CN220365781U - Filtration structure of end suction centrifugal pump - Google Patents

Abstract

The application relates to a filtering structure of an end suction centrifugal pump, and relates to the technical field of end suction centrifugal pumps, which comprises a motor, wherein a pump body is arranged on the motor, a pump cover is covered on the pump body, and an impeller is rotatably arranged between the pump body and the pump cover; the pump body is provided with a liquid outlet pipe, the pump cover is provided with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is provided with a filter assembly, and the filter assembly filters liquid flowing through the first liquid inlet pipe; and the second liquid inlet pipe is detachably provided with a plugging assembly, and the plugging assembly plugs the second liquid inlet pipe. This application can reduce the grit that the aquatic mixes, when the water when impeller, reduces the harm that the grit caused to impeller, and then promotes centrifugal pump's work efficiency.

Description

Filtration structure of end suction centrifugal pump

Technical Field

The application relates to the technical field of end suction centrifugal pumps, in particular to a filtering structure of an end suction centrifugal pump.

Background

Currently, an end suction centrifugal pump is a common centrifugal pump type and is widely used in the fields of industry, agriculture, construction, municipal administration and the like. The design features that the suction inlet and the outlet of the pump are located at the same end of the pump, i.e. the end cover of the pump, so that the end suction centrifugal pump is obtained.

When the end suction centrifugal pump is used, the motor is started, the motor drives the pump shaft and the impeller to do high-speed rotation, water is thrown to the outer edge of the impeller in centrifugal motion, and then water flows out from the water outlet of the end suction centrifugal pump.

In the prior art, referring to fig. 5, a centrifugal pump is disclosed, which comprises a base 100, a centrifugal pump 200, a rotary wheel 300 and an electric machine 400, wherein the centrifugal pump 200 and the electric machine 400 are arranged on the base 100, the rotary wheel 300 is arranged in the centrifugal pump 200 and is connected with one end of a main shaft of the electric machine 400, the rotary wheel 300 comprises a lower cover plate 301, an upper cover plate 302 and a plurality of blades 303 arranged between the lower cover plate 301 and the upper cover plate 302, a water pumping port 3011 is formed on the lower cover plate 301, and a water outlet 3021 is formed on the upper cover plate 302.

When in use, the external pipeline is respectively connected with the water pumping port 3011 and the water outlet 3021, and then the electric motor 400 drives the rotary wheel 300 to rotate, and the liquid is continuously pushed from the water pumping port 3011 to the water outlet 3021 through the rotation of the rotary wheel 300.

With respect to the related art, the inventor considers that a small amount of sand is easily mixed in water, and when water passes through the impeller, the sand is easily damaged to the impeller, thereby affecting the working efficiency of the centrifugal pump.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the utility model provides a filter structure of centrifugal pump is inhaled to end, it has solved the grit that mixes in the water and has caused the damage to the impeller easily, and then influences the technical problem of centrifugal pump work efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the filtering structure of the end suction centrifugal pump comprises a motor, wherein a pump body is arranged on the motor, a pump cover is covered on the pump body, and an impeller is rotatably arranged between the pump body and the pump cover; the pump body is provided with a liquid outlet pipe, the pump cover is provided with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is provided with a filter assembly, and the filter assembly filters liquid flowing through the first liquid inlet pipe; and the second liquid inlet pipe is detachably provided with a plugging assembly, and the plugging assembly plugs the second liquid inlet pipe.

Through above-mentioned technical scheme, connect external pipeline on drain pipe and first feed liquor pipe, then carry out the shutoff to the second feed liquor pipe through the shutoff subassembly, during the use, the motor drives the impeller and rotates, impeller pivoted in-process, water gets into from first feed liquor pipe, then flow from the drain pipe under the effect of impeller, water filters water when passing through first feed liquor pipe, thereby reduce the grit that mixes in the aquatic, when water passes through the impeller, reduce the harm that the grit caused the impeller, and then promote centrifugal pump's work efficiency.

Further, the filter component comprises a filter pipe, the filter pipe is connected to the first liquid inlet pipe, a mounting groove is formed in the filter pipe, a filter screen is arranged on the mounting groove of the filter pipe, a bonding plate is formed on the filter screen, and the bonding plate is arranged on the mounting groove of the filter pipe in a building mode.

Through the technical scheme, the access plate on the filter screen is erected on the mounting groove of the filter pipe, so that the stability of the filter screen in the filter pipe is improved, and the filter screen is prevented from being driven by water flow to flow into the pump body to collide with the impeller.

Further, the filter screen is provided with filter holes, the filter holes are arranged on the filter screen at intervals, and the filter screen and the inner wall of the filter tube are arranged at intervals.

Through above-mentioned technical scheme, the filtration pore on the filter screen filters water, because the filter screen is the interval setting with the inner wall of filter tube for the filter screen can not influence the normal flow of water.

Further, a filter element is arranged on the inner side of the filter screen, a filter channel is arranged on the filter element, and the filter channel is communicated with the filter hole.

Through above-mentioned technical scheme, because filtering path and filtration pore intercommunication, consequently filter water by the filter core, can promote the filter effect of water greatly.

Further, a flow guide pipe is arranged on the filter pipe, the flow guide pipe is connected to the side wall of the filter pipe, and two ends of the flow guide pipe correspond to two ends of the filter pipe respectively.

Through above-mentioned technical scheme, the honeycomb duct carries out the water conservancy diversion to flowing through first feed liquor pipe, and then prevents that the clearance between filter screen and the filter tube from blockking up and influencing centrifugal pump's normal work.

Further, the shutoff subassembly includes the apron, be provided with the connecting rod on the apron, the through-hole has been seted up on the second feed liquor pipe, the one end of connecting rod passes the through-hole, just the connecting rod passes the one end of through-hole is provided with the nut, the nut with connecting rod threaded connection.

Through above-mentioned technical scheme, take down the nut from the connecting rod, then take down the apron from the second feed liquor pipe, later connect external pipeline on the first feed liquor pipe on the second feed liquor pipe, carry out the shutoff to the first feed liquor pipe through the apron afterwards.

Further, the second liquid inlet pipe is close to one end of the cover plate and is provided with a filter plate, and the end face of the filter plate is flush with the end face of the second liquid inlet pipe.

Through above-mentioned technical scheme, the filter filters the water that flows through the second feed liquor pipe for.

In summary, the present application includes the following beneficial technical effects of the filtering structure of at least one end suction centrifugal pump:

1. the external pipeline is connected to the liquid outlet pipe and the first liquid inlet pipe, and then the second liquid inlet pipe is plugged through the plugging component;

2. through the arrangement of the filter screen and the filter element, the effect of the filter pipe on water is improved, the gravel mixed in the water flowing into the pump body is reduced, and the service life of the impeller is prolonged;

3. through the setting of honeycomb duct and second feed liquor pipe, can promote centrifugal pump to the suction effect of water.

Drawings

Fig. 1 is a schematic diagram of the whole filtering structure of the end suction centrifugal pump according to the present embodiment;

FIG. 2 is an exploded view showing the main body structure of the present embodiment;

FIG. 3 is an exploded schematic view of the structure of the filter tube according to the present embodiment;

FIG. 4 is an exploded view of the second inlet tube according to the present embodiment;

fig. 5 is a schematic diagram of a prior art centrifugal pump.

Reference numerals: 1. a motor; 2. a pump body; 21. an impeller; 22. a liquid outlet pipe; 3. a pump cover; 4. a first liquid inlet pipe; 5. a second liquid inlet pipe; 51. a through hole; 52. a filter plate; 6. a filter assembly; 61. a filter tube; 62. a mounting groove; 63. a filter screen; 631. a butt strap; 632. a support surface; 633. filtering holes; 64. a filter element; 641. a filtration channel; 65. a flow guiding pipe; 7. a plugging assembly; 71. a cover plate; 72. a connecting rod; 73. a nut; 74. a rubber pad;

100. a base; 200. a centrifugal pump; 300. a rotating wheel; 301. a lower cover plate; 3011. a water pumping port; 302. an upper cover plate; 3021. a water outlet; 303. a blade; 400. and an electric machine.

Detailed Description

The utility model will be further described with reference to the following embodiments in order to make the technical means, the creation features, the achievement of the objects and the effects of the utility model easy to understand.

In the description of the present utility model, it should be understood that the terms "transverse", "longitudinal", "end", "edge", "side wall", "upper", "lower", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "end", "head", "tail", etc. refer to the orientation or positional relationship based on the drawings, are merely for convenience of describing the technical solution of the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a filtration structure of an end suction centrifugal pump.

Referring to fig. 1, a filtering structure of an end suction centrifugal pump comprises a motor 1, wherein a pump body 2 is installed on the motor 1, a pump cover 3 is covered on the pump body 2, an impeller 21 is rotatably installed between the pump body 2 and the pump cover 3, and the impeller 21 is connected with an output shaft of the motor 1. In use, the motor 1 drives the impeller 21 to rotate within the pump body 2.

The pump body 2 is provided with a liquid outlet pipe 22, the pump cover 3 is provided with a first liquid inlet pipe 4 and a second liquid inlet pipe 5, the first liquid inlet pipe 4 is provided with a filter assembly 6, and the second liquid inlet pipe 5 is provided with a plugging assembly 7. When the water pump is used, the blocking assembly 7 is used for blocking the second liquid inlet pipe 5, an external pipeline is respectively connected with the liquid outlet pipe 22 and the first liquid inlet pipe 4, along with the rotation of the motor 1, water flows in from the first liquid inlet pipe 4 under the action of the impeller 21, when water passes through the first liquid inlet pipe 4, the filtering assembly 6 is used for filtering the water, and after the water enters the pump body 2, the water flows out from the liquid outlet pipe 22 on the pump body 2 under the rotation of the impeller 21.

The motor 1 is installed on the pump body 2, and in the one end of motor 1 output shaft stretched into the pump body 2, impeller 21 is connected with the one end of driving motor 1 output shaft, and during the use, motor 1 drives impeller 21 through the output shaft and rotates in the pump body 2.

One end of the liquid outlet pipe 22 is connected with the side wall of the pump body 2, and the other end extends to the upper side in the vertical direction, and the liquid outlet pipe 22 is arranged on the side wall of the pump body 2, so that water can flow out from the liquid outlet pipe 22 well when the water is driven by the impeller 21 to do centrifugal motion.

The first liquid inlet pipe 4 and the second liquid inlet pipe 5 are arranged on the pump cover 3 at intervals, and the first liquid inlet pipe 4 and the second liquid inlet pipe 5 are communicated with the pump body 2.

The filter assembly 6 comprises a filter tube 61, in use, one end of the filter tube 61 is connected with the first liquid inlet tube 4 by a bolt, and one end of the external pipeline is connected with one end of the filter tube 61 far away from the first liquid inlet tube 4, so that water firstly flows through the filter tube 61 when entering the pump body 2.

Further, the filter tube 61 is provided with an installation groove 62, and the installation groove 62 is annular as a whole. The filter tube 61 is provided with a filter 63, the filter 63 is cylindrical as a whole, and a butt 631 is formed on the filter 63. The entire attachment plate 631 is annular, and when the filter screen 63 is fitted in the filter tube 61, the attachment plate 631 on the filter screen 63 is attached to the mounting groove 62 of the filter tube 61.

The support surface 632 is formed on one side of the access plate 631 facing away from the filter screen 63, when the external pipeline is connected to the filter pipe 61, the support surface 632 on the access plate 631 is in contact with the external pipeline, so that the stability of the filter screen 63 on the filter pipe 61 is improved, and when the external pipeline is taken down, the filter screen 63 can be easily taken down from the filter pipe 61.

The filter holes 633 are formed in the side wall of the filter screen 63, a plurality of filter holes 633 are uniformly formed in the filter screen 63 at intervals, water is filtered through the filter holes 633, the filtering efficiency of the water is improved, further, the outer side wall of the cylindrical filter screen 63 and the inner side wall of the filter tube 61 are arranged at intervals, and therefore the filter screen 63 can not influence the normal flow of the water when filtering the water.

Further, in order to improve the filtering effect of water, a filter element 64 is disposed in the cylindrical filter 63, the filter element 64 is formed with a plurality of filter channels 641, the filter channels 641 are uniformly spaced, and the plurality of filter channels 641 are all communicated with the filter holes 633 on the outer filter 63, and after a certain period of use, the filter element 64 is only required to be replaced.

After a period of use, the gravel in water blocks up the filtration pore 633 on the filter screen 63 easily, and then lead to the clearance between filter screen 63 and the filter tube 61 to take place to block up, in order to make behind water can pass through filter tube 61, consequently, be provided with honeycomb duct 65 on the filter tube 61, honeycomb duct 65 winds the axis of filter tube 61 evenly spaced and is provided with a plurality of, and the both ends of a plurality of honeycomb duct 65 are connected with the lateral wall at filter tube 61 axis direction both ends respectively, simultaneously, a plurality of honeycomb duct 65 all communicates with honeycomb duct 65 inside wall, during the use, honeycomb duct 65 can accelerate the flow of water, even when taking place to block up between filter screen 63 and the filter tube 61, water also can flow to first feed liquor pipe 4 through honeycomb duct 65.

The through holes 51 are formed in the second liquid inlet pipe 5, the through holes 51 are evenly spaced on the second liquid inlet pipe 5 and are provided with a plurality of plugging components 7, each plugging component comprises a cover plate 71, each cover plate 71 covers one end of the corresponding second liquid inlet pipe 5, each cover plate 71 is provided with a connecting rod 72, each connecting rod 72 corresponds to the corresponding through hole 51, one end of each connecting rod 72 is connected with each cover plate 71, the other end of each connecting rod 72 penetrates through the corresponding through hole 51, each connecting rod 72 penetrates through one end of each through hole 51 and is provided with a nut 73, each nut 73 is in threaded connection with the corresponding connecting rod 72, one end of each nut 73 abuts against the corresponding second liquid inlet pipe 5, and each cover plate 71 is connected to the corresponding second liquid inlet pipe 5 through each nut 73.

Further, a rubber gasket 74 is arranged between the cover plate 71 and the second liquid inlet pipe 5, the rubber gasket 74 is connected to the cover plate 71, when the cover plate 71 covers the second liquid inlet pipe 5, the rubber gasket 74 abuts against the space between the cover plate 71 and the second liquid inlet pipe 5, and the gap between the cover plate 71 and the second liquid inlet pipe 5 is sealed through the rubber gasket 74.

A filter plate 52 is provided in the second liquid inlet pipe 5, and the filter plate 52 has a circular plate shape as a whole. One end surface of the filter plate 52 in the thickness direction is flush with one end surface of the second inlet pipe 5. In use, if the filter tube 61 is blocked, after water cannot be extracted normally, the nut 73 on the connecting rod 72 is unscrewed, so that the cover plate 71 can be removed from the second liquid inlet tube 5, then the external pipeline is connected to the second liquid inlet tube 5, and then the first liquid inlet tube 4 is blocked by the cover plate 71. After the first liquid inlet pipe 4 is cleaned, the external pipeline is connected to the first liquid inlet pipe 4 again, so that the stop time of the centrifugal pump is reduced, and the extraction efficiency of water is improved.

The implementation principle of the filtering structure of the end suction centrifugal pump in the embodiment of the application is as follows: before use, the motor 1 is arranged on the base, then the external pipeline is respectively connected to the liquid outlet pipe 22 and the first liquid inlet pipe 4, then the cover plate 71 is covered on the second liquid inlet pipe 5, when the pump is used, the motor 1 drives the impeller 21 to rotate, along with the rotation of the impeller 21, water flows into the pump body 2 through the filter pipe 61 and the first liquid inlet pipe 4, and when entering the filter pipe 61, water flows between the filter screen 63 and the gap of the filter pipe 61 through the filtration of the filter core 64 and the filter screen 63, then flows into the first liquid inlet pipe 4 through the guide pipe 65 on the filter pipe 61 and the filter pipe 61, then flows into the pump body 2 through the first liquid inlet pipe 4, and along with the rotation of the impeller 21, the water flows out of the liquid outlet pipe 22 of the pump body 2.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (7)

1. A filter structure of a centrifugal end suction pump, which is characterized in that: the novel centrifugal pump comprises a motor (1), wherein a pump body (2) is arranged on the motor (1), a pump cover (3) is covered on the pump body (2), and an impeller (21) is rotatably arranged between the pump body (2) and the pump cover (3);

a liquid outlet pipe (22) is arranged on the pump body (2), a first liquid inlet pipe (4) and a second liquid inlet pipe (5) are arranged on the pump cover (3), a filter assembly (6) is arranged on the first liquid inlet pipe (4), and the filter assembly (6) filters liquid flowing through the first liquid inlet pipe (4);

the second liquid inlet pipe (5) is detachably provided with a blocking component (7), and the blocking component (7) is used for blocking the second liquid inlet pipe (5).

2. A filtration structure of an end suction centrifugal pump according to claim 1, wherein: the filter assembly (6) comprises a filter pipe (61), the filter pipe (61) is connected to the first liquid inlet pipe (4), a mounting groove (62) is formed in the filter pipe (61), a filter screen (63) is arranged on the mounting groove (62) of the filter pipe (61), a butt strap (631) is formed on the filter screen (63), and the butt strap (631) is erected on the mounting groove (62) of the filter pipe (61).

3. A filtration structure of an end suction centrifugal pump according to claim 2, wherein: the filter screen (63) is provided with filter holes (633), the filter holes (633) are arranged on the filter screen (63) at intervals, and the filter screen (63) and the inner wall of the filter tube (61) are arranged at intervals.

4. A filtration structure of an end suction centrifugal pump according to claim 3, wherein: the filter is characterized in that a filter element (64) is arranged on the inner side of the filter screen (63), a filter channel (641) is formed in the filter element (64), and the filter channel (641) is communicated with the filter hole (633).

5. The filtration structure of an end suction centrifugal pump according to claim 4, wherein: the filter tube (61) is provided with a guide tube (65), the guide tube (65) is connected to the side wall of the filter tube (61), and two ends of the guide tube (65) respectively correspond to two ends of the filter tube (61).

6. A filtration structure of an end suction centrifugal pump according to claim 1, wherein: the plugging assembly (7) comprises a cover plate (71), a connecting rod (72) is arranged on the cover plate (71), a through hole (51) is formed in the second liquid inlet pipe (5), one end of the connecting rod (72) penetrates through the through hole (51), a nut (73) is arranged at one end of the connecting rod (72) penetrating through the through hole (51), and the nut (73) is in threaded connection with the connecting rod (72).

7. The filtration structure of an end suction centrifugal pump according to claim 6, wherein: and a filter plate (52) is arranged at one end, close to the cover plate (71), of the second liquid inlet pipe (5), and the end face of the filter plate (52) is flush with the end face of the second liquid inlet pipe (5).