Energy saver based on return oil recycling

Abstract

The utility model provides an economizer based on return oil reuse, which comprises an energy accumulator and an oil return tank, one end of the energy accumulator is connected with a system pipeline, one side of the energy accumulator is communicated with an oil outlet pipe, one end of the oil outlet pipe far away from the energy accumulator is communicated with an energy-saving valve group, one side of the energy-saving valve group is communicated with an oil return pipeline and an oil filtering mechanism, and the oil return pipeline is communicated with the oil filtering mechanism. The oil filtering mechanism is arranged on the top face of the oil return tank, the bottom of the oil filtering mechanism communicates with the interior of the oil return tank, and one side of the oil return pipeline communicates with a first one-way valve. Most of system return oil is guided back to the interior of the oil return tank, a small part of system return oil is guided into the energy-saving valve bank, the system return oil is pressurized through cooperation of the reversing valve and the adjusting piston in the energy-saving valve bank and then guided into the energy accumulator, and therefore the energy accumulator provides power for a system when a pump source does not work, and the energy-saving effect is achieved. Energy conservation and consumption reduction are effectively achieved, and the energy-saving efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, and specifically to an energy-saving device based on oil return reuse. Background Technology

[0002] A hydraulic system is a device that uses liquid as the working medium to transmit power and perform control through the pressure of the liquid. It is widely used in industrial machinery, automotive manufacturing, aerospace, and other fields. In a hydraulic system, the pump converts mechanical energy into hydraulic energy, which is then transferred and converted through pipes, valves, and other components to ultimately drive actuators (such as hydraulic cylinders and hydraulic motors) to complete predetermined actions. An accumulator is a crucial component of a hydraulic system, primarily used to store excess energy for emergencies. The accumulator operates based on storing energy through the compression of gas or the elastic deformation of a spring. When the system experiences a sudden increase in load or requires a rapid response, the accumulator can quickly release the stored energy, helping to stabilize the system, prevent excessive pressure fluctuations, and improve system reliability and efficiency. Furthermore, the accumulator can absorb shock waves in the system, reducing wear on system components and extending their service life. In certain situations, the accumulator can also serve as an emergency power source, providing necessary energy support when the main power source fails, ensuring the safe operation of the system.

[0003] Current hydraulic systems typically involve simply adding an accumulator. The accumulator provides the system's required pressure for a certain period. Once the accumulator pressure is depleted, an external power source is needed to replenish the pressure. This repeated pressurization and release process allows the accumulator to operate continuously, but it requires a certain amount of power output from an external power source to maintain continuous operation. This increases external energy consumption, reduces system efficiency, and ultimately raises production costs.

[0004] In summary, there is a need for a highly efficient energy-saving device based on oil recovery and reuse. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides an energy-saving device based on oil return and reuse, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An energy-saving device based on oil return reuse includes an accumulator and an oil return tank. One end of the accumulator is connected to a system pipeline, and one side of the accumulator is connected to an oil outlet pipe. One end of the oil outlet pipe away from the accumulator is connected to an energy-saving valve group. One side of the energy-saving valve group is connected to an oil return pipeline, and one side of the oil return pipeline is connected to a first one-way valve.

[0008] The energy-saving valve group includes a reversing valve, an adjusting piston, a second check valve, a third check valve, one side of the reversing valve being connected to the return oil pipeline, the reversing valve and the adjusting piston being connected, one side of the adjusting piston being connected to the second check valve and the third check valve, and one end of the second check valve being connected to the oil outlet pipe.

[0009] Furthermore, the reversing valve and the regulating piston are connected by a ninth oil passage and a tenth oil passage, one end of the tenth oil passage is connected to an eleventh channel, the eleventh oil passage is connected to the oil filter mechanism, and one side of the reversing valve is connected to the third check valve by an eighth oil passage.

[0010] Furthermore, the reversing valve includes a reversing valve, a first oil passage, a second oil passage, a first oil circuit, a second oil circuit, a third oil circuit, and a fourth oil circuit. One end of the reversing valve is connected to the first oil passage, and the other end of the reversing valve is connected to the second oil passage. The cross-sectional area of ​​the second oil passage is larger than that of the first oil passage. One end of the first oil passage is connected to the return oil passage and the eighth oil circuit. One side of the reversing valve is connected to the return oil passage through the third oil circuit, and the reversing side is connected to the eleventh oil circuit through the second oil circuit. The other side of the reversing valve is connected to the interior of one end of the adjusting piston. One end of the second oil passage is connected to the interior of the other end of the adjusting piston through the ninth oil circuit.

[0011] Furthermore, the adjusting piston includes a first booster valve chamber, a first piston, a second piston, a second booster valve chamber, a fifth oil passage, a sixth oil passage, and a seventh oil passage. The first booster valve chamber and the second booster valve chamber are connected. The first piston is disposed inside the first booster valve chamber. The first oil chamber is separated by the first piston and has a first oil chamber and a second oil chamber. The fifth oil passage is connected to one side of the first oil chamber. The fifth oil passage is connected to the other side of the reversing valve via a fourth oil passage. The second oil chamber is connected to the tenth oil passage on one side. The second piston is disposed inside the second booster valve chamber. One end of the second piston is fixedly connected to one end of the first piston. The end of the second piston near the first piston has a stepped structure. The second booster valve chamber is separated by the second piston and has a third oil chamber and a fourth oil chamber. The third oil chamber is connected to the second oil chamber. The fourth oil chamber is connected to the second check valve. The seventh oil passage is connected to the ninth oil passage on one side of the second booster valve chamber. The sixth oil passage is connected to the fifth oil passage and the seventh oil passage.

[0012] Furthermore, the oil filtration mechanism includes a support platform, a first fixed plate, an oil inlet pipe, a flip cover, and an internal filter assembly. The support platform is disposed on the top surface of the return oil tank, and the first fixed plate is fixed on the bottom surface of the support platform. The first fixed plate is inserted into the inside of the return oil tank, and a side support plate is fixed on the inner wall of the return oil tank. The bottom surface of the support platform is attached to the top surface of the side support plate. An internal filter assembly is disposed on the bottom surface of the first fixed plate. Two oil inlet pipes are connected through the inside of the support platform. The top ends of the two oil inlet pipes are respectively connected to the first check valve and the eleventh oil circuit. The oil inlet pipes are connected through the inside of the first fixed plate, and the bottom ends of the oil inlet pipes are disposed inside the internal filter assembly. A flip cover is rotatably connected to the top surface of the support platform, and the flip cover is fitted and sealed to the top surface of the return oil tank.

[0013] Furthermore, the internal filter assembly includes an oil filter tank, inclined blocks, an oil scraping component, a second filter cover, and a second fixing plate. The oil filter tank is fixed to the bottom surface of the first fixing plate, and the bottom end of the oil inlet pipe is inserted into the oil filter tank. The bottom surface of the oil filter tank has a through structure. An inclined block is provided on the bottom surface inside the oil filter tank. Two inclined blocks are mirror images of each other about the vertical center line of the oil filter tank, and the two inclined blocks are spaced apart. Two second fixing plates are fixed inside the oil filter tank. A second filter cover is inserted into the second fixing plate and is fitted onto the bottom end of the oil inlet pipe. An oil scraping component is provided on the inner wall of the oil filter tank. One side of the oil scraping component slides against the inclined surface of the top of the inclined block, and the top surface of the oil scraping component is against the bottom surface of the second fixing plate. The bottom surface of the second filter cover is flush with the bottom surface of the second fixing plate.

[0014] Furthermore, the oil scraping component includes a pneumatic rod, a push plate, an oil scraping cylinder, and an oil scraping blade. The pneumatic rod is disposed on the side wall of the oil filter box, and the telescopic end of the pneumatic rod passes through the inside of the oil filter box. The telescopic end of the pneumatic rod is connected to the push plate, and the oil scraping blade is fixed on the top surface of the push plate. The oil scraping blade is attached to the bottom surface of the second fixed plate. The side wall of the push plate is rotatably connected to the oil scraping cylinder through a torsion spring. The oil scraping cylinder is elastically attached to the top inclined surface of the inclined block through the torsion force of the torsion spring.

[0015] Furthermore, the oil filtration mechanism also includes a filter press assembly, which is connected through the support platform, the first fixed plate and the inside of the oil filter tank. The filter press assembly is inserted between two inclined blocks, and the inside of the filter press assembly is connected to the inside of the oil filter tank. The bottom end of the filter press assembly extends outward from the bottom surface of the inclined block.

[0016] Furthermore, the filter press assembly includes a square tube, a second limiting plate, a first guide rod, a first spring, a pressurizing component, a first filter cover, and a sealing component. The second limiting plate is fixed to the side wall of the top surface of the square tube. The first guide rod is inserted into the second limiting plate. The bottom end of the first guide rod is connected to the top surface of the support platform. The first spring is sleeved on the outer wall of the first guide rod. A handle is fixed to the outer wall of the square tube. An oil filter port is opened on the side wall of the square tube and is located inside the oil filter box. A pressurizing component is installed inside the square tube. The top end of the pressurizing component extends outward from the top of the square tube. The first filter cover is inserted into the bottom end of the square tube. A sealing component is installed on the side wall of the bottom end of the square tube. Two sets of sealing components are arranged mirror images of the vertical center line of the square tube. The sealing components are elastically fitted to the bottom surface of the inclined block. The sealing components are used to seal the oil filter port by elastically rising relative to the square tube.

[0017] Furthermore, the pressurizing component includes a handle, an insert rod, and a sealing plug. The handle is fixed to the top of the insert rod, and the sealing plug is connected to the bottom of the insert rod. The sealing plug is inserted into the inside of the square tube. A first limiting plate is fixed to the inner wall of the square tube, and the insert rod is slidably inserted into the inside of the first limiting plate.

[0018] This invention provides an energy-saving device based on oil return and reuse. Compared with the prior art, it has the following advantages:

[0019] 1. By guiding most of the system return oil back into the return oil tank, and guiding a small portion of the system return oil into the energy-saving valve group, and through the cooperation of the reversing valve and regulating piston inside the energy-saving valve group, the system return oil is pressurized and then guided into the accumulator, thereby enabling the accumulator to provide power to the system when the pump source is not working, effectively achieving energy saving and consumption reduction, and improving energy efficiency.

[0020] 2. Two sets of energy savers can be used in series to achieve multi-stage boosting;

[0021] 3. By setting a reversing valve with a cross-sectional area of ​​the second oil passage pipe larger than that of the first oil passage pipe, the force acting on the second oil passage pipe is greater under the same pressure, which facilitates the reversing movement of the valve core inside the reversing valve, so as to control the direction of the system oil return flow, and the operation is efficient and stable.

[0022] 4. By setting a first piston and a second piston inside the first and second booster valve chambers, boosting is achieved not only by pushing the pistons to change the channel connection, but also by the reciprocating motion of the pistons to achieve continuous output of the boosted system return oil, making the boosting operation highly efficient. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 The diagram shows the working principle of an energy-saving device based on oil return and reuse according to this utility model;

[0025] Figure 2 This diagram illustrates the working principle of the energy-saving valve assembly series booster according to this utility model;

[0026] Figure 3 The diagram shows the internal structure and working principle of the energy-saving valve assembly of this utility model;

[0027] Figure 4 A schematic diagram of the connection structure between the energy-saving valve assembly, the first check valve, and the accumulator of this utility model is shown.

[0028] Figure 5 A schematic diagram of the connection structure between the oil filtration mechanism and the oil return tank of this utility model is shown;

[0029] Figure 6 A schematic diagram of the oil filtration mechanism of this utility model with the top surface of the return oil tank open is shown;

[0030] Figure 7 A schematic diagram of the bottom structure of the oil filtration mechanism of this utility model is shown;

[0031] Figure 8 A cross-sectional view of the internal structure of the oil filtration mechanism of this utility model is shown;

[0032] Figure 9 A schematic diagram of the oil scraping component of this utility model is shown;

[0033] The diagram shows: 1. Return oil pipe; 2. First check valve; 3. Oil filtration mechanism; 31. Support platform; 32. First fixing plate; 33. Oil inlet pipe; 34. Pressure filter assembly; 341. Square tube; 3411. Handle; 3412. First limiting plate; 3413. Oil filter port; 342. Second limiting plate; 343. First guide rod; 344. First spring; 345. Pressure boosting component; 3451. Grip; 3452. Insert rod. 3453, Sealing plug; 346, First filter cover; 347, Sealing component; 3471, Third limiting plate; 3472, Second guide rod; 3473, Second spring; 3474, Baffle; 35, Flip cover; 36, Internal filter assembly; 361, Oil filter tank; 362, Inclined block; 363, Oil scraping component; 3631, Pneumatic rod; 3632, Push plate; 3633, Oil scraper cylinder; 3634, Oil scraper blade; 364, Third... 2. Filter cover; 365. Second fixing plate; 4. Oil return tank; 41. Side support plate; 5. Energy-saving valve assembly; 51. Reversing valve; 511. Reversing valve; 512. First oil passage; 513. Second oil passage; 514. First oil circuit; 515. Second oil circuit; 516. Third oil circuit; 517. Fourth oil circuit; 52. Adjusting piston; 521. First pressure boosting valve chamber; 5211. First oil chamber; 5212. Second oil chamber; 522. First piston; 523. Second piston; 524. Second booster valve chamber; 5241. Third oil chamber; 5242. Fourth oil chamber; 525. Fifth oil passage; 526. Sixth oil passage; 527. Seventh oil passage; 53. Second check valve; 54. Eighth oil passage; 55. Third check valve; 56. Ninth oil passage; 57. Tenth oil passage; 58. Eleventh oil passage; 6. Oil outlet pipe; 7. Accumulator; 8. System piping. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Example 1

[0036] To address the technical problems in the background section, the following energy-saving device based on oil return and reuse is proposed:

[0037] Combination Figures 1-3As shown, the present invention provides an energy-saving device based on oil return reuse, including an accumulator 7 and an oil return tank 4. One end of the accumulator 7 is connected to a system pipeline 8, and one side of the accumulator 7 is connected to an oil outlet pipe 6. One end of the oil outlet pipe 6 away from the accumulator 7 is connected to an energy-saving valve group 5. One side of the energy-saving valve group 5 is connected to an oil return pipeline 1 and an oil filter mechanism 3. The oil filter mechanism 3 is set on the top surface of the oil return tank 4, and the bottom of the oil filter mechanism 3 is connected to the inside of the oil return tank 4. One side of the oil return pipeline 1 is connected to a first one-way valve 2, and one end of the first one-way valve 2 is connected to the inside of the oil filter mechanism 3.

[0038] The energy-saving valve assembly 5 includes a reversing valve 51, an adjusting piston 52, a second check valve 53, an eighth oil passage 54, a third check valve 55, a ninth oil passage 56, a tenth oil passage 57, and an eleventh oil passage 58. The reversing valve 51, the adjusting piston 52, the second check valve 53, and the third check valve 55 are integrated inside the energy-saving valve assembly 5. One side of the reversing valve 51 is connected to the return oil pipe 1. The ninth oil passage 56 and the tenth oil passage 57 are connected between the reversing valve 51 and the adjusting piston 52. One end of the tenth oil passage 57 is connected to the eleventh channel. The eleventh oil passage 58 is connected to the oil filter mechanism 3. One side of the reversing valve 51 is connected to the third check valve 55, and the eighth oil passage 54 is connected between the reversing valve 51 and the third check valve 55. One side of the adjusting piston 52 is connected to the second check valve 53 and the third check valve 55. One end of the second check valve 53 is connected to the oil outlet pipe 6.

[0039] The following effects can be achieved based on the above structure:

[0040] By guiding most of the system return oil back into the return oil tank 4, and introducing a small portion of the system return oil into the energy-saving valve group 5, and through the cooperation of the reversing valve 51 and the regulating piston 52 inside the energy-saving valve group 5, the system return oil is pressurized and then introduced into the accumulator 7. This enables the accumulator 7 to provide power to the system when the pump source is not working, effectively achieving energy saving and consumption reduction, and improving energy efficiency.

[0041] In this embodiment, the reversing valve 51 includes a reversing valve 511, a first oil passage 512, a second oil passage 513, a first oil passage 514, a second oil passage 515, a third oil passage 516, and a fourth oil passage 517. One end of the reversing valve 511 is connected to the first oil passage 512, and the other end of the reversing valve 511 is connected to the second oil passage 513. The cross-sectional area of ​​the second oil passage 513 is larger than that of the first oil passage 512. One end of the first oil passage 512 is connected to the return oil passage 1 and the eighth oil passage 54, respectively. One side of the reversing valve 511 is connected to the return oil passage 1 via the third oil passage 516, and the reversing side is connected to the eleventh oil passage 58 via the second oil passage 515. The other side of the reversing valve 511 is connected to the interior of one end of the adjusting piston 52. One end of the second oil passage 513 is connected to the interior of the other end of the adjusting piston 52 via the ninth oil passage 56.

[0042] By setting a reversing valve 511 with a cross-sectional area of ​​the second oil passage 513 larger than that of the first oil passage 512, the force acting on the second oil passage 513 can be greater under the same pressure, thereby facilitating the reversing movement of the valve core inside the reversing valve 511 to control the direction of the system oil return flow, resulting in efficient and stable operation.

[0043] In this embodiment, the adjusting piston 52 includes a first booster valve chamber 521, a first piston 522, a second piston 523, a second booster valve chamber 524, a fifth oil passage 525, a sixth oil passage 526, and a seventh oil passage 527. The first booster valve chamber 521 and the second booster valve chamber 524 are connected. The first piston 522 is disposed inside the first booster valve chamber 521. The first oil chamber 521 is divided into a first oil chamber 5211 and a second oil chamber 5212 by the first piston 522. The fifth oil passage 525 is connected to one side of the first oil chamber 5211. A fourth oil passage 517 is connected between one end of the fifth oil passage 525 and the other end of the reversing valve 511. The second oil chamber 521... 2. One side is connected to the tenth oil passage 57. The second booster valve chamber 524 is equipped with a second piston 523. One end of the second piston 523 is fixedly connected to one end of the first piston 522. The end of the second piston 523 near the first piston 522 has a stepped structure. The second booster valve chamber 524 is divided by the second piston 523 into a third oil chamber 5241 and a fourth oil chamber 5242. The third oil chamber 5241 is connected to the interior of the second oil chamber 5212. The fourth oil chamber 5242 is connected to the second check valve 53. One side of the second booster valve chamber 524 is connected to the ninth oil passage 56 through a seventh oil passage 527. The fifth oil passage 525 and the seventh oil passage 527 are connected to a sixth oil passage 526.

[0044] By setting a first piston 522 and a second piston 523 inside the first booster valve chamber 521 and the second booster valve chamber 524, boosting is achieved not only by pushing the piston to move and changing the channel connection, but also by the reciprocating motion of the piston to achieve continuous output of the boosted system return oil, making the boosting operation highly efficient.

[0045] Example 2

[0046] like Figures 1-9 As shown, based on the above embodiments, this embodiment further provides the following:

[0047] To achieve the above effect, the following structure is adopted;

[0048] The oil filtration mechanism 3 includes a support platform 31, a first fixing plate 32, an oil inlet pipe 33, a flip cover 35, and an internal filter assembly 36. The support platform 31 is disposed on the top surface of the return oil tank 4. The first fixing plate 32 is fixed on the bottom surface of the support platform 31 and inserted into the inside of the return oil tank 4. A side support plate 41 is fixed on the inner wall of the return oil tank 4. The bottom surface of the support platform 31 is attached to the top surface of the side support plate 41. The internal filter assembly 36 is disposed on the bottom surface of the first fixing plate 32. Two oil inlet pipes 33 are connected through the inside of the support platform 31. The top ends of the two oil inlet pipes 33 are respectively connected to the first one-way valve 2 and the eleventh oil passage 58. The oil inlet pipes 33 are connected through the inside of the first fixing plate 32. The bottom end of the oil inlet pipes 33 is disposed inside the internal filter assembly 36. The flip cover 35 is rotatably connected to the top surface of the support platform 31 and is fitted and sealed to the top surface of the return oil tank 4.

[0049] Most of the system return oil inside the return oil pipeline 1 is directly introduced into the internal filter assembly 36 for filtration through the first one-way valve 2 and the oil inlet pipe 33. The system return oil that has been pressurized and replaced by the energy-saving valve group 5 is introduced into the internal filter assembly 36 for filtration through the eleventh oil line 58 and another oil inlet pipe 33, and then recycled back into the return oil tank 4. This improves the purity of the system return oil and ensures the stability of the system oil and the pressurized energy storage oil.

[0050] In this embodiment, the internal filter assembly 36 includes an oil filter tank 361, an inclined block 362, an oil scraping component 363, a second filter cover 364, and a second fixing plate 365. The oil filter tank 361 is fixed to the bottom surface of the first fixing plate 32, and the bottom end of the oil inlet pipe 33 is inserted into the inside of the oil filter tank 361. The bottom surface of the oil filter tank 361 has a through structure, and an inclined block 362 is provided on the bottom surface inside the oil filter tank 361. Two inclined blocks 362 are mirror images of each other about the vertical center line of the oil filter tank 361. The oil filter tank 361 is arranged with two second fixing plates 365 fixed inside. A second filter cover 364 is inserted into the second fixing plate 365. The second filter cover 364 is sleeved on the bottom end of the oil inlet pipe 33. An oil scraping component 363 is provided on the inner wall of the oil filter tank 361. One side of the oil scraping component 363 slides against the top inclined surface of the inclined block 362. The top surface of the oil scraping component 363 is against the bottom surface of the second fixing plate 365. The bottom surface of the second filter cover 364 is flush with the bottom surface of the second fixing plate 365.

[0051] When the system return oil is introduced into the oil filter tank 361, the second filter cover 364 filters the system return oil, and then continues to flow into the return oil tank 4 through the inclined block 362. The bottom surface of the second filter cover 364 is scraped and cleaned by the oil scraper 363, and the filtered system return oil is pushed to flow quickly on the inclined block 362, thereby ensuring the stability of oil filtration and improving oil recovery efficiency.

[0052] In this embodiment, the oil scraping component 363 includes a pneumatic rod 3631, a push plate 3632, an oil scraping cylinder 3633, and an oil scraping blade 3634. The pneumatic rod 3631 is disposed on the side wall of the oil filter box 361, and the telescopic end of the pneumatic rod 3631 passes through the inside of the oil filter box 361. The telescopic end of the pneumatic rod 3631 is connected to the push plate 3632. The oil scraping blade 3634 is fixed on the top surface of the push plate 3632. The oil scraping blade 3634 is attached to the bottom surface of the second fixed plate 365. The side wall of the push plate 3632 is rotatably connected to the oil scraping cylinder 3633 through a torsion spring. The oil scraping cylinder 3633 is elastically attached to the top inclined surface of the inclined block 362 through the torsion force of the torsion spring.

[0053] When the pneumatic rod 3631 pushes the push plate 3632 so that the scraper plate 3634 scrapes the bottom surface of the second filter cover 364, the scraper cylinder 3633 connected by the torsion spring always keeps in contact with the inclined surface of the inclined block 362, thereby pushing the system return oil flow and cleaning the inclined surface of the inclined block 362 to ensure the smooth flow of system return oil on the inclined surface.

[0054] Example 3

[0055] like Figures 4-9 As shown, based on the above embodiments, this embodiment further provides the following:

[0056] To achieve the above effect, the following structure is adopted;

[0057] The oil filtration mechanism 3 also includes a filter press assembly 34, which is connected through the support platform 31, the first fixed plate 32 and the inside of the oil filter box 361. The filter press assembly 34 is inserted between two inclined blocks 362, and the inside of the filter press assembly 34 is connected to the inside of the oil filter box 361. The bottom end of the filter press assembly 34 extends outward from the bottom surface of the inclined block 362.

[0058] By setting the filter press assembly 34 between the two inclined blocks 362, the system return oil flowing on the two inclined blocks 362 can be collected into the filter press assembly 34 and further filtered by the filter press assembly 34, thereby improving the efficiency and effect of system return oil filtration and recovery.

[0059] In this embodiment, the filter press assembly 34 includes a square tube 341, a second limiting plate 342, a first guide rod 343, a first spring 344, a pressurizing component 345, a first filter cover 346, and a sealing component 347. The second limiting plate 342 is fixed to the top side wall of the square tube 341, and the first guide rod 343 is inserted into the second limiting plate 342. The bottom end of the first guide rod 343 is connected to the top surface of the support platform 31. The first spring 344 is sleeved on the outer wall of the first guide rod 343. A handle 3411 is fixed to the outer wall of the square tube, and a filter is provided on the side wall of the square tube 341. Oil port 3413 and filter port 3413 are located inside the oil filter box 361. A pressurizing component 345 is installed inside the square tube 341. The top end of the pressurizing component 345 extends outward from the top of the square tube 341. A first filter cover 346 is inserted into the bottom end of the square tube 341. A sealing component 347 is provided on the side wall of the bottom end of the square tube 341. Two sets of sealing components 347 are arranged in a mirror image about the vertical center line of the square tube 341. The sealing components 347 are elastically attached to the bottom surface of the inclined block 362. The sealing components 347 are used to seal the oil filter port 3413 by elastically rising relative to the square tube 341.

[0060] After the first filtration, the system return oil flows along the inclined block 362 to the square tube 341, enters the square tube 341 through the filter oil port 3413, and finally passes through the first filter cover 346 for filtration, thus achieving multiple filtrations and improving the filtration effect.

[0061] During the system oil return filtration process inside the square tube 341, the pressure inside the square tube 341 is increased by driving the pressurization component 345 to promote system oil return filtration and improve the filtration effect.

[0062] When the oil filter port 3413 and the first filter cover 346 on the side wall of the square tube 341 become blocked, the square tube 341 and the pressurizing component 345 are pressed down. The inclined block 362 and the pressurizing component 345 scrape and clean both sides of the oil filter port 3413 to ensure the stability of the oil filter port 3413. Then the sealing component 347 seals the oil filter port 3413, and the pressurizing component 345 continues to pressurize and open the first filter cover 346. The cleaning operation is simple.

[0063] In this embodiment, the pressurizing component 345 includes a handle 3451, an insert rod 3452, and a sealing plug 3453. The handle 3451 is fixed to the top end of the insert rod 3452, and the sealing plug 3453 is connected to the bottom end of the insert rod 3452. The sealing plug 3453 is inserted into the inside of the square tube 341. A first limiting plate 3412 is fixed to the inner wall of the square tube 341, and the insert rod 3452 is slidably inserted into the inside of the first limiting plate 3412.

[0064] In this embodiment, the sealing component 347 includes a third limiting plate 3471, a second guide rod 3472, a second spring 3473, and a baffle 3474. The third limiting plate 3471 is fixed to the bottom side wall of the square tube 341. The second guide rod 3472 is inserted into the third limiting plate 3471. The top of the second guide rod 3472 is fixed with an inverted L-shaped baffle 3474. One side of the baffle 3474 is attached to the outer wall of the square tube 341, and the top surface of the baffle 3474 is attached to the bottom surface of the inclined block 362. The second spring 3473 is sleeved on the outer wall of the second guide tube.

[0065] By pushing the square tube 341 downwards, the second spring 3473 pushes the baffle 3474 to rise relative to the square tube 341, thereby closing the oil filter port 3413 with the baffle 3474, which improves the convenience and efficiency of the sealing and cleaning process.

[0066] Working principle and usage process of this utility model:

[0067] First press Figures 1-9 The pressure oil returning from the system in the return oil pipeline 1 passes directly through the first check valve 2 and is filtered by the oil filter mechanism 3 before entering the return oil tank 4. The other pressure oil returning from the system in the return oil pipeline 1 passes through the first oil passage 514 and acts on the first oil passage 512 at the left end of the directional valve 511, keeping it in the left position. At the same time, the pressure oil in the return oil pipeline 1 enters the fourth oil chamber 5242 through the eighth oil passage 54 and the third check valve 55, pushing the second piston 523 and acting on the right end of the first piston 522, causing the first piston 522 to move to the left. The hydraulic oil in the first oil chamber 5211 returns to the eleventh oil passage 58 through the fifth oil passage 525, the fourth oil passage 517, the directional valve 511, and the second oil passage 515, and is then filtered and recovered into the return oil tank 4 by the oil filter mechanism 3.

[0068] When the second piston 523 pushes the first piston 522 to the leftmost end, the pressure oil in the fourth oil chamber 5242 acts on the second oil passage 513 at the right end of the reversing valve 511 through the seventh oil passage 527 and the ninth oil passage 56. Because the cross-sectional area of ​​the second oil passage 513 at the right end of the reversing valve 511 is larger than the cross-sectional area of ​​the first oil passage 512 at the left end, the force acting on the second oil passage 513 under the same pressure is larger, which pushes the valve core of the reversing valve 511 to switch, so that the reversing valve 511 is in the right position.

[0069] At this time, the pressure oil in the return oil pipeline 1 enters the first oil chamber 5211 at the left end of the first piston 522 through the reversing valve 511, the fourth oil passage 517, and the fifth oil passage 525, causing the first piston 522 to move to the right, pushing the second piston 523 to move to the right, and outputting the high pressure of the pressure oil in the fourth oil chamber 5242 to the accumulator 7 for energy storage through the second check valve 53 and the oil outlet pipe 6;

[0070] Simultaneously, pressurized oil is replenished to the second oil passage 513 of the reversing valve 511 via the sixth oil passage 526, keeping the reversing valve 511 in the right position. When the second piston 523 moves to the rightmost end, the seventh oil passage 527 is connected to the tenth oil passage 57 via the third oil chamber 5241. The pressurized oil acting on the second oil passage 513 at the right end of the reversing valve 511 enters the oil filter mechanism 3 for filtration via the ninth oil passage 56, the seventh oil passage 527, the third oil chamber 5241, the tenth oil passage 57, and the eleventh oil passage 58, and is then returned to the return oil tank 4. The reversing valve 511 switches to the left position, and this process is repeated to achieve continuous high-pressure output.

[0071] The pressure oil from the first one-way valve 2 and the eleventh oil circuit 58 is introduced into the oil filter tank 361 through two oil inlet pipes 33. After being filtered by the second filter cover 364, it flows onto the inclined block 362. The pneumatic rod 3631 is activated to push the push block, and the oil scraper 3633 remains in contact with the inclined surface of the inclined block 362, causing the pressure oil to flow to the filter port 3413 of the square tube 341. At the same time, the oil scraper 3634 scrapes the bottom surface of the second filter cover 364. The pressure oil on the two inclined blocks 362 is further filtered through the two filter ports 3413 and then flows into the square tube 341. After flowing to the bottom of the square tube 341, it is further filtered by the first filter cover 346. During the filtration process, the handle 3451 is pushed down to move the sealing plug 3453 downward to pressurize the bottom of the square tube 341, causing the pressure oil to be filtered into the return oil tank 4, thus improving the efficiency of pressure oil filtration and recovery of the system return oil.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An energy-saving device based on oil recycling, characterized in that: It includes an accumulator and a return oil tank. One end of the accumulator is connected to a system pipeline, and one side of the accumulator is connected to an oil outlet pipe. One end of the oil outlet pipe away from the accumulator is connected to an energy-saving valve group. One side of the energy-saving valve group is connected to a return oil pipeline, and one side of the return oil pipeline is connected to a first check valve. The energy-saving valve group includes a reversing valve, an adjusting piston, a second check valve, a third check valve, one side of the reversing valve being connected to the return oil pipeline, the reversing valve and the adjusting piston being connected, one side of the adjusting piston being connected to the second check valve and the third check valve, and one end of the second check valve being connected to the oil outlet pipe.

2. An energy-saving device based on oil return and reuse according to claim 1, characterized in that: The reversing valve and the regulating piston are connected by a ninth oil passage and a tenth oil passage. One end of the tenth oil passage is connected to an eleventh channel. The eleventh oil passage is connected to the oil filter mechanism. One side of the reversing valve is connected to the third check valve by an eighth oil passage.

3. An energy-saving device based on oil return and reuse according to claim 2, characterized in that: The reversing valve includes a reversing valve, a first oil passage, a second oil passage, a first oil circuit, a second oil circuit, a third oil circuit, and a fourth oil circuit. One end of the reversing valve is connected to the first oil passage, and the other end of the reversing valve is connected to the second oil passage. The cross-sectional area of ​​the second oil passage is larger than that of the first oil passage. One end of the first oil passage is connected to the return oil passage and the eighth oil circuit. One side of the reversing valve is connected to the return oil passage via the third oil circuit, and the reversing side is connected to the eleventh oil circuit via the second oil circuit. The other side of the reversing valve is connected to the interior of one end of the adjusting piston. One end of the second oil passage is connected to the interior of the other end of the adjusting piston via the ninth oil circuit.

4. An energy-saving device based on oil return and reuse according to claim 3, characterized in that: The regulating piston includes a first booster valve chamber, a first piston, a second piston, a second booster valve chamber, a fifth oil passage, a sixth oil passage, and a seventh oil passage. The first booster valve chamber and the second booster valve chamber are connected. The first piston is disposed inside the first booster valve chamber. The first oil chamber is divided into a first oil chamber and a second oil chamber by the first piston. The fifth oil passage is connected to one side of the first oil chamber. The fourth oil passage is connected to one end of the fifth oil passage and the other side of the reversing valve. The tenth oil passage is connected to one side of the second oil chamber. The second piston is disposed inside the second booster valve chamber. One end of the second piston is fixedly connected to one end of the first piston. The end of the second piston near the first piston has a stepped structure. The second booster valve chamber is divided into a third oil chamber and a fourth oil chamber by the second piston. The third oil chamber is connected to the interior of the second oil chamber. The fourth oil chamber is connected to the second check valve. The seventh oil passage is connected to one side of the second booster valve chamber and the ninth oil passage. The sixth oil passage is connected between the fifth oil passage and the seventh oil passage.

5. An energy-saving device based on oil return and reuse according to claim 4, characterized in that: The oil filtration mechanism includes a support platform, a first fixed plate, oil inlet pipes, a flip cover, and an internal filter assembly. The support platform is located on the top surface of the return oil tank, and the first fixed plate is fixed to the bottom surface of the support platform. The first fixed plate is inserted into the inside of the return oil tank, and a side support plate is fixed to the inner wall of the return oil tank. The bottom surface of the support platform is attached to the top surface of the side support plate. The internal filter assembly is located on the bottom surface of the first fixed plate. Two oil inlet pipes are connected through the inside of the support platform. The top ends of the two oil inlet pipes are respectively connected to the first one-way valve and the eleventh oil circuit. The oil inlet pipes are connected through the inside of the first fixed plate, and the bottom ends of the oil inlet pipes are located inside the internal filter assembly. A flip cover is rotatably connected to the top surface of the support platform, and the flip cover is fitted and sealed to the top surface of the return oil tank.

6. An energy-saving device based on oil return and reuse according to claim 5, characterized in that: The internal filter assembly includes an oil filter tank, inclined blocks, an oil scraping component, a second filter cover, and a second fixing plate. The oil filter tank is fixed to the bottom surface of the first fixing plate. The bottom end of the oil inlet pipe is inserted into the oil filter tank. The bottom surface of the oil filter tank has a through structure. An inclined block is provided on the bottom surface inside the oil filter tank. Two inclined blocks are mirror images of each other about the vertical center line of the oil filter tank and are spaced apart. Two second fixing plates are fixed inside the oil filter tank. A second filter cover is inserted into the second fixing plate and is fitted onto the bottom end of the oil inlet pipe. An oil scraping component is provided on the inner wall of the oil filter tank. One side of the oil scraping component slides against the inclined surface of the top of the inclined block. The top surface of the oil scraping component is against the bottom surface of the second fixing plate. The bottom surface of the second filter cover is flush with the bottom surface of the second fixing plate.

7. An energy-saving device based on oil return and reuse according to claim 6, characterized in that: The oil scraping component includes a pneumatic rod, a push plate, an oil scraping cylinder, and an oil scraping blade. The pneumatic rod is located on the side wall of the oil filter box, and the telescopic end of the pneumatic rod passes through the inside of the oil filter box. The telescopic end of the pneumatic rod is connected to the push plate, and the oil scraping blade is fixed on the top surface of the push plate. The oil scraping blade is attached to the bottom surface of the second fixed plate. The side wall of the push plate is rotatably connected to the oil scraping cylinder through a torsion spring. The oil scraping cylinder is elastically attached to the top inclined surface of the inclined block through the torsion force of the torsion spring.

8. An energy-saving device based on oil return and reuse according to claim 7, characterized in that: The oil filtration mechanism also includes a filter press assembly, which is connected through the support platform, the first fixed plate and the inside of the oil filter tank. The filter press assembly is inserted between two inclined blocks, and the inside of the filter press assembly is connected to the inside of the oil filter tank. The bottom end of the filter press assembly extends outward from the bottom surface of the inclined block.

9. An energy-saving device based on oil return and reuse according to claim 8, characterized in that: The filter press assembly includes a square tube, a second limiting plate, a first guide rod, a first spring, a pressurizing component, a first filter cover, and a sealing component. The second limiting plate is fixed to the top side wall of the square tube, and the first guide rod is inserted into the second limiting plate. The bottom end of the first guide rod is connected to the top surface of the support platform, and the first spring is sleeved on the outer wall of the first guide rod. A handle is fixed to the outer wall of the square tube, and an oil filter port is opened on the side wall of the square tube. The oil filter port is located inside the oil filter box. A pressurizing component is installed inside the square tube, and the top end of the pressurizing component extends outward from the top of the square tube. The first filter cover is inserted into the bottom end of the square tube, and a sealing component is installed on the side wall of the bottom end of the square tube. Two sets of sealing components are arranged mirror images of the vertical center line of the square tube. The sealing components are elastically fitted to the bottom surface of the inclined block, and the sealing components are used to seal the oil filter port by elastically rising relative to the square tube.

10. An energy-saving device based on oil return and reuse according to claim 9, characterized in that: The pressurizing component includes a handle, a rod, and a sealing plug. The handle is fixed to the top of the rod, and the sealing plug is connected to the bottom of the rod. The sealing plug is inserted into the inside of the square tube. A first limiting plate is fixed to the inner wall of the square tube, and the rod is slidably inserted into the inside of the first limiting plate.

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