CN210859232U

CN210859232U - Vertical chemical pump

Info

Publication number: CN210859232U
Application number: CN201921740080.9U
Authority: CN
Inventors: 刘爱萍
Original assignee: Guangzhou Henghui Electronic Equipment Co ltd
Current assignee: Guangzhou Henghui Electronic Equipment Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-06-26
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a vertical chemical pump, which comprises a pump cover, an impeller and a pump shell, wherein the impeller comprises a front cover plate, a rear cover plate and a plurality of arc-shaped blades, the front cover plate is provided with a water inlet, and the edge of the water inlet is provided with an annular flange; the pump shell is provided with a first opening and a liquid outlet and is connected with the pump cover, and the impeller is arranged in a space formed by connecting the pump shell and the pump cover; the pump cover is provided with a filtrate channel and a filter screen, a stepped annular groove is formed between the filter screen and the edge of the pump cover, and a plurality of radial reinforcing ribs are arranged in the annular groove. The utility model adopts the above structure, it is complementary with the structure of the filtrating passageway on the pump cover through the annular flange, realize the improvement to vertical pump stability, strengthen the structural strength of pump cover, prolonged the life of equipment, overall structure is simple, easily realizes.

Description

Vertical chemical pump

Technical Field

The utility model relates to a filtration pump technical field specifically is a vertical chemical industry pump.

Background

The pump is a machine for conveying fluid or pressurizing fluid, and can transfer the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, and is mainly used for conveying liquid, such as water, oil, acid-base solution, emulsion, suspoemulsion and liquid metal, etc., and can also be used for conveying liquid, gas mixture and liquid containing suspended solid matter. When the traditional pump is used, the impeller is unbalanced in work due to vibration of the motor during rotation, so that equipment is unstable, and the use safety of the equipment is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vertical chemical industry pump, the pump cover structural strength who has solved ordinary vertical pump is limited to at the operation in-process, impeller vibration range is too big, causes the equipment unstability, problem of inefficiency.

In order to achieve the above object, the utility model provides a following technical scheme:

a vertical chemical pump comprises a pump cover, an impeller and a pump shell, wherein the impeller comprises a front cover plate, a rear cover plate and a plurality of arc-shaped blades arranged between the front cover plate and the rear cover plate; a first shaft hole is axially formed in the rear cover plate, a second cylinder extends out of the shaft part of the rear cover plate, and a connecting channel communicated with the first through hole is formed in the second cylinder;

the connecting channel is connected with a pump shaft in a clamping mode, one end of the pump shaft extends out of the connecting channel and is connected with the nut through the first shaft hole, and the other end of the pump shaft is connected with the motor torque;

the pump shell is provided with a first opening and a liquid outlet, the first opening is provided with internal threads and is used for being in threaded connection with the pump cover, and the impeller is arranged in a space formed by connecting the pump shell and the pump cover; the geometric center of the first opening and the geometric center are positioned on the same axis;

the pump cover is provided with a filtrate channel penetrating through the pump cover, an opening at one end of the filtrate channel is connected with a filter screen, and an annular flange at the water inlet of the impeller extends into the filtrate channel and is sleeved with the other end of the filtrate channel;

a stepped annular groove is formed between the filter screen and the edge of the pump cover, and a plurality of radial reinforcing ribs are arranged in the annular groove.

Preferably, the reinforcing rib extends along the height direction of the pump cover, one side of the reinforcing rib is connected with the bottom of the annular groove, and the other side of the reinforcing rib is flush with the edge of the pump cover.

Preferably, a key groove is formed in the connecting channel and is matched with a key arranged on the pump shaft.

Preferably, the pump cover is provided with first cylinders which are symmetrically distributed, and the first cylinders are axially provided with fixing grooves.

Preferably, the first cylinder is arranged on one side, close to the edge of the cover body of the pump cover, of the reinforcing rib and is equal to the reinforcing rib in height.

Preferably, the filter screen is detachably connected with the pump cover.

Compared with the prior art, the beneficial effects of the utility model are that: this vertical pump is used for filtering liquid and carries, through cup jointing of the filtrating passageway that impeller water inlet department annular flange and pump cover established, stabilizes impeller rotational position to through the notch cuttype ring channel that pump cover department set up, adopt the strengthening rib to be connected with the pump cover, strengthen the structural strength of pump cover, keep holistic stability in the vertical pump working process.

Drawings

FIG. 1 is an exploded view of the overall structure of a vertical chemical pump;

FIG. 2 is another schematic view of an exploded structure of the overall structure of a vertical chemical pump;

FIG. 3 is a schematic structural diagram of a pump cover in a vertical chemical pump;

FIG. 4 is a schematic side view of an impeller of a vertical chemical pump;

FIG. 5 is a schematic view of the internal structure of an impeller in a vertical chemical pump;

FIG. 6 is a schematic structural view of the bottom surface of an impeller in a vertical chemical pump;

1-pump cover; 2-an impeller; 3-a pump housing; 101-reinforcing ribs; 102-a screen; 103-an annular groove; 104-a filtrate channel; 105-a first cylinder; 201-annular flange; 202-front cover plate; 203-blade; 204-rear cover plate; 206-a second cylinder; 207-water inlet; 208-a first shaft hole; 209-connecting channel; 210-a nut; 211-a keyway; 212-a pump shaft; 301-a liquid outlet; 302-a first opening; 303 — a second opening;

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.

It should be noted that the terms of left, right, upper and lower directions in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.

It will be understood that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or it can be indirectly fixed to or disposed on the other element through a third member. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element through a third component.

Referring to fig. 1 to 6, in an embodiment of the present invention, a vertical chemical pump is provided, including a pump cover 1, an impeller 2 and a pump case 3, where the impeller 2 includes a front cover plate 202, a rear cover plate 204 and a plurality of arc-shaped blades 203 arranged between the front cover plate and the rear cover plate, and a water inlet 207 is arranged on the front cover plate 202, and is characterized in that an annular flange 201 is arranged at an edge of the water inlet 207; and the back cover plate 204 is axially provided with a first shaft hole 208, the shaft part of the back cover plate 204 extends out of a second cylinder 206, a connecting channel 209 communicated with the first shaft hole 208 is arranged in the second cylinder 206, and the periphery of the cylinder of the second cylinder 206 is matched with the pump shell 3 at a small distance.

A pump shaft is clamped in the connecting channel 209, one end of the pump shaft extends out of the connecting channel 209 and is connected with the first shaft hole 208 and the nut 210, and the other end of the pump shaft is connected with the motor through torque; in order to prevent the impeller from axially moving, the pump shaft 212 is pushed to a proper position only during installation, that is, the pump shaft penetrates through the connecting channel 209 and extends out of the first shaft hole 208, the shaft head of the pump shaft 212 is screwed and fixed with the nut 210, and a gasket is further arranged on one side of the nut 210 close to the connecting channel 209.

A key groove 211 is further formed in the connecting channel 209, and the key groove 211 is matched with a key formed in the pump shaft and used for clamping the pump shaft and the impeller 2.

The pump shell 3 is provided with a first opening 302, a second opening 303 and a liquid outlet 301, the first opening 302 is provided with internal threads for being in threaded connection with the pump cover 1, and the internal threads are also provided with sealing rings; the impeller 2 is arranged in a space formed by connecting the pump shell 3 and the pump cover 1, the first opening 302 faces the direction of the pump cover 1, and the second opening 303 faces the direction of a motor fixing seat (not shown in the figure) and is fixedly connected with the motor fixing seat; the geometric center of the first opening 302 and the geometric center of the connecting channel 209 are located on the same axis.

The pump shell is also provided with a screw hole for water filling and water discharging so as to be used for filling water and discharging air in the pump shell before the water pump is started, and accumulated water is emptied during maintenance.

In this embodiment, the number of the blades is 7, the inner cavity of the pump case 3 is in a volute channel shape, the section between the rotation direction of the impeller outlet surrounded by the adjacent arc-shaped blades 203, the front cover plate and the rear cover plate and the inner side of the pump case cavity is gradually increased, so that the internal circulation flow can be reduced, the energy loss is reduced, and the working efficiency of the vertical pump is improved.

The pump cover 1 is provided with a filtrate channel 104 penetrating through the pump cover, an opening at one end of the filtrate channel 104 is connected with a filter screen 102, and an annular flange 201 at the water inlet of the impeller 2 extends into the filtrate channel 104 and is sleeved with the other end of the filtrate channel; the annular flange 201 is complementary to the filtrate channel 104 in structure, and the diameter of the outer edge of the annular flange 201 is slightly smaller than the aperture of the filtrate channel 104, that is, when the motor shaft drives the pump shaft to rotate in linkage with the impeller, the annular flange 201 is always in the filtrate channel 104, and the pump shaft is made of stainless steel.

A stepped annular groove 103 is formed between the filter screen 102 and the edge of the pump cover 1, a plurality of radial reinforcing ribs 101 are arranged in the annular groove 103, and the structural strength of the pump cover is improved while the area of the pump cover in threaded connection with the pump shell 3 is not reduced. The reinforcing ribs 101 extend along the height direction of the pump cover 1, one side of each reinforcing rib is connected with the bottom of the stepped annular groove, and the other side of each reinforcing rib is flush with the edge of the pump cover 1.

The liquid outlet 301 is connected with an outlet flange for connecting one end of the liquid outlet pipe and conveying the filtered liquid.

The surface of the pump cover 1 is provided with first cylinders 105 which are symmetrically distributed, the first cylinders 105 are axially provided with fixing grooves, the first cylinders 105 are arranged on one side, close to the edge of the cover body of the pump cover 1, of the reinforcing rib 101 and are as high as the reinforcing rib 101, when impellers with different blade numbers need to be replaced or the vertical pump is integrally disassembled and cleaned, only the fixing devices matched with the first cylinders 105 need to be used, the fixing devices are inserted into the fixing grooves, the length of the force arm is increased due to the position setting of the first cylinders 105, the force required by rotation is reduced, and the pump cover 1 can be disassembled from the pump shell 3 through rotation.

The outer wall of the pump shell is connected with reinforcing ribs, so that the stability of the pump shell structure is enhanced.

The filter screen 102 is detachably connected with the pump cover 1, and when part of filter holes are blocked or damaged, the filter screen can be cleaned or replaced only by detaching the filter screen, so that the treatment is convenient.

The impeller structure is formed in one step by adopting a die pressing process, and is made of engineering plastics by adopting an injection molding process, so that the processing cost is reduced.

To sum up, the utility model provides a vertical chemical pump, in the actual production process, this design adopts pump cover 1 to be connected with one side down of filter screen 102, and under the normality, annular flange 201 is located filtrating passageway 104 promptly, and filtrating can not flow to the motor shaft in, avoids causing the unnecessary loss. Before the vertical pump starts to operate, the inner cavity of the pump shell 3 and the filtrate channel 104 are filled with filtrate. The pump shaft 212 is driven by the motor shaft to be linked with the impeller 2 to rotate, and under the action of inertial centrifugal force, liquid moves radially from the center of the impeller to the periphery and is conveyed to the liquid outlet 301 along the volute channel. Because the annular flange 201 arranged at the edge of the impeller water inlet 207 is matched with the filtrate channel 104 arranged on the cover body 1, the impeller can keep balance in the working process, the working performance of the impeller is ensured, and the impeller is prevented from being damaged due to axial inclination. And the annular groove 103 is combined with the reinforcing rib 101, so that the structural strength of the pump cover 1 is enhanced, and the integral stability of the vertical pump in the working process is kept.

The vertical pump has reasonable structure and simple operation, and is suitable for wide social use.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and that any reference signs in the claims shall not be construed as limiting the claims so far as they are concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A vertical chemical pump comprises a pump cover (1), an impeller (2) and a pump shell (3), wherein the impeller (2) comprises a front cover plate (202), a rear cover plate (204) and a plurality of arc-shaped blades (203) arranged between the front cover plate and the rear cover plate, a water inlet (207) is arranged on the front cover plate (202), and the vertical chemical pump is characterized in that an annular flange (201) is arranged at the edge of the water inlet (207); a first shaft hole (208) is axially formed in the rear cover plate (204), a second cylinder (206) extends from the shaft part of the rear cover plate (204), and a connecting channel (209) communicated with the first shaft hole (208) is formed in the second cylinder (206);

the pump shaft (212) is clamped in the connecting channel (209), one end of the pump shaft (212) extends out of the connecting channel (209) and is connected with the first shaft hole (208) and the nut (210), and the other end of the pump shaft is connected with the motor through torque;

the pump shell (3) is provided with a first opening (302) and a liquid outlet (301), the first opening (302) is provided with internal threads and is used for being in threaded connection with the pump cover (1), and the impeller (2) is arranged in a space formed by connecting the pump shell (3) and the pump cover (1); the geometric center of the first opening (302) and the geometric center of the connecting channel (209) are positioned on the same axis;

the pump cover (1) is provided with a filtrate channel (104) penetrating through the pump cover, an opening at one end of the filtrate channel (104) is connected with a filter screen (102), and an annular flange (201) at a water inlet of the impeller (2) extends into the filtrate channel (104) to be sleeved with an opening at the other end of the filtrate channel;

a stepped annular groove (103) is arranged between the filter screen (102) and the edge of the pump cover (1), and a plurality of radial reinforcing ribs (101) are arranged in the annular groove (103).

2. The vertical chemical pump according to claim 1, wherein the reinforcing ribs (101) extend along the height direction of the pump cover (1), one side of each reinforcing rib is connected with the bottom of the stepped annular groove, and the other side of each reinforcing rib is flush with the edge of the pump cover (1).

3. The vertical chemical pump according to claim 2, characterized in that a key groove (211) is arranged in the connecting channel (209), and the key groove (211) is matched with a key arranged on the pump shaft (212).

4. The vertical chemical pump as claimed in claim 3, wherein the pump cover is provided with symmetrically distributed first cylinders (105), and the first cylinders (105) are axially provided with fixing grooves.

5. The vertical chemical pump according to claim 4, wherein the first cylinder (105) is disposed on one side of the stiffener near the cover edge of the pump cover (1) and is as high as the stiffener (101).

6. The vertical chemical pump according to any one of claims 1 to 5, characterized in that the filter screen (102) is detachably connected with the pump cover (1).