JPH07253077A - Changeover device of valve at carrying device of heavily viscous object - Google Patents
Changeover device of valve at carrying device of heavily viscous objectInfo
- Publication number
- JPH07253077A JPH07253077A JP6069900A JP6990094A JPH07253077A JP H07253077 A JPH07253077 A JP H07253077A JP 6069900 A JP6069900 A JP 6069900A JP 6990094 A JP6990094 A JP 6990094A JP H07253077 A JPH07253077 A JP H07253077A
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- JP
- Japan
- Prior art keywords
- cylinder
- cylinders
- valve
- pair
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、汚泥やコンクリート
ミルク等の重粘性物の連続搬送装置の弁の切替装置の改
良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a valve switching device of a continuous conveying device for heavy viscous substances such as sludge and concrete milk.
【０００２】[0002]
【従来の技術】従来、一対のシリンダを用いて重粘性物
を連続的に搬送する装置は公知である。特公昭５２−１
３６１０号、実公昭５２−４９６２号はその例である。2. Description of the Related Art Conventionally, an apparatus for continuously conveying a heavy viscous material using a pair of cylinders is known. Japanese Patent Publication 52-1
3610 and Jitsuko Sho 52-4962 are examples.
【０００３】[0003]
【発明が解決しようとする課題】然しながら、これらは
何れもシリンダ内で往復するピストンを用いて、これら
の作動（押出し行程）を弁機構によって連続させている
ので、この弁の切替時には、圧力の急上昇や搬送物が脈
動する問題がある。However, since all of them use a piston that reciprocates in a cylinder and their operation (extrusion stroke) is continued by a valve mechanism, when the valve is switched, the pressure is changed. There is a problem of sudden rise and pulsation of conveyed goods.
【０００４】[0004]
【課題を解決するための手段】この発明は、往復ピスト
ンを内装した一対のシリンダを用いて搬送物を連続的に
搬送するようにした重粘性物の搬送装置において、搬送
物の供給口に設けた弁の開閉を時間的に制御して一対の
シリンダの一方のシリンダのピストンが圧送行程の終端
行程部分に位置するとき、他方のシリンダのピストンの
圧送を開始させ、すなわち、一対のピストンの圧送行程
を重複させてピストンの反転時における背圧の急上昇や
搬送物の脈動を防止するようにしたものである。SUMMARY OF THE INVENTION The present invention relates to a heavy viscous material conveying device for continuously conveying a conveyed object using a pair of cylinders having a reciprocating piston therein, and is provided at a supply port of the conveyed object. When the piston of one cylinder of the pair of cylinders is located at the end stroke part of the pumping stroke by controlling the opening and closing of the valve, the pumping of the piston of the other cylinder is started, that is, the pumping of the pair of pistons is started. The strokes are overlapped to prevent a sudden increase in back pressure and pulsation of a conveyed product when the piston is reversed.
【０００５】すなわち、その要旨とするところは、一対
のシリンダを交互に作動させて連続的に重粘性物を搬送
するようにした搬送装置において、一対のシリンダの搬
送物の吐出口にそれぞれチャッキ弁を、搬送物の吸入口
にポペット弁をそれぞれ設けるとともに、各シリンダの
周辺には、その内部に設けた往復動ピストンの往復動死
点近傍に位置させてその位置にきた往復動ピストンを検
知することが出来るリミットスイッチを設け、これらリ
ミットスイッチと上記ポペット弁とを連動連結して、一
方のシリンダの往復動ピストンが圧送行程終端直前にき
たとき、他方のシリンダの往復動ピストンが圧送を開始
するようにし、同時に一方のシリンダのポペット弁を開
放するとともに、他方のシリンダのポペット弁を閉止す
るようにしたものである。That is, the gist of the invention is that in a transfer device in which a pair of cylinders are alternately operated to transfer a heavy viscous material continuously, a check valve is provided at each of the discharge ports of the transferred material of the pair of cylinders. , A poppet valve is provided at the suction port of the conveyed product, and the reciprocating pistons located at the reciprocating pistons provided inside the cylinders are positioned near the reciprocating dead center of the reciprocating pistons and detected at the positions A limit switch that can be used is provided, and these limit switches and the poppet valve are interlocked and linked, and when the reciprocating piston of one cylinder comes immediately before the end of the pressure feeding stroke, the reciprocating piston of the other cylinder starts pressure feeding. And simultaneously open the poppet valve of one cylinder and close the poppet valve of the other cylinder. A.
【０００６】[0006]
【作用】すなわち、この発明では、一対のシリンダのピ
ストンを交互に作動させて、重粘性物を搬送物を連続的
に搬送する装置において、一対のピストンの圧送行程の
一部を重複させて搬送物が脈動するのを防止するととも
に、ピストンの往動終端近傍で、搬送物の吸入弁開放と
搬送物の吐出口に設けたチャッキ弁との閉塞とによっ
て、ピストンの反転時においてピストンにかかる背圧や
搬送物が脈動するのを緩和することができるものであ
る。以下、図面にしたがってこの発明を具体的に説明す
る。That is, according to the present invention, in a device for continuously transporting a heavy viscous substance by alternately operating the pistons of a pair of cylinders, a part of the pressure feeding stroke of the pair of pistons is overlapped and conveyed. This prevents the product from pulsating and closes the piston when the piston is reversed by opening the intake valve of the conveyed product and closing the check valve provided at the discharge port of the conveyed product in the vicinity of the forward end of the piston. It is possible to reduce pressure and pulsation of the conveyed product. Hereinafter, the present invention will be specifically described with reference to the drawings.
【０００７】[0007]
【実施例】図１〜図４は、この発明に係る装置の構成並
びにその作動を説明するための模式縦断平面図であっ
て、図中、符号ＡおよびＢは、搬送用のシリンダで対を
なすように配設されている。符号１および２はシリンダ
ＡおよびＢにそれぞれ装入したピストン、符号３および
は４シリンダＡおよびシリンダＢの吐出口に設けたチャ
ッキ弁、符号５および６は、シリンダＡおよびシリンダ
Ｂの吸入口に設けたポペット弁、符号７はホッパーを示
すものである。1 to 4 are schematic vertical plan views for explaining the construction and operation of the apparatus according to the present invention, in which reference numerals A and B are conveying cylinders which form a pair. It is arranged so as to be eggplant. Reference numerals 1 and 2 are pistons loaded in the cylinders A and B, reference numerals 3 and 4 are check valves provided at the discharge ports of the cylinders A and B, and reference numerals 5 and 6 are suction ports of the cylinders A and B. The provided poppet valve, reference numeral 7 indicates a hopper.
【０００８】次に、符号ＬＳ１、ＬＳ２、ＬＳ３、ＬＳ
４は、リミットスイッチを示し、ＬＳ１およびＬＳ２
は、シリンダＡの周辺において内装したピストン１の往
復ストロークの始端と終端近傍に設置してあり、その位
置にきたピストン１を検知できるようにしてある。ま
た、このリミットスイッチＬＳ１およびＬＳ２は、シリ
ンダＡのポペットバルブ５の制御装置に連結してあっ
て、その位置にきたピストン１を検知したとき、ポペッ
トバルブ５を時間的に制御して開閉できるようにある。Next, reference numerals LS1, LS2, LS3, LS
4 is a limit switch, LS1 and LS2
Are installed in the vicinity of the start and end of the reciprocating stroke of the internally mounted piston 1 around the cylinder A so that the piston 1 at that position can be detected. Further, the limit switches LS1 and LS2 are connected to a control device for the poppet valve 5 of the cylinder A, and when the piston 1 at that position is detected, the poppet valve 5 can be temporally controlled to open and close. It is in.
【０００９】また、リミットスイッチＬＳ３およびＬＳ
４も、シリンダＢのピストン２およびポペットバルブ６
に上述と同様に連動連結してあって、シリンダＢに関し
てピストン２の作動に連動してポペットバルブ２を時間
的に制御して開閉できるようにしてある。Further, limit switches LS3 and LS
4 is also the piston 2 of cylinder B and the poppet valve 6
In the same manner as described above, the cylinder B is linked with the operation of the piston 2 so that the poppet valve 2 can be temporally controlled to open and close.
【００１０】次に、上述のように構成した弁装置の作動
を図１〜図４に随って説明する。図１は、シリンダＡの
ピストン１が圧送終了前、シリンダＢのピストン１が圧
送を開始した状態を示している。すなわち、シリンダＡ
およびシリンダＢの圧送行程が重複した状態である。Next, the operation of the valve device constructed as described above will be described with reference to FIGS. FIG. 1 shows a state in which the piston 1 of the cylinder A has started the pressure feed before the piston 1 of the cylinder A has finished the pressure feed. That is, cylinder A
And the pressure feeding strokes of the cylinder B are overlapped.
【００１１】図１の状態からシリンダＡの圧送が終了す
る点では、リミットスイッチＬＳ２がピストン１を検知
して、ポペット弁５が開き、ピストン１が後退行程に入
る。そして、シリンダＡ内に搬送物が吸入され、同時
に、チャッキ弁３が、シリンダＡの吸入および搬送物の
背圧との相乗効果でシリンダＡの吐出口を閉塞する。
（図２参照）At the point where the pressure feeding of the cylinder A ends from the state of FIG. 1, the limit switch LS2 detects the piston 1, the poppet valve 5 opens, and the piston 1 enters the backward stroke. Then, the conveyed product is sucked into the cylinder A, and at the same time, the check valve 3 closes the discharge port of the cylinder A by the synergistic effect of the suction of the cylinder A and the back pressure of the conveyed product.
(See Figure 2)
【００１２】次に、上述のようにしてピストン１が後退
してシリンダＡが搬送物の吸込を終了した点では、ＬＳ
１がその終了位置のピストン１を検知してシリンダＡが
圧送行程に入り、同時に弁５が閉塞し、前述圧送行程に
あるシリンダＢとシリンダＡとの圧送行程が重複する。
（図３参照）Next, as described above, at the point where the piston 1 retracts and the cylinder A finishes sucking the conveyed object,
When 1 detects the piston 1 at the end position, the cylinder A enters the pressure feeding stroke, and at the same time, the valve 5 is closed, and the pressure feeding strokes of the cylinder B and the cylinder A in the pressure feeding stroke overlap each other.
(See Figure 3)
【００１３】すなわち、シリンダＢの圧送行程の終了前
とシリンダＡの圧送行程の初期とが重複するものであ
り、この状態でシリンダＢが圧送を終了することで、リ
ミットスイッチＬ４がシリンダＢのピストン２を検知し
て、シリンダＢが後退する（吸入行程）に入る。これと
同時にポペット弁６が開き、チャッキ弁４がシリンダＢ
の後退による吸入圧と搬送物の背圧とによってシリンダ
Ｂの吐出口を閉塞する。このとき、シリンダＡは圧送行
程の初期の位置にある。（図４参照）That is, before the end of the pressure-feeding stroke of the cylinder B and the beginning of the pressure-feeding stroke of the cylinder A overlap, the cylinder B finishes the pressure-feeding in this state, and the limit switch L4 causes the piston of the cylinder B to move. When 2 is detected, the cylinder B moves backward (intake stroke). At the same time, the poppet valve 6 opens and the check valve 4 moves to the cylinder B.
The discharge port of the cylinder B is closed by the suction pressure and the back pressure of the conveyed product. At this time, the cylinder A is at the initial position of the pressure feeding stroke. (See Figure 4)
【００１４】上記のようにしてシリンダＢが吸入行程を
終了したところでリミットスイッチＬＳ３がそのピスト
ン２を検知して、シリンダＢが圧送行程に入り、同時に
ポペット弁６が閉塞し、シリンダＡの圧送行程の終了前
とシリンダＢの圧送行程と初期とが重複する。When the cylinder B completes the suction stroke as described above, the limit switch LS3 detects the piston 2, and the cylinder B enters the pressure stroke, and at the same time, the poppet valve 6 is closed and the pressure stroke of the cylinder A. Before the end of, and the pumping stroke of the cylinder B and the initial stage overlap.
【００１５】すなわち、シリンダＡおよびシリンダＢが
上述のように作動して連続的に搬送物を圧送することが
できるものであり、このシリンダＡおよびシリンダＢの
作動させるに当たって、リミットスイッチＬＳ１〜ＬＳ
４を設け、これをポペット弁と連動連結してシリンダＡ
とシリンダＢとの吸入行程を圧送工程よりも時間的に短
縮して、各シリンダの圧送工程の終了前部分と圧送開始
部分とを重複させたので、搬送物が脈動したり、サージ
圧が発生するのを抑制できるものである。That is, the cylinder A and the cylinder B operate as described above to continuously convey the conveyed product under pressure. When the cylinder A and the cylinder B are operated, the limit switches LS1 to LS are used.
Cylinder A is provided by connecting 4 with the poppet valve.
Since the suction stroke between the cylinder B and the cylinder B is shortened in time compared to the pressure feeding process, and the portion before the end of the pressure feeding process of each cylinder and the portion where the pressure feeding is started overlap, the pulsation of the transported object or the surge pressure is generated. It is possible to suppress it.
【００１６】また、この発明に係る装置では、シリンダ
ＡおよびシリンダＢの作動の切換にチャッキ弁３、４を
用い、このチャッキ弁３、４の作動に搬送物の圧送圧力
および吸入圧力を利用するので、従来の圧送物の吸入口
および吐出口に設けた弁機構を制御するものに比較して
構造簡単で安価に製作することができる。Further, in the apparatus according to the present invention, the check valves 3 and 4 are used for switching the operations of the cylinder A and the cylinder B, and the pumping pressure and the suction pressure of the conveyed product are used for the operation of the check valves 3 and 4. Therefore, the structure is simple and the cost can be reduced as compared with the conventional one that controls the valve mechanism provided at the suction port and the discharge port of the pressure-feeding object.
【００１７】図５および図６は、一対の往復シリンダに
よって搬送物が送られる様子を示すグラフであり、縦軸
に圧力、横軸に時間をとっている。図５は、従来装置で
送られる様子を示すもので、シリンダＡ、Ｂの切替時に
搬送物が０となり脈動および大きな背圧が生ずることを
示しており、図６はこの発明に係る装置によるもので、
この脈動および背圧を緩和できることを示している。FIG. 5 and FIG. 6 are graphs showing how the conveyed product is sent by a pair of reciprocating cylinders, in which the vertical axis represents pressure and the horizontal axis represents time. FIG. 5 shows a state where the conventional apparatus is used for feeding. When the cylinders A and B are switched, the conveyed object becomes 0, and pulsation and a large back pressure are generated. FIG. 6 shows the apparatus according to the present invention. so,
It shows that this pulsation and back pressure can be relieved.
【００１８】[0018]
【発明の効果】このように、この発明に係る装置は、複
式の往復シリンダを用いた重粘性物の搬送装置におい
て、その弁操作機構に工夫を施すことによって、この
種、重粘性物の搬送装置で発生した搬送物の脈動や弁切
替時の背圧を緩和することができるものである。As described above, in the apparatus according to the present invention, in a heavy viscous material conveying apparatus using a double-type reciprocating cylinder, a valve operating mechanism is devised to convey a heavy viscous material of this kind. It is possible to relieve the pulsation of a conveyed product generated in the device and the back pressure at the time of valve switching.
【図１】この発明に係る重粘性物の搬送装置における弁
装置の作動状態を示す模式横断平面図である。FIG. 1 is a schematic cross-sectional plan view showing an operating state of a valve device in a heavy viscous material transfer device according to the present invention.
【図２】同じく、他の作動状態を示す模式横断平面図で
ある。FIG. 2 is likewise a schematic cross-sectional plan view showing another operating state.
【図３】同じく、他の作動状態を示す模式横断平面図で
ある。FIG. 3 is likewise a schematic cross-sectional plan view showing another operating state.
【図４】同じく、他の作動状態を示す模式横断平面図で
ある。FIG. 4 is likewise a schematic cross-sectional plan view showing another operating state.
【図５】従来の弁装置による搬送物の搬送状況を示すグ
ラフである。FIG. 5 is a graph showing how a conventional valve device conveys a conveyed object.
【図６】この発明に係る装置による搬送物の搬送状況を
示すグラフである。FIG. 6 is a graph showing a transportation state of a transported object by the device according to the present invention.
１、２ ピストン ３、４ チャッキ弁 ５、６ ポペット弁 Ａ、Ｂ シリンダ ＬＳ１、ＬＳ２、ＬＳ３、ＬＳ４ リミットスイッチ 1, 2 Piston 3, 4 Check valve 5, 6 Poppet valve A, B Cylinder LS1, LS2, LS3, LS4 Limit switch
Claims (1)
的に重粘性物を搬送するようにした装置において、一対
のシリンダＡ、Ｂの搬送物の吐出口にそれぞれチャッキ
弁３、４を、搬送物の吸入口にポペット弁５、６をそれ
ぞれ設けるとともに、各シリンダＡ、Ｂの周辺には、そ
の内部に設けた往復動ピストン１、２の往復動死点近傍
に位置させてその位置にきた往復動ピストンを検知する
ことができるリミットスイッチＬＳ１、ＬＳ２、ＬＳ
３、ＬＳ４を設け、これらリミットスイッチと上記ポペ
ット弁３、４を連動連結して、一方のシリンダＡの往復
動ピストン１が圧送行程終端直前にきたとき、他方のシ
リンダＢの往復動ピストン２が圧送を開始するように
し、同時に、一方のシリンダＡのポペット弁５を開放す
るとともに、他方のシリンダＢのポペット弁６を閉止す
るようにしてなる重粘性物の搬送装置における弁の切替
装置。1. In an apparatus in which a pair of cylinders are alternately operated to continuously convey a heavy viscous substance, check valves 3 and 4 are respectively provided at discharge ports of the conveyed substances of a pair of cylinders A and B, respectively. Poppet valves 5 and 6 are provided at the inlets of the conveyed items, and the cylinders A and B are located near the reciprocating dead centers of the reciprocating pistons 1 and 2 provided inside the cylinders A and B, respectively. Limit switches LS1, LS2, LS that can detect reciprocating pistons
3, LS4 are provided, and the limit switches and the poppet valves 3 and 4 are interlocked and linked, and when the reciprocating piston 1 of one cylinder A comes just before the end of the pumping stroke, the reciprocating piston 2 of the other cylinder B is A valve switching device in a heavy viscous material conveying device, which is configured to start pressure feeding and simultaneously open the poppet valve 5 of one cylinder A and close the poppet valve 6 of the other cylinder B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6069900A JPH07253077A (en) | 1994-03-14 | 1994-03-14 | Changeover device of valve at carrying device of heavily viscous object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6069900A JPH07253077A (en) | 1994-03-14 | 1994-03-14 | Changeover device of valve at carrying device of heavily viscous object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07253077A true JPH07253077A (en) | 1995-10-03 |
Family
ID=13416043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6069900A Pending JPH07253077A (en) | 1994-03-14 | 1994-03-14 | Changeover device of valve at carrying device of heavily viscous object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07253077A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100351332B1 (en) * | 1999-06-17 | 2002-09-09 | 이강국 | Pumping method of contractility mortar |
| JP2011127594A (en) * | 2009-11-18 | 2011-06-30 | Mitsuo Omi | Fluid force-feeding device and flow regulation device |
| CN106917733A (en) * | 2015-12-25 | 2017-07-04 | 罗凤玲 | A kind of power set |
| CN107956666A (en) * | 2018-01-09 | 2018-04-24 | 长沙紫宸科技开发有限公司 | A kind of two-cylinder type sludge pump with discharging sealing switching device |
| CN109356809A (en) * | 2018-11-25 | 2019-02-19 | 邱建红 | A kind of construction concrete pump for preventing concrete from flowing back |
| CN111622915A (en) * | 2020-06-22 | 2020-09-04 | 范凯 | Flat straight-connected concrete ultrahigh-pressure delivery pump |
-
1994
- 1994-03-14 JP JP6069900A patent/JPH07253077A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100351332B1 (en) * | 1999-06-17 | 2002-09-09 | 이강국 | Pumping method of contractility mortar |
| JP2011127594A (en) * | 2009-11-18 | 2011-06-30 | Mitsuo Omi | Fluid force-feeding device and flow regulation device |
| CN106917733A (en) * | 2015-12-25 | 2017-07-04 | 罗凤玲 | A kind of power set |
| CN107956666A (en) * | 2018-01-09 | 2018-04-24 | 长沙紫宸科技开发有限公司 | A kind of two-cylinder type sludge pump with discharging sealing switching device |
| CN109356809A (en) * | 2018-11-25 | 2019-02-19 | 邱建红 | A kind of construction concrete pump for preventing concrete from flowing back |
| CN111622915A (en) * | 2020-06-22 | 2020-09-04 | 范凯 | Flat straight-connected concrete ultrahigh-pressure delivery pump |
| CN111622915B (en) * | 2020-06-22 | 2021-09-24 | 苏州维斯勒姆智能科技有限公司 | Flat straight-connected concrete ultrahigh-pressure delivery pump |
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