CN212508850U

CN212508850U - Sewage pump with cutting structure

Info

Publication number: CN212508850U
Application number: CN202020843998.2U
Authority: CN
Inventors: 余胜聪; 余潇; 余正闯
Original assignee: Yongjia Sewage Pump Industrial Co
Current assignee: Yongjia Sewage Pump Industrial Co
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-02-09
Anticipated expiration: 2030-05-19

Abstract

The utility model provides a dredge pump with cutting structure, including the pump body and the motor of taking the output shaft, the pump body is including inner chamber and inlet tube, be provided with impeller and cutting assembly in the inner chamber, the impeller is fixed on the output shaft, cutting assembly is including the cutting knife, blade disc and the driven shaft of being connected with output shaft transmission, be provided with coupling assembling between output shaft and the transmission shaft, coupling assembling is including first connecting piece, second connecting piece and a plurality of connecting bolt, a plurality of through-holes of circumference having arranged on the first connecting piece, be provided with the elasticity filling layer between through-hole and the connecting bolt, a plurality of screws of circumference having arranged on the second connecting piece, the connecting bolt is including the bolt cap that can cover the through-hole formation. Not enough to prior art, the utility model provides a dredge pump with cutting structure, its reverse conduction that can reduce the cutting knife operation in-process and receive the resistance guarantees the life of equipment.

Description

Sewage pump with cutting structure

Technical Field

The utility model relates to a dredge pump with cutting structure.

Background

The sewage pump is a pump used for turbid fluid with more impurities such as solid, fiber and the like, and generally comprises a motor and a pump body, wherein the pump body comprises an inner cavity, a water inlet pipe and a water outlet pipe, an impeller is arranged in the inner cavity, the impeller is fixed on a motor output shaft, the fluid entering the inner cavity through the water inlet pipe is driven to carry out centrifugal motion by rotating the impeller through the driving of the motor, a medium is thrown out through the water outlet pipe in the centrifugal motion process and forms a vacuum state of the inner cavity, so that the medium in the water inlet pipe is sucked into the inner cavity to form circulation, when more fiber impurities exist in the fluid, a cutting structure needs to be arranged at the water inlet pipe of the sewage pump, the cutting structure comprises a driven shaft, a cutting knife and a cutter disc, the driven shaft and the motor output shaft are fixed and form transmission fit, and the cutting knife is, the cutter disc is fixed at the position of the water inlet pipe, and fiber impurities mixed in the fluid are cut through the cutting knife and the cutter disc.

However, in the prior art, the sewage pump with the cutting structure operates in a turbid fluid environment, and the cutting knife of the sewage pump often receives resistance of impurities in the operation process, and the resistance from the impurities is conducted to the connection position of the motor output shaft and the transmission shaft or the connection structure of the motor and the motor output shaft, so that the connection between the motor output shaft and the driven shaft is easy to loose or the motor is damaged, and the service life of equipment is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a dredge pump with cutting structure, its reverse conduction that can reduce the cutting knife operation in-process and receive the resistance guarantees the life of equipment.

In order to achieve the purpose, the utility model provides a dredge pump with cutting structure, which comprises a pump body and a motor with an output shaft, wherein the pump body comprises an inner cavity and a water inlet pipe, the inner cavity is internally provided with an impeller and a cutting assembly, the impeller is fixed on the output shaft, the cutting assembly comprises a cutting knife, a cutter head and a driven shaft which is in transmission connection with the output shaft, a connecting assembly is arranged between the output shaft and the drive shaft, the connecting assembly comprises a first connecting piece, a second connecting piece and a plurality of connecting bolts, the first connecting piece is arranged on the output shaft and can synchronously rotate with the output shaft, a plurality of through holes are circumferentially distributed on the first connecting piece, the through holes can be penetrated by the connecting bolts, an elastic filling layer is arranged between the through holes and the connecting bolts, the second connecting piece is fixed on the driven shaft, a plurality of screw holes which can be in threaded fit with the connecting bolts are circumferentially distributed on the second connecting piece, the connecting bolt comprises a bolt cap capable of covering the through hole.

The technical scheme has the advantages that: through setting up first connecting piece and the second connecting piece at output shaft and transmission epaxial respectively, when the output shaft operates, kinetic energy need pass through the output shaft, first connecting piece, connect the bolt, last transmission is to second connecting piece and driven shaft, vice versa, receive the resistance that comes from the cutting knife when the driven shaft, transmit to when connecting bolt department, can cushion through the elasticity filling layer between through-hole and the connection bolt, effectively reduce the cutting knife and receive the reverse conduction of resistance in the operation process, avoid conducting to the junction of motor output shaft and transmission shaft, or conduct to the connection structure of motor and motor output shaft, the fixed structural connection of support of messenger output shaft and/or transmission shaft is not hard up, guarantee the life of equipment.

The utility model discloses can further set up to: the coupling assembling including the elasticity gasket, the elasticity gasket set up between first connecting piece and second connecting piece, and the elasticity gasket can supply the connecting bolt to wear to establish.

Through further setting up, on the one hand, avoid at first connecting piece and second connecting piece at the in-process that plays buffering effect, when first connecting piece and second connecting piece rotate relatively, wearing and tearing take place for the butt face between the two, on the other hand, after the screw spiro union cooperation on connecting bolt and the second connecting piece, the elastic gasket can provide the elastic force of supporting tightly between both flanks for connecting bolt and screw, prevents not hard up.

The utility model discloses can further set up to: the second connecting piece including rear end and front end, the rear end can cover first connecting portion formation, the front end extend and the setting that diminishes towards the cutting knife direction.

Through further setting up, because the service environment of dredge pump is comparatively abominable, there are more impurity in the fluid, and the first connecting portion in rear end of second connecting piece forms and covers, can prevent that first connecting portion from receiving the impact of fluid and wherein impurity to by the front end that the second connecting piece is gradually littleer towards the cutting knife, dissolve the impact force of fluid and wherein impurity in the fluid.

The utility model discloses can further set up to: the cutter disc fix in inlet tube department, the cutter disc including the hole that can supply the driven shaft holding, be provided with the bearing between hole and the driven shaft.

Through further setting up, through set up the bearing between blade disc hole and driven shaft, on the one hand owing to can guarantee the concentricity of output shaft and driven shaft, on the other hand for the driven shaft provides the support, avoids the orbit of cutting knife to receive impurity interference to lead to the cutting knife further with the pump body in other parts collide with, the condition of damage take place.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present invention;

fig. 4 is an enlarged view of a portion b in fig. 2 according to an embodiment of the present invention.

Wherein: a pump body 1; an inner cavity 11; a water inlet pipe 12; a water outlet pipe 13; a motor 2; an output shaft 21; an impeller 3; a cutting assembly 4; a cutting blade 41; the cutter head 42; an inner bore 421; a driven shaft 43; a connecting assembly 5; a first connecting member 51; a through hole 511; a second connecting member 52; a screw hole 521; a rear end 522; a front end 523; a connecting bolt 53; a plug cap 531; an elastomeric filler layer 54; an elastic pad 55; a bearing 6; a contact seal ring 61; a mechanical seal 7; and a radial bearing 8.

Detailed Description

The utility model relates to an embodiment of dredge pump with cutting structure is shown in fig. 1-4: including the pump body 1 and the motor 2 who takes output shaft 21, the pump body 1 including inner chamber 11, inlet tube 12 and outlet pipe 13, inner chamber 11 in be provided with impeller 3 and cutting assembly 4, impeller 3 fix on output shaft 21, cutting assembly 4 including cutting knife 41, blade disc 42 and the driven shaft 43 of being connected with the transmission of output shaft 21, output shaft 21 and transmission shaft 43 between be provided with coupling assembling 5, coupling assembling 5 including first connecting piece 51, second connecting piece 52 and a plurality of connection bolt 53, first connecting piece 51 set up on output shaft 21 and can rotate rather than synchronous, first connecting piece 51 be cylindrical, a plurality of through-holes 511 have been arranged to circumference on first connecting piece 51, through-hole 511 can supply connection bolt 53 to wear to establish, and be provided with elasticity filling layer 54 between through-hole 511 and the connection bolt 53, the second connecting piece 52 is fixed on the driven shaft 43, a plurality of screw holes 521 capable of being in threaded fit with the connecting bolt 53 are circumferentially arranged on the second connecting piece 52, and the connecting bolt 53 comprises a bolt cap 531 capable of covering the through hole 511.

The connecting assembly 5 includes an elastic pad 55, the elastic pad 55 is disposed between the first connecting member 51 and the second connecting member 52, and the elastic pad 55 is used for the connecting bolt 53 to pass through.

The second connecting member 52 includes a rear end 522 and a front end 523, in this embodiment, the rear end 522 is a circular arrangement with a radius consistent with that of the first connecting portion 51, the rear end 522 can cover the first connecting portion 51, and the front end 523 extends towards the cutting blade 41 and is gradually reduced.

Blade disc 42 fix in inlet tube 12 department, blade disc 42 including the hole 421 that can supply driven shaft 43 holding, be provided with bearing 6 between hole 421 and the driven shaft 43, the bearing be angular contact ball bearing, can bear radial and axial load simultaneously, the bearing including contact sealing washer 61, prevent inside the fluid infiltration bearing, certainly can also play the effect of protection bearing 6 through installing the baffle additional between driven shaft 43 and blade disc 42. In the present embodiment, the output shaft 21 is further provided with a mechanical seal 7 and a radial bearing 8 between the motor 2 and the driven shaft 43.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a dredge pump with cutting structure, is including the pump body and take the motor of output shaft, the pump body including inner chamber and inlet tube, the inner chamber in be provided with impeller and cutting assembly, the impeller fix on the output shaft, cutting assembly including cutting knife, blade disc and with output shaft transmission connection's driven shaft, its characterized in that: output shaft and transmission shaft between be provided with coupling assembling, coupling assembling including first connecting piece, second connecting piece and a plurality of connecting bolt, first connecting piece set up on the output shaft and can rotate rather than synchronous, a plurality of through-holes of circumference arrangement on the first connecting piece, the through-hole can supply the connecting bolt to wear to establish, and be provided with the elasticity filling layer between through-hole and the connecting bolt, the second connecting piece fix on the driven shaft, circumference arrangement on the second connecting piece a plurality of can with connecting bolt spiro union complex screw, the connecting bolt including can form the bolt cap that covers to the through-hole.

2. The dredge pump with cutting structure of claim 1, wherein: the coupling assembling including the elasticity gasket, the elasticity gasket set up between first connecting piece and second connecting piece, and the elasticity gasket can supply the connecting bolt to wear to establish.

3. The dredge pump with cutting structure of claim 1 or 2, characterized in that: the second connecting piece including rear end and front end, the rear end can cover first connecting portion formation, the front end extend and the setting that diminishes towards the cutting knife direction.

4. The dredge pump with cutting structure of claim 1 or 2, characterized in that: the cutter disc fix in inlet tube department, the cutter disc including the hole that can supply the driven shaft holding, be provided with the bearing between hole and the driven shaft.