Oil dialysis system of electric hydraulic operating table

Abstract

The utility model provides an electric hydraulic operating table oil dialysis system which comprises an oil tank, an oil pump, an operating table hydraulic system, an oil barrel and a filtering device which are sequentially connected through a pipeline to form a closed loop, and further comprises a control unit, the oil barrel comprises a barrel body, an oil inlet pipe is arranged at the top of the barrel body, and an inverted-cone-shaped centrifugal mechanism is arranged below the oil inlet pipe; an oil outlet pipe is arranged at the bottom of the oil drum; the centrifugal mechanism comprises a conical shell and a spiral blade, the spiral blade is located in the conical shell, the outer edge of the spiral blade abuts against the side wall of the conical shell and is matched with the conical shell to form a spiral oil duct, an upper port of the spiral oil duct is communicated with the oil inlet pipe, a lower port is located in the lower end of the conical shell, a slag outlet is formed in the lower portion of the side wall of the conical shell, and a precipitation tank is arranged below the slag outlet. According to the system, oil is primarily purified through the oil drum, most particles are removed, the purification effect is enhanced, the filtering burden of the filtering device is reduced, the loss of the filter element is reduced, and the replacement frequency of the filter element is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil purification, in particular to an electric hydraulic operating table oil dialysis system. Background Art

[0002] With the development of science and technology, the operating table has evolved from manual drive to electric-controlled hydraulic drive, which is more convenient and labor-saving to operate. The electric hydraulic operating table includes a hydraulic system, which enables the operating table to perform actions such as lifting and lowering, adjusting the angle, etc.

[0003] In order to ensure the normal operation of the hydraulic system and reduce the failure rate, certain requirements are put forward for the cleanliness of the hydraulic oil used in the hydraulic system. Among them, the content of solid particles in the oil is the most important. The solid particles in the oil will cause wear to the hydraulic equipment during use and reduce the service life of the hydraulic equipment. In serious cases, it will cause equipment failure and directly affect the operation of the hydraulic system.

[0004] To this end, the existing patent CN205533561U provides an operating table oil dialysis system, which uses a filtering device to filter the oil used in the hydraulic system of the operating table, removes particulate matter contained in the contaminated oil, and uses the uncontaminated oil after filtration as stand-by oil, thereby achieving oil purification and reuse.

[0005] However, in this system, used oil is directly passed into the filter device for particle filtering, which places a heavy burden on the filter device and easily leads to clogging and failure of the filter element, increases the frequency of filter element replacement, and increases costs. Utility Model Content

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an electric hydraulic operating table oil dialysis system.

[0007] The technical solution of this utility model is as follows:

[0008] An electric hydraulic operating table oil dialysis system, comprising an oil tank, an oil pump, an operating table hydraulic system, an oil barrel and a filtering device which are sequentially connected by pipelines to form a closed loop, and also comprises a control unit, wherein the oil barrel comprises a barrel body, an oil inlet pipe is arranged on the top of the barrel body, an inverted cone centrifugal mechanism is arranged below the oil inlet pipe, and an oil outlet pipe is arranged at the bottom of the oil barrel;

[0009] The centrifugal mechanism includes a conical shell and a spiral blade. The spiral blade is located in the conical shell, and its outer edge abuts against the side wall of the conical shell and cooperates with the conical shell to form a spiral oil channel. The upper port of the spiral oil channel is connected to the oil inlet pipe, and the lower port is located at the lower end of the conical shell. A slag outlet is provided at the lower part of the side wall of the conical shell, and a sedimentation tank is provided below the slag outlet.

[0010] After the used oil enters the oil barrel, it first passes through a centrifugal mechanism. The oil flows in a spiral in the centrifugal mechanism. Under the action of centrifugal force, the solid particles in the oil move along the inner surface of the conical shell. At the lower part of the centrifugal mechanism, part of the oil carrying solid particles on the outer side of the spiral oil passage flows out from the slag outlet and enters the sedimentation tank below, while the other part of the oil flows out from the lower port of the spiral oil passage. In this part of the oil, since some solid particles have been removed by centrifugation, the content of solid particles is relatively low.

[0011] The oil entering the sedimentation tank is allowed to stand still to precipitate the solid particles. As the oil in the tank continues to increase, the clean oil on the upper layer will overflow from the sedimentation tank and enter the lower part of the oil barrel, where it is mixed with the oil flowing out from the lower port of the spiral oil passage and then pumped into the filtering device for further filtration.

[0012] The oil dialysis system of the present application preliminarily purifies the solid particles in the used oil through the oil barrel, removing most of the particles and large-sized particles in the oil. Then, the preliminarily purified oil is passed into the filtering device for secondary purification, which not only enhances the purification effect, but also reduces the filtering burden of the filtering device, reduces the loss of the filter element, prolongs the service life of the filter element, and reduces the frequency of filter element replacement.

[0013] In the above solution, a spiral oil groove is provided on the inner side wall of the conical shell corresponding to the spiral oil passage, and the slag outlet is opened at the lower end of the spiral oil groove. When the oil flows in the spiral oil passage, the solid particles move outward under the action of centrifugal force and enter the spiral oil groove, and spiral along the spiral oil groove with the oil. The solid particles gradually accumulate in the spiral oil groove and finally flow out from the slag outlet.

[0014] In order to enable the solid particles to flow out of the conical shell more smoothly, the bottom surface of the spiral oil groove protrudes from the outer side wall of the conical shell, so that the position of the oil flow in the spiral oil groove is outside the conical shell. Then, this part of the oil can directly flow out of the conical shell from the slag outlet along its spiral direction.

[0015] Usually, the solid particles will fall on the spiral blade and move under the action of gravity, and at the same time, under the action of centrifugation, they will move outward along the spiral blade. In view of this property, the present application aligns and connects the lower side wall edge of the spiral oil groove with the outer edge of the spiral blade to facilitate the smooth entry of solid particles into the spiral oil groove.

[0016] In order to avoid oil accumulation at the lower part of the centrifugal mechanism, which affects the spiral flow of the oil to generate centrifugal force, the diameter of the lower port of the spiral oil passage is greater than or equal to the diameter of the oil inlet pipe to ensure the smooth flow of the oil.

[0017] Preferably, the slag outlet diameter is smaller than the diameter of the oil inlet pipe. As a result, in the flowing oil fluid, only a small part of the oil fluid is used to carry solid particles into the sedimentation tank, realizing the separation and purification of solid particles from the overall oil fluid. Moreover, it avoids a large amount of oil fluid flowing into the sedimentation tank and agitating the oil fluid in the sedimentation tank, thus affecting the sedimentation effect.

[0018] Preferably, the oil outlet directions of the slag outlet and the lower port of the spiral oil passage are opposite, so as to separate the oil fluid carrying solid particles and the purified oil fluid by a certain distance and flow into the sedimentation tank and the lower space of the oil barrel respectively.

[0019] Furthermore, a slag discharge channel is provided at the slag outlet, and the slag discharge channel extends into the sedimentation tank, so that the oil fluid carrying solid particles can enter the sedimentation tank more smoothly. When it flows out of the slag outlet, it avoids part of it hanging on the outer surface of the conical shell and flowing, flowing to the lower end of the conical shell and mixing with the purified oil fluid, which is not conducive to discharging the solid particles into the sedimentation tank.

[0020] In this application, the sedimentation tank is fixed on the side wall of the oil barrel, and the bottom surface of the sedimentation tank extends obliquely downward towards the side wall, so as to converge the solid particles precipitated in the sedimentation tank at the position where the bottom surface of the sedimentation tank is connected to the side wall of the oil barrel, facilitating cleaning.

[0021] In order to facilitate the cleaning of the precipitated solid particles, a slag discharge port is provided on the side wall of the oil barrel corresponding to the sedimentation tank, which communicates with the sedimentation tank, and a sealing cover is provided outside the slag discharge port. When the solid particles precipitate to a certain amount, the sealing cover is opened to discharge the solid particles from the slag discharge port and clean the sedimentation tank.

[0022] An oil fluid dialysis system for an electric hydraulic operating table provided by the present utility model preliminarily purifies the solid particles in the used oil fluid through the oil barrel, removes most of the particles and large-sized particles in the oil fluid, and then passes the preliminarily purified oil fluid into a filtering device for secondary purification. This not only enhances the purification effect, but also reduces the filtering burden of the filtering device, reduces the loss of the filter element, prolongs the service life of the filter element, and reduces the frequency of filter element replacement. Description of the Drawings

[0023] In the drawings:

[0024] Figure 1 is a schematic diagram of an oil fluid dialysis system for an electric hydraulic operating table;

[0025] Figure 2 is a sectional view of the oil barrel;

[0026] Figure 3 is a schematic diagram of the centrifugal mechanism.

[0027] The components represented by the reference numerals in the drawings are:

[0028] 1. Fuel tank; 2. Oil pump; 3. Hydraulic system of operating table; 4. Oil barrel; 41. Barrel body; 42. Inlet oil pipe; 43. Centrifugal mechanism; 431. Conical shell; 432. Spiral blade; 433. Spiral oil passage; 434. Slag discharge port; 435. Spiral oil groove; 436. Slag discharge passage; 44. Outlet oil pipe; 45. Precipitation tank; 451. Slag discharge opening; 452. Sealing cover; 5. Filter device; 6. Control unit. Detailed implementation manner

[0029] As Figure 1 shown, an oil fluid dialysis system for an electric hydraulic operating table provided by an embodiment of the present utility model is used to purify the hydraulic oil in the hydraulic system of the operating table, improve the service life of the hydraulic oil and hydraulic equipment, reduce the frequency of replacing the filter element of the filter device at the same time, reduce the labor intensity while reducing the cost.

[0030] The oil fluid dialysis system for the electric hydraulic operating table includes a fuel tank 1, an oil pump 2, a hydraulic system 3 of the operating table, an oil barrel 4 and a filter device 5 that are sequentially connected through pipelines to form a closed loop, and further includes a control unit 6. Among them, the fuel tank 1, the oil pump 2, the hydraulic system 3 of the operating table, the filter device 5 and the control unit 6, as well as the connection relationship, control relationship and operation relationship between them, etc., are all prior arts and will not be described in detail here. Specifically, reference can be made to the existing patent CN205533561U.

[0031] Please refer to Figure 2 and Figure 3 shown, the oil barrel 4 in this embodiment includes a barrel body 41. An inlet oil pipe 42 is provided at the top of the barrel body 41. A downward conical centrifugal mechanism 43 is provided below the inlet oil pipe 42. The centrifugal mechanism 43 is fixed on the barrel body 41. In this embodiment, the centrifugal mechanism 43 is fixed at the top of the barrel body 41. An outlet oil pipe 44 is provided at the bottom of the oil barrel 4.

[0032] The centrifugal mechanism 43 specifically includes a conical shell 431 and a spiral blade 432. The upper end of the conical shell 431 is connected to the top of the barrel body 41, and preferably is hermetically connected to avoid oil leakage. The spiral blade 432 is located inside the conical shell 431. The outer edge of the spiral blade 432 abuts against the side wall of the conical shell 431 and cooperates with the conical shell 431 to form a spiral oil passage 433. The upper port of the spiral oil passage 433 is communicated with the inlet oil pipe 42, and the lower port is located at the lower end of the conical shell 431. In this embodiment, a column is preferably further provided at the center position inside the spiral blade 432. The top of the column is connected to the top of the barrel body 41, which is used to support the spiral blade 432 and also plays a role in sealing the center of the spiral blade 432, so that the oil fluid flows on the spiral blade 432 uniformly.

[0033] The lower part of the side wall of the conical shell 431 is provided with a slag outlet 434, and a sedimentation tank 45 is arranged below the slag outlet 434. A large number of solid particles carried in the outer oil in the spiral oil passage 433 flow out from the slag outlet 434 and enter the sedimentation tank 45 for sedimentation. The oil near the inner side carries few or no solid particles and enters the bottom space of the oil barrel 4 through the lower port of the spiral oil passage 433, and is stored separately from the oil carrying a large number of solid particles.

[0034] A spiral oil groove 435 is also provided on the inner side wall of the conical shell 431 corresponding to the spiral oil passage 433, and the slag outlet 434 is opened at the lower end of the spiral oil groove 435. When the oil flows in the spiral oil passage 433, the solid particles move outward under the action of centrifugal force and enter the spiral oil groove 435, and flow spirally along the spiral oil groove 435 with the oil. The solid particles gradually accumulate in the spiral oil groove 435 and finally flow out from the slag outlet 434. The arrangement of the spiral oil groove 435 not only facilitates the convergence of solid particles, but also reduces the trickle formed by the oil flow, which causes the solid particles to be rolled back to other positions of the spiral oil passage 433, resulting in a reduction in the centrifugal purification effect.

[0035] In order to enable the solid particles to flow out of the conical shell 431 more smoothly and enter the sedimentation tank 45, the bottom surface of the spiral oil groove 435 protrudes from the outer side wall of the conical shell 431, that is, as Figure 2 shown, a groove structure protruding from the conical shell 431 is formed by stamping or casting. In this structure, the oil flow position in the spiral oil groove 435 is outside the conical shell 431, and at the same time, the slag outlet 434 is correspondingly located outside the conical shell 431, so that the oil in the spiral oil groove 435 directly flows out of the conical shell 431 from the slag outlet 434 along its spiral direction without having to flow out of the slag outlet 434 through centrifugal action, avoiding the solid particles missing the slag outlet 434 under the action of the inertial force of the oil flow and improving the centrifugal purification effect of the centrifugal mechanism 43.

[0036] In this embodiment, the slag outlet 434 is located outside the conical shell 431, the cross section of the slag outlet 434 extends along the radial direction of the conical shell 431, and the normal direction of the slag outlet 434 is tangent to the outer surface of the conical shell 431.

[0037] In this embodiment, the edge of the lower side wall of the spiral oil groove 435 is preferably aligned and connected with the outer edge of the spiral blade 432. Since the solid particles usually fall on the spiral blade 432 and move under the action of gravity, and at the same time move outward along the spiral blade 432 under the action of centrifugal force, the alignment and connection of the edge of the lower side wall of the spiral oil groove 435 with the outer edge of the spiral blade 432 is beneficial to the smooth entry of solid particles into the spiral oil groove 435.

[0038] In order to avoid oil accumulation at the lower part of the centrifugal mechanism 43, which affects the spiral flow of the oil to generate centrifugal force, the caliber of the lower port of the spiral oil passage 433 is greater than or equal to the caliber of the oil inlet pipe 42 to ensure the smooth flow of the oil in the spiral oil passage 433.

[0039] In order to enable only a small part of the flowing oil to carry solid particles into the sedimentation tank 45 to achieve the separation and purification of solid particles from the overall oil, and to prevent a large amount of oil from flowing into the sedimentation tank 45 and agitating the oil in the sedimentation tank 45, thus affecting the sedimentation effect, the diameter of the slag outlet 434 is smaller than that of the oil inlet pipe 42.

[0040] In order to separate the oil carrying solid particles from other oil by a certain distance and make them flow into the sedimentation tank 45 and the lower space of the oil barrel 4 respectively to avoid mixing, the oil outlet directions of the slag outlet 434 and the lower port of the spiral oil passage 433 are opposite. It should be explained here that the oil outlet direction of the lower port of the spiral oil passage 433 is not vertically downward, but is inclined downward due to the action of the spiral blade 432.

[0041] Furthermore, in order to enable the oil carrying solid particles to enter the sedimentation tank 45 more smoothly, and to prevent part of it from flowing on the outer surface of the conical shell 431 when flowing out of the slag outlet 434 and mixing with the purified oil at the lower end of the conical shell 431, which is not conducive to discharging the solid particles into the sedimentation tank 45, a slag discharge passage 436 is also provided at the slag outlet 434, and the slag discharge passage 436 extends from the slag outlet 434 into the sedimentation tank 45.

[0042] In this embodiment, the sedimentation tank 45 is fixed on the side wall of the oil barrel 4, and the bottom surface of the sedimentation tank 45 extends obliquely downward towards the side wall, so as to facilitate the accumulation of the solid particles sedimented in the sedimentation tank 45 at the position where the bottom surface of the sedimentation tank 45 is connected to the side wall of the oil barrel 4, which is convenient for cleaning.

[0043] In order to facilitate the cleaning of the sedimented solid particles, a slag discharge port 451 is provided on the side wall of the oil barrel 4 corresponding to the position of the sedimentation tank 45, which communicates with the sedimentation tank 45, and a sealing cover 452 is provided outside the slag discharge port 451. When the solid particles sediment to a certain amount, the sealing cover 452 is opened to discharge the solid particles from the slag discharge port 451 and clean the sedimentation tank 45.

[0044] In an electric hydraulic operating table oil dialysis system provided by the present utility model, the used oil enters the centrifugal mechanism 43 through the oil inlet pipe 42, and the oil flows spirally in the centrifugal mechanism 43. Under the action of centrifugal force, the solid particles in the oil move along the inner surface of the conical shell 431. When flowing to the lower part of the centrifugal mechanism 43, part of the oil near the outer side of the spiral oil passage 433 carries a large amount of solid particles and flows out from the slag outlet 434 and enters the lower sedimentation tank 45, while other part of the oil flows out from the lower port of the spiral oil passage 433. In this part of the oil, since the particles have been removed by centrifugation, it contains a small amount of or no solid particles. This part of the oil enters the lower space of the oil barrel 4 and finally flows from the oil outlet pipe 44 to the filtering device 5.

[0045] The oil fluid entering the sedimentation tank 45 is allowed to stand still, causing the solid particles to settle. As the oil fluid in the tank continuously increases, the clean oil fluid on the upper layer will overflow from the sedimentation tank 45 and enter the lower part of the oil barrel 4, where it is mixed with the oil fluid flowing out from the lower port of the spiral oil passage 433, and then is pumped into the filtering device 5 for further filtration.

[0046] For the oil fluid dialysis system of the electric hydraulic operating table in this application, the solid particles in the used oil fluid are preliminarily separated and purified through the oil barrel 4, removing most of the particles and large-sized particles in the oil fluid. Then, the preliminarily purified oil fluid is passed into the filtering device 5 for secondary purification, which not only enhances the purification effect, but also reduces the filtering burden on the filtering device 5, reduces the loss of the filter element, prolongs the service life of the filter element, and reduces the filter element replacement frequency.

Claims

1. An electric hydraulic operating table oil dialysis system, comprising an oil tank (1), an oil pump (2), an operating table hydraulic system (3), an oil barrel (4) and a filtering device (5) which are sequentially connected by pipelines to form a closed loop, and also comprises a control unit (6), characterized in that: The oil barrel (4) comprises a barrel body (41), the top of the barrel body (41) is provided with an oil inlet pipe (42), an inverted cone-shaped centrifugal mechanism (43) is provided below the oil inlet pipe (42), and the bottom of the oil barrel (4) is provided with an oil outlet pipe (44); The centrifugal mechanism (43) comprises a conical shell (431) and a spiral blade (432). The spiral blade (432) is located in the conical shell (431), and its outer edge abuts against the side wall of the conical shell (431). The spiral blade (432) cooperates with the conical shell (431) to form a spiral oil passage (433). The upper port of the spiral oil passage (433) is connected to the oil inlet pipe (42), and the lower port is located at the lower end of the conical shell (431). A slag outlet (434) is provided at the lower part of the side wall of the conical shell (431), and a sedimentation tank (45) is provided below the slag outlet (434).

2. The oil dialysis system for an electric hydraulic operating table according to claim 1, characterized in that: A spiral oil groove (435) is provided on the inner side wall of the conical shell (431) corresponding to the spiral oil passage (433), and the slag outlet (434) is opened at the lower end of the spiral oil groove (435).

3. The oil dialysis system for an electric hydraulic operating table as claimed in claim 2, characterized in that: The bottom surface of the spiral oil groove (435) protrudes from the outer side wall of the conical shell (431).

4. The oil dialysis system for an electric hydraulic operating table as claimed in claim 3, characterized in that: The lower side wall edge of the spiral oil groove (435) is aligned and connected with the outer edge of the spiral blade (432).

5. The oil dialysis system for an electric hydraulic operating table according to claim 1, characterized in that: The diameter of the lower port of the spiral oil passage (433) is greater than or equal to the diameter of the oil inlet pipe (42).

6. The oil dialysis system for an electric hydraulic operating table as claimed in claim 5, characterized in that: The diameter of the slag outlet (434) is smaller than the diameter of the oil inlet pipe (42).

7. The oil dialysis system for an electric hydraulic operating table as claimed in claim 6, characterized in that: The oil outlet directions of the slag outlet (434) and the lower port of the spiral oil passage (433) are opposite.

8. An electric hydraulic operating table oil dialysis system according to any one of claims 1 to 7, characterized in that: A slag discharge channel (436) is provided at the slag discharge port (434), and the slag discharge channel (436) extends into the sedimentation tank (45).

9. The oil dialysis system for an electric hydraulic operating table according to claim 1, characterized in that: The sedimentation tank (45) is fixed on the side wall of the oil barrel (4), and the bottom surface of the sedimentation tank (45) extends downwardly and obliquely toward the side wall.

10. The oil dialysis system for an electric hydraulic operating table according to claim 9, characterized in that: A slag discharge port (451) is provided on the side wall of the oil barrel (4) at a position corresponding to the sedimentation tank (45) and is connected to the sedimentation tank (45). A sealing cover (452) is provided outside the slag discharge port (451).

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