CN212615401U

CN212615401U - Self-balancing slurry centrifugal pump

Info

Publication number: CN212615401U
Application number: CN202021276786.7U
Authority: CN
Inventors: 岳新建
Original assignee: Zibo Huayan Pump Co ltd
Current assignee: Zibo Huayan Pump Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-26
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a self-balancing slurry centrifugal pump, including base and driving motor, driving motor fixed mounting is on the right side of base top, the drive shaft is connected with the main shaft through the link, the cover has the suspension case outside the right half section of main shaft, right spiral case and left spiral case are equipped with outside the left half section of main shaft, right spiral case threaded connection is on the left side of suspension case, right spiral case and left spiral case threaded connection, the bilobed wheel mechanism is installed outside the left half section of main shaft, bilobed wheel mechanism includes right impeller, baffle and left impeller, right impeller, baffle and left impeller are installed on the main shaft from the right side to the left in proper order, bilobed wheel mechanism is located left spiral case and right spiral case; the device sets the two impellers and the volute into completely symmetrical mounting structures, and realizes complete balance of axial force and radial force of the pump, so that the efficiency of the pump is improved, the problems that the impeller and the volute of the existing slurry centrifugal pump are far away from the mounting position, the radial force of the pump body is unbalanced during working, the pump body generates large vibration easily, and the efficiency of the pump body is reduced are solved.

Description

Self-balancing slurry centrifugal pump

Technical Field

The utility model belongs to the technical field of centrifugal pump equipment, specifically be a self-balancing thick liquids centrifugal pump.

Background

A centrifugal pump is a pump for conveying a liquid by a centrifugal force generated when an impeller rotates, and is widely used in industrial production. The structure of the centrifugal pump in the prior art is briefly described as follows: the pump body volute is provided with a pump body water inlet and a pump body water outlet, and fluid enters the impeller water inlet from the pump body water inlet, flows out of the impeller water outlet to the pump cavity and flows out of the pump body water outlet.

Patent application No. CN201721704463.1, the contents of which are: the utility model belongs to the technical field of centrifugal pump equipment technique and specifically relates to a horizontal split self-balancing multistage centrifugal pump is related to, including the pump body and rotate the pivot of setting on the pump body, still include fan and fan housing, the both ends of the pump body all are provided with the bearing box, the both ends of pivot set up respectively on the bearing box at pump body both ends, it all sets up to lie in bearing box department in the pivot the fan, the fan housing passes through the bearing end cover setting on the bearing box, the fan housing cover is established on the fan, the fan housing with the vacuole formation body between the bearing end cover, the utility model discloses horizontal split self-balancing multistage centrifugal pump is when using, and the baffle through in the fan housing blocks the fan for outside rainwater etc. can't directly reach the fan from the blow vent of fan housing, has improved the life of fan, has guaranteed that fan job stabilization is reliable.

Above-mentioned patent can solve the problem of pump body internal seal, increases life, nevertheless to the installation of whole pump body inside impeller structure unbalance, because thick nature of thick liquids and the adhesion to the internal wall of pump make thick liquids get into the centrifugal pump after, the adhesion pump body leads to the pump body vibrations extremely easily, influences production efficiency.

SUMMERY OF THE UTILITY MODEL

For solving current thick liquids centrifugal pump impeller and spiral case mounted position distance far away, lead to the radial power unbalance of pump body self during operation, lead to the pump body to produce great vibrations easily, reduce the problem of pump body efficiency, the utility model provides a self-balancing thick liquids centrifugal pump.

Aiming at the problems, the specific technical scheme is as follows:

the utility model provides a self-balancing thick liquids centrifugal pump, includes base and driving motor, driving motor fixed mounting is on base top right side, driving motor's drive shaft is towards a left side, the drive shaft is connected with the main shaft through the link, main shaft right side half section outside cover has the suspension box, right spiral case and left spiral case are equipped with to main shaft left side half section outside, right spiral case threaded connection hangs the box left side, right spiral case and left spiral case threaded connection, the section of intaking formation body structure is connected to left spiral case left end, bilobed wheel mechanism is installed in the main shaft left side half section outside, bilobed wheel mechanism includes right impeller, baffle and left impeller, right impeller, baffle and left impeller turn left from the right side and install on the main shaft in proper order, bilobed wheel mechanism is located left spiral case and right spiral case.

Preferably, a sealing cavity is formed between the right volute and the suspension box by the main shaft, and a mechanical sealing element is fixedly mounted on the outer side of the main shaft in the sealing cavity.

Preferably, a shaft sleeve is sleeved on the outer side of the left half section of the main shaft, and the double-impeller mechanism and the mechanical sealing element are installed on the outer side of the shaft sleeve.

The preferred, the link includes drive suspension body and main suspension body, the drive suspension body passes through the key-type connection to be fixed in the drive shaft, the main suspension body passes through the key-type connection to be fixed on the main shaft, threaded connection is passed through to drive suspension body and the main suspension body outside, driving motor passes through the link and drives the main shaft rotation.

Preferably, a shaft nut is installed at the left end of the main shaft, and the shaft nut is installed at the left end of the main shaft in a threaded mode to fix the double-impeller mechanism.

Preferably, bearings are arranged between the two ends of the suspension box and the main shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the device has the advantages that the two impellers and the volute are arranged into the completely symmetrical mounting structure, so that the axial force and the radial force of the pump are completely balanced, the pump body is prevented from being vibrated by slurry, and the efficiency of the pump is improved; and this device forms the seal chamber in the right spiral case, installs mechanical seal in the seal chamber, because bilobed wheel mechanism connects the water inlet section, makes mechanical seal be in the negative pressure end, uses the seal intracavity to be full of sealing liquid, and the pump body internal seal is made with the cooperation of mechanical seal, does not receive impurity interference, has solved the problem that current centrifugal pump seals life is short, simple structure.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of an embodiment of the present invention;

the embodiment of the utility model provides a mainly contain following element symbol:

the device comprises a base-1, a driving motor-2, a driving shaft-201, a connecting frame-3, a driving suspension body-301, a main suspension body-302, a main shaft-4, a shaft sleeve-401, a shaft nut-402, a suspension box-5, a bearing-501, a right volute-6, a left volute-7, a double-impeller mechanism-8, a right impeller-801, a partition-802, a left impeller-803, a sealing cavity-9 and a mechanical sealing element-901.

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 and 2, a self-balancing slurry centrifugal pump includes a base 1 and a driving motor 2, the driving motor 2 is fixedly installed on the right side above the base 1, a driving shaft 201 of the driving motor 2 faces left, the driving shaft 201 is connected with a main shaft 4 through a connecting frame 3, a suspension box 5 is sleeved outside the right half section of the main shaft 4, a right volute 6 and a left volute 7 are installed outside the left half section of the main shaft 4, the right volute 6 is in threaded connection with the left volute 5, the right volute 6 is in threaded connection with the left volute 7, the left end of the left volute 7 is connected with a water inlet section to form an integrated structure, the right volute 6 and the left volute 7 are symmetrically installed, a double-impeller mechanism 8 is installed outside the left half section of the main shaft 4, the double-impeller mechanism 8 includes a right impeller 801, a partition 802 and a left impeller 803, the right impeller 801, the partition 802 and the left impeller 803 are sequentially installed on the main shaft 4, the right impeller 801 and the left impeller 803 are symmetrically installed, and the double-impeller mechanism 8 is positioned in the left volute 7 and the right volute 6.

The device sets the two impellers and the volute into a completely symmetrical mounting structure, realizes complete balance of axial force and radial force of the pump, and avoids the slurry from vibrating the pump body, thereby improving the efficiency of the pump.

The main shaft 4 is positioned between the right volute 6 and the suspension box 5 to form a sealed cavity 9, and a mechanical sealing element 901 is fixedly installed on the outer side of the main shaft 4 in the sealed cavity 9.

A shaft sleeve 401 is sleeved outside the left half section of the main shaft 4, and the double-impeller mechanism 8 and the mechanical sealing element 901 are installed outside the shaft sleeve 401.

This device forms sealed chamber 9 in right spiral case 6, installs mechanical seal 901 in sealed chamber 9, because bilobed wheel mechanism 8 connects the water inlet section, makes mechanical seal 901 be in the negative pressure end, uses to be full of sealing liquid in the sealed chamber 9, and with mechanical seal 901 cooperation make the pump body internal seal, do not receive impurity interference, solved the problem that current centrifugal pump seals life is short, simple structure.

Connecting frame 3 includes drive suspension body 301 and main suspension body 302, drive suspension body 301 passes through the key-type connection to be fixed on drive shaft 201, main suspension body 302 passes through the key-type connection to be fixed on main shaft 4, threaded connection is passed through in drive suspension body 301 and the main suspension body 302 outside, driving motor 2 passes through connecting frame 3 and drives main shaft 4 and rotate.

A shaft nut 402 is installed at the left end of the main shaft 4, and the shaft nut 402 is installed at the left end of the main shaft 4 in a threaded manner to fix the double-impeller mechanism 8.

Bearings 501 are arranged between the two ends of the suspension box 5 and the main shaft 4.

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. The utility model provides a self-balancing thick liquids centrifugal pump, includes base (1) and driving motor (2), driving motor (2) fixed mounting is on base (1) top right side, driving shaft (201) of driving motor (2) are towards left, its characterized in that: the driving shaft (201) is connected with a main shaft (4) through a connecting frame (3), a suspension box (5) is sleeved outside the right half section of the main shaft (4), a right volute (6) and a left volute (7) are arranged outside the left half section of the main shaft (4), the right volute (6) is in threaded connection with the left side of the suspension box (5), the right volute (6) is in threaded connection with the left volute (7), the left end of the left volute (7) is connected with a water inlet section to form an integral structure, a double-impeller mechanism (8) is arranged on the outer side of the left half section of the main shaft (4), the double-impeller mechanism (8) comprises a right impeller (801), a partition plate (802) and a left impeller (803), the right impeller (801), the baffle plate (802) and the left impeller (803) are sequentially arranged on the main shaft (4) from right to left, the double-impeller mechanism (8) is positioned in the left volute (7) and the right volute (6).

2. The slurry centrifugal pump of claim 1, wherein: the main shaft (4) is positioned between the right volute (6) and the suspension box (5) to form a sealing cavity (9), and a mechanical sealing element (901) is fixedly installed on the outer side of the main shaft (4) in the sealing cavity (9).

3. The slurry centrifugal pump of claim 2, wherein: a shaft sleeve (401) is sleeved on the outer side of the left half section of the main shaft (4), and the double-impeller mechanism (8) and the mechanical sealing element (901) are installed on the outer side of the shaft sleeve (401).

4. The slurry centrifugal pump of claim 3, wherein: connecting frame (3) are including drive suspension body (301) and main suspension body (302), drive suspension body (301) are fixed on drive shaft (201) through the key-type connection, main suspension body (302) are fixed on main shaft (4) through the key-type connection, threaded connection is passed through in drive suspension body (301) and main suspension body (302) outside, driving motor (2) drive main shaft (4) through connecting frame (3) and rotate.

5. The slurry centrifugal pump of claim 4, wherein: a shaft nut (402) is installed at the left end of the main shaft (4), and a double-impeller mechanism (8) is fixed at the left end of the main shaft (4) through the threads of the shaft nut (402).

6. The slurry centrifugal pump of claim 5, wherein: and bearings (501) are arranged between the two ends of the suspension box (5) and the main shaft (4).