CN203394772U - Light sump oil anti-explosion self-priming pump - Google Patents
Light sump oil anti-explosion self-priming pump Download PDFInfo
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- CN203394772U CN203394772U CN201320398311.9U CN201320398311U CN203394772U CN 203394772 U CN203394772 U CN 203394772U CN 201320398311 U CN201320398311 U CN 201320398311U CN 203394772 U CN203394772 U CN 203394772U
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- centrifugal pump
- vacuum
- pumping pipeline
- priming
- liquid container
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Abstract
The utility model provides a light sump oil anti-explosion self-priming pump. The light sump oil anti-explosion self-priming pump is characterized in that an suction inlet of a centrifugal pump is placed in a submerged manner to reach the bottom of a liquid storage tank, a diaphragm type self-priming machine is provided with two suction inlets, one suction inlet is a liquid storage tank vacuum-pumping pipeline, the other suction inlet is a centrifugal pump vacuum-pumping pipeline, the liquid storage tank vacuum-pumping pipeline is connected with the top end of the liquid storage tank, and the centrifugal pump vacuum-pumping pipeline is connected with the outlet of the centrifugal pump. The light sump oil anti-explosion self-priming pump has the advantages that no residual gas exists in the tank, a nitrogen charging interface is additionally arranged, valves are mounted on the liquid storage tank vacuum-pumping pipeline, the centrifugal pump vacuum-pumping pipeline and an outlet pipeline of the centrifugal pump, so that the liquid storage tank vacuum-pumping pipeline, the centrifugal pump vacuum-pumping pipeline are enabled to form two independent loops, and the volatilization of an easily-gasifying medium in the liquid storage tank and the automatic pump priming of the centrifugal pump are carried out independently without mutual interference. A waste gas recovery pipeline is additionally provided with a check valve to prevent the waste gas from refluxing, and the vacuum-pumping effect of the self-priming machine is guaranteed. Inflammable and explosive gas is isolated from a transmission device by insulating rubber, and the safety is guaranteed.
Description
Technical field
The utility model relates to the explosion-proof self-priming pump of a kind of Novel light sump oil.
Background technique
Light sump oil contains the inflammable and explosive easy vaporized media of part, and liquid level pressure gasify lower than its saturation vapour pressure, and common self-priming pump cannot be carried.Following several mode is mainly taked in the conveying of light sump oil at present: 1, long shaft submerged pump, during this pump startup, impeller is immersed in medium, thereby starts easily, does not have exhaust and the problem of finding time, and does not need to consider the problem of suction lift and is used widely.But also just because of its motor on liquid level, rotor part is under liquid level, the long difficulty of processing that causes of axle is large, pump shaft amplitude of fluctuation is amplified, bearing life is short, frequency of maintenance is high.Because axle is long, adopt multiple spot sliding bearing to support, once the sliding bearing in airtight liquid container is lubricated bad, dry grinding easily produces spark, thereby ignites flammable explosive gas in tank, initiation fire.These several years Frequent Accidents especially, affect very large.2, this pump of common self-priming pump is negative pressure self-suction feed flow, at the bottom of Pump Suction Nozzle gos deep into tank, suction head is subject to the restriction of local barometric pressure and the net positive suction head of pump own cannot realize the conveying of easy vaporized media, some self-priming pump vacuum pumping devices are explosion-proof, the antifreeze function of tool not, cannot meet light sump oil and carry the requirement to safety anti-explosive and outdoor anti-freezing.3, the pump head of submerged pump and motor are all immersed in medium, and motor easily leaks electricity, Security extreme difference.
Summary of the invention
The purpose of this utility model is the deficiency existing in above-mentioned technology, provides a kind of
the light explosion-proof self-priming pump of sump oil,by
centrifugal pump,
diaphragm type self-priming machine, inflated with nitrogen interface threepart forms
, self-priming machine is from liquid containerwith
centrifugal pumpexporting two places vacuumizes
,tank internal pressure stop vacuumizing during lower than setting value and from nitrogen access port inflated with nitrogen to assist centrifugal pump to draw medium in tank.
The purpose of this utility model is achieved in that and comprises centrifugal pump, diaphragm type self-priming machine, inflated with nitrogen interface, it is characterized in that, centrifugal pump suction port gos deep into liquid down at the bottom of liquid container tank, diaphragm type self-priming machine suction port is two, one is liquid container vacuum-pumping pipeline, be connected with liquid container top, another is centrifugal pump vacuum-pumping pipeline, is connected with outlet of centrifugal pump.During turn on pump, self-priming machine first moves, and liquid container vacuum-pumping pipeline is bled, and liquid container internal pressure reduces, when tank internal pressure lower than tank in easily this component gasification during the saturation vapour pressure of gasification component, up after this component gasification, be suspended in upper end,
liquid container vacuum-pumping pipelineentrance is arranged on upper end can guarantee gas noresidue in tank, along with constantly bleeding, in tank, in medium, easily gasification component all gasifies and is pumped, be transported to pump discharge and enter outlet line or inletting device exhaust gas recycling tube line, the remaining medium that is difficult for gasification, because continuing gasification without medium, tank internal pressure constantly reduces, and reaches after setting value
liquid container vacuum-pumping pipelineclose, on liquid container, nitrogen inlet is opened, and passes into nitrogen, makes liquid level pressure become malleation from negative pressure.Self-priming machine
centrifugal pump vacuum-pumping pipelinestart to bleed, treat in centrifugal pump entrance pipe that gas exhausts, in pump, be full of medium after self-priming machine stop bleeding, centrifugal pump running starts medium under normal conveying liquid.
The beneficial effects of the utility model: 1, self-priming machine increases
liquid container vacuum-pumping pipeline alsobe connected to liquid container top, can guarantee gas noresidue in tank, at the bottom of having made up common self-priming pump suction port and being located at tank, self-priming machine from
centrifugal pump vacuum-pumping pipelinevacuumize, only have easily vaporized media gasification in pipeline, cause in tank easily vaporized media gasification not exclusively, when centrifugal pump sucts medium because of medium second gasification, the shortcoming that suction line cutout cannot move; 2, the gas rear tank internal pressure of finding time becomes negative pressure in liquid container, and centrifugal pump suction head is subject to the restriction of liquid level pressure and the net positive suction head of pump own cannot suct medium, adds
inflated with nitrogen interface, after pumping with gas in convenient tank, can tank internal pressure be become to malleation from negative pressure to inflated with nitrogen in tank, guarantee centrifugal pump operating conditions.3, liquid container vacuum-pumping pipeline, centrifugal pump vacuum-pumping pipeline and outlet of centrifugal pump pipeline mounted valve, make liquid container vacuum-pumping pipeline, centrifugal pump vacuum-pumping pipeline form two independently loops, thereby guaranteed easily gasifying medium volatilization and the automatic pump priming mutual noninterference of centrifugal pump in liquid container.Exhaust gas recycling tube line adds one-way valve and prevents exhaust gas recirculation, has guaranteed the effect that self-priming machine vacuumizes.4, adopt diaphragm type self-priming machine to vacuumize, flammable explosive gas and transmission device are isolated by the rubber insulating, thereby have avoided producing because of transmission device friction the generation that spark initiation gas causes security incident.
accompanying drawing explanation:
Fig. 1 is the utility model structural representation
embodiment:
Below in conjunction with accompanying drawing, concrete enforcement of the utility model is described further:
As shown in Figure 1, the light explosion-proof self-priming pump of sump oil is comprised of centrifugal pump 14 and diaphragm type self-priming machine 7, wherein 7 minutes two places of diaphragm type self-priming machine vacuumize: i.e. liquid container vacuum-pumping pipeline 6 and centrifugal pump vacuum-pumping pipeline 8, wherein liquid container vacuum-pumping pipeline 6 is connected to liquid container top, centrifugal pump vacuum-pumping pipeline 8 communicates with centrifugal pump suction line 13, and centrifugal pump suction line 13 is deep into liquid container bottom.Inflated with nitrogen pipeline 3 is established at liquid container top.During pump operation, first start diaphragm type self-priming machine 7, valve 5 is opened, valve 2, valve 10, valve 11 is closed, diaphragm type self-priming machine 7 is taken out the interior gas of liquid container 1 and is discharged to exhaust gas recycling tube line 9 from liquid container vacuum-pumping pipeline 6, after in medium, easily gasification component all flashes to gas and takes away, when the decline of tank internal pressure reaches pressure gauge 4 setting value, valve 2 is opened, valve 5, valve 10, valve 11 is closed, inflated with nitrogen, tank internal pressure rises, reaching certain pressure late gate 10 opens, diaphragm type self-priming machine 7 is discharged to pump discharge or Waste gas outlet from centrifugal pump vacuum-pumping pipeline 8 extraction centrifugal pump suction lines 13 and the interior gas of centrifugal pump 14 through exhaust gas recycling tube line 9, centrifugal pump 14 is filled rear self-starting, valve 11 is opened, centrifugal pump commencement of commercial operation.
Liquid container 1 is arranged on underground, and centrifugal pump 14 and diaphragm type self-priming machine 7 are arranged on the ground, and liquid container 1 open top connects nitrogen, pressure gauge 4 and liquid container vacuum-pumping pipeline 6, and centrifugal pump suction line 13 reaches liquid container 1 bottom.Valve 2 is arranged on inflated with nitrogen pipeline 3, valve 5 is arranged in liquid container vacuum-pumping pipeline 6, valve 10 is arranged in centrifugal pump vacuum-pumping pipeline 8, valve 11 is arranged on outlet of centrifugal pump pipeline 12, centrifugal pump vacuum-pumping pipeline 8 is connected with diaphragm type self-priming machine 7 suction ports with liquid container vacuum-pumping pipeline 6, and exhaust gas recycling tube line 9 is connected with 7 outlets of diaphragm type self-priming machine.
Claims (2)
1. the explosion-proof self-priming pump of light sump oil, comprise centrifugal pump, diaphragm type self-priming machine, inflated with nitrogen interface, it is characterized in that, the through liquid of centrifugal pump suction port is down at the bottom of liquid container tank, diaphragm type self-priming machine suction port is two, and one is liquid container vacuum-pumping pipeline, and another is centrifugal pump vacuum-pumping pipeline, liquid container vacuum-pumping pipeline is connected with liquid container top, and centrifugal pump vacuum-pumping pipeline is connected with outlet of centrifugal pump.
2. the explosion-proof self-priming pump of a kind of light sump oil according to claim 1, it is characterized in that, liquid container is arranged on underground, centrifugal pump and diaphragm type self-priming machine are arranged on the ground, liquid container open top connects nitrogen, pressure gauge, and liquid container vacuum-pumping pipeline, centrifugal pump suction line reaches liquid container bottom, valve installation is on inflated with nitrogen pipeline, valve installation is in liquid container vacuum-pumping pipeline, valve installation is in centrifugal pump vacuum-pumping pipeline, valve installation is on outlet of centrifugal pump pipeline, centrifugal pump vacuum-pumping pipeline is connected with diaphragm type self-priming machine suction port with liquid container vacuum-pumping pipeline, exhaust gas recycling tube line is connected with the outlet of diaphragm type self-priming machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398311.9U CN203394772U (en) | 2013-07-05 | 2013-07-05 | Light sump oil anti-explosion self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398311.9U CN203394772U (en) | 2013-07-05 | 2013-07-05 | Light sump oil anti-explosion self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394772U true CN203394772U (en) | 2014-01-15 |
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ID=49906307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320398311.9U Expired - Lifetime CN203394772U (en) | 2013-07-05 | 2013-07-05 | Light sump oil anti-explosion self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821730A (en) * | 2014-02-26 | 2014-05-28 | 崔正军 | Novel chemical engineering self-priming pump |
| CN105298856A (en) * | 2015-11-16 | 2016-02-03 | 辽宁格瑞特泵业有限公司 | Self-suction type novel liquid sulfur pump |
| CN107288894A (en) * | 2016-04-13 | 2017-10-24 | 吕彦龙 | Solve a kind of scheme and device that pump is unable to low liquid level self-priming |
| CN111102207A (en) * | 2019-12-31 | 2020-05-05 | 吴庆林 | Desulfurization washing pool water pump for waste gas treatment |
-
2013
- 2013-07-05 CN CN201320398311.9U patent/CN203394772U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821730A (en) * | 2014-02-26 | 2014-05-28 | 崔正军 | Novel chemical engineering self-priming pump |
| CN105298856A (en) * | 2015-11-16 | 2016-02-03 | 辽宁格瑞特泵业有限公司 | Self-suction type novel liquid sulfur pump |
| CN107288894A (en) * | 2016-04-13 | 2017-10-24 | 吕彦龙 | Solve a kind of scheme and device that pump is unable to low liquid level self-priming |
| CN111102207A (en) * | 2019-12-31 | 2020-05-05 | 吴庆林 | Desulfurization washing pool water pump for waste gas treatment |
| CN111102207B (en) * | 2019-12-31 | 2021-01-08 | 山西鑫途化工有限公司 | Desulfurization washing tank for exhaust-gas treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |