Application: water injection for coal, gas drainage

Function:
1 By injecting water into coal mass, some of the gas can be discharged, thus the gas content of the coal mass can be  effectively reduced.

2 If water injection achieves the desired effet, the dust can be redued by more than 80%, thus improving the working environment and avoiding dust explosion accident.

3 It can dampen the coal and prevent spontaneous combustion of coal.

4 After adopting advance drainage bore hole and working face drainage system, the gas gushing amount and drilling cuttings amount at the drainage borehole increases obviously, thus reducing the risk of outburst greatly. It helps to  release the ground stress and gas pressure effectively and avoids accidents in coal cutting.

5 It has solved the problem of transfinite gas in coal cutting and outburst prevention drilling, and can efectively prevent coal and gas ouburst and explosion.

Structure:
The hole sealing device is composed of high pressure rubber expansion hose, middle tube, sliding seal joint and injection pressure connector.

Techncial Parameter:
Sealing diameter: 65-150mm (can be processed according to customer’s requirements)
Working pressure: 1-6Mpa (can be processed according to customer’s requirements)
Start-up pressure of relief valve: 0. 4-0. 5Mpa
Working flow: water injection 5t-8t/h. Gas drainage volume depends on concentration and pressure
Sealing depth: 0. 5m-3m
Hose expansion coefficient: 60%-100%


Operation Guides and Precautions:

1 Connect the waterway or airpump on the working site to the injection joint of the hole sealing device, and connect the middle tube to the gas drainage piping. Fully insert the hole sealing device into the borehole. Under certain pressure, the hole sealing device hose expands to realize hole sealing, water injection or gas drainage.

2 The gas drainage hole sealing device can be used repeatedly for serveral times. After water injection, remove the pressure, and the hoel sealing device can get back into shape, then you can take the devie out.

3 It is forbidden to insert and take out the device with pressure.

Packing details: woven bag packing or according to customer's requirment

Delivery detail: within 15 days after receive the deposit

Hebei Lianxing Rubber and Plastic Co., Ltd. is located in Hengde Industrial Park, at the junction of Shandong and Hebei. We currently employ 89 people, including 3 managers, 30 engineering technicians (including 3 senior engineers and 16 engineers). Our company covers an area of 51000m2, including 17000 m2 for work shops. Now we have a total assets of 60000000 yuan, including 40000000 yuan in fixed assets. We are an innovative company integrating research and development, production, technology innovation and sales.

We have more than 100 sets of safety production equipment including knitting machine, winding machine, flat vulcanizing machine, rubber and plastic pressure kneading machine, vulcameter without rotator, tensile testing machine, testing equipment, etc.

Main products manufactured by us:
1)Steel Wire Braid Hydraulic Hose Series:
SAE 100 R1AT/DIN EN 853 1SN, SAE 100 R2AT/ DIN EN 853 2SN;
SAE 100 R1A/ DINEN 853 1 ST, SAE100 R2A/ DIN EN 853 2ST
DIN-EN 857 1SC,DIN-EN 857 2SC;
SAE 100 R5, SAE100 R16, SAE 100 R17

2) Steel Wire Spiral Hydraulic Hose Series:
SAE 100R9, SAE 100R12, SAE 100R13, SAE 100R15,DIN EN856 4SP , DIN EN856 4SH

3) Textile Braid Hydraulic Hose: SAE 100 R3, SAE 100 R6

Q1.are you direct factory or trade company?
we are definitely factory,so our price is just factory price and competitive.

uld i get samples?
yes,of course.the rubber hose sample is totally free for you,you just need to pay the freight .for some big size rubber hose which is not convenient for transmitting,we are welcome you could come and visit our factory anytime.

Q3.i want to know something ahout the after sale-service ?
the first time is a chance for both of us,but i could promise you will not regret to choose us as your partner.and if there is damage in the goods, let me know and we will replace it with new one or deduct your cost in your next order .