CN103861361A - Liquid supply device with sliding conical bearing and capable of promoting liquid supply - Google Patents
Liquid supply device with sliding conical bearing and capable of promoting liquid supply Download PDFInfo
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- CN103861361A CN103861361A CN201410132627.2A CN201410132627A CN103861361A CN 103861361 A CN103861361 A CN 103861361A CN 201410132627 A CN201410132627 A CN 201410132627A CN 103861361 A CN103861361 A CN 103861361A
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- 239000007788 liquid Substances 0.000 title claims abstract description 103
- 230000001737 promoting effect Effects 0.000 title abstract 2
- 239000012535 impurity Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a liquid supply device with a sliding conical bearing and capable of promoting liquid supply. The liquid supply device comprises a pressure air supply device (7), a pressure chamber (8), a pressure supply pipe (9), a liquid supply pipeline (10) and a suction filtering device (20), wherein the pressure air supply device (7) is used for providing pressure for the pressure chamber (8) through the pressure supply pipe (9); the pressure chamber (8) can pressurize the liquid in the pressure chamber (8) and discharge the liquid through the liquid supply pipeline (10); the suction filtering device (20) is arranged at the inside end of the liquid supply pipeline (10) and is used for filtering liquid when the liquid supply pipeline (10) sucks liquid from the pressure chamber (8); the outside end of the liquid supply pipeline (10) is used for allowing the discharged liquid to flow; a liquid inlet (81) is formed in the top of the pressure chamber (8).
Description
Technical field
The present invention relates to a kind of device that utilizes air pressure to provide liquid, relate more particularly to a kind of air pressure of utilizing that can automatically remove floccule and provide the device of liquid.
Background technology
The device that utilizes air pressure to provide liquid is widely used a kind of equipment that sprays liquid in agricultural, greenery patches maintenance and industry.Utilize the water quality of use that air pressure provides the device of liquid according to the difference at water source and difference, therefore, for the device that prevents from utilizing air pressure to provide liquid is normally moved by the impurity effect in liquid, often there is filtration at the end that utilizes air pressure to provide the liquid sucking tube road of the device of liquid.
But, due to the suction that the device that utilizes air pressure to provide liquid forms in the time moving, a large amount of impurity absorption in the easy environs that liquid is provided to pipe end; And just resting on liquid, the impurity of some floccule provides the filter structure place of pipe end; In the course of time, these cotton-shaped impurity are more long-pending thicker, and the liquid properties of entering that can provide pipeline to liquid exerts an influence, and impact simultaneously utilize air pressure provide liquid device go out amount of liquid, and then waste power, impact is used; More seriously, can cause the actuating unit of the device that utilizes air pressure to provide liquid to occur overload and cause equipment Risk.
The general dependence of removing of the cotton-shaped impurity of filter of the more existing input duct end that utilizes the device that air pressure provides liquid is manually carried out.Because the existing device water quality of utilizing air pressure to provide liquid has requirement, utilize the device that air pressure provides liquid also can from drawing liquid body fluid body source, shift out and clean termly even applied under the more occasion of impurity, thereby this problem still can be born.But, in some cases, the maintenance of for example urban lawn, the device that utilizes air pressure to provide liquid need to flow from some reserve liquid body source draw liquids, these reserve liquid body sources are for example the even undressed rainwash water of rainwater, middle water reclaiming, and these appliance arrangements that utilize air pressure to provide liquid do not have the condition of regularly carrying out manual maintenance, therefore the normal operation that, provides the device of liquid with utility air pressure for the removing of impurity under this situation just has active demand.
Summary of the invention
The object of this invention is to provide a kind of air pressure of utilizing of utilizing air pressure to provide the cotton-shaped impurity screening of device feed tube end of liquid of can automatically removing and provide the apparatus system of liquid, it does not need the power source that provides independent, and automatically according to specific needs cotton-shaped impurity is removed, or prevent adhering to of cotton-shaped impurity.
The technical solution used in the present invention is as follows:
A kind of have sliding conical bearing and provide the device of liquid with the air pressure of utilizing of radially extending connecting portion of elongate slot radially, comprise pressure air feedway, pressure chamber, pressure feed pipe, liquid provides pipeline and draws filter, wherein, described pressure air feedway is for providing pressure by pressure feed pipe for pressure chamber, described pressure chamber can pressurize and provide pipeline by liquid the liquid in pressure chamber and send, the described medial extremity that draws filter and be arranged on liquid and provide pipeline, for described liquid being filtered in the time that described liquid provides pipeline from pressure chamber's draw liquid, liquid provides the outboard end of pipeline and sends liquid for flowing, the top of described pressure chamber is provided with liquid inlet.
The described filter that draws comprises that atmospheric communicating pipe, pressure enter pipe and magnetic valve, the first end of described atmospheric communicating pipe stretches out outside pressure chamber and is communicated with atmosphere, the first end that described pressure enters pipe in pressure chamber for being communicated with the air of the supercharging in pressure chamber.
The described filter that draws also comprises rotatable parts and fixed part, wherein, fixed part comprises cylindrical drum portion and fixed mount portion, the upper end sealing of cylindrical drum portion, underpart opening, fixed mount portion is the annular frame with space, and the inside portion of described fixed mount portion is fixedly connected with the periphery of the upper end of cylindrical drum portion, and the outside portion of fixed mount portion is fixedly connected with the described medial extremity that liquid provides pipeline, thus, fixed part is fixed to liquid and provides pipeline.
Rotatable parts comprise central shaft, bottom lock disk, radially extend connecting portion and part is stirred in rotation, the upper end of central shaft is tightly connected rotationally by the upper end of conical bearing and described cylindrical drum portion, and the upper end of central shaft is also provided with locking nut, described locking nut can press described conical bearing by the upwards tractive locking of described central shaft; The lower end of described central shaft is fixedly connected with the center of bottom lock disk, the excircle position of the upper surface of described bottom lock disk is sealed and contacts rotationally with the bottom of cylindrical drum portion by sealing strip, thus, described bottom lock disk and described cylindrical drum portion can surround and form the chamber with sealing; The periphery of the outer circumference portion of described bottom lock disk is fixedly connected with the inner side of radially extending connecting portion, the lower end that part is stirred with rotation in described outside of radially extending connecting portion is fixedly connected with, the upper end that part is stirred in described rotation is connected by thrust bearing with the described medial extremity that liquid provides pipeline, the outside that described rotation is stirred the peripheral of part and radially extended connecting portion is provided with stirs bar, described in stir bar and can avoid the cotton-shaped impurity in liquid to adhere in rotating; Described rotation is stirred part, is radially extended in connecting portion and fixed mount portion and be provided with the passage flowing through for liquid; Wherein, described conical bearing comprises outer sleeve and inner sleeve, and the outer surface of described outer sleeve is cone shape, inner surface is also cone shape, the outer surface of described inner sleeve is cone shape, and inner surface is cylindrical shape, and described cylindrical shape is around forming cylindrical hole for passing for central shaft; Between the outer surface of the inner surface of the cone shape of described outer sleeve and the cone shape of described inner sleeve, form the slidingsurface with lubricity; Radially extending connecting portion is toroidal, and is evenly distributed with in a circumferential direction elongate slot, as the passage that supplies water and flow through; Two relative edges, long limit of described elongate slot are the radial direction of pointing to the center of circle.
Described central shaft is fixedly installed two rotating vanes relative on diameter along its axial direction, and the inside of described cylindrical drum portion is fixedly installed two fixed blades relative on diameter on its longitudinal direction, central shaft is arranged between described two fixed blades and is tightly connected rotationally with it, thus, the inner space of described cylindrical drum portion is divided into four sealing sectors by two fixed blades and two rotating vanes.
Pressure enters the second end of pipe and the first entrance of magnetic valve is communicated with, the second entrance of magnetic valve is connected with the second end of described atmospheric communicating pipe, the first outlet of magnetic valve is connected with the first export pipeline, the first export pipeline is divided into the first outlet branch road A and the first outlet branch road B, the first outlet branch road A and the first outlet branch road B respectively with in described four sealing sectors on diameter relative two sectors be communicated with; The second outlet of magnetic valve is connected with the second export pipeline, the second export pipeline is divided into the second outlet branch road A and the second outlet branch road B, the second outlet branch road A and the second outlet branch road B respectively with in described four sealing sectors on diameter relative two other sector be communicated with; Magnetic valve comprises two duties, and under the first duty, the first entrance is communicated with the first outlet, and the second entrance is communicated with the second outlet; Under the second duty, the first entrance is communicated with the second outlet, and the second entrance is communicated with the first outlet; Magnetic valve can controllably periodically conversion under described two duties.
In the time of work, described pressure air feedway makes the air pressurized in pressure chamber, in the time that needs prevent that cotton-shaped impurity from adhering to, electromagnetic valve work, when in the first duty, the air of supercharging enters pipe by pressure and is fed to two sectors relative on diameter, and two other relative sector is communicated with atmospheric communicating pipe on diameter, thereby two rotating vanes are rotated with first direction; In the time that magnetic valve is transformed into the second duty, two sectors relative on diameter are communicated with atmospheric communicating pipe, the air of supercharging enters pipe by pressure and is fed to described two other sector relative on diameter, thereby two rotating vanes are rotated with second direction; Thus, central shaft can drive described rotation to stir part and radially extend periodically reciprocating rotation of connecting portion, thereby preventing that cotton-shaped impurity is attached to draws on filter.
By above-mentioned technical scheme, the air pressure producing while operation due to the device that has utilized air pressure to provide liquid, without Power Component is provided in addition, has saved equipment cost and maintenance cost.Meanwhile, owing to having used magnetic valve to carry out periodicity commutation, can effectively realize oscillatory type and move back and forth, effectively cotton-shaped impurity is prevented and removed, its control simultaneously flexibly, can directly be closed it under the situation without using, and can not affect the normal operation of Whole Equipment.The connecting pipeline of four sectors is arranged on to the position near fixed blade, can at utmost guarantees the activity space of rotating vane, can, for the motion of rotating vane provides a kind of physics spacing, guarantee equipment reliability of operation simultaneously.The described band radially radially extension connecting portion of elongate slot is convenient to liquid and is seen through, and the conical bearing better tightness of sliding.
Brief description of the drawings
Fig. 1 is the schematic diagram that utilizes air pressure to provide the general structure of the apparatus system of liquid of the present invention;
Fig. 2 is longitudinal schematic diagram that the liquid that utilizes air pressure to provide the apparatus system of liquid of the present invention provides the general structure of pipe end filter.
Fig. 3 is the end view that the liquid that utilizes air pressure to provide the apparatus system of liquid of the present invention provides pipe end filter, and it shows the power operation logic of filter.
Fig. 4 is the generalized section of sliding conical bearing.
Fig. 5 is the structural representation that radially extends connecting portion, shows elongate slot radially.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-5, the present invention is described in detail.
A kind of there is sliding conical bearing and be beneficial to the liquid that liquid provides provide device, comprise pressure air feedway 7, pressure chamber 8, pressure feed pipe 9, liquid provides pipeline 10 and draws filter 20, wherein, described pressure air feedway 7 is for providing pressure by pressure feed pipe 9 for pressure chamber 8, described pressure chamber 8 can pressurize and provide pipeline 10 by liquid the liquid in pressure chamber 8 and send, the described medial extremity that draws filter 20 and be arranged on liquid and provide pipeline 10, for described liquid being filtered in the time that described liquid provides pipeline 10 from pressure chamber's 8 draw liquid, liquid provides the outboard end of pipeline 10 and sends liquid for flowing, the top of described pressure chamber 8 is provided with liquid inlet 81.
The described filter 20 that draws comprises that atmospheric communicating pipe 5, pressure enter pipe 4 and magnetic valve 6, the first end of described atmospheric communicating pipe 5 stretches out that pressure chamber 8 is outer to be communicated with atmosphere, described pressure enter manage 4 first end in pressure chamber 8 for being communicated with the air of the supercharging in pressure chamber 8.
The described filter 20 that draws also comprises rotatable parts 2 and fixed part 1, wherein, fixed part 1 comprises cylindrical drum portion 102 and fixed mount portion 101, the upper end sealing of cylindrical drum portion 102, underpart opening, fixed mount portion 101 is for having the annular frame in space, the inside portion of described fixed mount portion 101 is fixedly connected with the periphery of the upper end of cylindrical drum portion 102, and the outside portion of fixed mount portion 101 is fixedly connected with the described medial extremity that liquid provides pipeline 10, thus, fixed part 1 is fixed to liquid and provides pipeline 10.
Described central shaft 21 is fixedly installed two rotating vanes 22 relative on diameter along its axial direction, and the inside of described cylindrical drum portion 102 is fixedly installed two fixed blades 26 relative on diameter on its longitudinal direction, central shaft 21 is arranged between described two fixed blades 26 and is tightly connected rotationally with it, thus, the inner space of described cylindrical drum portion 102 is divided into four sealing sectors by two fixed blades 26 and two rotating vanes 22.
The second end 40 that pressure enters pipe 4 is communicated with the first entrance of magnetic valve 6, the second entrance of magnetic valve 6 is connected with the second end 50 of described atmospheric communicating pipe 5, the first outlet of magnetic valve 6 is connected with the first export pipeline 41, the first export pipeline 41 is divided into the first outlet branch road A43 and the first outlet branch road B42, the first outlet branch road A43 and the first outlet branch road B42 respectively with in described four sealing sectors on diameter relative two sectors be communicated with; The second outlet of magnetic valve 6 is connected with the second export pipeline 51, the second export pipeline 51 is divided into the second outlet branch road A53 and the second outlet branch road B52, the second outlet branch road A53 and the second outlet branch road B52 respectively with in described four sealing sectors on diameter relative two other sector be communicated with; Magnetic valve 6 comprises two duties, and under the first duty, the first entrance is communicated with the first outlet, and the second entrance is communicated with the second outlet; Under the second duty, the first entrance is communicated with the second outlet, and the second entrance is communicated with the first outlet; Magnetic valve 6 can controllably periodically conversion under described two duties.
In the time of work, described pressure air feedway 7 makes the air pressurized in pressure chamber 8, in the time that needs prevent that cotton-shaped impurity from adhering to, magnetic valve 6 is worked, when in the first duty, the air of supercharging enters pipe 4 by pressure and is fed to two sectors relative on diameter, and two other relative sector is communicated with atmospheric communicating pipe 5 on diameter, thereby two rotating vanes 22 are rotated with first direction; In the time that magnetic valve 6 is transformed into the second duty, two sectors relative on diameter are communicated with atmospheric communicating pipe 5, the air of supercharging enters pipe 4 by pressure and is fed to described two other sector relative on diameter, thereby two rotating vanes 22 are rotated with second direction; Thus, central shaft 21 can drive described rotation to stir part 23 and radially extend periodically reciprocating rotations of connecting portion 25, thereby preventing that cotton-shaped impurity is attached to draws on filter 20.
Claims (1)
1. one kind has sliding conical bearing and provides the device of liquid with the air pressure of utilizing of radially extending connecting portion of elongate slot radially, comprise pressure air feedway (7), pressure chamber (8), pressure feed pipe (9), liquid provides pipeline (10) and draws filter (20), wherein, described pressure air feedway (7) is for providing pressure by pressure feed pipe (9) for pressure chamber (8), described pressure chamber (8) can pressurize and provide pipeline (10) by liquid the liquid in pressure chamber (8) and send, the described medial extremity that draws filter (20) and be arranged on liquid and provide pipeline (10), for described liquid being filtered in the time that described liquid provides pipeline (10) from pressure chamber (8) draw liquid, liquid provides the outboard end of pipeline (10) and sends liquid for flowing, the top of described pressure chamber (8) is provided with liquid inlet (81), it is characterized in that,
The described filter (20) that draws comprises that atmospheric communicating pipe (5), pressure enter pipe (4) and magnetic valve (6), the first end of described atmospheric communicating pipe (5) stretches out outside pressure chamber (8) and is communicated with atmosphere, the first end that described pressure enters pipe (4) in pressure chamber (8) for being communicated with the air of the supercharging in pressure chamber (8)
The described filter (20) that draws also comprises rotatable parts (2) and fixed part (1), wherein, fixed part (1) comprises cylindrical drum portion (102) and fixed mount portion (101), the upper end sealing of cylindrical drum portion (102), underpart opening, fixed mount portion (101) is for having the annular frame in space, the inside portion of described fixed mount portion (101) is fixedly connected with the periphery of the upper end of cylindrical drum portion (102), and the outside portion of fixed mount portion (101) is fixedly connected with the described medial extremity that liquid provides pipeline (10), thus, fixed part (1) is fixed to liquid and provides pipeline (10),
Rotatable parts (2) comprise central shaft (21), bottom lock disk (24), radially extend connecting portion (25) and rotation stirs part (23), the upper end of central shaft (21) is tightly connected rotationally by conical bearing (121) and the upper end of described cylindrical drum portion (102), and the upper end of central shaft (21) is also provided with locking nut (122), described locking nut (122) can press described conical bearing (121) by upwards tractive locking of described central shaft (21), the lower end of described central shaft (21) is fixedly connected with the center of bottom lock disk (24), the excircle position of the upper surface of described bottom lock disk (24) is sealed and contacts rotationally with the bottom of cylindrical drum portion (102) by sealing strip (120), thus, described bottom lock disk (24) can surround and form the chamber with sealing with described cylindrical drum portion (102), the periphery of the outer circumference portion of described bottom lock disk (24) is fixedly connected with the inner side of radially extending connecting portion (25), the lower end that part (23) is stirred with rotation in described outside of radially extending connecting portion (25) is fixedly connected with, the upper end that part (23) is stirred in described rotation is connected by thrust bearing (29) with the described medial extremity that liquid provides pipeline (10), the outside that described rotation is stirred the peripheral of part (23) and radially extended connecting portion (25) is provided with stirs bar, the described bar of stirring can avoid the cotton-shaped impurity in liquid to adhere in rotating, described rotation is stirred part (23), is radially extended in connecting portion (25) and fixed mount portion (101) and be provided with the passage flowing through for liquid, wherein, described conical bearing (121) comprises outer sleeve (1211) and inner sleeve (1213), the outer surface of described outer sleeve (1211) is cone shape, inner surface is also cone shape, the outer surface of described inner sleeve (1213) is cone shape, inner surface is cylindrical shape, and described cylindrical shape is around forming cylindrical hole (1212) for passing for central shaft (21), between the outer surface of the cone shape of the inner surface of the cone shape of described outer sleeve (1211) and described inner sleeve (1213), form the slidingsurface with lubricity, radially extending connecting portion (25) is toroidal, and is evenly distributed with in a circumferential direction elongate slot (251), as the passage that supplies water and flow through, two relative edges, long limit of described elongate slot are the radial direction of pointing to the center of circle,
Described central shaft (21) is fixedly installed two rotating vanes (22) relative on diameter along its axial direction, and the inside of described cylindrical drum portion (102) is fixedly installed two fixed blades (26) relative on diameter on its longitudinal direction, central shaft (21) is arranged between described two fixed blades (26) and with it and is tightly connected rotationally, thus, the inner space of described cylindrical drum portion (102) is divided into four sealing sectors by two fixed blades (26) and two rotating vanes (22)
The second end (40) that pressure enters pipe (4) is communicated with the first entrance of magnetic valve (6), the second entrance of magnetic valve (6) is connected with second end (50) of described atmospheric communicating pipe (5), the first outlet of magnetic valve (6) is connected with the first export pipeline (41), the first export pipeline (41) is divided into the first outlet branch road A(43) and the first outlet branch road B(42), the first outlet branch road A(43) and the first outlet branch road B(42) respectively with relative two sectors connections on diameter in described four sealing sectors; The second outlet of magnetic valve (6) is connected with the second export pipeline (51), the second export pipeline (51) is divided into the second outlet branch road A(53) and the second outlet branch road B(52), the second outlet branch road A(53) and the second outlet branch road B(52) respectively with relative two other sector connection on diameter in described four sealing sectors; Magnetic valve (6) comprises two duties, and under the first duty, the first entrance is communicated with the first outlet, and the second entrance is communicated with the second outlet; Under the second duty, the first entrance is communicated with the second outlet, and the second entrance is communicated with the first outlet; Magnetic valve (6) can controllably periodically be changed under described two duties;
In the time of work, described pressure air feedway (7) makes the air pressurized in pressure chamber (8), in the time that needs prevent that cotton-shaped impurity from adhering to, magnetic valve (6) work, when in the first duty, the air of supercharging enters pipe (4) by pressure and is fed to two sectors relative on diameter, and two other relative sector is communicated with atmospheric communicating pipe (5) on diameter, thereby two rotating vanes (22) are rotated with first direction; In the time that magnetic valve (6) is transformed into the second duty, two sectors relative on diameter are communicated with atmospheric communicating pipe (5), the air of supercharging enters pipe (4) by pressure and is fed to described two other sector relative on diameter, thereby two rotating vanes (22) are rotated with second direction; Thus, central shaft (21) can drive described rotation stir part (23) and radially extend connecting portion (25) periodicity reciprocating rotation, thereby preventing that cotton-shaped impurity is attached to draws on filter (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132627.2A CN103861361B (en) | 2014-04-03 | 2014-04-03 | There is sliding conical bearing and be beneficial to the liquid that liquid provides and provide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132627.2A CN103861361B (en) | 2014-04-03 | 2014-04-03 | There is sliding conical bearing and be beneficial to the liquid that liquid provides and provide device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103861361A true CN103861361A (en) | 2014-06-18 |
| CN103861361B CN103861361B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410132627.2A Expired - Fee Related CN103861361B (en) | 2014-04-03 | 2014-04-03 | There is sliding conical bearing and be beneficial to the liquid that liquid provides and provide device |
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| Country | Link |
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| CN (1) | CN103861361B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132043A (en) * | 2008-07-10 | 2011-07-20 | 温德富尔·米勒斯有限公司 | Generation and use of high pressure air |
| JP2012087832A (en) * | 2010-10-15 | 2012-05-10 | Tlv Co Ltd | Liquid pumping device |
| JP2013130142A (en) * | 2011-12-22 | 2013-07-04 | Tlv Co Ltd | Liquid pressure feed device |
| CN203108310U (en) * | 2012-08-09 | 2013-08-07 | 石河子天露节水设备有限责任公司 | Automatic back-washing agricultural irrigation filter |
| CN103394219A (en) * | 2013-08-07 | 2013-11-20 | 合肥通用机械研究院 | Energy-saving emission-reducing self-cleaning filter |
-
2014
- 2014-04-03 CN CN201410132627.2A patent/CN103861361B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132043A (en) * | 2008-07-10 | 2011-07-20 | 温德富尔·米勒斯有限公司 | Generation and use of high pressure air |
| JP2012087832A (en) * | 2010-10-15 | 2012-05-10 | Tlv Co Ltd | Liquid pumping device |
| JP2013130142A (en) * | 2011-12-22 | 2013-07-04 | Tlv Co Ltd | Liquid pressure feed device |
| CN203108310U (en) * | 2012-08-09 | 2013-08-07 | 石河子天露节水设备有限责任公司 | Automatic back-washing agricultural irrigation filter |
| CN103394219A (en) * | 2013-08-07 | 2013-11-20 | 合肥通用机械研究院 | Energy-saving emission-reducing self-cleaning filter |
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| CN103861361B (en) | 2015-08-19 |
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Effective date of registration: 20151201 Address after: 225200, Jiangsu Yangzhou District, Jiangdu City Bridge Town Industrial Park Patentee after: Jiangsu Huahao Marine Electrical Appliance Co., Ltd. Address before: Huan East Street Zhejiang Daikin village 311899 city of Shaoxing province Zhuji City, No. 186 Patentee before: Wu Gang |
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