CN109253108A - A kind of the immersible pump double shrouded wheel and its production method of injection molding - Google Patents
A kind of the immersible pump double shrouded wheel and its production method of injection molding Download PDFInfo
- Publication number
- CN109253108A CN109253108A CN201811350051.1A CN201811350051A CN109253108A CN 109253108 A CN109253108 A CN 109253108A CN 201811350051 A CN201811350051 A CN 201811350051A CN 109253108 A CN109253108 A CN 109253108A
- Authority
- CN
- China
- Prior art keywords
- shroud
- blade
- injection molding
- counterface
- immersible pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 claims abstract description 31
- 229920003023 plastic Polymers 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 16
- 238000005299 abrasion Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 13
- 229920006351 engineering plastic Polymers 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
- F04D29/2227—Construction and assembly for special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of immersible pump double shrouded wheels of injection molding, the immersible pump double shrouded wheel of the injection molding is fastened by the hub disk of injection molding and the shroud of injection molding, it is formed by connecting, the hub disk includes disk body, several blades for protruding from disc surfaces are equipped on disk body, there is the shroud counterface coincideing with shroud on blade, the connection plug for protruding from shroud counterface is equipped on the shroud counterface of blade, it is equipped with and connection plug number on shroud, position and the corresponding connection jack of shape, the packing groove that will connect jack encirclement is equipped with backwards to the surface of blade side in shroud, connection plastic body is filled in packing groove, the immersible pump double shrouded wheel non-welding structure of the injection molding, welding performance no requirement (NR) to the engineering plastics of production impeller, impeller intensity is high, shock resistance is good, long service life.
Description
Technical field
The present invention relates to a kind of submersible pump impeller and its production method, especially a kind of diving produced using Shooting Technique
Pump double shrouded wheel and its production method.
Background technique
Immersible pump double shrouded wheel in the prior art mostly uses cast iron to be made, this cast iron impeller due to own wt compared with
Greatly, biggish torque is needed when starting, can also consume certain electric energy when be easy to causeing motor overload, also, working normally, because
This, energy-saving effect is bad.In addition, this cast iron impeller mostly uses sand casting, there are machines to add dead angle for impeller internal, causes impeller
Inner surface finish is bad, influences the efficiency of impeller.In order to overcome this drawback of cast iron impeller, part water pump uses engineering
Impeller is made in plastics, and still, due to the special angle of blade in production process, will lead to can not after the molding of impeller integral molded plastic
Therefore draft can only produce the relatively simple plastic impeller of some structures, be not able to satisfy production high-efficiency submersible pump double shrouded wheel
It is required that limiting the production and application of plastic impeller.203906378 U of CN discloses a kind of blade wheel structure of pump, the leaf of the pump
Wheel construction has the front shroud of impeller of axial inlet including middle part and the back shroud of impeller for being connected with pump motor shaft,
Front shroud of impeller is mutually fastened with back shroud of impeller, is had between front shroud of impeller and back shroud of impeller and is connected to axial inlet
Radially outlet, back shroud of impeller are located at the blade on the side of front shroud of impeller with several radially uniform distributions, radially outlet
It for several and is located between two adjacent blades, has between the end face and front shroud of impeller of blade for by impeller front cover
The connection structure that plate and back shroud of impeller link together, the impeller use ultrasonic welding process by front shroud of impeller, rear cover
Plate and blade weld together composition impeller.But it is larger using the impeller internal stress that this ultrasonic welding process is produced,
It is easy to be broken in weld part when impeller generates vibration in use process.In addition, usually being wanted to increase the intensity of engineering plastics
Reinforcing glass fiber is added into PPS plastics, and will affect PPS plastics welding performance after glass fibre is added, impeller is caused to exist
Welding difficulty in manufacturing process, and be easier to be broken in weld part in use process.
Summary of the invention
Technical problems to be solved by the inivention are: overcoming drawbacks described above of the existing technology, provide a kind of injection molding
Immersible pump double shrouded wheel, the immersible pump double shrouded wheel non-welding structure of the injection molding, the weldering to the engineering plastics of production impeller
Performance no requirement (NR) is connect, impeller intensity is high, shock resistance is good, long service life.
The technical solution adopted for solving the technical problem: a kind of immersible pump double shrouded wheel of injection molding, by injection molding
Hub disk and the shroud of injection molding fasten, be formed by connecting, the hub disk includes disk body, is equipped on disk body and several protrudes from disk
The blade in body surface face has the shroud counterface coincideing with shroud on blade, is equipped on the shroud counterface of blade
The connection plug for protruding from shroud counterface is equipped with company corresponding with connection plug number, position and shape on shroud
Jointing holes are equipped with the packing groove that will connect jack encirclement, the company of being filled in packing groove in shroud backwards to the surface of blade side
Connect plastic body.
As an improvement of the present invention: the connection plug is the inverted wedge shape connection plug that end is wide, root is narrow.
As a further improvement of the present invention: across pitch is inserted at least provided with two connections on the shroud counterface of blade
Head.
As further improvement of the invention: the packing groove be along blades front disk counterface move towards setting, can
With the long and narrow packing groove for all surrounding the corresponding connection jack of same blade.
It is improved as another kind of the invention: blade positioning convex platform is equipped on the shroud counterface of blade, in shroud
The blade positioning groove matched with blade positioning convex platform is equipped with the connecting side of blade.
As another improvement of the invention: choma is equipped in centre bit of the shroud backwards to blade side, in the outer of choma
Circumference studs with abrasion-resistant metal ring, is equipped at least one of annular fixing groove in the inner peripheral surface of abrasion-resistant metal ring.
Another technical problem to be solved by the invention is: providing a kind of producer of the immersible pump double shrouded wheel of injection molding
Method can produce the immersible pump double shrouded wheel of non-welding structure using this method, produce immersible pump enclosed leaf using this method
Wheel is not limited by material welding performance, and the immersible pump double shrouded wheel intensity produced is high, and internal stress is small.
The technical solution adopted for solving the technical problem: a kind of production method of the immersible pump double shrouded wheel of injection molding,
It comprises the following steps that:
Have vaned hub disk using Shooting Technique production, form the shroud counterface coincideing with shroud in the end of blade,
The connection plug for protruding from shroud counterface is formed on the shroud counterface of blade；
There is the shroud of connection jack using Shooting Technique production, jack will be connected by being formed in shroud backwards to the surface of blade side
The packing groove of encirclement；
It combines hub disk with shroud press fitting, makes connection plug insertion connection jack, and inject the plastics general of fusing into packing groove
Packing groove is filled and led up, and connection plastic body is formed after the plastics in packing groove are cooling；
It polishes impeller surface burr, obtains the immersible pump double shrouded wheel finished product of injection molding.
The utility model has the advantages that the immersible pump double shrouded wheel of injection molding of the invention, due to using the double shrouded wheel by infusing
The shroud for moulding molding hub disk and injection molding fastens, is formed by connecting, and the hub disk includes disk body, is equipped on disk body several prominent
For the blade of disc surfaces, there is the shroud counterface coincideing with shroud on blade, in the shroud counterface of blade
It is equipped with the connection plug for protruding from shroud counterface, is equipped on shroud opposite with connection plug number, position and shape
The connection jack answered is equipped with the packing groove that will connect jack encirclement backwards to the surface of blade side in shroud, fills in packing groove
It is filled with the technical solution of connection plastic body, blade and shroud are tensed and locked and connected into from the back side of shroud with connection plastic body
Integral structure, thus make shroud, hub disk be assembled into welding injection molding immersible pump double shrouded wheel, therefore, the present invention
Injection molding immersible pump double shrouded wheel with connection this structure of plastic body instead of ultrasonic bonding work in the prior art
Skill, the welding performance no requirement (NR) to the engineering plastics of production impeller, thus using adding the PPS material of glass that can also produce water pump
Impeller, the impeller internal stress produced is small, and intensity is high, and shock resistance is good, long service life.Due to using the connection plug
For the technical characteristic for the inverted wedge shape connection plug that end is wide, root is narrow, keep connection plug and the connection for connecting plastic body stronger,
Blade can be effectively prevented to fall off with shroud, so that the immersible pump double shrouded wheel of injection molding of the invention is worked more stable,
Reliability is higher.It is special at least provided with the technology of two connection plugs due to using the across pitch on the shroud counterface of blade
Sign, making the stress of blade, more evenly bearing capacity is stronger.Due to using the packing groove as along blades front disk counterface
The technical characteristic of long and narrow packing groove that moves towards setting, can all surround the corresponding connection jack of same blade, not only make to
Injected plastic is more convenient in packing groove, and multiple connection plugs are integral with connection plastic body connection, makes blade and shroud
Connection it is stronger.Blade positioning convex platform is equipped on the shroud counterface of blade due to using, in shroud and blade
Connecting side is equipped with the technical characteristic of the blade positioning groove matched with blade positioning convex platform, on the one hand makes blade in production process
Positioning with shroud is more convenient, more accurate, and load when blade working is on the other hand carried using positioning convex platform, can effectively be kept away
Exempt from connection plug to be broken, keeps the bearing capacity of the immersible pump double shrouded wheel of injection molding of the invention stronger.Due to using
It is equipped with choma in centre bit of the shroud backwards to blade side, studs with abrasion-resistant metal ring in the excircle of choma, in abrasion-resistant metal
The inner peripheral surface of ring is equipped with the technical characteristic of at least one annular fixing groove, makes the antiwear characteristics characteristic for improving impeller, makes leaf
The scope of application of wheel is wider.It is first molded shroud, hub disk due to using, then injects into packing groove the plastics of fusing for packing groove
The technical characteristic filled and led up replaces ultrasonic welding process in the prior art by last time injection molding, realizes water pump modeling
Expect the welding production of impeller, and can satisfy the immersible pump double shrouded wheel production requirement of complex angles.
Detailed description of the invention
The immersible pump double shrouded wheel of injection molding of the invention is described in further detail with reference to the accompanying drawing.
Fig. 1 is the immersible pump double shrouded wheel structural schematic diagram of injection molding of the invention.
Specific embodiment
As shown in Figure 1, the immersible pump double shrouded wheel of injection molding of the invention is by the hub disk 4 of injection molding and injection molding
Shroud 3 fasten, be formed by connecting.It is equipped with choma 1 in centre bit of the shroud backwards to blade side, studs with gold in the excircle of choma
Belong to wear ring 6, is equipped at least one of annular fixing groove in the inner peripheral surface of abrasion-resistant metal ring.The hub disk includes disk body 13,
Disk body is equipped with several blades 5 for protruding from disc surfaces, has the shroud counterface 7 coincideing with shroud on blade,
The shroud counterface of blade, which is equipped with, protrudes from the connection plug 10 of shroud counterface, the connection plug be end it is wide,
The narrow inverted wedge shape connection plug in root is equipped with connection jack corresponding with connection plug number, position and shape on shroud
12, the packing groove 9 that will connect jack encirclement is equipped with backwards to the surface of blade side in shroud, connection modeling is filled in packing groove
Material 2, connection plastic body fuse into one with connection plug, shroud.
Preferably, across pitch at least provided with two connection plugs, the packing groove is on the shroud counterface of blade
Along the long and narrow filler that moves towards setting, can all surround the corresponding connection jack of same blade of blades front disk counterface
Slot is equipped with blade positioning convex platform 8 on the shroud counterface of blade, is equipped in the connecting side of shroud and blade and positions with blade
The blade positioning groove 11 that boss matches.
The production method of the immersible pump double shrouded wheel of injection molding of the invention, comprises the following steps that:
Have vaned hub disk using Shooting Technique production, form the shroud counterface coincideing with shroud in the end of blade,
The connection plug for protruding from shroud counterface is formed on the shroud counterface of blade；
There is the shroud of connection jack using Shooting Technique production, jack will be connected by being formed in shroud backwards to the surface of blade side
The packing groove of encirclement；
It combines hub disk with shroud press fitting, hub disk and shroud is made to coincide, make connection plug insertion connection jack, connection plug end face
Not higher than shroud backwards to the surface of blade side, and the plastics for injecting into packing groove fusing fill and lead up packing groove, it is cooling after shape
At connection plastic body；
It polishes impeller surface burr, obtains the immersible pump double shrouded wheel finished product of injection molding.
Claims (7)
1. a kind of immersible pump double shrouded wheel of injection molding is fastened, connection by the hub disk of injection molding and the shroud of injection molding
It forms, the hub disk includes disk body, and several blades for protruding from disc surfaces are equipped on disk body, are had on blade and shroud
Identical shroud counterface, it is characterized in that: being equipped with the company for protruding from shroud counterface on the shroud counterface of blade
Plug is equipped with connection jack corresponding with connection plug number, position and shape, in shroud backwards to blade one on shroud
The surface of side is equipped with the packing groove that will connect jack encirclement, and connection plastic body is filled in packing groove.
2. the immersible pump double shrouded wheel of injection molding according to claim 1, it is characterized in that: the connection plug is end
Inverted wedge shape connection plug wide, root is narrow.
3. the immersible pump double shrouded wheel of injection molding according to claim 2, it is characterized in that: in the shroud abutting end of blade
Across pitch is at least provided with two connection plugs on face.
4. the immersible pump double shrouded wheel of injection molding according to claim 3, it is characterized in that: the packing groove is along blade
The long and narrow packing groove that moves towards setting, can all surround the corresponding connection jack of same blade of shroud counterface.
5. the immersible pump double shrouded wheel of injection molding according to any one of claims 1 to 4, it is characterized in that: in blade
Shroud counterface is equipped with blade positioning convex platform, is equipped in shroud and the connecting side of blade and matches with blade positioning convex platform
Blade positioning groove.
6. the immersible pump double shrouded wheel of injection molding according to claim 5, it is characterized in that: in shroud backwards to blade side
Centre bit be equipped with choma, stud with abrasion-resistant metal ring in the excircle of choma, abrasion-resistant metal ring inner peripheral surface be equipped at least
One of annular fixing groove.
7. the production method of the immersible pump double shrouded wheel of injection molding described in claim 1, it is characterized in that: including following technique
Step:
Have vaned hub disk using Shooting Technique production, form the shroud counterface coincideing with shroud in the end of blade,
The connection plug for protruding from shroud counterface is formed on the shroud counterface of blade；
There is the shroud of connection jack using Shooting Technique production, jack will be connected by being formed in shroud backwards to the surface of blade side
The packing groove of encirclement；
It combines hub disk with shroud press fitting, makes connection plug insertion connection jack, and inject the plastics general of fusing into packing groove
Packing groove is filled and led up, and connection plastic body is formed after the plastics in packing groove are cooling；
It polishes impeller surface burr, obtains the immersible pump double shrouded wheel finished product of injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350051.1A CN109253108A (en) | 2018-11-14 | 2018-11-14 | A kind of the immersible pump double shrouded wheel and its production method of injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350051.1A CN109253108A (en) | 2018-11-14 | 2018-11-14 | A kind of the immersible pump double shrouded wheel and its production method of injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253108A true CN109253108A (en) | 2019-01-22 |
Family
ID=65043568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811350051.1A Pending CN109253108A (en) | 2018-11-14 | 2018-11-14 | A kind of the immersible pump double shrouded wheel and its production method of injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253108A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131206A (en) * | 2019-05-29 | 2019-08-16 | 太仓市宇格明叶环保设备有限公司 | A kind of integrated injection molding impeller with good corrosion resistance |
| CN110142930A (en) * | 2019-05-29 | 2019-08-20 | 太仓市宇格明叶环保设备有限公司 | A kind of mold and integrally formed impeller of efficient integrated injection molding impeller |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2330815Y (en) * | 1997-02-28 | 1999-07-28 | 罗定市水泵厂 | Submerged pump with axial seal structure |
| EP1533104A2 (en) * | 2003-11-21 | 2005-05-25 | Siemens Aktiengesellschaft | Process for manufacturing a rotor for a centrifugal pump |
| US20080199319A1 (en) * | 2005-07-06 | 2008-08-21 | Schaeffler Kg | Water Pump Impeller |
| US20100040472A1 (en) * | 2008-08-13 | 2010-02-18 | Rolls-Royce Plc | Annulus filler |
| CN103943751A (en) * | 2013-01-17 | 2014-07-23 | 隆达电子股份有限公司 | Light-emitting device, light-emitting diode bearing seat and die thereof |
| CN204041437U (en) * | 2014-08-15 | 2014-12-24 | 无锡市德美嘉机械科技有限公司 | A kind of hydraulic planger pump housing assembly |
| CN204476848U (en) * | 2014-12-12 | 2015-07-15 | 四川三台剑门泵业有限公司 | A kind of enclosed water pump impeller being convenient to process |
| CN209012119U (en) * | 2018-11-14 | 2019-06-21 | 刘子鸣 | A kind of immersible pump double shrouded wheel of injection molding |
-
2018
- 2018-11-14 CN CN201811350051.1A patent/CN109253108A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2330815Y (en) * | 1997-02-28 | 1999-07-28 | 罗定市水泵厂 | Submerged pump with axial seal structure |
| EP1533104A2 (en) * | 2003-11-21 | 2005-05-25 | Siemens Aktiengesellschaft | Process for manufacturing a rotor for a centrifugal pump |
| US20080199319A1 (en) * | 2005-07-06 | 2008-08-21 | Schaeffler Kg | Water Pump Impeller |
| US20100040472A1 (en) * | 2008-08-13 | 2010-02-18 | Rolls-Royce Plc | Annulus filler |
| CN103943751A (en) * | 2013-01-17 | 2014-07-23 | 隆达电子股份有限公司 | Light-emitting device, light-emitting diode bearing seat and die thereof |
| CN204041437U (en) * | 2014-08-15 | 2014-12-24 | 无锡市德美嘉机械科技有限公司 | A kind of hydraulic planger pump housing assembly |
| CN204476848U (en) * | 2014-12-12 | 2015-07-15 | 四川三台剑门泵业有限公司 | A kind of enclosed water pump impeller being convenient to process |
| CN209012119U (en) * | 2018-11-14 | 2019-06-21 | 刘子鸣 | A kind of immersible pump double shrouded wheel of injection molding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131206A (en) * | 2019-05-29 | 2019-08-16 | 太仓市宇格明叶环保设备有限公司 | A kind of integrated injection molding impeller with good corrosion resistance |
| CN110142930A (en) * | 2019-05-29 | 2019-08-20 | 太仓市宇格明叶环保设备有限公司 | A kind of mold and integrally formed impeller of efficient integrated injection molding impeller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109253108A (en) | A kind of the immersible pump double shrouded wheel and its production method of injection molding | |
| JP2008545095A (en) | Water pump impeller | |
| CN101376163B (en) | Technique for forming class form of flange bolt hole casting parts | |
| CN209012119U (en) | A kind of immersible pump double shrouded wheel of injection molding | |
| CN205128859U (en) | Water pump vane psammitolite | |
| CN104131995A (en) | Water pump impeller manufacturing method and water pump | |
| CN101985234B (en) | Processing technology of wax mould of nozzle ring | |
| CN111511140A (en) | Low-pressure explosion-proof integrated end cover and manufacturing process thereof | |
| CN204152840U (en) | The impeller of resin-based carbon fiber composite acid-proof pump | |
| CN2864201Y (en) | High-strength plastic gear type micro-motor output axle | |
| CN211701650U (en) | Bonding neodymium iron boron magnetic ring that knocks is prevented to side | |
| CN109372794A (en) | A kind of impeller of high-accuracy casting closed centrifugal pump | |
| CN202096930U (en) | Improved mixer | |
| CN209324732U (en) | A kind of plastic impeller modular construction of Submersible Pump | |
| CN109519412B (en) | Plastic impeller structure of submersible electric pump for well and injection molding process thereof | |
| CN201574817U (en) | Cooling water pipe of engine | |
| CN203650819U (en) | Machining mould for air intake manifold rubber nylon valve block of engine | |
| CN101773982A (en) | Fluid coupling pump impeller/turbine casting model | |
| CN201874622U (en) | Turbine rotor | |
| CN203570601U (en) | All-plastic light high-temperature resistant slurry pump | |
| CN209587331U (en) | A kind of reduced form check valve and return water system | |
| CN215633959U (en) | New structure impeller of automobile fuel pump | |
| KR20120064885A (en) | Core for gravity pressure casting | |
| CN213002490U (en) | Forming tool for S-shaped air inlet channel | |
| CN214981969U (en) | Steam-curing-free concrete pole mould structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |