CN216241531U

CN216241531U - Millstone type sand prevention device for submersible electric pump

Info

Publication number: CN216241531U
Application number: CN202122830279.4U
Authority: CN
Inventors: 刘泽彬
Original assignee: Zibo Yanbin Pump Co ltd
Current assignee: Zibo Yanbin Pump Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-04-08
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses a millstone type sand prevention device for a submersible electric pump, which comprises a sand prevention device body fixed on a pump shaft, wherein a plurality of stirring grooves are arranged on the outer wall array of the sand prevention device body, the included angle between each stirring groove and the pump shaft is forty-five degrees, a mounting screw hole is formed in the middle of the side wall of the sand prevention device body, a connecting screw rod is connected with the mounting screw hole in an internal thread manner, the inner end of the sand prevention device body is abutted against the outer wall of the pump shaft, the connecting screw rod is screwed into the mounting screw hole and abutted against the side wall of the pump shaft through the mounting screw hole, so that the sand prevention device body and the pump shaft are fixed, the connecting screw rod is driven by the pump shaft to rotate, a vortex is formed by the stirring grooves on the outer wall of the sand prevention device body, sand sundries deposited on the shaft section in a stop state of the water pump are stirred and discharged along with water flow, the sand prevention device body is convenient to mount and dismount due to the arrangement of the connecting screw rod, and the sand prevention device body is more firmly fixed, the service life of the sand control device body is prolonged.

Description

Millstone type sand prevention device for submersible electric pump

Technical Field

The utility model belongs to the technical field of submersible pumps, and particularly relates to a millstone type sand prevention device for a submersible electric pump.

Background

The deep well submersible pump is completely submerged, and the suction inlet and the pump flow channel are filled with water. The submersible motor is started to drag the impeller of the water pump to rotate at a high speed, water in the impeller flow passage is ejected outwards under the action of centrifugal force and pressed into the diversion shell, a vacuum low-pressure area is formed at the impeller inlet at the moment, water in a water well (pool) flows into the pump through the suction inlet under the external atmospheric pressure, and then the sucked water is thrown out by the impeller and enters the water pumping pipe through the diversion shell. The impeller of the pump continuously rotates to continuously absorb and press water, and the water source is continuously pumped from a low position and is lifted to a high position or a far position.

In order to prevent sand from entering a rotating shaft, a sand prevention device is required to be installed at a position, corresponding to an upper guide assembly, of the rotating shaft of a motor, the sand prevention device in the prior art is usually fixed by pins, and a fixing structure is not firm enough and easy to loosen.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a millstone type sand prevention device for a submersible electric pump, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dull-witted for submerged motor pump mill formula sand prevention ware, is including fixing the sand prevention ware body at the pump epaxial, the outer wall array of sand prevention ware body is provided with a plurality of stirring grooves, the contained angle is forty-five degrees between stirring groove and the pump shaft, the installation screw has been seted up at the lateral wall middle part of sand prevention ware body, installation screw female connection has connecting screw, sand prevention ware body inner end offsets with the pump shaft outer wall.

Preferably, the center of the outer end of the connecting screw rod is provided with a screw rod rotary groove, and the cross section of the screw rod rotary groove is of a regular hexagon structure.

Preferably, a rotary groove protective plug is filled in the screw rotary groove, and the rotary groove protective plug and the screw rotary groove are in interference fit.

Preferably, the lower end of the pump shaft is sleeved with an upper guide assembly, and the lower end of the sand control device body is abutted to the upper guide assembly.

Preferably, the lower end of the sand control device body is provided with a first sealing surface and a second sealing surface corresponding to the upper guide assembly, and a third sealing surface is arranged on the contact surface between the center of the sand control device body and the pump shaft.

Preferably, the inner wall of the third sealing surface is fixedly connected with a static sealing sleeve, the static sealing sleeve abuts against the outer wall of the pump shaft, and a rotary sealing gasket is arranged between the second sealing surface and the upper end of the upper guide assembly in a cushioning mode.

Preferably, the surface of the first sealing surface is provided with a running-in protrusion.

Compared with the prior art, the utility model has the beneficial effects that:

(1) this dull and stereotyped sand prevention ware of mill for submerged motor pump, through setting up the installation screw, the lateral wall with the pump shaft offsets behind the connecting screw in installation screw, make and fix between sand prevention ware body and the pump shaft, thereby make connecting screw driven by the pump shaft and rotate, the stirring tank that utilizes sand prevention ware body outer wall forms the swirl, be convenient for stir the sand debris of depositing at the shaft part under the water pump shut-down state and discharge along with rivers, connecting screw's the installation and the dismantlement of sand prevention ware body of being convenient for that set up, and it is more firm to make sand prevention ware body fix, the life of sand prevention ware body has been improved.

(2) This submerged motor pump is with mill formula sand prevention ware through the sealed face of first sealed face, second and the third that sets up for sand prevention ware body when rotating and last lead assembly between keep sealed, avoid the sand grain to get into the contact surface between last lead assembly and the pump shaft, then protection is led assembly and pump shaft, avoids leading the pump body damage that the wearing and tearing of assembly and pump shaft lead to on.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

FIG. 3 is a perspective view of the present invention after installation;

fig. 4 is a side cross-sectional view of the present invention after installation.

In the figure: 1. a sand control body; 2. a stirring tank; 3. mounting a screw hole; 4. a first sealing surface; 5. a second sealing surface; 6. a third sealing surface; 7. grinding in the protrusions; 8. assembling a guide assembly; 9. a pump shaft; 10. connecting a screw rod; 11. rotating the groove by the screw; 12. a rotary groove protection plug; 13. a static seal cartridge; 14. the sealing gasket is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a millstone type sand prevention device for a submersible electric pump, which comprises a sand prevention device body 1 fixed on a pump shaft 9, wherein the outer wall array of the sand prevention device body 1 is provided with a plurality of stirring grooves 2, an included angle between each stirring groove 2 and the pump shaft 9 is forty-five degrees, the middle part of the side wall of the sand prevention device body 1 is provided with a mounting screw hole 3, the mounting screw hole 3 is internally threaded with a connecting screw rod 10, and the inner end of the sand prevention device body 1 is abutted against the outer wall of the pump shaft 9.

In this embodiment, preferably, the center of the outer end of the connecting screw 10 is provided with a screw rotating groove 11, and the cross section of the screw rotating groove 11 is in a regular hexagon structure; through the screw rod rotary groove 11 that sets up, can rotate connecting screw rod 10 through the allen key, the installation of connecting screw rod 10 of being convenient for to the embedded structure of screw rod rotary groove 11 can effectively avoid rotating the wearing and tearing of in-process connecting screw rod 10, guarantees connecting screw rod 10's normal use.

In this embodiment, preferably, the screw rotary groove 11 is filled with a rotary groove protection plug 12, and the rotary groove protection plug 12 and the screw rotary groove 11 are in interference fit; through the rotary groove protection plug 12 that sets up, the rotary groove protection plug 12 forms effectual protection for the screw rod rotary groove 11, avoids the wearing and tearing of screw rod rotary groove 11, has guaranteed the normal dismouting of connecting screw rod 10 when maintaining.

In this embodiment, preferably, the lower end of the pump shaft 9 is sleeved with the upper guide assembly 8, and the lower end of the sand control body 1 abuts against the upper guide assembly 8; the sand prevention effect at the positions of the upper guide assembly 8 and the pump shaft 9 is ensured through the contact of the sand prevention device body 1 and the upper guide assembly 8.

In this embodiment, preferably, the lower end of the sand control device body 1 is provided with a first sealing surface 4 and a second sealing surface 5 corresponding to the upper guide assembly 8, and a third sealing surface 6 is arranged on the contact surface between the center of the sand control device body 1 and the pump shaft 9; the sand control device body 1 is in contact seal with the upper guide assembly 8 through the arranged first sealing surface 4 and the arranged second sealing surface 5, and the seal of the contact surface of the sand control device body 1 and the pump shaft 9 is maintained through the arranged third sealing surface 6.

In the embodiment, preferably, the inner wall of the third sealing surface 6 is fixedly connected with a static sealing sleeve 13, the static sealing sleeve 13 abuts against the outer wall of the pump shaft 9, and a rotary sealing gasket 14 is arranged between the second sealing surface 5 and the upper end of the upper guide assembly 8; through the static seal cover 13, the sealing effect of the contact surface of the sand control device body 1 and the pump shaft 9 is improved, and through the rotary seal gasket 14, the friction between the sand control device body 1 and the upper end of the upper guide assembly 8 is reduced, and meanwhile, the abrasion is reduced.

In this embodiment, it is preferable that the surface of the first sealing surface 4 is provided with a running-in protrusion 7; through the running-in protrusion 7, the running-in protrusion 7 and the upper end of the upper guide assembly 8 are worn to generate a running-in surface, and the sealing effect of the first sealing surface 4 is improved.

The working principle and the using process of the utility model are as follows: when the device uses, through setting up installation screw 3, connecting screw 10 offsets with the lateral wall of pump shaft 9 behind the screw in installation screw 3, make fixedly between sand prevention ware body 1 and the pump shaft 9, thereby make connecting screw 10 driven by pump shaft 9 and rotate, utilize stirring tank 2 formation swirl of 1 outer wall of sand prevention ware body, be convenient for stir the sand debris of deposiing at the shaft part under the water pump shut down state and discharge along with rivers, connecting screw 10 set up the installation and the dismantlement of sand prevention ware body 1 of being convenient for, and make sand prevention ware body 1 fix more firmly, the life of sand prevention ware body 1 has been improved.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dull and stereotyped sand prevention ware of mill formula for submerged motor pump, is including fixing sand prevention ware body (1) on pump shaft (9), its characterized in that: the sand control device is characterized in that a plurality of stirring grooves (2) are arranged on the outer wall array of the sand control device body (1), included angles between the stirring grooves (2) and the pump shaft (9) are forty-five degrees, installation screw holes (3) are formed in the middle of the side wall of the sand control device body (1), the installation screw holes (3) are connected with connecting screw rods (10) in an internal thread mode, and the inner end of the sand control device body (1) is abutted to the outer wall of the pump shaft (9).

2. The millstone sand control device for the submersible electric pump according to claim 1, characterized in that: the screw rod rotary groove (11) is formed in the center of the outer end of the connecting screw rod (10), and the cross section of the screw rod rotary groove (11) is of a regular hexagon structure.

3. The millstone sand control device for the submersible electric pump according to claim 2, characterized in that: the screw rod rotary groove (11) is filled with a rotary groove protection plug (12), and the rotary groove protection plug (12) is in interference fit with the screw rod rotary groove (11).

4. The millstone sand control device for the submersible electric pump according to claim 1, characterized in that: the lower end of the pump shaft (9) is sleeved with an upper guide assembly (8), and the lower end of the sand prevention device body (1) is abutted to the upper guide assembly (8).

5. The millstone sand control device for the submersible electric pump according to claim 4, characterized in that: the lower end of the sand control device body (1) is provided with a first sealing surface (4) and a second sealing surface (5) corresponding to the upper guide assembly (8), and a third sealing surface (6) is arranged on the contact surface between the center of the sand control device body (1) and the pump shaft (9).

6. The millstone sand control device for the submersible electric pump according to claim 5, characterized in that: the inner wall of the third sealing surface (6) is fixedly connected with a static sealing sleeve (13), the static sealing sleeve (13) is abutted to the outer wall of the pump shaft (9), and a rotary sealing gasket (14) is arranged between the second sealing surface (5) and the upper end of the upper guide assembly (8).

7. The millstone sand control device for the submersible electric pump according to claim 5, characterized in that: the surface of the first sealing surface (4) is provided with a running-in protrusion (7).