CN218062694U - Heavy-duty submerged pump - Google Patents

Abstract

The utility model relates to a submerged pump technical field especially relates to a heavy load type submerged pump. The heavy-duty submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft and a motor. Wherein, the shell is provided with a feed inlet, a discharge outlet 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 arranged in the cavity and used for driving the material to move from the feed inlet to the discharge outlet; the transmission shaft is arranged on the shell through a bearing and is connected with the impeller; the motor is connected to the transmission shaft and is used for driving the impeller to rotate; the casing is equipped with and is used for cooling the cooling chamber of bearing, the cooling chamber is equipped with inlet and liquid outlet. That is, this heavy-duty submerged pump has reduced the bearing temperature under the heavy load through the design of cooling chamber.

Description

Heavy-duty submerged pump

Technical Field

The embodiment of the utility model provides a relate to submerged pump technical field, especially relate to a heavy load type 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.

At present, when the existing submerged pump is used for conveying slurry media (such as ore pulp, coal slurry, lime slurry and alumina slurry) with high solid content and large specific gravity, a bearing bears large load, so that the internal temperature of the bearing is high, lubricating oil fails, and the internal abrasion of the bearing is serious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: a heavy-duty submerged pump is provided to reduce the bearing temperature under heavy load.

The heavy-duty submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft and a motor. Wherein, the shell is provided with a feed inlet, a discharge outlet 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 arranged in the cavity and used for driving the material to move from the feed inlet to the discharge outlet; the transmission shaft is arranged on the shell through a bearing and connected to the impeller; the motor is connected to the transmission shaft and is used for driving the impeller to rotate; the casing is equipped with and is used for cooling the cooling chamber of bearing, the cooling chamber is equipped with inlet and liquid outlet.

Optionally, the housing includes a first housing portion and a second housing portion disposed above the first housing portion, and the feed inlet, the discharge outlet, and the receiving chamber are disposed in the first housing portion; the second shell portion is sleeved with the transmission shaft, and the bearing is installed between the second shell portion and the transmission shaft.

Optionally, the cooling system further comprises a cooling liquid inlet pipe communicated with the liquid inlet and a cooling liquid outlet pipe communicated with the liquid outlet; the cooling cavity is disposed around the bearing.

Optionally, the second housing portion comprises a bearing housing and a coupling tube, the bearing comprising a thrust bearing, a journal bearing and an auxiliary sliding bearing, the thrust bearing and the journal bearing being mounted to the bearing housing, the coupling tube being provided with a bearing seat, the auxiliary sliding bearing being mounted to the bearing seat.

Optionally, the cooling cavities include a first cooling cavity and a second cooling cavity, and two first cooling cavities are provided and are respectively arranged at the position, close to the thrust bearing and the radial bearing, of the bearing box; the second cooling cavity comprises a water guide groove, a water inlet hole and a water outlet hole, the water guide groove is annularly arranged on the auxiliary sliding bearing, the water inlet hole and the water outlet hole are arranged on the bearing seat, and the water inlet hole and the water outlet hole are communicated with the water guide groove.

Optionally, the cooling liquid inlet pipe comprises a first cooling liquid inlet pipe and a second cooling liquid inlet pipe, the first cooling liquid inlet pipe is communicated with the first cooling cavity, and the second cooling liquid inlet pipe is communicated with the water inlet hole; the cooling liquid outlet pipe comprises a first cooling liquid outlet pipe and a second cooling liquid outlet pipe, the first cooling liquid outlet pipe is communicated with the first cooling cavity, and the second cooling liquid outlet pipe is communicated with the water outlet hole.

Optionally, the second housing portion further comprises a base plate fixed to a top end of the coupling tube, the bearing housing being bolted to the base plate; the second cooling liquid outlet pipe and the second cooling liquid inlet pipe are fixed on the bottom plate.

Optionally, the feed inlet department of first shell is connected with the suction tube, the suction tube deviates from the one end of first shell is equipped with the filter screen.

Optionally, the transmission shaft includes a plurality of transmission short shafts and couplers, the connection pipe includes a plurality of connection short pipes, the connection short pipes are provided with windows at the couplers, and the wall portions of the connection short pipes are provided with through holes.

Optionally, be equipped with the apron between first shell with the second shell, the apron deviates from one side of first shell is equipped with prevents revolving the muscle.

Compared with the prior art, the heavy-duty submerged pump of the embodiment of the utility model has the following beneficial effects:

the heavy-duty submerged pump comprises a shell, a water outlet pipe, an impeller, a transmission shaft and a motor. Wherein, the shell is provided with a feed inlet, a discharge outlet 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 arranged in the cavity and used for driving the material to move from the feed inlet to the discharge outlet; the transmission shaft is arranged on the shell through a bearing and connected with the impeller; the motor is connected with the transmission shaft and is used for driving the impeller to rotate; the shell is provided with a cooling cavity for cooling the bearing, and the cooling cavity is provided with a liquid inlet and a liquid outlet.

The heavy-duty submerged pump is suitable for pumping slurry media with high solid content and large specific gravity, such as ore pulp, coal slurry, lime slurry, alumina slurry and the like. The motor drives the impeller to rotate through the transmission shaft, the impeller sucks external slurry from the feed inlet, the discharge port is discharged, and the slurry is conveyed to the other end of the water outlet pipe. Meanwhile, the cooling liquid is input from the cooling liquid inlet pipe, flows into the cooling cavity and flows out from the cooling liquid outlet pipe, the cooling liquid has a cooling effect on the heavy-load bearing, and the service life of the bearing is prolonged. That is, this heavy-duty submerged pump has reduced the bearing temperature under the heavy load through the design of cooling chamber.

Drawings

Fig. 1 is a schematic view of a heavy-duty submerged pump according to an embodiment of the present invention.

Fig. 2 is a schematic view of a bearing housing.

Fig. 3 is a schematic view of the coupling stub.

Fig. 4 is a schematic view of the cover plate.

In the figure, 100, the housing; 110. a first housing portion; 111. a feed inlet; 112. a discharge port; 113 a cavity; 114. a cover plate; 115. anti-rotation ribs; 120. a second shell portion; 121. a cooling chamber; 121a, a first cooling cavity; 121b, a second cooling cavity; 121c and a water inlet hole; 121d, water outlet holes; 122. a bearing housing; 123. a connecting pipe; 123a, a bearing seat; 123b, a coupling stub; 123c, a window; 123d, a through hole; 124. a base plate; 130. a bearing; 131. a thrust bearing; 132. a radial bearing; 133. an auxiliary sliding bearing;

200. a water outlet pipe;

300. an impeller;

400. a drive shaft; 410. a drive stub shaft; 420. a coupling;

500. a motor;

600. a cooling liquid inlet pipe; 610. a first cooling liquid inlet pipe; 620. a second cooling liquid inlet pipe;

700. a coolant outlet pipe; 710. a first coolant outlet pipe; 720. a second coolant outlet pipe; 800. a suction tube; 810. and (5) filtering by using a filter screen.

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 present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a schematic diagram of a heavy-duty submerged pump according to a preferred embodiment of the present invention is shown. The heavy-duty submerged pump comprises a shell 100, a water outlet pipe 200, an impeller 300, a transmission shaft 400, a motor 500, a cooling liquid inlet pipe 600 and a cooling liquid outlet pipe 700. The submerged pump mainly functions to lift the level of the slurry, wherein the casing 100 is used as a mounting base for other parts, the water outlet pipe 200 is used as a carrier for conveying the slurry, the impeller 300, the transmission shaft 400 and the motor 500 are used as a power system of the submerged pump, and the cooling liquid inlet pipe 600 and the cooling liquid outlet pipe 700 are used for cooling the bearing 130. Each of these components will be described separately below.

As for the casing 100, it includes a first casing portion 110 and a second casing portion 120, the first casing portion 110 for receiving the impeller 300, and the second casing portion 120 for isolating the drive shaft 400 from the outside. Specifically, the first shell portion 110 is provided with a feed inlet 111, a discharge outlet 112 and a cavity 113, the cavity 113 is provided with an impeller 300, the feed inlet 111, the cavity 113 and the discharge outlet 112 are flow paths of slurry in the first shell portion 110, and the slurry flows into the water outlet pipe 200 after flowing out of the discharge outlet 112 and reaches a higher position through the water outlet pipe 200.

Referring primarily to FIG. 2 and secondarily to FIGS. 1 and 3, a second shell portion 120 is coupled to the first shell portion 110. The bearing 130 is a conventional arrangement on the second casing part 120, and the temperature of the bearing 130 is high in case of heavy load, so that the cooling cavity 121 is provided near the bearing 130 to forcibly cool the bearing 130. Preferably, the cooling cavity 121 is disposed around the bearing 130. In addition, in order to enable the submerged pump to deliver slurry to a higher position, not only the length of the outlet pipe 200 needs to be matched, but also the length of the transmission shaft 400 needs to be matched, and the housing 100 of the transmission shaft 400 needs to be matched. Specifically, for installation convenience, the second casing portion 120 includes a bearing housing 122 and a coupling pipe 123. The bearing housing 122 is mounted with a thrust bearing 131 and a radial bearing 132. It is understood that the thrust bearing 131 is also referred to as a thrust bearing 130 for receiving an axial force of the drive shaft 400. Radial bearing 132 is used to receive the radial force of drive shaft 400. It is understood that the bearing 130 of the present invention is a heavy duty bearing 130. Preferably, the thrust bearing 131 is disposed above the radial bearing 132, and the two are disposed at a distance from each other. The coupling pipe 123 is mounted with an auxiliary sliding bearing 133, and the auxiliary sliding bearing 133 can reduce friction between the drive shaft 400 and the housing 100 and abrasion of the surface of the drive shaft 400. For convenience of installation, the coupling pipe 123 may be split into a plurality of coupling stubs 123b for installation.

It is worth mentioning that the cooling chamber 121 includes a first cooling chamber 121a and a second cooling chamber 121b. The first cooling chambers 121a are provided in two, respectively, in the bearing housing 122 near the thrust bearing 131 and the radial bearing 132. The second cooling chamber 121b includes a water chute (not shown), a water inlet hole 121c, and a water outlet hole 121d. Conventionally, the water guide groove is annularly provided to the auxiliary sliding bearing 133, the water inlet hole 121c and the water outlet hole 121d are provided to the bearing housing 123a, and the water inlet hole 121c and the water outlet hole 121d communicate with the water guide groove. The cooling liquid flows through the water inlet hole 121c, the water chute and the water outlet hole 121d in sequence.

Regarding the water outlet pipe 200, one end is connected to the outlet port 112, and the other end is disposed higher than the outlet port 112. The height of the other end of the water outlet pipe 200 can be adjusted according to the requirements of the real situation. In this embodiment, the other end height of outlet pipe 200 exceeds the setting of coupling pipe 123, in other embodiments, can also be the multiple condition, the utility model discloses it is not repeated here.

Referring to fig. 1 and 4, the impeller 300 is accommodated in the cavity 113. 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. In addition, a cover plate 114 is disposed between the first and second case portions 110 and 120, and the cover plate 114 functions to partition the first and second case portions 110 and 120. The cover plate 114 is provided with a rotation preventing rib 115 at a side facing away from the first casing part 110, and the rotation preventing rib 115 is used for eliminating vortex loss and rotation vortex vibration generated by the rotation of the liquid.

Referring primarily to fig. 3 and secondarily to fig. 1, with respect to the drive shaft 400, it connects the impeller 300 and the motor 500. Preferably, the transmission shaft 400 comprises a plurality of transmission stub shafts 410 and couplings 420, wherein the transmission stub shafts 410 are spliced together through the couplings 420, and a key connection form and the like are arranged in the middle. Preferably, the coupling stub 123b is opened with a window 123c at the coupling 420. The window 123c is used for inserting a professional tool when the stub shaft is coupled, or for observing the condition of the joint of the driving stub shaft 410, and can be used for extracting the cooling liquid leaked in the coupling pipe 123. Similarly, the wall of the coupling stub 123b is provided with a through hole 123d, and the through hole 123d is used to draw out the coolant leaked in the coupling pipe 123. The coolant mainly leaks from the second cooling chamber 121b when the axial sealing condition of the auxiliary sliding bearing 133 is poor.

With respect to motor 500, which is coupled to drive shaft 400, motor 500 is used to drive rotation of impeller 300 and is conventional in the art of submerged pumps. Specifically, the motor 500 is also provided with a motor 500 seat, etc., because it is prior art, the present invention is not described herein.

Regarding the coolant inlet pipe 600 and the coolant outlet pipe 700, they communicate with the cooling chamber 121, respectively. Specifically, the cooling fluid inlet pipe 600 includes a first cooling fluid inlet pipe 610 and a second cooling fluid inlet pipe 620, the first cooling fluid inlet pipe 610 is communicated with the first cooling chamber 121a, and the second cooling fluid inlet pipe 620 is communicated with the water inlet hole 121c. Similarly, the coolant outlet pipe 700 includes a first coolant outlet pipe 710 and a second coolant outlet pipe 720, the first coolant outlet pipe 710 communicates with the first cooling chamber 121a, and the second coolant outlet pipe 720 communicates with the water outlet hole 121d. In addition, the second case portion 120 further includes a base plate 124, the base plate 124 is welded to the top end of the coupling pipe 123, and the bearing housing 122 is bolted to the base plate 124. Of course, in other embodiments, the connection manner between the bottom plate 124 and the coupling pipe 123 and the bearing housing 122 may be other types, and the invention is not limited thereto. Preferably, the second coolant outlet pipe and the second coolant inlet pipe are fixed to the base plate 124.

It is worth mentioning that a suction pipe 800 is connected to the feed port 111 of the first housing part 110 in order to guide the slurry into the pump housing of the impeller 300. In order to reduce impurities brought into the pump casing of the impeller 300 by the slurry, a filter screen 810 is provided at an end of the suction pipe 800 facing away from the first casing part 110.

As for various sealing means adopted by the heavy-duty submerged pump, such as an O-shaped ring and the like, the sealing means are not the main innovation points, so that the sealing means are omitted.

The embodiment of the utility model provides a use: the motor 500 drives the impeller 300 to rotate through the transmission shaft 400, and the impeller 300 sucks external slurry from the feed port 111, flows into the discharge port 112 and the water outlet pipe 200, and reaches the other end of the water outlet pipe 200. Meanwhile, the coolant is input from the first coolant inlet pipe 610 and the second coolant inlet pipe 620, flows into the first cooling chamber 121a and the second cooling chamber 121b, and flows out from the first coolant outlet pipe 710 and the second coolant outlet pipe 720. Through heat conduction, the cooling liquid has a cooling effect on the heavy-duty bearing 130, and the service life of the bearing 130 is prolonged.

To sum up, the utility model provides a heavy load type submerged pump is suitable for the slurry medium that pump solid content is high, proportion is big, like ore pulp, coal slurry, lime thick liquid and aluminium oxide thick liquid etc.. The submerged pump is provided with a thrust bearing 131, a radial bearing 132 and an auxiliary sliding bearing 133, a cooling cavity 121 is arranged near the bearing 130, the cooling cavity 121 is communicated with a cooling liquid pipeline, the working temperature of the bearing 130 is reduced through cooling liquid, the bearing 130 can run normally and safely, the service life of the bearing 130 is prolonged, and the running cost and the maintenance cost of the submerged pump are reduced.

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 (10)

1. A heavy duty submerged pump comprising:

the shell is provided with a feed inlet, a discharge outlet 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 arranged in the cavity and used for driving the material to move from the feed port to the discharge port;

a drive shaft mounted to the housing through a bearing and connected to the impeller;

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

the shell is provided with a cooling cavity for cooling the bearing, and the cooling cavity is provided with a liquid inlet and a liquid outlet.

2. The heavy-duty submerged pump of claim 1, wherein the housing comprises a first housing portion and a second housing portion disposed above the first housing portion, and the inlet port, the outlet port, and the cavity are disposed in the first housing portion;

the transmission shaft is sleeved on the second shell portion, and the bearing is installed between the second shell portion and the transmission shaft.

3. The heavy duty submerged pump of claim 2, further comprising a coolant inlet pipe communicating with the liquid inlet and a coolant outlet pipe communicating with the liquid outlet;

the cooling cavity is disposed around the bearing.

4. A heavy-duty submerged pump according to claim 3, characterized in that the second casing part comprises a bearing housing and a coupling tube, the bearings comprising a thrust bearing, a journal bearing and an auxiliary sliding bearing, the thrust bearing and the journal bearing being mounted to the bearing housing, the coupling tube being provided with a bearing seat, the auxiliary sliding bearing being mounted to the bearing seat.

5. The heavy duty submerged pump of claim 4, wherein said cooling chambers comprise a first cooling chamber and a second cooling chamber, said first cooling chamber being provided in two, respectively at said bearing housing adjacent to said thrust bearing and said radial bearing;

the second cooling cavity comprises a water guide groove, a water inlet hole and a water outlet hole, the water guide groove is annularly arranged on the auxiliary sliding bearing, the water inlet hole and the water outlet hole are arranged on the bearing seat, and the water inlet hole and the water outlet hole are communicated with the water guide groove.

6. The heavy duty submerged pump of claim 5, wherein the coolant inlet pipe comprises a first coolant inlet pipe and a second coolant inlet pipe, the first coolant inlet pipe is communicated with the first cooling cavity, and the second coolant inlet pipe is communicated with the water inlet hole;

the coolant liquid exit tube includes first coolant liquid exit tube and second coolant liquid exit tube, first coolant liquid exit tube intercommunication first cooling chamber, second coolant liquid exit tube intercommunication the apopore.

7. The heavy-duty submerged pump of claim 6, wherein the second housing portion further comprises a bottom plate fixed to a top end of the coupling tube, the bearing housing being bolted to the bottom plate;

the second cooling liquid outlet pipe and the second cooling liquid inlet pipe are fixed on the bottom plate.

8. The heavy duty submerged pump of claim 2, wherein a suction pipe is connected to the inlet of the first casing portion, and a strainer is disposed at an end of the suction pipe facing away from the first casing portion.

9. The heavy-duty submerged pump according to claim 4, wherein the transmission shaft comprises a plurality of transmission short shafts and couplers, the connection pipes comprise a plurality of connection short pipes, the connection short pipes are provided with windows at the couplers, and the walls of the connection short pipes are provided with through holes.

10. The heavy-duty submerged pump according to claim 2, wherein a cover plate is disposed between the first casing portion and the second casing portion, and a side of the cover plate facing away from the first casing portion is provided with an anti-rotation rib.

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