JP2010054179A - Damper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper device, for keeping the air balance of a coating zone to a fixed level. <P>SOLUTION: The device includes: a first opening and closing valve 611 which opens and closes the flow passage of a first duct 723; a second opening and closing valve 612 which opens and closes the flow passage of a second duct 726; and a rotating shaft 614 for operating the first opening and closing valve 611 and the second opening and closing valve 612 to perform opening and closing operations. The rotating shaft 614 is rotated in a normally rotating direction and a reversely rotating direction, whereby the openings of the first valve 611 and the second valve 612 are adjusted so that the second valve 612 opens the flow passage of the second duct 726 when the valve 611 closes the flow passage of the first duct 723, and the second valve 612 closes the flow passage of the second dust 726 when the first valve 611 opens the flow passage of the first duct 723. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a damper device. In particular, the present invention relates to a damper device used in a painting facility for painting the body of an automobile.

  For example, in a painting facility for painting a car body of an automobile, a high concentration vaporized volatile organic compound (hereinafter referred to as VOC) discharged in a painting zone is recovered without being released into the atmosphere. However, conventionally, only the recovery of the VOC vapor has been proposed, and there has been a problem that temperature control in the painting facility and an efficient VOC recovery method are not considered.

  In response to such a problem, a VOC recovery device has been invented that efficiently recovers vaporized VOC and also enables temperature adjustment of the painting facility (see, for example, Patent Document 1).

  The VOC recovery device according to Patent Document 1 includes a refrigerant circulation closed circuit in which a compressor, a condenser, a throttling device, and an evaporator are connected by piping. In addition, this VOC recovery device includes a duct through which air is circulated and led into the room. A cooling unit is formed in the middle of the duct to exchange heat between the air in the duct and the refrigerant in the evaporator, and is circulated through the duct by the indoor cooling operation or the indoor heating operation of the refrigerant circulation closed circuit. The VOC in the air to be recovered is cooled and liquefied in the cooling section.

  Moreover, the VOC collection | recovery apparatus by patent document 1 branches and forms the duct of the ventilation direction downstream rather than a cooling part into the duct for indoors, and the duct for outdoors. And the damper apparatus which switches the ventilation path | route from a cooling part to a duct for indoors or a duct for outdoors is provided in the duct.

Therefore, the VOC recovery device according to Patent Document 1 can freely select whether to supply the air after reducing the VOC concentration to the room or to discharge it to the outside, and use the air with the reduced VOC concentration to indoors. It is possible to freely select whether to cool or not.
JP 2006-167575 A

  In recent years, the above-described painting equipment includes an adsorption concentrating device that removes VOC in exhaust gas discharged in the painting zone by adsorption, and a heat storage combustion device that burns and removes VOC adsorbed by the adsorption concentrating device. ing.

  In such a painting facility, it is planned to introduce a recycling system that returns the purified gas from which VOC has been removed by the adsorption concentrator and the high-temperature gas generated when the VOC is burned and removed by the heat storage combustion device to the painting zone. .

  Then, when the purified gas and the high-temperature gas are circulated through the duct and returned to the coating zone, in this coating facility, the purified gas to be returned to the coating zone when the VOC concentration becomes a certain value or more. And, when the temperature of the hot gas exceeds a certain value, it is necessary to switch the damper device and release it to the atmosphere. This is to keep the air balance of the painting zone within a certain range.

  The damper device according to Patent Document 1 can freely select whether the air after reducing the VOC concentration is supplied indoors or discharged to the outside (that is, the atmosphere), but the air balance of the coating zone is constant. In order to keep the range, it is difficult to automate whether to return to the painting zone or release to the atmosphere.

  In order to keep the air balance of the painting zone within a certain range in the recycling system that returns the purified gas from which VOC has been removed by the adsorption concentrator and the high temperature gas generated when the VOC is burned and removed by the heat storage combustion device to the painting zone. There is a need for a damper device suitable for the above. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a damper device suitable for keeping the air balance of the painting zone within a certain range.

  In order to satisfy the above-mentioned object, the present inventors have provided a damper device that can be interlocked with a duct through which purified gas or high-temperature gas flows, and can further adjust the amount released to the atmosphere in response to seasonal fluctuations and operating conditions. Based on this, it was found that these problems could be solved, and based on this, the following new damper device was invented.

  (1) A first on-off valve that opens and closes the flow path of the first duct and a second on-off valve that opens and closes the flow path of the second duct, and opens and closes the first on-off valve and the second on-off valve. And when the first on-off valve closes the flow path of the first duct, the second opening / closing is performed by rotating the rotation shaft in the forward direction and the reverse direction. The valve opens the flow path of the second duct, and when the first open / close valve opens the flow path of the first duct, the second open / close valve closes the flow path of the second duct. A damper device characterized in that the opening degree of the first on-off valve and the second on-off valve can be adjusted.

  The damper device according to the invention of (1) is arranged at a branch portion between the first duct and the second duct in the exhaust gas recycling system. The exhaust gas recycling system includes a predetermined zone, a concentrating device, a combustion device, a circulation device, and a hot gas recycling means.

  VOC occurs in the predetermined zone. The concentrating device adsorbs and concentrates the volatile organic compound in the exhaust gas discharged from the predetermined zone. The combustion device removes the VOCs that have been adsorbed and concentrated by the concentrating device from the concentrating device and removes them by combustion. The circulation device again guides the purified air that has passed through the concentrator and has been purified to a predetermined zone. The high temperature gas recycling means guides and recycles the high temperature gas generated when the VOC is burned and removed by the combustion device to the predetermined zone.

  The exhaust gas recycle system has a first duct and a second duct. In the first duct, the purified air or the hot gas flows to guide the purified air or the hot gas again to the predetermined zone. The second duct is branched from the first duct and releases purified air or high-temperature gas to the atmosphere. It branches off from the first duct and releases purified gas or hot gas to the atmosphere.

  The valve switching device has a first on-off valve, a second on-off valve, and switching means. The first on-off valve opens and closes the flow path of the first duct. The second on-off valve opens and closes the flow path of the second duct. The switching means is configured such that when the first on-off valve closes the flow path of the first duct, the second on-off valve opens the flow path of the second duct, and the first on-off valve opens the flow path of the first duct. When the second on-off valve closes the flow path of the second duct.

  The switching means operates by detecting the concentration of VOC of the purified gas discharged from the adsorption concentrating device, and operates by detecting the temperature of the high-temperature gas discharged from the heat storage combustion device.

  Here, in the first duct, the purified gas or the high-temperature gas flows and the purified gas or the high-temperature gas is returned to the plurality of coating zones. As a matter of fact, the first duct in which the purified gas flows and the high-temperature gas Means that the painting facility has a second first duct through which is distributed. It is preferable that the first first duct and the second first duct are connected after passing through the valve switching device, and the purified gas and the high-temperature gas are merged and returned to the plurality of coating zones.

  Similarly, the second duct is branched from the first duct, and the release of the purified gas or the high-temperature gas to the atmosphere means that the first second duct branched from the first first duct and the second first It means that the painting facility has a second second duct branched from the duct.

  Therefore, the damper device includes the first valve switching device disposed at the branch portion of the first first duct and the first second duct, and the branch portion of the second first duct and the second second duct. A second valve switching device is provided. The first valve switching device and the second valve switching device can function (activate) independently of each other. On the other hand, since the first valve switching device and the second valve switching device have the same configuration, the first valve switching device and the second valve switching device are treated as the same.

  Generally, in damper control, a partition plate called a damper is arranged inside a duct, and the air volume in the duct is adjusted by changing the inclination angle of the damper. That is, if the damper is arranged so that it is perpendicular to the direction of the wind flow inside the duct, the air volume in the duct is minimized, and if the damper is arranged in the duct parallel to the direction of the wind flow, The airflow is maximized, and the airflow in the duct can be adjusted between the minimum and maximum by changing the angle of inclination of the damper.

  Normally, that is, when the painting facility is in operation, the first opening / closing valve opens the flow path of the first duct, and the second opening / closing valve closes the flow path of the second duct. A closed circuit is formed in which the purified gas and the high temperature gas return to the plurality of coating zones.

  When the concentration of the VOC in the purified gas discharged from the adsorption concentrator is detected and exceeds a predetermined value, the switching means is activated, the first on-off valve closes the flow path of the first duct, and the second on-off valve The flow path of 2 ducts can be opened to return to the normal value. When the temperature of the hot gas discharged from the heat storage combustion device is detected and exceeds a predetermined value, the switching means is activated, the first on-off valve closes the flow path of the first duct, and the second on-off valve The flow path of 2 ducts can be opened to return to the normal value.

  Here, the valve switching device is configured such that when one damper closes one duct, the other damper opens the other duct, and when one damper opens one duct, the other damper opens the other duct. The damper has the other duct closed and has a mechanical interlock function that allows reversible operation, thus ensuring the reliability of the recycling system.

  The damper device according to the invention of (1) detects the concentration of VOC in the purified gas when returning the purified gas to the plurality of coating zones via the air conditioner. Purified gas is released into the atmosphere, and in the case of an appropriate detector, this purified gas is sent to the air conditioner. Therefore, a certain level of clean air can always be recycled. Further, by controlling the switching means so as to exhaust a constant air volume, the air balance of the painting zone can be kept within a certain range.

  In the damper device according to the invention of (1), when the high temperature gas generated by the heat storage combustion device is returned to the plurality of coating zones, the temperature of the high temperature gas discharged from the heat storage combustion device is detected and the switching means is operated. . For example, when the heat storage combustion apparatus starts up, the high temperature gas does not reach a predetermined temperature, and therefore, this high temperature gas is automatically released to the atmosphere. On the other hand, when the hot gas reaches a predetermined temperature, the hot gas is returned to the plurality of coating zones and recycled.

  Thus, the damper device according to the invention of (1) can recover heat (thermal recycling) of the high-temperature gas discharged from the heat storage combustion device at a predetermined temperature.

  The damper device according to the present invention detects the concentration of VOC in the purified gas when returning the purified gas to the plurality of coating zones via the air conditioner. In the case of release to the atmosphere and an appropriate detector, this purified gas is sent to the air conditioner. Therefore, a certain level of clean air can always be recycled. Further, by controlling the switching means so as to exhaust a constant air volume, the air balance of the painting zone can be kept within a certain range.

  Further, in the damper device according to the present invention, when the high temperature gas generated by the heat storage combustion device is returned to the plurality of coating zones, the temperature of the high temperature gas discharged from the heat storage combustion device is detected and the switching means is operated. The damper device according to the present invention can thermally recycle the high-temperature gas discharged from the heat storage combustion device at a predetermined temperature.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram showing an embodiment of a painting facility in which a damper device according to an embodiment of the present invention is used. FIG. 2 is a front view of the damper device according to the embodiment. FIG. 3 is a perspective view of the damper device according to the embodiment, and a servo motor is used to drive the damper device. FIG. 4 is a perspective view of the damper device according to the embodiment, and an air cylinder is used to drive the damper device.

  Initially, the structure of the coating equipment in which the damper apparatus by embodiment of this invention is used is demonstrated. A painting facility 100 shown in FIG. 1 paints a car body as an object to be painted. The painting facility 100 includes a painting system 110, an adsorption concentrating device 200, a heat storage combustion device 300, and a recycling system 130.

  In FIG. 1, the coating system 110 includes a plurality of coating zones 111 and 111. The adsorption concentrator 200 adsorbs and concentrates VOC in the exhaust gas discharged from the coating system 110. The regenerative combustion apparatus 300 burns and removes the VOC that has been adsorbed and concentrated by the adsorption and concentration apparatus 200. The adsorption concentrator 200 and the heat storage combustion apparatus 300 constitute a VOC removal system 120 that removes VOC contained in the exhaust discharged from the coating system 110.

  In FIG. 1, the recycle system 130 returns the purified gas purified by passing through the adsorption concentrator 200 and the high-temperature gas generated when the VOC is burned and removed by the heat storage combustion device 300 to the plurality of coating zones 111 and 111. Let

  The plurality of coating zones 111 and 111 are arranged along the conveying direction of the object to be coated. The coating system 110 further includes an air supply device 112, an air supply path 113, and a drying furnace 114. The air supply device 112 air-conditions and supplies air to the plurality of coating zones 111. Air-conditioned air flows through the air supply path 113. The drying furnace 114 is supplied with air for drying a filter built in the filter device 400 described later.

  The coating zone 111 includes a static pressure chamber 111A that diffuses the air supplied from the air supply device 112 through the air supply path 113 to reduce the speed and increase the pressure. The coating zone 111 is provided with an upper rectifying plate 111B that temporarily closes the lower surface of the static pressure chamber 111A and discharges air downward.

  The painting zone 111 includes a painting chamber 111C located below the upper rectifying plate 111B. A painting robot 111D for painting an object to be coated is disposed inside the painting chamber 111C. An exhaust supply path 115 is disposed below the painting chamber 111C.

  In the painting zone 111, the object to be coated is painted by the painting robot 111D. The air supplied from the air supply device 112 to the painting zone 111 is discharged from the exhaust supply path 115 by an exhaust fan (not shown).

  The VOC removal system 120 includes a filter device 400 and an activated carbon filter device 500. The exhaust discharged from the exhaust supply path 115 passes through the filter device 400. The activated carbon filter device 500 is provided downstream of the filter device 400, and the exhaust gas that has passed through the filter device 400 passes therethrough.

  The adsorption concentrating device 200 is provided downstream of the activated carbon filter device 500, and adsorbs and concentrates VOC contained in the exhaust gas that has passed through the activated carbon filter device 500. The regenerative combustion apparatus 300 burns and removes the VOC that has been adsorbed and concentrated by the adsorption and concentration apparatus 200.

  The filter device 400 is disposed on the flow path of the exhaust discharged from the coating system 110, and removes paint mist, paint debris, and the like contained in the exhaust discharged from the plurality of coating zones 111 and the drying furnace 114.

  The activated carbon filter device 500 is provided on the downstream side of the activated carbon filter device 500 by adsorbing a part of the VOC contained in the exhaust discharged from the coating system 110 or discharging a part of the adsorbed VOC. The VOC concentration in the exhaust gas supplied to the adsorption concentration apparatus 200 is adjusted.

  In FIG. 1, the first duct 735 passes the purified gas that has passed through the adsorption concentration device 200 and returns it to the plurality of coating zones 111 and 111. The second duct 736 is branched from the first duct 735 and can release the purified gas to the atmosphere. A first valve switching device (hereinafter referred to as a damper device) 610 that is a first damper device is disposed at a branch portion between the first duct 735 and the second duct 736.

  On the other hand, in FIG. 1, in the first duct 723, the high temperature gas generated when the VOC is burned and removed by the heat storage combustion device 300 flows and returns to the plurality of coating zones 111 and 111. The second duct 726 is branched from the first duct 723 and can release high-temperature gas to the atmosphere. A second valve switching device (hereinafter referred to as a damper device) 620 that is a second damper device is disposed at a branch portion between the first duct 723 and the second duct 726.

  Next, the configuration of the damper device according to the embodiment of the present invention will be described. Since the first damper device 610 and the second damper device 620 have the same configuration, the first damper device 610 will be described as a representative.

  Referring to FIG. 2, the damper device 610 includes a first on-off valve 611, a second on-off valve 612, and switching means 613. The first on-off valve 611 opens and closes the flow path of the first duct 735. The second opening / closing valve 612 opens and closes the flow path of the second duct 736. When the first opening / closing valve 611 closes the flow path of the first duct 735, the switching means 613 opens the flow path of the second duct 736 when the first opening / closing valve 611 closes the flow path of the first duct 735. The second on-off valve 612 closes the flow path of the second duct 736 when the flow path is open.

  Referring to FIG. 1, the switching means 613 operates by detecting the concentration of the VOC of the purified gas discharged from the adsorption concentrator 200 and detects the temperature of the hot gas discharged from the heat storage combustion device 300. To do.

  Referring to FIG. 2, the first on-off valve 611 has a first insulator crank 611a. When the one end portion of the first lever crank 611a is rotated, the first on-off valve 611 can be rotated. The second on-off valve 612 has a second lever crank 612a. The second on-off valve 612 can be rotated by rotating one end of the second lever crank 612a.

  Referring to FIG. 2, the switching unit 613 includes a rotating shaft 614, a rotating unit 615 (see FIGS. 3 and 4), a swing disk 616, a first link bar 617, and a second link bar 618. Yes. The rotation shaft 614 crosses the first duct 735 in a direction substantially orthogonal to the flow direction of the purified gas in the first duct 735 (or the high temperature gas in the first duct 723). The rotating means 615 is disposed outside the first duct 735 and rotates the rotating shaft 614 (see FIGS. 3 and 4).

  Referring to FIG. 2, the swing disk 616 is attached coaxially with the rotation shaft 614. In addition, the oscillating disk 616 has rotational coupling points C1 and C2 at two points on the circumference that are opened at a predetermined angle from the center.

  Referring to FIG. 2, one end of the first link rod 617 is rotationally coupled to one rotational coupling point C1, and the other end is rotationally coupled to one end of the first lever crank 611a. One end of the second link rod 618 is rotationally coupled to the other rotational coupling point C2, and the other end is rotationally coupled to one end of the second lever crank 612a.

  Referring to FIG. 2, in the damper device 610, the first lever crank 611a, the first link bar 617, and the swinging disk 616 constitute a first lever crank mechanism K1. The first lever crank mechanism K1 is formed when the link (which corresponds to the partition wall of the first duct 735 in the embodiment of the present invention) that forms a pair with the first lever crank 611a that is the shortest link is a fixed link. Yes. When the first lever crank mechanism K1 reciprocates the swing disk 616 at a predetermined angle, the motion is transmitted to the first link rod 617, and the first lever crank 611a can be swung. That is, the first on-off valve 611 can be tilted at a predetermined angle.

  Referring to FIG. 2, in the damper device 610, the second lever crank 612a, the second link rod 618, and the swinging disk 616 constitute a second lever crank mechanism K2. The second lever crank mechanism K2 is formed when the link (which corresponds to the partition wall of the first duct 735 in the embodiment of the present invention) that forms a pair with the second lever crank 612a that is the shortest link is a fixed link. Yes. When the second lever crank mechanism K2 reciprocates the swing disk 616 at a predetermined angle, the movement is transmitted to the second link rod 618, and the second lever crank 612a can be swung. That is, the second on-off valve 612 can be tilted to a predetermined angle.

  Referring to FIG. 2, normally, the first insulator crank 611 a is disposed in a direction substantially orthogonal to the flow direction of the purified gas in the first duct 735 (or the high-temperature gas in the first duct 723), and the first on-off valve 611. Opens the first duct 735. On the other hand, the second insulator crank 612a is disposed in a direction parallel to the flow direction of the purified gas in the second duct 736 (or the high-temperature gas in the first duct 723), and the second on-off valve 612 closes the second duct 736. .

  When the swinging disc 616 is rotated at a predetermined angle in one direction, one end of the first lever crank 611a is dragged by the first link rod 617, and the first on-off valve 611 moves the first duct 735. Can be closed. On the other hand, when the swinging disc 616 is rotated in one direction at a predetermined angle, one end of the second lever crank 612a is pushed by the second link rod 618, and the second opening / closing valve 612 causes the second duct 736 to move. Can be opened.

  On the other hand, when the swing disk 616 is rotated by a predetermined angle in the other direction, one end of the first lever crank 611a is pushed by the first link rod 617, and the first on-off valve 611 moves the first duct. Can be opened. On the other hand, when the swing disk 616 is rotated in the other direction at a predetermined angle, one end of the second lever crank 612a is dragged by the second link rod 618, and the second opening / closing valve 612 causes the second duct 736 to move. Can be closed.

  Referring to FIG. 2, the swing disk 616 has two rotational coupling points C1 and C2 provided at equal intervals. Since the lengths of the first link rod 617 and the second link rod 618 are fixed, for example, the second opening / closing valve 612 is replaced by changing one end of the second link rod 618 to another rotational coupling point C2. The aperture ratio can be finely adjusted.

  Referring to FIGS. 3 and 4, the damper device 610 has a first on-off valve 611, a second on-off valve 612, and an oscillating disc 616 that are divided into four parts. It can also be said that the damper device 610 includes the first lever crank mechanism K1 and the second lever crank mechanism K2 divided into four. In the damper device 610, since the first on-off valve 611, the second on-off valve 612, and the swinging disc 616 are separately arranged, the opening ratio of the first on-off valve 611 and the second on-off valve 612 can be further finely adjusted. .

  Referring to FIG. 3, the rotation means 615 includes a servo motor 615 m whose output shaft is connected to one end of the rotation shaft 614.

  If a hydraulic servo motor is used as the servo motor 615m, a mechanical damper device that ensures the reliability of the recycling system can be realized. By controlling the angle of the oscillating disk 616 with the servo motor 615m, a constant amount of gas can always be exhausted to prevent disturbance of the air balance in the coating zone 111 (see FIG. 1).

  Referring to FIG. 4, the rotating means 615 includes a positioning air cylinder 615c that can change the stroke of the piston rod 615r. One end of the rotation shaft 614 has a crank rod 614 c that rotates the rotation shaft 614. And the front-end | tip part of piston rod 615r which advances / retreats is connected with the front-end | tip part of the crank rod 614c.

  In FIG. 4, in the damper device 610, the stroke of the piston rod 615 r is converted into the rotation angle of the swing disk 616. By using an air cylinder as an actuator for driving the swing disk 616, a mechanical damper device can be realized. The positioning air cylinder has an advantage that the stroke of the piston rod can be subdivided.

  Next, the operation of the damper device according to the embodiment of the present invention will be described.

  Referring to FIGS. 1 and 2, normally, that is, when the painting facility 100 is in operation, the first on-off valve 611 opens the flow path of the first ducts 735 and 723, and the second on-off valve 612 is in the second state. Since the flow paths of the ducts 736 and 726 are closed, the first ducts 735 and 723 constitute a closed circuit in which the purified gas and the high temperature gas return to the plurality of coating zones 111 and 111.

  Referring to FIGS. 1 and 2, the VOC concentration of the purified gas discharged from the adsorption concentrator 200 is detected by the detector S1, and when it exceeds a predetermined value, the switching means 613 is activated and the first on-off valve 611 is operated. Closes the flow path of the first duct 735, and the second on-off valve 612 can return to the normal value by opening the flow path of the second duct 736. In addition, it is preferable that the detector S1 is not limited to the illustrated location but is disposed at an appropriate location where the interlock function operates.

  1 and 2, the temperature of the hot gas discharged from the heat storage combustion device 300 is detected by the detector S2, and when the temperature becomes equal to or higher than a predetermined value, the switching means 613 is operated, and the first on-off valve 611 is operated. Closes the flow path of the first duct 723, and the second on-off valve 612 can return to the normal value by opening the flow path of the second duct 726. In addition, it is preferable that the detector S2 is not limited to the illustrated location but is disposed at an appropriate location where the interlock function operates.

  In the damper device according to the embodiment of the present invention, when one damper closes one duct, the other damper opens the other duct, and when one damper opens one duct, The other damper closes the other duct, and has a mechanical interlock function that allows reversible operation, thus ensuring the reliability of the recycling system.

  Referring to FIG. 1, the damper device 610 according to the embodiment of the present invention returns the purified gas of the adsorption concentrator 200 to a plurality of coating zones 111 and 111 via an air conditioner (not shown). When the concentration is detected, the purified gas is released to the atmosphere in the case of an inappropriate detection device, and the purified gas is sent to the air conditioner in the case of an appropriate detection device. Therefore, a certain level of clean air can always be recycled. Further, by controlling the switching means 613 so as to exhaust a constant air volume, the air balance of the painting zone 111 can be kept within a certain range.

  Referring to FIG. 1, the damper device 620 according to the embodiment of the present invention returns a high temperature gas discharged from the heat storage combustion device 300 when returning the high temperature gas generated by the heat storage combustion device 300 to the plurality of coating zones 111 and 111. The switching means 613 is activated when the temperature of the gas is detected. For example, when the heat storage combustion apparatus 300 starts up, since the high temperature gas has not reached a predetermined temperature, the high temperature gas is automatically released to the atmosphere. On the other hand, when the hot gas reaches a predetermined temperature, the hot gas is returned to the plurality of coating zones 111 and 111 for recycling.

  As described above, the damper device 620 according to the embodiment of the present invention can recover heat (thermal recycling) of the high-temperature gas discharged from the heat storage combustion device 300 at a predetermined temperature.

  2 to 4, in the damper device according to the embodiment of the present invention, when one damper closes one duct, the other damper opens the other duct, and one damper When the other duct is open, the other damper closes the other duct and has a mechanical interlock function that allows reversible operation, ensuring the reliability of the recycling system A mechanical damper device is realized. In general, mechanical damper devices are considered to have fewer malfunctions than electrically controlled damper devices.

It is a lineblock diagram showing one embodiment of the painting equipment in which the damper device of one embodiment by the present invention is used. It is a front view of the damper apparatus by the said embodiment. It is a perspective view of the damper device according to the embodiment, and a servo motor is used to drive the damper device. It is a perspective view of the damper device according to the embodiment, and an air cylinder is used for driving the damper device.

Explanation of symbols

610 and 620 Damper device 611 First on-off valve 612 Second on-off valve 614 Rotating shaft 723 and 735 First duct 726 and 736 Second duct

Claims (1)

A first on-off valve that opens and closes the flow path of the first duct; and a second on-off valve that opens and closes the flow path of the second duct;
A rotation shaft for operating opening and closing of the first on-off valve and the second on-off valve;
By rotating the rotating shaft in the forward direction and the reverse direction,
When the first on-off valve closes the flow path of the first duct, the second on-off valve opens the flow path of the second duct;
When the first on-off valve opens the flow path of the first duct, the first on-off valve and the second on-off valve are opened so that the second on-off valve closes the flow path of the second duct. A damper device characterized in that the degree can be adjusted.

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