CN113958488B - Deep sea mining lift pump for coarse particles - Google Patents
Deep sea mining lift pump for coarse particles Download PDFInfo
- Publication number
- CN113958488B CN113958488B CN202111184764.7A CN202111184764A CN113958488B CN 113958488 B CN113958488 B CN 113958488B CN 202111184764 A CN202111184764 A CN 202111184764A CN 113958488 B CN113958488 B CN 113958488B
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- China
- Prior art keywords
- pulp
- seawater
- pump
- pump body
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011362 coarse particle Substances 0.000 title claims abstract description 22
- 238000005065 mining Methods 0.000 title claims abstract description 13
- 239000013535 sea water Substances 0.000 claims abstract description 94
- 238000000034 method Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
- F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
-
- 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
- F04B53/20—Filtering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a deep sea mining lift pump for coarse particles, which comprises a pump body part and a pipeline, wherein the pump body part comprises a plurality of pump bodies which are arranged in parallel, the bottoms of the pump bodies are commonly connected with the pipeline, one side of each pump body is connected with a pulp pipeline through a pulp inlet and outlet, a filter screen is arranged on a connecting pipeline of the pump body, and the other side of the pump body is connected with a sea water pipeline. The invention adopts the seawater reinjection to drive the lifting pump and the power system to be arranged on the offshore mining platform, thereby avoiding the technical defects of the deepwater motor; the filter screen is arranged in the pipeline connected with the pulp pump chamber and the pulp pipeline, so that coarse particle pulp can be prevented from entering the pulp pump chamber to collide and rub with the diaphragm, and the service life of the diaphragm is prolonged; the pressurization inlet valve and the depressurization outlet valve of the seawater pump chamber are arranged, so that impact of sudden pressurization and depressurization on the diaphragm can not occur in the working process, pressure fluctuation in the pipeline can be reduced, the pressure fluctuation is minimized, and continuous flow of ore pulp is ensured.
Description
Technical Field
The present invention relates to a lift pump, and in particular to a deep sea mining lift pump for coarse particles.
Background
As the demand for various mineral resources by industrial society continues to increase, mineral resources on land have gradually failed in the exploitation for many years, and thus various mineral resources in the ocean are increasingly being paid attention to. In order to relieve the urgent needs of industrial society on various mineral resources and the gradual exhaustion of the mineral resources on land, the improvement of the mining technology level of the mineral resources in the deep sea is particularly needed, and the ore mixing and conveying lifting technology is the key of the deep sea mining technology.
At present, most of mixed transportation and lifting of ores at home and abroad adopts a centrifugal vane pump, and the centrifugal vane pump has the following two problems that firstly, the vanes of the centrifugal pump are easy to wear, because ore pulp contains a large amount of coarse particles with irregular shapes, and the coarse particles can cause serious damage to the vanes in the operation process of the pump; secondly, the operation of centrifugal pumps requires a motor with a large power. As can be seen from the existing lift pump, the problems of abrasion, blockage and the like are the problems of the optimized development of the current lift pump. Therefore, designing a deep sea mining lift pump that is less prone to wear, is prone to blockage, and is easy to replace and maintain is a major problem facing the current improvement of deep sea mining technology.
Disclosure of Invention
The invention aims to: the invention aims to provide a deep sea mining lifting pump for coarse particles, which is not easy to wear and block and is convenient to replace and maintain.
The technical scheme is as follows: the invention comprises a pump body part and a pipeline, wherein the pump body part comprises a plurality of pump bodies which are arranged in parallel, the bottoms of the pump bodies are commonly connected with the pipeline, one side of each pump body is connected with the pulp pipeline through a pulp inlet and outlet, a filter screen is arranged on a connecting pipeline, and the other side of the pump body is connected with a seawater pipeline.
The pipeline is a U-shaped pipeline, two ends of the U-shaped pipeline are respectively connected with the pump body through the middle cover body, and the push rods of the left pump body and the right pump body can work circularly by utilizing the pressure difference of the U-shaped pipeline.
The pump body is internally provided with a diaphragm, the edge of the diaphragm is embedded into the pump body, and the diaphragm divides the pump chamber into an ore pulp pump chamber and a seawater pump chamber.
The diaphragm divides the pump chamber into a pulp pump chamber and a seawater pump chamber.
The middle of the diaphragm is connected with a push rod, and the bottom of the push rod sequentially penetrates through the pump body and the middle cover body and stretches into the U-shaped pipeline.
The end of the push rod extending into the U-shaped pipeline is provided with a piston, and the push rods and the pistons of the left pump body and the right pump body can work circularly by utilizing the pressure difference of the U-shaped pipeline.
The pump body is provided with a seawater inlet and a seawater outlet, and the seawater inlet and the seawater outlet are connected with a seawater pipeline.
The middle cover body be close to the one end of the pump body and install the uide bushing, the uide bushing cover in the push rod outside for the direction, the support and the dynamic seal of push rod.
The ore pulp pipeline is provided with an inlet valve and an outlet valve.
The seawater pipeline is provided with an inlet valve, a pressurizing inlet valve, a pressure reducing valve and a pressure reducing outlet valve, so that sudden pressurization and pressure relief can not occur in the working process, impact on a diaphragm can be avoided, pressure fluctuation in the pipeline can be reduced, the pressure fluctuation is minimized, and continuous flow of ore pulp is ensured.
The beneficial effects are that:
(1) The invention adopts the seawater reinjection to drive the lifting pump and the power system to be arranged on the offshore mining platform, thereby avoiding the technical defects of the deepwater motor;
(2) The double-row-suction driving mode is adopted, the pump set working mode is adopted, redundancy capacity is high, and the normal operation of the system is not affected by the occurrence of individual pump faults in the pump set;
(3) The device can be used for lifting coarse particle ore pulp within the range of 20mm-50 mm;
(4) The filter screen is arranged in the pipeline connected with the pulp pump chamber and the pulp pipeline, so that coarse particle pulp can be prevented from entering the pulp pump chamber to collide and rub with the diaphragm, the service life of the diaphragm is prolonged, and compared with a centrifugal lifting pump, the centrifugal lifting pump has the advantages of high conveying pressure, high efficiency, firmness, durability and difficult abrasion;
(5) The pressurization inlet valve and the depressurization outlet valve of the seawater pump chamber are arranged, so that impact of sudden pressurization and depressurization on the diaphragm can not occur in the working process, pressure fluctuation in the pipeline can be reduced, the pressure fluctuation is minimized, and continuous flow of ore pulp is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a pump body part structure of the present invention;
FIG. 3 is a schematic view of the structure of the middle cover of the present invention;
FIG. 4 is a schematic view of a U-shaped pipe according to the present invention;
fig. 5 is a distribution diagram of a transport pipeline according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the invention comprises a pump body part 2, a middle cover body 3 and a U-shaped pipeline 4, wherein the pump body part 2 comprises a left pump body and a right pump body, the lifting of ore pulp is realized through the suction and the discharge of seawater, the pump bodies on two sides are symmetrically distributed, the bottoms of the pump bodies on two sides are respectively and jointly connected with the U-shaped pipeline 4 through the middle cover body 3, the top of the pump body part 2 is connected with the ore pulp pipeline 1, and the middle part is connected with the seawater pipeline 5.
As shown in fig. 2, the single pump body comprises a pump body 13, the top of the pump body 13 is provided with an ore pulp inlet and outlet 7, the middle of the pump body is provided with a seawater inlet and outlet 11, the ore pulp inlet and outlet 7 is connected with the ore pulp pipeline 1, and the connecting pipeline is provided with a filter screen 6, so that coarse particle ore pulp is prevented from entering the ore pulp pump chamber 8 and colliding with the diaphragm 9, friction is avoided, and the service life of the diaphragm 9 is greatly prolonged. The seawater inlet and outlet 11 is communicated with the seawater pipeline 5. The pulp inlet and outlet 7 and the water inlet and outlet 11 of the left pump body and the right pump body are arranged on the same side. The diaphragm 9 is arranged in the pump body 13, the edge of the diaphragm 9 is embedded in the pump body 13, the diaphragm 9 divides the pump chamber into the pulp pump chamber 8 and the seawater pump chamber 12, the center of the diaphragm 9 is connected with the push rod 10, the bottom of the push rod 10 sequentially passes through the pump body 13 and the middle cover body 3, and extends into the U-shaped pipeline 4, and the tail end of the push rod 10 extending into the U-shaped pipeline 4 is provided with the piston 16, as shown in fig. 4.
The U-shaped pipeline 4 comprises a U-shaped pipe 17, push rods 10 extend into the left side and the right side of the U-shaped pipe 17, pistons 16 are arranged at the bottoms of the push rods 10, and the push rods 10 of the left pump body and the right pump body can work circularly by utilizing the pressure difference of the U-shaped pipeline 4.
As shown in fig. 3, the middle cover 3 comprises a cover 14 and a guide sleeve 15, and is used for connecting the pump body 13 and the U-shaped pipeline 4, and fixing the U-shaped pipeline 4 with the two pump bodies 13 connected in parallel. A guide sleeve 15 is further installed at one end, close to the pump body 13, of the middle cover body 3, the guide sleeve 15 is sleeved on the outer side of the push rod 10, and the main function of the guide sleeve 15 is used for guiding, supporting and dynamic sealing of the push rod 10.
The working principle of the invention is as follows:
the pump is full of pulp when the lift pump starts to work, coarse particles in the pulp are intercepted by the filter screen 6 and do not enter the pump body 13, the left sea water inlet valve 38, the right sea water outlet valve 32, the left pulp outlet valve 21 and the right pulp inlet valve 25 are opened, all other valves are closed, high-pressure sea water in the sea water pipeline 5 enters the sea water pump chamber 12 of the left pump body, the diaphragm 9 in the left pump body is pushed to rise, thereby driving the push rod 10 in the left pump body to rise, the push rod 10 in the left pump body drives the push rod 10 in the right pump body to descend by utilizing the pressure difference of the U-shaped pipeline 4, thereby driving the diaphragm 9 in the right pump body to descend, the pulp pump chamber 8 of the left pump body and the sea water pump chamber 12 of the right pump body reduce in volume, pulp in the pulp pump chamber 8 of the left pump body is extruded by the pulp pump chamber, the pulp in the left pump body is discharged together with coarse particles intercepted by the filter screen 6 through the pulp outlet pipeline 22, the sea water in the sea water pump chamber 12 of the right pump body is discharged through the sea water outlet pipeline 33, meanwhile the volume of the pulp pump chamber 8 of the right pump body is increased, the pulp 8 of the pulp 8 is sucked into the pulp pump chamber 26 of the right pump body by the pressure difference of the U-shaped pipeline 4, and the coarse particles in the pulp pump chamber 8 of the pulp in the pump body is not intercepted by the filter screen 6.
When the operation of the seawater pump chamber 12 of the left pump body is finished, the left seawater inlet valve 38, the right seawater outlet valve 32, the left pulp outlet valve 21 and the right pulp inlet valve 25 are closed, the left seawater outlet valve 34, the right seawater inlet valve 28, the left pulp inlet valve 19 and the right pulp outlet valve 23 are opened, the volumes of the seawater pump chamber 12 of the left pump body and the pulp pump chamber 8 of the right pump body are reduced, the pulp pump chamber 8 of the right pump body presses pulp into the pulp pipeline 1, the pulp in the right pump body is discharged through the pulp outlet pipeline 22 together with coarse particles intercepted by the filter screen 6 during the discharge, the seawater pump chamber 12 of the left pump body presses the seawater into the seawater pipeline 5, and then is discharged through the seawater outlet pipeline 33, the volume of the pulp pump chamber 8 of the left pump body is increased, the pulp in the left pulp inlet pipeline 18 is sucked into the pump chamber, and coarse particles in the pulp are intercepted by the filter screen 6 and do not enter the pump body, so that one cycle of the pump body operation is realized.
Before the left seawater inlet valve 38 of the left pump body is opened, the left seawater pump chamber pressurizing inlet valve 37 is opened, the pressure is increased to a certain degree, the left seawater inlet valve 38 is opened again after the pressure is increased to the pump chamber, the diaphragm 9 is driven to move so as to reduce the impact of pressure variation on the diaphragm 9, and similarly, before the right seawater inlet valve 28 of the right pump body is opened, the right seawater pump chamber pressurizing inlet valve 29 is opened to slowly increase the pressure into the pump, and then the right seawater inlet valve 28 is opened.
Before the left seawater outlet valve 34 of the left pump body is opened, the left seawater pump chamber decompression outlet valve 35 is opened to reduce the pressure in the pump chamber, then the left seawater outlet valve 34 is opened to discharge seawater in the pump, and similarly, before the right seawater outlet valve 32 of the right pump body is opened, the right seawater pump chamber decompression outlet valve 31 is opened to decompress, and then the right seawater outlet valve 32 is opened to discharge seawater. This cycle is repeated over time to ensure that sudden pressurisation and pressure relief do not occur during operation to avoid impact on the diaphragm 9, to help reduce pressure fluctuations in the conduit, to minimise pressure fluctuations and to ensure continuous flow of slurry.
Claims (2)
1. A deep sea mining lift pump for coarse particles is characterized by comprising a pump body part (2), an intermediate cover body (3) and pipelines, wherein the pump body part (2) comprises a left pump body and a right pump body, the pump bodies on two sides are symmetrically distributed, the bottoms of the pump bodies on two sides are jointly connected with the pipelines, the pipelines are U-shaped pipelines (4), two ends of each U-shaped pipeline (4) are respectively connected with the pump body through the intermediate cover body (3), one side of each pump body is connected with a pulp pipeline (1) through a pulp inlet and outlet (7), a filter screen (6) is arranged on a pipeline connected with the pulp inlet and outlet (7), the other side of each pump body is connected with a sea water pipeline (5) through a sea water inlet and outlet (11), a diaphragm (9) is arranged in each pump body, the pump body is divided into a pulp pump chamber (8) and a sea water pump chamber (12) by the diaphragm (9), the pulp inlet and the pulp pump chamber (7) are communicated with the pulp pump chamber (8), the sea water inlet and the sea water pump chamber (11) are communicated with the sea water pump chamber (12), the centers of the diaphragm (9) are connected with a push rod (10), the bottoms of the push rod (10) sequentially penetrate through the pump body and the intermediate cover body (3) and extend into the U-shaped pipelines (4) to form U-shaped pipelines (4) to be provided with piston ends (17), push rods (10) extend into the left side and the right side of the U-shaped pipe (17), pistons (16) are arranged at the bottoms of the push rods (10), the push rods (10) of the left pump body and the right pump body are enabled to work circularly by utilizing the pressure difference of the U-shaped pipe (4), the middle cover body (3) comprises a cover body (14) and a guide sleeve (15), one end, close to the pump body, of the middle cover body (3) is further provided with the guide sleeve (15), and the guide sleeve (15) is sleeved on the outer side of the push rods (10); the pulp pipeline (1) is sequentially provided with a left pulp inlet pipeline (18), a left pulp inlet valve (19), a left pulp three-way pipe (20), a left pulp outlet valve (21), a pulp outlet pipeline (22), a right pulp outlet valve (23), a right pulp three-way pipe (24), a right pulp inlet valve (25) and a right pulp inlet pipeline (26), wherein the left pulp three-way pipe (20) is communicated with a left pump body, and the right pulp three-way pipe (24) is communicated with a right pump body; the seawater pipeline (5) is sequentially provided with a left seawater inlet pipeline (39), a left seawater inlet valve (38), a left seawater pump chamber pressurizing inlet valve (37), a left seawater three-way pipe (36), a left seawater pump chamber depressurizing outlet valve (35), a left seawater outlet valve (34), a seawater outlet pipeline (33), a right seawater outlet valve (32), a right seawater pump chamber depressurizing outlet valve (31), a right seawater three-way pipe (30), a right seawater pump chamber pressurizing inlet valve (29), a right seawater inlet valve (28) and a right seawater inlet pipeline (27), wherein the left seawater three-way pipe (36) is communicated with a left pump body, and the right seawater three-way pipe (30) is communicated with a right pump body; when the lifting pump starts to work, the pump body is filled with ore pulp, coarse particles in the ore pulp are intercepted by the filter screen and do not enter the pump body, a left seawater inlet valve (38), a right seawater outlet valve (32), a left ore pulp outlet valve (21) and a right ore pulp inlet valve (25) are opened, all other valves are closed, high-pressure seawater in the seawater pipeline (5) enters a seawater pump chamber (12) of the left pump body, a diaphragm (9) in the left pump body is pushed to rise, so that a push rod (10) in the left pump body is driven to rise, the push rod (10) in the left pump body drives the push rod (10) in the right pump body to descend by utilizing the pressure difference of a U-shaped pipeline (4), so that the volumes of a pulp pump chamber (8) of the left pump body and a seawater pump chamber (12) of the right pump body are reduced, the ore pulp in the left pump body is extruded out through an outlet pipeline (22) together with coarse particles intercepted by the filter screen (6), the seawater in the left pump body is discharged through the seawater pump chamber (12) so that the seawater in the right pump body is driven to rise, and then the size of the ore pulp in the pump chamber (8) is sucked into the pump chamber (8) by the right pump chamber (8) by the filter screen (33) and the filter screen is not intercepted by the right pump chamber (8); when the operation of the seawater pump chamber (12) of the left pump body is finished, the left seawater inlet valve (38), the right seawater outlet valve (32), the left pulp outlet valve (21) and the right pulp inlet valve (25) are closed, the left seawater outlet valve (34), the right seawater inlet valve (28), the left pulp inlet valve (19) and the right pulp outlet valve (23) are opened, the volumes of the seawater pump chamber (12) of the left pump body and the pulp pump chamber (8) of the right pump body are reduced, the pulp pump chamber (8) of the right pump body presses pulp into the pulp pipeline (1), the pulp in the right pump body is discharged through the pulp outlet pipeline (22) together with coarse particles intercepted by the filter screen (6), the seawater pump chamber (12) of the left pump body presses seawater into the seawater pipeline (5), the pulp is discharged through the seawater outlet pipeline (33), the pulp pump chamber (8) of the left pump body is increased in volume, the pulp in the left pulp inlet pipeline (18) is sucked into the pump chamber, and coarse particles in the pump chamber are intercepted by the filter screen (6) and do not enter the pump body.
2. Deep sea mining lift pump for coarse particles according to claim 1, characterized in that the diaphragm (9) is edge-embedded in the pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184764.7A CN113958488B (en) | 2021-10-12 | 2021-10-12 | Deep sea mining lift pump for coarse particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184764.7A CN113958488B (en) | 2021-10-12 | 2021-10-12 | Deep sea mining lift pump for coarse particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113958488A CN113958488A (en) | 2022-01-21 |
| CN113958488B true CN113958488B (en) | 2023-11-21 |
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ID=79463992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111184764.7A Active CN113958488B (en) | 2021-10-12 | 2021-10-12 | Deep sea mining lift pump for coarse particles |
Country Status (1)
| Country | Link |
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| CN (1) | CN113958488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217477A (en) * | 2022-07-11 | 2022-10-21 | 四川宏华石油设备有限公司 | Ore pulp lifting unit, ore pulp lifting device, mining device and mining system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203939790U (en) * | 2014-07-22 | 2014-11-12 | 太原市鸿煷机械设备有限公司 | The reciprocal supercharging device of twin-tub |
| CN205937058U (en) * | 2016-08-25 | 2017-02-08 | 重庆水泵厂有限责任公司 | High temperature ore pulp diaphragm pump fluid end structure |
| CN111188618A (en) * | 2020-01-17 | 2020-05-22 | 江苏科技大学 | Deep sea mining lift pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824364B2 (en) * | 2002-09-20 | 2004-11-30 | Rimcraft Technologies, Inc. | Master/slave pump assembly employing diaphragm pump |
-
2021
- 2021-10-12 CN CN202111184764.7A patent/CN113958488B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203939790U (en) * | 2014-07-22 | 2014-11-12 | 太原市鸿煷机械设备有限公司 | The reciprocal supercharging device of twin-tub |
| CN205937058U (en) * | 2016-08-25 | 2017-02-08 | 重庆水泵厂有限责任公司 | High temperature ore pulp diaphragm pump fluid end structure |
| CN111188618A (en) * | 2020-01-17 | 2020-05-22 | 江苏科技大学 | Deep sea mining lift pump |
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| CN113958488A (en) | 2022-01-21 |
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