Double-diaphragm hydraulic valve

Abstract

The invention relates to the technical field of double-diaphragm hydraulic valves, in particular to a double-diaphragm hydraulic valve. A double-diaphragm hydraulic valve comprises a main valve shell and a side valve shell which are connected with each other, the main valve shell is communicated with an oil inlet pipe, an oil filter generation mechanism is installed on the inner top of the main valve shell, the oil filter generation mechanism is in transmission connection with an oil filter table capable of moving up and down in a reciprocating mode, a rotatable rotary sealing barrel shell and a rotatable mandrel, and the rotary sealing barrel shell is rotatably connected with the oil filter table. The mandrel is rotationally connected with the rotary sealing barrel shell, the rotary sealing barrel shell is communicated with an oil guide pipe, an oil filter element is rotationally installed at the eccentric position of the bottom face of the rotary sealing barrel shell, and the top end of the oil filter element is rotationally communicated with the oil guide pipe. The double-diaphragm hydraulic valve has the beneficial effects that when the double-diaphragm hydraulic valve is used, filtering operation of impurities in a hydraulic medium can be synchronously achieved, and when the double-diaphragm hydraulic valve filters the impurities in the hydraulic medium, the oil pressure of the hydraulic medium in the hydraulic valve can be improved through reciprocating deformation extrusion, and the filtering efficiency of the hydraulic medium is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of double diaphragm hydraulic valves, and particularly to a double diaphragm hydraulic valve. Background Art

[0002] A patent document with the publication number CN104564879B in the prior art discloses a double diaphragm hydraulic valve, including a hydraulic valve. Diaphragms are respectively installed at the upper end and the lower end of the valve core of the hydraulic valve, so that the valve core and the return spring are hermetically isolated from the control cavity and the main passage cavity respectively. An air vent is provided on the valve body of the hydraulic valve between the two diaphragms. The hydraulic valve is composed of a valve body, an upper diaphragm, a lower diaphragm, an upper cover, a valve core, a return spring and a valve seat. The upper part of the valve body forms a control cavity by the valve body, the upper cover and the upper part of the valve core. In the form of double diaphragms, the fluid controlling the movement of the valve core and the main passage fluid do not contact the valve core, and the valve core will not be contaminated, thus ensuring smooth sliding of the valve core. However, the above hydraulic valve has the following technical problems when in use:

[0003] 1. It is not convenient to synchronously perform the filtering operation of impurities in the hydraulic medium when the hydraulic valve is in use;

[0004] 2. When filtering impurities in the hydraulic medium, it is not convenient to increase the oil pressure of the hydraulic medium in the hydraulic valve and improve the filtering efficiency of the hydraulic medium by reciprocating deformation extrusion. At the same time, the existing device is not convenient to realize the extrusion type blockage removal of the hydraulic medium filtering structure;

[0005] Based on this, the present invention provides a double diaphragm hydraulic valve to solve the problems raised in the above background art. Summary of the Invention

[0006] In view of the technical problems existing in the prior art, the present invention provides a double diaphragm hydraulic valve to solve the problems that it is not convenient to synchronously perform the filtering operation of impurities in the hydraulic medium when the existing hydraulic valve is in use, it is not convenient to increase the oil pressure of the hydraulic medium in the hydraulic valve and improve the filtering efficiency of the hydraulic medium by reciprocating deformation extrusion during the filtering of impurities in the hydraulic medium, and the extrusion type blockage removal of the hydraulic medium filtering structure.

[0007] The technical solution for the present invention to solve the above technical problems is as follows: A double diaphragm hydraulic valve includes a main valve housing and a side valve housing connected to each other. An oil inlet pipe is communicated with the main valve housing. An oil filter generating mechanism is installed at the inner top of the main valve housing. An oil filter table that can reciprocate up and down, a rotatable sealing cylinder shell, and a rotatable core shaft are drivingly connected to the oil filter generating mechanism. The sealing cylinder shell is rotationally connected to the oil filter table, and the core shaft is rotationally connected to the sealing cylinder shell. A guide oil pipe is communicated with the sealing cylinder shell. An oil filter element is rotatably installed at an eccentric position on the bottom surface of the sealing cylinder shell. The top end of the oil filter element is rotationally communicated with the guide oil pipe. The oil filter element is drivingly connected to the core shaft through a coupling module. A deformation part is provided in the middle of the oil filter element. Multiple groups of oil filtering holes are provided in the deformation part. A positioning rotating seat is provided on the inner wall of the main valve housing at a position corresponding to the lower part of the deformation part. The oil filter element is rotationally connected to the positioning rotating seat. A dirt accumulation cavity communicated with the oil filter element is provided inside the main valve housing at a position corresponding to the lower part of the positioning rotating seat. A clean oil cavity is provided inside the main valve housing at a position corresponding to the space between the positioning rotating seat and the sealing cylinder shell. A double diaphragm assembly communicated with the clean oil cavity is provided inside the side valve housing. A reciprocating pressure increasing assembly for driving the deformation part to reciprocally deform is provided on the bottom surface of the sealing cylinder shell.

[0008] Further, the oil filter generating mechanism includes a bracket installed at the inner top of the main valve housing. A motor is installed on the bracket. An upper shaft and a side shaft are rotatably installed on the bracket. A first bevel gear is installed on the upper shaft. A second bevel gear is installed at the output shaft end of the motor and on the side shaft. Both of the two second bevel gears are drivingly connected to the first bevel gear. A square groove with an open top end and slidably connected to the upper shaft is fixedly provided on the core shaft. The cross sections of the square groove and the upper shaft are both regular polygons. An elastic resetting member is installed between the oil filter table and the bracket. An eccentric convex block is installed on the side shaft. A driven wheel is rotationally connected to the oil filter table. The driven wheel is adaptively connected to the eccentric convex block.

[0009] The beneficial effect of adopting the above further solution is that when this hydraulic valve is in the oil passing state, that is, when the flow sensors on the oil outlet pipe and the oil inlet pipe both generate data feedback, the motor outputs a rotational speed at a set power. After the motor outputs the rotational speed, through the settings of the eccentric convex block, the elastic resetting member, and the driven wheel, the oil filter table can reciprocate within a set stroke. When the oil filter table reciprocates within the set stroke, then the oil filter element reciprocates up and down in the clean oil cavity. By realizing the effect of the oil filter element reciprocating up and down in the clean oil cavity, the deformation part is driven to reciprocally contract and expand. Through the reciprocating deformation and expansion of the deformation part, the reciprocating pressure increasing of the oil body to be purified in the oil filter element is realized. Through the reciprocating pressure increasing of the oil in the oil filter element, the filtering efficiency of the oil from the oil filter element is effectively improved. And through the reciprocating deformation of the oil filter element, the impurities blocked in the oil filter element can be extruded in a deformed manner, thereby reducing the blockage rate of the oil filter element and realizing the deformed self-cleaning of the oil filter element to a certain extent.

[0010] Furthermore, the oil filter generating mechanism further includes a differential shaft rotatably mounted on the oil filter table. A differential bevel gear is mounted on the differential shaft. Third bevel gears are mounted on both the rotary seal cylinder shell and the core shaft, and the two third bevel gears are respectively arranged on both sides of the differential bevel gear.

[0011] The beneficial effect of adopting the above further solution is that after the motor outputs the rotational speed, due to the arrangement of the differential shaft, the rotary seal cylinder shell and the core shaft can rotate coaxially in opposite directions.

[0012] Furthermore, the coupling module includes a synchronous shaft rotatably connected inside the rotary seal cylinder shell. Upper gears are mounted on both the synchronous shaft and the core shaft, and the two upper gears mesh with each other. Middle gears are mounted on both the synchronous shaft and the oil filter element, and the two middle gears mesh with each other.

[0013] The beneficial effect of adopting the above further solution is that when the motor outputs the rotational speed, due to the arrangement of the synchronous shaft, during the process that the rotary seal cylinder shell drives the oil filter element to rotate in a revolution, the oil filter element can also rotate in a set-speed rotation. Through the synchronous occurrence of the eccentric revolution and self-rotation of the oil filter element, the purified oil in the purified oil cavity is disturbed and extruded, thereby improving the flow rate and disturbance rate of the oil in the purified oil cavity and reducing the solidification and viscosity rate of the hydraulic oil in the purified oil cavity.

[0014] Furthermore, the double diaphragm assembly includes an oil valve nozzle installed inside the side valve housing and communicating with the purified oil cavity. A flow channel and a pressure equalizing cavity are fixedly opened inside the side valve housing. An oil outlet pipe communicating with the flow channel is provided on the side of the side valve housing. A filter communicating with the pressure equalizing cavity is mounted on the side valve housing. A valve rod coaxially arranged with the oil valve nozzle is fixedly mounted on the inner wall of the side valve housing. A return spring is sleeved on the valve rod corresponding to the position of the pressure equalizing cavity. A lower diaphragm is mounted on the bottom surface of the valve rod, and the lower diaphragm is connected to the side valve housing. A control oil pipe is provided at the top of the side valve housing. An upper diaphragm is mounted on the inner wall of the side valve housing corresponding to the position between the control oil pipe and the valve rod.

[0015] The beneficial effect of adopting the above further solution is that during use, through the arrangement of the upper diaphragm and the lower diaphragm, the anti-pollution protection of the valve rod and the return spring is realized, and the pollution rate of the valve rod and the return spring to the hydraulic medium is reduced.

[0016] Further, the reciprocating supercharging assembly includes an eccentric shaft rotatably connected to the bottom surface of the rotary seal cylinder housing. Lower gears are installed on both the eccentric shaft and the oil filter element, and the two lower gears mesh with each other. A set of supercharging bumps is installed on the eccentric shaft, and the set of supercharging bumps are all in contact with the deformation part. An expansion bladder is arranged inside the oil filter element, and a connection joint is communicated with the bottom of the expansion bladder. The connection joint is rotatably connected to the oil filter element. An air pump is installed on the side valve housing, and the port of the air pump is communicated with the connection joint through a hose. A pressure probe is arranged at the connection between the air pump and the hose.

[0017] The beneficial effect of adopting the above further scheme is that during use, through the setting of the reciprocating supercharging assembly, the deformation part is driven to deform reciprocally, and the reciprocating contraction and expansion of the deformation part are realized in multiple directions, so as to play an auxiliary supercharging effect on the oil in the oil filter element. When the hydraulic valve is in the normal working mode, the gas inside the expansion bladder is fully emptied. When the hydraulic valve is in the closed state, the expansion bladder fully expands, and the deformation part fully expands, so as to realize the reset and shape retention of the deformation part, and then improve the deformable times and service life of the deformation part.

[0018] Further, it also includes a single-chip microcomputer installed on the main valve housing and a heater built in the main valve housing. The data end of the pressure probe is connected to the single-chip microcomputer in terms of data. A sewage discharge valve cooperating with the dirt accumulation cavity is arranged at the bottom of the main valve housing. Flow sensors connected to the single-chip microcomputer in terms of data are installed on both the oil outlet pipe and the oil inlet pipe.

[0019] The beneficial effect of adopting the above further scheme is that during use, through the detection setting of the data difference between the two flow sensors, the oil circuit connection state of the hydraulic valve and the blockage degree of the oil filter element can be judged.

[0020] Further, a sealing ring fitting with the main valve housing is fixedly arranged on the rotary seal cylinder housing. An oil guiding concave surface is arranged on the rotary seal cylinder housing, and the oil guiding pipe is communicated with the oil guiding concave surface. A set of pump blades distributed in a circumferential array are installed on the oil guiding concave surface.

[0021] The beneficial effect of adopting the above further scheme is that through the setting of the pump blades, the pressure of the oil in the main valve housing is increased.

[0022] Further, the deformation part is made of rubber material, and a set of spoiler plates distributed in a circumferential array are installed on the oil filter element at the position corresponding to the dirt accumulation cavity.

[0023] The beneficial effect of adopting the above further scheme is that through the setting of the spoiler plates, the oil stain in the dirt accumulation cavity is prevented from solidifying.

[0024] Compared with the prior art, the hydraulic valve elastic pin automatic press-fitting equipment has the following beneficial effects:

[0025] 1. When this double-diaphragm hydraulic valve is in use, it can synchronously perform the filtration operation of impurities in the hydraulic medium. Moreover, when the device filters the impurities in the hydraulic medium, it can improve the oil pressure of the hydraulic medium in the hydraulic valve and the filtration efficiency of the hydraulic medium by reciprocating deformation and extrusion. At the same time, the device can also realize the extrusion-type blockage removal of the hydraulic medium filtration structure.

[0026] 2. In the present invention, when this hydraulic valve is in the oil-passing state, that is, when the flow sensors on the oil outlet pipe and the oil inlet pipe both generate data feedback, the motor outputs a rotation speed at a set power. After the motor outputs the rotation speed, through the settings of the eccentric convex block, the elastic reset member, and the driven wheel, the oil filter table can reciprocate within a set stroke. When the oil filter table reciprocates within the set stroke, the oil filter element then reciprocates up and down in the clean oil chamber. By realizing the reciprocating up and down movement effect of the oil filter element in the clean oil chamber, the deformation part is driven to reciprocally contract and expand. Through the reciprocating deformation and expansion of the deformation part, the reciprocating pressurization of the oil to be purified in the oil filter element is realized. Through the reciprocating pressurization of the oil in the oil filter element, the filtration efficiency of the oil from the oil filter element is effectively improved. And through the reciprocating deformation of the oil filter element, the impurities blocked in the oil filter element can be extruded in a deformed manner, thereby reducing the blockage rate of the oil filter element and achieving a certain degree of self-cleaning of the oil filter element by deformation.

[0027] 3. In the present invention, when the motor outputs the rotation speed, through the setting of the synchronous shaft, when the rotary sealing cylinder shell drives the oil filter element to revolve and rotate, the oil filter element can also rotate self-revolve at a set speed. Through the synchronous occurrence of the eccentric revolution and self-rotation of the oil filter element, the clean oil in the clean oil chamber is disturbed and extruded, thereby improving the flow rate, disturbance rate of the oil in the clean oil chamber and reducing the solidification and viscosity rate of the hydraulic oil in the clean oil chamber.

[0028] 4. When the present invention is in use, through the setting of the reciprocating pressurization assembly, the deformation part is driven to reciprocally deform, and the reciprocating contraction and expansion of the deformation part are realized in multiple directions, thereby playing an auxiliary pressurization effect on the oil in the oil filter element. When the hydraulic valve is in the normal working mode, the gas inside the expansion bladder is fully emptied. When the hydraulic valve is in the closed state, the expansion bladder is fully expanded, and the deformation part is fully expanded, thereby realizing the reset and shape retention of the deformation part, and then increasing the deformable times and service life of the deformation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structural schematic diagram of a double-diaphragm hydraulic valve of the present invention;

[0030] Figure 2 For the present invention Figure 1 is the structural schematic diagram from another perspective;

[0031] Figure 3 For the present invention Figure 2Schematic cross-sectional structure diagram;

[0032] Figure 4 For the present invention Figure 3 Partial enlarged structure diagram at position A in the present invention;

[0033] Figure 5 For the present invention Figure 3 Partial enlarged structure diagram at position B in the present invention;

[0034] Figure 6 For the present invention Figure 3 Partial enlarged structure diagram at position C in the present invention;

[0035] Figure 7 Schematic structure diagram of the motor and oil guiding concave surface of the present invention;

[0036] Figure 8 Schematic structure diagram of the pump blade and pressure increasing convex block of the present invention;

[0037] Figure 9 Schematic structure diagram of the upper shaft and middle gear of the present invention.

[0038] In the drawings, the components represented by each reference numeral are listed as follows:

[0039] 1. Main valve housing; 2. Side valve housing; 3. Oil inlet pipe; 4. Oil filter table; 5. Rotary seal cylinder housing; 6. Oil guiding pipe; 7. Oil filter element; 8. Deformation part; 9. Oil filtering hole; 10. Positioning rotary seat; 11. Clean oil cavity; 12. Bracket; 13. Motor; 14. Upper shaft; 15. Side shaft; 16. Elastic reset member; 17. Eccentric convex block; 18. Driven wheel; 19. Synchronous shaft; 20. Upper gear; 21. Middle gear; 22. Oil valve nozzle; 23. Flow channel; 24. Flat pressure cavity; 25. Oil outlet pipe; 26. Filter; 27. Valve rod; 28. Return spring; 29. Lower diaphragm; 30. Control oil pipe; 31. Upper diaphragm; 32. Eccentric shaft; 33. Lower gear; 34. Pressure increasing convex block; 35. Expansion bladder ball; 36. Air pump; 37. Turbulence generating fin; 38. Single-chip microcomputer; 39. Drain valve; 40. Flow sensor; 41. Oil guiding concave surface; 42. Pump blade; 43. Heater; 44. Core shaft; 45. Differential shaft. Detailed implementation manners

[0040] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0041] As Figures 1-9 shown, a double-diaphragm hydraulic valve includes a main valve housing 1 and a side valve housing 2 connected to each other, and also includes a single-chip microcomputer 38 installed on the main valve housing 1 and a heater 43 built in the main valve housing 1;

[0042] An oil inlet pipe 3 is connected to the main valve housing 1. An oil filter generating mechanism is installed at the inner top of the main valve housing 1. An oil filter table 4 that can reciprocate up and down, a rotatable rotary sealing cylinder housing 5, and a rotatable core shaft 44 are drivingly connected to the oil filter generating mechanism. The rotary sealing cylinder housing 5 is rotationally connected to the oil filter table 4, and the core shaft 44 is rotationally connected to the rotary sealing cylinder housing 5;

[0043] A sealing ring that fits the main valve housing 1 is fixedly arranged on the rotary sealing cylinder housing 5;

[0044] An oil guide pipe 6 is connected to the rotary sealing cylinder housing 5. An oil guide concave surface 41 is arranged on the rotary sealing cylinder housing 5. The oil guide pipe 6 is communicated with the oil guide concave surface 41. A group of pump blades 42 distributed in a circumferential array are installed on the oil guide concave surface 41.

[0045] Through the arrangement of the pump blades 42, the pressure of the oil in the main valve housing 1 is increased;

[0046] An oil filter element 7 is rotationally installed at an eccentric position on the bottom surface of the rotary sealing cylinder housing 5. The top end of the oil filter element 7 is rotationally communicated with the oil guide pipe 6. The oil filter element 7 is drivingly connected to the core shaft 44 through a coupling module;

[0047] The oil filter generating mechanism includes a bracket 12 installed at the inner top of the main valve housing 1. A motor 13 is installed on the bracket 12. An upper shaft 14 and a side shaft 15 are rotationally installed on the bracket 12. A first bevel gear is installed on the upper shaft 14. A second bevel gear is installed at the output shaft end of the motor 13 and on the side shaft 15. Both second bevel gears are drivingly connected to the first bevel gear. A square groove with an open top and slidably connected to the upper shaft 14 is fixedly opened on the core shaft 44. The cross sections of the square groove and the upper shaft 14 are both regular polygons. An elastic reset member 16 is installed between the oil filter table 4 and the bracket 12. An eccentric cam 17 is installed on the side shaft 15. A driven wheel 18 is rotationally connected to the oil filter table 4. The driven wheel 18 is adaptively connected to the eccentric cam 17.

[0048] When the double diaphragm hydraulic valve is in the oil-passing state, that is, the flow sensors 40 on the oil outlet pipe 25 and the oil inlet pipe 3 generate data feedback, the motor 13 outputs the speed at the set power. After the motor 13 outputs the speed, the eccentric protrusion 17, the elastic reset member 16 and the driven wheel 18 are set, so that the oil filter station 4 can reciprocate within the set stroke. When the oil filter station 4 reciprocates within the set stroke, the oil filter element 7 is reciprocated up and down in the clean oil chamber 11. 11 realizes the up and down reciprocating movement effect, thereby driving the deformation part 8 to reciprocate and contract and expand, and through the reciprocating deformation and expansion of the deformation part 8, the reciprocating pressurization of the oil to be purified in the oil filter element 7 is realized, and the reciprocating pressurization of the oil in the oil filter element 7 is effectively improved, and the impurities blocked in the oil filter element 7 can be deformed and squeezed out through the reciprocating deformation of the oil filter element 7, thereby reducing the blockage rate of the oil filter element 7 and realizing the deformation self-cleaning of the oil filter element 7 to a certain extent.

[0049] The oil filter mechanism also includes a differential shaft 45 rotatably mounted on the oil filter platform 4, a differential bevel gear is mounted on the differential shaft 45, a third bevel gear is mounted on both the rotary seal shell 5 and the core shaft 44, and two third bevel gears are respectively arranged on both sides of the differential bevel gear.

[0050] After the motor 13 outputs the rotation speed, the differential shaft 45 is arranged so that the rotary seal shell 5 and the core shaft 44 can rotate coaxially and in opposite directions.

[0051] The coupling module includes a synchronous shaft 19 rotatably connected to the rotary seal shell 5. The synchronous shaft 19 and the core shaft 44 are both equipped with upper gears 20, and the two upper gears 20 are meshed with each other. The synchronous shaft 19 and the oil filter element 7 are both equipped with middle gears 21, and the two middle gears 21 are meshed with each other.

[0052] When the motor 13 outputs the speed, the synchronous shaft 19 is set so that the oil filter element 7 can rotate at a set speed while the rotary seal shell 5 drives the oil filter element 7 to rotate. The eccentric revolution and rotation of the oil filter element 7 occur synchronously, so that the clean oil in the clean oil chamber 11 is disturbed and squeezed, thereby improving the flow rate and disturbance rate of the oil in the clean oil chamber 11 and reducing the solidification and viscosity of the hydraulic oil in the clean oil chamber 11.

[0053] A deformation part 8 is provided in the middle of the oil filter element 7, and the deformation part 8 is made of rubber;

[0054] The deformation part 8 is provided with a plurality of groups of oil filter holes 9, the inner wall of the main valve housing 1 and the position corresponding to the position below the deformation part 8 are provided with a positioning rotary seat 10, the oil filter element 7 is rotatably connected with the positioning rotary seat 10, and the interior of the main valve housing 1 and the position corresponding to the position below the positioning rotary seat 10 are provided with a dirt storage chamber connected with the oil filter element 7;

[0055] A drain valve 39 that cooperates with the dirt accumulation chamber is provided at the bottom of the main valve housing 1;

[0056] A group of spoiler vanes 37 distributed in a circumferential array are installed on the oil filter element 7 at a position corresponding to the dirt accumulation chamber.

[0057] Through the setting of the spoiler vanes 37, the oil stain in the dirt accumulation chamber is prevented from solidifying.

[0058] A clean oil chamber 11 is provided inside the main valve housing 1 at a position corresponding to between the positioning swivel base 10 and the rotary seal cylinder housing 5. A double diaphragm assembly communicating with the clean oil chamber 11 is provided inside the side valve housing 2. A reciprocating pressure boosting assembly for driving the deformation part 8 to reciprocate is provided on the bottom surface of the rotary seal cylinder housing 5.

[0059] The double diaphragm assembly includes an oil valve nozzle 22 installed inside the side valve housing 2 and communicating with the clean oil chamber 11. A flow channel 23 and a pressure equalizing chamber 24 are fixedly formed inside the side valve housing 2. An oil outlet pipe 25 communicating with the flow channel 23 is provided on the side surface of the side valve housing 2. A filter 26 communicating with the pressure equalizing chamber 24 is installed on the side valve housing 2. A valve rod 27 coaxially arranged with the oil valve nozzle 22 is fixedly installed on the inner wall of the side valve housing 2. A return spring 28 is sleeved on the valve rod 27 at a position corresponding to the pressure equalizing chamber 24. A lower diaphragm 29 is installed on the bottom surface of the valve rod 27. The lower diaphragm 29 is connected to the side valve housing 2. A control oil pipe 30 is provided at the top of the side valve housing 2. An upper diaphragm 31 is installed on the inner wall of the side valve housing 2 at a position corresponding to between the control oil pipe 30 and the valve rod 27.

[0060] During use, through the setting of the upper diaphragm 31 and the lower diaphragm 29, the anti-pollution protection of the valve rod 27 and the return spring 28 is realized, and the pollution rate of the valve rod 27 and the return spring 28 to the hydraulic medium is reduced.

[0061] The reciprocating pressure boosting assembly includes an eccentric shaft 32 rotatably connected to the bottom surface of the rotary seal cylinder housing 5. Lower gears 33 are installed on both the eccentric shaft 32 and the oil filter element 7. The two lower gears 33 mesh with each other. A group of pressure boosting bumps 34 are installed on the eccentric shaft 32. The group of pressure boosting bumps 34 are all in contact with the deformation part 8. An expansion bladder 35 is provided inside the oil filter element 7. A connection joint is communicated with the bottom of the expansion bladder 35. The connection joint is rotatably connected to the oil filter element 7. An air pump 36 is installed on the side valve housing 2. The port of the air pump 36 is communicated with the connection joint through a hose. A pressure probe 37 is provided at the communication part of the air pump 36 and the hose. The data end of the pressure probe 37 is data-connected to the single-chip microcomputer 38.

[0062] During use, through the setting of the reciprocating supercharging assembly, the deformation part 8 is driven to deform reciprocally, and the reciprocating contraction and expansion of the deformation part 8 are realized in multiple directions, so as to achieve an auxiliary supercharging effect on the oil in the oil filter element 7. When the hydraulic valve is in the normal working mode, the gas inside the expansion bladder 35 is fully emptied. When the hydraulic valve is in the closed state, the expansion bladder 35 expands fully, and the deformation part 8 expands fully, so as to realize the reset holding and shape holding of the deformation part 8, and then improve the deformable times and service life of the deformation part 8.

[0063] Flow sensors 40 connected to the data of the single-chip microcomputer 38 are installed on both the oil outlet pipe 25 and the oil inlet pipe 3.

[0064] During use, through the data difference detection setting of the two flow sensors 40, the oil circuit connection state of the hydraulic valve and the blockage degree of the oil filter element 7 are judged.

[0065] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double diaphragm hydraulic valve, comprising a main valve housing (1) and a side valve housing (2) connected to each other, wherein the main valve housing (1) is connected to an oil inlet pipe (3), characterized in that: An oil filter mechanism is installed at the inner top of the main valve housing (1), and the oil filter mechanism is connected to an oil filter platform (4) that can reciprocate up and down, a rotatable rotary seal shell (5) and a rotatable core shaft (44). The rotary seal shell (5) is rotatably connected to the oil filter platform (4), and the core shaft (44) is rotatably connected to the rotary seal shell (5). The rotary seal shell (5) is connected to an oil guide pipe (6). An oil filter element (7) is rotatably installed at an eccentric position on the bottom surface of the rotary seal shell (5). The top end of the oil filter element (7) is rotatably connected to the oil guide pipe (6). The oil filter element (7) is connected to the core shaft (44) through a coupling module. A deformation portion (8) is provided in the middle of the oil filter element (7). ), the deformation part (8) is provided with a plurality of groups of oil filter holes (9), the inner wall of the main valve housing (1) and the position corresponding to the position below the deformation part (8) are provided with a positioning rotary seat (10), the oil filter element (7) is rotatably connected to the positioning rotary seat (10), the interior of the main valve housing (1) and the position corresponding to the position below the positioning rotary seat (10) are provided with a dirt storage chamber connected to the oil filter element (7), the interior of the main valve housing (1) and the position corresponding to the position between the positioning rotary seat (10) and the rotary sealing shell (5) are provided with a clean oil chamber (11), the interior of the side valve housing (2) is provided with a double diaphragm assembly connected to the clean oil chamber (11), and the bottom surface of the rotary sealing shell (5) is provided with a reciprocating booster assembly for driving the deformation part (8) to reciprocate.

2. A double diaphragm hydraulic valve according to claim 1, characterized in that: The oil filter generating mechanism comprises a bracket (12) mounted on the top of the main valve housing (1), a motor (13) mounted on the bracket (12), an upper shaft (14) and a side shaft (15) rotatably mounted on the bracket (12), a first bevel gear mounted on the upper shaft (14), a second bevel gear mounted on the output shaft end of the motor (13) and the side shaft (15), the two second bevel gears are both drivingly connected to the first bevel gear, a square groove with a top opening fixedly opened on the core shaft (44) and slidably connected to the upper shaft (14), the cross sections of the square groove and the upper shaft (14) are both regular polygons, an elastic reset member (16) is mounted between the oil filter station (4) and the bracket (12), an eccentric protrusion (17) is mounted on the side shaft (15), a driven wheel (18) is rotatably connected to the oil filter station (4), and the driven wheel (18) is adaptively connected to the eccentric protrusion (17).

3. A double diaphragm hydraulic valve according to claim 2, characterized in that: The oil filter generating mechanism also includes a differential shaft (45) rotatably mounted on the oil filter platform (4), a differential bevel gear is mounted on the differential shaft (45), a third bevel gear is mounted on both the rotary seal shell (5) and the core shaft (44), and two third bevel gears are respectively arranged on both sides of the differential bevel gear.

4. A double diaphragm hydraulic valve according to claim 1, characterized in that: The coupling module comprises a synchronous shaft (19) rotatably connected to the rotary seal shell (5); the synchronous shaft (19) and the core shaft (44) are both provided with an upper gear (20), the two upper gears (20) are meshed with each other; the synchronous shaft (19) and the oil filter element (7) are both provided with a middle gear (21), the two middle gears (21) are meshed with each other.

5. A double diaphragm hydraulic valve according to claim 1, characterized in that: The double diaphragm assembly comprises an oil valve nozzle (22) installed inside the side valve housing (2) and connected to the clean oil chamber (11); a flow channel (23) and a pressure-equalizing chamber (24) are fixedly provided inside the side valve housing (2); an oil outlet pipe (25) connected to the flow channel (23) is provided on the side of the side valve housing (2); a filter (26) connected to the pressure-equalizing chamber (24) is installed on the side valve housing (2); and a filter (26) connected to the oil valve nozzle (24) is fixedly installed on the inner wall of the side valve housing (2). 22) a valve stem (27) coaxially arranged, a return spring (28) is sleeved on the valve stem (27) and at a position corresponding to the equalizing pressure chamber (24), a lower diaphragm (29) is installed on the bottom surface of the valve stem (27), the lower diaphragm (29) is connected to the side valve housing (2), a control oil pipe (30) is provided at the top end of the side valve housing (2), and an upper diaphragm (31) is installed on the inner wall of the side valve housing (2) and at a position corresponding to the control oil pipe (30) and the valve stem (27).

6. A double diaphragm hydraulic valve according to claim 5, characterized in that: The reciprocating booster assembly comprises an eccentric shaft (32) rotatably connected to the bottom surface of the rotary seal cylinder shell (5), the eccentric shaft (32) and the oil filter element (7) are both provided with lower gears (33), the two lower gears (33) are meshed with each other, a group of booster bumps (34) are provided on the eccentric shaft (32), and the group of booster bumps (34) are all in contact with the deformation part (8), an expansion sac (35) is provided on the inner side of the oil filter element (7), the bottom of the expansion sac (35) is connected with a connecting joint, and the connecting joint is rotatably connected to the oil filter element (7), an air pump (36) is installed on the side valve shell (2), the port of the air pump (36) is connected with the connecting joint through a hose, and an air pressure probe (37) is provided at the connection point between the air pump (36) and the hose.

7. A double diaphragm hydraulic valve according to claim 6, characterized in that: It also includes a single chip microcomputer (38) installed on the main valve housing (1) and a heater (43) built into the main valve housing (1); the data end of the air pressure probe (37) is data-connected to the single chip microcomputer (38); a sewage valve (39) cooperating with the sewage storage chamber is provided at the bottom of the main valve housing (1); and flow sensors (40) data-connected to the single chip microcomputer (38) are installed on the oil outlet pipe (25) and the oil inlet pipe (3).

8. A double diaphragm hydraulic valve according to claim 1, characterized in that: A sealing ring that fits the main valve housing (1) is fixedly arranged on the rotary seal cylinder housing (5), an oil guide concave surface (41) is arranged on the rotary seal cylinder housing (5), the oil guide pipe (6) is connected to the oil guide concave surface (41), and a group of pump blades (42) distributed in a circumferential array are installed on the oil guide concave surface (41).

9. A double diaphragm hydraulic valve according to claim 1, characterized in that: The deformable portion (8) is made of rubber material, and a group of spoilers (37) distributed in a circular array are installed on the oil filter element (7) at a position corresponding to the dirt storage cavity.

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