CN204457848U - For de-watering apparatus and the spool driving mechanism of gas drainage system - Google Patents

Abstract

The utility model relates to a water removal device and a valve core driving mechanism used in a gas drainage system. The water removal device includes a water storage tank, and a reversing valve with a negative pressure balance port, an atmospheric balance port and a working gas port is arranged on the water storage tank. During the reciprocating action, the spool of the directional valve has the first working position of blocking the atmospheric balance port and conducting the negative pressure balance port and the working gas port, and the second working position of blocking the negative pressure balance port and conducting the atmospheric balance port and the working gas port. The water storage cylinder is also provided with a spool drive mechanism that drives the spool to switch between the first and second working positions. The spool drive mechanism includes a floating rod that is mounted on the water storage cylinder and is connected to the valve core by moving along the up and down directions. , the floating rod is provided with a buoy inside the water storage cylinder, and the floating rod is provided with a communication channel connecting the working air port and the inner cavity of the water storage cylinder. The utility model provides a water removal device for a gas drainage system capable of automatic drainage and a valve core driving mechanism used in the water removal device.

Description

Water removal device and spool driving mechanism for gas drainage system

technical field

The utility model relates to a water removal device and a valve core driving mechanism used in a gas drainage system.

Background technique

During the mining process of coal mines and metal mines, there is a lot of gas, which is easy to cause underground explosions and is extremely dangerous. Therefore, the gas content during mining must be strictly controlled. Usually, the policy of extraction first and then mining is adopted to ensure that the gas content in the mining process is within a safe range. Inside. At present, our country mainly adopts the method of drilling holes in the mining face of high-gas areas and installing pipelines to carry out negative pressure drainage of gas. During the drainage process, it is necessary to install detection devices in appropriate places for detection, so as to measure the current gas content at any time. , so as to judge whether there is danger. In the process of gas drainage, a large amount of water is often encountered. In order to prevent the water from entering the detection device and corroding the detection device, it is necessary to install a water removal device in the gas drainage pipe.

Contents of the invention

The purpose of this utility model is to provide a water removal device for a gas drainage system that can automatically drain water; the purpose of this utility model is also to provide a valve core driving mechanism used in the water removal device.

In order to solve the above problems, the technical solution of the water removal device used in the gas drainage system in the utility model is as follows:

The water removal device used in the gas drainage system includes a water storage tank with a water inlet and a water discharge port. The reversing valve of the pressure balance port, the atmospheric balance port and the working gas port, the spool of the reversing valve has the first working position of blocking the atmospheric balance port and conducting the negative pressure balance port and the working gas port during the reciprocating action and the blocking negative position. The pressure balance port is connected to the second working position of the atmospheric balance port and the working gas port. The water storage tank is also provided with a spool driving mechanism for driving the spool to switch between the first and second working positions. The spool driving mechanism includes Guide up and down to move the floating rod that is mounted on the water storage cylinder and connected with the valve core. The floating rod is provided with a buoy inside the water storage cylinder. The floating rod is provided with a valve that communicates with the working air port and the water storage cylinder. Cavity communication channel.

The reversing valve is a slide valve, and the valve core moves vertically and is assembled on the valve body of the reversing valve, and the valve core is fixed on the upper end of the floating rod.

The negative pressure balance port is located above the atmospheric balance port.

Limiting springs are arranged between the floating rod and the reversing valve and between the floating rod and the water storage cylinder.

The technical scheme of the spool driving mechanism in the utility model is:

The spool drive mechanism used in the water removal device of the gas drainage system, including the spool used to guide and move in the up and down direction and assembled on the corresponding water storage cylinder to drive the reversing valve when moving up and down in the first and second working positions The floating rod for switching between, the floating rod is provided with a buoy, and the floating rod is provided with a communication channel for connecting the working air port of the reversing valve and the inner cavity of the water storage cylinder.

The beneficial effects of the utility model are: in normal use, the water flows into the water storage tank through the water inlet. At this time, the water level is low, and the buoy can not float up. Communication, the communication channel in the floating rod connects the negative pressure balance port and the inner cavity of the water storage cylinder. Under the action of negative pressure, the water flow will not be discharged through the drain outlet. As the water level in the water storage cylinder rises, the floating cylinder drives the floating rod to move up. The floating rod drives the spool of the reversing valve to move to the second working position. At this time, the air balance port is connected with the working gas port, and the communication channel in the floating rod is connected with the air balance port and the inner cavity of the water storage tank. The inner cavity of the water storage tank is no longer negative. Pressure environment, the water flow can be discharged through the drain port, the water level gradually drops, the buoy drives the floating rod to move down, and the floating rod drives the valve core to move to the first working position again, and so on.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the water removal device used in the gas drainage system in the utility model.

Detailed ways

The embodiment of the water removal device used in the gas drainage system is shown in Figure 1: it includes a water storage tank 8 with a water inlet and a water outlet, the water inlet is provided with a water inlet one-way valve 7, and the water outlet is provided with a drainage one-way valve. The valve 11 is provided with a reversing valve 4 with a negative pressure balance port 1, an atmospheric balance port 2 and a working air port on the water storage cylinder. The reversing valve is a slide valve. The spool on the valve body, when the spool moves up and down, it has the first working position of blocking the atmospheric balance port 2, conducting the negative pressure balance port 1 and the working air port, and blocking the negative pressure balance port 1, leading to the atmospheric balance port 2 and the working air port. The second working position of the working air port and the reversing valve belong to the prior art and its specific structure is no longer described in detail. The water storage cylinder is also provided with a valve core driving mechanism for driving the valve core to move up and down to switch between the first and second working positions. , the upper end of the floating rod 3 is guided and slidably fitted on the upper end cover of the water storage cylinder, and the lower end of the floating rod 3 is guided and slidably assembled on the guide bracket 10 inside the water storage cylinder. The spool is connected to the floating rod by being fixed on the upper end of the floating rod. The floating rod is provided with a communication channel connecting the working air port and the inner cavity of the water storage tank. The floating rod is provided with a buoy 9 inside the water storage tank. The upper end of the floating rod is provided with an everted spring seat, and a limit spring 5 is arranged between the spring seat and the reversing valve and between the spring seat and the water storage cylinder. Item 6 in the figure represents the sealing ring.

When the water level in the water storage tank is low, the height of the buoy is also low. At this time, the reversing valve is in the first working position, the atmospheric balance port is blocked by the valve core, the negative pressure balance port is connected to the working gas port, and the connection in the floating rod The channel connects the negative pressure balance port and the inner cavity of the water storage tank. The inner cavity of the water storage tank is in a negative pressure environment. The water in the water storage tank will not be discharged through the drain outlet. As the water continues to flow into the water storage tank from the water inlet, the water level in the water storage tank will Gradually rise, the buoy drives the floating rod to move up, and the floating rod drives the valve core to move upward to the second working position. At this time, the negative pressure balance cup valve core is blocked, and the atmospheric balance port is connected with the inner cavity of the water storage tank through the working gas port. When the inner cavity of the water storage tank is no longer in a negative pressure environment, the water in the water storage tank can be discharged through the drainage check valve. As the water level in the water storage tank decreases, the buoy and the floating rod move down, and the valve core moves down to the first working position. At this time, the atmospheric balance port is blocked by the valve core, the negative pressure balance port is connected with the working gas port, and the water storage tank enters the negative pressure environment again. The limit spring can give a force to the floating rod to ensure that when the water surface inside the water storage tank reaches the top of the buoy, the buoy will drive the floating rod to move up, which can realize the water is released after storing more water in the water storage tank, and the water level inside the water storage tank is low , the buoy and the floating rod will move down to ensure that the water in the water storage tank is discharged more thoroughly. In other embodiments of the dewatering device: the reversing valve may not be a slide valve. For example, the spool of the reversing valve realizes switching between the first work and the second working position by reciprocating rotation. A transmission mechanism is set to convert the linear motion of the floating rod into a rotational motion capable of driving the valve core to rotate, and the communication channel on the floating rod can communicate with the working air port of the reversing valve through a hose.

The embodiment of the spool drive mechanism is shown in Figure 1: the specific structure of the spool drive mechanism is the same as the spool drive mechanism described in the above embodiments of the water removal device, and will not be described in detail here.

Claims (5)

1. The water removal device for the gas drainage system is characterized in that: it includes a water storage tank with a water inlet and a water outlet, the water inlet is provided with a water inlet one-way valve, and the water outlet is provided with a drainage one-way valve. The water tank is provided with a reversing valve with a negative pressure balance port, an atmospheric balance port and a working air port. The working position and the second working position where the negative pressure balance port is connected to the atmospheric balance port and the working gas port. The water storage tank is also equipped with a valve core driving mechanism for driving the valve core to switch between the first and second working positions. The drive mechanism of the valve core includes a floating rod that is mounted on the water storage cylinder and is connected to the valve core by moving up and down. The floating rod is provided with a buoy inside the water storage cylinder. The communication channel between the working air port and the inner cavity of the water storage cylinder. 2. The water removal device for gas drainage system according to claim 1, characterized in that: the reversing valve is a slide valve, and the valve core is guided to move up and down and assembled to the reversing valve. On the valve body, the valve core is fixed on the upper end of the floating rod. 3. The water removal device for gas drainage system according to claim 2, characterized in that: the negative pressure balance port is located above the atmospheric balance port. 4. The water removal device for gas drainage system according to any one of claims 1 to 3, characterized in that: between the floating rod and the reversing valve and between the floating rod and the water storage cylinder, there are limited bit spring. 5. The spool driving mechanism used for the water removal device of the gas pumping system is characterized in that: it includes a spool that is used to guide and move in the up and down direction and is assembled on the corresponding water storage cylinder to drive the reversing valve when moving up and down. 1. The floating rod for switching between the second working positions. The floating rod is provided with a buoy, and the floating rod is provided with a communication channel for connecting the working air port of the reversing valve and the inner cavity of the water storage cylinder.