CN111502983A - Self-sealing water device for pump - Google Patents
Self-sealing water device for pump Download PDFInfo
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- CN111502983A CN111502983A CN202010331772.9A CN202010331772A CN111502983A CN 111502983 A CN111502983 A CN 111502983A CN 202010331772 A CN202010331772 A CN 202010331772A CN 111502983 A CN111502983 A CN 111502983A
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- pump
- sealing
- water
- mechanical seal
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a self-sealing water device of a pump, which comprises a pump body, a machine sealing water inlet and a sealing water pipeline, wherein a container type machine sealing box is fixed on the right side of the pump body, a machine sealing water intake is arranged above the machine sealing water inlet, a heat exchanger is connected on the right side of the sealing water pipeline, the sealing water intake pipeline is arranged above the heat exchanger, and an anticorrosive coating is arranged on the outer surface of the pump body. The self-sealing water device for the pump is arranged on a pump body through the integrated type mechanical seal box, the integrated type mechanical seal box is provided with a mechanical seal water inlet and a mechanical seal water intake, water at the mechanical seal water inlet comes from the heat exchanger, the heat exchanger uses circulating water for cooling, the mechanical seal water intake is closed and isolated by a valve, sealing water is taken from a check valve secondary line pipeline of a pump outlet pipeline, and the sealing water enters the integrated type mechanical seal box to seal a rotating bearing of the pump.
Description
Technical Field
The invention relates to the field of coal chemical industry and power generation production equipment, in particular to a self-sealing water device of a pump.
Background
According to the requirements of coal chemical industry and power generation technology, the space furnace pulverized coal gasification furnace adopts a closed coil pipe water-cooled wall radiation chamber structure, the circulating water of a boiler is pressurized and sent into a coil pipe of a water-cooled wall of the gasification furnace through a medium-pressure boiler circulating water pump, the coil pipe is divided into three parts, namely a slag notch coil pipe, a top coil pipe and a main coil pipe, the coil pipe adopts a four-in four-out structure, so that the uniform distribution of tube pass flow resistance can be ensured, the large-flow forced water circulation in the coil pipe of the water-cooled wall is maintained, water flowing in the coil pipe absorbs the gasification reaction heat in the furnace, the rear part is vaporized, a steam and water mixture generated by the radiation heat of the gasification furnace enters a medium-pressure steam drum steam to carry out steam-liquid separation in the medium-pressure steam drum, saturated.
Three medium pressure boiler water circulating pumps are designed in a space furnace device, two normal medium pressure boiler water circulating pumps are provided, the outlet of the standby pump keeps a certain opening degree, the standby pump can start the supplementary flow in time when the operation pump fails and stops operation, the safe operation of a water wall of a gasification furnace is ensured, the medium pressure boiler water circulating pump belongs to a centrifugal pump, a container type machine seal box is adopted, a water inlet and a water inlet of sealing water are arranged on the container type machine seal box, namely, water is taken from the container type machine seal box, cooled by a heat exchanger and then enters the container type machine seal box to be used as sealing water for sealing, when the machine pump normally operates, the sealing water can keep flowing effectively, the stable and effective operation of the machine seal is maintained, when the machine pump is standby, the sealing water can hardly flow, the machine seal can be damaged after long-time standby, the machine seal is replaced about 6 months by the machine pump which normally operates, and the machine seal is replaced, medium-pressure boiler circulating water pump system belongs to high temperature high-pressure equipment, frequently overhauls when maintenance cost is high, has also increased safe risk, and frequently arrives the pump and also can influence the stable operation of device.
Therefore, there is a need to provide a new self-sealing water device for a pump to solve the above-mentioned technical problems.
Disclosure of Invention
The invention provides a self-sealing water device of a pump, which overcomes the defects of the prior art and solves the problems that a standby pump cannot flow water during the unreasonable standby period of water taking in the machine seal, the machine seal is damaged due to uneven heating, the pump cannot be normally used, and the maintenance cost and the maintenance risk are increased.
In order to solve the technical problems, the self-sealing water device for the pump comprises a pump body, a machine sealing water inlet and a sealing water pipeline, wherein a container type machine sealing box is fixed on the right side of the pump body, a bearing is connected on the right side of the container type machine sealing box, an organic sealing water taking port is arranged above the machine sealing water inlet, the machine sealing water inlet is positioned on the outer surface of the container type machine sealing box, a heat exchanger is connected on the right side of the sealing water pipeline, the sealing water pipeline is positioned below the machine sealing water inlet, the sealing water taking pipeline is arranged above the heat exchanger, a secondary pipeline is arranged above the sealing water taking pipeline, a circulating water pipe is connected on the right side of the heat exchanger, an outlet pipeline is arranged above the pump body, a check valve is connected on the right side of the outlet pipeline, and an outlet hand valve is arranged on the right side of the check valve, the external of the check valve is fixed with a connecting mechanism, the external surface of the pump body is provided with an anti-corrosion coating, and the inside of the pump body is provided with a positioning mechanism.
Preferably, be fixed connection between machine pump body and the collection dress formula machine seals the box, and closely laminate between the external surface of machine pump body and the internal surface of anticorrosive coating to the centre of a circle between machine pump body, the collection dress formula machine seals box and the bearing coincides mutually.
Preferably, be fixed connection between machine seal water inlet and the sealed water line, and cartridge type machine seals the box and constitutes circulation structure through the cooperation between machine seal water inlet and the sealed water line and the heat exchanger.
Preferably, the secondary line pipeline is connected with the check valve, and a flow structure is formed between the secondary line pipeline and the heat exchanger through the sealing water taking pipeline.
Preferably, the connecting mechanism comprises a flange plate, a fixing bolt, a sealing sleeve, a clamping block and a positioning groove, the fixing bolt is arranged inside the flange plate, the sealing sleeve is connected to the right side of the flange plate, the clamping block is arranged on the surface of the front end of the sealing sleeve, and the positioning groove is formed in the outer portion of the clamping block.
Preferably, the seal cover is ring structure winding in the external surface of ring flange, and the ring flange passes through the seal cover and constitutes seal structure to the seal cover passes through the cooperation between fixture block and the constant head tank and constitutes detachable construction with the ring flange, and pump outlet pipeline passes through the cooperation between ring flange and the fixing bolt and check valve flange joint moreover.
Preferably, the positioning mechanism comprises a mounting plate, a limiting block, a sliding groove, a threaded hole and an extension plate, the limiting block is fixed on the right side of the mounting plate, the sliding groove is arranged outside the mounting plate, the threaded hole is arranged inside the mounting plate, and the extension plate is installed on the left side of the mounting plate.
Preferably, the screw hole runs through in the mounting panel, and the mounting panel passes through the cooperation between stopper and the sliding tray and constitutes the slip extending structure with the pump body between to the length of the vertical direction of extension board is greater than the length of the vertical direction of mounting panel.
Compared with the related art, the self-sealing water device for the pump provided by the invention has the following beneficial effects:
the invention provides a self-sealing water device of a pump, which has the following beneficial effects:
1. the self-sealing water device for the pump is arranged on a pump body through the integrated type mechanical seal box, the integrated type mechanical seal box is provided with a mechanical seal water inlet and a mechanical seal water intake, water at the mechanical seal water inlet comes from the heat exchanger, the heat exchanger uses circulating water for cooling, the mechanical seal water intake is closed and isolated by a valve, sealing water is taken from a check valve secondary line pipeline of a pump outlet pipeline, and the sealing water enters the integrated type mechanical seal box to seal a rotating bearing of the pump;
2. the self-sealing water device of the pump is adjusted to the position of a pump outlet check valve secondary line pipeline through the water sealing and taking port of the integrated machine sealing box machine, the pump outlet has a certain opening degree during the normal standby period of the standby machine pump, and the pressure at the position of the check valve secondary line pipeline is always higher than the pressure at the inlet of the machine pump, so that the machine sealing water is always in a flowing state, and the machine sealing of the standby machine pump is prevented from being damaged due to uneven heating during the pump pumping period, thereby ensuring the machine pump to be perfectly standby, simultaneously reducing the maintenance cost and the maintenance safety risk;
3. the self-sealing water device for the pump has the advantages that due to the arrangement of the connecting mechanism, the flange connection has the characteristics of convenience in disassembly, high strength and good sealing performance, so that the installation and connection between the check valve and the pump outlet pipeline are more convenient, the labor and the energy consumed in the installation of the device are saved, the sealing sleeve shields the connecting gap between the flange plates, external media are prevented from permeating into the device through the gap between the flange plates, meanwhile, the condition that sealing water in the device leaks through the sealing position between the flange plates is also prevented, and the sealing performance of the device is improved;
4. the self-sealing water device for the pump can fix the pump body at a proper position through the threaded hole on the mounting plate and a proper fixing piece through the arrangement of the positioning mechanism, the fixing piece can be but is not limited to a screw, so that the mounting and the fixing of the pump body are more convenient, when the pump body is not required to be fixed, the mounting plate can be collected into the pump body through the sliding of the limiting block in the sliding groove, and the mounting plate does not occupy extra space when not used.
Drawings
FIG. 1 is a schematic view of a front view structure provided by the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of a pump body according to the present invention;
fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 1 according to the present invention.
Reference numbers in the figures: 1. the mechanical pump body, 2, integrated mechanical seal box, 3, a bearing, 4, mechanical seal water inlet, 5, mechanical seal water intake, 6, sealing water pipeline, 7, heat exchanger, 8, sealing water intake pipeline, 9, auxiliary pipeline, 10, circulating water pipe, 11, pump outlet pipeline, 12, check valve, 13, outlet hand valve, 14, coupling mechanism, 1401, ring flange, 1402, fixing bolt, 1403, seal cover, 1404, fixture block, 1405, positioning groove, 15, anticorrosive coating, 16, positioning mechanism, 1601, mounting panel, 1602, stopper, 1603, sliding groove, 1604, screw hole, 1605, extension board.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic front view structure diagram according to the present invention; FIG. 2 is a schematic view of a partial cross-sectional structure of a pump body according to the present invention; fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 1 according to the present invention. A self-sealing water device for a pump comprises: the mechanical pump comprises a mechanical pump body 1, a cartridge type mechanical seal box 2, a bearing 3, a mechanical seal water inlet 4, a mechanical seal water intake 5, a seal water pipeline 6, a heat exchanger 7, a seal water intake pipeline 8, a secondary pipeline 9, a circulating water pipe 10, a pump outlet pipeline 11, a check valve 12, an outlet hand valve 13, a connecting mechanism 14, a flange 1401, a fixing bolt 1402, a seal cover 1403, a fixture block 1404, a positioning groove 1405, an anti-corrosion coating 15, a positioning mechanism 16, a mounting plate 1601, a limiting block 1602, a sliding groove 1603, a threaded hole 1604 and an extension plate 1605, wherein the cartridge type mechanical seal box 2 is fixed on the right side of the mechanical pump body 1, the bearing 3 is connected on the right side of the cartridge type mechanical seal box 2, the organic seal water intake 5 is arranged above the mechanical seal water inlet 4, the mechanical seal water inlet 4 is positioned on the outer surface of the cartridge type mechanical seal box 2, the heat exchanger 7 is connected on the right side of the seal water pipeline 6 is positioned below the mechanical seal water intake 4, sealed water is installed to the top of heat exchanger 7 and is got water pipeline 8, and sealed water gets water pipeline 8's top and settle and have secondary line pipeline 9, the right side of heat exchanger 7 is connected with circulating pipe 10, pump outlet pipeline 11 is installed to the top of machine pump body 1, and pump outlet pipeline 11's right side is connected with check valve 12, export hand valve 13 is installed on the right side of check valve 12, the external fixation of check valve 12 has coupling mechanism 14, the outside surface of machine pump body 1 settles and has anticorrosive coating 15, and the inside of machine pump body 1 is provided with positioning mechanism 16.
For fixed connection between machine pump body 1 and the cartridge type machine seal box 2, and closely laminate between the external surface of machine pump body 1 and anticorrosive coating 15's the internal surface, and machine pump body 1, centre of a circle between cartridge type machine seal box 2 and the bearing 3 coincides mutually, anticorrosive coating 15 prevents effectively that machine pump body 1 from being corroded when touchhing corrosive substance and producing and breaking, when machine pump body 1 touches corrosive substance, anticorrosive coating 15 can both be isolated with corrosive substance effectively, the surface strength of machine pump body 1 has been promoted, thereby the life of device has been promoted.
The machine seals for fixed connection between water inlet 4 and the sealed water pipeline 6, and the cartridge type machine seals box 2 and constitutes circulation structure through the cooperation between machine seals water inlet 4 and the sealed water pipeline 6 and between heat exchanger 7, and machine seals water intake 5 installation valve and closes the isolation.
Be connected between vice pipeline 9 and the check valve 12, and vice pipeline 9 gets through sealed water and constitutes the circulation structure between water pipe 8 and the heat exchanger 7, check valve 12 has set up vice pipeline 9, and sealed water gets water pipe 8 and connects on vice pipeline 9, sealed water get water pipe 8 and connect in heat exchanger 7, heat exchanger 7 use circulating water 10 in the circulation cold water of circulation carry out cooling, sealed water seals 2 through sealed water pipe 6 entering container type machine seal box behind heat exchanger 7 and seals bearing 3.
The sealing sleeve 1403 is of an annular structure and is wound on the outer surface of the flange 1401, the flange 1401 forms a sealing structure through the sealing sleeve 1403, the sealing sleeve 1403 forms a detachable structure with the flange 1401 through the matching between the clamping block 1404 and the positioning groove 1405, the pump outlet pipeline 11 is in flange connection with the check valve 12 through the matching between the flange 1401 and the fixing bolt 1402, the flange connection has the characteristics of convenience in detachment, high strength and good sealing performance, the installation and connection between the check valve 12 and the pump outlet pipeline 11 are more convenient, the labor and the energy consumed in the installation of the device are saved, the sealing sleeve 1403 shields the gap connected between the flanges 1401, external media are prevented from permeating into the device through the gap between the flanges 1401, and meanwhile, the condition that sealing water inside the device leaks through the sealing position between the flanges 1401 is also prevented, the sealing performance of the device is improved.
The positioning mechanism 16 includes mounting panel 1601, stopper 1602, sliding groove 1603, screw hole 1604 and extension board 1605, and the right side of mounting panel 1601 is fixed with stopper 1602, the outside of mounting panel 1601 is provided with sliding groove 1603, and the inside arrangement of mounting panel 1601 has screw hole 1604, extension board 1605 is installed in the left side of mounting panel 1601.
The screw hole 1604 runs through the mounting panel 1601, and the mounting panel 1601 passes through the cooperation between stopper 1602 and the sliding tray 1603 and constitutes the slip extending structure with between the machine pump body 1, and the length of the vertical direction of extension board 1605 is greater than the length of the vertical direction of mounting panel 1601, can fix the machine pump body 1 in suitable position through screw hole 1604 on the mounting panel 1601 and suitable mounting, the mounting can be but not limited to the screw, make the installation of machine pump body 1 fixed more convenient, when not needing to fix the machine pump body 1, can be with mounting panel 1601 income machine pump body 1 in the slip tray 1603 through the slip of stopper 1602, make the mounting panel 1601 can not occupy extra space when not using.
The working principle of the self-sealing water device of the pump provided by the invention is as follows:
firstly, the device is assembled, then the pump body 1 can be fixed at a proper position through the threaded hole 1604 on the mounting plate 1601 and a proper fixing piece, the fixing piece can be but is not limited to a screw, so that the mounting and fixing of the pump body 1 are more convenient, when the pump body 1 is not required to be fixed, the mounting plate 1601 can be retracted into the pump body 1 through the sliding of the limit block 1602 in the sliding groove 1603, so that the mounting plate 1601 does not occupy extra space when not in use, the flange connection has the characteristics of convenience in disassembly, high strength and good sealing performance, so that the mounting connection between the check valve 12 and the pump outlet pipeline 11 is more convenient, the manpower and energy consumed when the device is mounted are saved, the sealing sleeve 1403 shields the gap between the flanges 1401, and prevents external media from permeating into the device through the gap between the flanges 1401, meanwhile, the condition that sealing water in the device leaks out through the sealing part between the flanges 1401 is also prevented, and the sealing property of the device is improved;
the integrated type mechanical seal box 2 is arranged on a mechanical pump body 1, the integrated type mechanical seal box 2 is provided with a mechanical seal water inlet 4 and a mechanical seal water intake 5, the mechanical seal water inlet 4 is filled with water from a heat exchanger 7, the heat exchanger 7 uses circulating cold water circulating in a circulating water pipe 10 to cool, and the sealing water enters the integrated type mechanical seal box 2 through a sealing water pipe 6 after passing through the heat exchanger 7 to seal the bearing 3. Meanwhile, the maintenance cost and the overhaul safety risk are reduced, the standby pump seal is prevented from being damaged due to uneven heating during the pump use by changing the mechanical seal water intake 5, so that the complete standby of the pump is ensured, the service life of the standby pump seal is greatly prolonged by changing the mechanical seal water intake 5, and the maintenance cost and the overhaul safety risk of the mechanical seal are reduced.
Compared with the related art, the self-sealing water device for the pump provided by the invention has the following beneficial effects:
the self-sealing water device for the pump is arranged on a pump body through the integrated type mechanical seal box, the integrated type mechanical seal box is provided with a mechanical seal water inlet and a mechanical seal water intake, water at the mechanical seal water inlet comes from the heat exchanger, the heat exchanger uses circulating water for cooling, the mechanical seal water intake is closed and isolated by a valve, sealing water is taken from a check valve secondary line pipeline of a pump outlet pipeline, and the sealing water enters the integrated type mechanical seal box to seal a rotating bearing of the pump.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a machine pump is from sealing water installation, includes machine pump body, machine seal water inlet and sealed water line, its characterized in that: a container type mechanical seal box is fixed on the right side of the mechanical pump body, a bearing is connected on the right side of the container type mechanical seal box, a mechanical seal water intake is arranged above the mechanical seal water inlet, the machine seal water inlet is positioned on the outer surface of the cartridge type machine seal box, the right side of the seal water pipeline is connected with a heat exchanger, and the sealing water pipeline is positioned below the machine sealing water inlet, a sealing water taking pipeline is arranged above the heat exchanger, an auxiliary pipeline is arranged above the sealed water taking pipeline, the right side of the heat exchanger is connected with a circulating water pipe, an outlet pipeline of the pump is arranged above the pump body, and the right side of the pump outlet pipeline is connected with a check valve, the right side of the check valve is provided with an outlet hand valve, the external of the check valve is fixed with a connecting mechanism, the external surface of the pump body is provided with an anti-corrosion coating, and the inside of the pump body is provided with a positioning mechanism.
2. The self-sealing water device for the pump according to claim 1, wherein the pump body is fixedly connected with the integrated type mechanical seal box, the outer surface of the pump body is tightly attached to the inner surface of the anti-corrosion coating, and the centers of circles of the pump body, the integrated type mechanical seal box and the bearing coincide with each other.
3. The self-sealing water device for pump according to claim 1, wherein the mechanical seal water inlet is fixedly connected with the seal water pipeline, and the cartridge type mechanical seal box forms a flow structure with the heat exchanger by the cooperation between the mechanical seal water inlet and the seal water pipeline.
4. The self-sealing water device for the pump as claimed in claim 1, wherein the secondary line is connected with the check valve, and the secondary line is connected with the heat exchanger through a sealing water intake line to form a flow structure.
5. The self-sealing water device for the pump as claimed in claim 1, wherein the connection mechanism comprises a flange plate, a fixing bolt, a sealing sleeve, a clamping block and a positioning groove, the fixing bolt is installed inside the flange plate, the sealing sleeve is connected to the right side of the flange plate, the clamping block is installed on the surface of the front end of the sealing sleeve, and the positioning groove is formed outside the clamping block.
6. The self-sealing water device for the pump as claimed in claim 5, wherein the sealing sleeve is wound on the outer surface of the flange in an annular structure, the flange forms a sealing structure through the sealing sleeve, the sealing sleeve forms a detachable structure with the flange through the matching between the clamping block and the positioning groove, and the pump outlet pipeline is connected with the flange of the check valve through the matching between the flange and the fixing bolt.
7. The self-sealing water device for the pump as claimed in claim 1, wherein the positioning mechanism comprises a mounting plate, a limiting block, a sliding groove, a threaded hole and an extension plate, the limiting block is fixed on the right side of the mounting plate, the sliding groove is arranged on the outside of the mounting plate, the threaded hole is arranged in the mounting plate, and the extension plate is arranged on the left side of the mounting plate.
8. The self-sealing water device for the pump as claimed in claim 7, wherein the threaded hole penetrates through the mounting plate, the mounting plate and the pump body form a sliding telescopic structure through the matching between the limiting block and the sliding groove, and the vertical length of the extending plate is greater than that of the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331772.9A CN111502983B (en) | 2020-04-24 | 2020-04-24 | Self-sealing water device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331772.9A CN111502983B (en) | 2020-04-24 | 2020-04-24 | Self-sealing water device for pump |
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| Publication Number | Publication Date |
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| CN111502983A true CN111502983A (en) | 2020-08-07 |
| CN111502983B CN111502983B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010331772.9A Active CN111502983B (en) | 2020-04-24 | 2020-04-24 | Self-sealing water device for pump |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095523A (en) * | 2006-10-06 | 2008-04-24 | Toflo Corporation Kk | Pump head and reciprocating pump device using the same |
| CN106351868A (en) * | 2016-11-07 | 2017-01-25 | 安徽卧龙泵阀股份有限公司 | Packaging type water cooling machine seal and pump with machine seal |
| CN107507466A (en) * | 2017-10-23 | 2017-12-22 | 成都环磊科技有限公司 | A kind of computer graphical instructional device |
| CN207065546U (en) * | 2017-07-04 | 2018-03-02 | 四川普什醋酸纤维素有限责任公司 | Station boiler feedwater pump machine water shutoff frock |
| CN210317801U (en) * | 2019-04-17 | 2020-04-14 | 李志鹏 | Prevent blockking up with high submerged motor pump of stability against current |
-
2020
- 2020-04-24 CN CN202010331772.9A patent/CN111502983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095523A (en) * | 2006-10-06 | 2008-04-24 | Toflo Corporation Kk | Pump head and reciprocating pump device using the same |
| CN106351868A (en) * | 2016-11-07 | 2017-01-25 | 安徽卧龙泵阀股份有限公司 | Packaging type water cooling machine seal and pump with machine seal |
| CN207065546U (en) * | 2017-07-04 | 2018-03-02 | 四川普什醋酸纤维素有限责任公司 | Station boiler feedwater pump machine water shutoff frock |
| CN107507466A (en) * | 2017-10-23 | 2017-12-22 | 成都环磊科技有限公司 | A kind of computer graphical instructional device |
| CN210317801U (en) * | 2019-04-17 | 2020-04-14 | 李志鹏 | Prevent blockking up with high submerged motor pump of stability against current |
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| Publication number | Publication date |
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| CN111502983B (en) | 2022-02-08 |
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