CN210317789U

CN210317789U - Pressure control negative suction system

Info

Publication number: CN210317789U
Application number: CN201920963571.3U
Authority: CN
Inventors: 濮熹曌; 沙无埃
Original assignee: WUXI JINCHENG PUMP MANUFACTURING CO LTD
Current assignee: WUXI JINCHENG PUMP MANUFACTURING CO LTD
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-14
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a pressure control negative suction system belongs to the water supply technology field. The pressure control negative suction system comprises a water pump, a water inlet of the water pump is communicated with a water pool through a pipeline, a water inlet of the water pump is communicated with a liquid level retaining device, the liquid level retaining device comprises a vacuum pump and a buoyancy valve which are communicated through a pipeline in sequence, and the buoyancy valve is communicated with the water inlet of the water pump. The utility model provides a pair of among pressure control burden suction system, work as when the water pump stop work, liquid level holding device can guarantee fill with liquid in the water pump, is convenient for the restart of water pump.

Description

Pressure control negative suction system

Technical Field

The utility model relates to a water supply technical field, in particular to pressure control burden inhales system.

Background

The water supply system usually adopts the pump to provide power, pumps the water in the pond to pipe-line system, and when the pump stopped work, liquid backward flow in pump and the pipeline, inconvenient normal start-up of pump.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure control burden system of inhaling to when solving current pump stop work, the liquid reflux in pump and the pipeline, the problem of the normal start of inconvenient pump.

For solving the technical problem, the utility model provides a pressure control burden system of inhaling, including the water pump, the water inlet of water pump passes through pipeline and pond intercommunication, the water inlet department intercommunication of water pump has liquid level holding device, liquid level holding device is including the vacuum pump and the buoyancy valve that loop through the pipeline intercommunication, the buoyancy valve with the water inlet intercommunication of water pump.

Optionally, the buoyancy valve comprises a box body with an opening at the top end, a box cover is tightly covered at the opening at the top end of the box body, a first through hole and a second through hole are respectively formed in the box cover and the bottom of the box body, and the box cover and the bottom of the box body are respectively communicated with the vacuum pump and the water pump water inlet through pipelines; the floating block is placed in the box body, the top end of the floating block is fixedly connected with a sealing plug, and the sealing plug is matched with the second through hole in size.

Optionally, the bottom of the buoyancy valve is communicated with a three-way pipe, and a first pipe orifice of the three-way pipe is communicated with the second through hole; the second pipe orifice of the three-way pipe is communicated with the pipeline; and a third pipe orifice of the three-way pipe is communicated with a vacuum meter.

Optionally, the second pipe orifice is further connected with a first valve; and a second valve is connected to the third pipe orifice.

Optionally, a vacuum tank is further communicated between the vacuum pump and the buoyancy valve and used for storing accumulated water.

Optionally, a liquid level sensor is arranged in the vacuum tank, a first electric valve is further arranged between the vacuum tank and the buoyancy valve, and the bottom of the vacuum tank is further communicated with a second electric valve.

Optionally, the installation height of the vacuum pump is not less than 1m away from the buoyancy valve.

The utility model provides a pair of among pressure control negative suction system, liquid level holding device includes the water pump, the water inlet of water pump passes through pipeline and pond intercommunication, the water inlet department intercommunication of water pump has liquid level holding device, liquid level holding device is including the vacuum pump and the buoyancy valve that loop through the pipeline intercommunication, the buoyancy valve with the water inlet intercommunication of water pump. When the water pump stops working for a short time, the liquid level maintaining device can ensure that the water pump is filled with liquid, so that the water pump can be started again conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a pressure control negative suction system provided by the present invention;

FIG. 2 is a schematic view of the liquid level maintenance apparatus;

FIG. 3 is a schematic view of the connection structure of the buoyancy valve and the three-way pipe;

fig. 4 is a schematic view of the parallel operation structure of a plurality of pump sets of the present invention.

Detailed Description

The pressure control negative suction system provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

Example one

The utility model provides a pressure control negative suction system, as shown in figure 1, including water pump 1, the water inlet of water pump 1 passes through

pipeline

2 and 3 intercommunications in pond, the water inlet department intercommunication of water pump 1 has liquid level holding device, liquid level holding device is including vacuum pump 4 and the buoyancy valve 5 that loops through the pipeline intercommunication, buoyancy valve 5 with the water inlet intercommunication of water pump 1, as preferred, the mounting height h distance of vacuum pump 4 buoyancy valve 5 is not less than 1 m.

Specifically, referring to fig. 2, the buoyancy valve 5 includes a box body 50 with an opening at the top end, a box cover 53 is tightly covered at the opening at the top end of the box body 50, and a first through hole 51 and a second through hole 52 are respectively formed on the box cover 53 and the bottom of the box body 50 and are respectively communicated with the vacuum pump 4 and the water inlet of the water pump 1 through pipelines; a floating block 54 is placed in the box body 50, a sealing plug 55 is fixedly connected to the top end of the floating block 54, and the size of the sealing plug 55 is matched with that of the second through hole 52. Referring to fig. 3, the bottom of the buoyancy valve 5 is communicated with a three-way pipe 9, and a first pipe orifice of the three-way pipe 9 is communicated with the second through hole 52; the second pipe orifice of the three-way pipe 9 is communicated with the pipeline 2; and a third pipe orifice of the three-way pipe 9 is communicated with a vacuum meter 8, and the vacuum meter 8 is used for detecting the pressure in the box body 50. The second pipe orifice is also connected with a first valve 71; a second valve 72 is connected to the third pipe orifice; when water exists in the buoyancy valve 5, the second valve 72 can be closed to protect the vacuum gauge 8, and the vacuum gauge 8 is prevented from being damaged due to water inflow. When the level maintenance device is not required to operate, the first valve 71 may be closed.

And a vacuum tank 6 is communicated between the vacuum pump 4 and the buoyancy valve 5 and used for storing accumulated water. A liquid level sensor (not shown in the figure) is arranged in the vacuum tank 6, a first electric valve 61 is further arranged between the vacuum tank 6 and the buoyancy valve 5, and a second electric valve 62 is further communicated with the bottom of the vacuum tank 6. When the liquid level sensor detects that the accumulated water in the vacuum tank 6 reaches a certain amount, the first electric valve 61 is closed, the second electric valve 62 is opened, and the accumulated water in the vacuum tank 6 is discharged.

The utility model provides a pair of during pressure control burden suction system used, vacuum pump 4 continuously works. When the water pump 1 is not filled with water, the vacuum pump 4 works to generate negative pressure in the box body 50, water sequentially passes through the pipeline 2 and the water pump 1 to enter the box body 50 under the action of the negative pressure, the floating block 54 floats upwards along with the rise of the water level in the box body 50, when the water level rises to a certain height, the sealing plug 55 blocks the first through hole 51 under the thrust action of the floating block 54, and at the moment, the gravity of the floating block 54 and the buoyancy borne by the floating block maintain balance. When the water amount in the pipeline 2 is reduced, the liquid level in the box body 50 is lowered, the floating block 54 drives the sealing plug 55 to be separated from the first through hole 51, at the moment, the vacuum pump 4 continues to generate negative pressure in the box body 50, the liquid level in the box body 50 is raised, and the floating block 54 drives the sealing plug 55 to be raised until the first through hole 51 is blocked; reciprocating operation like this for there is water in the water pump 1 all the time, and is convenient the water pump 1 can normally start, work after the short time outage work. In practical use, the present invention can connect multiple sets of pump sets in parallel for use, please refer to fig. 4.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. A pressure control negative suction system comprises a water pump (1), wherein a water inlet of the water pump (1) is communicated with a water pool (3) through a pipeline (2), and is characterized in that a liquid level retaining device is also communicated with the water inlet of the water pump (1),

the liquid level maintaining device comprises a vacuum pump (4) and a buoyancy valve (5) which are communicated in sequence through a pipeline, and the buoyancy valve (5) is communicated with a water inlet of the water pump (1).

2. The pressure control negative suction system as claimed in claim 1, wherein the buoyancy valve (5) comprises a box body (50) with an open top, the open top of the box body (50) is tightly covered with a box cover (53), the box cover (53) and the bottom of the box body (50) are respectively provided with a first through hole (51) and a second through hole (52) and are respectively communicated with the vacuum pump (4) and the water inlet of the water pump (1) through pipelines; a floating block (54) is placed in the box body (50), a sealing plug (55) is fixedly connected to the top end of the floating block (54), and the size of the sealing plug (55) is matched with that of the second through hole (52).

3. A pressure control negative suction system as claimed in claim 2, wherein the bottom of the buoyancy valve (5) is communicated with a tee pipe (9), and a first pipe orifice of the tee pipe (9) is communicated with the second through hole (52); the second pipe orifice of the three-way pipe (9) is communicated with the pipeline (2); and a third pipe orifice of the three-way pipe (9) is communicated with a vacuum meter (8).

4. A pressure controlled negative suction system according to claim 3, wherein a first valve (71) is further connected to the second port; and a second valve (72) is also connected to the third pipe orifice.

5. A pressure control negative suction system according to claim 1, characterized in that a vacuum tank (6) is further communicated between the vacuum pump (4) and the buoyancy valve (5) for storing accumulated water.

6. The pressure control negative suction system as claimed in claim 5, wherein a liquid level sensor is arranged in the vacuum tank (6), a first electric valve (61) is further arranged between the vacuum tank (6) and the buoyancy valve (5), and a second electric valve (62) is further communicated with the bottom of the vacuum tank (6).

7. A pressure controlled suction system according to claim 1, characterized in that the vacuum pump (4) is mounted at a height of not less than 1m from the buoyancy valve (5).