CN211819959U - Immersion type two-stage spray-suction centrifugal pump - Google Patents

Abstract

The utility model discloses an immersion doublestage spray-suction centrifugal pump, including centrifugal pump shell and mounting plate, the centrifugal pump shell comprises last casing and the fixed lock of casing down, and the upper surface of casing has seted up first accepting the chamber down, and first runner has been seted up in the first intracavity of accepting, and the second runner has been seted up in the first chamber outside of accepting to casing upper surface down, and first impeller mounting has seted up the second downwards and has accepted the chamber in the first chamber of accepting, and casing fixed surface installs the bottom down, and the fixed inserting of output shaft lower extreme of motor is located first perforation and second perforation. The utility model discloses can be to outside defeated bath liquid, also can be with outside bath liquid withdrawal bath groove in, form bath groove thermostatic control circulation, also improve energy consumption's efficiency when saving the cost, its simple structure simultaneously, simple to operate and easy to maintain have improved immersion centrifugal pump's application range.

Description

Immersion type two-stage spray-suction centrifugal pump

Technical Field

The utility model relates to a centrifugal pump technical field, more specifically say, in particular to immersion doublestage spray suction centrifugal pump.

Background

At present, an immersion type centrifugal pump is a conventional water pump applied to constant-temperature water bath equipment, and the centrifugal pump is a pump for conveying liquid by means of centrifugal force generated when an impeller rotates; when the liquid pump is immersed in the bath lotion, the motor is started, the pump shaft drives the impeller to rotate at a high speed, and the bath lotion centrifugally moves along with the impeller and enters the pressure pipeline through the volute flow channel of the pump body. This is the application of a conventional submerged centrifugal pump, which is difficult to satisfy the requirement for external control of a thermostatic water bath apparatus (thermostatic control of bath liquid in a bath tank other than the water bath apparatus), because the liquid pump can only deliver the bath liquid to the outside, and cannot re-pump the bath liquid in the external bath tank into the bath tank to form a bath tank thermostatic control cycle. The application range is limited, and the liquid pump which pumps bath liquid back to the bath of the equipment is needed to be added only for the external closed circulation to form the internal circulation, so the cost of the equipment is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an immersion doublestage spray suction centrifugal pump.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an immersion type two-stage spray-suction centrifugal pump comprises a centrifugal pump shell and a mounting bottom plate, wherein the centrifugal pump shell is formed by fixedly buckling an upper shell and a lower shell, three groups of connecting rods are fixedly mounted at the outer side end of the upper surface of the upper shell, bolts are arranged at the upper ends of the connecting rods, the upper shell is fixedly connected with the lower surface of the mounting bottom plate through the bolts at the upper ends of the connecting rods, a heating pipe is fixedly mounted at the lower surface of the mounting bottom plate and spirally arranged at the periphery of the centrifugal pump shell, a water inlet and a water outlet are respectively formed in the two side ends of the upper surface of the upper shell, a first round hole is formed in the center of the upper surface of the upper shell, a first accommodating cavity is formed in the upper surface of the lower shell, a first flow channel is formed in the first accommodating cavity, a second flow channel, a first impeller is arranged in the first accommodating cavity, a first through hole is formed in the middle of the bottom surface of the first accommodating cavity, a first rotating shaft is fixedly arranged in the middle of the lower surface of the first impeller, the first impeller is movably inserted into the first through hole through the first rotating shaft, a first through hole penetrates through the middle of the first rotating shaft from top to bottom, the first through hole is positioned under the first circular hole, the second flow passage is positioned under the water inlet, a second accommodating cavity is formed in the lower surface of the lower shell inwards, the bottom of the second flow passage is communicated with the second accommodating cavity, the first through hole extends downwards and penetrates through the second accommodating cavity, a bottom cover is fixedly arranged on the lower surface of the lower shell, a bottom hole is formed in the center of the bottom cover, the bottom hole is positioned under the first through hole, a second impeller is arranged below the bottom cover, and a second rotating shaft is fixedly arranged in the middle of the upper surface of the second impeller, the second rotating shaft penetrates through the second through hole from top to bottom, the second impeller is movably inserted into the bottom hole through the second rotating shaft, the motor is fixedly installed in the middle of the upper surface of the mounting base plate, the output shaft of the motor is movably inserted into the middle of the mounting base plate in a penetrating mode, and the lower end of the output shaft of the motor is fixedly inserted into the first through hole and the second through hole.

Furthermore, the first flow channel is communicated with the first accommodating cavity, and the top of one end of the first flow channel is positioned right below the water outlet.

Furthermore, the water inlet and the water outlet are both protruded out of the upper surface of the upper shell.

Further, the outer diameter of the first rotating shaft is smaller than the inner diameter of the first round hole, and the outer diameter of the second rotating shaft is smaller than the inner diameter of the bottom hole.

Compared with the prior art, the utility model has the advantages of:

the first impeller and the second impeller are driven by an output shaft of the motor, when the first impeller rotates, the water inlet can allow external bath liquid to enter and enter the second accommodating cavity through the second flow channel, when the first impeller rotates, the second impeller also rotates simultaneously, the bath liquid is conveyed into the bath tank through the centrifugal suction force of the second impeller, when the bath liquid needs to be discharged outside, the bath liquid in the bath tank is conveyed out to the first accommodating cavity through the centrifugal suction force of the first impeller and then flows out through the first flow channel and the water outlet, so that the bath liquid can be conveyed to the outside and the external bath liquid can be pumped back into the bath tank, the constant temperature control cycle of the bath tank is formed, the cost is saved, and the efficiency of energy consumption is improved; meanwhile, the submersible centrifugal pump is simple in structure, convenient to install and easy to maintain, and the application range of the submersible centrifugal pump is widened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a structural diagram of an immersion type two-stage ejector centrifugal pump of the present invention;

FIG. 2 is a diagram of a centrifugal pump housing structure of an immersion type two-stage ejector centrifugal ss pump of the present invention;

FIG. 3 is a top exploded view of a centrifugal pump housing of the submerged two-stage ejector-suction centrifugal pump of the present invention;

fig. 4 is a bottom exploded view of the centrifugal pump casing of the submerged two-stage ejector centrifugal pump of the present invention.

In the figure: the device comprises an upper shell 1, a water outlet 11, a water inlet 12, a first round hole 13, a first impeller 2, a first rotating shaft 21, a first through hole 22, a lower shell 3, a first accommodating cavity 31, a first flow channel 32, a first through hole 33, a second flow channel 34, a second accommodating cavity 35, a bottom cover 4, a bottom hole 41, a second impeller 5, a second rotating shaft 51, a second through hole 52, a mounting bottom plate 6, a motor 7, a heating pipe 8 and a connecting rod 9.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to fig. 1 to 4, the present invention provides an immersion type two-stage spray centrifugal pump, which comprises a centrifugal pump housing and a mounting base plate 6, wherein the centrifugal pump housing is formed by fixedly fastening an upper housing 1 and a lower housing 3, three connecting rods 9 are fixedly mounted on the outer side end of the upper surface of the upper housing 1, bolts are disposed on the upper ends of the connecting rods 9, the upper housing 1 is fixedly connected to the lower surface of the mounting base plate 6 through the bolts on the upper ends of the connecting rods 9, a heating pipe 8 is fixedly mounted on the lower surface of the mounting base plate 6, the heating pipe 8 is spirally disposed on the periphery of the centrifugal pump housing, a water inlet 12 and a water outlet 11 are respectively disposed on the two side ends of the upper surface of the upper housing 1, a first circular hole 13 is disposed at the center of the upper surface of the upper housing 1, a first receiving cavity 31 is disposed on the upper surface, and the top of one end of the first flow channel 32 is located right below the water outlet 11, and the water inlet 12 and the water outlet 11 both protrude out of the upper surface of the upper shell 1.

The upper surface of the lower shell 3 is provided with a second flow passage 34 outside the first receiving cavity 31, the top of one end of the first flow passage 32 protrudes out of the upper surface of the lower shell 3, the first receiving cavity 31 is internally provided with a first impeller 2, the middle part of the bottom surface of the first receiving cavity 31 is provided with a first through hole 33, the middle part of the lower surface of the first impeller 2 is fixedly provided with a first rotating shaft 21, the first impeller 2 is movably inserted in the first through hole 33 through the first rotating shaft 21, the middle part of the first rotating shaft 21 is provided with a first through hole 22 in a penetrating way from top to bottom, the first through hole 22 is positioned under the first round hole 13, the second flow passage 34 is positioned under the water inlet 12, the lower surface of the lower shell 3 is internally provided with a second receiving cavity 35, the bottom of the second flow passage 34 is communicated with the second receiving cavity 35, the first through hole 33 extends downwards and penetrates through the second receiving cavity 35, the lower surface of the lower, bottom hole 41 has been seted up at bottom 4 center department, bottom hole 41 is located under first through-hole 33, bottom 4 below is provided with second impeller 5, second impeller 5 upper surface middle part is fixed and is provided with second axis of rotation 51, second axis of rotation 51 top-down runs through and has seted up second perforation 52, second impeller 5 inserts through second axis of rotation 51 activity and locates in bottom hole 41, mounting plate 6 upper surface middle part fixed mounting has motor 7, the output shaft activity of motor 7 runs through and inserts and locates mounting plate 6 middle part, and the output shaft lower extreme of motor 7 is fixed to be inserted and locates in first perforation 22 and the second perforation 52, the external diameter of first axis of rotation 21 is less than the internal diameter of first round hole 13, the external diameter of second axis of rotation 51 is less than the internal diameter of bottom hole 41.

The working principle is as follows: the first impeller 2 and the second impeller 5 are driven by an output shaft of the motor 7, when the first impeller 2 rotates, the water inlet 12 can allow external bath liquid to enter, and enter the second accommodating cavity 35 through the second flow passage 34, when the first impeller 2 rotates, the second impeller 5 also rotates at the same time, the bath liquid is sent to the bath through the centrifugal suction force of the second impeller 5, when the bath liquid needs to be discharged outside, the bath liquid in the bath is sent out to the first accommodating cavity 31 through the centrifugal suction force of the first impeller 2, and then flows out through the first flow passage 32 and the water outlet 11, so that the bath liquid can be output to the outside, and the external bath liquid can be pumped back to the bath, a bath constant temperature control cycle is formed, the cost is saved, and the energy consumption efficiency is improved; meanwhile, the structure is simple, the installation is convenient and the maintenance is easy.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims (2)

1. The utility model provides an immersion two-stage spray-suction centrifugal pump, includes centrifugal pump shell and mounting plate (6), the centrifugal pump shell comprises last casing (1) and the fixed lock of casing (3) down, its characterized in that: the outer side end of the upper surface of the upper shell (1) is fixedly provided with three groups of connecting rods (9), the upper ends of the connecting rods (9) are provided with bolts, the upper shell (1) is fixedly connected with the lower surface of the mounting base plate (6) through the bolts at the upper ends of the connecting rods (9), the lower surface of the mounting base plate (6) is fixedly provided with the heating pipe (8), the heating pipe (8) is spirally arranged at the periphery of the centrifugal pump shell, the two side ends of the upper surface of the upper shell (1) are respectively provided with a water inlet (12) and a water outlet (11), the center of the upper surface of the upper shell (1) is provided with a first round hole (13), the upper surface of the lower shell (3) is provided with a first accommodating cavity (31), a first flow channel (32) is arranged in the first accommodating cavity (31), a second flow channel (34) is arranged on the outer side of the first accommodating cavity (31) on the upper surface of the lower, a first impeller (2) is installed in the first accommodating cavity (31), a first through hole (33) is formed in the middle of the bottom surface of the first accommodating cavity (31), a first rotating shaft (21) is fixedly arranged in the middle of the lower surface of the first impeller (2), the first impeller (2) is movably inserted into the first through hole (33) through the first rotating shaft (21), a first through hole (22) penetrates through the middle of the first rotating shaft (21) from top to bottom, the first through hole (22) is located under the first round hole (13), the second flow channel (34) is located under the water inlet (12), a second accommodating cavity (35) is formed in the lower surface of the lower shell (3) inwards, the bottom of the second flow channel (34) is communicated with the second accommodating cavity (35), the first through hole (33) extends downwards and penetrates through the second accommodating cavity (35), a bottom cover (4) is fixedly installed on the lower surface of the lower shell (3), a bottom hole (41) is formed in the center of the bottom cover (4), the bottom hole (41) is located right below the first through hole (33), a second impeller (5) is arranged below the bottom cover (4), a second rotating shaft (51) is fixedly arranged in the middle of the upper surface of the second impeller (5), a second through hole (52) penetrates through the second rotating shaft (51) from top to bottom, the second impeller (5) is movably inserted into the bottom hole (41) through the second rotating shaft (51), a motor (7) is fixedly installed in the middle of the upper surface of the mounting base plate (6), an output shaft of the motor (7) is movably inserted into the middle of the mounting base plate (6), the lower end of the output shaft of the motor (7) is fixedly inserted into the first through hole (22) and the second through hole (52), and the first flow channel (32) is communicated with the first accommodating cavity (31), and the top of one end of the first flow channel (32) is positioned right below the water outlet (11), and the water inlet (12) and the water outlet (11) are both protruded out of the upper surface of the upper shell (1).

2. The submerged two-stage ejector-suction centrifugal pump of claim 1, characterized in that: the outer diameter of the first rotating shaft (21) is smaller than the inner diameter of the first round hole (13), and the outer diameter of the second rotating shaft (51) is smaller than the inner diameter of the bottom hole (41).

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