JPH0134714Y2 - - Google Patents
Info
- Publication number
- JPH0134714Y2 JPH0134714Y2 JP1982078598U JP7859882U JPH0134714Y2 JP H0134714 Y2 JPH0134714 Y2 JP H0134714Y2 JP 1982078598 U JP1982078598 U JP 1982078598U JP 7859882 U JP7859882 U JP 7859882U JP H0134714 Y2 JPH0134714 Y2 JP H0134714Y2
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- valve
- time
- valve switching
- switching device
- 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.)
- Expired
Links
- 239000002002 slurry Substances 0.000 claims description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007787 solid Substances 0.000 description 22
- 239000002245 particle Substances 0.000 description 17
- 239000013505 freshwater Substances 0.000 description 11
- 230000032258 transport Effects 0.000 description 10
- 238000003756 stirring Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はスラリー濃縮輸送装置の改良に関し、
より具体的にはスラリー濃縮輸送装置におけるス
ラリー逆止弁のかみ込み防止装置に関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to the improvement of a slurry concentration transportation device.
More specifically, the present invention relates to a device for preventing jamming of a slurry check valve in a slurry concentration transportation device.
本考案は固体粒子をスラリー化して濃縮しこれ
を連続的に輸送する装置であり、切羽で採掘した
石炭あるいは鉱石を水でスラリー化して地上へ輸
送する装置、または地表で大きい穴を掘つたとき
に出る土砂類を水でスラリー化して運び出す装置
として用いられる。 This invention is a device that slurries and concentrates solid particles and transports it continuously.It is a device that slurries mined coal or ore with water and transports it to the ground, or when digging a large hole on the ground surface. It is used as a device to slurry the sediment produced by water and transport it.
本考案者はさきにスラリー濃縮輸送法の発明に
ついて特許第1168148号（特公昭57−55907号公
報）を取得した。この特許方法によると、ポンプ
Ｐ，P1，P2の内部を流通するのは清水のみであ
るから、スラリー中の粒子によつてインペラーが
損傷を受けることはない。
The inventor of the present invention previously obtained Patent No. 1168148 (Japanese Patent Publication No. 57-55907) for the invention of the slurry concentration and transportation method. According to this patented method, only fresh water flows through the pumps P, P 1 and P 2 , so that the impellers are not damaged by particles in the slurry.
しかし、前記特許方法を本考案の第１図に示す
装置にそのまま適用すると、スラリー逆止弁にい
わゆる“かみ込み”の現象が起きる。すなわち、
スラリーがスラリー逆止弁１１および１２を通つ
て第１タンク１内に流入していた場合、弁切換装
置が切換えられて主ポンプ２２の吐出圧が第１タ
ンク１内にかかるとスラリー逆止弁１１および１
２は閉じるが、該逆止弁の弁体（図示せず）が閉
じる瞬間に弁体と弁座との間にスラリー中の固体
粒子を挾むと弁体と弁座の間は完全に閉じること
ができないのでかみ込み現象が起きる。
However, if the patented method is directly applied to the device shown in FIG. 1 of the present invention, a so-called "clog" phenomenon occurs in the slurry check valve. That is,
If the slurry is flowing into the first tank 1 through the slurry check valves 11 and 12, when the valve switching device is switched and the discharge pressure of the main pump 22 is applied to the first tank 1, the slurry check valve 11 and 1
2 is closed, but if solid particles in the slurry are sandwiched between the valve body and the valve seat at the moment when the valve body (not shown) of the check valve closes, the space between the valve body and the valve seat will be completely closed. Since this is not possible, a jamming phenomenon occurs.
本考案はそのようなかみ込み現象が起きるのを
防止することを目的とする。 The present invention aims to prevent such a jamming phenomenon from occurring.
本考案に係る、スラリー濃縮輸送装置における
スラリー逆止弁のかみ込み防止装置は、その目的
を達成するものであつて、次のようなものであ
る。すなわち、フイルタ１８，２０を備えた一対
のタンク１，２と弁切換装置１６と主ポンプ２２
とを包含し、タンク１，２内の濃縮スラリーを弁
切換装置１６の作動に応じて主ポンプ２２よりの
作動水で交互に圧出するスラリー濃縮輸送装置に
おいて、固体貯留室３１と清水室３５とからなる
撹拌槽３０を設けて撹拌槽３０には駆動装置によ
り駆動される定量フイーダ３２を設け、前記タン
ク１，２にはそれぞれ吸込管１０，１３を連結し
てそれら吸込管１０，１３にはそれぞれスラリー
逆止弁１１，１２，１４，１５を設け、またそれ
らスラリー逆止弁１１，１２，１４，１５と前記
定量フイーダ３２との間をスラリー吸込管３７で
連結してスラリー吸込管３７にはジエツトポンプ
駆動ポンプ３９により駆動されるジエツトポンプ
３８を設け、更に前記弁切換装置１６は一定の時
間間隔ごとに開の位置と閉の位置とに交互に切り
換えられる切換弁V1，V2，V3，V4を備えたも
のとし、弁切換装置１６と定量フイーダ３２の駆
動装置とを連動させて、定量フイーダ３２の作動
停止時刻を弁切換装置１６の弁切換開始時刻より
わずかだけ早い時刻に設定して、かつ定量フイー
ダ３２の作動再開時刻を弁切換装置１６の弁切換
完了時刻よりわずかだけ遅れた時刻に設定したこ
とを特徴とするものである。
The device for preventing jamming of a slurry check valve in a slurry concentration and transportation device according to the present invention achieves the object, and is as follows. That is, a pair of tanks 1 and 2 equipped with filters 18 and 20, a valve switching device 16, and a main pump 22.
In the slurry concentration transport device, which alternately presses out the concentrated slurry in the tanks 1 and 2 with working water from the main pump 22 according to the operation of the valve switching device 16, which includes a solid storage chamber 31 and a fresh water chamber 35. A stirring tank 30 is provided, and the stirring tank 30 is provided with a quantitative feeder 32 driven by a drive device, and suction pipes 10 and 13 are connected to the tanks 1 and 2, respectively. are provided with slurry check valves 11, 12, 14, and 15, respectively, and these slurry check valves 11, 12, 14, and 15 are connected to the quantitative feeder 32 by a slurry suction pipe 37. is provided with a jet pump 38 driven by a jet pump drive pump 39, and the valve switching device 16 has switching valves V1, V2, V3, V4 which are alternately switched between open and closed positions at regular time intervals. The valve switching device 16 and the drive device for the quantitative feeder 32 are linked to set the operation stop time of the quantitative feeder 32 to a time slightly earlier than the valve switching start time of the valve switching device 16, Moreover, the operation restart time of the quantitative feeder 32 is set to a time slightly later than the valve switching completion time of the valve switching device 16.
本考案は上記の構成を有するから、弁切換開始
時刻t2に先立つて定量フイーダ３２は停止するの
でスラリー逆止弁１１，１２を通るのは清水のみ
となり、固体粒子を含まないからスラリー逆止弁
１１，１２の弁体が弁座に着座する時にかみ込み
が起きない。スラリー逆止弁１４，１５に対する
かみ込み防止についても同様である。
Since the present invention has the above-mentioned configuration, the quantitative feeder 32 is stopped prior to the valve switching start time t2 , so only clean water passes through the slurry check valves 11 and 12, and since it does not contain solid particles, the slurry check valve 32 is stopped. No jamming occurs when the valve bodies of the valves 11, 12 are seated on the valve seats. The same applies to prevention of slurry check valves 14 and 15 from being caught in the slurry.
以下、本考案の一実施例について図面を参照し
つつ説明する。
An embodiment of the present invention will be described below with reference to the drawings.
１は第１タンク、２は第２タンクである。第１
タンク１に開口する吐出管３に吐出逆止弁４およ
び５が設けられており、スラリー輸送管６に接続
される。第２タンク２に開口する吐出管７に吐出
逆止弁８および９が設けられており、スラリー輸
送管６に接続される。また第１タンク１に吸込管
１０が接続され、吸込管１０にスラリー逆止弁１
１および１２が設けられている。第２タンク２に
吸込管１３が接続され、吸込管１３にスラリー逆
止弁１４および１５が設けられている。 1 is a first tank, and 2 is a second tank. 1st
A discharge pipe 3 that opens into the tank 1 is provided with discharge check valves 4 and 5, and is connected to a slurry transport pipe 6. A discharge pipe 7 that opens into the second tank 2 is provided with discharge check valves 8 and 9, and is connected to the slurry transport pipe 6. Further, a suction pipe 10 is connected to the first tank 1, and a slurry check valve 1 is connected to the suction pipe 10.
1 and 12 are provided. A suction pipe 13 is connected to the second tank 2, and the suction pipe 13 is provided with slurry check valves 14 and 15.
１６は弁切換装置で、４個の切換弁V1，V2，
V3、V4を包含し、油圧シリンダ１７の作動によ
り弁の切換えを行う。これらの切換弁は相互に連
動的に構成されており、例えば切換弁V1とV4が
開のときには切換弁V2とV3は閉の位置にあり、
油圧シリンダ１７の作動により切換えられると、
切換弁V1とV4は閉の位置に、切換弁V2とV3は開
の位置になる。タイマ（図示せず）によつて油圧
シリンダ１７の作動が制御され、一定の時間間
隔、例えば数秒間隔、ごとに油圧シリンダ１７の
作動により切換弁が切換えられる。 16 is a valve switching device, which has four switching valves V 1 , V 2 ,
It includes V 3 and V 4 , and the valves are switched by operating the hydraulic cylinder 17. These switching valves are configured to be interlocked with each other; for example, when switching valves V 1 and V 4 are open, switching valves V 2 and V 3 are in the closed position,
When switched by the operation of the hydraulic cylinder 17,
The switching valves V 1 and V 4 are in the closed position, and the switching valves V 2 and V 3 are in the open position. The operation of the hydraulic cylinder 17 is controlled by a timer (not shown), and the switching valve is switched by the operation of the hydraulic cylinder 17 at fixed time intervals, for example, every few seconds.
第１タンク１内にフイルタ１８が設けられ、フ
イルタ１８は管１９を介して切換弁V1およびV2
に接続されている。第２タンク２内にフイルタ２
０が設けられ、フイルタ２０は管２１を介して切
換弁V3およびV4に接続されている。フイルタ１
８および２０はスラリー中の水のみを通過させて
固形粒子を通過させない性質の材料で構成されて
いる。主ポンプ２２の吐出側は吐出管２３によつ
て切換弁V2およびV4に接続され、吸込側は吸込
管２４を介して切換弁V1およびV3に接続されて
いる。 A filter 18 is provided in the first tank 1, and the filter 18 is connected to the switching valves V 1 and V 2 via a pipe 19.
It is connected to the. Filter 2 in the second tank 2
0 is provided, and the filter 20 is connected via a pipe 21 to the switching valves V 3 and V 4 . Filter 1
8 and 20 are made of a material that allows only the water in the slurry to pass through, but not the solid particles. The discharge side of the main pump 22 is connected via a discharge pipe 23 to the switching valves V 2 and V 4 , and the suction side is connected via a suction pipe 24 to the switching valves V 1 and V 3 .
３０は撹拌槽で、固体貯留室３１と清水室３５
から成る。固体貯留室３１は固体粒子を一時貯え
る室であり、その底部に定量フイーダ３２を設け
る。固体粒子はホツパ３３から固体供給管３４を
経て固体貯留室３１に供給される。清水室３５に
清水管３６が接続されており、清水が供給され
る。３７はスラリー吸込管で、途中にジエツトポ
ンプ３８が設けられ、スラリー吸込管３７の一端
は定量フイーダ３２に、他端はスラリー逆止弁１
１および１４に接続されている。３９はジエツト
ポンプ駆動ポンプで、吐出側はジエツトポンプ３
８に、吸込側は清水管３６に接続されている。第
２図および第３図は撹拌槽３０の拡大図である。
定量フイーダ３２としては例えばロータリーフイ
ーダが好適である。Ｍは定量フイーダ３２の駆動
装置、例えばモータである。 30 is a stirring tank, solid storage chamber 31 and fresh water chamber 35
Consists of. The solid storage chamber 31 is a chamber for temporarily storing solid particles, and a quantitative feeder 32 is provided at the bottom thereof. The solid particles are supplied from the hopper 33 to the solid storage chamber 31 via the solid supply pipe 34. A fresh water pipe 36 is connected to the fresh water chamber 35, and fresh water is supplied thereto. 37 is a slurry suction pipe, a jet pump 38 is provided in the middle, one end of the slurry suction pipe 37 is connected to the quantitative feeder 32, and the other end is connected to the slurry check valve 1.
1 and 14. 39 is a jet pump drive pump, and the discharge side is jet pump 3.
8, the suction side is connected to a fresh water pipe 36. 2 and 3 are enlarged views of the stirring tank 30. FIG.
For example, a rotary feeder is suitable as the quantitative feeder 32. M is a driving device for the quantitative feeder 32, for example, a motor.
弁の切換時にスラリー逆止弁にかみ込み現象が
起きるのを防止するために、弁切換装置と定量フ
イーダの駆動装置は次のように連動さしめられて
いる。第４図において、t2は弁切換開始時刻、t3
は弁切換完了時刻を示し、定量フイーダ３２の作
動停止時刻t1を弁切換装置１６の弁切換開始時刻
t2より僅か早い時刻に設定し、かつ定量フイーダ
３２の作動再開時刻t4を弁切換装置１６の弁切換
完了時刻t3より僅か遅れた時刻に設定してある。
図中、T1は定量フイーダの停止時間、T3は定量
フイーダの回転時間（固体粒子供給時間）、T2は
弁切換時間を示す。 In order to prevent the slurry check valve from being jammed when switching the valve, the valve switching device and the metering feeder drive device are linked as follows. In Fig. 4, t 2 is the valve switching start time, t 3
indicates the valve switching completion time, and the operation stop time t1 of the quantitative feeder 32 is the valve switching start time of the valve switching device 16.
It is set at a time slightly earlier than t2 , and the time t4 at which the quantitative feeder 32 resumes operation is set at a time slightly later than the valve switching completion time t3 of the valve switching device 16.
In the figure, T 1 indicates the stop time of the quantitative feeder, T 3 indicates the rotation time (solid particle supply time) of the quantitative feeder, and T 2 indicates the valve switching time.
上記の構成をするスラリー輸送装置の作用は次
のとおりである。固体貯留室３１に貯えられてい
る固体粒子は定量フイーダ３２によつて一定量ず
つ供給される。定量フイーダ３２の下方には、ジ
エツトポンプ３８によつて吸出される清水が流れ
ているので、固体粒子はその清水流の中へ投入さ
れ、スラリー化されて、スラリー吸込管３７を経
てタンク内に送り込まれる。 The operation of the slurry transport device having the above configuration is as follows. The solid particles stored in the solid storage chamber 31 are fed in fixed amounts by a metering feeder 32. Since fresh water sucked out by the jet pump 38 flows below the metering feeder 32, the solid particles are thrown into the fresh water flow, turned into a slurry, and sent into the tank via the slurry suction pipe 37. It will be done.
いま、切換弁V1とV4が開で、切換弁V2とV3が
閉の位置にあるとしよう。その場合には主ポンプ
２２の吐出圧が第２タンク２内にかかつているの
で、スラリー逆止弁１４および１５は閉じてい
る。スラリーはスラリー逆止弁１１および１２を
通つて第１タンク１内に流入する。フイルタ１８
はスラリー中の水（作動水）のみを通過させ、固
体粒子は通過することができないので、固体粒子
は第１タンク１内に残留し、結果的にスラリーは
濃縮化される。作動水はさらに管１９、切換弁
V1、吸込管２４を経て主ポンプ２２に吸込まれ、
吐出側から吐出管２３、切換弁V4、管２１、フ
イルタ２０を経て第２タンク２内に送り込まれ
る。この圧力水は第２タンク２内にある濃縮化さ
れたスラリーを圧出し、濃縮スラリーは吐出管
７、吐出逆止弁８および９を経てスラリー輸送管
６により所定の場所に送られる。このスラリー濃
縮装置の弁切換装置や主ポンプを含む管系中に流
れる作動水には固体粒子が含まれていないので、
各機器は損傷を受けない。 Let's now assume that switching valves V 1 and V 4 are open, and switching valves V 2 and V 3 are in the closed position. In that case, the discharge pressure of the main pump 22 is applied within the second tank 2, so the slurry check valves 14 and 15 are closed. The slurry flows into the first tank 1 through the slurry check valves 11 and 12. Filter 18
allows only the water (working water) in the slurry to pass through, but not the solid particles, so the solid particles remain in the first tank 1, resulting in the slurry being concentrated. The operating water is further supplied through pipe 19 and the switching valve.
V 1 is sucked into the main pump 22 via the suction pipe 24,
It is fed into the second tank 2 from the discharge side via the discharge pipe 23, the switching valve V4 , the pipe 21, and the filter 20. This pressure water presses out the concentrated slurry in the second tank 2, and the concentrated slurry is sent to a predetermined location by the slurry transport pipe 6 via the discharge pipe 7, discharge check valves 8 and 9. The working water flowing through the pipe system including the valve switching device and main pump of this slurry thickener does not contain solid particles.
No equipment will be damaged.
一定時間経過後に油圧シリンダ１７が作動して
切換弁V2とV3が開、切換弁V1とV4が閉の位置に
切換えられると、主ポンプ２２の吐出圧が切換弁
V2、管１９を経て第１タンク１内に加わるので、
スラリー逆止弁１１および１２は閉じ、撹拌槽３
０からのスラリーはスラリー逆止弁１４および１
５を通つて第２タンク２内に流入し、フイルタ２
０によつてスラリー中の水のみが管２１、切換弁
V3、吸込管２４を経て主ポンプ２２に吸込まれ
る。主ポンプ２２から吐出された作動水は吐出管
２３、切換弁V2、管１９を経て第１タンク１内
に送り込まれ、第１タンク１内にある濃縮化され
たスラリーを押出し、吐出管３、スラリー輸送管
６を経て輸送する。 After a certain period of time has elapsed, the hydraulic cylinder 17 is activated and the switching valves V 2 and V 3 are opened, and the switching valves V 1 and V 4 are switched to the closed position, and the discharge pressure of the main pump 22 is changed to the switching valve.
Since V 2 is added to the first tank 1 through the pipe 19,
Slurry check valves 11 and 12 are closed, stirring tank 3
The slurry from 0 is passed through the slurry check valves 14 and 1.
5 into the second tank 2 and passes through the filter 2.
0, only the water in the slurry is connected to the pipe 21 and the switching valve.
V 3 is sucked into the main pump 22 via the suction pipe 24 . The working water discharged from the main pump 22 is sent into the first tank 1 through the discharge pipe 23, the switching valve V2 , and the pipe 19, and pushes out the concentrated slurry in the first tank 1, , the slurry is transported via the slurry transport pipe 6.
弁切換装置１６の切換時において、弁切換開始
時刻t2に先立つて定量フイーダ３２は停止するの
でスラリー逆止弁１１，１２を通るのは固体粒子
を含まない清水のみとなる。 When the valve switching device 16 is switched, the metering feeder 32 is stopped prior to the valve switching start time t2 , so that only fresh water containing no solid particles passes through the slurry check valves 11 and 12.
なお、第２タンク２内の濃縮されたスラリーが
タンク外へ排出された後は吐出管７に設けた吐出
逆止弁８および９を清水のみが流れているから、
弁の切換時に吐出逆止弁８および９が固体粒子を
かみ込むことはない。吐出管３に設けた吐出逆止
弁４および５についても同様である。 Note that after the concentrated slurry in the second tank 2 is discharged to the outside of the tank, only fresh water flows through the discharge check valves 8 and 9 provided in the discharge pipe 7.
The discharge check valves 8 and 9 do not trap solid particles when switching the valves. The same applies to the discharge check valves 4 and 5 provided in the discharge pipe 3.
本考案は、弁切換装置１６の弁切換開始時刻t2
に先立つて定量フイーダ３２が停止するのでスラ
リー逆止弁１１および１２を通るのは固体粒子を
含まない清水のみとなる。弁切換装置１６が切換
えられると第１タンク１内に主ポンプ２２の吐出
圧がかかるのでスラリー逆止弁１１および１２の
弁体は弁座に着座せしめられるが、その際弁体と
弁座の間に固体粒子を挾むことはなく、確実に弁
体と弁座の間は完全に閉じる。スラリー逆止弁１
４および１５についても同様である。
In the present invention, the valve switching start time t 2 of the valve switching device 16
Since the metering feeder 32 is stopped prior to this, only clean water containing no solid particles passes through the slurry check valves 11 and 12. When the valve switching device 16 is switched, the discharge pressure of the main pump 22 is applied in the first tank 1, so the valve bodies of the slurry check valves 11 and 12 are seated on the valve seats. The gap between the valve body and valve seat is completely closed without any solid particles being caught between them. Slurry check valve 1
The same applies to 4 and 15.
第１図はスラリー濃縮輸送装置の全体図、第２
図および第３図は撹拌槽の拡大図、第４図は切換
弁と定量フイーダの作動説明図である。
１……第１タンク、２……第２タンク、４，
５，８，９……吐出逆止弁、１１，１２，１４，
１５……吸込逆止弁、１６……弁切換装置、３２
……定量フイーダ、V1，V2，V3，V4……切換
弁。
Figure 1 is an overall view of the slurry concentration transport equipment, Figure 2
3 and 3 are enlarged views of the stirring tank, and FIG. 4 is an explanatory diagram of the operation of the switching valve and metering feeder. 1...First tank, 2...Second tank, 4,
5, 8, 9...discharge check valve, 11, 12, 14,
15...Suction check valve, 16...Valve switching device, 32
...Quantitative feeder, V1 , V2 , V3 , V4 ...Switching valve.
Claims (1)
２と弁切換装置１６と主ポンプ２２とを包含し、
タンク１，２内の濃縮スラリーを弁切換装置１６
の作動に応じて主ポンプ２２よりの作動水で交互
に圧出するスラリー濃縮輸送装置において、固体
貯留室３１と清水室３５とからなる撹拌槽３０を
設けて撹拌槽３０には駆動装置により駆動される
定量フイーダ３２を設け、前記タンク１，２には
それぞれ吸込管１０，１３を連結してそれら吸込
管１０，１３にはそれぞれスラリー逆止弁１１，
１２，１４，１５を設け、またそれらスラリー逆
止弁１１，１２，１４，１５と前記定量フイーダ
３２との間をスラリー吸込管３７で連結してスラ
リー吸込管３７にはジエツトポンプ駆動ポンプ３
９により駆動されるジエツトポンプ３８を設け、
更に前記弁切換装置１６は一定の時間間隔ごとに
開の位置と閉の位置とに交互に切り換えられる切
換弁V1，V2，V3，V4を備えたものとし、弁切
換装置１６と定量フイーダ３２の駆動装置とを連
動させて、定量フイーダ３２の作動停止時刻を弁
切換装置１６の弁切換開始時刻よりわずかだけ早
い時刻に設定して、かつ定量フイーダ３２の作動
再開時刻を弁切換装置１６の弁切換完了時刻より
わずかだけ遅れた時刻に設定したことを特徴とす
る、スラリー濃縮輸送装置におけるスラリー逆止
弁のかみ込み防止装置。 a pair of tanks 1 equipped with filters 18, 20;
2, a valve switching device 16, and a main pump 22,
The concentrated slurry in the tanks 1 and 2 is transferred to the valve switching device 16.
In this slurry concentration and transportation device, which alternately pumps out water from the main pump 22 in response to the operation of Suction pipes 10 and 13 are connected to the tanks 1 and 2, respectively, and slurry check valves 11 and 13 are connected to the suction pipes 10 and 13, respectively.
12, 14, 15 are provided, and the slurry check valves 11, 12, 14, 15 and the quantitative feeder 32 are connected by a slurry suction pipe 37, and a jet pump driven pump 3 is connected to the slurry suction pipe 37.
A jet pump 38 driven by 9 is provided,
Furthermore, the valve switching device 16 is provided with switching valves V1, V2, V3, and V4 that are alternately switched between an open position and a closed position at regular time intervals, and the valve switching device 16 and the quantitative feeder 32 are connected to each other. The operation stop time of the quantitative feeder 32 is set to a time slightly earlier than the valve switching start time of the valve switching device 16 by interlocking with the drive device, and the operation restart time of the quantitative feeder 32 is set to a time slightly earlier than the valve switching start time of the valve switching device 16. A device for preventing jamming of a slurry check valve in a slurry concentration transportation device, characterized in that the time is set to a time slightly later than the switching completion time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7859882U JPS58181069U (en) | 1982-05-28 | 1982-05-28 | Slurry check valve jamming prevention device in slurry concentration transportation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7859882U JPS58181069U (en) | 1982-05-28 | 1982-05-28 | Slurry check valve jamming prevention device in slurry concentration transportation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58181069U JPS58181069U (en) | 1983-12-03 |
| JPH0134714Y2 true JPH0134714Y2 (en) | 1989-10-23 |
Family
ID=30087803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7859882U Granted JPS58181069U (en) | 1982-05-28 | 1982-05-28 | Slurry check valve jamming prevention device in slurry concentration transportation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58181069U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5454305A (en) * | 1977-10-11 | 1979-04-28 | Koujirou Hamada | Fluid moving apparatus |
-
1982
- 1982-05-28 JP JP7859882U patent/JPS58181069U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5454305A (en) * | 1977-10-11 | 1979-04-28 | Koujirou Hamada | Fluid moving apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58181069U (en) | 1983-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5020858A (en) | Method of and apparatus for forming and transporting mud clogs | |
| US6863807B2 (en) | Method and apparatus for remediation and prevention of fouling of recirculating water systems by detritus and other debris | |
| JPH0134714Y2 (en) | ||
| JPH0134713Y2 (en) | ||
| JPH0227280Y2 (en) | ||
| JP4403126B2 (en) | Polluted mud drainage treatment device and polluted mud waste water treatment system | |
| JPS61140413A (en) | Fishes transfer apparatus | |
| JP2579229B2 (en) | Air pumping method for earth and sand | |
| JPS63139817A (en) | Horizontal type hydraulic hoist | |
| JPH0285427A (en) | Tank change-over method in mud pressure feed device | |
| JPH08290070A (en) | Coal-water slurry producing apparatus and purging method for coarse particle system thereof | |
| US3400983A (en) | Slurry feed pump | |
| JPH01223213A (en) | Grout transfer method | |
| JP2003129464A (en) | Device for feeding solidifying material into sediment | |
| JPH0942200A (en) | Recovery-discharge-feed device for solid-liquid mixture | |
| JPS59179197A (en) | Process and apparatus for treating sludgy mud | |
| JPH03287925A (en) | Device for conveying earth, sand and sludge under pressure | |
| JPS5840159Y2 (en) | shield tunneling machine | |
| JP3865865B2 (en) | Solid-liquid mixed fluid intake / exhaust device | |
| JP3300641B2 (en) | Storage tank for powder | |
| RU2186679C1 (en) | Mixing plant | |
| JPH0645452Y2 (en) | Automatic snow throwing device for snow removal system | |
| JPH0942199A (en) | Recovery-discharge-feed device for solid-liquid mixture | |
| JP4748883B2 (en) | Drainage transfer device | |
| JPH0319997Y2 (en) |