CN103437993A - Self-sucking pump for high-pressure cleaner - Google Patents
Self-sucking pump for high-pressure cleaner Download PDFInfo
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- CN103437993A CN103437993A CN2013104212048A CN201310421204A CN103437993A CN 103437993 A CN103437993 A CN 103437993A CN 2013104212048 A CN2013104212048 A CN 2013104212048A CN 201310421204 A CN201310421204 A CN 201310421204A CN 103437993 A CN103437993 A CN 103437993A
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- 239000002775 capsule Substances 0.000 claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000005192 partition Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 21
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000033764 rhythmic process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The invention discloses a self-sucking pump for a high-pressure cleaner, and belongs to the technical field of self-sucking pumps. The self-sucking pump for the high-pressure cleaner comprises a pump body; the pump body is provided with a material inlet and a material outlet, and is provided with a material cavity which is communicated with both of the material inlet and the material outlet; the material cavity is internally provided with a plunger slidably driven by a power device; the material inlet is formed in an axis of the plunger; the material inlet and the material outlet are respectively provided with a first capsule and a second capsule respectively; the first capsule and the second capsule are communicated through a pipeline, and are both internally filled with circulation media; the pipeline is provided with a bidirectional pump. The self-sucking pump for the high-pressure cleaner provided by the invention solves the technical problems that a traditional plunger-type self-sucking pump unidirectional valve is affected greatly by impurities, and is poor in seal effect, and is widely applied to the production and manufacture of self-sucking pumps.
Description
Technical field
The present invention relates to a kind of self-priming pump technical field, relate in particular to a kind of self-priming pump for jetting machine, belong to the pump technical field.
Background technique
Self-priming pump is the core parts of jetting machine, and it is designed and development, is the key point of development high-pressure wash machine technology.
At present, it is several that existing self-priming pump is broadly divided into plunger type, blade type, gear type etc. by structural type, and wherein the water pump of plunger type is high due to efficiency, has obtained the research and development of large-scale popularization and new product in actual life.But existing plunger type self-priming pump is owing at water intake and water outlet, one-way valve all being installed, in use, once foreign material be arranged between the sealing surface of the spool of one-way valve and valve body, will make self-priming pump produce interior the leakage, the liquid namely sucked in the material chamber from water intake can some be discharged from water intake again, this not only affects the self-priming pump delivery but also affect the self-priming lift of pump, has greatly affected the normal use of plunger type self-priming pump in the jetting machine.
Therefore, based on above-mentioned defect, at preparation and the production field of jetting machine, for Self-priming pump, still there are research and improved demand, this is also study hotspot and emphasis in the production of current self-pumping and manufacture field, the starting point that the present invention is accomplished especially and power place.
Summary of the invention
Technical problem to be solved by this invention is: a kind of self-priming pump for jetting machine is provided, to solve traditional plunger type self-priming pump one-way valve, is subject to the technical problem that impurity effect is large, sealing effect is bad.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of self-priming pump for jetting machine is provided, described self-priming pump comprises the pump housing, the described pump housing is provided with material feeding mouth and discharge port, the described pump housing is provided with the material chamber that all is communicated with described material feeding mouth and discharge port, be slidably fitted with the plunger driven by power plant in described material chamber, described material feeding mouth is positioned on the axis of described plunger, the footpath that described discharge port is positioned at described plunger makes progress, the described pump housing is provided with charging partition wall and discharging partition wall, described charging partition wall is provided with the feeding-passage that is communicated with described material feeding mouth and material chamber, described discharging partition wall is provided with the tapping channel that is communicated with described discharge port and material chamber, be provided with the first capsule in described material feeding mouth, described the first capsule is fixedly installed on the first mounting rod, described the first mounting rod is fixedly installed on described charging partition wall, be provided with the second capsule in described discharge port, described the second capsule is fixedly installed on the second mounting rod, described the second mounting rod is fixedly installed on the discharging partition wall, described the first mounting rod has the first center hole, described the first center hole is communicated with the blister cavities of described the first capsule by the first through hole, described charging partition wall is provided with the first-class circulation passage that is communicated with described the first center hole, described the second mounting rod has the second center hole, described the second center hole is communicated with the blister cavities of described the second capsule by the second through hole, described discharging partition wall is provided with the second circulation passage that is communicated with described the second center hole, described second circulation passage is by the described first-class circulation passage of pipeline connection, all be filled with circulation medium in described the first capsule and the second capsule, described pipeline is provided with two-way pump.
In described self-priming pump of the present invention, as a kind of improvement, described material feeding mouth has a charging conical surface corresponding with described the first capsule position, and the small end of the described charging conical surface is away from described material chamber; Described discharge port has a discharging conical surface corresponding with described the second capsule position, and the small end of the described discharging conical surface is near described material chamber.
In described self-priming pump of the present invention, as a kind of improvement, it is uncovered that described the first capsule has two the first capsules that are oppositely arranged, be interval with two the first interior platens on described the first mounting rod, two the described first interior platens all are fixedly installed on described the first mounting rod, the equal correspondence of each the described first interior platen is provided with one first external pressure plate, cramping is between the described first interior platen and the first external pressure plate of correspondence respectively at two uncovered edges of described the first capsule, and described the first through hole is between two the described first interior platens; It is uncovered that described the second capsule has two the second capsules that are oppositely arranged, be interval with two the second interior platens on described the second mounting rod, two the described second interior platens all are fixedly installed on described the second mounting rod, the equal correspondence of each the described second interior platen is provided with one second external pressure plate, cramping is between the described second interior platen and the second external pressure plate of correspondence respectively at two uncovered edges of described the second capsule, and described the second through hole is between two the described second interior platens.
In described self-priming pump of the present invention, as further improvement, described pipeline is provided with circulation medium and supplements mouth.
In described self-priming pump of the present invention, as further improvement, described power plant comprise the cam driven by reducing motor, between described plunger and the pump housing, are provided with Returnning spring, under the active force of described Returnning spring, the end of described plunger relies on the side face of described cam.
After having adopted technique scheme, the present invention has obtained the beneficial effect of multiple excellence, for example:
1. owing at material feeding mouth and discharge port place, being provided with respectively the first capsule and the second capsule, utilize the variation of circulation medium volume in capsule to make capsule generation elastic strain, form sealing, sealing effect is greatly improved, while having impurity to retain on sealing surface, the deformation of capsule can seal around impurity, plays equally sealing effect, and more traditional hard sealing effect is increased dramatically; Simultaneously, because the volume of circulation medium in capsule constantly changes, make capsule compare with traditional spool, volume is reduced, increase circulation area, thereby made the flow in the self-priming pump unit time improve, improved the pumping efficiency of self-priming pump.
2. because capsule is fixedly mounted on mounting rod by interior platen and external pressure plate, make the dismounting of capsule and safeguard convenient.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is embodiment of the present invention suction phase diagram;
Fig. 2 is the phase diagram of embodiment of the present invention discharge;
Fig. 3 is the installation diagram of the first capsule and the first mounting rod in the embodiment of the present invention.
Wherein, in Fig. 1-3, each number designation refer to respectively following concrete meaning, element and/parts.
In figure: 1, the pump housing, 2, the material chamber, 3, material feeding mouth, 4, discharge port, 5, charging partition wall, 6, feeding-passage, the 7, first mounting rod, the 8, first capsule, 9, discharging partition wall, 10, tapping channel, the 11, second mounting rod, the 12, second capsule, 13, pipeline, 14, two-way pump, 15, plunger, 16, cam, 17, Returnning spring, the 18, first center hole, 19, the first through hole, the 20, first interior platen, the 21, first external pressure plate.
Embodiment
Below in conjunction with accompanying drawing; the present invention is described in detail by specific embodiment; but the purposes of these property enumerated mode of executions and purpose only are used for enumerating the present invention; not real protection scope of the present invention is formed to any type of any restriction, more non-protection scope of the present invention is confined to this.
As shown in Fig. 1 and Fig. 3 are common, a kind of self-priming pump for jetting machine, mainly comprise the pump housing 1, the pump housing 1 is provided with material feeding mouth 3 and discharge port 4, the pump housing 1 is provided with the material chamber 2 that all is communicated with material feeding mouth 3 and discharge port 4, material is slidably fitted with the plunger 15 driven by power plant in chamber 2, material feeding mouth 3 is positioned on the axis of plunger 15, the footpath that discharge port 4 is positioned at plunger 15 makes progress, the pump housing 1 is provided with charging partition wall 5 and discharging partition wall 9, charging partition wall 5 is provided with the feeding-passage 6 that is communicated with material feeding mouth 3 and material chamber 2, discharging partition wall 9 is provided with the tapping channel 10 that is communicated with discharge port 4 and material chamber 2, be provided with the first capsule 8 in material feeding mouth 3, the first capsule 8 is fixedly installed on the first mounting rod 7, the first mounting rod 7 is fixedly installed on charging partition wall 5, be provided with the second capsule 12 in discharge port 4, the second capsule 12 is fixedly installed on the second mounting rod 11, the second mounting rod 11 is fixedly installed on discharging partition wall 9, the first mounting rod 7 has the first center hole 18, the first center hole 18 is communicated with the blister cavities of the first capsule 8 by the first through hole 19, charging partition wall 5 is provided with the first-class circulation passage that is communicated with the first center hole 18, the second mounting rod 11 has the second center hole, the second center hole is communicated with the blister cavities of the second capsule 12 by the second through hole, discharging partition wall 9 is provided with the second circulation passage that is communicated with the second center hole, the second circulation passage is communicated with first-class circulation passage by pipeline 13, the interior circulation medium that all is filled with of the first capsule 8 and the second capsule 12, circulation medium is selected water or hydraulic oil usually, in order to raise the efficiency, pipeline 13 is provided with two-way pump 14, can improve the flow in the circulation medium unit time, make the circulation medium in the first capsule 8 and the second capsule 12 circulate fast, usually two-way pump 14 is preferably double-direction gearpump.In order to meet the different pressures sealing, pipeline 13 is provided with circulation medium and supplements mouth, can supplement in time circulation medium, changes the internal pressure of the first capsule 8 and the second capsule 12.
Power plant comprise the cam 16 driven by reducing motor, between plunger 15 and the pump housing 1, are provided with Returnning spring 17, and Returnning spring 17 is preferably stage clip, and under the active force of Returnning spring 17, the end of plunger 15 relies on the side face of cam 16.Chinese utility model patent CN201650707U discloses a kind of self-sucking pump used for high-pressure washing machine, its power plant are motor-driven end cam, be provided with bearing on end cam, plunger leans at bearing surface, the stroke of this structure plunger is little, and the end cam surface configuration to be subject to the constraint of bearing very large, no matter there are several variations on the end cam surface, after bearing is installed, the motion of plunger is only a kind of rhythm, can not change its movement rhythm along with the multiple variation of end cam, therefore present patent application is by cam 16 side face drive plunger 15, can change the movement rhythm of plunger 15, quick discharge for example, suction or discharge at a slow speed at a slow speed, quick suction etc.
Material feeding mouth 3 has a charging conical surface corresponding with the first capsule 8 positions, and the small end of the charging conical surface is away from material chamber 2; Discharge port 4 has a discharging conical surface corresponding with the second capsule 12 positions, and the small end of the discharging conical surface is near material chamber 2.The advantage of design is to have played better sealing effect like this, makes capsule be unlikely to be subject to both sides pressure reduction and leaks.
It is uncovered that the first capsule 8 has two the first capsules that are oppositely arranged, be interval with two the first interior platens 20 on the first mounting rod 7, two the first interior platens 20 all are fixedly installed on the first mounting rod 7, the equal correspondence of each the first interior platen 20 is provided with one first external pressure plate 21, the first interior platen 20 is connected by fastening piece with the first external pressure plate 21, cramping is between the first interior platen 20 and the first external pressure plate 21 of correspondence respectively at two uncovered edges of the first capsule, and the first through hole 19 is between two the first interior platens 20; It is uncovered that the second capsule 12 has two the second capsules that are oppositely arranged, be interval with two the second interior platens on the second mounting rod 11, two the second interior platens all are fixedly installed on the second mounting rod 11, the equal correspondence of each the second interior platen is provided with one second external pressure plate, the second interior platen also is connected by fastening piece with the second external pressure plate, cramping is between the second interior platen and the second external pressure plate of correspondence respectively at two uncovered edges of the second capsule, and the second through hole is between two the second interior platens.
In addition, the inventor is through research and practice, uncovered edge at the first capsule 8 and the second capsule 12 has all designed flange, make the thickness of flange obviously be greater than the wall thickness of the first capsule 8 and the second capsule 12, simultaneously, designed the groove suitable with flange between corresponding interior platen and external pressure plate, can be so that capsule can bear larger pressure and be unlikely to deviate between interior platen and external pressure plate when sealing, the material of the first capsule 8 and the second capsule 12 is preferably nitrile rubber, there is oil resistant, acid resistant alkali, anti-subduing, intensity is high, the characteristics such as long service life.General thinking, thereby capsule and plane contact reach sealing effect, more smooth its sealing effect in plane that is interpreted as capsule is better, the working life of capsule is longer, but, the inventor finds through experiment, when there being impurity (especially granular hard impurity) to adhere in the plane, when capsule and plane contact sealing, impurity can be given capsule one active force, this power effect area is little, in long seal process, destructiveness to capsule is very large, therefore the inventor is provided with some depressions at the outer surface of the first capsule 8 and the second capsule 12, these depressions are convenient to hold impurity, to reduce the destruction of impurity to capsule, extend the working life of capsule, do not affect again the sealing effect of capsule.
The working procedure of self-priming pump of the present invention is as follows:
As shown in Figure 1, during suction, two-way pump 14 is pumped into the circulation medium in the first capsule 8 in the second capsule 12, the second capsule 12 is by the discharging conical surface seal, discharge port 4 sealings, the first capsule 8 volume-diminished, material feeding mouth 3 is opened, if discharging conical surface surface attachment has impurity, the second capsule 12 depressions in the surface hold impurity, to reduce the destruction of impurity to the second capsule 12, reducing motor band moving cam 16 rotates, and under the effect of Returnning spring 17, plunger 15 is to deviating from material feeding mouth 3 direction motions, the interior formation negative pressure in material chamber 2, material just enters material chamber 2 by material feeding mouth 3.
As shown in Figure 2, during discharge, two-way pump 14 is pumped into the circulation medium in the second capsule 12 in the first capsule 8, the first capsule 8 is by the charging conical surface seal, material feeding mouth 3 sealings, the second capsule 12 volume-diminished, discharge port 4 is opened, now, cam 16 rotates, compression reseting spring 17, and plunger 15 is to material feeding mouth 3 direction motions, the pressure of 14 pairs of circulation mediums of two-way pump is greater than the pressure of 15 pairs of materials of plunger, and the interior formation high pressure in material chamber 2 is pumped material by discharge port 4.
Although for for example and the purpose of description, and introduced structure and processing procedure shown in above-mentioned mode of execution of the present invention and accompanying drawing.But these are not detailed descriptions, scope of the present invention can not be confined to this.For a person skilled in the art, can make numerous modifications and variations to above-mentioned mode of execution of the present invention, and these all modifications and/or change all are included in as within claim limited range of the present invention, do not break away from as described in scope and spirit of the present invention that claim was limited.
Claims (5)
1. for the self-priming pump of jetting machine, comprise the pump housing, the described pump housing is provided with material feeding mouth and discharge port, the described pump housing is provided with the material chamber that all is communicated with described material feeding mouth and discharge port, be slidably fitted with the plunger driven by power plant in described material chamber, described material feeding mouth is positioned on the axis of described plunger, the footpath that described discharge port is positioned at described plunger makes progress, it is characterized in that: the described pump housing is provided with charging partition wall and discharging partition wall, described charging partition wall is provided with the feeding-passage that is communicated with described material feeding mouth and material chamber, described discharging partition wall is provided with the tapping channel that is communicated with described discharge port and material chamber, be provided with the first capsule in described material feeding mouth, described the first capsule is fixedly installed on the first mounting rod, described the first mounting rod is fixedly installed on described charging partition wall, be provided with the second capsule in described discharge port, described the second capsule is fixedly installed on the second mounting rod, described the second mounting rod is fixedly installed on the discharging partition wall.Described the first mounting rod has the first center hole, described the first center hole is communicated with the blister cavities of described the first capsule by the first through hole, described charging partition wall is provided with the first-class circulation passage that is communicated with described the first center hole, described the second mounting rod has the second center hole, described the second center hole is communicated with the blister cavities of described the second capsule by the second through hole, described discharging partition wall is provided with the second circulation passage that is communicated with described the second center hole, described second circulation passage is by the described first-class circulation passage of pipeline connection, all be filled with circulation medium in described the first capsule and the second capsule, described pipeline is provided with two-way pump.
2. the self-priming pump for jetting machine as claimed in claim 1, it is characterized in that: described material feeding mouth has a charging conical surface corresponding with described the first capsule position, and the small end of the described charging conical surface is away from described material chamber; Described discharge port has a discharging conical surface corresponding with described the second capsule position, and the small end of the described discharging conical surface is near described material chamber.
3. the self-priming pump for jetting machine as claimed in claim 1 or 2, it is characterized in that: it is uncovered that described the first capsule has two the first capsules that are oppositely arranged, be interval with two the first interior platens on described the first mounting rod, two the described first interior platens all are fixedly installed on described the first mounting rod, the equal correspondence of each the described first interior platen is provided with one first external pressure plate, cramping is between the described first interior platen and the first external pressure plate of correspondence respectively at two uncovered edges of described the first capsule, and described the first through hole is between two the described first interior platens; It is uncovered that described the second capsule has two the second capsules that are oppositely arranged, be interval with two the second interior platens on described the second mounting rod, two the described second interior platens all are fixedly installed on described the second mounting rod, the equal correspondence of each the described second interior platen is provided with one second external pressure plate, cramping is between the described second interior platen and the second external pressure plate of correspondence respectively at two uncovered edges of described the second capsule, and described the second through hole is between two the described second interior platens.
4. the self-priming pump for jetting machine as claimed in claim 3 is characterized in that: described pipeline is provided with circulation medium and supplements mouthful.
5. the described self-priming pump for jetting machine of claim as arbitrary as claim 1 to 4, it is characterized in that: described power plant comprise the cam driven by reducing motor, be provided with Returnning spring between described plunger and the pump housing, under the active force of described Returnning spring, the end of described plunger relies on the side face of described cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310421204.8A CN103437993B (en) | 2013-09-16 | 2013-09-16 | Self-sucking pump for high-pressure cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310421204.8A CN103437993B (en) | 2013-09-16 | 2013-09-16 | Self-sucking pump for high-pressure cleaner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103437993A true CN103437993A (en) | 2013-12-11 |
| CN103437993B CN103437993B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310421204.8A Active CN103437993B (en) | 2013-09-16 | 2013-09-16 | Self-sucking pump for high-pressure cleaner |
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| Country | Link |
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| CN (1) | CN103437993B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653426A (en) * | 2015-01-20 | 2015-05-27 | 天津农学院 | High-precision plunger type trace sampling pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19735371A1 (en) * | 1997-08-14 | 1999-02-18 | Siemens Ag | Fuel pump with pump cylinder |
| DE19963480A1 (en) * | 1999-12-28 | 2001-07-05 | Continental Teves Ag & Co Ohg | Pump with encapsulated discharge valve for brake systems in motor vehicles ha capsule formed by sheet metal cup and cover connected by beading, and enclosing closure spring |
| WO2006034898A1 (en) * | 2004-09-28 | 2006-04-06 | Robert Bosch Gmbh | Device for filling doses of a liquid |
| CN201363245Y (en) * | 2008-12-31 | 2009-12-16 | 夏建运 | Piston self-sucking pump |
| CN201650707U (en) * | 2010-03-05 | 2010-11-24 | 宁波富斯乐机械制造有限公司 | Self-sucking pump used for high-pressure washing machine |
| CN201679672U (en) * | 2010-05-21 | 2010-12-22 | 杜堂玉 | High-strength plunger self-priming pump |
-
2013
- 2013-09-16 CN CN201310421204.8A patent/CN103437993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19735371A1 (en) * | 1997-08-14 | 1999-02-18 | Siemens Ag | Fuel pump with pump cylinder |
| DE19963480A1 (en) * | 1999-12-28 | 2001-07-05 | Continental Teves Ag & Co Ohg | Pump with encapsulated discharge valve for brake systems in motor vehicles ha capsule formed by sheet metal cup and cover connected by beading, and enclosing closure spring |
| WO2006034898A1 (en) * | 2004-09-28 | 2006-04-06 | Robert Bosch Gmbh | Device for filling doses of a liquid |
| CN201363245Y (en) * | 2008-12-31 | 2009-12-16 | 夏建运 | Piston self-sucking pump |
| CN201650707U (en) * | 2010-03-05 | 2010-11-24 | 宁波富斯乐机械制造有限公司 | Self-sucking pump used for high-pressure washing machine |
| CN201679672U (en) * | 2010-05-21 | 2010-12-22 | 杜堂玉 | High-strength plunger self-priming pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653426A (en) * | 2015-01-20 | 2015-05-27 | 天津农学院 | High-precision plunger type trace sampling pump |
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| Publication number | Publication date |
|---|---|
| CN103437993B (en) | 2015-07-15 |
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Denomination of invention: A self-priming pump for high-pressure cleaning machines Effective date of registration: 20231130 Granted publication date: 20150715 Pledgee: Ningbo Yinzhou Rural Commercial Bank Co.,Ltd. Hengxi Sub branch Pledgor: NINGBO FUSLE MECHANICAL MANUFACTURING Co.,Ltd. Registration number: Y2023330002846 |
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