JPH0352601A - Drum dryer - Google Patents

Abstract

PURPOSE:To easily adjust the spacing between drums by providing a driving means for the sliders of a slide base and a positioning adjusting device for a reset position thereby easily attaching and detaching the movable side drum which is heavy to and from the stationary side drum. CONSTITUTION:The drums 10a, 10b to be heated are disposed horizontally and parallel while a slight spacing is formed between the outer peripheral surfaces thereof. The bearing 20b of the drum 10b is fixed onto a base body 40 via the slide base 30 slidable in the direction perpendicular to the drum shaft. The driving means 6 for the slider 32 of the slide base 30 is provided and the positioning adjusting device 50 for the reset position is provided. This device 50 is constituted of the prime moving slider 51 which has a driving mechanism and can be horizontally moved and the driven slider 52 which is fixed in the sliding direction of the slide base 30 and is vertically movable. The slider 51 and the slider 52 are brought into pressurized contact with each other via the slope in the sliding direction of the slider 51 by which the slider 32 and the slider 52 are pressed at the slope in the supporting direction of the slider 32.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a drum dryer used, for example, to take out dissolved substances contained in a liquid discharged by a scrubber, and in particular, to facilitate the adjustment of the gap between the drums. Regarding drum dryers that can be used for [Prior Art] This type of drum dryer has a pair of heated drums arranged horizontally and in parallel with a slight gap between their outer circumferential surfaces, and a liquid material is supplied between the upper circumferential surfaces of the contact portions. By rotating both drums, the liquid material is introduced onto the outer circumferential surface of the drum and dried, and the dissolved substance therein is deposited as a dry solid on the outer circumferential surface of the drum and scraped off with a scraper knife. By the way, the above-mentioned gap between the drums is small enough to allow the dry solid material that has not been completely scraped to pass through and prevent the supplied liquid from leaking. Conventionally, the gap between the two drums was adjusted at the time of manufacturing. The bearing was completely fixed. Therefore, in an unexpected situation, such as when the scraper knife separates from the drum's outer surface for some reason,
The dry solids deposited on the outer circumferential surface of the drums are directly fed into the gap between the drums, and when the dry solids pass through the gap between the drums, they are sandwiched between both drums and at the same time the reaction force is applied to the outer circumferential surface of the drums. , the outer circumferential surface of the drum will be dented. Thereafter, the gap between the drums becomes larger due to this dent in the outer circumferential surface of the drum, causing leakage of the supplied liquid material and reducing the recovery efficiency of the dry solid material. Therefore, by fixing the bearing of one drum to a slide base provided on the base body so that it can approach and leave the other drum, and positioning it with a locking mechanism such as a shear pin, the bearing can be fixed to a slide base provided on the base, and by positioning it with a locking mechanism such as a shear pin, had a protection mechanism that would allow the shear pin to break and become unlocked, allowing it to easily separate from the other drum.

[Problem to be solved by the invention]

Even with a drum dryer equipped with the above-mentioned protection mechanism, unexpected situations do not occur very often, so if the movable drum is left unmoved for a long period of time, it may become unfavorable under unfavorable conditions. For drum dryers that are operated in a harsh atmosphere, the protective function may not function properly when an unexpected situation occurs due to rust, etc. Therefore, it is necessary to periodically move the movable drum to restore the functions of each part and prepare for unexpected situations. However, moving a drum of considerable size and weight and returning it to its original position is a tedious task, especially since the gap between the drums must be adjusted each time, which takes time. , the current situation is that it is not implemented.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drum dryer that can easily perform the above-mentioned troublesome work, and can also easily adjust the gap between the drums. [Means for Solving the Problems] In order to solve the above problems, the present invention provides the above-mentioned drum dryer with a drive means for the slider of the slide base and a positioning adjustment device for the return position,
This positioning adjustment device is composed of a movable horizontally movable motive slider having a drive mechanism, and a driven slider fixed in the sliding direction of the slide base and movable up and down, and the motive slider and the driven slider are movable. The slider is brought into pressure contact with the slider through an inclined surface in the moving direction, and the slider of the slide base and the driven slider are brought into contact with each other with an inclined surface in the direction in which the slider is supported. [Operation] When the slider of the slide base is moved back and forth by the driving means, one drum fixed to the slider approaches and leaves the other fixed drum, and the slider comes into contact with the side surface of the driven slider of the positioning adjustment device. This restores the gap between the drums. In addition, in the positioning adjustment device, when the driving slider is moved back and forth, the driven slider moves up and down, and since the contact surface of the driven slider with the slider is a slope, the stop position of the slider, that is, the amount of gap between the drums is adjusted. Change. Therefore, if the inclination angle of the contact surface is increased, the amount of displacement of the return position of the slider of the slide base can be made smaller than the amount of displacement of the driven slider, allowing fine adjustment. Furthermore, since the moving direction of the driven slider having the contact surface is different from the sliding direction of the slide base, there is no displacement of the driven slider in contact and waiting, and highly accurate positioning can be achieved. [Examples] Examples will be described below with reference to the drawings. first,
The schematic structure of this drum dryer will be explained based on FIG. The pair of drums 10 heated by steam include a fixed drum 10a having a bearing 20a fixed to a base 40;
A bearing 20b is fixed to a base body 40 via a slide base 30, and is separated from a movable drum 10b that can approach and leave the fixed drum 10a. The wind drums 10a and 10b are arranged horizontally and in parallel, and are brought into contact with each other with a small gap (for example, about 0.8 m) between their outer peripheral surfaces. A partition wall 11 is provided at both ends of the upper peripheral surface of the contact portion, and a supply portion 12 for raw material liquid material is formed by the partition wall 11 and the upper peripheral surface of the contact portion of the drum 10. Further, dry solid matter deposited on the outer peripheral surface of the drum is scraped off by a scraper knife 13 provided at the bottom of the drum 10, and is discharged from a discharge chute 14. Next, the detailed structure of the bearing portion of the movable drum 10b will be explained. As shown in FIGS. 1 and 2, the bearing 2
0b is fixed on a base body 40 via a slide base 30 that is slidable in a direction perpendicular to the drum axis. Further, the slide base 30 is provided with a positioning adjustment device 50 at its base 31, and a piston rod 61 of a hydraulic cylinder 60 is connected to the slider 32, and the hydraulic cylinder 60 moves the movable drum 10b to move the fixed drum. Leave and return to 10a. Note that the slide base 30 has a slider 32 and a base 31.
A Teflon layer 33 is provided on the sliding surface to improve sliding performance. The positioning adjustment device 150 has an integrated rising block 31a attached to the end of the base 31 in the return direction of the movable drum 10b as a reaction force receiver, and a ball mechanism 518 moves the base 31 in the drum axial direction. It consists of a driving slider 51 that moves forward and backward, and a driven slider 52 that can move up and down along the side surface of the rising block 31a. The upper surface of the driving non-rider 51 is an inclined surface in the direction of movement thereof, and a driven slider 52 whose lower surface has a corresponding inclined surface is pressed onto this inclined surface by the compressive force of a spring 52a. In addition, this driven slider 52 and a locking block 32a integrated at the end of the slider 32,
They are arranged so that they come into contact with each other on inclined surfaces in the return direction of the drum 10. Therefore, when the ball screw mechanism 51a is operated to move the driving slider 51, the driven slider 52 moves up and down, and the contact position of the locking block 32a changes with this movement. The hydraulic cylinder 60 is a double-acting type that can be pushed and pulled, and can move the slider 32 forward and backward. Further, this hydraulic cylinder 6f1 moves the locking block 32a to the driven slider 52 when the movable drum 10b returns.
When the slider 32 receives an external force greater than the pressing force of the hydraulic cylinder 60 in the opposite direction, a relief valve (not shown) reduces the hydraulic pressure. escapes and the slider 32 itself is pushed back. Therefore, if the above-mentioned unexpected situation occurs during use of this drum dryer, the movable drum 10b automatically separates from the fixed drum 10a to protect the outer peripheral surfaces of both drums 10. In this way, the hydraulic cylinder 60 not only serves as a driving means for the movable drum 10b, but also has the function of protecting the outer circumferential surface of the drum, so that there is no need for conventionally used protecting means such as shear pins. In addition, the glue ξ in the figure
The switch 62 is for checking the operating state. In this embodiment, a hydraulic cylinder is used as the driving means, but the invention is not limited to this, and other driving sources such as a κV screw jack may also be used. However, depending on the drive source, it may be necessary to separately provide some type of protection device such as the shear pin. [Effect] Since the drum dryer of the present invention has the above configuration, the heavy movable drum can be easily moved toward and away from the fixed drum, and the positioning of the movable drum when returning is easy. It can be done accurately and easily. As a result, periodic drum movement work, which was previously a tedious task, can now be carried out reliably, making it possible to use the equipment more efficiently and over a longer period of time. Another advantage is that the gap between the drums can be adjusted easily and accurately.

[Brief explanation of drawings]

FIG. 1 is a side view showing the main parts of an embodiment according to the present invention;
FIG. 2 is a cross-sectional view showing the positioning and adjusting device same as above, and FIG. 3 is a cross-sectional view showing the same as a whole. 10...Drum, 10a...Fixed drum, 10b
......Movable drum, 20a, 20b...
Bearing, 30...Slide base, 31...Base, 31a...Rising block, 32...Slider, 32a...
Locking block, 40... Base body, 50... Positioning adjustment device, 51... Drive slider, 51a... Ball screw mechanism, 52... ...Followed slider, 52a...Spring, 60...Hydraulic cylinder, 61...
Piston rod, 62...Limit switch.

Claims (1)

[Claims] (1) A pair of drums to be heated are arranged horizontally and in parallel with a slight gap between their outer peripheral surfaces, and the bearing of either drum can be slid in a direction perpendicular to the drum axis. In a drum dryer fixed on a base body via a slide base, a driving means for the slider of the slide base is provided, and a positioning adjustment device for a return position is provided, and this positioning adjustment device is connected to a horizontally movable motive slider having a drive mechanism. and a driven slider fixed in the sliding direction of the slide base and movable up and down, the driving slider and the driven slider are brought into pressure contact with each other through an inclined surface in the moving direction of the driving slider, and the slide base is A drum dryer characterized in that a slider and a driven slider are brought into contact with each other at an inclined surface in a direction in which the slider is supported.