Totally-closed shield pump

Abstract

The utility model relates to the technical field of shield pumps, in particular to a totally-enclosed shield pump which comprises a shield pump body and a shield motor, one side of the shield pump body is connected with the shield motor through a hoop, and the shield motor comprises a front bearing seat assembly, a rear bearing seat assembly, a stator assembly, a rotor assembly and a cable head. The rotor assembly is sleeved with the stator assembly, the front bearing seat assembly and the rear bearing seat assembly are connected to the two sides of the stator assembly respectively, the front bearing seat assembly comprises a front bearing seat and a front bearing, and the rear bearing seat assembly comprises a rear bearing seat, a rear bearing and a plug. The motor can be cooled, the loss of the bearing can be reduced, the motor is prevented from being damaged due to overheating, the motor and the pump body are simple in connection, the assembly process is simple, maintenance is convenient, and the motor can be quickly opened to be repaired when the shield pump is damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shielded pump technical field, specifically a kind of fully-enclosed shielded pump. BACKGROUND

[0002] Shielded pump is a kind of pump and motor integration design, motor rotor and stator need self fluid cutoff to cool down. Motor stator and rotor are generally each provided with metal shielded sleeve, but in actual operation process, the traditional stator and rotor shielded sleeve adopt metal material, metal shielded sleeve can be due to self-conduction, lead to greater eddy current loss, influence the energy efficiency of shielded pump. While motor inside needs sustained high-strength rotation, internal parts high-speed work can lead to shielded pump overheating possibly lead to damage, once the damage as above occurs, the maintenance repair work of shielded pump is also due to the complex structure of shielded pump itself not easy to maintain. SUMMARY

[0003] The utility model provides a kind of fully-enclosed shielded pump to overcome the deficiency of prior art, the shielded pump of the utility model can prevent shielded pump overheating and cause damage, retains the structure that shielded sleeve seals stator and rotor respectively, on the basis of original, it is convenient to disassemble, it is more convenient and fast in maintenance and inspection.

[0004] To achieve the above object, a kind of fully-enclosed shielded pump is designed, including shielded pump body, shielded motor, the shielded pump body side is connected shielded motor by clamp, the shielded motor includes front bearing seat assembly, rear bearing seat assembly, stator assembly, rotor assembly, cable head, the rotor assembly outer sleeve is equipped with stator assembly, front bearing seat assembly and rear bearing seat assembly are connected at the two sides of stator assembly respectively, stator assembly is connected with cable head, front bearing seat assembly includes front bearing seat, front bearing, front bearing is embedded in front bearing seat, balance hole is provided on front bearing seat, rear bearing seat assembly includes rear bearing seat, rear bearing, plug, rear bearing is embedded in rear bearing seat, flow channel is provided between rear bearing and rear bearing seat, rear bearing side is sealed by inserting plug, rotor assembly includes shaft, front end plate, rear end plate, rotor shielded sleeve, rotor iron core, the shaft is provided with through-hole, the one end of shaft is provided with screw thread, the shaft sleeve is provided with rotor iron core, the rotor iron core outer sleeve is provided with rotor shielded sleeve, and the front and rear sides of rotor shielded sleeve are sealed to form rotor sealed cavity by front end plate and rear end plate.

[0005] The shielded pump body includes water pump high-pressure area, water pump low-pressure area, coupling key, gasket, impeller, lock nut, the impeller is connected with the shaft by the coupling key, the impeller is further fixed by tightening the lock nut on the one side of the shaft, the gasket is provided between the impeller and the front bearing seat, the top end of the impeller is the water pump low-pressure area, and the two sides of the impeller are the water pump high-pressure area.

[0006] The stator assembly includes a front top plate, a rear top plate, a stator shielding sleeve, a stator coil, and a motor housing. The stator shielding sleeve is located inside the motor housing, and the stator coil is located between the motor housing and the stator shielding sleeve. The motor housing and the stator shielding sleeve are sealed on both sides by the front top plate and the rear top plate to form a stator sealing cavity. A base is located below the stator assembly.

[0007] The rotor assembly on the rotating shaft is provided with a front shaft sleeve, a front thrust plate, a rear shaft sleeve, and a rear thrust plate on both sides. The front shaft sleeve, the front thrust plate, the rear shaft sleeve, and the rear thrust plate are connected to the rotating shaft key. One end of the rear shaft sleeve is provided with a retaining spring. During assembly, the front shaft sleeve and the rear shaft sleeve are respectively engaged with the front bearing and the rear bearing.

[0008] The balance hole on the front bearing housing, the flow channel in the rear bearing housing, the through hole inside the shaft, and the gap between the rotor shield sleeve and the stator shield sleeve are connected to form a bearing cooling flow channel.

[0009] The connection between the front bearing housing assembly, the rear bearing housing assembly, and the stator assembly can be a threaded connection or a clamp connection.

[0010] Compared with the prior art, this utility model has a cooling circulation channel for the motor and bearing, which can cool the motor, reduce bearing wear, and prevent the motor from overheating and causing damage. Moreover, the connection between the motor and the pump body is simple, the assembly process is simple, and maintenance is convenient. It can be quickly opened and repaired when the canned pump is damaged. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of a shielded motor.

[0013] Figure 3 For the front bearing housing assembly.

[0014] Figure 4 It is a fully enclosed stator assembly.

[0015] Figure 5 It is a fully enclosed rotor assembly.

[0016] Figure 6 This is the rear bearing housing assembly.

[0017] Figure 7 This is a diagram of the cooling circulation channels for the motor and bearings.

[0018] See Figures 1 to 7, 1 is shielding pump body, 11 is coupling key, 12 is gasket, 13 is impeller, 14 is lock nut, 2 is shielding motor, 21 is front bearing seat assembly, 211 is front bearing seat, 212 is front bearing, 213 is balance hole, 22 is rear bearing seat assembly, 221 is rear bearing seat, 222 is rear bearing, 223 is plug, 23 is stator assembly, 231 is front top plate, 232 is rear top plate, 233 is stator shield sleeve, 234 is stator coil, 235 is motor shell, 24 is rotor assembly, 241 is rotating shaft, 242 is front shaft sleeve, 243 is front thrust disc, 244 is rear shaft sleeve, 245 is rear thrust disc, 246 is front end plate, 247 is rear end plate, 248 is rotor shield sleeve, 249 is rotor iron core, 25 is cable head, 3 is clamp, 4 is water pump high pressure area, 5 is water pump low pressure area, 6 is snap spring, 7 is base. DETAILED DESCRIPTION

[0019] The utility model will be further explained according to the drawings.

[0020] As Figure 1 Shown, shielding pump body 1 one side connects shielding motor 2 through clamp 3, shielding motor 2 include front bearing seat assembly 21, rear bearing seat assembly 22, stator assembly 23, rotor assembly 24, cable head 25, rotor assembly 24 is equipped with stator assembly 23, and rotor assembly 24 and stator assembly 3 are sealed by rotor shield sleeve and stator shield sleeve respectively, due to electromagnetic effect, it will generate a large amount of heat, need medium cooling, and front bearing seat assembly 21 and rear bearing seat assembly 22 are connected on the both sides of stator assembly 23 respectively, stator assembly 23 is connected with cable head 25, front bearing seat assembly 21 includes front bearing seat 211, front bearing 212, and front bearing 212 is embedded in front bearing seat 211, and front bearing seat 212 is equipped with balance hole 213, and balance hole 213 can pass through cooling medium, and rear bearing seat assembly 22 includes rear bearing seat 221, rear bearing 222 and plug 223, rear bearing 222 is embedded in rear bearing seat 221, and flow channel is arranged between the inside of rear bearing 222 and rear bearing seat 221, and the flow channel is used for the flow of cooling medium, and rear bearing 222 is sealed on one side by inserting plug 223, and plug 223 prevents liquid medium from flowing out, and rotor assembly 24 includes rotating shaft 241, front end plate 246, rear end plate 247, rotor shield sleeve 248 and rotor iron core 249, rotating shaft 241 is equipped with through-hole, one end of rotating shaft 241 is equipped with screw thread, rotating shaft 241 is sleeved with rotor iron core 249, rotor iron core 249 can adopt permanent magnet, and the efficiency of shielding motor can be improved, rotor shield sleeve 248 is sleeved on the outside of rotor iron core 249, rotor shield sleeve 248 adopts carbon fiber material, and rotor shield sleeve 248 is sealed to form rotor sealing cavity through front end plate 246 and rear end plate 247 on the front and back sides.

[0021] The shielding pump body 1 comprises a water pump high pressure area 4, a water pump low pressure area 5, a coupling key 11, a gasket 12, an impeller 13, and a locking nut 14. The impeller 13 is connected with the rotating shaft 241 through the coupling key 11, and is further fixed by tightening the locking nut 14 on one side of the rotating shaft 241. The gasket 12 is arranged between the impeller 13 and the front bearing seat 211. The top end of the impeller 13 is the water pump low pressure area 5, and the two sides of the impeller 13 are the water pump high pressure area 4.

[0022] The stator assembly 23 comprises a front top plate 231, a rear top plate 232, a stator shielding sleeve 233, a stator coil 234, and a motor shell 235. The motor shell 235 is internally provided with the stator shielding sleeve 233, which can also be made of carbon fiber material. The stator coil 234 is arranged between the motor shell 235 and the stator shielding sleeve 233. The motor shell 235 and the stator shielding sleeve 233 are sealed by the front top plate 231 and the rear top plate 232 on both sides to form a stator sealing cavity. The stator assembly 23 is provided below with a base 7.

[0023] The rotating shaft 241 is provided on both sides of the rotor assembly 24 with a front shaft sleeve 242, a front thrust disc 243, a rear shaft sleeve 244, and a rear thrust disc 245, which are keyed connected with the rotating shaft 241. One end of the rear shaft sleeve 244 is provided with a snap spring 6. During assembly, the front shaft sleeve 242 and the rear shaft sleeve 244 are matched with the front bearing 212 and the rear bearing 222 respectively. A large amount of heat will be generated between the shaft sleeve and the bearing, and between the bearing and the thrust disc during high-speed operation, so cooling is required.

[0024] The balance hole 213 on the front bearing seat 211, the flow channel in the rear bearing seat 221, the through hole in the rotating shaft 241, and the gap between the rotor shielding sleeve 248 and the stator shielding sleeve 233 are communicated, forming a cooling flow channel for the motor and the bearing.

[0025] The front bearing seat assembly 21 and the rear bearing seat assembly 22 can be connected with the stator assembly 23 in a threaded connection manner or can be connected with the stator assembly 23 by using a clamp 3.

[0026] In use of the utility model, through shielding motor high -speed rotation drive impeller 13, medium is transmitted from low pressure area to high pressure area, motor front shaft sleeve 242, rear shaft sleeve 244 respectively with front bearing 212, rear bearing 222 cooperation, under high -speed rotation, will because bearing friction produce heat, rotor assembly 24 and stator assembly 23 under electromagnetic action also can produce heat, to prevent overheating, at the same time, medium will from high pressure area, through the balance hole 213 of front bearing seat 211, the gap between rear bearing 222 and rear bearing seat 221, the gap between rear bearing 222 and rear thrust disc 245, the gap between stator shield sleeve 233 and rotor shield sleeve 248, the through -hole in the inside of rotating shaft 241, finally flow into low pressure area, medium takes away the heat generated by friction and electromagnetism, realize the function of cooling. When finding that shielding pump has the fault, can through the mode of unscrewing screw or loosening clamp 3, quickly disassembles, carries out repair maintenance, after maintaining well, reconnection screw or clamp 3 can continue to work.

Claims

1. A canned shielded pump comprising a shielded pump body, a shielded motor, characterized in that: The shielding pump body (1) is connected with the shielding motor (2) through the clamp (3) on one side, the shielding motor (2) comprises a front bearing seat assembly (21), a rear bearing seat assembly (22), a stator assembly (23), a rotor assembly (24) and a cable head (25), the rotor assembly (24) is provided with the stator assembly (23), the front bearing seat assembly (21) and the rear bearing seat assembly (22) are connected on the two sides of the stator assembly (23) respectively, the stator assembly (23) is connected with the cable head (25), the front bearing seat assembly (21) comprises a front bearing seat (211) and a front bearing (212), the front bearing (212) is embedded in the front bearing seat (211), the front bearing seat (211) is provided with a balance hole (213), the rear bearing seat assembly (22) comprises a rear bearing seat (221), a rear bearing (222) and a plug (223), the rear bearing (222) is embedded in the rear bearing seat (221), a flow channel is arranged between the rear bearing (222) and the rear bearing seat (221), the rear bearing (222) is sealed by inserting the plug (223) on one side, the rotor assembly (24) comprises a rotating shaft (241), a front end plate (246), a rear end plate (247), a rotor shielding sleeve (248) and a rotor iron core (249), the rotating shaft (241) is provided with a through hole, one end of the rotating shaft (241) is provided with a thread, the rotating shaft (241) is provided with the rotor iron core (249), the rotor iron core (249) is provided with the rotor shielding sleeve (248), and the rotor shielding sleeve (248) is sealed to form a rotor sealing cavity through the front end plate (246) and the rear end plate (247) on the front and rear sides.

2. A canned magnetic drive pump according to claim 1, wherein: The shielding pump body (1) comprises a high-pressure area (4) of the water pump, a low-pressure area (5) of the water pump, a connecting key (11), a gasket (12), an impeller (13) and a locking nut (14), the impeller (13) is connected with the rotating shaft (241) through the connecting key (11), the impeller (13) is further fixed by tightening the locking nut (14) on one side of the rotating shaft (241), the gasket (12) is arranged between the impeller (13) and the front bearing seat (211), the top end of the impeller (13) is the low-pressure area (5) of the water pump, and the two sides of the impeller (13) are the high-pressure area (4) of the water pump.

3. A canned magnetic drive pump according to claim 1, wherein: The stator assembly (23) comprises a front top plate (231), a rear top plate (232), a stator shielding sleeve (233), a stator coil (234) and a motor shell (235), the motor shell (235) is internally provided with the stator shielding sleeve (233), the motor shell (235) and the stator shielding sleeve (233) are provided with the stator coil (234), the motor shell (235) and the stator shielding sleeve (233) are sealed to form a stator sealing cavity through the front top plate (231) and the rear top plate (232) on the two sides, and the stator assembly (23) is provided with a base (7) below.

4. A canned magnetic drive pump according to claim 1, wherein: The rotating shaft (241) is provided with a front shaft sleeve (242), a front thrust disc (243), a rear shaft sleeve (244) and a rear thrust disc (245) on both sides of the rotor assembly (24), the front shaft sleeve (242), the front thrust disc (243), the rear shaft sleeve (244) and the rear thrust disc (245) are connected with the rotating shaft (241) by keys, and the rear shaft sleeve (244) is provided with a snap spring (6) at one end, and the front shaft sleeve (242) and the rear shaft sleeve (244) are matched with the front bearing (212) and the rear bearing (222) respectively during assembly.

5. A canned magnetic drive pump according to claim 1, wherein: The balance hole (213) on the front bearing seat (211), the flow channel in the rear bearing seat (221), the through hole in the rotating shaft (241), the gap between the rotor shielding sleeve (248) and the stator shielding sleeve (233) are communicated, and the cooling flow channel of the motor and the bearing is formed.

6. A canned magnetic drive pump in accordance with claim 1 wherein: The connection mode of the front bearing seat assembly (21), the rear bearing seat assembly (22) and the stator assembly (23) can be threaded connection or can be connected by a clamp (3).

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