A kind of Novel chemical self-priming pumpTechnical field
The utility model relates toa kind of Novel chemical self-priming pump.
Background technique
Constantly perfect along with self-priming pump technology, its Security, stability are more and more higher, and the application area that self-priming pump is put on operating mode under dielectric fluid is more and more wider.Especially the diaphragm type self-priming machine with automatical control system is used widely with the outstanding performance of the features such as it is safe and reliable, simple to operate, suction capacity is strong very high operating mode of security requirement such as inflammable and explosive in petrochemical industry especially.But this kind of self-priming machine exists: preparation is many, complex structure; And cost is high; The problem such as in the non-transformer situations such as field, cannot use.Field fire consumption is huge, and common self-priming apparatus cannot be realized in the high-capacity pump short time and starting, the requirement of self-priming again at once after cutout.
Summary of the invention
The purpose of this utility model is the deficiency existing in above-mentioned technology, a kind of Self-priming pump is reliably provided, mainly under the higher dielectric fluid of the security requirements such as inflammable and explosive, tool Korrosionsmedium, put on and large flow liquid under put on operating mode, and put on operating mode under liquid in the non-transformer situation of field.
The purpose of this utility model is achieved in that and comprisescentrifugal pump, clutch, vacuum pumping device, mechanical seal and auxiliary system thereof.It is characterized in that, centrifugal pump is connected with motor or diesel engine by coupling, and vacuum pumping device is connected with motor or diesel engine by the belt pulley that is contained in pump shaft or motor shaft.In the insertion groove tank of centrifugal pump suction line one end, the other end is connected with centrifugal pump entrance, the single mechanical end face seal of additional washing solution or double mechanical seal are arranged in the Seal cage of centrifugal pump, being single mechanical end face seal as scene can provide outside washing solution, is auxiliary system otherwise select double mechanical seal to join liquid container.Liquid container is arranged on pump-foot or away from floor installation depending on on-site actual situations.Pump discharge threeway is arranged on the outlet port of centrifugal pump, is connected with the entrance of pump discharge pipeline and vacuum pumping device.The belt pulley place of vacuum pumping device end arranges clutch, vacuumizes to realize the disengagement shutdown finishing between rear vacuum pumping device and motor/diesel engine.
Clutch adopts hydraulic diaphragm or electrodynamic induction formula.Hydraulic diaphragm clutch is realized shutdown or the running of vacuum pumping device by sucting the pressure of medium, shutdown or the running of the electrical signal control vacuum system that electrodynamic induction formula clutch spreads out of by liquid level sensor.For preventing that medium is lubricated causes damage, mechanical seal to adopt additional washing solution because centrifugal pump idle running cannot provide to mechanical seal for mechanical seal in centrifugal pumpsingle mechanical end face sealordouble mechanical sealadd auxiliary system and be the mode of liquid container to mechanical seal feed flow, to prevent mechanical seal dry grinding.Self-priming pump structural type is various, and point horizontal fixed, Horizontal manual pushing-type, vertical fixed, four kinds of forms of vertical hand push, can adapt to multiple use occasion.
The beneficial effects of the utility model: 1, vacuum pumping device and centrifugal pump are driven by a motor or diesel engine, without or electric controling element is reduced to minimum, overall structure is simpler compact, cost is lower, stable performance, failure rate is low; 2, the vacuum pump type vacuum pumping device speed of exhaust is large, self-priming time is short, heavy caliber centrifugal pump completes in also can 1 minute and sucts, the small-bore time is shorter.Diaphragm type vacuum pumping device is safe, suction capacity is strong, suction head is high.Can select vacuum pump type or diaphragm type vacuum pumping device according to actual conditions, substantially contain all operating modes of chemical enterprise; 3, vacuum pumping device and centrifugal pump adopt a driving arrangement, have saved the energy, prepare more succinct.Reduce cost.4, if equipment operation vacuum pumping device just always in access state at any time, in the time there is medium cutout, in vacuum pumping device, medium liquid level declines, clutch control switch starts, vacuum pumping device autoboot, has prevented that centrifugal pump from dallying for a long time, has solved when centrifugal pump suction line is interior occurs cutout, common self-priming apparatus needs manually-operable, cannot convert in time the problem of pump priming state to; 5, in self-priming pump case, pipeline, do not deposit medium, resistance to frost is good, is applicable to north of china in winter and uses; 6, select single end face to rinse mechanical seal or double mechanical seal outward, even still can ensure that mechanical seal can not damage because of dry grinding when self-priming pump dallies, stops; 7, centrifugal pump adopts motor or Diesel Driven, and electric clutch can be taked the power supply of the portable power source such as field power supply or storage battery.Have non-transformer to use, solved the problem of field use non-transformer situation, Applicable scope is wider; 7, structural type is various, is applicable to various occasions and uses.
brief description of the drawings:
Fig. 1 is the utility model A type structural representation
Fig. 2 is the utility model Type B Novel chemical self-priming pump structural representation
Fig. 3 is the utility model C type Novel chemical self-priming pump structural representation
Fig. 4 is the utility model D type Novel chemical self-priming pump structural representation
Fig. 5 is the utility model E type Novel chemical self-priming pump structural representation
Fig. 6 is the utility model F type Novel chemical self-priming pump structural representation
Fig. 7 is horizontal novel chemical industry self-priming pump structural representation
Fig. 8 is Horizontal manual pushing-type Novel chemical self-priming pump structural representation
Fig. 9 is novel vertical type chemical industry self-priming pump structural representation
Figure 10 is vertical hand push Novel chemical self-priming pump structural representation.
embodiment:
Below in conjunction with accompanying drawing, concrete enforcement of the present invention is described further:
As shown in Figure 1, what A type structure adopted is diaphragm type clutch, diaphragm type vacuum pumping device, as shown in Figure 2, what Type B structure adopted is electric clutch, diaphragm type vacuum pumping device, as shown in Figure 3, what C type structure adopted is electric clutch, gas ring vacuum pump formula vacuum pumping device, as shown in Figure 4, what D type structure adopted is, diaphragm type clutch, gas ring vacuum pump formula vacuum pumping device, as shown in Figure 5, what E type structure adopted is electric clutch, Roots pump formula vacuum pumping device, as shown in Figure 6, what F type structure adopted is diaphragm type clutch, Roots pump formula vacuum pumping device, as shown in Figure 7, horizontal type structure, as shown in Figure 8, Horizontal manual pushing-type structure, vertical structure as shown in Figure 9, as shown in Figure 10, vertical hand push structure.
From Fig. 1-Figure 10, centrifugal pump 8 and vacuum pumping device adopt a motor or diesel engine 11 to do power.Centrifugal pump 8 adopts coupling 10 to be connected with motor or diesel engine 11; vacuum pumping device is separated membrane type 3, gas ring vacuum pump formula 14 and Roots pump formula 15; totally three kinds; by belt pulley 9 transmissions that hang on centrifugal pump pump shaft or motor/diesel oil arbor; the belt pulley place of vacuum pumping device end arranges diaphragm type clutch 4 or electric clutch 13, vacuumizes to realize the disengagement shutdown finishing between rear vacuum pumping device 3 and motor/diesel engine 11.Clutch adopts hydraulic diaphragm or electrodynamic induction formula.Hydraulic diaphragm clutch is realized shutdown or the running of vacuum pumping device by sucting the pressure of medium, shutdown or the running of the electrical signal control vacuum system that electrodynamic induction formula clutch spreads out of by liquid level sensor.After motor or diesel engine starting, clutch is in coupled condition, and centrifugal pump and vacuum pumping device turn round simultaneously, now in centrifugal pump, are full of air, and the gas in vacuum pumping device extraction centrifugal pump and suction line is to centrifugal pump pump priming.When centrifugal pump 8 and the interior gas of suction line 2 are evacuated, medium enters vacuum pumping device, touches clutch switch, and vacuum pumping device and centrifugal pump pump shaft or the disengagement of motor/diesel oil arbor stop vacuumizing.Centrifugal pump production run is taken out medium in groove tank 1.Thereby realize the automatic pump priming of centrifugal pump.In the time that cutout appears in centrifugal pump, in vacuum pumping device, medium liquid level declines, and clutch engages again, drives vacuum pumping device to centrifugal pump pump priming, ensures the normal without running of centrifugal pump.Whole process is changed automatically without artificial guard.For preventing that medium is lubricated causes damage, mechanical seal 6 to adopt additional washing solution because centrifugal pump idle running cannot provide to mechanical seal for mechanical seal in centrifugal pumpsingle mechanical end face sealordouble mechanical sealadd auxiliary system and be the mode of liquid container 7 to mechanical seal feed flow, to prevent mechanical seal dry grinding.Self-priming pump structural type is various, and point horizontal fixed, Horizontal manual pushing-type, vertical fixed, four kinds of forms of vertical hand push, can adapt to multiple use occasion.The driving arrangement of self-priming pump is motor or diesel engine;
Drive the belt pulley of vacuum pumping device to be located on centrifugal pump pump shaft end or motor/diesel oil arbor; Vacuum pumping device is separated three kinds of membrane types, gas ring vacuum pump formula, Roots pump formula; Two kinds of clutch separation membrane type clutch and electric clutchs; Self-priming pump form is divided horizontal fixed, Horizontal manual pushing-type, vertical fixed, four kinds of forms of vertical hand push; Select additional washing solutionsingle mechanical end face sealmode to mechanical seal feed flow.Selectdouble mechanical sealadd auxiliary system and be the mode of mechanical seal liquid container to mechanical seal feed flow.
Centrifugal pump 8 is connected with motor or diesel engine 11 by coupling 10, and vacuum pumping device is connected with motor or diesel engine by the belt pulley 9 that is contained in pump shaft or motor shaft.In centrifugal pump suction line 2 one end insertion groove tanks 1, the other end is connected with centrifugal pump 8 entrances, the single mechanical end face seal of additional washing solution or double mechanical seal 6 are arranged in the Seal cage of centrifugal pump 8, being single mechanical end face seal as scene can provide outside washing solution, is auxiliary system otherwise select double mechanical seal to join liquid container 7.Liquid container is arranged on pump-foot or away from floor installation depending on on-site actual situations.Pump discharge threeway 5 is arranged on the outlet port of centrifugal pump 8, is connected with the entrance of pump discharge pipeline and vacuum pumping device.Vacuum pumping device is separated 15 3 kinds of membrane types 3, gas ring vacuum pump formula 14, Roots pump formula; the belt pulley place of vacuum pumping device end arranges diaphragm type clutch 4 or electric clutch 13, vacuumizes to realize the disengagement shutdown finishing between rear vacuum pumping device 3 and motor/diesel engine 11.Clutch adopts hydraulic diaphragm and electrodynamic induction formula; hydraulic diaphragm clutch 4 is realized shutdown or the running of vacuum pumping device, shutdown or the running of the electrical signal control vacuum system that electric clutch 13 spreads out of by the liquid level sensor 12 of installing in vacuum pumping device by sucting the pressure of medium in vacuum pumping device.According to the actual service condition of pump, be designed to A, B, C, D, E, six kinds of structures of F, and have four kinds of forms, be i.e. horizontal fixed, Horizontal manual pushing-type, vertical fixed, vertical hand push.The driving arrangement of self-priming pump is motor or diesel engine; Drive the belt pulley of vacuum pumping device to be located on centrifugal pump pump shaft end or motor/diesel oil arbor; Vacuum pumping device is to separate three kinds of membrane types, gas ring vacuum pump formula, Roots pump formula; It is two kinds of clutch and electric clutchs that clutch is separated membrane type; Self-priming pump form is divided horizontal fixed, Horizontal manual pushing-type, vertical fixed, four kinds of forms of vertical hand push; Select additional washing solutionsingle mechanical end face sealmode to mechanical seal feed flow, selectdouble mechanical sealadd auxiliary system and be the mode of mechanical seal liquid container to mechanical seal feed flow.