I did it by myself. Here's is the code.


    $p= Mage::getModel('catalog/product')->load($prd['product_id']);
    					  
    $attributeSetModel = Mage::getModel("eav/entity_attribute_set");
    $attributeSetModel->load($p->getAttributeSetId());
    $attributeSetName  = $attributeSetModel->getAttributeSetName();
     
    					   
    if($attributeSetName=='Default' && $p->getTypeID()=='simple') {
    
          echo "This is a pure simple products";
    }

Or if you want the find all pure simple products and the configurable product but not the child product of a configurable product then use this code :


    if($p->isConfigurable() || ($attributeSetName=='Default' && $p->getTypeID()=='simple')) {
    
      echo "It consists of both pure simple products and the configurable product but not the child product of a configurable product";
    
    }