FILTRATION APPARATUS
This invention relates to a filtering device, in particular to an improved metal melting filtering device. As is well known, when the molten metal, the molten metal, in particular the molten aluminum in practice usually will have the suspension entrained solid impurities, these solid to the final metal casting product is harmful. After the molten metal solidifies and these entrained solid as flavescens impurities in the product appear in the final casting, the final product is not enough or lustrousness very poor ductility and Anodization characteristic. These flavescens impurities could be one of a number of sources. For example, recycling after the molten metal can be broken is entrained from the surface oxide film. In addition flavescens impurities from some insoluble impurities may, as a carbide, boride and other substances from the corrosion of the refractory material of the furnace or to configurations. The known porous to foam ceramic material particularly suitable for filtering the molten metal, such as by preil (Michael J.Pryor) and the American Patent No. 3 bagre (Thomas J.Gray) on 8 July 1975, 893,917 "molten metal filter", and by these two in the American Patent No. 3 30 March 1976, 947,363 "ceramic foam filter (James E.Dore) and (John C.Yarwood), dougherty 亚伍徳 ", by the American Patent No. 4 in preus (Roberr K.Preuss) 28 March 1978, 081,371 "molten metal filter" and by this three 17 May 1977 made in the American Patent No. 4, 024,056 "molten metal filter", as described in the. These foam ceramic material due to various reasons particularly useful for filtering the molten metal, one of the reasons is that their high filtering efficiency, low cost, easy to use and the filter element can be replaced, used on the basis of the effect is not thrown away using variable. Preparing these foam ceramic filter is convenient, inexpensive, and can be used by the fact that a retractable, apart from the need to provide an efficient filtering components, also requires the development from the filter unit easy disassembly of the structure of the porous the melting of the metal filter. Since the filter is designed to be used over-throw device, therefore, is to provide a key for effective structure of the filter is attached to the The easy disassembly in the support. The support saddle or the filter chamber itself generally 是槽 , castformed or an integral part of the central, molten metal by the resistance should be with the standard groove of the refractory material similar to the structure of the material. The general Adopt elastic sealing mechanism or sealing 垫类 along the periphery of the peripheral seal of the filter plate to seal it. In order to effectively through the filter plate to the position of the pumping, with the prior art, the filter plate is placed on the peripheral surface of the inclined sealing lined. The filter plate is applied to the vertical downward securely sealed in the filter chamber on the position of the filter plate, a filter chamber also has a corresponding inclined surface. Has been found, as the result of the force on the filter plate is attached to the filter procreant, may cause damage to the filter plate structure, which can lead to metal leakage or invalid metal filter. Natural also found difficult of the removed filter plate. Also, the general use of the filtering component is usually the filter plate is horizontally placed in a filter chamber. This is the result of the metal bath is placed in a large amount of space. Therefore, the filter plate is vertically arranged, the filtering component of the undesirable, because the vertical arrangement of the space can be saved. For example, American Patent No. 4, 092,153 is vertically arranged filter Board. However, the patent only on the peripheral surface of the filter plate inclined with the filter chamber similar to match with the inclined surface, so that the filter plate horizontally arranged in the same manner as the filter plate is inserted into the filter chamber. Although the us Patent No. 4, 092,153 patent effectively put forward filter plate vertically placed, however, has been found to be due to the fact the metal solidification and removed used filter-related issues, this has not been very satisfactory for the arrangement of the vertical placement. Therefore, the main object of the invention is to provide on an industrial scale, easy-to-use improved filtering the molten metal device. Further objectives of this invention is to provide a vertical mounting filter component is a characteristic of the improved filtering the molten metal device. Another object is to provide a very convenient installation and removal of the filtering member is characterized in that the aforesaid improved of the filtering device. Other purposes of this invention, as will be seen below. In accordance with this invention, it has proved easy to achieve the above-mentioned objectives and advantages. This invention improved melting of the metal filter device comprising a filter chamber, The inlet and outlet of a molten metal, molten metal is the flow passage, also comprising a filtering component, which is preferably is vertically arranged, to engage with the filter chamber, is placed between the inlet and outlet, which comprises a resistance to melting of metallic solid, plate-like element, the element blocking flow passage, in which an allow melted by the metal of the porous filter element. The porous element is preferably a ceramic foam filter, can be arranged in a straight line with the inlet and the outlet. In the preferred embodiment, the outer edge of the foam ceramic filter with an inclined so as to be firmly attached in the solid element with which it is matched in the sloping edge. The edge of the filter chamber preferably has at least two engaging mechanism, best programme is at least engage the two filter parts make it possible to use the filtering component of the two are aligned in a line, or can be simple and convenient to put into the 1st 2nd filtering element and removed by the filtering element will not be interrupted metal flow. Preferably also a baffle element, can be mounted in the filter chamber between the filter member and the inlet at the bottom of the cylinder to force the metal flow to the filter, prevent the suspended 参杂物 reaches the filter. Below the invention will be seen from the characteristics of the other. From the discussion will be explained below in more easily 理介 The invention and the advantages thereof, wherein: Figure 1 is a perspective and baffle plate removed; Figure 2 is provided with a baffle plate and the filter part of the filter chamber partial profiles; Figure 3 is to use two of the filtering component arranged in a line, the partial profiles similar to that of Figure 2. Reference to Figure 1, the filter 10 is preferably a steel shell 缶体 11, insulating inner layer 12 and resisting the metal lining 13, such as a ceramic, by these define an interior of the filter 14 and led to the molten metal must be 缶自然 resistance, therefore has the advantages of light weight insulating casting is best with the steel shell of the liner. The role of the 过滤器缶 containing molten metal, directs fluid through the filter. The internal structure of the filtering element and baffle 过滤器缶 with matching the external structure, which will be described in the ensuing. The filter cylinder 10 with an engagement mechanism is used to engage the filter member and the baffle plate, for example, three to the tank 15, its role in the ensuing description. At the same time the filter cylinder 10 with a metal inlet 16 and metal outlet 17, the direction of flow of the metal as shown by an arrow. The filter member 20 includes filtration resistance of the melting of the metal, a plate-shaped solid member 21, and is located in the solid member 21 to permit a plurality of molten metal through the porous filtering member 22. A porous filter element is preferably in accordance with the American Patent No. 3, prepared by the method of the described 962,081 foam ceramic filter. This patent describes a ceramic foam filter dharma preparation according to, the polyurethane foam is filled with ceramic slurry, and then sintering the material of the original polyurethane foam structure impregnated to form a foam ceramic material. Naturally, any other porous filtering material can be used. The porous filter element in the solid member, preferably in the periphery of the solid member 21 and 22 MOULTING used between the porous member 23 so that the gasket material closely attached to the solid member. As shown in Figure 1, the use of an inclined circular filter device and the periphery of the solid similar inclined with the periphery of the matching. The periphery of the solid gasket material 24 for external, and a support mechanism 25, it has the rod 26 with the groove 15 so as to filter the part according to the picture can be 2, 3 in the manner shown in the attached to the filter cylinder 10. Dot line 27 with the groove 26 in the middle of the said rod 15 a pair of combined path. As shown in Figure 1, 2, solid member 21 will be blocked completely 14 thus led through the molten metal from flowing through 22 MOULTING led in. Support mechanism 25 is provided with a hook 28, as in the position of the component from the 过滤器缶 dismounting the filter loading. The gasket material may be of any known high temperature resistance, low density, compressible ceramic fibre material or other known sealing gasket material, its role is to keep the solid member 21 and 22 between the outer edge of the porous member 14 with the led to the outer edge of the sealing between the with the solid member 21. Preferably provided with a baffle 30, which is a solid piece of metal melting resistance 31, and is provided with a solid piece 31 surrounding the periphery of the external gasket 32, is also provided with the support of the support structure 25 similar mechanism 33. Support mechanism 33 is additionally provided with a rod 34, which with the filter member 20 with the groove 15 in the front surface of the most similar to the way a pair of matching. Baffle 37 15 30 along the point marking 装入槽 in surface a pair of, and a hook 38 is used to remove the baffle. The action of the baffle is to improve the temperature distribution, forcing the metal flow to the filter 缶底 , prevent the suspension entrainment to reach the filter. Thus as shown in figure 2 and 3 the 示挡 Plate is placed in the filter member 20 and between the inlet 16. In accordance with this invention it is possible to provide a plurality of filter components, such as the application of a filter element as in the vicinity of the 2nd 20a (see figure 3) and one. 2nd filtering element and the filter member 20 the same, comprises a solid member 21a, porous filter element 22a, 22a 23a with the porous member external of the gasket material. 类似地 , support mechanism 28a and the filter member 20 similar 25a provided with a hook. In the preferred embodiment, the filtering element is usually inserted into the filter preheating first 缶之前. This is not necessary, however, always as an excellent operation wishes to do the same. In the vicinity of the preheating 过滤缶 can be arranged in order to separate the filter member is inserted to the molten metal before the temperature of the solid member and MOULTING improved. Have seen preheating reduces the metal loss of heat, thermal shock of the filter and filter start to work. In operation, the filter member is inserted to the intermediary 过滤器缶 best. In terms of casting process or casting operation to change the filter after the end of, a 2nd preheating can be placed downstream of the filtering component of the groove 20a 过滤器缶. The downstream after the filter component is firmly provided, if necessary, the filtering component of the from the filter 20 in the middle can be conveniently 缶拆 rather than under the continuous casting operation will be. When a need to change the filter, the filter element can be placed on the middle of the preheating of the groove, the downstream of the filter member can be very easily removed. The present invention also can be other forms or to other methods to achieve, but will not deviate from its purpose or basic characteristics. This embodiment should be considered in all respects illustrative and not restrictive, intended to the right as indicated with the requirements of the scope of the invention and the significance of all of the changes within the limits of the equivalent and includes within the scope of the present invention. Improved filtration apparatus including a filter chamber having a metal inlet and a metal outlet defining a molten metal flow path therebetween and a filtration assembly engageable therewith disposed between the inlet and the outlet. 1, a device for filtering the molten metal and alloy of the device, it has a in the container includes an inlet and an outlet of the led, and a replaceable filter insert in the filter chamber, the filter insert includes a resistance to melting of the metal of the plate-like member and a ceramic foam material, the firmware of the porous filter element installed in the firmware, a plate-shaped piece. The firmware, a plate-shaped piece has a lean-side end face and the replacement of the filter insert is designed to coincide with the height of the filter chamber and can be located in between the inlet and outlet. Characterized in that, A baffle upstream of the filter insert, the filter insert is vertically arranged, fixed at the bottom of the groove is in the form of the outer side of the container. 2, the device according to claim 1, characterized in that, the porous filter element is rounded. 3, the device according to claim 1 or 2, characterized in that, in the periphery of the porous filtering device externally connected with a peripheral sealing gasket. 4, the device according to claim 3, characterized in that, the above-mentioned peripheral gasket is located between the filter insert and the filter chamber. 5, the device in accordance with claim 1 or 2, characterized in that, in order to filter insert and the baffle plate is arranged in the filter chamber, the filter chamber with two groove in the outside of the container, and the filter insert and the baffle with two matched with the corresponding grooves on the pin. 6, the device in accordance with claim 3, characterized in that, in order to the filter insert and the baffle plate is arranged in the filter chamber, the filter chamber with two groove in the outside of the container, and the filter insert and the baffle with two matched with the corresponding grooves on the pin. 7, the device according to claim 4, characterized in that, in order to the filter insert and the baffle plate is arranged in the filter chamber, the filter chamber with two groove in the outside of the container, and the filter insert and the baffle with two matched with the corresponding grooves on the pin.