CN107915055B - Sand conveying system - Google Patents
Sand conveying system Download PDFInfo
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- CN107915055B CN107915055B CN201710862632.2A CN201710862632A CN107915055B CN 107915055 B CN107915055 B CN 107915055B CN 201710862632 A CN201710862632 A CN 201710862632A CN 107915055 B CN107915055 B CN 107915055B
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- sand
- main pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A sand conveying system consists of a multistage centrifugal pump, a pump unit, a water outlet main pipe of the multistage centrifugal pump, a water inlet main pipe of the multistage centrifugal pump, a sand suction main pipe, a sand discharge main pipe and a control system. When the invention is applied, liquid can be pumped from the clear liquid buffer tank of one pump monomer, and the liquid is injected into the other pump monomer after being pressurized by the multistage centrifugal pump, so that sand and stone deposited in the sand setting pipeline in advance can be washed away. The control system has the advantages that the hydraulic control valve is controlled by the cross start and stop of the pump units according to a certain program, sand and stones can be sequentially and alternately conveyed in the pump units, and continuous and stable conveying of sand and stones in the sand conveying main pipe can be realized. And can realize the long-distance transportation of the mixed material of large grain diameter, high solid content, heterogeneous sand and water.
Description
Technical Field
The invention relates to sand conveying equipment, in particular to occasions needing to convey sand and stones at a long distance, and belongs to the technical field of conveying of sea filling, island making, channel dredging and the like.
Background
At present, main stream equipment for island making by sea filling adopts a centrifugal mortar pump conveying and shipping mode, the centrifugal mortar pump has high efficiency, low output pressure, relatively short conveying distance and relatively long shipping conveying distance and low efficiency.
Disclosure of Invention
Aiming at the defects of small outlet pressure, small conveying distance, easy blockage by large-particle sand stone, serious abrasion and the like of a centrifugal mortar pump, the invention provides the sand stone conveying equipment capable of remotely conveying sand stones.
The invention is realized by the following technical scheme:
a sand conveying system has the technical scheme that: the system consists of a multistage centrifugal pump 1, a pump unit 2, a multistage centrifugal pump water outlet main pipe 3, a multistage centrifugal pump water inlet main pipe 4, a sand suction main pipe 5, a sand discharge main pipe 6 and a control system 7.
The pump unit 2 is composed of a first connecting pipeline 8, a first hydraulic control valve 9, a sand settling pipeline 10, a clear liquid buffer tank 11, a one-way valve 12, a second connecting pipeline 13, a third connecting pipeline 14, a fourth connecting pipeline 15, a second hydraulic control valve 16, a water inlet and drainage main pipe 17, a third hydraulic control valve 18, a fifth connecting pipeline 19, a fourth hydraulic control valve 20 and a sixth connecting pipeline 21, wherein the first connecting pipeline 8, the first hydraulic control valve 9, the sand settling pipeline 10, the clear liquid buffer tank 11, the one-way valve 12, the second connecting pipeline 13, the third connecting pipeline 14, the fourth connecting pipeline 15, the second hydraulic control valve 16, the water inlet and drainage main pipe 17, the third hydraulic control valve 18, the fifth connecting pipeline 19, the fourth hydraulic control valve 20 and the sixth connecting pipeline 21 are combined, when the first connecting pipeline 8 connects the first hydraulic control valve 9 with the sand settling pipeline 10, the second connecting pipeline 13 connects the sand settling pipeline 10 with the buffer tank 11, the one-way valve 12 is arranged at the front end of the clear liquid buffer tank 11, the third connecting pipeline 14 connects the sand settling pipeline 10 with the one-way valve 12, the fourth connecting pipeline 15 connects the fourth connecting pipeline 16 with the fourth connecting pipeline 20, and the fourth connecting pipeline 20 connects the fourth connecting pipeline 20 with the fourth connecting pipeline 20; thereby forming the pump unit 2 as a whole.
When the multistage centrifugal pump 1, the pump monomer 2, the multistage centrifugal pump water outlet main pipe 3, the multistage centrifugal pump water inlet main pipe 4, the sand suction main pipe 5, the sand discharge main pipe 6 and the control system 7 are combined, the multistage centrifugal pump water outlet main pipe 3 and the multistage centrifugal pump water inlet main pipe 4 are respectively connected to the multistage centrifugal pump 1; the sand suction main pipe 5 is respectively connected to a first connecting pipeline 8 of the pump unit 2 and a water outlet main pipe 3 of the multistage centrifugal pump; the sand discharging main pipe 6 is respectively connected to a connecting pipeline IV 15 of the pump unit 2 and the water inlet main pipe 4 of the multistage centrifugal pump; the control system 7 is respectively connected to a first hydraulic control valve 9, a second hydraulic control valve 16, a third hydraulic control valve 18 and a fourth hydraulic control valve 20 of the pump unit 2, so that the sand conveying system is formed as a whole.
2. A sand conveying system has the technical scheme that: the pump units 2 may be arranged in multiple groups at the same time.
The application principle of the invention is as follows:
in order to realize continuous and stable sand pumping and sand discharging, a complete sand conveying device of the invention needs a plurality of groups of pump monomers 2 to be combined for use, and the following description uses three pump monomer 2 combinations as an example, for convenience of description, the three pump monomers 2 are respectively identified by A, B, C, and A, B, C is added after the serial numbers of the constituent elements of the pump monomers for distinguishing.
The working sequence of the conveying equipment is as follows: pumping sand from the single pump 2A and discharging sand from the single pump 2B in the 1 st time period; pumping sand from the single pump 2B and discharging sand from the single pump 2C in the 2 nd time period; and 3, pumping sand from the single pump 2C in the 3 rd time period, discharging sand from the single pump 2A, and sequentially circulating.
In the 1 st period, the control system controls the first hydraulic control valve 9A and the fourth hydraulic control valve 20A in the pump unit 2A to be opened, the second hydraulic control valve 16A and the third hydraulic control valve 18A to be closed, the first hydraulic control valve 9B and the fourth hydraulic control valve 20B in the pump unit 2B to be closed, the second hydraulic control valve 16B and the third hydraulic control valve 18B to be opened, the check valve 12A to be opened automatically, and the check valve 12B to be closed automatically.
The mixed material containing sand and seawater which is pumped up enters a sand settling pipeline 10A from a sand suction main pipe 5 through a first hydraulic control valve 9A, the mixed material is subjected to preliminary solid-liquid separation, sand is temporarily deposited in the sand settling pipeline 10A, clear liquid enters a clear liquid buffer tank 11A through a one-way valve 12A for further solid-liquid separation, and the clear liquid enters a multistage centrifugal pump 1 for pressurization through a fourth hydraulic control valve 20A.
The pressurized clear liquid enters the pump monomer 2B, enters the clear liquid buffer tank 11B through the valve III 18 of the hydraulic control valve, enters the sand setting pipeline 10B, washes sand temporarily deposited in the clear liquid buffer tank 11B and the sand setting pipeline 10B in the previous period, and enters the sand discharging main pipe 6 through the valve II 16B to realize sand and stone conveying.
After the 1 st time period is completed, the control system 7 can control the sand conveying equipment to enter the 2 nd time period and then enter the 3 rd time period, and the mixed materials can be continuously and stably conveyed in the sand suction main pipe 5 and the sand discharge main pipe 6 by sequentially circulating.
The beneficial effects of the invention are as follows:
1. the invention has scientific and reasonable design, novel conception and unique measures.
2. When the invention is applied, liquid can be pumped from the clear liquid buffer tank of one pump monomer, and the liquid is injected into the other pump monomer after being pressurized by the multistage centrifugal pump, so that sand and stone deposited in the sand setting pipeline in advance can be washed away. When the multistage centrifugal pump extracts liquid from the clear liquid buffer tank of one pump monomer, the mixed material of sand stone and water of the sand suction main pipe is sucked into the sand setting pipeline at the same time, solid-liquid separation is carried out, sand stone is deposited on the sand setting pipeline, and clear liquid enters the clear liquid buffer tank. The opening and closing time of the hydraulic control valve is controlled, so that the amount of sand and stone sucked into the sand setting pipeline can be controlled within a proper range. After the clear liquid is pressurized by the multistage centrifugal pump, the clear liquid is injected into a clear liquid buffer tank of another pump monomer, and a one-way valve attached to the clear liquid buffer tank controls the flowing direction of the clear liquid, so that sand and stone deposited in the sand setting pipeline in advance are washed away, and one-time conveying of the sand and stone is realized. The control system has the advantages that the hydraulic control valve is controlled by the cross start and stop of the pump units according to a certain program, sand and stones can be sequentially and alternately conveyed in the pump units, and continuous and stable conveying of sand and stones in the sand conveying main pipe can be realized. And can realize the long-distance transportation of the mixed material of large grain diameter, high solid content, heterogeneous sand and water.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is also a schematic structural view of the present invention.
Fig. 3 is a schematic structural view of the pump unit 2 according to the present invention.
In fig. 1, a multistage centrifugal pump 1, a pump unit 2, a multistage centrifugal pump water outlet main pipe 3, a multistage centrifugal pump water inlet main pipe 4, a sand suction main pipe 5, a sand discharge main pipe 6 and a control system 7.
In fig. 2, a multistage centrifugal pump 1, a pump unit 2, a multistage centrifugal pump water outlet manifold 3, a multistage centrifugal pump water inlet manifold 4, a sand suction manifold 5, a sand discharge manifold 6 and a control system 7.
In fig. 3, 2 is a pump unit, 8 is a connecting pipe I, 9 is a hydraulic control valve I, 10 is a sand setting pipeline, 11 is a clear liquid buffer tank, 12 is a one-way valve, 13 is a connecting pipe II, 14 is a connecting pipe III, 15 is a connecting pipe IV, 16 is a hydraulic control valve II, 17 is a water inlet and outlet main pipe, 18 is a hydraulic control valve III, 19 is a connecting pipe five, 20 is a hydraulic control valve IV, and 21 is a connecting pipe six.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings:
the invention is composed of a multistage centrifugal pump 1, a pump monomer 2, a multistage centrifugal pump water outlet main pipe 3, a multistage centrifugal pump water inlet main pipe 4, a sand suction main pipe 5, a sand discharge main pipe 6 and a control system 7.
Fig. 1 and 2 show a schematic structure of the present invention. The system comprises a multistage centrifugal pump 1, a pump unit 2, a multistage centrifugal pump water outlet main pipe 3, a multistage centrifugal pump water inlet main pipe 4, a sand suction main pipe 5, a sand discharge main pipe 6 and a control system 7.
Fig. 3 is a schematic diagram showing the structure of the pump unit 2 according to the present invention. The pump unit 2 is composed of a first connecting pipeline 8, a first hydraulic control valve 9, a sand settling pipeline 10, a clear liquid buffer tank 11, a one-way valve 12, a second connecting pipeline 13, a third connecting pipeline 14, a fourth connecting pipeline 15, a second hydraulic control valve 16, a water inlet and outlet main pipe 17, a third hydraulic control valve 18, a fifth connecting pipeline 19, a fourth hydraulic control valve 20 and a sixth connecting pipeline 21, wherein the first connecting pipeline 8, the first hydraulic control valve 9, the sand settling pipeline 10, the clear liquid buffer tank 11, the one-way valve 12, the second connecting pipeline 13, the third connecting pipeline 14, the fourth connecting pipeline 15, the second hydraulic control valve 16, the water inlet and outlet main pipe 17, the third hydraulic control valve 18, the fifth connecting pipeline 19, the fourth hydraulic control valve 20 and the sixth connecting pipeline 21 are combined, when the first connecting pipeline 8 connects the first hydraulic control valve 9 with the sand settling pipeline 10, the second connecting pipeline 13 connects the sand settling pipeline 10 with the clear liquid buffer tank 11, the one-way valve 12 is arranged at the front end of the clear liquid buffer tank 11, the third connecting pipeline 14 connects the sand settling pipeline 10 with the one-way valve 12, the fourth connecting pipeline 15 connects the fourth connecting pipeline 15 with the fourth connecting pipeline 18, the fourth connecting pipeline 20 and the fourth connecting pipeline 20 connects the fourth connecting pipeline 20 with the fourth connecting pipeline 20; thereby forming the pump unit 2 as a whole.
When the multistage centrifugal pump 1, the pump monomer 2, the multistage centrifugal pump water outlet main pipe 3, the multistage centrifugal pump water inlet main pipe 4, the sand suction main pipe 5, the sand discharge main pipe 6 and the control system 7 are combined, the multistage centrifugal pump water outlet main pipe 3 and the multistage centrifugal pump water inlet main pipe 4 are respectively connected to the multistage centrifugal pump 1; the sand suction main pipe 5 is respectively connected to a first connecting pipeline 8 of the pump unit 2 and a water outlet main pipe 3 of the multistage centrifugal pump; the sand discharging main pipe 6 is respectively connected to a connecting pipeline IV 15 of the pump unit 2 and the water inlet main pipe 4 of the multistage centrifugal pump; the control system 7 is respectively connected to a first hydraulic control valve 9, a second hydraulic control valve 16, a third hydraulic control valve 18 and a fourth hydraulic control valve 20 of the pump unit 2, so that the sand conveying system is formed as a whole.
The pump units 2 may be arranged in multiple groups at the same time.
The application principle of the invention is as follows:
in order to realize continuous and stable sand pumping and sand discharging, a complete sand conveying device of the invention needs a plurality of groups of pump monomers 2 to be combined for use, and the following description uses three pump monomer 2 combinations as an example, for convenience of description, the three pump monomers 2 are respectively identified by A, B, C, and A, B, C is added after the serial numbers of the constituent elements of the pump monomers for distinguishing.
The working sequence of the conveying equipment is as follows: pumping sand from the single pump 2A and discharging sand from the single pump 2B in the 1 st time period; pumping sand from the single pump 2B and discharging sand from the single pump 2C in the 2 nd time period; and 3, pumping sand from the single pump 2C in the 3 rd time period, discharging sand from the single pump 2A, and sequentially circulating.
In the 1 st period, the control system controls the first hydraulic control valve 9A and the fourth hydraulic control valve 20A in the pump unit 2A to be opened, the second hydraulic control valve 16A and the third hydraulic control valve 18A to be closed, the first hydraulic control valve 9B and the fourth hydraulic control valve 20B in the pump unit 2B to be closed, the second hydraulic control valve 16B and the third hydraulic control valve 18B to be opened, the check valve 12A to be opened automatically, and the check valve 12B to be closed automatically.
The mixed material containing sand and seawater which is pumped up enters a sand settling pipeline 10A from a sand suction main pipe 5 through a first hydraulic control valve 9A, the mixed material is subjected to preliminary solid-liquid separation, sand is temporarily deposited in the sand settling pipeline 10A, clear liquid enters a clear liquid buffer tank 11A through a one-way valve 12A for further solid-liquid separation, and the clear liquid enters a multistage centrifugal pump 1 for pressurization through a fourth hydraulic control valve 20A.
The pressurized clear liquid enters the pump monomer 2B, enters the clear liquid buffer tank 11B through the valve III 18 of the hydraulic control valve, enters the sand setting pipeline 10B, washes sand temporarily deposited in the clear liquid buffer tank 11B and the sand setting pipeline 10B in the previous period, and enters the sand discharging main pipe 6 through the valve II 16B to realize sand and stone conveying.
After the 1 st time period is completed, the control system 7 can control the sand conveying equipment to enter the 2 nd time period and then enter the 3 rd time period, and the mixed materials can be continuously and stably conveyed in the sand suction main pipe 5 and the sand discharge main pipe 6 by sequentially circulating.
In the above, it is obvious to those skilled in the art that various other corresponding changes and modifications can be made according to the technical scheme and the technical idea of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (2)
1. A sand conveying system, characterized in that: the system consists of a multistage centrifugal pump (1), a pump monomer (2), a multistage centrifugal pump water outlet main pipe (3), a multistage centrifugal pump water inlet main pipe (4), a sand suction main pipe (5), a sand discharge main pipe (6) and a control system (7);
the pump unit (2) consists of a first connecting pipeline (8), a first hydraulic control valve (9), a sand settling pipeline (10), a clear liquid buffer tank (11), a one-way valve (12), a second connecting pipeline (13), a third connecting pipeline (14), a fourth connecting pipeline (15), a second hydraulic control valve (16), a water inlet and outlet main pipe (17), a third hydraulic control valve (18), a fifth connecting pipeline (19), a fourth hydraulic control valve (20) and a sixth connecting pipeline (21), wherein the first connecting pipeline (8), the first hydraulic control valve (9), the sand settling pipeline (10), the clear liquid buffer tank (11), the one-way valve (12), the second connecting pipeline (13), the third connecting pipeline (14), the fourth connecting pipeline (15), the second hydraulic control valve (16), the water inlet and outlet main pipe (17), the third hydraulic control valve (18), the fifth connecting pipeline (19), the fourth hydraulic control valve (20) and the sixth connecting pipeline (21) are combined, when the first connecting pipeline (8) connects the first hydraulic control valve (9) with the sand settling pipeline (10), the second connecting pipeline (13) and the second connecting pipeline (13) to connect the clear liquid buffer tank (11) with the clear liquid buffer tank (11) at the front end of the one-way valve (11), the sand setting pipeline (10) and the one-way valve (12) are connected through a connecting pipeline III (14), the sand setting pipeline (10) and the hydraulic control valve II (16) are connected through a connecting pipeline IV (15), the hydraulic control valve III (18) and the hydraulic control valve IV (20) are connected through a water inlet and outlet main pipe (17), a connecting pipeline IV (19) is also connected to the hydraulic control valve III (18), and a connecting pipeline VI (21) is also connected to the hydraulic control valve IV (20); thereby forming the whole of the pump unit (2);
when the multistage centrifugal pump (1), the pump monomer (2), the multistage centrifugal pump water outlet main pipe (3), the multistage centrifugal pump water inlet main pipe (4), the sand suction main pipe (5), the sand discharge main pipe (6) and the control system (7) are combined, the multistage centrifugal pump water outlet main pipe (3) and the multistage centrifugal pump water inlet main pipe (4) are respectively connected to the multistage centrifugal pump (1); the sand suction main pipe (5) is respectively connected to a first connecting pipeline (8) of the pump unit (2) and the multistage centrifugal pump water outlet main pipe (3); the sand discharging main pipe (6) is respectively connected to a connecting pipeline IV (15) of the pump unit (2) and the water inlet main pipe (4) of the multistage centrifugal pump; the control system (7) is respectively connected to a first hydraulic control valve (9), a second hydraulic control valve (16), a third hydraulic control valve (18) and a fourth hydraulic control valve (20) of the pump unit (2), so that the sand conveying system is formed as a whole.
2. A sand delivery system as claimed in claim 1 wherein: the pump units (2) are provided with a plurality of groups at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862632.2A CN107915055B (en) | 2017-09-21 | 2017-09-21 | Sand conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862632.2A CN107915055B (en) | 2017-09-21 | 2017-09-21 | Sand conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107915055A CN107915055A (en) | 2018-04-17 |
| CN107915055B true CN107915055B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710862632.2A Active CN107915055B (en) | 2017-09-21 | 2017-09-21 | Sand conveying system |
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| Country | Link |
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| CN (1) | CN107915055B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647950A (en) * | 2020-11-27 | 2021-04-13 | 吉县古贤泵业有限公司 | Deep sea mining method and deep sea mining device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2845261A1 (en) * | 1978-10-18 | 1979-10-31 | Baumasch Handel Serv Ersatz | Cement mixing material transport and metering machine - has rotor with closed body and coolant inlet and outlet |
| CN103303682A (en) * | 2013-06-14 | 2013-09-18 | 首钢长治钢铁有限公司 | Sand conveying device of air separation column |
| RU2538140C1 (en) * | 2013-07-12 | 2015-01-10 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Station for transfer and separation of multiphase mix |
| CN105736385A (en) * | 2014-12-06 | 2016-07-06 | 哈尔滨金大环境工程有限公司 | Single-stage single-suction sand pump sand suction device and sand suction method |
| CN106217269A (en) * | 2016-09-26 | 2016-12-14 | 合肥通用机械研究院 | A kind of continual water sand compound abrasive distance supply induction system |
| CN207312645U (en) * | 2017-09-21 | 2018-05-04 | 平果新古贤泵业有限公司 | A kind of sand delivering system |
-
2017
- 2017-09-21 CN CN201710862632.2A patent/CN107915055B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2845261A1 (en) * | 1978-10-18 | 1979-10-31 | Baumasch Handel Serv Ersatz | Cement mixing material transport and metering machine - has rotor with closed body and coolant inlet and outlet |
| CN103303682A (en) * | 2013-06-14 | 2013-09-18 | 首钢长治钢铁有限公司 | Sand conveying device of air separation column |
| RU2538140C1 (en) * | 2013-07-12 | 2015-01-10 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Station for transfer and separation of multiphase mix |
| CN105736385A (en) * | 2014-12-06 | 2016-07-06 | 哈尔滨金大环境工程有限公司 | Single-stage single-suction sand pump sand suction device and sand suction method |
| CN106217269A (en) * | 2016-09-26 | 2016-12-14 | 合肥通用机械研究院 | A kind of continual water sand compound abrasive distance supply induction system |
| CN207312645U (en) * | 2017-09-21 | 2018-05-04 | 平果新古贤泵业有限公司 | A kind of sand delivering system |
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| CN107915055A (en) | 2018-04-17 |
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Effective date of registration: 20210207 Address after: 042200 18 Lei Shen Gou, Ji Chang town, Ji County, Linfen, Shanxi Applicant after: Gu Xianbeng industry Co.,Ltd. of Ji County Address before: 531400 No.104, 1st floor, building 34, Hanxiao District, Pingguo Aluminum Company, Baise City, Guangxi Zhuang Autonomous Region Applicant before: PINGGUO XINGUXIAN PUMP Co.,Ltd. |
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