CN210859242U

CN210859242U - Vertical chemical pump main part

Info

Publication number: CN210859242U
Application number: CN201921740079.6U
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 main body, which comprises a pump cover, an impeller and a pump shell, wherein the edge of a water inlet of the impeller is provided with an annular flange and is arranged inside a space formed by connecting the pump shell and the pump cover, and the inner side of the pump shell cavity pointed by an impeller water outlet is provided with a track type diversion trench; the pump cover is also provided with a filtrate channel and a filter screen, a stepped annular groove is arranged on the pump cover, and a plurality of radial reinforcing ribs are arranged in the annular groove. The above structure is adopted in the utility model, complementary through the structure of annular flange with the filtrating passageway on the pump cover, stabilize impeller rotational position to reduce the resistance that the medium brought through orbit formula guiding gutter, reduce energy loss, improve the work efficiency of vertical chemical industry pump. Still through being connected of strengthening rib and pump cover, strengthen the structural strength of pump cover, keep holistic stability in the vertical chemical pump working process.

Description

Vertical chemical pump main part

Technical Field

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

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 main part solves the friction loss that conventional vertical chemical industry pump liquid was thrown away from the impeller and is strikeed and produce between spiral case to at the operation in-process, the equipment that pump cover structural strength is limited to cause is unstable, the problem of inefficiency.

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

a vertical chemical pump main body comprises a pump cover, an impeller and a pump shell, wherein the impeller comprises a front cover plate and a rear cover plate, and a water inlet is formed in the front cover plate; the rear cover plate is axially provided with a first through hole, the shaft part of the rear cover plate extends out of a second cylinder, and a connecting channel communicated with the first through hole is arranged in the second cylinder;

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, the impeller is arranged in a cavity formed by connecting the pump shell and the pump cover, the cavity in the pump shell is in a volute channel shape, a diversion trench is arranged on the inner side of the pump shell cavity, which is pointed by the opening of the impeller, and extends along the inner wall of the pump shell cavity until the diversion trench is connected with the liquid outlet;

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.

Furthermore, the reinforcing ribs extend along the height direction of the pump cover, 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.

Furthermore, one side of the reinforcing rib close to the edge of the cover body of the pump cover is provided with a first cylinder, the first cylinders are symmetrically distributed on the pump cover, and a fixing groove is axially arranged.

Furthermore, one end of the pump shell, which is far away from the first opening, is connected with a motor fixing seat, one surface of the motor fixing seat, which is back to the pump shell, is connected with a motor, the torque of the motor penetrates through a second through hole formed in the motor fixing seat and is connected with one end of the pump shaft, and the other end of the pump shaft is clamped with the connecting channel.

Furthermore, one surface of the motor fixing seat, which is back to the pump shell, is provided with a plurality of grooves which are radially distributed by taking the geometric center of the second through hole as the center of a circle, and a fixing plate is arranged between any two adjacent grooves.

Furthermore, the diversion trench is of a section arc structure, and the diversion trench is gradually deepened and widened along the movement direction of the impeller, so that the section of the diversion trench is gradually enlarged.

Furthermore, the filter screen and the pump cover are detachably connected.

Compared with the prior art, the beneficial effects of the utility model are that: this vertical chemical 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 be equipped with orbit formula guiding gutter at the directional pump case intracavity side of impeller export, reduced the resistance that the medium brought, increased flow and pressure in the pump case, make its discharge that can be smooth, reduce energy loss, improve vertical chemical pump's work efficiency.

Drawings

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

FIG. 2 is a schematic view of a bottom exploded view of a vertical chemical pump body;

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

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

FIG. 5 is a schematic structural view of the inside of an impeller in a vertical chemical pump body;

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

wherein, in the drawings, the reference numerals are mainly as follows:

1-pump cover; 2-an impeller; 3-a pump housing; 4-motor fixing seat; 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; 205-guiding gutter; 206-a second cylinder; 207-water inlet; 208-a first via; 209-connecting channel; 210-a nut; 211-a keyway; 212-a shaft sleeve; 213-a pump shaft; 301-a liquid outlet; 302-a first opening; 401-grooves; 402-a second via; 403-fixing plate;

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 main body is provided, including a pump cover 1, an impeller 2 and a pump case 3, where a body of 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, a water inlet 207 is arranged on the front cover plate 202, the water inlet 207 is a circular shape, and an annular flange 201 is arranged at an edge of the water inlet 207; and the rear cover plate 204 is axially provided with a first through hole 208, the shaft part of the rear cover plate 204 extends out of a second cylinder 206, and the second cylinder 206 is axially provided with a connecting channel 209 communicated with the first through hole 208.

In the present embodiment, the number of blades is 7.

A key groove 211 is further formed in the connecting channel 209, and the key groove 211 is matched with a key formed on the pump shaft 213 and used for clamping the pump shaft.

Pump case 3 is equipped with first opening 302 and liquid outlet 301, first opening 302 is equipped with the internal thread for with 1 spiro union of pump cover, impeller 2 sets up in the cavity that forms is connected with pump cover 1 to pump case 3, adopt the cooperation of booth apart from between second cylinder 206 cylinder and the pump case 3.

The connecting channel 209 is clamped with a pump shaft 213, one end of the pump shaft extends out of the connecting channel 209 and is connected with the nut 210 through the first through hole 208, 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 213 is pushed in place only during installation, that is, the pump shaft penetrates through the connecting channel 209 and the first through hole 208, the end of the pump shaft 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.

The inner cavity of the pump shell 3 is in a volute channel shape, that is, the section of an impeller outlet surrounded by adjacent arc-shaped blades 203, a front cover plate 202 and a rear cover plate 204 is gradually increased from the rotating direction to a pump shell side liquid outlet 301.

The inner side of the cavity of the pump shell 3, in which the opening of the impeller 2 points, is also provided with a diversion trench 205, the diversion trench 205 extends along the inner wall of the cavity of the pump shell, the diversion trench 205 is smoothly connected with the inner wall of the liquid outlet 301, the diversion trench 205 is of an arc-shaped structure, and the diversion trench is gradually deepened and widened along the movement direction of the impeller, so that the cross section of the diversion trench is gradually enlarged. When the impeller moves at a high speed in the pump cavity, a medium in the impeller is thrown out of the inner wall of the pump shell to move at a high speed in a centrifugal mode, namely, the medium moves towards the liquid outlet 301 along the volute channel, and along with widening and deepening of the diversion trench, resistance brought by the medium is reduced, so that the medium can be smoothly discharged, flow and pressure in the pump shell 3 are increased, energy loss is reduced, and the working efficiency of the vertical chemical pump is improved.

The pump shell 3 is connected with a motor fixing seat 4, one surface of the motor fixing seat 4, which is back to the pump shell 3, is connected with a motor, the torque of the motor penetrates through a second through hole 402 formed in the motor fixing seat to be connected with one end of a pump shaft, and the other end of the pump shaft is clamped with the connecting channel 209;

motor fixing base 4 is equipped with the one side of backing to pump case 3 and is equipped with a plurality of recesses 401 that use second through-hole geometric centre as the centre of a circle, radial distribution, is equipped with fixed plate 403 between arbitrary adjacent recess 401, be equipped with the screw that is used for fixed motor on the fixed plate 403, when motor load operation, will certainly cause the motor temperature to rise, through the setting of recess, enlarge the cooling passageway of motor for can obtain preliminary cooling when motor load operation.

The motor fixing seat 4 is connected with one side of the pump shell 3 and is provided with a plurality of criss-cross reinforcing ribs, so that the overall vibration in the operation process is reduced, and the stability of the whole vertical chemical pump is influenced.

A shaft sleeve 212 is sleeved outside the pump shaft 213, one end of the shaft sleeve is sleeved with the connecting channel 209 and is additionally provided with a shaft seal device, the other end of the shaft sleeve penetrates through the second through hole to be connected with the motor, a ceramic inner ring is further arranged between the second through hole 402 and the shaft sleeve 212, and the ceramic inner ring is fixedly connected to the inner side of the second through hole 402 and used for preventing the shaft sleeve from shaking to an excessive extent.

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 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 3 is also provided with screw holes for water filling and water discharging so as to be used for filling water and discharging air in the pump shell before the vertical chemical pump is started and emptying accumulated water during maintenance.

The pump cover 1 is provided with a filtrate channel 104 penetrating through the pump cover, one end of the filtrate channel 104 is connected with a filter screen 102, an annular flange 201 at a 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 structurally complementary with the filtrate channel 104, and the diameter of the outer edge of the annular flange 201 is slightly smaller than the aperture of the filtrate channel 104, namely when a motor shaft drives the pump shaft 213 to be linked with the impeller to rotate, the annular flange 201 is always in the filtrate channel 104, and the pump shaft 213 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, and a plurality of radial reinforcing ribs 101 are arranged in the annular groove 103, so that the structural strength of the pump cover 1 is improved. 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 103, and the other side of each reinforcing rib is flush with the edge of the pump cover 1.

The liquid outlet 301 is provided with an outlet flange for connecting a liquid outlet pipe and conveying 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 chemical 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 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 industry pump main part, in the actual production process, this design adopts pump cover 1 to be connected with the one side of filter screen 102 down, and annular flange 201 is located filtrating passageway 104 promptly, and filtrating can not flow backwards to the motor shaft in, avoids causing the unnecessary loss. Before the vertical chemical pump starts to operate, the inner cavity of the pump shell 3 and the filtrate channel 104 are filled with filtrate, so that the cavitation phenomenon is avoided. The pump shaft is driven by the motor shaft to be linked with the impeller 2 to rotate, the track type diversion trench is arranged on the inner side of the pump shell cavity pointed by the impeller outlet, liquid moves radially from the center of the impeller to the periphery under the action of inertial centrifugal force and is conveyed to the liquid outlet 301 along the volute channel, so that the resistance brought by the medium is reduced, the flow and the pressure in the pump shell are increased, the liquid can be smoothly discharged, the energy loss is reduced, and the working efficiency of the vertical chemical pump is improved. 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 2 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 through the combination of the annular groove 103 and the reinforcing rib and the connection of the pump shell 3 and the motor fixing seat 4 with the reinforcing structure, the integral structural strength of the vertical chemical pump is enhanced, and the integral stability of the vertical chemical 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 main body comprises a pump cover (1), an impeller (2) and a pump shell (3), wherein the impeller (2) comprises a front cover plate (202) and a rear cover plate (204), the front cover plate (202) is provided with a water inlet (207), and the vertical chemical pump main body is characterized in that the edge of the water inlet (207) is provided with an annular flange (201); a first through 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 through hole (208) is formed in the second cylinder (206);

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), the impeller (2) is arranged in a cavity formed by connecting the pump shell (3) and the pump cover (1), the cavity in the pump shell (3) is in a volute channel shape, the inner side of the pump shell cavity, towards which the opening of the impeller (2) points, is provided with a diversion trench (205), and the diversion trench (205) extends along the inner wall of the pump shell cavity until being connected with the liquid outlet (301);

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 the other end of the filtrate channel;

a stepped annular groove (103) is formed 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 main body according to claim 1, wherein the reinforcing rib (101) extends along the height direction of the pump cover (1), one side of the reinforcing rib is connected with the bottom of the stepped annular groove (103), and the other side of the reinforcing rib is flush with the edge of the pump cover (1).

3. The vertical chemical pump main body according to claim 2, wherein a first cylinder (105) is arranged on one side of the reinforcing rib (101) close to the cover edge of the pump cover (1), the first cylinder (105) is symmetrically distributed on the pump cover (1), and a fixing groove is axially arranged on the first cylinder (105).

4. The vertical chemical pump main body according to claim 1, wherein one end of the pump shell (3) far away from the first opening (302) is connected with a motor fixing seat (4), one surface of the motor fixing seat (4) back to the pump shell (3) is connected with a motor, the torque of the motor passes through a second through hole (402) formed in the motor fixing seat and is connected with one end of the pump shaft (213), and the other end of the pump shaft (213) is clamped with the connecting channel (209).

5. The vertical chemical pump main body according to claim 4, wherein a plurality of radially distributed grooves (401) are formed in one surface of the motor fixing seat (4) opposite to the pump shell (3) and centered on the geometric center of the second through hole, and a fixing plate is arranged between any two adjacent grooves (401).

6. The vertical chemical pump main body according to claim 5, wherein the diversion trench (205) has an arc-shaped cross section, and the diversion trench is gradually deepened and widened along the moving direction of the impeller (2), so that the cross section of the diversion trench is gradually enlarged.

7. The vertical chemical pump main body according to any one of claims 1 to 6, wherein the filter screen (102) is detachably connected with the pump cover (1).