CN206796364U - A kind of pouring head mixing head for PU materials - Google Patents

Abstract

A kind of pouring head mixing head for PU materials, including mixing head main body, boss portion is inverted in top connector and bottom, mixing head main body, the cross section outer rim that boss portion is inverted in top connector and bottom is rounded and mutually coaxially connected, the top of mixing head main body is connected with top connector, the bottom surface that the bottom of mixing head main body is inverted boss portion with bottom is connected, mixing head main body is cylindrical, uniform intervals are provided with the first more than three rows mixing components in side wall, it often ranked first the first stirring raised line of more than three that mixing component includes surrounding cylinder circumference, uniform intervals are set multiple first stirring raised lines on same circumference along its length.Above-mentioned pouring head mixing head has unique structure, and mixing is abundant, is produced substantially without bubble, and disassembly, cleaning are convenient, and because there are mixing head the raw material such as PP or PE layers, PU to be not easy to be bonded to mixing head surface, are capable of the continuous operation of longer time.

Description

A kind of pouring head mixing head for PU materials

Technical field

It the utility model is related to PU (polyurethane) material placingJi Shu field, especially a kind of pouring head for PU materials Mixing head.

Background technology

, it is necessary to which using casting equipment model will be poured into such as PU expanded materials in PU (polyurethane) material pouring technology In, obtain corresponding PU products after foaming in a model.

Existing pouring head mixing head has substantial amounts of bubble to produce in use, and cast mixed effect is bad.Meanwhile Existing pouring head mixing head is made of such as stainless steel and other metal materials, and casting equipment itself is complicated, is not easy to Dismounting.During product use, PU materials are readily bonded on mixing head, the rotation of mixing head, and then influence casting quality； Need constantly to shut down in use, clean, low production efficiency；And the PU materials bonded on mixing head bond with inwall Closely, it is more difficult to remove.

Utility model content

To solve the above problems, the utility model provides a kind of pouring head mixing head for PU materials, including mixing Boss portion is inverted in head main body, top connector and bottom, and the transversal of boss portion is inverted in mixing head main body, top connector and bottom Face outer rim is rounded and mutually coaxially connected, and the top of mixing head main body is connected with top connector, the bottom of mixing head main body The bottom surface that boss portion is inverted with bottom is connected, and mixing head main body is cylindrical, and uniform intervals are provided with more than three rows in side wall First mixing component, the first stirring raised line of more than three that mixing component includes surrounding cylinder circumference is often ranked first, same Uniform intervals are set multiple first stirring raised lines on circumference along its length.

Further, it is provided with one on the bottom margin of mixing head main body and ranked first mixing component.

Further, mixing head also includes bottom connecting portion, and bottom connecting portion is cylindrical, and its height is not more than mixing head master Two on body ranked first the spacing between mixing component, and its diameter is less than the diameter of mixing head main body；The bottom connecting portion is same Axis connection is inverted in mixing head main body and bottom between boss portion.

Further, one ranked second mixing part on the lateral edges being connected with bottom inversion boss portion of bottom connecting portion Part, including the second stirring raised line of more than three around cylinder circumference, multiple second stirring raised line edges on same circumference Its length direction uniform intervals is set.

Further, it is described first stirring raised line, second stirring raised line be in isosceles boss-shaped, with along its width etc. Waist trapezoid cross section.

Further, top connector is cylindrical, and the diameter of top connector is more than the diameter of mixing head main body, on top Formed with fillet surface on the basal surface position that connecting portion is connected with mixing head main body, formed with rotation on the top surface of top connector Tooth.

Further, mixing head is made up of plug and outer layer, and outer layer is molded over mandrel surface, is made up of PP or PE materials, or With PP or PE coatings.

Further, plug includes caput, even rods and bars tail connecting portion, and caput, even rods and bars tail connecting portion have circular Outer edge cross-section and mutually it is coaxially connected, the both ends of connecting rod are coaxially connected with caput and rod tail connecting portion respectively.

Further, caput top edge and bottom are formed oriented along nearby annular projection is respectively arranged with caput bottom face The conical surface of lower extension.

Further, the bottom that rod tail connecting portion is connected with connecting rod is along nearby an annular projection is provided with, in rod tail connecting portion The annular projection and rod tail connecting portion top along between be additionally provided with another annular projection.

Pouring head mixing head of the present utility model has unique mixed structure, and mixing is abundant, is produced substantially without bubble, Disassembly, cleaning are convenient, and because there are mixing head the raw material such as PP or PE layers, PU to be not easy to be bonded to mixing head surface, compared to Prior art, mixing head of the present utility model are capable of the continuous operation of longer time.

It is demonstrated experimentally that in the case where using PU (polyurethane) raw material (virgin material), the pouring head mixing of all steel material Just need to clear up after material feeding 200 times as first, and the pouring head mixing head of band PP of the present utility model or PE layers can noted Material 600 times after can also normal operation, by operational efficiency lifted more than 3 times.

Brief description of the drawings

Fig. 1 is the top view of casting equipment of the present utility model；

Fig. 2 is sectional view of the casting equipment top view of the present utility model along A-A directions；

Fig. 3 a are the stereogram of the overcoat of casting equipment of the present utility model；

Fig. 3 b are the side view of the overcoat of casting equipment of the present utility model；

Fig. 3 c are the top view of the overcoat of casting equipment of the present utility model；

Fig. 3 d are the sectional view in C-C directions along Fig. 3 b of the overcoat of casting equipment of the present utility model；

Fig. 3 e are the sectional view in C-C directions along Fig. 3 b of the overcoat of the another embodiment of the utility model casting equipment；

Fig. 4 a are the stereogram of the material mouth of casting equipment of the present utility model；

Fig. 4 b are the sectional view of the material mouth of casting equipment of the present utility model；

Fig. 5 a are the front view of the mixing head of casting equipment of the present utility model；

Fig. 5 b are the sectional view in C-C directions along Fig. 5 a of the mixing head of casting equipment of the present utility model；

Fig. 5 c are the front view of the mixing head plug of casting equipment of the present utility model；

Fig. 5 d are the side view of the mixing head of the another embodiment of the utility model casting equipment；

Fig. 5 e are the front view of the mixing head of the another embodiment of the utility model casting equipment.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

Casting equipment/pouring head as shown in Figure 1 and Figure 2, is provided with multiple bearings 11 in the bearing block 1 on pouring head top, main Axle 2 is contained in bearing block 1, and the both ends of main shaft 2 pass from the both ends of bearing block 1 respectively, and the end of bearing block 1 is passed in main shaft 2 Be provided with sealing device 12, the sealing device 12 can use the utility model people preceding patent 201410244757.5, Technology in 201420293401.6.Bearing block 1 is fixed in terminal pad 3, and the sealing device 12 of the bottom of bearing block 1 passes through connection Disk 3, main shaft 2 are extend into the mixing chamber 4 that the lower section of terminal pad 3 is set.Cylinder 41, inlet valve 42, needle-valve are connected with mixing chamber 4 43rd, purge valve 44, feed back pressure regulator valve 45 etc., a variety of PU raw materials are injected into mixing chamber 4 by one or more material interface, main shaft 2 extend on the end of mixing chamber 4 and are fixedly connected with along the axially extending mixing head 5 of main shaft 2.The top of mixing head 5 is positioned at mixing In the space of room 4, the middle and lower part of mixing head 5 passes from mixing chamber 4, is received into the space of overcoat 6 of the bottom of mixing chamber 4 fixation In, the bottom of overcoat 6 is provided with castable mouth 7.When casting equipment works, it is vertically arranged, is rotated by motor driven main shaft 2, main shaft 2 Fixed mixing head 5 follows main shaft 2 to rotate together with one end of mixing chamber 4, and a variety of PU raw materials (being determined according to product) pass through Different material interfaces 42 enter mixing chamber 4, by PU raw materials in mixing chamber 4 and the space of overcoat 6 under the turning effort of mixing head 5 In mixed, the PU materials mixed are foamed by expecting that mouth 7 is injected into grinding tool.

As illustrated in figs. 3 a-3d, overcoat 6 has hollow cylindrical side wall 60, and the one end of side wall 60 is provided with to be connected with mixing chamber 4 Flange 61.The connecting hole 62 being connected together for the respective base projection with mixing chamber 4 is provided with flange 61.Flange 61 Outer rim protrudes from sleeve side wall 60, formed with annular groove 64 on the end face of the flange 61, in order to be connected with mixing chamber 4 When sealing ring is installed, form sealing structure.Sleeve side wall 60 is provided with the sandwich for cooling water circulation, such as Fig. 3 c, 3d It is shown, including inwall 601 and outer wall 602；The top of inwall 601 is provided with the flange collar 603 towards outer wall 602, and flange collar 603 seals Abut on outer wall 602, can flange collar 603 abut outer wall 602 position on set groove 604, reached by laying sealing ring To sealing purpose；Inwall 601 and outer wall 602 closure of flange collar more than 603 link together；The bottom of inwall 601 is to outer wall 602 Bending, is tightly connected at the adapting table 611 of outer wall 602 with outer wall 602；Two sealed spacer bar 606 is arranged on sleeve side wall Between the inwall 601 and outer wall 602 of 60 main bodys, extend respectively from the lower edge of inwall flange collar 603 to the bottom of overcoat 6, with inwall 601st, outer wall 602 and flange collar 603 are tightly connected, and respectively between the bottom of inwall 601 and the bending sealed connection of outer wall 602 portion's holding Every, hole (not shown) is formed, so as to split to the mezzanine space between inwall 601 and outer wall 602, composition inwall 601 In cooling water free air space between outer wall 602.It is consequently formed the left and right two for being used for cooling water circulation of sleeve side wall 60 Relative sandwich portion 607,608, it is by the bottom hole UNICOM, at two relative tops of sandwich portion 607,608 It is also respectively provided with two cooling water gateways 609,610.In addition, flange 61 can be integrally formed with the outer wall 602 of side wall.This reality Apply in example, extend to form outer wall extension 612 in the bottom of adapting table 611 of outer wall 602, the shape on the inner side of outer wall extension 612 Into the internal thread having for being connected with material mouth 7, the connecting portion of outer wall extension 612 and outer wall adapting table 611, which is provided with to lay, to be sealed The sealed groove 605 of circle.The inwall 601 of sleeve side wall 60 is made up of PP or PE materials.

Or in another embodiment of the present utility model, as shown in Figure 3 e, with the composition sleeve side wall 60 shown in Fig. 3 d The inwall 601 of middle cooling water circulation sandwich and the Split type structure of outer wall 602 are different, inwall 601 in the present embodiment and outer Wall 602 is structure as a whole, therebetween formed with mezzanine space.Two sealed spacer bars 606 are arranged on the interior of the main body of sleeve side wall 60 Between wall 601 and outer wall 602, top extends to the bottom of overcoat 6 at the top of overcoat respectively, with inwall 601, outer wall 602 and overcoat It is tightly connected at the top of top, and keeps being spaced with the inner and outer wall joint portion of jacket bottom respectively, forms hole (not shown), So as to split to the mezzanine space between inwall 601 and outer wall 602, the cooling water between inwall 601 and outer wall 602 is formed In free air space.The relative sandwich portion 607,608 in the left and right two for being used for cooling water circulation of sleeve side wall 60 is consequently formed, It is also respectively provided with two cooling waters by the bottom hole UNICOM at two relative tops of sandwich portion 607,608 Gateway 609,610.The inwall 601 of sleeve side wall 60 is towards having PP or PE on a side surface of pouring head overcoat hollow space Coating.

Expect that mouth 7 is in funnel-shaped structure wide at the top and narrow at the bottom, can be sealably coupled to by the way of screw thread or engaging and put outside, It has inside and outside double-layer structure, and as shown in Fig. 4 a, 4b, the internal layer 701 contacted with cast raw material is made up of PP or PE materials, or tool There are PP or PE coatings, be wrapped in the outer layer 702 outside the internal layer 701 and be made up of the high-strength material of such as stainless steel, so as to Increase the integral rigidity of charging nozzle 7.The funnel-shaped structure top edge side for expecting mouth 7 in a ring, is provided with and the inwall of overcoat 6 The external screw thread 703 of internal thread connection on 601 inner side, funnel-shaped structure dome top surface is formed with annular groove 704, annular The inner edge and bottom of groove 704 are made up of internal layer 701, and the outer cause outer layer 702 of annular groove 704 is formed, and annular groove 704 is used In accommodating sealing ring, so as to be tightly connected with overcoat 6.The funnel-shaped structure external collar of material mouth 7 has terrace with edge 705, such as six ribs Platform, in order to expect the installation of mouth 7.

Fig. 5 a show the stereogram of mixing head 5 of the present utility model, according to use state from top to bottom (Fig. 5 a from the right side to It is left) include four sections --- fin section 501, the first spiral section 502, the stirring spiral section 504 of raised section 503 and second.

Fin section 501 is located at the top of mixing head 5, has the flange for protruding from mixing head main body 506 on its top 5011, it is convexly equipped with 3-5 pieces fin 5012 relative to the axially inclined of mixing head main body 506 on the surface of mixing head main body 506, it is excellent 3 are selected, the multi-disc fin 5012 is evenly distributed on the circumferential surface of mixing head main body 506, is highly 3-6mm, fin 5012 one end are connected to the lower surface of flange 5011, and the other end extends to the top edge of the first spiral section 502, the multi-disc fin 5012 have an identical angle of inclination, the top edge institute of fin 5012 and the spiral section 502 of flange 5011 and first in the present embodiment Into acute angle be 60 °, those skilled in the art can select in the range of 50-70 °.

First spiral section 502 is located at the lower end of fin section 501, uniformly convex on the circumferential surface of its mixing head main body 506 Provided with a plurality of spiral raised line 5021, the hand of spiral of a plurality of spiral raised line 5021 and the inclination side of the fin 5012 of fin section 501 It is highly 2-3mm to identical.Circumferential surface in the centre position of the first spiral section 502, digs to axis direction uniform intervals There is the groove 5022 of two identical sizes, each groove respectively accounts for 120 ° of circumference, is separated by 60 ° of circumference, and those skilled in the art also may be used Uniformly to dig three grooves.

Stirring raised section 503 be located at the lower end of the first spiral section 502, the mixing head main body 506 of stirring raised section 503 it is straight Footpath is less than the diameter of the mixing head main body 506 of fin section 501, the first spiral section 502 and the second spiral section 504, raised in stirring Uniform intervals are provided with four row stirring projection on the surface of the circumferencial direction of mixing head main body 506 of section 503, i.e., in mixing head main body 90 ° are arranged at intervals four row stirring projections on 506 circumferencial directions.Wherein, first row stirring is raised includes and the neighbour of the first spiral section 502 The one first stirring projection 5031 connect and three second stirrings set along the axis of mixing head main body 506 successively uniform intervals are convex Play 5032；First stirring projection 5031 and the second stirring projection 5032 are in boss-shaped, and the cross section of the first stirring projection 5031 is With mixing head main body 506 axially for the rectangle of long side, the cross section of the second stirring projection 5032 is with the axle of mixing head main body 506 To the inversion right-angled trapezium for vertical edges, the incline direction of the hypotenuse of right-angled trapezium and a plurality of spiral shell of the first spiral section 502 are inverted The hand of spiral for revolving raised line 5021 is identical with the incline direction of the fin 5012 of fin section 501.Secondary series stirring is raised to be included pair Three secondary series stirring that the gap uniformities between four stirring projections 5031,5032 in projection are set should be stirred in first row Set after projection 5032 and three second stirring projections 5032 convex with one first stirring of the second spiral section 504 adjoining Play 5031.Similar, the raised raised gap uniformity of adjacent one row stirring that corresponds to of the three, the 4th row stirrings is set.First stirs The height for mixing the stirring projection 5032 of projection 5031 and second is 6-12mm.In the present embodiment, it is described in the case of four row, this Art personnel, which are appreciated that, can circumferentially be set as above spaced even column stirring projection to realize this practicality It is new.It is raised alternatively, it is also possible to only be uniformly arranged multiple second stirrings in the mixing head main body 506 of stirring raised section 503 5032 realize the utility model.

Second spiral section 504 is located at the lower end of stirring raised section 503, has a plurality of spiral raised line 5041 and groove 5042, Its structure is identical with the first spiral section 502.

It can set, fin section 501, the first spiral section 502, the stirring spiral section 504 of raised section 503 and second have substantially Identical external diameter.It can also set, fin section 501, the first spiral section 502 and the second spiral section 504 are outer with what is be substantially the same Footpath, the external diameter of stirring raised section 503 are slightly larger than the external diameter of fin section 501, the first spiral section 502 and the second spiral section 504, that is, stirred The top for mixing projection is higher by the surface of fin section 501, the first spiral section 502 and the second spiral section 504.

Preferably, fin section 501, the first spiral section 502, the stirring spiral section 504 of raised section 503 and second are in mixing head 5 Length ratio on axial direction is 2：3：4：3.

Preferably, the spiral raised line of the spiral section 502 of fin 5012 and first of fin section 501 or the second spiral section 504 5021st, 5041 height ratio is 1：1.5-2.0；The fin 5012 of fin section 501 and the first stirring of stirring raised section 503 are raised 5031 and second stirring projection 5032 height ratio be 1：3-4.0.

During assembling, the spiral section 502 of fin section 501 and first is located in the space of mixing chamber 4, and raw material is preferably driven into The middle and lower part of fin section 501, by the rotation of mixing head, raw material can be pressed downward by fin section 501, and less can be squeezed into The generation of bubble during raw material；The stirring spiral section 504 of raised section 503 and second is located in the space of overcoat 6.In addition, and funnel-form The shape of material mouth 7 be adapted, the lower end mixing head main body 506 of the second spiral section 504 is arranged to inverted boss 5061.

As shown in Fig. 5 b, 5c, mixing head 5 is made up of the plug 51 and outer layer 52 adaptable with mixing head shapes, outer layer into Type is made up of light material, can be made up of PP or PE materials, or have PP or PE coatings in mandrel surface；Plug 51 is preferably Such as the metal material of stainless steel, in hollow form, it is connected with main shaft 2, is rotated under the drive of main shaft 2.

Plug 51 includes caput 511, connecting rod 512 and rod tail connecting portion 513, caput 511, connecting rod 512 and rod tail connecting portion 513 cross section outer rim is rounded and mutually coaxially connected, the both ends of connecting rod 512 respectively with caput 511 and rod tail connecting portion 513 It is coaxially connected.The top edge of caput 511 and bottom are along being nearby respectively arranged with annular projection 5112,5113, on the bottom face of caput 511 Formed with the conical surface 5111 extended downwardly.Rod tail connecting portion 513 is convex along nearby a ring-type is provided with the bottom that connecting rod 512 is connected 5131 are played, is additionally provided with the annular projection 5131 of rod tail connecting portion 513 and the top of rod tail connecting portion 513 between another Annular projection 5132.Main shaft 2 is inserted into the hollow space of plug 51 by rod tail connecting portion 513.

Because cladding material has selected light material, plug employs the moulding of similar dumbbell, compared in the prior art The mixing head of metal material, mixing head easy to manufacture of the present utility model, uniform rotation can be ensured, reduce eccentric degree, from And in mixed processes, the generation of bubble in raw material is reduced, improves product quality.

Fig. 5 d, 5e show the stereogram of the mixing head 8 of the another embodiment of the utility model, and mixing head 8 includes mixing head Main body 81, top connector 82, bottom are inverted boss portion 83 and bottom connecting portion 84, mixing head main body 81, top connector 82, Boss portion 83 is inverted in bottom and the cross section outer rim of bottom connecting portion 84 is rounded and mutually coaxially connected, mixing head main body 81 Top is connected with top connector 82, and the bottom of mixing head main body 81 is connected with one end of bottom connecting portion 84, bottom connecting portion 84 other end is inverted boss portion 83 with bottom and is connected.Selectable, mixing head 8 can omit bottom connecting portion 84, mixing head Directly boss portion 83 is inverted with bottom and be connected in the bottom of main body 81.

Mixing head main body 82 is cylindrical, and uniform intervals are provided with 6 rows (more than or equal to 3 in the side wall of mixing head main body 81 Row) mixing component, wherein being provided with row's mixing component on the bottom margin of mixing head main body.Often row's mixing component includes ring Around 6 (being more than or equal to 3) first stirring raised line 85 of cylinder circumference, 6 first stirring raised line 85 edges on same circumference Its length direction uniform intervals is set, and 6 first stirring raised lines 85 are along its length around the post of mixing head main body 82 in figure Body circumference, i.e., the length direction of the first stirring raised line 85 is perpendicular to the cylinder axial direction of mixing head main body 82, those skilled in the art It could be aware that, the length direction of the first stirring raised line 85 can be set to favour the cylinder axial direction of mixing head main body 82, mixed During head rotation, apply the spinning force that boss portion 83 is inverted towards mixing head bottom.Each first stirring raised line 85 is in isosceles boss Shape, have along the isosceles trapezoid section of its width.

Bottom connecting portion 84 is cylindrical, between its height is not more than between two row's mixing components in mixing head main body 81 Away from its diameter is less than the diameter of mixing head main body 81.The side that connecting portion 84 is connected with bottom inversion boss portion 83 in bottom There is row's mixing component, including 6 (being more than or equal to 3) second stirring raised line 86 around cylinder circumference, same on edge Uniform intervals are set 6 second stirring raised lines 86 on circumference along its length.Each second stirring raised line 86 is convex in isosceles Mesa-shaped, have along the isosceles trapezoid section of its width.The length of second stirring raised line 86 is less than the first stirring raised line 85 Length.

It is inverted coniform boss that boss portion 83 is inverted in bottom, is adapted with the shape of funnelform material mouth 7, its bottom surface It is connected with bottom connecting portion 84 or mixing head main body 81.

Top connector 82 is cylindrical, is formed on the basal surface position that top connector 82 is connected with mixing head main body 81 There is fillet surface 87, formed with rotation tooth 88 on the top surface of top connector 82.

Identical with the mixing head 5 of previous embodiment, mixing head 8 includes being made up of plug and outer layer, and outer layer is molded over plug Surface, it is made up of, can be made up of PP or PE materials light material, or there is PP or PE coatings；Plug 51 is preferably for example stainless The metal material of steel, in hollow form, it is connected with main shaft 2, is rotated under the drive of main shaft 2.Plug in the present embodiment with it is previous The mandrel structure of embodiment is identical, will not be described here.

The preferred embodiment created to the utility model above is illustrated, but the utility model is created not It is limited to the embodiment, those skilled in the art can also make on the premise of without prejudice to the utility model creative spirit A variety of equivalent modifications or replacement, these equivalent modifications or replacement are all contained in the application claim limited range It is interior.

Claims (10)

1. A kind of 1. pouring head mixing head for PU materials, it is characterised in that：Including mixing head main body, top connector, bottom It is inverted boss portion and bottom connecting portion, mixing head main body, top connector, bottom are inverted the transversal of boss portion and bottom connecting portion Face outer rim is rounded and mutually coaxially connected, and the top of mixing head main body is connected with top connector, the bottom of mixing head main body It is connected with one end of bottom connecting portion, the other end and the bottom of bottom connecting portion are inverted boss portion and are connected,

   Mixing head main body is cylindrical, and uniform intervals are provided with the first more than three rows mixing components in side wall, often ranked first and stir Mix the first stirring raised line of more than three that part includes surrounding cylinder circumference, multiple first stirrings raised lines on same circumference Uniform intervals are set along its length.
2. 2. pouring head mixing head as claimed in claim 1, it is characterised in that：It is provided with the bottom margin of mixing head main body One ranked first mixing component.
3. 3. pouring head mixing head as claimed in claim 1, it is characterised in that：The height of the bottom connecting portion is no more than mixing Two in head main body ranked first the spacing between mixing component, and its diameter is less than the diameter of mixing head main body.
4. 4. pouring head mixing head as claimed in claim 3, it is characterised in that：Bottom connecting portion is inverted boss portion company with bottom Have one to ranked second mixing component, including the second stirring raised line of more than three around cylinder circumference on the lateral edges connect, Uniform intervals are set multiple second stirring raised lines on same circumference along its length.
5. 5. pouring head mixing head as claimed in claim 4, it is characterised in that：The first stirring raised line, the second stirring raised line In isosceles boss-shaped, have along the isosceles trapezoid section of its width.
6. 6. pouring head mixing head as claimed in claim 1, it is characterised in that：Top connector is cylindrical, top connector Diameter be more than mixing head main body diameter, formed with chamfering on the basal surface position that top connector is connected with mixing head main body Face, formed with rotation tooth on the top surface of top connector.
7. 7. the pouring head mixing head as described in one of claim 1-6, it is characterised in that：Mixing head is made up of plug and outer layer, Outer layer is molded over mandrel surface, is made up of PP or PE materials, or has PP or PE coatings.
8. 8. pouring head mixing head as claimed in claim 7, it is characterised in that：Plug includes caput, even rods and bars tail connecting portion, Caput, even rods and bars tail connecting portion have a circular outer edge cross-section and mutually coaxially connected, the both ends of connecting rod respectively with caput It is coaxially connected with rod tail connecting portion.
9. 9. pouring head mixing head as claimed in claim 8, it is characterised in that：Caput top edge and bottom along nearby setting respectively There is an annular projection, formed with the conical surface extended downwardly on caput bottom face.
10. 10. pouring head mixing head as claimed in claim 9, it is characterised in that：The bottom edge that rod tail connecting portion is connected with connecting rod An annular projection nearby is provided with, is additionally provided with the annular projection of rod tail connecting portion and the top of rod tail connecting portion between Another annular projection.