Leakproof arrangement of a chocolate fountain

A leakproof arrangement of a chocolate fountain, comprising:

• a) a base housing with a motor for driving a transmission shaft;
• b) a support disposed at the top of the base housing, the support having a recessed portion at the center thereof, the transmission shaft passing through the recessed portion and rising above the base housing;
• c) a basin disposed on the support and provided with a through hole at the center thereof, the basin being adapted to receive the melted chocolate, the melted chocolate having a maximal level of h1;
• d) a leakproof device tightly fastened within the through hole of the basin and including:
• i) a base sealed to the periphery of the through hole of the basin;
• ii) a plurality of support frames disposed around the base;
• and
• iii) a shaft sleeve disposed at the center of the base, the joint between the shaft sleeve and the base being tightly sealed without any gaps, the height h2 of the shaft sleeve being greater than the maximal chocolate level h1, the connection end at the top of the shaft sleeve rising above the height h2 of the shaft sleeve;
• and
• e) a cylinder placed into the space defined by the support frames, a screw rod positioned within the cylinder, the screw rod having a hollow tube at the bottom thereof for mounting externally on the shaft sleeve, a connection piece being provided within the bottom of the hollow tube for fitting into the connection end of the transmission shaft such that the screw rod is brought into rotation when the transmission shaft passes through the shaft sleeve.