CN210715136U - Straight-through centrifugal pump - Google Patents
Straight-through centrifugal pump Download PDFInfo
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- CN210715136U CN210715136U CN201921586902.2U CN201921586902U CN210715136U CN 210715136 U CN210715136 U CN 210715136U CN 201921586902 U CN201921586902 U CN 201921586902U CN 210715136 U CN210715136 U CN 210715136U
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Abstract
The utility model discloses a straight-through centrifugal pump, which comprises a first cylinder, wherein a first piston is arranged in the first cylinder, and a first spring is arranged at the end part of the first piston; the first piston is connected with the first valve core, wherein one side of the first valve core is provided with a first pipeline; the first pipeline is connected with a second pipeline; the first cylinder is connected with a third pipeline through a first communication pipeline, wherein the third pipeline is connected and/or communicated with a tee joint; the third channel is connected to a second cylinder through a second communication pipeline; and a second piston is arranged in the second cylinder. After the straight-through centrifugal pump is started, the suction and outlet runners of the pump are converted into the straight-through runners, the runners are short and have no turn, the shapes of the runners are regular and streamline, the hydraulic loss of the pump is reduced, the operating efficiency of the pump is improved, and therefore the consumption of energy sources such as electric energy is saved; after the pump is started, the flow passage of the suction inlet and the discharge outlet of the pump can be converted into a straight-through type, and the high-efficiency operation is recovered.
Description
Technical Field
The utility model relates to a centrifugal pump, in particular to through centrifugal pump.
Background
A centrifugal pump (centrifugal pump) is a pump that transfers a liquid by centrifugal force generated when an impeller rotates; centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell.
The self-priming centrifugal pump produced in the pump industry at present mainly adopts the technology of an internal mixing type and an external mixing type, and has the structural characteristics that: in order to achieve self-suction, a suction flow passage of the pump is long, turns are multiple, and the shape is irregular, a gas-liquid separation chamber is arranged at the outlet of the pump, so that the flow passage at the outlet of the pump body is suddenly enlarged, and the enlarged cavity is irregular in shape; the existing self-priming centrifugal pump has the defects that after the pump completes the self-priming process and works formally, the pump has large hydraulic loss due to long suction flow channel, more corners and irregular shape; the existing self-priming centrifugal pump has the defects that after the pump completes the self-priming process and works formally, a flow channel at the outlet of a pump body is suddenly enlarged due to the fact that a gas-liquid separation chamber is arranged at the outlet of the pump, and the enlarged chamber is irregular in shape, so that great hydraulic loss is caused; compared with the common centrifugal pump under the same performance condition, the efficiency of the existing self-priming centrifugal pump is lower by 10-15%; the existing common centrifugal pump can not automatically remove air when in work.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects of the prior art, and aims to solve the problems that after the existing self-priming centrifugal pump works formally, the suction flow channel of the pump is long, turns are more, the shape is irregular, and great hydraulic loss is caused; the self-priming centrifugal pump aims to solve the problems that after the existing self-priming centrifugal pump works formally, a steam-liquid separation chamber enables an outlet flow channel of a pump body to be suddenly enlarged, and the shape of an enlarged cavity is irregular, so that great hydraulic loss is caused; in order to solve the defect that the air can not be automatically removed when the existing common centrifugal pump works, a straight-through centrifugal pump is provided.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a straight-through centrifugal pump, which comprises a first cylinder, wherein,
a first piston is installed in the first cylinder, and a first spring is installed at the end part of the first piston;
the first piston is connected with the first valve core, wherein,
a first pipeline is arranged on one side of the first valve core;
the first pipeline is connected with a second pipeline;
the first cylinder is connected with a third pipeline through a first communication pipeline, wherein,
the third pipeline is connected and/or communicated with a tee joint;
the tee joint is connected to a second cylinder through a second communication pipeline;
a second piston is installed in the second cylinder, wherein,
a second spring is arranged at the end part of the second piston;
the second piston is connected with the second valve core.
As a preferable technical proposal of the utility model, one end part of the first pipeline is provided with a first suction port, the first valve core is provided with a first through cavity, wherein,
the first suction port is in communication with the first through cavity when the first spring is fully deployed;
the end part of the first valve core is provided with a second suction inlet, wherein,
the second intake port communicates with a passage in the first spool when the first spring is fully compressed.
As a preferable technical proposal of the utility model, the second valve core is provided with a second through cavity, wherein,
the second through cavity corresponds to and is communicated with a first exhaust port when the second spring is completely unfolded;
one end of the second valve core is provided with a second discharge port, wherein,
the second exhaust port communicates with a passage in the second spool when the second spring is fully compressed.
As a preferred technical solution of the present invention, a first piston rod is mounted at an end of the first piston;
and a second piston rod is arranged at the end part of the second piston.
As a preferred technical solution of the present invention, the first communicating pipe is connected to the first cylinder through a first communicating pipe;
the second communicating pipeline is connected with the second cylinder through a second communicating pipeline.
As a preferable technical proposal of the utility model, the end part of the first valve core is provided with a liquid inlet, wherein,
the liquid inlet is communicated with a channel in the first valve core.
As a preferred technical solution of the present invention, the connection mode between the first piston and the first valve core includes that the first valve core is sleeved in the first piston;
the second piston is connected with the second valve core in a mode that the second valve core is sleeved in the second piston.
As a preferred technical solution of the present invention, a communicating cavity is formed at a communicating portion between the second suction inlet and the second pipeline;
the second discharge port is communicated with the tee joint.
As an optimized technical scheme of the utility model, one side of second case is provided with vapour-liquid separation room.
As a preferred technical scheme of the utility model, argon arc welding is adopted between the first piston and the first valve core, and between the second piston and the second valve core;
the metal parts of the first piston, the first valve core, the second piston and the second valve core are made of titanium alloy;
the outer sides of the first pipeline and the second pipeline are both provided with a protective device;
the first communicating pipeline and the second communicating pipeline are threaded pipes or memory alloy pipes.
The utility model discloses the beneficial effect who reaches is: after the straight-through centrifugal pump is started, the suction and outlet runners of the pump are converted into the straight-through runners, the runners are short and have no turn, the shape of the runners is regular and streamline, the hydraulic loss of the pump is reduced, the operating efficiency of the pump is greatly improved, and therefore the consumption of energy sources such as electric energy is saved; compared with the common self-priming pump under the same performance condition, the efficiency can be improved by 10-15%, and gas can be automatically discharged while the pump is in operation; the structure is compact, the operation is convenient, the operation is stable, the maintenance is easy, the service life is long, and the self-priming capability is strong; excellent performance, high efficiency and strong bearing capacity; after the pump is started, the flow passage of the suction inlet and the discharge outlet of the pump can be converted into a straight-through type, and the high-efficiency operation is recovered.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
fig. 3 is one of the partial structural schematic diagrams of fig. 1 of the present invention;
fig. 4 is a second partial schematic structural view of fig. 1 according to the present invention;
fig. 5 is a third partial schematic view of fig. 1 according to the present invention;
fig. 6 is one of the partial structural schematic diagrams of fig. 2 of the present invention;
fig. 7 is a second partial schematic structural view of fig. 2 according to the present invention;
fig. 8 is a third schematic view of the partial structure of fig. 2 according to the present invention;
in the figure: 1. a first spring; 2. a first cylinder; 3. a first piston; 4. a first conducting pipe; 5. a first valve spool; 6. a first suction port; 7. a first communicating pipe; 8. a first conduit; 9. a second conduit; 10. a first discharge port; 11. a second through cavity; 12. a second piston rod; 13. a second cylinder; 14. a third pipeline; 15. a tee joint; 16. a second discharge port; 17. a second communicating conduit; 18. a second conducting pipe; 19. a second piston; 20. a second spring; 21. a second valve core; 22. a vapor-liquid separation chamber; 23. a second suction inlet; 24. a first through cavity; 25. a first piston rod; 26. a liquid inlet.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
As shown in fig. 1-8, fig. 1 is a longitudinal sectional view of the present embodiment when starting up, fig. 2 is a longitudinal sectional view of the present embodiment when operating, the present invention provides a straight-through centrifugal pump, which includes a first cylinder 2, wherein a first piston 3 is installed in the first cylinder 2, a first spring 1 is installed at an end of the first piston 3, so that the first piston 3 moves under the movement of the first spring 1, and thus the first valve core 5 moves, and thus whether the first through cavity 24 is communicated with the first suction port 6, and whether the second suction port 23 is communicated with the channel in the first valve core 5 is realized; the first piston 3 is connected with the first valve core 5, wherein one side of the first valve core 5 is provided with a first pipeline 8, and the first pipeline 8 is connected with a second pipeline 9; the first cylinder 2 is connected with a third pipeline 14 through a first communication pipeline 7, wherein the third pipeline 14 is connected and/or communicated with a tee joint 15; the tee joint 15 is connected to the second cylinder 13 through the second communicating pipeline 17, the second piston 19 is installed in the second cylinder 13, the second spring 20 is installed at the end of the second piston 19, the second piston 19 is connected with the second valve spool 21, the second valve spool 21 can be driven to move conveniently through the movement of the second spring 20 and the second piston 19, and whether the first discharge port 10 is communicated with the second through cavity 11 or not and whether the second discharge port 16 is communicated with the tee joint 15 or not are achieved.
Further, one end of the first pipeline 8 is provided with a first suction port 6, the first valve core 5 is provided with a first through cavity 24, wherein the first suction port 6 is communicated with the first through cavity 24 when the first spring 1 is completely unfolded, so that the flow direction of the liquid is controlled; the end of the first valve core 5 is provided with a second suction port 23, wherein the second suction port 23 is communicated with the channel in the first valve core 5 when the first spring 1 is fully compressed, so as to control the flow direction of the liquid.
The second valve core 21 is provided with a second through cavity 11, wherein the second through cavity 11 corresponds to the first discharge port 10 when the second spring 20 is completely unfolded and is communicated with the first discharge port 10 to control the flow direction of the liquid; one end of the second spool 21 is provided with a second drain port 16, wherein the second drain port 16 communicates with a passage in the second spool 21 when the second spring 20 is fully compressed to achieve control of the flow direction of the liquid.
A first piston rod 25 is arranged at the end part of the first piston 3, so that the first piston 3 and the first cylinder 2 can be conveniently matched for operation; the end of the second piston 19 is provided with a second piston rod 12, which is convenient for the operation of the second piston 19 and the second cylinder 13.
The first communicating pipe 7 is connected with the first cylinder 2 through the first communicating pipe 4 so as to facilitate the liquid to flow into the first cylinder 2; the second communicating duct 17 is connected to the second cylinder 13 through a second communicating duct 18 to facilitate the liquid flow into the second cylinder 13.
The end of the first valve core 5 is provided with a liquid inlet 26, wherein the liquid inlet 26 is communicated with a channel in the first valve core 5 to facilitate the inflow of liquid.
The connection between the first piston 3 and the first valve core 5 includes the first valve core 5 sleeved in the first piston 3, and the connection between the second piston 19 and the second valve core 21 includes the second valve core 21 sleeved in the second piston 19, but other connection methods may be used.
The second suction port 23 and the communicating part of the second pipeline 9 form a communicating cavity, and the second discharge port 16 is communicated with the tee joint 15, so that the liquid can conveniently circulate.
And a vapor-liquid separation chamber 22 is arranged on one side of the second valve core 21 to realize vapor-liquid separation and exhaust gas.
Specifically, as shown in fig. 1, during starting, due to the action of the spring force of the first spring 1 in the first cylinder 2, the first piston 3 is located at the rightmost end of the first cylinder 2, the first piston 3 is connected with the first valve core 5 to drive the first valve core 5 to move rightwards, the first through cavity 24 of the first valve core 5 is over against the first suction port 6, so that the first suction port 6 is opened, the second suction port 23 is closed, and at this time, liquid flows into the inlet of the pump sequentially through the liquid inlet 26, the first through cavity 24, the first suction port 6, the first pipeline 8 and the second pipeline 9; similarly, due to the action of the spring force of the second spring 20 in the second cylinder 13, the second piston 19 is located at the uppermost end of the second cylinder 13, the second piston 19 is connected with the second valve core 21 to drive the second valve core 21 to move upwards, the second through cavity 11 of the second valve core 21 is opposite to the first exhaust port 10, so that the first exhaust port 10 is opened, the second exhaust port 16 is closed, and at the moment, the liquid flows out from the outlet of the pump and finally flows out through the second through cavity 11, the first exhaust port 10, the vapor-liquid separation chamber 22, the third pipeline 14 and the tee joint 15 in sequence. At the moment, the structure and the principle of the straight-through type efficient self-priming centrifugal pump are the same as those of a common self-priming pump, the suction and outlet flow channels of the pump are long and complex, the number of turns is large, the hydraulic loss is large, and the operation efficiency is low.
After the straight-through type high-efficiency self-priming centrifugal pump is started, the suction and outlet flow channels of the pump are converted into a straight-through type, as shown in fig. 2, after the straight-through type high-efficiency self-priming centrifugal pump is started, because the first cylinder 2 is connected with the outlet pipeline of the pump through the first communication pipeline 4 and the first communication pipeline 7, when the pump runs, the outlet pressure of the pump rises to a certain value, liquid flows into the first cylinder 2 through the first communication pipeline 7 and the first communication pipeline 4 and pushes the first piston 3 to move leftwards and compress the first spring 1, meanwhile, the first piston 3 drives the first valve core 5 to move leftwards, the first valve core 5 completely blocks the first suction port 6, so that the first suction port 6 is closed, the second suction port 23 is opened, and the purpose that the suction port flow channel is converted into the straight-through. At this time, the liquid flows into the inlet of the pump through the liquid inlet 26, the second suction port 23, and the second pipe 9 in this order. Similarly, because the second cylinder 13 is connected with the outlet pipeline of the pump through the second communicating pipeline 18 and the second communicating pipeline 17, when the pump operates, the outlet pressure of the pump rises to a certain value, liquid flows into the second cylinder 13 through the second communicating pipeline 17 and the second communicating pipeline 18 and pushes the second piston 19 to move downwards and compress the second spring 20, meanwhile, the second piston 19 drives the second valve core 21 to move downwards, the second valve core 21 completely blocks the first outlet 10, so that the first outlet 10 is closed, the second outlet 16 is opened, and the purpose that the outlet flow channel is converted into a straight-through type is achieved, at the moment, the liquid flows out from the outlet of the pump and finally flows out through the second outlet 16 and the tee joint 15. After the straight-through type high-efficiency self-priming centrifugal pump is started, the suction and outlet flow passages of the pump are short and are converted into a straight-through type, so that the hydraulic loss of the pump is greatly reduced, the operating efficiency of the pump is improved, and energy sources such as electric energy are saved.
Argon arc welding is adopted between the first piston 3 and the first valve core 5 and between the second piston 19 and the second valve core 21, so that the connection is more stable and is not easy to damage even in a frequently-used environment; moreover, the metal parts of the first piston 3, the first valve core 5, the second piston 19 and the second valve core 21 are made of titanium alloy, so that the valve is firmer and is not easy to damage even in a frequently used environment; in use, the maintenance and the replacement are carried out regularly, and the durability can be further improved;
the outer sides of the first pipeline 8 and the second pipeline 9 are both provided with a protective device, such as filler, so as to realize a protective effect;
the first and second communication ducts 4 and 18 are threaded pipes or memory alloy pipes, which can improve durability.
The straight-through type high-efficiency self-priming centrifugal pump can automatically remove air while running. When the liquid pumped by the pump contains air, the outlet pressure of the pump is reduced, the more the air is, the smaller the outlet pressure of the pump is, when the air is too much, the liquid flowing into the first communicating pipeline 7 and the first communicating pipeline 4 cannot push the first piston 3, and the liquid flowing into the second communicating pipeline 17 and the second communicating pipeline 18 cannot push the second piston 19. After the gas is exhausted, the pressure of the pump outlet is increased, so that the flow channels of the suction inlet and the discharge outlet of the pump are converted into a straight-through type, and the high-efficiency operation is recovered.
The straight-through type efficient self-priming centrifugal pump has the same structural principle as a common self-priming pump when being started, but after the starting is finished, the suction and outlet flow channels of the pump are converted into straight-through flow channels, the flow channels are short and have no turning, the flow channels are regular in shape and are in a streamline shape, the hydraulic loss of the pump is reduced, the operating efficiency of the pump is greatly improved, and therefore electric energy is saved. Compared with the common self-priming pump under the same performance condition, the efficiency of the straight-through type high-efficiency self-priming centrifugal pump can be improved by 10-15%, and gas can be automatically discharged when the straight-through type high-efficiency self-priming centrifugal pump operates. The self-priming pump has the advantages of compact structure, convenient operation, stable operation, easy maintenance, long service life, stronger self-priming capability and the like, and also has the advantages of excellent performance, high efficiency and strong bearing capability of the conventional centrifugal pump.
After the straight-through centrifugal pump is started, the suction and outlet runners of the pump are converted into the straight-through runners, the runners are short and have no turn, the shape of the runners is regular and streamline, the hydraulic loss of the pump is reduced, the operating efficiency of the pump is greatly improved, and therefore the consumption of energy sources such as electric energy is saved; compared with the common self-priming pump under the same performance condition, the efficiency can be improved by 10-15%, and gas can be automatically discharged while the pump is in operation; the structure is compact, the operation is convenient, the operation is stable, the maintenance is easy, the service life is long, and the self-priming capability is strong; excellent performance, high efficiency and strong bearing capacity; after the pump is started, the flow passage of the suction inlet and the discharge outlet of the pump can be converted into a straight-through type, and the high-efficiency operation is recovered.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A centrifugal pump of the straight-through type, characterized in that it comprises a first cylinder (2) in which,
a first piston (3) is installed in the first cylinder (2), and a first spring (1) is installed at the end part of the first piston (3);
the first piston (3) is connected to a first valve slide (5), wherein,
a first pipeline (8) is arranged on one side of the first valve core (5);
the first pipeline (8) is connected with a second pipeline (9);
the first cylinder (2) is connected with a third pipeline (14) through a first communicating pipeline (7), wherein,
the third pipeline (14) is connected and/or communicated with a tee joint (15);
the tee joint (15) is connected to the second cylinder (13) through a second communicating pipeline (17);
a second piston (19) is mounted in the second cylinder (13), wherein,
a second spring (20) is arranged at the end part of the second piston (19);
the second piston (19) is connected to a second valve element (21).
2. A centrifugal pump of the straight-through type according to claim 1, wherein one end of the first pipe (8) is provided with a first suction port (6), and the first valve spool (5) is provided with a first through chamber (24), wherein,
the first suction port (6) communicates with the first through cavity (24) when the first spring (1) is fully deployed;
the end of the first valve core (5) is provided with a second suction port (23), wherein,
the second suction port (23) communicates with a passage in the first spool (5) when the first spring (1) is fully compressed.
3. A centrifugal straight through pump according to claim 2, wherein the second valve spool (21) is provided with a second through cavity (11), wherein,
the second through cavity (11) corresponds to the first discharge port (10) when the second spring (20) is completely unfolded and is communicated with the first discharge port (10);
one end of the second valve core (21) is provided with a second discharge port (16), wherein,
the second exhaust port (16) communicates with a passage in the second spool (21) when the second spring (20) is fully compressed.
4. A centrifugal straight through pump according to claim 2 or 3, characterized in that the end of the first piston (3) is fitted with a first piston rod (25);
a second piston rod (12) is mounted at the end of the second piston (19).
5. A centrifugal pump according to claim 4, wherein the first communication duct (7) is connected to the first cylinder (2) via a first communication duct (4);
the second communicating pipeline (17) is connected with the second cylinder (13) through a second communicating pipeline (18).
6. A centrifugal straight-through pump according to claim 4, wherein the end of the first valve spool (5) is provided with a liquid inlet (26), wherein,
the liquid inlet (26) is communicated with a channel in the first valve core (5).
7. A centrifugal pump of the flow-through type according to claim 1, characterized in that the connection of the first piston (3) to the first spool (5) comprises the first spool (5) being sleeved in the first piston (3);
the connection mode of the second piston (19) and the second valve core (21) comprises the fact that the second valve core (21) is sleeved in the second piston (19).
8. A centrifugal pump of the straight-through type according to claim 3, characterized in that the communication part of the second suction port (23) with the second pipe (9) forms a communication chamber;
the second discharge port (16) is communicated with the tee joint (15).
9. A centrifugal straight through pump according to claim 1, characterized in that the second valve spool (21) is provided with a vapor-liquid separation chamber (22) on one side.
10. A centrifugal pump according to claim 1 or 5, characterized in that argon arc welding is used between the first piston (3) and the first valve core (5), and between the second piston (19) and the second valve core (21);
the metal parts of the first piston (3), the first valve core (5), the second piston (19) and the second valve core (21) are made of titanium alloy;
the outer sides of the first pipeline (8) and the second pipeline (9) are both provided with a protective device;
the first communicating pipeline (4) and the second communicating pipeline (18) are threaded pipes or memory alloy pipes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921586902.2U CN210715136U (en) | 2019-09-23 | 2019-09-23 | Straight-through centrifugal pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921586902.2U CN210715136U (en) | 2019-09-23 | 2019-09-23 | Straight-through centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486289A (en) * | 2019-09-23 | 2019-11-22 | 重庆星格泵业集团有限公司 | A kind of through type centrifugal pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486289A (en) * | 2019-09-23 | 2019-11-22 | 重庆星格泵业集团有限公司 | A kind of through type centrifugal pump |
| CN110486289B (en) * | 2019-09-23 | 2024-07-05 | 重庆星格泵业集团有限公司 | Straight-through centrifugal pump |
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