CN217481556U

CN217481556U - Internal circulation self-cooling dry-wet dual-purpose submersible slurry pump

Info

Publication number: CN217481556U
Application number: CN202220953506.4U
Authority: CN
Inventors: 薛飞; 陶先帅
Original assignee: Sanlianpump Industry Co ltd
Current assignee: Sanlianpump Industry Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-09-23
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses an inner loop self-cooling is wet dual-purpose type dive sediment stuff pump futilely, the casing overcoat has the cooling jacket, be equipped with the filling opening on the cooling jacket, be equipped with hexagonal plug screw shutoff on the filling opening, form "D" chamber between cooling jacket and the casing, "D" intracavity installation coolant liquid import pipe and coolant liquid back flow, coolant liquid import pipe and coolant liquid back flow pass the lower extreme cover respectively, motor end connecting seat is linked to the lower extreme cover below, cast coolant liquid import and coolant liquid backward flow mouth on the pump end connecting seat, coolant liquid import pipe passes in the coolant liquid import extends to the pump end connecting seat, the coolant liquid back flow passes in the coolant liquid backward flow mouth extends to the pump end connecting seat, motor connecting seat lower extreme connection pump end connecting seat, the pump end connecting seat is connected with the sediment stuff pump end, be equipped with the impeller in the sediment stuff pump, be equipped with the motor in the casing, the output shaft of motor passes motor end connecting seat and pump end connecting seat and impeller connection. The cooling liquid can lubricate the mechanical seal, and the heat dissipation effect is more excellent.

Description

Internal circulation self-cooling dry-wet dual-purpose submersible slurry pump

Technical Field

The utility model relates to a dive sediment stuff pump technical field, in particular to dual-purpose type dive sediment stuff pump is done to inner loop self-cooling.

Background

The submersible slurry pump is a combination of a submersible motor and a slurry pump, is a hydraulic machine with the motor and the water pump coaxial and integrated and working in a submerged medium, and has the advantages of advanced structure, wide through flow channel, strong conveying capacity, excellent material selection and strong corrosion resistance. The multi-phase fluid conveying device is suitable for conveying fluid containing solid particles such as sand, coal slag and tailings, and is mainly used for conveying multi-phase fluid with large solid content in metallurgy, mines, iron and steel plants, thermal power plants and the like.

The existing submersible slurry pump works in multiphase fluid, and because the submerging depth is limited or most of the medium is pumped, the body part of the submersible motor is exposed out of the medium. At this time, the heat generated by the running of the submersible motor can not be effectively dissipated through medium or air conduction, so that the motor is shut down or burnt out due to overhigh temperature rise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an inner loop self-cooling is wet dual-purpose type dive sediment stuff pump futilely is provided.

In order to solve the above problems, the utility model provides a following technical scheme:

the utility model provides an inner loop self-cooling is wet dual-purpose type dive sediment stuff pump futilely, includes the casing, the casing upper end is through the bolt fastening has the upper end cover, the casing lower extreme is through the bolt fastening has the lower extreme, is equipped with the terminal box on the upper end cover, the casing overcoat has the cooling jacket, be equipped with the filling opening on the cooling jacket, be equipped with the shutoff of hexagonal plug screw on the filling opening, form "D" chamber between cooling jacket and the casing, "D" intracavity installation coolant liquid import pipe and coolant liquid back flow, coolant liquid import pipe and coolant liquid back flow pass the lower extreme respectively, motor end connecting seat is linked to the lower extreme below, cast coolant liquid import and coolant liquid back flow on the pump end connecting seat, coolant liquid import pipe passes in the coolant liquid import extends to the pump end connecting seat, the coolant liquid back flow passes in the coolant liquid return flow mouth extends to the pump end connecting seat, motor connecting seat lower extreme is connected pump end connecting seat, the pump end connecting base is connected with the pump end of the slurry pump, an impeller is arranged in the slurry pump, a motor is arranged in the casing, and an output shaft of the motor penetrates through the motor end connecting base and the pump end connecting base to be connected with the impeller.

The utility model discloses a further technique:

preferably, the lower end of the cooling jacket is abutted to the lower end cover, the junction box is sleeved with a pressure ring, the pressure ring is pressed at the upper end of the cooling jacket, and an O-shaped sealing ring is arranged between the pressure ring and the cooling jacket.

Preferably, the upper end pipe orifice of the cooling liquid inlet pipe is higher than the upper end pipe orifice of the cooling liquid return pipe, and the vertical height of the liquid feeding port is higher than the upper end pipe orifice of the cooling liquid return pipe.

Preferably, the motor end connecting seat comprises an upper flange and a lower flange, a Q cavity is formed between the upper flange and the lower flange, the upper flange is connected with the lower end cover, the lower flange is connected with the pump end connecting seat, a P cavity is formed between the lower flange and the pump end connecting seat, a cooling liquid backflow port and a cooling liquid inlet are formed in the upper flange and the lower flange, the cooling liquid backflow port penetrates through the cooling liquid backflow port of the upper flange and the cooling liquid backflow port of the lower flange and extends into the P cavity, a cooling liquid inlet pipe penetrates through the cooling liquid inlet of the upper flange and extends into the Q cavity, and the cooling liquid flows back into the P cavity and enters the cooling liquid inlet pipe through the cooling liquid inlet.

Preferably, a cooling impeller is arranged on an output shaft of the motor, a cooling cover plate is arranged on a lower flange of the motor end connecting seat, the design value of the axial clearance between the cooling cover plate and the cooling impeller is 2.5mm, and the design value of the clearance between blades of the cooling impeller and the cooling cover plate is 0.5 mm.

The beneficial effect of adopting above technical scheme is:

the utility model discloses the coolant liquid adopts conventional car antifreeze solution, and immersible motor and cooling system thereof are the metal-making, and these metals contact with water under high temperature, and the time has all suffered to corrode, can rust, and the antifreeze solution not only can not lead to the fact the corruption to immersible motor cooling system, still has anticorrosive and rust cleaning function, avoids reducing heat dissipation channel's radiating action, guarantees that immersible motor can work within the normal temperature scope.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;

FIG. 1 is a front view of an internal circulation self-cooling dry and wet dual-purpose submersible slurry pump;

FIG. 2 is a schematic view of a portion of a motor end connection mount;

wherein: the cooling device comprises a 1 'O' -shaped sealing ring, a 2 hexagonal plug screw, a 3 cooling jacket, a 4 casing, a 5 cooling liquid inlet pipe, a 6 lower end cover, an 8 cooling impeller, a 11 pump end connecting seat, a 13 slurry pump end, a 14 impeller, a 15 cooling liquid inlet, a 16 cooling liquid return port, a 19 cooling cover plate, a 20 motor end connecting seat, a 21 cooling liquid return pipe, a 22 motor and a 24 pressure ring.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings.

As shown in fig. 1-2, an internal circulation self-cooling dry-wet dual-purpose submersible slurry pump comprises a casing 4, wherein an upper end cover is fixed at the upper end of the casing 4 through a bolt, a lower end cover 6 is fixed at the lower end of the casing 4 through a bolt, a junction box (not marked in the drawing) is arranged on the upper end cover, a cooling jacket 3 is sleeved outside the casing 4, a liquid filling opening is arranged on the cooling jacket 3, a hexagonal screw plug 2 is arranged on the liquid filling opening for plugging, a 'D' cavity is formed between the cooling jacket 3 and the casing 4, a cooling liquid inlet pipe 5 and a cooling liquid return pipe 21 are arranged in the 'D' cavity, the cooling liquid inlet pipe 5 and the cooling liquid return pipe 21 respectively penetrate through the lower end cover 6, a motor 22 end connecting seat 20 is connected below the lower end cover 6, a cooling liquid inlet 15 and a cooling liquid return port 16 are cast on the pump end connecting seat 11, the cooling liquid inlet pipe 5 penetrates through the cooling liquid inlet 15 and extends into the pump end connecting seat 11, coolant liquid back flow 21 passes in coolant liquid backward flow mouth 16 extends to pump end connecting seat 11, pump end connecting seat 11 is connected to motor 22 connecting seat lower extreme, pump end connecting seat 11 is connected with sediment stuff pump end 13, be equipped with impeller 14 in the sediment stuff pump, be equipped with motor 22 in the casing 4, motor 22's output shaft passes motor 22 end connecting seat 20 and pump end connecting seat 11 and is connected with impeller 14.

The coolant is conventional antifreeze for automobiles, and the submersible motor 22 and its cooling system are made of metals which are exposed to water at high temperatures and which corrode and rust over time. The cooling liquid can not only not corrode the cooling system of the submersible motor 22, but also has the functions of corrosion prevention and rust removal, thereby avoiding reducing the heat dissipation function of the heat dissipation channel and ensuring that the submersible motor 22 can work within a normal temperature range.

The cooling liquid can lubricate the mechanical seal on one hand, and on the other hand, the specific heat capacity of the cooling liquid is larger than that of water, so that the heat dissipation effect is more excellent.

The motor 22 connecting seat and the slurry pump end 13 connecting seat are designed in a sectional mode, so that the heat dissipation area is effectively increased, and the axial heat dissipation channel is prolonged. Under the condition that the deflection meets the requirement, the increase of the axial length ensures the safe type that the stator and the rotor do not collide and rub, and the service life of the submersible motor 22 is prolonged. Ensuring that stable operation of the submersible motor 22 is achieved whether dry or wet installation.

The lower end of the cooling jacket 3 is supported on the lower end cover 6, the junction box is sleeved with a pressing ring 24, the pressing ring 24 is pressed at the upper end of the cooling jacket 3, and an O-shaped sealing ring 1 is arranged between the pressing ring 24 and the cooling jacket 3.

The upper end pipe orifice of the cooling liquid inlet pipe 5 is higher than the upper end pipe orifice of the cooling liquid return pipe 21, and the vertical height of the liquid feeding port is higher than the upper end pipe orifice of the cooling liquid return pipe 21.

The motor 22 end connecting seat 20 comprises an upper flange and a lower flange, a Q cavity is formed between the upper flange and the lower flange, the upper flange is connected with the lower end cover 6, the lower flange is connected with the pump end connecting seat 11, a P cavity is formed between the lower flange and the pump end connecting seat 11, a cooling liquid return port 16 and a cooling liquid inlet 15 are arranged on the upper flange and the lower flange, a cooling liquid return pipe 21 penetrates through the cooling liquid return port 16 of the upper flange and the cooling liquid return port 16 of the lower flange and extends into the P cavity, a cooling liquid inlet pipe 5 penetrates through the cooling liquid inlet 15 of the upper flange and extends into the Q cavity, and cooling liquid returns into the P cavity and enters the cooling liquid inlet pipe 5 through the cooling liquid inlet 15.

When the submersible motor is assembled, the through holes are aligned with the through holes on the lower end cover 6 of the submersible motor 22 in advance, and the cooling liquid inlet 15 and the cooling liquid return opening 16 are distinguished.

When the submersible motor 22 operates, the rotor rotates to drive the cooling impeller 8 to rotate, and the antifreeze in the cavity P is sucked from the inlet of the cooling impeller 8, discharged into the cavity Q from the outlet, enters the cavity 3D from the casting hole in the cavity Q, and returns to the cavity P through the return pipe of the cooling jacket 3 and the casting hole of the connecting seat of the motor 22 in sequence. The antifreeze liquid forms closed self-circulation in the cavity P, the cavity Q and the cavity D, is not influenced by the temperature of the conveying medium, and effectively conducts and dissipates heat generated by the operation of the submersible motor 22.

The cooling impeller 8 is arranged on an output shaft of the motor 22, the cooling cover plate 19 is arranged on a lower flange of the end connecting seat 20 of the motor 22, the designed axial clearance between the cooling cover plate 19 and the cooling impeller 8 is 2.5mm, and the designed clearance between blades of the cooling impeller 8 and the cooling cover plate 19 is 0.5 mm.

The cooling impeller 8 and the cooling cover plate 19 are independently designed and added, so that the conduction and heat dissipation rate of the cooling liquid is increased, and the heat generated by the operation of the submersible motor 22 is conducted and dissipated more quickly.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An internal circulation self-cooling dry-wet dual-purpose submersible slurry pump comprises a casing, wherein an upper end cover is fixed at the upper end of the casing through bolts, a lower end cover is fixed at the lower end of the casing through bolts, a junction box is arranged on the upper end cover, and the internal circulation self-cooling dry-wet dual-purpose submersible slurry pump is characterized in that a cooling jacket is sleeved outside the casing, a liquid feeding port is arranged on the cooling jacket, a hexagonal screw plug is arranged on the liquid feeding port in a plugging manner, a 'D' cavity is formed between the cooling jacket and the casing, a cooling liquid inlet pipe and a cooling liquid return pipe are arranged in the 'D' cavity, the cooling liquid inlet pipe and the cooling liquid return pipe respectively penetrate through the lower end cover, a motor end connecting seat is connected below the lower end cover, a cooling liquid inlet and a cooling liquid return port are cast on the pump end connecting seat, the cooling liquid inlet pipe penetrates through the cooling liquid inlet and extends into the pump end connecting seat, the cooling liquid return pipe penetrates through the cooling liquid return port and extends into the pump end connecting seat, the motor is characterized in that the lower end of the motor connecting seat is connected with a pump end connecting seat, the pump end connecting seat is connected with the pump end of a slurry pump, an impeller is arranged in the slurry pump, a motor is arranged in the casing, and an output shaft of the motor penetrates through the motor end connecting seat and the pump end connecting seat to be connected with the impeller.

2. The internal circulation self-cooling wet and dry type submersible slurry pump according to claim 1, wherein the lower end of the cooling jacket is supported by a lower end cover, the junction box is sleeved with a pressing ring, the pressing ring is pressed on the upper end of the cooling jacket, and an O-shaped sealing ring is arranged between the pressing ring and the cooling jacket.

3. The submersible slurry pump as claimed in claim 2, wherein the upper end opening of the coolant inlet pipe is higher than the upper end opening of the coolant return pipe, and the liquid feeding port is vertically higher than the upper end opening of the coolant return pipe.

4. The internal circulation self-cooling wet and dry type submersible slurry pump according to claim 1, wherein the motor end connection base comprises an upper flange and a lower flange, a "Q" cavity is formed between the upper flange and the lower flange, the upper flange is connected with the lower end cover, the lower flange is connected with the pump end connection base, a "P" cavity is formed between the lower flange and the pump end connection base, the upper flange and the lower flange are both provided with a cooling liquid return port and a cooling liquid inlet, the cooling liquid return pipe passes through the cooling liquid return ports of the upper flange and the lower flange and extends into the "P" cavity, the cooling liquid inlet pipe passes through the cooling liquid inlet of the upper flange and extends into the "Q" cavity, and the cooling liquid returns into the "P" cavity and enters the cooling liquid inlet pipe through the cooling liquid inlet.

5. The internal circulation self-cooling wet and dry submersible slurry pump according to claim 1, wherein a cooling impeller is provided on the output shaft of the motor, a cooling cover plate is provided on the lower flange of the motor end connection base, the designed axial clearance between the cooling cover plate and the cooling impeller is 2.5mm, and the designed clearance between the blades of the cooling impeller and the cooling cover plate is 0.5 mm.