CN216654412U

CN216654412U - Novel backwater preventing device

Info

Publication number: CN216654412U
Application number: CN202220068402.5U
Authority: CN
Inventors: 朱方俊
Original assignee: Bnp Ozone Technology Co ltd
Current assignee: Bnp Ozone Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-06-03
Anticipated expiration: 2032-01-12

Abstract

The utility model relates to the technical field of gas-liquid mixing systems, in particular to a novel backwater prevention device which comprises a middle connecting pipe and a water collecting barrel and is characterized in that the lower part of the middle connecting pipe extends into the water collecting barrel, the upper end of the middle connecting pipe is connected with a gas inlet pipe, the middle part of the middle connecting pipe is connected with a gas outlet pipe, and the gas inlet pipe, the gas outlet pipe and the middle connecting pipe are all connected with one-way check valves. When the valve is in a negative pressure state, the valve core in the third one-way check valve slides upwards and is in a closed state; when the gas-liquid mixing negative pressure system stops working, the negative pressure in the system becomes positive pressure in the twinkling of an eye, and liquid can flow backwards from the gas outlet and spout, and at this moment, first one-way check valve and the one-way check valve of second all are in the closed condition to prevented that liquid from flowing to air feeder from the intake pipe, ensured the safe in utilization of equipment, this design simple structure, convenient to use, save material can realize batch production.

Description

Novel backwater preventing device

Technical Field

The utility model relates to the technical field of gas-liquid mixing systems, in particular to a novel backwater prevention device.

Background

In a gas-liquid mixing system, fluid with certain pressure is generally ejected at high speed through a gas-liquid mixing cavity by a venturi, a gas-liquid mixing device, a gas-liquid mixing pump and the like, so that large negative pressure is generated in the gas-liquid mixing cavity, and gas (such as ozone, oxygen, air and other various gases) of gas supply equipment is sucked by the negative pressure; after the gas-liquid hybrid system stopped working, the negative pressure was inhaled and is disappeared, converts the malleation into in the twinkling of an eye, will make liquid from going into trachea refluence and get into air feeder end, and the entering of liquid can cause the harm of different degrees to air feeder, leads to air feeder can not normally work. Secondly, the existing backwater prevention device similar to a gas-liquid mixing negative pressure system is complex in structure, difficult in batch production and unsatisfactory in backwater prevention effect, so that a device which is simple in structure and can prevent liquid from flowing backwards needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel backwater prevention device, which can effectively solve the problems in the background technology.

In order to solve the problems, the technical scheme adopted by the utility model is as follows: the utility model provides a novel prevent return water device, includes intermediate junction pipe and water collecting bucket, its characterized in that, the lower part of intermediate junction pipe extends to in the water collecting bucket, the upper end and the intake-tube connection of intermediate junction pipe, the middle part and the outlet duct of intermediate junction pipe are connected, all be connected with one-way check valve on intake-tube, outlet duct and the intermediate junction pipe.

Preferably, one-way check valve includes first one-way check valve, one-way check valve of second and the one-way check valve of third, first one-way check valve is connected on the intake pipe, the one-way check valve of second is connected on the outlet duct, the one-way check valve of third is connected in the lower extreme of middle connecting pipe.

Preferably, the one-way check valve comprises a valve body, a valve cavity and a valve core, wherein the valve core is arranged in the valve cavity, and the longitudinal section of the valve core is U-shaped.

Preferably, the first one-way check valve is conducted and reversely closed in the direction of the air flow towards the intermediate connecting pipe, the second one-way check valve is conducted and reversely closed in the direction of the air flow towards the outlet, and the third one-way check valve is closed and reversely conducted in the upward direction of the fluid.

Preferably, the air inlet pipe is connected with the middle connecting pipe in an inverted U shape.

Preferably, the air outlet pipe is connected with the middle connecting pipe through a three-way connecting pipe.

Preferably, the middle connecting pipe is fixed with the water collecting barrel through a flange plate, and the flange plate is sleeved with the water collecting barrel.

Preferably, the upper part of the water collecting barrel is provided with a water outlet.

Compared with the prior art, the utility model provides a novel backwater prevention device, which has the following beneficial effects:

1. the lower end parts of the air inlet pipe, the air outlet pipe and the middle connecting pipe are respectively provided with a one-way check valve, when the gas-liquid mixed negative pressure system works, negative pressure is generated in the system, gas enters the first one-way check valve from the air inlet and is discharged to the second one-way check valve in the air outlet pipe through the three-way connecting pipe, and a valve core in the third one-way check valve slides upwards and is in a closed state when in a negative pressure state; when the gas-liquid mixing negative pressure system stops working, the negative pressure in the system is instantly changed into positive pressure, liquid can flow backwards and be sprayed out from the gas outlet, at the moment, the first one-way check valve and the second one-way check valve are both in a closed state, at the moment, if part of liquid breaks through the second one-way check valve and enters the three-way connecting pipe, the liquid is collected into the water collecting barrel through the middle connecting pipe, at the moment, the third one-way check valve is in an open state, when the water level reaches the position of the water outlet, the liquid is discharged from the water outlet, so that the liquid is prevented from flowing out of the gas inlet pipe to the gas supply equipment, and the use safety of the equipment is guaranteed;

2. the utility model has simple structure, convenient use, material saving and batch production realization.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the one-way check valve structure of the present invention;

FIG. 3 is a cross-sectional view of the structure of the present invention;

FIG. 4 is a reference view of the present invention in a negative pressure condition;

fig. 5 is a reference diagram of the present invention in a positive pressure state.

Wherein: 1. middle connecting pipe, 2, water collecting bucket, 3, intake pipe, 4, outlet duct, 5, one-way check valve, 5a, valve body, 5b, valve chamber, 5c, case, 51, first one-way check valve, 52, second one-way check valve, 53, third one-way check valve, 6, tee junction pipe, 7, ring flange, 8, outlet.

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.

Referring to fig. 1-5, the utility model provides a novel backwater prevention device, which comprises a middle connecting pipe 1 and a water collection barrel 2, and is characterized in that the lower part of the middle connecting pipe 1 extends into the water collection barrel 2, the upper end of the middle connecting pipe 1 is connected with an air inlet pipe 3, the middle part of the middle connecting pipe 1 is connected with an air outlet pipe 4, and the air inlet pipe 3, the air outlet pipe 4 and the middle connecting pipe 1 are all connected with a one-way check valve 5.

Preferably, the one-way check valve 5 includes a first one-way check valve 51, a second one-way check valve 52, and a third one-way check valve 53, the first one-way check valve 51 is connected to the intake pipe 3, the second one-way check valve 52 is connected to the outlet pipe 4, and the third one-way check valve 53 is connected to the lower end of the middle connection pipe 1.

The third one-way check valve 53 is disposed in an inverted state.

Preferably, the one-way check valve 5 comprises a valve body 5a, a valve cavity 5b and a valve core 5c, wherein the valve core 5c is arranged in the valve cavity 5b, and the longitudinal section of the valve core 5c is U-shaped.

Preferably, the first one-way check valve 51 is opened and closed in the reverse direction in the direction of the air flow toward the intermediate connection pipe 1, the second one-way check valve 52 is opened and closed in the reverse direction in the direction of the air flow toward the outlet, and the third one-way check valve 53 is closed and opened in the reverse direction in the upward direction of the fluid.

When the valve is opened, the one-way check valves 5 are all in an open state, and air flow can pass through.

Preferably, the air inlet pipe 3 is connected with the middle connecting pipe 1 in an inverted U shape.

Preferably, the air outlet pipe 4 is connected with the middle connecting pipe 1 through a three-way connecting pipe 6.

Preferably, the middle connecting pipe 1 is fixed with the water collecting barrel 2 through a flange 7, and the flange 7 is sleeved with the water collecting barrel 2.

Preferably, the upper part of the water collecting barrel 2 is provided with a water outlet 8.

As a specific embodiment of the present invention:

the air inlet pipe is externally connected with air supply equipment, when the air-liquid mixing negative pressure system works, negative pressure is generated in the system, air enters the water return prevention device from the air inlet, flows through the first one-way check valve 51 and enters the second one-way check valve 52 in the air outlet pipe 4 through the three-way connecting pipe 6, at the moment, the valve cores 5c in the first one-way check valve 51 and the second one-way check valve 52 slide upwards under the pushing of air flow, so that the first one-way check valve 51 and the second one-way check valve 52 are in an open state, and the air can smoothly pass through; finally the gas is discharged via the second one-way check valve 52 to the gas outlet; the water collecting tub 2 is filled with a certain volume of liquid, and the liquid pushes the valve core 5c in the third one-way check valve 53 to slide upward in a negative pressure state, so that the third one-way check valve 53 is in a closed state.

When the gas-liquid mixing negative pressure system stops working, the negative pressure is sucked and disappears, the negative pressure in the system is instantly changed into positive pressure spraying, liquid can flow back from the gas outlet, at the moment, the first one-way check valve 51 and the second one-way check valve 52 are both in a closed state, so that the liquid backflow is prevented, the liquid is prevented from entering the gas inlet pipe 3 due to the positive pressure spraying, the use safety of the gas supply equipment is ensured, the third one-way check valve 53 is in an open state at the moment, if part of the liquid breaks through the second one-way check valve 52 and enters the three-way connecting pipe 6, the liquid flows into the water collecting barrel 2 through the middle connecting pipe 1 to the third one-way check valve 53, when the water level in the water collecting barrel 2 reaches the position of the water outlet 8, the liquid is discharged from the water outlet 8, and the effect of preventing the backwater is realized.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a novel prevent return water device, includes intermediate junction pipe (1) and collecting bucket (2), its characterized in that, the lower part of intermediate junction pipe (1) extends to in the collecting bucket (2), the upper end and the intake pipe (3) of intermediate junction pipe (1) are connected, the middle part and the outlet duct (4) of intermediate junction pipe (1) are connected, all be connected with one-way check valve (5) on intake pipe (3), outlet duct (4) and intermediate junction pipe (1).

2. A novel water return prevention device according to claim 1, characterized in that the one-way check valve (5) comprises a first one-way check valve (51), a second one-way check valve (52) and a third one-way check valve (53), the first one-way check valve (51) is connected to the air inlet pipe (3), the second one-way check valve (52) is connected to the air outlet pipe (4), and the third one-way check valve (53) is connected to the lower end of the intermediate connection pipe (1).

3. A novel backwater prevention device according to claim 1 or 2, wherein the one-way check valve (5) comprises a valve body (5 a), a valve cavity (5 b) and a valve core (5 c), the valve core (5 c) is arranged in the valve cavity (5 b), and the longitudinal section of the valve core (5 c) is U-shaped.

4. A new type of water return prevention device according to claim 2, characterized in that the first one-way check valve (51) is turned on and turned off in the direction of the air flow towards the intermediate connection pipe (1), the second one-way check valve (52) is turned on and turned off in the direction of the air flow towards the outlet, and the third one-way check valve (53) is turned off and turned on in the direction of the fluid flow upwards.

5. A novel backwater prevention device as claimed in claim 1, characterized in that the air inlet pipe (3) is connected with the intermediate connection pipe (1) in an inverted U shape.

6. A novel backwater prevention device according to claim 1, characterized in that the gas outlet pipe (4) is connected with the intermediate connection pipe (1) through a three-way connection pipe (6).

7. A novel backwater prevention device according to claim 1, characterized in that the intermediate connection pipe (1) is fixed with the water collection barrel (2) through a flange (7), and the flange (7) is sleeved with the water collection barrel (2).

8. A novel water return prevention device according to claim 1, characterized in that the upper part of the water collection barrel (2) is provided with a water outlet (8).