Efficient water-cooled shielding electric pump

Abstract

The utility model relates to a high-efficiency water-cooled shielding electric pump, which comprises a pump cavity mechanism comprising a pump body, a front bearing seat and an impeller, the front bearing seat and the pump body are encircled to form a pump cavity, and the impeller is arranged in the pump cavity; the driving mechanism comprises a pump shaft with one end in transmission connection with the impeller, and a front bearing sealing assembly, a rotor assembly, a rear bearing sealing assembly and a rear bearing seat which are sequentially arranged on the pump shaft in a sleeving manner, and a stator assembly is arranged on the outer side of the rotor assembly; the water cooling mechanism comprises a water cooling tank provided with a water inlet and a water outlet and a threaded pipe arranged in the water cooling tank and penetrating through the two ends of the water cooling tank, one end of the threaded pipe is connected with the front bearing seat, and the other end of the threaded pipe is connected with the rear bearing seat. The external water-cooling tank is arranged, cold water can enter and exit from the inlet and outlet formed in the water-cooling tank, a conveying medium in the shielding electric pump and the external water-cooling tank are subjected to back-and-forth water cooling through the threaded pipe, efficient water cooling can be achieved, and the operation cost of the device is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shielded electric pump, specifically relates to a high -efficient water -cooled shielded electric pump. BACKGROUND

[0002] The motor surface cooling of shielded electric pump has two modes: air cooling and water cooling. The air cooling type is to cool the motor surface directly to the air, and its effect is not good, especially in the case that the ambient temperature is relatively high and the surrounding environment has no wind. The water cooling type is to set a cooling water jacket on the motor surface, and the cooling water jacket is water-penetrated to cool the motor surface, and the cooling effect is good, which can better meet the user's requirements, but an additional cooling water system is needed, which increases the user's installation cost and operating cost. Sometimes, the user's site does not provide the condition of cooling water, or it is inconvenient to provide cooling water, and the shielded pump without water cooling cannot effectively reduce the motor surface temperature, which cannot meet the specified explosion-proof requirements. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming at least one of the defects of the prior art and providing a high -efficient water -cooled shielded electric pump.

[0004] The utility model discloses a high -efficient water -cooled shielded electric pump, which can overcome at least one of the defects of the prior art.

[0005] A high -efficient water -cooled shielded electric pump, comprising:

[0006] The pump cavity mechanism comprises a pump body, a front bearing seat that is combined with the pump body to form a pump cavity, and an impeller arranged in the pump cavity.

[0007] The driving mechanism comprises a pump shaft connected with the impeller at one end, a front bearing sealing assembly, a rotor assembly, a rear bearing sealing assembly and a rear bearing seat that are sequentially sleeved on the pump shaft, and a stator assembly is arranged outside the rotor assembly. The front bearing sealing assembly and the rear bearing sealing assembly each contain a bearing seat, a bearing, a shaft sleeve, a thrust disc and a mechanical seal and other accessories.

[0008] The water cooling mechanism comprises a water cooling tank provided with a water inlet and a water outlet, and a threaded pipe arranged in the water cooling tank and penetrating through both ends of the water cooling tank. One end of the threaded pipe is connected with the front bearing seat, and the other end is connected with the rear bearing seat.

[0009] Further, a impeller nut for connecting the pump shaft and the impeller is arranged between the pump shaft and the impeller.

[0010] Further, the front bearing seat is sleeved on the pump shaft, and the front bearing sealing assembly is arranged in the front bearing seat.

[0011] Further, a water filter tank is arranged on the pipeline connected with the rear bearing seat.

[0012] Further, a stator front flange is arranged between the stator assembly and the front bearing seat.

[0013] Further, a stator rear flange is arranged between the stator assembly and the rear bearing seat.

[0014] Further, an exhaust valve is arranged on the rear bearing seat.

[0015] Further, the shielded electric pump is further provided with a junction box electrically connected with the stator assembly.

[0016] Further, the shielded electric pump is further provided with a support body for supporting the stator assembly.

[0017] Further, the support body is a C-shaped support seat.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) The utility model provides a high -efficient water -cooled shielded electric pump, this shielded electric pump is provided with external water cooling jar, cold water can go in and out from the import and export being provided on the water cooling jar, and the conveying medium in the shielded electric pump returns water cooling with external water cooling jar through the threaded pipe, can realize high -efficient water cooling, and the device operating cost is low.

[0020] (2) The utility model provides a high -efficient water -cooled shielded electric pump, is provided with filter water tank on the pipeline of threaded pipe and rear bearing seat connection, can carry out impurity filtration to the medium of transportation, filters the impurity while cooling, reduces the impurity accumulation in the pump body, prolongs the repair time.

[0021] (3) The utility model provides a high -efficient water -cooled shielded electric pump, a C-shaped support seat is arranged on the upper end of the shielded electric pump base, reduces the contact area between the shell, also can better heat dissipation to shielded electric pump. DRAWINGS

[0022] Fig. 1 It is the sectional view of the high -efficient water -cooled shielded electric pump in the embodiment;

[0023] Fig. 2 It is the schematic view of the high -efficient water -cooled shielded electric pump in the embodiment;

[0024] Fig. 3 It is the side view of the high -efficient water -cooled shielded electric pump in the embodiment;

[0025] As shown in the figure, the numbers represent: 1-pump body; 2-front bearing seat; 3-impeller; 4-pump shaft; 5-water cooling tank; 501-outlet; 502-inlet; 6-threaded pipe; 7-impeller nut; 8-rear bearing seat; 9-water filter tank; 10-front stator flange; 11-rear stator flange; 12-exhaust valve; 13-rotor assembly; 14-stator assembly; 15-junction box; 16-support; 17-front bearing seal assembly; 18-rear bearing seal assembly. DETAILED DESCRIPTION

[0026] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0027] EMBODIMENT

[0028] The embodiment provides a high-efficiency water-cooled shielded electric pump, and specific structures are shown in Figs. 1-3 , comprising:

[0029] The pump cavity mechanism comprises a pump body 1, a front bearing seat 2 which forms a pump cavity together with the pump body 1, and an impeller 3 arranged in the pump cavity;

[0030] The driving mechanism comprises a pump shaft 4 which is in transmission connection with the impeller 3 at one end, and a front bearing seal assembly 17, a rotor assembly 13, a rear bearing seal assembly 18 and a rear bearing seat 8 which are sequentially arranged on the pump shaft 4; the outer side of the rotor assembly 13 is provided with a stator assembly 14; wherein the front bearing seal assembly 17 and the rear bearing seal assembly 18 each contain bearing seats, bearings, shaft sleeves, thrust discs and mechanical seals and other accessories;

[0031] The water cooling mechanism comprises a water cooling tank 5 which is provided with an inlet 502 and an outlet 501, and a threaded pipe 6 which is arranged in the water cooling tank 5 and penetrates through both ends of the water cooling tank 5; one end of the threaded pipe 6 is connected with the front bearing seat 2, and the other end is connected with the rear bearing seat 8.

[0032] In the embodiment, an impeller nut 7 is arranged between the pump shaft 4 and the impeller 3 for connecting the two.

[0033] In the embodiment, the front bearing seat 2 is arranged on the pump shaft 4, and the front bearing seal assembly 17 is arranged in the front bearing seat 2.

[0034] In the embodiment, a water filter tank 9 is arranged on the pipeline where the threaded pipe 6 is connected with the rear bearing seat 8.

[0035] In the embodiment, a front stator flange 10 is arranged between the stator assembly 14 and the front bearing seat 2 for connecting the two.

[0036] In the embodiment, the stator assembly 14 is provided with a stator rear flange 11 connecting the stator assembly 14 and the rear bearing seat 8.

[0037] In the embodiment, the rear bearing seat 8 is provided with an exhaust valve 12.

[0038] In the embodiment, the canned motor pump is further provided with a terminal box 15 electrically connected with the stator assembly 14.

[0039] In the embodiment, the canned motor pump is further provided with a support body 16 supporting the stator assembly 14. Preferably, the support body is a C-shaped support seat.

[0040] Working principle:

[0041] The rotor assembly 13 and the impeller 3 of the pump of the canned motor pump of the embodiment are connected through the same pump shaft 4, and the rotor assembly 13 and the stator assembly 14 are separated by a canning sleeve. The outer surfaces of the stator and the rotor are provided with a canning sleeve made of corrosion-resistant metal sheet to protect the stator and the rotor from being eroded by the pumped liquid. The motor drives the rotor to rotate through a magnetic field, and the whole rotor operates in the pumped liquid, and the bearing is lubricated and cooled through the threaded pipe 6; the pump and the motor are sealed in a pressure container, only static seal, no leakage risk; the outer surfaces of the stator and the rotor are provided with a canning sleeve made of corrosion-resistant metal sheet to protect the motor and the pump from being eroded by the liquid. The prior art uses the pumped liquid to lubricate and cool the bearing, and sometimes also cools the motor, but the cooling effect is not good. Therefore, the application sets an external water cooling tank 5, which is connected with cold water through a pipeline connection port, the cold water is separated from the medium to be transported to prevent pollution, and then the filter water tank 9 can also filter impurities of the transported medium, filter impurities while cooling, reduce the accumulation of impurities in the pump body, and prolong the maintenance time.

[0042] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical solution of the present application, and according to the technical essence of the present application, still belong to the protection scope of the technical solution of the present application.

Claims

1. A high-efficiency water-cooled canned motor pump, characterized by, The shielded electric pump comprises a pump cavity mechanism, a driving mechanism, and a water cooling mechanism. The pump cavity mechanism comprises a pump body (1), a front bearing seat (2) which forms a pump cavity together with the pump body (1), and an impeller (3) arranged in the pump cavity. The driving mechanism comprises a pump shaft (4) which is in driving connection with the impeller (3), a front bearing sealing assembly (17), a rotor assembly (13), a rear bearing sealing assembly (18), and a rear bearing seat (8) which are sequentially sleeved on the pump shaft (4), and a stator assembly (14) arranged outside the rotor assembly (13). The water cooling mechanism comprises a water cooling tank (5) provided with a water inlet and a water outlet, and a threaded pipe (6) arranged in the water cooling tank (5) and penetrating through both ends of the water cooling tank (5), one end of the threaded pipe (6) being connected with the front bearing seat (2) and the other end being connected with the rear bearing seat (8).

2. A high-efficiency water-cooled canned motor pump according to claim 1, characterized in that, A threaded pipe nut (7) is arranged between the pump shaft (4) and the impeller (3) for connecting the two.

3. A high efficiency water cooled canned motor pump according to claim 1, characterized in that, The front bearing seat (2) is sleeved on the pump shaft (4), and the front bearing sealing assembly (17) is arranged in the front bearing seat (2).

4. A high efficiency water cooled canned motor pump according to claim 1, wherein, A water filter tank (9) is arranged on the pipeline connected with the rear bearing seat (8) of the threaded pipe (6).

5. A high efficiency water cooled canned motor pump according to claim 1, wherein, A front stator flange (10) is arranged between the stator assembly (14) and the front bearing seat (2) for connecting the two.

6. A high efficiency water cooled canned motor pump as claimed in claim 1, wherein, A rear stator flange (11) is arranged between the stator assembly (14) and the rear bearing seat (8) for connecting the two.

7. A high efficiency water cooled canned motor pump as claimed in claim 1 wherein, An exhaust valve (12) is arranged on the rear bearing seat (8).

8. A high efficiency water cooled canned electric pump according to claim 1, characterized in that, The shielded electric pump is further provided with a junction box (15) which is in electrical connection with the stator assembly (14).

9. A high efficiency water cooled canned electric pump according to claim 1, characterized in that, The shielded electric pump is further provided with a support body (16) for supporting the stator assembly (14).

10. A high-efficiency water-cooled canned motor pump according to claim 9, characterized in that, The support body (16) is a C-shaped support seat.

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