CN218493899U

CN218493899U - Cavitation prevention device for water feed pump

Info

Publication number: CN218493899U
Application number: CN202222963122.3U
Authority: CN
Inventors: 韩雪林; 袁永涛; 王丽华
Original assignee: Ksb Pump Valve Technical Service Tianjin Co ltd
Current assignee: Ksb Pump Valve Technical Service Tianjin Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-02-17
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a cavitation erosion device is prevented to feed pump, include: the water outlet end of the connecting pipe is communicated with the water inlet end of the water feeding pump, and the water inlet end of the connecting pipe is communicated with a water inlet pipe; the connecting pipe is fixedly communicated with a filter box, a filter plate is arranged in the filter box, the lower part of the filter box is communicated with a slag discharging pipe, the lower part of the slag discharging pipe is communicated with a slag storage bottle, liquid enters the connecting pipe from the water inlet pipe and is filtered by the filter plate when passing through the filter box, and filtered filter residues fall into the slag discharging pipe and fall into the slag storage bottle from the slag discharging pipe, so that residues in the liquid can be effectively filtered, and further the water feeding pump is prevented from being damaged by cavitation; through closing two first valve bodies, can break off liquid and carry, be convenient for dismantle the clearance to the filter.

Description

Cavitation prevention device for water feed pump

Technical Field

The utility model relates to a water-feeding pump technical field specifically is a cavitation erosion device is prevented to water-feeding pump.

Background

The feed pump is suitable for conveying clear water with the temperature lower than 110 ℃ or other non-corrosive liquid with physical and chemical properties similar to water, and is widely used for boiler feed water of industrial, mining, enterprise and public institutions and urban life feed water. The DG type series pump is particularly suitable for boiler water supply, and can also be widely applied to industries such as pressure container water supply, hot water circulation, high-rise building water supply, farmland irrigation, fire control pressurization, hydraulic flushing, food, brewing, medicine, chemical engineering, aquaculture, environmental protection and the like.

The patent of Chinese patent publication No. 2015, 9 and 23 discloses a cavitation-preventing device for a feed pump, which mainly comprises a pressure detector, a controller and a deaerator pressure regulating valve; the pressure detector is arranged on the deaerator and used for detecting the steam pressure value in the deaerator; the input end of the controller is connected with the pressure detector, and the output end of the controller is connected with the deaerator pressure regulating valve; the deaerator pressure regulating valve is arranged on a pipeline from the main steam to the deaerator and used for regulating the steam supply amount from the main steam to the inner part of the deaerator so as to regulate the steam pressure in the deaerator.

The technical problem solved is as follows: and a device for preventing the cavitation of the feed pump under the load shedding working condition of the unit is lacked.

The above patents have disadvantages that: the water supply pump can be prevented from being corroded by cavitation to a certain extent or the damage of the cavitation to the water supply pump is reduced, but the inside of the liquid contains more slag (sediment), so that the overflowing component is easily abraded by the slag when the water supply pump is used, and the damage of the cavitation to the water supply pump is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cavitation erosion device is prevented to water-feeding pump through setting up the filter cartridge, solves the inside more dregs thing that contains of liquid, overflows the part and is easily worn and torn by the dregs thing when leading to the water-feeding pump to use, has increased the problem of cavitation to the damage of water-feeding pump.

In order to achieve the above object, the utility model discloses a main technical scheme include:

a cavitation prevention device for a feed water pump, comprising:

the water outlet end of the connecting pipe is communicated with the water inlet end of the water feed pump, and the water inlet end of the connecting pipe is communicated with a water inlet pipe;

the filter box is fixedly communicated with the connecting pipe, a filter plate is arranged in the filter box, the lower portion of the filter box is communicated with a slag discharging pipe, and the lower portion of the slag discharging pipe is communicated with a slag storage bottle.

As the preferred technical scheme, a slot is formed in one side, close to the water inlet end, of the interior of the filter box, and the filter plate is embedded and inserted in the slot.

According to a preferable technical scheme, the filter box is a square filter box, and the lower part of the filter box is open;

the top of the slag discharging pipe is integrally formed with a sealing plate, and the sealing plate is connected with the lower edge of the filter box through a fixing bolt.

As a preferred technical scheme, the lower end of the slag discharging pipe is provided with an external thread, and the upper end of the slag storage bottle is in threaded connection with the lower end of the slag discharging pipe.

As the preferred technical scheme, two first valve bodies are installed on the connecting pipe, and the two first valve bodies are respectively arranged on the left side and the right side of the filter box.

As a preferred technical scheme, a second valve body is arranged on the slag discharging pipe.

As the preferred technical scheme, a pull ring is fixedly arranged on the filter plate.

As an optimal technical scheme, flanges are welded to the two ends of the connecting pipe, the water inlet end and the water inlet pipe, and the two adjacent flanges are fixedly connected through bolts.

The utility model discloses possess following beneficial effect at least:

the utility model provides a water-feeding pump anti-cavitation device, through liquid from the inlet tube entering connecting pipe, filtered by the filter plate when passing through the filter box, the filter residue that filters falls into the sediment pipe and falls into the inside of sediment bottle from the sediment pipe, can filter the sediment thing in the liquid effectively, further prevent the damage of cavitation to the water-feeding pump;

the liquid conveying can be cut off by closing the two first valve bodies, so that the filter plate is convenient to disassemble and clean;

through closing the second valve body, just with deposit the sediment bottle and dismantle the clearance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of an anti-cavitation device for a water feed pump according to the present invention;

FIG. 2 is a schematic view of a connecting pipe structure of a cavitation prevention device for a water feed pump according to the present invention;

FIG. 3 is an exploded view of a part of the structure of a cavitation prevention device for a water feed pump according to the present invention;

fig. 4 is a schematic structural view of a filter box of the cavitation-preventing device of the water feed pump of the present invention.

The reference numbers illustrate:

1. a connecting pipe; 11. a water inlet end; 12. a water inlet pipe; 2. a filter cartridge; 21. a slot; 3. a filter plate; 31. a pull ring; 4. a first valve body; 5. a slag discharging pipe; 51. sealing plates; 52. fixing the bolt; 53. an external thread; 6. a second valve body; 7. a residue storage bottle; 8. and (4) a flange.

Detailed Description

The embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.

Referring to fig. 1 to 4, an embodiment of the present invention provides a cavitation-preventing device for a water-feeding pump, including: the water outlet end of the connecting pipe 1 is communicated with the water inlet end 11 of the water feeding pump, and the water inlet end of the connecting pipe 1 is communicated with a water inlet pipe 12; the connecting pipe 1 is fixedly communicated with a filter box 2, the filter plate 3 is arranged inside the filter box 2, the lower part of the filter box 2 is communicated with a slag discharging pipe 5, and the lower part of the slag discharging pipe 5 is communicated with a slag storage bottle 7, so that slag in liquid can be effectively filtered, and further damage to a water feeding pump caused by cavitation can be prevented.

Wherein, a slot 21 is arranged at one side of the interior of the filter box 2 close to the water inlet end 11, and the filter plate 3 is embedded and inserted in the slot 21, so that the filter plate 3 is fixed conveniently and the filter plate 3 is convenient to install; the filter box 2 is a square filter box, and the lower part of the filter box 2 is in an opening shape; the top of the slag discharging pipe 5 is integrally formed with a sealing plate 51, and the sealing plate 51 is connected with the lower edge of the filter box 2 through a fixing bolt 52. The filter box 2 is square, so that the filter plate 3 can be conveniently installed, the filter plate 3 can be conveniently disassembled, and the filter plate 3 can be conveniently disassembled, maintained and cleaned; the lower end of the slag discharging pipe 5 is provided with external threads 53, and the upper end of the slag storage bottle 7 is in threaded connection with the lower end of the slag discharging pipe 5, so that the slag storage bottle 7 is convenient to mount and dismount; the two first valve bodies 4 are arranged on the connecting pipe 1, the two first valve bodies 4 are respectively arranged on the left side and the right side of the filter box 2, when the filter plate 3 needs to be disassembled, overhauled and cleaned, the two first valve bodies 4 are closed, liquid conveying can be cut off, and the filter plate 3 is disassembled; the slag discharging pipe 5 is provided with a second valve body 6, when the filter slag in the slag storage bottle 7 needs to be cleaned, the second valve body 6 is closed, the slag storage bottle 7 can be disassembled, and the first valve body 4 and the second valve body 6 are ball valves; the filter plate 3 is fixedly provided with a pull ring 31, so that the filter plate 3 can be conveniently pulled, and the device can be conveniently used; all welded have flange 8 on 1 both ends of connecting pipe, the end of intaking 11 and the inlet tube 12, pass through bolt fixed connection between two adjacent flanges 8, be convenient for connect fixedly, convenient to detach, sealing performance is good.

The working principle is as follows: when the filter is used, liquid enters the connecting pipe 1 from the water inlet pipe 12, is filtered by the filter plate 3 when passing through the filter box 2, and filtered filter residues fall into the slag discharging pipe 5 and fall into the slag storage bottle 7 from the slag discharging pipe 5;

when the filter plate 3 needs to be disassembled, overhauled and cleaned, the two first valve bodies 4 are closed, so that liquid conveying can be cut off, and the filter plate 3 is disassembled;

when the inside filter residue of sediment bottle 7 is deposited to needs is cleared up, close second valve body 6, alright dismantle sediment bottle 7.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A cavitation prevention device for a feed pump, comprising:

the water supply device comprises a connecting pipe (1), wherein the water outlet end of the connecting pipe (1) is communicated with the water inlet end (11) of a water supply pump, and the water inlet end of the connecting pipe (1) is communicated with a water inlet pipe (12);

the filter box is characterized in that a filter box (2) is fixedly communicated with the connecting pipe (1), a filter plate (3) is installed inside the filter box (2), a lower portion of the filter box (2) is communicated with a slag discharging pipe (5), and a slag storing bottle (7) is communicated with the lower portion of the slag discharging pipe (5).

2. A cavitation prevention apparatus for a feed water pump as set forth in claim 1, wherein: a slot (21) is formed in one side, close to the water inlet end (11), of the interior of the filter box (2), and the filter plate (3) is embedded and inserted into the slot (21).

3. A cavitation prevention apparatus for a feed water pump according to claim 2, characterized in that: the filter box (2) is a square filter box, and the lower part of the filter box (2) is open.

4. A cavitation prevention apparatus for a feed water pump as set forth in claim 1, wherein: and a sealing plate (51) is integrally formed at the top of the slag discharging pipe (5), and the sealing plate (51) is connected with the lower edge of the filter box (2) through a fixing bolt (52).

5. A cavitation prevention apparatus for a feed water pump as set forth in claim 1, wherein: the lower end of the slag discharging pipe (5) is provided with an external thread (53), and the upper end of the slag storage bottle (7) is in threaded connection with the lower end of the slag discharging pipe (5).

6. A cavitation prevention apparatus for a feed water pump according to claim 1, characterized in that: two first valve bodies (4) are installed on the connecting pipe (1), and the two first valve bodies (4) are arranged on the left side and the right side of the filter box (2) respectively.

7. A cavitation prevention apparatus for a feed water pump as set forth in claim 1, wherein: and a second valve body (6) is arranged on the slag discharging pipe (5).

8. A cavitation prevention apparatus for a feed water pump according to claim 1, characterized in that: and a pull ring (31) is fixedly arranged on the filter plate (3).

9. A cavitation prevention apparatus for a feed water pump as set forth in claim 1, wherein: all welded on connecting pipe (1) both ends, the end of intaking (11) and inlet tube (12) have flange (8), adjacent two through bolt fixed connection between flange (8).