CN2141862Y

CN2141862Y - Buoyance type automatic negative pressure drainage device

Info

Publication number: CN2141862Y
Application number: CN 92220445
Authority: CN
Inventors: 覃乐
Original assignee: FENGCHUN COAL MINE SONGZAO MINERAL BUREAU
Current assignee: FENGCHUN COAL MINE SONGZAO MINERAL BUREAU
Priority date: 1992-09-29
Filing date: 1992-09-29
Publication date: 1993-09-08
Anticipated expiration: 2002-09-29

Abstract

The utility model relates to a buoyancy type automatic negative pressure drainage device, which is a device for draining the ponded water of a pipeline in the processes of pumping and discharging the gas. The utility model comprises a water collecting tank 1, a water input valve, a water drainage valve 17, a guide rod 6 providing with a floating block 3 and a serving tray 7 and a ventilation valve cover 14 for controlling to open or close a ventilation pipe 13. The utility model is characterized in that the floating 3 comprises a large floating block sheathed on the guide rod and a small floating block fixed under the large floating block of the guide rod, and the water input valve and the water drainage valve 17 are all one-way valves. The drainage device controls the time of opening and closing the drainage device by using the buoyancy of the large floating block and the time-delay action of the small floating block. The utility model has the advantages of simple structure, high safety, convenient installation, etc.

Description

Buoyance type automatic negative pressure drainage device

The utility model relates to a kind of device--automatic tailrace of buoyancy type negative pressure that solves and handle the pipeline ponding in the gas extraction process.

The technical development that discharges water automatically of present gas discharge in mine negative pressure is slower, and generally the method by its control waterdrainage amount is divided into two classes; A kind of is the automatic tailrace that utilizes its waterdrainage amount of negative pressure control itself, because its performance is extremely unstable, it is former thereby do not promote the use of that Applicable scope is very little etc., another kind is the automatic tailrace of magnetic type negative pressure, it is by dust-collecting bucket, cursory, pallet, vent valve, inlet valve, discharging valve, magnet, compositions such as negative-pressure balancing pipe, it be utilize cursory float by pallet jack-up vent valve discharge water, the magnet adhesive of magnet on the pallet and vent valve, keep the vent valve normal open, pallet is blocked and is closed the negative-pressure balancing pipe simultaneously, discharge water when a certain amount of, the cursory drive pallet that sinks gradually sinks, vent valve is closed, the negative-pressure balancing pipe is opened, finish the whole action that discharges water automatically, its deficiency is: 1, because the iron filings that pipeline is produced under the phreatic corrosion in colliery, scale crusts etc. are adsorbed on the magnet of pallet, pallet rises less than assigned position, the negative-pressure balancing pipe can not be closed, the tailrace unstable properties, malfunctioning phenomenon is many, and the bad connection between magnet, and magnetic force reduces, the tailrace misoperation is serious, and the effect that discharges water is relatively poor; 2, owing to require inlet valve to be connected with extraction pipeline respectively when installing with the negative-pressure balancing pipe, thus its on-the-spot install complicated, pipe fitting expense height that need usefulness.

The purpose of this utility model designs a kind of simple in structure exactly, and is easy for installation, and usability is stable, the automatic tailrace of buoyancy type negative pressure that discharges water effective.

The purpose of this utility model realizes by following structure: the automatic tailrace of buoyancy type negative pressure, it includes header tank and the inlet valve on header tank, discharging valve, in header tank, have by the band floating block of guide pipe guide securement, the guide rod of pallet, the ventilation valve gap of control breathing pipe switch is arranged at guide rod top, its major character is: floating block is made up of the little floating block that is enclosed within the big floating block on the guide rod and be fixed on the guide rod, and inlet valve can be selected one-way valve for use; When using the utility model, when when catchmenting process, big floating block rises because of water level increases slowly, little floating block on the guide rod equates not rise with the gravity of self because of its buoyancy, when big floating block rose to the tray position of guide rod, with guide rod jack-up, guide rod drove the rise valve gap of will ventilating of little floating block and opens by pallet, this moment, inlet valve was closed, and the disappear one-way valve that discharges water of negative pressure is opened automatically and discharged water in the header tank; When big floating block sinks to little floating block position with water level, drive guide rod by little floating block and break away from the ventilation valve gap and close vent valve,, reach the purpose that discharges water automatically and so forth along with the header tank of emitting of water recovers negative pressure condition gradually.

The utility model compared with prior art has following advantage:

1, stable performance, action are accurately, and be reliable, can not produce misoperation;

2, simple in structure, convenient for installation and maintenance;

3, negative pressure is applied widely, can use the pipeline in any negative pressure condition;

4, principle is simple, advanced technology, and buoyancy and buoyancy easily mate, and therefore, manufacturing requires lower, easily manufacturing;

5, discharge water effectively, waterdrainage amount is big.

Description of drawings of the present utility model is as follows:

Fig. 1,2 is the structural representation of the different user modes of the utility model;

Fig. 3 is an installation diagram of the present utility model;

Among the figure: 1, header tank; 2, loam cake, 3, the foam floating block, 4, clamping plate, 5, guide pipe; 6, guide rod, 7, pallet, 8, thimble, 9, the negative-pressure balancing micropore; 10, intake pipe, 11, inlet valve seat, 12, inlet valve cap, 13, breathing pipe; 14, ventilation valve gap, 15, safety cover, 16, offlet, 17, discharging valve; 18, safety cover, 19, guide pipe, 20, tailrace; 21, releasing pipe, 22, gate valve, 23, connecting tube.

The utility model will be further described below in conjunction with drawings and Examples:

As shown in Figure 1: the utility model includes header tank 1 and the inlet valve on header tank, discharging valve 17, in header tank, have by the band floating block 3 of guide pipe 19 guide securement, the guide rod 6 of pallet 7, the ventilation valve gap 14 of thimble 8 energy jack-up control breathing pipes 13 switches on guide rod top, wherein floating block 3 is made up of the little floating block that is enclosed within the big floating block on the guide rod and be fixed on the guide rod, and inlet valve is an one-way valve; For being discharged water automatically, tailrace can continue a break time, little floating block is equated with their buoyancy sums in water substantially with the gravity of guide rod, pallet, so that when discharging water, the water level of header tank and big floating block descend gradually, after breaking away from pallet, little floating block, guide rod and pallet do not descend immediately, make the thimble jack-up ventilation valve gap that can begin eventually, tailrace discharges water always automatically, drive when big floating block drops to little floating block position that little floating block, guide rod, pallet sink, the ventilation valve gap is closed, tailrace just stops to discharge water automatically; Inlet valve can be made up of inlet valve seat 11 and inlet valve cap 12, and is good in order to make the tailrace using effect, can preset negative-pressure balancing micropore 9 on inlet valve cap.

Claims

1, the automatic tailrace of a kind of buoyancy type negative pressure, include header tank 1 and the inlet valve on header tank, discharging valve 17, in header tank, have by the band floating block 3 of guide pipe 19 guide securement, the guide rod 6 of pallet 7, the ventilation valve gap 14 of control breathing pipe 13 switches is arranged at guide rod top, it is characterized in that: floating block 3 is made up of with the little floating block that is fixed on big floating block below on the guide rod the big floating block that is enclosed within on the guide rod; Inlet valve and discharging valve are one-way valve.

2, the automatic tailrace of buoyancy type negative pressure as claimed in claim 1 is characterized in that: the gravity summation of little floating block and guide rod, pallet equates substantially with the buoyancy of little floating block in water.

3, the automatic tailrace of buoyancy type negative pressure as claimed in claim 1, it is characterized in that: inlet valve is made up of inlet valve seat 11 and inlet valve cap 12.

4, as claim 1, the automatic tailrace of 3 described buoyancy type negative pressure, it is characterized in that: negative-pressure balancing micropore 9 is arranged on the inlet valve cap.