CN102261513A - Inlet/exhaust valve for sewage containing lots of impurities and gases - Google Patents

Abstract

The invention relates to a sewage intake and exhaust valve, in particular to an intake and exhaust valve for sewage with a lot of impurities and a large volume of gas. Prevent clogging; the vent hole is protected by the guide rod on the floating ball, and will not touch the air bubbles that are easy to crust in the sewage gas, reducing clogging and ensuring long-term operation; at the same time, the floating ball is in the middle position, reducing the The diameter of the overall valve body adopts a circular floating ball, which can increase the contact area with the liquid surface, and can also reduce the length of the valve body. The exhaust valve overcomes the impurity blockage and The defect of small air output due to too small air outlet.

Description

A kind of intake and exhaust valve for sewage with many impurities and large gas volume

technical field

The invention relates to a sewage intake and exhaust valve, in particular to an intake and exhaust valve for sewage with many impurities and large air volume.

Background technique

At present, there are many kinds of exhaust valves, but there are relatively few sewage exhaust valves. Existing sewage composite exhaust valves are commonly used. For example, the sewage exhaust valve is commonly used as shown in Figure 1. The valve body contains levers and floating balls. side, the lever is on the opposite side of the float, and the bonnet is on one side of the bonnet. When the valve body is filled with water, the floating ball falls to the bottom of the valve body under the action of gravity, and a large amount of pressurized gas is quickly discharged from the vent hole. After the air is discharged, the water in the pipe enters the valve from the lower part of the valve body, and the floating ball in the valve body floats up until the movable rod is pushed to the valve port, and the intake and exhaust valves are automatically closed to stop exhaust and not to discharge water. The air dissolved in the water in the pipe enters the valve, and the water level in the valve drops gradually, but the movable rod is held by the gas and cannot automatically drop. When the water surface in the valve body drops below the floating ball, the floating ball will fall by gravity, and the valve port will open to release a large amount of air. At present, the disadvantages of this type of valve are that the structure is complex, there are many stressed parts, the volume is large, and the air outlet is too small, which makes it easy for impurities to block the air outlet.

Contents of the invention

The present invention aims at the deficiencies of existing sewage inlet and exhaust valves, such as complex structure, many stressed parts, bulky size, too small gas outlet, which causes impurities to easily block the gas outlet, etc., and provides a valve that can be used for a , The intake and exhaust valves of sewage with large air volume, so as to overcome the defects of the existing sewage intake and exhaust valves that are blocked by impurities and the air output is small due to the small air outlet.

The technical solution adopted by the present invention to solve the technical problem is: a sewage inlet and exhaust valve, including a valve body, a valve cover, a floating ball, a movable sealing rod, an air outlet, an air outlet and a hanger. The valve cover is fixedly mounted on the upper end of the valve body, the valve cover is provided with the air outlet; the valve cap is fixedly installed on the air outlet, the valve cap is provided with an air outlet, and the air outlet An annular gasket is installed at the lower end, and a movable sealing rod that can move up and down is installed at the air outlet. Vent holes are arranged on the bottom in turn, and the gas in the valve can be discharged from the vent hole through the vent holes; the lower end of the valve cover and the lower end of the top plate are equipped with annular gaskets; the movable sealing rod is hollow tubular, The middle and lower ends are set in the guide rod, and can move up and down in the guide rod; the other end of the guide rod is fixedly installed with a round stainless steel floating ball, and the valve cover is provided with a hanger. When the guide rod moves up and down due to the floating ball, the guide rod can be hung on the hanger.

The working principle of the valve involved in the present invention is: when the valve body is injected with sewage, the moving sealing rod and the guide rod connected with the floating ball are hung on the hanger under the action of gravity, and the gas is quickly discharged through the air outlet. After the water port enters the valve body, the floating ball in the valve body floats up under the action of buoyancy, pushing the guide rod to move upward, and then pushing the moving sealing rod to move upward until the top plate blocks the air outlet, and the exhaust at the beginning of the system operation is over. ;During the operation of the system, a large number of gas bubbles will be generated in the sewage, which will be slowly collected into the valve body. Under the pressure of the gas bubbles, the sewage in the valve body will gradually decrease, the buoyancy will weaken, and the floating ball will drop under the action of gravity. However, the moving sealing rod and the top plate will not drop due to the gas pressure in the valve body. When the floating ball descends to expose the vent holes A and B on the moving sealing rod in turn, the gas will pass through the vent holes A and B from the outlet. The air hole is discharged, the air pressure drops, the sewage continues to enter and then rises, the floating ball rises and then blocks the air outlet, and this cycle is repeated to play the role of exhaust.

The beneficial effects of the valve involved in the present invention are as follows:

1. Enlarging the size of the air hole is conducive to the discharge of a large amount of gas in the sewage and can prevent blockage at the same time.

2. The vent hole is protected by the guide rod on the floating ball, and will not touch the air bubbles that are easy to crust in the sewage gas, reducing blockage and ensuring long-term operation.

3. Since the floating ball is in the middle position, the diameter of the overall valve body is reduced, and the use of a circular floating ball can increase the contact area with the liquid surface and reduce the length of the valve body.

4. There are only three force-bearing parts in the whole design, the valve body, floating ball, valve cover, and others are not subject to too much pressure, which enhances the reliability of operation.

5. Reduce the number of parts, 3 sealing rings and 5 other parts, reducing the number of molds and reducing costs.

Description of drawings

Figure 1: A cross-sectional view of a sewage inlet and exhaust valve commonly used in the prior art.

Figure 2: Schematic diagram of the structure of the present invention.

Figure 2: Schematic diagram of the rising state of the floating ball of the present invention.

Figure 4: Schematic diagram of the exhaust state of the present invention.

Figure 5: a schematic top view of the present invention.

Detailed ways

As shown in FIG. 2 , a sewage inlet and exhaust valve includes a valve body 2 , a valve cover 1 , a floating ball 10 , a moving sealing rod 7 , an air outlet 3 , an air outlet 5 and a hanger 11 . The valve cover 1 is fixedly mounted on the upper end of the valve body 2, and the valve cover 1 is provided with an air outlet 3; The lower end of the air outlet is equipped with an annular sealing gasket 6, and a movable sealing rod 7 that can move up and down is installed at the air outlet, and a top plate 8 is fixedly installed in the middle of the moving sealing rod, and the top plate 8 is fixed on the moving sealing rod. Ventilation holes A and B are arranged in sequence from top to bottom under the plate, and the gas in the valve can be discharged from the air outlet through A and B; the lower end of the valve cover and the lower end of the top plate are equipped with an annular gasket 6; The moving seal rod is hollow tubular, and the middle and lower ends are arranged in the guide rod 9, and can move up and down in the guide rod; the other end of the guide rod is fixedly equipped with a circular stainless steel floating ball 10, and the valve A hanger 11 is arranged on the cover, and when the guide rod moves up and down due to the floating ball, the guide rod can be hung on the hanger.

The water inlet is arranged at the bottom of the valve body, and the bottom of the valve body is also provided with a base that can be fixedly installed with the valve body, and the base and the valve cover 1 are provided with screw holes 12 near the outer edge for connecting with the valve body. The valve body is fixedly connected.

During operation, the annular sealing gasket 6 can ensure the airtightness of the present invention, and the vent holes A and B are protected by the guide rod 9, and will not touch the air bubbles that are easy to crust in the sewage gas, reducing clogging and unobstructed exhaust , no water leakage, and once there is a negative pressure in the pipe, the valve can quickly suck in air to prevent damage to the pipe and ensure safety. the

Claims (2)

1. a sewage air inlet and exhaust valve is characterized in that comprising valve body (2), valve gap (1), ball float (10), hydrodynamic reciprocating sealing bar (7), air outlet (3), air outlet hole (5) and hanger (11); Described valve gap (1) is fixedly mounted on valve body (2) upper end, and valve gap (1) is provided with air outlet (3), is installed with bonnet (4) on air outlet (3), and bonnet is provided with air outlet hole (5); Lower end, described air outlet (3) is equipped with Gask-O-Seal (6), and described air outlet (3) locate to be equipped with hydrodynamic reciprocating sealing bar moving up and down (7); Described hydrodynamic reciprocating sealing bar middle part is installed with (8), is disposed with vent (A) and (B) below hydrodynamic reciprocating sealing bar upper rminal disc from top to bottom, and gas can be by (A) with (B) by described air outlet hole discharge in the valve; Described valve gap lower end and describedly take over a business the lower end Gask-O-Seal (6) all is installed; Described hydrodynamic reciprocating sealing bar is a hollow tubular, and middle lower end is arranged in the guide rod (9), and can be up and down in described guide rod; The other end of described guide rod is installed with circular stainless steel floating ball (10), and described valve gap is provided with hanger (11).

2. according to the sewage air inlet and exhaust valve of claim 1, it is characterized in that, water intake is arranged on the bottom of described valve body, and the bottom of described valve body also is provided with the base that can fixedly mount described valve body, described base and valve gap (1) go out to be provided with screw (12) near outer rim, are used for fixedlying connected with valve body.

Images