CN107685424B - Plastic reduction box of waterwheel aerator and waterwheel aerator - Google Patents
Plastic reduction box of waterwheel aerator and waterwheel aerator Download PDFInfo
- Publication number
- CN107685424B CN107685424B CN201610633655.1A CN201610633655A CN107685424B CN 107685424 B CN107685424 B CN 107685424B CN 201610633655 A CN201610633655 A CN 201610633655A CN 107685424 B CN107685424 B CN 107685424B
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- reduction gearbox
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- plastic reduction
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- 239000004033 plastic Substances 0.000 title claims abstract description 141
- 229920003023 plastic Polymers 0.000 title claims abstract description 141
- 238000005276 aerator Methods 0.000 title claims abstract description 36
- 238000001746 injection moulding Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 241000192710 Microcystis aeruginosa Species 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 241000221535 Pucciniales Species 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 20
- 238000005520 cutting process Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a method for manufacturing a plastic reduction box shell and a plastic reduction box of a waterwheel aerator, which reduce the machining process, and the plastic reduction box shell and the existing cast iron reduction box shell can be set to be basically the same in assembly size, thereby not only reducing the cost, but also ensuring that the reduction box shell never rusts.
Description
Technical Field
The invention belongs to aquaculture equipment, and particularly relates to a manufacturing method and a die of a plastic reduction box shell, a plastic reduction box of a waterwheel aerator, and the waterwheel aerator with the plastic reduction box.
Background
The reduction box shell of a common waterwheel aerator is made of aluminum or cast iron, and is rusted when being used in seawater, but the reduction box cannot be rusted when being changed into plastic, but because the reduction box has a structure that an inner cavity is larger than an opening, the reduction box can not be demolded by a common method during injection molding, for example, the reduction box shell is divided into two parts, and a layer of plastic is coated outside the pressure casting formed shell to prevent rusting; not only the process is complicated, but also the joint of the two half shells may have the risk of oil leakage.
Disclosure of Invention
The invention aims to provide a method and a die for manufacturing a plastic reduction box shell, a plastic reduction box of a waterwheel aerator and the waterwheel aerator.
The purpose of the invention is realized as follows:
a plastic reduction gearbox of a waterwheel aerator mainly comprises a plastic reduction gearbox shell and a reduction gear, and is characterized in that a motor is basically and vertically fixed on the plastic reduction gearbox, a motor shaft drives a small spiral bevel gear, the small spiral bevel gear drives a large spiral bevel gear, the large spiral bevel gear is arranged on a shaft of a small cylindrical gear, the small cylindrical gear drives a large cylindrical gear, and the large cylindrical gear is arranged on an output shaft; all gears and bearings are arranged in the plastic reduction gearbox shell, and two ends of the output shaft basically extend out horizontally; the plastic reduction gearbox shell is formed by injection molding, the injection mold mainly comprises a movable mold, a fixed mold, a mold core and at least two cavity blocks, the mold core is divided into a main mold core and an auxiliary mold core, the auxiliary mold core is arranged on the main mold core, the main mold core is covered and lifted and provided with a guide rail, the auxiliary mold core is arranged on the guide rail, and the main mold core is arranged on the movable mold; the mold opens the cavity after injecting plastic into the injection molding equipment, the secondary core is ejected out together in the injection molding plastic reduction box shell, and the secondary core is taken out from a vacant site left after the workpiece is separated from the main core.
Two bearing chambers are respectively arranged on two sides of the plastic reduction gearbox, and each bearing chamber is embedded with an insert, or the two inserts are integrally embedded in the bearing positions on two sides of the plastic reduction gearbox shell, or screw holes for fixing a bearing cover are also arranged on the inserts; and sealing parts are arranged on the outer sides of the bearing positions on the two sides of the output shaft.
The plastic reduction gearbox is provided with a connecting port which can be used for placing a gear and is matched with the motor, the connecting port is provided with a bolt hole which is opposite to a flange of the motor, and the motor and the plastic reduction gearbox are fastened, sealed and butted by bolts; the installation positions of the bottom of the plastic reduction box shell are the same plane, and the middle part of the bottom of the plastic reduction box shell is hollowed upwards; the plastic reduction box is provided with an oil filling port formed by an upper mold core, a screw plug is arranged in the oil filling port, a cover is arranged outside the oil filling port, or the oil filling port is only provided with the screw plug or only provided with the cover.
The waterwheel type aerator with the plastic reduction gearbox mainly comprises the plastic reduction gearbox, a pontoon and an impeller, and is characterized in that the plastic reduction gearbox is arranged on the pontoon, or the plastic reduction gearbox is connected with a base and arranged on the pontoon, and an output shaft drives the impeller to rotate and oxygenate the impeller and lift water bloom to cool a waterproof motor and the plastic reduction gearbox; or the motor is an air cooling motor, a waterproof cover is additionally arranged outside the air cooling motor to cover the air cooling motor and the reduction gearbox together, or only the combination part of the air cooling motor, the air cooling motor and the plastic reduction gearbox is covered, so that the lifted water is sprayed on the plastic reduction gearbox, and the cooling effect of the plastic reduction gearbox is improved.
The waterwheel type aerator is provided with the plastic reduction gearbox, the plastic reduction gearbox is arranged on the plastic connecting seat and fastened by bolts, the connecting seat wraps and lifts the supporting seat, the bracket and the bearing seat, the supporting seat is connected with the bearing seats at two ends by the bracket, and a water lubrication bearing is arranged in the bearing seat; the supporting seat is provided with a through hole connected with the reduction gearbox, the support is provided with a through hole connected with the floating body downwards, and the whole connecting seat is formed by plastic through one-time injection molding.
The injection mold of the plastic reduction gearbox shell of the waterwheel aerator is mainly composed of a core and at least two cavity blocks, and is characterized in that the core is divided into a main core and an auxiliary core, the auxiliary core is arranged on the main core, the main core is provided with a guide rail, and the auxiliary core is arranged on the guide rail; the mold is formed by injecting plastic into the injection molding equipment, then the cavity is opened, the workpiece is separated from the main core, and then the auxiliary core is taken out from a vacant site left after the workpiece is separated from the main core.
The injection mold of the plastic reduction gearbox shell of the waterwheel aerator is characterized by comprising a main mold core, a secondary mold core and a mold, wherein the main mold core is provided with a guide rail, the secondary mold core is arranged on the guide rail, and the secondary mold core is narrower than the main mold core.
The injection mold of the plastic reduction gearbox shell of the waterwheel aerator is characterized by comprising an upper mold core which is connected with an oil filling port formed by a workpiece.
The injection mold of the plastic reduction gearbox shell of the waterwheel aerator is characterized by comprising a left cavity block, a right cavity block, a movable mold and a fixed mold, wherein the left cavity block and the right cavity block are respectively provided with two side cores for generating bearing chambers, or the side cores are provided with inserts; the insert is divided into a single insert or a connected insert, a bearing chamber is arranged on the single insert, and the single insert is independently placed on each side mold core, so that the single insert is fixed by plastic after injection molding; or the insert is a connected insert, two bearing chambers are arranged on the connected insert, and the connected insert is positioned on two side cores of the left cavity block and the right cavity block by the two bearing chambers, so that the connected insert is fixed by plastic after injection molding; the movable mold is provided with a main mold core, and the fixed mold is provided with a mold core for generating a hollow part.
Compared with the prior art, the invention has the outstanding advantages that:
the plastic reduction box shell of the waterwheel aerator is integrally formed by the manufacturing method and the die provided by the invention, so that the cutting process can be reduced or no cutting process is carried out, the machining process is reduced, the plastic reduction box shell and the existing cast iron reduction box shell can be set to be basically the same in assembly size, the cost is reduced, and the reduction box shell is never rusted.
Drawings
FIG. 1 is a perspective view of the mold structure of the present invention; (not shown stationary mold)
FIG. 2 is a perspective view of another aspect of the present invention; (not shown stationary mold)
FIG. 3 is a schematic view of the moving mold, main core and upper core of the present invention;
FIG. 4 is a schematic view of the mold opening normality of the moving mold and the fixed mold of the invention; (left cavity block and right cavity block not shown)
FIG. 5 is a perspective view of the plastic reduction gearbox of the present invention with a small spiral bevel gear fixed on the shaft of the motor; (partial cut-open of the shell)
FIG. 6 is a cross-sectional schematic view of the plastic reduction gearbox of the present invention;
FIG. 7 is a perspective view of the plastic reduction box housing of the present invention;
FIG. 8 is a schematic perspective view of the plastic reduction housing of the present invention in another orientation;
FIG. 9 is a schematic perspective view of the filler neck of the plastic reduction gearbox of the present invention with a lid;
FIG. 10 is a perspective view of the conjoined inserts of the present invention;
FIG. 11 is a schematic perspective view of a stainless steel water-cooled motor of the present invention;
FIG. 12 is a schematic perspective view of an aerator with a plastic reduction gearbox according to the present invention;
FIG. 13 is a schematic perspective view of the aerator of the present invention with a plastic reduction gearbox directly connected to a pontoon;
FIG. 14 is a schematic perspective view of the aerator with a plastic reduction gearbox and a connecting base of the present invention; (wind cooling motor)
FIG. 15 is a perspective view of the connecting base of the present invention;
FIG. 16 is a perspective view of the plastic reduction gearbox with bearings outside the small spiral bevel gear of the present invention. (partial cut-open of the shell)
In the figure: 1, moving a mold; 2, fixing the mold; 3-main core; 4-secondary core; 5-a cavity block; 6-side mold core; 7, a guide rail; 8, feeding a mold core; 9-lower core; 10-a mold core at the hollowed-out part; 11-mechanical seals; 12-plastic reduction box shell; 13-integral inserts; 14-motor shaft; 15-small spiral bevel gear; 16-big spiral bevel gear; 17-small cylindrical gear; 18-large cylindrical gear; 19-an output shaft; 20, a bearing; 21-a bearing; 22-a fixed seat; 23-a bearing cap; 24-connecting port; 25-a flange; 26-bolt holes; 27-a bearing chamber; 28-screw holes; 29-oil filler; 30-oil discharge; 31-mounting position; 32-mounting holes; 33, hollowing out; 34-a stainless steel shell water-cooling motor; 35-plastic reduction box; 36-a base; 37-coupling; 38-impeller; 39-a transmission shaft; 40, bearing seats; 41-a pontoon; 42-a bracket; 43-a protective cover; 44-a plug screw; 45-a lid; 46-a support base; 47-a scaffold; 48-air outlet holes; 49-waterproof cover; 50-bearing 51-internal spline.
Detailed Description
The invention will be further described in the following detailed description of embodiments thereof with reference to the accompanying drawings, in which reference is made to figures 1 to 16:
a method for manufacturing a plastic reduction box shell of a waterwheel aerator mainly comprises injection molding equipment and a mold, wherein the mold mainly comprises a mold core and at least two openable cavity blocks 5. The core is divided into a main core 3 and a secondary core 4, and the secondary core 4 is arranged on the main core 3. After the mold is injected with plastic on injection molding equipment for molding, the mold is opened to eject the workpiece to be separated from the main core 3, the secondary core 4 is left in the workpiece, namely the secondary core 4 is left in a plastic reduction box shell 12 for injection molding, the secondary core 4 is taken out from a vacant space left after being separated from the main core 3, the method for taking out the secondary core 4 comprises manual taking out or mechanical hand taking out, and the secondary core 4 can be provided with a plurality of pieces for alternate use.
An injection mold of a plastic reduction gearbox shell of a waterwheel aerator mainly comprises more than two spliced cavity blocks 5 and a mold core, wherein the mold core is divided into a main mold core 3 and an auxiliary mold core 4, and the auxiliary mold core 4 is arranged on the main mold core 3; after the mold injects plastics into the injection molding equipment, the mold is opened to eject the workpiece to be separated from the main core 3, the auxiliary core 4 is left in the injection molding plastic reduction box shell 12, and the auxiliary core 4 can be taken out after moving from a vacant position left after the main core 3 is drawn out. The secondary core 4 may be provided as a single piece narrower than the primary core 3, or it may be formed by combining a plurality of pieces. The main core 3 can be provided with a guide rail 7, and the auxiliary core is arranged on the guide rail 7 and combined with the cavity block to form a mold. The upper part of the secondary core 4 can be provided with an abutting position with the upper core 8, the lower part of the secondary core 4 can be provided with an abutting position with the lower core 9, and the upper core 8 and the lower core 9 not only can accurately position the secondary core 4, but also can enable a workpiece to form an oil filling opening 29 and an oil discharging opening 30. The guide 7 may be advantageously arranged so as to be inclined with respect to the extraction direction, to move the secondary core 4 during the extraction of the primary core 3, to facilitate the extraction of the secondary core 4. The process of extracting the main core is the process of ejecting the work piece off the main core 3. The cavity block 5 comprises a left cavity block and a right cavity block, the left cavity block and the right cavity block are respectively provided with a side core 6 for generating a bearing chamber, the side core 6 can be provided with an insert for enabling plastic to wrap the insert, and the inside of the insert is provided with a bearing chamber 27. The movable mold 1 can be provided with a main mold core 3 and an upper mold core 8 for generating an oil filling port downwards, the fixed mold 2 can be provided with a lower mold core 9 for generating an oil discharging port and a mold core 10 for generating a hollow part of a workpiece upwards, and the hollow part is used for enabling the wall thickness of the workpiece to be uniform. The mounting position 31 and the mounting hole 32 of the plastic reduction box shell can be formed by one-time injection molding. The inserts are arranged for enhancing the strength of a bearing installation position, namely a bearing chamber, the inserts can be made of metal to enable the strength of the bearing chamber to be higher, two adjacent inserts can be arranged into the connected insert 13, and screw holes for fixing a bearing cover can also be arranged on the connected insert 13. The upper mold core 8 and the lower mold core 9 refer to the upper or lower direction of the formed workpiece assembled to the aerator, and the aerator is not limited to the upper, lower, left or right direction of the mold during the injection molding process. The structures of the movable mold, the fixed mold and the left cavity block and the right cavity block can be changed according to different injection molding equipment and injection molding processes. The plastic comprises thermoplastic engineering plastic or thermosetting plastic.
The utility model provides a plastics reducing gear box of waterwheel oxygen-increasing machine, mainly includes plastics reducing gear box shell 12, reduction gear, the basic vertical fixation of motor on plastics reducing gear box shell 12, 14 structures that drive little spiral bevel gear of motor shaft include: the small spiral bevel gear 15 is directly fixed on the motor shaft 14, or the inner hole of the small spiral bevel gear 15 is provided with an internal spline, the excircle is provided with a bearing, the bearing 50 is arranged in a bearing chamber, and the motor shaft 14 is provided with an external spline which is matched with the internal spline 51 of the small spiral bevel gear. The small spiral bevel gear 15 drives the large spiral bevel gear 16, the large spiral bevel gear 16 is arranged on the shaft of the small cylindrical gear 17, the small cylindrical gear 17 drives the large cylindrical gear 18, the large cylindrical gear 18 is arranged on the output shaft 19, all gears including bearings are arranged in the plastic reduction box shell 12, and two ends of the output shaft 19 basically extend horizontally. The plastic speed reducing box is characterized in that the inner cavity of the plastic speed reducing box shell is larger than the opening part, the plastic speed reducing box shell is formed by injection molding, an injection mold mainly comprises a mold core and at least two mold cavity blocks, the mold core is divided into a main mold core 3 and an auxiliary mold core 4, and the auxiliary mold core 4 is arranged on the main mold core 3; the mould opens the die cavity after injecting plastics on the injection moulding equipment, the secondary core 4 is in the plastic reduction gearbox shell 12 that injection moulding takes shape, the secondary core 4 is ejected together in the plastic reduction gearbox that injection moulding takes shape, the secondary core is taken out from the vacancy that leaves after the work piece breaks away from the main core.
A plastic reduction box of a waterwheel aerator is provided with an upward connecting port 24 which can be used for placing a gear and is matched with a motor flange, a flange 25 is arranged on the connecting port 24, the flange 25 is provided with a bolt hole 26 opposite to the motor flange, the connecting port 24 can be provided with a metal insert or a backing plate for reinforcement, a motor and the plastic reduction box 35 are fastened and butted by bolts, and a sealing ring can be arranged at the butted position. The plastic reduction gearbox 35 and the motor flange are connected, then the plastic reduction gearbox becomes a closed shell, and gears and lubricating oil or lubricating ester can be arranged in the shell. The housing may be provided with a filler opening 29 and a drain opening 30. The large cylindrical gear 18 is arranged in a narrow cavity of the plastic reduction box 12 at a position far from the connecting opening 24, and the narrow cavity is the cavity generated by the secondary core 4. The large spiral bevel gear 16 is mounted on the shaft of the small cylindrical gear 17, and the small cylindrical gear 17 is disposed below the connection port 24. The bottom of the plastic reduction box shell 12 is provided with a mounting position 31 of the plastic reduction box shell, the lower ends of the mounting position 31 and the mounting hole 32 can be arranged on the same plane, the mounting position 31, the mounting hole 32 and the plastic reduction box shell 12 are formed in an injection molding mode, the bottom of the plastic reduction box shell is hollowed out 33 upwards, and the wall thickness of the plastic reduction box shell is uniform. Two bearing chambers 27 are respectively arranged on two sides, inserts are respectively embedded in the two bearing chambers 27 or the two adjacent inserts are arranged to be integrally embedded in the bearing positions on two sides of the plastic reduction box shell 12, and further screw holes for fixing bearing covers are also arranged on the connected inserts 13. And framework oil seals or mechanical sealing parts 11 are arranged at the bearing positions on the two sides of the output shaft 19. The fixing seat 22 of the framework oil seal or the mechanical seal 11 can be integrated with the bearing cover 23, preferably, the fixing seat 22 of the mechanical seal is formed by injection molding, and the outer part of the fixing seat 22 is provided with a protective cover 43 formed by stretching a stainless steel plate. The plastic reduction box shell 12 and each matching position can leave less cutting allowance, and the plastic reduction box shell is subjected to cutting processing after injection molding, or is directly assembled after injection molding without leaving cutting allowance.
The plastic reduction gearbox can be provided with an oil filling port 29 formed by the upper mold core 8, a screw plug 44 is arranged in the oil filling port 29, and the screw plug 44 can be provided with an air outlet small hole 48; a cover 45 can be additionally arranged outside the oil filling port to prevent water from being sprayed into the oil filling port from the small air outlet hole 48, the cover 45 is fixed on the plastic reduction box shell 12 through screws, or the cover 45 is provided with internal threads matched with external threads on the outer side of the oil filling port 30, so that the water cannot enter the reduction box. An oil discharge port 30 can be arranged at the bottom of the plastic reduction gearbox.
The waterwheel type aerator with the plastic reduction gearbox mainly comprises the motor, the plastic reduction gearbox 35, a pontoon 41 and an impeller 38, wherein the motor is a stainless steel shell water-cooling motor 34, the plastic reduction gearbox 35 is arranged on the pontoon 41, or the plastic reduction gearbox 35 is connected with a base 36 and arranged on the pontoon 41, an output shaft 19 drives the impeller 38, and the impeller rotates to increase oxygen and lifts water flowers to cool the stainless steel shell water-cooling motor 34 and the plastic reduction gearbox 35.
If the motor is a non-waterproof motor, the waterproof cover 49 can be additionally arranged to only cover the motor and also can only cover the motor and the joint of the motor and the plastic reduction gearbox 35, so that the sealing requirement of the joint of the motor and the plastic reduction gearbox 35 can be reduced, water splashed by the rotation of the impeller 38 is sprayed on the plastic reduction gearbox 35, and the cooling effect of the plastic reduction gearbox is enhanced.
The plastic reduction box 35 is arranged on a plastic connecting seat and fastened by bolts, and the connecting seat comprises: the bearing seat 46 is connected with the bearing seats 40 at two ends through the support 47, and a water lubrication bearing is arranged in the bearing seat 40; the supporting seat 46 is provided with a through hole connected with the plastic reduction box 35, the bracket 47 is provided with a through hole connected with the floating body downwards, and the whole connecting seat is formed by plastic through one-time injection molding.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A plastic reduction gearbox of a waterwheel aerator mainly comprises a plastic reduction gearbox shell and a reduction gear, and is characterized in that a motor is basically and vertically fixed on the plastic reduction gearbox, a motor shaft drives a small spiral bevel gear, the small spiral bevel gear drives a large spiral bevel gear, the large spiral bevel gear is arranged on a shaft of a small cylindrical gear, the small cylindrical gear drives a large cylindrical gear, and the large cylindrical gear is arranged on an output shaft; all gears and bearings are arranged in the plastic reduction gearbox shell, and two ends of the output shaft basically extend out horizontally; the plastic reduction gearbox shell is formed by injection molding, the injection mold mainly comprises a movable mold, a fixed mold, a mold core and at least two mold cavity blocks, the mold core is divided into a main mold core and an auxiliary mold core, the auxiliary mold core is arranged on the main mold core and comprises a guide rail arranged on the main mold core, the auxiliary mold core is arranged on the guide rail, and the main mold core is arranged on the movable mold; opening a cavity after plastic is injected into the mold on injection molding equipment, ejecting an auxiliary mold core together with the inside of a plastic reduction gearbox shell formed by injection molding, and taking out the auxiliary mold core from a vacant site left after a workpiece is separated from a main mold core; two bearing chambers are respectively arranged on two sides of the plastic reduction gearbox, and inserts are respectively embedded in the two bearing chambers, or the two inserts are integrally embedded in the bearing positions on two sides of the plastic reduction gearbox shell.
2. The plastic reduction box of the water mill aerator as claimed in claim 1, wherein the outer sides of the bearing positions on both sides of the output shaft are provided with sealing elements, and the screw holes for fixing the bearing cover are also arranged on the inserts.
3. The plastic reduction gearbox of the water mill aerator as claimed in claim 1 or 2, wherein the plastic reduction gearbox is provided with a connecting port which can be used for placing a gear and is matched with a motor, the connecting port is provided with a bolt hole opposite to a flange of the motor, and the motor and the plastic reduction gearbox are fastened, sealed and butted by bolts; the installation positions of the bottom of the plastic reduction box shell are the same plane, and the middle part of the bottom of the plastic reduction box shell is hollowed upwards; the plastic reduction box is provided with an oil filling port formed by an upper mold core, a screw plug is arranged in the oil filling port, a cover is arranged outside the oil filling port, or the oil filling port is only provided with the screw plug or only provided with the cover.
4. The waterwheel type aerator with the plastic reduction gearbox as claimed in claim 1 or 2, which mainly comprises the plastic reduction gearbox, a pontoon and an impeller, and is characterized in that the plastic reduction gearbox is arranged on the pontoon, or the plastic reduction gearbox is connected with a base and arranged on the pontoon, and an output shaft drives the impeller to rotate and oxygenate the impeller and lift water bloom to cool a waterproof motor and the plastic reduction gearbox; or the motor is an air cooling motor, a waterproof cover is additionally arranged outside the air cooling motor to cover the air cooling motor and the reduction gearbox together, or only the combination part of the air cooling motor, the air cooling motor and the plastic reduction gearbox is covered, so that the lifted water is sprayed on the plastic reduction gearbox, and the cooling effect of the plastic reduction gearbox is improved.
5. The waterwheel type aerator with plastic reduction boxes according to claim 4, wherein the plastic reduction boxes are arranged on the plastic connecting seats and fastened by bolts, the connecting seats comprise a supporting seat, a bracket and a bearing seat, the supporting seat is connected with the bearing seats at two ends by the bracket, and water lubrication bearings are arranged in the bearing seats; the supporting seat is provided with a through hole connected with the reduction gearbox, the support is provided with a through hole connected with the floating body downwards, and the whole connecting seat is formed by plastic through one-time injection molding.
6. The plastic reduction gearbox of the waterwheel aerator according to claim 1, wherein the injection mold mainly comprises a core and at least two cavity blocks, the core is divided into a main core and an auxiliary core, the auxiliary core is arranged on the main core, the main core is provided with a guide rail, and the auxiliary core is arranged on the guide rail; the mold is formed by injecting plastic into the injection molding equipment, then the cavity is opened, the workpiece is separated from the main core, and then the auxiliary core is taken out from a vacant site left after the workpiece is separated from the main core.
7. The plastic reduction box of the sprinkler aerator as claimed in claim 6, wherein the main core is provided with a guide rail, and the auxiliary core is installed on the guide rail, and the auxiliary core is narrower than the main core.
8. The plastic reduction box of the sprinkler aerator according to claim 6, characterized in that the upper part of the secondary core is abutted with an upper core which enables the workpiece to form an oil filling port.
9. The plastic reduction gearbox of the waterwheel aerator according to claim 6, wherein the cavity blocks comprise a left cavity block, a right cavity block, a movable die and a fixed die, the left cavity block and the right cavity block are respectively provided with two side cores for generating bearing chambers, or the side cores are provided with inserts; the insert is divided into a single insert or a connected insert, a bearing chamber is arranged on the single insert, and the single insert is independently placed on each side mold core, so that the single insert is fixed by plastic after injection molding; or the insert is a connected insert, two bearing chambers are arranged on the connected insert, and the connected insert is positioned on two side cores of the left cavity block and the right cavity block by the two bearing chambers, so that the connected insert is fixed by plastic after injection molding; the movable mold is provided with a main mold core, and the fixed mold is provided with a mold core for generating a hollow part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610633655.1A CN107685424B (en) | 2016-08-05 | 2016-08-05 | Plastic reduction box of waterwheel aerator and waterwheel aerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610633655.1A CN107685424B (en) | 2016-08-05 | 2016-08-05 | Plastic reduction box of waterwheel aerator and waterwheel aerator |
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| CN107685424A CN107685424A (en) | 2018-02-13 |
| CN107685424B true CN107685424B (en) | 2020-07-17 |
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| CN108679201A (en) * | 2018-06-01 | 2018-10-19 | 宁波爱柯迪精密部件有限公司 | A kind of aluminium die cast steering reduction box casing and its production line |
| CN111345262B (en) * | 2018-12-20 | 2023-03-24 | 浙江富地机械有限公司 | Waterwheel type aerator with water-cooled motor |
| CN111927941B (en) * | 2020-09-03 | 2023-12-19 | 钟丹 | Plastic speed reducer, aerator and method for preparing box body of speed reducer |
| CN111998058B (en) * | 2020-09-03 | 2023-12-19 | 钟丹 | Plastic speed reducer, preparation method and mold for molding plastic speed reducer box |
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| CN201747902U (en) * | 2009-10-22 | 2011-02-16 | 吴为国 | Combined reduction gearbox of waterwheel aerator |
| CN102239820B (en) * | 2010-05-11 | 2013-07-10 | 吴为国 | Injection molding impeller and mold of automatic aerator |
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