JPH064588U - Air operated valve opening / closing device for tumble dryer - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The open / close control of the air-operated valve attached to the dryer main body can be automatically and quickly performed from the outside before or after the operation, and the explosion-proof property is It can be used even in the required environment. [Structure] A main shaft 2 rotatably supporting a dryer main body 1 on a bearing 3, first and second air supply / exhaust passages formed inside the main shaft 2, material input of the dryer main body 1, product removal Air-operated valve 15 for opening and closing the inlet / outlet 14 for the air, and the air-operated valve 1
The first air supply / exhaust pipe 12 and the second air supply / exhaust pipe 13 that uniquely connect the first air supply / exhaust port 15a and the second air supply / exhaust port 15b to the first and second air supply / exhaust passages and the outer periphery of the main shaft 2 The air distribution joints 16 and 17 are installed so as to allow rotation of the main shaft and have first and second communication passages that communicate with the first and second supply / exhaust passages. , The second communication passage is switched to perform air supply to one side and discharge the other side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air-operated valve opening / closing device for a rotary dryer, which controls opening / closing of an air-operated valve used for feeding a raw material into a dryer body and discharging a product.

[0002]

[Prior art]

 Conventionally, an on-off valve is attached to the dryer body of the rotary dryer in order to put raw materials into the dryer body and to take out products. As this on-off valve, a manual on-off valve, an electromagnetic on-off valve, an air-operated valve, etc. are used, and the on-off control is performed so that the above-mentioned loading and unloading can be performed manually or automatically.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned manual on-off valve has the disadvantage that the work of charging the raw materials and removing the product is troublesome and the work efficiency is extremely poor.The above-mentioned solenoid on-off valve is capable of automatic open / close control but requires explosion-proof properties. In such an environment, there is a problem that it is impossible to put it into practical use because there is a danger of sparks occurring at the rotary joint.

Further, in the above-mentioned air-operated valve, a plurality of compressed air supply / exhaust pipes and exhaust / exhaust pipes are required according to the number of valves, and an on-off valve that rotates together with the dryer main body is required. In order to connect and disconnect with the pipe fitting, a union or one-touch type coupler of the pipe joint is required so that the automatic operation is not possible.

Further, when a coupler or the like is removed at the connecting portion of each of the above pipes, dust is introduced into the pipe from the place where the roller remains open to the outside when the coupler is removed, and the cylinder of the air operated valve is removed. There were problems such as internal damage.

The present invention has been made by paying attention to the above-mentioned conventional problems, and controls opening / closing of an air-operated valve attached to a dryer main body during or before and after the operation of the rotary dryer. It is an object of the present invention to obtain an air-operated valve opening / closing device for a dryer, which can be automatically and quickly externally used and can be used even in an environment where explosion proof is required.

[0007]

[Means for Solving the Problems]

 An air-operated valve opening / closing device for a rotary dryer according to the present invention is attached to a dryer main body, and a main shaft rotatably supported by a bearing on the dryer main body and a first air supply / exhaust unit formed inside the main shaft. A passage and a second air supply / exhaust passage, an air operated valve that opens and closes an inlet / outlet for material input / product removal of the dryer main body, a first air supply / exhaust outlet and a second air supply / exhaust of the air operated valve The first supply / exhaust pipe and the second supply / exhaust pipe that independently connect the mouth to the first supply / exhaust passage and the second supply / exhaust passage, and the outer periphery of the main shaft are allowed to rotate. An air distribution joint that is attached and has a first communication passage and a second communication passage that communicate with the first supply / exhaust passage and the second supply / exhaust passage, and the first communication passage and the second communication passage. One of the communication passages of the It is obtained by a changing configuration.

[0008]

[Action]

 In the air distribution joint in this invention, the air supplied and discharged through the switching valve is supplied and discharged to and from the air actuated valve on the dryer main body, which is a rotating body. The product can be automatically taken out without stopping the operation and operation of the dryer. Therefore, the work of attaching and removing the union and the coupler can be omitted as in the past, and the work efficiency can be improved.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the entire rotary dryer of the present invention, and FIG. 2 is a right side view of the same. In the figure, reference numeral 1 is a container type dryer main body, which has a structure in which a body is covered with a jacket, and a pair of main shafts 2 projecting at both ends of the main body are freely rotatable on a bracket 4 by bearings 3. Is supported by.

Reference numeral 5 is a gear attached to the main shaft 2, and this gear 5 is meshed with a gear 9 driven by a motor 6 installed on the bracket 4 side. The rotation of the motor 6 is transmitted to the gears 9 and 5 via the pulley 8, another pulley (not shown), and the pulley belt 7.

Further, reference numerals 10 and 11 denote first and second supply / exhaust passages and second supply / exhaust passages formed as shown in FIG. A first supply / exhaust pipe and a second supply / exhaust pipe communicating with the first and second supply / exhaust passages 10 and 11, respectively. The other end of each of the first and second air supply / exhaust pipes 12 and 13 is an air operated valve 15 that opens and closes an inlet / outlet 14 for feeding the raw material into the dryer main body 1 and taking out the dried product. Are connected to the first and second air supply / exhaust ports 15a and 15b.

Further, (16) and (17) are attached to the outer periphery of the main shaft (2) via bearings 18 and 19 as shown in FIG. 3 so as to allow the rotation of the main shaft (2). These are air distribution joints, which are connected to each other by bolts 20 and nuts 21 and are mounted on the mounting base 22 on the bracket 4 side so as not to rotate.

The air distribution joints 16 and 17 are preliminarily formed with passages 23 and 24, one end of each of which is connected to the first and second supply / exhaust passages 10 and 11 in the main shaft 2. Each of the air distribution joints 16 and 17 is in communication with each other, and a seal ring is provided on the inner peripheral side of each of the air distribution joints 16 and 17 at a position sandwiching a connecting portion between the passages 23 and 24 and the first and second supply / exhaust passages 10 and 11. 25 to 28 are attached.

Further, 29 and 30 are ventilation pipes each having one end attached to each of the air distribution joints 16 and 17 so as to communicate with the passages 23 and 24. A switching valve 31 such as a solenoid valve that is switched to perform air flow and exhaust air from the other is connected. The switching valve 31 can be provided at a position far from the dryer main body 1. Further, in FIG. 1, reference numeral 37 denotes a pipe which is inserted into the main shaft 2 to evacuate the inside of the dryer main body 1 or supply gas.

In the rotary dryer having such a structure, after the raw material is introduced into the dryer main body 1 through the inlet / outlet port 14, the inlet / outlet port 14 is closed and the inside of the dryer main body 1 is evacuated through the pipe 32. Further, when the main shaft 2 is rotated by driving the motor 6 through the pulley belt 7, the pulley 8 and the gears 9 and 5, the dryer main body 1 is rotated and the raw materials inside are dried while rolling. .

In this way, when the raw material is appropriately dried and commercialized, the inlet / outlet port 14 is opened and discharged from the inside of the dryer main body 1. At this time, the motor 6 is stopped or the evacuation operation is interrupted, if necessary.

The opening / closing of the inlet / outlet 14 is performed by controlling the supply / discharge of compressed air to / from the air operated valve 15. For example, when the switching valve 31 is switched as shown in FIG. 1, the compressed air is discharged through the ventilation pipe 30, the second communication passage 24 of the air distribution joint 17, the second supply / exhaust passage 11, and the second supply / exhaust passage 11. The two air supply / exhaust pipes 13 are successively supplied to the air operated valve 15 which operates to open the inlet / outlet port 14.

The air sent to the air actuated valve 15 is, in turn, the first air supply / exhaust pipe 12, the first air supply / exhaust passage 10, the first communication passage 23 of the air distribution joint 16, and the ventilation pipe 2. 9 and the switching valve 31 are discharged one after another.

On the other hand, when closing the inlet / outlet 14, the switching valve 31 is switched in the opposite direction. As a result, the compressed air flows through the passages in the opposite direction to the above and is discharged. Therefore, the operation of the air operated valve 15 is also reversed, and the inlet / outlet 14 is closed. Further, in the present invention, the air-operated valve 15 on the rotating dryer main body 1 is provided with the first and second supply / exhaust passages 10 and 11 provided in the main shaft 2 and the circumference of the main shaft 2. Since compressed air is supplied through the passages 23 and 24 of the air distribution joints 16 and 17 that enable air supply and discharge, the opening / closing control of the air-operated valve can be performed quickly even when the dryer main body 1 is rotating or stopped. In addition to being automated and automated, it is possible to secure explosion proof resistance.

[0020]

[Effect of device]

 As described above, according to the present invention, the main shaft mounted on the dryer main body and rotatably supporting the dryer main body on the bearing, the first air supply / exhaust passage and the first supply / exhaust passage formed inside the main shaft. 2 air supply / exhaust passages, an air operated valve that opens and closes an inlet / outlet for material input and product removal of the dryer main body, a first air supply / exhaust opening and a second air supply / exhaust opening of the air operated valve, and the above A first air supply / exhaust pipe and a second air supply / exhaust pipe that independently connect the first air supply / exhaust passage and the second air supply / exhaust passage, and are attached to the outer periphery of the main shaft so as to allow rotation of the main shaft. An air distribution joint having a first communication passage and a second communication passage communicating with the first supply / exhaust passage and the second supply / exhaust passage, and the first communication passage provided by the switching valve. And supplying air to one of the second communication passages and exhausting the other The air-operated valve on the dryer main body, which is a rotating body, can be opened and closed automatically and easily from the external fixed side, and it can be operated safely even in an environment where explosion protection is required. Therefore, it is possible to obtain a valve that can overcome all the above-mentioned drawbacks of the conventional manual on-off valve, electromagnetic on-off valve and air operated valve.

[Brief description of drawings]

FIG. 1 is a front view showing an air operated valve opening / closing device of a rotary dryer according to an embodiment of the present invention.

FIG. 2 is a side view of the rotary dryer in FIG.

3 is a cross-sectional view showing details of the air distribution joint in FIG.

[Explanation of symbols]

 1 Dryer Main Body 2 Spindle 3 Bearing 10 First Air Supply / Exhaust Passage 11 Second Air Supply / Exhaust Passage 12 First Air Supply / Exhaust Pipe 13 Second Air Supply / Exhaust Pipe 14 Inlet / Outlet 15 Air Actuated Valve 15a First Air Supply / Exhaust Port 15b Second air supply / exhaust port 16,17 Air distribution joint 23 First communication passage 24 Second communication passage

Claims (1)

[Scope of utility model registration request] 1. A main shaft attached to a dryer main body and rotatably supported by a bearing on the dryer main body, a first air supply / exhaust passage and a second air supply / exhaust passage formed in the main shaft, An air operated valve that opens and closes a material inlet / outlet port of the dryer main body, a first air supply / exhaust port and a second air supply / exhaust port of the air operated valve, the first air supply / exhaust passage, and the second air supply / exhaust passage. A first air supply / exhaust pipe and a second air supply / exhaust pipe that independently connect to the air supply / exhaust passage, and are attached to the outer periphery of the main shaft so as to allow the main shaft to rotate, and An air distribution joint having a first communication passage and a second communication passage communicating with the second supply / exhaust passage, and while supplying air to one of the first communication passage and the second communication passage, Air in a tumble dryer with switching valve switched to vent Actuator valve opening / closing device.