CN217873322U

CN217873322U - Variable flow submerged pump

Info

Publication number: CN217873322U
Application number: CN202220935059.XU
Authority: CN
Inventors: 王泽兵; 江劲松; 江昕航; 唐建迎; 徐彦鹏; 沈理; 廖建平; 魏家楷; 罗先荣; 张旺; 廖栋华; 仵磊磊; 刘耀成
Original assignee: Guangzhou Xinheng Pump Manufacturing Co ltd
Current assignee: Guangzhou Xinheng Pump Manufacturing Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-11-22
Anticipated expiration: 2032-04-21

Abstract

The utility model relates to a submerged pump technical field especially relates to a variable flow submerged pump. The variable flow submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft, a motor and a throttling sleeve. The shell is provided with a first feeding hole, a second feeding hole, a discharging hole and a cavity; one end of the water outlet pipe is connected with the discharge port, and the other end of the water outlet pipe is higher than the discharge port; the impeller is accommodated in the accommodating cavity and used for driving the material to move from the first feeding hole or the second feeding hole to the discharging hole; the transmission shaft is connected with the impeller; the motor is connected with the transmission shaft and is used for driving the impeller to rotate; the throttle cover is detachably installed in the second feed inlet. That is, the variable flow rate submerged pump realizes the function of adjusting the flow rate of the submerged pump by the design of the throttling sleeve.

Description

Variable flow submerged pump

Technical Field

The embodiment of the utility model provides a relate to submerged pump technical field, especially relate to a variable flow submerged pump.

Background

The submerged pump is a positive pressure conveying vertical pump, has quite wide application field, and can be applied to inflammable and explosive material conveying places such as petroleum refining, oil depots, chemical plants, pharmaceutical factories, factory production lines, generator sets and the like.

In the existing submerged pump, an impeller of the submerged pump is of a single-suction structure, the flow of the pump is fixed and cannot be increased, and the submerged pump with large flow can only be selected again when the flow is required to be increased under certain specific application working conditions. In order to meet the requirement of flow change, manufacturers develop and produce water pumps with various models and specifications, so that the inventory of the water pumps or parts is large, the production cost is also high, and the purchase cost of users is also high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the variable flow submerged pump realizes the function of adjusting the flow of the submerged pump.

The variable flow submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft, a motor and a throttling sleeve. The shell is provided with a first feeding hole, a second feeding hole, a discharging hole and a cavity; one end of the water outlet pipe is connected with the discharge hole, and the other end of the water outlet pipe is higher than the discharge hole; the impeller is accommodated in the accommodating cavity and used for driving materials to move from the first feeding hole or the second feeding hole to the discharging hole; the transmission shaft is connected with the impeller; the motor is connected with the transmission shaft and is used for driving the impeller to rotate; the throttling sleeve is detachably mounted at the second feeding hole.

Optionally, the housing includes a first housing portion and a second housing portion disposed above the first housing portion, and the first feed port, the second feed port, the discharge port, and the receiving chamber are disposed in the first housing portion; the second shell part is sleeved on the transmission shaft; the first feed inlet with the second feed inlet all is equipped with the filter screen.

Optionally, the second feed inlet is arranged towards the second shell portion, and a wall portion of the second shell portion is provided with a first through hole communicated with the second feed inlet.

Optionally, the throttle sleeve is provided with a second through hole through which the drive shaft passes.

Optionally, the wall of the second through hole is provided with a helical groove.

Optionally, the second shell portion is provided with a rotation-preventing rib on a wall portion higher than the first through hole.

Optionally, first shell includes the pump cover, the pump cover is equipped with inhalant canal, the second feed inlet is located inhalant canal deviates from the one end of appearance chamber, inhalant canal's cross section is followed the second feed inlet is arrived the appearance chamber diminishes gradually.

Optionally, the opening angle of the water inlet channel is 1-15 °.

Optionally, a bearing seat is arranged between the second shell and the transmission shaft, and a shaft seal seat for sleeving the transmission shaft is arranged at one end, facing the impeller, of the bearing seat.

Optionally, the shaft seal seat is provided with a backflow channel and a liquid collection cavity communicated with the backflow channel, and the backflow channel is arranged on the end face, facing the bearing seat, of the shaft seal seat.

The utility model discloses variable flow submerged pump compares with prior art, has following beneficial effect:

the variable flow submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft, a motor and a throttling sleeve. Wherein, the shell is provided with a first feeding hole, a second feeding hole, a discharging hole and a cavity; one end of the water outlet pipe is connected with the discharge port, and the other end of the water outlet pipe is higher than the discharge port; the impeller is accommodated in the accommodating cavity and used for driving the material to move from the first feeding hole or the second feeding hole to the discharging hole; the transmission shaft is connected with the impeller; the motor is connected with the transmission shaft and is used for driving the impeller to rotate; the throttle cover is detachably installed in the second feed inlet.

The impeller can realize the suction of slurry from the first feed port and the second feed port after being started. When the second feeding hole is provided with the throttling sleeve, the second feeding hole is blocked, and slurry can only enter from the first feeding hole, so that the water inlet flow of the submerged pump is immediately reduced by half; when the flow of the feed inlet of the submerged pump needs to be increased, the throttling sleeve is detached. That is, the variable flow rate submerged pump realizes the function of adjusting the flow rate of the submerged pump by the design of the throttling sleeve.

Drawings

Fig. 1 is a schematic view of a variable flow submerged pump according to an embodiment of the present invention.

FIG. 2 is a schematic view of a variable flow submersible pump with the throttling sleeve removed.

FIG. 3 is a schematic view of a pump cap.

Fig. 4 is a schematic view of a shaft seal mount.

FIG. 5 is a schematic view of a throttle sleeve.

In the figure, 100, the housing; 110. a first shell portion; 111. a first feed port; 112. a second feed port; 113. a discharge port; 114. a cavity; 115. filtering with a screen; 116. a pump cover; 117. a water inlet channel; 120. a second shell portion; 121. a first through hole; 122. a bearing seat; 123. a shaft seal seat; 124. a return channel; 125. a liquid collection cavity;

200. a water outlet pipe;

300. an impeller;

400. a drive shaft;

500. a throttling sleeve; 510. a second through hole; 511. a helical groove.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-2, a schematic diagram of a variable flow rate submerged pump according to a preferred embodiment of the present invention and a schematic diagram of the variable flow rate submerged pump after a throttle sleeve 500 is removed are shown, and the variable flow rate submerged pump includes a housing 100, a water outlet pipe 200, an impeller 300, a transmission shaft 400, a motor (not shown), and a throttle sleeve 500. The casing 100 is a mounting base for other parts, the water outlet pipe 200 is a carrier for conveying slurry, the impeller 300, the transmission shaft 400 and the motor are power systems of a submerged pump, and the throttling sleeve 500 plays a role in regulating flow. Each of the components will be described separately below.

As for the casing 100, it includes a first casing part 110 and a second casing part 120, the first casing part 110 for receiving the impeller 300, and the second casing part 120 for separating the drive shaft 400 from the outside. Specifically, the impeller 300 includes a first shell portion 110 and a second shell portion 120. The first shell portion 110 is provided with a first inlet 111, a second inlet 112, an outlet 113 and a receiving chamber 114. The first and

second feed ports

111 and 112 are used for sucking the slurry, and the impellers 300 are split to suck the slurry from two directions. In order to intercept a part of the foreign substances, the first and

second feed ports

111 and 112 are provided with screens 115. The first shell 110 includes a pump cover 116, and referring to fig. 3, the pump cover 116 is disposed above the first shell 110. The pump cover 116 is provided with a water inlet channel 117, and the second inlet 112 is provided at one end of the water inlet channel 117 away from the cavity 114. Preferably, the cross-section of the water inlet passage 117 is gradually reduced from the second inlet port 112 to the cavity 114. Specifically, the opening angle of the water inlet channel 117 may be 1-15 °.

In addition, the second housing part 120 is connected to the first housing part 110, which protects the transmission shaft 400 from interference of foreign objects with the rotation of the transmission shaft 400. Preferably, the second feed opening 112 is disposed toward the second shell portion 120, and a wall portion of the second shell portion 120 is provided with a first through hole 121. External slurry can flow in through the first through hole 121, and then enter the water outlet pipe 200 through the second inlet port 112 and the cavity 114. In order to prevent turbine vibration caused by rotation of water inside the second housing part 120, the second housing part 120 is provided with a rotation preventing rib (not shown) at a wall portion higher than the first through hole 121. Prevent revolving the muscle and be prior art, the event is not the utility model discloses too much repeated description. Referring to fig. 1 and 4, a bearing seat 122 is disposed between the second casing portion 120 and the transmission shaft 400, and a shaft seal seat 123 for receiving the transmission shaft 400 is disposed at an end of the bearing seat 122 facing the impeller 300. The shaft seal seat 123 is provided with a backflow channel 124 and a liquid collecting cavity 125 communicated with the backflow channel 124, and the backflow channel 124 is arranged on the end face, facing the bearing seat 122, of the shaft seal seat 123. After axial leakage, the liquid may flow through the return channel 124 into the sump 125 for re-collection.

Referring to fig. 1, one end of the water outlet pipe 200 is connected to the discharge port 113, and the other end is higher than the discharge port 113. Because it is prior art, not the main innovation point of the utility model, therefore not repeated here.

Referring to fig. 1, the impeller 300 is accommodated in the chamber 114. The impellers 300 are split and can suck slurry in two directions. In order to generate a larger axial suction force when the impeller 300 rotates and balance the axial force of the water pump, the blades of the impeller 300 are raised back blades.

With respect to drive shaft 400, which is connected to impeller 300, an external motor drives rotation of drive shaft 400, which in turn drives rotation of the motor. It can adopt the multistage to connect, and the centre is equipped with the shaft coupling, nevertheless because of it is prior art, not the utility model discloses a main innovation point, the event is not repeated here.

Referring to fig. 5, and then to fig. 1, the throttle sleeve 500 is removably mounted to the second feed port 112. The present invention may be embodied in various forms such as a threaded connection, a snap connection, and a bolt connection, but the present invention is not limited thereto. The throttle sleeve 500 is provided with a second through hole 510, and the driving shaft 400 passes through the second through hole 510. In order to restrict the flow in the first case 110 from leaking from the second through hole 510, the wall of the second through hole 510 is provided with a spiral groove 511.

The utility model discloses use of embodiment: the utility model has two flow selection modes, one of which is that the motor drives the impeller 300 to rotate through the transmission shaft 400, the impeller 300 sucks external slurry from the first feed port 111 and the second feed port 112, and the slurry flows into the feed port 113 and the water outlet pipe 200 and reaches the other end of the water outlet pipe 200; secondly, the throttle sleeve 500 blocks the second feed port 112, and the external slurry flows only from the first feed port 111. An operator can flexibly select the use of the throttling sleeve 500 to achieve the purpose of adjusting the suction flow of the submerged pump.

To sum up, this variable flow type submerged pump can realize that the flow of pump can change the effect, and when submerged pump installation throttle cover 500, the flow of pump is the flow of single-suction impeller 300, and when submerged pump did not install throttle cover 500, the flow of pump was the flow of double suction impeller 300, was 2 times the flow of single-suction impeller 300 promptly, need not change the water pump, and simple structure is convenient, had both reduced the water pump model specification of manufacturer, stock, reduced user's water pump purchase amount, part stock, reduced production and purchase cost.

It should be noted that the preferred embodiments of the present invention are shown in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, which are not intended as additional limitations to the present invention, and are provided for the purpose of making the understanding of the present disclosure more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, it will be apparent to those skilled in the art that modifications and variations can be made in the light of the above teachings, and all such modifications and variations are intended to be within the scope of the present invention.

Claims

1. A variable flow submersible pump, comprising:

the shell is provided with a first feeding hole, a second feeding hole, a discharging hole and a cavity;

one end of the water outlet pipe is connected with the discharge hole, and the other end of the water outlet pipe is higher than the discharge hole;

the impeller is accommodated in the cavity and used for driving the material to move from the first feeding hole or the second feeding hole to the discharging hole;

a drive shaft connected to the impeller;

the motor is connected to the transmission shaft and is used for driving the impeller to rotate;

and the throttling sleeve is detachably arranged at the second feeding hole.

2. The variable flow submersible pump according to claim 1, wherein the housing comprises a first housing portion and a second housing portion disposed above the first housing portion, and the first inlet, the second inlet, the outlet, and the cavity are disposed in the first housing portion;

the second shell part is sleeved on the transmission shaft;

the first feed inlet with the second feed inlet all is equipped with the filter screen.

3. The variable flow rate submerged pump according to claim 2, wherein the second feed port is provided toward the second casing portion, and a wall portion of the second casing portion is provided with a first through hole communicating with the second feed port.

4. A variable flow rate submerged pump according to claim 3, wherein the throttle sleeve is provided with a second through hole through which the drive shaft passes.

5. The variable flow rate submerged pump according to claim 4, wherein a wall portion of the second through-hole is provided with a spiral groove.

6. The variable flow rate submerged pump according to claim 3, wherein the second casing portion is provided with an anti-rotation rib on a wall portion higher than the first through hole.

7. The variable flow submersible pump according to claim 2, wherein the first housing portion includes a pump cover, the pump cover is provided with a water inlet channel, the second inlet is provided at an end of the water inlet channel away from the chamber, and a cross section of the water inlet channel is gradually reduced from the second inlet to the chamber.

8. A variable flow submersible pump as claimed in claim 7, wherein the inlet channel has an included angle of opening of 1 to 15 °.

9. The variable flow rate submerged pump according to claim 2, wherein a bearing seat is provided between the second casing portion and the drive shaft, and a shaft seal seat for housing the drive shaft is provided at an end of the bearing seat facing the impeller.

10. The variable flow submersible pump according to claim 9, wherein the shaft seal holder is provided with a return passage and a liquid collection chamber communicating with the return passage, the return passage being provided in an end surface of the shaft seal holder facing the bearing seat.