CN215170819U - Self-suction centrifugal pump set - Google Patents
Self-suction centrifugal pump set Download PDFInfo
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- CN215170819U CN215170819U CN202121067034.4U CN202121067034U CN215170819U CN 215170819 U CN215170819 U CN 215170819U CN 202121067034 U CN202121067034 U CN 202121067034U CN 215170819 U CN215170819 U CN 215170819U
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Abstract
The utility model discloses a self-priming centrifugal pump set, wherein two closed water tanks, namely a main water tank and an auxiliary water tank, are arranged at the inlet of a centrifugal pump, and the inlet of the centrifugal pump is connected with the lower part of the main water tank; the upper part of the main water tank is connected with a water pool through a suction pipeline; the upper part of the auxiliary water tank is connected with the upper part of the main water tank through an upper connecting pipeline; the lower part of the auxiliary water tank is connected with the lower part of the main water tank through a lower connecting pipeline; valves are respectively arranged on the upper connecting pipeline and the lower connecting pipeline; the centrifugal pump, the main water tank and the auxiliary water tank are respectively fixed on the base through bolts. The utility model discloses a from inhaling centrifugal pump group adopts two jar structures at the pump entry, and a main one is assisted, when the unsatisfied upper portion vacuum of main water pitcher, can open and assist the connecting line between the water pitcher, just can keep the vacuum in the jar on the basis of not stopping the pump, guarantees the long-term safe and reliable operation of pump.
Description
Technical Field
The utility model relates to a self-priming centrifugal pump set.
Background
The centrifugal pump is generally incapable of self-priming, and if a self-priming function is required, a vacuum pump is generally adopted for self-priming, but the vacuum pump cannot be used under the influence of the installation environment, the use working condition, the use medium characteristic and the like of the pump, so that the centrifugal pump is required to be adopted.
The self-priming function is realized by adopting a centrifugal pump, and the existing scheme has two types:
referring to fig. 1 and 2, a water tank (tank) 1 'is generally provided at an inlet of a pump, and a suction line 2' is connected to an upper portion of the closed water tank (tank); the suction line 2' can be arranged either outside the water tank (tank) 1' (see fig. 1) or inside the water tank (tank) 1' (see fig. 2). Before starting the pump, the water tank (tank) needs to be filled with water, and the centrifugal pump is also filled with water, and the suction pipeline 2' is connected to the water pool; after the pump is started, the centrifugal pump pumps out the liquid medium in the water tank 1', so that vacuum is formed in the water tank 1', the liquid medium enters the water tank 1' from the inlet pipeline through the atmospheric pressure, and the centrifugal pump realizes the function of a self-priming pump.
Referring to fig. 3, a double-chamber self-priming tank is adopted, and the self-priming tank consists of an upper tank and a lower tank. The upper tank is a discharge tank 11'; the lower canister is a suction canister 12'. The suction line 2 'is connected to a suction tank 12' and the outlet line 4 'of the pump is connected to an upper tank 11'. When the pump is started, the pump sucks liquid from the suction tank 12', discharges the liquid through the discharge tank 11', and draws the liquid from the suction tank 12' to form a vacuum, thereby forming self-priming. An automatic control valve 3' is arranged between the discharge tank 11' and the suction tank 12', and is automatically closed under the action of the discharge pressure of the pump after the pump works normally.
Disadvantages and drawbacks of the prior art:
1. before starting the pump, air exists in the suction pipeline 2', and the air in the suction pipeline 2' enters the water tank, so that the vacuum degree of the water tank is not high, and the centrifugal pump can be subjected to cavitation or can not be self-priming. Especially, the running time is long, air is dissolved in the liquid medium, the air is used for sealing the water tank, the centrifugal pump cannot discharge the air, the more the air is gathered on the upper part of the sealed water tank, and the self-suction of the pump cannot be realized;
2. the double-chamber self-priming tank is adopted, the automatic control valve 3 'is mainly used for automatically compensating liquid from the discharge tank 11' to the suction tank 12 'when the vacuum degree of the suction tank 12' is not high when the suction tank 12 'runs for a long time, and if the running time of the automatic control valve 3' is long, the sealing is not tight, so that the pump always circulates in the tank and water cannot be discharged;
3. the discharge tank 11' of the dual chamber self-priming tank must be mounted to the upper portion of the suction tank 12' and is not conveniently replaced when the automatic control valve 3' is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing a from inhaling centrifugal pump group, adopt two jar structures at the pump entry, a main one is assisted, when main water pitcher unsatisfied upper portion vacuum, can open and assist the connecting tube between the water pitcher, just can keep the vacuum in the jar on the basis of not stopping the pump, guarantee the long-term safe and reliable operation of pump.
The technical scheme for realizing the purpose is as follows: the utility model provides a from inhaling centrifugal pump group, is provided with two airtight water tanks at the entry of centrifugal pump, is main water tank and auxiliary water tank respectively, wherein:
the inlet of the centrifugal pump is connected with the lower part of the main water tank;
the upper part of the main water tank is connected with a water pool through a suction pipeline;
the upper part of the auxiliary water tank is connected with the upper part of the main water tank through an upper connecting pipeline;
the lower part of the auxiliary water tank is connected with the lower part of the main water tank through a lower connecting pipeline;
valves are respectively arranged on the upper connecting pipeline and the lower connecting pipeline;
the centrifugal pump, the main water tank and the auxiliary water tank are respectively fixed on the base through bolts.
In the self-priming centrifugal pump set, the top ends of the main water tank and the auxiliary water tank are respectively provided with a water filling port, an air exhaust port and a manhole.
In the self-priming centrifugal pump set, one end of the suction pipeline is connected with the irrigation opening of the main water tank, and the other end of the suction pipeline is connected with the water tank.
In the self-priming centrifugal pump set, the exhaust port is provided with a stop valve.
The self-priming centrifugal pump set is characterized in that a water tank inlet elbow is arranged at a water filling port of the main water tank, and a flange sealing cover is arranged at a water filling port of the auxiliary water tank.
The self-priming centrifugal pump set is characterized in that the suction pipeline is arranged outside the main water tank.
In the self-priming centrifugal pump set, the suction pipeline is disposed inside the main water tank, and a top end of the suction pipeline extends to an upper portion of the main water tank and a bottom end of the suction pipeline extends to the water tank.
In the self-priming centrifugal pump set, the side walls of the main water tank and the auxiliary water tank are both provided with a water tank liquid level display.
The utility model discloses a from inhaling centrifugal pump group adopts two jar structures at the pump entry, and a main one is assisted, when the unsatisfied upper portion vacuum of main water pitcher, can open and assist the connecting line between the water pitcher, just can keep the vacuum in the jar on the basis of not stopping the pump, guarantees the long-term safe and reliable operation of pump.
Drawings
FIG. 1 is a three-dimensional structure diagram of a centrifugal pump set with a single self-priming tank structure in the prior art (a water suction pipe is arranged outside a water tank);
FIG. 2 is a perspective view of a centrifugal pump set with a single self-priming tank structure in the prior art (a water suction pipe is arranged inside a water tank);
FIG. 3 is a perspective view of a centrifugal pump set with a double chamber self-priming canister structure in the prior art;
fig. 4 is a front view of the self-priming centrifugal pump group of the present invention;
fig. 5 is a top view of the self-priming centrifugal pump group of the present invention;
fig. 6 is a schematic structural view of an outlet pipeline of a centrifugal pump of the self-priming centrifugal pump set of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description is provided with reference to the accompanying drawings:
referring to fig. 4, 5 and 6, in a preferred embodiment of the present invention, a self-priming centrifugal pump assembly, two closed water tanks, i.e., a main water tank 1 and an auxiliary water tank 2, are provided at an inlet of a centrifugal pump 100.
The inlet of the centrifugal pump 100 is connected to the lower part of the main water tank 1; the upper part of the main water tank 1 is connected with a water pool through a suction pipeline 3; the upper part of the auxiliary water tank 2 is connected with the upper part of the main water tank 1 through an upper connecting pipeline 4; the lower part of the auxiliary water tank 2 is connected with the lower part of the main water tank 1 through a lower connecting pipeline 5, valves are respectively arranged on the upper connecting pipeline 4 and the lower connecting pipeline 5, and the valves can be controlled manually or automatically.
The top end of the main water tank 1 is provided with a water filling port 11, an exhaust port 12 and a manhole 13, and the top end of the auxiliary water tank 2 is provided with a water filling port 21, an exhaust port 22 and a manhole 23. The exhaust port 12 and the exhaust port 22 are provided with stop valves. The irrigation opening 11 of the main water tank 1 is provided with a water tank inlet elbow 12, the suction pipeline 3 is arranged outside the main water tank 1, one end of the suction pipeline 3 is connected with the irrigation opening 11 of the main water tank 1 through the water tank inlet elbow 12, and the other end is connected with the water pool. The irrigation opening 21 of the auxiliary water tank 2 is provided with a flange sealing cover, and the irrigation opening 21 is sealed by the flange sealing cover after the auxiliary water tank 2 is filled with water.
The side wall of the main water tank 1 is provided with a water tank liquid level display 14, the side wall of the auxiliary water tank 2 is provided with a water tank liquid level display 24, and the water tank liquid level displays 14 and 24 are used for displaying liquid levels in the water tanks.
The suction pipeline 3 can also be arranged inside the main water tank 1, the top end of the suction pipeline 3 extends to the upper part of the main water tank 1, and the bottom end of the suction pipeline extends to the water pool.
The utility model discloses a from inhaling centrifugal pump group goes up 4 mainly used main water tank 1 and the supplementary water tank 2 between ventilate, and the water path connection between 5 mainly used main water tank of connecting tube 1 and the supplementary water tank 2 down links to each other with main water tank 1, centrifugal pump 100's entry, and centrifugal pump 100's outlet pipeline 101 need not link to each other with main water tank 1 or supplementary water tank 2.
The utility model discloses a from inhaling centrifugal pump group, when the installation, centrifugal pump 100, main water tank 1 and supplementary water tank 2 are fixed on the base through bolt 200 respectively, and the theory of operation is: the centrifugal pump 100 starts to suck water, the pipeline air of the centrifugal pump enters the main water tank 1, the water level of the main water tank 1 is reduced, after the water level is reduced to be lower than the position of the upper connecting pipeline 4 of the auxiliary water tank 2, the water in the auxiliary water tank 2 flows into the main water tank 1 through the lower connecting pipeline 5, and the air in the main water tank 1 flows into the auxiliary water tank 2 through the upper connecting pipeline 4. After water in the auxiliary water tank 2 flows into the main water tank 1, valves on an upper connecting pipeline 4 and a lower connecting pipeline 5 between the main water tank and the auxiliary water tank can be closed; the stop valve of the air outlet 22 of the auxiliary water tank 2 is opened to fill water into the auxiliary water tank 2 from the water filling port 21 and discharge air in the auxiliary water tank 2 from the air outlet 22, and the stop valve of the air outlet 22 is closed after the auxiliary water tank 2 is filled with water, and the water filling port 21 is sealed by a flange seal cover. Then, the valves on the upper connecting pipeline 4 and the lower connecting pipeline 5 between the main water tank 1 and the auxiliary water tank 2 are opened to allow the water in the auxiliary water tank 2 to flow into the main water tank 1. Therefore, redundant air when the water level of the water tank is unstable in operation can be removed, the safe water level of the water tank is provided, and the safe and reliable operation of the pump set is ensured.
The utility model discloses a from inhaling centrifugal pump group is different from the single self priming jar structure among the prior art (see fig. 1 and fig. 2), and single self priming jar structure sets up a jar body at the entry of centrifugal pump, and a jar body operation a period back leads to the air to gather more in a jar internal portion, leads to can not go out water.
The utility model discloses a self-priming centrifugal pump group also is different from the two room self priming jar structures (see figure 3) among the prior art, and two room self priming jar structures need the entry and the export of centrifugal pump all to link to each other with the jar body to will discharge the jar and install the upper portion of suction jar, discharge jar and suction jar and pass through automatic control valve connection, can appear in service that suction jar vacuum can not satisfy the requirement of self-priming vacuum, but discharge jar has outlet pressure, leads to automatic valve can not open, from inhaling the water; if damage occurs, it is easy to cause the pump to circulate in the discharge tank and the suction tank all the time.
The utility model discloses a from inhaling centrifugal pump group is different from the two rooms among the prior art from inhaling a jar structure, and when the lift of centrifugal pump is high, the pressure rating of discharging the jar is high, and the pressure rating that requires to bear to discharging the jar is corresponding high, and its cost is just high. And the utility model discloses a from inhaling centrifugal pump group to the pressure requirement of water tank low, and the lift height of pump is unchangeable to the requirement of water tank.
To sum up, the utility model discloses a from inhaling centrifugal pump group adopts two jar structures at the pump entry, and a main one is assisted, when the unsatisfied upper portion vacuum of main water pitcher, can open and assist the connecting tube between the water pitcher, just can keep the vacuum in the jar on the basis of not stopping the pump, guarantees the long-term safe and reliable operation of pump.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a self-priming centrifugal pump package which characterized in that is provided with two airtight water tanks at the entry of centrifugal pump, is main water tank and auxiliary water tank respectively, wherein:
the inlet of the centrifugal pump is connected with the lower part of the main water tank;
the upper part of the main water tank is connected with a water pool through a suction pipeline;
the upper part of the auxiliary water tank is connected with the upper part of the main water tank through an upper connecting pipeline;
the lower part of the auxiliary water tank is connected with the lower part of the main water tank through a lower connecting pipeline;
valves are respectively arranged on the upper connecting pipeline and the lower connecting pipeline;
the centrifugal pump, the main water tank and the auxiliary water tank are respectively fixed on the base through bolts.
2. The self-priming centrifugal pump set according to claim 1, wherein the top ends of the main water tank and the auxiliary water tank are provided with a water filling port, an air exhaust port and a manhole.
3. The self-priming centrifugal pump group according to claim 2, characterized in that one end of the suction line is connected to the irrigation port of the main tank and the other end is connected to the basin.
4. Self-priming centrifugal pump group according to claim 2, characterized in that the air outlet is provided with a shut-off valve.
5. Self-priming centrifugal pump group according to claim 2, characterized in that the irrigation mouth of the main tank is provided with a tank inlet elbow and the irrigation mouth of the auxiliary tank is provided with a flange sealing cover.
6. Self-priming centrifugal pump group according to claim 1, characterized in that said suction line is arranged outside said main tank.
7. Self-priming centrifugal pump group according to claim 1, characterized in that the suction line is arranged inside the main tank with its top end extending to the upper part of the main tank and its bottom end extending to the basin.
8. Self-priming centrifugal pump group according to claim 1, characterized in that on the side walls of the main and auxiliary tanks there are provided tank level displays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121067034.4U CN215170819U (en) | 2021-05-18 | 2021-05-18 | Self-suction centrifugal pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121067034.4U CN215170819U (en) | 2021-05-18 | 2021-05-18 | Self-suction centrifugal pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215170819U true CN215170819U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121067034.4U Active CN215170819U (en) | 2021-05-18 | 2021-05-18 | Self-suction centrifugal pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215170819U (en) |
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2021
- 2021-05-18 CN CN202121067034.4U patent/CN215170819U/en active Active
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