CN208831253U

CN208831253U - A kind of sewage cutting pump

Info

Publication number: CN208831253U
Application number: CN201821162174.8U
Authority: CN
Inventors: 王永康
Original assignee: Zhejiang Donghang Fire Pump Industry Co Ltd
Current assignee: Zhejiang Donghang Fire Pump Industry Co Ltd
Priority date: 2018-07-21
Filing date: 2018-07-21
Publication date: 2019-05-07
Anticipated expiration: 2028-07-21

Abstract

The utility model discloses a kind of sewage cutting pumps, it is related to water pump technology, its key points of the technical solution are that: including the pump housing, the motor being set on the pump housing, the pump shaft being coaxially connected with the motor output shaft and the impeller being set on the pump shaft, water inlet end and water outlet are provided on the pump housing, the impeller is set in the pump housing, the first cutter are fixed on the impeller, the second cutter abutted against with the first cutter side wall are provided on the water inlet end, several limit studs are provided on the pump housing, it is provided on the limit stud for compressing second cutter in the stop nut of the water inlet end.After the second cutter are worn, it can be by dismantling replacement of the stop nut to the second cutter, so that cutting pump keeps preferable cutting effect, so that reducing flexible sundries enters the case where pump housing is wound impeller and then water pump is caused to damage, reach high security, the effect of long-life.

Description

A kind of sewage cutting pump

Technical field

The utility model relates to water pump technologies, more specifically, it relates to a kind of sewage cutting pump.

Background technique

Cutting pump is one kind of dredge pump, is usually used in the suction blowdown of sewage, due to making with addition of advanced cutting knife Cutting pump under severe conditions can be dross, plastic products and the fibrous sundries chopping in sewage and smooth discharge, nothing Must manually go cleaning cheat in dross and suspended matter, saved city have stable political situation engineering spending.

The Chinese utility model patent that existing such as Authorization Notice No. is CN204755324U discloses a kind of sewage cutting Pump, including pump case, pump shaft and impeller, the blade side of the impeller are equipped with moving knife sword, in the blade surface and pump case of the moving knife sword Wall is tangent, and the face that blade moving knife sword running track is corresponded on the pump case is equipped with water inlet.

Using above-mentioned cutting pump, the shearing force formed between moving knife sword and pump case is cut through, cutting effect is with pump case Closely bound up, when pump case and the edge of the shearing of moving knife sword are worn, cutting effect will be reduced, and to pump case replacement at This is again relatively high, again relatively high to pump case maintenance difficulty, has much room for improvement.

Utility model content

In view of the deficienciess of the prior art, the utility model provides a kind of sewage cutting pump, has and facilitate maintenance Advantage.

To achieve the above object, the utility model provides following technical solution:

A kind of sewage cutting pump, including the pump housing, the motor being set on the pump housing, with the coaxial phase of the motor output shaft Pump shaft even and the impeller that is set on the pump shaft are provided with water inlet end and water outlet on the pump housing, and the impeller is set It is placed in the pump housing, the first cutter is fixed on the impeller, be provided on the water inlet end and first cutter The second cutter that side wall abuts against are provided with several limit studs on the pump housing, are provided with and are used on the limit stud Second cutter are compressed in the stop nut of the water inlet end.

Through the above technical solutions, by way of replacing the second cutter come instead of entire pump case was originally replaced, section Cost has been saved, the second cutter can be replaced as long as dismantling nut, so that the replacement of the second cutter is also more convenient.Second cuts Cutter replacement is convenient, so that the cutting effect of cutting pump is easy to keep a preferable state for a long time, has advantageously reduced strip Flexible sundries enters the case where pump housing is wound impeller and then water pump is caused to damage, thus reach high security, the long-life Effect.

Further, it is provided in the axial direction with fixation hole at the impeller center, fixed baffle ring, institute are provided on the pump shaft It states and is additionally provided with fixture nut on pump shaft, the pump shaft compresses the impeller by fixture nut after the fixation hole and pushes against In the fixed baffle ring.

Through the above technical solutions, after impeller is worn, it can be by dismantling fixture nut, so that impeller and pump shaft Separation, tightens fixture nut and is fixed, again so that the replacement of impeller is more convenient after replacement.

Further, the pump housing includes interconnecting piece and pump cover, and the water outlet and water inlet end are all set on pump cover, institute It states and is provided with gasket between pump cover and interconnecting piece, the pump cover in the gasket and is fixed on the company by bolt presses In socket part.

Through the above technical solutions, strengthening the intracorporal leakproofness of pump, the pump housing and pump cover are bolted, facilitate to pump cover Disassembly, convenient for the replacement of pump body part.

Further, second cutter include cutterhead, it is circumferentially distributed in several blades on the cutterhead, the knife Sword is arranged towards impeller direction.

Through the above technical solutions, the first cutter cooperatively form shear effect from different blades respectively, cutting is strengthened Ability, in addition blade is fixed on cutterhead, can fix each blade together by fixation cutter head.

Further, the area of section of first cutter gradually becomes smaller towards the direction far from the impeller, the knife The area of section of sword gradually becomes smaller towards the direction close to the impeller.

Through the above technical solutions, being intersected by inclined surface, the interface of the first cutter and the second cutter when cutting The cutting process for foring similar scissors, strengthens the cutting effect of cutter.

Further, the blade is provided with blocking portion away from the end face of the cutter axis, and the blocking portion is for limiting It is mobile towards the impeller to make the cutterhead.

Through the above technical solutions, cutterhead, water outlet and two adjacent blades are spliced to form leakage hole, outside water pump Water can be by entering water inlet end after leakage hole, can be directly in the first cutter and second after sundries enters from leakage hole It is sheared under the action of cutter, strengthens cutting effect.

Further, it is inclined surface that the blocking portion, which contradicts the end face of the water inlet end, and the inclined surface is far from described The end of cutterhead extends to the cutter axis side.

Through the above technical solutions, the second cutter are installed to water inlet end, and after cutter are installed to certain depth, inclined surface It pushes against in water inlet end, reaches limit function.

Further, the blade is fixed with locating piece away from the end face of the cutter axis, opens up on the water outlet There is the locating slot for locating piece insertion.

It is rotated through the above technical solutions, limiting the second cutter relative to water inlet end, further strengthens the second cutting The locating effect of knife and water inlet end.

Further, the limit stud is threadedly connected on the pump housing, and what is be provided on the limit stud puts forth effort Portion.

Through the above technical solutions, hold power portion when needing to dismantle limit stud by tool and being rotated, so that limit The disassembly of position stud is more convenient.

Compared with prior art, the utility model has the beneficial effects that

It (1), can be by disassembly stop nut to second after the second cutter are worn by setting stop nut The replacement of cutter, so that the cutting effect of cutting pump keeps a preferable state for a long time, so that it is miscellaneous to reduce flexible lengths Object enters the case where pump housing is wound impeller and then water pump is caused to damage, and reaches high security, the effect of long-life；

(2) by setting blocking portion, cutterhead, water outlet and two adjacent blades can be spliced to form leakage hole, miscellaneous Object can enter from leakage hole, directly shear under the action of the first cutter and the second cutter, strengthen cutting effect；

(3) by setting locating piece and locating slot, the second cutter is limited and are rotated relative to water inlet end, are further strengthened The locating effect of second cutter and water inlet end reinforces the stability of cutting.

Detailed description of the invention

Fig. 1 is the overall schematic of embodiment；

Fig. 2 is the schematic diagram of internal structure of embodiment；

Fig. 3 be implement from partial exploded view, for expressing the assembling of the second cutter and pump cover；

Fig. 4 is the blade wheel structure schematic diagram of embodiment.

Appended drawing reference: 1, motor；2, the pump housing；21, interconnecting piece；22, pump cover；3, pump shaft；4, impeller；5, fixation hole；6, solid Determine baffle ring；7, fixture nut；8, water inlet end；9, water outlet；10, gasket；11, the first cutter；12, the second cutter； 121, cutterhead；122, blade；13, blocking portion；131, inclined surface；14, leakage hole；15, locating piece；16, locating slot；17, it limits Stud；18, stop nut；19, put forth effort portion.

Specific embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

Embodiment:

A kind of sewage cutting pump, as shown in Figure 1 and Figure 2, including the pump housing 2, the motor being set on the pump housing 21, defeated with motor 1 The pump shaft 3 that shaft is coaxially connected and the impeller 4 being set on pump shaft 3.Impeller 4 is set in the pump housing 2, edge at 4 center of impeller Fixation hole 5 axially is offered, fixed baffle ring 6 is provided on pump shaft 3, is additionally provided with fixture nut 7 on pump shaft 3, when pump shaft 3 passes through After fixation hole 5 on impeller 4, impeller 4 is compressed by fixture nut 7 and is pushed against in the fixed baffle ring 6, wherein fixture nut 7 with The rotation of impeller 4 the more revolve the more tight.

Include interconnecting piece 21 and pump cover 22 on the pump housing 2, is provided with interconnected water inlet end 8 and water outlet on pump cover 22 9, wherein the center line of water inlet end 8 is overlapped with the axis of pump shaft 3.Gasket 10 is additionally provided between pump cover 22 and interconnecting piece 21, Pump cover 22 in gasket 10 and is fixedly connected on interconnecting piece 21 by bolt presses.

When sewage cuts pump work, 1 impeller 4 of motor is rotated, and the liquid in the pump housing 2 is rotated with 4 one pieces of impeller, Liquid is thrown away from water outlet 9 by impeller 4 under the action of centrifugal force, and after liquid is thrown out of, vacuum low-pressure is formed at 4 center of impeller Area, the liquid outside the pump housing 2 flow into water pump under the action of external atmosphere pressure through water inlet end 8.

As shown in figure 4, the first cutter 11 are fixedly connected on impeller 4, one end court of first cutter 11 far from impeller 4 The direction for being directed away from impeller 4 to the section of the setting of water inlet end 8 and the first cutter 11 gradually becomes smaller.

As shown in Figure 2 and Figure 3, the second cutter 12 to offset with 11 side wall of the first cutter are provided on water inlet end 8.The Two cutter 12 include the cutterhead 121 of circular ring shape and several blades 122 for being fixedly connected with cutterhead 121, in the present embodiment The quantity of blade 122 is three.The axis of cutterhead 121 is overlapped with the axis of pump shaft 3, three blades 122 along cutterhead 121 axis Line is circumferentially uniformly distributed, and end of the blade 122 far from cutterhead 121 is towards 4 side of impeller.Wherein, the section face of blade 122 Product gradually becomes smaller towards the direction close to impeller 4.

Blade 122 is provided with away from the end of 121 axis of cutterhead for limiting cutterhead 121 towards the pump housing 2 movement Blocking portion 13, blocking portion 13 are the inclined surface 131 being set on blade 122, and wherein inclined surface 131 is located at blade 122 and contacts at The end face of water inlet end 8, and the one end of inclined surface 131 far from cutterhead 121 extends to the axis of the cutterhead 121.When the second cutting Knife 12 pushes against when water inlet end 8, and cutterhead 121, water outlet 9 and two adjacent blades 122 are spliced to form leakage hole 14, the pump housing Water outside 2 can be by entering water inlet end 8 after leakage hole 14.Blade 122 is fixed with locating piece away from the end of 121 axis of cutterhead 15, the locating slot 16 being embedded in for locating piece 15 is offered on water outlet 9.

When impeller 4 rotates, the first cutter 11 follow impeller 4 to rotate and rotate, at this point, the first cutter 11 can phase Second cutter 12 are rotated, complete shearing work to cooperate with the second cutter 12, so that the sundries by water inlet end 8 is broken Chopping fine.

As shown in Figure 1, Figure 3, it is threaded with several limit studs 17 on pump cover 22, limits stud 17 in the present embodiment Quantity is four.What is be respectively and fixedly provided on each limit stud 17 puts forth effort portion 19, and the section for putting forth effort portion 19 is arranged in regular hexagon. It is provided on each limit stud 17 and for compressing the second cutter 12 second cutter 12 is pushed against in the limit of water inlet end 8 Position nut 18.

Second cutter 12 are pressed on water inlet end 8 by stop nut 18, after the abrasion of the second cutter 12, Ke Yitong Crossing disassembly stop nut 18 separates the second cutter 12 with water inlet end 8, to place under repair to the second cutter 12.

When sewage cuts pump work, 1 impeller 4 of motor rotation, impeller 4 drives the first cutter 11 to rotate, and first Shear effect constantly is formed with the second cutter 12 when cutter 11 rotate, will be sheared after sundries enters water inlet end 8 Fragmentation, the sundries after fragmentation follow sewage to pass through water outlet 9 together and are discharged outside the pump housing 2.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims

1. a kind of sewage cutting pump, including the pump housing (2), the motor (1) being set on the pump housing (2), defeated with the motor (1) The pump shaft (3) that shaft is coaxially connected and the impeller (4) being set on the pump shaft (3) are provided with into water on the pump housing (2) It holds (8) and water outlet (9), the impeller (4) is set in the pump housing (2), it is characterised in that: fixed on the impeller (4) Have the first cutter (11), second abutted against with the first cutter (11) side wall is provided on the water inlet end (8) and is cut Cutter (12) is provided with several limit studs (17) on the pump housing (2), is provided on the limit stud (17) for compressing The stop nut (18) of second cutter (12) the Yu Suoshu water inlet end (8).

2. a kind of sewage cutting pump according to claim 1, it is characterised in that: opened at impeller (4) center along axial direction It equipped with fixation hole (5), is provided with fixed baffle ring (6) on the pump shaft (3), is additionally provided with fixture nut on the pump shaft (3) (7), the pump shaft (3) passes through the fixation hole (5) and compresses impeller (4) abutting in described solid by fixture nut (7) afterwards Determine baffle ring (6).

3. a kind of sewage cutting pump according to claim 2, it is characterised in that: the pump housing (2) includes interconnecting piece (21) With pump cover (22), the water outlet (9) and water inlet end (8) are all set on pump cover (22), the pump cover (22) and interconnecting piece (21) it is provided between gasket (10), the pump cover (22) in the gasket (10) and is fixed on described by bolt presses On interconnecting piece (21).

4. a kind of sewage cutting pump according to claim 1, it is characterised in that: second cutter (12) include cutterhead (121), circumferentially distributed in several blades (122) on the cutterhead (121), the blade (122) sets towards impeller (4) direction It sets.

5. a kind of sewage cutting pump according to claim 4, it is characterised in that: the section face of first cutter (11) Product gradually becomes smaller towards the direction far from the impeller (4), and the area of section of the blade (122) is towards close to the impeller (4) Direction gradually become smaller.

6. a kind of sewage cutting pump according to claim 4, it is characterised in that: the blade (122) deviates from the cutterhead (121) end face of axis is provided with blocking portion (13), and the blocking portion (13) is for limiting the cutterhead (121) towards the leaf It is mobile to take turns (4).

7. a kind of sewage cutting pump according to claim 6, it is characterised in that: the blocking portion (13) contradicts the water inlet The end face for holding (8) is inclined surface (131), and the end of the inclined surface (131) far from the cutterhead (121) is to the cutterhead (121) axis side extends.

8. a kind of sewage cutting pump according to claim 7, it is characterised in that: the blade (122) deviates from the cutterhead (121) end face of axis is fixed with locating piece (15), is offered on the water outlet (9) and is determined for the locating piece (15) insertion Position slot (16).

9. a kind of sewage cutting pump according to claim 1, it is characterised in that: the limit stud (17) is threadedly connected to On the pump housing (2), what is be provided on limit stud (17) puts forth effort portion (19).