CN217999951U

CN217999951U - Small-flow circulating pump

Info

Publication number: CN217999951U
Application number: CN202222509712.9U
Authority: CN
Inventors: 黄建荣; 王松法; 杨振; 张惠莲
Original assignee: Zhejiang Yingduna Fluid Technology Co ltd
Current assignee: Zhejiang Yingduna Fluid Technology Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2022-12-09
Anticipated expiration: 2032-09-22

Abstract

The utility model discloses a small-flow circulating pump, which relates to the technical field of circulating pumps and specifically comprises a first pump shell and a second pump shell, wherein the diameter of the second pump shell is smaller than that of the first pump shell, the second pump shell is connected to one side of the first pump shell, and the second pump shell and the first pump shell are arranged in a stepped manner; a second impeller blade is arranged in the second pump shell, a first impeller blade is arranged in the first pump shell, and the size of the first impeller blade is larger than that of the second impeller blade; first impeller blade and second impeller blade are all installed on the drive shaft, and the other end of drive shaft runs through the setting and locates at first pump case side center, links to each other through bearing and seal assembly between first pump case and the drive shaft, and the end-to-end connection of drive shaft has the motor. The utility model discloses at the in-process that uses, because there is the difference in the two size, the liquid centrifugal force at first impeller blade edge is obviously higher than the centrifugal force of second impeller blade, finally lets the liquid outflow pressure increase of liquid pipe connection mouth for the circulating pump carries the stroke increase.

Description

Small-flow circulating pump

Technical Field

The utility model relates to a circulating pump technical field specifically is a low discharge circulating pump.

Background

The circulating pump is a circulating liquid pump for conveying reaction, absorption, separation and absorption liquid regeneration in the device. The small-flow circulating pump has limited stroke and pressure inside the pump body due to small volume, so that the transmission distance is limited. The existing small-flow pump is only provided with a pump shell, and an impeller is arranged in the pump shell, so that liquid cannot be conveyed in an increased mode.

SUMMERY OF THE UTILITY MODEL

For solving the defects of the prior art, the utility model provides a small-flow circulating pump.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a small-flow circulating pump comprises a first pump shell and a second pump shell, wherein the diameter of the second pump shell is smaller than that of the first pump shell, the second pump shell is connected to one side of the first pump shell, and the second pump shell and the first pump shell are arranged in a stepped mode;

a second impeller blade is arranged in the second pump shell, a first impeller blade is arranged in the first pump shell, and the size of the first impeller blade is larger than that of the second impeller blade;

first impeller blade and second impeller blade are all installed on the drive shaft, and the other end of drive shaft runs through the setting and locates at first pump case side center, links to each other through bearing and seal assembly between first pump case and the drive shaft, and the end-to-end connection of drive shaft has the motor.

Preferably, the bottom of the first pump shell is provided with a mounting seat, and the mounting seat and the motor are both arranged on the base through bolts.

Preferably, one end of the second pump shell, which is far away from the motor, is provided with a sealing end cover, the edges of the sealing end cover and the second pump shell are respectively provided with a second connecting skirt, the two second connecting skirts are fastened through bolts, the middle part of the sealing end cover is vertically provided with a liquid inlet pipe interface, and the side surface of the first pump shell is provided with a liquid outlet pipe interface.

Preferably, the first impeller blade and the second impeller blade are both in a spiral structure, the second impeller blade is connected to the tail end of the first impeller blade, and the first impeller blade and the second impeller blade are in an integrally formed structure;

the connecting part of the first impeller blade and the second impeller blade is in circular arc transition, the first impeller blade and the second impeller blade are arranged outside the supporting tube in a plurality of numbers at equal intervals, the other end of the supporting tube is vertically connected, and the side surface of the mounting plate is connected with the tail end of the first impeller blade; the supporting tube is sleeved on the driving shaft and fastened through a nut.

Preferably, the driving shaft is coaxially provided with a limiting seat, and the limiting seat is abutted to the supporting tube.

Preferably, one side of the second pump shell, which is close to the first pump shell, is connected with an annular sealing disc, the first pump shell is provided with a first connecting skirt, and the edges of the first connecting skirt and the annular sealing disc are fastened through bolts.

Compared with the prior art, the utility model discloses at the in-process that uses, first impeller blade and second impeller blade rotate simultaneously, because there is the difference in the two size, the liquid centrifugal force at first impeller blade edge is obviously higher than the centrifugal force of second impeller blade for the liquid pressure of first impeller blade department is big, finally lets the liquid outflow pressure increase of liquid pipe connection mouth, makes the circulating pump carry the stroke increase.

Drawings

Fig. 1 is a schematic diagram of the rear structure of the present invention.

Fig. 2 is a schematic view of the front structure of the present invention.

Fig. 3 is a schematic view of the impeller structure of the present invention.

Fig. 4 is a front view of the impeller of the present invention.

In the figure: 1. a base; 2. a motor; 3. a first pump casing; 4. a first connecting skirt; 5. an annular sealing disc; 6. a second connecting skirt; 7. sealing the end cover; 8. a liquid inlet pipe interface; 9. a second pump casing; 10. an outlet pipe interface; 11. a mounting base; 12. a second impeller blade; 13. a drive shaft; 14. installing a disc body; 15. a first impeller blade; 16. supporting a pipe; 17. a limiting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a small-flow circulating pump comprises a first pump shell 3 and a second pump shell 9, wherein the diameter of the second pump shell 9 is smaller than that of the first pump shell 3, the second pump shell 9 is connected to one side of the first pump shell 3, and the second pump shell 9 and the first pump shell 3 are arranged in a stepped mode;

a second impeller blade 12 is arranged in the second pump shell 9, a first impeller blade 15 is arranged in the first pump shell 3, and as shown in fig. 3 and 4, the size of the first impeller blade 15 is larger than that of the second impeller blade 12;

the first impeller blade 15 and the second impeller blade 12 are both installed on a driving shaft 13, the other end of the driving shaft 13 penetrates through the center of the side surface of the first pump shell 3, the first pump shell 3 is connected with the driving shaft 13 through a bearing and a sealing assembly, and the tail end of the driving shaft 13 is connected with the motor 2.

When the motor 2 rotates, the first impeller blade 15 and the second impeller blade 12 rotate simultaneously, and due to the size difference between the first impeller blade 15 and the second impeller blade 12, the centrifugal force of the liquid at the edge of the first impeller blade 15 is obviously higher than that of the second impeller blade 12, so that the liquid pressure at the first impeller blade 15 is large, the amount of the effluent liquid is large, and the output distance and the height are obviously improved.

As shown in fig. 1, a mounting seat 11 is mounted at the bottom of the first pump housing 3, and the mounting seat 11 and the motor 2 are both mounted on the base 1 through bolts.

As shown in fig. 1 and 2, a sealing end cover 7 is arranged at one end of the second pump case 9 far away from the motor 2, second connecting skirt edges 6 are arranged at the edges of the sealing end cover 7 and the second pump case 9, the two second connecting skirt edges 6 are fastened through bolts, a liquid inlet pipe connector 8 is vertically arranged in the middle of the sealing end cover 7, and a liquid outlet pipe connector 10 is arranged on the side surface of the first pump case 3.

As shown in fig. 2, the liquid inlet pipe interface 8 is used for connecting an external pipeline, so that external liquid flows into the second pump housing 9, the liquid is accelerated to flow into the first pump housing 3 along with the rotation of the second impeller blade 12, and then the liquid is driven by the first impeller blade 15 to flow out from the liquid outlet pipe interface 10, so that the liquid pressure in the pump body is increased, and the conveying distance is long;

in practical use, the axial length of the second pump housing 9 is greater than the axial length of the first pump housing 3, so that the volume of the liquid in the first pump housing 3 is smaller than the volume of the liquid in the second pump housing 9, and the flow rate of the liquid output from the first pump housing 3 is limited.

As shown in fig. 3, the first impeller blade 15 and the second impeller blade 12 are both helical structures, the second impeller blade 12 is connected to the end of the first impeller blade 15, and the first impeller blade 15 and the second impeller blade 12 are of an integrally formed structure;

the connecting part of the first impeller blades 15 and the second impeller blades 12 is in circular arc transition, the first impeller blades 15 and the second impeller blades 12 are arranged outside the supporting tube 16 in a plurality of numbers and at equal intervals, the other end of the supporting tube 16 is vertically connected, and the side surface of the mounting disc body 14 is connected with the tail end of the first impeller blades 15; the support tube 16 is fitted over the drive shaft 13 and fastened by a nut. As shown in fig. 4, the arrows in fig. 4 are the liquid flowing direction, the impeller blades of the spiral structure can drive the liquid to be conveyed, and the edge of the first impeller blade 15 can throw the liquid out, so as to increase the pressure in the pump body.

Moreover, a limiting seat 17 is coaxially arranged on the driving shaft 13, and the limiting seat 17 is abutted against the supporting pipe 16, so that the supporting pipe 16 is convenient to install.

As shown in fig. 2, one side of the second pump casing 9 close to the first pump casing 3 is connected with an annular sealing disc 5, the first pump casing 3 is provided with a first connecting skirt 4, and the edges of the first connecting skirt 4 and the annular sealing disc 5 are fastened through bolts, so that the assembly and disassembly are convenient.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A small flow circulation pump, includes first pump case (3) and second pump case (9), its characterized in that: the diameter of the second pump shell (9) is smaller than that of the first pump shell (3), the second pump shell (9) is connected to one side of the first pump shell (3), and the second pump shell (9) and the first pump shell (3) are arranged in a stepped mode; a second impeller blade (12) is arranged in the second pump shell (9), a first impeller blade (15) is arranged in the first pump shell (3), and the size of the first impeller blade (15) is larger than that of the second impeller blade (12); the first impeller blade (15) and the second impeller blade (12) are both installed on the driving shaft (13), the other end of the driving shaft (13) penetrates through the center of the side face of the first pump shell (3), the first pump shell (3) and the driving shaft (13) are connected through a bearing and a sealing assembly, and the tail end of the driving shaft (13) is connected with the motor (2).

2. A small flow circulation pump according to claim 1, wherein: an installation seat (11) is installed at the bottom of the first pump shell (3), and the installation seat (11) and the motor (2) are installed on the base (1) through bolts.

3. A small-flow circulation pump according to claim 1, characterized in that: one end, far away from the motor (2), of the second pump shell (9) is provided with a sealing end cover (7), the edges of the sealing end cover (7) and the second pump shell (9) are respectively provided with a second connecting skirt (6), the two second connecting skirts (6) are fastened through bolts, the middle of the sealing end cover (7) is vertically provided with a liquid inlet pipe connector (8), and the side surface of the first pump shell (3) is provided with a liquid outlet pipe connector (10).

4. A small-flow circulation pump according to claim 1, characterized in that: the first impeller blade (15) and the second impeller blade (12) are both of a spiral structure, the second impeller blade (12) is connected to the tail end of the first impeller blade (15), and the first impeller blade (15) and the second impeller blade (12) are of an integrally formed structure; the connection part of the first impeller blade (15) and the second impeller blade (12) is in arc transition, the first impeller blade (15) and the second impeller blade (12) are in a plurality of numbers and are installed outside the supporting pipe (16) at equal intervals, the other end of the supporting pipe (16) is vertically connected, and the side surface of the installing disc body (14) is connected with the tail end of the first impeller blade (15); the supporting tube (16) is sleeved on the driving shaft (13) and is fastened through a nut.

5. A low-flow circulation pump according to claim 4, wherein: a limiting seat (17) is coaxially arranged on the driving shaft (13), and the limiting seat (17) is abutted against the supporting pipe (16).

6. A small flow circulation pump according to claim 1, wherein: one side that second pump case (9) is close to first pump case (3) is connected with annular seal dish (5), and first connection shirt rim (4) are installed in first pump case (3), and the edge of first connection shirt rim (4) and annular seal dish (5) passes through bolt-up.