Energy saver based on return oil recycling

Abstract

The energy saver 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, the end, away from the energy accumulator, of the oil outlet pipe is communicated with an energy-saving valve set, one side of the energy-saving valve set is communicated with an oil return pipeline and an oil filtering mechanism, and the oil return pipeline is communicated with an oil return pipeline. 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 the 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] The invention relates to the technical field of hydraulic equipment, and in particular to an energy saver based on oil return reuse. Background Art

[0002] A hydraulic system is a device that uses liquid as a working medium and transmits power and controls through the pressure of the liquid. It is widely used in industrial machinery, automobile manufacturing, aerospace and other fields. In a hydraulic system, a pump converts mechanical energy into hydraulic energy, transmits and converts energy through pipes, valves and other components, and finally drives actuators (such as hydraulic cylinders and hydraulic motors) to complete predetermined actions. Among them, the accumulator is an important component in the hydraulic system, which is mainly used to store excess energy in the hydraulic system for emergency use. The working principle of the accumulator is based on the elastic deformation of compressed gas or springs to store energy. When there is a sudden increase in load in the system or a quick response is required, the accumulator can quickly release the stored energy to help the system operate stably, avoid excessive pressure fluctuations, and improve the reliability and efficiency of the system. In addition, the accumulator can absorb shock waves in the system, reduce the wear of system components, and extend the service life. In some cases, the accumulator can also be used as an emergency power source to provide necessary energy support when the main power source fails to ensure the safe operation of the system.

[0003] The current hydraulic system only has a single accumulator installed, which relies on the accumulator to provide the system with the required pressure for a certain period of time. When the accumulator pressure is released, an external power source is required to replenish the pressure in time. Although repeated charging and releasing can make the accumulator work continuously, the accumulator needs an external power source to provide a certain power output to achieve continuous work, thereby increasing the consumption of external energy, reducing the system working efficiency, and thus increasing production costs.

[0004] In summary, there is a need for a highly efficient energy saver based on oil return reuse. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an energy saver based on oil return reuse, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An energy saver based on return oil reuse, comprising an accumulator and an oil return tank, wherein one end of the accumulator is connected to a system pipeline, 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 pipe, and one side of the oil return pipe is connected to a first non-return valve;

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

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

[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 the cross-sectional area of ​​the first oil passage. One end of the first oil passage is respectively connected to the return oil pipeline and the eighth oil circuit, the third oil circuit is connected between one side of the reversing valve and the return oil pipeline, the second oil circuit is connected between the reversing side and the eleventh oil circuit, the other side of the reversing valve is connected to the interior of one end of the adjusting piston, and the ninth oil circuit is connected between one end of the second oil passage and the interior of the other end of the adjusting piston.

[0011] Further, the regulating piston includes a first boosting valve chamber, a first piston, a second piston, a second boosting valve chamber, a fifth oil circuit, a sixth oil circuit and a seventh oil circuit. The first boosting valve chamber and the second boosting valve chamber are connected, a first piston is arranged inside the first boosting valve chamber, and a first oil chamber and a second oil chamber are arranged inside the first boosting valve chamber separated by the first piston. One side of the first oil chamber is connected to the fifth oil circuit, one end of the fifth oil circuit is connected to the other side of the reversing valve, one side of the second oil chamber is connected to the tenth oil circuit, a second piston is arranged inside the second boosting valve chamber, one end of the second piston is fixedly connected to one end of the first piston, and the second piston is a stepped structure near one end of the first piston, the second boosting valve chamber is separated by the second piston to form a third oil chamber and a fourth oil chamber, the third oil chamber is connected to the inside of the second oil chamber, the fourth oil chamber is connected to the second one-way valve, one side of the second boosting valve chamber is connected to the ninth oil circuit, and the sixth oil circuit is connected between the fifth oil circuit and the seventh oil circuit.

[0012] Furthermore, the oil filtering mechanism includes a support platform, a first fixed plate, an oil connecting pipe, a flap and an inner filter assembly, the support platform is arranged on the top surface of the return oil tank, the bottom surface of the support platform is fixed with a first fixed plate, the first fixed plate is plugged into the inside of the return oil tank, 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 bottom surface of the first fixed plate is provided with an inner filter assembly, two oil connecting pipes are connected through the inside of the support platform, the top ends of the two oil connecting pipes are respectively connected to the first one-way valve and the eleventh oil circuit, the oil connecting pipes are connected through the inside of the first fixed plate, the bottom end of the oil connecting pipes is arranged in the inside of the inner filter assembly, the top surface of the support platform is rotatably connected with a flap, and the flap is attached and closed to the top surface of the return oil tank.

[0013] Furthermore, the inner filter assembly includes an oil filter box, an inclined block, an oil scraper component, a second filter cover and a second fixed plate. The oil filter box is fixed to the bottom surface of the first fixed plate, the bottom end of the oil receiving pipe is inserted into the inside of the oil filter box, the bottom surface of the oil filter box is a through structure, and an inclined block is arranged on the bottom surface of the inside of the oil filter box. Two inclined blocks are arranged in a mirror image about the vertical center line of the oil filter box, and the two inclined blocks are arranged at an interval. Two second fixed plates are fixed inside the oil filter box, and a second filter cover is inserted into the inside of the second fixed plate. The second filter cover is sleeved on the bottom end of the oil receiving pipe, and an oil scraper component is arranged on the inner wall of the oil filter box. One side of the oil scraper component slides and fits on the top inclined surface of the inclined block, the top surface of the oil scraper component fits on the bottom surface of the second fixed plate, and the bottom surface of the second filter cover is flush with the bottom surface of the second fixed plate.

[0014] Furthermore, the oil scraper component includes a pneumatic rod, a push plate, an oil scraper cylinder and an oil scraper plate. The pneumatic rod is arranged on the side wall of the oil filter box, 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, the top surface of the push plate is fixed with the oil scraper plate, the oil scraper plate is fitted on the bottom surface of the second fixed plate, the side wall of the push plate is rotatably connected to the oil scraper cylinder through a torsion spring, and the oil scraper cylinder is elastically fitted to the top inclined surface of the inclined block through the torsional force of the torsion spring.

[0015] Furthermore, the oil filtering mechanism also includes a filter press assembly, which is connected through the support platform, the first fixed plate and the interior of the oil filter box. The filter press assembly is inserted between the two inclined blocks. The interior of the filter press assembly is connected to the interior of the oil filter box, and 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 limit plate, a first guide rod, a first spring, a pressurizing component, a first filter cover and a sealing component. The second limit plate is fixed to the side wall of the top surface of the square tube, the first guide rod is inserted into the second limit 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, the oil filter port is arranged inside the oil filter box, a pressurizing component is arranged inside the square tube, the top 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 the side wall of the bottom end of the square tube is provided with a sealing component. Two groups of sealing components are arranged in a mirror image about the vertical center line of the square tube, the sealing component elastically fits the bottom surface of the inclined block, and the sealing component is used to seal the oil filter port by elastically rising relative to the square tube.

[0017] Furthermore, the boost 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 limit plate is fixed to the inner wall of the square tube, and the insert rod is slidably inserted into the inside of the first limit plate.

[0018] The present invention provides an energy saver based on oil return and reuse. Compared with the prior art, it has the following beneficial effects:

[0019] 1. Most of the system return oil is directed back to the return oil tank, while a small part of the system return oil is directed into the energy-saving valve group. After the reversing valve and regulating piston inside the energy-saving valve group cooperate, the system return oil is pressurized and then directed into the accumulator, so that the accumulator can provide power for the system when the pump source is not working, effectively realizing energy saving and consumption reduction, and improving energy saving efficiency;

[0020] 2. Two sets of economizers can be used in series to achieve multi-stage pressurization;

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

[0022] 4. By arranging the first piston and the second piston inside the first boost valve chamber and the second boost valve chamber, not only the channel connection is changed by pushing the piston movement to achieve boosting, but also the reciprocating motion of the piston realizes continuous output of the boosted system return oil, and the boosting operation is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The working principle diagram of an economizer based on oil return reuse of the present invention is shown;

[0025] Figure 2 The schematic diagram of the energy-saving valve group in series with the booster in the present invention is shown;

[0026] Figure 3 The working principle diagram of the internal structure of the energy-saving valve group of the present invention is shown;

[0027] Figure 4 A schematic diagram of the connection structure of the energy-saving valve group, the first one-way valve and the accumulator of the present invention is shown;

[0028] Figure 5 A schematic diagram of the connection structure between the oil filter mechanism and the oil return tank of the present invention is shown;

[0029] Figure 6 It shows a schematic structural diagram of the oil filter mechanism of the present invention in a state where the top surface of the oil return tank is opened;

[0030] Figure 7 A schematic diagram of the bottom structure of the oil filter mechanism of the present invention is shown;

[0031] Figure 8 The cross-sectional view of the internal structure of the oil filter mechanism of the present invention is shown;

[0032] Fig. 9 The schematic diagram of the structure of the oil scraping component of the present invention is shown;

[0033] As shown in the figure: 1. oil return pipe; 2. first non-return valve; 3. oil filter mechanism; 31. support platform; 32. first fixing plate; 33. oil receiving pipe; 34. filter assembly; 341. square tube; 3411. handle; 3412. first limit plate; 3413. oil filter port; 342. second limit plate; 343. first guide rod; 344. first spring; 345. pressurizing component; 3451. handle; 3452. plug rod ; 3453, sealing plug; 346, first filter cover; 347, sealing component; 3471, third limit plate; 3472, second guide rod; 3473, second spring; 3474, baffle; 35, flip cover; 36, inner filter assembly; 361, oil filter box; 362, inclined block; 363, oil scraping component; 3631, pneumatic rod; 3632, push plate; 3633, oil scraping cylinder; 3634, oil scraping plate; 364, first Second filter cover; 365, second fixing plate; 4, oil return tank; 41, side support plate; 5, energy-saving valve group; 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, regulating piston; 521, first booster valve chamber; 5211, first oil chamber; 5212, second oil chamber; 522, first piston; 523, second piston; 524, second boost valve chamber; 5241, third oil chamber; 5242, fourth oil chamber; 525, fifth oil circuit; 526, sixth oil circuit; 527, seventh oil circuit; 53, second one-way valve; 54, eighth oil circuit; 55, third one-way valve; 56, ninth oil circuit; 57, tenth oil circuit; 58, eleventh oil circuit; 6, oil outlet pipe; 7, accumulator; 8, system pipeline. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] In order to solve the technical problems in the background technology, an energy saver based on oil return reuse is provided as follows:

[0037] Combination Figure 1-Figure 3As shown, an energy saver based on return oil reuse provided by the present invention comprises an accumulator 7 and an oil return tank 4, one end of the accumulator 7 is connected to a system pipeline 8, 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 arranged on the top surface of the oil return tank 4, 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 group 5 includes a reversing valve 51, an adjusting piston 52, a second one-way valve 53, an eighth oil circuit 54, a third one-way valve 55, a ninth oil circuit 56, a tenth oil circuit 57 and an eleventh oil circuit 58. The reversing valve 51 and the adjusting piston 52, the second one-way valve 53 and the third one-way valve 55 are integrated inside the energy-saving valve group 5. One side of the reversing valve 51 is connected to the return oil pipeline 1, the ninth oil circuit 56 and the tenth oil circuit 57 are connected between the reversing valve 51 and the adjusting piston 52, one end of the tenth oil circuit 57 is connected to the eleventh channel, the eleventh oil circuit 58 is connected to the oil filtering mechanism 3, the eighth oil circuit 54 is connected between one side of the reversing valve 51 and the third one-way valve 55, one side of the adjusting piston 52 is connected between the second one-way valve 53 and the third one-way valve 55, and one end of the second one-way valve 53 is connected to the oil outlet pipe 6.

[0039] According to the above structure, the following effects can be achieved:

[0040] Most of the system return oil is directed back to the return oil tank 4, and a small part of the system return oil is directed into the energy-saving valve group 5. After the reversing valve 51 and the regulating piston 52 inside the energy-saving valve group 5 cooperate to increase the pressure of the system return oil and then direct it into the accumulator 7, the accumulator 7 can provide power for the system when the pump source is not working, thereby effectively achieving energy saving and consumption reduction, and improving energy saving efficiency.

[0041] In the present embodiment, the reversing valve 51 comprises a reversing valve 511, a first oil passage 512, a second oil passage 513, a first oil path 514, a second oil path 515, a third oil path 516 and a fourth oil path 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 the cross-sectional area of ​​the first oil passage 512. One end of the first oil passage 512 is respectively connected to the return oil pipeline 1 and the eighth oil path 54. The third oil path 516 is connected between one side of the reversing valve 511 and the return oil pipeline 1. The second oil path 515 is connected between the reversing side and the eleventh oil path 58. The other side of the reversing valve 511 is connected to the interior of one end of the regulating piston 52. The ninth oil path 56 is connected between one end of the second oil passage 513 and the interior of the other end of the regulating piston 52.

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

[0043] In this embodiment, the regulating piston 52 includes a first boosting valve chamber 521, a first piston 522, a second piston 523, a second boosting valve chamber 524, a fifth oil circuit 525, a sixth oil circuit 526 and a seventh oil circuit 527. The first boosting valve chamber 521 and the second boosting valve chamber 524 are connected, a first piston 522 is arranged inside the first boosting valve chamber 521, and a first oil chamber 5211 and a second oil chamber 5212 are arranged inside the first boosting valve chamber 521 separated by the first piston 522. One side of the first oil chamber 5211 is connected to the fifth oil circuit 525, one end of the fifth oil circuit 525 and the other side of the reversing valve 511 are connected to the fourth oil circuit 517, and the second oil chamber 521 2 one side is connected with the tenth oil circuit 57, a second piston 523 is arranged inside the second boost valve chamber 524, one end of the second piston 523 is fixedly connected with one end of the first piston 522, the second piston 523 is in a stepped structure near the end of the first piston 522, the second boost valve chamber 524 is divided into a third oil chamber 5241 and a fourth oil chamber 5242 by the second piston 523, the third oil chamber 5241 is connected with the inside of the second oil chamber 5212, the fourth oil chamber 5242 is connected with the second check valve 53, a seventh oil circuit 527 is connected between one side of the second boost valve chamber 524 and the ninth oil circuit 56, and a sixth oil circuit 526 is connected between the fifth oil circuit 525 and the seventh oil circuit 527;

[0044] By arranging the first piston 522 and the second piston 523 inside the first boost valve chamber 521 and the second boost valve chamber 524, not only the channel connection is changed by pushing the piston movement to achieve boosting, but also the reciprocating motion of the piston can realize continuous output of the boosted system return oil, and the boosting operation is efficient.

[0045] Embodiment 2

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

[0047] In order to achieve the above effect, the following structure is adopted;

[0048] The oil filter mechanism 3 includes a support platform 31, a first fixed plate 32, an oil receiving pipe 33, a flip cover 35 and an inner filter assembly 36. The support platform 31 is arranged on the top surface of the return oil tank 4. The first fixed plate 32 is fixed on the bottom surface of the support platform 31. The first fixed plate 32 is inserted into the return oil tank 4. A side support plate 41 is fixed to 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 bottom surface of the first fixed plate 32 is provided with an inner filter assembly 36. Two oil receiving pipes 33 are connected through the support platform 31. The top ends of the two oil receiving pipes 33 are connected to the first one-way valve 2 and the eleventh oil passage 58 respectively. The oil receiving pipes 33 are connected through the first fixed plate 32. The bottom end of the oil receiving pipes 33 is arranged in the inner filter assembly 36. The top surface of the support platform 31 is rotatably connected to the flip cover 35. The flip cover 35 is attached and closed 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 inner filter assembly 36 for filtration through the first one-way valve 2 and the oil connecting pipe 33. The system return oil that has been pressurized and replaced by the energy-saving valve group 5 is introduced into the inner filter assembly 36 for filtration through the eleventh oil circuit 58 and another oil connecting pipe 33, and then recovered into the return oil tank 4, thereby improving the purity of the system return oil, thereby ensuring the stability of the system oil and the pressurized energy storage oil.

[0050] In this embodiment, the inner filter assembly 36 includes an oil filter box 361, an inclined block 362, an oil scraper component 363, a second filter cover 364 and a second fixed plate 365. The oil filter box 361 is fixed to the bottom surface of the first fixed plate 32. The bottom end of the oil receiving pipe 33 is plugged into the inside of the oil filter box 361. The bottom surface of the oil filter box 361 is a through structure. The bottom surface of the oil filter box 361 is provided with an inclined block 362. Two inclined blocks 362 are provided in a mirror image about the vertical center line of the oil filter box 361. The two inclined blocks 362 are arranged in a mirror image. The oil filter box 361 is arranged at intervals, two second fixing plates 365 are fixed inside, a second filter cover 364 is inserted inside the second fixing plate 365, the second filter cover 364 is sleeved on the bottom end of the oil receiving pipe 33, an oil scraper component 363 is arranged on the inner wall of the oil filter box 361, one side of the oil scraper component 363 is slidably attached to the top inclined surface of the inclined block 362, the top surface of the oil scraper component 363 is attached to the bottom surface of the second fixing plate 365, and 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 box 361, the second filter cover 364 filters the system return oil, and then continues to flow to the inside of the return oil tank 4 through the inclined block 362, and the bottom surface of the second filter cover 364 is scraped and cleaned by the oil scraping component 363, and the filtered system return oil is pushed on the inclined block 362 to flow quickly, 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 plate 3634. The pneumatic rod 3631 is arranged on the side wall of the oil filter box 361. The telescopic end of the pneumatic rod 3631 penetrates the inside of the oil filter box 361. The telescopic end of the pneumatic rod 3631 is connected to the push plate 3632. The top surface of the push plate 3632 is fixed with the oil scraping plate 3634. The oil scraping plate 3634 is fitted on 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 fitted to the top inclined surface of the inclined block 362 through the torsion force of the torsion spring.

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

[0054] Embodiment 3

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

[0056] In order to achieve the above effect, the following structure is adopted;

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

[0058] By arranging 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 filtering and recovering the system return oil.

[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, 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 cap 346 is provided on the side wall of the square tube 341. The oil port 3413, the oil filter port 3413 is arranged inside the oil filter box 361, a pressurizing component 345 is arranged inside the square tube 341, the top of the pressurizing component 345 extends outward from the top of the square tube 341, the bottom of the square tube 341 is plugged with a first filter cover 346, a sealing component 347 is arranged on the side wall of the bottom end of the square tube 341, and two groups of sealing components 347 are arranged in a mirror image with respect to 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, and the sealing components 347 are elastically raised relative to the square tube 341 to seal the oil filter port 3413;

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

[0061] During the process of filtering the system return oil inside the square tube 341, the pressure-increasing component 345 is driven to increase the pressure inside the square tube 341, thereby promoting the system return oil filtering and improving the filtering effect;

[0062] When the oil filter port 3413 and the first filter cover 346 on the side wall of the square tube 341 are blocked, the square tube 341 and the boost component 345 are pressed down, and the inclined block 362 and the boost component 345 scrape and clean the two sides of the oil filter port 3413 respectively to ensure the stability of the filtration of the oil filter port 3413, and then the sealing component 347 closes the oil filter port 3413, and the boost component 345 continues to boost and conduct the first filter cover 346, and the cleaning operation is simple.

[0063] In this embodiment, the boost component 345 includes a handle 3451, an insert rod 3452 and a sealing plug 3453. The handle 3451 is fixed to the top of the insert rod 3452, and the sealing plug 3453 is connected to the bottom of the insert rod 3452. The sealing plug 3453 is inserted into the interior 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 interior 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 side wall of the bottom end 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 a baffle 3474 with an inverted L-shaped structure. 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 outer wall of the second conduit is sleeved with the second spring 3473.

[0065] By pushing the square tube 341 downward, the second spring 3473 pushes the baffle 3474 to rise relative to the square tube 341, so that the baffle 3474 closes the oil filter port 3413, thereby improving the convenience and efficiency of closing and cleaning.

[0066] The working principle and use process of the present invention:

[0067] Press first Figure 1-Figure 9 The pressure oil of the system return oil in the return oil pipeline 1 directly passes through the first non-return valve 2, and is filtered by the oil filter mechanism 3 to enter the return oil tank 4. The pressure oil of the system return oil in the return oil pipeline 1 acts on the first oil passage 512 at the left end of the reversing valve 511 through the first oil passage 514 to keep it in the left position. At the same time, the pressure oil of the return oil pipeline 1 enters the fourth oil chamber 5242 through the eighth oil passage 54 and the third non-return valve 55, pushes the second piston 523, and acts on the right end of the first piston 522 to make the first piston 522 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 reversing valve 511, and the second oil passage 515, and is then filtered and recovered to the return oil tank 4 through the oil filter mechanism 3.

[0068] When the second piston 523 pushes the first piston 522 to move 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 is larger under the same pressure, pushing the valve core of the reversing valve 511 to reversing, so that the reversing valve 511 is in the right position;

[0069] At this time, the pressure oil in the oil return 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, so that the first piston 522 moves rightward, pushing the second piston 523 to move rightward, and the pressure oil in the fourth oil chamber 5242 is output to the accumulator 7 through the second one-way valve 53 and the oil outlet pipe 6 for energy storage;

[0070] At the same time, the pressure oil is supplemented to the second oil passage 513 of the reversing valve 511 through the sixth oil passage 526, so that the reversing valve 511 is kept 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 through the third oil chamber 5241. The pressure oil acting on the second oil passage 513 at the right end of the reversing valve 511 enters the oil filter mechanism 3 through 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 for filtration and is recovered to the oil return tank 4. The reversing valve 511 is switched to the left position. This repeated movement realizes continuous high-pressure output.

[0071] The pressure oil of the system return oil derived from the first one-way valve 2 and the eleventh oil passage 58 is respectively introduced into the oil filter box 361 through the two oil receiving pipes 33, and flows to the inclined block 362 after being filtered by the second filter cover 364. The pneumatic rod 3631 is started to push the push block, and the oil scraper cylinder 3633 remains in contact with the inclined surface of the inclined block 362, so that the pressure oil flows to the oil filter port 3413 of the square tube 341. At the same time, the oil scraper plate 3634 scrapes the bottom surface of the second filter cover 364 of the theorem, and the pressure oil on the two inclined blocks 362 is further filtered through the two oil filter ports 3413 and collected into the square tube 341. After flowing to the bottom of the square tube 341, it is further filtered through the first filter cover 346. In the filtering process, the handle 3451 is pushed downward to make the sealing plug 3453 move downward to increase the pressure on the bottom of the square tube 341, so that the pressure oil is filtered into the return oil tank 4, thereby improving the efficiency of the pressure oil filtration and recovery of the system return oil.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy saver based on oil return reuse, characterized in that: It includes an accumulator and an oil return tank, one end of the accumulator is connected to a system pipeline, 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 pipe, and one side of the oil return pipe is connected to a first one-way valve; The energy-saving valve group includes a reversing valve, an adjusting piston, a second one-way valve, a third one-way valve, one side of the reversing valve is connected to the oil return pipeline, the reversing valve and the adjusting piston are connected, one side of the adjusting piston is connected to the second one-way valve and the third one-way valve, and one end of the second one-way valve is connected to the oil outlet pipe.

2. The economizer based on oil return reuse according to claim 1, characterized in that: The ninth oil circuit and the tenth oil circuit are connected between the reversing valve and the regulating piston, one end of the tenth oil circuit is connected to the eleventh channel, the eleventh oil circuit is connected to the oil filter mechanism, and the eighth oil circuit is connected between one side of the reversing valve and the third one-way valve.

3. The economizer based on oil return 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 the cross-sectional area of ​​the first oil passage. One end of the first oil passage is respectively connected to the return oil pipeline and the eighth oil circuit, the third oil circuit is connected between one side of the reversing valve and the return oil pipeline, the second oil circuit is connected between the reversing side and the eleventh oil circuit, the other side of the reversing valve is connected to the interior of one end of the adjusting piston, and the ninth oil circuit is connected between one end of the second oil passage and the interior of the other end of the adjusting piston.

4. The economizer based on oil return reuse according to claim 3 is characterized in that: The regulating piston includes a first boosting valve chamber, a first piston, a second piston, a second boosting valve chamber, a fifth oil circuit, a sixth oil circuit and a seventh oil circuit. The first boosting valve chamber and the second boosting valve chamber are connected, a first piston is arranged inside the first boosting valve chamber, and a first oil chamber and a second oil chamber are arranged inside the first boosting valve chamber separated by the first piston. One side of the first oil chamber is connected with the fifth oil circuit, one end of the fifth oil circuit is connected with the other side of the reversing valve, one side of the second oil chamber is connected with the tenth oil circuit, a second piston is arranged inside the second boosting valve chamber, one end of the second piston is fixedly connected with one end of the first piston, and the second piston is a stepped structure near one end of the first piston, the second boosting valve chamber is separated by the second piston to form a third oil chamber and a fourth oil chamber, the third oil chamber is connected with the inside of the second oil chamber, the fourth oil chamber is connected with the second one-way valve, one side of the second boosting valve chamber is connected with the seventh oil circuit, and the fifth oil circuit and the seventh oil circuit are connected.

5. The economizer based on oil return reuse according to claim 4, characterized in that: The oil filtering mechanism includes a support platform, a first fixed plate, an oil connecting pipe, a flap and an inner filter assembly, the support platform is arranged on the top surface of the return oil tank, the bottom surface of the support platform is fixed with a first fixed plate, the first fixed plate is plugged into the inside of the return oil tank, 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 bottom surface of the first fixed plate is provided with an inner filter assembly, two oil connecting pipes are connected through the inside of the support platform, the top ends of the two oil connecting pipes are respectively connected with the first one-way valve and the eleventh oil circuit, the oil connecting pipes are connected through the inside of the first fixed plate, the bottom end of the oil connecting pipes is arranged in the inside of the inner filter assembly, the top surface of the support platform is rotatably connected with a flap, and the flap is attached and closed to the top surface of the return oil tank.

6. The economizer based on oil return reuse according to claim 5, characterized in that: The inner filter assembly includes an oil filter box, an inclined block, an oil scraper component, a second filter cover and a second fixed plate. The oil filter box is fixed to the bottom surface of the first fixed plate, and the bottom end of the oil receiving pipe is inserted into the inside of the oil filter box. The bottom surface of the oil filter box is a through structure. An inclined block is arranged on the bottom surface of the inside of the oil filter box. Two inclined blocks are arranged in a mirror image about the vertical center line of the oil filter box, and the two inclined blocks are arranged at an interval. Two second fixed plates are fixed inside the oil filter box, and a second filter cover is inserted into the inside of the second fixed plate. The second filter cover is sleeved on the bottom end of the oil receiving pipe. An oil scraper component is arranged on the inner wall of the oil filter box. One side of the oil scraper component slides and fits on the top inclined surface of the inclined block. The top surface of the oil scraper component fits on the bottom surface of the second fixed plate, and the bottom surface of the second filter cover is flush with the bottom surface of the second fixed plate.

7. The economizer based on oil return 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 plate. The pneumatic rod is arranged on the side wall of the oil filter box, 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, the top surface of the push plate is fixed with the oil scraping plate, the oil scraping plate is fitted on 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, and the oil scraping cylinder is elastically fitted to the top inclined surface of the inclined block through the torsion force of the torsion spring.

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

9. The economizer based on oil return reuse according to claim 8, characterized in that: The filter press assembly includes a square tube, a second limit plate, a first guide rod, a first spring, a pressurizing component, a first filter cover and a sealing component. The second limit plate is fixed to the side wall of the top surface of the square tube, the first guide rod is inserted into the second limit 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, the oil filter port is arranged inside the oil filter box, a pressurizing component is arranged inside the square tube, the top 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 the side wall of the bottom end of the square tube is provided with a sealing component. Two groups of sealing components are arranged in a mirror image about the vertical center line of the square tube, the sealing component elastically fits the bottom surface of the inclined block, and the sealing component is used to seal the oil filter port by elastically rising relative to the square tube.

10. The economizer based on oil return reuse according to claim 9, characterized in that: The boost component includes a handle, an insertion rod and a sealing plug. The handle is fixed on the top of the insertion rod, and the sealing plug is connected to the bottom of the insertion rod. The sealing plug is inserted into the square tube. A first limiting plate is fixed on the inner wall of the square tube, and the insertion rod is slidably inserted into the first limiting plate.

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