CN211174638U - Centrifugal pump with easily replaced filter screen - Google Patents

Abstract

A centrifugal pump with an easily replaced filter screen belongs to the technical field of delivery pumps. The centrifugal pump with the easily replaced filter screen comprises a motor and a pump body, wherein an impeller is arranged in the pump body, the impeller is connected with the motor through a pump shaft, a vertical liquid outlet is arranged at the top of the pump body, a liquid outlet flange is fixed at the liquid outlet end far away from the pump body end, a horizontal liquid inlet is arranged at the pump body end far away from the motor, a liquid inlet flange is fixed at the liquid inlet end far away from the motor end, it is characterized in that a horizontal liquid inlet pipe is fixedly connected between the liquid inlet flange and the liquid inlet, the inner wall of the liquid inlet pipe is provided with a circular filter screen fixing groove, a filter screen is detachably arranged in the filter screen fixing groove, the top of the liquid inlet pipe is provided with a filter screen dismounting hole which is positioned at the filter screen fixing groove, filter screen fixed plate, filter screen fixed plate and feed liquor pipe outer wall bolted connection, inboard and filter screen top edge coincidence are installed to filter screen dismouting hole department demountable installation.

Description

Centrifugal pump with easily replaced filter screen

Technical Field

The utility model belongs to the technical field of the delivery pump, especially, relate to an easily change centrifugal pump of filter screen.

Background

The centrifugal pump is a pump which utilizes centrifugal force generated when an impeller rotates to convey liquid, when the centrifugal pump works, the impeller and the conveying liquid are driven by a pump shaft to rotate at high speed, the liquid is thrown to the outer edge of the impeller and enters a conveying pipeline through a flow channel of a volute pump shell and a liquid outlet. However, according to different practical use environments, impurities or foreign matters are often doped in the transported liquid, and if the foreign matters enter the pump body along with the liquid and are accumulated in the pump body, the pump body is damaged, the failure probability of the pump is increased, and meanwhile, the service life of the pump is also reduced. Therefore, in most cases, a filter screen is additionally arranged at a flange of a liquid inlet of the pump body to prevent foreign matters from entering when the pump body is installed; however, the filter screen is more complicated to replace, and the flange needs to be detached every time the filter screen is replaced, so that the filter screen is very inconvenient.

Disclosure of Invention

To the problem that prior art exists, the utility model provides an easily change centrifugal pump of filter screen.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a centrifugal pump with easily replaceable filter screen comprises a motor and a pump body, wherein an impeller is arranged in the pump body, the impeller is connected with the motor through a pump shaft, a vertical liquid outlet is arranged at the top of the pump body, a liquid outlet flange is fixed at the end of the liquid outlet far away from the pump body, a horizontal liquid inlet is arranged at the end of the pump body far away from the motor, a liquid inlet flange is fixed on the end of the liquid inlet far away from the motor, a horizontal liquid inlet pipe is fixedly connected between the liquid inlet flange and the liquid inlet, the inner wall of the liquid inlet pipe is provided with a circular filter screen fixing groove, a filter screen is detachably arranged in the filter screen fixing groove, the top of the liquid inlet pipe is provided with a filter screen dismounting hole which is positioned at the filter screen fixing groove, filter screen fixed plate, filter screen fixed plate and feed liquor pipe outer wall bolted connection, inboard and filter screen top edge coincidence are installed to filter screen dismouting hole department demountable installation.

And a sealing gasket is arranged between the filter screen fixing plate and the outer wall of the liquid inlet pipe.

The filter screen includes cylindric outer support, both bottoms surfaces of outer support all are provided with the filter screen.

And filter screens with different mesh sizes are respectively adopted on the two bottom surfaces of the outer support.

The filter screen with larger mesh size is arranged on the side far away from the motor.

The utility model has the advantages that:

the utility model provides an easily change centrifugal pump of filter screen, this centrifugal pump only need unpack the filter screen fixed plate apart when clearance or change the filter screen, can take out the clearance with the filter screen or change, and is easy and simple to handle, all need dismantle flange's loaded down with trivial details operation when having avoided changing the filter screen among the prior art at every turn.

Drawings

FIG. 1 is a schematic structural view of a centrifugal pump with an easily replaceable filter screen according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 (the filter screen not shown);

fig. 3 is a schematic view of the filter screen of the present invention;

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

in the figure: 1-motor, 2-pump body, 3-liquid outlet, 4-liquid outlet flange, 5-liquid inlet, 6-liquid inlet flange, 7-liquid inlet pipe, 8-filter screen fixing groove, 9-filter screen, 10-filter screen dismounting hole, 11-filter screen fixing plate, 12-sealing pad, 13-outer support.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in figures 1-4, a centrifugal pump with an easily replaced filter screen belongs to the technical field of delivery pumps, and can facilitate the disassembly, cleaning or replacement of the filter screen of the centrifugal pump, thereby improving the working efficiency.

The utility model discloses an easily change centrifugal pump of filter screen, including the motor 1 with the pump body 2, be equipped with the impeller in the pump body 2, the impeller is connected with motor 1 through the pump shaft, 2 tops of the pump body are equipped with vertical liquid outlet 3, liquid outlet 3 keeps away from that 2 ends of the pump body are fixed with liquid outlet flange 4, the pump body 2 is kept away from motor 1 end and is equipped with horizontally inlet 5, inlet 5 keeps away from motor 1 end and is fixed with inlet flange 6. Fixed connection has horizontally feed liquor pipe 7 between inlet flange 6 and the inlet 5, and the annular filter screen fixed slot 8 of circle has been seted up to 7 inner walls of feed liquor pipe, can dismantle in the filter screen fixed slot 8 and be provided with filter screen 9, and filter screen fixed slot 8 is used for the fixed filter screen 9 of placing, prevents that filter screen 9 from shifting. Filter screen dismouting hole 10 has been seted up at 7 tops of feed liquor pipe, and filter screen dismouting hole 10 is located filter screen fixed slot 8 department, and filter screen dismouting hole 10 size slightly is greater than the diameter of circular filter screen 9, can make things convenient for the installation and take out of filter screen 9. A filter screen fixing plate 11 is detachably mounted at the position of the filter screen assembling and disassembling hole 10, the filter screen fixing plate 11 is in bolt connection with the outer wall of the liquid inlet pipe 7, and the filter screen assembling and disassembling hole 10 can be plugged to prevent liquid from flowing out during working; inboard and the coincidence of filter screen 9 top edge, the fixed action to filter screen 9 that can better plays prevents that filter screen 9 from reciprocating, plays better filter effect.

Be provided with sealed 12 of filling up between filter screen fixed plate 11 and the feed liquor pipe 7 outer wall, sealed 12 realization filter screen fixed plate that can be better of filling up is sealed between 7 with the feed liquor pipe, prevents the liquid seepage in the course of the work.

The filter screen 9 includes cylindric outer support 13, and both bottoms of outer support 13 all are provided with the filter screen, and the multilayer filtration can be realized to cylindric filter screen, realizes better filter effect.

The two bottom surfaces of the outer bracket 13 are respectively provided with the filter screens 9 with different mesh sizes, so that the grading filtration can be realized, and a better filtration effect can be achieved.

The filter screen that mesh size is great is installed in keeping away from motor 1 side, blocks the large-size foreign matter in advance, and the filter screen of the little specification foreign matter rethread mesh of passing through is filtered, only needs reverse water clearance during the clearance can.

The following describes the usage of the present invention with reference to the drawings.

A filter screen cleaning/replacing step:

the method comprises the following steps: removing the connecting bolts of the filter screen fixing plate 11;

step two: disassembling the filter screen fixing plate 11;

step three: taking out the filter screen 9 from the filter screen fixing groove 8;

step four: cleaning the filter screen 9 or replacing a new filter screen, and washing the filter screen from the small-mesh filter screen side to the other side by using water when cleaning the filter screen;

step five: placing the cleaned filter screen 9 or a new filter screen into the filter screen fixing groove 8, and mounting the filter screen with larger mesh size on the side far away from the motor 1;

step six: the filter screen fixing plate 11 is covered and the connecting bolt is fastened.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (5)

1. A centrifugal pump with an easily replaced filter screen comprises a motor and a pump body, wherein an impeller is arranged in the pump body, the impeller is connected with the motor through a pump shaft, a vertical liquid outlet is arranged at the top of the pump body, a liquid outlet flange is fixed at the position, away from the pump body, of the liquid outlet, a horizontal liquid inlet is arranged at the position, away from the motor end, of the pump body, a liquid inlet flange is fixed at the position of the liquid inlet, away from the motor end, a horizontal liquid inlet pipe is fixedly connected between the liquid inlet flange and the liquid inlet, a circular ring-shaped filter screen fixing groove is formed in the inner wall of the liquid inlet pipe, a filter screen is detachably arranged in the filter screen fixing groove, a filter screen assembling and disassembling hole is formed in the top of the liquid inlet pipe, the inner side coincides with the upper edge of the filter screen.

2. The centrifugal pump of claim 1, wherein: and a sealing gasket is arranged between the filter screen fixing plate and the outer wall of the liquid inlet pipe.

3. The centrifugal pump of claim 1, wherein: the filter screen includes cylindric outer support, both bottoms surfaces of outer support all are provided with the filter screen.

4. A centrifugal pump with an easily replaceable filter screen according to claim 3, wherein: and filter screens with different mesh sizes are respectively adopted on the two bottom surfaces of the outer support.

5. The centrifugal pump of claim 4, wherein: the filter screen with larger mesh size is arranged on the side far away from the motor.

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