CN212079664U - Water pump device for brine conveying - Google Patents
Water pump device for brine conveying Download PDFInfo
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- CN212079664U CN212079664U CN202020425093.3U CN202020425093U CN212079664U CN 212079664 U CN212079664 U CN 212079664U CN 202020425093 U CN202020425093 U CN 202020425093U CN 212079664 U CN212079664 U CN 212079664U
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- mechanical seal
- brine
- way valve
- water
- injection pipe
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Abstract
The utility model provides a water pump device for brine is carried for solve the problem that the time sealing water injection pipe and mechanical seal freeze easily when temperature is low winter. The mechanical seal is communicated with the mechanical seal water injection pipe through a three-way valve, a first end a of the three-way valve is connected with the mechanical seal, a second end b of the three-way valve is connected with the mechanical seal water injection pipe, and a third end c of the three-way valve is used as a cooling water discharge port. When the water pump normally operates, when the three-way valve is opened, the first end a and the second end b are communicated, and the machine seal water injection pipe injects cooling water into the mechanical seal to cool and lubricate the mechanical seal. When the motor is shut down due to low air temperature in winter, the three-way valve is closed, the first end a is communicated with the third end c, cooling water in the mechanical seal is squeezed out by brine pressure in the pump body, and the cooling water is discharged through the drain valve. The mechanical seal and the mechanical seal water injection pipe are prevented from being frozen in winter, the equipment failure rate is reduced, the operation is simple, and the safety is high.
Description
Technical Field
The utility model relates to an equipment protection technical field especially relates to a water pump device for brine conveying.
Background
A system before the production of the potash fertilizer adopts a caisson type pump station. The water pump adopts mechanical seal to seal water, and the pumped medium is brine. In a system before potash fertilizer production, a caisson type pump station is widely applied, a water pump used by the system adopts mechanical seal to seal water, the pumped medium is brine, the brine contains fine salt crystals, friction damage is easily caused to a static ring and a moving ring of the mechanical seal during high-speed operation, and the mechanical seal must use fresh water to cool and lubricate in use so as to ensure the use effect and the service life of the mechanical seal. Mechanical seal is the key part of water pump, and when mechanical seal damaged, the brine can get into the bearing box in a large number and pollute lubricating oil to lead to the bearing to damage. About 30% of the water pump failures are caused by mechanical seal failures, and fresh water is used for cooling and lubricating the mechanical seal in use to ensure the use effect and the service life of the mechanical seal.
The mechanical seal water injection pipe for injecting fresh water to the mechanical seal adopts a straight pipe for supplying water. Because the water consumption of the mechanical seal is limited, the water consumption is generally thinner, the freeze prevention in winter is difficult, under the condition that the water pump normally operates, water flows in the pipeline and cannot be frozen, once the power failure of the line occurs, fresh water stays in the pipeline and the mechanical seal cavity when the temperature is low in winter, and is easy to freeze, so that the water pump cannot operate.
In the prior art, brine is injected into a fresh water pipeline to prevent freezing, but fresh water from a water injection pipe of a machine seal to a mechanical seal cavity cannot be discharged, and the mechanical seal is easy to freeze. The stable operation of production is greatly influenced by methods such as torch baking, baking cotton yarn by pouring gasoline or diesel oil, or boiling water scalding.
An object of the utility model is to provide a brine is carried and is used water pump unit to the easy problem that freezes of mechanical seal, avoids mechanical seal to freeze, influences production.
SUMMERY OF THE UTILITY MODEL
The first technical proposal of the utility model is a water pump device for brine conveying, which comprises a pump body 10, a motor 6 and a bearing box 7, wherein the bearing box 7 is arranged at one side of the pump body 10, the motor 6 is arranged on the bearing box 7, a motor shaft 5 passes through the bearing box 7 and is supported by two bearings 8 in the bearing box 7, the motor shaft 5 extends into the pump body 10 and is connected with an impeller 11, the motor 6 drives the impeller 11 to rotate through the motor shaft 5 to convey brine,
a mechanical seal 9 is arranged on one side of the pump body 10 close to the bearing 8 to prevent the brine in the pump body 10 from entering the bearing box 7,
the mechanical seal 9 is communicated with the mechanical seal water injection pipe 3 through a three-way valve 4, a first end a of the three-way valve 4 is connected with the mechanical seal 9, a second end b is connected with the mechanical seal water injection pipe 3, a third end c is used as a cooling water discharge port,
when three way valve 4 was opened, first end an and second end b intercommunication, machine seal water injection pipe 3 injected the cooling water to mechanical seal 9, cooled off and lubricated mechanical seal 9, and when motor 6 shut down, closed three way valve 4, first end an and third end c intercommunication utilize brine pressure in the pump body 10 to extrude mechanical seal 9 internal cooling water.
The second technical scheme is based on first technical scheme, and brine is carried and is used for pumping salt lake brine into the pump hole with water pump device, and when motor 6 shut down, the brine pressure in the pump body 10 is produced by the brine in the pump hole.
Drawings
FIG. 1 is a schematic structural view of a water pump device for conveying brine according to the present invention;
1, a water pump; 2, fresh water pipeline; 3, mechanically sealing a water injection pipe;
4, a three-way valve; 5, a motor shaft; 6, a motor; 7, a bearing box;
8, a bearing; 9, mechanical sealing; 10, a pump body; 11, impeller
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is the utility model discloses water pump device for brine is carried structural schematic.
As shown in fig. 1, the utility model discloses water pump mechanical seal freeze-proof device includes: the fresh water pipeline comprises a water pump 1, a fresh water pipeline 2, a machine seal water injection pipe 3 and a three-way valve 4.
The water pump 1 comprises a pump body 10, a bearing box 7, a bearing 8, a motor shaft 5, a motor 6, a mechanical seal 9 and an impeller 11. Bearing box 7 sets up in one side of the pump body 10, and motor 6 installs on bearing box 7, and motor shaft 5 passes bearing box 7 and is supported by two bearings 8 in the bearing box 7, and motor shaft 5 extends to the pump body 10 inside and is connected with impeller 11, passes through motor shaft 5 by motor 6 and drives impeller 11 rotatory, carries brine.
Due to the relative movement (clearance) between the motor shaft 5 and the pump body 10, a mechanical seal 9 is provided on the side of the pump body 10 adjacent to the bearing 8 in order to prevent the liquid in the pump body 10 from flowing into the bearing housing along the shaft 8. Fresh water is injected into the cavity of the mechanical seal 9 to cool and lubricate the mechanical seal 9.
The machine seal water injection pipe 3 is used for injecting fresh water into the cavity of the mechanical seal 9. Mechanical seal 9 passes through three way valve 4 and mechanical seal water injection pipe 3 intercommunication, and three way valve 4's first end a is connected with mechanical seal 9, and second end b is connected with mechanical seal water injection pipe 3, and third end c is as the cooling water drainage port.
When three way valve 4 was opened, first end a and second end b intercommunication, the passageway between machine seal water injection pipe 3 to mechanical seal 9 was opened, and third end c is closed, and machine seal water injection pipe 3 pours into the cooling water into to mechanical seal 9, cools off and lubricates mechanical seal 9. When the three-way valve 4 is closed, the first end a is communicated with the third end c, the mechanical seal water injection pipe 3 cannot inject cooling water into the mechanical seal 9, and the brine pressure in the pump body 10 extrudes the cooling water in the mechanical seal 9 from the third end c.
When the water pump 1 operates, the water inlet valve of the fresh water pipeline 2 and the three-way valve 4 are opened, the first end a and the second end b of the three-way valve 4 are communicated, the machine seal water injection pipe 3 injects fresh water into the mechanical seal 9, and the mechanical seal 9 is cooled and lubricated to ensure the use effect and the service life of the mechanical seal 9.
When the water pump 1 stops, the three-way valve 4 is closed, and the first end a is communicated with the third end c, namely communicated with the cooling water discharge port. The average brine height outside the caisson-type pump station is greater than the total height of the pump body 10, and the brine density is greater than the fresh water density. When the cooling water discharge port at the third end c is opened, brine is reversely ejected out of the cavity of the mechanical seal 9 and the mechanical seal water injection pipe 3 by the brine pressure in the pump body 10 due to unbalance of internal and external pressures, and fresh water is discharged through the cooling water discharge port at the third end c.
Therefore, after the water pump 1 is shut down, the cavity of the mechanical seal 9 and the machine seal water injection pipe 3 are filled with brine. When the temperature is too low in winter, the problem that the mechanical seal 9 is frozen can be effectively avoided, and the normal operation of the water pump is ensured.
From above knowing, this technical scheme seals water injection pipe and the easy frozen problem of mechanical seal when winter temperature is low, with mechanical seal 9 through three way valve 4 with machine seal water injection pipe 3 intercommunication, three way valve 4's first end a is connected with mechanical seal 9, second end b is connected with machine seal water injection pipe 3, third end c is as the cooling water discharge port. When the water pump normally operates, when the three-way valve 4 is opened, the first end is communicated with the second end, and the machine seal water injection pipe 3 injects cooling water into the mechanical seal 9 to cool and lubricate the mechanical seal 9. When the motor 6 stops working due to too low temperature in winter, the three-way valve 4 is closed, the first end a is communicated with the third end c, cooling water in the mechanical seal 9 is squeezed out by using brine pressure in the pump body 10, and the cooling water is discharged through the drain valve. The mechanical seal and the mechanical seal water injection pipe are prevented from being frozen in winter, the equipment failure rate is reduced, the operation is simple, and the safety is high.
The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes and alternatives that can be easily obtained by those skilled in the art within the technical scope described in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides a brine is carried and is used pumping plant which characterized in that: comprises a pump body (10), a motor (6) and a bearing box (7), wherein the bearing box (7) is arranged on one side of the pump body (10), the motor (6) is arranged on the bearing box (7), a motor shaft (5) passes through the bearing box (7) and is supported by two bearings (8) in the bearing box (7), the motor shaft (5) extends to the inside of the pump body (10) and is connected with an impeller (11), the motor (6) drives the impeller (11) to rotate through the motor shaft (5) to convey brine,
a mechanical seal (9) is arranged on one side of the pump body (10) close to the bearing (8) to prevent brine in the pump body (10) from entering the bearing box (7),
the mechanical seal (9) is communicated with the mechanical seal water injection pipe (3) through a three-way valve (4), a first end (a) of the three-way valve (4) is connected with the mechanical seal (9), a second end (b) is connected with the mechanical seal water injection pipe (3), a third end (c) is used as a cooling water discharge outlet,
when three way valve (4) were opened, first end and second end intercommunication, machine seal water injection pipe (3) to mechanical seal (9) injection cooling water cools off and lubricates mechanical seal (9), and when motor (6) shut down, closes three way valve (4), first end (a) and third end (c) intercommunication utilize the brine pressure in the pump body (10) will mechanical seal (9) internal cooling water is extruded.
2. The water pump device for brine transfer of claim 1, wherein:
the water pump device for conveying brine is used for pumping salt lake brine into the pump pit, and when the motor (6) is stopped, the brine pressure in the pump body (10) is generated by brine in the pump pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425093.3U CN212079664U (en) | 2020-03-27 | 2020-03-27 | Water pump device for brine conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425093.3U CN212079664U (en) | 2020-03-27 | 2020-03-27 | Water pump device for brine conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212079664U true CN212079664U (en) | 2020-12-04 |
Family
ID=73564680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020425093.3U Active CN212079664U (en) | 2020-03-27 | 2020-03-27 | Water pump device for brine conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212079664U (en) |
-
2020
- 2020-03-27 CN CN202020425093.3U patent/CN212079664U/en active Active
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