Object of class CI_DB_mysql_result could not be converted to string [SOLVED]

[eluser]Asinox[/eluser]
Hi guys, im trying to count register, but i have the next error:

Code:

A PHP Error was encountered
Severity: 4096
Message: Object of class CI_DB_mysql_result could not be converted to string
Filename: controllers/site.php
Line Number: 41

my code

Code:

function columnasTiposBares(){
             $tipos = $this->modsite->tiposBaresColumna();
             foreach($tipos as $tipo):
             $contando = $tipo->tipo;
             $tip[] =  anchor('site/lugares/'.$tipo->tipo,$tipo->tipo)."->".$this->db->query('SELECT COUNT(tipo) as total from negocios where tipo = "'.$tipo->tipo.'"');
             endforeach;
         return  $this->table->make_columns($tip, 3);
      }

What is wrong guys?

Thanks