CN215908063U - Single-stage double-suction horizontal slurry pump - Google Patents
Single-stage double-suction horizontal slurry pump Download PDFInfo
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- CN215908063U CN215908063U CN202122452205.1U CN202122452205U CN215908063U CN 215908063 U CN215908063 U CN 215908063U CN 202122452205 U CN202122452205 U CN 202122452205U CN 215908063 U CN215908063 U CN 215908063U
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Abstract
The utility model discloses a single-stage double-suction horizontal slurry pump, which comprises a base and an outer shell, wherein the outer shell comprises a lower outer shell and an upper outer shell which are connected in a half structure; the inner shell comprises a lower inner shell and an upper inner shell which are connected in a half structure, the bottom of the lower inner shell is fixed in the lower outer shell, the lower inner shell is used as an inner pump body, and two axial ends of the lower inner shell and the upper inner shell are respectively provided with a rotating shaft sealing part; the rotor component comprises a rotating shaft and an impeller, wherein two ends of the rotating shaft are respectively and rotatably connected to the bearing body, and the impeller is arranged in the middle of the rotating shaft and positioned in the inner shell; the feeding end is connected with an inlet flange of the outer shell and an inlet end of the inner shell; the discharge end is connected with the outlet flange of the outer shell and the outlet end of the inner shell.
Description
Technical Field
The utility model relates to the technical field of pumps, in particular to a single-stage double-suction horizontal slurry pump.
Background
The existing slurry pump mainly comprises a horizontal type and a vertical type (as shown in figures 1 and 2), and a single-stage single-suction impeller is adopted. The horizontal slurry pump comprises a shaft 1, a bearing assembly 2, a shaft sleeve 3, a packing gland 4, a packing box 5, an auxiliary impeller 6, a rear protective plate 7, a pump body 8, an outlet short pipe 9, a sheath 10, an impeller 11, a pump cover 12, a front protective plate 13 and an inlet short pipe 14; the vertical slurry pump comprises a lower filter screen 21, a pump body 22, an impeller 23, a rear guard plate 24, a rear guard plate sealing gasket 25, a bracket 26, a supporting plate 27, a bearing assembly 28, a shaft 29 and a discharge pipe 30. The single suction structure of the horizontal and vertical slurry pumps causes small flow, low efficiency, complex rotor replacement, difficult installation, large axial force and difficult balance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems by providing a single-stage double-suction horizontal slurry pump aiming at the defects of the prior art.
The technical problem solved by the utility model can be realized by adopting the following technical scheme:
horizontal sediment stuff pump of single-stage double suction, including the base, still include:
the outer shell comprises a lower outer shell and an upper outer shell which are connected in a half structure, the bottom of the lower outer shell is connected with the base, the upper outer shell is used as an outer pump cover, and two axial ends of the lower outer shell are respectively provided with a bearing body for the rotary connection of the rotating shaft;
the inner shell comprises a lower inner shell and an upper inner shell which are connected in a half structure, the bottom of the lower inner shell is fixed in the lower outer shell, the lower inner shell is used as an inner pump body, and two axial ends of the lower inner shell and the two axial ends of the upper inner shell are respectively provided with a rotating shaft sealing part;
the rotor component comprises a rotating shaft and an impeller, wherein two ends of the rotating shaft are respectively and rotatably connected to the bearing body, and the impeller is arranged in the middle of the rotating shaft and positioned in the inner shell;
the feeding end is connected with the inlet flange of the outer shell and the inlet end of the inner shell;
and the discharge end is connected with the outlet flange of the outer shell and the outlet end of the inner shell.
In a preferred embodiment of the present invention, the lower outer housing is provided with a positioning seam allowance inside corresponding to an outer contour of the lower inner housing.
In a preferred embodiment of the present invention, the lower outer casing comprises a first lower outer casing and a second lower outer casing which are symmetrically distributed at two axial ends of the impeller, and the first lower outer casing and the second lower outer casing are connected by bolts.
In a preferred embodiment of the utility model, the outer end of the sealing part of the rotating shaft is provided with an external flushing part.
In a preferred embodiment of the present invention, the shaft seal comprises a mechanical seal, and the external flushing component is used for flushing and cooling the inner cavity of the mechanical seal, so as to ensure that the inner cavity of the mechanical seal is filled with a cooling medium when the pump is started.
In a preferred embodiment of the present invention, the mechanical seal part includes a mechanical seal shaft sleeve sleeved on the rotating shaft, a mechanical seal sleeved on the mechanical seal shaft sleeve, and mechanical seal glands disposed at two axial ends of the lower inner housing and the upper inner housing, a gap between the mechanical seal shaft sleeve, the mechanical seal, the lower inner housing, the upper inner housing, and the mechanical seal gland forms an inner cavity of the mechanical seal part, a cooling medium channel communicated with the inner cavity of the mechanical seal part is disposed on the mechanical seal gland, and the external flushing component includes an inner joint connected with the cooling medium channel, a ball valve connected with the inner joint, and an external pipeline connected with the ball valve.
In a preferred embodiment of the present invention, an axial stop ring is disposed between the mechanical seal sleeve and the bearing body.
In a preferred embodiment of the present invention, a bearing body pressing ring is disposed on the bearing body, the bearing body pressing ring is of a semicircular structure, the bearing body pressing ring presses on the bearing body and is in radial limit connection with a bearing bracket on the lower outer casing, and the bearing body pressing ring is also in axial limit connection with the bearing body.
In a preferred embodiment of the utility model, the inner end surface of the bearing body is provided with a filler cap.
In a preferred embodiment of the present invention, the upper outer casing is provided with a lifting lug.
In a preferred embodiment of the present invention, the top of the upper inner shell is provided with an air bleeding component, and the upper outer shell is provided with a yielding hole for the air bleeding component to extend outwards.
Due to the adoption of the technical scheme, the utility model has the following advantages:
1. the axial force is low, and balance is not needed;
2. the rotor is convenient and accurate to make dynamic balance;
3. the flow velocity of an inlet of the impeller is reduced, and the cavitation performance is improved;
4. the double-suction design greatly increases the water discharge of the pump head, has large flow and wide application range, and can select a more suitable slurry pump model according to the client process;
5. the inner shell and the outer shell adopt a middle-open structure, so that the rotor component is convenient to disassemble, and the field maintenance is convenient;
6. the bearings are distributed on two sides of the outer shell, so that the design of a bearing box is omitted, and the structure of the slurry pump is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a horizontal slurry pump in the prior art.
Fig. 2 is a schematic structural diagram of a vertical slurry pump in the prior art.
Fig. 3 is a front view of one embodiment of the present invention.
Fig. 4 is a sectional view a-a of fig. 3.
Fig. 5 is a transverse cross-sectional view of fig. 3.
Fig. 6 is a schematic structural diagram of a connection between a base and a lower outer housing according to an embodiment of the utility model.
Fig. 7 is a schematic structural diagram of a bearing stack ring according to an embodiment of the present invention.
Fig. 8 is a top view of fig. 7.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below.
Referring to fig. 3 to 8, the single-stage double-suction horizontal slurry pump includes a base 100, an outer casing 200, an inner casing 300, a rotor part 400, a feeding end 500 and a discharging end 600.
The base 100 is formed by welding steel plates and is divided into a panel, a bottom plate and reinforcing ribs, wherein the panel is arranged on the top and is used for positioning and concentricity processing of the outer shell 200, the bottom plate is arranged on the bottom, and the reinforcing ribs are arranged in the middle.
The outer housing 200 comprises a lower outer housing 210 and an upper outer housing 220 connected in a half structure, and the bottom of the lower outer housing 210 is connected to the base 100. Specifically, the footing below the lower outer shell 210 is matched with the panel of the base 100, the screw tail taper pin and the bolt are used for positioning, the upper outer shell 220 is used as an outer pump cover, and the upper outer shell 220 is provided with two lifting lugs for lifting. The two axial ends of the lower outer housing 210 are respectively provided with a bearing body 700 for rotatably connecting the rotating shaft, and the bearing bodies 700 are fixed on the bearing brackets 230 at the two axial ends of the lower outer housing 210 by axial bolts 713. The bearing body 700 is provided with a bearing body pressing ring 710, the bearing body pressing ring 710 is of a semicircular structure, the bearing body pressing ring 710 vertically presses downwards on the bearing body 700 and is in radial limit connection with a bearing bracket 230 on the lower outer shell 210 through a radial bolt 711, and the bearing body pressing ring 710 is also in axial limit connection with the bearing body 700 through an axial bolt 712. The inner end face of the bearing body 700 is provided with an oil filling cover 720, so that lubricating oil can be conveniently added to the bearing body 700. The lower housing shell 210 and the upper housing shell 220 are connected by an end flange 240. To further facilitate assembly and machining, the lower outer housing 210 includes a first lower outer housing 211 and a second lower outer housing 212 symmetrically disposed at both axial ends of the impeller, and the first lower outer housing 211 and the second lower outer housing 212 are connected by bolts 213.
The inner housing 300 includes a lower inner housing 310 and an upper inner housing 320 connected in a half structure, the bottom of the lower inner housing 310 is fixed in the lower outer housing 210, and a positioning spigot corresponding to the outer contour of the lower inner housing 310 is provided inside the lower outer housing 210. The lower inner case 310 serves as an inner pump body, and both axial ends of the lower inner case 310 and the upper inner case 320 are provided with a shaft seal portion 800, respectively.
The top of the upper inner housing 320 is provided with an air discharging assembly 330, the upper outer housing 220 is provided with a yielding hole 331 for the air discharging assembly 330 to extend outwards, and the air discharging assembly 330 is a ball valve assembly and is used for discharging air in the pump before starting the pump.
The outer end of the sealing part 800 of the rotating shaft in this embodiment is provided with an external flushing part 900, the sealing part 800 of the rotating shaft comprises a mechanical sealing part, the external flushing part 900 is used for flushing and cooling the inner cavity of the mechanical sealing part, and the inner cavity of the mechanical sealing part is filled with cooling medium when the pump is started. Preferably, the mechanical seal portion includes a mechanical seal shaft sleeve 810 fitted over the rotating shaft 410, a mechanical seal fitted over the mechanical seal shaft sleeve 810, and mechanical seal glands 840 disposed at both axial ends of the lower inner housing 310 and the upper inner housing 320, and the mechanical seal includes a dynamic seal ring 820 disposed at a middle portion of the mechanical seal shaft sleeve 810 and static seal rings 830 disposed at both axial ends of the dynamic seal ring 820. The mechanical seal part inner cavity a is formed by gaps among the mechanical seal shaft sleeve 810, the mechanical seal, the lower inner shell 310, the upper inner shell 320 and the mechanical seal gland 840, and a cooling medium channel 841 communicated with the mechanical seal part inner cavity a is arranged on the mechanical seal gland 840. The inner walls of the lower and upper inner casings 310 and 320 are provided with a sealing ring 850 engaged with the impeller 420. The external flushing member 900 includes a nipple 910 connected to a cooling medium passage 841, a ball valve 920 connected to the nipple 910, and an external pipe connected to the ball valve. An axial limiting ring 850 is arranged between the mechanical seal shaft sleeve 810 and the bearing body 700 to prevent the mechanical seal shaft sleeve 810 from moving axially.
The rotor part 400 includes a rotating shaft 410 having two ends respectively rotatably connected to the bearing body 700 and an impeller 420 disposed in the middle of the rotating shaft 410 and located in the inner housing 300, wherein one end of the rotating shaft 410 passes through the bearing body 700 for connecting with a driving device.
The inlet end 500 is connected to an inlet flange of the outer housing 200 and an inlet end of the inner housing 300, and the outlet end 600 is connected to an outlet flange of the outer housing 200 and an outlet end of the inner housing 300. The feed end 500 in this embodiment is an inlet cone and the discharge end 600 is an outlet cone. The feed end 500 consists of a flange, a steel plate and a wear-resistant composite plate; the flange 510 made of steel plate is connected with the inlet flange of the outer shell 200 and the inlet end of the inner shell 300, the wear-resistant composite plate 520 is bent into a taper pipe, and the wear-resistant layer 530 is arranged on the inner side of the taper pipe. The discharge end 600 consists of a flange, a steel plate and a wear-resistant composite plate; the flange 610 made of steel plate is connected with the outlet flange of the outer shell 200 and the outlet end of the inner shell 300, the wear-resistant composite plate 620 is bent into a taper pipe, and the wear-resistant layer 630 is arranged on the inner side of the taper pipe.
When the rotor component 400 is installed, the rotor component 400 is installed according to the required flow and the required lift, the lower inner shell 310 of the inner shell 300 is installed in the lower outer shell 210 of the outer shell 200, the tail cone pin is positioned at the matching position, the bolts are pre-tightened and are hung on the base 100, the tail cone pin is positioned at the matching position and are screwed, the rotor component 400 installed before is hung and installed, the inner shell 320 is covered, the upper outer shell 220 is covered, the connecting bolts of the middle open surface and each end surface are screwed, the feeding end 500, the discharging end 600 and the external washing component 900 are installed finally, and the sealing surfaces of the flanges are all required to be provided with sealing gaskets.
When the present invention is used to replace the rotor component 400,
1. the unit is shut down, and the power supply of the unit is cut off;
2. closing the inlet and outlet valves of the unit, and ensuring no damage to the valves when the valves are closed;
3. closing a valve externally connected with a water pipe;
4. loosening the connecting bolts of the feeding end 500 and the discharging end 600, and discharging liquid in the pump head;
5. loosening the joint of the external water pipe and the external washing component 900 to completely separate the two, and loosening the connecting bolt between the mechanical sealing gland 840 and the inner shell 300;
6. loosening the connecting bolts of the lower outer housing 210 of the outer housing 200 and the bearing body 700;
7. loosening the connecting bolt between the lower outer shell 210 of the outer shell 200 and the bearing body pressing ring 710, and taking down the bearing body pressing ring 710;
8. pulling out the positioning pins on the split surfaces of the upper outer shell 220 and the lower outer shell 210 of the outer shell 200, and loosening the connecting bolts between the split surfaces of the upper outer shell 220 and the lower outer shell 210;
9. hoisting the upper outer shell 220 by a crane, and slightly inching in the hoisting process to move aside after the upper outer shell 220 and the lower outer shell 210 are completely separated;
10. hoisting the inner pump cover of the inner shell by using a crane, and slightly moving the inner pump cover to a side after the inner pump cover of the inner shell is completely separated from the inner pump body in the hoisting process;
11. hoisting the rotor part 400 by a crane, slightly inching in the hoisting process, moving aside after ensuring that the rotor part 400 is completely separated from the pump bodies and the motors of the inner shell and the outer shell, and replacing the prepared rotor part 400;
12. after the rotor part 400 is replaced, the rotor part is installed according to the disassembly sequence;
13. after the inspection is correct, a water replenishing pipeline valve is opened, water is filled into the pump head and the sealing cavity, and the single-stage double-suction horizontal slurry pump can be started after the inspection is carried out, wherein the phenomena of water leakage, water seepage and the like do not exist on each sealing surface.
When the present invention is to replace the inner case 300,
1. the disassembly sequence is the same as replacing the rotor component 400, and after the rotor component 400 is disassembled, the connecting bolts of the first lower outer shell 211 and the second lower outer shell 212 of the outer shell 200 are disassembled;
2. the first lower outer case 211 of the outer case 200 is removed from the coupling bolt of the base 100,
3. the first lower outer shell 211 is taken out by a crane, and is moved aside after the first lower outer shell 211 of the outer shell is completely separated from the inner pump body of the inner shell;
4. the lower inner housing 310 is lifted out by a crane, and the prepared lower inner housing 310 is replaced after the lower inner housing 310 and the second lower outer housing 212 of the outer housing 200 are completely separated;
5. after the lower inner housing 310 is replaced, the upper inner housing 320 is installed and replaced in the disassembly order;
6. after the inspection is correct, a water replenishing pipeline valve is opened, water is filled into the pump head and the sealing cavity, and the single-stage double-suction horizontal slurry pump can be started after the inspection is carried out, wherein the phenomena of water leakage, water seepage and the like do not exist on each sealing surface.
When the mechanical seal pump works, after the mechanical seal pump is in butt joint with a pipeline, the inlet valve is opened to enable the slurry pump to be filled with slurry to be pumped, the external flushing component 900 is opened to enable the inner cavity a of the mechanical seal part to be filled with water for flushing and cooling the mechanical seal, after the pump is started, the centrifugal force of the impeller is used for acting, the slurry at the inlet of the impeller is sucked in, and the slurry is thrown out through the outlet of the impeller.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (11)
1. Horizontal sediment stuff pump of single-stage double suction, including the base, its characterized in that still includes:
the outer shell comprises a lower outer shell and an upper outer shell which are connected in a half structure, the bottom of the lower outer shell is connected with the base, the upper outer shell is used as an outer pump cover, and two axial ends of the lower outer shell are respectively provided with a bearing body for the rotary connection of the rotating shaft;
the inner shell comprises a lower inner shell and an upper inner shell which are connected in a half structure, the bottom of the lower inner shell is fixed in the lower outer shell, the lower inner shell is used as an inner pump body, and two axial ends of the lower inner shell and the two axial ends of the upper inner shell are respectively provided with a rotating shaft sealing part;
the rotor component comprises a rotating shaft and an impeller, wherein two ends of the rotating shaft are respectively and rotatably connected to the bearing body, and the impeller is arranged in the middle of the rotating shaft and positioned in the inner shell;
the feeding end is connected with the inlet flange of the outer shell and the inlet end of the inner shell;
and the discharge end is connected with the outlet flange of the outer shell and the outlet end of the inner shell.
2. The single stage double suction horizontal slurry pump according to claim 1, wherein the lower outer housing is internally provided with a positioning spigot corresponding to an outer contour of the lower inner housing.
3. The single stage, double suction horizontal slurry pump of claim 1 wherein the lower outer housing comprises first and second lower outer housings symmetrically disposed at opposite axial ends of the impeller, the first and second lower outer housings being bolted together.
4. The single stage double suction horizontal slurry pump of claim 1 wherein the outer end of the shaft seal is provided with an external flushing member.
5. The single stage, double suction, horizontal slurry pump of claim 4 wherein the shaft seal comprises a mechanical seal and the external flushing component is used to flush and cool the inner cavity of the mechanical seal to ensure that the inner cavity of the mechanical seal is filled with a cooling medium when the pump is started.
6. The single-stage double-suction horizontal slurry pump according to claim 5, wherein the mechanical seal part comprises a mechanical seal shaft sleeve sleeved on the rotating shaft, a mechanical seal sleeved on the mechanical seal shaft sleeve, and mechanical seal glands arranged at two axial ends of the lower inner shell and the upper inner shell, the mechanical seal shaft sleeve, the mechanical seal, the lower inner shell, the upper inner shell and the mechanical seal glands form an inner cavity of the mechanical seal part through gaps, a cooling medium channel communicated with the inner cavity of the mechanical seal part is arranged on the mechanical seal gland, and the external flushing component comprises an inner joint connected with the cooling medium channel, a ball valve connected with the inner joint and an external pipeline connected with the ball valve.
7. The single-stage double-suction horizontal slurry pump according to claim 6, wherein an axial limit ring is arranged between the machine seal shaft sleeve and the bearing body.
8. The single-stage double-suction horizontal slurry pump according to claim 1, wherein the bearing body is provided with a bearing body pressing ring, the bearing body pressing ring is of a semicircular structure, the bearing body pressing ring is pressed on the bearing body and is in radial limit connection with a bearing bracket on the lower outer shell, and the bearing body pressing ring is in axial limit connection with the bearing body.
9. The single stage, double suction horizontal slurry pump of claim 1 wherein the bearing body is provided with a filler cap on an inner end surface.
10. The single stage, double suction horizontal slurry pump of claim 1 wherein a lifting lug is provided on the upper outer housing.
11. The single-stage double-suction horizontal slurry pump according to claim 1, wherein an air bleed assembly is arranged at the top of the upper inner shell, and a abdicating hole for the air bleed assembly to extend outwards is arranged on the upper outer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122452205.1U CN215908063U (en) | 2021-10-12 | 2021-10-12 | Single-stage double-suction horizontal slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122452205.1U CN215908063U (en) | 2021-10-12 | 2021-10-12 | Single-stage double-suction horizontal slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215908063U true CN215908063U (en) | 2022-02-25 |
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ID=80312093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122452205.1U Active CN215908063U (en) | 2021-10-12 | 2021-10-12 | Single-stage double-suction horizontal slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215908063U (en) |
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2021
- 2021-10-12 CN CN202122452205.1U patent/CN215908063U/en active Active
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