CN208546316U

CN208546316U - A kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump

Info

Publication number: CN208546316U
Application number: CN201821002713.1U
Authority: CN
Inventors: 潘旭辉; 许玉然; 黄晓燕; 孙勇
Original assignee: Jilin Forest Industry Group Quanyangquan Beverage Co Ltd
Current assignee: Jilin Forest Industry Group Quanyangquan Beverage Co Ltd
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2019-02-26
Anticipated expiration: 2028-06-27

Abstract

The utility model discloses a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pumps, including connecting first bearing cabinet, the first pump cover, the first seal assembly, the feed liquor pump housing, impeller assembly, Pump for giving-out body, the second pump cover, the second seal assembly, balanced component and second bearing cabinet on center shaft；It further include the air-cooled structure being arranged on second bearing cabinet and central axis；Air-cooled structure includes the fan blade of connection on center shaft, and the housing for being used to block fan blade being connected on second bearing cabinet；Balanced component include set on center shaft and the balance inner sleeve that is arranged between impeller assembly and the second pump cover, and balance housing；Balance housing include the metallic sheath being connected on Pump for giving-out body, and be connected to it is on metallic sheath inner wall, for balance inner sleeve clearance fit graphite cannula；Groove there are four being also set up on the graphite cannula inner wall；It can reduce the temperature of second bearing cabinet, operational reliability is more preferable.

Description

A kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump

Technical field

The utility model relates to water pump technology used in drinking water production, specifically a kind of drinking water production With light-duty vertical type centrifugal multistage pump multiple centrifugal pump.

Background technique

It in drinking water producing procedure, needs to convey water source, for example water source is transported in purification filtering equipment； It usually can all use and arrive water pump；Due to purification filtering equipment, some height are higher or distance farther out, so needing using lift Higher water pump, therefore will use light-duty vertical type centrifugal multistage pump multiple centrifugal pump；In actual use, due to light-duty vertical type centrifugal multistage pump multiple centrifugal pump It needs to use for a long time, therefore higher to the stability requirement of operation；Can work that stable depend on several factors, such as Temperature at bearing, the balance of impeller, the balance of pressure, the temperature etc. of mechanical seal；Traditional light-duty vertical type centrifugal multistage pump multiple centrifugal pump, When controlling the temperature of temperature and mechanical seal at bearing, generallys use collet or increase radiating ribs, collet needs are passed through Recirculated cooling water is the need to ensure that the leakproofness of collet, and structure becomes complicated although also can be good at cooling down；? In terms of the balance of pressure, balancing frame complex equilibrium set is generallyd use, balancing frame is easy to appear and is crushed to death on balance set, seriously When, it will cause motor overload, poor reliability.

Utility model content

Aiming at the defects existing in the prior art, the utility model aim is to provide a kind of drink of good reliability With aquatic production light-duty vertical type centrifugal multistage pump multiple centrifugal pump, to solve the above technical problem.

The utility model technical solution used for the above purpose is: a kind of drinking water production light-duty vertical type is more Grade centrifugal pump, including connecting first bearing cabinet on center shaft, the first pump cover being connected on first bearing cabinet, connection The first seal assembly between central axis and the first pump cover is connected on the first pump cover and feed liquor of set on center shaft The pump housing, the impeller assembly being connected on the feed liquor pump housing and central axis are connected on impeller assembly and cover on center shaft Pump for giving-out body, the second pump cover being connected on Pump for giving-out body, the second seal assembly being connected between the second pump cover and central axis, Balanced component, and the second bearing cabinet being connected on the second pump cover are set between Pump for giving-out body and the second pump cover；It is special Sign is: further including the air-cooled structure being arranged on second bearing cabinet and central axis；The air-cooled structure includes in being connected to Fan blade in mandrel, and the housing for being used to block fan blade being connected on second bearing cabinet；The balanced component includes Set on center shaft and the balance inner sleeve that is arranged between impeller assembly and the second pump cover, and balance housing；Described Balance housing include the metallic sheath being connected on Pump for giving-out body, and be connected to it is on metallic sheath inner wall, be used for and balance inner sleeve The graphite cannula of clearance fit；Groove there are four being also set up on the graphite cannula inner wall.

Preferably, the first bearing cabinet is identical with second bearing body structure, all includes cabinet, is connected to cabinet Bearing between central axis, connect on center shaft for positioning the locking nut of bearing, and be connected to second bearing It is used to push down gland bearing and for sealing on cabinet.

Preferably, first pump cover and the second pump cover structure are identical, all include pump cover ontology, are connected to pump cover ontology On for pump cover ontology formed collet cavity baffle, and be connected on pump cover ontology and with collet cavity phase Logical circulating water line.

Preferably, first seal assembly and the second seal component architecture are identical, all include covering on center shaft Axle sleeve, the sealing gland being connected on the first pump cover or the second pump cover, and cover on axle sleeve and be located in sealing gland With the mechanical seal between the first pump cover or the second pump cover.

Preferably, the impeller assembly includes the impeller of set on center shaft, is connected to the feed liquor pump housing and Pump for giving-out body Between middle section, and be connected on middle section and with impeller cooperation guide vane.

Preferably, fluting cylindrical thread pin used for positioning is additionally provided between the metallic sheath and graphite cannula.

The utility model has the beneficial effects that a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump, is provided with air-cooled knot Structure is rotated together with central axis by fan blade, increases the air velocity at second bearing cabinet, can more rapidly taken away Heat at second bearing cabinet, to have the function that reduce bearing temperature, and easy for assemble or unload；It is provided with balance group Part, including balance inner sleeve and balance housing, balance inner sleeve by key and center axis connection, and be located in impeller and axle sleeve it Between, it can be with center axis rotation, balancing housing includes metallic sheath and graphite cannula, with reeded graphite cannula, can prevent from putting down It is stuck between the inner sleeve that weighs and balance housing, and by being provided with gap between balance inner sleeve, it can limit at Pump for giving-out body The regurgitant volume for having press liquid, play the role of balance pressure, improve operational reliability.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the part A partial enlarged view in the utility model Fig. 1；

Fig. 3 is the part B partial enlarged view in the utility model Fig. 1；

Fig. 4 is the C portion partial enlarged view in the utility model Fig. 1；

Fig. 5 is the structural schematic diagram of the utility model balancing frame in the prior art and balance set；

In figure: 1. central axises, 2. first bearing cabinets, 3. first pump covers, 4. first seal assemblies, the 5. feed liquor pump housings, 6. Impeller assembly, 7. Pump for giving-out bodies, 8. second pump covers, 9. second seal assemblies, 10. balanced components, 11. second bearing cabinets, 12. Fan blade, 13. housings, 14. balance inner sleeves, 15. metallic sheaths, 16. graphite cannulas, 17. grooves, 18. fluting cylindrical thread pins, 201. casees Body, 202. bearings, 203. locking nuts, 204. glands, 301. pump cover ontologies, 302. collet cavitys, 303. baffles, 304. circulations Water lines, 401. axle sleeves, 402. sealing glands, 403. mechanical seals, 601. impellers, 602. middle sections, 603. guide vanes.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment；

Embodiment one:

See Fig. 1, Fig. 2, Fig. 3, Fig. 4；A kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump, including it is connected to central axis The first pump cover 3 on first bearing cabinet 2 is bolted in first bearing cabinet 2 on 1, is connected to central axis 1 and The first seal assembly 4 between one pump cover 3 is bolted on the first pump cover 3 and covers the feed liquor on central axis 1 The pump housing 5, the impeller assembly 6 being connected on the feed liquor pump housing 5 and central axis 1 are connected on impeller assembly 6 and cover in central axis Pump for giving-out body 7 on 1, the second pump cover 8 being connected on Pump for giving-out body 7, be connected between the second pump cover 8 and central axis 1 The balanced component 10 between Pump for giving-out body 7 and the second pump cover 8 is arranged in two seal assemblies 9, and is connected on the second pump cover 8 Second bearing cabinet 11；The first bearing cabinet 2 is identical with 11 structure of second bearing cabinet, all includes cabinet 201, even The bearing 202 between cabinet 201 and central axis 1 is connect, the locking nut for being used to position bearing 202 being connected on central axis 1 203, and be connected on second bearing cabinet 11 and be used to push down gland 204 bearing 202 and for sealing；It is described The first pump cover 3 it is identical with 8 structure of the second pump cover, all include pump cover ontology 301, be welded on pump cover ontology 301 for Pump cover ontology 301 formed collet cavity 302 baffle 303, and be connected on pump cover ontology 301 and with collet cavity 302 circulating water lines 304 communicated；First seal assembly 4 is identical with 9 structure of the second seal assembly, all includes covering Axle sleeve 401 on central axis 1, the sealing gland 402 being connected on the first pump cover 3 or the second pump cover 8, and cover in axle sleeve On 401 and the mechanical seal 403 that is located between sealing gland 402 and the first pump cover 3 or the second pump cover 8；The leaf Wheel assembly 6 includes covering the impeller 601 on central axis 1, is located between the feed liquor pump housing 5 and Pump for giving-out body 7 by seam allowance Section 602, and guide vane 603 that is being connected on middle section 602 and cooperating with impeller 601；Middle section 602 is with the feed liquor pump housing 5 and out Between liquid pump body 7, between the first pump cover 3 and the feed liquor pump housing 5, between the first seal assembly 4 and the first pump cover 3, Pump for giving-out body 7 with Sealing element is both provided between second pump cover 8, between the second pump cover 8 and the second seal assembly 9；It is logical by circulating water line 304 Enter recirculated water, into collet cavity 302, takes away the heat at the first seal assembly 4 and the second seal assembly 9, ensure that machinery Sealing 403 can be stable work；

It further include the air-cooled structure being arranged on second bearing cabinet 11 and central axis 1；The air-cooled structure includes connecting The fan blade 12 on central axis 1 is connect, and the housing 13 for being used to block fan blade 12 being connected on second bearing cabinet 11；It is described Balanced component 10 include cover in balance inner sleeve on central axis 1 and being arranged between impeller assembly 6 and the second pump cover 8 14, and balance housing；The balance housing includes the metallic sheath 15 being connected on Pump for giving-out body 7, and is connected to metal Cover it is on 15 inner walls, for balance 14 clearance fit of inner sleeve graphite cannula 16；It is additionally provided on 16 inner wall of graphite cannula Four grooves 17；Fluting cylindrical thread pin 18 used for positioning is additionally provided between the metallic sheath 15 and graphite cannula 16；? In actual use, bearing 202 uses two deep groove ball bearings；Mechanical seal 403 uses single end face；The number of 6 component of impeller assembly Amount is matched according to lift；Motor is horizontal, the asynchronous motor or synchronous motor of cage rotor, such as 75KW-2P；Fan blade 12 use plastic material, and shape is similar to the electric fan blade of three blades, is connected by key on central axis 1, and pass through card Spring positioning；Housing 13 uses sheet metal, and shape is similar to basin shape, several holes are additionally provided on housing 13, there is the work of ventilation With；According to proper tolerances clearance fit between graphite cannula 16 and metallic sheath 15, then pass through fluting 18 locking positioning of cylindrical thread pin； It drives central axis 1 to rotate by motor, so that fan blade 12 rotates, can more rapidly take away the heat at second bearing cabinet 11 Amount, to have the function that reduce by 202 temperature of bearing；By motor drive central axis 1 rotate, impeller 601 act so that water by Enter at the feed liquor pump housing 5, is exported at Pump for giving-out body 7, it is high since the pressure at the feed liquor pump housing 5 is less than the pressure at Pump for giving-out body 7 Pressure pushes balanced component 10 by Fig. 3 arrow direction, so that impeller 601 is under pressure to movement at the feed liquor pump housing 5, if this When pressure it is excessive, it is possible to cause the 601 dieback feed liquor pump housing 5 of impeller, bearing 202 damages, and passes through balance inner sleeve 14 and balance external Set, which is formed, to be stopped, and there are gap, gap 0.1-0.2mm is stopped, and reduces the water for flowing back into 601 back of impeller Amount, reduces partial pressure；Band prevents stuck with balance inner sleeve 14 there are four the graphite cannula 16 of groove 17；May be used also To be provided with one section of relief tube connecting with the feed liquor pump housing 5 on Pump for giving-out body 7, so that the high pressure water at Pump for giving-out body 7 is direct The entrance for flowing back into the impeller 601 at the feed liquor pump housing 5, improves reliability of operation；

In Fig. 5, including the balance set 1001 being connected on Pump for giving-out body 7, and the balancing frame being connected on central axis 1 1002, when the pressure by arrow direction, so that balancing frame 1002 is bonded to balance set 1001, it is more likely that cause, balance The first hard layer 1003 on disk 1002 is adjacent to the second hard layer 1004 on balance set 1001, stuck.

Working principle of the utility model is: the fan blade 12 being utilized on air-cooled structure is rotated with central axis 1, the is increased Air velocity at two bearing housings 11 can more rapidly take away the heat at second bearing cabinet 11, to reach drop The effect of low 202 temperature of bearing；Balance inner sleeve 14 is utilized and balance housing forms and stops, reduction flows back into 601 back of impeller Water amount, reduce partial pressure, 601 entrance of impeller flowed back by relief tube convenient for water, improves reliability of operation.

In the utility model description, it is to be understood that term " between ", the indicating positions such as "upper" or positional relationship be Based on positional relationship described in attached drawing, it is merely for convenience of description the utility model or simplifies description, rather than instruction must have The specific orientation having；Operating process described in embodiment is not absolute use step, in actual use, can be done corresponding Adjustment.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims

1. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump, including the first bearing cabinet being connected on central axis (1) (2), the first pump cover (3) being connected on first bearing cabinet (2), be connected between central axis (1) and the first pump cover (3) One seal assembly (4) is connected on the first pump cover (3) and covers the feed liquor pump housing (5) on central axis (1), be connected into Impeller assembly (6) on liquid pump body (5) and central axis (1) is connected on impeller assembly (6) and covers on central axis (1) Pump for giving-out body (7), the second pump cover (8) being connected on Pump for giving-out body (7), be connected to the second pump cover (8) and central axis (1) it Between the second seal assembly (9), balanced component (10) between Pump for giving-out body (7) and the second pump cover (8) is set, and connects Second bearing cabinet (11) on the second pump cover (8)；It is characterized in that: further including being arranged at second bearing cabinet (11) and center Air-cooled structure on axis (1)；The air-cooled structure includes the fan blade (12) that is connected on central axis (1), and is connected to the The housing (13) for being used to block fan blade (12) on two bearing housings (11)；The balanced component (10) includes covering in central axis (1) balance inner sleeve (14) on and being arranged between impeller assembly (6) and the second pump cover (8), and balance housing；Institute The balance housing stated includes the metallic sheath (15) that is connected on Pump for giving-out body (7), and be connected to it is on metallic sheath (15) inner wall, For the graphite cannula (16) with balance inner sleeve (14) clearance fit；Groove there are four being also set up on described graphite cannula (16) inner wall (17)。

2. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterized in that: described the One bearing housing (2) is identical with second bearing cabinet (11) structure, all includes cabinet (201), is connected to cabinet (201) and center Bearing (202) between axis (1), the locking nut (203) for being used to position bearing (202) being connected on central axis (1), and It is connected on second bearing cabinet (11) and is used to push down gland (204) bearing (202) and for sealing.

3. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterized in that: described the One pump cover (3) is identical with the second pump cover (8) structure, all includes pump cover ontology (301), the use being connected on pump cover ontology (301) In forming the baffle (303) of collet cavity (302) with pump cover ontology (301), and it is connected on pump cover ontology (301), simultaneously And the circulating water line (304) communicated with collet cavity (302).

4. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterized in that: described the One seal assembly (4) is identical with the second seal assembly (9) structure, all includes covering the axle sleeve (401) on central axis (1), connects Sealing gland (402) on the first pump cover (3) or the second pump cover (8), and cover on axle sleeve (401) and be located in Mechanical seal (403) between sealing gland (402) and the first pump cover (3) or the second pump cover (8).

5. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterized in that: the leaf Wheel assembly (6) includes covering the impeller (601) on central axis (1), is connected between the feed liquor pump housing (5) and Pump for giving-out body (7) Middle section (602), and guide vane (603) be connected on middle section (602) and with impeller (601) cooperation.

6. a kind of drinking water production light-duty vertical type centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterized in that: the gold Belong to and is additionally provided with fluting cylindrical thread pin (18) used for positioning between set (15) and graphite cannula (16).