CN104564697B - Self priming pump - Google Patents
Self priming pump Download PDFInfo
- Publication number
- CN104564697B CN104564697B CN201510051425.XA CN201510051425A CN104564697B CN 104564697 B CN104564697 B CN 104564697B CN 201510051425 A CN201510051425 A CN 201510051425A CN 104564697 B CN104564697 B CN 104564697B
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- CN
- China
- Prior art keywords
- chamber
- fluid reservoir
- gas
- liquid separation
- blade wheel
- 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.)
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- 230000037452 priming Effects 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 239000012530 fluid Substances 0.000 claims abstract description 60
- 238000000926 separation method Methods 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012071 phase Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming 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
- F04D29/007—Details, component parts, or accessories 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
nullThe present invention relates to pump technology field，Particularly to a kind of self priming pump，Including the pump housing，Blade wheel chamber is included in the pump housing、Gas-liquid separation chamber、Suction chamber、Fluid reservoir，Blade wheel chamber is provided with the impeller being connected with line shaft，Gas-liquid separation chamber respectively with blade wheel chamber、Fluid reservoir connects，Suction chamber respectively with intake line、Blade wheel chamber connects，Fluid reservoir connects with blade wheel chamber，The outlet that described gas-liquid separation chamber is arranged is connected with output pipe，Inlet port in described outlet and gas-liquid separation chamber misses one another layout，The described bypass outlet in gas-liquid separation chamber、Inlet port is less than outlet，The path position of withdrawing fluid can be made to be in the inflow path of the gas-liquid mixture entering gas-liquid separation indoor and to dodge position，Cause the backflow can be the most smooth、It is back to fluid reservoir timely and participates in follow-up circulating，Quickly air is drained，Improve the self-priming performance of self priming pump.
Description
Technical field
The present invention relates to pump technology field, particularly to a kind of self priming pump.
Background technology
nullSelf priming pump is a kind of equipment for carrying liquid，At oil、Chemical industry、Smelt、The production procedures such as national defense industry are extensively applied，Traditional self priming pump structure such as Fig. 1，By drive end bearing bracket a、Pump housing b、Impeller c、Pump cover d、The parts compositions such as discharge connection e，In self priming pump, gas-liquid separation chamber's part is to be connected and composed by the blade wheel chamber anemostat f and discharge connection e of pump housing b，Offer bottom anemostat f inlet port and bypass outlet respectively with blade wheel chamber、Fluid reservoir is connected，The bottom of anemostat f arranges a dividing plate g and constitutes inlet port arranged adjacent one another and bypass outlet，The mouth of pipe of discharge connection e directly connects with output pipe，When self priming pump is started working，The gas-liquid mixture that blade wheel chamber discharges inlet port bottom anemostat f carries from bottom to top，Liquid therein will be dropped back into fluid reservoir through bypass outlet from top to bottom by action of gravity after rising to the top of dividing plate g，Gas is then discharged through discharge connection e，The gas-liquid mixture of blade wheel chamber's ejection produces resistance to backflow above dividing plate g，Liquid fall velocity is caused to slow down，Thus affect the efficiency of gas-liquid separation.Additionally, when output pipe just has bending in the closer distance of distance discharge connection e, the gas-liquid mixture of gas-liquid separation indoor will be directly over the bending part of output pipe and flow away, liquid in the fluid reservoir of aerofluxus is once drained and gas in input channel not yet empties, then will be unable to realize the pump function of the pump housing, only filling exhaust medium again in fluid reservoir, until gas emptying could normally work.
Summary of the invention
It is an object of the invention to provide a kind of self priming pump that can realize high efficiency separation gas-liquid.
For achieving the above object, the technical solution used in the present invention is: a kind of self priming pump, including the pump housing, blade wheel chamber is included in the pump housing, gas-liquid separation chamber, suction chamber, fluid reservoir, blade wheel chamber is provided with impeller, impeller shaft one end is connected with impeller, the other end is positioned at pump housing outside and is connected with line shaft, gas-liquid separation chamber respectively with blade wheel chamber, fluid reservoir connects, suction chamber respectively with intake line, blade wheel chamber connects, fluid reservoir connects with blade wheel chamber, the outlet of described gas-liquid separation chamber is connected with output pipe, the inlet port of described outlet and gas-liquid separation chamber misses one another layout, the bypass outlet of described gas-liquid separation chamber, inlet port is less than outlet.
Compared with prior art, there is techniques below effect in the present invention: the inlet port in gas-liquid separation chamber is arranged with outlet dislocation, the path position of withdrawing fluid can be made to be in the inflow path of the gas-liquid mixture entering gas-liquid separation indoor and to dodge position, cause backflow can be back to fluid reservoir the most smoothly, timely and participate in follow-up circulating, quickly air is drained, improve the self-priming performance of self priming pump.
Accompanying drawing explanation
Fig. 1 is the structural representation in background technology；
Fig. 2 is the left view of the present invention；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the left view of body；
Fig. 5 is B-B sectional view in Fig. 4；
Fig. 6 is the top view of Fig. 4；
Fig. 7 is the top view of top cover；
Fig. 8 is the C-C sectional view in Fig. 7.
Detailed description of the invention
Below in conjunction with Fig. 1-Fig. 8, the present invention is described in further detail.
A kind of self priming pump, including the pump housing, blade wheel chamber 11 is included in the pump housing, gas-liquid separation chamber 12, suction chamber 13, fluid reservoir 14, blade wheel chamber 11 is provided with impeller 20, impeller shaft 30 one end is connected with impeller 20, the other end is positioned at pump housing outside and is connected with line shaft, gas-liquid separation chamber 12 respectively with blade wheel chamber 11, fluid reservoir 14 connects, suction chamber 13 respectively with intake line, blade wheel chamber 11 connects, fluid reservoir 14 connects with blade wheel chamber 11, the outlet 121 of described gas-liquid separation chamber 12 is connected with output pipe, the inlet port 122 of described outlet 121 and gas-liquid separation chamber 12 misses one another layout, the bypass outlet 123 of described gas-liquid separation chamber 12, inlet port 122 is less than outlet 121.The outlet 121 of gas-liquid separation chamber 12 is arranged with inlet port 122 dislocation, make the path position of withdrawing fluid be in the inflow path of the gas-liquid mixture entered in gas-liquid separation chamber 12 and dodge position, cause the backflow can be the most smooth, it is back to fluid reservoir 14 timely and participates in follow-up circulating, improve self priming pump and carry out the efficiency of gas-liquid separation, additionally, work the initial exhaust stage at self priming pump, gas-liquid mixture can also be avoided to go out outlet 121 and to enter output pipe, initial stage filling or in originally retaining in the pump housing liquid contribute to circulating exhaust process, so that pump is operated in the operating condition of normal pumped (conveying) medium as early as possible.
As further preferred version: the described pump housing includes body 10, the inside of body 10 includes the dividing plate 15 vertically placed, suction chamber 13, fluid reservoir 14 are arranged in the front side of dividing plate 15, rear side arranges blade wheel chamber 11, and gas-liquid separation chamber 12 is positioned at the top of dividing plate 15 and the bottom surface 124 of gas-liquid separation chamber 12 and is connected with the top of dividing plate 15.Said structure is arranged, owing to being beneficial to distribute position and the connected relation of each room, illustrates below in conjunction with accompanying drawing.
Further, described gas-liquid separation chamber 12 is the chamber of the cuboid enclosed by bottom surface 124, side 125 and top cover 126, and outlet 121 is arranged on top cover 126, and inlet port 122 and bypass outlet 123 are arranged in the corner of bottom surface 124.In conjunction with Fig. 6, so inlet port 122 and bypass outlet 123 are separated layout, when gas-liquid mixture is entered gas-liquid separation chamber 12 by inlet port 122, due to blocking of top cover 126, in gas-liquid mixture, liquid phase is blocked back reflection and flows downward, gas phase is then pushed on top cover 126 at the outlet 121 of setting discharge, thus realize the separation of gas, liquid, it is reflected towards the liquid phase of lower flowing under gravity, is rapidly flowing into bypass outlet 123 and enters fluid reservoir 14 and participate in follow-up exhaust cycle process.
See Fig. 5, the plate face of described dividing plate 15 is arranged along the length direction of bottom surface 124, and bottom surface 124 divided equally by dividing plate 15, the plate face of dividing plate 15 is axially vertical with impeller 20, the number of bypass outlet 123 is 2, bypass outlet 123 and fluid reservoir 14 are arranged in the same side of dividing plate 15, and inlet port 122 is arranged in the opposite side of dividing plate 15, are all directly connected by straight pipeline between bypass outlet 123 with fluid reservoir 14 and between inlet port 122 with blade wheel chamber 11.Referring also to Fig. 6, said structure can also be expressed as: the plate face of dividing plate 15 is arranged vertically with the revolution axle center of impeller 20, the upwardly extending virtual plate face, plate face of dividing plate 15 gas-liquid separation chamber 12 is divided into along impeller 20 gyroaxis axially before and after two regions, wherein forefoot area is positioned at the top of fluid reservoir 14, rear region is positioned at the top of blade wheel chamber 11, and so arranging connecting pipeline directly can connect blade wheel chamber 11, fluid reservoir 14 with the corresponding site above-below direction of gas-liquid separation chamber 12.The liquid phase being so conducive to gas-liquid mixed to enter mutually in gas-liquid separation chamber 12, the most beneficially gas-liquid separation chamber 12 is back to fluid reservoir 14 rapidly.
The front end of described body 10 includes constituting suction chamber 13, the suction chamber leg 131 of fluid reservoir 14, fluid reservoir leg 141, suction chamber leg 131 encloses the suction chamber 13 of bar column, the upper and lower side of suction chamber leg 131 is by circular arc camber transition, fluid reservoir leg 141 is notch part C-shaped upwards, the lower end of suction chamber 13 is positioned at the middle part of fluid reservoir 14, suction chamber leg 131, drive end bearing bracket 16 is set on the outer face of fluid reservoir leg 141, drive end bearing bracket 16 and suction chamber leg 131, between fluid reservoir leg 141, sealing gasket is set, the pad face shape of sealing gasket and suction chamber leg 131, the contour shape of fluid reservoir leg 141 coincide.Because gas-liquid separation chamber 12 is to connect with fluid reservoir 14 via two bypass outlets 123, the fluid reservoir leg 141 of fluid reservoir 14 is designed to notch part C-shaped upwards, and then port is offered respectively to connect via the straight pipeline of above-below direction with two corresponding bypass outlets 123 in the two ends in the region of C-shaped.It is to coordinate the position of through hole 151 on the pipe joint 161 and dividing plate 15 arranged on drive end bearing bracket 16 that the upper-lower section of suction chamber leg 131 is designed to circular arc camber, it is ensured that runner smooth and easy, reduces flow resistance.
The pipe joint 161 connected with suction chamber 13 it is provided with on described drive end bearing bracket 16, offering through hole 151 on dividing plate 15 to be connected with the middle part of blade wheel chamber 11 lower end of suction chamber 13, the bottom of dividing plate 15 offers small through hole 152 and is connected the bottom of fluid reservoir 14 with blade wheel chamber 11.Pipe joint 161, for connecting the pipeline being connected with fluid reservoir or liquid storage tank, when self priming pump is just started working, has gas to need first in the pipeline being connected with fluid reservoir or liquid storage tank and gets rid of, the most just start normal pumping procedure.The work process of the present invention described briefly below:
Before pump startup, in suction chamber 13, blade wheel chamber 11 and fluid reservoir 14, it is filled with the liquid phase of suitable liquid level；nullDuring pump startup，In blade wheel chamber 11, liquid is pumped to gas-liquid separation chamber 12，Gas phase in gas-liquid separation chamber 12 is discharged from outlet 121，Liquid phase is back to fluid reservoir 14 quickly via bypass outlet 123，Liquid phase in suction chamber 13 enters blade wheel chamber 11 via through hole 151，Gas-liquid separation chamber 12 is pumped into again by blade wheel chamber 11，Suction chamber 13 will progressively be rendered as subnormal ambient，Along with further subnormal ambient is set up，Gas in the pump housing and in pipeline will be introduced into suction chamber 13 and is pumped into gas-liquid separation chamber 12 with the liquid in blade wheel chamber 11 with mixed state，Gas phase continues to discharge，So circulation work a period of time，Gas in the pipeline being connected with fluid reservoir or liquid storage tank is gradually got rid of，Liquid in fluid reservoir or liquid storage tank will be inhaled in pump，It is pumped into stand-by region again，The present invention possesses the rapid remarkable result of gas-liquid separation.
It is respectively arranged with, in the outer end edges of described fluid reservoir leg 141 and the outer end edges of suction chamber leg 131 top and the bottom, the bolt hole 132 being connected with drive end bearing bracket 16 corresponding position, suction chamber 13 the most just can be made with fluid reservoir 14 to completely cut off into two independent chambers completely.
Offering water filling port 40 on described top cover 126, the top of water filling port 40 arranges filler cover 50.Before self priming pump work, can inject liquid medium corresponding with band pumped liquid by water filling port 40 in the pump housing, after the air in the pump housing and connecting line is discharged, self priming pump starts normally to work.
It is respectively provided with sealing gasket, it is ensured that the realization of sealing between described top cover 126 and body 10 and between filler cover 50 and water filling port 40.
The liner 60 of anticorrosion and high-abrasive material it is covered with on described pump housing chamber inner wall, its median septum 15 and the dividing plate 17 constituting suction chamber 13 and gas-liquid separation chamber 12 are homogeneity integrated formed structure with liner 60, so it is beneficial to the machine-shaping of the pump housing, and make self priming pump may be used for conveying and there is corrosive liquid, increase the service life of self priming pump.
Claims (10)
- null1. a self priming pump，Including the pump housing，Blade wheel chamber (11) is included in the pump housing、Gas-liquid separation chamber (12)、Suction chamber (13)、Fluid reservoir (14)，Blade wheel chamber (11) is provided with impeller (20)，Impeller shaft (30) one end is connected with impeller (20)、The other end is positioned at pump housing outside and is connected with line shaft，Gas-liquid separation chamber (12) respectively with blade wheel chamber (11)、Fluid reservoir (14) connects，Suction chamber (13) respectively with intake line、Blade wheel chamber (11) connects，Fluid reservoir (14) connects with blade wheel chamber (11)，It is characterized in that: the outlet (121) of described gas-liquid separation chamber (12) is connected with output pipe，The inlet port (122) of described outlet (121) and gas-liquid separation chamber (12) misses one another layout，The bypass outlet (123) of described gas-liquid separation chamber (12)、Inlet port (122) is less than outlet (121).
- 2. self priming pump as claimed in claim 1, it is characterized in that: the described pump housing includes body (10), the inside of body (10) includes the dividing plate (15) vertically placed, suction chamber (13), fluid reservoir (14) are arranged in the front side of dividing plate (15), rear side arranges blade wheel chamber (11), and gas-liquid separation chamber (12) is positioned at the top of dividing plate (15) and the bottom surface (124) of gas-liquid separation chamber (12) and is connected with the top of dividing plate (15).
- 3. self priming pump as claimed in claim 2, it is characterized in that: described gas-liquid separation chamber (12) is the chamber of the cuboid enclosed by bottom surface (124), side (125) and top cover (126), outlet (121) is arranged on top cover (126), and inlet port (122) and bypass outlet (123) are arranged in the corner of bottom surface (124).
- 4. self priming pump as claimed in claim 3, it is characterized in that: the plate face of described dividing plate (15) is arranged along the length direction of bottom surface (124), and bottom surface (124) divided equally by dividing plate (15), the plate face of dividing plate (15) is axially vertical with impeller (20), the number of bypass outlet (123) is 2, bypass outlet (123) and fluid reservoir (14) are arranged in the same side of dividing plate (15), inlet port (122) is arranged in the opposite side of dividing plate (15), all directly connected by straight pipeline between bypass outlet (123) with fluid reservoir (14) and between inlet port (122) with blade wheel chamber (11).
- nullSelf priming pump the most according to claim 4，It is characterized in that: the front end of described body (10) includes constituting suction chamber (13)、The suction chamber leg (131) of fluid reservoir (14)、Fluid reservoir leg (141)，Suction chamber leg (131) encloses the suction chamber (13) of bar column，The upper and lower side of suction chamber leg (131) is by circular arc camber transition，Fluid reservoir leg (141) is notch part C-shaped upwards，The lower end of suction chamber (13) is positioned at the middle part of fluid reservoir (14)，Suction chamber leg (131)、Drive end bearing bracket (16) is set on the outer face of fluid reservoir leg (141)，Drive end bearing bracket (16) and suction chamber leg (131)、Fluid reservoir leg arranges sealing gasket between (141)，The pad face shape of sealing gasket and suction chamber leg (131)、The contour shape of fluid reservoir leg (141) coincide.
- Self priming pump the most according to claim 5, it is characterized in that: on described drive end bearing bracket (16), be provided with the pipe joint (161) connected with suction chamber (13), offering through hole (151) on dividing plate (15) to be connected with the middle part of blade wheel chamber (11) lower end of suction chamber (13), the bottom of dividing plate (15) offers small through hole (152) and is connected the bottom of fluid reservoir (14) with blade wheel chamber (11).
- Self priming pump the most according to claim 6, it is characterised in that: it is respectively arranged with, in the outer end edges of described fluid reservoir leg (141) and the outer end edges of suction chamber leg (131) top and the bottom, the bolt hole (132) being connected with drive end bearing bracket (16) corresponding position.
- 8. self priming pump as claimed in claim 7, it is characterised in that: offering water filling port (40) on described top cover (126), the top of water filling port (40) arranges filler cover (50).
- 9. self priming pump as claimed in claim 8, it is characterised in that: it is respectively provided with sealing gasket between described top cover (126) and body (10) and between filler cover (50) and water filling port (40).
- 10. self priming pump as claimed in claim 4, it is characterized in that: being covered with the liner (60) of anticorrosion and high-abrasive material, its median septum (15) and the dividing plate (17) constituting suction chamber (13) and gas-liquid separation chamber (12) on described pump housing chamber inner wall is homogeneity integrated formed structure with liner (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051425.XA CN104564697B (en) | 2015-01-30 | 2015-01-30 | Self priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051425.XA CN104564697B (en) | 2015-01-30 | 2015-01-30 | Self priming pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564697A CN104564697A (en) | 2015-04-29 |
| CN104564697B true CN104564697B (en) | 2016-09-14 |
Family
ID=53081549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510051425.XA Active CN104564697B (en) | 2015-01-30 | 2015-01-30 | Self priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564697B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578288A (en) * | 2019-01-02 | 2019-04-05 | 三联泵业股份有限公司 | A kind of gas-liquid mixed type self priming centrifugal pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509779A (en) * | 1994-02-03 | 1996-04-23 | World Chemical Co., Ltd. | Self-priming chemical pump |
| CN202545269U (en) * | 2012-03-16 | 2012-11-21 | 江苏省宜兴非金属化工机械厂有限公司 | Corrosion-resistant and wear-resistant plastic-lined self-priming pump |
| CN202659515U (en) * | 2012-04-11 | 2013-01-09 | 瓮福（集团）有限责任公司 | Graphite self-priming pump |
| CN202746215U (en) * | 2012-08-30 | 2013-02-20 | 台州阳春机电有限公司 | Novel self-sucking pump |
| CN204493203U (en) * | 2015-01-30 | 2015-07-22 | 安徽江南泵阀有限公司 | Self-priming pump |
-
2015
- 2015-01-30 CN CN201510051425.XA patent/CN104564697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509779A (en) * | 1994-02-03 | 1996-04-23 | World Chemical Co., Ltd. | Self-priming chemical pump |
| CN202545269U (en) * | 2012-03-16 | 2012-11-21 | 江苏省宜兴非金属化工机械厂有限公司 | Corrosion-resistant and wear-resistant plastic-lined self-priming pump |
| CN202659515U (en) * | 2012-04-11 | 2013-01-09 | 瓮福（集团）有限责任公司 | Graphite self-priming pump |
| CN202746215U (en) * | 2012-08-30 | 2013-02-20 | 台州阳春机电有限公司 | Novel self-sucking pump |
| CN204493203U (en) * | 2015-01-30 | 2015-07-22 | 安徽江南泵阀有限公司 | Self-priming pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564697A (en) | 2015-04-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 242500 No.16 ruomao Road, Jing County Economic Development Zone, Xuancheng City, Anhui Province Patentee after: Anhui Jiangnan pump valve group Co.,Ltd. Address before: 242500 No.16 ruomao Road, Jing County Economic Development Zone, Xuancheng City, Anhui Province Patentee before: ANHUI JIANGNAN PUMP VALVE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Self suction pump Granted publication date: 20160914 Pledgee: Jingxian SME Financing Guarantee Co.,Ltd. Pledgor: Anhui Jiangnan pump valve group Co.,Ltd. Registration number: Y2024980005850 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |