I. General introduction

1. Product features

1.1 BQW series explosion proof submersible sewage pump mainly used under coal mine laneway and working face drain,easy explode occasion.

1.2 BQW series pumps are bottom suction type submersible pump, the impeller fitted on the end of motor shaft, no coupling required. The pump can be used in explosion proof electric equipment standard request in GB3836.1.2 explosion condition. we have security standard certificate and explosion proof certificate. Wide flow channel impeller make it suitable for sewage draining of low water level and that contain the larger particals. its has features of simple structure、long life、simple use etc, also no need priming pump as it is one type of submersible pump.

3. Application conditions

3.1. BQW series pump can be operating safty in coal mine which containing methane, coal dust in air. Or in flammability and explosion enviroment

3.2. The pumping liquid should according with following conditions:

3.2.1. The Max. temperature should be less than 40°C

3.2.2. The PH value should be between 5~9.

3.2.3. Max. consistence by volume of solid not exceed 2%

3.3. The best installation is vertical, Max. incline should be not exceed 10O.

3.4. Operation duty: continuous S1.

II. Main technical parameters of BQW pump                 Table I

Submersible explosion proof pump