JPH0134713Y2 - - Google Patents
Info
- Publication number
- JPH0134713Y2 JPH0134713Y2 JP1982078601U JP7860182U JPH0134713Y2 JP H0134713 Y2 JPH0134713 Y2 JP H0134713Y2 JP 1982078601 U JP1982078601 U JP 1982078601U JP 7860182 U JP7860182 U JP 7860182U JP H0134713 Y2 JPH0134713 Y2 JP H0134713Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- slurry
- time
- switching device
- pipe
- 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 68
- 239000002245 particle Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 239000013505 freshwater Substances 0.000 description 9
- 230000032258 transport Effects 0.000 description 7
- 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
Landscapes
- Jet Pumps And Other Pumps (AREA)
- Pipeline Systems (AREA)
- Accessories For Mixers (AREA)
- Reciprocating Pumps (AREA)
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] [Industrial application field] 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た地上へ輸
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連び出す装置
として用いられる。 The present invention is a device that converts solid particles into a slurry, concentrates it, and transports it continuously.It is a device that transports coal or ore mined at a face to the ground where it has been slurried with water, or when a large hole is dug on the ground surface. It is used as a device to slurry the sediment that comes out with water and take it out.
本考案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。
This invention was first published in Patent No. 1168148 (Special Publication No. 57-55907) for the invention of slurry concentration and transportation method.
obtained. According to this patented method, the pump P,
Since only fresh water flows through P 1 and P 2 , the impeller will not be 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 apparatus shown in FIG. 1 of the present invention, a phenomenon of so-called "sucking" 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 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、供給される固体粒子と清水とを撹拌する
撹拌槽３０を設け、また前記タンク１，２にはそ
れぞれ込入管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１１，１
２，１４，１５を設け、またそれらスラリー逆止
弁１１，１２，１４，１５と前記撹拌槽３０とを
スラリー吸込管３４で連結してスラリー吸込管３
４にはジエツトポンプ駆動用ポンプ３７により駆
動されるジエツトポンプ３５を設けるとともに、
清水管３３との間にバイパス弁４０を備えたバイ
パス管３９を取り付け、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を交互
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とバイパス弁４０
とを連動させて、バイパス弁４０を開く時刻を弁
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、かつバイパス弁４０を閉じる
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 pumps 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, the supplied solid particles and fresh water are A stirring tank 30 for stirring the slurry is provided, and inlet pipes 10 and 13 are connected to the tanks 1 and 2, respectively, and slurry check valves 11 and 1 are connected to the suction pipes 10 and 13, respectively.
2, 14, 15 are provided, and the slurry check valves 11, 12, 14, 15 and the stirring tank 30 are connected by a slurry suction pipe 34.
4 is provided with a jet pump 35 driven by a jet pump driving pump 37,
A bypass pipe 39 equipped with a bypass valve 40 is installed between the fresh water pipe 33, and the valve switching device 16 has switching valves V1, V2, which can be alternately switched between an open position and a closed position at regular time intervals. V3, V4, valve switching device 16 and bypass valve 40
In conjunction with this, the time to open the bypass valve 40 is set to a time slightly earlier than the valve switching start time of the valve switching device 16, and the time to close the bypass valve 40 is set to a time slightly earlier than the valve switching completion time of the valve switching device 16. The feature is that the time is set only slightly later.
本考案は上述の構成を有するから、弁切換開始
時刻t2に先立つてバイパス弁４０を開くのでスラ
リー逆止弁１１，１２を通るのはほとんど清水の
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, since the bypass valve 40 is opened prior to the valve switching start time t2 , almost only fresh water passes through the slurry check valves 11 and 12, and since it does not contain solid particles, the slurry check valve 40 is opened prior to the valve switching start time t2. No jamming occurs when the valve bodies of the valves 11 and 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にスラリー逆止弁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
スラリー逆止弁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１１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 slurry check valve 4 is attached to the discharge pipe 3 that opens into the tank 1.
and 5 are provided and connected to the slurry transport pipe 6. A discharge pipe 7 opening into the second tank 2 is provided with slurry check valves 8 and 9, and is connected to the slurry transport pipe 6. Also, the first tank 1
A suction pipe 10 is connected to the suction pipe 10, and the suction pipe 10 is provided with slurry check valves 11 and 12. 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、ホツパ３１から固体粒子を供
給する固体供給管３２と、清水を供給する清水管
３３が臨んでいる。スラリー吸込管３４の途中に
ジエツトポンプ３５が設けられており、清水管３
３からの分岐管３６に設けられたジエツトポンプ
駆動用ポンプ３７によつてジエツトポンプ３５を
駆動する。３８は吐出管２３と撹拌槽３０とを結
ぶ圧力水管である。清水管３３から分岐してバイ
パス管３９を設け、バイパス管３９にバイパス弁
４０を設ける。ジエツトポンプ３５と撹拌槽３０
の間のスラリー吸込管３４に吸込弁４１を設け
る。 A stirring tank 30 faces a solid supply pipe 32 for supplying solid particles from a hopper 31 and a fresh water pipe 33 for supplying fresh water. A jet pump 35 is provided in the middle of the slurry suction pipe 34, and the fresh water pipe 3
The jet pump 35 is driven by a jet pump driving pump 37 provided in a branch pipe 36 from the jet pump 3. 38 is a pressure water pipe connecting the discharge pipe 23 and the stirring tank 30. A bypass pipe 39 is provided branching off from the fresh water pipe 33, and a bypass valve 40 is provided in the bypass pipe 39. Jet pump 35 and stirring tank 30
A suction valve 41 is provided in the slurry suction pipe 34 between.
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、弁切換装置とバイパ
ス弁４０とは次のように連動せしめられている。
第２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、バイパス弁４０を弁切換開始
時刻t2よりも僅か早い時刻t1に開き、同時にバイ
パス弁４０に連動して吸込弁４１を閉じる。弁切
換完了時刻t3よりも僅か遅れた時刻t4に至り、バ
イパス弁４０が閉じ、吸込弁４１は開く。T1は
バイパス弁４０が開いている時間、T3はバイパ
ス弁４０が閉じている時間、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 bypass valve 40 are linked as follows.
In FIG. 2, t 2 indicates the valve switching start time, and t 3 indicates the valve switching completion time. to close the suction valve 41. At time t4 , which is slightly later than the valve switching completion time t3 , the bypass valve 40 closes and the suction valve 41 opens. T 1 indicates the time during which the bypass valve 40 is open, T 3 indicates the time during which the bypass valve 40 is closed, and T 2 indicates the valve switching time.
上述の構成を有するスラリー濃縮輸送装置の作
用は次のとおりである。最初に弁４１を開き、弁
４０を閉じ、ホツパ３１から固体粒子を供給する
と、固体粒子は撹拌槽３０で撹拌されてスラリー
化され、スラリー吸込管３４を経てタンク内に送
り込まれる。 The operation of the slurry concentrating and transporting device having the above-described configuration is as follows. First, the valve 41 is opened, the valve 40 is closed, and solid particles are supplied from the hopper 31. The solid particles are stirred in the stirring tank 30 to form a slurry, and are sent into the tank through the slurry suction pipe 34.
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１５および１４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
れたスラリーを押出し、濃縮スラリーは吐出管
７、スラリー逆止弁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。 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 15 and 14 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, and 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 sent into the second tank 2 from the discharge side via the discharge pipe 23, the switching valve V 4 , the pipe 21, and the filter 20. This pressure water pushes 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, slurry check valves 8 and 9.
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１２および１１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タンク内に流入し、フイルタ２０
によつてスラリー中の水（作動水）のみが管２
１、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 12 and 11 are closed, stirring tank 3
The slurry from 0 is passed through the slurry check valves 14 and 1.
5 into the second tank and filter 20
Only the water in the slurry (working water) flows through pipe 2.
1. Main pump 22 via switching valve V 3 and suction pipe 24
be sucked into. The working water discharged from the main pump 22 passes through the discharge pipe 23, the switching valve V 2 , and the pipe 19 to the first
The slurry is fed into the tank 1, and the concentrated slurry in the first tank 1 is pushed out and transported through the discharge pipe 3 and the slurry transport pipe 6.
なお、論理的には上述のとおりであるが、試験
の結果、吸込弁４１を省略しても実際上差し支え
ないことが判明した。すなわち、バイパス弁４０
と弁切換装置１６とが連動して作動するように構
成されているところ、バイパス弁４０を開くと、
スラリー吸込管３４の撹拌槽側の管内の流速が遅
くなり、大きい固体粒子は管底に沈澱して動かな
くなるので、固体粒子はスラリー逆止弁１１，１
２等の方へはほとんど移動しなくなる。 Although the logic is as described above, as a result of testing, it has been found that there is no problem in practice even if the suction valve 41 is omitted. That is, the bypass valve 40
When the bypass valve 40 is opened, the valve switching device 16 and the valve switching device 16 are configured to operate in conjunction with each other.
The flow rate in the slurry suction pipe 34 on the stirring tank side becomes slow, and large solid particles settle to the bottom of the pipe and do not move.
It will hardly move towards 2nd class.
本考案は、弁切換装置１６の弁切換開始時刻t2
に先立つてバイパス弁４０が開くのでスラリー逆
止弁１１および１２を通るのは固体粒子をほとん
ど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１２および１１
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
１５および１４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 bypass valve 40 is opened prior to this, only fresh water containing almost 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 that the slurry check valves 12 and 11 are
The valve body is seated on the valve seat, but at this time, no solid particles are caught between the valve body and the valve seat, and the space between the valve body and the valve seat is completely closed. The same applies to the slurry check valves 15 and 14.
第１図はスラリー濃縮輸送装置の全体図、第２
図は切換弁装置とバイパス弁の作動説明図であ
る。
１……第１タンク、２……第２タンク、４，
５，８，９……スラリー逆止弁、１１，１２，１
４，１５……スラリー逆止弁、１６……弁切換装
置、３９……バイパス管、４０……バイパス弁、
４１……吸込弁、V1，V2，V3，V4……切換弁。
Figure 1 is an overall view of the slurry concentration transportation equipment, Figure 2
The figure is an explanatory diagram of the operation of the switching valve device and the bypass valve. 1...First tank, 2...Second tank, 4,
5, 8, 9... Slurry check valve, 11, 12, 1
4, 15...Slurry check valve, 16...Valve switching device, 39...Bypass pipe, 40...Bypass valve,
41...Suction valve, 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、供給
される固体粒子と清水とを撹拌する撹拌槽３０を
設け、また前記タンク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１１，１２，１４，１
５を設け、またそれらスラリー逆止弁１１，１
２，１４，１５と前記撹拌槽３０との間をスラリ
ー吸込管３４で連結してスラリー吸込管３４には
ジエツトポンプ駆動用ポンプ３７により駆動され
るジエツトポンプ３５を設けるとともに、清水管
３３との間にバイパス弁４０を備えたバイパス管
３９を取り付け、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とバイパス弁４０とを連
動させて、バイパス弁４０を開く時刻を弁切換装
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、かつバイパス弁４０を閉じる時刻を
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 the slurry concentration and transportation device that alternately pumps out water from the main pump 22 according to the operation of the main pump 22, a stirring tank 30 is provided to stir the supplied solid particles and clean water, and each of the tanks 1 and 2 has a stirring tank 30. Suction pipes 10 and 13 are connected, and slurry check valves 11, 12, 14, and 1 are installed in these suction pipes 10 and 13, respectively.
5, and these slurry check valves 11, 1
2, 14, 15 and the stirring tank 30 are connected by a slurry suction pipe 34, and a jet pump 35 driven by a jet pump driving pump 37 is installed in the slurry suction pipe 34. A bypass pipe 39 equipped with a bypass valve 40 is attached, and the valve switching device 16 is equipped with switching valves V1, V2, V3, and V4 that are alternately switched between an open position and a closed position at regular time intervals. Then, the valve switching device 16 and the bypass valve 40 are linked, the time to open the bypass valve 40 is set to a time slightly earlier than the valve switching start time of the valve switching device 16, and the time to close the bypass valve 40 is set. A device for preventing jamming of a slurry check valve in a slurry concentrating and transporting device, characterized in that the time is set to a time slightly later than the valve switching completion time of a valve switching device 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7860182U JPS58181070U (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 |
|---|---|---|---|
| JP7860182U JPS58181070U (en) | 1982-05-28 | 1982-05-28 | Slurry check valve jamming prevention device in slurry concentration transportation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58181070U JPS58181070U (en) | 1983-12-03 |
| JPH0134713Y2 true JPH0134713Y2 (en) | 1989-10-23 |
Family
ID=30087806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7860182U Granted JPS58181070U (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) | JPS58181070U (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 JP7860182U patent/JPS58181070U/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 |
|---|---|
| JPS58181070U (en) | 1983-12-03 |
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