CN110439824B

CN110439824B - Multistage cutting and crushing sewage pump

Info

Publication number: CN110439824B
Application number: CN201910736640.1A
Authority: CN
Inventors: 孙仙友; 陈平
Original assignee: Lvmei Pump Industry Co Ltd
Current assignee: Lvmei Pump Industry Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-12-11
Anticipated expiration: 2039-08-09
Also published as: CN110439824A

Abstract

The invention discloses a sewage pump for multistage cutting and crushing, which relates to the field of water pumps and adopts the technical scheme that: the pump comprises a pump body and a pump shell arranged at the lower end of the pump body, wherein a pump shaft is arranged on the pump body, the lower end of the pump shaft extends out of the pump body and penetrates into the pump shell, an impeller is also arranged in the pump shell, the impeller is coaxially connected to the pump shaft and used for pumping liquid, a water outlet end and a water inlet end are also communicated with the pump shell, a ring sleeve is connected to the water inlet end, and the ring sleeve and the pump shaft are coaxially arranged; a cutting device is arranged in the ring sleeve and comprises a plurality of cutting knives, a rotating frame and a transmission assembly for driving the cutting knives to rotate; the rotating frames are coaxially provided with two along the axial direction of the pump shaft, the transmission assembly and the cutting knife are both positioned between the two rotating frames, each rotating frame comprises a plurality of mounting strips arranged along the circumferential direction of the pump shaft, and each mounting strip is provided with a cutting edge along the circumferential side wall of the pump shaft. The rotation cutting of cutting edge, cutting knife forms multistage cutting effect to make cutting effect better.

Description

Multistage cutting and crushing sewage pump

Technical Field

The invention relates to the field of water pumps, in particular to a sewage pump for multi-stage cutting and crushing.

Background

Sewage pumps are widely used in sewage treatment.

In a conventional dredge pump, a cutting blade is generally provided at an inlet end, and foreign materials are cut and ground by means of rotary cutting of the cutting blade.

However, when the sewage medium to be conveyed contains more impurities such as sludge, plastic bags, long fibers and the like, the cutting form is single, the cutting effect is poor, so that the impurities are easy to form blockage in the pump and influence the use of the sewage pump, and the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the sewage pump for multi-stage cutting and crushing, which has the advantages of better cutting effect and more stable use of the sewage pump.

In order to achieve the purpose, the invention provides the following technical scheme:

a sewage pump for multi-stage cutting and crushing comprises a pump body and a pump shell arranged at the lower end of the pump body, wherein a pump shaft is arranged on the pump body, the lower end of the pump shaft extends out of the pump body and penetrates into the pump shell, an impeller is also arranged in the pump shell, the impeller is coaxially connected onto the pump shaft and used for pumping liquid, a water outlet end and a water inlet end are also communicated onto the pump shell, the water inlet end is positioned at one end of the pump shell, which is far away from the pump body, a ring sleeve is connected onto the water inlet end, and the ring sleeve and the pump shaft are coaxially arranged; a cutting device is arranged in the ring sleeve and comprises a plurality of cutting knives, a rotating frame coaxially fixed on the pump shaft and a transmission assembly arranged on the rotating frame and used for driving the cutting knives to rotate; the two rotating frames are coaxially arranged along the axial direction of the pump shaft, the transmission assembly and the cutting knife are both positioned between the two rotating frames, each rotating frame comprises a plurality of mounting strips arranged along the circumferential direction of the pump shaft, and each mounting strip is provided with a cutting edge along the circumferential side wall of the pump shaft; the transmission assembly comprises a plurality of planetary gears which are rotatably connected to the mounting strip and a plurality of gear rings which are coaxially fixed on the inner side wall of the ring sleeve and meshed with the planetary gears, the rotating axes of the planetary gears are arranged in parallel with the axis of the pump shaft, the number of the cutting knives is arranged corresponding to the planetary gears, and the cutting knives are correspondingly and coaxially fixed on the planetary gears.

Through the technical scheme, when the pump shaft drives the impeller and rotates and carry out the pump water, the rotation of pump shaft can also drive two rotating turret rotations, when two rotating turrets rotate, the rotating turret rotates and to drive the cutting edge on the mounting bar and rotates and form the cutting, the rotation of rotating turret can also drive planetary gear and rotate along the pump shaft simultaneously, and planetary gear can form the rotation under the cooperation of ring gear this moment, thereby drive the cutting knife and rotate, the cutting edge, the rotation cutting of cutting knife forms multistage cutting effect, thereby make cutting effect better, thereby the debris that have reduced the bold grain enter into the normal operation of influence dredge pump in the pump case, thereby make the use of dredge pump more stable.

Furthermore, the one end that the pump case was kept away from to the ring cover is provided with the filter, be provided with a plurality of filtration holes on the filter.

Through above-mentioned technical scheme, set up the filter, can carry out prefilter to debris through the filter to reduce the condition that bold debris entered into in the pump case, make the dredge pump use more stable.

Furthermore, be close to the filter setting the cutting edge of rotating turret is contradicted in the filter and is close to the one end setting of pump case.

Through above-mentioned technical scheme, the cutting edge is contradicted in the filter, when the pump shaft rotation was followed to the cutting edge, the cutting edge can form shearing effect with the filter cooperation to make debris cut the bits of broken glass when passing through the filter, make holistic crushing effect better.

Furthermore, the one end that the pump case was kept away from to the filter still is provided with the supporting seat, the supporting seat includes a plurality of fixed connection in the bracing piece on the ring cover, is fixed in the bottom plate that the pump case one end was kept away from to the bracing piece.

Through above-mentioned technical scheme, the water inlet can be formed in the clearance between the bracing piece, sets up the supporting seat, supports the dredge pump through the supporting seat, can directly throw away when the dredge pump uses and use in sewage.

Furthermore, the cutting edges on the mounting strip are located on the same side of the mounting strip along the circumferential direction of the pump shaft, the cutting edges are arranged in an inclined mode towards the direction away from the pump shell, and when the pump shaft drives the rotating frame to rotate, the inclined direction of the cutting edges is used for strengthening liquid flowing into the pump shell.

Through above-mentioned technical scheme, the unified setting of cutting edge, when the pump shaft rotation was followed to the cutting edge, cutting edge incline direction can form the crowded water effect of similar screw formation to accelerate in liquid flowed into the pump case, make the pump water of dredge pump more stable.

Further, the cutting knife is close to the rotating frame far away from the pump shell, and the distance between the cutting knife and the rotating frame far away from the pump shell is smaller than or equal to 2 mm.

Through above-mentioned technical scheme, the cutting knife can with keep away from between the rotating turret of pump case and form the cooperation, can cooperate the mounting bar to form the shearing effect when the cutting knife rotates to make crushing effect better.

Furthermore, the inner side wall of the ring sleeve is also coaxially provided with a baffle ring, the baffle ring is positioned between the gear ring and the rotating frame far away from the pump shell, the baffle ring is close to the gear ring, and the inner diameter of the baffle ring is smaller than the diameter of the inner ring of the gear ring.

Through above-mentioned technical scheme, set up and keep off the ring, keep off the ring and can block aquatic debris, restrict debris and enter into the fit clearance of gear and ring gear for holistic operation is more stable.

Furthermore, the one end that the ring gear was kept away from to the fender ring is provided with the spigot surface, the spigot surface is close to the pump shaft slope setting gradually towards the direction that is close to the ring gear.

Through the technical scheme, the guide surface can guide flow, so that the condition that sundries are accumulated on one side of the baffle ring away from the gear ring is reduced.

Furthermore, a flange plate is arranged on the outer side wall of one end, close to the pump shell, of the ring sleeve, and the ring sleeve penetrates through the flange plate through bolts and then is screwed and fixed on the pump shell.

Through above-mentioned technical scheme, through ring flange fixed connection to pump case on, the operation is overhauld to dredge pump and cutting device to the convenience.

Furthermore, a ring groove is coaxially formed in one end, close to the pump shell, of the ring sleeve, and an embedded ring embedded into the ring groove is correspondingly arranged on the pump shell.

Through above-mentioned technical scheme, strengthen sealed through the becket embedding to the annular to make the dredge pump use more stably.

Compared with the prior art, the invention has the beneficial effects that:

(1) the cutting blade and the cutting knife are rotated to cut to form a multi-stage cutting effect, so that the cutting effect is better, the influence on the normal operation of the sewage pump caused by the fact that sundries in large blocks enter the pump shell is reduced, and the sewage pump is more stable to use;

(2) through the arrangement of the filter plate, sundries can be preliminarily filtered through the filter plate, in addition, the cutting edge is abutted against the filter plate, and when the cutting edge rotates along with the pump shaft, the cutting edge can be matched with the filter plate to form a shearing effect, so that the sundries are sheared when passing through the filter plate, and the integral crushing effect is better;

(3) through setting up the fender ring, keep off the ring and can block aquatic debris, restrict debris and enter into the fit clearance of gear and ring gear for holistic operation is more stable.

Drawings

FIG. 1 is an overall schematic view of an embodiment;

FIG. 2 is a partial schematic structural view of an embodiment;

FIG. 3 is a schematic structural diagram of a transmission assembly according to an embodiment.

Reference numerals: 1. a pump body; 2. a pump housing; 3. a water outlet end; 4. a water inlet end; 5. a pump shaft; 6. an impeller; 7. sleeving a ring; 8. a flange plate; 9. a cutting device; 91. a cutting knife; 92. a rotating frame; 921. mounting a bar; 93. a transmission assembly; 931. a planetary gear; 932. a ring gear; 10. a bolt; 11. a ring groove; 12. embedding a ring; 13. a filter plate; 14. a filtration pore; 15. a supporting seat; 151. a support bar; 152. a base plate; 16. cutting edges; 17. a connecting shaft; 18. connecting sleeves; 19. a baffle ring; 20. a guide surface.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

Example (b):

the utility model provides a broken dredge pump of multistage cutting, as shown in figure 1, includes pump body 1 and sets up pump case 2 at pump body 1 lower extreme, and the intercommunication has out water end 3 and water end 4 on pump case 2, and it communicates in the lateral wall of pump case 2 to go out water end 3, and water end 4 is located the one end that pump body 1 was kept away from to pump case 2. The pump body 1 is coaxially provided with a pump shaft 5, the lower end of the pump shaft 5 extends out of the pump body 1 and penetrates into the pump shell 2, the pump shell 2 is also internally provided with an impeller 6, and the impeller 6 is coaxially connected to the pump shaft 5. When the pump body 1 drives the pump shaft 5 to rotate, the impeller 6 on the pump shaft 5 rotates, so that the sewage pump pumps liquid.

As shown in fig. 1 and 2, a ring sleeve 7 is connected to the water inlet end 4, the ring sleeve 7 is coaxially arranged with the pump shaft 5, a flange 8 is arranged on the outer side wall of one end, close to the pump case 2, of the ring sleeve 7, and the ring sleeve 7 is screwed and fixed on the pump case 2 after penetrating through the flange 8 through a bolt 10. One end of the ring sleeve 7 close to the pump shell 2 is coaxially provided with a ring groove 11, and the pump shell 2 is correspondingly provided with an embedded ring 12 embedded into the ring groove 11. The engagement of the insert ring 12 in the annular groove 11 enhances the sealing effect when the ring 7 is mounted on the pump housing 2.

The one end that pump case 2 was kept away from to ring cover 7 is provided with filter 13, is provided with a plurality of filtration pores 14 on the filter 13, and the one end that pump case 2 was kept away from to filter 13 still is provided with supporting seat 15, and supporting seat 15 includes a plurality of fixed connection in the bracing piece 151 on ring cover 7, is fixed in the bottom plate 152 that pump case 2 one end was kept away from to bracing piece 151. The water inlet can be formed in the clearance between the bracing piece 151, supports the dredge pump through supporting seat 15 in addition, can directly throw away when the dredge pump uses and use in sewage for the dredge pump uses more conveniently.

As shown in fig. 1 and 2, the pump shaft 5 extends into the ring sleeve 7, and a cutting device 9 is further disposed in the ring sleeve 7, wherein the cutting device 9 includes a plurality of cutting blades 91, a rotating frame 92 and a transmission assembly 93. The rotating frames 92 are coaxially fixed on the pump shaft 5, and two rotating frames 92 are coaxially arranged along the axial direction of the pump shaft 5. The rotating frame 92 includes a plurality of mounting strips 921 uniformly arranged along the circumferential direction of the pump shaft 5, and in the embodiment, the number of the mounting strips 921 of each rotating frame 92 is three. Every mounting strip 921 is provided with cutting edge 16 along the lateral wall of pump shaft 5 circumference, and cutting edge 16 on the mounting strip 921 all is located the same one side of mounting strip 921 along pump shaft 5 circumference, and cutting edge 16 sets up towards the direction slope of keeping away from pump case 2, and when pump shaft 5 drove the rotating turret 92 and rotates, cutting edge 16's slant can be used for strengthening in liquid inflow pump case 2. In addition, the cutting edge 16 of the rotating frame 92 disposed adjacent to the filter plate 13 is disposed to abut against one end of the filter plate 13 adjacent to the pump case 2. When the cutting edge 16 rotates along with the pump shaft 5, the cutting edge 16 can be matched with the filter plate 13 to form a shearing effect, so that sundries are sheared when passing through the filter plate 13, and the overall crushing effect is better.

As shown in fig. 2 and 3, the transmission assembly 93 and the cutting knife 91 are both located between the two rotating frames 92, and the transmission assembly 93 is used for driving the cutting knife 91 to rotate for further crushing. The transmission assembly 93 includes a plurality of planetary gears 931 rotatably connected to the mounting strip 921, and a ring gear 932 coaxially fixed to an inner side wall of the ring housing 7 and engaged with the plurality of planetary gears 931. The connecting shaft 17 is connected to the mounting strip 921 corresponding to the two rotating frames 92, and the planetary gear 931 is rotatably connected to the connecting shaft 17. The rotation axis of the planetary gear 931 is arranged parallel to the axis of the pump shaft 5, a connecting sleeve 18 is coaxially fixed at one end of the planetary gear 931 far away from the pump shell 2, and one end of the connecting sleeve 18 far away from the planetary gear 931 butts against the mounting strip 921. The end of the planetary gear 931, which is far away from the connecting sleeve 18, is provided with a limiting ring, the limiting ring is sleeved on the connecting shaft 17 and fixed to the connecting shaft 17 through a screw, and the limiting ring abuts against the end of the planetary gear 931, which is far away from the connecting sleeve 18, for limiting.

The cutting knife 91 comprises a plurality of blades distributed along the circumferential direction of the connecting sleeve 18, and the cutting knife 91 is fixedly connected to the connecting sleeve 18 to be coaxially fixed on the planetary gear 931. When cutting knife 91 rotated, cutting knife 91 can form the effect of screw and drain to make liquid arrange in the pump case 2, thereby make the flow direction of rivers more unified in the ring cover 7. The cutting knife 91 is close to the setting of the rotating turret 92 of keeping away from the pump case 2, and the cutting knife 91 and the distance less than or equal to 2mm between the rotating turret 92 of keeping away from the pump case 2, and the adapter sleeve 18 is contradicted in the setting of mounting bar 921 and can make things convenient for the location of cutting knife 91.

The thickness of the ring gear 932 is set larger than that of the planetary gear 931 so that the fitting of the planetary gear 931 and the ring gear 932 is more stable. The inner side wall of the ring sleeve 7 is also coaxially provided with a baffle ring 19, the baffle ring 19 is positioned between the gear ring 932 and the rotating frame 92 far away from the pump shell 2, the baffle ring 19 is arranged close to and abutted against the gear ring 932, and the inner diameter of the baffle ring 19 is smaller than the diameter of the inner ring of the gear ring 932. The end of the retainer ring 19 remote from the ring gear 932 is provided with a guide surface 20, and the guide surface 20 is disposed to be inclined toward the pump shaft 5 toward the ring gear 932. The baffle ring 19 can block sundries in water and limit the sundries from entering the fit clearance between the gear and the gear ring 932, so that the whole operation is more stable.

The working principle of the embodiment is as follows:

when adopting above-mentioned dredge pump, when pump shaft 5 drives impeller 6 and rotates when pumping water, the rotation of pump shaft 5 can also drive two rotating turret 92 and rotate, when two rotating turret 92 rotate, rotating turret 92 rotates and can drive the cutting edge 16 on the mounting bar 921 and rotate and form the cutting, simultaneously rotating turret 92's rotation can also drive planetary gear 931 and rotate along pump shaft 5, and planetary gear 931 can form the rotation under the cooperation of ring gear 932 this moment, thereby drive cutting knife 91 and rotate, cutting edge 16, the rotation cutting of cutting knife 91 forms the effect of multistage cutting, thereby make the cutting effect better.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a broken dredge pump of multistage cutting, includes pump body (1) and sets up pump case (2) at pump body (1) lower extreme, be provided with pump shaft (5) on pump body (1), pump shaft (5) lower extreme stretch out in pump body (1) and penetrate to pump case (2) in, still be provided with impeller (6) in pump case (2), impeller (6) coaxial coupling is used for pump liquid on pump shaft (5), still the intercommunication has water outlet end (3) and water inlet end (4) on pump case (2), water inlet end (4) are located pump case (2) and keep away from the one end of pump body (1), its characterized in that: the water inlet end (4) is connected with a ring sleeve (7), and the ring sleeve (7) and the pump shaft (5) are coaxially arranged;

a cutting device (9) is arranged in the ring sleeve (7), and the cutting device (9) comprises a plurality of cutting knives (91), a rotating frame (92) coaxially fixed on the pump shaft (5), and a transmission assembly (93) arranged on the rotating frame (92) and used for driving the cutting knives (91) to rotate;

the two rotating frames (92) are coaxially arranged along the axial direction of the pump shaft (5), the transmission assembly (93) and the cutting knife (91) are both positioned between the two rotating frames (92), each rotating frame (92) comprises a plurality of mounting strips (921) arranged along the circumferential direction of the pump shaft (5), and each mounting strip (921) is provided with a cutting edge (16) along the circumferential side wall of the pump shaft (5);

the transmission assembly (93) comprises a plurality of planetary gears (931) which are rotatably connected to the mounting strip (921), and a gear ring (932) which is coaxially fixed on the inner side wall of the ring sleeve (7) and is meshed with the plurality of planetary gears (931), the rotating axes of the planetary gears (931) are arranged in parallel to the axis of the pump shaft (5), the number of the cutting knives (91) is arranged corresponding to the planetary gears (931), and the cutting knives (91) are correspondingly and coaxially fixed on the planetary gears (931);

a baffle ring (19) is coaxially arranged on the inner side wall of the ring sleeve (7), the baffle ring (19) is positioned between the gear ring (932) and a rotating frame (92) far away from the pump shell (2), the baffle ring (19) is arranged close to the gear ring (932), and the inner diameter of the baffle ring (19) is smaller than the diameter of the inner ring of the gear ring (932); one end, far away from ring gear (932), of fender ring (19) is provided with guide surface (20), guide surface (20) are close to pump shaft (5) slope setting gradually towards the direction that is close to ring gear (932).

2. A multiple stage cutting and chopping dredge pump of claim 1 wherein: one end, far away from the pump case (2), of the ring sleeve (7) is provided with a filter plate (13), and a plurality of filter holes (14) are formed in the filter plate (13).

3. A multiple stage cutting and chopping dredge pump of claim 2 wherein: the cutting edge (16) of the rotating frame (92) which is arranged close to the filter plate (13) is abutted against one end, close to the pump shell (2), of the filter plate (13).

4. A multiple stage cutting and chopping dredge pump of claim 3 wherein: one end of the pump shell (2) far away from the filter plate (13) is further provided with a supporting seat (15), and the supporting seat (15) comprises a plurality of supporting rods (151) fixedly connected to the ring sleeve (7) and a bottom plate (152) fixed at one end of the supporting rods (151) far away from the pump shell (2).

5. A multiple stage cutting and chopping dredge pump of claim 1 wherein: the utility model discloses a pump casing, including pump casing (2), cutting edge (16) on mounting bar (921), cutting edge (16) all lie in mounting bar (921) along pump shaft (5) circumference same one side, cutting edge (16) set up towards the direction slope of keeping away from pump casing (2), and when pump shaft (5) drove rotating turret (92) and rotate, the slant of cutting edge (16) was used for strengthening in the liquid inflow pump casing (2).

6. A multiple stage cutting and chopping dredge pump of claim 1 wherein: the cutting knife (91) is close to the rotating frame (92) far away from the pump shell (2) and the distance between the cutting knife (91) and the rotating frame (92) far away from the pump shell (2) is less than or equal to 2 mm.

7. A multiple stage cutting and chopping dredge pump of claim 1 wherein: the outer side wall of one end, close to the pump shell (2), of the ring sleeve (7) is provided with a flange plate (8), and the ring sleeve (7) penetrates through the flange plate (8) through a bolt (10) and then is screwed and fixed on the pump shell (2).

8. A multiple stage cutting and chopping dredge pump of claim 7 wherein: the ring sleeve (7) is close to one end of the pump shell (2) and is coaxially provided with a ring groove (11), and the pump shell (2) is correspondingly provided with an embedded ring (12) embedded into the ring groove (11).