CN213744022U

CN213744022U - Heat dissipation shield pump

Info

Publication number: CN213744022U
Application number: CN202022897670.1U
Authority: CN
Inventors: 陈斌
Original assignee: Zhejiang Wigo Co ltd
Current assignee: Zhejiang Weige Intelligent Pump Industry Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-20
Anticipated expiration: 2030-12-04

Abstract

The utility model provides a heat dissipation canned motor pump belongs to canned motor pump technical field. The pump solves the problems that when the existing shielding pump delivers a medium with higher temperature, the medium flows back to the pump body to cause the pump body to heat up, and the performance and the service life of the pump body are influenced. This heat dissipation canned motor pump, including the pump body and set up the stator in the pump body, pivot and impeller, pivot and stator pass through the separation sleeve and separate, the impeller is connected in the pivot front end, inlet port and discharge port still have on the pump body, discharge port department is connected with the back flow that makes the medium flow back to in the pump body, the outside cover of back flow is equipped with and is used for the refrigerated cooling device of medium in the back flow pipe, cooling device is including cooling sleeve and closing cap, circumference interval is equipped with a plurality of cooling bath on the tip that the closing cap was installed to the cooling sleeve, each cooling bath all has the refrigerated coolant liquid of medium in can being to the back flow pipe. The utility model has the advantages of ingenious design, convenient disassembly, convenient maintenance and good cooling effect.

Description

Heat dissipation shield pump

Technical Field

The utility model belongs to the technical field of the canned motor pump, a canned motor pump is related to, in particular to heat dissipation canned motor pump.

Background

The canned motor pump connects the pump and the motor together, the rotor of the motor and the impeller of the pump are fixed on the same shaft, the rotor of the motor and the stator are separated by the canned sleeve, the rotor runs in the conveyed medium, the power is transmitted to the rotor through the magnetic field of the stator, and then the rotor drives the impeller to rotate, thereby realizing the conveyance of the medium.

The existing canned motor pump is only used for conveying medium at normal temperature, and when the medium with higher temperature is conveyed, the medium flows back into the pump body, so that the temperature of the pump body is increased, and the performance and the service life of the pump body are influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a heat dissipation shield pump that has the cooling effect, reinforcing performance and improve life.

The purpose of the utility model can be realized by the following technical proposal: a heat-dissipation shield pump comprises a pump body, a stator, a rotating shaft and an impeller, wherein the stator, the rotating shaft and the impeller are arranged in the pump body, the rotating shaft and the stator are separated by an isolation sleeve, the impeller is connected to the front end of the rotating shaft, the pump body is further provided with an inlet and an outlet, the outlet is connected with a return pipe which enables a medium to flow back into the pump body, the heat-dissipation shield pump is characterized in that a cooling device used for cooling the medium in the return pipe is sleeved outside the return pipe, the cooling device comprises a cooling sleeve and a sealing cover, the sealing cover is arranged at the front end of the cooling sleeve, the middle parts of the sealing cover and the cooling sleeve are respectively provided with through holes for the return pipe to pass through, a plurality of cooling grooves are circumferentially arranged on the end part of the cooling sleeve, the cooling grooves axially extend into the cooling sleeve, and cooling liquid capable of cooling the medium in the return pipe is arranged in each cooling groove, the inner end part of the sealing cover is provided with a groove which is inwards sunken and is used for the end part of the cooling sleeve to be connected, the groove wall of the groove is axially and convexly provided with a limiting convex shaft at the position corresponding to each cooling groove, and a sealing mechanism is arranged between the outer wall of the limiting convex shaft and the groove wall of the cooling groove.

In the above heat-dissipating shield pump, the front end of each of the limiting protruding shafts has a protruding shaft protruding outward in the axial direction, the outer diameter of the protruding shaft is smaller than the outer diameter of the limiting protruding shaft, a step groove is formed inward in the radial direction on the inner peripheral wall of the notch of each of the cooling grooves, the step groove enables the inner peripheral wall of the cooling groove to form a step portion protruding outward in the radial direction, and when the sealing cover is mounted on the end of the cooling sleeve, the sealing mechanism is located in the step groove between the limiting protruding shaft and the step portion.

In a foretell heat dissipation canned motor pump, sealing mechanism constitute by O type sealing washer, pressure spring and sealing nut, O type sealing washer laminate on the terminal wall of spacing protruding axle and the cell wall of step groove, sealing nut and the outer wall threaded connection of bellying axle, pressure spring be located between O type sealing washer and the sealing nut and hug closely mutually with O type sealing washer along with the tightening of sealing nut.

In the above heat dissipation shield pump, a waterproof sealing gasket is disposed between the sealing nut and the end wall of the step portion.

In the above heat-dissipating shield pump, a plurality of sealing elements for sealing are arranged between the cooling sleeve and the limiting protruding shaft.

In the above-mentioned heat dissipation shield pump, the position department that just corresponds each cooling tank on the periphery wall of cooling sleeve all is connected with the pipe that lets in that supplies the coolant liquid to let in, the position department that just corresponds each cooling tank on the rear end portion of cooling sleeve all is connected with the discharge pipe that supplies the coolant liquid to discharge.

In the heat dissipation shield pump, the cover and the cooling sleeve are fixedly connected together through a fixing bolt.

Compared with the prior art, the heat dissipation shield pump has the following advantages: compare simple structure's cooling device among traditional canned pump, this canned pump adopts the mode of components of a whole that can function independently, utilize sealing mechanism and a plurality of sealing member to guarantee the leakproofness, prevent that the coolant liquid from leaking, cooling device among the traditional canned pump uses the sleeve design of integral type, directly overlap and locate on the back flow, directly fill into the coolant liquid in the sleeve, and do not do abundant sealed design between sleeve and the back flow, the coolant liquid is very easily leaked, when this canned pump is solving above-mentioned problem, can also realize convenient the dismantlement of cooling device, the advantage of the maintenance of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the heat dissipation shield pump.

Fig. 2 is a schematic structural diagram of a cover in the heat-dissipating shield pump.

Fig. 3 is an enlarged schematic view of the heat-dissipating shield pump at a point a in fig. 1.

In the figure, 1, a pump body; 2. a stator; 3. a rotating shaft; 4. an impeller; 5. an isolation sleeve; 6. an inlet port; 7. an outlet port; 8. a return pipe; 9. cooling the sleeve; 10. sealing the cover; 11. a cooling tank; 12. a limit convex shaft; 13. a protruding shaft; 14. a step groove; 15. a step portion; 16. an O-shaped sealing ring; 17. a compression spring; 18. a sealing nut; 19. a waterproof sealing gasket; 20. a seal member; 21. introducing a pipe; 22. a discharge pipe; 23. and a screw hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the heat dissipation shield pump comprises a pump body 1, a stator 2, a rotating shaft 3 and an impeller 4 which are arranged in the pump body 1, wherein the rotating shaft 3 and the stator 2 are separated by a spacer 5, the impeller 4 is connected to the front end of the rotating shaft 3, the pump body 1 is further provided with an inlet 6 and an outlet 7, the outlet 7 is connected with a return pipe 8 which enables a medium to return to the pump body 1, the outside of the return pipe 8 is sleeved with a cooling device which is used for cooling the medium in the return pipe 8, the cooling device comprises a cooling sleeve 9 and a sealing cover 10, the sealing cover 10 is arranged at the front end part of the cooling sleeve 9, the middle parts of the sealing cover 10 and the cooling sleeve 9 are respectively provided with a through hole for the return pipe 8 to pass through, the end part of the cooling sleeve 9, which is provided with the sealing cover 10, is circumferentially provided with a plurality of cooling grooves 11, each cooling groove 11 axially extends and is arranged in the cooling sleeve 9, each cooling groove 11 is provided with a cooling liquid which can cool the medium in the return pipe 8, the inner end part of the sealing cover 10 is provided with a groove which is inwards sunken and is used for the end part of the cooling sleeve 9 to be connected, the position of the groove wall of the groove corresponding to each cooling groove 11 is axially and convexly provided with a limiting protruding shaft 12, a sealing mechanism is arranged between the outer wall of the limiting protruding shaft 12 and the groove wall of the cooling groove 11, the front end part of each limiting protruding shaft 12 is provided with a protruding shaft 13 which axially and outwards protrudes, the outer diameter of the protruding shaft 13 is smaller than the outer diameter of the limiting protruding shaft 12, the inner peripheral wall of the groove opening of each cooling groove 11 is radially and inwards provided with a step groove 14, the step groove 14 enables the inner peripheral wall of the cooling groove 11 to be provided with a step part 15 which radially and outwards protrudes, and when the sealing cover 10 is installed on the end part of the cooling sleeve 9, the sealing mechanism is positioned in the step groove 14 between the limiting protruding shaft 12 and the step part 15.

In more detail, the sealing mechanism is composed of an O-shaped sealing ring 16, a compression spring 17 and a sealing nut 18, the O-shaped sealing ring 16 is attached to the end wall of the limit protruding shaft 12 and the groove wall of the step groove 14, the sealing nut 18 is in threaded connection with the outer wall of the protruding shaft 13, the compression spring 17 is located between the O-shaped sealing ring 16 and the sealing nut 18 and is tightly attached to the O-shaped sealing ring 16 along with the tightening of the sealing nut 18, the O-shaped sealing ring 16 is used for preventing the leakage of the cooling liquid, the cooling device applied to the shield pump in the prior art has a simple structure, although the interior of the cooling device is protected by the sealing ring, the cooling liquid is easily leaked because the sealing ring does not achieve a good tight attaching effect, therefore, the close attaching performance of the O-shaped sealing ring 16 can be greatly improved through the arrangement of the compression spring 17 and the sealing nut 18 in the sealing mechanism, the sealing effect of the O-shaped sealing ring 16 is improved, and a waterproof sealing gasket 19 is arranged between the sealing nut 18 and the end wall of the step part 15, the setting of waterproof seal ring 19 is further realized preventing the leakage effect to the coolant liquid in the cooling bath 11, form a transition layer simultaneously between sealing nut 18 and step portion 15, prevent the problem that direct contact between them leads to the terminal surface wearing and tearing, waterproof seal ring 19 is for dismantling, can take out after lifting closing cap 10 when needing to be changed, be equipped with the sealing member 20 that a plurality of played the sealing effect between cooling sleeve 9 and the spacing protruding axle 12, the setting of multilayer sealing member 20 prevents that the coolant liquid from leaking, strengthen sealed effect.

In more detail, the peripheral wall of the cooling sleeve 9 and the positions corresponding to the cooling grooves 11 are connected with an inlet pipe 21 for the cooling liquid to enter, the rear end of the cooling sleeve 9 and the positions corresponding to the cooling grooves 11 are connected with an outlet pipe 22 for the cooling liquid to be discharged, the cooling liquid is circulated in the cooling grooves 11 through the connection arrangement of the inlet pipe 21 and the outlet pipe 22, the cooling effect on the high-temperature medium in the return pipe 8 is achieved, the flow stability of the cooling liquid circulating and flowing in the cooling grooves 11 is ensured through the arrangement of the sealing mechanism and the plurality of sealing elements 20, the cooling liquid cannot leak, and the optimal cooling effect is achieved.

In a further detail, the seal cover 10 and the cooling sleeve 9 are fixedly connected together through a fixing bolt, the seal cover 10 and the cooling sleeve 9 are respectively provided with a plurality of screw holes 23, the screw holes 23 on the seal cover 10 are formed between two adjacent limiting convex shafts 12, and the screw holes 23 on the cooling sleeve 9 are in one-to-one correspondence with the screw holes 23 on the seal cover 10, so that the connection of the fixing bolt is facilitated.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a heat dissipation canned motor pump, includes the pump body (1) and sets up stator (2), pivot (3) and impeller (4) in the pump body (1), pivot (3) and stator (2) separate through spacer sleeve (5), impeller (4) connect in pivot (3) front end, the pump body (1) on still have inlet port (6) and discharge port (7), discharge port (7) department be connected with back flow (8) that make the medium flow back to in the pump body (1), its characterized in that, back flow (8) outside cover be equipped with and be used for the refrigerated cooling device of medium in back flow (8), cooling device including cooling sleeve (9) and closing cap (10), closing cap (10) install in the front end of cooling sleeve (9), closing cap (10) and cooling sleeve (9) middle part equallyd divide and do not have the through-hole that supplies back flow (8) to pass through, the cooling sleeve is characterized in that a plurality of cooling grooves (11) are circumferentially arranged on the end part of the cooling sleeve (9) provided with the sealing cover (10) at intervals, each cooling groove (11) axially extends to be arranged inside the cooling sleeve (9), cooling liquid capable of cooling a medium in the return pipe (8) is arranged in each cooling groove (11), a groove which is sunken inwards and used for the end part of the cooling sleeve (9) to be connected is arranged at the inner end part of the sealing cover (10), a limiting convex shaft (12) is axially and convexly arranged on the groove wall of the groove corresponding to the position of each cooling groove (11), and a sealing mechanism is arranged between the outer wall of the limiting convex shaft (12) and the groove wall of the cooling groove (11).

2. The heat-dissipating shield pump according to claim 1, wherein the front end of each of the limit protruding shafts (12) has a protruding shaft (13) protruding outward in the axial direction, the outer diameter of the protruding shaft (13) is smaller than the outer diameter of the limit protruding shaft (12), a step groove (14) is formed inward in the inner peripheral wall of the notch of each of the cooling grooves (11), the step groove (14) forms a step portion (15) protruding outward in the radial direction on the inner peripheral wall of the cooling groove (11), and when the cap (10) is mounted on the end of the cooling sleeve (9), the sealing mechanism is located in the step groove (14) between the limit protruding shaft (12) and the step portion (15).

3. The heat-dissipation shield pump as recited in claim 2, wherein the sealing mechanism is composed of an O-ring (16), a compression spring (17) and a sealing nut (18), the O-ring (16) is attached to the end wall of the limit protruding shaft (12) and the wall of the stepped groove (14), the sealing nut (18) is in threaded connection with the outer wall of the protruding shaft (13), and the compression spring (17) is located between the O-ring (16) and the sealing nut (18) and is attached to the O-ring (16) along with the tightening of the sealing nut (18).

4. A heat-dissipating shield pump according to claim 3, characterized in that a waterproof gasket (19) is provided between the sealing nut (18) and the end wall of the step (15).

5. A heat-dissipating shield pump according to claim 1, characterized in that a plurality of sealing elements (20) are provided between the cooling jacket (9) and the limiting protruding shaft (12).

6. The heat-dissipating shield pump of claim 1, wherein an inlet pipe (21) for introducing the cooling liquid is connected to the outer peripheral wall of the cooling sleeve (9) at a position corresponding to each cooling groove (11), and a discharge pipe (22) for discharging the cooling liquid is connected to the rear end of the cooling sleeve (9) at a position corresponding to each cooling groove (11).

7. A heat-dissipating shield pump according to claim 1, characterized in that the cover (10) and the cooling jacket (9) are fixedly connected together by means of fixing bolts.