CN203130143U - Automatic water discharging device of gas extraction collecting box - Google Patents

Abstract

The utility model relates to an automatic water discharge device for a gas pumping collection middle box, which is mainly composed of a filter screen, a water tank, a reversing switch, a fixed sleeve, an elastic sliding shaft, a push rod, a float, a one-way valve, a bottom cover and the like. Wherein the P port of the reversing switch has a filter screen, the A port is connected with the external atmosphere, and water or gas enters the water tank through the B port. The reversing switch is connected with the push rod. The lower part of the push rod is connected with the float, the middle of the push rod is connected with an elastic sliding shaft, and the elastic sliding shaft is arranged in the fixed sleeve. There is a one-way valve at the bottom of the water tank, and a detachable bottom cover is installed at the bottom of the water tank. The utility model is simple in structure, safe and reliable, and has strong applicability, and can solve the problem of automatic water discharge in the gas pumping collection center box under the condition of large suction negative pressure. The structure of the elastic sliding shaft and the fixed sleeve can realize high-efficiency water discharge, thereby saving coal mines Reduce labor costs and improve production efficiency.

Description

Automatic water release device for gas pumping and collecting middle box

technical field

The utility model relates to a water discharge device, in particular to an automatic water discharge device for a mine gas pumping collection middle box. the

Background technique

When mining coal underground, it is often necessary to drain gas from high-gas areas to ensure mine safety. 80%~90% of underground gas drainage is borehole drainage. During the drainage process, the accumulated water in the ascending borehole will flow into the drainage collection center box along the borehole. Too much water in the concentration box will not only increase The drainage resistance reduces the effect of negative pressure drainage, and water and gas will enter the drainage system together, and the accumulated water will block the local drainage pipeline. Therefore, it is necessary to discharge water to the gas pumping collection box in time. The traditional method is to use manual methods to release water from the pumping and collecting tanks of each drilling site in the underground, but this method is time-consuming, laborious, and inefficient, and the differences between each drilling site are large, so it cannot be exhaustive. Some of the existing automatic water release devices cannot work safely and reliably under the condition of high negative pressure drainage; The switch of the pipeline is also switched slowly, and cannot realize instantaneous action; some automatic water discharge devices mainly rely on the gravity of water to overcome the negative pressure of extraction to realize water discharge, but they can only realize automatic water discharge in high-level drilling sites. the

Contents of the invention

The technical problem to be solved by the utility model is: aiming at the deficiencies of the prior art, propose a gas pump that works normally under high negative pressure conditions, can adapt to various environments, and is simple in structure, fast and convenient in installation, safe and reliable. Automatic water release device for pumping and collecting middle box. the

In order to achieve the above purpose, the technical solution adopted by the utility model is: an automatic water release device for the gas pumping collection center box, including a filter screen, a water tank, a reversing switch, a fixed sleeve, an elastic sliding shaft, a push rod, a float, a single Directional valve and the bottom cover at the bottom of the device. The reversing switch is connected with the push rod. The lower part of the push rod is connected with the float, the middle of the push rod is connected with an elastic sliding shaft, and the elastic sliding shaft is arranged in the fixed sleeve. the

The P port of the reversing switch has a filter screen, the A port is connected to the external atmosphere, and water or gas enters the water tank through the B port. A spool is arranged inside the reversing switch, and the spool is connected with a return spring, and the reversing spring is fixed inside the reversing switch. the

The elastic sliding shaft is formed by nesting and combining two hollow shafts I and II with different diameters. There is a spring inside the two shafts, one end of the spring is fixed to the shaft I, and the other end is fixed to the shaft II. After the two shafts are sleeved together, they are installed in the shaft sleeve, and the two shafts can only slide in the horizontal direction. A pulley I and a pulley II are respectively installed on the shaft I and the shaft II, and the elastic sliding shaft is in contact with the inner surface of the fixed sleeve through the pulley. The inner surface of the fixing sleeve is composed of a conical surface and a cylindrical surface. the

The beneficial effects of the utility model are as follows: 1. The utility model can work normally under the condition of high extraction negative pressure without air leakage, and is not only suitable for high-level drilling sites, but also suitable for automatic drainage of drilling sites with other conditions; 2. . When the water level rises to a certain height, the reversing switch can be activated instantly to switch the pipeline to realize high-efficiency water discharge; 3. The utility model can effectively filter the slag in the water, and the bottom is provided with a bottom cover, which is convenient for disassembly and removal of slag ; 4. The utility model has the advantages of simple structure, fast and convenient installation, safety and reliability. the

Description of drawings

Fig. 1 is the schematic diagram of the utility model. the

Fig. 2 is a schematic cross-sectional view of the reversing switch of the utility model. the

Fig. 3 is a schematic cross-sectional view of the fixing sleeve of the present invention. the

Fig. 4 is a schematic cross-sectional view of the elastic sliding shaft of the present invention. the

Among them: 1. Filter screen; 2. Water tank; 3. Reversing switch; 3-1. Spool; 3-2. Return spring; 3-3. A port; 3-4. B port; 3-5. P 4. Fixed sleeve; 5. Elastic sliding shaft; 5-1. Pulley Ⅰ; 5-2. Shaft Ⅰ; 5-3. Shaft sleeve; 5-4. Shaft Ⅱ; 5-5. Pulley Ⅱ; 5 -6. Spring; 6. Push rod; 7. Float; 8. One-way valve; 9. Bottom cover. the

Detailed ways

As shown in Figure 1, the automatic water release device for the gas pumping collection center box includes a filter screen 1, a water tank 2, a reversing switch 3, a fixed sleeve 4, an elastic sliding shaft 5, a push rod 6, a float 7, a one-way valve 8 and Be located at the bottom cover 9 of device bottom. Reversing switch 3 is connected with push rod 6. The lower part of the push rod 6 is connected with the float 7, and an elastic sliding shaft 5 is connected in the middle of the push rod 6, and the elastic sliding shaft is arranged in the fixed sleeve 4. the

For the reversing switch shown in Figure 2, the P port 3-5 of the reversing switch 3 has a filter screen 1, the A port 3-3 is connected to the outside atmosphere, and water or gas enters the water tank 2 through the B port 3-4. A spool 3-1 is arranged inside the reversing switch, and the spool 3-1 is connected with a return spring 3-2, and the reversing spring 3-2 is fixed inside the reversing switch 3. the

As shown in Fig. 3, the elastic sliding shaft and the fixed sleeve, the elastic sliding shaft 5 is formed by nesting and combining two hollow shafts I5-2 and II5-4 with different diameters. A spring 5-6 is arranged in the two shafts, and one end of the spring 5-6 is fixed on the shaft I 5-2, and the other end is fixed on the shaft II 5-4. The two axle sleeves are installed in the axle sleeve 5-3 after they are together, and the axle sleeve 5-3 is a hollow shaft with openings at both ends, which is fixed on the push rod 6. After the two shafts are installed on the shaft sleeve, they can only slide in the horizontal direction. A pulley I5-1 and a pulley II5-5 are respectively installed on the shaft I5-2 and the shaft II5-4, and the elastic sliding shaft 5 is in contact with the inner surface of the fixed sleeve 4 through the pulley I5-1 and the pulley II5-5. The inner surface of the fixed sleeve 4 is composed of a conical surface and a cylindrical surface. the

Working process: the P port 3-5 of the reversing switch of the utility model is connected to the filter screen 1 through the pipeline, and then connected to the water outlet at the bottom of the pumping collection box. The road enters the reversing switch 3 and flows into the water tank 2 from port B (P→B). When the water in the water tank gradually increases, the float 7 drives the push rod 6 to move upward under the buoyancy of the water, and the elastic sliding shaft 5 and the fixed sleeve When the contact surface of the barrel 4 changes from a cylindrical surface to a conical surface, the float 7 basically no longer rises as the water level rises. When the water level rises to a certain height, the buoyancy force on the float is large enough, the conical surface in the fixed sleeve 4 squeezes the pulley Ⅰ5-1 and pulley Ⅱ5-5 of the elastic sliding shaft 5, the spring 5-6 shrinks, and the elastic sliding shaft 5 drives the push rod 6 to move upwards suddenly, the switch is switched, P port 3-5 is closed, A port 3-3 and B port 3-4 are connected (A→B), air enters the water tank 2 through A port 3-3, and the water tank 2. The internal and external pressure difference is consistent, and the water inside the water tank automatically flows out from the liquid check valve 8 under the action of gravity. the

When the water in the water tank is reduced to a certain extent, the float 7 drives the valve core 3-1 to move downward under the action of its own gravity and the return spring 3-2 inside the reversing switch 3, and at this time, the A port 3-3 of the reversing switch 3 is closed , P port 3-5 communicates with B port 3-4, water enters into the water tank through P port 4-5, and completes an automatic water discharge process. the

Claims (4)

1. An automatic water discharge device for the gas pumping collection center tank, characterized in that it includes a filter screen (1), a water tank (2), a reversing switch (3), a fixed sleeve (4), an elastic sliding shaft (5), Push rod (6), float (7), one-way valve (8) and bottom cover (9) located at the lower part of the device, reversing switch (3) is connected with push rod (6), and the lower part of push rod (6) is connected with The float (7) is connected, and an elastic sliding shaft (5) is connected in the middle of the push rod (6), and the elastic sliding shaft is arranged in the fixed sleeve (4). 2. The automatic water release device for the gas pumping collection center box according to claim 1, characterized in that: the P port (3-5) of the reversing switch (3) has a filter screen (1), and the A port (3-3) It is connected to the external atmosphere, and water or gas enters the water tank (2) through port B (3-4). There is a spool (3-1) inside the reversing switch, and the spool (3-1) and the return spring (3- 2) Connection, the return spring (3-2) is fixed inside the reversing switch (3). 3. The automatic water discharge device for the gas pumping collection center box according to claim 1, characterized in that: the elastic sliding shaft (5) is embedded by two hollow shafts I (5-2) and shaft II (5-4) with different diameters. Sleeve together and install in the shaft sleeve (5-3), there is a spring (5-6) between the two shafts, there are pulley I (5-1) and pulley II (5-5) at both ends, and the elastic sliding shaft ( 5) Contact the inner surface of the fixed sleeve (4) through the pulley. 4. The automatic water discharge device for the gas pumping and collecting tank according to claim 1, characterized in that: the inner surface of the fixing sleeve (4) is composed of a conical surface and a cylindrical surface. the

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