CN214247689U - Vertical multi-stage long-shaft submerged pump - Google Patents

Abstract

The utility model discloses a vertical multistage long shaft submerged pump, which comprises a motor and a long shaft, wherein the power output end of the motor is connected with one end of the long shaft, and a mechanical seal, a balance drum, a secondary impeller and a primary impeller are sequentially arranged on the long shaft below the motor from top to bottom; a sealing box body is arranged between the mechanical seal and the balance drum, a balance sleeve is sleeved outside the balance drum, and an outlet section is arranged outside a long shaft between the balance drum and the secondary impeller; the middle section is arranged on the outer side of the secondary impeller, a guide vane is arranged on the secondary impeller, a support pipe is sleeved on the outer side of the long shaft below the secondary impeller, and the primary impeller is connected to the bottommost part of the long shaft; the long shaft is provided with a shaft sleeve in a span way, and a bushing is sleeved outside the shaft sleeve. The utility model discloses compare the current major axis submerged pump structure of arranging whole impellers in the pump bottommost and compare that the vibration is little, the vice wearing and tearing of friction are little, the reliability is high, longe-lived.

Description

Vertical multi-stage long-shaft submerged pump

Technical Field

The utility model belongs to the technical field of the industrial pump, specifically relate to a vertical multistage major axis submerged pump.

Background

The long-shaft submerged pump is suitable for conveying various corrosive media such as conveyor belt particles, high viscosity, strong acid, alkali, salt, strong oxidant and the like, and the novel submerged pump is suitable for conveying various light media such as inflammable and explosive media; the shell, the outlet pipe and the overflowing part of the conventional long-shaft submerged pump are all made of corrosion-resistant materials, the motor part is placed on the liquid level, and the pump part is placed below the liquid level; however, the structure of the conventional long-axis submerged pump has the following problems: all the impellers are arranged at the bottommost part of the pump, and the pump has the advantages of large vibration, large friction pair abrasion, low reliability and short service life. Therefore, there is a need to develop a long shaft submerged pump with a new structure that can solve the above problems.

Disclosure of Invention

Aiming at the problems, the utility model makes up the defects of the prior art and provides a vertical multi-stage long-shaft submerged pump; the utility model discloses a vertical multistage major axis submerged pump compares in the current major axis submerged pump structure of pump bottommost with whole impellers, and its vibration is little, the vice wearing and tearing of friction are little, and the reliability is high, longe-lived.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

The utility model relates to a vertical multistage major axis submerged pump, including motor and major axis, its characterized in that: the power output end of the motor is connected with one end of the long shaft, and the long shaft below the motor is sequentially provided with a mechanical seal, a balance drum, a secondary impeller and a primary impeller from top to bottom; a sealing box body is arranged between the mechanical seal and the balance drum, a balance sleeve is sleeved outside the balance drum, and an outlet section is arranged outside a long shaft between the balance drum and the secondary impeller; the middle section is installed on the outer side of the secondary impeller, a guide vane is arranged on the secondary impeller, a support pipe is sleeved on the outer side of the long shaft below the secondary impeller, and the primary impeller is connected to the bottommost part of the long shaft; the long shaft is provided with a shaft sleeve in a span manner, and a bushing is sleeved on the outer side of the shaft sleeve.

As a preferred scheme of the utility model, the motor is fixed to be set up in the motor support, and motor power take off end and major axis junction are provided with the bearing body part spare, and the bearing body part spare passes through bearing body support fixed mounting, and is fixed continuous between motor support and the bearing body support.

In another preferred embodiment of the present invention, the bearing body member is an angular contact ball bearing.

As another preferred scheme of the utility model, the major axis include upper shaft and lower shaft, connect through spiale snap ring, spiale cover between upper shaft and the lower shaft, the spiale cover is located the spiale snap ring outside.

As another preferred scheme of the utility model, the stay tube on distribute and be provided with the guide bearing seat, the guide bearing seat links to each other with the epaxial bush of major axis.

As another preferred scheme of the utility model, first-stage impeller below install the horn pipe, horn pipe below install the filter screen.

As another preferred scheme of the utility model, the secondary impeller be a plurality of, primary impeller be 1.

The beneficial effects of the utility model.

1. The utility model provides a vertical multistage major axis submerged pump, its structural improvement lie in that the first impeller sinks, secondary impeller lifts to export section bottom, and the first impeller can carry secondary impeller entry with the medium, and there is only 1 first impeller at the submerged minimum, and it compares vibration little, the vice wearing and tearing of friction little, the reliability is high, longe-lived in the current major axis submerged pump structure of placing whole impellers in pump bottommost.

2. The secondary impeller is connected with the outlet section, and bushings are arranged at the front and the back of the secondary impeller for supporting, so that the deflection of the pump is reduced, and the abrasion of a friction pair is reduced.

3. When the degree of depth is longer under the liquid, the utility model discloses the combination of the upper shaft that sets up and lower shaft is connected and can be satisfied the demand, and it is through the cutting ferrule formula spiale mode that adopts spiale cover and spiale snap ring to link to each other, and the structure is reliable.

4. The utility model discloses a balanced axial force of balance drum, residual axial force are born by bearing body angular contact ball bearing.

Drawings

In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right to combine the attached drawing and detailed description mode below the utility model discloses further detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.

Fig. 1 is a structural diagram of a vertical multistage long-axis submerged pump of the present invention.

Fig. 2 is an enlarged structure diagram of the upper part of the vertical multi-stage long-axis submerged pump of the present invention.

Fig. 3 is an enlarged structure diagram of the middle part of the vertical multi-stage long-axis submerged pump of the present invention.

Fig. 4 is an enlarged structure diagram of the lower part of the vertical multi-stage long shaft submerged pump of the present invention.

The labels in the figure are: 1 is a motor bracket; 2 is a bearing body part; 3 is a bearing body bracket; 4, mechanical sealing; 5 is a sealing box body; 6 is a balance drum; 7 is a balance sleeve; 8 is an outlet section; 9 is a bushing; 10 is a guide vane; 11 is a middle section; 12 is a secondary impeller; 13 is an upper shaft; 14 is a support tube; 15 is a connecting shaft sleeve; 16 is a connecting shaft clamping ring; 17 is a shaft sleeve; 18 is a lower shaft; 19 is a guide bearing seat; 20 is a first-stage impeller; 21 is a horn tube; and 22 is a filter screen.

Detailed Description

Referring to fig. 1, 2, 3 and 4, a vertical multi-stage long-shaft submerged pump comprises a motor and a long shaft, and is characterized in that: the power output end of the motor is connected with one end of the long shaft, and the mechanical seal 4, the balance drum 6, the secondary impeller 12 and the primary impeller 20 are sequentially arranged on the long shaft below the motor from top to bottom; a sealing box body 5 is arranged between the mechanical seal 4 and the balance drum 6, a balance sleeve 7 is sleeved outside the balance drum 6, and an outlet section 8 is arranged outside a long shaft between the balance drum 6 and the secondary impeller 12; a middle section 11 is installed on the outer side of the secondary impeller 12, a guide vane 10 is arranged on the secondary impeller 12, a support pipe 14 is sleeved on the outer side of a long shaft below the secondary impeller 12, and the primary impeller 20 is connected to the bottommost part of the long shaft; the long shaft is provided with a shaft sleeve 17 in a span manner, and a shaft bushing 9 is sleeved outside the shaft sleeve 17.

The motor is fixedly arranged in the motor support 1, a bearing body part 2 is arranged at the joint of the power output end of the motor and the long shaft, the bearing body part 2 is fixedly installed through the bearing body support 3, and the motor support 1 is fixedly connected with the bearing body support 2.

The bearing body component 2 adopts an angular contact ball bearing.

The long shaft comprises an upper shaft 13 and a lower shaft 18, the upper shaft 13 is connected with the lower shaft 18 through a connecting shaft clamping ring 16 and a connecting shaft sleeve 15, and the connecting shaft sleeve 15 is sleeved on the outer side of the connecting shaft clamping ring 16.

The support tube 14 is distributed with a guide bearing seat 19, and the guide bearing seat 19 is connected with the bushing 9 on the long shaft; specifically, the long shaft is supported in a multi-point manner, and the span of each bushing 9 meets the specification of the API610 standard.

Bell-mouthed tube 21 is installed to first-stage impeller 20 below, bell-mouthed tube 21 below install filter screen 22.

The number of the secondary impellers 12 is plural, and the number of the primary impellers 20 is 1.

Specifically, the utility model discloses structural improvement lies in: the primary impeller 20 sinks, the secondary impeller 12 is lifted to the bottom of the outlet section 8, the primary impeller 20 can convey media to the inlet of the secondary impeller 12, and only 1 primary impeller 20 is arranged at the lowest point under the liquid, so that compared with the existing long-shaft submerged pump structure in which all impellers are arranged at the bottommost part of the pump, the long-shaft submerged pump structure has the advantages of small vibration, small abrasion of a friction pair, high reliability and long service life; the secondary impeller 12 is connected with the outlet section 8, and bushings 9 are arranged at the upper end and the lower end of the secondary impeller 12 for supporting, so that the deflection of the pump is reduced, and the abrasion of a friction pair is reduced; when the submerged depth is long, the combined connection of the upper shaft 13 and the lower shaft 18 can meet the requirement, and the structure is reliable by adopting a sleeve type shaft connecting mode that the shaft connecting sleeve 15 is connected with the shaft connecting clamping ring 16; the balance drum 6 is adopted to balance the axial force, and the residual axial force is born by the bearing body angular contact ball bearing.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims (6)

1. Vertical multistage major axis submerged pump, including motor and major axis, its characterized in that: the power output end of the motor is connected with one end of the long shaft, and the long shaft below the motor is sequentially provided with a mechanical seal, a balance drum, a secondary impeller and a primary impeller from top to bottom; a sealing box body is arranged between the mechanical seal and the balance drum, a balance sleeve is sleeved outside the balance drum, and an outlet section is arranged outside a long shaft between the balance drum and the secondary impeller; the middle section is installed on the outer side of the secondary impeller, a guide vane is arranged on the secondary impeller, a support pipe is sleeved on the outer side of the long shaft below the secondary impeller, and the primary impeller is connected to the bottommost part of the long shaft; the long shaft is provided with a shaft sleeve in a span manner, and a bushing is sleeved on the outer side of the shaft sleeve.

2. The vertical multistage long axis submerged pump of claim 1, wherein: the motor is fixedly arranged in the motor support, a bearing body part is arranged at the joint of the power output end of the motor and the long shaft, the bearing body part is fixedly installed through the bearing body support, and the motor support is fixedly connected with the bearing body support.

3. The vertical multistage long axis submerged pump of claim 2, wherein: the bearing body component adopts an angular contact ball bearing.

4. The vertical multistage long axis submerged pump of claim 1, wherein: the supporting tube is distributed with guide bearing seats which are connected with the bushing on the long shaft.

5. The vertical multistage long axis submerged pump of claim 1, wherein: the horn pipe is installed to first-stage impeller below, horn pipe below install the filter screen.

6. The vertical multistage long axis submerged pump of claim 1, wherein: the number of the secondary impellers is multiple, and the number of the primary impellers is 1.

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