Вестник МГТУ. 2020, Т. 23, № 3.

Вербицкий С. Б. и др. Конструкция, расчет и применение. Table 1. Specifications o f domestic equipment Таблица 1. Технические характеристики отечественного оборудования Parameters Unit Values o f parameters Model L5-FM2-U-150 FMV-0,15 Ya5-FFV 1 Capacity kg/h 11000 1000 600 2 Geometrical volume l 150 150 80 3 Nominal power kW 3.0 5.2 2.0 4 Rotation frequency o f working bodies -i s 0.52 - - 5 Dimensions: mm length 2940 1220 1200 width 965 825 670 height 1330 1200 1475 6 Required area 2 m 2.26 - - 7 Weight kg 490 500 200 The vacuum system o f the meat mixer (vacuum pump, vacuum trap, regulating devices, vacuum lines), according to7, must be air-tight. The norms stipulate that a vacuum in the working cavity from 0.025 to 0.040 MPa should be achieved within the period from 8 to 30 s. It also provides for automatic shutdown o f the vacuum pump upon reaching the required vacuum depth. After switching off the vacuum pump, the decrease in the vacuum value should not exceed 10 % o f the achieved value within 5 min. Vacuum mixers are much more expensive than atmospheric mixers due to the need to equip the machine with elements o f a vacuum system and a massive sealed cover, as well as due to the complication o f other units associated with ensuring the tightness o f the working cavity. On the other hand, vacuumation o f ground meat while mixing is economically justified, as it allows more efficient filling o f sausage casings and improve the quality o f finished products. The vast majority o f vertical type meat mixers on the domestic market are imported (Table 2) and belong to vacuum machines, however, atmospheric devices are also produced by machine-building firms8. Table 2. Technical characteristics o f foreign equipment Таблица 2. Технические характеристики зарубежного оборудования Parameter Unit Values o f parameters Country Austria Germany Germany Manufacturer LASKA RUHLE STEPHAN Model ME 130 MTR 50 MTR 75 VM 100 1 Capacity l 130 130 150 125 2 Geometrical volume kW 4.0 1.1 1.3 1.5 3 Nominal power -i s - - - 0.33 4 Rotation frequency o f working bodies mm Dimensions: 1150 1050 1150 1080 length 750 800 800 1000 width 1150 1200 1250 1260 height kg 500 200 220 150 5 Required area 6 Weight The use o f ground meat mixers with temperature control in the working bowl is not typical for the domestic practice o f meat processing. The use o f complex and expensive devices with forced cooling or heating o f the mixed masses is justified only at large enterprises with special production specialization. However, vertical type meat mixers with working bowl cooling are widely represented in our market and are purchased by meat processing enterprises as universal devices applicable both for mixing minced meat and for massaging meat raw materials. 7 Installations and equipment for meat industry. Machines for mixing ground meats. Basic parameters, technical requirements and methods of testing: DSTU 7511:2014. ^ i v , State Enterprise "Ukrainian Research and Training Center of Standardization, Certification and Quality", 2014. 15 p. 8Baureihen zeichnen sich durch schnelle Einsatzbereitschaft aus, 2017. Fleischwirtschaft, 12, p. 67. 228