Hydraulic power unit

Abstract

The utility model discloses a hydraulic power unit, which belongs to the technical field of hydraulic power units, and comprises an oil tank, a liquid return pipe and a liquid outlet pipe which are relatively fixed on one side of the oil tank, and two liquid baffles which are oppositely arranged at a liquid outlet on the liquid return pipe, a liquid outlet in the liquid return pipe is located between the two liquid baffles, the liquid outlet end of the liquid return pipe is in an L shape, and the liquid outlet of the liquid return pipe faces the inner wall of the oil tank adjacent to the liquid return pipe. According to the utility model, two groups of oppositely arranged separators, liquid baffles, filtering parts and other structures are matched for use, and a plurality of inclined partition plates are transversely arranged between the liquid return pipe and the liquid outlet pipe, so that the flow rate of liquid discharged from the liquid return pipe is buffered, and the influence of the flow rate of the liquid on oil sludge precipitation is reduced; a magnetic speed regulator is matched to drive the multi-stage magnetic ring and the filter cover to quickly rotate through magnetic force, and centrifugal force is utilized to prevent the oil sludge from being attached to the filter cover, so that the probability of blockage of the filter cover is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic power units, and specifically relates to a hydraulic power unit. Background Art

[0002] The hydraulic power unit is the power source in the hydraulic system. It is connected to several hydraulic cylinders through a pipeline system and controls the actions of multiple groups of valves. Among them, the fuel tank, oil pump, and accumulator form an independent and sealed power oil source system, and the PLC control system is equipped to control the flow direction, stop, and movement of the hydraulic oil in each oil circuit. During the long-term use of the hydraulic oil in the hydraulic power unit, it is prone to generate sludge due to high-temperature oxidation. After a certain amount of sludge accumulates, it will affect the normal operation of the hydraulic power unit.

[0003] The existing patent application number: 202322143545.5 discloses a hydraulic power unit that is easy to maintain. Through the heat dissipation effect of the semiconductor cooler, the speed of the above-mentioned hydraulic oil generating sludge is effectively delayed, and the sludge can be discharged through the sewage outlet. Moreover, through the combined use of the liquid level sensor and the warning light, when the liquid level of the hydraulic oil is low to the critical value, the user is reminded to replenish the liquid or repair the oil leakage by the constant lighting of the warning light. In the above existing technology, during the use of the device, the impact force generated by the high-pressure hydraulic oil flowing back into the fuel tank will affect the sedimentation effect of the sludge, resulting in a large amount of sludge accumulating on the filter screen, which is easy to cause the filter screen to be blocked. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic power unit to solve the problem that the impact force generated by the high-pressure hydraulic oil flowing back into the fuel tank affects the sedimentation effect of the sludge, resulting in a large amount of sludge accumulating on the filter screen and easily causing the filter screen to be blocked as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydraulic power unit provided by the utility model includes a fuel tank, a return pipe and a liquid outlet pipe that are relatively fixed on one side of the fuel tank. The hydraulic power unit further includes:

[0007] Two liquid baffle plates that are relatively arranged at the liquid outlet of the return pipe. The liquid outlet of the return pipe is located between the two liquid baffle plates. The liquid outlet end of the return pipe is in an L shape, and the liquid outlet of the return pipe faces the inner wall of the adjacent fuel tank.

[0008] A partition member that is vertically relatively arranged in the fuel tank for buffering the liquid flow rate. The partition member includes a plurality of inclined partition plates that are vertically and juxtaposed and fixed in the fuel tank.

[0009] A filtering part for filtering and purifying the liquid entering the liquid outlet pipe.

[0010] The filtering part includes:

[0011] A limiting ring surrounding the liquid inlet of the liquid outlet pipe, and the liquid inlet on the liquid outlet pipe is located on the inner wall of the fuel tank.

[0012] A multi-stage magnetic ring rotatably sleeved outside the limiting ring.

[0013] A filter cover fixed on the multi-stage magnetic ring for filtering sludge.

[0014] A magnetic speed regulator fixedly sleeved outside the liquid outlet pipe for magnetically driving the rotation of the multi-stage magnetic ring.

[0015] Further, the inclined partition is located between the liquid return pipe and the liquid outlet pipe, and the inclined partitions are equidistantly distributed in the fuel tank.

[0016] Further, the hydraulic power unit further includes:

[0017] Two connecting parts oppositely arranged on the fuel tank.

[0018] An installation support plate arranged on the connecting part.

[0019] A support seat fixed on the installation support plate, the two installation support plates are vertically oppositely distributed on the support seat, and the fuel tank is located between the two installation support plates.

[0020] Further, the connecting part is used for detachably installing the fuel tank on the support seat, and the two connecting parts are respectively located at the top and bottom of the fuel tank.

[0021] Further, the connecting part includes:

[0022] A limiting seat fixed on the fuel tank.

[0023] A connecting shaft rotatably arranged in the limiting seat.

[0024] Two installation screws oppositely fixed on the connecting shaft for stably installing on the installation support plate.

[0025] A limiting nut threadedly sleeved on the installation screw for limiting and fixing the installation screw.

[0026] Further, the hydraulic power unit further includes two drain pipes respectively fixedly inserted at the top and bottom of the fuel tank, solenoid valves are installed on the drain pipes, and the top and bottom of the inner wall of the fuel tank are both designed as arc surfaces.

[0027] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0028] 1. By the combined use of structures such as two sets of oppositely arranged partition members, liquid baffle plates and filtering parts, several inclined partition plates are initially arranged horizontally between the liquid return pipe and the liquid outlet pipe to buffer the impact force of the liquid discharged from the liquid return pipe, so that the liquid flowing towards the liquid outlet pipe can be calmed down as much as possible, enabling the sludge mixed in the liquid to precipitate quickly, reducing the probability of sludge adhering to the filter cover. Then, in cooperation with the magnetic force speed regulator, the multi-stage magnetic ring and the filter cover are driven to rotate rapidly by magnetic force, and the centrifugal force is used to prevent sludge from adhering to the filter cover, further reducing the probability of the filter cover being blocked, and being able to maintain the high-efficiency filtering effect of the filter cover for a long time;

[0029] 2. By the combined use of the installation area formed by the connection part and the oppositely arranged installation support plates, after the installation screws on both sides of the fuel tank are respectively sleeved in the through holes on the two installation support plates, the limit nuts are then screwed to make them abut against the surface of the installation support plates, so that the stress acting on each other is formed among the limit seats, the installation screws and the installation support plates, realizing the interlocking effect among the three, reducing the installation difficulty, simplifying the installation steps, and being able to maximize the non-blocking of the surface of the fuel tank, improving its heat dissipation effect and reducing the speed of sludge generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the front view of the present utility model;

[0031] Figure 2 is the front sectional view of the fuel tank in the present utility model;

[0032] Figure 3 is the left sectional view of the fuel tank in the present utility model;

[0033] Figure 4 is the right sectional view of the fuel tank in the present utility model.

[0034] In the figure: 1. Support seat; 2. Installation support plate; 3. Fuel tank; 4. Connection part; 41. Limit seat; 42. Connection shaft; 43. Installation screw; 44. Limit nut; 5. Partition member; 51. Inclined partition plate; 6. Liquid baffle plate; 7. Filtering part; 71. Limit ring; 72. Multi-pole magnetic ring; 73. Filter cover; 74. Magnetic force speed regulator; 8. Liquid return pipe; 9. Liquid outlet pipe; 10. Drain pipe; 11. Solenoid valve; 12. Connection block; 13. Servo motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0036] As Figures 1 to 4As shown in the figure, a hydraulic power unit includes an oil tank 3, a return liquid pipe 8 and a liquid outlet pipe 9 that are relatively fixed on one side of the oil tank 3. A connecting block 12 is provided on one side of the oil tank 3, and a servo motor 13 is installed on the connecting block 12. The hydraulic power unit further includes:

[0037] Two liquid baffle plates 6 that are relatively arranged at the liquid outlet of the return liquid pipe 8. The liquid outlet on the return liquid pipe 8 is located between the two liquid baffle plates 6. The liquid outlet end of the return liquid pipe 8 is L-shaped, and the liquid outlet of the return liquid pipe 8 faces the inner wall of the adjacent oil tank 3.

[0038] A partition member 5 that is vertically relatively arranged in the oil tank 3 for buffering the liquid flow rate. The partition member 5 includes a plurality of inclined partition plates 51 that are vertically arranged side by side and fixed in the oil tank 3.

[0039] A filtering part 7 for filtering and purifying the liquid entering the liquid outlet pipe 9.

[0040] The filtering part 7 includes:

[0041] A limiting ring 71 that surrounds the liquid inlet of the liquid outlet pipe 9. The liquid inlet on the liquid outlet pipe 9 is located on the inner wall of the oil tank 3.

[0042] A multi-stage magnetic ring 72 that is rotatably sleeved outside the limiting ring 71.

[0043] A filtering cover 73 that is fixed on the multi-stage magnetic ring 72 for filtering sludge.

[0044] A magnetic speed regulator 74 that is fixedly sleeved outside the liquid outlet pipe 9 for magnetically driving the multi-stage magnetic ring 72 to rotate.

[0045] The inclined partition plates 51 are located between the return liquid pipe 8 and the liquid outlet pipe 9, and the inclined partition plates 51 are equidistantly distributed in the oil tank 3.

[0046] The high-speed liquid flowing out of the return liquid pipe 8 first collides with the inner wall of the oil tank 3 opposite to the inclined partition plates 51. The scattered liquid generated by the collision collides with the liquid baffle plates 6 again to achieve a preliminary reduction in the liquid flow rate. After the liquid flows out between the two liquid baffle plates 6, its flow rate will be reduced again due to the blocking of the inclined partition plates 51, so that the hydraulic oil slowly flows on both sides of the inclined partition plates 51, facilitating the sludge generated in the hydraulic oil to settle to the bottom of the oil tank 3 under the action of gravity, reducing the contact probability between the sludge and the filtering cover 73 when the liquid outlet pipe 9 extracts the hydraulic oil, and reducing the probability of its blocking the filtering cover 73. And before the liquid outlet pipe 9 extracts the hydraulic oil in the oil tank 3, the magnetic speed regulator 74 is started first. When it operates, it will generate a rotating magnetic field. Through the principle of like poles attracting and unlike poles repelling, it realizes driving the multi-pole magnetic ring to rotate and driving the filtering cover 73 to rotate synchronously, so that most of the sludge attached to its surface is cleaned off due to the action of centrifugal force, further reducing the probability of the sludge blocking the filtering cover 73 and improving the filtering effect of the filtering cover 73 during long-term use.

[0047] In this embodiment, the hydraulic power unit further includes:

[0048] Two connecting parts 4 oppositely arranged on the fuel tank 3.

[0049] An installation support plate 2 arranged on the connecting part 4.

[0050] A support seat 1 fixed on the installation support plate 2. The two installation support plates 2 are vertically and oppositely distributed on the support seat 1, and the fuel tank 3 is located between the two installation support plates 2. The support seat 1 is in an L shape. The installation support plate 2 is located on the vertical plane of the support seat 1, and the outside of the servo motor 13 is fixed on the horizontal plane of the support seat 1.

[0051] The connecting part 4 is used to detachably install the fuel tank 3 on the support seat 1, and the two connecting parts 4 are respectively located at the top and bottom of the fuel tank 3.

[0052] When installing the fuel tank 3, it can be installed between the two installation support plates 2, greatly reducing the contact area between the fuel tank 3 and the support seat 1, making most parts of the fuel tank 3 in a suspended state, increasing its contact area with air, thereby improving its heat dissipation effect, reducing the working temperature of the hydraulic oil, slowing down the speed of the hydraulic oil generating sludge, and a radiator can also be installed on the surface of the fuel tank 3 to further improve the heat dissipation efficiency of the fuel tank.

[0053] In this embodiment, the connecting part 4 includes:

[0054] A limit seat 41 fixed on the fuel tank 3.

[0055] A connecting shaft 42 rotatably arranged in the limit seat 41.

[0056] Two installation screws 43 relatively fixed on the connecting shaft 42 for stably installing on the installation support plate 2.

[0057] A limit nut 44 threadedly sleeved on the installation screw 43 for limiting and fixing the installation screw 43.

[0058] During installation, first rotate a connecting shaft 42 on the fuel tank 3 to drive the installation screw 43 to rotate synchronously until the installation screw 43 is perpendicular to the surface of the fuel tank 3. Then align the installation screw 43 with the through hole on the installation support plate 2 and insert the installation screw 43 into the through hole. Next, perform the same operation to insert another installation screw 43 into the through hole on the other installation support plate 2. Then, first turn the limit nut 44 located below the fuel tank 3 to make it abut against the corresponding installation support plate 2 until both groups of installation screws 43 are in the corresponding through holes. Then turn the limit nut 44 above the fuel tank 3 and make it abut against the corresponding installation support plate 2. At this time, one side of the fuel tank 3 abuts against the support seat 1, achieving the mutual abutment and interlocking effect among the support seat 1, the installation support plate 2, and the fuel tank 3, and thus completing the installation operation of the fuel tank 3. The operation is simple and convenient, and the installation operation space is relatively spacious, facilitating the use of auxiliary tools such as wrenches to turn the limit nut 44 and reducing the difficulty of the fuel tank 3 installation operation.

[0059] In this embodiment, the hydraulic power unit further includes two drain pipes 10 respectively fixedly inserted on the top and bottom of the fuel tank 3. Solenoid valves 11 are installed on the drain pipes 10. The top and bottom inner walls of the fuel tank 3 are both designed as arc surfaces to facilitate the two-way installation of the fuel tank 3 and enable the baffle plate 6 and the inclined partition plate 51 to function properly. Moreover, during the regular cleaning of sludge, the sludge can be discharged by opening the drain pipe 10 at the bottom of the fuel tank 3. After the sludge is completely discharged, close the solenoid valve, and then open the drain pipe 10 at the top of the fuel tank 3 to add an appropriate amount of hydraulic oil to achieve the replenishment of the hydraulic oil in the fuel tank 3.

[0060] The above are only the preferred embodiments of the present invention, and the parts not described in the present invention can be realized by adopting or referring to the existing technologies. Of course, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the substantial scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A hydraulic power unit, comprising an oil tank (3) and a liquid return pipe (8) and a liquid outlet pipe (9) relatively fixed to one side of the oil tank (3), characterized in that: The hydraulic power unit also includes: Relative to the two liquid baffles (6) provided at the liquid outlet of the liquid return pipe (8), the liquid outlet of the liquid return pipe (8) is located between the two liquid baffles (6), the liquid outlet end of the liquid return pipe (8) is L-shaped, and the liquid outlet of the liquid return pipe (8) faces the inner wall of the oil tank (3) adjacent thereto; A partition (5) vertically arranged in the oil tank (3) for buffering the flow rate of the liquid, the partition (5) comprising a plurality of inclined partitions (51) vertically fixed in parallel in the oil tank (3); A filter unit (7) for filtering and purifying the liquid entering the liquid outlet pipe (9); The filter unit (7) comprises: a limiting ring (71) arranged around a liquid inlet on the liquid outlet pipe (9), wherein the liquid inlet on the liquid outlet pipe (9) is located on the inner wall of the oil tank (3); A multi-stage magnetic ring (72) rotatably sleeved on the outside of the limiting ring (71); A filter cover (73) fixed on the multi-stage magnetic ring (72) for filtering oil sludge; A magnetic speed regulator (74) is fixedly sleeved on the outside of the liquid outlet pipe (9) and is used for magnetically driving the multi-stage magnetic ring (72) to rotate.

2. The hydraulic power unit according to claim 1, characterized in that: The inclined partitions (51) are located between the liquid return pipe (8) and the liquid outlet pipe (9), and the inclined partitions (51) are evenly distributed in the oil tank (3).

3. The hydraulic power unit according to claim 2, characterized in that: The hydraulic power unit also includes: Two connecting parts (4) arranged opposite to each other on the oil tank (3); A mounting support plate (2) disposed on the connecting portion (4); A support base (1) is fixed on the mounting bracket (2), the two mounting brackets (2) are vertically distributed on the support base (1) relative to each other, and the oil tank (3) is located between the two mounting brackets (2).

4. The hydraulic power unit according to claim 3, characterized in that: The connecting portion (4) is used to detachably mount the oil tank (3) on the support seat (1), and the two connecting portions (4) are respectively located at the top and bottom of the oil tank (3).

5. The hydraulic power unit according to claim 4, characterized in that: The connecting portion (4) comprises: A limit seat (41) fixed on the oil tank (3); Rotating a connecting shaft (42) disposed in the limiting seat (41); Two mounting screws (43) relatively fixed to the connecting shaft (42) for stably mounting on the mounting support plate (2); A limiting nut (44) is threadedly sleeved on the mounting screw rod (43) and is used for limiting and fixing the mounting screw rod (43).

6. The hydraulic power unit according to claim 5, characterized in that: The hydraulic power unit further comprises two drain pipes (10) respectively fixedly plugged into the top and bottom of the oil tank (3), and a solenoid valve (11) is installed on the drain pipe (10). The top and bottom of the inner wall of the oil tank (3) are both designed as curved surfaces.

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