Ụkpụrụ na ụdị teknụzụ na-emepụta ụfụfụ

What is foam generator?

Foaming machine, also known as foam generator, is a kind of foam equipment that makes foaming agent reach a certain concentration of aqueous solution. The foaming agent itself cannot automatically become a foam, it must pass the mechanical action of the foaming machine to become foam.

What is the principle of the foam generator?

N'agbanyeghị ihe na-emepụta ụfụfụ, Ụkpụrụ bụ isi nke ịfụfụ bụ ịmebata ikuku n'ime ihe ngwọta na-emepụta ụfụfụ. Ụdị mgbanwe dị iche iche dị iche iche na-ewebata gas, ya mere mmetụta dịkwa iche.

Enwere ihe abụọ dị mkpa maka ịmepụta ụfụfụ, one is foaming agent solution, na nke ọzọ bụ ikuku, both of which are indispensable. Na-enweghị ngwọta onye na-afụ ụfụ, ihe nkiri mmiri mmiri gbara gburugburu gas agaghị etolite ma ọ gaghị enwe afụ. Na enweghị gas, naanị ngwọta na-eme ụfụfụ enweghị ike ịmepụta afụ.

Na usoro nhazi nke afụ, ihe ngwọta na-afụ ọnụ bụ ihe na-ekesa, gas bụ oge agbasasịa, na gas na-agbasasị na mmiri mmiri na-etolite egosipụta, na mgbe ahụ, ọtụtụ afụ na-etolite ụfụfụ. Na mgbakwunye na isi ihe dị mkpa nke ịfụ onye ọrụ arụmọrụ, ntinye nke gas n'ime ihe ngwọta na-afụ ụfụ bụ ihe ọzọ dị mkpa. Ụkpụrụ nke onye na-emepụta ụfụfụ bụ ịmebata gas n'ime mmiri mmiri, ya bu, onye na-emepụta ụfụfụ na-eji usoro ụfọdụ ewebata gas n'ime mmiri mmiri. Igwe ụfụfụ dị iche iche nwere ụzọ dị iche iche ewebata gas. N'izugbe, enwere ọtụtụ ụzọ isi webata gas n'ime igwe ụfụfụ:

(1) Mpempe akwụkwọ na-agbagharị nwayọọ nwayọọ na-ebute gas

Nke a bụ usoro ewebata gas ozugbo n'ime ngwa agha (ma ọ bụ ihe slurry) agwakọta ya na onye na-emepụta ụfụfụ simenti. Mgbe igwekota agụba na-akpali slurry, ikuku na-abanye na slurry na igwe igwe igwe. Na mgbakwunye, A na-etinye nnukwu ikuku n'ime slurry mgbe slurry na-atụgharị, na akụkụ nke ikuku na-ebute slurry site na ciment na mkpokọta. Nchikota nke atọ bụ ngụkọta nke ikuku na-abanye na slurry. N'etiti ha, ikuku na-ebute slurry site na agụba na-akpali akpali na ikuku ọbọp site na agụba na-atụgharị slurry ahụ nọ n'isi ahụ..

Mgbe ikuku na-abanye na slurry, mmiri mmiri nwere ihe na-emepụta ụfụfụ surfactant gbara ikuku gburugburu, na-eme ihe nkiri mmiri mmiri okpukpu abụọ-electron na interface n'etiti ikuku na mmiri mmiri, na n'ikpeazụ na-etolite egosipụta na slurry n'ụdị ikuku-na-mmiri mmiri.

N'ihi na ngwa ngwa ntụgharị ọsọ nke agụba na obere gas ewepụtara n'ụzọ dị otú a, ọnụ ọgụgụ nke egosipụta dị ntakịrị, mmetụta ụfụfụ adịghị mma, na arụmọrụ dị ala.

(2) Ugbo na-agbagharị ọsọ ọsọ na-ewebata gas

Nke a bụ ụzọ isi webata gas n'ime ihe ngwọta na-efe efe site na ịdabere na agụba na-agbagharị ọsọ ọsọ.. Ntinye nke gas na-adabere na ike nke eriri na-atụgharị. Mpempe akwụkwọ nke ụdị a na-achọkarị ntụgharị ọsọ ọsọ, the speed should be> 700 rpm, n'ozuzu n'etiti 700 na 1400 rpm, and the peripheral speed of the impeller end should be> 20 m/s iji nweta nsonaazụ na-eju afọ. Otu nnukwu ọsọ dị elu nwere ike ikpughe ihe mgbochi na mmiri mmiri, kọntaktị na ikuku, ma webata ikuku. Ọ bụrụ na ọsọ dị oke ala, a gaghị ekpughe ihe mgbochi ahụ na mmiri mmiri, na ọnụ ọgụgụ ikuku na-agbapụta ga-adị ntakịrị. Ọsọ kwesịrị ekwesị kwesịrị ịdị ala karịa ka a na-ekpughe ihe mgbochi mgbe mmiri mmiri na-atụgharị.

The basic principle of impeller bleed air is as follows:

When the impeller rotates at a high speed, it drives the cement foaming agent solution in the foaming cylinder to rotate, forming a rolling circulation and generating a large vortex. N'oge a, the gas-liquid two-phase particles located at the gas-liquid interface at the top of the blowing agent solution will accompany them down and descend to the bottom of the vortex in a rapid spiral shape, forming a turbulent flow zone at 2.5-5 cm of the impeller edge. In this area, the gas-liquid two-phase particles are subjected to the strong shear and impact of the impeller, and are dispersed into fine dispersions, which quickly realizes the gas-liquid mixing, makes the gas uniformly dispersed in the liquid, and realizes the gas Introduce. Its introduction efficiency is related to various technical factors such as the speed, the diameter of the impeller, the distance between the impeller and the foaming tube, and the shape of the impeller blades. It is not determined by a single speed. High-speed impellers have air-entraining effects, but the efficiency, mmetụta, and energy consumption are different.

(3) Use of pressure to introduce gas.

This is currently the most commonly used advanced air-entrained foaming method at home and abroad. Ọ bụkwa usoro mmụta sayensị karịa ikuku. It is the core of foam concrete high-pressure and medium-pressure foam generator technology.

Ụzọ abụọ a kpọtụrụ aha n'elu na-adị nwayọọ na enweghị isi, na dayameta afụ buru ibu, karịsịa enweghị ike ịchịkwa dayameta afụ. Ọ na-adabere kpamkpam na randomness nke igwe ụfụfụ, na enweghị ike ekwe nkwa na obere afụ dayameta na otu ụfụfụ. Ihe ngosi teknụzụ kachasị dị egwu. N'otu oge ahụ, ọnụ ọgụgụ nke ụfụfụ siri ike ịchịkwa.

Iji dozie nsogbu ndị dị n'elu nke ọma, usoro ụfụfụ nke na-eme ka nrụgide malitere. Regardless of foaming volume, ọsọ ụfụfụ, or foam diameter and foam uniformity, wdg., ha abanyela n'ọkwa ọhụrụ ma nwee ọganihu dị ukwuu na nkà na ụzụ. Ụkpụrụ ya bụ isi bụ iji ngwá ọrụ dị iche iche nwere ike ịmepụta ikuku ikuku iji tinye ikuku n'ime mmiri mmiri iji nweta ngwakọta otu nke akụkụ abụọ ahụ.. N'okpuru nrụgide nkịtị, ọ na-esiri ikuku ike ịbanye na mmiri mmiri, ma n'okpuru ụfọdụ nrụgide, ọ na-adị mfe. Nrụgide ikuku a abụghị naanị na-etinye gas n'ime mmiri mmiri, ma na-agbanyekwa mmiri mmiri n'ime gas. N'ezie, ọ na-etinye nrụgide n'otu oge. N'ụzọ nke a, ngwakọta nke akụkụ abụọ ahụ ga-adị ngwa ngwa, oru oma, uwe, ma nwee ezigbo afụ, nke na-ezute ezigbo teknụzụ chọrọ maka ụfụfụ.

There are two main types of pressure equipment used in our country, one is an air compressor and the other is a blower. The air compressor produces high pressure, and the blower produces medium low pressure. Ya mere, the foaming effect of the air compressor is better, and the foaming effect of the blower is slightly worse. Foaming with an air compressor is called a high-pressure foaming machine, and foaming with a blower is called a medium and low pressure foam generator. The foaming quality of the air compressor mainly controls its pressure and displacement, while the foaming of the blower mainly controls its wind pressure and air volume.

Due to the good foaming effect of air compression mechanism, most foaming machines in our country use air compressors. Blower foaming also has many applications in my country, but compared to high-pressure foaming, this foaming method is still rare. The foam produced by high-pressure air foaming has a low water-sucking rate, the bubble diameter is small, dense and uniform, and the quality is high. The foam produced by blast foaming has a slightly larger diameter, and the overall quality is not as good as high-pressure foaming.

(4) High pressure jet introduces gas

This is a foaming method that has been tried in recent years but has not been widely used. The basic principle is to use the strong dispersion force generated by the jet to achieve instantaneous large surface contact between the gas phase and the liquid phase, so that the two are uniformly mixed, and the liquid is entrapped to form a foam. This method does not show any more advantages than high-pressure air foaming, and it needs further exploration and improvement.

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