CN110761998A - Internal shrinkage type isolation compensation type gear pump based on hydraulic system - Google Patents
Internal shrinkage type isolation compensation type gear pump based on hydraulic system Download PDFInfo
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- CN110761998A CN110761998A CN201911097706.3A CN201911097706A CN110761998A CN 110761998 A CN110761998 A CN 110761998A CN 201911097706 A CN201911097706 A CN 201911097706A CN 110761998 A CN110761998 A CN 110761998A
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- compensation
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- 238000002955 isolation Methods 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 33
- 239000003921 oil Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229920002379 silicone rubber Polymers 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 3
- 239000004964 aerogel Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 24
- 238000006073 displacement reaction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 12
- 230000002441 reversible effect Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 50
- 238000001125 extrusion Methods 0.000 description 16
- 238000007906 compression Methods 0.000 description 15
- 230000006835 compression Effects 0.000 description 12
- 239000010720 hydraulic oil Substances 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 8
- 239000004965 Silica aerogel Substances 0.000 description 6
- 230000008602 contraction Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 206010063659 Aversion Diseases 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a retraction type isolation compensation type gear pump based on a hydraulic system, which belongs to the field of gear pumps, and can effectively increase the strength of the inner wall of a gear by arranging a plurality of point reinforcing layers so as to effectively reduce the speed of abrasion caused by the surfaces of the gear and a rotating shaft, when the gear is stressed unevenly, reverse thrust can be generated on a single-point top block by arranging the retraction compensation block so as to achieve the effect of effectively preventing the gear from continuously generating displacement, thereby achieving a certain compensation effect on the uneven stress of the gear, effectively removing the overlarge stress from the oil inlet direction, and in the process, the gear is difficult to contact with the rotating shaft even if the gear is deviated due to the action of the single-point top block and the retraction compensation block, thereby reducing the phenomena of abrasion and deformation caused by the uneven stress between the gear and the rotating shaft, thereby remarkably prolonging the service life of the gear and the rotating shaft.
Description
Technical Field
The invention relates to the field of gear pumps, in particular to a retraction type isolation compensation type gear pump based on a hydraulic system.
Background
The gear pump is driven by an independent motor, and upstream pressure pulsation and flow fluctuation can be effectively blocked. The pressure pulsation at the outlet of the gear pump can be controlled within 1%. A gear pump is adopted on an extrusion production line, so that the flow output speed can be improved, and the shearing and residence time of materials in the extruder is reduced.
Gear pumps are rotary pumps that deliver or pressurize fluid by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear. Two gears, pump body and front and back covers form two closed spaces, when the gears rotate, the space on the gear disengagement side becomes larger from smaller to larger to form vacuum to suck liquid, and the space on the gear engagement side becomes smaller from larger to smaller to squeeze liquid into the pipeline. The suction chamber and the discharge chamber are separated by a meshing line of two gears. The pressure at the discharge of the gear pump is entirely dependent on the amount of resistance at the pump outlet.
Because the right side of gear pump presses the oil chamber, the left side is inhales the oil chamber, the pressure that leads to two chambeies is unbalanced, at the oil feed in-process, under the pressure effect, the hydraulic oil of inlet one side can be bigger than the impact force of the hydraulic oil of outlet one side to the gear, thereby lead to the gear atress inequality, certain displacement can take place for the gear, the inner wall of gear inlet one side can be close to the pivot gradually promptly, the two can contact each other even, and then lead to the two wearing and tearing with higher speed, can lead to the bending deformation of pivot even, lead to life to reduce.
Disclosure of Invention
1. Technical problem to be solved
In view of the problems in the prior art, the invention aims to provide a retraction type isolation compensation type gear pump based on a hydraulic system, which is characterized in that through the arrangement of a multi-point reinforcing layer, can effectively increase the strength of the inner wall of the gear, thereby effectively reducing the speed of the gear and the surface of the rotating shaft which are abraded, when the stress is uneven, the reverse thrust can be generated to the single-point top block through the arrangement of the inward shrinkage compensation block, thereby effectively preventing the gear from continuously generating displacement, achieving a certain compensation effect on the uneven stress of the gear, effectively removing the overlarge stress from the oil inlet direction, and in the process, due to the action of the single-point top block and the retraction compensation block, even if the gear is deviated, the gear and the rotating shaft are difficult to contact with each other, thereby reducing the phenomena of abrasion and deformation caused by uneven stress between the gear and the rotating shaft, and obviously prolonging the service life of the gear and the rotating shaft.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A retraction type isolation compensation type gear pump based on a hydraulic system comprises a gear pump body, wherein the left end and the right end of the gear pump body are respectively provided with an oil inlet and an oil outlet, two rotating shafts are arranged inside the gear pump body, the outer ends of the rotating shafts are provided with gears, the two gears are meshed and connected, the surface of each rotating shaft is provided with a plurality of uniformly distributed retraction grooves, retraction compensation blocks are arranged inside the retraction grooves, the outer surfaces of the retraction compensation blocks are flush with the surface of the rotating shaft, the inner wall of each gear is provided with a multi-point reinforcing layer, the multi-point reinforcing layer comprises a reinforcing inner ring, a plurality of uniformly distributed single-point raised blocks and single-point top blocks, the single-point raised blocks and the single-point top blocks are embedded inside the reinforcing inner ring, one end, close to the rotating shaft, of each single-point raised block penetrates through the reinforcing inner ring and extends out of the reinforcing inner ring, and the single-point raised blocks, the reinforcing inner ring and the single-point convex block are fixedly connected with the inner wall of the gear, one end of the single-point top block is fixedly connected with two adjacent single-point convex blocks, the other end of the single-point top block is matched with the inner shrinkage compensation block, the strength of the inner wall of the gear can be effectively increased through the arrangement of the multi-point reinforcing layer, so that the speed of the gear and the surface of the rotating shaft which are abraded is effectively reduced, when the gear and the rotating shaft are stressed unevenly, reverse thrust can be generated on the single-point top block through the arrangement of the inner shrinkage compensation block, further, the effect of effectively preventing the gear from continuously generating displacement is achieved, a certain compensation effect is achieved on uneven stress of the gear, excessive stress from the oil inlet direction is effectively removed, in the process, even if the gear is deviated due to the effects of the single-point top block and the inner shrinkage compensation block, the gear and the rotating shaft are difficult to contact with each other, so that the phenomena of abrasion and deformation caused by, thereby remarkably prolonging the service life of the gear and the rotating shaft.
Further, the arc structure of single-point protruding piece for facing the pivot hunch-up, and the summit and the reinforcement inner ring inner wall parallel and level that single-point protruding piece was hunched up can effectively increase the intensity of gear inner wall and reinforcement inner ring through reinforcing the inner ring for when hydraulic oil led to the fact the gear atress inequality through the gear pump body, make its inner wall hardly worn and torn, and then effectively reduce because of gear inner wall wearing and tearing, unstable problem when causing gear revolve.
Further, the internal shrinkage compensation block comprises a fixed resistance plate and a movable resistance plate, the fixed resistance plate is fixedly connected with the inner bottom end of the rotating shaft, a variable layer is fixedly connected between the fixed resistance plate and the movable resistance plate, when the gear is inclined to a certain degree due to uneven stress, the extrusion force between the inner wall of the left side of the gear and the rotating shaft is increased along the flow direction of hydraulic oil, and the single-point top block near the stress point where the extrusion force is increased generates a reverse jacking force through the internal shrinkage compensation block, so that the stress transfer is realized, the contact force between the surface of the rotating shaft and the inner wall of the gear is removed, the internal shrinkage process of the internal shrinkage compensation block in the internal shrinkage groove is extruded, the uneven stress of the inner wall of the gear and the surface of the rotating shaft is effectively compensated, the time for damaging the gear and the rotating shaft is effectively prolonged, and the service life is prolonged.
Furthermore, the fixed resistance plate and the movable resistance plate are both made of neodymium iron boron magnets, and the magnetic poles of the ends of the fixed resistance plate and the movable resistance plate which are close to each other are the same, so that repulsion exists between the fixed resistance plate and the movable resistance plate, the closer the fixed resistance plate and the movable resistance plate, the larger the repulsion, the stronger the compensation effect on gear displacement, when the gear does not rotate, the gear and the rotating shaft are in a balance position, the extrusion force of each single-point top block on the inward shrinkage compensation block is the same, when the gear pump is in use, the extrusion force of the single-point top block close to the oil inlet is larger by the gear which has certain offset, when the fixed resistance plate and the movable resistance plate are close to each other, but the repulsion between the fixed resistance plate and the movable resistance plate which are close to each other is increased, reverse thrust can be generated on the single-point top block, further, the displacement of the gear can be effectively prevented, and the uneven stress of the, excessive stress from the oil inlet direction is effectively removed.
Further, decide the terminal surface that hinders board, move and hinder board and single-point kicking block and be close to the pivot and be the arc structure of concentric circles for the three radian can laminate each other, and then when the compensation piece that contracts in receiving the extrusion, and decide and hinder the board and move and hinder and when producing the repulsion between the board, the single-point kicking block, decide and hinder the board and move the atress on board surface and can be more even, make the compensation piece that contracts in-process movement track including contracting more stable, make it difficult emergence rock.
Further, move and hinder board upper end fixedly connected with self-lubricating layer, self-lubricating layer include with move and hinder board upper surface fixedly connected with wear-resisting board, the embedded graphite lubrication point that is equipped with a plurality of evenly distributed of wear-resisting board, self-lubricating layer can effectively reduce the friction between single-point kicking block and the moving and hindering board here, effectively reduces wearing and tearing between the two, improves life.
Further, the terminal surface of wear-resisting board and single-point kicking block all adopts silica aerogel material to make, and silica aerogel matter is light, hardness intensity is high, antifriction ability reinforce for wear-resisting board and single-point kicking block are difficult because of the uneven quilt of atress wearing and tearing, and then prolong its life.
Furthermore, decide the interior bottom surface that the check board paved the interior shrinkage pool for decide the effective area maximize of producing the repulsion between check board and the movable check board, even move the check board because great repulsion takes place certain aversion, the direct relative area of the two can not diminish because of shifting, thereby effectively guarantee the repulsion intensity between the two, effectively guarantee the compensation effect of interior shrink compensation piece to inhomogeneous power, the distance is too big apart from 0.8-1cm in the shrinkage pool inner wall in the movable check board outer end, then moves the check board undersize, can make and decide the repulsion undersize between check board and the movable check board, and the distance undersize can influence the removal of movable check board in the interior shrinkage pool, and the thickness of wrapping up outside the movable check board apart from the undersize pressure change layer for its protection and limiting displacement to moving the check board is not obvious undersize.
Furthermore, press the change layer including the elastic seal bag for the deformation can take place after the atress in the pressure change layer, along with the atress is bigger and bigger, press the change layer deformation bigger and bigger, can extend to both sides, can continue upwards extending until with the contact of the tank inner wall that contracts in, make the movable resistance board wrapped up, thereby make its position injectd, effectively prevent because of the too big instability that causes of repulsion between movable resistance board and the fixed resistance board, make it hardly move about in the tank that contracts in, and then improve at gear revolve's stability, the inside parcel of elastic seal bag has non-Newton fluid material, non-Newton fluid material is after the atress, the stress point can harden rapidly, can unload the atress of partial oil inlet one side fast, and then effectively improve the compensation effect of the compensation piece that contracts in to inhomogeneous atress.
Furthermore, the elastic sealing bag is made of silicon rubber with a LINE-X coating layer with the surface coated with the thickness of 0.5-1mm, the silicon rubber is stable in chemical property and has elasticity, when the inward shrinkage compensation block is stressed, the compression layer can adapt to the deformation requirement of the elastic sealing bag, meanwhile, the LINE-X coating layer can increase the elasticity and the tensile property of the elastic sealing bag, the compression layer is difficult to age due to stress in the compression process, the service life of the compression layer is prolonged, and the proportion of the non-Newtonian fluid material between the vertical thickness filled in the elastic sealing bag and the height of the compression layer is 1: 2-3, the deformation degree of the pressure change layer is easily influenced due to excessive filling of the non-Newtonian fluid material, and the effect of the non-Newtonian fluid material on the larger uneven force on the side of the oil inlet is not obvious due to insufficient filling.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through the setting of multiple spot back up coat, can effectively increase the intensity of gear inner wall, thereby effectively reduce the speed because of gear and pivot surface are worn and torn, when the atress is uneven, through the setting of the compensation piece that contracts in, can produce reverse thrust to the single-point kicking block, and then reach the effect that effectively prevents the gear and continue to produce the displacement, thereby reach certain compensating action to the atress inequality of gear, effectively remove the too big atress that comes from the oil feed direction, and at this in-process, because the effect of single-point kicking block and the compensation piece that contracts in, make the gear even take place the skew, gear and pivot also hardly contact each other, thereby reduce the phenomenon of wearing and tearing and deformation that cause because of the atress is uneven between the two, thereby show the life of extension gear and pivot.
(2) The arc structure of single-point protruding piece for encircleing towards the pivot, and the summit and the reinforcement inner ring inner wall parallel and level that the single-point protruding piece was encircleed can effectively increase the intensity of gear inner wall and reinforcement inner ring through reinforcing the inner ring for when hydraulic oil caused the gear atress inequality through the gear pump body, make its inner wall hardly by wearing and tearing, and then effectively reduce because of gear inner wall wearing and tearing, unstable problem when causing gear revolve.
(3) The compensation piece that contracts in is including deciding the resistance board and moving the resistance board, decide resistance board and pivot inner bottom fixed connection, decide the resistance board and move between the resistance board fixed connection and have the compression layer, when the gear atress inequality makes it have certain slope, along the flow direction of hydraulic oil, the extrusion force grow of contact between gear left side inner wall and the pivot, this moment through the setting of the compensation piece that contracts in, can produce a reverse apical force to the near single-point kicking block of stress point that the extrusion force becomes big, thereby realize the transfer of atress, remove the contact force between pivot surface and the gear inner wall, the process that the compensation piece contracts to the inslot that contracts is extrudeed through contracting in, effective compensation gear inner wall and the inhomogeneous atress on pivot surface, and then effectively prolong gear and pivot damaged time, and prolonged service life.
(4) The fixed resistance plate and the movable resistance plate are both made of neodymium iron boron magnets, and the magnetic poles of the ends, close to each other, of the fixed resistance plate and the movable resistance plate are the same, so that repulsion exists between the fixed resistance plate and the movable resistance plate, the closer the fixed resistance plate and the movable resistance plate, the larger the repulsion, the stronger the compensation effect on gear displacement, when the gear does not rotate, the gears and the rotating shaft are in a balance position, the extrusion force of each single-point top block on the inward shrinkage compensation block is the same, when the gear pump is in use, the extrusion force of the single-point top block, close to the oil inlet, of the gear is larger, when the fixed resistance plate and the movable resistance plate are close to each other, but the repulsion between the fixed resistance plate and the movable resistance plate, which are close to each other, can generate reverse thrust on the single-point top block, further, the effective prevention of gear displacement is achieved, and therefore, a certain compensation effect on, excessive stress from the oil inlet direction is effectively removed.
(5) Decide the holding plate, move the holding plate and the terminal surface that the single-point kicking block is close to the pivot is the arc structure of concentric circles for the three radian can laminate each other, and then when the compensation piece that contracts in receiving the extrusion, and decide the holding plate and move and produce the repulsion between the holding plate, the single-point kicking block, decide the holding plate and move the atress on holding plate surface and can be more even, make the compensation piece that contracts in including contract in-process movement track more stable, make it difficult the emergence rock.
(6) Move and hinder board upper end fixedly connected with self-lubricating layer, self-lubricating layer include with move and hinder board upper surface fixedly connected with wear-resisting board, the embedded graphite lubrication point that is equipped with a plurality of evenly distributed of wear-resisting board, self-lubricating layer can effectively reduce the single-point kicking block here and move the frictional force between the board, effectively reduces wearing and tearing between the two, improves life.
(7) The terminal surface of wear-resisting board and single-point kicking block all adopts silica aerogel material to make, and silica aerogel matter is light, hardness intensity is high, antifriction ability reinforce for wear-resisting board and single-point kicking block are difficult because of the uneven quilt wearing and tearing of atress, and then prolong its life.
(8) Decide the interior bottom surface that hinders the board and pave the interior groove that contracts fully, make the area maximize of the effect of producing repulsion between fixed hindering board and the movable hindering board, even move the hindering board because great repulsion takes place certain aversion, the direct relative area of the two can not diminish because of shifting, thereby effectively guarantee the repulsion intensity between the two, effectively guarantee the compensation of interior shrink compensation piece to uneven power, move the outer end of hindering board apart from interior inslot wall 0.8-1cm, the distance is too big, then move the hindering board undersize, can make and decide the hindering board and move the repulsion undersize between the hindering board, the distance undersize, can influence the removal of moving the hindering board at interior inslot, and the distance undersize compression layer parcel can the undersize outside moving the hindering board, make its protection and limiting displacement to moving the hindering board unobvious.
(9) The pressure becomes the layer including the elastic seal bag, make the pressure becomes the layer and can take place deformation after the atress, along with the atress is bigger and bigger, it becomes bigger and bigger to press the deformation of change layer, can extend to both sides, can continue upwards to extend until contacting with the internal groove inner wall that contracts, make the movable resistance board wrapped up, thereby make its position injectd, the instability that effective prevention caused because of repulsion is too big between movable resistance board and the fixed resistance board, make it hardly move about in the internal groove that contracts, and then improve at gear revolve's stability, the inside parcel of elastic seal bag has non-Newton fluid material, non-Newton fluid material is after the atress, the stress point can harden the thickening rapidly, can unload the atress on one side of partial oil inlet fast, and then effectively improve the compensation effect of internal contraction compensation piece to inhomogeneous atress.
(10) The elastic sealing bag is made of silicon rubber coated with a LINE-X coating with the thickness of 0.5-1mm, the silicon rubber is stable in chemical property and has elasticity, when the inward shrinkage compensation block is stressed, a compression layer can adapt to the deformation requirement of the elastic sealing bag, meanwhile, the LINE-X coating can increase the elasticity and the tensile property of the elastic sealing bag, the compression layer is difficult to age due to stress in the compression process, the service life of the compression layer is prolonged, and the proportion of the non-Newtonian fluid material between the vertical thickness filled in the elastic sealing bag and the height of the compression layer is 1: 2-3, the deformation degree of the pressure change layer is easily influenced due to excessive filling of the non-Newtonian fluid material, and the effect of the non-Newtonian fluid material on the larger uneven force on the side of the oil inlet is not obvious due to insufficient filling.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the gear of the present invention;
FIG. 3 is a schematic structural view of a section of a rotating shaft according to the present invention;
FIG. 4 is a schematic structural view of a cross section A in FIG. 3;
FIG. 5 is a schematic structural view of a portion of the self-lubricating layer of the present invention;
FIG. 6 is a schematic structural view of a multi-point reinforcing layer at the inner wall of the gear according to the present invention;
FIG. 7 is a schematic view of the structure at B in FIG. 6;
fig. 8 is a schematic structural diagram of gear shifting caused by uneven stress in the prior art.
The reference numbers in the figures illustrate:
1 gear pump body, 2 gears, 3 rotating shafts, 4 reinforcing inner rings, 5 single-point convex blocks, 6 single-point top blocks, 7 inner shrinkage grooves, 81 fixed resistance plates, 82 movable resistance plates, 9 pressure change layers, 101 wear plates and 102 graphite lubricating points.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a retraction type isolation compensation type gear pump based on a hydraulic system includes a gear pump body 1, an oil inlet and a liquid outlet are respectively drilled at the left and right ends of the gear pump body 1, two rotating shafts 3 are installed inside the gear pump body 1, gears 2 are installed at the outer ends of the rotating shafts 3, and the two gears 2 are meshed and connected.
Referring to fig. 3-4, a plurality of inner shrinkage grooves 7 are uniformly distributed on the surface of the rotating shaft 3, an inner shrinkage compensation block is arranged inside the inner shrinkage groove 7, the outer surface of the inner shrinkage compensation block is flush with the surface of the rotating shaft 3, the inner shrinkage compensation block comprises a fixed resistance plate 81 and a movable resistance plate 82, the fixed resistance plate 81 is fixedly connected with the inner bottom end of the rotating shaft 3, a compression layer 9 is fixedly connected between the fixed resistance plate 81 and the movable resistance plate 82, referring to fig. 8, when the gear 2 is stressed unevenly to cause certain inclination, the extrusion force between the inner wall on the left side of the gear 2 and the rotating shaft 3 is increased along the flow direction of hydraulic oil, at this time, through the arrangement of the inner shrinkage compensation block, referring to fig. 7, a reverse jacking force is generated on the jacking block 6 near the stress point where the extrusion force is increased, so as to realize stress transfer, the contact force between the surface of the rotating shaft 3 and the inner wall of the gear 2 is removed, and the process that the inner shrinkage compensation block is pressed, uneven atress on 2 inner walls of effective compensation gear and 3 surfaces of pivot, and then effective extension gear 2 and 3 damaged time of pivot, increase of service life.
The fixed resistance plate 81 and the movable resistance plate 82 are both made of neodymium iron boron magnets, and the magnetic poles at the ends of the fixed resistance plate 81 and the movable resistance plate 82, which are close to each other, are the same, so that a repulsive force exists between the fixed resistance plate 81 and the movable resistance plate 82, and the closer the two are, the larger the repulsive force is, the stronger the compensation effect on the displacement of the gear 2 is, when the gear 2 does not rotate, the gear 2 and the rotating shaft 3 are in a balanced position, and the extrusion force of each single-point top block 6 on the retraction compensation block is the same, when the gear pump is in use, the extrusion force of the single-point top block 6, which is deviated to a certain extent by the gear 2 and is close to the oil inlet, on the retraction compensation block is larger, when the fixed resistance plate 81 and the movable resistance plate 82 are close to each other, but the repulsive force between the fixed resistance plate 81 and the movable resistance plate 82, which are close to each other, becomes larger, a reverse thrust force can be generated on the single-, excessive stress from the oil inlet direction is effectively removed.
The pressure-variable layer 9 comprises an elastic sealing bag, so that the pressure-variable layer 9 can deform after being stressed, the pressure-variable layer 9 deforms more and more along with the increasing stress, the pressure-variable layer 9 extends towards two sides and continues to extend upwards until contacting the inner wall of the inner shrinkage groove 7, the movable resistance plate 82 is wrapped, the position of the pressure-variable layer is limited, the instability caused by the overlarge repulsion force between the movable resistance plate 82 and the fixed resistance plate 81 is effectively prevented, the movable resistance plate is difficult to move left and right in the inner shrinkage groove 7, the rotation stability of the gear 2 is further improved, the non-Newtonian fluid material is wrapped in the elastic sealing bag, a stress point can be quickly hardened after the non-Newtonian fluid material is stressed, the stress on one side of the oil inlet can be quickly removed, the compensation effect of the inner shrinkage compensation block on uneven stress is effectively improved, the elastic sealing bag is made of silicon rubber, the surface of which is coated with a LINE-X coating with the thickness of 0.8, silicon rubber chemical property is stable to have elasticity, when the internal shrinkage compensation piece atress for the pressure change layer 9 can adapt to its deformation requirement, LINE-X coating can increase the elasticity and the tensile strength of elasticity sealed bag simultaneously, makes pressure change layer 9 hardly age because of the atress in by compression process, improves its life, and the proportion between the vertical thickness of non-Newtonian fluid material intussuseption in elasticity sealed bag and pressure change layer 9 height is 1: 2.5, the non-Newtonian fluid material is filled too much, so that the deformation degree of the pressure change layer 9 is easily influenced, and the filling is too little, so that the effect of the non-Newtonian fluid material on the larger uneven force on the side of the oil inlet is not obvious.
Referring to fig. 6, the inner wall of the gear 2 is provided with a multi-point reinforcing layer, the multi-point reinforcing layer includes a reinforcing inner ring 4, a plurality of uniformly distributed single-point protrusions 5 and single-point protrusions 6, the single-point protrusions 5 and the single-point protrusions 6 are embedded inside the reinforcing inner ring 4, one end of the single-point protrusion 6 near the rotating shaft 3 penetrates through the reinforcing inner ring 4 and extends out of the reinforcing inner ring 4, the plurality of single-point protrusions 5 and the single-point protrusions 6 are distributed alternately, the reinforcing inner ring 4 and the single-point protrusions 5 are fixedly connected with the inner wall of the gear 2, one end of the single-point protrusion 6 is fixedly connected with two adjacent single-point protrusions 5, the single-point protrusions 5 are of an arc structure arched towards the rotating shaft 3, and the arched top points of the protrusions 5 are flush with the inner wall of the reinforcing inner ring 4, the strength of the inner wall of the gear 2 and the reinforcing inner ring 4 can be effectively increased by the reinforcing inner ring 4, so that when the hydraulic oil passes through the gear pump body 1 and the, the inner wall of the gear is hard to be abraded, and the problem that the gear 2 is unstable when rotating due to abrasion of the inner wall of the gear 2 is effectively solved.
Referring to fig. 7, the other end of the single-point top block 6 is matched with the inner shrinkage compensation block, the end faces of the fixed stop plate 81, the movable stop plate 82 and the single-point top block 6 close to the rotating shaft 3 are all arc structures of concentric circles, so that radians of the fixed stop plate 81, the movable stop plate 82 and the single-point top block 6 can be attached to each other, when the inner shrinkage compensation block is extruded and a repulsive force is generated between the fixed stop plate 81 and the movable stop plate 82, the stress on the surfaces of the single-point top block 6, the fixed stop plate 81 and the movable stop plate 82 can be more uniform, the movement track of the inner shrinkage compensation block is more stable in the process of inner shrinkage, the inner shrinkage compensation block is not easy to shake, the fixed stop plate 81 is fully paved on the inner bottom surface of the inner shrinkage groove 7, the repulsive force generated between the fixed stop plate 81 and the movable stop plate 82 is maximized, even if the movable stop plate 82 is displaced to a certain extent, effectively guarantee the compensation of internal contraction compensating block to inhomogeneous power, move the outer end of hinder board 82 and apart from internal contraction 7 inner walls 0.8-1cm of groove, the distance is too big, then move the hinder board 82 undersize, can make and decide the repulsion undersize between hinder board 81 and the movable hinder board 82, the distance undersize can influence the removal of moving the hinder board 82 in internal contraction 7, and apart from undersize compression layer 9 parcel can the undersize at the outer thickness of moving the hinder board 82, make its protection and limiting displacement to moving the hinder board 82 unobvious.
Please refer to fig. 5, the upper end of the dynamic resistance plate 82 is fixedly connected with a self-lubricating layer, the self-lubricating layer includes a wear plate 101 fixedly connected with the upper surface of the dynamic resistance plate 82, a plurality of evenly distributed graphite lubricating points 102 are embedded in the wear plate 101, the self-lubricating layer can effectively reduce the friction between the single-point top block 6 and the dynamic resistance plate 82, the wear between the two is effectively reduced, the service life is prolonged, the end surfaces of the wear plate 101 and the single-point top block 6 are made of silica aerogel materials, the silica aerogel is light, the hardness strength is high, the friction resistance is strong, so that the wear plate 101 and the single-point top block 6 are hardly worn due to uneven stress, and the service life is prolonged.
Through the arrangement of the multi-point reinforcing layer, the strength of the inner wall of the gear 2 can be effectively increased, so that when the hydraulic oil passes through the gear pump body 1 to cause uneven stress on the gear 2, the speed caused by abrasion on the surfaces of the gear 2 and the rotating shaft 3 is effectively reduced, meanwhile, through the arrangement of the inner shrinkage compensation block, when the gear 2 deviates to a certain extent, the extrusion force of the single-point top block 6 close to the oil inlet to the inner shrinkage compensation block is increased, so that the inner shrinkage compensation block generates an inner shrinkage phenomenon, namely the fixed baffle plate 81 is gradually close to the movable baffle plate 82, but along with the closer distance between the fixed baffle plate and the movable baffle plate 82, the repulsion force is also increased, reverse thrust is generated on the single-point top block 6, further, the gear 2 is effectively prevented from continuously generating displacement, a certain compensation effect is achieved on the uneven stress on the gear 2, the overlarge stress from the oil inlet direction is effectively removed, and in the process, due to the effects, even if the gear 2 deviates, the gear 2 and the rotating shaft 3 are difficult to contact with each other, so that the phenomena of abrasion and deformation caused by uneven stress between the gear 2 and the rotating shaft 3 are reduced, and the service lives of the gear 2 and the rotating shaft 3 are obviously prolonged.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a compensation formula gear pump is kept apart to type of contracting in based on hydraulic system, includes gear pump body (1), both ends are cut respectively and are had oil inlet and liquid outlet about gear pump body (1), gear pump body (1) internally mounted has two pivots (3), pivot (3) outer end is equipped with gear (2), two gear (2) meshing connection, its characterized in that: the surface of the rotating shaft (3) is provided with a plurality of uniformly distributed inner shrinkage grooves (7), inner shrinkage compensation blocks are arranged inside the inner shrinkage grooves (7), the outer surfaces of the inner shrinkage compensation blocks are flush with the surface of the rotating shaft (3), the inner wall of the gear (2) is provided with a multi-point reinforcing layer, the multi-point reinforcing layer comprises a reinforcing inner ring (4), a plurality of uniformly distributed single-point raised blocks (5) and single-point top blocks (6), the single-point raised blocks (5) and the single-point top blocks (6) are embedded inside the reinforcing inner ring (4), one end, close to the rotating shaft (3), of each single-point top block (6) penetrates through the reinforcing inner ring (4) and extends to the outside of the reinforcing inner ring (4), the single-point raised blocks (5) and the single-point top blocks (6) are distributed alternately, the reinforcing inner ring (4) and the single-point raised blocks (5) are fixedly connected with the inner wall of the gear (2), one end of each top block (6) is fixedly connected with two adjacent raised blocks (5), the other end of the single-point top block (6) is matched with the inward shrinkage compensation block.
2. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 1, wherein: the single-point protruding blocks (5) are of arc structures which are arched towards the rotating shaft (3), and the arched top points of the single-point protruding blocks (5) are flush with the inner wall of the reinforcing inner ring (4).
3. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 1, wherein: the inner shrinkage compensation block comprises a fixed resistance plate (81) and a movable resistance plate (82), the fixed resistance plate (81) is fixedly connected with the inner bottom end of the rotating shaft (3), and a pressure-changing layer (9) is fixedly connected between the fixed resistance plate (81) and the movable resistance plate (82).
4. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 3, wherein: the fixed resistance plate (81) and the movable resistance plate (82) are both made of neodymium iron boron magnets, and the magnetic poles of the ends, close to each other, of the fixed resistance plate (81) and the movable resistance plate (82) are the same.
5. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 3, wherein: the end surfaces of the fixed resistance plate (81), the movable resistance plate (82) and the single-point top block (6) close to the rotating shaft (3) are all arc-shaped structures of concentric circles.
6. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 3, wherein: move and hinder board (82) upper end fixedly connected with self-lubricating layer, self-lubricating layer include with move and hinder board (82) upper surface fixedly connected with wear-plate (101), wear-plate (101) embedded graphite lubrication point (102) that are equipped with a plurality of evenly distributed.
7. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 6, wherein: the end faces of the wear-resistant plate (101) and the single-point top block (6) are both made of silicon dioxide aerogel materials.
8. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 3, wherein: the inner bottom surface of the inner shrinkage groove (7) is fully paved by the fixed resistance plate (81), and the distance from the outer end of the movable resistance plate (82) to the inner wall of the inner shrinkage groove (7) is 0.8-1 cm.
9. The retracting type isolation compensation type gear pump based on the hydraulic system as claimed in claim 3, wherein: the pressure change layer (9) comprises an elastic sealing bag, and the interior of the elastic sealing bag is wrapped with a non-Newtonian fluid material.
10. The retracting type isolation compensating gear pump based on hydraulic system as claimed in claim 9, characterized in that: the elastic sealing bag is made of silicon rubber coated with a LINE-X coating with the thickness of 0.5-1mm on the surface, and the proportion of the vertical thickness of the non-Newtonian fluid material filled in the elastic sealing bag to the height of the pressure variable layer (9) is 1: 2-3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097706.3A CN110761998B (en) | 2019-11-12 | 2019-11-12 | Internal shrinkage type isolation compensation type gear pump based on hydraulic system |
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| CN201911097706.3A CN110761998B (en) | 2019-11-12 | 2019-11-12 | Internal shrinkage type isolation compensation type gear pump based on hydraulic system |
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| CN110761998B CN110761998B (en) | 2022-11-11 |
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| JP2000009053A (en) * | 1998-06-29 | 2000-01-11 | Japan Society For The Promotion Of Machine Industry | Gear pump |
| CN101655087A (en) * | 2009-08-21 | 2010-02-24 | 重庆大学 | Gear oil pump with low noise |
| CN203476697U (en) * | 2013-08-06 | 2014-03-12 | 枞阳县高瑶机械设备有限公司 | Improved gear pump |
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| CN110761998B (en) | 2022-11-11 |
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