Micropore aerator aeration membrane, molding method and mold
A technology for microporous aerators and forming molds, which is applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc. tearing and other problems, to prevent the normally open micro-holes from backflowing, reduce wasted man-hours, and improve stress resistance.
Active Publication Date: 2010-07-14
JIANGSU YULONG ENVIRONMENTAL PROTECTION
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Problems solved by technology
Therefore, the micropores of the prior art aeration diaphragm are easy to tear and the service life is not long, which has objectively existed on the diaphragm microporous aerator for a long time, and has become a major obstacle restricting popularization.
[0003] Secondly, the micropores of the prior art aeration membrane are closed when they are not working, using the resilience of the rubber itself. However, in actual use, the membrane will gradually lose its elasticity under long-term tension, resulting in a decrease in the closing effect of the pores. However, the aerator works at a certain water depth, so there will still be a problem of water backflow, which is the second defect of the diaphragm microporous aerator
Method used
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Embodiment 1
[0023] Embodiment 1: see figure 1 , 2 , 3, 5, 6, the disc type microporous aerator of the present invention (used state), comprises rubber diaphragm 1, diaphragm support plate 3, rubber connector 4, pipeline connector 5, air supply pipe 6. Wherein the surface of the rubber diaphragm 1 has nipples or mushroom-shaped protrusions 2 arranged in concentric circles, and there are customary micropores 7 on the nipples or mushroom-shaped protrusions.
[0024] Aeration diaphragm molding die ( Figure 5 , 6 ), there is an upper mold 8 and a lower mold 9 with a diaphragm cavity space 10 in the middle of the upper and lower joints. The diameter of the mushroom head is 2-3mm, and the cavity surface of the lower mold corresponds to the concave cavity of the upper mold. The root is fixed with a diameter of 0.5-1mm protruding out of a circle to form a hole needle 9.1, and its height is slightly lower than the surface of the nipple 0.2mm.
[0025] The production of aeration membranes is to...
Embodiment 2
[0026] Example 2: see Figure 4 , as in Example 1, the nipples or mushroom-shaped protrusions on the aeration membrane are arranged in an involute manner.
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The invention relates to a micropore aerator aeration membrane, a molding method and mold improvement; the invention is characterized in that the aeration surface of the elastic aeration membrane has a plurality of bulge papillae, the aeration through pore is communicated with each bulge papilla, and the membrane is formed by molding in a mold once and for all. Part of the micropore is thickened,and the micropore is casted at the same time with the formed membrane, no irregular edge mechanically punched by a tool, micropore tensile stress performance is greatly improved, aeration micropore is opened naturally, aeration deformation volume of the membrane is reduced, tear strength performance of micropore is greatly enhanced, thus ensuring uneasy tear in long-term use; in addition, not only bulge papillae are arranged at the micropores on the aeration membrane, but also a membrane between two adjacent bulge papillae is not thickened, and the micropores are normally open, increase of aeration resistance is smaller. By using the aeration membrane once forming method and the mold, the original twice forming is changed into once forming, thus reducing working time wasted in intermediate circulation, and enhancing membrane production efficiency by at least 80%.
Description
technical field [0001] The invention is an improvement on the aeration membrane of the membrane type microporous aerator, a molding method and a mould, and in particular relates to an aeration membrane of the microporous aerator whose micropores are not easily torn. Background technique [0002] Diaphragm microporous aerators, as described in Chinese patents CN2088105, CN2339573, CN2550361, CN2559644, etc., require high pore density for aeration. In addition, in order to make the micropores effectively close and prevent water from pouring back into the aerator when the aeration is stopped, the micro-through holes on the aeration membrane in actual production are all secondary processing methods of punching holes with cutters. That is, the rubber aeration diaphragm is molded first, and then the formed diaphragm is put into a conical punching needle mold with a flat blade with a width of 0.8-1mm, for example, and the aeration micropores are cut on the diaphragm, such as the Ch...
Claims
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IPC IPC(8): C02F3/12B29C33/42
CPCY02W10/10
Inventor 赵勇吴鹰任玉斌黄东辉
Owner JIANGSU YULONG ENVIRONMENTAL PROTECTION