CN208416967U - Simplify structure centrifugal pump - Google Patents
Simplify structure centrifugal pump Download PDFInfo
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- CN208416967U CN208416967U CN201821147319.7U CN201821147319U CN208416967U CN 208416967 U CN208416967 U CN 208416967U CN 201821147319 U CN201821147319 U CN 201821147319U CN 208416967 U CN208416967 U CN 208416967U
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Abstract
The utility model relates to one kind to simplify structure centrifugal pump, including horizontal pump shaft, pump shaft is equipped with single-suction (single-in let) impeller and balancing drum, balancing drum is located at the side of single-suction (single-in let) impeller water outlet, it is equipped with mechanical seal between pump case both ends and pump shaft, the discharge higher-pressure region being connected to the side of single-suction (single-in let) impeller water outlet and the sucking low-pressure area being connected to the side that single-suction (single-in let) impeller enters water are formed in pump case；Formation sucking low-pressure area and separate single-suction (single-in let) impeller enters to be formed with the first seal area between the housing portion of side of water and the mechanical seal of respective side, is formed with the second seal area between the mechanical seal of the side of balancing drum and single-suction (single-in let) impeller water outlet；The anti-leak face of two mechanical seals is located in corresponding seal area；First seal area is connected to the second seal area by external balance pipe；Second seal area is connected to discharge higher-pressure region, and the first seal area is connected to sucking low-pressure area.Balance pipe and the unified use of machine sealing flushing pipeline, structure are more simplified, rationally utilize Fluid pressure, improve the whole efficiency of pump by the utility model.
Description
Technical field
The utility model belongs to non-positive-displacement pump technical field, and in particular to one kind simplifies structure centrifugal pump.
Background technique
Centrifugal pump is the pump for carrying out trandfer fluid by the centrifugal force generated when impeller rotation, and fluid is inhaled into from water inlet, from
Water outlet is pumped out.When work, pump shaft drives the impeller high speed rotation in pump case, the fluid in pump case under the action of the centrifugal force by
Discharge runner to impeller outer edge, through pump case is got rid of to flow into pressure pipe road and pump out, at impeller center, then shape due to fluid is thrown out of
At negative pressuren zone, external fluid is inhaled into from water inlet under pressure, and the negative pressure in impeller axle center is constantly flowed to through suction passage
Area, i.e. impeller enter the side of water, and impeller can not stall, so that fluid is constantly inhaled into and pumps out under the action of impeller, reach
The purpose of trandfer fluid.Impeller is installed on pump shaft, and the reaction force of the flow direction and fluid that are inhaled into according to fluid can make
Power of the impeller by the side direction for entering water towards impeller, i.e. pump shaft need to bear impeller work bring axial force, for balance
The axial force suffered by pump shaft is typically employed in the structure type that balancing drum or balancing frame are connected on pump shaft, pumps in fluid
Making balancing drum two sides by the construction of pump case in the process, there are fluid pressure differentials to make balancing drum be entered water by far from impeller
The power of one side direction simultaneously passes to pump shaft to play balanced action.To make fluid flow to keep the pressure difference, it is being centrifuged
With regard to a typically seen balance pipe on pump, it is used to connect relatively low pressure area and the suction passage of pump of balancing drum side, wherein flat
Weigh that the Fluid pressure in the relatively low pressure area of drum side is greater than the Fluid pressure in suction passage so that fluid is from the phase
Suction passage is flowed to through balance pipe to low-pressure area, the relevant technologies refer in CN206874490U, CN206377073U.
Other set pipeline can also be usually seen on centrifugal pump --- machine sealing flushing pipeline.Centrifugal pump is used for pump flow
Body has to prevent fluid from leaking between pump shaft and pump case, generallys use mechanical seal (abbreviation machine envelope) to realize, and machine
Tool sealing includes two anti-leak faces of opposite sliding fitting, which needs to rinse during the work time cooling, thus need from
Machine sealing flushing pipeline is set in heart pump.The pipeline quote extraneous pressure water source to machine seal two anti-leak faces of opposite sliding fitting into
Row rinses cooling；Particularly, when on centrifugal multistage pump multiple centrifugal pump, it can choose the suitable impeller of level-one discharge Fluid pressure, at it
Aperture draws pressure water source to be used for machine sealing flushing on corresponding discharge runner (pump case), removes the trouble for quoting external water source from,
It is corresponding to cause certain fluid energy losses.
On existing centrifugal pump, balance pipe and machine sealing flushing pipeline are all connected to pump above and work independently, and tie
Structure is more complicated, and the balance pipe to work independently makes fluid flow to suction passage from the direct pressure release in relatively low pressure area, there is also
Fluid energy losses.And people are still used to pump clear water liquid or the stream without solid particulate matter when most of using pump
Dynamic medium, the fluid of pumping can achieve the requirement for machine sealing flushing, it is further contemplated that by balance pipe and machine envelope punching
Pipeline is washed to merge so that structure is more simplified.
Summary of the invention
For the above-mentioned deficiency of the prior art, the technical problem to be solved by the present invention is to provide one kind simplify structure from
Heart pump avoids being separately connected the problem that balance pipe and machine sealing flushing pipeline cause structure more complicated on centrifugal pump, obtains conjunction
Manage the effect using Fluid pressure to reduce fluid energy losses, structure is more simplified.
In order to solve the above technical problems, the utility model adopts the following technical solution:
Structure centrifugal pump is simplified, including horizontal pump shaft, the pump shaft is equipped with single-suction (single-in let) impeller and balancing drum, the balance
Drum is located at the side of single-suction (single-in let) impeller water outlet, and the single-suction (single-in let) impeller and balancing drum are respectively positioned in pump case, and the pump case is along pump shaft axial direction
Both ends and the pump shaft between be respectively equipped with mechanical seal, be formed in the pump case with the single-suction (single-in let) impeller water outlet side
The discharge higher-pressure region of connection and the sucking low-pressure area being connected to the side that single-suction (single-in let) impeller enters water, shape between the balancing drum and pump case
Small―gap suture runner is discharged at having；Formed it is described sucking low-pressure area and far from single-suction (single-in let) impeller enter water side housing portion with it is right
Answer and be formed with the first seal area between the mechanical seal of side, the balancing drum and single-suction (single-in let) impeller water outlet side mechanical seal it
Between be formed with the second seal area；Two anti-leak faces of the respective opposite sliding fitting of two mechanical seals are located at corresponding seal area
It is interior；First seal area is connected to the second seal area by external balance pipe；Second seal area is small by the water outlet
Gap runner is connected to discharge higher-pressure region so that fluid can flow in the second seal area and discharge higher-pressure region from discharge higher-pressure region
Fluid pressure be greater than the second seal area in Fluid pressure, first seal area with suck low-pressure area be connected to.
Balance pipe and machine sealing flushing pipeline are unified for " external balance pipe " by the centrifugal pump of the utility model, eliminate one
Exterior line simplifies the structure of pump more, reduces manufacturing cost；Second seal area is the relatively low pressure of former balancing drum side
Area, flushing of the Fluid pressure for machine envelope while guaranteeing balancing axial thrust function in the area Shi Gai is cooling, avoids fluid
Direct pressure release, which flows into suction passage, has fluid energy losses, Fluid pressure is utilized rationally to also just improve pump
Efficiency.The source for equally also ensuring machine sealing flushing pressure water removes from and quotes the external water source trouble cooling for machine envelope；It is special
Be not on pump case aperture take the centrifugal multistage pump multiple centrifugal pump of machine sealing flushing water, both simplified its structure, it is thus also avoided that aperture water intaking
Caused by fluid energy losses.
In use, fluid is inhaled into from the water inlet of pump, sucked through sucking low-pressure area by impeller, then through discharge higher-pressure region
It is pumped out from water outlet；Wherein, in discharge higher-pressure region segment fluid flow also through the water outlet small―gap suture runner between balancing drum and pump case
Into the second seal area, the Fluid pressure in the second seal area is less than the Fluid pressure of discharge higher-pressure region, passes through the second seal area
With the pressure difference of discharge higher-pressure region, make balancing drum pass to pump shaft far from impeller enter water a side direction power with play balance make
With；Second seal area and the first seal area are connected to by external balance pipe, and Fluid pressure is identical；Pass through the overcurrent of control connection runner
Amount can make the Fluid pressure sucked in low-pressure area less than the Fluid pressure of the first seal area, and the fluid in the second seal area is through outer
After portion's balance pipe, the first seal area, sucking low-pressure area is returned, during fluid flows through the second seal area, the first seal area,
Realize cooling for two anti-leak faces of the opposite sliding fitting to machine envelope.
Above-mentioned technical proposal is further improved, the formation sucking low-pressure area and separate single-suction (single-in let) impeller enters the side of water
It is formed between housing portion and corresponding pump shaft into water small―gap suture runner, first seal area enters water small―gap suture described in
Runner is connected to sucking low-pressure area so that fluid can flow to the stream in sucking low-pressure area and the first seal area from the first seal area
Body pressure is greater than the Fluid pressure in sucking low-pressure area.
In this way, the first seal area and sucking low-pressure area are connected to by entering water small―gap suture runner, without in addition opening up connection stream
Road, structure is simpler, and manufacture is more convenient；When design and manufacture, by control water outlet small―gap suture runner and enter water small―gap suture runner
Inflow-rate of water turbine, to adjust the pressure difference between linking area, flow fluid by specified path and reach balancing axial thrust and
The cooling required pressure requirements of machine sealing flushing.
The utility model is innovatively complete by the workspace of tail end mechanical seal and the relatively low pressure area of former balancing drum side
Connection forms the second seal area, and is provided with into water small―gap suture runner and is connected to the first seal area and sucking low-pressure area to realize two
The unified of pipeline uses；It should be strongly noted that the hole for pump shaft installation opened up on pump case, inner wall and pump shaft it
Between gap be objective reality, be that leakage is wanted to avoid and inevitably in order to prevent, so just needs are the two of pump case
Mechanical seal is set between end and pump shaft, to prevent the fluid in pump case from leaking out from the installation gap of pump shaft.So pump case
Space between interior two mechanical seal is all theoretically to be connected to by gap inevitable between pump shaft and pump case, in order to more
It prevents from leaking well, the gap as far as possible small is made under rotating flexible situation guaranteeing pump shaft；This enters with the utility model
Water small―gap suture runner have essence difference, meaning and solve the technical issues of be all different, before be intended to eliminate not
The water small―gap suture runner that enters in sharp gap, the utility model is the action cell for being deliberately arranged, and being used to be connected to and control inflow-rate of water turbine,
In other words, when implementation, this enter water small―gap suture runner be also possible to be opened in it is corresponding for the first seal area and sucking to be isolated
Connection through-hole on the housing portion of low-pressure area, using the action cell as connection and control inflow-rate of water turbine；The utility model is preferred
Enter water small―gap suture runner using described in gap location inevitable between pump shaft and pump case setting, is in order to without the in addition company of opening up
Hole is manufactured all with being more convenient for.Simultaneously in order to which obtain that two pipelines uniformly use simplifies effect, by the work of tail end mechanical seal
Area is connected to be formed completely with the relatively low pressure area of former balancing drum side, and there is the second seal area of required Fluid pressure also to break
Conventional leak free design thinking finally enables two pipelines unify and effectively uses.
Further, the single-suction (single-in let) impeller that the pump shaft is equipped with is several of series aiding connection, all equal positions of single-suction (single-in let) impeller
In in pump case, the balancing drum is located at the side of the last one single-suction (single-in let) impeller water outlet；The sucking low-pressure area and first single suction
Impeller enters the side connection of water, and the discharge higher-pressure region is connected to the side that the last one single-suction (single-in let) impeller is discharged；Arbitrary neighborhood
The discharge runner of two single-suction (single-in let) impellers, previous single-suction (single-in let) impeller is connected with the suction passage of the latter single-suction (single-in let) impeller.
In this way, being the utilization form on centrifugal multistage pump multiple centrifugal pump, centrifugal multistage pump multiple centrifugal pump is higher due to pumping fluid power requirement,
Concatenated impeller is more, and the axial force for being applied to pump shaft of each impeller superposition is just bigger, for the axial float for reducing rotor, prevents
Only impeller rubs with shell, it is necessary to balancing drum is set, and this utilization can effectively simplify the structure of centrifugal multistage pump multiple centrifugal pump,
Remove from and quote the external water source trouble cooling for machine envelope, without on pump case aperture take machine sealing flushing water, it is thus also avoided that open
Fluid energy losses caused by hole is fetched water, to also just improve the efficiency of pump.
Further, the outer circumferential of the balancing drum is arranged with the bushing being fixedly connected with the pump case, the water outlet
Small―gap suture runner is formed between the peripheral outer wall of the balancing drum and the inner wall of the bushing.
This way it is possible to avoid balancing drum peripheral outer wall friction pump case causes the damage of pump case when pump shaft anomalous rotation, increase
Bushing can only replace the bushing of damage, easy to repair, can also be controlled by matching the bushing of only internal diameter
It is discharged the inflow-rate of water turbine of small―gap suture runner, convenient for adjusting.
Compared with prior art, the utility model has the following beneficial effects:
1, balance pipe and machine sealing flushing pipeline are unified for " external balance pipe " by the utility model, eliminate an exterior tube
Road simplifies the structure of centrifugal pump more, reduces manufacturing cost.
2, the utility model is innovatively complete by the workspace of tail end mechanical seal and the relatively low pressure area of former balancing drum side
Full-mesh forms the second seal area, and is provided with into water small―gap suture runner and is connected to the first seal area and sucking low-pressure area, breaks
Conventional leak free design thinking enables two pipelines to unify and effectively uses.
3, Fluid pressure is rationally utilized in the utility model, reduces fluid energy losses, to also just improve pump
Whole efficiency.
Detailed description of the invention
Fig. 1-specific embodiment simplifies the structural schematic diagram of structure centrifugal pump；
What Fig. 2-specific embodiment simplified balance in structure centrifugal pump and machine sealing flushing water flows to schematic diagram；
Wherein, pump shaft 1, balancing drum 11, single-suction (single-in let) impeller 12, pump case 2, the first seal area 21 enter water small―gap suture runner 22, inhale
Enter low-pressure area 23, discharge higher-pressure region 24 is discharged small―gap suture runner 25, the second seal area 26, bushing 27, water inlet 28, water outlet
29, mechanical seal 3, anti-leak face 31, gland 32, water flow via hole 33, external balance pipe 4, bearing housing 5, bearing 51, through-hole
52。
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1, specific embodiment simplifies structure centrifugal pump, is six grades of centrifugal pumps of pump case radial direction subdivision, including water
Flat pump shaft 1, the pump shaft 1 are equipped with six single-suction (single-in let) impellers 12 that balancing drum 11 and series aiding connection are installed, the balancing drum 11
Positioned at the side (relative to the side for entering water) that afterbody single-suction (single-in let) impeller 12 is discharged, six single-suction (single-in let) impellers 12 and balancing drum 11 are equal
In pump case 2, the pump case 2 is respectively equipped with mechanical seal 3 between the axial both ends of pump shaft 1 and the pump shaft 1, passes through machine
Tool seals the position that 3 pairs of pump shafts 1 are pierced by pump case 2 and is sealed against leak-stopping liquid；The pump case 2 is outside the axial both ends of pump shaft 1
Portion is connected with bearing housing 5, and the bearing housing 5 includes extending interconnecting piece and extending through interconnecting piece for bearing by bolt
Cabinet 5 is directly fixedly connected on pump case 2；The shaft part that pump shaft 1 is pierced by 2 both ends of pump case passes through the axis that bearing 51 is mounted in corresponding end
It holds in cabinet 5, the either end of pump shaft 1 is pierced by the bearing housing 5 of corresponding end and connects motor (not shown), bearing housing
5 for axial subdivision structure in order to installing；One with the afterbody single-suction (single-in let) impeller 12 water outlet is formed in the pump case 2
Discharge higher-pressure region 24(, that is, afterbody single-suction (single-in let) impeller 12 discharge runner of side connection) and with first order single-suction (single-in let) impeller 12 enter water
Side connection sucking low-pressure area 23(, that is, first order single-suction (single-in let) impeller 12 suction passage), two single suction leaves of intermediate arbitrary neighborhood
Wheel 12, the discharge runner of previous stage single-suction (single-in let) impeller 12 is connected with the suction passage of rear stage single-suction (single-in let) impeller 12；The balancing drum 11
Peripheral outer wall and pump case 2 between be formed with water outlet small―gap suture runner 25；Formed the sucking low-pressure area 23 and far from described
First order single-suction (single-in let) impeller 12, which enters, is formed with the first seal area between the housing portion of the side of water and the mechanical seal 3 of respective side
21, the second seal area is formed between the mechanical seal 3 for the side that the balancing drum 11 and afterbody single-suction (single-in let) impeller 12 are discharged
26；Two anti-leak faces 31 of the respective opposite sliding fitting of two mechanical seal 3 are located in corresponding seal area；First sealing
Area 21 is connected to the second seal area 26 by external balance pipe 4, and specifically, mechanical seal 3 includes the opposite pressure of pump case 2 in the outer part
Lid 32 offers water flow via hole 33 on gland 32, and the water flow via hole 33 in two mechanical seals 3 passes through the external balance pipe 4 and connects
It connects so that first seal area 21 and the second seal area 26 are connected to by external balance pipe 4, is also opened on corresponding bearing housing 5
Equipped with through-hole 52 so that the external balance pipe 4 passes through；Second seal area 26 by the water outlet small―gap suture runner 25 and
Discharge higher-pressure region 24 is connected to so that fluid can flow in the second seal area 26 and discharge higher-pressure region 24 from discharge higher-pressure region 24
Fluid pressure is greater than the Fluid pressure in the second seal area 26；First seal area 21 is connected to sucking low-pressure area 23, specifically
Ground is described forming sucking low-pressure area 23 and enter housing portion and the corresponding pump of the side of water far from first order single-suction (single-in let) impeller 12
It is formed between axis 1 into water small―gap suture runner 22, first seal area 21 enters water small―gap suture runner 22 and sucking described in
Low-pressure area 23 is connected to so that fluid can flow to the fluid in sucking low-pressure area 23 and the first seal area 21 from the first seal area 21
Pressure is greater than the Fluid pressure in sucking low-pressure area 23, in this way, being connected to 21 He of the first seal area by entering water small―gap suture runner 22
Low-pressure area 23 is sucked, without in addition opening up connection runner, structure is simpler, and manufacture is more convenient.
In the present embodiment, the circumferential outer sheath of the balancing drum 11 is equipped with the bushing 27 being fixedly connected with pump case 2, described
The water outlet small―gap suture runner 25 is formed between 11 peripheral outer wall of balancing drum and the inner wall of the bushing 27, it in this way can be to avoid pump
When 1 anomalous rotation of axis, 11 peripheral outer wall of balancing drum friction pump case 2 causes the damage of pump case 2, and increasing bushing 27 can only more
The bushing 27 or balancing drum 11 of damage are changed, it is easy to repair, water outlet can be controlled by matching the bushing 27 of only internal diameter
The inflow-rate of water turbine of small―gap suture runner 25, it is easy to adjust.When implementation, similarly, the formation sucking low-pressure area 23 the and separate first order
Single-suction (single-in let) impeller 12, which enters, also can be set such bushing between the housing portion of the side of water and corresponding pump shaft 1, reach identical
Effect.
The centrifugal pump of the utility model is unified by balance pipe and machine sealing flushing pipeline and effectively uses, and eliminates an outside
Pipeline simplifies the structure of pump more；Second seal area 26 is the relatively low pressure area of former balancing drum side, is guaranteeing balance shaft
The flushing that Fluid pressure while to power function in the area Shi Gai is sealed for machine is cooling, avoids the direct pressure release of fluid and flows into sucking
There are fluid energy losses in runner, Fluid pressure is utilized rationally to also just improve the efficiency of pump.Equally also protect
The source for having demonstrate,proved machine sealing flushing pressure water removes from and quotes the external water source trouble cooling for machine envelope；It is opened without on pump case 2
Hole takes machine sealing flushing water, it is thus also avoided that fluid energy losses caused by aperture is fetched water, to further improve the efficiency of pump.Axis
It holds cabinet 5 directly to connect with pump case 2, eliminates the common bracket for being used to connect bearing housing 5 and pump case 2, improve connection
Rigidity using axial subdivision structure and offers through-hole 52, under the premise of being easily installed, improves stabilization when pump work
Property, reduce vibration.
Referring to Fig. 1, Fig. 2, in use, fluid is inhaled into from the water inlet 28 of pump, is sucked low-pressure area 23 and is sucked by impeller,
It is pressurized, is then pumped out through discharge higher-pressure region 24 from water outlet 29 step by step；Wherein, segment fluid flow also warp is flat in discharge higher-pressure region 24
The water outlet small―gap suture runner 25 to weigh between drum 11 and bushing 27 enters the second seal area 26, is discharged small―gap suture runner 25 by control
Inflow-rate of water turbine, Fluid pressure in the second seal area 26 can be made to be less than the Fluid pressure of discharge higher-pressure region 24, pass through the second sealing
The pressure difference in area 26 and discharge higher-pressure region 24, make balancing drum 11 pass to pump shaft 1 far from impeller enter water a side direction power with
Play balanced action；Second seal area 26 is connected to the first seal area 21 by external balance pipe 4, and Fluid pressure is identical；Pass through control
The inflow-rate of water turbine into water small―gap suture runner 22 is made, the Fluid pressure sucked in low-pressure area 23 can be made less than the fluid of the first seal area 21
Pressure, the fluid in the second seal area 26 return sucking low-pressure area 23, fluid after external balance pipe 4, the first seal area 21
During flowing through the second seal area 26, the first seal area 21, two anti-leak faces of the opposite sliding fitting to machine envelope are also achieved
31 cool.The opportunity of described control water outlet small―gap suture runner 25 and the inflow-rate of water turbine for entering water small―gap suture runner 22, be
When design and manufacture, after assembling, inflow-rate of water turbine is just decided, fluid flow and reach by specified path balancing axial thrust and
The cooling required pressure requirements of machine sealing flushing.
The utility model is innovatively complete by the workspace of tail end mechanical seal 3 and the relatively low pressure area of 11 side of former balancing drum
Full-mesh forms the second seal area 26, and is provided with into water small―gap suture runner 22 and is connected to the first seal area 21 and sucking low-pressure area
23 to realize that the unified of two pipelines uses；It should be strongly noted that the hole installed for pump shaft 1 opened up on pump case 2,
It is objective reality gap between inner wall and pump shaft 1, is that leakage is wanted to avoid and inevitably in order to prevent, so just needs
Mechanical seal 3 is set between the both ends and pump shaft 1 of pump case 2 to prevent the fluid in pump case 2 from leaking from the installation gap of pump shaft 1
Out.So the space in pump case 2 between two mechanical seals 3, is all theoretically by inevitable between pump shaft 1 and pump case 2
Gap connection, in order to be better protected from leakage, to make the gap as far as possible small in flexible situation guaranteeing that pump shaft 1 rotates；
The technical issues of difference for entering water small―gap suture runner 22 and having essence of this and the utility model, meaning and solution is all different
, the water small―gap suture runner 22 that enters in the unfavorable gap for being intended to eliminate of front, the utility model is deliberately to be arranged, and be used to connect
Logical and control inflow-rate of water turbine action cell, in other words, when implementation, this enters water small―gap suture runner 22 and is also possible to be opened in correspondence
For the first seal area 21 be isolated and sucks the connection through-hole on the housing portion of low-pressure area 23, using as connecting and controlled
The action cell of flow；The utility model enters water preferably by described in gap location inevitable between pump shaft 1 and pump case 2 setting
Small―gap suture runner 22 is to be manufactured without in addition opening up connection through-hole with being more convenient for.Make simultaneously in order to obtain two pipelines uniformly
Effect is simplified, the workspace of tail end mechanical seal 3 is connected to completely to be formed with the relatively low pressure area of 11 side of former balancing drum
The second seal area 26 with required Fluid pressure has also broken conventional leak free design thinking, and two pipelines is finally enable to unite
It effectively uses together.
Since machine sealing flushing cooling water there are certain requirements, so this centrifugal pump is suitable for pumping the clear water liquid of room temperature or is free of
The flow media of solid particulate matter.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (4)
1. simplifying structure centrifugal pump, including horizontal pump shaft (1), the pump shaft (1) is equipped with single-suction (single-in let) impeller (12) and balancing drum
(11), the balancing drum (11) is located at the side of single-suction (single-in let) impeller (12) water outlet, and the single-suction (single-in let) impeller (12) and balancing drum (11) are equal
In pump case (2), the pump case (2) is respectively equipped with mechanical seal between the both ends and the pump shaft (1) of pump shaft (1) axial direction
(3), be formed in the pump case (2) the discharge higher-pressure region (24) being connected to the side of the single-suction (single-in let) impeller (12) water outlet and with list
Phyllidium wheel (12) enters the sucking low-pressure area (23) of the side connection of water, is formed with out between the balancing drum (11) and pump case (2)
Water small―gap suture runner (25)；It is characterized by: forming sucking low-pressure area (23) and enter water far from single-suction (single-in let) impeller (12)
Be formed with the first seal area (21) between the housing portion of side and the mechanical seal (3) of respective side, the balancing drum (11) with
The second seal area (26) are formed between the mechanical seal (3) of the side of single-suction (single-in let) impeller (12) water outlet；Two mechanical seals (3) are respective
Two anti-leak faces (31) of opposite sliding fitting be located in corresponding seal area；First seal area (21) and the second sealing
Area (26) is connected to by external balance pipe (4)；Second seal area (26) passes through the water outlet small―gap suture runner (25) and spits
Higher-pressure region (24) connection is so that fluid can flow to the second seal area (26) and discharge higher-pressure region from discharge higher-pressure region (24) out
(24) Fluid pressure in is greater than the Fluid pressure in the second seal area (26), first seal area (21) and sucking low-pressure area
(23) it is connected to.
2. simplifying structure centrifugal pump according to claim 1, it is characterised in that: formation sucking low-pressure area (23) and remote
It is formed between housing portion and corresponding pump shaft (1) from the side that single-suction (single-in let) impeller (12) enters water into water small―gap suture runner
(22), first seal area (21) enters water small―gap suture runner (22) described in and is connected to sucking low-pressure area (23) so that fluid
It is low that the Fluid pressure that can be flowed to from the first seal area (21) in sucking low-pressure area (23) and the first seal area (21) is greater than sucking
Fluid pressure in pressure area (23).
3. simplifying structure centrifugal pump according to claim 1, it is characterised in that: the single-suction (single-in let) impeller that the pump shaft (1) is equipped with
(12) be series aiding connection several, all single-suction (single-in let) impellers (12) are respectively positioned in pump case (2), and the balancing drum (11) is located at last
The side of one single-suction (single-in let) impeller (12) water outlet；The side that sucking low-pressure area (23) and first single-suction (single-in let) impeller (12) enter water connects
Logical, the discharge higher-pressure region (24) is connected to the side that the last one single-suction (single-in let) impeller (12) is discharged；Two single suction leaves of arbitrary neighborhood
It takes turns (12), the discharge runner of previous single-suction (single-in let) impeller (12) is connected with the suction passage of the latter single-suction (single-in let) impeller (12).
4. simplifying structure centrifugal pump according to claim 1, it is characterised in that: the outer circumferential of the balancing drum (11) is arranged
There is the bushing (27) being fixedly connected with the pump case (2), the water outlet small―gap suture runner (25) is formed in the balancing drum (11)
Peripheral outer wall and the bushing (27) inner wall between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821147319.7U CN208416967U (en) | 2018-07-19 | 2018-07-19 | Simplify structure centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821147319.7U CN208416967U (en) | 2018-07-19 | 2018-07-19 | Simplify structure centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208416967U true CN208416967U (en) | 2019-01-22 |
Family
ID=65123814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821147319.7U Withdrawn - After Issue CN208416967U (en) | 2018-07-19 | 2018-07-19 | Simplify structure centrifugal pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN208416967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757477A (en) * | 2018-07-19 | 2018-11-06 | 重庆水泵厂有限责任公司 | One kind simplifying structure centrifugal pump |
-
2018
- 2018-07-19 CN CN201821147319.7U patent/CN208416967U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757477A (en) * | 2018-07-19 | 2018-11-06 | 重庆水泵厂有限责任公司 | One kind simplifying structure centrifugal pump |
| CN108757477B (en) * | 2018-07-19 | 2023-07-21 | 重庆水泵厂有限责任公司 | Centrifugal pump with simplified structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190122 Effective date of abandoning: 20230721 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190122 Effective date of abandoning: 20230721 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |