CN208966610U - A kind of inert vacuum auxiliary self priming pump - Google Patents

Abstract

The utility model discloses a kind of inert vacuums to assist self priming pump, centrifugal pump is installed including dry type, vacuum pump, the anhydrous dry rotation protection device of mechanical seal, dry type, which is installed, is equipped with parallels above the suspension of centrifugal pump, self-priming rotator vacuum pump is fixedly installed with above parallels, it includes the pump housing that dry type, which installs centrifugal pump, pump housing axial direction side, that is, pump housing leading flank is communicated with eccentric reducer by suction casing, pump cover is connected with shaft-cup conjunction on rear side of the pump housing axial direction other side, that is, pump housing, the pump housing is communicated with pump housing cleaning port lid perpendicular to axial side, pump cover is sequentially coaxially connected with connection frame backward, suspension, main shaft is rotatably equipped with by coaxial bearing in suspension, front-end of spindle passes through pump cover and protrudes into the pump housing, the circumferential oil groove for surrounding main shaft is coaxially provided in pump cover lid, front-end of spindle in pump cover is coaxially installed with impeller；The utility model is compact-sized, small in size, light-weight, convenient for motor-driven.

Description

A kind of inert vacuum auxiliary self priming pump

Technical field

The utility model relates to centrifugal pump field, specifically a kind of inert vacuum assists self priming pump.

Background technique

Centrifugal pump is that liquid is transported to the most common pump of another place from a place, for irrigating, domestic water System, sewage treatment and many other applications.Liquid is located at the intracorporal impeller propelled of pump and passes through the pump housing by exporting from priming reservoir Pipe discharge.Spiral case inlet opening and impeller are concentric.The rotation of impeller is got rid of liquid outward to impeller outer edge and is concentrated from pump housing outlet Discharge.When liquid drives outward, vacuum is generated at center, to suck more liquid into pump.

The major limitation that centrifugal pump uses first is that, when pump in be full of air when impeller air can only be driven to rotate, because of sky The centrifugal force that the very light in weight of gas unit volume generates is very small, and usually the air in pump chamber and inlet tube cannot be discharged, they do not have There is the ability that voluntarily sucking liquid works.In general pump field, general non-diving installing type centrifugal pump is in addition to itself Outside the self priming pump of included self-suction function and the centrifugal pump by positive pressure water inlet, the centrifugal pump of most of dry type installations is required to pumping Import pipe end configures bottom valve, needs to pour water to pump and can start before first time starts.For example draining etc. uses Environment, the operation of pump be it is discontinuous, need repeat constantly artificially pour water into pump.The bottom although pump machine is mounted with bottom valve Valve has natural defect, is mainly manifested in: 1. bottom valves are heavy, and are mounted on and are not easy to sling, monitor, maintain and tie up under liquid It repairs；2. bottom valve being since long period of soaking be easy to cause burn into a liquid and then influences sealing effect, it is serious can be in secondary water suction Shi Wufa work；3. generated solid particle can enter in circulating liquid in production and process, solid particle is in bottom valve Aggregation and adherency can make bottom valve that can not be fully sealed, and bottom valve can fail at once；4. since bottom valve is mounted on into water pipe end, bottom The water entering surface that valve itself will affect pump manufactures into insufficient water.Secondly, in field work, or when needing unattended, need The water source to be drained may be drained at any time, but due to unattended, or cannot be found in time, water pump for a long time at When Yu Ganzhuan, it is easy to burn mechanical seal, even result in entire machine and be damaged.

In view of said circumstances, need to design a kind of vacuum aided self priming pump, to realize following target:

1. not needing installation bottom valve

2. centrifugal pump can voluntarily rapid vacuumizing

3. can directly carry out anhydrous starting without pouring water into pump before starting for the first time；

4. can realize self-priming and can repeatedly, lasting self-priming；

5. during self-priming, or when pump is in anhydrous operating for a long time, pump will not be damaged；

6. when centrifugal pump is started to work, vacuum pump can stop working when vacuumizing end, it is in sleep state, so as to The service life for significantly saving the energy, reducing mechanicalness noise, improving vacuum pump,

Utility model content

The purpose of the utility model is to provide a kind of inert vacuums to assist self priming pump, to solve to be centrifuged under the conditions of the prior art Pump be unable to self-priming, cannot do for a long time turn, vacuum pump is completed after vacuumizing, the problem of self-priming apparatus can not be shut down.

In order to achieve the above object, the technology employed by the present utility model is

A kind of inert vacuum auxiliary self priming pump, it is characterised in that: install centrifugal pump, the dry type installation centrifugation including dry type It is equipped with parallels above the suspension of pump, self-priming rotator vacuum pump, the dry type installation centrifugation are fixedly installed with above the parallels Pump, structure include the pump housing, and pump housing front end is furnished with suction casing, and setting-up eccentricity reduced pipe before suction casing, the pump housing is perpendicular to axial direction Side have a water-output flange, water-output flange front end connects a check-valves, and pump housing rear end is furnished with pump cover, is equipped on the outside of pump cover seal chamber Circumferential direction surrounds the oil groove of main shaft, and pump cover is successively connected with connection frame, suspension backward, and bearing and main shaft are equipped in suspension, main Axis extends out at driving end across suspension, for connecting prime mover, and passes through belt, belt pulley, electromagnetic clutch and vacuum It pumps pump shaft to be connected, and then realizes and rotate or disconnect simultaneously with self priming pump main shaft, main shaft anti-drive end passes through pump cover and enters the pump housing, leaf Wheel is located at pump housing runner center, and is mounted on main shaft, and the anhydrous dry rotation protection device of mechanical seal is equipped with above the connection frame, It includes the fuel tank being mounted on connection frame, there is oil liquid in fuel tank, and fuel tank internal upper part passes through upper oil pipe and pump cover inner oil sump top It is connected to, lower part is connected to by lower oil pipe with pump cover inner oil sump lower part in fuel tank, and circulation oil liquid circuit, benefit are made of fuel tank and oil groove Anhydrous dry rotation protection is realized with the thermosyphon effect of oil liquid.

The structure of the vacuum aided self-priming control device is: including water flow switch, exhaust pipe assembly, solenoid valve, electromagnetism Clutch, vacuum pump and controller, the normally closed top for being mounted on eccentric reducer of water flow switch, solenoid valve is normally closed to be mounted on exhaust In tube assembly, electromagnetic clutch is normally opened to be mounted on vacuum pump spindle, and vacuum pump spindle passes through belt component and electromagnetic clutch Connect self priming pump main shaft, the power supply that water flow switch passes through flow cavitation result solenoid valve and electromagnetic clutch in monitoring eccentric reducer The eccentric reducer top installation water flow switch for being mounted on suction casing front end to realize automatic start-stop and the exhaust equipped with solenoid valve Tube assembly, after being safely operated 10-11 seconds after self-priming pump startup, the normally closed water flow switch being connected with controller is powered, electricity Magnet clutch energization is attracted, vacuum pump starts running, and solenoid valves are opened, and vacuum pump begins through exhaust pipe assembly to self-priming Pump and its water inlet pipe be exhausted and vacuumize, after several seconds, when water enters eccentric reducer the baffle of flow impact water flow switch, Water flow switch disconnects immediately, and solenoid valve also close immediately by power-off, simultaneously, being connected with water flow switch, be mounted on vacuum Electromagnetic clutch on pump pump shaft powers off immediately, and the clutch after power-off separates, and vacuum pump stops working, into sleep state, Vacuum pump completion vacuumizes.

The structure of the vacuum aided self-priming control device may also is that including water flow switch, sucking chamber component, electromagnetism from Clutch, vacuum pump and controller, specific structure are as follows: suction chamber is located at the top of eccentric reducer, and the conjunction of suction chamber top cover is equipped with Chamber cap is sucked, suction chamber center is stamped a through-hole, floating ball valve insert, floating ball, spaced motion mechanism, the limit are set in suction chamber Station movement mechanism includes the lever dolly for being connected to suction chamber base portion, and the first lever is rotatably equipped on lever dolly, and The second lever above the first lever, second lever one end, first lever one end are sequentially located at below floating ball valve insert, Floating ball valve insert lower end is connect with one end that the second lever stretches to below floating ball valve insert, and the first lever is located at floating ball One end below valve insert is connected by ball lever, U-shaped folder and floating ball, and the first lever, the second lever other end pass through lever Connection ring connection, the suction chamber is interior to be equipped with filter screen above suction chamber and water inlet pipe connectivity part, and water flow switch is mounted on Eccentric reducer top, electromagnetic clutch are mounted on vacuum pump shaft, and vacuum pump spindle passes through belt component and electromagnetic clutch Connect self priming pump main shaft, wherein floating ball valve insert with floating ball float in suction chamber up and down vertical shift to control exhaust pipe Opening and closing, after being safely operated 10-11 seconds after self-priming pump startup, the normally closed water flow switch that is connected with controller is logical Electricity, electromagnetic clutch energization is attracted, vacuum pump begins through exhaust pipe assembly and pumping is exhausted very to self priming pump and its water inlet pipe Sky, when water is floated with water level full of pump chamber, floating ball until floating ball valve insert is close to ball-cock assembly seal receptacle and closes exhaust pipe, simultaneously Baffle, the water flow switch of flow impact water flow switch in eccentric reducer disconnect immediately, the electricity being mounted on vacuum pump pump shaft Magnet clutch powers off immediately, and the clutch separation after power-off, vacuum pump stops working, and into sleep state, vacuum pump is completed to take out Vacuum.

Used vacuum pump is self-priming rotator vacuum pump, including main shaft, the pump housing, pump cover, rotary body, promotion pin and cunning Piece etc., the main shaft of self-priming rotator vacuum pump are connected the rotation of self priming pump main shaft drives, rotation by electromagnetic clutch with belt component Body drives the chamber inner surface of the slide plate fitting pump housing to start to rotate, and two pieces of adjacent slide plates form closed with pump housing chamber inner surface Chamber, during slide plate is rotated from exit to entrance: the volume of airtight chamber is gradually increased, pressure reduces, when this is close Air can be pressed into the airtight chamber when import is passed through in closed chamber room, and airtight chamber is full of air to rotation at pump discharge, about in The curved surface that the total length that two pieces of promotion pin banks between slide plate and slide plate that the heart is symmetrically installed are closed is constant, the cooperation pump housing is irregular is closed Cavity space is gradually reduced, pressure is gradually increased, and air can be discharged other than vacuum pump pump chamber when by outlet, this process week And it renews quickly to be moved to the air of entrance at pump housing outlet through pump chamber and pump chamber is discharged to complete to vacuumize.

Non-return valve is housed, the rubber gasket in non-return valve is up to tilt when pumping and running well on the outlet pipe of the pump housing Guarantee that medium clear unimpededly discharges, when pump has just started when vacuumizing since gravity rubber gasket is sagging And be attached on non-return valve, so that it is sealed pump chamber when pump cavity pressure is gradually reduced, external atmosphere pressure acts on rubber gasket Outside air is not allowed to enter.

The anhydrous dry rotation protection device of mechanical seal is fixed on above connection frame, to realize that machine is sealed by the pump housing-pump cover bolt It is anhydrous it is dry turn, auxiliary realizes that pump is anhydrous and directly initiates and complete self-priming.

Vacuum pump is assemblied on the suspension of centrifugal pump by parallels, belt component connected with electromagnetic clutch vacuum pump and from The axis of heart pump and transmission, the import of vacuum pump are connected to eccentric reducer or suction chamber by exhaust pipe assembly and are pumped with centrifugal pump Chamber communicates, and electromagnetic clutch energization actuation vacuum pump starts therewith after being centrifuged pump startup, the sky in centrifugal pump pump chamber and inlet tube Gas is constantly flow back in air through eccentric reducer or sealing buoyancy tank by vacuum pump, the pump chamber and the gas in inlet tube of sealing Being pumped declines cavity indoor pressure, and the water of priming reservoir progresses into pump chamber until full of pump chamber, water under atmospheric pressure The baffle that stream hits water flow switch disconnects water flow switch, solenoid valve power-failure close, and electromagnetic clutch power-off separation, vacuum pump stops It only works, self priming pump runs well.

Compared with prior art, the advantages of the utility model are as follows:

It 1, can rapid vacuumizing；

2, anhydrous can start, anhydrous dry turn；

3, after the completion of vacuum, vacuum pump can stop working, and into sleep state, energy consumption can be greatly decreased, Unit noise is reduced, the service life of vacuum pump is improved；

4, vacuum pump parasitism is mounted on centrifugal pump, is not necessarily to extra power；

5, compact-sized, it is small in size, it is light-weight, convenient for motor-driven.

Detailed description of the invention

Fig. 1 is the first control mode structural side view of the utility model.

Fig. 2 is the first control mode structure front view of the utility model.

Fig. 3 is second of control mode structural side view of the utility model.

Fig. 4 is the self-priming rotator vacuum pump structure front view of the utility model.

Fig. 5 is the self-priming rotator vacuum pump structural side view of the utility model.

Fig. 6 is the utility model suction chamber structure schematic diagram.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and examples:

Specific embodiment 1:

As Figure 1-Figure 5, inert vacuum assists self priming pump, including dry type to install centrifugal pump, vacuum pump 7, mechanical seal Anhydrous dry rotation protection device 12, the suspension top of the dry type installation centrifugal pump are equipped with parallels, are fixedly mounted above the parallels There is self-priming rotator vacuum pump, the dry type installs centrifugal pump, and dry type installation centrifugal pump includes the pump housing 17, the axial side of the pump housing 17 I.e. 17 leading flank of the pump housing is communicated with eccentric reducer, the axial 17 same shaft-cup of rear side of the other side, that is, pump housing of the pump housing 17 by suction casing 19 Conjunction is connected with pump cover 14, and the pump housing 17 is communicated with pump housing cleaning port lid 25 perpendicular to axial side, and pump cover 14 is backward sequentially coaxially It is connected with connection frame 11, suspension 9, suspension 9 is interior to be rotatably equipped with main shaft 2 by coaxial bearing, and 2 front end of main shaft passes through pump cover 14 simultaneously It protrudes into the pump housing 17, the circumferential oil groove for surrounding main shaft 2 is coaxially provided in 14 lid of pump cover, 2 front end of main shaft in pump cover 14 is same Axis is equipped with impeller 16.

Dry type installs the entrance location setting-up eccentricity reduced pipe 21 of centrifugal pump, installs water flow at the top of eccentric reducer 21 Switch 29, the exhaust pipe assembly 15 with solenoid valve 28, exhaust pipe assembly 15 are connected to the import of vacuum pump 7, and power supply line is by controlling Device connects solenoid valve 28 and electromagnetic clutch 27 by water flow switch 29.Self priming pump pump chamber and vacuum pump 7 are powered in solenoid valve 28 It is communicated when unlatching, the isolation in 28 power-failure close of solenoid valve.

The anhydrous dry rotation protection device 12 of mechanical seal includes the fuel tank being mounted on connection frame 11, has oil liquid in fuel tank, oil Case internal upper part is connected to by upper oil pipe with 14 inner oil sump top of pump cover, and lower part passes through under lower oil pipe and 14 inner oil sump of pump cover in fuel tank Portion's connection is made of circulation oil liquid circuit fuel tank and oil groove, realizes anhydrous dry rotation protection using the thermosyphon effect of oil liquid；

The outlet pipe nozzle connection of the pump housing 7 is equipped with non-return valve 22, and the rubber gasket 23 in non-return valve 22 is normal in pump It is up to tilt to guarantee that medium clear unimpededly discharges when operating, when pump has just started when vacuumizing since gravity is made It is sagging with rubber gasket 23 and be attached on non-return valve, when that cavity pressure is gradually reduced pump, external atmosphere pressure acts on rubber is close So that it is sealed pump chamber on packing 23 does not allow outside air to enter.

2 rear end of main shaft and external prime mover are sequentially connected, and when external prime mover is diesel engine, main shaft 2 passes through diesel engine Flexible Transmission shaft coupling 3 and diesel engine are sequentially connected.

As shown in Figure 4,5, as shown in Figure 4,5: self-priming rotator vacuum pump, including rotor and stator.

Rotor portion: 44 both ends of main shaft are equipped with bearing 50 and are used to support rotor rotation, and bearing is by locking nut 51 and lock Tight washer 52 is axially fixed on main shaft 44, and the rotary body 47 is stretched about central symmetry position has radial slot for installing Slide plate 46, rotary body 47 are a tight fit on main shaft 44, and in the bottom of 47 radial slot of rotary body, cooperation main shaft 44 drills together is used for Installation pushes pin 45, and the package of mechanical sealing linkage ring 48, which is mounted on main shaft 44, to rotate with the axis.

Stationary part: the pump housing 56 is equipped with import 62 and outlet 61, and interior hexagonal silk plug 55 is used for the oil extraction of the pump housing 56, driving End and anti-drive end pump cover 58 cooperate with the pump housing 56 to be sealed by the fastening of bolt 59, by O-ring 57, and the bearing 50 of rotor portion is installed To support rotor to rotate in the pump housing in driving end and anti-drive end pump cover 58；Drive end axle pressure cap 60 and anti-drive end axis Pressure cap 53, which is bolted, to be mounted on driving end and anti-drive end pump cover 58, gasket 54 is cooperated to seal.Machine is sealed quiet Ring 49 is mounted on stationary in driving end and anti-drive end pump cover 58.

The main shaft 44 of self-priming rotator vacuum pump is by electromagnetic clutch 27 and the driving rotation of belt component 4,47 band of rotary body The chamber inner surface that dynamic slide plate 46 is bonded the pump housing 56 starts to rotate, and two pieces of adjacent slide plates form closed with pump housing chamber inner surface Chamber, during slide plate 46 is rotated from exit to entrance: the volume of airtight chamber is gradually increased, pressure reduces, when this Air can be pressed into the airtight chamber when import is passed through by airtight chamber, airtight chamber full of air to rotating at pump discharge, about The total length for pushing pin 45 combined between the two pieces of slide plates 46 and slide plate of central symmetry installation is constant, cooperates the irregular song of the pump housing Face airtight chamber space is gradually reduced, pressure is gradually increased, and air can be discharged other than vacuum pump pump chamber when by outlet.This The air of entrance can quickly be moved at pump housing outlet through pump chamber pump chamber is discharged to complete to vacuumize in cycles by process.

Vacuum pump 7 is mounted on suspension 9 by parallels 8, and 9 inner main axis 2 of suspension is pierced by rear side of suspension 9, and main shaft 2 is pierced by section It is connect by belt component 4 and electromagnetic clutch 27 with 7 main shaft 44 of vacuum pump.Electromagnetic clutch 27 is normally opened, works as electromagnetic clutch Vacuum pump shaft 44 rotates and synchronous rotary with centrifugal pump main shaft 2 when 27 energizations are attracted, true when electromagnetic clutch 27, which powers off, to be separated Sky pump stops working.The import of vacuum pump 7 connects eccentric reducer 21 by exhaust pipe assembly 15, opens when solenoid valve 28 is powered When vacuum pump 7 communicated with self priming pump pump chamber.

Specific implementation method are as follows: after self-priming pump startup is safely operated 10-11 seconds, the normally closed water that is connected with controller It flows switch 29 to be powered, the energization of electromagnetic clutch 27 is attracted, vacuum pump 7 starts running, and solenoid valve 28, which is powered, to be opened, and vacuum pump 7 is opened Beginning, which is exhausted self priming pump and its water inlet pipe by exhaust pipe assembly 15, to be vacuumized.After several seconds, when water enters eccentric reducer The baffle of flow impact water flow switch 29, water flow switch 29 disconnect immediately when 21, and solenoid valve 28 also close immediately by power-off, same in this When, electromagnetic clutch 27 being connected with water flow switch 29, being mounted on vacuum pump pump shaft 44 powers off immediately, after power-off from Clutch separates, and vacuum pump 7 stops working, into sleep state (therefore referred to as inertia).Vacuum pump completion vacuumizes, and self priming pump starts It runs well.28 power-failure close of solenoid valve on exhaust pipe assembly 15 prevents from water from entering vacuum pump 7 damaging and leak, simultaneously The import gas leakage of self priming pump is caused after preventing vacuum pump 7 from stopping working.

Specific embodiment 2:

As shown in Fig. 2,3,6, a kind of inert vacuum auxiliary self priming pump, it is characterised in that: the structure of dry type installation centrifugal pump It is identical as specific embodiment 1, modification is mainly made on vacuum aided self-priming apparatus.

The connection of suction chamber 21 is mounted on 24 top of water inlet pipe, and the conjunction of 21 top cover of suction chamber is equipped with sucking chamber cap 38, sucking Chamber cap 38 has central through hole, and the above position of central through hole is equipped with non-return valve 18, exhaust pipe assembly 15, and exhaust pipe assembly 15 connects It is connected to the import of vacuum pump 7.Floating ball valve insert 36, floating ball 31, spaced motion mechanism are equipped in suction chamber 21, wherein ball-cock assembly Gasket 36 floats with floating ball 31 and moves up and down vertically in suction chamber 21, floating ball valve insert 36 by spaced motion mechanism with Floating ball 31 connects, in the central through hole for drive floating ball valve insert 36 to block up sucking chamber cap 38 in upward float by floating ball 31 with Close exhaust pipe assembly.

Spaced motion mechanism includes the lever dolly 42 for being connected to sucking 38 bottom of chamber cap, and the is equipped on lever dolly 42 One lever 34, and the second lever 35 above the first lever 34,35 one end of the second lever, 34 one end of the first lever are successively Positioned at 37 lower section of ball-cock assembly seal receptacle, 37 lower end of ball-cock assembly seal receptacle and the second lever 35 stretch to 37 lower section of ball-cock assembly seal receptacle One end connection, one end that the first lever 34 is located at 37 lower section of ball-cock assembly seal receptacle are connected by ball lever 32, U-shaped folder 33 and floating ball 31 Connect, the first lever 34,35 other end of the second lever are connected by lever connection ring 41, be located in suction chamber 21 suction chamber 21 with into Filter screen 43 is equipped with above 24 connectivity part of water pipe.

After being safely operated 10-11 seconds after self-priming pump startup, the normally closed water flow switch 29 being connected with controller is powered, The energization of electromagnetic clutch 27 is attracted, vacuum pump 7 begins through exhaust pipe assembly 15 and pumping is exhausted to self priming pump and its water inlet pipe Vacuum, when water is floated with water level full of pump chamber, floating ball until floating ball valve insert is close to ball-cock assembly seal receptacle and closes exhaust pipe, together When eccentric reducer in baffle, the water flow switch of flow impact water flow switch 29 disconnect immediately, be mounted on vacuum pump pump shaft Electromagnetic clutch 27 power off immediately, the clutch separation after power-off, vacuum pump stops working, into sleep state, vacuum pump Completion vacuumizes.Self priming pump starts to run well.Float switch prevents from water from entering vacuum pump 7 damaging and leak.Exhaust pipe Non-return valve 18 on component 15 causes the import gas leakage of self priming pump after preventing vacuum pump 7 from stopping working.

Claims (5)

1. a kind of inert vacuum assists self priming pump, it is characterised in that: install centrifugal pump including dry type, the dry type installs centrifugal pump Suspension above be equipped with parallels, self-priming rotator vacuum pump is fixedly installed with above the parallels, the dry type installs centrifugal pump, Its structure includes the pump housing, and pump housing front end is furnished with suction casing, and setting-up eccentricity reduced pipe before suction casing, the pump housing is perpendicular to axial one There is water-output flange in side, and water-output flange front end connects a check-valves, and pump housing rear end is furnished with pump cover, is equipped with circumferential direction on the outside of pump cover seal chamber The oil groove of main shaft is surrounded, pump cover is successively connected with connection frame, suspension backward, bearing and main shaft is equipped in suspension, main shaft exists Driving end is extended out across suspension, is pumped for connecting prime mover, and by belt, belt pulley, electromagnetic clutch and vacuum pump Axis is connected, and then realizes and rotate or disconnect simultaneously with self priming pump main shaft, and main shaft anti-drive end passes through pump cover and enters the pump housing, impeller position It in pump housing runner center, and is mounted on main shaft, the anhydrous dry rotation protection device of mechanical seal, packet is equipped with above the connection frame The fuel tank being mounted on connection frame is included, there is oil liquid in fuel tank, fuel tank internal upper part is connected to by upper oil pipe with pump cover inner oil sump top, Lower part is connected to by lower oil pipe with pump cover inner oil sump lower part in fuel tank, and circulation oil liquid circuit is made of fuel tank and oil groove, utilizes oil The thermosyphon effect of liquid realizes anhydrous dry rotation protection.

2. a kind of inert vacuum assists self priming pump according to claim 1, it is characterised in that: the vacuum aided self-priming control The structure of device is: including water flow switch, exhaust pipe assembly, solenoid valve, electromagnetic clutch, vacuum pump and controller, water flow is opened The normally closed top for being mounted on eccentric reducer is closed, solenoid valve is normally closed to be mounted on exhaust pipe assembly, the normally opened installation of electromagnetic clutch On vacuum pump spindle, vacuum pump spindle connects self priming pump main shaft with electromagnetic clutch by belt component, and water flow switch passes through The power supply of the flow cavitation result solenoid valve and electromagnetic clutch in eccentric reducer is monitored to realize automatic start-stop, is mounted on suction casing The eccentric reducer top installation water flow switch of front end and the exhaust pipe assembly equipped with solenoid valve, are transported safely after self-priming pump startup After row 10-11 seconds, the normally closed water flow switch being connected with controller is powered, and electromagnetic clutch energization is attracted, vacuum pump starts Operating, solenoid valves are opened, and vacuum pump, which begins through exhaust pipe assembly self priming pump and its water inlet pipe are exhausted, to be vacuumized, After several seconds, when water enters eccentric reducer, the baffle of flow impact water flow switch, water flow switch disconnect immediately, solenoid valve also with I.e. power-off is closed, and simultaneously, electromagnetic clutch being connected with water flow switch, being mounted on vacuum pump pump shaft breaks immediately Electricity, the clutch after power-off separate, and vacuum pump stops working, and into sleep state, vacuum pump completion is vacuumized.

3. a kind of inert vacuum assists self priming pump according to claim 1, it is characterised in that: the vacuum aided self-priming control The structure of device may also is that including water flow switch, sucking chamber component, electromagnetic clutch, vacuum pump and controller, specific structure Are as follows: suction chamber is located at the top of eccentric reducer, and the conjunction of suction chamber top cover is equipped with sucking chamber cap, and it is logical that suction chamber center is stamped one Hole, floating ball valve insert, floating ball, spaced motion mechanism are set in suction chamber, and the spaced motion mechanism includes being connected to suction chamber The lever dolly in base portion is rotatably equipped with the first lever on lever dolly, and the second lever above the first lever, Second lever one end, first lever one end are sequentially located at below floating ball valve insert, floating ball valve insert lower end and second Lever stretches to the connection of one end below floating ball valve insert, and one end that the first lever is located at below floating ball valve insert passes through floating ball Bar, U-shaped folder and floating ball connect, and the first lever, the second lever other end are connected by lever connection ring, be located in the suction chamber Filter screen is equipped with above suction chamber and water inlet pipe connectivity part, water flow switch is mounted on eccentric reducer top, electromagnetic clutch peace On vacuum pump shaft, vacuum pump spindle connects self priming pump main shaft with electromagnetic clutch by belt component, wherein ball-cock assembly is close Packing floats in suction chamber with floating ball, and vertical shift is pacified after self-priming pump startup up and down with controlling the opening and closing of exhaust pipe After 10-11 seconds, the normally closed water flow switch being connected with controller is powered row for the national games, electromagnetic clutch energization actuation, vacuum pump Begin through exhaust pipe assembly self priming pump and its water inlet pipe be exhausted and vacuumize, when water full of pump chamber, floating ball on water level It floats until floating ball valve insert is close to ball-cock assembly seal receptacle and closes exhaust pipe, while the flow impact water flow in eccentric reducer is opened Baffle, the water flow switch of pass disconnect immediately, and the electromagnetic clutch being mounted on vacuum pump pump shaft powers off immediately, the clutch after power-off Device separation, vacuum pump stops working, and into sleep state, vacuum pump completion is vacuumized.

4. inert vacuum according to claim 1 assists self priming pump, it is characterised in that: used vacuum pump is self-priming Rotator vacuum pump, including main shaft, the pump housing, pump cover, rotary body, push pin and slide plate etc., the main shaft of self-priming rotator vacuum pump by Electromagnetic clutch connects the rotation of self priming pump main shaft drives with belt component, and rotary body drives the chamber inner surface of the slide plate fitting pump housing Start to rotate, two pieces of adjacent slide plates and pump housing chamber inner surface form airtight chamber, and slide plate is rotated from exit to entrance During: the volume of airtight chamber is gradually increased, pressure reduces, and when import is passed through by the airtight chamber, air can be pressed into this Airtight chamber, airtight chamber rotate full of air at pump discharge, about two pieces of central symmetry installation between slide plate and slide plate The curved surface airtight chamber space that the total length for pushing pin bank to close is constant, the cooperation pump housing is irregular is gradually reduced, pressure is gradually increased, Air can be discharged other than vacuum pump pump chamber when by outlet, this process in cycles can be quickly by the air of entrance through pumping Chamber, which is moved at pump housing outlet, is discharged pump chamber to complete to vacuumize.

5. inert vacuum according to claim 1 assists self priming pump, it is characterised in that: the outlet pipe nozzle of the pump housing connects It is logical that non-return valve is installed.