CN201535264U - Canned motor pump with check valve at water outlet - Google Patents

Canned motor pump with check valve at water outlet Download PDF

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Publication number
CN201535264U
CN201535264U CN200920075239XU CN200920075239U CN201535264U CN 201535264 U CN201535264 U CN 201535264U CN 200920075239X U CN200920075239X U CN 200920075239XU CN 200920075239 U CN200920075239 U CN 200920075239U CN 201535264 U CN201535264 U CN 201535264U
Authority
CN
China
Prior art keywords
pump
check valve
canned motor
liquid
pump housing
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.)
Expired - Lifetime
Application number
CN200920075239XU
Other languages
Chinese (zh)
Inventor
韩元平
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.)
Hefei Xinhu Canned Motor Pump Co., Ltd.
Original Assignee
SHANGHAI XINHU ELECTRIC MACHINE FACTORY CO Ltd
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 SHANGHAI XINHU ELECTRIC MACHINE FACTORY CO Ltd filed Critical SHANGHAI XINHU ELECTRIC MACHINE FACTORY CO Ltd
Priority to CN200920075239XU priority Critical patent/CN201535264U/en
Application granted granted Critical
Publication of CN201535264U publication Critical patent/CN201535264U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a canned motor pump with a check valve at the water outlet thereof, which comprises a pump body and a canned motor connected with the pump body. The pump body is also provided with a check valve, and the check valve is arranged at the outlet of the pump. The utility model greatly ensures that the liquid in the liquid heating equipment can not flow back to cause dry burning to damage the liquid heating equipment due to the suspension of water supply or the pump failure, and also ensures that when the pump body cracks, no leakage can occur to damage the human body and to pollute the environment; the upper and lower thrust bearings effectively ensure the product efficiency when the impeller string quantity is in the proper working position; and the medium in the circulation loop can pass through the gap between the stator shielding sleeve and the rotor shielding sleeve, so that the ceramic shaft and the ceramic bearing can be well lubricated, thereby reducing the wear rate of the ceramic shaft and the ceramic bearing, lowering the noise, and greatly prolonging the service life of the canned motor pump.

Description

A kind of shielded electric-pump of water outlet band safety check
Technical field
The utility model relates to a kind of equipment for liquid transportation, particularly be a kind of shielded electric-pump that is applicable to industries such as solar energy, boiler, medicine, chemical industry, oil, refrigeration.
Background technique
The shielded electric-pump of present commonplace use is the centrifugal pump that impeller is installed, the impeller quantity of this centrifugal pump is directly proportional with lift, increase along with the increasing of lift, but when impeller is increased to certain quantity and reaches capacity in its limited space after, its lift also along with obtaining qualification, can not adapt to high-lift needs.Be extensive use of a kind of screw pump in refrigeration and chemical industry; be used for carrying and have corrosive, hypertoxic, radioactive liquid; its structure be pump housing inner screw with the rotatingshaft of motor between be connected by the axle envelope; after this axle is enclosed in long use; can be aging damaged; need uninterrupted the shutdown to change or repair; increased maintenance cost; reduced working efficiency; otherwise can cause generation leak of liquid when carrying liquid, and especially carry to have corrosivity, severe toxicity, radioactive liquid, both human body was damaged; befouling environment should not extensively be promoted again.And liquid heating apparatus cutting off the water or pump causes the liquid return dry combustion method when fault occurring easily, damages liquid heating apparatus, also can damage befouling environment to human body.
The model utility content
The utility model has overcome the aforesaid liquid heating plant and has cut off the water or pump causes the liquid return dry combustion method when fault occurring easily, damage liquid heating apparatus, human body is damaged shortcoming with befouling environment, and provide a kind of water outlet to have the shielded electric-pump of safety check.
To achieve these goals, the utility model is to realize by the following technical solutions:
A kind of shielded electric-pump of water outlet band safety check, it is made up of with the shield electric machine that is connected with the pump housing the pump housing, also is provided with a safety check on this pump housing,
Described safety check is arranged on pump housing outlet port;
Seal ring on the described safety check is fixed in pump housing outlet inwall.
The utility model has guaranteed that greatly liquid heating apparatus can not damage liquid heating apparatus because of cutting off the water or causing the liquid return dry combustion method during failure of pump; Guarantee when pump housing generation crackle, can not leak human body is damaged and befouling environment; And guaranteed effectively that by the last lower thrust-bearing that is provided with the impeller string quantity makes it be in the efficient that product has been guaranteed in normal working position; And the circulation loop medium makes thrust-bearing, porcelain shaft and ceramic bearing that enough lubricated rates that reduces wear mutually be arranged through the gap between stator can and the Rotor can, has reduced noise, has prolonged the working life of shielded electric-pump greatly.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is installed in structural representation on the shielded electric-pump for the utility model.
Fig. 2 is the structural representation of safety check.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
With reference to figure 1 and Fig. 2:
A kind of shielded electric-pump of water outlet band safety check, it is made up of with the shield electric machine 2 that is connected with the pump housing 1 pump housing 1, also is provided with a safety check 3 on this pump housing 1, and this safety check 3 is arranged on a side of pump housing outlet 4 by the fixing seal device; Water outlet place on safety check 3 also is provided with a usefulness, and this prevents the backflow device of liquid countercurrent; Safety check 3 is made up of safety check valve gap 5, check-valve spring 6, spool 7, liner 8 and seal ring 9 these several parts; Liner 8 on the safety check 3 and seal ring 9 are close to the pump housing by Sealing and are exported 4 places; The pump housing 1 is communicated in blade wheel chamber 10, and blade wheel chamber 10 is communicated in following screen board assembly 11; Ceramic bearing 12 on the following screen board 11 was arranged on liquid bath and was communicated in gap location between stator can 13 and the Rotor can assembly 14, gap between stator can 13 and the Rotor can assembly 14 crosses by being arranged on ceramic bearing 12 in the upper bearing bracket 15 that liquid baths are communicated with and upper bearing bracket inner chamber 16, upper bearing bracket inner chamber 16 be arranged on porcelain shaft 12 return ports and be communicated with impeller inlet 17 places.
When shielded electric-pump is worked, the magnetic field that shield electric machine 2 produces provides power to drive rotor operation, liquid is carried liquid from impeller inlet 17 pressurization backs to the pump housing 1 outlet, liquid exports 4 directions to the pump housing and moves to the spool 7 of safety check 3 back valve core 7 of exerting pressure, make spool 7 and liner 8 be separated from, liquid flows out pump housing outlet 4, when impeller does not rotate or the impeller operation back pump housing when exporting 4 pressure greater than the pressure of impeller outlet 17,8 sealings of spool 7 and liner, the pump housing exports 4 liquid and does not reflux in the pump housing 1 like this.
When the utility model is applied to solar water heater system, shielded electric-pump is started working non-return valve core 7 is moved to water outlet 4 directions when solar water heater needs moisturizing, water filling in the water heater heating pipe, when shielded electric-pump do not work or pump housing import 19 lacks of water or pressure when being lower than the pump housing and exporting 4 water pressures safety check 3 be back in the shielded electric-pump pump housing 1 and the conduit pipeline with regard to stoping the water in the water heater heating pipe, guaranteed that solar water heater makes whole system lose efficacy because of anhydrous heating when absorbing solar energy.
The utility model has guaranteed that greatly liquid heating apparatus can not damage liquid heating apparatus because of cutting off the water or causing the liquid return dry combustion method during failure of pump; Guarantee when pump housing generation crackle, can not leak human body is damaged and befouling environment; Guaranteed effectively that by the last lower thrust-bearing that is provided with the impeller string quantity makes it be in the efficient that product has been guaranteed in normal working position; And the circulation loop medium makes thrust-bearing, porcelain shaft and ceramic bearing that enough lubricated rates that reduces wear mutually be arranged through the gap between stator can and the Rotor can, has reduced noise, has prolonged the working life of shielded electric-pump greatly.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. the shielded electric-pump of a water outlet band safety check, it is made up of with the shield electric machine that is connected with the pump housing the pump housing, it is characterized in that, also is provided with a safety check on this pump housing, and described safety check is arranged on pump housing outlet port; Seal ring on the described safety check is fixed in pump housing outlet inwall.
CN200920075239XU 2009-07-24 2009-07-24 Canned motor pump with check valve at water outlet Expired - Lifetime CN201535264U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920075239XU CN201535264U (en) 2009-07-24 2009-07-24 Canned motor pump with check valve at water outlet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920075239XU CN201535264U (en) 2009-07-24 2009-07-24 Canned motor pump with check valve at water outlet

Publications (1)

Publication Number Publication Date
CN201535264U true CN201535264U (en) 2010-07-28

Family

ID=42535043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920075239XU Expired - Lifetime CN201535264U (en) 2009-07-24 2009-07-24 Canned motor pump with check valve at water outlet

Country Status (1)

Country Link
CN (1) CN201535264U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106321459A (en) * 2015-07-07 2017-01-11 杭州三花研究院有限公司 Electric driving pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106321459A (en) * 2015-07-07 2017-01-11 杭州三花研究院有限公司 Electric driving pump

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20130320

Address after: 230088 Anhui city of Hefei province high tech Zone Technology Park Bai Yan Yang Road No. 1

Patentee after: Hefei Xinhu Canned Motor Pump Co., Ltd.

Address before: 201318 No. 333 East Cambridge Road, Nanhui District, Shanghai

Patentee before: Shanghai Xinhu Electric Machine Factory Co., Ltd.

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 201318 NANHUI, SHANGHAI TO: 230088 HEFEI, ANHUI PROVINCE

ASS Succession or assignment of patent right

Owner name: HEFEI XINHU CANNED MOTOR PUMP CO., LTD.

Free format text: FORMER OWNER: XINHU DYNAMO PLANT CO., LTD., SHANGHAI

Effective date: 20130320

C41 Transfer of patent application or patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20100728

CX01 Expiry of patent term