CN216157913U

CN216157913U - Sand suction pump

Info

Publication number: CN216157913U
Application number: CN202122195574.7U
Authority: CN
Inventors: 马连军; 马鸣远
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-12
Filing date: 2021-09-12
Publication date: 2022-04-01
Anticipated expiration: 2031-09-12

Abstract

The utility model discloses a sand suction pump, which comprises a pump shell, a pump cover, an impeller, a pump shaft and a bearing, wherein the impeller is arranged at one end of the pump shaft through a threaded shaft hole in the middle of the impeller; the disassembly ring comprises an assembly ring and more than two disassembly blocks uniformly arranged on the inner periphery of the assembly ring; each disassembly block bears the pressure between the impeller and the shaft shoulder in a balanced manner, one surface of each disassembly block, facing the pump shaft, is a tile-shaped surface, the left surface and the right surface of each disassembly block are parallel and vertical to the pump shaft, and each disassembly block is provided with at least one radially-through disassembly screw hole; the mounting bolts penetrate through the mounting holes to fix the dismounting blocks on the inner side of the assembling ring. When the impeller is fixedly installed on the pump shaft, the more than two disassembly blocks are pressed on the periphery of the pump shaft by the impeller and the shaft shoulder. When the impeller needs to be disassembled, the disassembling blocks are disassembled firstly, and after all the disassembling blocks are ejected out from the space between the shaft sleeve and the shaft shoulder, the pressure between the impeller and the shaft sleeve and between the impeller and the shaft shoulder is eliminated, and the impeller can be easily disassembled from the threaded shaft hole of the pump shaft.

Description

Sand suction pump

Technical Field

The utility model relates to a pump, in particular to a sand suction pump for sand mining operation.

Background

A sand suction pump for sand mining operation is generally composed of a pump shell, a pump cover, an impeller, a pump shaft, a bearing assembly and the like, wherein the impeller is installed on a shaft head at one end of the pump shaft through a threaded shaft hole in the middle of the impeller. The sand suction pump has long working time and severe working environment, after the sand suction pump is used, the impeller and the pump shaft of the sand suction pump are combined very tightly, and the impeller is difficult to detach from the pump shaft when the pump needs to be maintained or replaced.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: aiming at the defects in the prior art, the sand suction pump with the impeller easy to disassemble is provided.

The technical scheme is as follows: the utility model provides a sand suction pump which comprises a pump shell, a pump cover, an impeller, a pump shaft and a bearing, wherein the impeller is arranged at one end of the pump shaft through a threaded shaft hole in the middle of the impeller; the novel structure is characterized in that a dismounting ring is sleeved between the impeller and the shaft shoulder of the pump shaft; the disassembly ring comprises an assembly ring and two or more disassembly blocks uniformly arranged on the inner periphery of the assembly ring, and each disassembly block bears the pressure between the impeller and the shaft shoulder in a balanced manner; one surface of each disassembly block facing the pump shaft is provided with a tile-shaped surface matched with the cylindrical surface of the pump shaft, the left surface and the right surface of each disassembly block are parallel and vertical to the pump shaft, and each disassembly block is at least provided with a disassembly screw hole which is radially communicated from the tile-shaped surface and is provided with an internal thread; and the assembling ring is provided with mounting holes corresponding to the disassembling blocks, and mounting bolts penetrate through the mounting holes to fix the disassembling blocks on the inner side of the assembling ring.

For a pump with larger specification or a pump with larger impeller pressure, two or more disassembling screw holes can be arranged on part or all of the disassembling blocks, namely more than two disassembling screw holes can be arranged on at least one disassembling block, so that the disassembling blocks are easier to disassemble.

In order to facilitate positioning and installation, and simultaneously ensure that the pressure of each disassembly block is uniform, and the disassembly is more convenient, the disassembly blocks sequentially form a ring surrounding the pump shaft end to end in the circumferential direction of the pump shaft; at the moment, the assembly ring is arranged outside, and forms an inner ring and an outer ring structure which are matched with each other with an inner ring formed by the disassembly blocks.

Furthermore, in order to facilitate the positioning of the disassembly block, the assembly ring is provided with a disassembly block positioning cavity.

When the impeller is fixedly installed on the pump shaft, the more than two disassembly blocks are pressed on the periphery of the pump shaft by the impeller and the shaft shoulder or pressed on the periphery of the pump shaft by the impeller, the shaft sleeve and the shaft shoulder. When the impeller needs to be disassembled, the mounting bolts between the assembling ring and each disassembling block are disassembled firstly to separate the assembling ring from the disassembling blocks, then the matched disassembling bolts are used for being screwed inwards into each disassembling screw hole, and the disassembling blocks can be ejected outwards by using the huge reaction force of the disassembling bolts on the disassembling blocks. When all the disassembly blocks are ejected out from the space between the shaft sleeve and the shaft shoulder, the pressure between the impeller and the shaft sleeve and the pressure between the impeller and the shaft shoulder are eliminated, and the impeller can be easily disassembled from the threaded shaft hole of the pump shaft.

Drawings

FIG. 1 is a schematic diagram of the general structure of the sand pump of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of a dismounting ring structure according to the first embodiment.

Fig. 4 is a schematic view of a detaching block according to the first embodiment.

Fig. 5 is a schematic view of an assembly ring structure of the second embodiment.

The figure shows that: the pump casing 1, the pump cover 2, the impeller 3, the threaded shaft hole 30, the pump shaft 4, the shaft shoulder 40, the bearing 5, the shaft sleeve 6, the assembling ring 7, the mounting hole 70, the annular bottom 71, the disassembling block 9, the tile-shaped surface 92, the disassembling screw hole 93 and the disassembling bolt 94.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings. In the following embodiments, a sand suction pump is taken as an example, and other pumps for pumping liquid such as oil or the like can be implemented by reference to the same reference.

The first embodiment is as follows: see figures 1 to 4.

A sand suction pump is easy to disassemble an impeller and comprises a pump shell 1, a pump cover 2, an impeller 3, a pump shaft 4, a bearing 5 and a shaft sleeve 6, wherein the impeller 3 is installed at one end of the pump shaft 4 through a threaded shaft hole 30 in the middle of the impeller 3, the shaft sleeve 6 is sleeved between the impeller 3 and a shaft shoulder 40 of the pump shaft 4, and a disassembling ring is pressed between the shaft sleeve 6 and the shaft shoulder 40.

The disassembling ring of the embodiment comprises an assembling ring 7 and four disassembling blocks 9 which are arranged end to end in sequence and uniformly on the inner circumference of the assembling ring 7. The inner ring formed by the four disassembly blocks 9 and the assembly ring 7 on the outer side of the inner ring form a matched inner ring structure and an outer ring structure. One surface of each disassembly block 9 facing the pump shaft 4 is arranged as a tile surface 92 matched with the cylindrical surface of the pump shaft 4, namely one part of the inner annular surface of the cylinder; the left surface and the right surface of the disassembly block 9 are parallel and vertical to the pump shaft, the left surface of the disassembly block 9 is connected with the end surface of the shaft sleeve 6, and the right surface is connected with the ring surface of the shaft shoulder 40; the middle part of each disassembly block 9 is provided with a disassembly screw hole 93 which is radially penetrated from the tile-shaped surface of the disassembly block and is provided with internal threads, wherein the radial penetration of the disassembly screw hole 93 refers to that the disassembly screw hole 93 radially penetrates through the inner side and the outer side of the disassembly block 9 in the pump shaft 4. The assembling ring 7 is provided with four mounting holes corresponding to the disassembling screw holes 93 of the disassembling blocks 9, and disassembling bolts 94 penetrate through the mounting holes to fix the disassembling blocks 9 on the inner side of the assembling ring 7.

Of course, the dismounting blocks 9 may be provided with separate mounting screw holes, the mounting ring 7 may be provided with corresponding mounting holes, and the respective dismounting blocks 9 may be fixed to the inside of the mounting ring 7 by separate mounting bolts.

When the impeller 3 is fixedly installed on the pump shaft 4, the four disassembly blocks 9 forming the inner ring of the disassembly ring are uniformly pressed on the periphery of the pump shaft 3 by the shaft sleeve 6 and the shaft shoulder 40, and the pressure between the shaft sleeve 6 and the shaft shoulder 40 is uniformly borne. When the impeller 3 needs to be disassembled, the mounting bolts between the assembling ring 7 and the disassembling blocks 9 are firstly disassembled to separate the assembling ring 7 from the four disassembling blocks 9 of the inner ring, then the disassembling bolts 94 matched with the disassembling screw holes 93 of the disassembling blocks 9 are used and screwed inwards into the disassembling screw holes 93, when the disassembling bolts 94 prop against the pump shaft 4 from the tile-shaped surface 92 at the inner side of the disassembling block 9, the disassembling bolts 94 generate huge reaction force to the disassembling blocks 9, and the disassembly blocks 9 can be ejected out by the reaction force. When all the disassembly blocks 9 are disassembled from the shaft sleeve 6 and the shaft shoulder 40, the pressure between the impeller 3 and the shaft sleeve 6 and the shaft shoulder 40 is eliminated, and the impeller 3 can be easily disassembled from the threaded shaft hole 30 of the pump shaft 4.

Example two: this embodiment differs from the first embodiment only in the shape of the mounting ring 7.

In order to facilitate the quick and accurate positioning and installation of the dismounting block 9, one end of the inner annular surface of the mounting ring 7 is retracted to form a concave cavity, which forms a positioning cavity of the dismounting block 9, as shown in fig. 5. The cavity has an annular bottom 71, the inner diameter of the annular bottom 71 between the inner diameter and the outer diameter of the inner ring formed by the disassembly block 9 is larger than the outer diameter of the adjacent shaft sleeve 6 or shaft shoulder 40, and when the disassembly block 9 is pressed on the outer periphery of the pump shaft 4 by the shaft sleeve 6 and the shaft shoulder 40, the assembly ring 7 is not contacted with the shaft shoulder 40 or the shaft sleeve 6 and is not stressed by the shaft shoulder 40 or the shaft sleeve 6. The assembling ring 7 is provided with four mounting holes 70 corresponding to the disassembling screw holes 93 of the disassembling blocks 9, and disassembling bolts 94 pass through the mounting holes 70 to fix each disassembling block 9 on the inner side of the assembling ring 7.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way.

Claims

1. A sand suction pump comprises a pump shell, a pump cover, an impeller, a pump shaft and a bearing, wherein the impeller is arranged at one end of the pump shaft through a threaded shaft hole in the middle of the impeller; it is characterized in that a dismounting ring is sleeved between the impeller and the shaft shoulder of the pump shaft; the disassembly ring comprises an assembly ring and two or more disassembly blocks uniformly arranged on the inner periphery of the assembly ring; one surface of each disassembly block facing the pump shaft is provided with a tile-shaped surface matched with the cylindrical surface of the pump shaft, the left surface and the right surface of each disassembly block are parallel and vertical to the pump shaft, and each disassembly block is at least provided with a disassembly screw hole which is radially communicated from the tile-shaped surface and is provided with an internal thread; and the assembling ring is provided with mounting holes corresponding to the disassembling blocks, and mounting bolts penetrate through the mounting holes to fix the disassembling blocks on the inner side of the assembling ring.

2. The sand pump as recited in claim 1, wherein the disassembly blocks form a ring around the pump shaft in end-to-end succession in the circumferential direction of the pump shaft.

3. The sand pump as claimed in claim 1, wherein at least one of the disassembly blocks has two or more disassembly screw holes.

4. The sand pump as claimed in claim 1, wherein the mounting ring is provided with a positioning cavity for the removable block.