Cooling joint for casting mold
Technical field
The present invention relates to the mold cools down joint, particularly a kind of cooling joint for casting mold.
Background technology
Mould (as the hub mold that adopts when the casting hub) is the vitals in the forming technology, mould is in casting process under high temperature, the high pressure effect all the time, be easy to produce the heat fatigue phenomenon, thereby mould is chapped, this just needs to utilize the cooling medium pipeline that is arranged on the mould type body to improve the thermal balance of mould, reduces the temperature of high hot-zone, reduces thermal stress deformation, thereby prolong the service life of mould, improve quality of castings.The mold cools down mode of prior art generally has two kinds of water cooling and air coolings, wherein air cooling is a kind of more satisfactory cooling means, it can the higher mould of chilling temperature, can determine the speed of cooling by the flow of gas, and the source is succinct convenient, have the workshop of certain scale can both obtain compressed air gas source eaily, but air-cooled because the thermal capacitance of wind is less, cooling velocity and effect can't satisfy the effect of quick cooling.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of intensity of cooling big, and the cooling effectiveness height, and then can improve the cooling joint for casting mold of the production efficiency of mould.
The present invention addresses the above problem the technical scheme that is adopted: a kind of cooling joint for casting mold, comprise the outer tube that is provided with hollow cavity, be fixedly connected on the end cap of outer tube one end, one end is provided with the jet pipe of the water inlet that communicates with water inlet pipe, be provided with the homogenating plate in a plurality of wind hole along circumference, atomizing sieve device and communicate with the mold cools down pipeline and be provided with the velocity hooster of the conical internal cavity that reduces gradually to outlet diameter by import, described jet pipe is located in the cavity of outer tube, described homogenating plate is arranged between the cavity inner wall of the outer circumference surface of jet pipe and outer tube, and described homogenating plate is divided into blast chamber and spray chamber with the cavity of outer tube vertically, and described blast chamber is provided with the air inlet that communicates with blast pipe; Described jet pipe is provided with the water curtain spout that at least one communicates with spray chamber away from the outer circumference surface of an end of water inlet; Described velocity hooster and an end removable be connected of outer tube away from end cap, described atomizing sieve device are located in the cavity of outer tube and place between described outer tube and the velocity hooster.
Compared with prior art, the invention has the advantages that: be provided with air inlet and water inlet on this cooling joint simultaneously, cooling water enters jet pipe by water inlet, and by the ejection of water curtain vent of eruption, forms water curtain.Simultaneously, compressed air enters the blast chamber by air inlet, and enter spray chamber and mixes formation water smoke with water curtain through the wind hole of homogenating plate, and further through the screening of atomizing sieve device, the water atomization particle retaining that diameter is bigger down, the molecule of water atomization then can pass through, and via the velocity hooster speedup that is provided with conical internal cavity, enters the mold cools down pipeline that communicates with this cooling joint mould is cooled off.Like this, directly utilize the air-cooled cooling pipe of prior art, improved the air-cooled type of cooling, adopt the type of cooling of water atomization to improve intensity of cooling, accelerate the cooling effectiveness of mould, realized quick cooling, thereby can improve the production efficiency of mould, make the foundry goods crystallization finer and close, the mechanical property of foundry goods improves.
As improvement, described water curtain spout is two, and described two water curtain spouts all are semicircular, and the width of each water curtain spout is 0.3mm-0.6mm.
Change as further improvement, the described first water curtain spout is arranged on the outer circumference surface of the first half of jet pipe, and the angle of the central axis of described first water curtain spout and jet pipe is 45 °; The described second water curtain spout is located at along on the outer circumference surface of the latter half of jet pipe, and the angle of the central axis of described second water curtain spout and jet pipe is 45 °, and the position of the described first water curtain spout and the second water curtain spout is not on same section line.Like this, the cooling water of the first water curtain vent of eruption and the ejection of the second water curtain vent of eruption forms annular water curtain, is beneficial to atomizing more.
As preferably, described a plurality of wind hole is arcuation, and the wind hole of described a plurality of arcuations evenly is provided with along the homogenating plate circumference.Be beneficial to the homogenising of wind like this, more.
As preferably, described atomizing sieve device is made up of two-layer sieve plate, and the order number of every layer of sieve plate is 40 orders-60 orders.Like this, larger-size water fog particle can't pass through sieve plate, and the size that can control the water fog particle after the atomizing is in certain scope, and water fog particle is more conducive to quick cooling for a short time, and cooling effect is also better.
Same conduct is preferred, also comprises lock nut, and described velocity hooster and outer tube connect as one by lock nut away from an end of end cap.
As further preferred, an end of described velocity hooster is sleeved on the lock nut inner chamber, and an end of described velocity hooster is provided with the radial convex loop that is used for axial limiting, and described outer tube is provided with the external screw thread that screws with lock nut away from an end of end cap.Like this, not only mount and dismount conveniently, and be more conducive to unpicking and washing of sieve plate.
Description of drawings
The structural representation of accompanying drawing cooling joint for casting mold of the present invention.
In the accompanying drawing: the central axis of 1 outer tube, 2 end caps, 3 homogenating plates, 3.1 wind holes, 4 jet pipes, 4.1 first water curtain spouts, 4.2 second water curtain spouts, 4.3 jet pipes, 5 sieve plates, 6 velocity hoosters, 6.1 conical internal cavities, 6.11 imports, 6.12 outlets, 6.2 radial convex loops, 7 locking nuts, 8 blast pipes, 9 mold cools down pipelines, 10 air inlets, 11 water inlets, blast chambers 12,13 spray chambers.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described.
As shown in drawings, a kind of cooling joint for casting mold, comprise the outer tube 1 that is provided with hollow cavity, be fixedly connected on the end cap 2 of outer tube 1 one ends, one end is provided with the jet pipe 4 of the water inlet 11 that communicates with water inlet pipe, be provided with the homogenating plate 3 in a plurality of wind hole 3.1 along circumference, atomizing sieve device and communicate with mold cools down pipeline 9 and be provided with the velocity hooster 6 of the conical internal cavity 6.1 that reduces gradually to outlet 6.12 diameters by import 6.11, described jet pipe 4 is located in the cavity of outer tube 1, described homogenating plate 3 is arranged between the cavity inner wall of the outer circumference surface of jet pipe 4 and outer tube 1, and described homogenating plate 3 is divided into blast chamber 12 and spray chamber 13 with the cavity of outer tube 1 vertically, and described blast chamber 12 is provided with the air inlet 10 that communicates with blast pipe 8; Described jet pipe 4 is provided with the water curtain spout that at least one communicates with spray chamber 13 away from the outer circumference surface of an end of water inlet 11, described velocity hooster 8 and an end removable be connected of outer tube 1 away from end cap 2, described atomizing sieve device are located in the cavity of outer tube 1 and place between described outer tube 1 and the velocity hooster 6.
In this specific embodiment, described water curtain spout is two, and described two water curtain spouts all are semicircular, and the width of each water curtain spout is 0.3mm-0.6mm.Be specially, the described first water curtain spout 4.1 is along the oblique setting of the outer circumference surface of the first half of jet pipe 4, and the angle of the central axis 4.3 of described first water curtain spout 4.1 and jet pipe is 45 °; The described second water curtain spout 4.2 is along the oblique setting of the outer circumference surface of the Lower Half of jet pipe 4, and the angle of the central axis 4.3 of described second water curtain spout 4.2 and jet pipe is 45 °.As shown in drawings, the position of the first water curtain spout 4.1 and the second water curtain spout 4.2 not on same section line, i.e. the position of the first water curtain spout 4.1 and the second water curtain spout 4.2 certain distance that staggers vertically.Like this, all eruptions of the angle before oblique of the first water curtain spout 4.1 and the second water curtain spout 4.2, the eruption better effects if of cooling water, and the cooling water of the first water curtain vent of eruption and the ejection of the second water curtain vent of eruption forms annular water curtain, is beneficial to atomizing more.
In this specific embodiment, described a plurality of wind hole 3.1 is arcuation, and the wind hole 3.1 of described a plurality of arcuations evenly is provided with along homogenating plate 3 circumference.Be beneficial to the homogenising of wind like this, more.
In this specific embodiment, described atomizing sieve device is made up of two-layer sieve plate 5, and the order number of every layer of sieve plate 5 is 40 orders-60 orders.Like this, larger-size water fog particle can't pass through sieve plate, and the size that can control the water fog particle after the atomizing is in certain scope, and water fog particle is more conducive to cooling for a short time.
In this specific embodiment, also comprise lock nut 7, described velocity hooster 6 connects as one by lock nut 7 with the end of outer tube 1 away from end cap.Concrete structure is that an end of described velocity hooster 6 is sleeved on lock nut 7 inner chambers, and an end of described velocity hooster 6 is provided with the radial convex loop 6.2 that is used for axial limiting,, and described outer tube 1 is provided with the external screw thread that screws with lock nut 7 away from an end of end cap 2.During installation, velocity hooster 6 is linked in the inner chamber of lock nut 7, and carry out axial limiting by the radial convex loop 6.2 that velocity hooster 6 one ends are provided with, place two-layer sieve plate 5 between outer tube 1 and the velocity hooster 6 and outer tube 1 is provided with an externally threaded end and lock nut 7 screws, like this, not only mount and dismount very conveniently, and be more conducive to unpicking and washing of sieve plate.
This casting mould cooling joint is provided with air inlet 10 and water inlet 11, and cooling water enters jet pipe 4 by water inlet 11, and by the first water curtain spout 4.1 and 4.2 ejections of the second water curtain spout, forms water curtain.Simultaneously, compressed air enters blast chamber 12 by air inlet 10, and enter spray chamber and mix formation water smoke with above-mentioned water curtain through a plurality of wind hole that the homogenating plate 3 between the cavity inner wall of the outer circumference surface that is arranged on jet pipe 4 and outer tube 1 is provided with, and through being located at the cavity atomizing sieve device screening of outer tube 1, with larger-size water fog particle retaining down, and will be through the molecule ejection of water atomization, and velocity hooster 6 speedups of the conical internal cavity that reduces gradually to outlet diameter via import enter the mold cools down pipeline 9 that communicates with this cooling joint, and mould is cooled off.Like this, directly utilize the air-cooled cooling pipe of prior art, improved the air-cooled type of cooling, adopt the type of cooling of water atomization to improve intensity of cooling, accelerate the cooling effectiveness of mould, realized quick cooling, thereby can improve the production efficiency of mould, make the foundry goods crystallization finer and close, the mechanical property of foundry goods improves.
The present invention not only is confined to above embodiment, and its concrete structure allows variation, as: quantity and order number average that the water curtain spout also can be other shapes, sieve plate 5 can require specifically to choose according to reality; Deng.All various variations of being done in the protection domain of independent claims of the present invention are all in protection domain of the present invention.