CN111664096A - Water replenishing device of centrifugal pump - Google Patents
Water replenishing device of centrifugal pump Download PDFInfo
- Publication number
- CN111664096A CN111664096A CN202010569367.0A CN202010569367A CN111664096A CN 111664096 A CN111664096 A CN 111664096A CN 202010569367 A CN202010569367 A CN 202010569367A CN 111664096 A CN111664096 A CN 111664096A
- Authority
- CN
- China
- Prior art keywords
- water
- water replenishing
- way valve
- impeller
- pipe
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Abstract
The centrifugal pump water supplementing device comprises an impeller shell, a water inlet pipe is arranged in the middle of the impeller shell, a three-way valve is arranged above the impeller shell, the output end of the three-way valve is connected with a return pipe and a drain pipe, the return pipe is communicated with the water inlet pipe, a one-way valve is arranged in the water inlet pipe and is positioned at the front end of the return pipe, and a water supplementing barrel is arranged on one side of the impeller shell; the water replenishing bucket is communicated with the impeller cavity, the water quantity in the water replenishing bucket is larger than the size of the impeller cavity, the normal starting of the impeller is guaranteed, when the impeller in the impeller cavity rotates, water can be thrown into the water replenishing bucket, the floating plate is used for storing water, and the next water consumption is guaranteed; the contact switch is arranged in the water replenishing bucket, and the drain pipe is opened when the water in the water replenishing bucket is larger than the next water replenishing amount, so that the function of automatic drainage is realized, and the next sufficient water replenishing can be ensured.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a water supplementing device of a centrifugal pump.
Background
The water inlet of the centrifugal pump must be filled with water, once the water inlet of the centrifugal pump is free of water, the mechanical seal of the centrifugal pump is broken due to heat generated by high-speed rotation, and therefore the normal operation of the whole water supply system is affected.
Disclosure of Invention
In order to overcome the problems set forth in the background of the invention, the present invention provides a centrifugal pump water replenishing apparatus.
The technical scheme of the invention is as follows: the water supplementing device of the centrifugal pump comprises an impeller shell, a water inlet pipe is arranged in the middle of the impeller shell, a three-way valve is arranged above the impeller shell, the output end of the three-way valve is connected with a return pipe and a drain pipe, the return pipe is communicated with the water inlet pipe, a one-way valve is arranged in the water inlet pipe and is positioned at the front end of the return pipe, one side of the impeller shell is provided with a water supplementing barrel which is communicated with an impeller cavity in the impeller shell through a water supplementing pipe, the inner wall of the water replenishing barrel is provided with a lower limiting baffle ring and an upper limiting baffle ring, the upper limiting baffle ring is positioned above the lower limiting baffle ring, the lower limit baffle ring is higher than the highest point of the impeller cavity, a floating plate is arranged between the lower limit baffle ring and the upper limit baffle ring, the floating plate is provided with a water inlet pipe, and the three-way valve is in signal connection with the one-way valve in the water inlet pipe and the contact switch on the upper limit baffle ring.
Preferably, a water replenishing area and a surplus area are arranged between the lower limiting baffle ring and the upper limiting baffle ring, and the volume of the water replenishing area is equal to that of the impeller cavity.
Preferably, the water replenishing pipe is communicated with the impeller cavity through a water replenishing port, and the water replenishing port is located at the lowest point of the impeller cavity.
Preferably, the check valve is connected to the three-way valve through a first signal, and the three-way valve receives the first signal and is communicated with the return pipe.
Preferably, the contact switch is connected with the three-way valve through a second signal, and the three-way valve receives the second signal and is communicated with the drain pipe.
Preferably, the outer wall of the floating plate is provided with a sealing ring attached to the inner wall of the water replenishing barrel.
Compared with the prior art, the invention has the beneficial effects that:
1. the water replenishing bucket is communicated with the impeller cavity, the water quantity in the water replenishing bucket is larger than the size of the impeller cavity, the normal starting of the impeller is guaranteed, when the impeller in the impeller cavity rotates, water can be thrown into the water replenishing bucket, the floating plate is used for storing water, and the next water consumption is guaranteed;
2. the contact switch is arranged in the water replenishing bucket, and the drain pipe is opened when the water in the water replenishing bucket is larger than the next water replenishing amount, so that the function of automatic drainage is realized, and the next sufficient water replenishing can be ensured.
3. The invention can be realized by the three-way valve and the one-way valve in the water inlet pipe, and when no water passes through the water inlet pipe, in order to prevent the impeller from idling, the drainage is led into the impeller cavity by the return pipe to protect the impeller.
Drawings
FIG. 1 is a schematic structural diagram of a water replenishing device of a centrifugal pump according to an embodiment of the invention;
FIG. 2 is another schematic structural view of FIG. 1;
FIG. 3 is a control schematic diagram of a three-way valve according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a water replenishing barrel according to an embodiment of the invention.
In the above fig. 1-4, 1, the impeller shell; 101. an impeller cavity; 11. a water inlet pipe; 111. a one-way valve; 12. a return pipe; 13. a drain pipe; 14. a water replenishing pipe; 141. a water replenishing port; 2. a three-way valve; 3. a water replenishing bucket; 301. a water replenishing area; 302. a margin region; 31. a lower limiting stop ring; 32. an upper limiting baffle ring; 321. a contact switch; 33. a floating plate; 331. and (4) a sealing ring.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, the centrifugal pump water replenishing device comprises an impeller shell 1, a water inlet pipe 11 is arranged at the middle position of the impeller shell 1, a three-way valve 2 is arranged above the impeller shell 1, the output end of the three-way valve 2 is connected with a return pipe 12 and a drain pipe 13, the return pipe 12 is communicated with the water inlet pipe 11, a one-way valve 111 is arranged in the water inlet pipe 11, the one-way valve 111 is positioned at the front end of the return pipe 12, a water replenishing barrel 3 is arranged at one side of the impeller shell 1, the water replenishing barrel 3 is communicated with an impeller cavity 101 in the impeller shell 1 through a water replenishing pipe 14, a lower limiting baffle ring 31 and an upper limiting baffle ring 32 are arranged on the inner wall of the water replenishing, the lower limit stop ring 31 is higher than the highest point of the impeller cavity 101, a floating plate 33 is arranged between the lower limit stop ring 31 and the upper limit stop ring 32, a water inlet pipe 11 is arranged on the floating plate 33, and the three-way valve 2 is in signal connection with a one-way valve 111 in the water inlet pipe 11 and a contact switch 321 on the upper limit stop ring 32.
In this embodiment, in the state of starting the centrifugal pump first, water is filled into the water replenishing barrel 3, the check valve 111 on the floating plate 33 is opened by the pressure of the water, the water enters the impeller cavity 101 and the water replenishing barrel 3 until the floating plate 33 starts to float upwards, then the centrifugal pump is started, the impeller rotates in the impeller cavity 101 to throw the water into the water replenishing barrel 3 through the water replenishing pipe 14, the floating plate 33 starts to float upwards without abutting against the upper limit stop ring 32, when the negative pressure generated in the impeller cavity 101 starts to adsorb, the water enters the impeller cavity 101 from the water inlet pipe 11 and continues to throw into the water replenishing barrel 3, the floating plate 33 continues to float upwards until the contact switch 321 on the upper limit stop ring 32 is touched, at this time, the port connected with the water drain pipe 13 is opened by the three-way valve 2 to drain water, if the water inlet is blocked or the water cannot enter in other situations, the check valve 111 is closed under the condition that the contact switch 321 is pressed, at this time, the port connected with the drain pipe 13 is closed by the three-way valve 2, and the port connected with the return pipe 12 is opened, so that water is kept in the impeller cavity 101, so as to avoid causing the impeller to idle, after the one-time starting is finished and the one-time starting is finished, the water in the water supplementing barrel 3 originally continues to flow back, the impeller cavity 101 is kept full of water, and the next starting is ensured without watering.
As shown in FIG. 4, a water replenishing region 301 and a residual region 302 are arranged between the lower limit baffle ring 31 and the upper limit baffle ring 32, the volume of the water replenishing region 301 is equal to that of the impeller cavity 101, and the water amount in the water replenishing bucket 3 is ensured to be enough to fill the impeller cavity 101 each time, and the residual amount is remained.
As shown in fig. 1 and 2, the water replenishing pipe 14 is communicated with the impeller cavity 101 through a water replenishing port 141, the water replenishing port 141 is located at the lowest point of the impeller cavity 101, and water is fed from the bottom to reduce bubbles in the impeller cavity 101, so that high vacuum degree after water throwing is ensured.
As shown in fig. 3, the check valve 111 is connected to the three-way valve 2 by a first signal, the three-way valve 2 receives the first signal and is conducted to the return pipe 12, the check valve 111 is closed, and the contact switch 321 is opened, thereby forming a first signal.
As shown in fig. 3, the contact switch 321 is connected to the three-way valve 2 through a second signal, the three-way valve 2 receives the second signal and is connected to the drain pipe 13, the contact switch 321 is turned on by the second signal, and the three-way valve 2 is electrically connected to the first signal and the second signal through a single chip or a PLC.
As shown in fig. 4, a packing ring 331 is provided on the outer wall of the floating plate 33 to be attached to the inner wall of the water replenishing tub 3, and the packing ring 331 can increase the sealing performance between the floating plate 33 and the water replenishing tub 3.
The working principle is as follows: in the state of starting the centrifugal pump firstly, water is filled into the water replenishing barrel 3, the one-way valve 111 on the floating plate 33 is opened due to the pressure of the water, the water enters the impeller cavity 101 and the water replenishing barrel 3 until the floating plate 33 begins to float upwards, then the centrifugal pump is started, the impeller rotates in the impeller cavity 101, the water is thrown into the water replenishing barrel 3 through the water replenishing pipe 14, the floating plate 33 begins to float upwards but does not collide with the upper limit stop ring 32, when the negative pressure generated in the impeller cavity 101 begins to adsorb, the water enters the impeller cavity 101 from the water inlet pipe 11 and continues to be thrown into the water replenishing barrel 3, the floating plate 33 continues to float upwards until the contact switch 321 on the upper limit stop ring 32 is touched, at the moment, the port connected with the water drain pipe 13 is opened by the three-way valve 2, the water is drained, if the water inlet is blocked or the water cannot be filled in other situations, the one-way valve 111 is closed under the condition, at this time, the three-way valve 2 closes the port connected with the drain pipe 13, opens the port connected with the return pipe 12, so that water is retained in the impeller cavity 101 to prevent the impeller from idling, and after the three-way valve is closed after one-time starting, the water originally in the water replenishing barrel 3 continues to flow back, so that the impeller cavity 101 is kept full of water, and water does not need to be poured during the next starting.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (6)
1. Centrifugal pump moisturizing device, its characterized in that, including impeller shell (1), the intermediate position department of impeller shell (1) is equipped with inlet tube (11), the top of impeller shell (1) is equipped with three-way valve (2), the output of three-way valve (2) is connected with back flow (12) and drain pipe (13), back flow (12) with inlet tube (11) intercommunication, be equipped with check valve (111) in inlet tube (11), check valve (111) are located the front end of back flow (12), one side of impeller shell (1) is equipped with moisturizing bucket (3), moisturizing bucket (3) through moisturizing pipe (14) with impeller cavity (101) intercommunication in impeller shell (1), the inner wall of moisturizing bucket (3) is equipped with lower limit retaining ring (31) and upper limit retaining ring (32), upper limit retaining ring (32) are located the top of lower limit retaining ring (31), the lower limiting baffle ring (31) is higher than the highest point of the impeller cavity (101), a floating plate (33) is arranged between the lower limiting baffle ring (31) and the upper limiting baffle ring (32), a water inlet pipe (11) is arranged on the floating plate (33), and the three-way valve (2) is in signal connection with a one-way valve (111) in the water inlet pipe (11) and a contact switch (321) on the upper limiting baffle ring (32).
2. A centrifugal pump water replenishing device according to claim 1, wherein a water replenishing region (301) and a surplus region (302) are provided between the lower limit stop ring (31) and the upper limit stop ring (32), and the volume of the water replenishing region (301) is equal to the volume of the impeller cavity (101).
3. A centrifugal pump water replenishing device according to claim 1, wherein the water replenishing pipe (14) is communicated with the impeller cavity (101) through a water replenishing port (141), and the water replenishing port (141) is located at the lowest point of the impeller cavity (101).
4. A centrifugal pump water replenishing device according to claim 1, characterized in that the one-way valve (111) is connected with the three-way valve (2) through a first signal, and the three-way valve (2) receives the first signal and is communicated with the return pipe (12).
5. The centrifugal pump water replenishing device according to claim 1, wherein the contact switch (321) is connected with the three-way valve (2) through a second signal, and the three-way valve (2) receives the second signal and is communicated with the water discharge pipe (13).
6. Centrifugal pump water replenishing device according to claim 1, wherein the outer wall of the floating plate (33) is provided with a sealing ring (331) which is attached to the inner wall of the water replenishing barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569367.0A CN111664096A (en) | 2020-06-20 | 2020-06-20 | Water replenishing device of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569367.0A CN111664096A (en) | 2020-06-20 | 2020-06-20 | Water replenishing device of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111664096A true CN111664096A (en) | 2020-09-15 |
Family
ID=72389128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010569367.0A Withdrawn CN111664096A (en) | 2020-06-20 | 2020-06-20 | Water replenishing device of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111664096A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125739U (en) * | 1992-06-25 | 1992-12-23 | 李木春 | Self-suction device with compensation |
| CN202250890U (en) * | 2011-10-28 | 2012-05-30 | 山东农业大学 | Ball float valve type automatic sealed water tank water filling equipment for pump station |
| CN102840140A (en) * | 2012-08-16 | 2012-12-26 | 合肥通用机械研究院 | Outer ring type efficient starting system for self-priming pump and starting method thereof |
| CN203114698U (en) * | 2013-03-04 | 2013-08-07 | 绿友机械集团股份有限公司 | Water supplementing device for centrifugal pump station unit |
| GB2531873A (en) * | 2014-11-01 | 2016-05-04 | Gilbert Gilkes & Gordon Ltd | Quick priming pumps |
| CN205605444U (en) * | 2016-05-17 | 2016-09-28 | 山东农业大学 | Simple and easy water filling device of water pump |
| KR20170138901A (en) * | 2016-06-08 | 2017-12-18 | 주식회사 일성 | A vacuum self-priming pump |
| CN208184996U (en) * | 2018-05-02 | 2018-12-04 | 江苏优普保鲜技术有限公司 | A kind of self priming pump with automatic water supplement function |
| CN209976799U (en) * | 2019-04-22 | 2020-01-21 | 如东黄海泵业有限公司 | Water replenishing device of self-priming pump |
-
2020
- 2020-06-20 CN CN202010569367.0A patent/CN111664096A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125739U (en) * | 1992-06-25 | 1992-12-23 | 李木春 | Self-suction device with compensation |
| CN202250890U (en) * | 2011-10-28 | 2012-05-30 | 山东农业大学 | Ball float valve type automatic sealed water tank water filling equipment for pump station |
| CN102840140A (en) * | 2012-08-16 | 2012-12-26 | 合肥通用机械研究院 | Outer ring type efficient starting system for self-priming pump and starting method thereof |
| CN203114698U (en) * | 2013-03-04 | 2013-08-07 | 绿友机械集团股份有限公司 | Water supplementing device for centrifugal pump station unit |
| GB2531873A (en) * | 2014-11-01 | 2016-05-04 | Gilbert Gilkes & Gordon Ltd | Quick priming pumps |
| CN205605444U (en) * | 2016-05-17 | 2016-09-28 | 山东农业大学 | Simple and easy water filling device of water pump |
| KR20170138901A (en) * | 2016-06-08 | 2017-12-18 | 주식회사 일성 | A vacuum self-priming pump |
| CN208184996U (en) * | 2018-05-02 | 2018-12-04 | 江苏优普保鲜技术有限公司 | A kind of self priming pump with automatic water supplement function |
| CN209976799U (en) * | 2019-04-22 | 2020-01-21 | 如东黄海泵业有限公司 | Water replenishing device of self-priming pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111664096A (en) | Water replenishing device of centrifugal pump | |
| CN202109081U (en) | Ball valve | |
| CN110886365A (en) | Novel toilet bowl | |
| CN210240007U (en) | Horizontal mixed flow pump is from inhaling pressure device that intakes | |
| CN110425148B (en) | Pump station starts with vacuum steady voltage moisturizing device | |
| CN212003398U (en) | Novel plastic fuel filter with built-in check valve | |
| CN107654383A (en) | Vacuum self-sucking pot | |
| CN110409575B (en) | Toilet flushing mechanism and flushing control method thereof | |
| CN209083588U (en) | A kind of automatic water device | |
| CN207526696U (en) | Vacuum self-priming apparatus | |
| CN2659982Y (en) | Self-suction water feeder | |
| CN210288574U (en) | Automatic water storage and water utilization device | |
| CN220846733U (en) | Negative pressure type automatic feeding water inlet box and washing machine | |
| CN214362316U (en) | Detergent feeding device and washing machine | |
| CN219797182U (en) | Water storage structure for automatic water replenishing system | |
| CN212281270U (en) | Water tank assembly and dish washing machine | |
| CN220813060U (en) | Negative pressure type automatic multipath feeding water inlet box and washing machine | |
| CN219974833U (en) | Automatic water diversion device of coal mine centrifugal pump | |
| CN219638043U (en) | Closestool flushing system capable of flushing in power failure | |
| CN215210079U (en) | Automatic module and washing machine of puting in of two negative pressure constant volume chambeies | |
| CN218542622U (en) | Water diversion device of mining centrifugal pump | |
| CN212670738U (en) | Overflow anti-siphon valve, closestool flushing system and closestool | |
| CN220588227U (en) | Soft-calling integrated device and dish-washing machine | |
| CN219570349U (en) | High-efficiency energy-saving synchronous discharging and sucking self-priming pump | |
| CN214417160U (en) | New enzyme liquid filling mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200915 |
|
| WW01 | Invention patent application withdrawn after publication |