chiller momwe angagwirizane ndi makina opangira nkhungu ndi jakisoni

Monga tonse tikudziwa, chillers amagwiritsidwa ntchito kwambiri, ndipo chimodzi mwa izo ndi kuzizira kwa nkhungu zapulasitiki. Kwenikweni, ambiri zopangira pulasitiki nkhungu ndizofunikira kwa chiller, ndiye lero ntchentche ikudziwitsani mwatsatanetsatane. Momwe mungasankhire chiller choyenera popanga zisankho. Kuphatikiza apo, kuyambira makina opangira jekeseni nthawi zambiri amagwiritsidwa ntchito limodzi ndi ozizira, sizingalephereke kuwadziwitsa pano.

Choyamba, mmene kusankha chiller

Pamenepo, Kukula ndi kutentha kwa kutentha. Kutentha kumasamutsidwa kuchokera ku pulasitiki yosungunuka kupita ku nkhungu, ndiyeno kuchokera ku nkhungu kupita kumadzi ozungulira ozizira apakati-ayezi. Kutentha kochepa kokha kumalowa mumlengalenga ndi kupanikizika kwa makina opangira jekeseni. template. Monga aliyense akudziwa, zozungulira zingapo za pulasitiki zimagwiritsidwa ntchito poziziritsa, nthawi zina amawerengera zambiri kuposa 80% cha pulasitiki akamaumba mkombero. Chifukwa chake, m'pofunika mwamtheradi kulamulira nthawi yozizira pang'ono. Mwachitsanzo, kuzungulira kwa nkhungu nthawi zambiri 20 masekondi. Ngati madzi mu kuzirala nsanja m'malo ndi ayezi madzi kwaiye ndi chiller, Itha kufupikitsidwa 16 masekondi. Ngakhale ndi okwera mtengo kwambiri kusankha ndi kupatsa chiller pachiyambi, ikhoza kuonjezera mtengo wotulutsa ndi 20%, ndipo akhoza kupeza phindu lalikulu pakupanga kwa nthawi yayitali.

Choncho, mmene kusankha madzi ayezi mphamvu? Kuchokera pamwamba, tikhoza kudziwa kuti zimagwirizana ndi kutentha kwapadera kwa zinthu zomwe zimapangidwira, kutentha ndi kulemera kwa kusungunuka pamene guluu wasungunuka, ndi kutentha pamene mankhwala omalizidwa akugwetsedwa.

Nthawi zambiri, jekeseni akamaumba nkhungu utakhazikika, ndipo kuthamanga kwa madzi oundana kumasankhidwa 0.1 ku 0.2Mpa kuti mukwaniritse zomwe mukufuna. The microcomputer full-function chiller akhoza kukwaniritsa pempholi. Pamene pempho lopanikizika ndilokwera kuposa 0.2Mpa, dongosolo lina chofunika kuti atsogolere kusankha lolingana kukakamizidwa. The chiller pompa madzi pofuna kukwaniritsa zosowa za dongosolo madzi.

Tebulo lolumikizana pakati pa kutuluka ndi m'mimba mwake:

Momwe mungagwirizanitsire chiller ndi nkhungu zapulasitiki ndi makina opangira jakisoni?

Njira yowerengera madzi oundana ndi mphamvu yofunikira ndi nkhungu: q=w×c×t×s

Mu fomula: q ndi mphamvu yofunikira ya madzi oundana kcal/h;

W ndi pulasitiki zopangira zolemera kg/h;

C ndi kutentha kwapadera kwa zipangizo za pulasitiki kcal/kg ℃;

T ndiye kusiyana kwa kutentha kwa ℃ pakati pa kutentha kosungunuka ndi kutulutsa komalizidwa;

s ndiye chinthu chachitetezo (kawirikawiri 1.35—2.0). Makina amodzi akamafanana, Mtengo wocheperako umasankhidwa, Ndipo mtengo waukulu umagwiritsidwa ntchito ngati choller amafanana ndi mawu angapo. Mwachitsanzo, Pamene ozizira ozizira atasankhidwa, s alinso Iyenera kukhala yokulirapo moyenerera.

Mwachitsanzo: nkhungu imapanga pp zomalizidwa, ndipo mtengo wotulutsa pa ola limodzi ndi pafupifupi 50kg. Chofunikira chozizira ndi chiyani? Ndi saizi yanji yowotchera madzi iyenera kukhala ndi zida? q=50×0.48×200×1.35=6480 (kcal / h); mphamvu yozizira ya 6480kcal/h pa ola chofunika, ndi ls203s chiller angagwiritsidwe ntchito.

M'kati kusankha chillers mu kuchita, it is difficult to obtain well-compared data. Malinga ndi zaka zathu zapitazo zakukonzekera komanso zothandizira malonda, t=200℃, which is an average value of many commonly used products after years of calculation.

Ngati pali bwalo lotentha guluu wolumikizidwa ndi nkhungu, the energy of the hot glue lane should also be included in the calculation of the cooling capacity. Nthawi zambiri, the hot glue lane is in kw, and the unit should be converted to kcal/h when calculating, 1kw=860kcal/h. Ngati madzi opezeka ku fakitale ndi wokwanira, Kutentha kumakhala kotsika, ndipo mtengo wake ndi wotsika, there is no need to use a chiller at this moment. This is generally impractical unless the factory can be located near a large lake with a low water temperature. The other is to use urban areas. Deep well water supply meets the needs of temperature and flow, Koma mtengo wake umakhala wokwera kwambiri. This method can be used for test equipment, but for factories, it is impractical to do so.

2. Ice water temperature difference

The temperature of the plastic mold cooling fluid (madzi oundana) nthawi zambiri amasintha kwambiri chifukwa cha zinthu zopangira ndi mawonekedwe a chinthu chomalizidwa. Mwachitsanzo, kwa ma beak a polystyrene okhala ndi mipanda yopyapyala, nkhungu zimafuna kutentha kwa madzi oundana kukhala pansi pa 0 ° C; muzochitika zina zambiri, Kutentha kwa madzi oundana omwe amafunsidwa ndi nkhungu kumakhala pamwamba pa 5 ℃, makina opangira ma microcomputer odzaza ntchito amatha kupereka madzi oundana pamwamba pa 5 ℃, ndi otsika kutentha wanzeru kutentha chiller akhoza kukwaniritsa pempho pansipa 5 ℃ ndi pansipa 0 ℃.

Kusiyana kwa kutentha kwa madzi oundana pakhomo ndi kutuluka kwa nkhungu pulasitiki nthawi zambiri imayikidwa molingana ndi zofunikira za mankhwala omalizidwa. Nthawi zambiri, kusiyana kwa kutentha kwa 3-5 ° C ndikoyenera kwambiri, koma nthawi zina kusiyana kwa kutentha kumafunikanso kukhala 1-2 ° C. Chocheperako kusiyana kwa kutentha, zikutanthauza kuti kutentha komweko kumachotsedwa, kukulirakulira kwa madzi oundana kumafunika, ndi mosemphanitsa. Mwachitsanzo: pamene kusiyana kwa kutentha kuli 5°C, Kuthamanga kumafunika 60l, ndi pamene kusiyana kwa kutentha kuli 2°C, kuchuluka kwa madzi kumafunika 150l.

3. Kuthamanga kwa madzi oundana

Kuyenda kwa madzi oundana ofunikira kuti nkhungu ya pulasitiki ikhale yogwirizana mwachindunji ndi kutentha komwe kumayenera kuchotsedwa ndi nkhungu ndi kusiyana kwa kutentha pakati pa madzi oundana mkati ndi kunja kwa nkhungu.. Mwachitsanzo: Kutenga kutentha kwa 6480kcal/h kutali ndi nkhungu, ngati kusiyana kwa kutentha kuli 3 ℃, ndi kuchuluka kocheperako komwe kumafunikira? Madzi oundana akuyenda q=6480÷3÷60=36 (l/mphindi).

Chachinayi, chiphunzitso cha khalidwe la madzi oundana

Kufewetsa kwa madzi ndi funso lomwe silinganyalanyazidwe pogwiritsira ntchito chiller. The ph value of water also needs to be continuously observed. It is best that the ph value should be equal to 7, and the ph value greater than 7 will cause terrible corrosion. If the method is not adopted, fouling will form in the evaporator and the mold, which will act as heat insulation. When severe, the energy conversion effect will be reduced by 30%. Obviously this requires thinking about the softening of hard water. The most effective way is to equip an electronic hard water softener in the system. Such a softener is planned to be manufactured based on the principle of exchange. Depending on the flow rate, different standard softeners can be equipped, and they can be directly connected to the circulating water pipeline. Nthawi zambiri, the cost of installing a water treatment softener will not be too high. Ikhozanso kutenga nawo mbali pakuchotsa ndalama zina mu dongosolo lozungulira kwa nthawi inayake. Wothandizira masikelo.

Asanu, makina a madzi oundana akuyenda ndi kuthamanga

Nthawi zambiri, jekeseni akamaumba nkhungu utakhazikika, ndipo kuthamanga kwa madzi oundana kungasankhidwe 0.1 ku 0.2mpa, ndipo pempho likhoza kukwaniritsidwa, ndipo makina a microcomputer akugwira ntchito mokwanira amatha kukwaniritsa pempholi. Pamene pempho lamphamvu ndilokwera kuposa 0.2mpa, pulani ina ikufunika kuti atsogolere kusankha kuthamanga lolingana Kuchokera pa mpope wa madzi kukwaniritsa zosowa za dongosolo madzi..

6. Kuziziritsa kwa hydraulic mafuta ndi mbiya kudyetsa gawo

Nthawi zambiri, gawo la hydraulic mafuta ndi mbiya zodyetsera zimagwiritsa ntchito madzi ozizira a nsanja yamadzi kuti aziziziritsa, chifukwa iyi si njira yabwino yokha, ndi zotsika mtengo, komanso ndi ndalama kwambiri. Pokhapokha ngati pali zofunikira zenizeni za kutentha kwake, ice water can be used for it. Cool down.

VII. Insulation of ice water pipes

The ice water pipeline must be insulated, because the pipeline insulation can not only prevent the severe loss of cold capacity, but also prevent the condensation formed on the outer wall of the pipe. Mwachitsanzo: the temperature of ice water is 10℃, the ambient temperature is 30℃, the heat radiation of a 25-meter-long metal pipe with a surface area of ​​25m2 can reach 750kcal/h, which is almost 10% of the cooling capacity of a 3hp compressor, 5hp The compressor produces 6% of the cooling capacity.

The connection between the chiller and the plastic mold is generally selected to be connected with a reinforced hose. Since such a hose has the function of heat insulation, but the length exceeds 5m, it is necessary to consider appropriate heat preservation and heat insulation. In the application of the chiller, it is closely related to another equipment, ndiye, the injection molding machine. Since it is so relevant, how to choose an injection molding machine, let us introduce you:

How to choose a chiller and an injection molding machine?

The domestic vertical and horizontal injection molding machines are matched when the cooling water condensation temperature of the water-cooled chiller is below 35 madigiri (the condensation temperature of the air-cooled chiller is below 43 madigiri) when the domestic vertical and horizontal injection molding machines are used at normal ambient temperature.

1. The first method:

The 1hp water-cooled chiller can be equipped with an 80-ton clamping force injection molding machine with a temperature control of 5-10 madigiri;

The 1hp water-cooled chiller can be equipped with a 100-ton clamping force injection molding machine with a temperature control of 10-15 madigiri;

The 1hp water-cooled chiller can be equipped with a 120-ton clamping force injection molding machine with a temperature control of 15-20 madigiri;

(The matching of the air-cooled chiller is 0.8 times that of the water-cooled chiller, ndiye, the 1HP air-cooled chiller can be equipped with a 64-ton injection molding machine with a clamping force. The temperature is controlled at 5-10 degrees.)

1. The second method:

The 1HP water-cooled chiller can be equipped with an injection molding machine with a single injection volume of 10QZ, and the temperature is controlled at 5-10 madigiri.

Injection volume 1QZ=28.5g

The above formula is the result summarized by the thoughts. In addition to using the above formula, the salesperson should consider the actual situation and select the appropriate chiller.

1. Matching of chiller and cooling tower:

According to previous practice, a 1HP chiller needs a 1.2-ton cooling water tower to take away the heat generated by the chiller.

Ngati muli ndi mafunso pa jekeseni akamaumba,plz khalani omasuka kutifunsa,tidzakupatsani utumiki wabwino kwambiri!

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