JPH0544496Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a method for purifying harmful components emitted from engines such as industrial internal combustion engines and internal combustion engines for energy-efficient district heating, cooling, and hot water generation systems. The present invention relates to a catalytic converter for exhaust gas purification.

[Prior Art] Conventionally, this type of catalytic converter 1 is shown in FIG.
As shown in FIG. 5, the front and rear flanges 25, 26 of the catalyst container 21 containing a plurality of catalyst bodies C are shown in FIG.
, flanges 17, 35 of the inlet and outlet casings.
are tightened with bolts 53 and 56, and the flanges 18 and 37 at the ends of the inlet and outlet casings are tightened with bolts 7 and 8 to the flanges 5 and 6 of the exhaust pipe 3,
A catalytic converter 1 is installed in the middle of an exhaust pipe 3.

The catalyst of the catalyst body C deteriorates after being used for a certain period of time and the reaction rate decreases, so it is necessary to replace it with a new one. To replace the catalyst body, first, the fastening bolts 53 and 56 of the catalyst container 21 are removed, the catalyst container 21 is pulled out, and the catalyst body is replaced.

[Problems that the invention aims to solve] However, even if the fastening bolts of the catalyst container are removed, the flange and gaskets are seize due to the heat during operation, and since they are caught between the exhaust pipes, the catalyst container, inlet and outlet There is no gap between it and the casing. Therefore, there are problems in that it is difficult to remove the catalyst container, and that replacing the catalyst takes a lot of effort and is expensive.

The object of this invention is to provide a catalytic converter for exhaust gas purification that can solve the above-mentioned problems.

[Means for solving the problem] The catalytic converter for exhaust gas purification of this invention has the following features:
An inlet casing and an outlet casing are fastened with bolts at the front and back of a catalyst container containing a catalyst body, and the flanges provided at the ends of the inlet and outlet casings are fastened and connected to the flanges of the exhaust pipe, and the casings are installed in the middle of the exhaust pipe. For those equipped with a catalytic converter,
The invention is characterized in that a plurality of jack plates each having bolt holes are fixed to the inlet and outlet casings, and jack bolts with nuts are inserted into the bolt holes of these jack plates.

[Operation] Then, by turning the nut of the jack bolt with a nut inserted between the jack plates, the gap between the jack plates is expanded, and a gap is created between the catalyst container and the inlet and outlet casings. This allows the catalyst container to be easily pulled out and the catalyst body to be easily replaced.

[Example] An example of the present invention will be described with reference to FIGS. 1 to 3.

For example, regarding the outlet casing 31, as shown in FIG. 2, jack plates 61 having bolt holes 61a are welded to the four corners of the square flange 35. Further, a jack plate 60 having bolt holes 60a is welded to the corner flange 17 of the inlet casing 11 so as to face the jack plate 61. Jack bolts 62 with nuts 63 and 64 are inserted into the bolt holes of the opposing jack plates 60 and 61, respectively.

Therefore, when replacing the catalyst body C in the catalyst container 21, as shown in FIG.
56 and turn the nuts 63 and 64 attached to the jack bolt 62 in opposite directions to widen the gap between the jack plates 60 and 61. In this way, gaps 70 and 71 are created between the catalyst container 21 and the inlet casing 11 and outlet casing 31.

By appropriately dimensioning the gaps 70 and 71, the catalyst container 21 can be pulled out laterally. Then, when the catalyst container 21 is pulled out,
Since the catalyst body C appears on the end face of the catalyst container, the catalyst body C can be inserted and removed and replaced.

In this way, by creating a gap between the flange surfaces, the catalyst container can be easily removed, and the catalyst body C can be replaced much more easily than in the past.

[Effect of the invention] As mentioned above, a jack plate was fixed to the inlet and outlet casings, a jack bolt with a nut was inserted between them, and by turning the nut, a gap was created between the flange surfaces. , the catalyst container can be easily pulled out, and the catalyst body can be easily replaced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is a right side view of Fig. 1, Fig. 3 is an explanatory diagram of the state in which the catalyst container is removed, and Fig. 4 is an illustration of the catalyst container installed in the engine exhaust system. FIG. 5 is a side view of the catalyst container. 1...Catalytic converter, 3...Exhaust pipe, 11...
...Inlet casing, 21 ...Catalyst container, 31
...Outlet casing, 60, 61... Jacket plate, 62... Jacket bolt, 63, 64...
...Natsuto, C...Catalyst.

Claims (1)

[Scope of utility model registration request] An inlet casing and an outlet casing are fastened with bolts at the front and back of a catalyst container containing a catalyst body, and the flanges provided at the ends of the inlet and outlet casings are fastened and connected to the flanges of the exhaust pipe, and the casings are installed in the middle of the exhaust pipe. For those equipped with a catalytic converter,
A catalytic converter for exhaust gas purification, characterized in that a plurality of jack plates each having bolt holes are fixed to the inlet and outlet casings, and jack bolts with nuts are inserted into the bolt holes of these jack plates.