CN206816558U

CN206816558U - Centrifugal pump of horizontal axis

Info

Publication number: CN206816558U
Application number: CN201720381888.7U
Authority: CN
Inventors: 叶逢亮
Original assignee: Kunshan Environmental Protection Technology Co Ltd Longente
Current assignee: Kunshan Environmental Protection Technology Co Ltd Longente
Priority date: 2017-01-10
Filing date: 2017-04-12
Publication date: 2017-12-29
Anticipated expiration: 2027-04-12
Also published as: CN206682034U; CN106870444A

Abstract

The utility model discloses a kind of centrifugal pump of horizontal axis, it includes motor, the pump housing and the base for fixing the motor and the pump housing, the motor is fixedly connected with the pump housing by being connected foot stool, the base is fixedly connected on the connection foot stool, the motor includes motor shaft, the pump housing includes pump housing bonnet, the motor shaft sequentially passes through the connection foot stool and the pump housing bonnet, covered after the pump housing and be also fixedly connected with cooling device, coolant in cooling device can be used for cooling motor shaft machine sealing mechanism, when the utility model can avoid not having liquid in the pump housing die cavity of centrifugal pump, machine sealing mechanism steep temperature rise due to a lack of cooling water, too high temperature is damaged to caused by machine seal structure.

Description

Centrifugal pump of horizontal axis

Technical field

Centrifugal pump field is the utility model is related to, more particularly, to a kind of centrifugal pump of horizontal axis of idle running.

Background technology

Centrifugal pump is to complete the conveying of fluid by the rotation of centrifugal force drive fluid caused by the impeller of rotary pump, main To be made up of motor, impeller, the pump housing and gland seal device.In use, by connection motor impeller by the liquid inside pumping from Outlet is transported in the presence of the heart, then pumping die cavity forms vacuum and Inlet fluid is drawn into formation circulation inside pumping again. In use because the friction of machine envelope can steeply rise own temperature.And the liquid of pumping die cavity can close to machine Cooling effect, so as to protect machine envelope to avoid damaging.But pumping entrance is it sometimes appear that blocking or entering empty in use Gas, cause there is no liquid in pumping die cavity, pumping machine envelope friction in the case of aneroid dry run is rapidly heated, in very short time It is interior to damage, cause leakage not use.

Existing Patent No. 201520089571.7, patent name are metal horizontal centrifugal pump, disclose the pump housing, leaf Wheel, the mechanical sealing mechanism in pump cover, and pump cover, be connected to the machine sealed cover of pump cover rear end, be bolted to it is described Outer press cover at the open rearward end of the pump housing and the pump shaft being connected through machine sealed cover and pump cover with the impeller forward, are arranged at pump Mechanical sealing mechanism in the central cavity of lid, it is bolted to the machine sealed cover of pump cover rear end, is bolted to Outer press cover at the open rearward end of the pump housing and the pump shaft being connected through machine sealed cover and pump cover with the impeller forward, it is described Mechanical sealing mechanism includes sleeve, spring, pressure ring, machine envelope stationary ring, machine envelope rotating ring and rotating seat.Although the utility model patent solves Sealing property certainly, and decay resistance, but and have how the pumping for solving to dally avoids machine envelope temperature arrising caused by friction close to machinery The damage problem of sealing mechanism, and it is wasting manpower and material resources' cost of idleness again to change mechanical sealing mechanism, therefore it is such to be badly in need of solution Problem.

Utility model content

The defects of the purpose of this utility model is to overcome prior art, there is provided a kind of centrifugal pump of horizontal axis, by horizontal Cooling device is set on centrifugal pump, the coolant in cooling device is incorporated between rotating ring and stationary ring, to avoid centrifuge empty Rub the damage for causing machine envelope to be brought rapidly up and cause machine to seal when turning, between rotating ring and stationary ring.

To achieve the above object, the utility model proposes following technical scheme：It includes motor, the pump housing and for fixing The base of motor and the pump housing is stated, the motor is fixedly connected with the pump housing by being connected foot stool, and the base is fixedly connected on On the connection foot stool, the motor includes motor shaft, and the pump housing includes pump housing bonnet, and the motor shaft sequentially passes through described Foot stool and the pump housing bonnet are connected, organic sealing mechanism is arranged on the motor shaft, the machine sealing mechanism includes rotating ring and stationary ring, The stationary ring is covered after being fixed on the pump housing by gland, and the rotating ring is fixed on the motor shaft, the rotating ring and quiet Friction pair is formed between ring, the centrifugal pump also includes being used for the cooling device for cooling down the friction pair, and the cooling device is worn Cross the gland and the stationary ring.

Preferably, the cooling device rubs including the storage bin for being used to load coolant and the connection storage bin with described Secondary cooling pipe is wiped, the storage bin is fixed on the connection foot stool.

Preferably, the stationary ring on the gland with being equipped with least one cooling for axially penetrating through the stationary ring and gland Groove, the rotating ring are provided with the U-type groove of half opening, and the U-type groove open end is to the stationary ring side.

Further, it is fixed with impeller on the motor shaft.

Preferably, described rotating ring one end has the spring being sheathed on the motor shaft, and the other end of the spring is provided with Locating ring.

Preferably, the locating ring is provided with trundle, for the rotating ring to be fixed on into the motor shaft.

Preferably, the gland is provided with stop pin, for being covered after gland is fixed on into the pump housing.

Preferably, the gland will be provided with the first sealing ring with bonnet.

Preferably, the second sealing ring is provided between the stationary ring and the gland.

The beneficial effects of the utility model are：When can avoid not having in the pump housing of centrifugal pump liquid, rotating ring and stationary ring because Lack cooling water and steep temperature rise, too high temperature are configured to damage to machine sealed knot.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model centrifugal pump of horizontal axis cut-away section；

Fig. 2 is the mplifying structure schematic diagram of a in the utility model centrifugal pump of horizontal axis Fig. 1；

Fig. 3 is the structural scheme of mechanism of another angle of the utility model centrifugal pump of horizontal axis.

Reference：

1st, motor, 11, motor shaft, 12, impeller, 13, gland, 131, stop pin, 14, stationary ring, 141, cooling bath, 15, dynamic Ring, 151, U-type groove, 16, spring, 17, locating ring；

2nd, the pump housing, 21, pump housing bonnet, 22, inlet, 23, liquid outlet, 24, pump housing protecgulum, 25, pump housing die cavity；

3rd, foot stool is connected；

4th, cooling device, 41, cooling pipe, 42, storage bin；

5th, base, 6, preceding axle envelope.

Embodiment

Below in conjunction with accompanying drawing of the present utility model, the technical scheme of the utility model embodiment is carried out clear, complete Description.

With reference to shown in Fig. 1 Fig. 3, the centrifugal pump of horizontal axis disclosed in the utility model, including motor 1, the pump housing 2, base 5 and company Pin frame 3, motor 1 are fixedly connected on one end of the pump housing 2 by connecting foot stool 3, naturally it is also possible to are fixed using other modes Connect motor and the pump housing, base 5 is fixed on the lower section for connecting foot stool 3 as the carrier of support fixation, for by motor 1 and The pump housing 2 is stably fixed on ground.The pump housing 2 includes pump housing protecgulum 24, pump housing bonnet 21, inlet 22 and liquid outlet 23, enters Liquid mouth 22 is arranged on pump housing protecgulum 24, and liquid outlet 23 is arranged on the pump housing 2, and during use, motor 1 is driven inside the pump housing 2 Impeller 12 quickly rotate, make to form vacuum in pump housing die cavity 25, so that outside liquid is rapid by inlet 22 Flow into pump housing die cavity 25, with the continuous rotation of impeller 12, liquid flows from the liquid outlet 23 on the pump housing 2 under pressure Go out, and then constantly circulation substitutes liquid in pump housing die cavity 25.

As shown in figure 1, motor 1 includes motor shaft 11, organic sealing mechanism is arranged on motor shaft 11, motor shaft 11 passes through the pump housing Bonnet 21 enters inside pump housing die cavity 25, and impeller 12 is fixedly mounted on the front end of motor shaft 11.And machine sealing mechanism is made as sealing Mechanism is set on motor shaft 11 and seals motor shaft 11 and the junction of pump housing bonnet 21.

As shown in Fig. 2 machine sealing mechanism includes the rotating ring 15 being set on motor shaft 11 and stationary ring 14 and is fixed on stationary ring The gland 13 of 14 peripheries, gland 13 are fixedly connected with both with stationary ring 14 by the cooperation of concaveconvex structure, and gland 13 is provided with anti- Ship and resell on another market 131, stop pin 131 is fixedly connected with pump housing bonnet 21, so as to which stationary ring 14 is fixed on pump housing bonnet 21.

Preferably, gland 13 is provided with the first sealing ring 19, the stationary ring 14 and the gland with the junction of pump housing bonnet 21 The second sealing ring 18 is provided between 13.

As depicted in figs. 1 and 2, the one end of rotating ring 15 fits to form friction pair with the stationary ring 14, and the other end is provided with positioning Ring 17, locating ring 17 are connected with the spring 16 that rotating ring 15 passes through, and the locating ring 17 is provided with trundle (not shown), the biography Dynamic pin is securable on motor shaft 11, or is fixed on impeller 12, so that rotating ring 15 is with the synchronous rotary of motor shaft 11；Dynamic Ring 15 may also set up sealing ring with the joint of motor shaft 11, and the axle envelope 6 before the periphery of spring 16 is settable, rotating ring 15 is in locating ring 17, with being fitted under spring 16 and fluid pressure with stationary ring 14, form the gap that naked eyes are difficult to observe, when the sealing medium such as pump housing Liquid in die cavity 25, when liquid passes through this gap, very thin liquid film can be formed, liquid film enables end face to lubricate, and liquid film is with moving The viscous force that 14 two end faces of ring 15 and stationary ring are formed prevents liquid to flow outwardly.

Rotating ring 15 with 14 continuous temperature arrising caused by friction of stationary ring forms frictional heat during running at high speed, and frictional heat passes through pump housing die cavity Liquid cooling in 25.And in order to avoid that during no liquid, can not cool in pump housing die cavity 25 to frictional heat, the utility model is also set A cooling device being fixed on the pump housing 24 is put.

A preferred embodiment of the present utility model, as shown in Fig. 2 the cooling device 4 is fixed at connection foot stool 3, The other positions of its centrifugal pump can also be fixed on, cooling device 4 includes storage bin 42 and cooling pipe 41, the cooling tube The one end of road 41 is connected to the lower end of storage bin 42, and the other end is connected with the gland 13, and case lid can be provided with storage bin 42, is kept away Exempt to block cooling pipe 41 into impurity, the coolant in storage bin 42 under ambient pressure and Action of Gravity Field by passing through cooling Pipeline 41 flows downward, in order to allow the liquid to flow into rotating ring 15 and the friction vice division chief of the formation of stationary ring 14, in gland 13 and stationary ring Opened up on 14 one axially through cooling bath 141, the liquid outlet of cooling pipe 41 connects with the inlet of cooling bath 141, quiet The U-type groove 151 of half opening is offered on ring 14, the opening of the U-type groove 151 does not have towards stationary ring 14 when in pump housing die cavity 25 During liquid, in the presence of ambient pressure, the coolant in storage bin 42 reaches friction by cooling pipe 41 and cooling bath 141 Pair, frictional heat cools between rotating ring 15 and stationary ring 14 in time, can not only preferably drain for friction pair and will not destroy again The sealing effectiveness of sealing mechanism.

Preferably, cooling bath 141 and U-type groove 151 can be arranged as required to one or more.

The rotating ring 15 that certain cooling device 4 of the present utility model directly can also stretch into cooling pipe 41 inside the pump housing 2 Between stationary ring 14, without setting cooling bath 141 and U-type groove 151.And cooling bath 141 of the present utility model does not also limit to In the mechanical seal installed in this type, other kinds of mechanical seal can also be arranged on, more coiling machine envelopes such as in bulk, rubber Glue bellows type mechanical seal, tetrafluoro bellows type mechanical seal, metal bellows machine envelope etc..

The utility model has mechanical performance good seal, and when preventing that centrifugal pump from dallying, the friction between rotating ring and stationary ring When temperature rises suddenly, it cannot cool down and damage machine sealing mechanism.

Technology contents and technical characteristic of the present utility model are had revealed that as above, but those skilled in the art still may be used A variety of replacements and modification without departing substantially from the utility model spirit can be made based on teaching of the present utility model and announcement, therefore, this Utility model protection scope should be not limited to the content disclosed in embodiment, and should include various without departing substantially from replacement of the present utility model And modification, and covered by present patent application claim.

Claims

1. a kind of centrifugal pump of horizontal axis, it includes motor, the pump housing and the base for fixing the motor and the pump housing, the motor with The pump housing is fixedly connected by connecting foot stool, and the base is fixedly connected on the connection foot stool, it is characterised in that：The motor Including motor shaft, the pump housing includes pump housing bonnet, and the motor shaft sequentially passes through the connection foot stool and the pump housing bonnet, Organic sealing mechanism is arranged on the motor shaft, the machine sealing mechanism includes rotating ring and stationary ring, and the stationary ring is fixed on by gland Covered after the pump housing, the rotating ring is fixed on the motor shaft, forms friction pair between the rotating ring and stationary ring, it is described from Heart pump also includes being used for cooling down the cooling device of the friction pair, and the coolant in the cooling device passes through the gland and institute State stationary ring.

2. centrifugal pump of horizontal axis according to claim 1, it is characterised in that：The cooling device includes being used to load coolant Storage bin and the connection storage bin and the friction pair cooling pipe, the storage bin is fixed on the connection foot stool On.

3. centrifugal pump of horizontal axis according to claim 2, it is characterised in that：The stationary ring on the gland with being equipped with least One axially penetrates through the cooling bath of the stationary ring and gland, and the rotating ring is provided with the U-type groove of half opening, the U-type groove openend Towards the stationary ring side.

4. according to the centrifugal pump of horizontal axis described in claim 1,2 or 3, it is characterised in that：Impeller is fixed with the motor shaft.

5. centrifugal pump of horizontal axis according to claim 1, it is characterised in that：Described rotating ring one end, which has, is sheathed on the motor Spring on axle, the other end of the spring are provided with locating ring.

6. centrifugal pump of horizontal axis according to claim 5, it is characterised in that：The locating ring is provided with trundle, for inciting somebody to action The rotating ring is fixed on the motor shaft.

7. centrifugal pump of horizontal axis according to claim 1, it is characterised in that：The gland is provided with stop pin, for that will press Lid covers after being fixed on the pump housing.

8. centrifugal pump of horizontal axis according to claim 1, it is characterised in that the gland will be provided with the first sealing ring with bonnet.

9. centrifugal pump of horizontal axis according to claim 1, it is characterised in that：Second is provided between the stationary ring and the gland Sealing ring.