CN112412809A - Centrifugal pump capable of reducing internal pressure pulsation - Google Patents

Centrifugal pump capable of reducing internal pressure pulsation Download PDF

Info

Publication number
CN112412809A
CN112412809A CN202011311201.5A CN202011311201A CN112412809A CN 112412809 A CN112412809 A CN 112412809A CN 202011311201 A CN202011311201 A CN 202011311201A CN 112412809 A CN112412809 A CN 112412809A
Authority
CN
China
Prior art keywords
pump body
base
centrifugal pump
pressure pulsation
internal pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011311201.5A
Other languages
Chinese (zh)
Inventor
潘碧琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202011311201.5A priority Critical patent/CN112412809A/en
Publication of CN112412809A publication Critical patent/CN112412809A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • 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
    • F04D29/086—Sealings especially adapted for liquid pumps
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a centrifugal pump capable of reducing internal pressure pulsation, which comprises a base, wherein the structure of the base is provided with reserved mounting hole sites, the number of the reserved mounting hole sites is four, a pump body and a motor are arranged above the base, a first support column is fixedly arranged between the pump body and the base through bolts, a second support column is fixedly arranged between the motor and the base through bolts, and an input pipeline is fixedly arranged on one side of the pump body, which is far away from the motor, through welding. According to the centrifugal pump capable of reducing internal pressure pulsation, when pressure pulsation is generated inside a pump body of the centrifugal pump, high pressure is formed in a local area, the position is in a changing state, and when the pressure exceeds the elastic threshold of the rubber diaphragm, the rubber diaphragm is forced to bulge towards the inside of the cavity, so that the pressure in the area is recovered to be normal.

Description

Centrifugal pump capable of reducing internal pressure pulsation
Technical Field
The invention relates to the field of centrifugal pumps, in particular to a centrifugal pump capable of reducing internal pressure pulsation.
Background
The centrifugal pump is a pump for conveying a liquid by centrifugal force generated when an impeller rotates. Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. The existing centrifugal pump has certain defects when in use, unstable flow is easy to occur in the centrifugal pump, larger pressure pulsation is formed, and certain adverse effects are brought to a centrifugal pump body and supporting facilities.
Disclosure of Invention
The invention mainly aims to provide a centrifugal pump capable of reducing internal pressure pulsation, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a can reduce internal pressure pulsation centrifugal pump, includes the base, set up in the structure of base and reserve the installation hole site, and the quantity of reserving the installation hole site is four groups, the top of base is provided with the pump body and motor, there is first support column through bolt fixed mounting between the pump body and the base, there is the second support column through bolt fixed mounting between motor and the base, one side that the motor was kept away from to the pump body has input pipeline through welded fastening, the outer wall of the pump body has output pipeline through welded fastening.
Preferably, a first flange plate is fixedly installed at one end of the input pipeline through welding, a first sealing ring is arranged on the side face of the first flange plate, and a first flow valve is arranged in the middle of the input pipeline.
Preferably, the top end of the output pipeline is fixedly provided with a second flange plate through welding, the top of the second flange plate is provided with a second sealing ring, and the middle part of the output pipeline is provided with a second flow valve.
Preferably, a rubber diaphragm is arranged in the structure of the pump body, a cavity is formed in the structure of the pump body, a strip-shaped through hole is formed in the inner wall of the pump body and communicated with the cavity, and the rubber diaphragm is located in the strip-shaped through hole.
Preferably, the edge of the rubber diaphragm is coated with a sealant, and the edge of the rubber diaphragm is fixedly connected with the hole wall of the strip-shaped through hole through the sealant.
Compared with the prior art, the invention has the following beneficial effects: the centrifugal pump capable of reducing internal pressure pulsation has the advantages that when pressure pulsation is generated in the pump body of the centrifugal pump, high pressure is formed in a local part, and the position is in a changing state, when the pressure exceeds the elastic threshold of the rubber diaphragm, the rubber diaphragm is forced to bulge towards the inner part of the cavity, therefore, the pressure in the area is recovered to be normal, the internal pressure pulsation of the centrifugal pump is reduced by the method, the adverse effect of the overhigh pressure pulsation on the centrifugal pump and supporting facilities is avoided, the input quantity and the output quantity tend to be stable due to the design of the first flow valve and the second flow valve, and when the rubber diaphragm bulges towards the inside of the cavity, the inside accommodation space of the pump body is amplified, the input quantity is increased to lead to the excessive accommodation, the high-pressure environment is repeatedly formed, the use of people is facilitated, the whole centrifugal pump capable of reducing the internal pressure pulsation is simple in structure and convenient to operate, and the using effect is better than that of a traditional mode.
Drawings
Fig. 1 is a front view of a centrifugal pump of the present invention for reducing internal pressure pulsations.
Fig. 2 is a schematic structural diagram of a pump body in a centrifugal pump capable of reducing internal pressure pulsation according to the invention.
Fig. 3 is an enlarged view of a in fig. 2 of a centrifugal pump of the present invention for reducing internal pressure pulsations.
In the figure: 1. a base; 2. a first support column; 3. a second support column; 4. a pump body; 5. a motor; 6. an input pipe; 7. a first flange plate; 8. an output pipe; 9. a second flange plate; 10. a first flow valve; 11. a second flow valve; 12. a cavity; 13. a rubber diaphragm; 14. and (7) sealing the glue.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The first embodiment is as follows:
as shown in figure 1, the centrifugal pump capable of reducing internal pressure pulsation comprises a base 1, a reserved mounting hole is arranged in the structure of the base 1, the number of the reserved mounting hole sites is four, a pump body 4 and a motor 5 are arranged above the base 1, a first support column 2 is fixedly arranged between the pump body 4 and the base 1 through bolts, the pump body 4 is supported, a second support column 3 is fixedly arranged between the motor 5 and the base 1 through bolts, the motor 5 is supported, an input pipeline 6 is fixedly arranged on one side of the pump body 4 far away from the motor 5 through welding, the input pipeline 6 is used for inputting fluid, an output pipeline 8 is fixedly arranged on the outer wall of the pump body 4 through welding, the output pipeline 8 is used for outputting fluid, and input pipeline 6 and output pipeline 8 all adopt the waterproof installation of welded, and the installation back structure is firm, durable.
Example two:
on the basis of the first embodiment, as shown in fig. 1, a first flange 7 is fixedly installed at one end of the input pipeline 6 by welding, a first sealing ring is arranged on the side surface of the first flange 7, so that the sealing effect after the input pipeline is in butt joint with an input stage in a pipeline system is improved, and a first flow valve 10 is arranged in the middle of the input pipeline 6, so that the input quantity tends to be stable.
Example three:
on the basis of the first embodiment, as shown in fig. 1, the top end of the output pipeline 8 is fixedly provided with a second flange 9 by welding, the top of the second flange 9 is provided with a second sealing ring to improve the sealing effect after butt joint with an output stage in a pipeline system, and the middle part of the output pipeline 8 is provided with a second flow valve 11 to stabilize the output quantity.
Example four:
on the basis of the first embodiment, as shown in fig. 2, a rubber diaphragm 13 is arranged in the structure of the pump body 4, a cavity 12 is formed in the structure of the pump body 4, a strip-shaped through hole is formed in the inner wall of the pump body 4 and is communicated with the cavity 12, the rubber diaphragm 13 is located in the strip-shaped through hole, when pressure pulsation occurs inside the pump body 4 of the centrifugal pump, high pressure is formed in a local part, the position is in a changing state, and when the pressure exceeds the elastic threshold value of the rubber diaphragm 13, the rubber diaphragm 13 is forced to bulge towards the inside of the cavity 12, so that the pressure in the area is recovered to be normal, and by means of the method, the pressure pulsation inside the pump body 4 is reduced, and adverse effects caused by the excessively high.
Example five:
on the basis of the fourth embodiment, as shown in fig. 3, the edge of the rubber membrane 13 is coated with the sealant 14, and the edge of the rubber membrane 13 is fixedly connected with the hole wall of the strip-shaped through hole through the sealant 14, so that the rubber membrane 13 is firmly fixed in the strip-shaped through hole and a good sealing effect is maintained.
It should be noted that, the invention is a centrifugal pump capable of reducing internal pressure pulsation, before use, an input pipeline 6 is butted with an input stage of a pipeline system through a first flange 7, an output pipeline 8 is butted with an output stage of the pipeline system through a second flange 9, when the centrifugal pump is used, a motor 5 is controlled to be started, an impeller is arranged inside a pump body 4, an output shaft of the motor 5 extends into the pump body 4 to be in transmission connection with the impeller, the motor 5 drives the impeller to rotate at high speed when the motor 5 operates, centrifugal force is generated when the impeller rotates to convey liquid, when pressure pulsation is generated inside the pump body 4 of the centrifugal pump, high pressure is formed in a local part, the position is in a changing state, when the pressure exceeds an elastic threshold value of a rubber diaphragm 13, the rubber diaphragm 13 is forced to bulge towards the inside of a cavity 12, so that the pressure in the area is recovered to, avoid too high pressure pulsation to cause harmful effects to centrifugal pump itself and supporting facility, first flow valve 10 and second flow valve 11's design makes input volume and output volume tend to stably, when avoiding rubber diaphragm 13 to the inside bloated of cavity 12, the inside accommodation space of the pump body 4 obtains the increase, and the input volume increase leads to holding too much, repeated formation high pressure environment again, comparatively practical.
In addition, the transverse section of the cavity 12 is arched, an inner arched elastic sheet 15 with an axial lead coinciding with the axial lead of an outer arched surface is arranged in each cavity 12, the two sides of the length direction of the inner arched elastic sheet 15 are respectively provided with a C-shaped elastic sheet 16, the outer diameter of each C-shaped elastic sheet 16 is larger than the diameter of an arc surface 17 on two sides of the transverse section of each cavity 12, the outer surface of each C-shaped elastic sheet 16 is in contact with the arc surface 17 of each cavity 12, the C-shaped elastic sheets 16 are radially tightened and deformed to realize tight fit with the arc surfaces 17, the inner arc concave surface of each inner arched elastic sheet 15 faces the rubber membrane 13, and a gap is reserved between the outer arc convex surface of each inner arched elastic sheet.
A plurality of conical springs 18 which are uniformly distributed at intervals are arranged on the inner circular concave surface of the inner circular elastic sheet 15, the large-diameter ends of the conical springs 18 abut against one surface, close to the inner circular elastic sheet 15, of the rubber diaphragm 13, and the small-diameter ends of the conical springs 18 are fixed in positioning holes in the inner circular concave surface.
Two ends of the inner arched elastic sheet 15 are respectively connected with an abutting part 19, and the free end of the abutting part 19 abuts against the outer side of the corresponding side edge of the rubber diaphragm 13.
When the pressure changes, the rubber diaphragm 13 deforms, the conical spring 18 is compressed, the rubber diaphragm 13 is protected, and the synchronously designed interference part 19 can prevent the rubber diaphragm 13 from being separated from the sealant due to the pressure change.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. A can reduce internal pressure pulsation centrifugal pump, includes base (1), its characterized in that: reserved mounting hole sites are arranged in the structure of the base (1), the number of the reserved mounting hole sites is four, a pump body (4) and a motor (5) are arranged above the base (1), a first support column (2) is fixedly mounted between the pump body (4) and the base (1) through bolts, a second support column (3) is fixedly mounted between the motor (5) and the base (1) through bolts, an input pipeline (6) is fixedly mounted on one side, away from the motor (5), of the pump body (4) through welding, and an output pipeline (8) is fixedly mounted on the outer wall of the pump body (4) through welding;
a rubber diaphragm (13) is arranged in the structure of the pump body (4), a cavity (12) is formed in the structure of the pump body (4), a strip-shaped through hole is formed in the inner wall of the pump body (4) and communicated with the cavity (12), and the rubber diaphragm (13) is positioned in the strip-shaped through hole;
the edge of the rubber diaphragm (13) is coated with a sealant (14), and the edge of the rubber diaphragm (13) is fixedly connected with the hole wall of the strip-shaped through hole through the sealant (14).
2. The centrifugal pump capable of reducing internal pressure pulsation according to claim 1, wherein: one end of the input pipeline (6) is fixedly provided with a first flange plate (7) through welding, a first sealing ring is arranged on the side face of the first flange plate (7), and a first flow valve (10) is arranged in the middle of the input pipeline (6).
3. The centrifugal pump capable of reducing internal pressure pulsation according to claim 1, wherein: the top of output pipeline (8) is through welded fastening install second ring flange (9), the top of second ring flange (9) is provided with the second sealing washer, the middle part of output pipeline (8) is provided with second flow valve (11).
CN202011311201.5A 2020-11-20 2020-11-20 Centrifugal pump capable of reducing internal pressure pulsation Withdrawn CN112412809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011311201.5A CN112412809A (en) 2020-11-20 2020-11-20 Centrifugal pump capable of reducing internal pressure pulsation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011311201.5A CN112412809A (en) 2020-11-20 2020-11-20 Centrifugal pump capable of reducing internal pressure pulsation

Publications (1)

Publication Number Publication Date
CN112412809A true CN112412809A (en) 2021-02-26

Family

ID=74777070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011311201.5A Withdrawn CN112412809A (en) 2020-11-20 2020-11-20 Centrifugal pump capable of reducing internal pressure pulsation

Country Status (1)

Country Link
CN (1) CN112412809A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB881882A (en) * 1957-12-23 1961-11-08 Sulzer Ag Centrifugal pumps or compressors
US3295450A (en) * 1963-06-28 1967-01-03 Siemens Ag Control device for individual waterpump installations
EP1643133A1 (en) * 2004-09-29 2006-04-05 Bayerische Motoren Werke Aktiengesellschaft Turbocharger
CN109667768A (en) * 2019-02-16 2019-04-23 李河 A kind of automatically unloading formula fire-fighting truck water pump
CN209244863U (en) * 2018-12-24 2019-08-13 常州柏繁电气有限公司 A kind of membrane piece for pressure stabilization pump and stabilized pressure pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB881882A (en) * 1957-12-23 1961-11-08 Sulzer Ag Centrifugal pumps or compressors
US3295450A (en) * 1963-06-28 1967-01-03 Siemens Ag Control device for individual waterpump installations
EP1643133A1 (en) * 2004-09-29 2006-04-05 Bayerische Motoren Werke Aktiengesellschaft Turbocharger
CN209244863U (en) * 2018-12-24 2019-08-13 常州柏繁电气有限公司 A kind of membrane piece for pressure stabilization pump and stabilized pressure pump
CN109667768A (en) * 2019-02-16 2019-04-23 李河 A kind of automatically unloading formula fire-fighting truck water pump

Similar Documents

Publication Publication Date Title
CN112412810A (en) Centrifugal pump capable of reducing internal pressure pulsation
CN112412809A (en) Centrifugal pump capable of reducing internal pressure pulsation
CN103307020B (en) A kind of centrifugal pump two pass floating type opening ring seal arrangement
CN215595978U (en) High-stability peripheral pump
CN215034738U (en) Low pressure pipeline welding set
CN213419383U (en) High-sealing horizontal centrifugal pump
CN220319880U (en) Novel pump body structure
CN2606833Y (en) Rubber joint for water pump inlet and outlet
CN203335465U (en) Double floating wear ring sealing device of centrifugal pump
CN218762000U (en) Improved multistage pipeline pump connection sealing structure
CN220910054U (en) Pump port sealing assembly of sewage pump
CN221779712U (en) A pressure boosting mechanism for a high-lift fire pump
CN111981217A (en) Anti-loosening structure for bolt on water pump pipeline
CN218817179U (en) Sealing device and mixed flow pump
CN222526591U (en) Slurry pump with inlet end flushing device
CN222295141U (en) Water supply equipment for pump station
CN212273047U (en) Water pump sealing device with combined dynamic sealing sheet and static sealing sheet
CN216111234U (en) Ultrahigh pressure pump valve with high oil leakage prevention performance
CN222910347U (en) Sealed annular jet self-priming pump
CN222415328U (en) A pipeline pump connection seat
CN218953674U (en) Balanced vane pump
CN214037088U (en) Pipeline with current limiting function
CN219242291U (en) Water pump with sealing structure
CN222950603U (en) A water-leakage-proof connecting pipe
CN210440204U (en) Improved fluid chamber structure of water pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210226

WW01 Invention patent application withdrawn after publication