CN110657099A - Single-stage double-suction horizontal self-priming pump - Google Patents
Single-stage double-suction horizontal self-priming pump Download PDFInfo
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- CN110657099A CN110657099A CN201910929587.7A CN201910929587A CN110657099A CN 110657099 A CN110657099 A CN 110657099A CN 201910929587 A CN201910929587 A CN 201910929587A CN 110657099 A CN110657099 A CN 110657099A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5886—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/007—Preventing loss of prime, siphon breakers
- F04D9/008—Preventing loss of prime, siphon breakers by means in the suction mouth, e.g. foot valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a single-stage double-suction horizontal self-sucking pump, and aims to provide a large-flow, high-efficiency and zero-leakage single-stage double-suction horizontal self-sucking pump. The pump comprises a pump shell, wherein a pump shell through hole is formed in the pump shell, a rotating shaft is installed in the pump shell through hole, a pump shell cavity is formed in the pump shell, an impeller is fixed on the rotating shaft, a mechanical seal assembly is fixed on the outer side surface of the pump shell and is arranged at two ends of the pump shell through hole, a first bearing body assembly is fixed on one mechanical seal assembly, a second bearing body assembly is fixed on the other mechanical seal assembly, an inlet pipeline is arranged at one side of the pump shell, and a cavity is formed in the other side of the pump shell. The invention has the beneficial effects that: the double-suction impeller is adopted, so that the axial force is low, the cavitation performance is improved, and the water discharge of a pump head is increased; mechanical sealing is adopted, so that the performance is stable and no leakage exists; and the reducer pipes are adopted for butt joint, so that the hydraulic loss is reduced, and the energy utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of pipeline centrifugal pumps, in particular to a single-stage double-suction horizontal self-sucking pump.
Background
The existing self-sucking pump has two types, namely a horizontal type and a vertical type, and adopts a single-stage single-sucking impeller; the horizontal self-priming pump has small flow, low efficiency and large axial force and is difficult to balance; the direct connection design of the rotor and the motor of the vertical self-priming pump leads the rotor to jump greatly, easily damages a sealing ring and an impeller, and is complex to replace the rotor, and an auxiliary impeller adopted by the rotor sealing can leak when the pump is started and stopped, thereby influencing the field environment.
Disclosure of Invention
The invention provides a single-stage double-suction horizontal self-sucking pump with high flow rate, high efficiency and zero leakage, which aims to overcome the defects of small flow rate and low efficiency of the self-sucking pump in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a single-stage double-suction horizontal self-priming pump comprises a pump shell, wherein a pump shell through hole is formed in the pump shell, a rotating shaft is installed in the pump shell through hole and is rotatably connected with the pump shell, a pump shell cavity is formed in the pump shell, an impeller is fixed on the rotating shaft and is arranged in the pump shell cavity, a mechanical seal assembly is fixed on the outer side surface of the pump shell and is arranged at two ends of the pump shell through hole, the mechanical seal assembly is sleeved on the rotating shaft and is rotatably connected with the rotating shaft, a first bearing body assembly is fixed on one mechanical seal assembly, one end of the rotating shaft is installed in the first bearing body assembly and is rotatably connected with the first bearing body assembly, a second bearing body assembly is fixed on the other mechanical seal assembly, the other end of the rotating shaft penetrates through the second bearing body assembly, and the second bearing body assembly is sleeved on the side surface of the other end of the rotating shaft, the improved pump comprises a pump shell, and is characterized in that a pump shell inlet is formed in one side of the pump shell, an inlet pipeline is connected to the pump shell inlet in a threaded mode, the inlet pipeline is communicated with a pump shell cavity, a pump shell outlet is formed in the other side of the pump shell, a cavity is connected to the pump shell outlet in a threaded mode, a cavity matched with the pump shell outlet is formed in the lower end face of the cavity, the cavity is connected with the pump shell in a threaded mode through the matching of the cavity inlet and the pump shell outlet, the cavity is communicated with the pump shell cavity, a cavity outlet matched with the cavity inlet is formed in the upper end face of the.
The pump shell is provided with a pump shell through hole, a rotating shaft is arranged in the pump shell through hole and is rotationally connected with the pump shell, a pump shell cavity is arranged in the pump shell, an impeller is fixed on the rotating shaft, the impeller is a double-suction impeller, the axial force is low and does not need to be balanced, the inlet flow rate of the impeller is reduced, the cavitation performance is improved, the water discharge of a pump head is greatly increased by the double-suction design, the impeller is arranged in the pump shell cavity, an organic seal assembly is fixed on the outer side surface of the pump shell, the mechanical seal assembly is small in mechanical seal friction, stable in performance and free of leakage, the field working environment can be greatly improved, the organic seal assembly is arranged at two ends of the pump shell through hole and is sleeved on the rotating shaft, the organic seal assembly is rotationally connected with the rotating shaft, one of the organic seal assemblies is fixed with a bearing body assembly I, one end of the rotating shaft is arranged, the other end of the rotating shaft penetrates through a bearing body assembly II, the bearing body assembly is sleeved on the side face of the other end of the rotating shaft and is rotatably connected with the rotating shaft, a double-end bearing double-support structure is adopted, the length of a cantilever of the traditional pump shaft is reduced, the whole shaft and the impeller are fixed at the center of the pump by bearings on two sides, when the equipment runs, stable and efficient running can be ensured, one side of the pump shell is provided with a pump shell inlet, the pump shell inlet is in threaded connection with an inlet pipeline, the inlet pipeline is communicated with a cavity of the pump shell, the other side of the pump shell is provided with a pump shell outlet, the pump shell outlet is in threaded connection with a cavity, the threaded connection is simple and convenient, the disassembly and assembly are easy, the lower end face of the cavity is provided with a cavity inlet matched with the pump shell outlet, the cavity is in threaded connection with the, the inner diameter of the outlet of the cavity is larger than that of the inlet of the cavity, and the tapered structure can reduce hydraulic loss and improve energy utilization rate by adopting the butt joint of the tapered pipes.
Preferably, the pump case comprises a pump body and a pump cover, the pump body and the pump cover form a water suction chamber and a water pressing chamber of the pump, the pump body is in threaded connection with the pump cover, a through hole of a rotating shaft is formed in the joint of the pump body and the pump cover, a mechanical seal shaft sleeve is arranged on the rotating shaft and fixed at two ends of an impeller, the rotating shaft is rotatably connected with the pump case through the mechanical seal shaft sleeve, a bearing retaining sleeve is arranged on the rotating shaft and arranged at two sides of the impeller, the mechanical seal shaft sleeve is arranged between the bearing retaining sleeve and the impeller, one end of the mechanical seal shaft sleeve is fixedly connected with the impeller, the other end of the mechanical seal shaft sleeve is fixedly connected with the bearing retaining sleeve, the main shaft can be protected by the additional mechanical seal shaft sleeve.
Preferably, the mechanical seal assembly comprises a mechanical seal gland, the mechanical seal gland is fixedly connected with the pump shell, the mechanical seal gland is sleeved on the mechanical seal shaft sleeve, a mechanical seal cavity is arranged between the mechanical seal gland and the pump shell, an mechanical seal body is arranged in the mechanical seal cavity, the mechanical seal body is sleeved on the mechanical seal shaft sleeve, the mechanical seal body forms a dynamic and static ring seal by a pair of friction pairs, external water washing and cooling are adopted, friction loss can be reduced, a water leakage phenomenon during starting and stopping of the pump can be avoided, and a better working environment is created.
Preferably, the bearing body assembly comprises a bearing body I, the bearing body I is sleeved on a bearing blocking sleeve, a bearing end cover I is in threaded connection with the bearing body I, a bearing gland I is arranged on the bearing end cover I, the bearing gland I is installed on one side of the bearing end cover I and is in threaded connection with the bearing end cover I, the other side of the bearing end cover I is in threaded connection with the pump shell, the added bearing gland I is used for radial positioning of the bearing body I, a bearing cavity I is arranged between the bearing end cover I and the bearing body I, one end of a rotating shaft is arranged in the bearing cavity I, a bearing bush is installed on the side face of one end of the rotating shaft, one end of the bearing bush is installed at the shaft shoulder of one end of the rotating shaft, a fastening nut is arranged at the other end of the bearing bush and is used for fixing the bearing body I, the fastening nut is fixed on the rotating shaft, a bearing pad, the first bearing is an angular contact ball bearing and is used for bearing axial force, gravity, radial force and the like of the impeller, an inner ring of the first bearing is fixed between the bearing bush and the bearing retaining sleeve, and an outer ring of the first bearing is fixed between the first bearing end cover and the first bearing body.
Preferably, the second bearing body assembly comprises a second bearing body, the second bearing body is arranged on the second bearing blocking sleeve, a second bearing end cover is arranged on the second bearing body in a threaded mode, a second bearing pressing cover is arranged on the second bearing end cover, the second bearing pressing cover is arranged on one side of the second bearing end cover and is in threaded connection with the second bearing end cover, the other side of the second bearing end cover is in threaded connection with the pump shell, the second added bearing pressing cover is used for radial positioning of the second bearing body, a second bearing cavity is arranged between the second bearing end cover and the second bearing body, the other end of the rotating shaft penetrates through the second bearing cavity, the second bearing is arranged on the side face of one end of the rotating shaft and is a deep groove ball bearing and only bears radial force, the second bearing is arranged in the second bearing cavity, the inner ring of the second bearing is fixed between the second bearing blocking sleeve and.
Preferably, the pump shell inlet is arranged on the pump body, the inlet pipeline is S-shaped, the opening at one end of the inlet pipeline is provided with the first pipeline flange, the pump shell inlet is provided with the first pump shell inlet flange matched with the first pipeline flange, the pump shell is in threaded connection with the inlet pipeline through the matching of the first pump shell inlet flange and the first pipeline flange, the pump is of a middle-open structure and is directly connected with the pipeline flange, the installation is convenient, the side wall at the other end of the inlet pipeline is provided with the control valve and the water inlet valve, the control valve is an electric air control valve, the water inlet valve is a water inlet ball valve, after the butt joint of the pump and the pipeline is completed, a water pipe is connected to the water inlet valve above the inlet pipeline, water is injected into the pump head, when the pump is stopped, the control valve works, air is sucked into the water inlet.
Preferably, the cavity is positioned above the pump shell, the cavity is a steam-water separation chamber, the outlet of the pump shell is arranged on the pump cover, the outlet of the pump shell is provided with a pump shell outlet flange, the inlet of the cavity is provided with a cavity inlet flange matched with the pump shell outlet flange, the cavity is in threaded connection with the pump shell through the matching of the cavity inlet flange and the pump shell outlet flange, the installation and the disassembly of an operator are facilitated, the side wall of the outlet of the cavity is provided with a water outlet valve, the water outlet valve is a water outlet ball valve, the water outlet valve is opened when water is injected into the water inlet valve, when the water outlet valve discharges water, the water injection is completed, the two ball valves are closed, the outlet of the cavity is provided with a cavity outlet flange, the height of the cavity outlet flange is higher than that of the pipeline flange II, the upper end face of the cavity, the other end of the return pipe penetrates through the pump cover and is arranged in the cavity of the pump body, the other end of the return pipe can extend into the water suction chamber and point to the impeller inlet, can also extend into the water pressing chamber, or can be used simultaneously, the liquid at the lower part returns to the impeller through the return pipe and is mixed with the gas in the suction pipeline, and the reciprocating circulation is carried out in such a way until all the gas in the pump head and the suction pipeline is discharged, so that the self-suction is completed.
Preferably, a water pipe joint is arranged above the pump cover, a water return pipe is connected to the water pipe joint, one end of the water pipe joint is communicated with the cavity of the pump shell through the water return pipe, the other end of the water pipe joint is communicated with the cavity of the mechanical seal through the water return pipe, water in the water return pipe is used for cooling and lubricating the mechanical seal, and effective sealing of the mechanical seal can be guaranteed in the exhaust process.
As the preferred, four angles of pump body bottom all are fixed with the support column for the location of this pump, the both sides at pump cover top all are fixed with the lug, are used for lifting by crane, conveniently dismantle the maintenance.
The invention has the beneficial effects that: the double-suction impeller is adopted, the axial force is low, the balance is not needed, the inlet flow velocity of the impeller is reduced, the cavitation performance is improved, and the water discharge of a pump head is greatly increased due to the double-suction design; the mechanical seal has small friction force, stable performance and no leakage, and can greatly improve the field working environment; the double-support structure of the bearings at two ends is adopted, the cantilever length of the traditional pump shaft is reduced, the bearings at two sides fix the whole shaft and the impeller at the center of the pump, and when the equipment runs, stable and efficient running can be ensured; the reducer pipes are adopted for butt joint, and the gradual change type structure can reduce hydraulic loss and improve the energy utilization rate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the pump casing attachment portion of FIG. 1;
FIG. 3 is a schematic diagram of the construction of the seal assembly of FIG. 1;
FIG. 4 is a schematic structural view of a first bearing body assembly of FIG. 1;
FIG. 5 is a schematic structural view of a second bearing body assembly of FIG. 1;
FIG. 6 is a schematic view of the inlet duct of FIG. 2;
fig. 7 is a schematic view of the structure of the chamber of fig. 2.
In the figure: 1. inlet pipeline, 2 chamber, 3 return pipe, 4 pump case cavity, 5 pump case, 6 bearing body assembly I, 7 rotating shaft, 8 pump case through hole, 9 impeller, 10 mechanical seal shaft sleeve, 11 bearing baffle sleeve, 12 bearing body assembly II, 13 mechanical seal assembly, 14 return pipe, 15 water pipe joint, 16 pipeline flange II, 17 lifting lug, 18 pipeline flange I, 19 pump case inlet flange, 20 pump case inlet, 21 supporting column, 22 pump body, 23 pump cover, 24 pump case outlet, 25 pump case outlet flange, 26 chamber inlet flange, 27 chamber inlet, 28 chamber outlet, 29 chamber outlet flange, 30 mechanical seal pressing cover, 31 mechanical seal body, 32 mechanical seal cavity, 33 bearing end cover I, 34 bearing cavity I, 35 bearing pad, 36 fastening nut, 37 bearing I, 38 bearing bush, 39. the bearing comprises a first bearing body, a first bearing gland, a first 41 bearing end cover, a second 42 bearing body, a second 43 bearing cavity, a second 44 bearing, a second 45 bearing gland, a second 46 bearing gland, a control valve, a water inlet valve, a 48 exhaust valve and a water outlet valve, wherein the first bearing body is a bearing body, the second bearing gland is a bearing cover, the second bearing end cover is a bearing body, the second 43 bearing cavity is a bearing cavity, the.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a single-stage double-suction horizontal self-priming pump comprises a pump shell 5, a pump shell through hole 8 is arranged on the pump shell 5, a rotating shaft 7 is arranged in the pump shell through hole 8, the rotating shaft 7 is rotatably connected with the pump shell 5, a pump shell cavity 4 is arranged in the pump shell 5, an impeller 9 is fixed on the rotating shaft 7, the impeller 9 is arranged in the pump shell cavity 4, a mechanical seal assembly 13 is fixed on the outer side surface of the pump shell 5, the mechanical seal assemblies 13 are arranged at two ends of the pump shell through hole 8, the mechanical seal assembly 13 is sleeved on the rotating shaft 7, the mechanical seal assembly 13 is, one of the mechanical seal assemblies 13 is fixed with a first bearing body assembly 6, one end of the rotating shaft 7 is installed in the first bearing body assembly 6 and is rotatably connected with the first bearing body assembly 6, the other mechanical seal assembly 13 is fixed with a second bearing body assembly 12, the other end of the rotating shaft 7 penetrates through the second bearing body assembly 12, and the second bearing body assembly 12 is sleeved on the side face of the other end of the rotating shaft 7 and is rotatably connected with the rotating shaft 7.
As shown in fig. 2, a pump casing inlet 20 is arranged on one side of a pump casing 5, an inlet pipeline 1 is connected to the pump casing inlet 20 in a threaded manner, the inlet pipeline 1 is communicated with a pump casing cavity 4, a pump casing outlet 24 is arranged on the other side of the pump casing 5, a chamber 2 is connected to the pump casing outlet 24 in a threaded manner, a chamber inlet 27 matched with the pump casing outlet 24 is arranged on the lower end face of the chamber 2, the chamber 2 is connected with the pump casing 5 in a threaded manner through the matching of the chamber inlet 27 and the pump casing outlet 24, the chamber 2 is communicated with the pump casing cavity 4, a chamber outlet 28 matched with the chamber inlet 27 is arranged on the upper end face of the chamber 2.
As shown in fig. 2, the pump case 5 is composed of a pump body 22 and a pump cover 23, the pump body 22 and the pump cover 23 are in threaded connection, a pump case through hole 8 is formed in a joint of the pump body 22 and the pump cover 23, as shown in fig. 1, a mechanical seal shaft sleeve 10 is arranged on a rotating shaft 7, the mechanical seal shaft sleeve 10 is fixed at two ends of an impeller 9, the rotating shaft 7 is rotatably connected with the pump case 5 through the mechanical seal shaft sleeve 10, a bearing retaining sleeve 11 is arranged on the rotating shaft 7, the bearing retaining sleeve 11 is arranged on two sides of the impeller 9, the mechanical seal shaft sleeve 10 is arranged between the bearing retaining sleeve 11 and the impeller 9, one end of the mechanical seal shaft sleeve 10 is fixedly connected with the impeller 9, and the.
As shown in fig. 3, the mechanical seal assembly 13 includes a mechanical seal cover 30, the mechanical seal cover 30 is fixedly connected to the pump housing 5, the mechanical seal cover 30 is sleeved on the mechanical seal shaft sleeve 10, a mechanical seal cavity 32 is disposed between the mechanical seal cover 30 and the pump housing 5, an mechanical seal body 31 is disposed in the mechanical seal cavity 32, and the mechanical seal body 31 is sleeved on the mechanical seal shaft sleeve 10.
As shown in fig. 4, the first bearing assembly 6 includes a first bearing body 39, the first bearing body 39 is disposed on the bearing spacer 11, the first bearing body 39 is connected with the first bearing end cover 33 in a threaded manner, the first bearing end cover 33 is provided with a first bearing gland 40, the first bearing gland 40 is mounted on one side of the first bearing end cover 33 and is connected with the first bearing end cover 33 in a threaded manner, the other side of the first bearing end cover 33 is connected with the pump casing 5 in a threaded manner, a first bearing cavity 34 is disposed between the first bearing end cover 33 and the first bearing body 39, one end of the rotating shaft 7 is disposed in the first bearing cavity 34, a bearing bush 38 is mounted on a side surface of one end of the rotating shaft 7, one end of the bearing bush 38 is mounted on a shaft shoulder of one end of the rotating shaft 7, a fastening nut 36 is disposed on the other end of the bearing bush 38, the fastening nut 36 is fixed on the rotating shaft 7, the inner ring of the first bearing 37 is fixed between the bearing bush 38 and the bearing spacer 11, and the outer ring of the first bearing 37 is fixed between the first bearing end cover 33 and the first bearing body 39.
As shown in fig. 5, the second bearing assembly 12 includes a second bearing body 42, the second bearing body 42 is sleeved on the bearing blocking sleeve 11, a second bearing end cover 41 is threaded on the second bearing body 42, a second bearing cover 45 is arranged on the second bearing end cover 41, the second bearing cover 45 is installed on one side of the second bearing end cover 41 and is in threaded connection with the second bearing end cover 41, the other side of the second bearing end cover 41 is in threaded connection with the pump housing 5, a second bearing cavity 43 is arranged between the second bearing end cover 41 and the second bearing body 42, the other end of the rotating shaft 7 penetrates through the second bearing cavity 43, a second bearing 44 is installed on the side surface of one end of the rotating shaft 7, the second bearing 44 is placed in the second bearing cavity 43, an inner ring of the second bearing 44 is fixed between the bearing blocking sleeve 11 and a shaft shoulder of the rotating shaft 7, and an outer ring of the.
As shown in fig. 2 and 6, the pump housing inlet 20 is disposed on the pump body 22, the inlet pipeline 1 is S-shaped, the opening at one end of the inlet pipeline 1 is provided with a first pipeline flange 18, the pump housing inlet 20 is provided with a pump housing inlet flange 19 matched with the first pipeline flange 18, the pump housing 5 is in threaded connection with the inlet pipeline 1 through the matching of the pump housing inlet flange 19 and the first pipeline flange 18, the side wall at the other end of the inlet pipeline 1 is provided with a control valve 46 and a water inlet valve 47, and the other end of the inlet pipeline 1 is provided with a second pipeline flange 16.
As shown in fig. 2 and 7, the chamber 2 is located above the pump housing 5, the pump housing outlet 24 is arranged on the pump cover 23, the pump housing outlet 24 is provided with a pump housing outlet flange 25, the chamber inlet 27 is provided with a chamber inlet flange 26 matched with the pump housing outlet flange 25, the chamber 2 is in threaded connection with the pump housing 5 through the matching of the chamber inlet flange 26 and the pump housing outlet flange 25, the side wall of the chamber outlet 28 is provided with a water outlet valve 49, the chamber outlet 28 is provided with a chamber outlet flange 29, the height of the chamber outlet flange 29 is higher than that of the second pipeline flange 16, the upper end surface of the chamber 2 is provided with an exhaust valve 48, the lower end surface of the chamber 2 is provided with a return pipe 3, one end of the return pipe 3 is in threaded connection with the chamber 2.
As shown in fig. 1, a water pipe connector 15 is arranged above the pump cover 23, a water return pipe 14 is connected to the water pipe connector 15, one end of the water pipe connector 15 is communicated with the pump case cavity 4 through the water return pipe 14, and the other end of the water pipe connector 15 is communicated with the machine seal cavity 32 through the water return pipe 14.
As shown in fig. 2, support columns 21 are fixed at four corners of the bottom of the pump body 22, and lifting lugs 17 are fixed at two sides of the top of the pump cover 23.
After the pump is connected with the pipeline in an abutting mode, a water pipe is connected to a water inlet valve 47 above an inlet pipeline 1, water is filled into the pump head, a water outlet valve 49 on a cavity outlet 28 is opened, when water is discharged from the water outlet valve 49, the water filling is completed, and two ball valves are closed.
After the pump is started, due to the rotation action of the impeller 9, air and water in the suction pipeline are fully mixed, a gas-liquid ring is formed between the outlet of the impeller 9 and the volute and is separated by the isolating tongue and is discharged to the chamber 2, the gas at the upper part of the chamber 2 is discharged by the chamber outlet 28 and the exhaust valve 48, the liquid at the lower part returns to the pump shell cavity 4 again through the return pipe 3 and is mixed with the gas in the suction pipeline, and the reciprocating circulation is carried out until all the gas in the pump head and the suction pipeline is discharged, so that the self-suction is completed.
After the pump is stopped, the control valve 46 works, air is sucked into the inlet pipeline 1 to prevent siphoning, and water in the pump head can be started again without refilling.
Claims (9)
1. The single-stage double-suction horizontal self-priming pump is characterized by comprising a pump shell (5), wherein a pump shell through hole (8) is formed in the pump shell (5), a rotating shaft (7) is installed in the pump shell through hole (8), the rotating shaft (7) is rotatably connected with the pump shell (5), a pump shell cavity (4) is formed in the pump shell (5), an impeller (9) is fixed on the rotating shaft (7), the impeller (9) is arranged in the pump shell cavity (4), a mechanical seal assembly (13) is fixed on the outer side surface of the pump shell (5), the mechanical seal assemblies (13) are arranged at two ends of the pump shell through hole (8), the mechanical seal assembly (13) is sleeved on the rotating shaft (7), the mechanical seal assembly (13) is rotatably connected with the rotating shaft (7), a bearing body assembly I (6) is fixed on one of the mechanical seal assemblies (13), one end of the rotating shaft (7) is installed in the bearing body assembly I (6) and is rotatably connected with the bearing body assembly I (6, a second bearing body assembly (12) is fixed on the other machine seal assembly (13), the other end of the rotating shaft (7) penetrates through the second bearing body assembly (12), the second bearing body assembly (12) is sleeved on the side face of the other end of the rotating shaft (7) and is rotatably connected with the rotating shaft (7), a pump shell inlet (20) is arranged on one side of the pump shell (5), an inlet pipeline (1) is connected onto the pump shell inlet (20) in a threaded manner, the inlet pipeline (1) is communicated with the pump shell cavity (4), a pump shell outlet (24) is arranged on the other side of the pump shell (5), a chamber (2) is connected onto the pump shell outlet (24) in a threaded manner, a chamber inlet (27) matched with the pump shell outlet (24) is arranged on the lower end face of the chamber (2), and the chamber (2) is in threaded connection with the pump shell (5) through the matching of the chamber inlet (27, the pump shell cavity (4) is communicated with the cavity (2), a cavity outlet (28) matched with the cavity inlet (27) is formed in the upper end face of the cavity (2), and the inner diameter of the cavity outlet (28) is larger than that of the cavity inlet (27).
2. The single-stage double-suction horizontal self-priming pump of claim 1, wherein the pump casing (5) is composed of a pump body (22) and a pump cover (23), the pump body (22) is in threaded connection with the pump cover (23), the pump shell through hole (8) is arranged at the joint of the pump body (22) and the pump cover (23), the rotating shaft (7) is provided with a mechanical seal shaft sleeve (10), the mechanical seal shaft sleeve (10) is fixed at two ends of the impeller (9), the rotating shaft (7) is rotationally connected with the pump shell (5) through a machine seal shaft sleeve (10), the rotating shaft (7) is provided with a bearing retaining sleeve (11), the bearing retaining sleeve (11) is arranged at two sides of the impeller (9), the mechanical seal shaft sleeve (10) is arranged between the bearing retaining sleeve (11) and the impeller (9), one end of the mechanical seal shaft sleeve (10) is fixedly connected with the impeller (9), and the other end of the mechanical seal shaft sleeve (10) is fixedly connected with the bearing retaining sleeve (11).
3. The single-stage double-suction horizontal self-priming pump of claim 2, wherein the mechanical seal assembly (13) comprises a mechanical seal cover (30), the mechanical seal cover (30) is fixedly connected with the pump shell (5), the mechanical seal cover (30) is sleeved on the mechanical seal shaft sleeve (10), a mechanical seal cavity (32) is arranged between the mechanical seal cover (30) and the pump shell (5), an mechanical seal body (31) is arranged in the mechanical seal cavity (32), and the mechanical seal body (31) is sleeved on the mechanical seal shaft sleeve (10).
4. The single-stage double-suction horizontal self-priming pump of claim 2, wherein the first bearing assembly (6) comprises a first bearing body (39), the first bearing body (39) is sleeved on the bearing spacer sleeve (11), a first bearing end cover (33) is in threaded connection with the first bearing body (39), a first bearing cover (40) is arranged on the first bearing end cover (33), the first bearing cover (40) is installed on one side of the first bearing end cover (33) and is in threaded connection with the first bearing end cover (33), the other side of the first bearing end cover (33) is in threaded connection with the pump shell (5), a first bearing cavity (34) is arranged between the first bearing end cover (33) and the first bearing body (39), one end of the rotating shaft (7) is arranged in the first bearing cavity (34), and a bearing bushing (38) is installed on the side surface of one end of the rotating shaft (7), the shaft shoulder department at pivot (7) one end is installed to the one end of bearing bush (38), the other end of bearing bush (38) is equipped with fastening nut (36), fastening nut (36) are fixed on pivot (7), be equipped with bearing pad (35) between fastening nut (36) and bearing bush (38), install bearing (37) on the side of bearing bush (38), the inner circle of bearing (37) is fixed between bearing bush (38) and bearing stop collar (11), the outer lane of bearing (37) is fixed between bearing end cover (33) and bearing body (39).
5. The single-stage double-suction horizontal self-priming pump of claim 2, wherein the second bearing assembly (12) comprises a second bearing body (42), the second bearing body (42) is sleeved on the bearing spacer sleeve (11), the second bearing body (42) is threaded with a second bearing end cover (41), the second bearing end cover (41) is provided with a second bearing cover (45), the second bearing cover (45) is installed on one side of the second bearing end cover (41) and is in threaded connection with the second bearing end cover (41), the other side of the second bearing end cover (41) is in threaded connection with the pump housing (5), a second bearing cavity (43) is arranged between the second bearing end cover (41) and the second bearing body (42), the other end of the rotating shaft (7) penetrates through the second bearing cavity (43), the second bearing (44) is installed on the side surface of one end of the rotating shaft (7), and the second bearing (44) is arranged in the second bearing cavity (43), the inner ring of the second bearing (44) is fixed between the bearing retaining sleeve (11) and the shaft shoulder of the rotating shaft (7), and the outer ring of the second bearing (44) is fixed between the second bearing end cover (41) and the second bearing body (42).
6. The single-stage double-suction horizontal self-sucking pump as claimed in claim 2, wherein the pump shell inlet (20) is arranged on the pump body (22), the inlet pipeline (1) is S-shaped, the first pipeline flange (18) is arranged at an opening at one end of the inlet pipeline (1), the pump shell inlet flange (19) matched with the first pipeline flange (18) is arranged on the pump shell inlet (20), the pump shell (5) is in threaded connection with the inlet pipeline (1) through matching of the pump shell inlet flange (19) and the first pipeline flange (18), the side wall at the other end of the inlet pipeline (1) is provided with the control valve (46) and the water inlet valve (47), and the second pipeline flange (16) is arranged at the other end of the inlet pipeline (1).
7. The single-stage double-suction horizontal self-priming pump of claim 2 or 6, wherein the chamber (2) is located above the pump housing (5), the pump housing outlet (24) is arranged on the pump cover (23), the pump housing outlet (24) is provided with a pump housing outlet flange (25), the chamber inlet (27) is provided with a chamber inlet flange (26) matched with the pump housing outlet flange (25), the chamber (2) is in threaded connection with the pump housing (5) through the matching of the chamber inlet flange (26) and the pump housing outlet flange (25), the side wall of the chamber outlet (28) is provided with a water outlet valve (49), the chamber outlet (28) is provided with a chamber outlet flange (29), the height of the chamber outlet flange (29) is higher than the second pipeline flange (16), and the upper end surface of the chamber (2) is provided with an exhaust valve (48), the lower end face of the chamber (2) is provided with a return pipe (3), one end of the return pipe (3) is in threaded connection with the chamber (2), and the other end of the return pipe (3) penetrates through the pump cover (23) and is arranged in the pump shell cavity (4).
8. The single-stage double-suction horizontal self-sucking pump as claimed in claim 3, wherein a water pipe joint (15) is arranged above the pump cover (23), a water return pipe (14) is connected to the water pipe joint (15), one end of the water pipe joint (15) is communicated with the pump shell cavity (4) through the water return pipe (14), and the other end of the water pipe joint (15) is communicated with the mechanical seal cavity (32) through the water return pipe (14).
9. The horizontal self-priming pump of claim 2 wherein the four corners of the bottom of the pump body (22) are fixed with support posts (21), and the two sides of the top of the pump cover (23) are fixed with lifting lugs (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910929587.7A CN110657099A (en) | 2019-09-29 | 2019-09-29 | Single-stage double-suction horizontal self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910929587.7A CN110657099A (en) | 2019-09-29 | 2019-09-29 | Single-stage double-suction horizontal self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110657099A true CN110657099A (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910929587.7A Pending CN110657099A (en) | 2019-09-29 | 2019-09-29 | Single-stage double-suction horizontal self-priming pump |
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| Country | Link |
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| CN (1) | CN110657099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3117554A1 (en) | 2020-12-15 | 2022-06-17 | IFP Energies Nouvelles | self-priming pump |
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| US3296973A (en) * | 1964-03-20 | 1967-01-10 | Sykes Ltd Henry | Centrifugal pumps |
| GB1025597A (en) * | 1964-12-16 | 1966-04-14 | Thompson Ramo Wooldridge Inc | Improvements in or relating to pumps |
| JPS5486702U (en) * | 1977-12-01 | 1979-06-19 | ||
| CN2123628U (en) * | 1991-12-21 | 1992-12-02 | 仪群 | Carriage double-stage self-sucking centrifugal spraying car pump |
| CN1078023A (en) * | 1992-04-30 | 1993-11-03 | 浙江义乌石油油泵厂 | Double suction, single-stage and self-priming centrifugal pump |
| CN2779124Y (en) * | 2004-07-26 | 2006-05-10 | 江苏迎浪科技集团有限公司 | Self-absorbing type highly effective stuff pump with cutting function |
| CN200946571Y (en) * | 2006-08-14 | 2007-09-12 | 长春市第一水泵有限公司 | Strong self-sucking efficient pump |
| CN101994701A (en) * | 2009-08-21 | 2011-03-30 | 辽宁恒星泵业有限公司 | Pipeline delivery pump |
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| KR101997575B1 (en) * | 2019-03-19 | 2019-07-08 | 덕지산업주식회사 | Double Suction Self Priming Pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3117554A1 (en) | 2020-12-15 | 2022-06-17 | IFP Energies Nouvelles | self-priming pump |
| WO2022128545A1 (en) | 2020-12-15 | 2022-06-23 | IFP Energies Nouvelles | Self-priming pump |
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Application publication date: 20200107 |
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