CN105736392A - Centrifugal sewage pump - Google Patents
Centrifugal sewage pump Download PDFInfo
- Publication number
- CN105736392A CN105736392A CN201410732817.8A CN201410732817A CN105736392A CN 105736392 A CN105736392 A CN 105736392A CN 201410732817 A CN201410732817 A CN 201410732817A CN 105736392 A CN105736392 A CN 105736392A
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- impeller
- pump
- mechanical seal
- fixing
- ring
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Abstract
The invention discloses a centrifugal sewage pump, mainly comprising a pump body, a pump shaft, an impeller, mechanical seal, a front end cover, a motor, a rear cover, and a control system. The pump is characterized in that the distance between the outer end face of the impeller in an impeller cavity of the pump body and an inlet is larger than hub thickness of the impeller, so that the gap between the pump body and a blade has a large channel holding cavity, and large diameter particles can pass through the large channel holding cavity. The impeller is formed by a hub, an impeller plate, and two helical blades. The impeller plate is fixed on one end of the hub, and the periphery of the impeller plate is provided with two helical blades. The initiating end of the helical blade is fixedly connected with the hub, and the bottom is fixed on the impeller. The helical cambered surface of the helical blade spans three quadrants from the initiating end along the surface of the impeller plate, and then the tail end is corresponding to the outer edge of the impeller plate. The sewage pump is characterized by no overloading in total head, convenient and fast when dismounting and changing the impeller, the mechanical seal, and cables, better sealing effect, higher complete machine stability, longer life, and flexible and diverse installation methods.
Description
Technical field
The present invention relates to mechanical engineering pump technical field, specifically a kind of centrifugal sewage pump.
Background technology
At present, existing centrifugal sewage pump is mainly made up of the pump housing, pump shaft, impeller, impeller nut, pump cover, connection seat, the non-integrated mechanical sealing of Double End, bearing, bearing gland, rotor, stator, casing, upper end cover, connector cover, cable, cable jam nut.It is not enough: one be the pump housing is screw type spiral case, blade wheel structure has vane type, single channel formula, dual channel formula, although these several structures are higher than general vane type centrifugal pump handling capacity, but it is limited, wherein single channel handling capacity relatively can be more better, but Procedure of Single-channel Pump not easily casts, and the asymmetric waterpower caused of runner is uneven, even if it is very good that impeller dynamic balancing before armored pump is done, during pump operation, current are also asymmetric, it is easy to produce vibration, noise, and even pump lost efficacy and cannot use；Though it is unfavorable that two blade impeller can solve that single channel asymmetric bring, but the handling capacity of solid particle can reduce by half.Existing product also has the pump housing and the impeller of spiral-flow type structure, but the structure of impeller is all Multi-vane type, it is generally 5 ~ 8, even tens, and blade shape is prismatic blade, or there are a bit of antecurvature or palintrope in blade exit place, the comparatively mild power curve of the flow lift characteristic curve of this structure pump rises very fast with changes in flow rate, it is easy to overpower phenomenon occur.Two need to dismantle the pump housing, pump cover, 4 or 6 connecting bolts of connection seat when being and change impeller, waste time and energy, and mechanical seal simultaneously also can loosen, and in oil pocket, lubricating oil also needs emptying in advance.Three is pump cover and connection seat composition sealing grease chamber, the non-integrated mechanical sealing of Double End or two independent single mechanical end face seals it are provided with in grease chamber, installation is wasted time and energy, not easily operate, user scene needs dismounting impeller, pump cover when changing mechanical seal, machine envelope stationary ring, rotating ring and other part, dismounting piecemeal, complex steps.Four be motor is common submersible motor, not easily cools down, it is desirable to have recirculated water can cool down, and motor cable wiring is relatively complicated, needs to take connector cover apart and just can carry out wiring, be loaded on connector cover, cause that operating procedure is more after connecting when changing cable；Five is overall structure or for vertical, or be horizontal, and vertical crouching can not be changed mutually.
Summary of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, it is provided that a kind of novel structure, by property and non-destructive all better, reduce rate of depreciation, there is total head No-mistake Principle characteristic, disassembling, assembling and replacing impeller, machine envelope, cable time more convenient and quicker, sealing effectiveness is better, complete machine stability is higher, the life-span is longer, the flexile centrifugal sewage pump of mounting means
The technical solution adopted for the present invention to solve the technical problems is:
nullA kind of centrifugal sewage pump，Mainly include the pump housing、Pump shaft、Impeller、Mechanical seal、Drive end bearing bracket、Motor、Bonnet and control system，It is characterized in that the impeller outer end face in the impeller cavity of the described pump housing and the distance between the import hub thickness more than impeller，So that making the gap between the pump housing and blade have big channel receptacle，Major diameter granule can be passed through，Described impeller is by wheel hub、The impeller disk and two helical blade compositions，The described impeller disk is fixed on wheel hub one end，On the impeller disk, Circle-Array shows two helical blades，Described helical blade initiating terminal is fixing with wheel hub to be connected，Bottom is fixed on impeller，It is corresponding with impeller disk outer rim that the spiral cambered surface of described helical blade is crossed over three quadrant rearward ends by initiating terminal along impeller disk perficial helical，To ensure by object without impeller channel，Therefore it is not easily susceptible to damage by object，Integrity is better，And impeller is not easy to abrasion，It is greatly improved its service life.
The pump housing of the present invention and drive end bearing bracket link are respectively equipped with annular slot, the described pump housing blocks and fixing with annular slot through stainless steel lathe dog respectively mutually with drive end bearing bracket, described stainless steel lathe dog is to be relatively fixed by two semi-circular card hoop bodies to form, described stainless steel lathe dog is by locating ring, connect ring and elastic apical ring composition, described locating ring two ends respectively be connected that ring is vertical fixing to be connected, two connect the corresponding inner side of the ring other end fix vertical with elastic apical ring respectively and are connected, it is beneficial to the pump housing and drive end bearing bracket be clamped by elastic apical ring, the effect being beneficial to reach Fast Installation and dismounting is avoided to dismantle the pump housing during replacing impeller, pump cover, connect the deficiency of 4 or 6 connecting bolts of seat, simultaneously, also avoid mechanical seal to occur loosening in unloading process, in oil pocket, lubricating oil also needs the substantive not enough of emptying in advance.
The present invention can be cased with end cover on the pump shaft between drive end bearing bracket and impeller, described end cover and drive end bearing bracket are tightly connected and form sealing grease chamber, described Seal Oil indoor are provided with packaging type double mechanical seal, described double mechanical seal warp beam sleeve is connected with pump shaft, axle sleeve in the middle of described double mechanical seal is provided with baffle plate, double mechanical seal is made each to work alone when being beneficial to work, even if media end seal failure, atmosphere end seals without being affected, medium will not be seeped in the bearing chamber of motor and motor cavity and cause bearing, motor failure, therefore have quick and easy for installation, seal effect reliably, avoid and when mechanical seal is changed at user scene, need dismounting impeller, pump cover, machine envelope stationary ring, the substantive deficiency of rotating ring and other part.
The present invention can be provided with sewage detection sensor in Seal Oil indoor; after having sewage to leak in annular seal space grease chamber and reach certain proportion; detection sensor will be connected; send alarm signal; and upload control system; control system sends instruction and cuts off pump power power supply, thus protecting bearing, motor therefore to damage.
The present invention can be provided externally with fin at the motor casing of described motor, and with auxiliary heat dissipation, described cable connector adopts ready-packaged joint, to reach effect easy for installation.
The present invention also can be provided with supporting leg and support, and described motor tail end is fixing with supporting leg top to be connected, and the flange of described pump housing entrance point is fixing with support to be connected, so that the present invention has the function of horizontal-vertical double-purpose.
Due to the fact that employing said structure so that this pump configuration is novel, by property and non-destructive all better, reduce rate of depreciation, there is total head No-mistake Principle characteristic, disassembling, assembling and replacing impeller, machine envelope, cable time more convenient and quicker, sealing effectiveness is better, complete machine stability is higher, the life-span is longer, mounting means is versatile and flexible.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the complete machine of the present invention.
Fig. 2 is the structural representation of described impeller.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structure for amplifying schematic diagram at the middle I place of the present invention.
Accompanying drawing labelling: the pump housing 1, pump shaft 2, impeller 3, mechanical seal 4, drive end bearing bracket 5, motor 6, bonnet 7, wheel hub 8, the impeller disk 9, helical blade 10, stainless steel lathe dog 11, locating ring 12, connection ring 13, elastic apical ring 14, end cover 15, axle sleeve 16, baffle plate 17, detection sensor 18, ready-packaged joint 19, supporting leg 20, support 21.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described:
nullAs shown in Figure 1，A kind of centrifugal sewage pump，Mainly include the pump housing 1、Pump shaft 2、Impeller 3、Mechanical seal 4、Drive end bearing bracket 5、Motor 6、Bonnet 7 and control system，The described pump housing 1 is connected through drive end bearing bracket 5 and motor 6 is fixing，Described motor 6 rear end is fixing with bonnet 7 to be connected，It is provided with impeller cavity in the described pump housing 1，The described pump housing 1 is axially arranged with inlet，It is radially provided with sewage draining exit，Described impeller cavity is connected with sewage draining exit respectively at inlet，Described pump shaft 2 is fixing with the impeller 3 in impeller cavity through one end, drive end bearing bracket 5 center to be connected，The other end is fixing with motor shaft to be connected，Pump shaft between described drive end bearing bracket 5 and impeller 3 is provided with mechanical seal 4，Described motor 6 controls through controlling system，It is characterized in that the impeller outer end face in the impeller cavity of the described pump housing 1 and the distance between the import hub thickness more than impeller，So that the gap between the pump housing 1 and impeller 3 has big channel receptacle，Major diameter granule can be passed through，Described impeller 3 is by wheel hub 8、The impeller disk 9 and two helical blades 10 form，The described impeller disk 9 is fixed on wheel hub 8 one end，On the impeller disk 9, Circle-Array shows two helical blades 10，Described helical blade 10 initiating terminal is fixing with wheel hub 8 to be connected，Bottom is fixed on the impeller disk 9 surface，It is corresponding with the impeller disk 9 outer rim that the spiral cambered surface of described helical blade 10 is crossed over three quadrant rearward ends by initiating terminal along the impeller disk 9 perficial helical，To ensure by object without impeller channel，Therefore it is not easily susceptible to damage by object，Integrity is better，And impeller is not easy to abrasion，It is greatly improved its service life.
nullThe pump housing 1 of the present invention and drive end bearing bracket 5 link are respectively equipped with annular slot，The described pump housing 1 blocks and fixing with annular slot through stainless steel lathe dog 11 respectively mutually with drive end bearing bracket 5，Described stainless steel lathe dog 11 is to be relatively fixed by two semi-circular card hoop bodies to form，Described stainless steel lathe dog is by locating ring 12、Connect ring 13 and elastic apical ring 14 forms，Described locating ring 12 two ends respectively be connected that ring 13 is vertical fixing to be connected，Two connect the corresponding inner side of ring 13 other end fix vertical with elastic apical ring 14 respectively and are connected，It is beneficial to the pump housing 1 and drive end bearing bracket 5 be held out against by elastic apical ring 14，The effect being beneficial to reach Fast Installation and dismounting is avoided to dismantle the pump housing 1 during replacing impeller、Drive end bearing bracket 5、Connect the deficiency of upper 4 or 6 connecting bolts of seat，Simultaneously，Also avoid mechanical seal to occur loosening in unloading process、In oil pocket, lubricating oil also needs the substantive not enough of emptying in advance.
The present invention can be cased with end cover 15 on the pump shaft 2 between drive end bearing bracket 5 and impeller 3, described end cover 15 and drive end bearing bracket 5 are tightly connected and form sealing grease chamber, described Seal Oil indoor are provided with packaging type double mechanical seal 4, described double mechanical seal 4 warp beam sleeve 16 is connected with pump shaft, axle sleeve 16 in the middle of described double mechanical seal 4 is provided with baffle plate 17, double mechanical seal is made each to work alone when being beneficial to work, even if media end seal failure, atmosphere end seals without being affected, medium will not be seeped in the bearing chamber of motor and motor cavity and cause bearing, motor failure, therefore have quick and easy for installation, seal effect reliably, avoid and when mechanical seal is changed at user scene, need dismounting impeller, pump cover, machine envelope stationary ring, the substantive deficiency of rotating ring and other part.
The present invention can be provided with sewage detection sensor 18 in described Seal Oil indoor; after having sewage to leak in annular seal space grease chamber and reach certain proportion; detection sensor 18 will be connected; send alarm signal; and upload control system; control system sends instruction and cuts off pump power power supply, thus protecting bearing, motor therefore to damage.
The present invention can be provided externally with fin at the motor casing of described motor 6, and with auxiliary heat dissipation, described cable connector adopts ready-packaged joint 19, to reach effect easy for installation.
The present invention also can be provided with supporting leg 20 and support 21, and described motor 6 tail end is fixing with supporting leg 20 top to be connected, and the flange of the described pump housing 1 entrance point is fixing with support 21 to be connected, so that the present invention has the function of horizontal-vertical double-purpose.
The present invention is operationally, when the horizontal work of needs, can mounting bracket and supporting leg, when needs vertical working, support and supporting leg can be dismantled, at work, owing to this pump has the big passage pump housing, gap between the pump housing and blade is comparatively spacious, major diameter granule can be passed through, and the spiral cambered surface of the helical blade on the impeller disk is corresponding with impeller outer edge along impeller surface spiral three quadrant rearward ends of leap by initiating terminal, under the effect of this impeller (structure is as shown in Figure 2), because of by object without impeller channel, therefore it is not easily susceptible to damage by object, integrity is better, it is not easy to abrasion, it is greatly improved its service life；The pump housing and drive end bearing bracket adopt the quick clamp connection of rustless steel, and replacing impeller, machine envelope are convenient and swift；As shown in Figure 3: drive end bearing bracket and end cover are combined into sealing grease chamber, packaging type double mechanical seal it is provided with in grease chamber, two ends shaft installing sleeve is linked together, centre baffle plate separates, and works alone during work, though media end seal failure, atmosphere end seals without being affected, medium will not be seeped in bearing chamber and motor cavity and cause bearing, motor failure, therefore have quick and easy for installation, seal reliable feature.Being provided with sewage detection sensor in annular seal space, once there be sewage to leak in annular seal space grease chamber, after reaching certain proportion, sensor will be connected, and sends alarm signal, controls system shutdown pump power power supply, thus protecting bearing, motor therefore to damage simultaneously；Motor casing adopts aluminum hull with fin auxiliary heat dissipation；Being provided with bearing, cable connector in bonnet, cable is ready-package, easy for installation；Being covered with supporting leg after motor tail end, pump inlet flange is provided with support, and the two supports pump, and because supporting leg and support can dismount, therefore this pump is additionally operable to vertical installation.
Due to the fact that employing said structure so that this pump configuration is novel, by property and non-destructive all better, reduce rate of depreciation, there is total head No-mistake Principle characteristic, disassembling, assembling and replacing impeller, machine envelope, cable time more convenient and quicker, sealing effectiveness is better, complete machine stability is higher, the life-span is longer, mounting means is versatile and flexible.
Claims (6)
1. a centrifugal sewage pump, mainly include the pump housing, pump shaft, impeller, mechanical seal, drive end bearing bracket, motor, bonnet and control system, it is characterized in that the impeller outer end face in the impeller cavity of the described pump housing and the distance between the import hub thickness more than impeller, described impeller is by wheel hub, the impeller disk and two helical blade compositions, the described impeller disk is fixed on wheel hub one end, on the impeller disk, Circle-Array shows two helical blades, described helical blade initiating terminal is fixing with wheel hub to be connected, bottom is fixed on impeller, it is corresponding with impeller disk outer rim that the spiral cambered surface of described helical blade is crossed over three quadrant rearward ends by initiating terminal along impeller disk perficial helical.
2. a kind of centrifugal sewage pump according to claim 1, it is characterized in that the described pump housing and drive end bearing bracket link are respectively equipped with annular slot, the described pump housing blocks and fixing with annular slot through stainless steel lathe dog respectively mutually with drive end bearing bracket, described stainless steel lathe dog is to be relatively fixed by two semi-circular card hoop bodies to form, described stainless steel lathe dog is made up of locating ring, connection ring and elastic apical ring, described locating ring two ends respectively be connected that ring is vertical fixing to be connected, two connect that the corresponding inner side of the ring other end is vertical with elastic apical ring respectively fixing to be connected.
3. a kind of centrifugal sewage pump according to claim 1, it is characterized in that the pump shaft between described drive end bearing bracket and impeller is cased with end cover, described end cover and drive end bearing bracket are tightly connected and form sealing grease chamber, described Seal Oil indoor are provided with packaging type double mechanical seal, described double mechanical seal warp beam sleeve is connected with pump shaft, and the axle sleeve in the middle of described double mechanical seal is provided with baffle plate.
4. a kind of centrifugal sewage pump according to claim 1, it is characterised in that described Seal Oil indoor are provided with sewage detection sensor.
5. a kind of centrifugal sewage pump according to claim 1, it is characterised in that the motor casing of described motor is provided externally with fin.
6. a kind of centrifugal sewage pump according to claim 1, it is characterised in that be provided with supporting leg and support, described motor tail end is fixing with supporting leg top to be connected, and the flange of described pump housing entrance point is fixing with support to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732817.8A CN105736392A (en) | 2014-12-07 | 2014-12-07 | Centrifugal sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732817.8A CN105736392A (en) | 2014-12-07 | 2014-12-07 | Centrifugal sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736392A true CN105736392A (en) | 2016-07-06 |
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ID=56236396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410732817.8A Pending CN105736392A (en) | 2014-12-07 | 2014-12-07 | Centrifugal sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736392A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489408A (en) * | 2017-10-12 | 2017-12-19 | 张秀梅 | Pump declines glutinous agitator |
| CN108916063A (en) * | 2018-06-28 | 2018-11-30 | 陕西科技大学 | A kind of fibre-bearing class impurity sewage delivery pump |
| CN108916064A (en) * | 2018-06-28 | 2018-11-30 | 陕西科技大学 | A kind of sewage pump |
-
2014
- 2014-12-07 CN CN201410732817.8A patent/CN105736392A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489408A (en) * | 2017-10-12 | 2017-12-19 | 张秀梅 | Pump declines glutinous agitator |
| CN108916063A (en) * | 2018-06-28 | 2018-11-30 | 陕西科技大学 | A kind of fibre-bearing class impurity sewage delivery pump |
| CN108916064A (en) * | 2018-06-28 | 2018-11-30 | 陕西科技大学 | A kind of sewage pump |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
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| WD01 | Invention patent application deemed withdrawn after publication |