CN221003158U - Single-stage single-suction centrifugal pump - Google Patents

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to a single-stage single-suction centrifugal pump which comprises a motor, wherein the output end of the motor is fixedly connected with a pump shaft, one end, far away from the motor, of the pump shaft is fixedly connected with an impeller, and a clamping groove and a thread groove are formed in the impeller. The quantity of draw-in grooves has been seted up a plurality of, and the inside joint of a plurality of draw-in grooves has the blade, and the inside threaded connection of screw thread groove has the screw thread post, and the inside wall of screw thread post is laminated mutually with the side surface of blade, and the blade is annular distribution with the pump shaft as the center, and the surface rotation of pump shaft is connected with the sealing ring, and the surface fixedly connected with pump case of sealing ring. According to the utility model, the clamping grooves, the blades, the thread grooves and the thread columns are arranged, so that convenience in blade replacement is improved, and the sealing performance of the sealing ring reinforcing device is matched by arranging the rotating ring and the fixing ring, so that leakage of water flow is avoided.

Description

Single-stage single-suction centrifugal pump

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a single-stage single-suction centrifugal pump.

Background

The centrifugal pump is a pump for conveying liquid by the centrifugal force generated when the impeller rotates, can be widely applied to the industries of electric power, metallurgy, coal, building materials and the like for conveying slurry containing solid particles, and before the water pump is started, the pump shell and the water suction pipe are required to be filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation, the water performs centrifugal motion and is thrown to the outer edge of the impeller, and flows into a water pressing pipeline of the water pump through the volute pump shell.

The existing single-stage single-suction centrifugal pump is characterized in that the impeller and water do high-speed rotation when in use, so that the blades are easy to damage after long-term use, and the blades are fixed with the impeller, so that the single blades are inconvenient to replace, the whole impeller is replaced, the resource waste is caused, and the use cost is increased, so that the single-stage single-suction centrifugal pump is needed.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides a single-stage single-suction centrifugal pump.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a single-stage single-suction centrifugal pump, includes the motor, the output fixedly connected with pump shaft of motor, the one end fixedly connected with impeller that the motor was kept away from to the pump shaft, draw-in groove and thread groove have been seted up to the inside of impeller. The quantity of draw-in grooves has been seted up a plurality of, and the inside joint of a plurality of draw-in grooves has the blade, and the inside threaded connection of screw thread groove has the screw thread post, and the inside wall of screw thread post is laminated mutually with the side surface of blade, and the blade is annular distribution with the pump shaft as the center, and the surface rotation of pump shaft is connected with the sealing ring, and the surface fixedly connected with pump case of sealing ring.

Further: the side surface of the pump shell is fixedly connected with a water inlet pipe, the top of the pump shell is fixedly connected with a water outlet pipe, and the water outlet pipe is positioned above the water inlet pipe.

Further: the side surface of the pump shell is provided with a rotating groove, the inside of the rotating groove is rotationally connected with a rotating ring, one end of the rotating ring, which is far away from the pump shell, is fixedly connected with a fixing ring, and the fixing ring is fixedly connected with the circumferential surface of the pump shaft.

Further: the bottom fixedly connected with first brace table of motor, the bottom fixedly connected with base of first brace table.

Further: the top fixedly connected with second brace table of base, second brace table is laminated with the bottom of pump case.

Further: the fixed ring is positioned between the motor and the pump shell, and the sealing ring is positioned on the inner side wall of the pump shell.

The utility model has the following beneficial effects:

Compared with the prior art, through setting up draw-in groove, blade, thread groove and screw thread post, when changing single blade, take out the screw thread post from the thread inslot, then insert the draw-in groove with new blade after taking out damaged blade, utilize the screw thread post to be connected with the thread groove at last for the screw thread post laminates the blade, thereby realizes the fixed to the blade, is favorable to promoting the convenience that the blade was changed.

Compared with the prior art, through setting up swivel becket and solid fixed ring, utilize the motor to drive the pump shaft and rotate for the pump shaft drives solid fixed ring and rotates, makes the swivel becket rotate in the inside of rotating the groove, is favorable to cooperating sealing ring reinforcing means's leakproofness, avoids the rivers to spill.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a first view of an internal structure according to the present utility model;

FIG. 3 is an enlarged view of FIG. 2A in accordance with the present utility model;

FIG. 4 is a schematic view of a second view of the internal structure of the present utility model;

fig. 5 is an enlarged view of fig. 4 at B in accordance with the present utility model.

Legend description:

1. A base; 2. a first support table; 3. a second support table; 4. a motor; 5. a pump shaft; 6. a pump housing; 7. a rotating groove; 8. a rotating ring; 9. a fixing ring; 10. a seal ring; 11. a clamping groove; 12. a blade; 13. a thread groove; 14. a threaded column; 15. a water inlet pipe; 16. a water outlet pipe; 17. an impeller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a single stage single suction centrifugal pump: including motor 4, the output fixedly connected with pump shaft 5 of motor 4, the one end fixedly connected with impeller 17 that the motor 4 was kept away from to pump shaft 5, draw-in groove 11 and thread groove 13 have been seted up to the inside of impeller 17. The number of the clamping grooves 11 is multiple, the blades 12 are clamped in the clamping grooves 11, damaged blades 12 are required to be taken out during installation and disassembly, and new blades 12 are required to be installed. The inside threaded connection of screw thread groove 13 has screw thread post 14, and the inside wall of screw thread post 14 is laminated with the side surface of blade 12 mutually, and blade 12 takes pump shaft 5 as the center to be the cyclic annular distribution, and the surface rotation of pump shaft 5 is connected with sealing ring 10, and sealing ring 10's surface fixedly connected with pump case 6 utilizes pump shaft 5 to drive impeller 17 and rotates to drive blade 12 and rotate in the inside of pump case 6. When single blade 12 damages and needs maintenance and replacement, take out screw thread post 14 from screw thread groove 13, then take out the blade 12 of damaging again with new blade 12 insert draw-in groove 11, utilize screw thread post 14 to be connected with screw thread groove 13 at last for screw thread post 14 laminates blade 12, thereby realizes fixing blade 12, is favorable to promoting blade 12 and changes the convenience.

The side surface of the pump shell 6 is fixedly connected with a water inlet pipe 15, the top of the pump shell 6 is fixedly connected with a water outlet pipe 16, and the water outlet pipe 16 is positioned above the water inlet pipe 15. The water flow enters the pump shell 6 from the water inlet pipe 15, and the blades 12 are driven by the rotation of the pump shaft 5 to discharge the water flow from the water outlet pipe 16.

The side surface of the pump shell 6 is provided with a rotating groove 7, a rotating ring 8 is connected in the rotating groove 7 in a rotating way, one end, far away from the pump shell 6, of the rotating ring 8 is fixedly connected with a fixing ring 9, and the fixing ring 9 is fixedly connected with the circumferential surface of the pump shaft 5. The motor 4 is utilized to drive the pump shaft 5 to rotate, the pump shaft 5 drives the fixed ring 9 to rotate, so that the rotating ring 8 rotates in the rotating groove 7, the sealing performance of the device is enhanced by matching with the sealing ring 10, and water leakage is avoided.

The bottom fixedly connected with first brace table 2 of motor 4, the bottom fixedly connected with base 1 of first brace table 2. The motor 4 is supported by the first support table 2.

The top of the base 1 is fixedly connected with a second supporting table 3, and the second supporting table 3 is attached to the bottom of the pump shell 6. The pump housing 6 is supported by the second support table 3, which is beneficial to enhancing the stability of the device in use.

A stationary ring 9 is located between the motor 4 and the pump housing 6 and a sealing ring 10 is located on the inside wall of the pump housing 6.

Working principle:

When changing single blade 12, take out screw thread post 14 from screw thread groove 13 in, then take out the blade 12 of damaging again with new blade 12 insert draw-in groove 11, utilize screw thread post 14 to be connected with screw thread groove 13 at last for screw thread post 14 laminates blade 12, thereby realizes fixing blade 12, is favorable to promoting the convenience that blade 12 changed. The motor 4 is utilized to drive the pump shaft 5 to rotate, and the pump shaft 5 drives the fixed ring 9 to rotate, so that the rotating ring 8 rotates in the rotating groove 7, the sealing performance of the device is enhanced by matching with the sealing ring 10, and water leakage is avoided.

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 foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. A single-stage, single-suction centrifugal pump comprising a motor (4), characterized in that: the output fixedly connected with pump shaft (5) of motor (4), the one end fixedly connected with impeller (17) of motor (4) are kept away from to pump shaft (5), draw-in groove (11) and thread groove (13) have been seted up to the inside of impeller (17), a plurality of have been seted up to the quantity of draw-in groove (11) inside joint has blade (12), the inside threaded connection of thread groove (13) has screw thread post (14), the inside wall of screw thread post (14) is laminated with the side surface of blade (12), blade (12) are annular distribution with pump shaft (5) as the center, the surface rotation of pump shaft (5) is connected with sealing ring (10), the surface fixedly connected with pump case (6) of sealing ring (10).

2. A single stage, single suction centrifugal pump according to claim 1, wherein: the side surface of the pump shell (6) is fixedly connected with a water inlet pipe (15), the top of the pump shell (6) is fixedly connected with a water outlet pipe (16), and the water outlet pipe (16) is positioned above the water inlet pipe (15).

3. A single stage, single suction centrifugal pump according to claim 1, wherein: the pump is characterized in that a rotating groove (7) is formed in the side surface of the pump shell (6), a rotating ring (8) is connected to the inside of the rotating groove (7) in a rotating mode, a fixing ring (9) is fixedly connected to one end, away from the pump shell (6), of the rotating ring (8), and the fixing ring (9) is fixedly connected with the circumferential surface of the pump shaft (5).

4. A single stage, single suction centrifugal pump according to claim 1, wherein: the bottom of motor (4) fixedly connected with first brace table (2), the bottom fixedly connected with base (1) of first brace table (2).

5. A single stage, single suction centrifugal pump according to claim 4, wherein: the top of base (1) fixedly connected with second brace table (3), second brace table (3) are laminated with the bottom of pump case (6).

6. A single stage, single suction centrifugal pump according to claim 3, wherein: the fixed ring (9) is positioned between the motor (4) and the pump shell (6), and the sealing ring (10) is positioned on the inner side wall of the pump shell (6).