CN219220752U - Impeller centrifugal pump structure - Google Patents

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to an impeller centrifugal pump structure, which comprises a shell, a coil, an armature, a rotor, a magnetic sleeve, an impeller and a top cover, wherein the shell is arranged on the shell; the coil is wound on the armature to form a stator, and the stator is sealed in the interlayer of the shell; the top end of the shell is also provided with an installing cavity with an upward opening, the bottom of the installing cavity is provided with a positioning hole, and the top cover covers the top of the shell; the bottom side of the top cover is provided with a concave cavity, one side of the concave cavity is provided with a water outlet, the top of the top cover is provided with a water inlet, the bottom end of the water inlet is extended with a plurality of connecting rib plates, the bottom end of each connecting rib plate is provided with a connecting sleeve, a positioning shaft is arranged in each connecting sleeve, the lower end of each positioning shaft extends into each positioning hole, a rotor is rotationally sleeved on each positioning shaft, a magnetic sleeve is fixedly sleeved on the rotor, the magnetic poles of two opposite sides of the magnetic sleeve are opposite, and an impeller is arranged at the top end of the rotor and extends into the concave cavity; the top of the impeller is provided with a water cavity communicated with the water inlet, and a plurality of centrifugal channels are arranged around the water cavity.

Description

Impeller centrifugal pump structure

Technical Field

The utility model belongs to the technical field of water pumps, and particularly relates to an impeller centrifugal pump structure.

Background

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy or other external energy of prime mover to liquid to increase energy of liquid, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion, suspension emulsion and liquid metal. Liquids, gas mixtures, and liquids containing suspended solids may also be delivered. Technical parameters of the water pump performance include flow, suction lift, shaft power, water power, efficiency and the like; according to different working principles, the water pump can be divided into a volumetric water pump, a vane pump and the like. The displacement pump uses the change of the volume of the working chamber to transfer energy; the vane pump is a type of centrifugal pump, axial flow pump, mixed flow pump, etc. that uses the interaction of rotary vanes with water to transfer energy.

Centrifugal pumps generally comprise a housing, a motor and an impeller, the motor is disposed in the housing, the impeller is disposed in a closed cavity of the other of the housing, and a shaft of the motor extends into the sealed cavity to connect with the impeller, and the closed cavity has a water inlet and a water outlet. Because the rotating shaft of the motor stretches into the cavity of the impeller, the part, connected with the cavity, of the rotating shaft is required to be subjected to sealing treatment, and after the part, connected with the sealing cavity, of the other rotating shaft is worn, water leakage can be caused, so that water can enter the motor to cause the problems of motor burnout and the like.

Disclosure of Invention

The utility model aims to provide an impeller centrifugal pump structure which solves the problem that water leakage exists at the connecting position of a rotating shaft and a shell of the conventional centrifugal water pump.

In order to achieve the above purpose, the embodiment of the utility model provides an impeller centrifugal pump structure, which comprises a shell, a coil, an armature, a rotor, a magnetic sleeve, an impeller and a top cover; the coil is wound on the armature to form a stator, an annular interlayer is arranged in the shell, and the stator is sleeved in the interlayer and sealed in the interlayer; the top end of the shell is also provided with an installing cavity with an upward opening, the bottom of the installing cavity is provided with a positioning hole, the top cover covers the top of the shell, and the installing cavity is sealed; the bottom side of the top cover is provided with a concave cavity, one side of the concave cavity is provided with a water outlet, the top of the top cover is provided with a water inlet, the bottom end of the water inlet is extended with a plurality of connecting rib plates, the bottom end of each connecting rib plate is provided with a connecting sleeve, a positioning shaft is arranged in each connecting sleeve, the lower end of each positioning shaft stretches into each positioning hole, the rotor is rotationally sleeved on each positioning shaft, the magnetic sleeve is fixedly sleeved on the rotor, the magnetic poles of the two opposite sides of the magnetic sleeve are opposite, and the impeller is arranged at the top end of the rotor and stretches into the concave cavity; the top of the impeller is provided with a water cavity communicated with the water inlet, a plurality of centrifugal channels are arranged around the water cavity, and blades are formed between every two adjacent centrifugal channels.

Further, the water outlet is tangent to the inner circle of the concave cavity, the inner side wall of the concave cavity is further provided with drainage parts which are distributed in a spiral line, the drainage parts are provided with a large end close to the water outlet, and the other end of the drainage parts is connected with the inner side wall of the concave cavity in a smooth transition mode.

Further, the blades of the impeller extend along an involute.

Further, the top of casing still is provided with the ring channel, be provided with the sealing washer in the ring channel, the top of top cap is provided with the bulge loop, the bulge loop card is gone into in the ring channel.

Further, a graphite sleeve is arranged in the rotor, and the positioning shaft rotationally penetrates through the graphite sleeve.

Further, two gaskets are sleeved on the positioning shaft, and the gaskets are positioned at two ends of the graphite sleeve.

The above technical solutions in the impeller centrifugal pump structure provided by the embodiments of the present utility model at least have the following technical effects:

according to the impeller centrifugal pump structure, electrons formed by the coils are sealed in the interlayer, the rotor sleeved on the positioning shaft is located in the mounting cavity, after the coils are electrified, the coils form alternating electromagnetic fields, the alternating electromagnetic fields drive the magnetic sleeve to rotate, the rotor and the impeller are driven to rotate at high speed, liquid needing to be pressurized and output enters the water cavity in the impeller from the water inlet, and the water in the water cavity can be thrown out at high speed by the impeller rotating at high speed through the centrifugal channel and is output through the water outlet. Because the coil of the energizing part is sealed in the interlayer, the coil can not contact with water, the problem of water leakage can be avoided, and the circuit part inside the water pump can be well protected. In addition, water entering the water cavity can enter the installation cavity, so that heat dissipation and cooling can be further performed on the coil in the interlayer, and the problem of overhigh temperature is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of an impeller centrifugal pump structure according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of an impeller centrifugal pump structure according to an embodiment of the present utility model.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is a front view of a top cover of an impeller centrifugal pump structure according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of an impeller centrifugal pump structure provided by an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, an impeller centrifugal pump structure is provided, which includes a housing 100, a coil, an armature, a rotor 200, a magnetic sleeve 300, an impeller 400, and a top cover 500, please refer to fig. 1 and 2. The coil is wound on the armature to form a stator 600, an annular interlayer is arranged in the shell 100, and the stator 600 is sleeved in the interlayer and sealed in the interlayer. The top of the shell 100 is further provided with an installing cavity 101 with an upward opening, a positioning hole is formed in the bottom of the installing cavity 101, and the top cover 500 covers the top of the shell 100 to seal the installing cavity 101. The bottom side of top cap 500 is equipped with cavity 501, one side of cavity 501 is provided with delivery port 502, the top of top cap 500 is provided with water inlet 503, the bottom of water inlet 503 extends there is a plurality of connection gusset 504, the bottom of connection gusset 504 is provided with adapter sleeve 505, be provided with locating shaft 506 in the adapter sleeve 505, the lower extreme of locating shaft 506 stretches into in the locating hole, rotor 200 rotationally overlaps to establish locating shaft 506, magnetic sleeve 300 fixedly overlaps to establish on rotor 200, the magnetic pole of the opposite side of magnetic sleeve 300 is opposite, impeller 400 sets up rotor 200's top, and stretches into in the cavity 501. The impeller 400 is provided with a water cavity 401 communicated with the water inlet 503, a plurality of centrifugal channels 402 are arranged around the water cavity 401, and blades 403 are formed between adjacent centrifugal channels 402. In the centrifugal pump of this embodiment, the water inlet pipe is connected with the water inlet 503, the water outlet pipe is connected with the water outlet 502, low-pressure water is input into the casing 100 through the water inlet pipe, after the coil is electrified, the coil forms an alternating electromagnetic field, the alternating electromagnetic field drives the magnetic sleeve 300 to rotate, and then drives the rotor 200 and the impeller 400 to rotate at a high speed, the water input into the casing 100 enters the water cavity 401 in the impeller 400 from the water inlet 503, the water in the water cavity 401 can be thrown out at a high speed through the centrifugal channel 402, and the water is output through the water outlet 502. Because the coil of the energizing part is sealed in the interlayer, the coil can not contact with water, the problem of water leakage can be avoided, and the circuit part inside the water pump can be well protected. In addition, water entering the water cavity 401 also enters the installation cavity 101, so that heat dissipation and cooling can be further performed on the coil in the interlayer, and the problem of overhigh temperature is avoided.

Further, referring to fig. 4, the water outlet 502 is tangential to the inner circle of the cavity 501. The trajectory of the water thrown by the centrifugal force of the impeller 400 is tangential to the impeller 400, so that the thrown water can be thrown from the water outlet 502 at a high speed better. The inner side wall of the cavity 501 is further provided with a drainage part 510, the drainage part 510 is distributed in a spiral line, the drainage part 510 is provided with a large end close to the water outlet 502, and the other end is connected with the inner side wall of the cavity 501 in a smooth transition manner. The water thrown out from the impeller 400 is blocked by the big end, so that the thrown water is better discharged from the water outlet 502; in addition, the drainage portion 510 is in a spiral line, so that the gap between the impeller 400 and the cavity 501 is gradually increased, and the water pressure in the cavity 501 is gradually increased.

Further, referring to fig. 5, the blades 403 of the impeller 400 extend along an involute. The blade 403 adopts involute extension setting, and when blade 403 high-speed rotation, blade 403 is beaten out rivers, and the resistance of blade 403 to rivers is minimum, can improve the speed of rivers, and then can improve the water pressure of pumping.

Further, referring to fig. 2 and 3, an annular groove 102 is further provided at the top of the housing 100, a sealing ring 103 is provided in the annular groove 102, a convex ring 507 is provided at the top of the top cover 500, and the convex ring 507 is snapped into the annular groove 102. The sealability of the top cover 500 with the case 100 can be further improved.

Further, referring to fig. 2, a graphite sleeve 201 is disposed in the rotor 200, and the positioning shaft 506 rotatably penetrates the graphite sleeve 201. The graphite sleeve 201 can have a good self-lubricating effect under the soaking of water, and the friction force of the rotation of the rotor 200 is reduced.

Further, referring to fig. 2, two gaskets 202 are further sleeved on the positioning shaft 506, and the gaskets 202 are located at two ends of the graphite sleeve 201. Avoiding the problem of wear of the tip 500 and the housing 100 caused by direct contact of the graphite sleeve 201 with the housing 100 and the top cover 500.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. The impeller centrifugal pump structure is characterized by comprising a shell, a coil, an armature, a rotor, a magnetic sleeve, an impeller and a top cover; the coil is wound on the armature to form a stator, an annular interlayer is arranged in the shell, and the stator is sleeved in the interlayer and sealed in the interlayer; the top end of the shell is also provided with an installing cavity with an upward opening, the bottom of the installing cavity is provided with a positioning hole, the top cover covers the top of the shell, and the installing cavity is sealed; the bottom side of the top cover is provided with a concave cavity, one side of the concave cavity is provided with a water outlet, the top of the top cover is provided with a water inlet, the bottom end of the water inlet is extended with a plurality of connecting rib plates, the bottom end of each connecting rib plate is provided with a connecting sleeve, a positioning shaft is arranged in each connecting sleeve, the lower end of each positioning shaft stretches into each positioning hole, the rotor is rotationally sleeved on each positioning shaft, the magnetic sleeve is fixedly sleeved on the rotor, the magnetic poles of the two opposite sides of the magnetic sleeve are opposite, and the impeller is arranged at the top end of the rotor and stretches into the concave cavity; the top of the impeller is provided with a water cavity communicated with the water inlet, a plurality of centrifugal channels are arranged around the water cavity, and blades are formed between every two adjacent centrifugal channels.

2. The impeller centrifugal pump structure according to claim 1, wherein: the water outlet is tangent with the inner circle of the concave cavity, the inner side wall of the concave cavity is further provided with a drainage part which is distributed in a spiral line, the drainage part is provided with a large end which is close to the water outlet, and the other end of the drainage part is connected with the inner side wall of the concave cavity in a smooth transition mode.

3. The impeller centrifugal pump structure according to claim 1, wherein: the blades of the impeller extend along an involute.

4. A centrifugal pump structure according to any one of claims 1 to 3, wherein: the top of the shell is also provided with an annular groove, a sealing ring is arranged in the annular groove, the top of the top cover is provided with a convex ring, and the convex ring is clamped into the annular groove.

5. A centrifugal pump structure according to any one of claims 1 to 3, wherein: the rotor is internally provided with a graphite sleeve, and the positioning shaft rotationally penetrates through the graphite sleeve.

6. The impeller centrifugal pump structure according to claim 5, characterized in that: two gaskets are sleeved on the positioning shaft, and the gaskets are positioned at two ends of the graphite sleeve.

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