CN210565120U

CN210565120U - Pump body with secondary pump

Info

Publication number: CN210565120U
Application number: CN201921020327.XU
Authority: CN
Inventors: 潘恩富
Original assignee: Zhejiang Donghai Ruipu Science & Technology Co ltd
Current assignee: Zhejiang Donghai Ruipu Science & Technology Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-05-19
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a pump body with secondary pump, its technical scheme main points are including pump cover, pump case and the pump seat that sets gradually, its characterized in that: the pump comprises a pump body and is characterized in that an impeller assembly is arranged in the pump body, the pump body comprises a front pump cavity and a rear pump cavity which are arranged inside, the impeller assembly comprises a guide vane which is coaxially matched and arranged in the front pump cavity, a first-stage impeller which is embedded in the guide vane and a second-stage impeller which is arranged in the rear pump cavity, and first outlet water is arranged on one side of the pump body. The utility model aims at providing a pump body with second grade pump realizes increasing pressure for the fire pump, increases the flow, the effect of weight reduction.

Description

Pump body with secondary pump

Technical Field

The utility model belongs to the technical field of the engine, more specifically the theory that says so, it relates to a pump body with second grade pump.

Technical Field

Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, and is mainly used to transfer liquid including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal. In both heavy industry and light industry, national defense construction and military equipment, advanced science and technology and daily life, pumps are needed everywhere and are operated everywhere. Therefore, the water pump is one of important products in the mechanical industry, is machine equipment which is necessary to develop modern industry, agriculture, national defense and scientific technology, and has important practical significance in mastering, using and maintaining knowledge and skills.

At present, most of domestic water pumps are single-stage pumps, a single-stage centrifugal pump is a centrifugal pump with an impeller, and the centrifugal pump is widely applied to liquid conveying under the conditions of large and medium flow and low pressure, before the centrifugal pump is started, the pump is filled firstly, so that the conveyed liquid is filled in a suction pipeline, after a pump shell is started, under the action of centrifugal force, the liquid moves outwards from the impeller along a flow channel between blades, is thrown out from the end part of the impeller and enters a spiral pump shell, through the action of the pressure difference of the liquid, the liquid continuously enters the impeller along the suction pipeline so as to supplement the discharged liquid impeller to rotate ceaselessly, the liquid is continuously sucked and discharged, the single-stage pump cannot perfectly exert the power of an engine, and redundant power of the engine is wasted.

In summary, the main problems of the water pumps on the market today are: (1) how to make the engine bear the load of the double-stage impeller driving water during operation properly; (2) how to realize the high-efficient pressure boost of doublestage impeller, increase flow.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a pump body with secondary pump realizes increasing pressure, increases the flow for the fire pump, the effect of weight reduction.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a pump body with secondary pump, is including pump cover, pump case and the pump seat that sets gradually, be equipped with the impeller subassembly in the pump body, the pump case is including setting up preceding pump chamber and the back pump chamber in inside, the impeller subassembly includes that coaxial fit sets up the stator in the preceding pump chamber, embedded one-level impeller of locating in the stator and sets up the second grade impeller in back pump chamber, pump case one side is equipped with first outlet water.

Preferably, one-level impeller and second grade impeller all include impeller cover and impeller back seat that sets gradually from the pump cover to the pump seat, the impeller back seat is including setting up the blade in the space of impeller cover and impeller back seat and setting up in the first cylinder of impeller seat rear end, the blade one end that is close to impeller back seat edge upwards extend and have the lug, the impeller cover is including the draw-in groove of cooperation lug setting and setting at the second cylinder of keeping away from blade one side.

In order to improve the stability of the operation, preferably, the second column body is coaxially sleeved on the first column body.

Preferably, the inner side surface of the front pump cavity is provided with a first arc-shaped boss with a circle center arranged in a surrounding mode, and the top end of the first arc-shaped boss extends out of the inner diameter of the pump shell and is meshed with the outer diameter edge of the second cylinder.

Preferably, the stator includes the stator back seat, the stator back seat is equipped with the water conservancy diversion mouth that the centre of a circle encircles the range, is located the water conservancy diversion mouth edge the stator back seat medial surface is equipped with the second arc boss that extends from the edge.

In order to improve the stability of the operation, preferably, the top end of the second arc-shaped boss is extended and engaged to the outer diameter edge of the primary impeller.

Preferably, the stator is provided with a groove coaxial with the stator, and the groove is internally sleeved with a sealing ring.

Preferably, the pump seat is also provided with a second water outlet on the same side as the water outlet. The second water outlet can be selectively sealed and opened.

In order to improve the circulation effect, preferably, the front end of the pump cover is provided with a water inlet, and the side of the pump cover is provided with a pressure water return port.

Preferably, the pump cover, the pump shell and the outer wall of the pump base are provided with supporting columns at corresponding positions, and the supporting columns are internally provided with positioning holes.

Has the advantages that:

the horsepower of the engine is properly utilized, so that the engine can drive the two-stage impeller with high efficiency and high power, and the impeller can reach the maximum load; the primary impeller and the secondary impeller rotate simultaneously to drive the water to flow so as to increase the pressure for the second time, and the design of flow guiding enables the redundant water to realize the pressurization effect in a closed environment; meanwhile, the large volume in the pump shell improves the water capacity, and the high-speed rotation of the impeller throws out the water pump to greatly improve the flow of the water pump. The mutual assistance of pressure and flow is realized, so that the pressure of the water pump is increased, and the flow is increased.

The guide vane and the pump shell are separately designed, so that the maintenance is convenient and economical, a single part can be selected for replacement or maintenance in the face of the damage of a certain part of the pump shell, and the problem finding and timely treatment are facilitated.

The secondary pump can better exert engine power for the pressure is higher than single-stage pump, and simultaneously, the design of the second grade impeller and the stator of secondary pump makes the more effective increase pressure and flow of secondary pump.

The sealing ring on the guide vane prevents abrasion between the guide vane and the pump shell, improves water flow at the inlet of the water pump, and improves the efficiency of the water pump.

Drawings

FIG. 1: is a three-dimensional view of the utility model;

FIG. 2: is a cross-sectional view of the pump body of the utility model;

FIG. 3: is a schematic diagram of the impellers at all levels of the utility model;

FIG. 4: is a schematic view of the guide vane of the utility model;

FIG. 5: is a schematic structural diagram of the pump shell of the utility model;

in the figure: 1. a water inlet; 2. a pump cover; 3. a first-stage impeller; 4. a guide vane; 5. a pump housing; 6. a first water outlet; 7. a secondary impeller; 8. a pump mount; 9. a second water outlet; 10. a groove; 11. an impeller rear seat; 12. an impeller cover; 13. a blade; 14. a first column; 15. a second cylinder; 16. a bump; 17. a card slot; 18. a second arc-shaped boss; 19. a guide vane rear seat; 20. a flow guide port; 21. a pressure water return port; 22. a pillar; 23. first arc boss.

Detailed Description

Referring to fig. 1 to 5, the pump body with the secondary pump of this embodiment includes pump cover 2, pump case 5 and the pump base 8 that set gradually, be equipped with the impeller subassembly in the pump body, pump case 5 is including setting up preceding pump chamber and the back pump chamber in inside, the impeller subassembly includes that coaxial fit sets up in the stator 4 of preceding pump chamber, embedded one-level impeller 3 of locating in stator 4 and sets up in the second grade impeller 7 of back pump chamber, 5 one side of pump case is equipped with first export water 6.

One-level impeller 3 and second-stage impeller 7 all include impeller cover 12 and impeller back seat 11 that set gradually from pump cover 2 to pump seat 8, impeller back seat 11 is including setting up blade 13 in impeller cover 12 and impeller back seat 11's space and setting up in the first cylinder 14 of impeller seat rear end, blade 13 be close to the one end at 11 edges of impeller back seat and upwards extend and have lug 16, impeller cover 12 is including the draw-in groove 17 that cooperation lug 16 set up and setting at the second cylinder 15 of keeping away from blade 13 one side.

The second column 15 is coaxially sleeved on the first column 14.

The inner side surface of the front pump cavity is provided with a first arc-shaped boss 23 with a circle center arranged in a surrounding way, and the top end of the first arc-shaped boss 23 extends out of the inner diameter of the pump shell 5 and is meshed with the outer diameter edge of the second boss.

The guide vane 4 comprises a guide vane rear seat 19, the guide vane rear seat 19 is provided with a guide opening 20 with a circle center arranged in a surrounding manner, and a second arc-shaped boss 18 extending from the edge is arranged on the inner side surface of the guide vane rear seat 19 at the edge of the guide opening 20.

The top end of the second arc-shaped boss 18 extends and is engaged with the outer diameter edge of the primary impeller 3.

The guide openings 20 are arranged in six annular arrangement, so that the guide vane rear seat 19 is in a flower shape, the second arc-shaped boss 18 extends inwards along one side of the guide groove to be meshed with the outer diameter edge of the impeller, and the six annular arrangement are also adopted.

The stator 4 is equipped with the coaxial recess 10 with stator 4 outward, the sealing washer is equipped with to the recess 10 endotheca.

And a second water outlet 9 is also arranged on the same side of the pump seat 8 as the water outlet.

The front end of pump cover 2 is equipped with water inlet 1, the side of pump cover 2 is equipped with pressure return water mouth 21.

The pump cover 2, the pump shell 5 and the outer wall of the pump base 8 are all provided with supporting columns 22 corresponding to the positions, the supporting columns 22 are internally provided with positioning holes, and the 5 supporting columns 22 are arranged in a surrounding mode.

By adopting the technical scheme, the pump seat 8 is fixed on the rotating shaft through the internal screw of the pump seat 8, the impeller cover 12 of the secondary impeller 7 is sleeved into the rotating shaft, the first cylinder 14 of the secondary impeller 7 is inserted into the concave arc groove corresponding to the pump seat 8, the pump shell 5 is sleeved into the rotating shaft, the first arc-shaped boss 23 on the pump shell 5 corresponds to the edge of the second cylinder 15 of the secondary impeller 7, the guide vane 4 is sleeved on the first cylinder 14 of the primary impeller 3, the primary impeller 3 sleeved with the guide vane 4 is sleeved into the rotating shaft, so that the bottom surface of the guide vane rear seat 19 of the guide vane 4 is contacted with the front end surface of the secondary impeller 7, finally the pump cover 2 is sleeved into the rotating shaft at the front end of the pump shell 5, the positioning holes on the pump cover 2 and the pump seat 8 correspond to the positioning holes on the pump shell 5 to form a space channel, and. Enter into one-level impeller 3 water inlet 1 after drawing water from water inlet 1 through power, on blade 13 in the one-level impeller 3 was followed the scattered water partial pressure and is washed to stator 4 on, press into in the water conservancy diversion mouth 20 of pump case 5 from the water conservancy diversion mouth 20 of stator 4, thereby make rivers pass through the second grade impeller 7 water inlet 1 of rotating together with one-level impeller 3 again, through the first delivery port 6 of the rivers that second grade impeller 7 original rotational speed pressure and one-level impeller 3 pressed together, make pressure increase, and simultaneously, also make the flow increase.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a pump body with second grade pump, includes pump cover, pump case and the pump seat that sets gradually, its characterized in that: the pump comprises a pump body and is characterized in that an impeller assembly is arranged in the pump body, the pump body comprises a front pump cavity and a rear pump cavity which are arranged inside, the impeller assembly comprises a guide vane which is coaxially matched and arranged in the front pump cavity, a first-stage impeller which is embedded in the guide vane and a second-stage impeller which is arranged in the rear pump cavity, and first outlet water is arranged on one side of the pump body.

2. The pump body with the two-stage pump according to claim 1, wherein: the one-level impeller and the second-level impeller all include impeller lid and impeller back seat that set gradually from pump cover to pump seat, the impeller back seat is including setting up the blade in the space of impeller lid and impeller back seat and setting up in the first cylinder of impeller seat rear end, the blade one end that is close to impeller back seat edge upwards extend and have the lug, the impeller lid is including the draw-in groove of cooperation lug setting and setting at the second cylinder of keeping away from blade one side.

3. The pump body with the two-stage pump according to claim 2, wherein: the second column body is coaxially sleeved on the first column body.

4. The pump body with the two-stage pump according to claim 1, wherein: the pump is characterized in that a first arc-shaped boss is arranged on the inner side surface of the front pump cavity in a circle center surrounding mode, and the top end of the first arc-shaped boss extends out of the inner diameter of the pump shell and is meshed with the outer diameter edge of the second cylinder.

5. The pump body with the two-stage pump according to claim 1, wherein: the stator includes the stator back seat, the stator back seat is equipped with the water conservancy diversion mouth that the centre of a circle encircles the range, is located the water conservancy diversion mouth edge the stator back seat medial surface is equipped with the second arc boss that extends from the edge.

6. The pump body with the two-stage pump according to claim 5, wherein: the top end of the second arc-shaped boss extends and is meshed to the outer diameter edge of the first-stage impeller.

7. The pump body with the two-stage pump according to claim 1, wherein: the stator is equipped with the recess coaxial with the stator outward, the recess endotheca is equipped with the sealing washer.

8. The pump body with the two-stage pump according to claim 1, wherein: and a second water outlet is also formed in the same side of the pump seat and the water outlet.

9. The pump body with the two-stage pump according to claim 1, wherein: the front end of pump cover is equipped with the water inlet, the side of pump cover is equipped with pressure return water mouth.

10. The pump body with the two-stage pump according to claim 1, wherein: the pump cover, the pump shell and the outer wall of the pump base are all provided with supporting columns at corresponding positions, and positioning holes are formed in the supporting columns.