset the off-center load, adapt to high-pressure working conditions, and facilitate miniaturization and reliability improvement.

[0025] 2. In this utility model, the connecting plate drives the follower plate to move, which in turn drives the fixed block to move the connecting ring, which in turn drives the reset spring to move. This buffers the impact of the plunger movement, reduces the vibration amplitude, reduces pump body shaking, reduces noise, and the rigid support and elastic combination suppress resonance, improves stability, and adapts to high-pressure fluctuation conditions. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a high-pressure plunger pump device with a multi-channel limiting structure proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the liquid chamber of a high-pressure plunger pump device with a multi-channel limiting structure proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the limiting plate of a high-pressure plunger pump device with a multi-channel limiting structure proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the inlet structure of a high-pressure plunger pump device with a multi-channel limiting structure proposed in this utility model.

[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Base; 2. Pump body; 3. Crankshaft; 4. Connecting rod; 5. Plunger; 6. Guide sleeve; 7. Stop ring; 8. Limit ring; 9. Support plate; 10. Opening groove; 11. Tension spring; 12. Limit plate; 13. Fixing bolt; 14. Liquid chamber; 15. Inlet; 16. Check valve; 17. Connecting block; 18. Support rod; 19. Base plate; 20. Connecting plate; 21. Follower plate; 22. Fixing block; 23. Connecting ring; 24. Return spring; 25. Buffer rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 , Figure 2 and Figure 5 The present invention provides an embodiment of a high-pressure plunger pump device with a multi-channel limiting structure, including a base 1, a pump body 2 fixedly connected to the outside of the base 1, heat dissipation fins on the outer surface of the pump body 2, which helps to dissipate the heat generated inside in time during pump operation and ensure the normal operating temperature of the pump body 2, a crankshaft 3 rotatably connected inside the pump body 2, the main journal of the crankshaft 3 cooperating with the bearing inside the pump body 2, and being able to rotate flexibly inside the pump body 2, transmitting power to the connecting rod 4 through its own rotational motion, thereby driving the plunger 5 to reciprocate; multiple connecting rods 4 fixedly connected to the outside of the crankshaft 3, and a plunger 5 fixedly connected to the right side of the connecting rod 4, the plunger 5 being driven by the connecting rod 4;

[0036] The plunger 5 reciprocates linearly within the pump body 2, continuously changing the volume of the pump chamber to achieve liquid intake and discharge. Multiple anti-deviation mechanisms are fixedly connected to the outside of the plunger 5, and a shock-absorbing mechanism is fixedly connected to the bottom of the pump body 2. The anti-deviation mechanism includes a guide sleeve 6, whose smooth inner wall provides precise guidance for the reciprocating motion of the plunger 5, limiting radial deviation during movement and ensuring stable linear movement, thus improving the pump's working accuracy and reliability. The guide sleeve 6 is fixedly connected to the outside of the plunger 5, and a stop ring 7 is also fixedly connected to its outside. The stop ring 7 prevents axial displacement of the guide sleeve 6 during the plunger 5's movement, ensuring that the guide sleeve 6 always maintains a relatively fixed position relative to the plunger 5, thereby continuously guiding and limiting the plunger 5. A limit ring 8 is fixedly connected inside the pump body 2.

[0037] When the plunger 5 approaches its limit position during movement, the limiting ring 8 can contact the stop ring 7 or the guide sleeve 6 to prevent the plunger 5 from continuing to move and to prevent the plunger 5 from damaging the pump body 2 or other components due to excessive movement. A support plate 9 is fixedly connected to the right side of the pump body 2. The support plate 9 has multiple openings and slots 10 inside. Multiple tension springs 11 are fixedly connected to the outside of the support plate 9. The tension springs 11 are always in a stretched or compressed state. They apply a certain preload to the plunger 5 or other components through their own elastic force, which helps the anti-deviation mechanism to limit the movement of the plunger 5 and further improves the stability of the plunger 5's movement. At the same time, they absorb and buffer the impact force and vibration generated by the plunger 5 during movement. Multiple support components are fixedly connected to the outside of the pump body 2. The support components include a limiting plate 12. The limiting plate 12 is fixedly connected to the outside of the pump body 2. Multiple fixing bolts 13 are threadedly connected to the outside of the pump body 2.

[0038] Specifically, during operation of the high-pressure plunger pump, the crankshaft 3 rotates flexibly with the cooperation of bearings within the pump body 2, driving multiple connecting rods 4 to move, which in turn drives the plunger 5 to perform linear reciprocating motion within the pump body 2, continuously changing the pump chamber volume to achieve liquid intake and discharge. The guide sleeve 6 outside the plunger 5 provides precise guidance with its smooth inner wall, limiting radial displacement; the stop ring 7 prevents axial displacement of the guide sleeve 6, ensuring the continuous effectiveness of the guiding function. When the plunger 5 approaches its limit position, the stop ring 7 contacts the guide sleeve 6, preventing excessive movement. At the same time, the tension spring 11 on the support plate 9 applies preload to the plunger 5 through elastic force, assisting in limiting movement and buffering impact force. The limiting plate 12 in the support assembly, together with the fixing bolts 13, stabilizes the structure of the pump body 2, while the heat dissipation fins dissipate the heat generated by the pump operation in a timely manner. Multiple components work together to ensure the stable operation of the high-pressure plunger pump.

[0039] Reference Figure 3 , Figure 4 and Figure 6 The shock absorption mechanism includes a connecting block 17, which provides a stable installation base for the entire shock absorption mechanism, enabling it to reliably withstand the vibration transmitted from the pump body 2. The bottom of the connecting block 17 is fixedly connected to the bottom of the pump body 2, and a support rod 18 is fixedly connected to the outside of the connecting block 17. A base plate 19 is fixedly connected to the bottom of the support rod 18. During the shock absorption process, the base plate 19 serves as the support surface of the entire shock absorption mechanism, further dispersing the vibration from the support rod 18. Through its connection with the ground, it transmits some of the vibration energy to the earth, thus stabilizing the pump device and providing shock absorption. Multiple connecting plates 20 are fixedly connected to the bottom of the pump body 2, and a follower plate 21 is fixedly connected to the outside of the connecting plate 20. The follower plate 21 transmits vibration and links other components. Its movement trend is consistent with the vibration direction of the pump body 2, driving components such as the fixed block 22 fixed on it to work together. The follower plate 21 is fixedly connected to the outside of the fixed block 22.

[0040] A connecting ring 23 is fixedly connected to the outside of the fixed block 22. The connecting ring 23 plays a dual role of buffering and connecting in the shock absorption mechanism. When the pump body 2 vibrates, the connecting ring 23 can undergo a certain degree of elastic deformation to absorb some vibration energy and transmit the vibration to the return spring 24. During the vibration of the pump body 2, the return spring 24 is compressed or stretched with the movement of the connecting ring 23. It absorbs and stores vibration energy through its own elastic deformation. The return spring 24 is fixedly connected to the outside of the connecting ring 23. Multiple buffer rods 25 are fixedly connected to the bottom of the pump body 2. One end of the tension spring 11 is fixedly connected to the outside of the support plate 9, and the other end of the tension spring 11 is fixedly connected to the outside of the guide sleeve 6. A liquid chamber 14 is fixedly connected to the outside of the pump body 2. An inlet 15 is provided on the outside of the liquid chamber 14. Multiple one-way valves 16 are fixedly connected to the inside of the liquid chamber 14.

[0041] Specifically, the bottom connecting block 17 of the pump body 2 absorbs vibration, which is then transmitted to the base plate 19 via the support rod 18 and distributed to the ground. The connecting plate 20 drives the follower plate 21 to move, which in turn causes the fixed block 22 to drive the connecting ring 23 to move. The return spring 24 absorbs vibration energy by compressing or stretching along with the connecting ring 23. The buffer rod 25 assists in shock absorption. Liquid flows into the liquid chamber 14 from the inlet 15, and the one-way valve 16 controls the flow direction. All components work together to ensure the continuous and stable operation of the high-pressure plunger pump.

[0042] Working principle: During the reciprocating motion of the plunger 5, the inner wall of the guide sleeve 6 and the outer surface of the plunger 5 are precisely matched to provide linear guidance. The stop ring 7 and the limit ring 8 limit the axial displacement range of the guide sleeve 6 and the plunger 5 to prevent the plunger 5 from moving beyond the limit. The tension spring 11 outside the support plate 9 continuously applies preload to the guide sleeve 6 through elastic deformation, further suppressing the radial offset and vibration of the plunger 5. The support assembly composed of the limit plate 12 and the fixing bolts 13 outside the pump body 2 strengthens the structural rigidity of the pump body 2 and ensures the stable positioning of each component.

[0043] When the pump body 2 vibrates due to the reciprocating motion of the plunger 5, the bottom damping mechanism works synchronously. The connecting block 17 transmits the vibration to the support rod 18. The support rod 18 buffers part of the energy through elastic deformation and then disperses the vibration to the bottom plate 19. The follower plate 21 follows the vibration of the pump body 2, causing the fixed block 22 and the connecting ring 23 to move synchronously, so that the return spring 24 is stretched or compressed. The vibration is balanced by elastic energy storage and release. The inner rod of the buffer rod 25 slides in the outer cylinder, squeezing the internal elastic material to further absorb the vibration energy. The heat dissipation fins on the outer surface of the pump body 2 continuously dissipate the heat generated during operation and maintain thermal balance.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure plunger pump device with a multi-channel limiting structure, comprising a base (1), characterized in that: The base (1) is fixedly connected to the outside of a pump body (2), and the inside of the pump body (2) is rotatably connected to a crankshaft (3). The outside of the crankshaft (3) is fixedly connected to multiple connecting rods (4). The right side of the connecting rods (4) is fixedly connected to a plunger (5). The outside of the plunger (5) is fixedly connected to multiple anti-deviation mechanisms. The bottom of the pump body (2) is fixedly connected to a shock-absorbing mechanism. The anti-deviation mechanism includes a guide sleeve (6), which is fixedly connected to the outside of the plunger (5). A stop ring (7) is fixedly connected to the outside of the guide sleeve (6). A limit ring (8) is fixedly connected to the inside of the pump body (2). A support plate (9) is fixedly connected to the right side of the outside of the pump body (2). Multiple openings (10) are provided inside the support plate (9). Multiple tension springs (11) are fixedly connected to the outside of the support plate (9). Multiple support components are fixedly connected to the outside of the pump body (2).

2. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 1, characterized in that: The support assembly includes a limiting plate (12), which is externally fixedly connected to the outside of the pump body (2), and the pump body (2) is externally threaded with a plurality of fixing bolts (13).

3. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 2, characterized in that: The pump body (2) is fixedly connected to a liquid chamber (14) on the outside. The liquid chamber (14) is provided with an inlet (15) on the outside. Multiple one-way valves (16) are fixedly connected inside the liquid chamber (14).

4. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 3, characterized in that: The shock absorption mechanism includes a connecting block (17), the bottom of which is fixedly connected to the bottom of the pump body (2), and a support rod (18) is fixedly connected to the outside of the connecting block (17).

5. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 4, characterized in that: The bottom of the support rod (18) is fixedly connected to a base plate (19), and the bottom of the pump body (2) is fixedly connected to multiple connecting plates (20).

6. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 5, characterized in that: The connecting plate (20) is externally fixedly connected to a follower plate (21), the follower plate (21) is externally fixedly connected to a fixing block (22), and the fixing block (22) is externally fixedly connected to a connecting ring (23).

7. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 6, characterized in that: A return spring (24) is fixedly connected to the outside of the connecting ring (23), and multiple buffer rods (25) are fixedly connected to the bottom of the pump body (2).

8. The high-pressure plunger pump device with a multi-channel limiting structure according to claim 1, characterized in that: One end of the tension spring (11) is fixedly connected to the outside of the support plate (9), and the other end of the tension spring (11) is fixedly connected to the outside of the guide sleeve (6).

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