CN216044473U

CN216044473U - Self-flushing device for pump

Info

Publication number: CN216044473U
Application number: CN202122013236.7U
Authority: CN
Inventors: 王辉; 尹娉婷; 吴宏飞; 汪波
Original assignee: Zhejiang Nanfang Pump Industry Co ltd
Current assignee: Zhejiang Nanfang Pump Industry Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-03-15
Anticipated expiration: 2031-08-25

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a self-flushing device for a pump, which comprises a pump head, wherein one end of the pump head is provided with a connecting pipe, one end of the connecting pipe is provided with a water outlet bent pipe, an inner connecting pipe is arranged in the connecting pipe, one end of the inner connecting pipe is fixed in the pump head, and the other end of the inner connecting pipe and the water outlet bent pipe are fixed through a sealing device; sealing device one side is provided with from washing unit, from washing unit includes Y type filter, Y type filter end of intaking is provided with the inlet tube, Y type filter end is provided with the solenoid valve, solenoid valve one end is provided with the blow off pipe, Y type filter outlet end is provided with the delivery port, delivery port one side is provided with the screw axle sleeve, screw axle sleeve fixed mounting is on the transmission shaft, the inlet tube mouth of pipe is fixed in the elbow that goes out. The device can automatically wash the pump with the pressure equal to that of the shaft seal at the outlet of the pump without adopting an external water source, and has reasonable structure and simple operation.

Description

Self-flushing device for pump

Technical Field

The utility model belongs to the technical field of water pumps, and particularly relates to a self-flushing device for a pump.

Background

The pump has the characteristics of high efficiency, reliable operation, quick start, compact structure and the like, is widely suitable for the industries of electric power, water supply, metallurgy, fire control, mine, steel, municipal administration and the like to convey media such as clear water, rainwater, seawater, ferric oxide skin water and the like with the temperature lower than 60 ℃, has no external clean water source on site for the media containing impurities or the water source pressure can not meet the requirement, can be designed according to the clear water structure, has quick loss on the rotating part and the static part of the pump, and has the defects of short maintenance period of a user and the like; for the pump with the pump outlet pressure equal to the pressure at the shaft seal, the pump can not adopt a self-flushing mode and only can adopt an external water source, so that the user cost is increased.

SUMMERY OF THE UTILITY MODEL

The present invention provides a self-flushing device for a pump, which solves the problems of the background art.

In order to achieve the purpose, the utility model adopts the technical scheme that: a self-flushing device for a pump comprises a pump head, wherein one end of the pump head is provided with a connecting pipe, one end of the connecting pipe is provided with a water outlet bent pipe, an inner connecting pipe is arranged in the connecting pipe, one end of the inner connecting pipe is fixed in the pump head, and the other end of the inner connecting pipe and the water outlet bent pipe are fixed through a sealing device; one end of the sealing device is provided with a fixed seat, one end of the fixed seat is provided with a motor, the output end of the motor penetrates through the fixed seat and is fixed with a transmission shaft, and one end of the transmission shaft penetrates through an inner connecting pipe and extends into a pump head and is fixed with an impeller; sealing device one side is provided with from washing unit, from washing unit includes Y type filter, Y type filter end of intaking is provided with the inlet tube, Y type filter end is provided with the solenoid valve, solenoid valve one end is provided with the blow off pipe, Y type filter outlet end is provided with the delivery port, delivery port one side is provided with the screw axle sleeve, screw axle sleeve fixed mounting is on the transmission shaft, the inlet tube mouth of pipe is fixed in the elbow that goes out.

As a further improvement of the above technical solution, the impeller is provided with a water outlet.

As a further improvement of the above technical solution, the transmission shaft is movably mounted in an inner connecting tube, and the inner connecting tube is fixedly mounted in a connecting tube.

As a further improvement of the technical scheme, a filter screen is arranged at the water pump opening of the pump head.

As a further improvement of the technical scheme, the direction of fluid delivery when the screw shaft sleeve rotates is a pipe in the inner cavity of the pump.

Compared with the prior art, the utility model has the advantages that:

1. the pump which can automatically wash the pump with the pressure equal to the pressure at the shaft seal position at the outlet of the pump is adopted, an external water source is not needed, and the operation is simple.

2. The utility model has the advantages of simple structure, convenient installation and simple and convenient maintenance.

Drawings

Fig. 1 is a front sectional structural schematic view of the working state of the present invention.

Fig. 2 is a front sectional structural schematic view of the self-flushing device of the present invention.

In the figure: 1. a pump head; 2. a connecting pipe; 3. an inner connecting pipe; 4. a drive shaft; 5. a water outlet bent pipe; 6. a sealing device; 7. a self-flushing device; 8. a motor; 9. a motor fixing seat; 10. an impeller; 11. a filter screen; 701. a screw boss; 702. a water outlet; 703. a Y-type filter; 704. a water inlet pipe; 705. an electromagnetic valve; 706. a sewage discharge pipe.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Referring to fig. 1 to 2, in a specific embodiment, a self-flushing device for a pump includes a pump head 1, a connecting pipe 2 is fixed to one end of the pump head 1 in a threaded manner, a water outlet bent pipe 5 is fixed to one end of the connecting pipe 2 in a threaded manner, an inner connecting pipe 3 is arranged in the connecting pipe 2, one end of the inner connecting pipe 3 is fixed in the pump head 1, and the other end of the inner connecting pipe 3 is fixed to the water outlet bent pipe 5 through a sealing device 6; a fixed seat 9 is arranged at the upper end of the sealing device 6, a motor 8 is fixed at one end of the fixed seat 9, a transmission shaft 4 is fixed at the output end of the motor 8 after penetrating through the fixed seat 9, an impeller 10 is fixed at one end of the transmission shaft 4 after penetrating through the inner connecting pipe 3 and extending into the pump head 1, and the impeller 10 is rotatably installed in the pump head 1; 6 one side of sealing device is provided with from washing unit 7, include Y type filter 703 from washing unit 7, Y type filter 703 intakes the end and installs inlet tube 704, solenoid valve 705 is installed to Y type filter 703 filter end, and in this embodiment, solenoid valve 705 is preferably timing solenoid valve, solenoid valve 705 one end is provided with blow off pipe 706, the drain of blow off pipe 706 is fixed in the pump body outside, delivery port 702 is installed to Y type filter 703 outlet end, delivery port 702 one side is provided with screw shaft sleeve 701, screw shaft sleeve 701 welded fastening is on transmission shaft 4, the mouth of pipe of inlet tube 4 is fixed in outlet elbow 5.

As a preferred aspect of the above embodiment, as shown in fig. 1, the impeller 10 is provided with a water discharge port. The fluid which is flushed out of the inner cavity of the pump can be discharged, and the self-flushing circulation is completed.

As a preferable aspect of the above embodiment, as shown in fig. 1, the transmission shaft 4 is movably mounted in the inner joint pipe 3, and the inner joint pipe 3 is fixedly mounted in the connection pipe 2. Through above structure, guarantee to wash the position and be 3 inner walls of inner joint pipe and 4 outer walls of transmission shaft, be the pump pumping channel between 3 outer walls of inner joint pipe and the connecting pipe 2.

As a preferable mode of the above embodiment, as shown in fig. 1, a filter screen 11 is provided at the water outlet of the pump head 1. Prevent foreign matters from entering the pump body and damaging or polluting the internal structure.

As a preferable mode of the above embodiment, as shown in fig. 2, the direction of fluid transfer when the screw boss 701 rotates is the pump lumen inner tube 3. When the driving shaft 4 rotates to drive the impeller 10 to rotate for pumping water, the screw shaft sleeve 701 is driven to suck water towards the direction of the inner connecting pipe 3, so that the pump can automatically flush the inner cavity of the pump.

The utility model has the specific working principle that: an operator puts the pump head 1 under water, so that the device is filled with water, then the motor 8 is started, the motor 8 drives the transmission shaft 4 to start rotating, and then the impeller 10 fixed at one end of the transmission shaft 4 rotates to pump water into the connecting pipe 2 and out of the water outlet bent pipe 5; the rotation of the transmission shaft 4 simultaneously drives the screw shaft sleeve 701 to rotate, in the sealing device 6, the rotation of the screw shaft sleeve 701 can generate attraction force, so that water at the water outlet elbow 5 is sucked into the Y-shaped filter 703 through the water inlet pipe 704 of the Y-shaped filter 703 to be filtered, the timing electromagnetic valve is set for a good time, when the time is up or at intervals, the timing electromagnetic valve is opened to flush the Y-shaped filter 703, and sewage after the flushing of the Y-shaped filter 703 is discharged out of the pump body through the sewage discharge pipe 706; the filtered water entering the screw shaft sleeve 701 from the water outlet 702 enters the inner connecting pipe 3 along with the rotation of the screw shaft sleeve 701 to flush the inner cavity of the pump, and the flushed water is discharged from the water outlet of the impeller 10 to finish the whole process of self-flushing.

It should be noted that, in this document, 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.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the utility model using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the utility model.

Claims

1. The self-flushing device for the pump comprises a pump head (1) and is characterized in that one end of the pump head (1) is provided with a connecting pipe (2), one end of the connecting pipe (2) is provided with a water outlet bent pipe (5), an inner connecting pipe (3) is arranged in the connecting pipe (2), one end of the inner connecting pipe (3) is fixed in the pump head (1), and the other end of the inner connecting pipe (3) is fixed with the water outlet bent pipe (5) through a sealing device (6); a fixed seat (9) is arranged at one end of the sealing device (6), a motor (8) is arranged at one end of the fixed seat (9), a transmission shaft (4) is fixed at the output end of the motor (8) through the fixed seat (9), and an impeller (10) is fixed at one end of the transmission shaft (4) which penetrates through the inner connecting pipe (3) and extends into the pump head (1); sealing device (6) one side is provided with from washing unit (7), from washing unit (7) including Y type filter (703), Y type filter (703) are intake and are held and are provided with inlet tube (704), Y type filter (703) are filtered and are held and are provided with solenoid valve (705), solenoid valve (705) one end is provided with blow off pipe (706), Y type filter (703) water outlet end is provided with delivery port (702), delivery port (702) one side is provided with screw axle sleeve (701), screw axle sleeve (701) fixed mounting is on transmission shaft (4), inlet tube (704) mouth of pipe is fixed in outlet elbow (5).

2. Self-flushing device for pumps according to claim 1, characterized in that the impeller (10) is provided with a drain.

3. Self-flushing device for pumps according to claim 1, characterized in that said transmission shaft (4) is movably mounted in an inner nipple (3), said inner nipple (3) being fixedly mounted in the connection pipe (2).

4. Self-flushing device for pumps according to claim 1, characterized in that the pump head (1) is provided with a filter screen (11) at the water intake.

5. Self-flushing device for pumps according to claim 1, characterized in that the direction of the fluid delivery when the screw hub (701) is rotated is the pump intraluminal nipple (3).