Combined refrigeration and heating devices for food industry and use methods thereof

A combined refrigeration and heating device for food industry, comprising:

• a refrigeration device connected with a heating device through a waste heat recovery and utilization system, wherein
• the heating device is provided with a heating cavity, a first conveyor belt being disposed in the heating cavity, a top surface of the heating cavity being provided with a heating plate, the heating plate being configured to cooperate with the waste heat recovery and utilization system, and a left end and a right end of the heating cavity being provided with a slanting cavity, respectively;
• the slanting cavity disposed at the right end of the heating device is provided with a second conveyor belt, and a right end of the second conveyor belt corresponds to the refrigeration device;
• a left end of the refrigeration device is provided with a slanting cavity, and the slanting cavity corresponds to the right end of the second conveyor belt;
• a refrigeration system is disposed in the refrigeration device, and the refrigeration system cooperates with the waste heat recovery and utilization system;
• and
• more than two blocking devices are disposed in the slanting cavity disposed at the left end and the right end of the heating device and the slanting cavity disposed at the left end of the refrigeration device, respectively, wherein
• for each of the more than two blocking devices,
• the blocking device includes a baffle plate, a middle of the baffle plate is provided with a through-groove, a top end of a right side of the baffle plate is hinged with a plurality of blocking strips through a plurality of torsion springs, respectively, the plurality of blocking strips are capable of blocking the through-groove, a top end of the baffle plate is connected with a plurality of connecting blocks, the plurality of connecting blocks are disposed in a long groove, the long groove is disposed in a mounting plate, the plurality of connecting blocks are configured to penetrate through the long groove and to be connected with a plurality of linear actuators, and the plurality of linear actuators are capable of driving the baffle plate to move along the slanting cavity disposed at the left end and the right end of the heating device and the slanting cavity disposed at the left end of the refrigeration device;
• the plurality of linear actuators are fixedly mounted on the mounting plate, a mounting cavity is provided above the slanting cavity disposed at the left end and the right end of the heating device and the slanting cavity disposed at the left end of the refrigeration device, respectively, a partition plate is provided between the mounting cavity and the slanting cavity disposed at the left end and the right end of the heating device and between the mounting cavity and the slanting cavity disposed at the left end of the refrigeration device, respectively, the mounting plate is mounted on the partition plate, and the plurality of linear actuators are disposed in the mounting cavity.