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CN-121974124-A - Cleaning device and cleaning method

CN121974124ACN 121974124 ACN121974124 ACN 121974124ACN-121974124-A

Abstract

The invention provides a cleaning device and a cleaning method, wherein the cleaning device comprises a superheated water injection unit, a drain pipe and a pressure-locking drain assembly, wherein the superheated water injection unit is arranged inside a cooking tank, is positioned between a material bearing surface and an empty surface of a conveying belt and faces the empty surface, the drain pipe is connected to the bottom of the cooking tank, the pressure-locking drain assembly comprises a first valve and a second valve which are sequentially arranged in the drain pipe along a drain direction, the first valve and the second valve are configured to be opened and closed alternately, a transition bin is arranged between the first valve and the second valve, the cleaning device further comprises a controller, the controller is in communication connection with the first valve and the second valve, and the controller is configured to execute segmented alternate opening or closing of the first valve and the second valve based on preset drain triggering conditions. The invention can more effectively clean, and simultaneously, the cleaning sewage is discharged on the premise of not leaking the internal pressure of the cooking pot by arranging the pressure locking and pollution discharging assembly and utilizing the alternate switch of the two valves.

Inventors

  • REN BO
  • CHEN NINGNING

Assignees

  • 宁波长荣酿造设备有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. A cleaning device for wash the conveyer belt of cooking jar inside in the pressure cooking process of cooking machine, characterized by comprising: The superheated water spraying unit is arranged in the cooking pot, is positioned between the material bearing surface and the empty surface of the conveying belt, is arranged facing the empty surface and is used for spraying superheated water to clean the conveying belt; a drain pipe connected to the bottom of the cooking tank; A pressure-locking blowdown assembly comprising a first valve and a second valve sequentially disposed in the blowdown pipe in a blowdown direction, the first valve and the second valve being configured to be alternately opened and closed for maintaining an internal pressure of the digester during blowdown, Wherein a transition bin for storing water is also arranged between the first valve and the second valve, The cleaning apparatus further includes a controller in communication with the first valve and the second valve, the controller configured to perform a segmented alternating blowdown control based on preset blowdown trigger conditions: When the first sewage discharge triggering condition is met, the first valve is controlled to be opened, the second valve is kept to be closed, sewage is discharged into the transition bin, when the second sewage discharge triggering condition is met, the first valve is controlled to be closed, and after the first valve is confirmed to be closed, the second valve is opened, and the sewage in the transition bin is discharged.
  2. 2. The cleaning apparatus of claim 1, wherein the cleaning apparatus comprises a cleaning device, The pollution discharge triggering condition is a triggering condition based on liquid level; A liquid level sensor in communication connection with the controller is arranged between the sewage drain inlet and the first valve; the first pollution discharge triggering condition is that the liquid level sensor detects that the liquid level reaches a preset high liquid level threshold value; The second pollution discharge triggering condition is that the liquid level sensor detects that the liquid level reaches a preset low liquid level threshold value.
  3. 3. The cleaning apparatus of claim 1, wherein the cleaning apparatus comprises a cleaning device, The pollution discharge triggering condition is a timing triggering condition based on time; The controller is internally preset with a pollution discharge period, and the controller sequentially generates the first pollution discharge trigger condition and the second pollution discharge trigger condition according to the pollution discharge period and a set time interval.
  4. 4. The cleaning apparatus of claim 1, wherein the superheated water spray unit comprises: The hot water pipe is arranged between the material bearing surface and the empty surface of the conveying belt and is arranged along the width direction of the conveying belt; and a plurality of cleaning nozzles which are arranged on the hot water pipe at intervals along the width direction of the conveying belt and are arranged facing the empty surface.
  5. 5. The cleaning apparatus of claim 4, wherein the cleaning apparatus comprises a cleaning device, The hot water pipe is also connected with a superheated water supply unit, and the superheated water supply unit is used for providing superheated water matched with the internal temperature of the cooking pot and is sent into the hot water pipe through a high-pressure pump.
  6. 6. The cleaning apparatus of claim 4, wherein the cleaning apparatus comprises a cleaning device, The cleaning nozzles are staggered on the hot water pipe along the central axis of the hot water pipe.
  7. 7. The cleaning apparatus of claim 6, wherein the cleaning apparatus comprises a cleaning device, The distance between the adjacent cleaning nozzles is 75-150mm along the central axis of the hot water pipe, The distance between the cleaning nozzle and the conveying belt is 50-200mm.
  8. 8. The cleaning apparatus of claim 6, wherein the cleaning apparatus comprises a cleaning device, And an included angle is formed between the adjacent cleaning nozzles along the central axis of the hot water pipe.
  9. 9. The cleaning apparatus of claim 8, wherein the cleaning apparatus comprises a cleaning device, The included angle is 30-45 degrees.
  10. 10. A cleaning method using the cleaning apparatus according to any one of claims 1 to 9, comprising the steps of: a cleaning step, in which superheated water matched with the internal temperature of the cooking pot is sprayed by a superheated water spraying unit to clean the empty surface of the conveying belt in the pressurized cooking process of the cooking machine, and sewage is collected to the sewage drain pipe; A pollution discharge monitoring step of monitoring whether a preset pollution discharge triggering condition is met; a first sewage draining step, when a first sewage draining triggering condition is met, a first valve is opened, a second valve is kept closed, the pressure in the cooking tank is kept, and the cleaned sewage is discharged from the sewage draining pipe, And a second sewage draining step, when the second sewage draining triggering condition is met, opening the second valve after closing the first valve, and draining the sewage to the outside.

Description

Cleaning device and cleaning method Technical Field The invention relates to the technical field of food processing machinery, in particular to a cleaning device and a cleaning method. Background Continuous cooking machines, particularly pressurized continuous cooking machines, are key devices for large-scale cooking and curing of beans, grains and other raw materials in the food industry. During the cooking process, the material is usually carried by a conveyor belt having a mesh structure, continuously moved in a closed cooking pot at high temperature and high pressure, and heated by steam. However, the pressurized cooking process in the prior art has a long-standing problem which cannot be effectively solved by on-line cleaning of the conveyor belt. Particularly, when materials such as soybeans which are easy to produce viscous substances are treated, a large amount of gel substances are produced in the cooking process. These substances are highly viscous and tend to adhere to and clog the mesh openings of the conveyor belt. Once the meshes are blocked, uneven steam penetration can be caused to influence the uniformity of the cooking effect, and simultaneously, the cooked raw materials are easy to be excessively wet and sticky to influence the quality of subsequent processes such as starter propagation and the like. At present, a common treatment mode in the industry is to purge the conveyor belt by high-pressure steam, and high-pressure steam with a pressure of 0.5-3BAR higher than the cooking pressure is generally adopted for purging. However, the method has the obvious defects that firstly, the physical impact force of steam is limited, gel substances with strong viscosity are difficult to thoroughly remove, and in addition, the excessive steam temperature can excessively cook and even coke substances embedded into meshes of a conveying belt, so that the meshes are completely blocked. Therefore, how to realize effective online cleaning of the conveyer belt without damaging the high-temperature and high-pressure environment in the cooking pot is a technical problem to be solved in the field. Disclosure of Invention The invention aims to solve the technical problem of poor online cleaning effect of a conveyer belt in a pressure cooking machine in the prior art, and provides a cleaning device and a cleaning method capable of efficiently removing a conveyer belt plug on the premise of maintaining stable internal pressure and temperature of a cooking tank. The invention provides a cleaning device, which is used for cleaning a conveyer belt in a cooking pot in the pressurized cooking process of a cooking machine, and comprises the following components: The superheated water spraying unit is arranged in the cooking pot, is positioned between the material bearing surface and the empty surface of the conveying belt, is arranged facing the empty surface and is used for spraying superheated water to clean the conveying belt; A drain pipe connected to the bottom of the cooking pot; the pressure-locking sewage discharging assembly comprises a first valve and a second valve which are sequentially arranged in a sewage discharging pipe along the sewage discharging direction, wherein the first valve and the second valve are configured to be alternately opened and closed for maintaining the internal pressure of the digestion tank during sewage discharging, Wherein a transition bin for storing water is arranged between the first valve and the second valve, The cleaning apparatus further includes a controller in communication with the first valve and the second valve, the controller configured to perform a segment alternating blowdown control based on a preset blowdown trigger condition: When the first sewage discharge triggering condition is met, the first valve is controlled to be opened and the second valve is kept closed so as to discharge sewage into the transition bin, and when the second sewage discharge triggering condition is met, the first valve is controlled to be closed and the second valve is opened to discharge the sewage in the transition bin after the first valve is confirmed to be closed. According to the technical scheme, the superheated water jet unit is arranged, superheated water with physical impact force is used for replacing steam with limited impact force, gel substances adhered on the conveying belt can be stripped and washed away more effectively, meanwhile, superheated water with boiling point exceeding 100 ℃ is used for cleaning, the problem that local supercooling is caused by cleaning the cooking pot by normal-temperature water, so that the cooking effect is affected due to temperature fluctuation is avoided, in addition, by the aid of the locking-pressure pollution discharge assembly and the alternating switch of the two valves, cleaning sewage is discharged on the premise that the internal pressure of the cooking pot is not leaked, the whole cleaning process can be continuously carried ou