Circuit breaker switch hydraulic oil filter

Abstract

The invention relates to the technical field of filters, in particular to a circuit breaker switch hydraulic oil filter which comprises an oil well pump, an oil pumping pipe mechanism, a pipeline and an oil return pump, and an oil inlet of the oil well pump is connected with the output end of the oil pumping pipe mechanism; an oil storage cavity is formed in the oil storage tank, the input end of the oil-water separation assembly is connected with an oil outlet of the oil well pump through a pipeline, the output end of the oil-water separation assembly is connected with the input end of the filtering assembly through a pipeline, and the filtering assembly is used for filtering hydraulic oil. A filter element assembly made of electret materials is arranged in the filter assembly, the output end of the filter assembly is connected with the input end of the oil feeding pipe, the output end of the oil feeding pipe extends into an oil storage cavity of the oil storage tank, and an oil pumping opening of the oil return pump is communicated with the oil storage cavity of the oil storage tank. The filtering assembly made of the electret material adsorbs tiny impurity particles smaller than the diameter of the filtering holes, and the filtering effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filters, in particular to a circuit breaker switch hydraulic oil filter. Background Art

[0002] Hydraulic oil plays a vital role in SF6 circuit breaker switches. It is mainly used in the hydraulic operating mechanism of the circuit breaker, which stores energy by pumping oil, and the energy is released when the circuit breaker is opened and closed. The quality and performance of hydraulic oil are crucial to the normal operation and maintenance of SF6 circuit breaker switches. If the hydraulic oil is contaminated or aged, it may cause problems such as inflexible mechanism movement, increased wear, leakage, etc., affecting the performance and reliability of the circuit breaker. Therefore, it is very important to regularly replace and filter the hydraulic oil to keep it clean and in good performance. The prior art discloses a variety of hydraulic oil filters for filtering the filtered oil of SF6 circuit breakers, for example, a circuit breaker hydraulic mechanism oil filter and oil replenishment device proposed in the Chinese invention patent application with publication number CN115875346A, the device comprising a frame, an electric instrument control box, a refueling mechanism, an oil filter mechanism and a special refueling joint; the upper part of the frame is equipped with an electric instrument control box, and the bottom plate at the bottom of the frame is equipped with a refueling mechanism and an oil filter mechanism; the oil outlet of the oil filter mechanism is connected to the oil inlet of the refueling mechanism; the oil outlet of the refueling mechanism is connected to the special refueling joint; the special refueling joint is connected to the circuit breaker hydraulic mechanism oil tank; the electric instrument control box is electrically connected to the driving source of the refueling mechanism, and is used to control the refueling mechanism to transport the refueling amount of the circuit breaker hydraulic mechanism oil tank; the special refueling joint comprises an oil filling hole, an air hole and a liquid level sensor at the upper end, and a threaded interface at the lower end; a polymer permeable membrane filter is provided in the air hole; the air filter mechanism is used to effectively filter and absorb bubbles and impurities in the oil, thereby extending the service life of the hydraulic oil.

[0003] The above-mentioned device adopts a degassing filter tank and a debris removal filter tank to efficiently filter and intercept bubbles and impurities, but it does not disclose the specific structure of the debris removal tank. The traditional debris removal tank generally filters the hydraulic oil through the filter holes of the filter element. Therefore, when impurities smaller than the filter hole diameter will pass through the filter element, these small particle impurities will still cause damage to the circuit breaker, so it needs to be improved. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a circuit breaker switch hydraulic oil filter which adopts a filter component made of electret material to absorb tiny impurity particles smaller than the filter hole diameter and improve the filtering effect.

[0005] The invention discloses a circuit breaker switch hydraulic oil filter, comprising an oil pump, an oil pumping pipe mechanism, a pipeline and an oil return pump, wherein the oil inlet of the oil pump is connected to the output end of the oil pumping pipe mechanism; the invention also comprises an oil-water separation component, a filter component, an oil delivery pipe and an oil storage tank, wherein an oil storage chamber is arranged inside the oil storage tank, the input end of the oil-water separation component is connected to the oil outlet of the oil pump through a pipeline, the output end of the oil-water separation component is connected to the input end of the filter component through a pipeline, the filter component is used to filter the hydraulic oil, and an electret is arranged inside the filter component The filter element assembly is made of electret material, the output end of the filter assembly is connected to the input end of the oil delivery pipe, the output end of the oil delivery pipe extends into the oil storage chamber of the oil storage tank, and the oil extraction port of the oil return pump is connected to the oil storage chamber of the oil storage tank; the electret material can still maintain the polarized state of the dielectric for a long time after the external electric field or external mechanical action is removed, and can generate a strong electric field of kilovolts / cm in the low-speed zone. Therefore, the filter element assembly made by improving the electret material according to the high insulation environment of the hydraulic oil can absorb tiny particles by static electricity, and when working , the pumping pipe mechanism is extended into the hydraulic oil tank of the circuit breaker, the pumping pump is started to pump out the hydraulic oil through the pumping pipe mechanism and extend it into the oil-water separation component through the pipeline, the oil-water separation component is operated to separate the water in the hydraulic oil, and the waterless hydraulic oil is input into the filter component through the pipeline, the filter element component in the filter component filters and intercepts the medium and large particles in the waterless hydraulic oil through its filter hole structure, and the tiny particles in the waterless hydraulic oil are adsorbed on the inner wall of the filter hole by the electric field of the electret material, the filtered purified hydraulic oil is input into the oil storage tank through the oil delivery pipe, and new hydraulic oil is added to the oil storage chamber of the oil storage tank, and the return oil pump is operated to return the hydraulic oil in the oil storage chamber of the oil storage tank to the hydraulic oil tank of the circuit breaker, completing the filtering and reflux of the hydraulic oil. Compared with the filter component made of electret material in the prior art, while maintaining the filtering effect of the traditional filter hole, it has an electrostatic adsorption function, adsorbs tiny impurity particles smaller than the diameter of the filter hole, improves the filtering effect, reduces the damage of the circuit breaker caused by tiny particle impurities, and has good practicality.

[0006] Preferably, the oil pumping pipe mechanism includes a hard pipe joint, a threaded sleeve, a plurality of connecting rings and an inner hose. The threaded sleeve is rotated to fit the outer wall of the input end of the hard pipe joint. The plurality of connecting rings are concentrically arranged along the axis in sequence. Two adjacent connecting rings are hinged by a pin shaft. The inner hose is installed on the inner walls of the plurality of connecting rings. The upper end of the inner hose is connected to the input end of the hard pipe joint. The plurality of connecting rings constitute a movable serpentine tubular structure. The plurality of connecting rings movably support the inner hose. When working, the serpentine tubular structure constituted by the plurality of connecting rings is extended into the oil pumping interface of the hydraulic oil tank of the circuit breaker, and the threaded sleeve is threadedly connected to the oil pumping interface. Since the serpentine tubular structure constituted by the plurality of connecting rings can be flexibly bent and movable and has a certain rigidity, it can adapt to hydraulic oil tanks of different shapes and depths and has good versatility.

[0007] Preferably, it also includes a mounting frame, a reel 1, a drive motor, a reel 2, two synchronous wheels, a synchronous belt, a cable 1 and a cable 2, the mounting frame is mounted on the hard pipe joint, the reel 1 is rotatably mounted on the right end of the mounting frame, the drive motor is mounted on the mounting frame, the output shaft of the drive motor is transmission-connected to the reel 1, the reel 2 is rotatably mounted on the left end of the mounting frame, the ends of the reel 1 and the reel 2 are concentrically mounted with synchronous wheels, the synchronous belt is sleeved on the two synchronous wheels, the upper end of the cable 1 is wound on the reel 1, the lower part of the cable 1 is connected to the right part of a plurality of connecting rings, the upper end of the cable 2 is wound on the reel 2, and the lower part of the cable 2 is connected to the left part of a plurality of connecting rings; the upper ends of the cable 1 and the cable 2 are both located on the inner side of the reel 1 and the reel 2, or the upper ends of the cable 1 and the cable 2 are respectively located on the outer side of the reel 1 and the reel 2. On the other hand, when the serpentine tubular structure composed of multiple connecting rings extends into the hydraulic oil tank, the driving motor drives the reel one to rotate reciprocatingly, and the reel one drives the reel two to rotate reciprocatingly synchronously through the synchronous wheel and the synchronous belt, so that when the reel one reels in the cable one, the cable two synchronously releases the cable two. At this time, the cable one lifts the right part of the multiple connecting rings upward, so that the serpentine tubular structure composed of the multiple connecting rings curls to the upper right. Conversely, when the reel two reels in the cable two, the reel one releases the cable one synchronously. At this time, the cable two lifts the left part of the multiple connecting rings upward, so that the serpentine tubular structure composed of the multiple connecting rings curls to the upper left, so that the serpentine tubular structure composed of the multiple connecting rings stirs the hydraulic oil in the hydraulic oil tank, stirs up the impurities settled at the bottom and extracts them for filtration, thereby improving the filtration effect.

[0008] Preferably, it also includes a rotating capillary and a spiral blade. The rotating capillary is rotatably installed at the lower end of the connecting ring located at the bottom. The side wall of the rotating capillary is provided with an opening. The spiral blade is installed inside the rotating capillary, and the spiral blade is located above the opening of the rotating capillary. In the process of the hydraulic oil being pumped into the inner hose through the rotating capillary, the hydraulic oil impacts the spiral blade, thereby driving the spiral blade and the rotating capillary to rotate, so that the opening of the rotating capillary is facing all around, so that the stirred impurities enter the rotating capillary evenly and are pumped out, thereby improving the oil pumping efficiency.

[0009] Preferably, the oil-water separation component includes a separation box, a vacuum tube, a heating plate and a partition. A separation chamber is arranged inside the separation box. An input pipe and a discharge pipe communicating with the separation chamber are arranged at both ends of the separation box, respectively. The input pipe and the discharge pipe are connected to the pipeline respectively. The discharge pipe is located below the input pipe. The vacuum tube is installed on the separation box. The vacuum tube is communicated with the upper part of the separation chamber of the separation box. The heating plate is installed in the separation chamber of the separation box. The heating plate is arc-shaped. The heating plate is located below the input pipe. The partition is vertically installed in the separation chamber of the separation box. The partition is located between the heating plate and the discharge pipe. A gap is set between the lower end of the partition and the bottom of the separation chamber of the separation box; the vacuum tube is connected to an external vacuum system, so that the separation chamber of the separation box is in a negative pressure state, and the oil pump inputs the hydraulic oil into the separation chamber of the separation box through the pipeline and the input pipe, and the arc-shaped heating plate guides and disperses the hydraulic oil backward. The heating plate heats the hydraulic oil, so that the moisture in the hydraulic oil evaporates quickly at a lower temperature, and the water vapor is extracted through the vacuum tube to realize the separation of the moisture in the hydraulic oil, and the water-free hydraulic oil is transported backward through the lower gap of the partition through the discharge pipe and the pipeline, which has good practicality.

[0010] Preferably, it also includes an adsorption box, a plurality of strong magnets, notches and a low-speed zone, an adsorption chamber is arranged inside the adsorption box, an input pipe and an output pipe connected to the adsorption chamber are arranged in the adsorption box, the height of the output pipe is lower than the height of the input pipe, the input pipe is connected to the oil-water separation component through a pipeline, the output pipe is connected to the filter component through a pipeline, a plurality of strong magnets are sequentially installed in the adsorption chamber of the adsorption box, the cross-section of the strong magnet is triangular, the height of the output pipe is lower than the height of the strong magnet, an upward inclined guide surface is arranged on the side of the strong magnet facing the input pipe, a plurality of notches are arranged on the inclined guide surface, and a low-speed zone is arranged at the connection between the two strong magnets; when hydraulic oil is input into the adsorption chamber of the adsorption box, the hydraulic oil is discharged through the output pipe after submerging the plurality of strong magnets, and the hydraulic oil is discharged through the output pipe. When the oil flows through multiple strong magnets, their magnetism absorbs magnetic impurities in the hydraulic oil. Compared with the horizontal guide surface, the inclined guide surfaces of the multiple strong magnets and the multiple slots on the inclined guide surfaces extend the flow path of the hydraulic oil and can cause the magnetic impurities to gather in the multiple slots. Since the connection parts of the two adjacent strong magnets form a triangular area, the effective cross-section of the adsorption box in this area for the hydraulic oil to pass through is increased, so that the flow rate of the hydraulic oil is reduced when the flow rate remains unchanged, so that this area forms a low-speed zone. The flow rate of the hydraulic oil in the low-speed zone between the two strong magnets is much lower than the flow rate on the inclined guide surface. Therefore, non-magnetic impurities will fall into multiple low-speed zones and gather, thereby realizing the separation and adsorption of impurities in the hydraulic oil and improving the filtering effect.

[0011] Preferably, the oil pump includes a pump casing, a centrifugal impeller, a driving shaft and a second driving motor. An inlet is arranged in the middle of the pump casing, the inlet is connected to the oil pumping pipe mechanism through a pipeline, an outlet is arranged on the side wall of the pump casing, the outlet is connected to the oil-water separation component through a pipeline, the centrifugal impeller is rotatably installed inside the pump casing, the centrifugal impeller is aligned with the outlet, a suction port aligned with the inlet is arranged in the middle of the centrifugal impeller, a driving shaft is concentrically installed on the end face of the centrifugal impeller facing away from the inlet, the driving shaft is connected to the output shaft of the second driving motor through a transmission assembly, and the second driving motor is installed on the motor seat; the output shaft of the second driving motor drives the driving shaft and the centrifugal impeller to rotate, the centrifugal impeller centrifugally accelerates the hydraulic oil inside the pump casing and discharges it through the outlet, so that negative pressure is generated inside the pump casing, so that the hydraulic oil is sucked in through the inlet of the pump casing, so that efficient transportation of the hydraulic oil is realized, the technology is mature and the practicability is good.

[0012] Preferably, the transmission assembly includes gear one, a two-stage gear and gear two, and also includes an inner shaft and a propeller impeller. The driving shaft is tubular, the gear is concentrically mounted on the output shaft of the driving motor two, the two-stage gear is rotatably mounted on the motor seat of the driving motor two, the first-stage gear of the two-stage gear is meshed with gear one, the gear two is concentrically mounted on the outer wall of the driving shaft, the gear two is meshed with the second-stage gear of the two-stage gear, the inner shaft is rotatably mounted inside the driving shaft, the outer end of the inner shaft is concentrically connected with the gear, the inner end of the inner shaft is mounted with a propeller impeller, and the propeller impeller is located between the inlet of the pump casing and the suction of the centrifugal impeller The output shaft of the driving motor drives the gear one to rotate, and the gear one directly drives the propeller impeller to rotate through the inner shaft. The propeller impeller pushes the hydraulic oil at the inlet of the pump casing axially toward the suction port of the centrifugal impeller, thereby increasing the liquid inlet speed and flow rate of the centrifugal impeller. At the same time, the gear one meshes and drives the two-stage gear to rotate, and the two-stage gear meshes with the gear two to drive the drive shaft and the centrifugal impeller to rotate. The speed difference between the centrifugal impeller and the propeller impeller is adjusted by adjusting the gear ratio of the first-stage gear and the second-stage gear of the two-stage gear, thereby realizing the secondary acceleration of the axial flow and centrifugal flow of the hydraulic oil and improving the oil pumping efficiency.

[0013] Preferably, the filter assembly includes a filter box, a tubular filter element, an oil outlet piston assembly, an inner sliding tube, a damper, an oil drain pipe 1, an oil drain pipe 2, an oil storage pipe, a pressurizing piston, a piston pressure rod and a compression spring. A filter chamber is arranged inside the filter box, and the filter box is provided with an oil inlet pipe and an oil outlet pipe connected with the filter chamber. The oil inlet pipe is located in the middle of the left end of the filter box, and the oil outlet pipe is located in the middle of the side wall of the filter box. The filter box is connected to the oil storage tank through an oil delivery pipe, and the tubular filter element is installed in the filter chamber of the filter box. The left and right ends of the tubular filter element are respectively connected to the left and right inner walls of the filter box, and a filter is arranged between the tubular filter element and the inner wall of the filter box. The oil inlet pipe is located in the center of the tubular filter element. The tubular filter element is made of electret material. A large number of filter holes are arranged on the side wall of the tubular filter element. The oil outlet piston assembly is slidably installed in the filter box. Piston plates are arranged at both ends of the oil outlet piston assembly. The two piston plates are in friction contact with the inner wall of the tubular filter element. The inner sliding tube is slidably installed in the oil inlet pipe of the filter box. The inner sliding tube is connected with a piston plate of the oil outlet piston assembly. The damper is installed at the right end of the filter chamber of the filter box. The piston rod of the damper is connected with the oil outlet piston assembly. The oil discharge pipe is installed at the left end of the filter box. The oil discharge pipe extends into the interior of the tubular filter element. The oil discharge pipe The second one is installed at the right end of the filter box, the oil discharge pipe second extends into the interior of the tubular filter element, an oil storage pipe is installed on the outer wall of the filter box, the oil storage pipe is connected with the filter chamber of the filter box, the pressurizing piston is slidably installed in the oil storage pipe, the lower end of the piston pressure rod is connected with the pressurizing piston, one end of the compression spring is connected with the piston pressure rod, and the other end of the compression spring is connected with the oil storage pipe; the hydraulic oil is input into the oil outlet piston assembly through the oil inlet pipe and the inner sliding pipe, the tubular filter element and the oil outlet piston assembly are aligned and contacted to filter the hydraulic oil, the filter holes of the tubular filter element intercept and filter the medium and large particles of the hydraulic oil, and the electrostatic field of the tubular filter element will be smaller than the filter The tiny impurities in the pores are adsorbed to achieve efficient filtration. When the filter pores of the tubular filter element that are aligned and in contact with the oil outlet piston assembly are blocked, the filtration efficiency decreases, and the pressure in the oil outlet piston assembly, the inner sliding tube and the oil inlet pipe increases. The push of the hydraulic oil on the inner sliding tube and the oil outlet piston assembly is greater than the damping force of the damper on the oil outlet piston assembly, thereby pushing the oil outlet piston assembly toward the damper for a distance, so that the oil outlet piston assembly is aligned with the part of the tubular filter element whose filter pores are not blocked. At this time, the filtration efficiency is restored, and the thrust of the hydraulic oil on the oil outlet piston assembly and the inner sliding tube cannot cause the damper to shrink, thereby achieving a stable filtration effect.When the oil outlet piston assembly moves to the end of the tubular filter element and the filtering effect of the tubular filter element cannot be maintained, the valve of the oil delivery pipe is closed, and the hydraulic oil is continuously input into the oil outlet piston assembly through the inner sliding pipe, and enters the tubular filter element and the filter box through the filter hole of the tubular filter element, so that the oil pressure in the filter box is increased as a whole, and the hydraulic oil pressure between the tubular filter element and the filter box is increased synchronously. As the hydraulic oil injection amount and pressure between the tubular filter element and the filter box increase, the hydraulic oil is pressed into the oil storage pipe. As the oil level of the hydraulic oil in the oil storage pipe increases, the pressurizing piston and the piston pressure rod are pushed up, so that the compression spring is compressed and stored. After the compression and storage of the compression spring are completed, the valve of the inner sliding pipe is closed. At this time, the elastic force of the compression spring acts on the hydraulic oil in the filter box through the piston pressure rod and the pressurizing piston, so that a large pressure difference is maintained inside and outside the filter box, and the oil discharge pipe 1 and the oil discharge pipe 2 are intermittently opened and closed. When the oil discharge pipe 1 and the oil discharge pipe 2 are opened, due to the large pressure difference between the inside and outside of the filter box, the tubular The hydraulic oil inside the filter element is first output through the oil drain pipe 1 and the oil drain pipe 2. At this time, the internal pressure of the tubular filter element is less than the external pressure of the tubular filter element, so that the hydraulic oil between the outside of the tubular filter element and the filter box enters the inside of the tubular filter element through the filter hole, and the hydraulic oil inside the tubular filter element is discharged through the oil drain pipe 1 and the oil drain pipe 2. In this process, the hydraulic oil between the tubular filter element and the filter box recoils the tubular filter element, and the recoiled hydraulic oil carries the impurities on the filter hole of the tubular filter element and is discharged through the oil drain pipe 1 or the oil drain pipe 2. During the entire recoil process, the stored force of the compression spring is released, and the hydraulic oil stored in the oil storage pipe is pressed into and out of the filter box, which can increase the recoil oil volume and recoil effect. When the oil drain pipe 1 is opened for recoil, the pressure on the left side of the oil outlet piston assembly drops, so that the oil outlet piston assembly is pushed to the left by the hydraulic oil on the right side, so that the oil drain pipe 1 is opened for recoil in the final stage of recoil, which can reset the oil outlet piston assembly to the left, realizing the self-cleaning function of the tubular filter element, and having good practicality. ;

[0014] Preferably, it also includes a temperature sensor, a pressure sensor 1, a pressure sensor 2 and a pressure sensor 3, the temperature sensor is installed on the pipeline, the temperature sensor is used to detect the temperature of the hydraulic oil, the pressure sensor 1 is installed between the oil-water separation component and the adsorption box, the pressure sensor 1 is used to detect the pressure of the hydraulic oil entering the adsorption box, the pressure sensor 2 is installed between the adsorption box and the filter component, the pressure sensor 2 is used to detect the pressure of the hydraulic oil entering the filter component, the pressure sensor 3 is installed on the oil delivery pipe, and the pressure sensor 3 is used to detect the pressure of the hydraulic oil output from the filter component; the intelligent control system receives the data detected by the temperature sensor, the pressure sensor 1, the pressure sensor 2 and the pressure sensor 3, so as to determine the operating state of the entire system, adjust the power of the heating plate according to the temperature data detected by the temperature sensor, so that the hydraulic oil can maintain a certain temperature while separating the water, improve the fluidity, and avoid damage to the electret material of the tubular filter element due to excessive temperature, and detect the hydraulic oil pressure data through the pressure sensor 1, the pressure sensor 2 and the pressure sensor 3, automatically adjust the operating state of the oil pump, open or close the oil discharge pipe 1 and the oil discharge pipe 2 for backwashing operation, etc., so as to maintain the normal operation of the entire system and improve the reliability and intelligence.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the filter component made of electret material has an electrostatic adsorption function while maintaining the filtering effect of traditional filter holes, which can adsorb tiny impurity particles smaller than the diameter of the filter holes, improve the filtering effect, reduce the damage of tiny particle impurities to the circuit breaker, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is an axonometric schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the oil pumping pipe mechanism; Figure 4 It is a structural schematic diagram of the exploded state of the pumping tube mechanism; Figure 5 It is a partial cross-sectional structural schematic diagram of the filter assembly; Figure 6 It is a schematic diagram of the structure of the decomposed state of the filter component; Figure 7 It is a partial cross-sectional structural schematic diagram of the oil well pump; Figure 8 It is a schematic diagram of the structure of the oil well pump in a disassembled state; Fig. 9 It is a schematic diagram of the side cross-section structure of the oil-water separation component; Fig.10 It is a schematic diagram of the front cross-section structure of the adsorption box, strong magnet, notch and low-speed zone.

[0017] Markings in the attached drawings: 1, oil pump; 2, oil pumping pipe mechanism; 3, pipeline; 4, oil return pump; 5, oil-water separation component; 6, filter component; 7, oil delivery pipe; 8, oil storage tank; 9, hard pipe joint; 10, threaded sleeve; 11, connecting ring; 12, inner hose; 13, mounting frame; 14, reel one; 15, driving motor; 16, reel two; 17, synchronous wheel; 18, synchronous belt; 19, cable one; 20, cable two; 21, rotating capillary; 22, spiral blade; 23, separation box; 24, vacuum tube; 25, heating plate; 26, partition; 27, adsorption box; 28, strong magnet; 29. Notch; 30. Low speed zone; 31. Pump casing; 32. Centrifugal impeller; 33. Drive shaft; 34. Drive motor 2; 35. Gear 1; 36. Two-stage gear; 37. Gear 2; 38. Inner shaft; 39. Propeller impeller; 40. Filter box; 41. Tubular filter element; 42. Oil outlet piston assembly; 43. Inner sliding pipe; 44. Damper; 45. Oil drain pipe 1; 46. Oil drain pipe 2; 47. Oil storage pipe; 48. Pressurized piston; 49. Piston pressure rod; 50. Compression spring; 51. Temperature sensor; 52. Pressure sensor 1; 53. Pressure sensor 2; 54. Pressure sensor 3. DETAILED DESCRIPTION

[0018] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] Embodiment 1, as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a circuit breaker switch hydraulic oil filter includes an oil pump 1, an oil pumping pipe mechanism 2, a pipeline 3 and an oil return pump 4. The oil inlet of the oil pump 1 is connected to the output end of the oil pumping pipe mechanism 2; it also includes an oil-water separation component 5, a filter component 6, an oil delivery pipe 7 and an oil storage tank 8. The oil storage tank 8 is provided with an oil storage chamber inside. The input end of the oil-water separation component 5 is connected to the oil outlet of the oil pump 1 through the pipeline 3, and the output end of the oil-water separation component 5 is connected to the input end of the filter component 6 through the pipeline 3. The filter component 6 is used to filter the hydraulic oil. A filter element component made of electret material is arranged in the filter component 6. The output end of the filter component 6 is connected to the input end of the oil delivery pipe 7, and the output end of the oil delivery pipe 7 extends into the oil storage chamber of the oil storage tank 8. The oil suction port of the return oil pump 4 is connected to the oil storage chamber of the oil storage tank 8; it also includes a temperature sensor 51, a pressure sensor 1 52, a pressure sensor 2 53 and a pressure sensor 3 54. The temperature sensor 51 is installed on the pipeline 3, and the temperature sensor 51 is used to detect the hydraulic oil temperature. The pressure sensor 1 52 is installed between the oil-water separation component 5 and the adsorption box 27. The pressure sensor 1 52 is used to detect the pressure of the hydraulic oil entering the adsorption box 27. The pressure sensor 2 53 is installed between the adsorption box 27 and the filter component 6. The pressure sensor 2 53 is used to detect the pressure of the hydraulic oil entering the filter component 6. The pressure sensor 3 54 is installed on the oil delivery pipe 7. The pressure sensor 3 54 is used to detect the hydraulic oil pressure output from the filter component 6.

[0020] The intelligent control system receives the data detected by the temperature sensor 51, the pressure sensor 1 52, the pressure sensor 2 53 and the pressure sensor 3 54, so as to determine the operating state of the whole system, and adjusts the power of the heating plate 25 according to the temperature data detected by the temperature sensor 51, so that the hydraulic oil can maintain a certain temperature while separating the water, improve the fluidity, and avoid the damage of the electret material of the tubular filter element 41 caused by excessive temperature, and detects the hydraulic oil pressure data through the pressure sensor 1 52, the pressure sensor 2 53 and the pressure sensor 3 54, and automatically adjusts the operating state of the oil pump 1, opens or closes the oil drain pipe 1 45 and the oil drain pipe 2 46 for recoil operation, etc., so as to maintain the normal operation of the whole system and improve the reliability and intelligence; when working, the oil pumping pipe mechanism 2 is inserted into the hydraulic oil tank of the circuit breaker, and the oil pump 1 is started to extract the hydraulic oil through the oil pumping pipe mechanism 2 and extend it into the oil and water through the pipeline 3 In the separation component 5, the oil-water separation component 5 is operated to separate the water in the hydraulic oil, and the waterless hydraulic oil is input into the filter component 6 through the pipeline 3. The filter element component in the filter component 6 filters and intercepts the medium and large particles in the waterless hydraulic oil through its filter hole structure, and the tiny particles in the waterless hydraulic oil are adsorbed on the inner wall of the filter hole by the electric field of the electret material. The filtered purified hydraulic oil is input into the oil storage tank 8 through the oil delivery pipe 7, and new hydraulic oil is added to the oil storage chamber of the oil storage tank 8. The return oil pump 4 is operated to return the hydraulic oil in the oil storage chamber of the oil storage tank 8 to the hydraulic oil tank of the circuit breaker, completing the filtering and reflux of the hydraulic oil. Compared with the filter component made of electret material in the prior art, while maintaining the filtering effect of the traditional filter hole, it has an electrostatic adsorption function, which adsorbs tiny impurity particles smaller than the diameter of the filter hole, improves the filtering effect, and reduces the damage of the circuit breaker caused by tiny particle impurities.

[0021] The oil pump 1 includes a pump casing 31, a centrifugal impeller 32, a drive shaft 33 and a second drive motor 34. An inlet is arranged in the middle of the pump casing 31, and the inlet is connected to the oil pumping pipe mechanism 2 through a pipeline 3. An outlet is arranged on the side wall of the pump casing 31, and the outlet is connected to the oil-water separation component 5 through a pipeline 3. The centrifugal impeller 32 is rotatably installed inside the pump casing 31, and the centrifugal impeller 32 is aligned with the outlet. A suction port aligned with the inlet is arranged in the middle of the centrifugal impeller 32. The end face of the centrifugal impeller 32 facing away from the inlet is concentrically installed with the drive shaft 33. The drive shaft 33 is connected to the output shaft of the second drive motor 34 through a transmission assembly, and the second drive motor 34 is installed on the motor seat; the transmission assembly includes a gear 1 35, a two-stage gear 3 6 and gear 2 37, also including an inner shaft 38 and a propeller impeller 39, the drive shaft 33 is tubular, the gear 1 35 is concentrically mounted on the output shaft of the drive motor 2 34, the two-stage gear 36 is rotatably mounted on the motor base of the drive motor 2 34, the first-stage gear of the two-stage gear 36 is meshed with the gear 1 35, the gear 2 37 is concentrically mounted on the outer wall of the drive shaft 33, the gear 2 37 is meshed with the second-stage gear of the two-stage gear 36, the inner shaft 38 is rotatably mounted inside the drive shaft 33, the outer end of the inner shaft 38 is concentrically connected with the gear 1 35, the inner end of the inner shaft 38 is mounted with a propeller impeller 39, and the propeller impeller 39 is located between the inlet of the pump housing 31 and the suction port of the centrifugal impeller 32.

[0022] The output shaft of the driving motor 2 34 drives the gear 1 35 to rotate, and the gear 1 35 directly drives the propeller impeller 39 to rotate through the inner shaft 38. The propeller impeller 39 pushes the hydraulic oil at the inlet of the pump casing 31 axially toward the suction port of the centrifugal impeller 32, thereby increasing the liquid inlet speed and flow rate of the centrifugal impeller 32. At the same time, the gear 1 35 meshes and drives the two-stage gear 36 to rotate, and the two-stage gear 36 meshes with the gear 2 37 to drive the driving shaft 33 and the centrifugal impeller 32 to rotate. The speed difference between the centrifugal impeller 32 and the propeller impeller 39 is adjusted by adjusting the gear ratio of the first-stage gear and the second-stage gear of the two-stage gear 36, thereby realizing the secondary acceleration of the axial flow and centrifugal flow of the hydraulic oil. The driving shaft 33 and the centrifugal impeller 32 rotate, and the centrifugal impeller 32 centrifugally accelerates the hydraulic oil inside the pump casing 31 and discharges it through the outlet, thereby generating a negative pressure inside the pump casing 31, thereby causing the hydraulic oil to be sucked in through the inlet of the pump casing 31, thereby realizing efficient delivery of the hydraulic oil.

[0023] The filter assembly 6 includes a filter box 40, a tubular filter element 41, an oil outlet piston assembly 42, an inner slide tube 43, a damper 44, an oil discharge pipe 1 45, an oil discharge pipe 2 46, an oil storage pipe 47, a pressurizing piston 48, a piston pressure rod 49 and a compression spring 50. A filter chamber is arranged inside the filter box 40. The filter box 40 is provided with an oil inlet pipe and an oil outlet pipe connected to the filter chamber. The oil inlet pipe is located in the middle of the left end of the filter box 40, and the oil outlet pipe is located in the middle of the side wall of the filter box 40. The box 40 is connected to the oil storage box 8 through the oil delivery pipe 7. The tubular filter element 41 is installed in the filter chamber of the filter box 40. The left and right ends of the tubular filter element 41 are respectively connected to the inner walls of the left and right ends of the filter box 40. A gap is set between the tubular filter element 41 and the inner wall of the filter box 40. The oil inlet pipe is located in the center of the tubular filter element 41. The tubular filter element 41 is an electret material. A large number of filter holes are set on the side wall of the tubular filter element 41. The oil outlet piston assembly 42 is slidably installed in the filter box 40. , piston plates are provided at both ends of the oil outlet piston assembly 42, the two piston plates are in frictional contact with the inner wall of the tubular filter element 41, the inner sliding tube 43 is slidably installed in the oil inlet pipe of the filter box 40, the inner sliding tube 43 is connected to a piston plate of the oil outlet piston assembly 42, the damper 44 is installed at the right end of the filter chamber of the filter box 40, the piston rod of the damper 44 is connected to the oil outlet piston assembly 42, the oil discharge pipe 45 is installed at the left end of the filter box 40, and the oil discharge pipe 45 extends into the pipe The inside of the tubular filter element 41, the oil drain pipe 46 is installed at the right end of the filter box 40, the oil drain pipe 46 extends into the inside of the tubular filter element 41, the outer wall of the filter box 40 is installed with an oil storage pipe 47, the oil storage pipe 47 is connected to the filter chamber of the filter box 40, the pressurizing piston 48 is slidably installed in the oil storage pipe 47, the lower end of the piston rod 49 is connected to the pressurizing piston 48, one end of the compression spring 50 is connected to the piston rod 49, and the other end of the compression spring 50 is connected to the oil storage pipe 47.

[0024] The hydraulic oil is input into the oil outlet piston assembly 42 through the oil inlet pipe and the inner sliding pipe 43. The part where the tubular filter element 41 is aligned and in contact with the oil outlet piston assembly 42 filters the hydraulic oil. The filter holes of the tubular filter element 41 intercept and filter the medium and large particles of the hydraulic oil. The electrostatic field of the tubular filter element 41 adsorbs the tiny impurities smaller than the filter holes, thereby achieving efficient filtration. When the filter holes of the part where the tubular filter element 41 is aligned and in contact with the oil outlet piston assembly 42 are blocked and the filtration efficiency decreases, the pressure in the oil outlet piston assembly 42, the inner sliding pipe 43 and the oil inlet pipe increases, and the hydraulic oil pushes the inner sliding pipe 43 and the oil outlet piston assembly 42 greater than the damping force of the damper 44 on the oil outlet piston assembly 42, thereby pushing the oil outlet piston assembly 42 toward the damper 44 for a distance, so that the oil outlet piston assembly 42 is aligned with the part of the tubular filter element 41 where the filter holes are not blocked. At this time, the filtration efficiency is restored, and the thrust of the hydraulic oil on the oil outlet piston assembly 42 and the inner sliding pipe 43 cannot cause the damper 44 to shrink, thereby achieving a stable filtration effect.When the oil outlet piston assembly 42 moves to the end of the tubular filter element 41 and the filtering effect of the tubular filter element 41 cannot be maintained, the valve of the oil delivery pipe 7 is closed, and the hydraulic oil is continuously input into the oil outlet piston assembly 42 through the inner slide pipe 43, and enters between the tubular filter element 41 and the filter box 40 through the filter hole of the tubular filter element 41, so that the oil pressure in the filter box 40 is increased as a whole, and the hydraulic oil pressure between the tubular filter element 41 and the filter box 40 is increased synchronously. As the hydraulic oil injection amount and pressure between the tubular filter element 41 and the filter box 40 increase, the hydraulic oil is pressed into the oil storage pipe 47. In the process, as the oil level of the hydraulic oil in the oil storage pipe 47 rises, the pressurizing piston 48 and the piston pressure rod 49 are pushed up, so that the compression spring 50 is compressed and stored. After the compression and storage of the compression spring 50 are completed, the valve of the inner slide pipe 43 is closed. At this time, the elastic force of the compression spring 50 acts on the hydraulic oil in the filter box 40 through the piston pressure rod 49 and the pressurizing piston 48, so that a large pressure difference is maintained inside and outside the filter box 40, and the oil drain pipe 1 45 and the oil drain pipe 2 46 are intermittently opened and closed. When the oil drain pipe 1 45 and the oil drain pipe 2 46 are opened, due to the large pressure inside and outside the filter box 40, the oil Due to the force difference, the hydraulic oil in the tubular filter element 41 is first discharged through the oil drain pipe 1 45 and the oil drain pipe 2 46. At this time, the internal pressure of the tubular filter element 41 is less than the external pressure of the tubular filter element 41, so that the hydraulic oil between the outside of the tubular filter element 41 and the filter box 40 enters the tubular filter element 41 through the filter hole, and the hydraulic oil in the tubular filter element 41 is discharged through the oil drain pipe 1 45 and the oil drain pipe 2 46. In this process, the hydraulic oil between the tubular filter element 41 and the filter box 40 backwashes the tubular filter element 41, and the backwashed hydraulic oil carries the tubular filter element 41. Impurities on the filter holes are discharged through the oil drain pipe 1 45 or the oil drain pipe 2 46. During the entire recoil, the stored force of the compression spring 50 is released, and the hydraulic oil stored in the oil storage pipe 47 is pressed into the filter box 40, which can increase the oil volume and recoil effect of recoil. When the oil drain pipe 1 45 is opened for recoil, the pressure on the left side of the oil outlet piston assembly 42 drops, so that the oil outlet piston assembly 42 is pushed to the left by the hydraulic oil on the right side, so that the oil drain pipe 1 45 is opened for recoil in the last stage of recoil, and the oil outlet piston assembly 42 can be reset to the left, realizing the self-cleaning function of the tubular filter element 41. ;

[0025] Embodiment 2, as Figures 1 to 4As shown, on the basis of Example 1, the pumping pipe mechanism 2 includes a hard pipe joint 9, a threaded sleeve 10, a plurality of connecting rings 11 and an inner hose 12. The outer wall of the input end of the hard pipe joint 9 is rotatably mounted with the threaded sleeve 10. The plurality of connecting rings 11 are sequentially arranged concentrically along the axis. Two adjacent connecting rings 11 are hinged by a pin. The inner hose 12 is mounted on the inner walls of the plurality of connecting rings 11. The upper end of the inner hose 12 is connected to the input end of the hard pipe joint 9. It also includes a mounting frame 13, a reel 14, a drive motor 15, a reel 2 16, two synchronous wheels 17, a synchronous belt 18, a cable 19 and a cable 20. The mounting frame 13 is mounted on the hard pipe joint 9. The reel 14 is rotatably mounted on the right end of the mounting frame 13. The drive motor 15 is mounted on the mounting frame 13. The drive motor The output shaft of 15 is connected to the reel 14 for transmission, and the reel 2 16 is rotatably installed on the left end of the mounting frame 13. The ends of the reels 14 and 16 are concentrically installed with synchronous wheels 17, and the synchronous belt 18 is mounted on the two synchronous wheels 17. The upper end of the cable 19 is wound on the reel 14, and the lower part of the cable 19 is connected to the right part of multiple connecting rings 11. The upper end of the cable 20 is wound on the reel 2 16, and the lower part of the cable 20 is connected to the left part of multiple connecting rings 11; it also includes a rotating capillary 21 and a spiral blade 22. The rotating capillary 21 is rotatably installed at the lower end of the connecting ring 11 located at the bottom, and the side wall of the rotating capillary 21 is provided with an opening. The spiral blade 22 is installed inside the rotating capillary 21, and the spiral blade 22 is located above the opening of the rotating capillary 21.

[0026] A plurality of connecting rings 11 form a movable serpentine-shaped tubular structure, and the plurality of connecting rings 11 movably support the inner hose 12. When working, the serpentine-shaped tubular structure formed by the plurality of connecting rings 11 is extended into the oil extraction interface of the hydraulic oil tank of the circuit breaker, and the threaded sleeve 10 is threadedly connected to the oil extraction interface. Since the serpentine-shaped tubular structure formed by the plurality of connecting rings 11 can be flexibly bent and movable and has a certain rigidity, it can adapt to hydraulic oil tanks of different shapes and depths and has good versatility. The upper ends of the cable 19 and the cable 20 are both located on the inner side of the reel 14 and the reel 2 16, or the upper ends of the cable 19 and the cable 20 are respectively located on the outer side of the reel 14 and the reel 2 16. When the serpentine-shaped tubular structure formed by the plurality of connecting rings 11 is extended into the hydraulic oil tank, the driving motor 15 drives the reel 14 to reciprocate, and the reel 14 drives the reel 2 16 to reciprocate synchronously through the synchronous wheel 17 and the synchronous belt 18, so that the reel 14 reels in the cable 19 and the cable 20. At 19, cable 20 is released synchronously. At this time, cable 19 lifts the right part of the multiple connecting rings 11 upward, so that the serpentine tubular structure composed of the multiple connecting rings 11 curls to the upper right. On the contrary, when reel 2 16 reels in cable 20, reel 14 releases cable 19 synchronously. At this time, cable 20 lifts the left part of the multiple connecting rings 11 upward, so that the serpentine tubular structure composed of the multiple connecting rings 11 curls to the upper left, so that the serpentine tubular structure composed of the multiple connecting rings 11 stirs the hydraulic oil in the hydraulic oil tank, stirs up the impurities settled at the bottom and extracts them for filtration, thereby improving the filtration effect. In the process of the hydraulic oil being drawn into the inner hose 12 through the rotating capillary 21, the hydraulic oil impacts the spiral blade 22, thereby driving the spiral blade 22 and the rotating capillary 21 to rotate, so that the opening of the rotating capillary 21 faces all around, so that the stirred impurities are evenly entered into the rotating capillary 21 and extracted, thereby improving the oil extraction efficiency.

[0027] Embodiment 3, as Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, on the basis of Example 1, the oil-water separation component 5 includes a separation box 23, a vacuum tube 24, a heating plate 25 and a partition 26. A separation chamber is arranged inside the separation box 23. An input pipe and an exhaust pipe connected to the separation chamber are respectively arranged at both ends of the separation box 23. The input pipe and the exhaust pipe are respectively connected to the pipeline 3. The exhaust pipe is located below the input pipe. The vacuum tube 24 is installed on the separation box 23. The vacuum tube 24 is connected to the upper part of the separation chamber of the separation box 23. The heating plate 25 is installed in the separation chamber of the separation box 23. The heating plate 25 is arc-shaped. The heating plate 25 is located below the input pipe. The partition 26 is vertically installed in the separation chamber of the separation box 23. The partition 26 is located between the heating plate 25 and the exhaust pipe. A gap is set between the lower end of the partition 26 and the bottom of the separation chamber of the separation box 23.

[0028] The vacuum tube 24 is connected to an external vacuum system, so that the separation chamber of the separation box 23 is in a negative pressure state. The oil pump 1 inputs the hydraulic oil into the separation chamber of the separation box 23 through the pipeline 3 and the input pipe. The arc-shaped heating plate 25 guides and disperses the hydraulic oil backward. The heating plate 25 heats the hydraulic oil, so that the water in the hydraulic oil evaporates quickly at a lower temperature. The water vapor is extracted through the vacuum tube 24 to achieve the separation of water in the hydraulic oil. The water-free hydraulic oil is transported backward through the lower gap of the partition 26 through the discharge pipe and the pipeline 3.

[0029] It also includes an adsorption box 27, a plurality of strong magnets 28, a notch 29 and a low-speed zone 30. An adsorption chamber is arranged inside the adsorption box 27. The adsorption box 27 is provided with an input pipe and an output pipe connected to the adsorption chamber. The height of the output pipe is lower than the height of the input pipe. The input pipe is connected to the oil-water separation component 5 through the pipeline 3. The output pipe is connected to the filter component 6 through the pipeline 3. A plurality of strong magnets 28 are sequentially installed in the adsorption chamber of the adsorption box 27. The cross-section of the strong magnet 28 is triangular. The height of the output pipe is lower than the height of the strong magnet 28. An upward inclined guide surface is arranged on the side of the strong magnet 28 facing the input pipe. A plurality of notches 29 are arranged on the inclined guide surface. A low-speed zone 30 is arranged at the connection between two strong magnets 28.

[0030] When the hydraulic oil is input into the adsorption chamber of the adsorption box 27, the hydraulic oil submerges the multiple strong magnets 28 and then is discharged through the output pipe. When the hydraulic oil flows through the multiple strong magnets 28, its magnetism adsorbs the magnetic impurities in the hydraulic oil. The inclined guide surfaces of the multiple strong magnets 28 and the multiple slots 29 on the inclined guide surfaces extend the flow path of the hydraulic oil compared to the horizontal guide surface, and can cause the magnetic impurities to gather in the multiple slots 29. Since the connection between the two adjacent strong magnets 28 forms a triangular area, the effective cross-section of the adsorption box 27 for the hydraulic oil to pass through in this area is increased, so that the flow rate of the hydraulic oil is reduced when the flow rate remains unchanged, so that a low-speed area 30 is formed in this area. The flow rate of the hydraulic oil in the low-speed area 30 between the two strong magnets 28 is much lower than the flow rate on the inclined guide surface. Therefore, non-magnetic impurities will fall into the multiple low-speed areas 30 and gather, thereby realizing the separation and adsorption of impurities in the hydraulic oil and improving the filtering effect.

[0031] like Figures 1 to 10As shown, a circuit breaker switch hydraulic oil filter of the present invention, when working, firstly, the pumping pipe mechanism 2 is extended into the hydraulic oil tank of the circuit breaker, and the pumping pipe mechanism 2 is made to stir the hydraulic oil, the pumping pump 1 is started to pump out the hydraulic oil through the pumping pipe mechanism 2 and extend it into the oil-water separation component 5 through the pipeline 3, the oil-water separation component 5 is operated to separate the water in the hydraulic oil by negative pressure evaporation, the waterless hydraulic oil is input into the adsorption box 27 through the pipeline 3, and the multiple strong magnets 28 adsorb the magnetic impurities in the hydraulic oil. The large particles of impurities are deposited in multiple low-speed zones 30 to complete preliminary impurity removal and filtration. After that, the hydraulic oil that has been preliminarily filtered and impurities removed is input into the filter assembly 6. The tubular filter element 41 of the filter element assembly in the filter assembly 6 filters and intercepts the medium and large particles in the hydraulic oil through its filter hole structure. The tiny particles in the hydraulic oil are adsorbed on the inner wall of the filter hole by the electric field of the electret material. The filtered purified hydraulic oil is input into the oil storage tank 8 through the oil delivery pipe 7, and new hydraulic oil is added to the oil storage chamber of the oil storage tank 8 to return the oil. The pump 4 is running to transfer the hydraulic oil in the oil storage chamber of the oil storage tank 8 back to the hydraulic oil tank of the circuit breaker, completing the filtration and reflux of the hydraulic oil. After working for a period of time, when the pressure difference between the pressure sensor 3 54 and the pressure sensor 2 53 is too large, the tubular filter element 41 starts to be backwashed, and the valve of the oil delivery pipe 7 is closed, so that the hydraulic oil pressure between the tubular filter element 41 and the filter box 40 increases. After the hydraulic oil enters the oil storage pipe 47, it pushes up the pressurizing piston 48 and the piston rod 49, so that the compression spring 50 is compressed and stored. The oil drain pipe 1 45 and the oil drain pipe 2 46 are intermittently opened and closed to discharge the hydraulic pressure inside the tubular filter element 41 at a high speed, so that the hydraulic oil between the tubular filter element 41 and the filter box 40 can backflush the tubular filter element 41. The backwashing hydraulic oil carries the impurities on the filter holes of the tubular filter element 41 and is discharged through the oil drain pipe 1 45 or the oil drain pipe 2 46. Finally, in the final stage of backwashing, the oil drain pipe 1 45 is opened for backwashing, which can reset the oil outlet piston assembly 42 to the left, and the valve of the oil delivery pipe 7 can be opened to continue the filtering work.

[0032] The main functions achieved by the present invention are: 1. The filter component made of electret material can absorb tiny impurity particles smaller than the filter hole diameter to improve the filtering effect; 2. Able to separate and discharge water from hydraulic oil; 3. It can stir the hydraulic oil in the hydraulic oil tank of the circuit breaker, stir up the impurities settled at the bottom and then extract them for filtration; 4. Remove magnetic impurities through the magnetic attraction structure, and remove large particles of impurities by setting a low speed zone 30; 5. The filter component has the function of recoil self-cleaning.

[0033] The invention discloses a circuit breaker switch hydraulic oil filter, and its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; the invention discloses a circuit breaker switch hydraulic oil filter, and its oil pump 1, oil pumping pipe mechanism 2, pipeline 3, oil return pump 4, oil-water separation component 5, filter component 6, oil storage tank 8, hard pipe joint 9, threaded sleeve 10, inner hose 12, reel 14, drive motor 15, reel 2 16, synchronous wheel 17, synchronous belt 18, cable 1 19, cable 20, spiral blade 22, vacuum tube 24, heating plate 25, Strong magnet 28, pump casing 31, centrifugal impeller 32, drive motor 2 34, gear 1 35, two-stage gear 36, gear 2 37, inner shaft 38, propeller impeller 39, filter box 40, tubular filter element 41, inner sliding tube 43, damper 44, oil drain pipe 1 45, oil drain pipe 2 46, pressurizing piston 48, compression spring 50, temperature sensor 51, pressure sensor 1 52, pressure sensor 2 53, and pressure sensor 3 54 are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A circuit breaker switch hydraulic oil filter, comprising an oil pump (1), an oil pumping pipe mechanism (2), a pipeline (3) and an oil return pump (4), wherein the oil inlet of the oil pump (1) is connected to the output end of the oil pumping pipe mechanism (2); characterized in that: It also includes an oil-water separation component (5), a filter component (6), an oil delivery pipe (7) and an oil storage tank (8). An oil storage chamber is arranged inside the oil storage tank (8). The input end of the oil-water separation component (5) is connected to the oil outlet of the oil pump (1) through the pipeline (3). The output end of the oil-water separation component (5) is connected to the input end of the filter component (6) through the pipeline (3). The filter component (6) is used to filter hydraulic oil. A filter element component made of electret material is arranged inside the filter component (6). The output end of the filter component (6) is connected to the input end of the oil delivery pipe (7). The output end of the oil delivery pipe (7) extends into the oil storage chamber of the oil storage tank (8). The oil extraction port of the oil return pump (4) is connected to the oil storage chamber of the oil storage tank (8). The oil-water separation assembly (5) comprises a separation box (23), a vacuum tube (24), a heating plate (25) and a partition (26). A separation chamber is arranged inside the separation box (23). An input pipe and an exhaust pipe communicating with the separation chamber are arranged at both ends of the separation box (23). The input pipe and the exhaust pipe are connected to the pipeline (3) respectively. The exhaust pipe is located below the input pipe. The vacuum tube (24) is installed on the separation box (23). The vacuum tube (24) is communicated with the upper part of the separation chamber of the separation box (23). The heating plate (25) is installed in the separation chamber of the separation box (23). The heating plate (25) is arc-shaped. The heating plate (25) is located below the input pipe. The partition (26) is vertically installed in the separation chamber of the separation box (23). The partition (26) is located between the heating plate (25) and the exhaust pipe. A gap is arranged between the lower end of the partition (26) and the bottom of the separation chamber of the separation box (23).

2. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The oil pumping pipe mechanism (2) comprises a hard pipe joint (9), a threaded sleeve (10), a plurality of connecting rings (11) and an inner hose (12). The threaded sleeve (10) is rotatably mounted on the outer wall of the input end of the hard pipe joint (9). The plurality of connecting rings (11) are sequentially arranged concentrically along an axis. Two adjacent connecting rings (11) are hingedly connected via a pin. The inner hose (12) is mounted on the inner walls of the plurality of connecting rings (11). The upper end of the inner hose (12) is connected to the input end of the hard pipe joint (9).

3. A circuit breaker switch hydraulic oil filter as claimed in claim 2, characterized in that: The invention also comprises a mounting frame (13), a first reel (14), a driving motor (15), a second reel (16), two synchronous wheels (17), a synchronous belt (18), a first cable (19) and a second cable (20), wherein the mounting frame (13) is mounted on the hard pipe joint (9), the first reel (14) is rotatably mounted on the right end of the mounting frame (13), the driving motor (15) is mounted on the mounting frame (13), the output shaft of the driving motor (15) is transmission-connected to the first reel (14), and the second reel (16) is The first reel (14) and the second reel (16) are rotatably mounted on the left end of the mounting frame (13), the ends of the first reel (14) and the second reel (16) are concentrically mounted with a synchronous wheel (17), the synchronous belt (18) is sleeved on the two synchronous wheels (17), the upper end of the first cable (19) is wound on the first reel (14), the lower part of the first cable (19) is connected to the right part of the plurality of connecting rings (11), the upper end of the second cable (20) is wound on the second reel (16), and the lower part of the second cable (20) is connected to the left part of the plurality of connecting rings (11).

4. A circuit breaker switch hydraulic oil filter as claimed in claim 3, characterized in that: It also comprises a rotating capillary (21) and a spiral blade (22), wherein the rotating capillary (21) is rotatably mounted on the lower end of the connecting ring (11) located at the bottom, an opening is provided on the side wall of the rotating capillary (21), and the spiral blade (22) is installed inside the rotating capillary (21), and the spiral blade (22) is located above the opening of the rotating capillary (21).

5. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The invention also comprises an adsorption box (27), a plurality of strong magnets (28), a notch (29) and a low-speed zone (30). An adsorption chamber is arranged inside the adsorption box (27). The adsorption box (27) is provided with an input pipe and an output pipe connected to the adsorption chamber. The height of the output pipe is lower than the height of the input pipe. The input pipe is connected to the oil-water separation component (5) through a pipeline (3). The output pipe is connected to the filter component (6) through a pipeline (3). A plurality of strong magnets (28) are sequentially installed in the adsorption chamber of the adsorption box (27). The cross section of the strong magnets (28) is triangular. The height of the output pipe is lower than the height of the strong magnets (28). An upward inclined guide surface is arranged on one side of the strong magnet (28) facing the input pipe. A plurality of notches (29) are arranged on the inclined guide surface. A low-speed zone (30) is arranged at the connection between two strong magnets (28).

6. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The oil pump (1) comprises a pump casing (31), a centrifugal impeller (32), a drive shaft (33) and a second drive motor (34). An inlet is arranged in the middle of the pump casing (31), and the inlet is connected to the oil pumping pipe mechanism (2) through a pipeline (3). An outlet is arranged on the side wall of the pump casing (31), and the outlet is connected to an oil-water separation component (5) through a pipeline (3). The centrifugal impeller (32) is rotatably mounted inside the pump casing (31), the centrifugal impeller (32) is aligned with the outlet, a suction port aligned with the inlet is arranged in the middle of the centrifugal impeller (32), the drive shaft (33) is concentrically mounted on the end surface of the centrifugal impeller (32) facing away from the inlet, the drive shaft (33) is transmission-connected to the output shaft of the second drive motor (34) through a transmission component, and the second drive motor (34) is mounted on a motor seat.

7. A circuit breaker switch hydraulic oil filter as claimed in claim 6, characterized in that: The transmission assembly comprises a first gear (35), a two-stage gear (36) and a second gear (37), and also comprises an inner shaft (38) and a propeller impeller (39). The drive shaft (33) is tubular, the first gear (35) is coaxially mounted on the output shaft of the second drive motor (34), the two-stage gear (36) is rotatably mounted on the motor base of the second drive motor (34), the first stage gear of the two-stage gear (36) is meshed with the first gear (35), the second gear (37) is coaxially mounted on the outer wall of the drive shaft (33), the second gear (37) is meshed with the second stage gear of the two-stage gear (36), the inner shaft (38) is rotatably mounted inside the drive shaft (33), the outer end of the inner shaft (38) is coaxially connected to the first gear (35), the inner end of the inner shaft (38) is mounted with the propeller impeller (39), and the propeller impeller (39) is located between the inlet of the pump housing (31) and the suction port of the centrifugal impeller (32).

8. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The filter assembly (6) comprises a filter box (40), a tubular filter element (41), an oil outlet piston assembly (42), an inner sliding tube (43), a damper (44), an oil outlet pipe (45), an oil outlet pipe (46), an oil storage pipe (47), a pressurizing piston (48), a piston pressure rod (49) and a compression spring (50). A filter chamber is arranged inside the filter box (40). The filter box (40) is provided with an oil inlet pipe and an oil outlet pipe which are connected to the filter chamber. The oil inlet pipe is located at the middle of the left end of the filter box (40), and the oil outlet pipe is located at the middle of the side wall of the filter box (40). The filter box (40) is connected to the oil storage box (8) through an oil delivery pipe (7). The tubular filter element (41) is installed in the filter chamber of the filter box (40). The left and right ends of the tubular filter element (41) are respectively connected to the left and right inner walls of the filter box (40). A gap is provided between the tubular filter element (41) and the inner wall of the filter box (40). The oil inlet pipe is located at the center of the tubular filter element (41). The tubular filter element (41) is made of electret material. A large number of filter holes are provided on the side wall of the tubular filter element (41). The oil outlet piston assembly (42) is slidably installed in the filter box (40). , piston plates are provided at both ends of the oil outlet piston assembly (42), the two piston plates are in frictional contact with the inner wall of the tubular filter element (41), the inner sliding tube (43) is slidably installed in the oil inlet pipe of the filter box (40), the inner sliding tube (43) is connected to a piston plate of the oil outlet piston assembly (42), the damper (44) is installed at the right end of the filter chamber of the filter box (40), the piston rod of the damper (44) is connected to the oil outlet piston assembly (42), the oil discharge pipe (45) is installed at the left end of the filter box (40), and the oil discharge pipe (45) extends into the tubular filter element ( The filter box (41) is provided with an oil drain pipe (46) at the right end of the filter box (40), and the oil drain pipe (46) extends into the interior of the tubular filter element (41). An oil storage pipe (47) is installed on the outer wall of the filter box (40), and the oil storage pipe (47) is communicated with the filter chamber of the filter box (40). A pressurizing piston (48) is slidably installed in the oil storage pipe (47), and the lower end of the piston pressure rod (49) is connected to the pressurizing piston (48). One end of a compression spring (50) is connected to the piston pressure rod (49), and the other end of the compression spring (50) is connected to the oil storage pipe (47).

9. A circuit breaker switch hydraulic oil filter as claimed in claim 5, characterized in that: The invention also comprises a temperature sensor (51), a pressure sensor 1 (52), a pressure sensor 2 (53) and a pressure sensor 3 (54). The temperature sensor (51) is installed on the pipeline (3). The temperature sensor (51) is used to detect the temperature of the hydraulic oil. The pressure sensor 1 (52) is installed between the oil-water separation component (5) and the adsorption box (27). The pressure sensor 1 (52) is used to detect the pressure of the hydraulic oil entering the adsorption box (27). The pressure sensor 2 (53) is installed between the adsorption box (27) and the filter component (6). The pressure sensor 2 (53) is used to detect the pressure of the hydraulic oil entering the filter component (6). The pressure sensor 3 (54) is installed on the oil delivery pipe (7). The pressure sensor 3 (54) is used to detect the pressure of the hydraulic oil output from the filter component (6).

Images