CN204961984U - Multi -functional air controlling means - Google Patents

Abstract

The utility model provides a multifunctional air control device, which comprises a body part, a storage cavity arranged inside the body part, and a discharge port and an inlet which are arranged at the upper and lower ends of the body part and communicate with the storage cavity. It includes at least three floats arranged in the housing cavity of the main body and arranged in the vertical direction. Except for the float near the inlet, the other floats are all provided with aerodynamic holes with a diameter smaller than the discharge port. The top-to-bottom floats The aerodynamic holes of the float are successively decreasing, which not only can realize the combined multi-functional exhaust action, but also can gradually reduce the exhaust speed, play a buffer role, and improve the strength of the float.

Description

A multifunctional air control device

technical field

The utility model relates to the field of valves, in particular to a multifunctional air control device.

Background technique

Exhaust valves are used in long-distance water pipelines, municipal water supply networks, pump stations, fire protection, etc. Because there is usually a certain amount of air dissolved in water, and the solubility of air decreases with the increase of temperature, so that the gas gradually separates from the water during the water circulation, and gradually gathers together to form large bubbles or even air columns. Because of the replenishment of water, gas is often generated. When there is gas overflow in the system, the gas will go up along the pipeline and finally gather at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system, when the gas enters the exhaust valve cavity, it gathers at the upper part of the exhaust valve , as the gas in the valve increases, the pressure rises. When the gas pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop, and the buoy will drop with the water level, and the exhaust port will be opened; after the gas is exhausted, the water level will rise, and the buoy will also follow. After rising, close the exhaust port. In the same way, when negative pressure is generated in the system, the water level in the valve chamber drops, and the exhaust port opens. Since the external atmospheric pressure is higher than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure.

However, the floats in the prior art are mainly single-float hollow ball structures, and it is difficult for a single float to achieve complex movements. When subjected to water pressure, it is easily damaged and flattened.

In view of this, it is necessary to design a multifunctional air control device to solve the above problems.

Utility model content

The technical problem to be solved by the utility model is to provide an air control device capable of buffering and protecting the float and realizing multiple functions.

In order to achieve the above purpose, the utility model provides the following technical solutions: a multi-functional air control device, including a body part, a storage chamber arranged inside the body part, and a discharge valve arranged at the upper and lower ends of the body part and communicating with the storage chamber The air control device also includes at least three floats arranged in the housing cavity of the main body and arranged in the vertical direction. Except for the float near the inlet, the other floats are equipped with aerodynamic force with a hole diameter smaller than that of the discharge port. Holes, the aerodynamic holes of the floats arranged from top to bottom are in descending order.

Further, the floats are all solid cylinders with the same diameter.

Further, the height of the buoy close to the inlet is greater than that of other buoys.

Further, the float near the inlet is provided with a dovetail groove recessed from the upper surface and a sealing block placed inside the dovetail groove, and the dovetail groove is arranged directly below the aerodynamic hole of the adjacent float.

Further, the float near the inlet is also provided with a pressure plate installed on the upper surface and covering the dovetail groove; the float adjacent to the float near the inlet is provided with a sealing cylinder inserted into the aerodynamic hole from bottom to top, and the seal The cylinder is provided with a sealing head located outside the aerodynamic hole, a connecting portion extending vertically along the sealing head and inserted into the aerodynamic hole, and a connecting hole passing through the sealing head and the connecting portion and communicating with the aerodynamic hole; The pressing plate is provided with a receiving hole for accommodating the sealing head.

Compared with the prior art, the utility model has at least the following advantages: not only can realize the combined multifunctional exhaust action, but also can gradually reduce the exhaust speed, play a buffer role, and improve the strength of the float.

Description of drawings

Fig. 1 is a schematic structural view of the air control device of the present invention.

Fig. 2 is a partially enlarged view of part A of the air control device shown in Fig. 1 .

Fig. 3 is a partial sectional view of the air control device of the present invention.

detailed description

The structure and content of the utility model of the air control device of the utility model are described below in conjunction with FIGS. 1 and 2 .

A multi-functional air control device, comprising a body part 1, a storage cavity 2 arranged inside the body part 1, a discharge port 3 and an inlet 4 arranged at the upper and lower ends of the body part 1 and communicating with the storage cavity 2, and a There are at least three floats 5 arranged vertically in the housing cavity 2 of the part 1.

The main body 1 includes a cylindrical main body and flanges located at the upper and lower ends of the main body. The main body is fixed between two flanges through several guide rails and bolts. The discharge port 3 and the inlet port 4 are respectively arranged on two flanges.

The utility model is preferably provided with three floats 5, which are respectively an upper float 6, a middle float 7 and a lower float 8. The floats 5 are all solid cylinders with the same diameter. The height of the float close to the inlet is greater than that of other floats. That is, the height of the lower float 8 is greater than the height of the upper float 6 and the middle float 7, so that the weight of the lower float 8 is larger than the weight of the upper float 6 and the middle float 7.

Except for the float near the inlet (ie the lower float 8 ), other floats (ie, the upper float 6 and the middle float 7 ) are provided with an aerodynamic hole 9 with a diameter smaller than that of the discharge port 3 . The aerodynamic holes 9 of the buoys 5 arranged from top to bottom are descending successively. That is, the aperture of the aerodynamic hole of the upper float 6 is larger than the aperture of the aerodynamic hole of the middle float.

The float near the inlet (ie, the lower float 8 ) is provided with a dovetail groove 10 recessed from the upper surface, a sealing block 11 placed inside the dovetail groove 10 , and a pressure plate 12 installed on the upper surface and covering the dovetail groove 10 . The dovetail groove 10 is arranged directly below the aerodynamic hole 9 of the adjacent float (ie, the middle float 7 ).

The float (ie the middle float 7 ) adjacent to the float near the inlet (ie the lower float 8 ) is provided with a sealing cylinder 13 inserted into the aerodynamic hole 9 from bottom to top. The sealing cylinder 13 is provided with a sealing head 14 located outside the aerodynamic hole 9 , a connecting portion 15 extending vertically along the sealing head 14 and inserted into the aerodynamic hole 9 , and penetrating through the sealing head 14 and the connecting portion 15 And the connection hole 16 communicating with the aerodynamic hole 9 . The pressing plate 12 is provided with a receiving hole 17 for receiving the sealing head 14 . When the air control device is closed, the three floats are closely fitted at the top of the body part 1 and seal the discharge port 3. The pressure plate 12, the sealing block 11 and the sealing cylinder 13 realize the connection between the middle float 7 and the lower float 8. between the seals. The sealing between the upper float 6 and the middle float 7 can also be realized through a dovetail groove and a sealing block.

The working principle of the air control device of the present utility model is as follows: 1. When exhaust is required, a large amount of gas enters from the inlet 4 of the main body 1, and the upper, middle and lower floats are lowered by gravity, and the discharge port 3 is opened for normal exhaust; 2. With the rise of the exhaust air pressure, the air force received by the upper float 6 is greater than its own gravity, the upper float 6 is closed, and the aerodynamic hole 9 of the upper float 6 has a smaller diameter, thereby reducing the exhaust speed and acting as a buffer Function; 3. After the liquid enters the body part 1, the upper, middle and lower floats float up in sequence and close the discharge port; 4. When a small amount of gas accumulates, the air enters the body part 1, and the buoyancy of the lower float 8 decreases. Under the action, the aerodynamic hole exhausts a small amount of air.

In summary, the above are only preferred embodiments of the present invention, and should not limit the scope of the present invention. That is to say, all simple equivalent changes and modifications made according to the claims of the utility model and the content of the description should still fall within the scope covered by the utility model patent.

Claims (5)

1. A multi-functional air control device, comprising a main body, a storage cavity arranged inside the main body, and a discharge port and an inlet arranged at the upper and lower ends of the main body and communicating with the storage cavity, characterized in that: the air control The device also includes at least three floats arranged in the housing cavity of the main body and arranged in the vertical direction. Except for the float near the inlet, the other floats are all provided with aerodynamic holes with a diameter smaller than the discharge port. The top to bottom The aerodynamic holes of the floats are arranged in descending order. 2. The air control device according to claim 1, wherein the floats are all solid cylinders with the same diameter. 3. The air control device according to claim 2, wherein the height of the float near the inlet is greater than that of other floats. 4. The air control device according to claim 1, characterized in that: the float near the inlet is provided with a dovetail groove recessed from the upper surface and a sealing block placed inside the dovetail groove, and the dovetail groove is set Just below the aerodynamic hole of the adjacent float. 5. The air control device according to claim 4, characterized in that: the float near the inlet is also provided with a pressure plate installed on the upper surface and covers the dovetail groove; the float adjacent to the float near the inlet is provided with a bottom A sealing cylinder inserted upward into the aerodynamic hole, the sealing cylinder is provided with a sealing head located outside the aerodynamic hole, a connecting portion extending vertically along the sealing head and inserted into the aerodynamic hole, and a penetrating sealing head The connection hole communicates with the connection part and the aerodynamic hole; the pressure plate is provided with a receiving hole for accommodating the sealing head.