Patent GB-394034-A (GB)
Title: Improvements in and relating to apparatus for treating liquids particularly for the pasteurization thereof
IPC: A23L3/16
Filed: 1932-01-06
Abstract: 394,034. Pasteurising liquids. SELIGMAN, R., Lincoln House, Parkside, Wimbledon Common, GOODMAN, H. F., 1, Bracken Gardens, Barnes, and ALUMINIUM PLANT & VESSEL CO., Ltd., Point Pleasant, Wandsworth, all in London. Jan. 6,1932, No. 427. [Class 49.] In apparatus for treating liquids, more especially for pasteurization, by the holding process means are provided whereby at the end of the holding period of any given holder the discharge orifice of that holder is automatically fluidtightly coupled with a pipe by which pipe flow discharge of the treated liquid into a receiver, conduit, &c. is obtained. In addition, the filling pipe at the charging period of any given holder may be automatically coupled in a fluidtight manner with a charging nozzle to permit of pipe flow charging of the holder. In one form, a platform 1, Fig. 1, rotatably mounted on a pedestal 3 carries a number of radial holder compartments disposed within a casing 4 and insulated therefrom by non-conducting material 5. Each holder section 6 has a discharge pipe 12 closed by a valve 13 which, by timed intermittent rotation of the platform 1, is brought on completion of the holding period into relation with a discharge pipe 29 leading to a receiver 55. The platform 1 is rotated by a duplex pneumatic or hydraulic ram 14, Figs. 4 and 5, mounted on a yoke 15 supported on the pedestal 3. The ram consists of opposed cylinders 16, 17 between which a ram member 18 is reciprocated by admission and exhaust of working fluid to and from the cylinders. The rotation of the platform 1 is obtained by the engagement with studs 22 thereon of a trigger 19 pivotally mounted on the ram. At the end of each displacement, the stud 22 engaged by trigger 19 makes contact with a retaining trigger 23 pivotally mounted on the yoke 15 and spring controlled so as to permit the stud 22 on the next movement of the platform 1 to trip by it. The trigger 23 allows slight temporary overrun of the platform, correct alignment of the platform 1 being obtained by a projection 66 on the ram 18 engaging the tail 65 of the trigger 23. The ram 18 is then returned by operation of time control means and a stud 24 thereon operates, by engagement with a notched rocker arm 27, a bell-crank lever, a forked arm 26 of which engages studs 28 on discharge pipe 29 and raises it into fluidtight engagement with discharge pipe 12, rubber packing rings 36, 64 being provided within the pipe 29. A valve lifter 41 simultaneously engages the stem 38 of the discharge valve 13 to lift and open the valve. To control the discharge from the holder 6 in relation to the outflow from the receiver 55, a sleeve 56 having a closed end 59 with outlet apertures adjacent thereto and connected to a float 58 fits over the discharge pipe 29. A trough 63 or independent bowls at the stationary positions may be provided to collect drip from the discharge pipes 12, and also a nozzle through which a sterilizing steam or hot water spray is projected on each pipe 12 before it reaches the discharging position. The holder group has a charging nozzle 61 and a friction brake 67, Fig. 5. In a modification, Figs. 12 and 13 (not shown), the holder group is stationary and the vertically reciprocating pipe, connecting the discharge pipe of each holder in turn to the receiver for the heated liquid, is rotated. In a further form, Fig. 14, sealed pipe flow filling is obtained in a rotating holder system by providing a fixed charging nozzle 85 having a valve 86 and supported by an arm 94. Filling pipes 91 are carried by arms 89 extending from a hub 90 mounted on a flanged sleeve 88 rotating with but axially free in respect to a spindle 87 which rotates with the holders. Vertical reciprocation of the pipes 91 to bring them into and out of fluidtight engagement with charging nozzle 85 is obtained by sleeve 88 engaging under pressure of a spring 95 with cams 92 in a rim 93 depending from arm 94. To permit the pipe 91 to descend clear of the nozzle 85 before beginning to rotate a pin and slot connection is provided between sleeve 88 and hub 90, a spring being provided between the pin which is on the hub and the sleeve to cause the lost motion to be made up when the pipe 91 is free.