CN219242213U - Large-scale high-efficient silt pump - Google Patents

Abstract

The utility model discloses a large-scale efficient sand pump which comprises a bracket, wherein a motor is fixedly connected in the bracket, a thrust bearing part is arranged in the motor, the thrust bearing part is sleeved on a motor shaft, the motor shaft extends into a pump body and is fixedly connected with an impeller at the tail end, a rear guard plate is fixed on one side of the pump body, which is close to the motor, through a connecting body bolt, a front guard plate is fixed on the other side of the pump body through a pump cover bolt, the front guard plate is of a split structure, and the rear guard plate is of a split structure. The utility model has the advantages of high service efficiency, low energy consumption, low abrasion of internal components and low maintenance cost in the later period of the sand pump, and avoids the problem of waste caused by the selection of a large bearing part in the past.

Description

Large-scale high-efficient silt pump

Technical Field

The utility model relates to the field of water pumps, in particular to a large-scale efficient sand pump.

Background

At present, enterprises at home and abroad directly use a large-scale slurry pump in a mineral separation grading process of a conveying mine as a sediment pump in working conditions of a shield system relay pump station, a dredger for dredging a river channel, blowing sand for filling sea and the like, and the large-scale slurry pump needs to be matched with a high-power motor or a diesel engine, so that the normal power is above 1120KW, the energy requirement is high, and the overall efficiency is low.

In the mine ore dressing classification flow, when the slurry is conveyed by the large slurry pump, the slurry partially falls back into the gap between the impeller and the front guard plate and the gap between the large slurry pump and the rear guard plate, thick and thin particles in the slurry can rub in the continuous rotation of the impeller to cause serious abrasion of the front guard plate neck position and the rear guard plate neck position, the whole front guard plate and the whole rear guard plate are required to be replaced in later maintenance, and the maintenance cost is high.

Auxiliary blades are arranged on the front cover plate and the rear cover plate of an impeller in a large slurry pump in a mine ore dressing classification flow, slurry entering gaps between the impeller and a front guard plate are reduced by the auxiliary blades of the front cover plate, slurry flowing into gaps between the impeller and a rear guard plate is reduced by the auxiliary blades of the rear cover plate, pressure between the impeller and the front guard plate is reduced, axial force is reduced, residual axial force is required to be balanced through a bracket bearing component, and the axial force is usually larger than the first bearing component for balancing, so that waste is easily caused.

Disclosure of Invention

In order to make up for the defects, the utility model provides a large-sized high-efficiency sand pump, which aims to improve the problems of low use efficiency and high energy consumption of a slurry pump in the existing mine beneficiation and classification flow; the front guard plate and the rear guard plate of the internal component are seriously worn, so that the maintenance cost is high; the problem of waste is easily caused by selecting a large bearing part.

The technical problems to be solved by the utility model are realized by adopting the following technical scheme:

the utility model provides a large-scale high-efficient silt pump, includes the bracket, the inside both ends fixedly connected with bearing body of bracket, the motor shaft passes the bearing body extends the bracket both ends, motor shaft one end is connected with the motor, and the other end extends to the pump body inside and at terminal fixedly connected with impeller, the motor shaft is in the bearing body interlude cover has thrust bearing part, the pump body is close to bracket one side is fixed with the backplate through the connector bolt, just the pump body opposite side is fixed with the front guard through the pump cover bolt.

The utility model further discloses the following technology:

preferably, the rear guard plate is of a split structure and comprises a rear guard plate front portion, a rear guard plate rear portion and a second rubber piece, wherein the rear guard plate front portion and the rear guard plate rear portion are fixed through bolt nesting, the second rubber piece is arranged on a contact surface, and a wear-resistant layer is added on one surface, close to a rear cover plate of the impeller, of the rear guard plate front portion.

Preferably, the bearing body comprises a first bearing and a second bearing, and the first bearing and the second bearing are fixed at two ends of the inner wall of the bracket through bolts.

Preferably, the bearing body comprises a first bearing and a second bearing, and the first bearing and the second bearing are fixed at two ends of the inner wall of the bracket through bolts.

Preferably, the thrust bearing component comprises a third bearing, a split snap ring, a locking ring, an anti-rotation key and a thrust disc, wherein the third bearing is sleeved on the outer wall of the motor shaft, the locking ring is fixedly connected with the third bearing, the split snap ring is fixed on one side of the locking ring through a bolt, the other end of the split snap ring is attached to the first bearing surface, the thrust box is fixed on the other side of the third bearing through the bolt, and the thrust box is fixedly connected on the bracket shell.

Preferably, the impeller comprises a front cover plate and a rear cover plate, wherein the outer surface of the front cover plate is free of auxiliary blades, and the outer surface of the rear cover plate is free of auxiliary blades.

Compared with the prior art, the utility model provides a large-scale high-efficiency sand pump, which has the following beneficial effects:

1. the front guard plate and the rear guard plate are in split structural design, and the wear-resistant layer is added on one surface of the front part of the front guard plate and the front part of the rear guard plate, which is used as the inner wall of the pump body, so that the wear resistance of the front guard plate and the rear guard plate is improved, the whole construction is not replaced due to the abrasion of the front guard plate and the rear guard plate, and the maintenance cost is saved.

2. The impeller comprises a front cover plate and a rear cover plate, the surfaces of the front cover plate and the rear cover plate are provided with auxiliary blades, the auxiliary blades are reduced, the contact area of the outer surface of the impeller is reduced, and the service life of the impeller is prolonged.

3. In order to balance redundant axial force in the pump body, a bearing component is arranged on the motor shaft, an independent thrust bearing in the bearing component bears the axial force, the thrust bearing is fixed on the bracket, the whole bearing capacity is strong, the structure is mature and reliable, and the waste caused by the selection of a large bearing component in the past is avoided.

Drawings

FIG. 1 is a schematic view of a pump body according to the present utility model

FIG. 2 is a schematic view of a bearing component structure according to the present utility model

FIG. 3 is a schematic view showing the split structure of the front guard plate of the present utility model

FIG. 4 is a schematic view showing the split structure of the backplate according to the present utility model

FIG. 5 is a schematic view showing the structure of the assembled front guard board

FIG. 6 is a schematic view showing the assembled rear guard plate

FIG. 7 is a schematic front view of a motor and bracket connection of the present utility model

FIG. 8 is a schematic side view of a motor and bracket connection of the present utility model

FIG. 9 is a view showing a large area of a connection portion between a thrust bearing member and a bracket according to the present utility model

FIG. 10 is a cross-sectional view of a connection portion between a thrust bearing assembly and a motor casing of the present utility model

In the figure: the pump comprises a pump body 1, a pump cover 2, a front guard plate 3, a rear guard plate 4, a connecting body 5, a motor shaft 6, a bracket 7, a bearing body 8, an impeller 9, a circlip 10, a guide pin 11, a spring 12, a front guard plate 31, a front guard plate 32, a first rubber piece 33, a rear guard plate 41, a rear guard plate 42, a second rubber piece 43, a bracket shell 81, a first bearing 82, a second bearing 83, a thrust bearing component 84, a front cover plate 91, a rear cover plate 92, a third bearing 841, a split 842 clasp, a 843 clasp, an 844 anti-rotation key 845 thrust box.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus 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 present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; 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 present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The utility model will be further described with reference to the drawings and examples.

1-10, a large-scale high-efficient slush pump, including bracket 7, the inside both ends fixedly connected with bearing body 8 of bracket 7, motor shaft 6 passes bearing body 8 extends the bracket 7 both ends, motor shaft 6 one end is connected with the motor (not shown in the figure), and the other end extends to the inside of pump body 1 and at terminal fixedly connected with impeller 9, motor shaft 6 is in bearing body 8 interlude cover has thrust bearing part 84, the pump body 1 is close to bracket 7 one side is fixed with backplate 4 through connector 5 bolt, just pump body 1 opposite side is fixed with front guard plate 3 through pump cover 2 bolt, front guard plate 3 is split type structure, backplate 4 is split type structure.

The front guard plate 3 comprises a front guard plate front part 31, a front guard plate rear part 32 and a first rubber piece 33, the front guard plate front part 31 and the front guard plate rear part 32 are nested and fixed through bolts, the first rubber piece 33 is arranged on the contact surface, and the chromium content is increased on one surface of the front guard plate front part 31, which is close to the front cover plate 91 of the impeller 9, so that the wear resistance of the front guard plate 3 is increased.

The rear guard plate 4 comprises a rear guard plate front part 41, a rear guard plate rear part 42 and a second rubber piece 43, the rear guard plate front part 41 and the rear guard plate rear part 42 are nested and fixed through bolts, the second rubber piece 43 is arranged on the contact surface, and the chromium content is increased on one surface of the rear guard plate front part 41, which is close to the rear cover plate 92 of the impeller 9, so that the wear resistance of the rear guard plate 4 is increased.

Through the measure of increasing chromium content on the surfaces of the front guard plate 3 and the rear guard plate 4, the hardness and the wear resistance of carbon steel are improved, the service lives of the front guard plate 3 and the rear guard plate 4 are prolonged, and the split structure of the front guard plate 3 and the rear guard plate 4 also enables the sand pump to be free from replacing the whole part during the later maintenance, so that the maintenance cost is increased.

In addition to increasing the content of chromium element, other alloying elements such as manganese, titanium, etc. may be added in order to improve the strength and wear resistance of the front and rear shields 3, 4.

The bearing body 8 includes a first bearing 82 and a second bearing 81, and the first bearing 82 and the second bearing 81 are fixed to both ends of the inner wall of the bracket housing 81 by bolts.

The thrust bearing component 84 comprises a third bearing 841, a split snap ring 842, a locking ring 843, an anti-rotation key 844 and a thrust box 845, the third bearing 841 is sleeved on the outer wall of the motor shaft 6, the locking ring 843 and the third bearing 841 are fixedly connected, the split snap ring 842 is fixed on one side of the locking ring 843 through bolts, the other end of the split snap ring 842 is attached to the surface of the first bearing 82, the thrust box 845 is fixed on the other side of the third bearing 841 through bolts, the split snap ring 842, the locking ring 843, the thrust box 845 and the third bearing 841 are connected, the thrust box 845 and the third bearing 841 are fixed into a whole through bolts, the lower end of the thrust box 841 is clamped on the bracket 7, the upper end of the thrust box 845 is fixed on the inner top surface of the bracket shell 81 through bolts, the anti-rotation key 844 is additionally arranged between the thrust box 845 and the bolts, and the functions of increasing friction force and fixing the thrust box 845 are achieved.

As shown in fig. 9, the lower end of the thrust box 845 is provided with a spring 12, and is fixed by the connection of the guide pin 11 and the third bearing 841, and the circlip 10 is fixed to the end of the guide pin 11.

As shown in fig. 10, the thrust box 845 and the bracket housing 81 are fixed by bolts and pins, wherein the axes of the bolts and pins are coincident with the radius of the thrust box 845.

It should be noted that, when the slurry enters the pump body 1 from the suction inlet, through the acceleration of the impeller 9, a low-pressure area is formed at the center of the impeller 9, a high-pressure area is formed at the outer edge area of the impeller 9, the slurry is continuously pressed in the low-pressure area, the generated axial force is transmitted to the thrust bearing component 84 through the motor shaft 6, the bearing capacity of the thrust bearing component is strong, the structure is mature and reliable, and the waste caused by the prior need of selecting a large number of bearing components is avoided.

The impeller 9 includes front shroud 91, back shroud 92 with the front shroud 91 surface, the one side that is close to front guard plate 3 and back guard plate 4 promptly does not set up vice blade, has reduced the surface contact of impeller 9, increases the thickness of impeller 9 back shroud 92 simultaneously, makes the back shroud press close to back guard plate 4, has reduced the thick liquid volume that thick liquid got into between the clearance of back shroud 92 and back guard plate 4, reduces inside friction, and then has prolonged the life of impeller 9 and front guard plate 3 and back guard plate 4.

The working principle of the large-scale high-efficiency silt pump is as follows:

when the motor starts to work, the motor shaft 6 starts to rotate, the motor shaft 6 drives the impeller 9 to rotate, a low-pressure area is formed in the central area of the impeller 9, slurry is pressed into the pump body 1, the impeller 9 rotates at a high speed, a high-pressure area is formed at the outer edges of blades of the impeller 9, the slurry is thrown out through the discharge outlet, electric energy is converted into kinetic energy and potential energy of the slurry in the whole process, part of the slurry falls back into a gap between the impeller 9 and the front guard plate 3 and the rear guard plate 4 in the conveying process, the auxiliary blades of the impeller 9 are reduced, the thickness of the rear guard plate 92 is increased, meanwhile, the front guard plate 3 and the rear guard plate 4 adopt a split structure, chromium content is increased on the inner surfaces of the front guard plate 3 and the rear guard plate 4, the abrasion resistance of the whole parts is increased, the axial force between the impeller 9 and the front guard plate 3, the impeller 9 and the rear guard plate 4 is reduced, redundant axial force in the pump body 1 is transmitted to the thrust bearing part 84 through the motor shaft 6, the thrust bearing part 84 is sleeved on the motor shaft 6 and is fixed on the bracket 7 through bolts, the effect of bearing axial force is achieved, the bearing capacity is strong, and the structure is mature and reliable.

The embodiments of the present utility model are merely described in terms of preferred embodiments of the present utility model, and are not intended to limit the spirit and scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model, and the technical content of the present utility model as claimed is fully described in the claims.

Claims (5)

1. The utility model provides a large-scale high-efficient silt pump, includes the bracket, the inside both ends fixedly connected with bearing body of bracket, its characterized in that, the motor shaft passes the bearing body extends the bracket both ends, motor shaft one end is connected with the motor, and the other end extends to the pump body inside and at terminal fixedly connected with impeller, the motor shaft is in bearing body interlude cover has thrust bearing part, the pump body is close to bracket one side is fixed with the backplate through connector bolt, just the pump body opposite side is fixed with the front guard plate through the pump cover bolt.

2. The large-scale efficient sand pump according to claim 1, wherein the front guard plate is of a split structure and comprises a front guard plate front portion, a front guard plate rear portion and a first rubber piece, the front guard plate front portion and the front guard plate rear portion are fixed in a nested mode through bolts, the first rubber piece is arranged on a contact surface, and a wear-resistant layer is added on one surface of the front guard plate front portion and one surface of the rear guard plate front portion serving as the inner wall of the pump body.

3. The large-scale efficient sand pump according to claim 1, wherein the rear guard plate is of a split structure and comprises a rear guard plate front portion, a rear guard plate rear portion and a second rubber piece, the rear guard plate front portion and the rear guard plate rear portion are fixed in a nested mode through bolts, the second rubber piece is arranged on a contact surface, and a wear-resistant layer is added on one surface, close to the rear guard plate of the impeller, of the rear guard plate front portion.

4. The large-scale high-efficiency sand pump of claim 1, wherein the bearing body comprises a first bearing and a second bearing, and the first bearing and the second bearing are fixed at two ends of the inner wall of the bracket through bolts.

5. The large-scale efficient sand pump according to claim 1, wherein the thrust bearing component comprises a third bearing, a split snap ring, a locking ring, an anti-rotation key and a thrust box, the third bearing is sleeved on the outer wall of the motor shaft, the locking ring is fixedly connected with the third bearing, the split snap ring is fixed on one side of the locking ring through a bolt, the other end of the split snap ring is attached to the first bearing surface, the thrust box is fixed on the other side of the third bearing through a bolt, and the thrust box is fixedly connected to the bracket shell.

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