Improved piston pump lubricating oil recovery device

Abstract

An improved piston pump lubricating oil recovery device comprises a machine shell, a cylinder body is arranged on one side of the machine shell, a plurality of piston rods are arranged between the machine shell and the cylinder body, oil covers are arranged on the piston rods in a matched mode respectively, O-shaped rings are arranged in the oil covers, the same oil receiving box is arranged below the oil covers, a ventilation plug is installed on the machine shell in a communicated mode, and a recovery device is fixedly installed on the machine shell. The recovery device comprises a box body, a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve are communicated with the box body, the first one-way valve and the second one-way valve are connected with a ventilation plug through connecting pipes, and the third one-way valve is communicated with an oil receiving box. The lubricating oil recovery device is simple in structure and ingenious in conception, lubricating oil can be recovered without additional power equipment, and the volume in the box body is changed through the volume change in the machine shell, so that leaked lubricating oil is sucked and conveyed, the lubricating oil is conveyed back into the machine shell again, good lubrication is guaranteed, the operation cost is reduced, and the service life of the lubricating oil recovery device is prolonged. The energy is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of lubricating oil recovery, concretely relates to an improved piston pump lubricating oil recovery device. BACKGROUND

[0002] The piston pump is driven by power to make the piston reciprocate in the piston cylinder, so that the piston cylinder working volume periodically changes, and the piston pump realizes the suction and discharge of the conveying medium; the casing cavity of the piston pump in use will leak lubricating oil, and the lubricating oil lubricates the internal moving parts of the casing, if the leakage reaches a certain amount, the lubricating oil needs to be added, if the addition of the lubricating oil is ignored, the moving parts in the casing will be severely worn, and even the moving parts in the casing will be invalid, causing the piston pump to stop, therefore, the leaked lubricating oil needs to be supplemented in time, in order to avoid the waste of the leaked lubricating oil and supplement the lubricating oil of the piston pump in time, the improved piston pump lubricating oil recovery device is designed. SUMMARY

[0003] The utility model provides an improved piston pump lubricating oil recovery device to solve the defects in the prior art.

[0004] The utility model discloses a kind of improved piston pump lubricating oil recovery devices, to solve the defects in the prior art.

[0005] An improved piston pump lubricating oil recovery device, including casing, one side of casing is equipped with cylinder body, several piston rods are equipped between casing and cylinder body, oil cover is respectively equipped on piston rod, O-ring is equipped in oil cover, same oil receiving box is equipped below oil cover, air plug is installed in communication on casing, recovery device is fixedly installed on casing, and recovery device includes box body, first one-way valve, second one-way valve, third one-way valve and fourth one-way valve are installed in communication on box body, first one-way valve and second one-way valve are connected with air plug by connecting pipe respectively, third one-way valve is connected with oil receiving box in communication, and fourth one-way valve is connected with the inside of casing in communication.

[0006] An improved piston pump lubricating oil recovery device as described above, the box body is slidably installed with a piston plate.

[0007] An improved piston pump lubricating oil recovery device as described above, several telescopic rods are fixedly installed on the piston plate.

[0008] An improved piston pump lubricating oil recovery device as described above, vertical pipe is fixedly installed on the piston plate, circular pipe is fixedly installed in the box body, circular pipe is sleeved outside vertical pipe, rotating rod is rotatably installed in circular pipe by bearing, rotating rod extends into vertical pipe, several vertical plates are fixedly installed on one end of rotating rod, guide sliding slot is formed on the other end of rotating rod, push block is slidably installed in guide sliding slot, and push block is fixedly installed on vertical pipe.

[0009] An improved piston pump lubricating oil recovery device, one end of the push block is a slope and the other end is a hemisphere.

[0010] An improved piston pump lubricating oil recovery device, a crankshaft is rotatably installed in the casing through a bearing, the crankshaft is fixedly connected with an output shaft of a motor, a plurality of connecting rods are rotatably connected on the crankshaft, guide pistons are connected on the connecting rods, a groove in gas-tight sliding cooperation with the guide pistons is arranged in the casing, piston rods correspond to the guide pistons one by one and are fixedly connected together.

[0011] The improved piston pump lubricating oil recovery device has the advantages that the device is simple in structure and ingenious in design, the recovery of lubricating oil can be completed without the aid of additional power equipment, the volume of the box body is changed through the volume change of the casing, thereby the leakage lubricating oil is absorbed and transported, the lubricating oil is transported back into the casing, good lubrication is ensured, the operation cost is reduced, and energy saving and environmental protection are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0013] Figure 1 is a structural schematic view of the present application; Figure 2 is Figure 1 is a bottom view of the vertical plate in the device; Figure 3 is Figure 1 is a partial enlarged view of I in the device; Figure 4 is a schematic view of a piston pump; Figure 5 is a schematic view of a breather plug; Figure 6 is a schematic view of the inside of a casing.

[0014] Reference signs: 1, casing, 2, crankshaft, 3, connecting rod, 4, guide piston, 5, oil cover, 6, O-ring, 7, piston rod, 8, oil receiving box, 9, breather plug, 10, cylinder body, 11, first one-way valve, 12, second one-way valve, 13, third one-way valve, 14, fourth one-way valve, 15, box body, 20, piston plate, 30, telescopic rod, 50, vertical pipe, 51, circular pipe, 52, rotating rod, 53, vertical plate, 54, guide sliding groove, 55, push block. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] An improved piston pump lubricating oil recovery device, as shown in Figure 1 、 2 3, 4, 5, 6, comprises a casing 1, one side of the casing 1 is provided with a cylinder body 10, the cylinder body 10 has working pistons and other components, which are mature technologies and will not be described in detail, a plurality of piston rods 7 are arranged between the casing 1 and the cylinder body 10, the piston rods 7 are connected with the working pistons in the cylinder body 10, and an oil cover 5 is arranged on each of the piston rods 7, an O-shaped ring 6 is arranged in the oil cover 5, a same oil receiving box 8 is arranged below the oil cover 5, a breather plug 9 is installed in communication on the casing 1, the breather plug 9 has three air holes, a recovery device is fixedly installed on the casing 1, the recovery device comprises a box body 15, the box body 15 is fixedly installed on the casing 1, a first one-way valve 11, a second one-way valve 12, a third one-way valve 13 and a fourth one-way valve 14 are installed in communication on the box body 15, the first one-way valve 11 and the second one-way valve 12 are connected with the breather plug 9 through connecting pipes, the connecting pipes correspond to the air holes on the breather plug 9, the third one-way valve 13 is connected with the oil receiving box 8 in communication, and the fourth one-way valve 14 is connected with the inside of the casing 1 in communication. The utility model has the advantages of simple structure, ingenious design, and can complete the recovery of lubricating oil without the help of additional power equipment, the volume of the box body 15 changes through the volume change of the casing 1, thereby realizing the suction and transportation of the leaked lubricating oil, the lubricating oil is transported back into the casing 1, good lubrication is ensured, the operation cost is reduced, and energy saving and environmental protection are achieved. When in use, the leaked lubricating oil of the casing 1 falls into the oil receiving box 8, the volume of the casing 1 changes periodically when the piston pump operates, the volume of the box body 15 also changes through the breather plug 9, the connecting pipes, the first one-way valve 11 and the second one-way valve 12, the first one-way valve 11 and the second one-way valve 12 separate the suction and exhaust actions of the casing 1, the exhaust can only pass through the first one-way valve 11, and the suction can only pass through the second one-way valve 12, when the second one-way valve 12 sucks air from the box body 15, the first one-way valve 11 and the fourth one-way valve 14 are in the closed state, the third one-way valve 13 sucks the lubricating oil in the oil receiving box 8 into the box body 15, when the first one-way valve 11 exhausts the gas in the casing 1 into the box body 15, the second one-way valve 12 and the third one-way valve 13 are in the closed state, the recovered lubricating oil is pressed back into the casing 1 through the fourth one-way valve 14, and the whole transportation link is completed.

[0017] Specifically, as shown in the drawings, the box 15 is provided with a piston plate 20 which is slidably installed in the box 15 in airtight manner. The outer periphery of the piston plate 20 is slidably connected with the inner wall of the box 15 in airtight manner. The piston plate 20 divides the box 15 into two cavities, so that the suction and discharge of the gas and the lubricating oil are independent, avoiding the lubricating oil entering the first one-way valve 11 and the second one-way valve 12 and affecting the normal work.

[0018] Specifically, as shown in the drawings, the piston plate 20 is provided with a plurality of telescopic rods 30 which are fixedly installed on the piston plate 20. The fixed end of the telescopic rod 30 is fixedly connected with the inner wall of the box 15, and the movable end of the telescopic rod 30 is fixedly connected with the top of the piston plate 20. The telescopic rod 30 provides a guide for the movement of the piston plate 20, so that the piston plate 20 moves more stably.

[0019] Further, as shown in the drawings, the piston plate 20 is provided with a vertical pipe 50 which is fixedly installed on the piston plate 20. The box 15 is provided with a circular pipe 51 which is fixedly installed in the box 15. The circular pipe 51 is sleeved on the outside of the vertical pipe 50. The outer periphery of the circular pipe 51 is fixedly connected with one end of a support rod. The other end of the support rod is fixedly connected with the inner wall of the box 15. A rotating rod 52 is rotatably installed in the circular pipe 51 through a bearing. The rotating rod 52 extends into the vertical pipe 50. The rotating rod 52, the circular pipe 51 and the vertical pipe 50 are coaxially arranged. A plurality of vertical plates 53 are fixedly installed on one end of the rotating rod 52. The other end of the rotating rod 52 is provided with a guide sliding groove 54 which is arranged on the outer periphery of the rotating rod 52. The guide sliding groove 54 is in a wave shape and is connected at its head and tail. A push block 55 is slidably installed in the guide sliding groove 54. The push block 55 is fixedly installed on the vertical pipe 50. The volume of the box 15 periodically changes, so that the piston plate 20 reciprocatingly slides up and down. When the piston plate 20 slides, the vertical pipe 50 and the push block 55 move together. The push block 55 provides a pushing force to the side wall of the guide sliding groove 54. The rotating rod 52 rotates under the interaction of the guide sliding groove 54 and the push block 55, thereby driving the vertical plate 53 to revolve. The vertical plate 53 rotates and pushes the lubricating oil to move, so that the lubricating oil is more easily discharged from the fourth one-way valve 14.

[0020] Further, as shown in the drawings, one end of the push block 55 is in an inclined surface, and the other end of the push block 55 is in a semispherical shape. The one end of the push block 55 is in an inclined surface, and the other end of the push block 55 is in a semispherical shape, so that the push block 55 passes through the corner of the guide sliding groove 54 more smoothly, avoiding the situation of being stuck.

[0021] Further, as shown in the figure, the crankshaft 2 is rotatably installed in the casing 1 through a bearing, the crankshaft 2 is fixedly connected with the output shaft of the motor, a plurality of connecting rods 3 are rotatably connected on the crankshaft 2, the connecting rods 3 are connected with the guide pistons 4, the crankshaft 2 and the connecting rods 3 are a crank connecting rod mechanism, which is a mature technology and will not be described in detail, the casing 1 is provided with a groove in gas-tight sliding cooperation with the guide pistons 4, the groove is communicated with the outside and is closed through an oil cover 5, the oil cover 5 is provided with an O-ring seal, a piston rod 7 is in one-to-one correspondence with the guide pistons 4 and is fixedly connected together. The motor drives the crankshaft 2 to rotate, the crankshaft 2 drives the connecting rods 3 to rotate, the connecting rods 3 convert the rotary motion of the crankshaft 2 into the linear motion of the guide pistons 4, since the working cavity of the casing 1 is sealed, the reciprocating operation of the guide pistons 4 will cause the motion of the gas in the casing 1, and through the air vent plug 9, the first one-way valve 11 and the second one-way valve 12 complete the action of inhaling or exhausting, so as to realize the periodic change of the air pressure in the box body 15.

[0022] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An improved piston pump lubricating oil recovery device, comprising a housing (1), a cylinder body (10) provided on one side of the housing (1), a plurality of piston rods (7) provided between the housing (1) and the cylinder body (10), oil caps (5) provided on the piston rods (7), an O-ring (6) provided inside the oil caps (5), and an oil receiving box (8) provided below the oil caps (5), characterized in that: The air vent plug (9) is communicated and installed on the shell (1), the recovery device is fixedly installed on the shell (1), the recovery device comprises a box body (15), the first one-way valve (11), the second one-way valve (12), the third one-way valve (13) and the fourth one-way valve (14) are communicated and installed on the box body (15), the first one-way valve (11) and the second one-way valve (12) are connected with the air vent plug (9) through the connecting pipe, the third one-way valve (13) is connected with the oil collecting box (8), and the fourth one-way valve (14) is connected with the inside of the shell (1).

2. An improved piston pump lubricating oil recovery device as defined in claim 1 wherein: The piston plate (20) is airtightly and slidably installed in the box body (15).

3. An improved piston pump lubricating oil recovery device as defined in claim 2 wherein: A plurality of telescopic rods (30) are fixedly installed on the piston plate (20).

4. An improved piston pump lubricating oil recovery device as defined in claim 2 wherein: The vertical pipe (50) is fixedly installed on the piston plate (20), the circular pipe (51) is fixedly installed in the box body (15), the circular pipe (51) is sleeved outside the vertical pipe (50), the rotating rod (52) is rotatably installed in the circular pipe (51) through the bearing, the rotating rod (52) extends into the vertical pipe (50), a plurality of vertical plates (53) are fixedly installed on one end of the rotating rod (52), the guide sliding groove (54) is formed in the other end of the rotating rod (52), the push block (55) is slidably installed in the guide sliding groove (54), and the push block (55) is fixedly installed on the vertical pipe (50).

5. An improved piston pump lubricating oil recovery device as defined in claim 4 wherein: One end of the push block (55) is a slope, and the other end is a hemisphere.

6. An improved piston pump lubricating oil recovery device as defined in claim 1 wherein: The crankshaft (2) is rotatably installed in the shell (1) through the bearing, the crankshaft (2) is fixedly connected with the output shaft of the motor, a plurality of connecting rods (3) are rotatably connected with the crankshaft (2), the connecting rods (3) are connected with the guide pistons (4), the shell (1) is provided with a groove in airtight sliding cooperation with the guide pistons (4), the piston rods (7) correspond to the guide pistons (4) one by one and are fixedly connected together.

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