Explosion-proof Submersible Sand Discharge Pump

Explosion-proof Submersible Sand Discharge Pump 

Product implementation standards and features

The BQS(BQW) mine explosion-proof submersible sand discharge pump (hereinafter referred to as "electric pump") is MT/t671-2005 "mine explosion-proof submersible electric pump", and the motor explosion-proof type is "ExdI".The electric pump is my company on the basis of full market research that develops by oneself with a traditional dry three-phase asynchronous motor driven absorption type "under" trapping by the mining flameproof submersible pumps, the flame-proof standard design and manufacture.Strict anti-explosion measures are adopted in the motor part, and steel parts are used in the motor shell.The unit can dry the surface shallow water layer of the working face, or work in the water for a long time.The electric pump has the advantages of compact structure, small weight and easy movement, no water diversion, double-sided sealing, durable, safe and reliable, and strong adaptability.

The main purpose and scope of application of the product

It is an advanced and reliable drainage tool for working face, roadway, well bottom water pit, local water pit, coal preparation plant drainage, engineering drainage and other occasions.

Applicable to the coal mine roadway and mining working face, the other the surrounding medium containing methane or coal dust discharge groundwater and in the environment of explosive gas mixture containing suspended pulverized coal, cuttings, coal, sand and gravel, mud solids such as wastewater.

· use environment and working conditions

The electric pump can operate normally continuously under the following conditions:

. The rated power supply frequency is 50HZ, and the rated voltage is 380V, 660V or 1140V (allowable deviation plus or minus 5%).(the voltage of the electric pump must be marked when ordering).

The depth of the electric pump can be no more than 5m in shallow water and submerging water.

. Enter a medium temperature shall not exceed 40 ℃, environment temperature 0 to 40 ℃.

. The PH value of the pumped liquid is 4-10..

The volume ratio of water containing solid impurities is generally no more than 2%.

The diameter of solid particles in water is not more than 50% of the small size of *** * in the cross-flow section of the pump channel.

Dongda Group has 10 series, more than 70 products. Including mines lifting equipment, transport equipment, communication signal equipment, personal-protective equipment, ventilation equipment, mining cleaning equipment, supporting equipment, drilling machines and accessories, mining pump, electrical equipment, lighting equipment ,rock drilling equipment and other products.coal feeder ,air cannon ,gas detector,
Now ,hundreds kinds of products have been exported to more than 60 Countries and regions. Such as USA, Australia, Russia, Canada, Middle East, Africa etc
Dongda Group has succeeded in passing a number of certification systems which are ISO9001, 2008 quality management system certification, CE certification ,Alibaba GIS certification, SGS certification (made in China) . With excellent quality and competitive price , Dongda group is to establish long-term, broader economic and trade cooperation and strategic partnership with a number of large state-owned enterprises and customers, and won the unanimous approval of them.

Structural features and working principle

(1) structural drawing features of products

1, the BQS (BQW) the structure of the upper mine flameproof submersible sand pump for trapping by the flameproof submersible electric pump motor, central for mechanical seal, lower for the pump, motor and pump mechanical seal and coaxial connection.

2. The water pump consists of water wheel, volute, water inlet joint, water outlet, etc.

3. The electric motor of the explosion-proof submersible sand discharge electric pump is three-phase ac explosion-proof squirrel cage asynchronous motor. The nail winding adopts polyester enameled wire, which greatly improves the service life of the motor.

4. The housing of the unit is made of steel and cast iron respectively, with small volume, anti-pressure and anti-collision, safe, reliable and durable.

5. Special sealing structure is adopted to enter the cable. Water cannot enter the inner part of the motor.The seal includes dynamic seal and static seal, and adopts integral mechanical seal with double end face.No. 15 or no. 20 mechanical oil is filled in the cavity formed by the motor shaft extension on the upper cover of the impeller and the bearing support under the housing.However, it is not allowed to be filled up, so there should be some space.

(2) working principle of the product

Electric pump starts, turning on the power supply will produce a rotating magnetic field of the stator rotor rotation, so as to drive the impeller rotation, as a result of the blade centrifugal effect, pajamas, large flow and high pressure water pipe by the volute increase the height of the ideal.

Iii. Installation and debugging

(1) environmental requirements for use

The environment and conditions for inspection before installation shall comply with the provisions of article 1, article 5 of the manual.

(2) unit inspection of electric pumps

1. Check before installation, the unit shall be well assembled, the fastening bolts shall not be loose, the impeller of the rotating water pump shall be flexible and even, and there shall be no lag.

2. The cable shall be inspected without damage, and the electrical device shall meet the requirements and be firmly fixed and reliable.

3. Run on land for one minute before use to check whether the electric pump operates normally and the steering is correct.Any two of the three - phase power can be switched if it is reversed.The electric pump should operate without vibration, noise and other abnormal phenomena.