CN204386892U - Vertical dynamic levitated pump - Google Patents

Abstract

The utility model discloses a vertical dynamic suspension pump, which comprises a motor, a motor frame, a shaft coupling, a pump seat, a water outlet elbow, a connecting pipe, water inlet parts and other components. The water inlet part is installed at the bottom of the pump, and the water inlet part includes the pump body, the guide bearing of the pump body, the suction horn, the impeller, and the pump cover. The upper part of the pump body has a liquid channel extending upwards, and the lower part is a hollow structure. The upper part of the pump body communicates with the lower part. The pump cover is arranged at the bottom of the pump body to seal the bottom of the pump body. The suction horn opens upwards and is set at the center of the lower part of the pump body. The guide bearing of the pump body is set at the center of the suction horn, extending upward and connecting with the pump shaft. The impeller is connected to the suction horn, and its structure is a hollow rotating blade. The center of the impeller is connected with the guide bearing of the pump body, and the motor drives the pump shaft to drive the impeller to rotate. This design method breaks the conventional thinking, the water inlet horn is upward, and the water flow is from top to bottom, which greatly reduces the force on the thrust bearing, reduces vibration and noise, and prolongs the life of the pump.

Description

Vertical dynamic suspension pump

technical field

The utility model relates to a pump, in particular to a vertical dynamic suspension pump.

Background technique

A pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, suspoemulsions and liquid metals, etc., and can also transport liquid and gas mixtures. and liquids containing suspended solids. The technical parameters to measure the performance of the pump include flow rate, suction lift, lift, shaft power, water power, efficiency, etc.; according to different working principles, it can be divided into positive displacement pumps, vane pumps and other types. Positive displacement pumps use the change in the volume of their working chambers to transfer energy; vane pumps use the interaction between rotating blades and water to transfer energy, and there are centrifugal pumps, axial flow pumps and mixed flow pumps.

Traditional vertical pumps usually use centrifugal impellers, which generate large axial forces. The conventional design of vertical pumps is that the water inlet horn is downward, and the water flows from bottom to top. Therefore, the water thrust generated during operation is downward, and the gravity of the rotor is also downward. The thrust bearing of the pump needs to bear a large axial force force. The result is increased thrust bearing temperatures, accelerated wear and shortened pump life.

Utility model content

Aiming at the deficiencies in the existing technology, the design method of the utility model breaks the conventional thinking, the water inlet horn is upward, the water flows into the impeller from top to bottom, and after the energy is increased by the high-speed rotation of the impeller, it flows from bottom to top, so The water thrust generated during operation is upward, and the gravity of the rotor is downward, which are superimposed and basically cancelled. The thrust bearing of the pump only bears a slight axial force, and the rotor of the pump can be considered to be in a suspended state. In this way, the force on the thrust bearing is greatly reduced, the vibration and noise are reduced, and the service life of the pump is prolonged.

In order to achieve the above object, the utility model adopts the following technical solutions:

According to the utility model, a vertical dynamic suspension pump is provided, which is characterized in that it includes a pump shaft and a water inlet component. The water inlet part is installed at the bottom of the pump shaft, and the water inlet part includes the pump body, the guide bearing of the pump body, the suction horn, the impeller, and the pump cover. The upper part of the pump body has a liquid channel extending upwards, and the lower part is a hollow structure. The upper part of the pump body communicates with the lower part. The pump cover is arranged at the bottom of the pump body to seal the bottom of the pump body. The suction horn opens upwards and is set at the center of the lower part of the pump body. The guide bearing of the pump body is set at the center of the suction horn, extending upward and connecting with the pump shaft. The impeller is connected to the suction horn, and its structure is a hollow rotating blade. The center of the impeller is connected with the guide bearing of the pump body, and the impeller rotates with the pump shaft as the center.

According to an embodiment of the utility model, the impeller nut and the pump cover guide bearing, the impeller nut is connected to the center of the impeller from below, and the pump cover guide bearing is connected to the impeller nut from below.

According to an embodiment of the utility model, the center of the pump cover protrudes outward, and the protruding part is a hollow structure, and a guide bearing of the pump cover is arranged inside the protruding part, and the end of the protruding part is a water outlet, and the water outlet is sealed by a screw plug .

According to an embodiment of the utility model, a pump body sealing ring is provided between the impeller and the pump body.

According to an embodiment of the utility model, the upper part of the pump body is connected with the pump body guide bearing, and a shaft sleeve is arranged between the pump body and the pump body guide bearing.

According to an implementation of the utility model, the vertical dynamic suspension pump further includes a connecting pipe, and the bottom of the connecting pipe is connected to the upper part of the pump body.

According to an embodiment of the utility model, the vertical dynamic suspension pump also includes an outlet elbow, a pump base, a shaft coupling, a motor frame and a motor.

According to an embodiment of the utility model, the top of the connecting pipe is connected with the coupling, the outer wall of the top is fixed to the pump seat, and the side of the connecting pipe is connected with the water outlet elbow. The outer wall of the shaft coupling fixes the motor frame, and the motor frame is fixed above the motor frame.

In the above technical solution, the utility model reduces the axial force borne by the thrust bearing components and reduces the wear of the parts. Thereby improving the reliability and life of the pump.

Description of drawings

Figure 1 is a sectional view of the lower part of a vertical dynamic suspension pump;

Fig. 2 is an overall schematic diagram of a vertical dynamic suspension pump.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

The utility model discloses a vertical dynamic suspension pump, which includes a pump shaft 1 and a water inlet part 2. The structure and connection relationship of the above-mentioned parts will be described in detail below.

As shown in FIG. 1 , the water inlet part 2 is in the shape of a trumpet as a whole, and it includes a pump body 3 , a pump body guide bearing 4 , a suction horn 5 , an impeller 6 and a pump cover 7 . The upper part of the pump body 3 has a liquid pipeline extending upwards, the lower part is a hollow container, and the upper part of the pump body 3 communicates with the lower part. The suction horn 5 is a water inlet, which is located in the center of the bottom of the pump body 3 . The guide bearing 4 of the pump body is a hollow cylinder, placed at the center of the suction horn 5, extending upward and connected to the pump shaft 1. The pump shaft 1 is a cylinder located at the center of the pump body 3 and runs through the pump body 3 entirely. The impeller 6 is connected to the suction horn 5, and its structure is a hollow rotating blade. The center of the impeller 6 is connected with the pump body guide bearing 4, and the impeller 6 rotates with the pump body guide bearing 4 as the center of circle. A pump body sealing ring 11 is installed between the impeller 6 and the pump body 3 .

Continuing to see Fig. 1, an impeller nut 8 is installed below the impeller 6, and a pump cover guide bearing 9 is installed above the pump cover 7. The impeller nut 8 is connected to the center of the impeller 6 from below, and the pump cover guide bearing 9 is connected to the impeller nut 8 from below. The pump cover 7 is similar to a cone and is placed at the bottom of the pump body 3. The center of the pump cover 7 protrudes outward, and the protruding part is a hollow structure. The pump cover guide bearing 9 is arranged inside the protruding part, and the end of the protruding part is an outlet. The water port and the water outlet are sealed by the screw plug 10, and the bottom of the pump body 3 is sealed. In addition, the upper part of the pump body 3 is connected with the pump body guide bearing 9, and a shaft sleeve 12 is arranged between the pump body 3 and the pump body guide bearing 9.

As shown in Fig. 2, a connecting pipe 13 is connected to the top of the pump body 3, and the connecting pipe 13 is a cylinder. The top of the connecting pipe 13 is connected with a shaft coupling 15 , the outer wall of the connecting pipe 13 top is fixed with a pump seat 14 , and its side is connected with a water outlet elbow 16 . The outer wall of shaft coupling 15 is fixed motor frame 17, and motor frame 17 top is fixed motor 18.

The utility model breaks the conventional way of thinking, the suction horn 5 of the pump is upward, and the liquid enters the impeller 6 from top to bottom, and after increasing energy through the high-speed rotation of the impeller 6, it flows from bottom to top and passes through the double-channel pump body 3 and the connecting pipe 13 1. The outlet elbow 16 reaches the outlet of the pump, and a small amount of liquid flows downward from the outlet of the pump body through the guide bearing 4 of the pump body and returns to the inlet of the impeller 6 . Another way of liquid comes out from the impeller 6, passes through the gap between the back cover plate of the impeller 6 and the pump cover 7, enters the guide bearing 9 of the pump cover, and is discharged through the screw plug 10 with holes. So as to achieve the purpose of lubricating the guide bearing. The water flows into the impeller 6 from top to bottom, and after the high-speed rotation of the impeller 6 increases energy, it flows from the bottom to the top, so the thrust of the water generated during operation is upward, and the gravity of the rotor is downward. The superposition basically cancels out, and the thrust of the pump The body guide bearing 4 only bears a slight axial force, and it can be considered that the rotor of the pump is in a suspended state. And the double-channel pump body can also balance most of the radial force compared with the single-channel pump body. The design of the utility model greatly reduces the stress of the thrust bearing, effectively reduces the suction of sand, reduces the wear of parts, reduces vibration and noise, thereby improving the reliability and life of the pump.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (7)

1. a vertical dynamic levitated pump, comprises pump shaft and water inlet member, it is characterized in that:

Described water inlet member is installed on the bottom of described pump shaft, and described water inlet member comprises the pump housing, pump housing guide bearing, suction bell, impeller, pump cover;

Described pump housing top has the fluid passage stretched upwards, and its underpart is hollow-core construction, and the top of the pump housing is connected with bottom, and described pump cover is arranged at the bottom of the described pump housing, by airtight bottom the described pump housing;

Described suction bell opening upwards, be arranged at the central authorities of described pump housing bottom, described pump housing guide bearing is arranged at the center of described suction bell, upwards extends and connects described pump shaft;

Described impeller connects described suction bell, and its structure is the rotation blade of hollow, and the center of described impeller is connected with described pump housing guide bearing, described impeller with described pump shaft for the center of circle rotates.

2. vertical dynamic levitated pump as claimed in claim 1, is characterized in that, also comprise impeller nut and pump cover guide bearing, described impeller nut connects the center of described impeller from below, and described pump cover guide bearing connects described impeller nut from below.

3. vertical dynamic levitated pump as claimed in claim 2, it is characterized in that, the center of described pump cover is outwardly, described projection is hollow structure, arrange described pump cover guide bearing in described projection, the end of described projection is water outlet, and described water outlet is airtight by plug screw.

4. vertical dynamic levitated pump as claimed in claim 3, is characterized in that, be provided with casing ring between described impeller and the described pump housing.

5. vertical dynamic levitated pump as claimed in claim 4, is characterized in that, the top of the described pump housing is connected with described pump housing guide bearing, arranges axle sleeve between the described pump housing and described pump housing guide bearing.

6. vertical dynamic levitated pump as claimed in claim 5, is characterized in that, described vertical dynamic levitated pump also comprises adapter, and the bottom of described adapter connects described pump housing top.

7. vertical dynamic levitated pump as claimed in claim 6, is characterized in that, described vertical dynamic levitated pump also comprises Discharging bent-tube, pump seat, coupling, motor rack and motor;

The top of described adapter connects described coupling, and the outer wall at top fixes described pump seat, and its side connects described Discharging bent-tube;

The outer wall of described coupling fixes described motor rack, fixes described motor above described motor rack.