CN217627832U

CN217627832U - Anti-siphon device of aeration system

Info

Publication number: CN217627832U
Application number: CN202221561866.6U
Authority: CN
Inventors: 唐桂荣; 易湘琢
Original assignee: Hunan Yipin Environmental Technology Co ltd
Current assignee: Hunan Yipin Environmental Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-10-21
Anticipated expiration: 2032-06-22

Abstract

The utility model relates to an aeration systems prevents siphon device technical field, specifically is an aeration systems prevents siphon device, including air-blower, main gate valve, main check valve, supplementary stop valve and aeration tank, interference fit has the pipe on the output of air-blower, on the pipe respectively fixed mounting have main gate valve, main check valve and supplementary stop valve. Compared with the prior art that the installation position of the lifting fan or the height of the pipeline is increased, the check valve is installed at the outlet of the fan, the anti-siphon technology of the aeration system such as the vacuum breaker valve is installed at the height of the system, the anti-siphon technology has the advantages of being free from being restricted by field installation conditions, low in cost, low in maintenance, stable in operation, free from increasing system resistance and the like, the auxiliary valve with the small pipe diameter is added on the pipeline of the prior aeration system, no additional pipeline pipe fitting is added, so that the cost is lower, the maintenance is simple, the anti-siphon technology can be applied to occasions where the installation positions of the fan such as oxygen supply of a biochemical pool, air stirring of a regulating pool or a reaction pool are lower than the liquid level in the pool, and the facilities of the aeration system are effectively protected.

Description

Anti-siphon device of aeration system

Technical Field

The utility model relates to an aeration systems anti-siphon device technical field specifically is an aeration systems anti-siphon device.

Background

The sewage treatment is a process for purifying sewage to meet the requirement of discharging the sewage into a certain water body or reusing the sewage, aeration work needs to be carried out in the sewage treatment process, an anti-siphon device needs to be used in the aeration process, a sewage treatment aeration system is commonly used in occasions of biochemical pond oxygen supply, adjusting pond or reaction pond stirring and the like, and generally comprises a blower, an aerator, an air supply pipeline and a valve, wherein the anti-siphon device of the aeration system is mainly applied to the sewage treatment aeration system and prevents the sewage from being refilled into the aeration pipeline due to siphon action, so that the aerator, an air pipe, the blower and other facilities are damaged.

In engineering practice, technical measures such as lifting a fan mounting position or a pipeline height control point, mounting a check valve at a fan outlet, mounting a vacuum breaker valve at a system height control point and the like are adopted to achieve the anti-siphon effect, the fan mounting position or the pipeline height control point is lifted, and the fan mounting position is lifted to be higher than the liquid level in the pool, so that liquid recharge can be avoided. However, in practice, the liquid level in the pool is generally high, and the fan is usually installed in a ground fan room, so that the condition that the installation position is higher than the liquid level in the pool is difficult to meet or the cost for meeting the condition is high. Raising the height of the pipe elevation point causes the disadvantages of more pipe material consumption, increased pipe resistance and the like, and sometimes causes the phenomenon that the height of the elevation point is not raised enough to resist siphon suction force and cause siphon damage failure; and a check valve is arranged at the outlet of the fan. The siphon phenomenon can be avoided to a certain extent, but after the check valve is closed, pressure still exists from the aerator to the check valve section, so that the resistance is higher when the fan is started, the check valve is easy to malfunction or be not closed tightly after being used for multiple times, and liquid flows back to the cavity of the fan to damage equipment; and a vacuum breaker valve is arranged at a system elevation point. The vacuum breaking valve (siphon breaking valve) is installed above the hump of the siphon pipeline (high point), and the siphon water outlet pipe plays a role of a quick gate. When the main pipeline generates negative pressure and faces the medium backflow risk, the siphon is cut off in time to ensure the safety of the pump valve and the equipment. The first generation pneumatic vacuum breaker valve is eliminated because of the need of special air source and direct current equipment; the second generation electric vacuum breaking valve is powered on and off together with the water pump. Once non-accident power failure occurs, the valve can be automatically and immediately opened to destroy siphonage and cut off water flow, the power source for closing the valve adopts an electromagnet, and once a circuit of the valve breaks down, the valve is completely ineffective, so that the valve is not completely accepted by the market; the third generation mechanical vacuum breaker valve is of a mechanical structure, does not need power consumption, and when the system forms vacuum, the baffle is directly jacked open by atmospheric pressure to add gas into the system, so that vacuum is quickly broken, and negative pressure hazard is prevented. However, the negative pressure plate needs to be frequently checked and maintained, the upper cover is opened, and whether the action of the negative pressure plate is flexible or not is checked, and no resistance phenomenon or deformation exists. When the pressure plate is remounted, the tightness of the contact surface and the flexibility of the guide rod are ensured.

In conclusion, the anti-siphon technology of the existing aeration system has the defects of unsatisfied field installation conditions, more material consumption of pipelines, large system resistance, unstable operation, large maintenance workload and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aeration systems prevents siphon device to solve the problem that proposes in the above-mentioned background art. In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an aeration systems anti-siphon device, includes air-blower, main gate valve, main check valve, supplementary stop valve and aeration tank, interference fit has the pipe on the output of air-blower, fixed mounting has main gate valve, main check valve and supplementary stop valve respectively on the pipe, interference fit has supplementary nozzle stub on the supplementary stop valve, the terminal interference fit of supplementary nozzle stub has supplementary check valve, the bottom fixed mounting of aeration tank has the aerator.

Preferably, the number of the aerators is multiple, and the aerators are distributed in the aeration tank at equal intervals.

Preferably, the number of the conduits is two, one conduit is positioned at the tail end inside the aeration tank, and the other conduit is distributed between the blower and the auxiliary stop valve.

Preferably, the number of the blowers is two, and the two blowers are both arranged on the same horizontal plane.

Preferably, the auxiliary check valve and the main check valve are air check valves, and the auxiliary check valve are distributed on the conduit close to the aeration tank.

Preferably, the output end and the input end of the two blowers are correspondingly in threaded fit, the auxiliary check valve is positioned at one side close to the aeration tank, and the auxiliary stop valve is positioned at one side close to the blowers.

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

compared with the anti-siphon technology of the aeration systems such as the prior art of raising the installation position of the fan or the height control point of a pipeline, installing a check valve at the outlet of the fan, installing a vacuum breaker at the height control point of the system and the like, the anti-siphon technology has the advantages of no restriction of field installation conditions, low cost, low maintenance, stable operation, no increase of system resistance and the like;

the utility model discloses in, increase the auxiliary valve of little pipe diameter on current aeration systems's pipeline, not additionally newly-increased pipeline pipe fitting, so the cost is lower, maintain simply, can be applied to fan mounted position such as biochemical pond oxygen suppliment, equalizing basin or reaction tank air stirring and be less than the occasion of pond liquid level, effectively protect aeration systems facility.

Drawings

Fig. 1 is a schematic view of a front perspective structure of the present invention;

fig. 2 is a schematic diagram of a rear perspective structure of the present invention;

fig. 3 is a schematic top view of the three-dimensional structure of the present invention;

fig. 4 is a schematic diagram of a right-side perspective structure of the present invention.

In the figure: 1. a blower; 2. a main gate valve; 3. a main check valve; 4. an auxiliary stop valve; 5. an auxiliary check valve; 6. an auxiliary short pipe; 7. an aerator; 8. an aeration tank; 9. a conduit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the staff with ordinary skill in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides an aeration systems anti-siphon device, includes air-blower 1, main gate valve 2, main check valve 3, supplementary stop valve 4 and aeration tank 8, and interference fit has pipe 9 on the output of air-blower 1, and fixed mounting has main gate valve 2, main check valve 3 and supplementary stop valve 4 respectively on the pipe 9, and interference fit has supplementary nozzle stub 6 on the supplementary stop valve 4, and the terminal interference fit of supplementary nozzle stub 6 has supplementary check valve 5, and the bottom fixed mounting of aeration tank 8 has aerator 7.

In this embodiment, as shown in fig. 1, 2, 3 and 4, the number of the aerators 7 is plural, and the plural aerators 7 are equidistantly arranged inside the aeration tank 8.

In this embodiment, as shown in fig. 1, 2, 3 and 4, the number of the conduits 9 is two, one conduit 9 ends inside the aeration tank 8, and the other conduit 9 is distributed between the blower 1 and the auxiliary stop valve 4, and the conduits 9 are used for connecting the respective valve parts and the blower 1.

In the present embodiment, as shown in fig. 1, 2, 3, and 4, the number of blowers 1 is two, and both blowers 1 are installed on the same horizontal plane.

In this embodiment, as shown in fig. 1, 2, 3 and 4, the auxiliary check valve 5 and the main check valve 3 are both air check valves, and the auxiliary stop valve 4 and the auxiliary check valve 5 are both disposed on the conduit 9 near the aeration tank 8, so that when the air supply is stopped, the main check valve 3 is automatically closed, and a slight negative pressure is generated due to a sudden drop in the pressure in the conduit, a change in the direction of the air flow, and the like, and thus the auxiliary check valve 5 is automatically opened, and the siphon action is broken by the air suction.

In this embodiment, as shown in fig. 1, 2, 3, and 4, the output end and the input end of two air blowers 1 are in threaded fit, the auxiliary check valve 5 is located at one side close to the aeration tank 8, the auxiliary stop valve 4 is located at one side close to the air blowers 1, and during normal air supply, the air blowers 1 supply air to the aeration tank 8 through the aerator 7, the main gate valve 2, the main check valve 3, and the auxiliary stop valve 4 are opened, and the auxiliary check valve 5 is automatically closed under the action of the air pressure.

The utility model discloses a use method and advantage: when the anti-siphon device of the aeration system is used, the working process is as follows:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, when the device is used, firstly, an external power supply is applied to electric equipment in the device, when the air is normally supplied, the air is supplied to an aeration tank 8 through an aerator 7 by an air blower 1, a main gate valve 2, a main check valve 3 and an auxiliary stop valve 4 are opened, the auxiliary check valve 5 is automatically closed under the action of air pressure, when the air supply is stopped, the main check valve 3 is automatically closed, micro negative pressure is generated due to factors such as sudden pressure drop in a pipeline, air flow direction change and the like, under the action, the auxiliary check valve 5 is automatically opened, siphoning is damaged by air suction, sewage backflow is avoided, the auxiliary stop valve 4 and the auxiliary check valve 5 adopt small specifications and sizes, the auxiliary stop valve 4 is normally opened, the auxiliary stop valve is closed when the auxiliary check valve 5 is overhauled or replaced under the operation state of the aeration system, non-shutdown maintenance is realized, under the condition that the main check valve 3 cannot effectively stop the siphon phenomenon of the aeration system, the device can still realize that the siphoning backflow phenomenon does not occur, the device can be applied to the occasions that the auxiliary pipe diameter of the existing aeration system is not limited by field installation conditions, low cost, low maintenance cost, low-added auxiliary pipe diameter of the auxiliary pipe fittings or the auxiliary pipe installation of the aeration system can be effectively increased, and the auxiliary pipe diameter of the aeration tank can be applied to the aeration tank, and the auxiliary stirring device.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an aeration systems prevents siphon device, includes air-blower (1), main gate valve (2), main check valve (3), supplementary stop valve (4) and aeration tank (8), its characterized in that: interference fit has pipe (9) on the output of air-blower (1), fixed mounting has main gate valve (2), main check valve (3) and auxiliary stop valve (4) respectively on pipe (9), interference fit has supplementary nozzle stub (6) on auxiliary stop valve (4), the terminal interference fit of supplementary nozzle stub (6) has auxiliary check valve (5), the bottom fixed mounting of aeration tank (8) has aerator (7).

2. An aeration system anti-siphon device according to claim 1, characterized in that: the number of the aerators (7) is multiple, and the aerators (7) are distributed in the aeration tank (8) at equal intervals.

3. An aeration system anti-siphon device according to claim 1, characterized in that: the number of the guide pipes (9) is two, the tail end of one guide pipe (9) is positioned in the aeration tank (8), and the other guide pipe (9) is distributed between the blower (1) and the auxiliary stop valve (4).

4. An aeration system anti-siphon device according to claim 1, characterized in that: the number of the air blowers (1) is two, and the two air blowers (1) are all installed on the same horizontal plane.

5. An aeration system anti-siphon device according to claim 1, characterized in that: the auxiliary check valve (5) and the main check valve (3) are air check valves, and the auxiliary stop valve (4) and the auxiliary check valve (5) are both distributed on a guide pipe (9) close to the aeration tank (8).