Device capable of ensuring safety of screw lifting system of whole cover of high-temperature water channel

Abstract

The invention discloses a device capable of ensuring safety of a screw lifting system of a whole cover of a high-temperature water channel, and belongs to the field of quick-frozen prepared food curing machining equipment. The device comprises a high-temperature water channel body, the whole cover, a whole cover supporting cross beam, a screw lifting supporting frame, a lifting power motor, a drive motor, a turbine commutator, a connecting rod shaft, a screw, a base, a flat side nut, a nut fixing sleeve, a screw lifting supporting frame and a limiting contact type stroke switch. Through the structure, the whole cover can be controlled to lift at the constant speed, precise positioning can be achieved, the cover cannot descend at the emergent speed, the work manner can be ensured, when an upper limiting contact type stroke switch or lower limiting contact type stroke switch fails, the motor can continuously rotate, and the lifting system, the whole cover an the water channel cannot be subject to hard damage.

Description

technical field [0001] The invention relates to a device for ensuring the safety of a screw rod lifting system for an integral cover of a high-temperature water tank, and belongs to the field of quick-frozen prepared food ripening and processing equipment. Background technique [0002] In the field of quick-frozen prepared food and even the entire food processing field, water tanks with steam as the heat source and water as the medium abound, but most of these devices face a common problem: after the water in the water tank is heated to high temperature, a large amount of hot steam will flow from the water tank. Overflow, the reason is that conventional sink covers basically exist in the form of multiple independent covers, and there are gaps between the covers and between the covers and the edge of the sink. The workload and difficulty of operation have increased significantly, so the industry has been developing a water tank cover model that can prevent steam from escaping...

AI Technical Summary

Problems solved by technology

[0002] In the field of quick-frozen prepared food and even the entire food processing field, water tanks with steam as the heat source and water as the medium abound, but most of these devices face a common problem: after the water in the water tank is heated to high temperature, a large amount of hot steam will flow from the water tank. Overflow, the reason is that conventional sink covers basically exist in the form of multiple independent covers, and there are gaps between the covers and between the covers and the edge of the sink. The workload and difficulty of operation have increased significantly, so the industry has been developing a water tank cover model that can prevent steam from escaping and is easy to operate. By referring to other similar food thermal processing equipment, an integral heat preservation cover combined with a water seal has basically been formed. However, because the material of the cover is stainless steel, the overall weight is heavy, and the cover cannot be lifted manually, only by mechanical force. Currently, the commonly used lifting methods include wire cable lifting, chain lifting and screw rod lifting.

[0003] Among them, the steel wire cable lifting method is easy to break due to the force or friction of the cable, which has a greater safety risk. The chain lifting method is because the chain is a linear transmission force. Once the motor fails, the cover will automatically slide down quickly, which is a great safety risk. And the above The two methods generally use two motors to control the lifting of two points, because there are small differences in the speed of the motors, so there is often an imbalance in the lifting process of the cover, which can easily lead to deformation and damage of the cover, while the conventional screw lift The device can effectively avoid the above two problems, but since the lifting of the screw rod connects all the cover to be lifted, the transmission bearing and the positioning bearing in series at the same time by a screw rod, all of which are hard connections, once the cover has been lowered to the minimum and When the water tank touches or rises to the highest level and contacts the upper bracket structure, the motor does not stop running due to the failure of the travel switch. At this time, the screw continues to rotate, and the cover cannot be lowered or raised due to huge resistance. The function will inevitably damage the relevant hardware in the hard connection system, causing losses, and this damage is irreparable. Therefore, in order to ensure the safety of people and equipment itself, it is necessary to develop more secure equipment

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