JP2007320695A - Method for determining feed interval of powder to transport pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for determining the interlocking of a plurality of timers for controlling the operation of a feeding device so as to intermittently feed powder of a predetermined amount in a transport pipe when performing the plug transport of the powder. <P>SOLUTION: In a feed device of powder to a transport pipe, in which a first non-return valve 9 is arranged immediately below an inlet 3 of a pressure tank 6, a second non-return valve 10 is arranged immediately below a discharge port, a lower side of the first non-return valve is connected to a compressed air source 11 via a first solenoid valve 13, a third solenoid valve 16 is connected to a first conduit, a detection means 17 is arranged in the pressure tank, and a control means 18 for interlocking the first to third solenoid valves via a plurality of timers, the time required for pushing the powder into the transport pipe 7 or the pressure loss of the fed compressed air occurring in the transport pipe is measured so that the pressure loss of the compressed air is balanced with the pressure of the fed compressed air. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、粉体の輸送管への送込み間隔の決定方法に係り、より詳しくは、粉体の輸送管への送込み装置の輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、前記粉体の輸送管への送込み装置の作動を制御する複数のタイマーの連動を決定する方法に関する。 The present invention relates to a method for determining an interval for feeding powder into a transport pipe. More specifically, the present invention relates to a method for transporting powder by plug using compressed air using a transport pipe of a feeder for feeding powder to a transport pipe. In connection with this, the present invention relates to a method for determining the interlocking of a plurality of timers for controlling the operation of a device for feeding powder into the transport pipe so as to intermittently feed a predetermined amount of powder into the transport pipe.

従来、粉体の輸送管への送込み装置の一つとして、モータで回転される定量切出器を下端に設けると共に上部にダンパー付受入り口を設けた第１圧力計付設の圧力容器をロードセルを介して重量計測可能に支持し、この圧力容器の上方に、その下部に排出口を設けると共に上部にダンパー付供給口を設けた第2圧力計付設の補助タンクを配設し、前記ロードセルと前記ダンパーとを計測演算制御器を介して電気的に接続し、前記圧力容器の受入り口と補給タンクの排出口とを伸縮自在管及びダンパーを介して連通し、前記圧力容器内上部と補給タンク内上部間を配管及び２個の開閉弁を介して連通すると共に配管における２個の開閉弁間に排気弁付設の排気管を連通し、かつ前記第１圧力計と第2圧力計とを計測圧力値の比較演算制御を可能にして電気的に接続したものがある。
特開平１０-３５８８６号公報 Conventionally, as one of the devices for feeding powder into a transport pipe, a load vessel is provided with a pressure vessel with a first pressure gauge that is provided with a metering cutter rotated by a motor at the lower end and a receiving opening with a damper at the top. An auxiliary tank with a second pressure gauge is provided above the pressure vessel, with a discharge port at the bottom and a supply port with a damper at the top, and the load cell. The damper is electrically connected via a measurement calculation controller, and the pressure vessel receiving port and the replenishing tank outlet are communicated via a telescopic tube and a damper, and the pressure vessel upper portion and the replenishing tank The internal upper part is communicated via a pipe and two on-off valves, an exhaust pipe with an exhaust valve is communicated between the two on-off valves in the pipe, and the first pressure gauge and the second pressure gauge are measured. Enables comparative calculation control of pressure values There are things which are electrically connected Te.
JP-A-10-35886

しかし、このように構成された従来の粉体の輸送管への送込み装置では、構造が複雑な上に大規模の高価なものになるなどの問題があった。 However, the conventional powder feeding apparatus configured as described above has problems such as a complicated structure and a large-scale expensive device.

本発明は上記の事情に鑑みてなされたもので、その目的は、粉体の輸送管への送込み装置を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、前記粉体の輸送管への送込み装置の作動を制御する複数のタイマーの連動を決定して輸送圧を適切なものにする方法を提供することにある。 The present invention has been made in view of the above circumstances. The purpose of the present invention is to use a device for feeding powder into a transport pipe, and when a powder is plug-transported via compressed air, a predetermined amount of powder is added. An object of the present invention is to provide a method for determining the interlocking of a plurality of timers for controlling the operation of the device for feeding the powder into the transport pipe to intermittently feed the powder into the transport pipe so as to make the transport pressure appropriate. .

上記の問題を解消するために請求項１の本発明における粉体の輸送管への送込み間隔の決定方法は、輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパと；圧力容器構造を成し、前記ホッパの粉体排出口が臨む投入口を上部壁にまた下部壁に排出口をそれぞれ有する加圧タンクと；一端が前記加圧タンクの下部外面に前記排出口を包囲して気密に装着され他端が輸送管の基端に連通接続された弁箱と；前記加圧タンク内における前記投入口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口を閉鎖可能な第１逆止弁と；前記弁箱内における前記排出口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口を閉鎖可能な第２逆止弁と；前記第１逆止弁の下面と圧縮空気源との間を第１導管を介して接続・遮断する第１電磁開閉弁と；前記第２逆止弁の下面と前記圧縮空気源との間を第２導管を介して接続・遮断する第2電磁開閉弁と；前記第１導管内の圧縮空気を排出可能な第3電磁開閉弁と；前記加圧タンク内の粉体の有無を検知する検知手段と；この検知手段の検知結果に基づき、複数のタイマーを介して前記第１〜第３電磁開閉弁が相互に連動して開閉するようにこれらを制御する制御手段と；を備えた粉体の輸送管への送込み装置における前記輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、複数の前記タイマーの連動を決定する方法であって、前記加圧タンクから前記輸送管に粉体を押し出すのに要する時間を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整することを特徴とする。   In order to solve the above problem, the method for determining the interval for feeding the powder into the transport pipe of the present invention according to claim 1 comprises a hopper for storing the powder to be transported and having a powder outlet at the lower end; A pressure tank having a pressure vessel structure and having a discharge port on the upper wall and a discharge port on the lower wall, respectively, facing the powder discharge port of the hopper; one end of the discharge port on the lower outer surface of the pressure tank A valve box which is enclosed and airtightly mounted and whose other end is connected to the base end of the transport pipe; and is disposed vertically below the input port in the pressurized tank and is movable up and down by compressed air. A first check valve capable of closing the charging port; a second check valve which is disposed in the valve box directly below the discharge port so as to be movable up and down and can be raised by compressed air to close the discharge port. A first conduit between the lower surface of the first check valve and the compressed air source; A first electromagnetic on-off valve that is connected / interrupted, and a second electromagnetic on-off valve that connects / disconnects between the lower surface of the second check valve and the compressed air source via a second conduit; A third electromagnetic on-off valve capable of discharging compressed air in the conduit; a detecting means for detecting the presence or absence of powder in the pressurized tank; and a plurality of timers via a plurality of timers based on detection results of the detecting means. Control means for controlling the first and third electromagnetic on-off valves so as to open and close in conjunction with each other, and the powder is supplied via compressed air using the transport pipe in the apparatus for feeding powder to the transport pipe. A method of determining the interlocking of a plurality of timers in order to intermittently send a predetermined amount of powder into the transport pipe when the body is plug transported, wherein the powder is transferred from the pressurized tank to the transport pipe. Measure the time required for extrusion, and based on this measurement result, The operation time of the plurality of timers is adjusted so that the pressure loss related to the supplied compressed air becomes a value corresponding to the pressure of the supplied compressed air.

また、請求項２の本発明における粉体の輸送管への送込み間隔の決定方法は、輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパと；圧力容器構造を成し、前記ホッパの粉体排出口が臨む投入口を上部壁にまた下部壁に排出口をそれぞれ有する加圧タンクと；一端が前記加圧タンクの下部外面に前記排出口を包囲して気密に装着され他端が輸送管の基端に連通接続された弁箱と；前記加圧タンク内における前記投入口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口を閉鎖可能な第１逆止弁と；前記弁箱内における前記排出口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口を閉鎖可能な第２逆止弁と；前記第１逆止弁の下面と圧縮空気源との間を第１導管を介して接続・遮断する第１電磁開閉弁と；前記第２逆止弁の下面と前記圧縮空気源との間を第２導管を介して接続・遮断する第2電磁開閉弁と；前記第１導管内の圧縮空気を排出可能な第3電磁開閉弁と；前記加圧タンク内の粉体の有無を検知する検知手段と；この検知手段の検知結果に基づき、複数のタイマーを介して前記第１〜第３電磁開閉弁が相互に連動して開閉するようにこれらを制御する制御手段と；を備えた粉体の輸送管への送込み装置における前記輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、複数の前記タイマーの連動を決定する方法であって、前記輸送管に供給された圧縮空気が前記輸送管において生じる圧力損失を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整することを特徴とする。 According to a second aspect of the present invention, there is provided a method for determining an interval for feeding powder into a transport pipe, comprising: a hopper for storing powder to be transported and having a powder discharge port at a lower end; A pressure tank having a charging port facing the powder discharge port of the hopper on the upper wall and a discharge port on the lower wall; one end surrounding the discharge port on the lower outer surface of the pressure tank and mounting in an airtight manner A valve box having the other end connected in communication with the base end of the transport pipe ; and disposed in the pressurized tank directly below the input port so as to be vertically movable and can be raised by compressed air to close the input port. A first check valve; and a second check valve disposed in the valve box directly below the discharge port so as to be movable up and down and capable of being raised by compressed air to close the discharge port; Connect / shut off the lower surface of the check valve and the compressed air source via the first conduit. A first electromagnetic on-off valve; a second electromagnetic on-off valve that connects and shuts off the lower surface of the second check valve and the compressed air source via a second conduit; and discharges the compressed air in the first conduit A possible third electromagnetic on-off valve; detection means for detecting the presence or absence of powder in the pressurized tank; and the first to third electromagnetic on-off valves via a plurality of timers based on detection results of the detection means And a control means for controlling them so that they open and close in conjunction with each other. In carrying the powder by plug using the transport pipe in the apparatus for feeding the powder into the transport pipe, the plug is transported via compressed air. A method for determining the interlocking of a plurality of timers so as to intermittently feed a predetermined amount of powder into the transport pipe, and measuring a pressure loss generated in the transport pipe by compressed air supplied to the transport pipe Based on the measurement result, the compression supplied to the transport pipe The operation time of the plurality of timers is adjusted so that the pressure loss related to air becomes a value commensurate with the pressure of the supplied compressed air.

以上の説明から明らかなように本発明は、輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパと；圧力容器構造を成し、前記ホッパの粉体排出口が臨む投入口を上部壁にまた下部壁に排出口をそれぞれ有する加圧タンクと；一端が前記加圧タンクの下部外面に前記排出口を包囲して気密に装着され他端が輸送管の基端に連通接続された弁箱と；前記加圧タンク内における前記投入口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口を閉鎖可能な第１逆止弁と；前記弁箱内における前記排出口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口を閉鎖可能な第２逆止弁と；前記第１逆止弁の下面と圧縮空気源との間を第１導管を介して接続・遮断する第１電磁開閉弁と；前記第２逆止弁の下面と前記圧縮空気源との間を第２導管を介して接続・遮断する第2電磁開閉弁と；前記第１導管内の圧縮空気を排出可能な第3電磁開閉弁と；前記加圧タンク内の粉体の有無を検知する検知手段と；この検知手段の検知結果に基づき、複数のタイマーを介して前記第１〜第３電磁開閉弁が相互に連動して開閉するようにこれらを制御する制御手段と；を備えた粉体の輸送管への送込み装置における前記輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、複数の前記タイマーの連動を決定する方法であって、前記加圧タンクから前記輸送管に粉体を押し出すのに要する時間を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整するか、または、前記輸送管に供給された圧縮空気が前記輸送管において生じる圧力損失を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整するから、粉体の輸送管への送込み装置を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、前記粉体の輸送管への送込み装置の作動を制御する複数のタイマーの連動を適確に決定して輸送圧を適切なものにすることができるなどの優れた実用的効果を奏する。 As is apparent from the above description, the present invention relates to a hopper for storing powder to be transported and having a powder discharge port at the lower end; and a charging port structure, and a charging port facing the powder discharge port of the hopper A pressure tank having a discharge port on the upper wall and a discharge wall on the lower wall; one end of which is hermetically attached to the lower outer surface of the pressure tank so as to surround the discharge port, and the other end is connected to the proximal end of the transport pipe A first check valve disposed in the pressurized tank directly below the inlet and movable up and down by compressed air to close the inlet; A second check valve which is disposed directly below the discharge port and is movable up and down by compressed air and can close the discharge port; between a lower surface of the first check valve and a compressed air source A first electromagnetic on-off valve that connects / disconnects through a first conduit; and the second check valve A second electromagnetic on-off valve for connecting / disconnecting a lower surface and the compressed air source via a second conduit; a third electromagnetic on-off valve capable of discharging the compressed air in the first conduit; and the pressurized tank Detecting means for detecting the presence or absence of powder in the inside; and controlling them based on the detection result of the detecting means so that the first to third electromagnetic on-off valves open and close in conjunction with each other via a plurality of timers And when the powder is plug-transported through the compressed air using the transport pipe in the apparatus for feeding the powder into the transport pipe having the control means, a predetermined amount of powder is intermittently supplied to the transport pipe. A method for determining the interlocking of a plurality of timers to be fed into the vehicle, measuring the time required to extrude the powder from the pressurized tank to the transport pipe, and supplying the transport pipe based on the measurement result The pressure loss associated with the compressed air is The operation time of a plurality of the timers is adjusted so as to be a value commensurate with the air pressure, or the pressure loss generated in the transport pipe by the compressed air supplied to the transport pipe is measured, and the measurement result Therefore, the operation time of the plurality of timers is adjusted so that the pressure loss related to the compressed air supplied to the transport pipe becomes a value corresponding to the pressure of the supplied compressed air. In order to intermittently feed a predetermined amount of powder into the transport pipe when the powder is plug-transported via compressed air using the pipe feed apparatus, There are excellent practical effects such as the ability to appropriately determine the interlocking of a plurality of timers for controlling the operation to make the transport pressure appropriate.

以下、本発明を適用した粉体の輸送管への送込み装置について図１に基づき詳細に説明する。本粉体の輸送管への送込み装置は、輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパ１と、圧力容器構造を成し、上部壁に投入口３をまた下部壁に排出口４をそれぞれ有する加圧タンク６と、前記ホッパ１の粉体排出口と前記加圧タンク６の投入口３とを連通接続するシュート手段５と、断面Ｌ字状を成して上端が前記加圧タンク６の下部外面に前記排出口４を包囲して気密に装着され下端が輸送管７の基端に連通接続された弁箱８と、前記加圧タンク６内における前記投入口３の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口３を閉鎖可能な第１逆止弁９と、前記弁箱８内における前記排出口４の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口４を閉鎖可能な第２逆止弁１０と、前記第１逆止弁９の下面と圧縮空気源１１との間を第１導管１２を介して接続・遮断する第１電磁開閉弁１３と、前記第２逆止弁１０の下面と前記圧縮空気源１１との間を第２導管１４を介して接続・遮断する第2電磁開閉弁１５と、前記第１導管１２内の圧縮空気を排出可能な第3電磁開閉弁１６と、前記加圧タンク６内の粉体の有無を検知する検知手段としてのレベル計１７と、このレベル計１７の検知結果に基づき、タイマーを介して前記第１〜第３電磁開閉弁１３・１５・１６が相互に連動して開閉するようにこれらを制御する制御手段１８と、で構成してある。 Hereinafter, an apparatus for feeding powder into a transport pipe to which the present invention is applied will be described in detail with reference to FIG. The apparatus for feeding the powder into the transport pipe comprises a hopper 1 which stores powder to be transported and which has a powder discharge port at the lower end, and a pressure vessel structure. A pressure tank 6 having a discharge port 4 on the wall, chute means 5 for connecting the powder discharge port of the hopper 1 and the input port 3 of the pressure tank 6 in communication, and an L-shaped cross section. A valve box 8 having an upper end surrounding the discharge port 4 on the lower outer surface of the pressurized tank 6 and hermetically mounted, and a lower end communicating with the proximal end of the transport pipe 7; and the charging in the pressurized tank 6 A first check valve 9 that is arranged directly below the port 3 so as to be movable up and down and can be raised by compressed air to close the input port 3, and moves up and down just below the discharge port 4 in the valve box 8. A second check valve 10 that is freely arranged and can be raised by compressed air to close the outlet 4; A first electromagnetic on-off valve 13 that connects / cuts off a lower surface of the first check valve 9 and a compressed air source 11 via a first conduit 12, a lower surface of the second check valve 10, and the compressed air A second electromagnetic on-off valve 15 that connects / disconnects to / from the source 11 via a second conduit 14, a third electromagnetic on-off valve 16 that can discharge compressed air in the first conduit 12, and the pressurized tank 6, the level meter 17 serving as a detecting means for detecting the presence or absence of powder, and the first to third electromagnetic opening / closing valves 13, 15, 16 are mutually connected via a timer based on the detection result of the level meter 17. And control means 18 for controlling them so as to open and close in conjunction with each other.

そして、前記第１・第２逆止弁９・１０は、供給された圧縮空気の一部が外部に流出する構造になっている。また、前記第３電磁開閉弁１６は、集塵機に連通接続させたダクト２１に連通接続してある。また、前記シュート手段５内は、導管２２を介して前記ホッパ１の上部に連通接続してあってシュート手段５内とホッパ１の上部内は同圧になっている。また、前記輸送管７の先端は粉体貯蔵タンク２３に連通接続してある。なお、図中２６は流量調整弁である。 The first and second check valves 9 and 10 have a structure in which a part of the supplied compressed air flows out. The third electromagnetic opening / closing valve 16 is connected to a duct 21 that is connected to a dust collector. The inside of the chute means 5 is connected to the upper part of the hopper 1 through a conduit 22 so that the inside of the chute means 5 and the upper part of the hopper 1 have the same pressure. The tip of the transport pipe 7 is connected to the powder storage tank 23. In the figure, reference numeral 26 denotes a flow rate adjusting valve.

このように構成したものは、図示するように、レベル計１７の「粉体無し」の検知により、第１電磁開閉弁１３が閉じられるとともに第３電磁開閉弁１６が開かれて加圧タンク６内の圧縮空気が排出し、第１逆止弁９が自重によって下降して投入口３が開かれ、これにより、ホッパ１内の粉体が自重滑降してシュート手段５内を通過したのち加圧タンク６内に流入する。この間、第２電磁開閉弁１５が開かれていて第２逆止弁１０および弁箱８内に圧縮空気が供給され、これにより、第２逆止弁１０が上昇していて排出口４が閉じられるとともに、輸送管７内の既存の粉体が圧縮空気によってプラグ輸送されている。 As shown in the figure, the pressure tank 6 is configured in such a manner that when the level meter 17 detects “no powder”, the first electromagnetic on-off valve 13 is closed and the third electromagnetic on-off valve 16 is opened. Compressed air is discharged, the first check valve 9 is lowered by its own weight, and the inlet 3 is opened. As a result, the powder in the hopper 1 slides down by its own weight and passes through the chute means 5 and then added. It flows into the pressure tank 6. During this time, the second electromagnetic on-off valve 15 is opened and compressed air is supplied into the second check valve 10 and the valve box 8, whereby the second check valve 10 is raised and the discharge port 4 is closed. In addition, the existing powder in the transport pipe 7 is plug-transported by compressed air.

こうして、粉体の加圧タンク６内への流入によりレベル計１７が「粉体有り」を検知したのちタイマーの作動よって所要時間が経過すると、第３電磁開閉弁１６が閉られたのち第１電磁開閉弁１３が開かれて、粉体の加圧タンク８内への流入が続行されながら、圧縮空気が第１逆止弁９および加圧タンク６に供給され、これに伴って、第１逆止弁９が上昇して投入口３が閉じられるとともに加圧タンク６内が加圧される。この加圧タンク６内の加圧と第２逆止弁１０の自重により、第２逆止弁１０が下降して排出口４が開かれ、加圧タンク６の粉体が輸送管７内に送り込まれる。 In this way, after the level meter 17 detects that “powder is present” due to the flow of powder into the pressurized tank 6 and the required time elapses due to the operation of the timer, the first electromagnetic on-off valve 16 is closed and then the first While the electromagnetic on-off valve 13 is opened and the flow of powder into the pressurized tank 8 is continued, compressed air is supplied to the first check valve 9 and the pressurized tank 6. The check valve 9 rises to close the inlet 3 and pressurize the pressurized tank 6. Due to the pressurization in the pressurization tank 6 and the weight of the second check valve 10, the second check valve 10 is lowered and the discharge port 4 is opened, and the powder in the pressurization tank 6 is put into the transport pipe 7. It is sent.

粉体の輸送管７内への送込みによりレベル計１７が「粉体無し」を検知すると、制御手段１８は、第１電磁開閉弁１３が開かれた時点と、レベル計１７が「粉体無し」を検知する時点とを検出し、これら２個の時点から、加圧タンク６の粉体が輸送管７内に送り込まれるまでの時間を算出し、さらに、この算出した時間に、輸送管７の内容積と加圧タンク６の容積の比（最小約３：１）から定まる係数を掛けて、次の粉体を加圧タンク６から輸送管７内に送り込むまでの時間、換言すると、２個のプラグ状粉体が間隔（空間）を生成するための時間を演算する。 When the level meter 17 detects “no powder” by feeding the powder into the transport pipe 7, the control means 18 detects when the first electromagnetic opening / closing valve 13 is opened and the level meter 17 indicates “powder”. The time until the powder in the pressurized tank 6 is fed into the transport pipe 7 is calculated from these two time points, and the transport pipe is further calculated at the calculated time. 7 is multiplied by a coefficient determined from the ratio of the inner volume of 7 to the volume of the pressurized tank 6 (minimum of about 3: 1), in other words, the time until the next powder is fed from the pressurized tank 6 into the transport pipe 7, The time for generating the interval (space) between the two plug-like powders is calculated.

この演算結果に基づき、上述したように、レベル計１７が「粉体有り」を検知したのち第３電磁開閉弁１６を閉じかつ第１電磁開閉弁１３を開く時点をタイマーによって決める。これに伴い、再び、レベル計１７の「粉体有り」の検知によりタイマーが作動して、所要時間経過後、第３電磁開閉弁１６が閉られたのち第１電磁開閉弁１３が開かれ、圧縮空気が第１逆止弁９および加圧タンク６に供給されて加圧タンク６内が加圧され、加圧タンク６の粉体が輸送管７内に送り込まれる。そして、加圧タンク６の容積で決まるプラグ状粉体の長さと、２個のプラグ状粉体が生成する間隔（空間）により、輸送管７の内容積に占めるプラグ状粉体の割合が決められる。 Based on this calculation result, as described above, after the level meter 17 detects “powder is present”, the time point at which the third electromagnetic switching valve 16 is closed and the first electromagnetic switching valve 13 is opened is determined by a timer. Along with this, the timer is activated again when the level meter 17 detects that “powder is present”, and after the required time has elapsed, the first electromagnetic on-off valve 13 is opened after the third electromagnetic on-off valve 16 is closed, Compressed air is supplied to the first check valve 9 and the pressurized tank 6 to pressurize the pressurized tank 6, and the powder in the pressurized tank 6 is sent into the transport pipe 7. The ratio of the plug-shaped powder in the inner volume of the transport pipe 7 is determined by the length of the plug-shaped powder determined by the volume of the pressurized tank 6 and the interval (space) between the two plug-shaped powders. It is done.

こうして、輸送管７内における粉体部分と空間部分の比である混合比を一定に保ち、輸送管７において生じる圧縮空気に係る圧力損失（輸送圧）が、輸送管７内に供給される圧縮空気の圧力に見合った適切な値となるようにする。以上の作動が繰り返されて、加圧タンク６内の粉体が輸送管７内に断続的に送り込まれるとともに、輸送管７内に送り込まれた粉体は粉体貯蔵タンク２３にプラグ輸送される。 Thus, the mixing ratio that is the ratio of the powder portion to the space portion in the transport pipe 7 is kept constant, and the pressure loss (transport pressure) related to the compressed air generated in the transport pipe 7 is compressed into the transport pipe 7. Ensure that the value is appropriate for the air pressure. The above operation is repeated, and the powder in the pressurized tank 6 is intermittently fed into the transport pipe 7 and the powder fed into the transport pipe 7 is plug-transported to the powder storage tank 23. .

なお、上述の実施例では、複数のタイマーの連動の調整は、加圧タンク６から輸送管７に粉体を押し出すのに要する時間を測定し、この測定結果に基づき行うようにしたが、これに限定されるものではなく、例えば、第２導管１４に圧力スイッチを設けて、第３電磁開閉弁１６を閉じかつ第１電磁開閉弁１３を開いて粉体を輸送管７内に送り込む時点に、輸送管７に供給された圧縮空気が輸送管７において生じる圧力損失を測定し、この測定結果に基づき、輸送管７において生じる圧縮空気に係る圧力損失が、輸送管７内に供給される圧縮空気の圧力に見合った値より大きくなった場合には、次の粉体を加圧タンク６から輸送管７内に送り込むまでの時間が長くなるように、また、輸送管７内に供給される圧縮空気の圧力に見合った値より小さくなった場合には、次の粉体を加圧タンク６から輸送管７内に送り込むまでの時間が短くなるように、複数のタイマーの作動時間を調整して、粉体を輸送管７内に送り込むようにしてもよい。 In the above-described embodiment, the interlocking adjustment of the plurality of timers is performed based on the measurement result by measuring the time required to extrude the powder from the pressurized tank 6 to the transport pipe 7. For example, when a pressure switch is provided in the second conduit 14 to close the third electromagnetic on-off valve 16 and open the first electromagnetic on-off valve 13 to feed the powder into the transport pipe 7, for example. Then, the pressure loss generated in the transport pipe 7 by the compressed air supplied to the transport pipe 7 is measured, and based on the measurement result, the pressure loss related to the compressed air generated in the transport pipe 7 is compressed into the transport pipe 7. When the air pressure exceeds a value commensurate with the air pressure, it is supplied to the transport pipe 7 so that the time until the next powder is fed from the pressurized tank 6 into the transport pipe 7 becomes longer. Smaller than the value commensurate with the compressed air pressure In such a case, the operation time of a plurality of timers is adjusted so that the time until the next powder is fed from the pressurized tank 6 into the transport pipe 7 is shortened, and the powder is moved into the transport pipe 7. You may make it send to.

本発明の最良の形態を示す模式図である。It is a schematic diagram which shows the best form of this invention.

符号の説明Explanation of symbols

１ ホッパ
３ 投入口
４ 排出口
６ 加圧タンク
７ 輸送管
８ 弁箱
９ 第１逆止弁
１０ 第２逆止弁
１１ 圧縮空気源
１２ 第１導管
１３ 第１電磁開閉弁
１４ 第２導管
１５ 第２電磁開閉弁
１６ 第３電磁開閉弁
１７ レベル計
１８ 制御手段 1 Hopper
3 Inlet 4 Outlet 6 Pressurized tank
7 Transport pipe 8 Valve box 9 First check valve 10 Second check valve 11 Compressed air source 12 First conduit 13 First electromagnetic on-off valve 14 Second conduit 15 Second electromagnetic on-off valve 16 Third electromagnetic on-off valve 17 Level Total 18 control means

Claims (4)

輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパと；圧力容器構造を成し、前記ホッパの粉体排出口が臨む投入口を上部壁にまた下部壁に排出口をそれぞれ有する加圧タンクと；一端が前記加圧タンクの下部外面に前記排出口を包囲して気密に装着され他端が輸送管の基端に連通接続された弁箱と；前記加圧タンク内における前記投入口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口を閉鎖可能な第１逆止弁と；前記弁箱内における前記排出口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口を閉鎖可能な第２逆止弁と；前記第１逆止弁の下面と圧縮空気源との間を第１導管を介して接続・遮断する第１電磁開閉弁と；前記第２逆止弁の下面と前記圧縮空気源との間を第２導管を介して接続・遮断する第2電磁開閉弁と；前記第１導管内の圧縮空気を排出可能な第3電磁開閉弁と；前記加圧タンク内の粉体の有無を検知する検知手段と；この検知手段の検知結果に基づき、複数のタイマーを介して前記第１〜第３電磁開閉弁が相互に連動して開閉するようにこれらを制御する制御手段と；を備えた粉体の輸送管への送込み装置における前記輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、複数の前記タイマーの連動を決定する方法であって、
前記加圧タンクから前記輸送管に粉体を押し出すのに要する時間を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整することを特徴とする粉体の輸送管への送込み間隔の決定方法。 A hopper for storing powder to be transported and having a powder outlet at the lower end; forming a pressure vessel structure, the inlet facing the powder outlet of the hopper facing the upper wall and the outlet on the lower wall, respectively A pressure tank having one end surrounding the discharge port on the lower outer surface of the pressure tank and hermetically mounted, and the other end communicating with the proximal end of the transport pipe; A first check valve that is arranged directly below the inlet and is movable up and down by compressed air and can close the inlet; and is arranged to move up and down directly below the outlet in the valve box A second check valve that is installed and can be raised by compressed air to close the discharge port; and a first check valve that connects and disconnects the lower surface of the first check valve and the compressed air source via a first conduit. A second conduit between the lower surface of the second check valve and the compressed air source; A second electromagnetic on-off valve that is connected and cut-off via; a third electromagnetic on-off valve capable of discharging compressed air in the first conduit; and a detecting means for detecting the presence or absence of powder in the pressurized tank; And a control means for controlling the first to third electromagnetic on-off valves so as to open and close in conjunction with each other via a plurality of timers based on the detection result of the detection means. A method for determining the interlocking of a plurality of timers in order to intermittently feed a predetermined amount of powder into the transport pipe when the powder is plug-transported via compressed air using the transport pipe in the feeding apparatus Because
The time required to extrude the powder from the pressurized tank to the transport pipe is measured, and based on the measurement result, the pressure loss related to the compressed air supplied to the transport pipe becomes the pressure of the supplied compressed air. A method for determining an interval for feeding powder into a transport pipe, wherein the operating times of the plurality of timers are adjusted so that the values match each other. 輸送すべき粉体を貯蔵しかつ下端に粉体排出口を有するホッパと；圧力容器構造を成し、前記ホッパの粉体排出口が臨む投入口を上部壁にまた下部壁に排出口をそれぞれ有する加圧タンクと；一端が前記加圧タンクの下部外面に前記排出口を包囲して気密に装着され他端が輸送管の基端に連通接続された弁箱と；前記加圧タンク内における前記投入口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記投入口を閉鎖可能な第１逆止弁と；前記弁箱内における前記排出口の真下に上下動自在に配設されかつ圧縮空気によって上昇して前記排出口を閉鎖可能な第２逆止弁と；前記第１逆止弁の下面と圧縮空気源との間を第１導管を介して接続・遮断する第１電磁開閉弁と；前記第２逆止弁の下面と前記圧縮空気源との間を第２導管を介して接続・遮断する第2電磁開閉弁と；前記第１導管内の圧縮空気を排出可能な第3電磁開閉弁と；前記加圧タンク内の粉体の有無を検知する検知手段と；この検知手段の検知結果に基づき、複数のタイマーを介して前記第１〜第３電磁開閉弁が相互に連動して開閉するようにこれらを制御する制御手段と；を備えた粉体の輸送管への送込み装置における前記輸送管を用いて圧縮空気を介し粉体をプラグ輸送するに当り、所定量の粉体を前記輸送管に断続的に送り込むべく、複数の前記タイマーの連動を決定する方法であって、
前記輸送管に供給された圧縮空気が前記輸送管において生じる圧力損失を測定し、この測定結果に基づき、前記輸送管に供給された圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整することを特徴とする粉体の輸送管への送込み間隔の決定方法。 A hopper for storing powder to be transported and having a powder outlet at the lower end; forming a pressure vessel structure, the inlet facing the powder outlet of the hopper facing the upper wall and the outlet on the lower wall, respectively A pressure tank having one end surrounding the discharge port on the lower outer surface of the pressure tank and hermetically mounted, and the other end communicating with the proximal end of the transport pipe; A first check valve that is arranged directly below the inlet and is movable up and down by compressed air and can close the inlet; and is arranged to move up and down directly below the outlet in the valve box A second check valve that is installed and can be raised by compressed air to close the discharge port; and a first check valve that connects and disconnects the lower surface of the first check valve and the compressed air source via a first conduit. A second conduit between the lower surface of the second check valve and the compressed air source; A second electromagnetic on-off valve that is connected and cut-off via; a third electromagnetic on-off valve capable of discharging compressed air in the first conduit; and a detecting means for detecting the presence or absence of powder in the pressurized tank; And a control means for controlling the first to third electromagnetic on-off valves so as to open and close in conjunction with each other via a plurality of timers based on the detection result of the detection means. A method for determining the interlocking of a plurality of timers in order to intermittently feed a predetermined amount of powder into the transport pipe when the powder is plug-transported via compressed air using the transport pipe in the feeding apparatus Because
The pressure loss generated in the transport pipe by the compressed air supplied to the transport pipe is measured. Based on the measurement result, the pressure loss related to the compressed air supplied to the transport pipe becomes the pressure of the supplied compressed air. A method for determining an interval for feeding powder into a transport pipe, wherein the operating times of the plurality of timers are adjusted so that the values match each other. 請求項１に記載の粉体の輸送管への送込み間隔の決定方法において、
前記検知手段の「粉体無し」の検知により前記第１電磁開閉弁を閉じたのち前記第３電磁開閉弁を開いて前記加圧タンク内の圧縮空気を排出させ、前記第１逆止弁を下降させて前記投入口を開き、前記ホッパ内の粉体を前記加圧タンク内に流入させ、
前記第２電磁開閉弁を開いて前記第２逆止弁および前記弁箱内に圧縮空気を供給し、前記第２逆止弁を上昇させて前記排出口を閉じ、
前記検知手段が「粉体有り」を検知したのちタイマーの作動によって所要時間経過させて、
前記第３電磁開閉弁を閉じたのち前記第１電磁開閉弁を開き、圧縮空気を前記第１逆止弁および前記加圧タンクに供給して前記第１逆止弁を上昇させ、前記投入口を閉じるとともに前記加圧タンク内を加圧して、前記第２逆止弁を下降させて前記排出口を開き、前記加圧タンクの粉体を前記輸送管内に送り込み、
前記検知手段が「粉体無し」を検知したのち、前記制御手段は、前記第１電磁開閉弁が開かれた時点と、前記検知手段が「粉体無し」を検知する時点とを検出して、これら２個の時点から前記加圧タンクの粉体が輸送管内に送り込まれるまでの時間を算出し、
この算出した時間に、前記輸送管の内容積と前記加圧タンクの容積の比から定まる係数を掛けて、次の粉体を前記加圧タンクから前記輸送管内に送り込むまでの時間として演算し、
この演算結果に基づき、前記検知手段が「粉体有り」を検知したのち前記第３電磁開閉弁を閉じかつ前記第１電磁開閉弁を開くための時点をタイマーによって決め、
これにより、前記輸送管において生じる圧縮空気に係る圧力損失が、供給される圧縮空気の圧力に見合った値となるように、複数の前記タイマーの作動時間を調整することを特徴とする粉体の輸送管への送込み間隔の決定方法。 In the method for determining the feeding interval of the powder according to claim 1 into the transport pipe,
When the detection means detects no powder, the first electromagnetic on-off valve is closed, then the third electromagnetic on-off valve is opened to discharge the compressed air in the pressurized tank, and the first check valve is opened. Lowering and opening the inlet, allowing the powder in the hopper to flow into the pressurized tank,
Opening the second electromagnetic on-off valve to supply compressed air into the second check valve and the valve box, raising the second check valve and closing the outlet;
After the detection means detects "powder is present", the required time elapses by the operation of the timer,
After closing the third electromagnetic on-off valve, the first electromagnetic on-off valve is opened, compressed air is supplied to the first check valve and the pressurized tank to raise the first check valve, and the input port And pressurizing the inside of the pressurized tank, lowering the second check valve to open the discharge port, and sending the powder in the pressurized tank into the transport pipe,
After the detection means detects “no powder”, the control means detects when the first electromagnetic on-off valve is opened and when the detection means detects “no powder”. , Calculate the time from the two points in time until the powder in the pressurized tank is sent into the transport pipe,
Multiplying the calculated time by a coefficient determined from the ratio of the internal volume of the transport pipe and the volume of the pressurized tank to calculate the time until the next powder is fed into the transport pipe from the pressurized tank,
Based on the calculation result, after the detection means detects “the presence of powder”, the time point for closing the third electromagnetic on-off valve and opening the first electromagnetic on-off valve is determined by a timer,
Thereby, the operation time of the plurality of timers is adjusted so that the pressure loss related to the compressed air generated in the transport pipe becomes a value corresponding to the pressure of the supplied compressed air. A method for determining the interval of delivery to the transport pipe 請求項２に記載の粉体の輸送管への送込み間隔の決定方法において、
前記検知手段の「粉体無し」の検知により前記第１電磁開閉弁を閉じたのち前記第３電磁開閉弁を開いて前記加圧タンク内の圧縮空気を排出させ、前記第１逆止弁を下降させて前記投入口を開き、前記ホッパ内の粉体を前記加圧タンク内に流入させ、
前記第２電磁開閉弁を開いて前記第２逆止弁および前記弁箱内に圧縮空気を供給し、前記第２逆止弁を上昇させて前記排出口を閉じ、
前記検知手段が「粉体有り」を検知したのちタイマーの作動によって所要時間経過させて、
前記第３電磁開閉弁を閉じたのち前記第１電磁開閉弁を開き、圧縮空気を前記第１逆止弁および前記加圧タンクに供給して前記第１逆止弁を上昇させ、前記投入口を閉じるとともに前記加圧タンク内を加圧して、前記第２逆止弁を下降させて前記排出口を開き、前記加圧タンクの粉体を前記輸送管内に送り込み、
こうして、前記第３電磁開閉弁を閉じかつ前記第１電磁開閉弁を開いて粉体を前記輸送管内に送り込む時点に、前記輸送管に供給された圧縮空気が前記輸送管において生じる圧力損失を測定し、
この測定結果に基づき、輸送管において生じる圧縮空気に係る圧力損失が、輸送管内に供給される圧縮空気の圧力に見合った値より大きくなった場合には、次の粉体を前記加圧タンクから前記輸送管内に送り込むまでの時間が長くなるように、また、輸送管内に供給される圧縮空気の圧力に見合った値より小さくなった場合には、次の粉体を前記加圧タンクから前記輸送管内に送り込むまでの時間が短くなるように、複数の前記タイマーの作動時間を調整することを特徴とする粉体の輸送管への送込み間隔の決定方法。

In the determination method of the feeding interval of the powder according to claim 2 to the transport pipe,
When the detection means detects no powder, the first electromagnetic on-off valve is closed, then the third electromagnetic on-off valve is opened to discharge the compressed air in the pressurized tank, and the first check valve is opened. Lowering and opening the inlet, allowing the powder in the hopper to flow into the pressurized tank,
Opening the second electromagnetic on-off valve to supply compressed air into the second check valve and the valve box, raising the second check valve and closing the outlet;
After the detection means detects "powder is present", the required time elapses by the operation of the timer,
After closing the third electromagnetic on-off valve, the first electromagnetic on-off valve is opened, compressed air is supplied to the first check valve and the pressurized tank to raise the first check valve, and the input port And pressurizing the inside of the pressurized tank, lowering the second check valve to open the discharge port, and sending the powder in the pressurized tank into the transport pipe,
Thus, when the third electromagnetic on-off valve is closed and the first electromagnetic on-off valve is opened and powder is fed into the transport pipe, the pressure loss generated in the transport pipe by the compressed air supplied to the transport pipe is measured. And
Based on this measurement result, when the pressure loss related to the compressed air generated in the transport pipe becomes larger than the value corresponding to the pressure of the compressed air supplied into the transport pipe, the next powder is removed from the pressurized tank. The next powder is transferred from the pressurized tank to the transport pipe so that it takes a long time to be fed into the transport pipe and when the pressure is smaller than the value corresponding to the pressure of the compressed air supplied into the transport pipe. A method for determining an interval for feeding powder into a transport pipe, wherein the operation time of the plurality of timers is adjusted so that the time until the feed into the pipe is shortened.