CN215333449U - External reflux non-sealing efficient self-sucking pump - Google Patents

Abstract

The utility model provides an external reflux seal-free high-efficiency self-sucking pump which comprises a pump body and a sealing cover, wherein one end of the pump body is communicated with a high-position suction inlet, the other end of the pump body is communicated with a discharge outlet, an impeller is rotatably arranged in the pump body, the high-position suction inlet comprises an external reflux pipe and an electromagnetic valve, one end of the external reflux pipe is communicated with the outer wall of the high-position suction inlet, the other end of the external reflux pipe is communicated with the pump body, the other end of the external reflux pipe is communicated with the impeller, the electromagnetic valve is arranged on the external reflux pipe, and the electromagnetic valve is used for opening and closing the external reflux pipe; according to the self-priming pump with the structure, the outer return pipe and the electromagnetic valve are arranged, after the electromagnetic valve is opened, the axial force of the impeller is reduced, the energy consumption is reduced, the working efficiency of the impeller is better, the power consumed by a large auxiliary impeller is eliminated, the auxiliary impeller structure is omitted, the overall operation efficiency of the self-priming pump is greatly improved, and the energy-saving operation is realized.

Description

External reflux non-sealing efficient self-sucking pump

Technical Field

The utility model relates to the technical field of self-priming pumps, in particular to an external reflux seal-free high-efficiency self-priming pump.

Background

The self-priming pump belongs to a self-priming centrifugal pump and has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, stronger self-priming capability and the like. The pipeline does not need to be provided with a bottom valve, and only quantitative liquid guiding is required to be ensured to be stored in the pump body before work. Different liquids can adopt self-priming pumps made of different materials.

But current self priming pump still has some problems in the existing market, when the self priming pump need the start, drives main shaft and impeller rotation through driving motor, realizes the mixture of liquid and gas through the impeller export to realize from inhaling the function. The self-priming pump of this kind of structure, during the operation, the medium is got into by high-order sunction inlet, steps up the impeller through the pipeline, carries out energy recuperation through the pump body, promotes the inside pressure of pump chamber, and the rethread discharge port is carried. Because the generated pump cavity pressure and axial force are completely eliminated by the large auxiliary impeller, the self efficiency of the pump is extremely low, and the normal efficiency is only 30-50%. However, because of the special characteristics of the medium, the auxiliary impeller cannot be eliminated, and the mechanical seal or the packing seal cannot be replaced, so that the pump is durable in reliability under the current situation, but the energy consumption is particularly wasted.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an external reflux seal-free high-efficiency self-sucking pump.

The utility model solves the technical problems through the following technical means:

the utility model provides an outer backward flow does not have sealed high-efficient self priming pump, includes the pump body, sealed lid, pump body one end intercommunication has high-order sunction inlet, pump body other end intercommunication has the discharge port, pump body internal rotation is equipped with the impeller, high-order sunction inlet includes:

one end of the outer return pipe is communicated with the outer wall of the high-position suction inlet, the other end of the outer return pipe is communicated with the pump body, and the other end of the outer return pipe is communicated with the impeller;

and the electromagnetic valve is arranged on the outer return pipe and is used for opening and closing the outer return pipe.

Furthermore, one side of the impeller is fixedly connected with a main shaft.

Furthermore, the impeller adopts a front opening ring and a rear opening ring for realizing axial force balance.

Furthermore, the outer return pipe is fixedly connected with the sealing cover.

Further, a ball valve is assembled on the outer return pipe, and the ball valve is used for adjusting the pressure of the outer return pipe.

The utility model has the beneficial effects that: by arranging the outer return pipe and the electromagnetic valve, when the electromagnetic valve is closed and the impeller rotates, self-absorption is formed in the pump body, so that the impeller receives axial force, and the energy consumption is high; after the electromagnetic valve is opened, the axial force of the impeller is reduced, so that the working efficiency of the impeller is better, and the overall operation efficiency of the self-priming pump is effectively improved; through setting up the ball valve, can adjust the pressure in the outer return pipe, and then adjust the negative pressure rather than the impeller of intercommunication department, make back choma chamber department pressure reduce, the self priming pump of this structure has eliminated the power that big auxiliary impeller consumed, and the vice impeller structure of cancellation promotes the whole operating efficiency of self priming pump by a wide margin, realizes energy-conserving operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. a high suction inlet; 2. an electromagnetic valve; 3. a ball valve; 4. an outer return pipe; 5. a sealing cover; 6. a main shaft; 7. an impeller; 8. a pump body; 9. and (7) discharging the air.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in fig. 1, the external reflux seal-free high-efficiency self-priming pump in this embodiment includes a pump body 8 and a seal cover 5, one end of the pump body 8 is communicated with a high-level suction inlet 1, the other end of the pump body 8 is communicated with a discharge outlet 9, an impeller 7 is rotatably arranged in the pump body 8, the high-level suction inlet 1 includes an external reflux pipe 4 and an electromagnetic valve 2, one end of the external reflux pipe 4 is communicated with the outer wall of the high-level suction inlet 1, the other end of the external reflux pipe 4 is communicated with the pump body 8, the other end of the external reflux pipe 4 is communicated with the impeller 7, the electromagnetic valve 2 is mounted on the external reflux pipe 4, and the electromagnetic valve 2 is used for opening and closing the external reflux pipe 4;

one side of the impeller 7 is fixedly connected with a main shaft 6;

the impeller 7 adopts a front and a rear opening rings and is used for realizing axial force balance;

the outer return pipe 4 is fixedly connected with the sealing cover 5;

the position of the connecting point O can be anywhere from the point A to the point B or in the whole C cavity;

when the pump body 8 operates in a self-priming exhaust working condition, the electromagnetic valve 2 is closed, and when the impeller 7 rotates, the requirement of pump cavity exhaust is met, the self-priming working condition is realized, the impeller 7 receives axial force, the energy consumption is high, and when the normal operation working condition is changed, the battery valve 2 is opened, so that the pressure at the rear opening ring of the impeller 7 is reduced, the axial force balance is realized, and the energy consumption is reduced; this embodiment adopts this structure to make self priming pump eliminate the power that big auxiliary impeller consumed, cancels the auxiliary impeller structure, promotes self priming pump's whole operating efficiency by a wide margin, realizes energy-conserving operation.

Example 2

As shown in fig. 1, the outer return pipe 4 is provided with a ball valve 3, and the ball valve 3 is used for adjusting the pressure of the outer return pipe 4;

the pressure in the outer thin flow pipe is adjusted by adjusting the opening degree of the valve of the ball valve 3, and then the negative pressure of the impeller 7 communicated with the outer thin flow pipe is adjusted, so that the pressure in the rear opening ring cavity is reduced, and the gap pressure between the main shaft 6 and the sealing cover 5 is ensured not to form negative pressure.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (5)

1. The utility model provides an outer backward flow does not have sealed high-efficient self priming pump, includes the pump body (8), sealed lid (5), pump body (8) one end intercommunication has high-order sunction inlet (1), pump body (8) other end intercommunication has discharge port (9), pump body (8) internal rotation is equipped with impeller (7), its characterized in that: the high-position suction port (1) includes:

one end of the outer return pipe (4) is communicated with the outer wall of the high-position suction inlet (1), the other end of the outer return pipe (4) is communicated with the pump body (8), and the other end of the outer return pipe (4) is communicated with the impeller (7);

the electromagnetic valve (2) is installed on the outer return pipe (4), and the electromagnetic valve (2) is used for opening and closing the outer return pipe (4).

2. The external reflux seal-free high-efficiency self-priming pump according to claim 1, wherein: and one side of the impeller (7) is fixedly connected with a main shaft (6).

3. The external reflux seal-free high-efficiency self-priming pump according to claim 1, wherein: the impeller (7) adopts a front opening ring and a rear opening ring and is used for realizing axial force balance.

4. The external reflux seal-free high-efficiency self-priming pump according to claim 1, wherein: the outer return pipe (4) is fixedly connected with the sealing cover (5).

5. The external reflux seal-free high-efficiency self-priming pump according to claim 1, wherein: the outer return pipe (4) is provided with a ball valve (3), and the ball valve (3) is used for adjusting the pressure of the outer return pipe (4).

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