CN101925720A - Injection spigot - Google Patents

Abstract

The present invention relates to a kind of injection spigot (24), the conveying separately at least a first that is suitable in particular for the injection drilling rod carries component and a kind of second to carry the injection spigot (24) of the injection head of component, wherein, injection spigot (24) has a housing (34), this housing forms an internal cavities, this cavity has at least one flow export that is used to flow out the first and second conveying components, advise for advantageously expanding, at least one second specified fracture position (37) that the wall of described housing (34) has at least one first specified fracture position (35) and is separated by with the described first specified fracture position, the described first specified fracture position is used for being formed for first and carries first inlet (36) of component under pressure-loaded, the described second specified fracture position is used for being formed for second and carries second inlet (38) of component under pressure-loaded.The invention still further relates to a kind of injection head of injecting drilling rod that is used to hole and push, wherein, in described injection head, insert an injection spigot (24).

Description

Injection spigot

Technical field

The present invention relates to a kind of injection spigot, be preferred for injecting the injection spigot that the injection head of component and a kind of second conveying component is carried in conveying separately at least a first that is suitable for of drilling rod, wherein, injection spigot has a housing, this housing forms an internal cavities, and this cavity has at least one flow export that is used to flow out the first and second conveying components.

Background technology

The injection head of described type is open by DE102007008966A1 in the prior art.Described in the document, this injection head is particularly useful for so-called self-drilling injection drilling rod and holes in treating stable substrate, rock stratum etc. and push.This known injection drilling rod itself can have for example special drill bit at its point, and has and run through its injection canal longitudinally, and this injection canal leads in one or more flow exports at preceding rod end usually.In boring procedure, can under the situation of pressure-loaded, preferably carry scouring media, for example air or water by injection canal to boring.In order to push the injection drilling rod in the boring, can be by syringe pipe and injection canal to boring gap perfusion pressing materials around the injection drilling rod.Syringe pipe is corresponding to be used to carry irrigation (for example water) or pressing materials according to operation.Especially so-called bi-component synthetic resin is suitable as pressing materials, and its a kind of component is resin (a for example water glass), and another kind of component can be a kind of hardener.For realizing the only just sclerosis mutually in boring of two kinds of components, these components are transported to injection head separately, and are just joining mutually with injection drilling rod part that link to each other, that lose.In DE102007008966A1, this part that loses is so-called flushing nut, and it is screwed into inner part by the external screw thread that can rotate easily and is tightened on the drilling rod by the external screw thread that relative difficult is rotated.In injection after drilling rod pierces and push,, wherein, because the different power of back-outing, shift out in the part internally and keep being tightened on the drilling rod as the flushing nut of the part that loses for unloading the rotation direction reversed that syringe pipe drives drill bit.Above-mentioned explanation is interpreted as, and employed notion syringe pipe is meant a kind of like this device, and it not only is used for flushing hole, and is used for extruded hole.For follow-up application, can provide another injection drilling rod for injection head, (being the form with magazine in case of necessity) tightened another flushing nut on the end of this injection drilling rod.Known flushing nut forms a cavity in inside, and have and second inflow entrance, this first-class inlet is connected and is used for carrying specially the delivery conduit of first component, this second inflow entrance is connected the delivery conduit that is used to carry second component, and the conducting that therefore inner cavity forms delivery conduit connects.Inlet is configured to the structure in hole.For preventing to leak, in the cannelure adjacent, set the O-ring seals that places this groove with the hole.In view of this, known flushing nut also is used for the moment of torsion transmission, but this flushing nut must be made by the enough materials of intensity.Especially be incorporated into this, the manufacturing of this member is proved to be relative about various holes, seal groove and thread type and expends, and wherein can not be lower than certain minimum dimension in addition, because drilling rod must be screwed in the flushing nut.When using known flushing nut, be not precluded within independent injection delivery groups and assign to after flushing nut and the injection drilling rod and then disconnect component and carry or interrupt pressure, the certain backflow of component can occur carrying from the flushing nut.

Summary of the invention

Under this background, technical problem to be solved by this invention is, advantageously further expands the injection spigot of the described type of beginning, makes that especially aforementioned possible shortcoming is avoided as far as possible.

According to the present invention, this technical problem at first and mainly solves in conjunction with this feature, promptly, the wall of housing have at least one first specified fracture position and with separately at least one of the first specified fracture position second specified fracture position, the described first specified fracture position is used for being formed for first and carries first inlet of component under pressure-loaded, the described second specified fracture position is used for being formed for second and carries second inlet of component under pressure-loaded.In the present invention, the specified fracture position of notion is answered interpreted in its broadest sense, ie, and comprises that about how much point-like, wire or planar extension may with being extended with meaning.The present invention is also included within its so basic design, promptly, the shell wall of injection spigot at first has local weak location in specific shell position for preparing inlet to a certain extent, preferred wall thickness reduce and/or limits location boundary, for example form the point-like or the wire breach at the edge of designed inlet, and the preparation of inlet or release only could realize under certain pressure-loaded.As following detailed description, can realize in this way making with operation technique on advantage.Be that at first inlet is fully or at least basically sealing before pressure-loaded, especially prevented damage before using injection spigot and dirty.Be preferably designed for, the first and second specified fracture positions are arranged on to be compared in the wall zone that adjacent wall zone wall thickness reduces.Especially work as wall thickness and only be reduced to such (even may be very little) wall thickness, breach promptly is not set, can simplify manufacturing.A kind of suitable structure is, that the housing of injection spigot has is rotational symmetric basically, preferred columniform basically wall, and the one longitudinal end is provided with and is used for flowing out the flow export of carrying component towards the injection drilling rod.On the longitudinal end relative with flow export, injection spigot can have an end wall, at this end wall the specified fracture position that at least one is used for first inlet is set.Be designed in a kind of preferred form of implementation, the specified fracture position design that is used for first inlet is in the wall zone at a circular edge, and its wall thickness preferably reduces from outside to inside radially symmetrically and especially radially linearly.At this, if wall thickness reduces towards central point, then there is the specified fracture position of point-like, because the pressure-loaded that the conveying component of carrying by first delivery conduit causes, at first in this specified fracture position fracture, and then with further tearing that pressure enters the mouth relevantly.Be used for second so-called second inlet of carrying components preferably about one or more, for this reason around the cylindrical wall of injection spigot relative configurations one or more, preferred two at circumferential relative specified fracture position.

At this preferably, be used for being arranged on the wall zone circular edge, that have the wall thickness that more adjacent wall zone reduces suddenly every the one or more specified fracture position of one second inlet, its wall thickness vertically reduces towards its longitudinal end with flow export along injection spigot, preferably successively decreases in the direction linearly.For realizing having the wall zone of the wall thickness that reduces suddenly, a recess that roughly forms dish type can be set in having the wall of relatively thick.Preferred specified fracture position is positioned at such position, has the wall thickness of minimum owing to selected geometry in this position.After breaking in this position, can be from this, especially the wall thickness transition of the direction that increases along the wall thickness in the wall zone that reduces towards wall thickness occurs further tearing according to the size of pressure-loaded, wherein, tears the edge contour that shape has been stipulated inlet.What the certain deviation restriction that descends to pressure by slight crack that has existed and the wall zone of tearing was torn usually further develops.The part of slight crack that do not have in the end in the wall zone that wall thickness reduces is born fastness function, and the function of flexure hinge is also arranged under the situation of the material of elastically deformable, is hinged on this flexure hinge wall portion section of tearing such as flap valve sample.When elasticity is enough, obtained such advantage, that is, interrupted at pressure, just especially when the conveying of carrying component finishes, flap valve press at bar process latter end resilience automatically get back to its initial position, therefore sealing inlet once more basically.(under the situation in cardiac valves) prevented backflow in this way, especially prevents backflow at injection head when injection spigot disconnects.In the present invention, in wall that wall thickness reduces zone and in adjacent thicker relatively wall zone, wall thickness can change in wide value scope or proportion.Be preferably designed for, promptly, be useful in design on the wall zone specified fracture position, that wall thickness reduces of second inlet, maximum wall thickness for many times of the wall thickness of the minimum of this appearance, be preferably two to four times, and the thickest in the wall zone that this wall thickness reduces is less than the wall thickness in the wall zone around the described disc portion, preferably its half or about 1/3rd.Also preferably, injection spigot is made of plastics in the present invention, is especially made by polyamide.In this article also preferably, injection spigot is configured to plastic injection piece or makes in plastic injection-moulded method.

A kind of suitable expansion scheme is, the rear portion longitudinal region of the cylindrical wall of injection spigot in the wall zone that its wall thickness that is equipped with second inlet reduces has a closure in the outside cannelure.Can will carry the inlet flow of component to be distributed to the inlet that is positioned on the circumference equably by this cannelure.Especially when being fabricated to plastic injection piece, there is such possibility in simple mode, that is, the cylindrical wall of injection spigot be used for anterior longitudinal region between the specified fracture position of second entrance and exit have in the outside one or more longitudinally separately and at circumferential extend, integrated annular projection.This anterior longitudinal region can be used for injection spigot is inserted the injection canal (especially in the passage broadening part) of injection drilling rod.Before the notion and back or front side and dorsal part relate to the direction of feed of bar when boring.Under the situation that diameter is coordinated rightly mutually, rib has certain deformation when inserting, and to prevent that injection spigot from supporting from the form of bar extraction afterwards, makes it possible to realize wishing high axial confining force.As an alternative or combination, have such possibility, that is, the cylindrical wall of injection spigot have in the both sides of the cannelure of having mentioned each one circumferential closure, around, outstanding and integrated annular protuberance.At the corresponding universal time coordinated of diameter, two annular protuberances are the experience certain deformation when injection spigot inserts in the injection head groove of design for it or be inserted in the rotating inner part of injection head, makes annular projection play seal.

According to aforesaid design, the known flushing nut of junction is by substituting by injection spigot of the present invention first therein for two kinds of resin Compositions, and this injection spigot can be made relatively inexpensively.At this, it especially can be to have the seal that integrates and the prefabricated injected polyamide components of flap valve.In order to use, injection spigot is arranged in the end of injecting drilling rod, preferably be arranged on before the static mixer that is arranged in case of necessity wherein.Compare traditional flushing nut advantage and be, be not that drilling rod is screwed into the flushing nut, but injection spigot can be inserted in the drilling rod.By therefore possible miniaturization of injection spigot, compare the known flushing nut that processing expends and realized big cost advantage.Insertion state at injection spigot, may increase axial confining force as described above in the possible circumferential rib of its preceding longitudinal region, therefore this confining force preferably is chosen as greater than the axial confining force between syringe pipe inner part and the injection spigot, make injection spigot together from syringe pipe, be extracted vertically automatically, and can be used as the parts that lose and remain on the bar with being tightly connected simultaneously on injection drilling rod reliable in function ground when syringe pipe is back-outed.Especially consider owing to be preferably used as parts and so the required number of spare parts that loses by the cost advantage that the present invention realizes.

Description of drawings

The accompanying drawing that following reference shows by the preferred implementing form of injection spigot of the present invention and advantageous applications thereof describes the present invention in detail.Shown in the drawings:

Fig. 1 is by first kind of form of implementation, by the longitudinal sectional drawing of injection spigot of the present invention, and the application of preferred injection head after extruding injection drilling rod;

Fig. 2 is a device shown in Figure 1, yet is at injection spigot and injection drilling rod after separating;

Fig. 3 is the sectional view along the hatching III-III among Fig. 2;

Fig. 4 is the longitudinal sectional view along the hatching IV-IV among Fig. 2;

Fig. 5 is the three-dimensional view of device shown in Figure 2;

Fig. 6 is the injection spigot shown in Figure 1 that is inserted in the injection drilling rod, and view shortens by means of interrupting;

Fig. 7 is the biopsy cavity marker devices enlarged drawing of the details VII of injection spigot in Fig. 1, and wherein inlet is opened;

Fig. 8 is a device shown in Figure 7, yet has the still new injection spigot of sealing of inlet;

Fig. 9 be shown in Figure 1, in the end of the extruded injection drilling rod of injection head after injection spigot is thrown off;

Figure 10 is the three-dimensional view of injection spigot shown in Figure 1, however corresponding amplification, and

Figure 11 is the longitudinal sectional view of injection spigot shown in Figure 1, same corresponding amplification.

The specific embodiment

Referring to figs. 1 through first kind preferred form of implementation and with it the coefficient parts of Figure 10 explanation by injection head 1 of the present invention.Injection head has syringe pipe 2, and this syringe pipe comprises that a shell 3 and is contained in this shell the inner part 4 that can rotate with respect to longitudinal axis A.First washing ring 5 belongs to shell 3, be provided with first in its outside and carry joint 6, be used to carry the first conveying component that is preferably fluid, with second washing ring 7, second washing ring and first washing ring 5 longitudinally L (just along longitudinal axis A) are axially fixing at intervals, and externally have second and carry joint 8, be used for carrying separately the another kind of conveying component that is preferably fluid.Inner part 4 has joint 9 at dorsal part, and this laced belt is useful on the receiving hole 10 that pivoted configuration is undertaken on the link 11 of the brill driver 12 that its front portion is shown in dotted line ordinatedly.Inner part has the screwed hole 17 (seeing Fig. 2 and 4) that is equipped with the internal thread 16 that matches with the bar screw thread in the front side, it is as the interface unit of the drilling rod 14 (also referring to Fig. 6) that is connected with outside bar screw thread 13.Therefore, the screwed hole 17 that has an internal thread 16 is the interface units that are used to be connected with the drilling rod 14 of corresponding external crossbar screw thread 13.Be noted that the rearmost drilling rod 14 that only shows injection drilling rod 15 in the accompanying drawings respectively, that is, but its also can known mode itself have when needed a plurality of, for example by screw thread-be coupled the drilling rod that nut connects, and especially have drill bit at point.As especially by Fig. 1, Fig. 7 and shown in Figure 8, rotating inner part 4 within it portion have with first carry first delivery conduit 18 that joint 6 is connected with four at circumferential each 1/4th enclose and second delivery conduit 19 that be connected with second interfacing conveyor 8 at interval.First delivery conduit is made of hole 20 and two radial holes 21 that radially extend to the surface from its rear end in vertically L center extension.First and second carrier pipes 18,19 point to its public conducting in the internal cavities 23 of injection spigot 24 and connect 22.Injection spigot (referring to Fig. 7 and 8) with the longitudinal region 25 of its back insert in the axially-extending portion that is arranged on screwed hole 17, respective cross section is dwindled and columniform basically groove 26 in, and the insertion of frictional engagement ground is screwed in the channel expansion 28 of injection canal 29 of drilling rod 14 of screwed hole 17 in the zone of its preceding longitudinal region 27.What be used to wish first carries the conduit of component can be connected first to carry joint 6, and this first delivery groups is divided via cannelure 31, first delivery conduit 18 in first washing ring 5 and be arranged on spring one way stop peturn valve 30 catheter end, that open when discharge pressure is enough and is transported to injection spigot 24.The conduit that is used for the conveying component of another hope can be connected second and carry joint 8, and this another carry that component and first carries that component separates pass through second washing ring 7 interior cannelure 33, second delivery conduit 19 and the pressure one way stop peturn valve of opening under enough big discharge pressure 32 is transported to injection spigot 24.As shown in Figure 8, that the housing 34 of injection spigot 24 has is ready, be used to form be used for first carry component first inlet, 36 (see figure 7)s the first specified fracture position 35 and therewith separately, respectively be used to form two second specified fracture positions 37 of one second inlet 38 (see figure 7)s.Described specified fracture position is configured in respectively in the wall zone 39,40 that has the wall thickness that the wall zone around comparing reduces, and is arranged in the zone of minimum wall thickness (MINI W.) respectively at this.At this, the specified fracture position of notion is answered interpreted in its broadest sense, ie, and on geometry, comprise point-like, the possibility of wire or planar extension.As shown in Figure 8, used a new injection spigot, its specified fracture position does not at first also break, and that is to say that the inlet 36,38 that correspondence sets still is what seal.Specified fracture position 35,37 coordinate with the common adjustable discharge pressure when the injection spigot head move of carrying component respectively in this wise mutually in its shape and size (especially about selected minimum wall thickness (MINI W.)), make as shown in Figure 7, described each specified fracture position breaks when suitable pressure load, therefore each enters the mouth 36,38 are opened, and also distinguish independent delivery groups at this and divide in the inflow internal cavities 23.Only in this cavity 23, just 22 two kinds of components of carrying separately just come in contact (for example resin and hardener) in the conducting junction.By shown in Figure 11, internal cavities 23 has the flow exports 41 that are used for towards the injection drilling rod 15 common outflow first and second conveying components as especially.

As mentioned above, illustrated among Fig. 1 (only part shown in) injection drilling rod 15 after (for example rock stratum) wall 44 internal drillings and by means of pressing materials after the 45 extruding injection drilling rods 15 of formed hole, this pressing materials passes through two kinds by carrying joint 6, the mixing of the 8 conveying components of carrying forms, and hardens in the hole then.Because the injustice in bar screw thread 13 and the hole wall forms effective axially the shearing by the pressing materials 46 that mixes the sclerosis of back short time and connects.At this, in order better to represent details, pressing materials 46 is only shown in the hole 45, just not shown in syringe pipe and the injection drilling rod in Fig. 1.In Fig. 1, injection drilling rod 15 gets into the degree of depth of wishing in the wall, wherein base plate 47 (so-called flange) is compressed by the cushion pad 49 that spherical end surface nut 48 is oppositely arranged on wall 44 fronts, and this spherical end surface nut tightens to the axial stop of rotating relatively inner part 4 always by means of internal thread.

According to pressing method of the present invention, this method is preferred about application shown in Figure 1 especially, be considered to advantageously, for preparing boring procedure, at first to being provided at unit shown in Fig. 6, preassembled, that form by at least one drilling rod 14 and an injection spigot 24 to syringe pipe shown in Figure 5, and be connected on this unit at Fig. 2.For making described unit, at first will be own known, so-called first static mixer 50 with around, especially independent jacket element 52 inserts in the injection canal 29, and in injection canal with jacket element 51 with appropriate mode axial restraint, wherein, static mixer has the so-called block piece 51 of the spiral of one after the other arranging before and after a plurality of L longitudinally, described jacket element can be pipe or flexible pipe, make the flowing pressure of the conveying component in its relative injection canal 29 form to flow through, the obstruction that axial restraint is outstanding, various delivery groups divide generation strong mixing when flowing through.In selected embodiment, the injection spigot that illustrates separately in Fig. 1 24 is then with the passage enlarged portion 28 adjacent with static mixer 50 of its preceding longitudinal region 27 (flow export 41 be arranged in its distolateral) insertion drilling rod 41.At this, longitudinal region 28 be processed into columniform passage enlarged portion 28 since mutually the diameter of coordinating form first and insert to press and be connected 53, this connection only just can separate when applying higher, so-called first axial force once more.Injection spigot 24 rotates symmetry in this example and the columniform basically outside reduces to form axial stop face 54 in the transition region from back longitudinal region 25 to preceding longitudinal region 27 by the cross section that suddenlys change, and this stop surface forms axial stop with the end face 55 of drilling rod 14.Inner cavity 23 is designed to cylindrical basically.Wherein be provided with second static mixer 56, and face toward the axial stop insertion of the dorsal part of annular convex shoulder 73 formation of passing through cavity 23.At this, notion dorsal part and front side (or the back is with preceding) is again the direction of feed of relative drilling rod when holing.In this way, second static mixer 56 is longitudinally fixing in the little movement clearance that allows in this example of L, and not its circumferentially need be connected (although also this connection can be set additionally) of injection spigot 24.Because annular convex shoulder 73 forms the axial stop of back, thereby the static mixer that moves through axial restraint 50 forward prevents.For boring automatically and extruding operation, pre-assembled is counted with more part in unit shown in Figure 6, and preferably offers at the device shown in Fig. 2 to Fig. 5 magazine-type.For being connected on the injection head 1, tighten to by means of its bar screw thread 13 in the screwed hole 17 of rotating inner part 4 with injection spigot 24 preassembled drilling rods 14, be resisted against on the end of internal thread 16 or the axial stop (this backstop can be positioned at the rear end of injection spigot 24) until its (as shown in Figure 8) and just can not continue to be screwed into.At this, injection spigot 24 longitudinally inserts columniform basically groove 26 (referring to Fig. 2) with the longitudinal region 25 of its back.Selected shape and size like this, make the rear end face 58 (referring to Figure 11) of this injection spigot 24 vertically with insert inner part 4 in compression sleeve 62 and axial restraint therein between elastic one-way flap valve 30 in the passage contact, be used for first enter the mouth 36 the first specified fracture position 35 and be positioned at this rear end face.Also together realized the axial restraint of injection spigot 24 front sides and rear side in this way.In addition, the position shown in amplifying in Fig. 7, Fig. 8 has also guaranteed first inlet 38 (or second specified fracture position 37) relative second delivery conduits 19 or has been axially fixed in the elastic one-way flap valve 32 appropriate location of L longitudinally in second delivery conduit.As shown in the figure, the axial location of cannelure 60 in the wall zone 40 that wall thickness reduces around the outside is positioned on the cylindrical wall 59 of injection spigot 24, and this cannelure is axially concordant with delivery conduit 19.The groove 26 of the back longitudinal region 25 of injection spigot 24 in inner part 4 forms second and inserts pressure connection 61, wherein, can connect 61 so-called second axial forces of transmitting by this and press connection 53 transferable first axial forces less than inserting by first.If after the rotating inner part 4 of injection head 24 or its once more from drilling rod 14 back-out (preferably by boring the rotation direction reversed of driver), because by two axial forces that insert to press connect 53,61 transferable different sizes, injection spigot 24 automatically together internally part 4 extract and can be used as the end that the parts that lose are retained in the injection drilling rod out.In order to arrive (corresponding to Fig. 1) state shown in Fig. 7 from installment state shown in Figure 8, wherein in installment state shown in Figure 8, first and second inlets 35,37 also do not break, just first and second enter the mouth 36,38 still is what seal, by carrying joint 6,8 under pressure, to carry each to carry component respectively, therefore open elastic one- way flap valve 30,32, each is carried the thick wall zone that reduces 39,40 of component extruded wall and specified fracture position 35,37 is broken, therefore enter the mouth and 36,38 be released.In selected example, injection spigot 24 is by plastics polyamide integrally manufactured member in injection moulding process.

Another characteristics that injection head is shown as embodiment are,, have realized a kind of dismountable fixture that is coupled at this link 11 for the transfer torque of brill driver 12 that is.As especially by shown in Fig. 3 and 4, this realizes thus, promptly, there are two retaining elements 64, wherein this retaining element is tension pin 65 in the present example, and inner part 4 has two through holes 66 at interval that are parallel to each other at receiving hole 10 in perpendicular to the cross section Q that vertically L extends, and described through hole is as the installing hole 68 of tension pin, and this tension pin adapts with dismountable being fixedly clamped of tension pin on its diameter.The function that appropriate tension pin can have been bought on market and it is common is known.The diameter D that the lateral spacing a of through hole 66 selects less than the adjacent longitudinal part section 67 of receiving hole 10.This means that at the fixing or clamped condition of tension pin 65, the cross section of receiving hole 10 is compared does not have the state of tension pin 65 to reduce to some extent.In this embodiment, select such one to bore driver 12, its link 11 has a projection 70 in circumferential annular extension at intervals in its connecting portion section 69 back, and its diameter is equivalent to diameter D basically.Projection 70 obtains the meaning of the stop protrusion of form fit effect by dismountable retaining element 64, it is in retaining element 64 radial intersection of vertical protrusion direction (L along the longitudinal) with installment state, and dismountable separation that therefore the longitudinally L shaped shape of formation cooperates under the situation that connects brill driver-link 11 is fixed.In an example shown, bore driver-link 11 and extend the anterior freely vertically connecting portion section 69 of end and be equipped with external screw thread 71 for transfer torque, this external screw thread matches with internal thread 72 in the longitudinal part section that is arranged on receiving hole 10.Realized that by means of aforementioned feature promptly, when the rotation direction of boring driver 12 was reverse for disconnecting from injection drilling rod 15, inner part 4 can not be turned on from boring driver link 11, has therefore guaranteed constant moment of torsion transmission and therefore assurance operation reliably.Bore driver 12 and only throw off from syringe pipe 2 and realize thus, that is, the operation by those skilled in the art's routine of two tension pin 65 66 is shifted out from the hole.Select tension pin 65 in this wise, make tension pin can stand the centrifugal force of appearance when operation and the stress of percussive drilling.

Following with reference to Fig. 6 to Figure 11 detailed description other characteristics by the preferred implementing form that schematically illustrates of injection spigot of the present invention.Especially Figure 10 clearly illustrates, and injection spigot is designed to rotational symmetric basically sleeve member.In conjunction with Figure 11 as seen, be used for the wall zone 39 of the circle of specified fracture position 35 designs on aft bulkhead 58 of first inlet, 36 (see figure 7)s, the linear radially symmetrically from outside to inside sub-fraction that is decreased to the wall thickness of edge side of its wall thickness.Wall thickness especially is decreased to film or membranaceous residual thickness at specified fracture position 35, makes just to occur tearing when less pressure-loaded.At this, Fig. 7 shows first inlet 36 that the tear line of supposition in the wall 39 forms under the situation of specified fracture position 35s starlikely, divides via this inlet input inner chamber 23 by first delivery groups that first delivery conduit 18 is carried.Although the state after the extruding of injection drilling rod has been shown among Fig. 1, in by the enlarged drawing of Fig. 7 for also showing the open position of inlet 36,38 for the purpose of clear, entering the mouth then flexibly carries out the transition to the detent position of wall portion section.Fig. 9 is corresponding to be illustrated, and the wall zone 39,40 that wall thickness reduces makes inlet 36,38 be closed once more basically because the elastic characteristic of employed plastics is automatically recovered shape once more after syringe pipe screws off.For clarity, but in Fig. 9, also show injection spigot 24 and inner injection drilling rod 15, and the pressing materials 46 that wherein also has is not shown.By Figure 10 and Figure 11 as can be known, two wall zones 40 that lay respectively at the circular edge that has the wall thickness that more adjacent wall zone reduces suddenly at circumferential specified fracture position 37 opposed, that be used for each one second inlet 38 (see figure 7)s.And the inwall of cavity 23 extends cylindrically, and the outside in wall zone 40 is designed to flat, and in an acute angle with respect to vertical L at this.Therefore, each wall zone 40 has formed the planar base surface of the diagonally extending of the plate-like recess that forms vertically on cannelure 60 height in shell wall.Stipulated the position of specified fracture position 37 by described shape at the minimum wall thickness (MINI W.) place.These are intersection points towards the section of preceding longitudinal region 27 or flow export 41 of the circular edge line in wall zone 40 and Figure 11.Notion front side or rear side or preceding and back direction of feed when this relative as before bar drill hole.

After specified fracture position 37 is torn, because the part of pressure-loaded circumference along wall zone 40 from this continues to tear.As shown in Figure 7, the tearing part section in wall zone 40 towards intrinsic deflection, and forms the flap valve have flap 76 by pressure-loaded simultaneously, and this flap is hinged on the flexure hinge 77.Flexure hinge is formed by the part in wall zone 40, and this part is not torn owing to its more specified fracture position 37 bigger wall thickness.Figure 10 and Figure 11 also show, and have a plurality of spaced-apart ring-shaped projectioies of L longitudinally or rib 63 in the preceding longitudinal region 27 of columniform wall 59 between specified fracture position 37 and flow export 41 in the outside.On columniform wall 59, respectively be provided with in the both sides of cannelure 60 one circumferential ring-type around, projection and integrated annular relief 78, be used to seal cannelure 60.

All disclosed features () own all are emphasis of the present invention.Therefore, under also having received in the present disclosure of the invention/all the elements of appended priority text (at the copy of first to file), also for this purpose the feature of these texts is merged in the application's the claim.

Claims (17)

1. injection spigot, the conveying separately at least a first that is suitable in particular for the injection drilling rod carries component and a kind of second to carry the injection spigot of the injection head of component, wherein, described injection spigot has a housing, this housing forms an internal cavities, this cavity has at least one flow export that is used to flow out the first and second conveying components, it is characterized in that, the wall of described housing (34) have at least one first specified fracture position (35) and with separately at least one of the described first specified fracture position second specified fracture position (37), the described first specified fracture position is used for being formed for first and carries first inlet (36) of component under pressure-loaded, the described second specified fracture position is used for being formed for second and carries second inlet (38) of component under pressure-loaded.

2. as claim 1 or the described injection spigot of claim especially thereafter, it is characterized in that the described first and second specified fracture positions (35,37) are arranged on each one and have in the wall zone (39,40) that more adjacent wall zone wall thickness reduces.

3. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, that the housing (34) of described injection spigot (24) has is rotational symmetric basically, preferred columniform basically wall, and a longitudinal end of described injection spigot is provided with flow export (41).

4. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, described injection spigot (24) has an end wall (58) at the longitudinal end relative with described flow export (41), is provided for the specified fracture position (35) of described first inlet (36) on this end wall.

5. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, the specified fracture position (35) that is used for described first inlet (36) is arranged on the especially wall zone (39) of circular edge, and the wall thickness in this wall zone from outside to inside, reduce especially radially symmetrically and/or linearly.

6. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, around the cylindrical wall (59) of described injection spigot (24), construct one or more, especially two at circumferential relative specified fracture position (37), is used to form each one second inlet (38).

7. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, the one or more specified fracture position (37) that is used for each one second flow export (38) is configured in wall zone (40) circular edge especially, that have the wall thickness that more adjacent wall zone reduces suddenly, the longitudinal end with flow export (41) of the wall thickness in this wall zone along vertical (L) of described injection spigot (24) towards described injection spigot reduces, and preferably successively decreases in the direction linearly.

8. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, in the wall zone (40) that the wall thickness that is configured with the specified fracture position (37) that is used for the second specified fracture position (38) reduces, thickest is many times of minimum wall thickness (MINI W.), be preferably two to four times, and the thickest in the wall zone (40) that described wall thickness reduces less than around the wall thickness in wall zone, preferably its half or about 1/3rd.

9. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that described injection spigot (24) is made of plastics, and is especially made by polyamide.

10. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that described injection spigot (24) is made in plastic injection-moulded method.

11. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, the rear portion longitudinal region (25) of described columniform wall (59) in the wall zone (40) that reduces of wall thickness that is used for second inlet (38) have in the outside one around cannelure (60).

12. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, described columniform wall (59) at specified fracture position (37) that is used for second inlet (38) and outlet the anterior longitudinal region (27) between (41) have in the outside one or more longitudinally (L) separately and circumferential extension, integrated rib (63).

13. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that described columniform wall (59) has each annular protuberance that give prominence to around ground at circumferential hoop, integrated (78) in the both sides of described cannelure (60).

14. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that described columniform wall (59) reduces at the transition region from rear portion longitudinal region (25) to anterior longitudinal region (27) has sudden change under the situation of formation axial stop face (54) cross section.

15. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, the cavity of described inside (23) is configured to cylindrical basically, and in this cavity to axial backstop (57) insert a static mixer (56).

16. as one in the claim of prostatitis or the described injection spigot of claim multinomial or especially thereafter, it is characterized in that, described injection spigot (24) on frictional engagement ground under its installment state longitudinally (L) anterior longitudinal region (27) with annular protrusion insert the injection canal (29) of a drilling rod (14) or insert in the extension (28) of described injection canal (29).

17. one kind is used to hole and push the injection head of injecting drilling rod, it is characterized in that, is provided with in described injection head as one in the claim of prostatitis or multinomial described injection spigot.

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