JPH052725U - Drive device for adsorbent rotor for NOx-containing gas purification device - Google Patents

Abstract

(57) [Summary] A drive device for an adsorbent rotor for a NOx-containing gas purification device. [PROBLEMS] To provide a driving device suitable for driving a large-sized rotor that is greatly deformed by heat. [Structure] The drive roller 29 is guided by guide means so that the drive roller 29 approaches and separates from the outer surface of the adsorbent rotor 11. The drive roller 29 is biased by a biasing means so that the drive roller 29 is elastically pressed against the outer surface of the adsorbent rotor 11. The driving force is transmitted to the driving roller 29 by a transmission means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drive device for an adsorbent rotor used in a device for purifying gas containing a relatively low concentration of NOx (nitrogen oxide) such as ventilation gas for road tunnels.

[0002]

[Prior Art]

 As a drive device of this type, as shown in FIG. 5, a driven gear 42 provided on the outer surface of a rotor 41 and a driven shaft 44 driven by a motor 43 with a cyclo gear reducer are meshed with the driven gear 42. It is known to consist of a drive gear 45 which has been set up.

Further, as shown in FIG. 6, a driven sprocket 52 provided on an outer surface of a rotor 51, a drive sprocket 55 provided on a drive shaft 54 driven by a motor 53 with a cyclo gear reducer, and a driven sprocket 52. And a chain 56 wound around a drive sprocket 55 is also known.

[0004]

[Problems to be solved by the device]

 Since the gas treatment amount of the adsorbent rotor used for the above applications is enormous, a large adsorbent rotor is required. In addition, the adsorbent rotor is exposed to the processing gas having a temperature as high as about 250 ° C. and becomes thermally non-uniform, so that it is considerably deformed by heat.

In the conventional device shown in FIG. 5, in order for the rotation of the rotor 41 to be smooth, the driven gear 42 and the drive gear 44 must be meshed smoothly. For that purpose, a high degree of manufacturing precision and installation precision are required for all members including the rotor 41 and the gears 42, 43 of the same, but when driving a relatively small adsorbent rotor, It is not suitable for driving a large-sized rotor with large thermal deformation.

In the device shown in FIG. 6, in addition to the above-mentioned inadequacy, there is also a problem in terms of chain strength, and there is also a problem that the installation area of the device becomes large.

An object of the present invention is to solve the above-mentioned problems and to provide a driving device which is suitable for driving a large-sized rotor having a large thermal deformation.

[0008]

[Means for Solving the Problems]

 The drive device of the adsorbent rotor for the NOx-containing gas purification device according to the present invention includes a means for guiding the drive roller so that the drive roller approaches and separates from the outer surface of the adsorbent rotor, and an adsorbent rotor outer surface. The drive roller comprises an urging means for urging the drive roller so that the drive roller is elastically pressed, and a transmission means for transmitting the drive force to the drive roller.

[0009]

[Action]

 In the drive device of the adsorbent rotor for the NOx-containing gas purification device according to the present invention, the guide roller guides the drive roller so as to approach and separate from the outer surface of the adsorbent rotor, and is elastically pressed by the biasing device. Since the driving force is transmitted to the drive roller by the transmission means in such a biased state as described above, the drive roller absorbs core runout or thermal deformation of the adsorbent rotor.

Further, since the drive roller is simply pressed against the rotor, the drive force of the drive roller is transmitted to the rotor regardless of the diameter of the rotor.

[0011]

【Example】

 An embodiment of this invention will be described below with reference to FIGS.

FIG. 1 and FIG. 2 show a horizontal disc-shaped adsorbent rotor 11 and three drive devices 12 respectively arranged at positions where the lower end of the outer peripheral surface thereof is divided into three.

The rotor 11 is received by rollers 13 to 15 running on three concentric circles.

As shown in detail in FIGS. 3 and 4, the drive device 12 has a geared motor 21 with a brake which is arranged vertically downward with a space from the outer surface of the rotor 11 to the outside. The upper end of the vertical drive shaft 22 is connected to the output shaft of the motor 21. A drive gear 23 is fixed to the drive shaft 22. A vertical transmission shaft 24 is arranged between the outer surface of the rotor 11 and the drive shaft 22, and a transmission gear 25 is fixed to the vertical transmission shaft 24. Furthermore, a pair of swing arms 26 extending in opposite directions are attached to the transmission shaft 24, respectively. A pair of vertical driven shafts 27 are rotatably attached to the intermediate portions of both swinging arms 26. A pair of driven gears 28 are rotatably attached to both driven shafts 27, and these are engaged with a transmission gear 25, respectively. Further, a pair of driving rollers 29 are rotatably attached to both driven shafts 27, and these are fixed to both driven gears 28, respectively, and are brought into contact with the outer surface door of the rotor 11. A pair of vertical connecting rods 31 are fixed to the tip ends of both swing arms. The tip ends of a pair of expandable rods 32 extending inward are respectively connected to the connecting rod 31. Both telescopic rods 32 are respectively biased by a pair of compression coil springs 33 in the extending direction.

Since both telescopic rods 32 are biased by the springs 33, both swinging arms 26 are biased so as to swing their distal ends toward the rotor 11, respectively. As a result, Both drive rollers 29 are elastically pressed against the outer surface of the rotor 11.

When the drive shaft 22 is driven by the motor 21, the drive gear 23 rotates together with the drive shaft 22. Then, the rotation of the drive gear 23 is transmitted to both driven gears 28 via the transmission gear 25, and both drive rollers 29 rotate together with both driven gears 28. As a result, the rotor 11 rotates.

When the rotor 11 rotates, if there is runout or thermal deformation in the rotor 11, the outer peripheral surface of the rotor 11 undulates with respect to the reference plane (a virtual surface when there is no runout or thermal deformation). Although rotating, both swinging arms 26 swing against the force of the spring 33, so that the drive roller 29 does not separate from the outer peripheral surface of the rotor 11, and the center roller runout and thermal deformation of the rotor 11 are prevented. 29 follows.

Furthermore, if three drive devices 12 are provided for one rotor 11, a uniform rotational force is applied to the rotor 11.

[0019]

[Effect of the device]

 According to the present invention, even if there is core runout or thermal deformation of the adsorbent rotor, the drive roller absorbs such runout and thermal deformation. Therefore, the accuracy and installation accuracy of each part of the drive device including the rotor and the drive roller are low. May be.

Further, since the driving force of the driving roller is transmitted to the rotor regardless of the size of the rotor, the size of the rotor can be increased.

[Brief description of drawings]

FIG. 1 is a plan view of a gas purifying apparatus including a driving device according to the present invention.

FIG. 2 is a vertical sectional view of the purification device.

FIG. 3 is a plan view of a driving device according to the present invention.

FIG. 4 is a perspective view of the drive device.

FIG. 5 is a side view of a drive device showing a conventional example.

FIG. 6 is a side view of a drive device showing another conventional example.

[Explanation of symbols]

 11 rotor 21 motor 23 drive gear 26 swing arm 28 driven gear 29 drive roller 33 spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Iwamoto 5-3 28 Nishi-Kujo, Konohana-ku, Osaka City Hitachi Shipbuilding Co., Ltd. (72) Hideji Kobayashi 5-3 28 Nishi-Kujo, Konohana-ku, Osaka No. Hitachi Shipbuilding Co., Ltd. (72) Inventor Masayoshi Ichiki No. 3-28 Nishikujo 5-chome, Konohana-ku, Osaka City Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims for utility model registration] [Claim 1] A drive roller for the outer surface of the adsorbent rotor 11
Guide means for guiding the drive roller 29 so that the drive roller 29 is moved toward and away from the drive roller 29, and biasing means for biasing the drive roller 29 so that the drive roller 29 is elastically pressed against the outer surface of the adsorbent rotor 11. A drive device for an adsorbent rotor for a NOx-containing gas purification device, comprising a transmission means for transmitting a driving force to the drive roller 29.