JPH0735715U - Catalyst exchange device for industrial vehicles - Google Patents

Abstract

(57) [Summary] [Object] To provide a catalyst exchange device in which the catalyst can be easily exchanged. In an industrial vehicle in which exhaust gas of an engine 2 is housed in a catalyst chamber 6a provided in a silencer 6 and purified by a catalyst, the catalyst chamber 6 is provided above the catalyst chamber.
In addition to providing the catalyst supply port 8 for supplying the catalyst into the inside a, the drain port 13 for discharging the catalyst in the catalyst chamber 6a is provided at the bottom of the catalyst chamber 6a.
After exchanging the catalyst in the catalyst chamber 6a, the catalyst replacement is completed simply by supplying a new catalyst from the catalyst supply port 8 to the catalyst chamber 6a, which facilitates the replacement work.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a catalyst exchange device for an industrial vehicle in which the catalyst can be easily exchanged.

[0002]

[Prior art]

 Some conventional industrial vehicles using an engine as a power source are provided with a catalyst device for purifying exhaust gas. As a conventional catalyst device, a closed type is generally adopted in which a silencer c containing a catalyst b is provided in the middle of an exhaust pipe a extending from an engine as shown in FIGS. 1 and 2.

[0003]

[Problems to be solved by the device]

 However, in the above conventional catalyst device, the muffler c must be removed when replacing the catalyst. Therefore, in order to remove the muffler c, the counterweight, radiator, etc. provided in the vicinity thereof must also be removed at the same time. However, there was a problem that it took a lot of time and effort to replace the catalyst. The present invention has been made in order to improve such a problem, and an object thereof is to provide a catalyst exchange device for an industrial vehicle in which the catalyst can be easily exchanged.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is an industrial vehicle in which engine exhaust gas is housed in a catalyst chamber provided in a silencer and purified by a catalyst. A catalyst supply port for supplying the catalyst into the chamber is provided, and a drain port for discharging the catalyst in the catalyst chamber is provided at the bottom of the catalyst chamber.

[0005]

[Action]

 When exchanging the catalyst with the above configuration, first the catalyst in the catalyst chamber is discharged from the drain port, and then a new catalyst is supplied to the catalyst chamber, so that the silencer, counterweight, radiator, etc. can be removed without removing the catalyst. Can be exchanged.

[0006]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. FIG. 3 is a cross-sectional view near the engine compartment of an industrial vehicle, and FIG. 4 is a rear view of the same. In these figures, reference numeral 1 is a vehicle body of an industrial vehicle, and an engine room 3 accommodating an engine 2 and a counterweight 4 are provided at a rear portion thereof.

Inside the engine compartment 3, a radiator 5 and a silencer 6 are installed behind the engine 2, and an exhaust pipe 7 extending from the engine 2 is connected to the silencer 6. In addition, the exhaust gas discharged from the muffler 6 is discharged from the exhaust port 4a opened in the counterweight 4, and the cooling air that has cooled the radiator 5 is discharged from the exhaust port 4b.

On the other hand, a catalyst chamber 6a is provided in the silencer 6, and a catalyst (not shown) for purifying exhaust gas is housed in the catalyst chamber 6a. A cylindrical catalyst supply port 8 is provided above the catalyst chamber 6a, and an upper end of the catalyst supply port 8 is opened on the upper surface of the counterweight 4, and a cap 10 is detachably attached to the opening. While being attached, the lower end of the catalyst supply port 8 is connected to the catalyst chamber 6a in the silencer 6 via the catalyst supply valve 11.

A cylindrical drain port 13 connected to the catalyst chamber 6 a is provided below the muffler 6, and a drain valve 14 is provided in the middle of the drain port 13.

The drain valve 14 is provided close to the muffler 6 in order to eliminate waste of the catalyst, and the bottom of the catalyst chamber 6 a facilitates discharge of the catalyst from the drain port 13 so that the drain port 13 can be easily discharged. It is inclined to the side. Further, the catalyst supply port 8 may be attached to the counterweight 6 side or the vehicle body 1 side, but the catalyst supply port 8 can be used in view of easy assembly and vibration of the silencer 6. It is advisable to connect the silencer 6 with a flexible hose or the like.

To explain the operation, in exchanging the catalyst, first, the drain valve 14 is opened to discharge the catalyst in the catalyst chamber 6a from the drain port 13 to the outside of the vehicle, and when the discharge of the catalyst is completed, The drain valve 14 is closed and the catalyst supply valve 11 is opened. Then, in this state, the cap 10 of the catalyst supply port 8 is removed and a predetermined amount of catalyst is supplied from the catalyst supply port 8 to the catalyst chamber 6a. When the supply of the catalyst is completed, the catalyst supply valve 11 is closed and the cap 10 is fitted into the opening of the catalyst supply port 8 to complete the catalyst replacement work.

[0012]

[Effect of device]

 As described in detail above, the present invention completes catalyst replacement by discharging the catalyst stored in the catalyst chamber of the silencer from the drain port and supplying new catalyst to the catalyst chamber from the catalyst supply port. It is not necessary to attach and remove the silencer together with the counterweight and radiator near the silencer as in the past, and the catalyst can be replaced easily in a short time.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a conventional catalyst exchange device.

FIG. 2 is an explanatory view showing a conventional catalyst exchange device.

FIG. 3 is a cross-sectional view of the vicinity of an engine compartment of an industrial vehicle that employs a catalyst exchange device according to an embodiment of the present invention.

FIG. 4 is a rear view of the vicinity of the engine compartment of an industrial vehicle that employs the catalyst exchange device according to the embodiment of the present invention.

[Explanation of symbols]

 2 engine 6 silencer 6a catalyst chamber 8 catalyst supply port 13 drain port

Claims (1)

[Scope of utility model registration request] 1. An industrial vehicle in which exhaust gas of an engine 2 is housed in a catalyst chamber 6a provided in a silencer 6 and is purified by a catalyst. A catalyst exchange device for an industrial vehicle, which is provided with a catalyst supply port 8 for supplying hydrogen and a drain port 13 for discharging the catalyst in the catalyst chamber 6a at the bottom of the catalyst chamber 6a.