CN103452899A - Impeller structure of sinking pump for well - Google Patents

Impeller structure of sinking pump for well Download PDF

Info

Publication number
CN103452899A
CN103452899A CN2013104640144A CN201310464014A CN103452899A CN 103452899 A CN103452899 A CN 103452899A CN 2013104640144 A CN2013104640144 A CN 2013104640144A CN 201310464014 A CN201310464014 A CN 201310464014A CN 103452899 A CN103452899 A CN 103452899A
Authority
CN
China
Prior art keywords
impeller
ring
annular groove
annular
stainless steel
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
Application number
CN2013104640144A
Other languages
Chinese (zh)
Inventor
陈国荣
唐卫全
谭伟泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangmen Ruirong Pump Industry Co Ltd
Original Assignee
Jiangmen Ruirong Pump Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangmen Ruirong Pump Industry Co Ltd filed Critical Jiangmen Ruirong Pump Industry Co Ltd
Priority to CN2013104640144A priority Critical patent/CN103452899A/en
Publication of CN103452899A publication Critical patent/CN103452899A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses an impeller structure of a sinking pump for a well. The impeller structure of the sinking pump for the well comprises a plastic flow guide shell base, an impeller arranged in the flow guide shell base and a plastic flow guide shell. The impeller structure of the sinking pump for the well is characterized in that an annular groove formed by arranging protruding edges from a body is formed in the position, around the edge of a central hole, in the flow guide shell base, a protruding annular water sealing member is arranged on the bottom face of the impeller, a wearing ring is further arranged in the annular groove, the wearing ring is located between the friction surface of the impeller and the friction surface of the flow guide shell base and is capable of moving along with the rotation of the impeller, and the annular water sealing member, the wearing ring, the annular groove and the protruding edges of the annular groove are matched together to form a dynamic leak-proof annular water sealing band. Due to the fact that the wearing ring can move along with the rotation of the impeller, relative friction speed can be reduced, the friction plane of the wearing ring can be maintained smooth, fierce abrasion can not be generated to the impeller or the flow guide shell base, the service life of the impeller structure is prolonged, and the quality of the water pump is improved. Therefore, the impeller structure of the sinking pump for the well has the advantages of being simple in manufacturing technology, low in cost, easy to mount, durable in use, and not prone to fault occurrence.

Description

The well diving pump impeller structure
Technical field
The present invention relates to a kind of well diving pump impeller structure.
Background technique
In prior art, well mainly comprises the water conservancy diversion shell block and is arranged on the impeller in this water conservancy diversion shell block with diving pump impeller structure, and blower inlet casing, the well submersible pump is to be stacked in from the bottom up in a Stainless Steel Tube and to be formed by the multi-stage impeller structure, and all impellers are driven by same hexagonal pump shaft, along with vane rotary water is up carried from below along blade wheel structures at different levels, except uppermost one-level blade wheel structure, other every grade blade wheel structure all has the water conservancy diversion shell block from the bottom up successively, impeller, the blower inlet casing closed assembly together, uppermost one-level blade wheel structure just reduces blower inlet casing so that directly from the top water outlet, all impellers all are serially connected on same hexagonal pump shaft jointly, but in actual use, impeller can apply pressure to the bottom surface of water conservancy diversion shell block downwards under the effect of hydraulic pressure, and make the surface of contact between them become rubbing surface, can produce wearing and tearing under long-term the use, if both do not have wearing layer between the rubbing surface, this position easily produces wearing and tearing, thereby cause impeller to continue to descend, rubbing surface is increasing, the resistance produced is also increasing, affect the water pump quality, in prior art, be embedded with a plastic hoop at water conservancy diversion shell block center hole circumferential position, it is the metal U-groove bevel ring of lockstitching a border with profile of tooth on the center hole circumference with being fixed on, push down above plastic hoop and fix by the embedding of plastic hoop bag and with the profile of tooth lock seaming, between teeth groove, the plastic cover projection is as wear-resisting rubbing surface, this structure is with the metal U-groove bevel ring of profile of tooth lock seaming and to be fixed in the manufacturing process of water conservancy diversion shell block center hole circumferential position more complicated, the more cost of operation is higher, simultaneously, although profile of tooth is lockstitched a border while encasing plastic hoop lower than the plastic hoop rubbing surface, but after its friction subsurface surface wear descends, the impeller bottom surface just with the profile of tooth of metal lock seaming rubbing contact, if plastic impeller, the plastic impeller bottom surface just easily sustains damage and groove occurs, water pump easily breaks down, if stainless steel impeller, between metal, friction equally causes damage to cause the water pump fault to impeller, so the blade wheel structure of prior art is not only made trouble aborning, and in use impeller easily weares and teares water pump is easily broken down, this is in industry, to study to be badly in need of the technical problem solved.
Summary of the invention
The purpose of this invention is to provide a kind of manufacturing process simple, cost is lower, and the well diving pump impeller structure of difficult generation fault durable in use easily is installed.
In order to solve the problems of the technologies described above, well of the present invention by the technological scheme of diving pump impeller structure is: comprise the water conservancy diversion shell block of plastics and be arranged on the impeller in this water conservancy diversion shell block, and the blower inlet casing of plastics, it is characterized in that: described blower inlet casing seat ring is provided with from body and generates the annular groove that protruding rim forms around the center hole marginal position, protruding annular water sealing piece is arranged in the impeller bottom surface, also has a wear ring be arranged in annular groove, this wear ring is can move about with vane rotary between impeller and water conservancy diversion shell block rubbing surface, described annular water sealing piece coordinates the dynamic anti-leak annular of formation water shutoff band together with annular groove and protruding rim thereof with wear ring.
As one of preferred technological scheme of the present invention, be: described impeller is plastic impeller, the annular water sealing piece of impeller bottom surface projection is an annular flange flange generated from impeller body, described wear ring is a U-shaped metal ring, and two top edges of this U-shaped metal ring have the planar rim of bending outward, described annular flange flange is placed in the annular groove of U-shaped metal ring, and can make plane and impeller bottom surface plane contact on described planar rim, the groove body of U-shaped metal ring is placed in the annular groove of water conservancy diversion shell block, and can make the upper-end surface plane contact of the protruding rim of planar rim lower plane and annular groove.
One of preferred technological scheme of the present invention is done further preferably: also be provided with one and be hidden in the rubber seal of being pushed down by the groove bottom of U-shaped metal ring in the bottom land of described annular groove.
One of preferred technological scheme of the present invention is done further preferably: described wear ring is a kind of integrated U-shaped stainless steel ring.
As two of the preferred technological scheme of the present invention, be: described impeller is stainless steel impeller, the annular water sealing piece of impeller bottom surface projection is a stainless steel n shape ring for the sealing liquid that is welded in the impeller bottom surface, wherein stainless steel n shape ring for the sealing liquid inner end is connected with impeller center water inlet ring end edge, stainless steel n shape ring for the sealing liquid outboard end periphery cover is crossed the protruding rim in the described annular groove outside, described wear ring is a n shape plastic hoop, its annular groove can entangle the tip edge of described annular groove by center hole one side projection rim, and the ring surface anchor ring that can allow n shape plastic hoop cross centre hole side near the ring surface of centre hole side with stainless steel n shape ring for the sealing liquid contacts, also allow n shape plastic hoop upper-end surface and stainless steel n shape ring for the sealing liquid groove bottom plane contact simultaneously.
The invention has the beneficial effects as follows: because wear ring of the present invention is mounted in annular groove, can move about between impeller and water conservancy diversion shell block rubbing surface with vane rotary, reduce relative friction speed, and it is level and smooth that the frictional plane of wear ring can keep, can not produce sharp wear to impeller or water conservancy diversion shell block, extended the life-span of blade wheel structure, improved the water pump quality, preferably wear ring adopts different from impeller material, for example for plastic impeller, adopt the stainless steel wear ring, adopt the plastic wear-resisting ring for stainless steel impeller, soft or hard matches, more favourable to extending the blade wheel structure life-span, in the manufacturing, all parts can both one-body moldedly be manufactured simultaneously, after assembling parts, can use, need to not carry out secondary mechanical processing and assembling blower inlet casing base member according to prior art, so it is simple that the present invention has manufacturing process, cost is lower, the beneficial effect of difficult generation fault durable in use easily is installed.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, well of the present invention is done to more detailed description with diving pump impeller structure.
The sectional structure chart of Fig. 1 when to be well of the present invention use plastic impeller with diving pump impeller structure.
Fig. 2 is the plan view of well of the present invention with water conservancy diversion shell block in diving pump impeller structure.
Fig. 3 is the worm's eye view of Fig. 2.
Fig. 4 is the rear view of Fig. 2.
Fig. 5 is that the A-A of Fig. 2 is to sectional view.
Fig. 6 is the stereogram of Fig. 2.
Fig. 7 is the plan view of well of the present invention while with wear ring in diving pump impeller structure, being the U-shaped metal ring.
Fig. 8 is the rear view of Fig. 7.
Fig. 9 is the worm's eye view of Fig. 7.
Figure 10 is that the B-B of Fig. 7 is to sectional view.
Figure 11 is the stereogram of Fig. 7.
Figure 12 is the stereogram of Fig. 8.
Figure 13 is the plan view of well of the present invention with plastic impeller in diving pump impeller structure.
Figure 14 is the longitudinal sectional view of Figure 13.
Figure 15 is the worm's eye view of Figure 13.
Figure 16 is the plan view of Figure 13.
Figure 17 is the stereogram of Figure 16.
Figure 18 is the stereogram of Figure 15.
Figure 19 is the main parallax stereogram of well of the present invention with blower inlet casing in diving pump impeller structure.
Figure 20 is the rear perspective view of well of the present invention with blower inlet casing in diving pump impeller structure.
The sectional structure chart of Figure 21 when to be well of the present invention use stainless steel impeller with diving pump impeller structure.
Figure 22 is the plan view of well of the present invention while with wear ring in diving pump impeller structure, being n shape plastic hoop.
Figure 23 is the worm's eye view of Figure 22.
Figure 24 is the rear view of Figure 22.
Figure 25 is that the C-C of Figure 22 is to sectional view.
Figure 26 is the stereogram of Figure 24.
Figure 27 is the stereogram of Figure 22.
Figure 28 is the plan view of well of the present invention with stainless steel impeller in diving pump impeller structure.
Figure 29 is the longitudinal sectional view of Figure 28.
Figure 30 is the worm's eye view of Figure 28.
Figure 31 is the plan view of Figure 28.
Figure 32 is the stereogram of Figure 28.
Figure 33 is the stereogram of Figure 30.
Embodiment
Shown in Fig. 1~33, well of the present invention with the mode of execution of diving pump impeller structure is: comprise the water conservancy diversion shell block 1 of plastics and be arranged on the impeller 2 in this water conservancy diversion shell block, and the blower inlet casing 3 of plastics, described water conservancy diversion shell block 1 is provided with from body and generates the annular groove 4 that protruding rim 9 forms around the center hole marginal position, in impeller 2 bottom surfaces, protruding annular water sealing piece 5 is arranged, also has a wear ring 6 be arranged in annular groove 4, this wear ring 6 is can move about with vane rotary between impeller 2 and water conservancy diversion shell block 1 rubbing surface, described annular water sealing piece 5 coordinates the dynamic anti-leak annular of formation water shutoff band together with annular groove 4 and protruding rim 9 thereof with wear ring 6.In the present embodiment, wear ring 6 can move about between impeller 2 and water conservancy diversion shell block 1 rubbing surface, can reduce relative friction speed, and it is level and smooth that the frictional plane of wear ring 6 can keep, can not produce sharp wear to impeller or water conservancy diversion shell block, extended the life-span of blade wheel structure, improved the water pump quality, preferably wear ring 6 is different from the material of impeller 2, for example for plastic impeller, adopt the stainless steel wear ring, adopt the plastic wear-resisting ring for stainless steel impeller, soft or hard matches, more favourable to extending the blade wheel structure life-span.
Shown in Fig. 1~18, as one of preferred embodiment of the present invention, be: described impeller 2 is plastic impellers, the annular water sealing piece 5 of impeller 2 bottom surface projections is annular flange flange that generate from impeller body, described wear ring 6 is U-shaped metal rings, and two top edges of this U-shaped metal ring have the planar rim 7 of bending outward, described annular flange flange is placed in the annular groove of U-shaped metal ring, and can make plane and impeller 2 bottom surface plane contact on described planar rim 7, the groove body of U-shaped metal ring is placed in the annular groove 4 of water conservancy diversion shell block 1, and can make the upper-end surface plane contact of the protruding rim 9 of planar rim 7 lower planes and annular groove 4.In the present embodiment, the U-shaped metal ring shape of wear ring 6 can impact briquetting, and the U-shaped metal ring can move about between impeller 2 and water conservancy diversion shell block 1 rubbing surface with vane rotary, and the upper lower plane of planar rim 7 is as frictional plane.
As shown in Figure 1, one of preferred embodiment of the present invention is done further preferably: also be provided with one and be hidden in the rubber seal 8 of being pushed down by the groove bottom of U-shaped metal ring in the bottom land of described annular groove 4.In the present embodiment, the rubber seal 8 of increase adopts O shape rubber seal, and it can better strengthen the seal action of dynamic anti-leak annular water shutoff band.
Shown in Fig. 7~12, one of preferred embodiment of the present invention is done further preferably: described wear ring 6 is a kind of integrated U-shaped stainless steel rings.In the present embodiment, wear ring 6 adopts stainless steel not only wear-resisting all right fine antirust, and stainless steel can adopt 304 stainless steels.
Shown in Figure 21~33, as two of the preferred embodiment of the present invention, be: described impeller 2 is stainless steel impellers, the annular water sealing piece 5 of impeller 2 bottom surface projections is stainless steel n shape rings for the sealing liquid that are welded in the impeller bottom surface, wherein stainless steel n shape ring for the sealing liquid inner end is connected with impeller center water inlet ring end edge, stainless steel n shape ring for the sealing liquid outboard end periphery cover is crossed described annular groove 4 outside projection rims 9, described wear ring 6 is n shape plastic hoops, its annular groove can entangle the tip edge of described annular groove 4 by center hole one side projection rim, and the ring surface anchor ring that can allow n shape plastic hoop cross centre hole side near the ring surface of centre hole side with stainless steel n shape ring for the sealing liquid contacts, also allow n shape plastic hoop upper-end surface and stainless steel n shape ring for the sealing liquid groove bottom plane contact simultaneously.In the present embodiment, described stainless steel n shape ring for the sealing liquid outboard end periphery cover is crossed described annular groove 4 outside projection rims 9, is to make the annular groove ladle cover of stainless steel n shape ring for the sealing liquid live annular groove 4, strengthens the seal action of dynamic anti-leak annular water shutoff band; N shape plastic hoop can move about between impeller 2 and water conservancy diversion shell block 1 rubbing surface with vane rotary; N shape plastic hoop can adopt the PPO injection molding.
Because wear ring 6 of the present invention is mounted in annular groove 4, can move about between impeller 2 and water conservancy diversion shell block 1 rubbing surface with impeller 2 rotations, reduce relative friction speed, and it is level and smooth that the frictional plane of wear ring 6 can keep, can not produce sharp wear to impeller 2 or water conservancy diversion shell block 1, extended the life-span of blade wheel structure, improved the water pump quality, preferably wear ring 6 adopts different from impeller 2 materials, for example for plastic impeller, adopt the stainless steel wear ring, adopt the plastic wear-resisting ring for stainless steel impeller, soft or hard matches, more favourable to extending the blade wheel structure life-span; In the manufacturing, all parts can both one-body moldedly be manufactured simultaneously, after assembling parts, can use, need to not carry out secondary mechanical processing and assembling blower inlet casing base member according to prior art, so it is simple that the present invention has manufacturing process, cost is lower, the beneficial effect of difficult generation fault durable in use easily is installed.
The above is the preferred embodiment of the present invention, does not form limiting the scope of the invention, so long as implement purpose of the present invention with essentially identical means, all should belong to protection scope of the present invention.

Claims (5)

1. a well diving pump impeller structure, comprise the water conservancy diversion shell block (1) of plastics and be arranged on the impeller (2) in this water conservancy diversion shell block, and the blower inlet casing of plastics (3), it is characterized in that: described water conservancy diversion shell block (1) is provided with from body and generates the annular groove (4) that protruding rim (9) forms around the center hole marginal position, in impeller (2) bottom surface, protruding annular water sealing piece (5) is arranged, also has a wear ring (6) be arranged in annular groove (4), this wear ring (6) is can move about with vane rotary between impeller (2) and water conservancy diversion shell block (1) rubbing surface, described annular water sealing piece (5) and wear ring (6) coordinate the dynamic anti-leak annular of formation water shutoff band together with annular groove (4) and protruding rim (9) thereof.
2. well diving pump impeller structure according to claim 1, it is characterized in that: described impeller (2) is plastic impeller, the annular water sealing piece (5) of impeller (2) bottom surface projection is an annular flange flange generated from impeller body, described wear ring (6) is a U-shaped metal ring, and two top edges of this U-shaped metal ring have the planar rim (7) of bending outward, described annular flange flange is placed in the annular groove of U-shaped metal ring, and can make the upper plane of described planar rim (7) and impeller (2) bottom surface plane contact, the groove body of U-shaped metal ring is placed in the annular groove (4) of water conservancy diversion shell block (1), and can make the upper-end surface plane contact of the protruding rim (9) of planar rim (7) lower plane and annular groove (4).
3. well diving pump impeller structure according to claim 2, is characterized in that: also be provided with one and be hidden in the rubber seal (8) of being pushed down by the groove bottom of U-shaped metal ring in the bottom land of described annular groove (4).
4. well diving pump impeller structure according to claim 2, it is characterized in that: described wear ring (6) is a kind of integrated U-shaped stainless steel ring.
5. well diving pump impeller structure according to claim 1, it is characterized in that: described impeller (2) is stainless steel impeller, the annular water sealing piece (5) of impeller (2) bottom surface projection is a stainless steel n shape ring for the sealing liquid that is welded in the impeller bottom surface, wherein stainless steel n shape ring for the sealing liquid inner end is connected with impeller center water inlet ring end edge, stainless steel n shape ring for the sealing liquid outboard end periphery cover is crossed described annular groove (4) outside protruding rim (9), described wear ring (6) is a n shape plastic hoop, its annular groove can entangle the tip edge of described annular groove (4) by center hole one side projection rim, and the ring surface anchor ring that can allow n shape plastic hoop cross centre hole side near the ring surface of centre hole side with stainless steel n shape ring for the sealing liquid contacts, also allow n shape plastic hoop upper-end surface and stainless steel n shape ring for the sealing liquid groove bottom plane contact simultaneously.
CN2013104640144A 2013-09-27 2013-09-27 Impeller structure of sinking pump for well Pending CN103452899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013104640144A CN103452899A (en) 2013-09-27 2013-09-27 Impeller structure of sinking pump for well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013104640144A CN103452899A (en) 2013-09-27 2013-09-27 Impeller structure of sinking pump for well

Publications (1)

Publication Number Publication Date
CN103452899A true CN103452899A (en) 2013-12-18

Family

ID=49735630

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013104640144A Pending CN103452899A (en) 2013-09-27 2013-09-27 Impeller structure of sinking pump for well

Country Status (1)

Country Link
CN (1) CN103452899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387456A (en) * 2017-09-04 2017-11-24 河北兴临水泵有限公司 Water pump gland

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735957C (en) * 1940-03-19 1943-06-02 Aeg Two-stage centrifugal pump, especially condensate pump
US3228342A (en) * 1963-11-13 1966-01-11 Barnes Mfg Co Impeller seal for a centrifugal pump
JPS55164797A (en) * 1979-06-11 1980-12-22 Kyokuto Kikai Seisakusho:Kk Wear-resistant weir ring
CN200989322Y (en) * 2006-11-08 2007-12-12 浙江工业大学 Double-sealing face vane type pump
CN101178076A (en) * 2007-11-16 2008-05-14 江苏大学 Water pump impeller floating seal
WO2012003386A2 (en) * 2010-06-30 2012-01-05 Schlumberger Canada Limited Durable pumps for abrasives
CN102536872A (en) * 2010-12-16 2012-07-04 苏舍泵有限公司 Flow engine for a fluid with a radial sealing gap and a stationary wear ring
CN203476787U (en) * 2013-09-27 2014-03-12 江门市瑞荣泵业有限公司 Impeller structure of submerged pump for well

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735957C (en) * 1940-03-19 1943-06-02 Aeg Two-stage centrifugal pump, especially condensate pump
US3228342A (en) * 1963-11-13 1966-01-11 Barnes Mfg Co Impeller seal for a centrifugal pump
JPS55164797A (en) * 1979-06-11 1980-12-22 Kyokuto Kikai Seisakusho:Kk Wear-resistant weir ring
CN200989322Y (en) * 2006-11-08 2007-12-12 浙江工业大学 Double-sealing face vane type pump
CN101178076A (en) * 2007-11-16 2008-05-14 江苏大学 Water pump impeller floating seal
WO2012003386A2 (en) * 2010-06-30 2012-01-05 Schlumberger Canada Limited Durable pumps for abrasives
CN102536872A (en) * 2010-12-16 2012-07-04 苏舍泵有限公司 Flow engine for a fluid with a radial sealing gap and a stationary wear ring
CN203476787U (en) * 2013-09-27 2014-03-12 江门市瑞荣泵业有限公司 Impeller structure of submerged pump for well

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387456A (en) * 2017-09-04 2017-11-24 河北兴临水泵有限公司 Water pump gland

Similar Documents

Publication Publication Date Title
CN104315185A (en) Double-scraper ultra-hard sealing ball valve
CN203476787U (en) Impeller structure of submerged pump for well
CN103452899A (en) Impeller structure of sinking pump for well
CN103591323B (en) Single water route ceramic cartridge structure
CN202622583U (en) Shot blasting device for shot blasting machine
CN201326567Y (en) Pump machinery sealed movable ring structure
CN201092963Y (en) Vortex pump
CN2541637Y (en) Orifice ring self-compensating constant gap sealing structure of centrifugal pump
CN210715252U (en) Wear-resisting blade guide wheel for petroleum machinery
CN202971284U (en) Centrifugal pump shaft
CN202852084U (en) Ball check valve
CN203516178U (en) Well submersible pump impeller with wear resistance
CN206889333U (en) A kind of sealing ring for centrifugal pump
CN204532866U (en) A kind of water pump
CN202348638U (en) Yacht water jet pump sealing ring
CN206617372U (en) A kind of water pump water guide stand and water pump
CN204532868U (en) A kind of water pump
CN210660717U (en) Impeller assembly of deep-well pump
CN204532860U (en) Water pump
CN106015683A (en) Erosion-resistant adjustable cock valve
CN204532864U (en) Water pump
CN103867717A (en) Extensible hollow sealing ring
CN211423018U (en) Submersible pump
CN204572481U (en) Corrosion resistant centrifugal pump
CN204572480U (en) Corrosion resistant centrifugal pump

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: Du Ruan North Road Pengjiang District Guangdong city of Jiangmen Province, No. 22 529075

Applicant after: GUANGDONG RUIRONG PUMP INDUSTRY CO., LTD.

Address before: Du Ruan North Road Pengjiang District Guangdong city of Jiangmen Province, No. 22 529075

Applicant before: Jiangmen Ruirong Pump Industry Co., Ltd.

COR Change of bibliographic data

Free format text: CORRECT: APPLICANT; FROM: RUIRONG PUMP INDUSTRY CO. LTD., JIANGMEN CITY TO: UANGDONG RUIRONG PUMP INDUSTRY CO., LTD.

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20131218