WO1995001498A1 - Füll- und raubventil mit flüssigkeitsrückführung - Google Patents
Füll- und raubventil mit flüssigkeitsrückführung Download PDFInfo
- Publication number
- WO1995001498A1 WO1995001498A1 PCT/DE1994/000730 DE9400730W WO9501498A1 WO 1995001498 A1 WO1995001498 A1 WO 1995001498A1 DE 9400730 W DE9400730 W DE 9400730W WO 9501498 A1 WO9501498 A1 WO 9501498A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- sleeve
- setting
- pressure
- bore
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 title description 31
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 244000062645 predators Species 0.000 claims description 11
- 238000003801 milling Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 210000003128 head Anatomy 0.000 description 14
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
Definitions
- the invention relates to a filling and robbery valve for individual stamp expansion in underground mining and tunneling, which is integrated in the stamp head and on both sides a coupling piece for the setting pistol with a grip groove and locking projection and inside a check valve for setting, a check valve for robbing and a Pressure relief valve for securing the plunger against overload, the valve housing of the pressure relief valve simultaneously representing the piston for the shut-off valve which can be displaced in the bore, which has a sealing attachment which is shaped corresponding to the sealing seat on the inner wall of the housing and which has a the pressure medium is discharged in an environmentally friendly manner onto the coupling piece and can be designed as a suction pump connection.
- Hydraulic individual punches are still used selectively in underground mining and also in tunnel construction, where stepping out and similarly complex frame combinations cannot be used for reasons of space or other reasons in order to secure the mined cavities. For this purpose, they are stretched between hanging and lying or between the sole and the roof. In addition, they are also used in the longwall in the transition area between longwall and line, where they have to be converted one or more times a day due to the daily progress of mining. As before, individual ram expansion is mostly used in semi-steep and steep storage. In particular in the case of the hydraulic stamps to be implemented daily, the hydraulic fluid consisting of a water-oil mixture has hitherto been sprayed into the environment during the robbery and when the individual stamp is moved in.
- a bore is provided in the valve body, which leads the pressure fluid to the rear of the valve housing of the pressure relief valve, so that this is lifted out of the valve seat when the check valve is loaded accordingly.
- Either the pressure fluid must be introduced via a separate setting pistol or it must be ensured in another way that the pressure fluid cannot flow through the valve into the interior of the stem.
- DE-OS 41 40 317.7 shows a filling and robbery valve in which the filler and robbery valve has coupling pieces of the same design on both sides of the housing with a grip groove and locking projection, so that the setting gun can be attached to both sides.
- the setting gun is required once to fill the stamp, for which the check valve is opened accordingly by the inflowing hydraulic fluid.
- the shut-off valve becomes too Opened using the setting gun, for which the valve housing of the pressure relief valve is moved accordingly.
- the setting gun is clamped on the opposite end of the housing.
- a piston which is appropriately sealed, is pressed against the valve housing via the pressure fluid, which in turn then pushes the valve housing in such a way that the shut-off valve is opened and the pressure fluid can escape from the interior of the plunger.
- the valve housing of the pressure relief valve is surrounded by a spring, which is supported on the predatory sleeve or on the corresponding projection and on the corresponding piston.
- the disadvantage here is that the robbery sleeve is designed to be relatively complex, that the pressure fluid must escape laterally from the robbery sleeve when the pressure limiting valve responds, for which purpose corresponding special bores must be provided and that a return spring is needed to hold the piston in to push back his starting position.
- the invention is based on the object of further developing this known robbery and filling valve in such a way that a valve with a simple construction is created which enables safe seating and also hydraulic robbery.
- the problem is solved according to the invention in that the bore receiving the pressure relief valve or its valve housing acting as a piston and the grommet of the setting gun in the predator sleeve in the region of the valve housing attachment and the grommet is sealed by means of sealing rings, that the inner bore of the grommet is sealed directly is directed towards the head of the valve housing and is widened at the end and that the inner bore of the grommet of the hose connection has lateral widenings at the free end.
- the pressure medium can penetrate into the spring chamber of the pressure limiting valve through the outlet bores, but without being able to pass through the valve piston. This takes over the function of a check valve since it cannot move in via the O-ring, so that the sealing effect is retained in any case.
- the bore in the guide does not permit further displacement in this direction.
- the sealing cap of the shut-off valve which at the same time surrounds the non-return valve for setting, is pushed into the corresponding inner bore or onto the inner bore of the setting sleeve, without backflow occurring here, since the inner bore of the spout is free End milling extensions on the side.
- the sealing cap can therefore not accidentally close the inner bore if the check valve is opened accordingly. In this way, an even and safe operation of the filling and robbery valve is ensured even if a liquid return is carried out in the manner described.
- the bore on the valve housing attachment is designed to correspond to the valve housing and that the associated sealing ring is arranged in a groove formed in the valve housing.
- This groove embedded in the valve housing can accommodate an optimally shaped and effective sealing ring, so that the part lying behind in the direction of movement of the valve housing cannot be impaired by the pressure fluid causing the valve housing to move. If this were the case, pressure fluid would ultimately flow back into the plunger even when robbed, which is precisely what is to be prevented.
- the sealing is achieved because the valve housing and the corresponding bore are so matched to one another that, although displacement of the valve housing is possible, an effective sealing via the sealing ring is ensured on the other hand.
- a further expedient embodiment provides that the robber sleeve for receiving the sealing ring has a groove on the end of the bore opposite the valve housing attachment, so that the sealing ring is arranged sealingly between the robber sleeve and the grommet.
- the pressure medium released when the pressure limiting valve responds must be able to escape as freely as possible, which is possible according to the invention in that the bore at the end opposite the valve housing extension is widened to give a small annular gap which ends at the predator sleeve opening or merges into it . Because of this design of the annular gap, it is possible to use the radial bores provided in particular to the side of the valve housing and in the head region thereof as discharge bores of the pressure medium, because this pressure medium can flow out from there in the direction of the predator sleeve opening without to be significantly disabled.
- the predator sleeve and setting sleeve are screwed into the corresponding recess in the stamping head, so that they are effectively fixed.
- the one-piece design of the robber sleeve and the coupling piece also results in a simpler assembly.
- Another expedient training provides that the inner bores of both spouts are equipped with lateral enlargement cuts.
- This special training has the advantage that the individual parts are aligned. especially the grommets, so that they can also be easily replaced if necessary, since they not only have the lateral extension millings, but also each have a hexagon, so that the connection to the setting gun on the one hand or the hose connection on the other hand is possible without any problems ⁇ is.
- the hexagon is provided in the transition area between the extension and the gun housing or hose connection, so that the spouts are identical in this area too.
- the hexagon merges into the expansion millings, so that when the valve responds, ie during robbery, the water can easily flow past the sealing cap without the drainage or suction being hindered.
- a bulge is provided in the cover plate of the piston, so that there is a channel-shaped design around the pushed-through robbery and setting valve.
- the inflow or outflow holes are provided, which enable the filling and emptying of the respective individual stamp.
- the setting sleeve is equipped with radial bores which are formed at the level of the return spring. These radial bores and thus the outflow and outflow bores thus lie exactly in the region of the bulges of the punch head described.
- the suction pump connection is connected via a short hose without pressure to a transportable container to which a pump which can be switched via a float and which is connected to the return system is assigned.
- the pressure medium thus flows without pressure through the hose into the container until the float has reached a certain height and then switches the pump, which ensures that the "former" pressure medium is passed back to the return system in a usable manner.
- An expedient design provides that the container has 10-20 1 storage volume or is stationary and has a volume of 10-100 1.
- the container with 10 - 20 1 storage volume can easily be taken from one stamp to the other, so that the container is taken from one stamp or group of stamps to the other with the setting pistol, without a permanent space requirement and thus an input narrowing of the workspace, which is not exactly voluminous anyway.
- larger stamp units are to be operated at the same time, it can be advantageous if, as provided, a correspondingly larger container is used which then remains assigned to this stamp group. It can of course also have 10 - 100 1 more if necessary, whereby it is usually assigned stamp units with which it can progress step by step.
- the invention provides that the pump is set to overcome the back pressure in the return system. It is generally designed for 40 bar, so that the back pressure can be surely overcome in any case.
- the invention is characterized in particular by the fact that a very simple robbery and filling valve is provided, which, in particular, the blocking valve which is important for robbery can be actuated easily and safely, specifically directly by the pressure fluid.
- a very simple robbery and filling valve is provided, which, in particular, the blocking valve which is important for robbery can be actuated easily and safely, specifically directly by the pressure fluid.
- the hydraulic pressure applied via the pump is thus used both for setting and for robbing.
- An exact response or operation of the setting and robbery valve is thus guaranteed.
- one-piece setting sleeves and robber sleeves can be used and that with regard to the Predator sleeve can be completely dispensed with the previously necessary return springs.
- FIG. 1 shows a section through a hydraulic stamp with a robbery device with an attached setting gun
- Fig. 3 shows a forehead of a spout with the corresponding holes
- the individual stamp shown in FIG. 1 is equipped in the upper part with a combined filling and pirating valve 1.
- This filling and robbery valve 1 is integrated in the stamp head 3 of the individual stamp 2, whereby it connects the interior 4 of the individual stamp 2 with the outside area.
- the filling and pirating valve 1 is provided with radial bores 6 which are formed in the setting sleeve 7 and which allow the pressure fluid from the stamping lines to flow through the filling and pirating valve 1 or through the filling and pirating valve 1 in allow the interior 4.
- the setting sleeve 7 and the robber sleeve 8 are connected to one another via a connecting thread 9, wherein they are fixed in the punch head 3 when screwing into one another.
- a return spring 10 is also provided here, which is supported on the support projection 11 and on the pressure relief valve 12 or its valve housing 13 and which ensures that the pressure relief valve 12 is fixed under tension in the setting sleeve 7 and the robber sleeve 8 or in the hole 30 that penetrates both of them.
- this return spring 10 ensures that the shut-off valve, which is opened during the robbery in order to give the hydraulic fluid the opportunity to flow off via the hose connection, is always securely sealed during the rest of the operation, so that pressure fluid cannot escape here.
- the return spring 10 is supported on the pressure limiting valve 12 in the region of the valve housing attachment 14.
- the robbery sleeve 8 has a coupling piece 17, which is otherwise identical to the coupling piece of the setting sleeve 7.
- the setting gun 19 can be effectively fixed via the latch 18, so that the inner bore 20 is arranged and aligned so that the pressure fluid via the inner bore 20 and the hexagon-21 and when the handle 27 and thus the corresponding valve is actuated the extension 22 can flow precisely onto the head 25 of the valve housing 13.
- Inner bore 20, hexagon 21 and extension 22 are formed in the grommet 26 of the setting pistol 19, with 24 extension millings 23 being provided at the free end, the function of which is further pointed out below.
- a groove 29 is formed in the end 28 opposite the valve housing extension, in which a sealing ring 31 is formed.
- a further sealing ring 32 is provided in the area of the valve housing attachment 14, which rests in a groove 14 formed in the valve housing 13 and which ensures that hydraulic fluid cannot penetrate into the interior 4 of the individual plunger 2 when the valve housing 13 is moved.
- the groove 29 with the sealing ring 31 is formed in the coupling piece 17, so that an effective seal can take place in this area when the grommet 26 is inserted.
- the groove 33 is also provided, in which the sealing ring 32 rests. Since the valve housing 13 and the bore 30 are matched to one another in such a way that only the displacement of the valve housing 13 in the bore 30 is possible, an effective seal is ensured here via the sealing ring 32.
- the check valve which has to be opened during robbing, has the sealing attachment 35 and the sealing seat 36, the sealing cap 38 and the valve housing 13 together with the sealing attachment 35 and sealing seat 36 forming the locking valve 37.
- a sealing ring 39 is additionally provided, by means of which an effective sealing is always guaranteed, since the sealing cap 38 with the sealing ring 39 is pressed into the sealing seat 36, specifically via the return spring 10.
- the sealing seat 36 is formed on the support projection 11.
- the support ring 40 can, if necessary, be inserted into the bore 30 in the setting sleeve 7, so that the seal is effected as described via the sealing attachment 35, sealing seat 36 and sealing cap 38 or sealing ring 39.
- an identical coupling piece 45 with a latch 46 via which the hose connection can be connected to this coupling piece.
- an inner bore 47 with hexagon 48, extension 49 and extension milling 50 is formed in the spout 51.
- the expansion milling 50 which is illustrated in particular with the aid of FIG. 3, ensures that when the shut-off valve of the emerging hydraulic fluid responds, it is reliably discharged via the suction pump connection 52.
- the escaping pressure medium can be safely discharged because an annular gap 55 remains between the valve housing 13 and the wall of the bore 30, via which the pressure medium that flows out of the outlet bore 57 of the pressure limiting valve 12 and the filling and Leaves robbery valve 1 via the predator sleeve opening 56, is not hindered.
- suction pump connection 52 Since a suction pump connection 52 is provided here, a rapid retraction of the stamp head is ensured.
- suction pump connection 52 is actually incorrect.
- An approximately five to ten meter long hose 62 is connected to the suction pump connection 52, to which an approximately 15 liter container 63 is coupled.
- the pressure medium flows from the individual stamp 2 back into this container 63 without pressure.
- the container 63 receives a pump 65 which can be switched by a float 64 and which in turn presses the "former" pressure medium back into the return system 66 against the back pressure.
- the diagram according to FIG. 4 correspondingly illustrates this.
- the pump 65 can accordingly be set up to approximately 40 bar.
- the container 63 can be assigned to several punches 2 or it is coupled to the setting gun 19 and carried accordingly, which is possible in particular in the case of the small containers of approximately 10 1. In the case of the embodiment carried along, the volume may even be reduced, in contrast, in the case of a stationary version of the container 63, the volume may be increased accordingly.
- the selected cross sections ensure that pressure fluid can act reliably on the valve housing 13 from the gun housing 59 via the transition region 58.
- a locomotive core of the setting pistol is not to be feared; rather, it is also possible to work with larger pressures without the risk of failure.
- the above description clarifies the effect of the check valve.
- the pressure limiting valve 12 integrated in the stamp head 3 responds during use of the individual stamp when the interior 4 of the individual stamp comes under extreme pressure due to any circumstances. Then pressure is exerted via the radial bores 6 on the pressure limiting valve, which releases pressure fluid via the individual parts (not shown here) at the predetermined time or pressure level, which can then flow out via the annular gap 55 and the predator sleeve opening 56. If such an individual stamp 2 is now to be filled, it is simply necessary to fix the setting gun on the opposite side, ie on the setting sleeve 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU69940/94A AU680662B2 (en) | 1993-06-30 | 1994-06-27 | Filling and recovery valve with fluid return |
PL94312215A PL174155B1 (pl) | 1993-06-30 | 1994-06-27 | Zawór do napełniania i rabowania z układem do zawracania cieczy |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4321721 | 1993-06-30 | ||
DEP4321721.4 | 1993-06-30 | ||
DE4322912A DE4322912C2 (de) | 1993-06-30 | 1993-07-09 | Füll- und Raubventil mit Flüssigkeitsrückführung für den im untertägigen Berg- und Tunnelbau im Einsatz befindlichen Einzelstempelausbau |
DEP4322912.3 | 1993-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995001498A1 true WO1995001498A1 (de) | 1995-01-12 |
Family
ID=25927252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/000730 WO1995001498A1 (de) | 1993-06-30 | 1994-06-27 | Füll- und raubventil mit flüssigkeitsrückführung |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU680662B2 (de) |
CZ (1) | CZ284598B6 (de) |
PL (1) | PL174155B1 (de) |
WO (1) | WO1995001498A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5858960A (en) * | 1995-08-25 | 1999-01-12 | Lever Brothers Company, Division Of Conopco, Inc. | Fabric softening composition |
US7073353B2 (en) | 2001-03-26 | 2006-07-11 | Hans Peter Noack | Production of mineral wool |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4140317A1 (de) * | 1991-12-06 | 1993-06-09 | Richard Voss Grubenausbau Gmbh, 5840 Schwerte, De | Hydraulischer einzelstempel mit fuell-/raubventil und druckfluessigkeitsrueckfuehrung |
-
1994
- 1994-06-27 WO PCT/DE1994/000730 patent/WO1995001498A1/de active IP Right Grant
- 1994-06-27 AU AU69940/94A patent/AU680662B2/en not_active Ceased
- 1994-06-27 CZ CZ953363A patent/CZ284598B6/cs unknown
- 1994-06-27 PL PL94312215A patent/PL174155B1/pl unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4140317A1 (de) * | 1991-12-06 | 1993-06-09 | Richard Voss Grubenausbau Gmbh, 5840 Schwerte, De | Hydraulischer einzelstempel mit fuell-/raubventil und druckfluessigkeitsrueckfuehrung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5858960A (en) * | 1995-08-25 | 1999-01-12 | Lever Brothers Company, Division Of Conopco, Inc. | Fabric softening composition |
US7073353B2 (en) | 2001-03-26 | 2006-07-11 | Hans Peter Noack | Production of mineral wool |
Also Published As
Publication number | Publication date |
---|---|
CZ336395A3 (en) | 1997-02-12 |
AU6994094A (en) | 1995-01-24 |
CZ284598B6 (cs) | 1999-01-13 |
AU680662B2 (en) | 1997-08-07 |
PL312215A1 (en) | 1996-04-01 |
PL174155B1 (pl) | 1998-06-30 |
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