Exhaust gas purification device

Abstract

Provided is smooth lifting up an exhaust gas purification device in the case of assembling the exhaust gas purification device in an engine. The exhaust gas purification device is provided with a plurality of filter bodies which purify exhaust gas discharged by the engine, and a purification casing which has each of the filter bodies built-in and is constructed by a plurality of purification cases. The purification casing is constructed by arranging each of the purification cases in an exhaust gas moving direction and connecting the purification cases by thick plate flanges. A suspension body is integrally formed in the thick plate flange.

1 . An exhaust gas purification device comprising:
 a plurality of filter bodies for purifying exhaust gas discharged by an engine; and   a purification casing having each of the filter bodies built-in and being constructed by a plurality of purification cases,   wherein the purification casing is constructed by arranging the purification cases in an exhaust gas moving direction and connecting the purification cases by a thick plate flange, and a suspension body is integrally formed in the thick plate flange.   
     
     
         2 . The exhaust gas purification device according to  claim 1 , wherein the suspension body is arranged in one end side in the exhaust gas moving direction of the purification casing, a suspension bracket is arranged in the other end side in the exhaust gas moving direction of the purification casing, and
 wherein the suspension body and the suspension bracket are spaced in both sides in the exhaust gas moving direction and faced to each other, in such a manner that their opening holes are positioned in a direction intersecting a longitudinal axis of the exhaust gas moving direction of the purification casing.   
     
     
         3 . The exhaust gas purification device according to  claim 2 , wherein an attaching phase of the thick plate can be changed around the longitudinal axis of the exhaust gas moving direction of the purification casing. 
     
     
         4 . The exhaust gas purification device according to  claim 1  further comprising an exhaust gas pressure sensor for detecting exhaust gas pressure within the purification casing, wherein the exhaust gas pressure sensor is connected to the purification casing via an exhaust gas pressure sensor pipe, and
 wherein a rotation stop body is provided in a fastening boss body which exists in one end side of the exhaust gas pressure sensor pipe, and the fastening boss body is fastened by locking the rotation stop body to the purification casing. 
 
     
     
         5 . The exhaust gas purification device according to  claim 4 , wherein each of the purification cases is constructed as a double tube structure by a plurality of inside cases which have each of the filter bodies built-in, and a plurality of outside cases which accommodate the respective inside cases, and
 wherein a pressure boss body is attached to the inside case, the pressure boss body protrudes outward from an opening hole which is formed in the outside case, and the rotation stop body is locked to the opening hole of the outside case in fastening of the fastening boss body of the exhaust gas pressure sensor pipe to the pressure boss body.   
     
     
         6 . The exhaust gas purification device according to  claim 5 , wherein the purification casing has a purification inlet pipe and a purification outlet pipe, and the purification inlet pipe is constructed as a double tube structure. 
     
     
         7 . The exhaust gas purification device according to  claim 6 , wherein the purification outlet pipe passes through the purification casing, and an end portion on a closed side of the purification outlet pipe is constructed as a double wall structure. 
     
     
         8 . The exhaust gas purification device according to  claim 1 , wherein an exhaust gas outlet is open to a lid body which closes an exhaust gas downstream side of the purification casing, and a baffle plate is provided on an inner surface side of the lid body, the baffle plate inhibiting foreign matter from being inserted into an inner portion of the purification casing.