Long-acting large-displacement oil lubrication plunger pump

Abstract

The utility model discloses a long-acting large-displacement oil lubrication plunger pump, and belongs to the technical field of plunger pump design and manufacturing. The long-acting large-displacement oil lubrication plunger pump further comprises a pair of electric cylinders fixedly connected to the left end face of the first right partition plate. The inner side end faces of the pair of second partition plates are fixedly connected with a pair of oil storage blocks correspondingly. The inner sides of the pair of second partition plates at the same height are slidably connected with sliding rods. A liquid channel is formed in the inner side of each sliding rod; each sliding rod is fixedly connected with the output end of the adjacent electric cylinder; a pair of second one-way valves is embedded in the two ends of the inner side of each liquid channel. A first one-way valve is embedded in the position, corresponding to the oil storage block, of each second partition plate. Two pairs of first one-way valves, two pairs of second one-way valves and two electric cylinders are arranged, so that two sliding rods move oppositely, hydraulic oil is continuously input into a pump outlet, long-acting large-displacement oil pumping is achieved, and meanwhile residual hydraulic oil on the inner side of an oil storage block can be used for oil lubrication.

Description

Technical Field

[0001] This utility model belongs to the field of plunger pump design and manufacturing technology, and more specifically, relates to a long-life, large-displacement oil-lubricated plunger pump. Background Technology

[0002] A piston pump is a common positive displacement pump that uses the reciprocating motion of a piston within a cylinder to change the volume of the working chamber, thereby achieving the intake and discharge of liquids. It is widely used in industries such as industrial applications, hydraulic systems, and petrochemicals due to its high pressure, high efficiency, and adjustable flow rate.

[0003] An oil-free lubricated plunger pump, as described in patent application CN200910098343.5, includes a valve body and a plunger. The valve body contains a plunger cavity, a water storage chamber, and a water inlet chamber. The plunger cavity has an inlet and an outlet, with a one-way valve installed at the outlet. The water storage chamber has an inlet, a connecting hole communicating with the water inlet chamber, a plunger hole communicating with the plunger cavity, and a plunger mounting hole communicating with the outside of the valve body. The water inlet chamber is located at the lower part of the plunger cavity and communicates with it through the inlet. A one-way valve is also installed within the water inlet chamber. The plunger head is located in the plunger cavity, the middle portion of the plunger passes through the plunger hole and is located in the water storage chamber, and the tail portion of the plunger extends out of the valve body through the plunger mounting hole and connects to the power system. This invention overcomes the problems of oil-lubricated plunger pumps and provides an oil-free lubricated plunger pump where the plunger is directly lubricated and cooled by the pumping fluid. It features convenient use, good heat dissipation, and cleanliness without pollution.

[0004] However, the aforementioned oilless plunger pump does not have the function of long-term continuous oil pumping and lacks practicality. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a long-lasting, large-displacement oil-lubricated plunger pump, which improves pumping efficiency and is more practical.

[0006] This utility model discloses a long-life, high-displacement oil-lubricated plunger pump, comprising a pump housing; a pair of partitions are fixedly connected to the inner side of the pump housing; an inner shell is fixedly connected between the two partitions; a pump outlet is fixedly connected to the left side of the inner shell; an oil inlet pipe is fixedly connected to the right side of the inner shell; the pump outlet and the oil inlet pipe are connected to the inner side of the inner shell; the right end of the oil inlet pipe passes through the right end face of the pump housing; a cooling oil injection pipe is fixedly connected to the right side of the pump housing; the cooling oil injection pipe is connected to the inner side of the pump housing; and a pump is also fixedly connected to the left end face of the right partition. A pair of electric cylinders; a pair of partition plates II are fixedly connected to the inner side of the inner housing; a pair of oil storage blocks are fixedly connected to the inner end faces of the pair of partition plates II respectively; a sliding rod is slidably connected to the inner side of the pair of partition plates II at the same height; a liquid channel is opened on the inner side of each sliding rod; each sliding rod is fixedly connected to the output end of the adjacent electric cylinder; a pair of sliding grooves are opened on the surface of each inner housing so that the connection between the electric cylinder and the sliding rod slides inside the sliding grooves; a pair of one-way valves II are embedded at both ends of the inner side of each liquid channel; a one-way valve I is embedded at the corresponding oil storage block of each partition plate II.

[0007] Preferably, an elastic wear-resistant sealing ring is snapped onto the inner end face of each oil storage block to seal the liquid inside the oil storage block.

[0008] Preferably, the lower end of the pump housing is fixedly connected to a support leg; the right side of the pump housing is fixedly connected to a cooling oil discharge pipe.

[0009] Preferably, the right-side partition has a pair of through holes to connect the two sides of the right-side partition.

[0010] Preferably, the cooling oil injection pipe is located on the upper right side of the pump housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] (1) By setting two pairs of one-way valves, two pairs of one-way valves, and two electric cylinders, the two slide bars move in opposite directions, continuously inputting hydraulic oil into the pump outlet, thus realizing long-term large-displacement pumping. At the same time, the residual hydraulic oil inside the oil storage block can be used for oil lubrication, which improves the pumping efficiency and makes it more practical.

[0013] (2) By setting up an elastic wear-resistant sealing ring, the cooling oil and hydraulic oil can be separated, preventing mutual contamination between the cooling oil and hydraulic oil, which is more practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the cooling oil injection pipe structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0018] The following are the labels in the diagram: 10. Pump housing; 11. Support leg; 12. Pump outlet; 13. Inner housing; 14. Cooling oil injection pipe; 15. Oil inlet pipe; 16. Baffle plate one; 17. Baffle plate two; 18. Check valve one; 19. Oil reservoir; 20. Elastic wear-resistant sealing ring; 21. Check valve two; 22. Slide rod; 23. Electric cylinder; 24. Slide groove; 25. Through hole; 26. Liquid passage; 27. Cooling oil discharge pipe. Detailed Implementation

[0019] Specific Implementation Example 1: Please refer to Figure 1-4 A long-life, large-displacement oil-lubricated plunger pump includes a pump housing 10; a pair of partitions 16 are fixedly connected to the inner side of the pump housing 10; an inner housing 13 is fixedly connected between the two partitions 16; a pump outlet 12 is fixedly connected to the left side of the inner housing 13; an oil inlet pipe 15 is fixedly connected to the right side of the inner housing 13; the pump outlet 12 and the oil inlet pipe 15 are connected to the inner side of the inner housing 13; the right end of the oil inlet pipe 15 passes through the right end face of the pump housing 10; a cooling oil injection pipe 14 is fixedly connected to the right side of the pump housing 10; the cooling oil injection pipe 14 is connected to the inner side of the pump housing 10; a pair of electric cylinders 23 are fixedly connected to the left end face of the right partition 16; a pair of partitions 17 are fixedly connected to the inner side of the inner housing 13; a pair of oil reservoirs 19 are fixedly connected to the inner end faces of the pair of partitions 17 respectively; the same A pair of partitions 17 of the same height are slidably connected to slide rods 22 on their inner sides; each slide rod 22 has a fluid passage 26 on its inner side; each slide rod 22 is fixedly connected to the output end of the adjacent electric cylinder 23; each inner housing 13 has a pair of grooves 24 on its surface so that the connection between the electric cylinder 23 and the slide rod 22 slides inside the grooves 24; each fluid passage 26 has a pair of one-way valves 21 embedded at both ends on its inner side; each partition 17 has a one-way valve 18 embedded at the corresponding oil storage block 19; by setting two pairs of one-way valves 18, two pairs of one-way valves 21, and two electric cylinders 23, the two slide rods 22 move in opposite directions, continuously inputting hydraulic oil into the pump outlet 12, realizing long-term large-displacement pumping, and at the same time, the residual hydraulic oil inside the oil storage block 19 can be used for oil lubrication, improving pumping efficiency and making it more practical.

[0020] Please see Figure 3 Each of the oil storage blocks 19 has an elastic wear-resistant sealing ring 20 snapped onto its inner end face to seal the liquid inside the oil storage block 19.

[0021] Please see Figure 3 The lower end of the pump housing 10 is fixedly connected to the support leg 11; the right side of the pump housing 10 is fixedly connected to the cooling oil discharge pipe 27.

[0022] Please see Figure 4 The right-side partition 16 has a pair of through holes 25 to connect the two sides of the right-side partition 16.

[0023] Please see Figure 3 The cooling oil injection pipe 14 is located on the upper right side of the pump housing 10; by setting an elastic wear-resistant sealing ring 20, the cooling oil and hydraulic oil can be isolated, preventing mutual contamination between the cooling oil and hydraulic oil, which is more practical.

[0024] During operation, cooling oil is injected into the inside of the cooling oil injection pipe 14 and fills the inside of the pump housing 10 through the through hole 25. Then, the cooling oil is discharged from the cooling oil discharge pipe 27. Before starting work, the two electric cylinders 23 are activated. The output end of the electric cylinders 23 moves to the left. Then, the hydraulic oil is filled between the right side partition 17 and the right side inner end face of the inner housing 13, as well as between the two oil storage blocks 19. This can prevent dry suction.

[0025] First, start the lower electric cylinder 23, so that the output end of the lower electric cylinder 23 is reset and drives the lower slide rod 22 to move to the right. At this time, the one-way valve 21 located at the right end of the lower slide rod 22 opens, and the hydraulic oil is discharged into the lower fluid passage 26. Then, the hydraulic oil passes through the narrower fluid passage 26 and pushes open the one-way valve 21 on the left side, and enters the oil storage block 19 on the left side.

[0026] After the lower slide bar 22 moves to the right, the lower electric cylinder 23 is activated again, causing the lower slide bar 22 to move to the left. This discharges the hydraulic oil in the left oil storage block 19 from the one-way valve 18 at the lower left end into the left end of the left partition 17, and then the hydraulic oil is discharged from the pump outlet 12. At the same time, the upper electric cylinder 23 is activated, causing the upper slide bar 22 to move to the right. This causes the upper and lower slide bars 22 to move in opposite directions, continuously outputting hydraulic oil to the left end face of the left partition 17 and the right side of the left end face of the inner housing 13, thus achieving long-term, high-volume pumping.

[0027] When only a large-displacement, high-speed oil pump is needed, simply start the electric cylinder 23 simultaneously and adjust the working speed of the output end of the electric cylinder 23 so that the two slide rods 22 move synchronously in the same direction, thereby increasing the oil displacement.

[0028] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0029] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0030] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A long-life, high-displacement oil-lubricated plunger pump, comprising a pump housing (10); a pair of partitions (16) are fixedly connected to the inner side of the pump housing (10); an inner housing (13) is fixedly connected between the two partitions (16); a pump outlet (12) is fixedly connected to the left side of the inner housing (13); an oil inlet pipe (15) is fixedly connected to the right side of the inner housing (13); the pump outlet (12) and the oil inlet pipe (15) are connected to the inner side of the inner housing (13); the right end of the oil inlet pipe (15) passes through the right end face of the pump housing (10); a cooling oil injection pipe (14) is fixedly connected to the right side of the pump housing (10); the cooling oil injection pipe (14) is connected to the inner side of the pump housing (10); characterized in that, It also includes a pair of electric cylinders (23) fixedly connected to the left end face of the right side partition 1 (16); a pair of partitions 2 (17) fixedly connected to the inner side of the inner shell (13); a pair of oil storage blocks (19) fixedly connected to the inner end faces of the pair of partitions 2 (17); sliding rods (22) slidably connected to the inner side of the pair of partitions 2 (17) at the same height; liquid channels (26) opened on the inner side of each sliding rod (22); each sliding rod (22) fixedly connected to the output end of the adjacent electric cylinder (23); a pair of sliding grooves (24) opened on the surface of each inner shell (13) so that the connection between the electric cylinder (23) and the sliding rod (22) slides inside the sliding grooves (24); a pair of one-way valves 2 (21) are embedded at both ends of the inner side of each liquid channel (26); a one-way valve 1 (18) is embedded at the corresponding oil storage block (19) of each partition 2 (17).

2. The long-life, large-displacement oil-lubricated plunger pump according to claim 1, characterized in that: Each of the oil storage blocks (19) has an elastic wear-resistant sealing ring (20) snapped onto its inner end face to seal the liquid inside the oil storage block (19).

3. The long-life, large-displacement oil-lubricated plunger pump according to claim 1, characterized in that: The lower end of the pump housing (10) is fixedly connected to the support leg (11); the right side of the pump housing (10) is fixedly connected to the cooling oil discharge pipe (27).

4. The long-life, large-displacement oil-lubricated plunger pump according to claim 1, characterized in that: The right-side partition 1 (16) has a pair of through holes (25) to connect the two sides of the right-side partition 1 (16).

5. The long-life, large-displacement oil-lubricated plunger pump according to claim 1, characterized in that: The cooling oil injection pipe (14) is located on the upper right side of the pump housing (10).

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