Cocoon cooking process using a micro-pressure cocoon cooking machine

Abstract

The present invention discloses a cocoon cooking process of a micro-pressure cocoon cooking machine, which is provided with an infiltration process, a drainage process, a water discharging process, a steaming process, a vacuum cooling process, a vacuum adjustment water absorption protection process and an alarm cocoon discharging process. The infiltration process section adopts a vacuum infiltration method to absorb water into the cocoon cavity to moisten the cocoon layer. Four infiltration time sequences are provided, wherein T1 starts the electromagnetic valve F1, the electromagnetic valve F5, the electromagnetic valve F16 and the water ring vacuum pump, and the water ring vacuum pump is vacuumed. When the vacuum degree of the main tank reaches After reaching the limit, continue to evacuate the main tank for 20 seconds; T2, by controlling the water ring vacuum pump, solenoid valve F1, solenoid valve F5 and solenoid valve F12, realize vacuuming the main tank and letting in permeate water, and end when the liquid level in the main tank reaches the upper edge of the main tank sight glass; T3, by controlling the water ring vacuum pump, solenoid valve F1 and solenoid valve F5, complete the water ring vacuum pump to continue evacuating the main tank in 30~50 seconds to extract the residual air in the main tank; T4, by controlling the solenoid valve F4, complete the main tank re-pressurization in 20~30 seconds.

Description

Technical Field

[0001] The invention relates to the field of cocoon cooking technology, and in particular to a cocoon cooking process using a micro-pressure cocoon cooking machine. Background Art

[0002] Cocoon cooking is a crucial step in the raw silk production process. The quality of cocoon cooking directly impacts the yield, quality, and consumption of silk reeling. Cocoon cooking utilizes water, heat, or additives to appropriately swell and dissolve the sericin in the cocoons over a period of time, weakening the bonds between the sericin particles, reducing adhesion and improving uneven adhesion. This allows the cocoons to continuously and sequentially separate at their adhesion points during reeling and be bundled together to form raw silk. Cocoon cooking is performed using a cocoon cooking machine. Under certain water quality conditions, the cocoon cooking process primarily focuses on temperature and time.

[0003] The long-cage circulating steam cocoon cooking machine is widely used in modern cocoon cooking. The entire cocoon cooking machine is a long, continuous processing device. It consists of a circular, double-chain system that connects over 100 pairs of cocoon cages (each holding 70-100 grams of cocoons) to form a vertical, circulating cocoon cooking process. The upper and lower sections of the chain loop are respectively called the upper and lower troughs. Driven by the chain, each cocoon cage undergoes the cooking process specified in each zone, completing the cooking process according to the cooking process requirements. The upper trough includes a cocoon loading section, an impregnation section, and a preheating section. The cocoon cage turning section between the upper and lower troughs is a high-temperature permeation section. The lower trough includes a low-temperature permeation section, a steaming section, a conditioning section, a protective section, and an outlet section. The cooked cocoons are discharged from each cocoon cage at the outlet on the right end of the lower trough into a transferred cocoon barrel for delivery to the silk reeling machine. After being emptied, the cocoon cages are driven by chains back to the upper cocoon feeding section for a new cocoon cooking cycle. The most commonly used machine has 104 cages and is approximately 14 meters long. It features a main steam gate valve for regulating steam pressure, either manually or automatically. Thermometers are installed in each section. The cooking speed is adjustable. Vacuum infiltration is performed externally.

[0004] The design and structure of a long-cage circulating steam cocoon cooking machine are divided into functional areas: infiltration, cooking, and conditioning and protection. Infiltration is the process of absorbing water into the cocoon cavity, moistening the cocoon layer. The quality of infiltration is closely related to the quality of the cocoon cooking. Currently, the external vacuum infiltration method is widely used. The cocoons are placed in a sealed container and evacuated to a certain level. While the vacuum is being evacuated, water at a specified temperature is introduced to the cocoon cavity to reach a specified level. The pressure is then restored, allowing the water to enter the cocoon cavity and moisten the cocoon layer. Cooking is divided into two steps: water discharge and steaming. Steam perforated pipes are installed in the steaming chamber to discharge water at a specified temperature, which then cooks the cocoon layer, ensuring proper expansion of the sericin and sufficient water content, thereby reducing its adhesiveness. The conditioning and protection section further cooks the cocoons, removes allergenic sericin, gradually cools the cocoon, solidifies the sericin, and protects the outer layer. The conditioning section is structured into three sections: intermediate water, shaking, and static cooking, with temperatures decreasing in sequence. Each section is equipped with a sprinkler pipe and overflow outlet to facilitate temperature reduction. The temperature difference in the conditioning section is closely related to the quality of the cocoon cooking. With the rapid promotion of automatic silk reeling machines in my country, the method of vacuum infiltration outside the machine + long cage circulation cocoon cooking machine is currently widely used for cocoon cooking.

[0005] The main process parameters of the long cage circulation steam cocoon cooking machine are shown in Table A:

[0006] Table A

[0007]

[0008] During the raw silk production process, to determine the quality of silk cocoons, cocoon samples must be tested before process design can be implemented, specifically to determine the quality, yield, and raw material cocoon consumption of raw silk production. Unwinding is a key step in cocoon quality assessment. Cocoon quality testing is conducted at production companies and testing and inspection agencies, typically using 200 or 400 cocoons and several sampling zones. The main processes include cocoon boiling and reeling testing. During factory testing, cocoons are boiled in the production yard, a method known as "attached boiling." Cocoons are then tested on test reeling machines and other equipment to determine key cocoon quality indicators such as silk length, unwinding rate, unwinding refractive index, single yarn fineness, 10,000-meter roughness, and cleanliness. Fiber inspection agencies use small cocoon boiling machines with manual control. The quality of the boiled cocoons can differ significantly from production samples, with large air bubbles in the cocoon cavity. The boiled cocoon quality is lower than factory standards, and thus fails to objectively and truly reflect the cocoon quality level. Summary of the Invention

[0009] The purpose of the present invention is to provide a cocoon cooking process using a micro-pressure cocoon cooking machine, which can ensure that the inner and outer layers of the cocoon are cooked evenly when implementing the "pressure +" method for cocoon cooking, reduce cocoon consumption, reduce the roughness of 10,000 meters of silk, and effectively ensure the cleanliness of raw silk, thereby avoiding the reduction of the grade of raw silk.

[0010] The present invention is realized by the following technical scheme: the cocoon cooking process of the micro-decompression cocoon cooking machine is provided with an infiltration process, a drainage process, a water discharge process, a steaming process, a vacuum cooling process, a vacuum adjustment water absorption protection process and an alarm cocoon discharge process. The infiltration process section adopts a vacuum infiltration method to absorb water into the cocoon cavity to moisten the cocoon layer. Four infiltration time sequences are provided, wherein:

[0011] In the first penetration sequence (T1), the water ring vacuum pump, solenoid valve F1, solenoid valve F5 and solenoid valve FS are started, and the water ring vacuum pump is used to evacuate the main tank. When the vacuum degree of the main tank reaches the limit, the vacuum is continued for 20 seconds, and then the second penetration sequence is entered. During this penetration sequence, the temperature distribution water tank is heated by the solenoid valve F16. The temperature distribution water tank is equipped with a temperature probe (temperature sensor). The temperature distribution water tank is heated to the set temperature (the set temperature range is: 30-38°C, preferably 32°C) and then the heating is stopped.

[0012] The second permeation sequence (T2) is to control the water ring vacuum pump, solenoid valve F1, solenoid valve F5 and solenoid valve F12 to realize vacuuming the main tank and letting the permeate water in. The time setting is to end when the liquid level in the main tank reaches the upper edge of the main tank sight glass.

[0013] The third penetration sequence (T3) is to control the water ring vacuum pump, solenoid valve F1 and solenoid valve F5 to complete the water ring vacuum pump to continue to vacuum the main tank and extract the residual air in the main tank. The time of this penetration sequence is: 30 to 50 seconds;

[0014] In the fourth permeation sequence (T4), the main tank is repressurized within 20 to 30 seconds by controlling the solenoid valve F4.

[0015] To further implement the present invention in a better manner, the following configuration is particularly adopted: during the fourth permeation sequence, the speed of the main tank re-pressurization is adjusted by the gate valve Q1 in front of the electromagnetic valve F4.

[0016] In order to further implement the present invention, the following arrangement is particularly adopted: the drainage process section drains the water after the cocoons in the main tank are infiltrated through the auxiliary tank, and two drainage sequences are set, wherein:

[0017] In the first drainage sequence (T5), the solenoid valves F4 and F9 are controlled to open the main tank and the auxiliary tank simultaneously to release air until the water in the auxiliary tank is completely drained. The water in the auxiliary tank is completely drained within 40 to 50 seconds. In this drainage sequence, the solenoid valve F16 is also used to heat the temperature-controlled water tank to a temperature that meets the requirements for adjusting the water absorption.

[0018] The second drainage sequence (T6) realizes vacuuming and degassing of the main tank by controlling the water ring vacuum pump, solenoid valve F4, solenoid valve F5, and solenoid valve F9. In this drainage sequence, the temperature distribution water tank is heated by the solenoid valve F16 to meet the water temperature required for adjusting the water absorption. The time of this drainage sequence is 5 to 10 seconds.

[0019] In order to better realize the present invention, the following setting is particularly adopted: the water discharge process section forms heat convection under the "decompression + steam" state, acts on the silk cocoons up and down, and discharges the water in the cocoon cavity. Five drainage sequences are set, among which,

[0020] The first water discharge sequence (T7) is to control the water ring vacuum pump, solenoid valve F1, solenoid valve F5 and solenoid valve F19 to realize steam inlet and vacuum pumping in the main tank; the time setting is to adopt the liquid level control mode, and the water discharge sequence ends when the liquid level is seen at the bottom edge of the main tank sight glass;

[0021] The second water discharge sequence (T8) controls the water ring vacuum pump, solenoid valve F5, and solenoid valve F9 to discharge the water discharged from the cocoons in the main tank into the auxiliary tank, and controls the solenoid valve F16 to heat the temperature distribution water tank. The duration of this water discharge sequence is 5 to 15 seconds.

[0022] The third water discharge sequence (T9) controls the solenoid valve F20, water ring vacuum pump, solenoid valve F5, and solenoid valve F9 to allow steam to enter the main tank and vacuumize it, discharging the discharged water into the auxiliary tank. When the temperature in the main tank reaches 66-70°C, the system jumps to the fourth water discharge sequence.

[0023] The fourth water discharge sequence (T10) controls the solenoid valves F20 and F9 to allow steam to flow into the main tank and connect the main tank with the auxiliary tank. When the temperature in the main tank reaches 75-78°C, the system jumps to the next water discharge sequence.

[0024] In the fifth water discharge sequence (T11), the main tank is vacuumed for 5 to 10 seconds by controlling the water ring vacuum pump, solenoid valve F5 and solenoid valve F9.

[0025] In order to better realize the present invention, the following setting is particularly adopted: the steaming process section performs bidirectional steaming on the cocoons under the "decompression + steam" state, so that the cocoon layers are heated evenly, and the cocoon silk sericin swells and softens. Three steaming sequences are set, wherein:

[0026] In the first steaming sequence (T12), the water ring vacuum pump, solenoid valve F5, solenoid valve F1, and solenoid valve F19 are controlled to allow steam to flow into the main tank from the bottom and vacuum the main tank from the top to expel the remaining air in the main tank. When the temperature in the main tank is 2°C higher than that in the fourth water discharge sequence (T10), the process jumps to the next steaming sequence.

[0027] The second steaming sequence (T13) is to wait for 0 to 5 seconds before entering the third steaming sequence;

[0028] In the third steaming sequence (T14), the solenoid valve F19 is controlled to allow steam to flow into the main tank. When the temperature inside the main tank reaches 95-101°C, the process jumps to the vacuum cooling process.

[0029] In order to further implement the present invention, the following configuration is particularly adopted: the vacuum cooling process section performs vacuum cooling on the cocoons in the main tank, which can avoid and reduce the production of deflated cocoons. Two vacuum cooling sequences are provided, wherein:

[0030] The first vacuum cooling sequence (T15) is to control the water ring vacuum pump, solenoid valve F5, solenoid valve F1 and solenoid valve F9 to evacuate the main tank for 5 to 10 seconds after the cooking process, and to heat the temperature distribution water tank by controlling the solenoid valve F16. The time of this vacuum cooling sequence is 5 to 10 seconds.

[0031] The second vacuum cooling sequence (T16) is to evacuate the main tank by controlling the water ring vacuum pump, solenoid valve F5, and solenoid valve F1, and to heat the temperature distribution water tank by controlling the solenoid valve F16. The time of this vacuum cooling sequence is 5 to 10 seconds.

[0032] In order to better realize the present invention, the following setting is particularly adopted: in the vacuum adjustment water absorption protection process section, the cocoon cavity of the cocoon layer absorbs water from the temperature-controlled water tank and water at room temperature in turn, and the water temperature changes gradually, which is beneficial to the protection of the outer layer of the cocoon. Five vacuum adjustment water absorption protection time sequences are set, among which,

[0033] The first vacuum adjustment protection sequence (T17) is to control the water ring vacuum pump, solenoid valve F5, solenoid valve F1 and solenoid valve F12 to realize vacuuming the main tank and feeding water into the temperature distribution water tank (the water temperature in the temperature distribution water tank is the adjustment water temperature at this time). The time is set to 10-15s.

[0034] The second vacuum adjustment protection sequence (T18) is to control the water ring vacuum pump, solenoid valve F5, solenoid valve F1 and solenoid valve F7 to realize vacuum pumping on the main tank and to supply normal temperature water (direct water supply from the water supply main) into the main tank. When the liquid level in the main tank reaches the upper edge of the main tank sight glass or the main tank is full of water, the vacuum adjustment protection sequence ends.

[0035] The third vacuum adjustment protection sequence (T19) completes the main tank re-pressurization in 5 to 10 seconds by controlling the solenoid valve F4;

[0036] The fourth vacuum adjustment protection sequence (T20) controls the solenoid valves F4, F6, and F9 to spray normal temperature water (direct water supply from the water main) on the main tank within 8 to 16 seconds, and then drain the water to the auxiliary tank.

[0037] The fifth vacuum adjustment protection sequence (T21) is to release the main tank for 5 to 8 seconds by controlling the solenoid valve F4.

[0038] In order to better realize the present invention, the following setting mode is particularly adopted: the alarm cocoon-discharging process is provided with four alarm cocoon-discharging timing sequences, wherein:

[0039] The first alarm is the cocoon-emergence timing (T22), which is activated by voice prompts to indicate that the cocoon can be emerged;

[0040] The second alarm cocoon out timing (T23) is to control the solenoid valve F4 to complete the opening of the cover and the removal of the cocoon in 60 to 70 seconds;

[0041] The third alarm cocoon-ejecting sequence (T24) controls the solenoid valves F11 and F9 to replenish the temperature-distributing water tank, connect the main tank with the auxiliary tank, and drain the auxiliary tank. When the temperature-distributing water tank is fully replenished, the third alarm cocoon-ejecting sequence ends.

[0042] The fourth alarm cocoon-discharging sequence (T25) controls the solenoid valve F9, the connection between the main tank and the auxiliary tank, and the drainage of the auxiliary tank for 0 to 30 seconds.

[0043] In order to further realize the present invention, the following arrangement is particularly adopted: the micro-decompression cocoon cooking machine is provided with a frame and a main tank arranged on the frame, a temperature-matching water tank (according to process requirements, the temperature-matching water tank provides two kinds of water: permeation water and adjustment water. During permeation, the temperature-matching water tank is usually called a permeation water tank, and during adjustment, it is usually called an adjustment water tank. The present invention utilizes the same water tank (temperature-matching water tank) to heat to the temperature required by the process at different time periods, such as heating the temperature-matching water tank to 30-38°C (preferably 32°C) during permeation and heating the temperature-matching water tank to 40-50°C (preferably 45°C) during adjustment), a composite piping system, an auxiliary tank, a water ring vacuum pump, an upper composite pipe, two sections of lower composite pipes connected by an electromagnetic valve F9, an air vent pipe, a steam inlet main pipe, a temperature-matching water main pipe, a water supply main pipe and multiple pipelines, the upper composite pipe is connected to one end of the air vent pipe, and the other end of the air vent pipe is placed in the temperature-matching water tank. The air vent pipe is provided with an electromagnetic valve F 4. Gate valve Q1 and check valve G1. The water supply main is connected to the temperature distribution water tank through a pipe equipped with a solenoid valve F11, connected to the upper composite pipe through a pipe equipped with a solenoid valve F6, connected to the first section of the lower composite pipe through a pipe equipped with a solenoid valve F7, and connected to the water ring vacuum pump through a pipe equipped with a solenoid valve FS. The water ring vacuum pump is connected to the auxiliary tank through a pipe equipped with a solenoid valve F5, and the auxiliary tank is connected to the second section of the lower composite pipe through a pipe; the second section of the lower composite pipe is connected to the upper composite pipe through a pipe equipped with a solenoid valve F1. The steam inlet main is connected to the temperature distribution water tank through a pipe equipped with a solenoid valve F16, connected to the upper composite pipe through a pipe equipped with a solenoid valve F20, and connected to the first section of the lower composite pipe through a pipe equipped with a solenoid valve F19. The temperature distribution water main is connected to the first section of the lower composite pipe through a pipe equipped with a solenoid valve F12. The main tank is also connected to the upper composite pipe and the first section of the lower composite pipe through an upper connecting pipe and a lower connecting pipe, respectively.

[0044] In order to further better realize the present invention, the following arrangement is particularly adopted: on the rack, the main tank is arranged above the water ring vacuum pump; the auxiliary tank is arranged adjacent to the water ring vacuum pump, and the auxiliary tank is higher than the water ring vacuum pump in terms of spatial position; the temperature distribution water tank is arranged adjacent to the auxiliary tank, and the temperature distribution water tank is higher than the auxiliary tank in terms of spatial position; in terms of spatial position, the main tank, the temperature distribution water tank and the auxiliary tank are arranged in a herringbone shape.

[0045] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0046] (1) The present invention adopts PLC program control, which improves the control level.

[0047] (2) The present invention uses a composite piping system and PLC-controlled solenoid valves to achieve a combination of various methods (i.e., different combinations of vacuum, steam, and water forming above and below the main tank) according to process requirements. The present invention uses a "vacuum +" method and, through precise control of temperature and time, can achieve uniform cooking of the inner and outer layers of the cocoon, filling the gap in cocoon cooking technology for miniaturized cocoon cooking machines.

[0048] (3) The cocoon cooking quality of the present invention can be greatly improved, which can more truly reflect the quality level of the cocoons and provide a scientific basis for production decisions.

[0049] (4) The present invention saves water, electricity and steam consumption, achieving energy conservation and emission reduction

[0050] (5) The present invention can optimize the cocoon cooking process, reduce the fluctuation of cocoon cooking quality caused by additional cooking on the cocoon cooking machine, and achieve the purpose of improving quality and reducing cocoon consumption.

[0051] (6) The present invention occupies a small area, and the main tank volume can boil silk cocoons of less than 1.5 kg, that is, the amount of silk cocoons that need to be boiled for 400 sample tests in 4 zones. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the cocoon cooking process structure of a micro-decompression cocoon cooking machine.

[0053] Figure 2 This is a three-dimensional schematic diagram of the pipeline of the cocoon cooking process of the micro-pressure cocoon cooking machine.

[0054] Figure 3 This is a schematic diagram of the piping plan of the cocoon cooking process of the micro-decompression cocoon cooking machine.

[0055] Figure 4 This is the connection diagram of the PLC control circuit for the cocoon cooking process of the micro-pressure cocoon cooking machine.

[0056] Figure 5 This is a schematic diagram of the text display interface of the cocoon cooking process of the micro-decompression cocoon cooking machine.

[0057] Figure 6 It is a schematic diagram of the electric control box panel of the present invention.

[0058] Among them, 1-main tank, 2-temperature distribution water tank, 3-main tank sight glass, 4-composite piping system, 5-auxiliary tank, 6-water ring vacuum pump, 7-upper composite pipe, 8-lower composite pipe, 11-vent pipe, 12-rack, A-water supply port, B-drain port, C-steam inlet, D-temperature distribution water drain port, E-steam drain port, a-steam inlet main pipe, b-temperature distribution water main pipe, e-water supply main pipe. DETAILED DESCRIPTION

[0059] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0063] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0065] In order to realize the cocoon cooking process of micro-decompression cocoon cooking machine, a micro-decompression cocoon cooking machine is designed. Figures 1 to 3 As shown, it includes a frame 12, on which a composite piping system 4, a water supply piping system, a steam system, a main tank 1, a temperature-controlled water tank 2, an auxiliary tank 5 and a water ring vacuum pump (S) 6 are arranged. The composite piping system 4 includes an upper composite piping system and a lower composite piping system. The upper composite piping system is respectively connected to the lower composite piping system, the temperature-controlled water tank 2, the water supply system, the steam system and the main tank 1, and the lower composite piping system is respectively connected to the auxiliary tank 5, the water supply system, the main tank 1, the temperature-controlled water tank 2 and the steam system; a main tank sight glass 3 is also provided on the side wall of the main tank 1.

[0066] As an optimal setting scheme, the cocoon cooking process of the micro-pressure decompression cocoon cooking machine is provided with a frame 12, a composite pipeline system 4, a water supply pipeline system, a steam system, a main tank 1, a temperature distribution water tank 2, an auxiliary tank 5 and a water ring vacuum pump (S) 6, wherein the composite pipeline system 4 is mainly composed of an upper composite pipeline system and a lower composite pipeline system. The upper composite pipeline system is respectively connected to the lower composite pipeline system, the temperature distribution water tank 2, the water supply system, the steam system and the main tank 1, and the lower composite pipeline system is respectively connected to the auxiliary tank 5, the water supply system, the main tank 1, the temperature distribution water tank 2 and the steam system.

[0067] Furthermore, as a preferred embodiment, the upper composite pipeline system includes an upper composite pipe 7, a vent pipe 11 and multiple pipes. The upper composite pipe 7 is connected to one end of the vent pipe 11, and the other end of the vent pipe 11 is placed in the temperature distribution water tank 2. A solenoid valve F4, a gate valve Q1 and a one-way valve G1 are provided on the vent pipe 11. The upper composite pipe 7 is also connected to the water supply system, the steam system and the lower composite pipeline system respectively through pipes provided with solenoid valves. The upper composite pipe 7 is connected to the upper connecting pipe of the main pipe 1.

[0068] As a preferred setting scheme, the upper composite pipeline system includes an upper composite pipe 7, a vent pipe 11 and multiple pipes. The upper composite pipe 7 is connected to one end of the vent pipe 11, and the other end of the vent pipe 11 is placed in the temperature distribution water tank 2 (to prevent water from overflowing, the temperature distribution water tank 2 can collect it). The vent pipe 11 is provided with a solenoid valve F4, a gate valve Q1 and a one-way valve G1. When set, the one-way valve G1 is set near the temperature distribution water tank 2, the solenoid valve F4 is set far from the temperature distribution water tank 2, and the gate valve Q1 is set on the vent pipe 11 between the solenoid valve F4 and the one-way valve G1; the upper composite pipe 7 is also connected to the water supply pipeline system through a pipeline provided with a solenoid valve F6, connected to the steam system through a pipeline provided with a solenoid valve F20, and connected to the lower composite pipeline system through a pipeline provided with a solenoid valve F1, and the upper connecting pipeline of the main tank 1 is connected to the upper composite pipe 7.

[0069] Furthermore, as a preferred embodiment, the lower composite pipeline system includes multiple pipelines and two sections of lower composite pipes 8 connected by solenoid valves, wherein one section of the lower composite pipe 8 is connected to the lower composite pipe of the auxiliary tank 5 and the pipe connected to the auxiliary tank through a pipe, and the section of the lower composite pipe 8 is also connected to the upper composite pipeline system through a pipe provided with a solenoid valve; the other section of the lower composite pipe 8 is respectively connected to the steam system, the bottom pipe of the temperature distribution water tank 2 and the water supply pipeline system through a pipe provided with a solenoid valve, and the section of the lower composite pipe 8 is also connected to the lower connecting pipe of the main tank 1 through a pipe, which can realize vacuum, steam and water extraction on the upper and lower parts of the main tank.

[0070] As a preferred setting scheme, the lower composite pipeline system includes multiple pipelines and two sections of lower composite pipes 8 connected by solenoid valves F9, wherein one section of the lower composite pipe 8 is directly connected to the lower composite pipe of the auxiliary tank 5 and the pipe connected to the auxiliary tank through a pipeline, and this section of the lower composite pipe 8 is also connected to the upper composite pipe 7 of the upper composite pipeline system through a pipeline equipped with a solenoid valve F1; the other section of the lower composite pipe 8 is connected to the steam system through a pipeline equipped with a solenoid valve F19, connected to the bottom pipe of the temperature distribution water tank 2 through a pipeline equipped with a solenoid valve F12, and connected to the water supply pipeline system through a pipeline equipped with a solenoid valve F7, and this section of the lower composite pipe 8 is also connected to the lower connecting pipe of the main tank 1, which can realize vacuum, steam and water extraction on the upper and lower parts of the main tank 1.

[0071] Furthermore, as a preferred embodiment, a temperature-controlled water drainage system is provided at the end of the pipe connecting the lower composite pipe 8 and the temperature-controlled water tank 2 .

[0072] As a preferred setting scheme, a pipe (temperature distribution water main b) is led out from the temperature distribution water tank 2, and the pipe has a head end and an end end, wherein the head end of the temperature distribution water main b is connected to the temperature distribution water tank 2, and a temperature distribution water sewage system is set at the end. The temperature distribution water sewage system is mainly composed of a temperature distribution water sewage outlet D and a gate valve Q3. The temperature distribution water main b is also connected to a pipe with an electromagnetic valve F12 by a pipe assembly, so that the temperature distribution water main b can not only serve the water of the lower composite pipe 8 through the temperature distribution water tank 2, but also discharge the sewage in the temperature distribution water tank 2.

[0073] Furthermore, as a preferred embodiment, the water supply pipeline system is provided with a water supply main e, which is connected to the upper composite pipeline system, the lower composite pipeline system, the upper water supply port of the temperature distribution water tank 2 and the water ring vacuum pump (S) 6 through multiple pipelines. The water ring vacuum pump (S) 6 is respectively connected to the auxiliary tank 5 and the water supply main e through pipelines provided with solenoid valves, and a solenoid valve F11 is provided on the pipeline connecting the water supply main e to the temperature distribution water tank 2.

[0074] As an optimal setting scheme, the water supply pipeline system includes a water supply main e, which is connected to the upper composite pipe 7 of the upper composite pipeline system through a pipeline equipped with an electromagnetic valve F6, connected to the lower composite pipe 8 of the lower composite pipeline system through a pipeline equipped with an electromagnetic valve F7, connected to the temperature distribution water tank 2 through a pipeline equipped with an electromagnetic valve F11 (the water supply main e supplies water to the top of the temperature distribution water tank through the electromagnetic valve F11), and connected to the water ring vacuum pump (S) 6 through a pipeline equipped with an electromagnetic valve FS (the water supply main e is connected to the water ring vacuum pump (S) 6, and the electromagnetic valve FS is installed to ensure that the water ring vacuum pump (S) 6 generates the water required for vacuum). The interface for the vacuum direction of the water ring vacuum pump (S) 6 is also connected to the auxiliary tank 5 through a pipeline equipped with an electromagnetic valve F5, and a gate valve Q4 is provided on the water supply main e.

[0075] Furthermore, as a preferred embodiment, the steam system includes a steam inlet main pipe a, which is connected to the upper composite pipeline system, the lower composite pipeline system and the temperature distribution water tank 2 through multiple pipes. A solenoid valve F16 is also provided on the pipe connecting the steam inlet main pipe a to the temperature distribution water tank 2, and a steam sewage discharge system is also provided at the end of the steam inlet main pipe.

[0076] As a preferred setting scheme, the steam system includes a steam inlet main pipe a, which is connected to the upper composite pipe 7 of the upper composite pipeline system through a pipeline equipped with a solenoid valve F20, connected to the lower composite pipe 8 of the lower composite pipeline system through a pipeline equipped with a solenoid valve F19, and connected to the temperature distribution water tank 2 through a pipeline equipped with a solenoid valve F16. The steam inlet main pipe a is divided into a head end (i.e., the steam inlet C) and an end end, and a steam sewage discharge system is also provided at its end. The steam sewage discharge system is provided with a gate valve Q2 and a steam sewage outlet E.

[0077] Furthermore, as a preferred embodiment, on the frame 12, the main tank 1 is arranged above the water ring vacuum pump (S) 6; the auxiliary tank 5 is arranged adjacent to the water ring vacuum pump (S) 6, and the auxiliary tank 5 is higher than the water ring vacuum pump (S) 6 in terms of spatial position; the temperature distribution water tank 2 is arranged adjacent to the auxiliary tank 5, and the temperature distribution water tank 2 is higher than the auxiliary tank 5 in terms of spatial position; in terms of spatial position, the main tank 1, the temperature distribution water tank 2 and the auxiliary tank 5 are arranged in a herringbone shape.

[0078] As a preferred setting scheme, when the main tank 1, the temperature-matching water tank 2, the auxiliary tank 5 and the water ring vacuum pump (S) 6 are arranged on the rack, the main tank 1, the temperature-matching water tank 2 and the auxiliary tank 5 are arranged in a triangular shape in the spatial position (in the height direction), and in the specific setting, the water ring vacuum pump (S) 6 is set at the bottom layer, and the main tank 1 is set above the water ring vacuum pump (S) 6 through the bracket, and the auxiliary tank 5 is set adjacent to the water ring vacuum pump (S) 6, and in the spatial position (in the height direction), the auxiliary tank 5 is also located on the side and above the water ring vacuum pump (S) 6; the temperature-matching water tank 2 is set adjacent to the auxiliary tank 5, and in the spatial position, the temperature-matching water tank 2 is higher than the auxiliary tank 5, but it is not limited to this.

[0079] Furthermore, as a preferred embodiment, the lower composite pipe 8 is spatially lower than the main tank 1, and the upper composite pipe 7 is spatially located in the lower middle portion of the temperature distribution water tank 2 and the main tank 1, but is not limited thereto.

[0080] Furthermore, as a preferred embodiment, the water supply port A of the water supply system is spatially lower than the steam inlet (steam inlet C) of the air intake system.

[0081] Furthermore, as a preferred embodiment, a drain port B is provided on the auxiliary tank 5 , and the drain port B is spatially located below the auxiliary tank 5 .

[0082] Further, as a preferred embodiment, Figures 3-5 As shown, the cocoon cooking process of the micro-decompression cocoon cooking machine is preferably controlled by PLC. In order to realize PLC control, a PLC control circuit structure is set. The PLC control circuit connection diagram is shown in FIG. Figure 4 As shown in the figure:

[0083] The PLC chip adopts FX2N-40MR(T), and the water ring vacuum pump (S) 6 is connected to the Y00 port of the PLC chip through KM1; the solenoid valve F1 to the solenoid valve F12 are connected to the Y01 port to the Y07 port and the Y10 to the Y14 port of the PLC chip through KA1 to KA12 respectively (the FX2N-40MR(T) PLC model output has no Y08 and Y09 ports); the COM0 port to the COM5 port of the PLC chip are connected to a phase line (L or N, preferably L phase wire) of the AC power, and the Y15 port and Y16 port of the PLC chip are connected to the AC power line. The port allocation sets the automatic light and the alarm light, and one phase line of the AC power (N or L, preferably the N-phase wire) is connected to the end of KM1 connected to the water ring vacuum pump (S) 6, the end of KA1~KA12 connected to the solenoid valve F1~solenoid valve F12, the automatic light non-PLC chip connection end and the alarm light non-PLC chip connection end. The other ends of the solenoid valve F1~solenoid valve F12 are all connected to the S-phase wire, that is, the solenoid valve F1~solenoid valve F12 are all connected to two-phase wires (L and N respectively), and the end connected to the N-phase wire is connected to KA (KA1~KA12).

[0084] A temperature measuring device (temperature sensor) for detecting the temperature of the main tank and the temperature distribution water tank is set between the AD0+ and AD0- ports of the PLC chip. A program reset button, a call continue button, an automatic selection button, a start button, an emergency stop button, a water ring vacuum pump button and various solenoid valve buttons are set at the X0 to X21 ends of the PLC chip, such as Figure 6 The electrical control box panel diagram is shown.

[0085] The micro-vacuum cocoon cooking machine collects and controls temperature using temperature sensors installed in the main tank 1 and the temperature-distributing water tank 2, in conjunction with a PLC chip. The vacuum level and the amount of water required for cooking are controlled by a vacuum gauge installed on the main tank 1 and the time it takes for the liquid level to reach the main tank sight glass 3. The closure of various solenoid valves in the piping system manages the vacuum, steam, and water supply to the cocoons in the main tank 1, ensuring that steam heat is primarily delivered via convection.

[0086] The cocoon cooking process of the micro vacuum cocoon cooking machine is based on PLC technology to set and control temperature and time parameters, and the process runs automatically. Each cocoon cooking process corresponds to a different working state, which is displayed through text.

[0087] Temperature settings include permeate tank temperature (permeate water temperature), adjustment tank temperature (adjustment water temperature), water discharge temperature, and cooking temperature. Permeate and adjustment protection are set by time. Process parameters can be adjusted according to production needs. The setting interface (text display interface) is as follows Figure 5As shown, the temperature of the infiltration water tank and the temperature of the adjustment water tank are achieved by controlling the different temperatures of the water in the temperature-matching water tank (the cocoon cooking process includes infiltration, steaming, adjustment and other processes, among which infiltration and adjustment are the water absorption processes of the cocoon cavity, which require different water temperatures. The present invention uses the same water tank (temperature-matching water tank) and heats it to the process requirements at different time sequences).

[0088] Among them, the names and functions of the water ring vacuum pump (S) 6 and various solenoid valves are shown in Table 2:

[0089] Table 2

[0090]

[0091] The upper composite pipe 7 and the lower composite pipe 8 are provided, through which various combinations of processes can be implemented on the main tank 1, such as steam introduction from the top of the main tank 1 and vacuuming from the bottom, steam introduction from the top of the main tank 1 and connection between the main and auxiliary tanks (main tank and auxiliary tank connection), steam introduction from the bottom of the main tank 1, etc.

[0092] When using the micro-decompression cocoon cooking machine to cook cocoons, there are 7 processes, each of which includes several time periods. The program sets 25 time sequences, namely T1~T25. The cocoon cooking processes, time periods and functions are shown in Table 3.

[0093] Table 3

[0094]

[0095] During the vacuum adjustment and water absorption protection process, the temperature of the temperature-controlled water tank 2 should be set according to the characteristics of the raw materials. During infiltration, the temperature of the temperature-controlled water tank 2 is heated to 30-38°C to form infiltration water; during adjustment, the temperature-controlled water tank 2 is automatically heated to 40-50°C to form adjustment water. On the micro-pressure cocoon cooking machine, the infiltration water and the adjustment water use the same water tank (temperature-controlled water tank 2). Figure 5 (a) According to the process requirements, heating is carried out in different time periods, such as the solenoid valve F16 for water tank heating in Table 2 and Table 4.

[0096] The water spouting and steaming processes have a water spouting temperature of 66-78°C and a steaming temperature of 95-101°C. The water spouting and steaming processes have jump temperatures. This means that within the timeframe of a particular sequence, if the temperature reaches the set threshold, the process will transition to the next sequence.

[0097] All process time settings: The setting unit is 0.1 seconds, and the adjustment range of each timing is 0-999 seconds. It is set according to the running time of each timing process, generally 0-120 seconds.

[0098] Open the cover of main tank 1, put the cocoons into main tank 1 and seal the cover tightly. Then turn on the "start button" of the electric control box and the PLC will automatically control the operation. Figure 6 shown.

[0099] Table 4 shows the cocoon cooking sequence and operation:

[0100] Table 4

[0101]

[0102]

[0103] Example 1:

[0104] Combine Figures 1 to 3 The cocoon cooking process of the micro-decompression cocoon cooking machine is equipped with an infiltration process, a drainage process, a water spitting process, a steaming process, a vacuum cooling process, a vacuum adjustment water absorption protection process and an alarm cocoon discharge process. The infiltration process section adopts a vacuum infiltration method to absorb water into the cocoon cavity to moisten the cocoon layer. There are four infiltration time sequences, among which,

[0105] In the first penetration sequence (T1), the water ring vacuum pump (S) 6, the solenoid valve F1, the solenoid valve F5 and the solenoid valve FS are started, and the water ring vacuum pump (S) 6 is evacuated. When the vacuum degree of the main tank 1 reaches the limit, the vacuum is continued for 20 seconds, and then the second penetration sequence is entered. During this penetration sequence, the solenoid valve F16 is used to heat the temperature distribution water tank 2. The temperature distribution water tank 2 is equipped with a temperature probe (temperature sensor). The temperature distribution water tank 2 is heated to a set temperature (the set temperature range is: 30-38°C, preferably 32°C) and then the heating is stopped.

[0106] The second permeation sequence (T2) is to control the water ring vacuum pump (S6), solenoid valve F1, solenoid valve F5 and solenoid valve F12 to realize the vacuum pumping on the main tank 1 and the permeation water injection from the bottom. The time setting is to end when the liquid level in the main tank 1 reaches the upper edge position of the main tank sight glass 3;

[0107] The third penetration sequence (T3) is to control the water ring vacuum pump (S) 6, the solenoid valve F1 and the solenoid valve F5 to complete the water ring vacuum pump (S) to continue to vacuum the main tank 1 and extract the residual air in the main tank 1. The time of this penetration sequence is 30 to 50 seconds.

[0108] In the fourth permeation sequence (T4), the main tank 1 is re-pressurized within 20 to 30 seconds by controlling the solenoid valve F4.

[0109] Example 2:

[0110] This embodiment is further optimized based on the above embodiment, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: during the fourth permeation sequence, the speed of the main tank 1 re-pressurization is adjusted by the gate valve Q1 in front of the electromagnetic valve F4.

[0111] Example 3:

[0112] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: the drainage process section drains the water after the cocoons in the main tank 1 are infiltrated through the auxiliary tank 5, and two drainage sequences are set, wherein,

[0113] In the first drainage sequence (T5), the solenoid valves F4 and F9 are controlled to simultaneously open and release the main tank 1 and the auxiliary tank 5 until the water in the auxiliary tank 5 is completely drained. The water in the auxiliary tank 5 is completely drained within 40 to 50 seconds. In this drainage sequence, the solenoid valve F16 is also used to heat the temperature-controlled water tank 2 to a temperature that meets the requirements for adjusting the water absorption.

[0114] The second drainage sequence (T6) realizes vacuuming and degassing of the main tank 1 by controlling the water ring vacuum pump (S) 6, solenoid valve F4, solenoid valve F5, and solenoid valve F9; in this drainage sequence, the solenoid valve F16 is also used to heat the temperature-controlled water tank 2 to meet the water temperature required for adjusting the water absorption. The time of this drainage sequence is 5 to 10 seconds.

[0115] Example 4:

[0116] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: the water-discharging process section forms heat convection under the "decompression + steam" state, acts on the silk cocoons up and down, and discharges the water from the cocoon cavity. Five drainage sequences are set, among which,

[0117] The first water discharge sequence (T7) is to control the water ring vacuum pump (S6), solenoid valve F1, solenoid valve F5 and solenoid valve F19 to realize steam inlet and vacuum in the main tank 1. The time setting is to adopt the liquid level control mode. When the liquid level is seen at the bottom edge of the main tank sight glass 3, the water discharge sequence ends.

[0118] The second water discharge sequence (T8) controls the water ring vacuum pump (S6), solenoid valve F5, and solenoid valve F9 to discharge the water discharged from the cocoons in the main tank 1 into the auxiliary tank 5, and controls the solenoid valve F16 to heat the temperature-controlled water tank 2. The duration of this water discharge sequence is 5 to 15 seconds.

[0119] The third water discharge sequence (T9) controls the solenoid valve F20, water ring vacuum pump (S6), solenoid valve F5, and solenoid valve F9 to allow steam to enter the main tank 1 and evacuate the main tank 1, discharging the discharged water into the auxiliary tank 5. When the temperature in the main tank 1 reaches 66-70°C, the system jumps to the fourth water discharge sequence.

[0120] The fourth water discharge sequence (T10) controls the solenoid valves F20 and F9 to allow steam to flow into the main tank 1 and connect the main tank 1 with the auxiliary tank 5. When the temperature in the main tank 1 reaches 75-78°C, the system jumps to the next water discharge sequence.

[0121] In the fifth water discharge sequence (T11), the main tank 1 is vacuumed for 5 to 10 seconds by controlling the water ring vacuum pump (S) 6, the solenoid valve F5, and the solenoid valve F9.

[0122] Example 5:

[0123] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: the steaming process section performs bidirectional steaming on the cocoons under the "decompression + steam" state, so that the cocoon layers are heated evenly, and the cocoon silk sericin swells and softens. Three steaming time sequences are set, wherein,

[0124] In the first steaming sequence (T12), the water ring vacuum pump (S) 6, solenoid valve F5, solenoid valve F1, and solenoid valve F19 are controlled to allow steam to flow into the main tank 1 from below and to draw a vacuum from above, thereby expelling the remaining air in the main tank 1. When the temperature in the main tank 1 is 2°C higher than that in the fourth water discharge sequence (T10), the process jumps to the next steaming sequence.

[0125] The second steaming sequence (T13) is to wait for 0 to 5 seconds before entering the third steaming sequence;

[0126] In the third steaming sequence (T14), the solenoid valve F19 is controlled to allow steam to flow into the main tank 1. When the temperature inside the main tank 1 reaches 95-101°C, the process jumps to the vacuum cooling process section.

[0127] Example 6:

[0128] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: the vacuum cooling process section performs vacuum cooling on the cocoons in the main tank 1, which can avoid and reduce the generation of deflated cocoons. Two vacuum cooling time sequences are set, wherein,

[0129] The first vacuum cooling sequence (T15) is to control the water ring vacuum pump (S) 6, solenoid valve F5, solenoid valve F1 and solenoid valve F9 to evacuate the main tank 1 from top to bottom for 5 to 10 seconds after the cooking process, and to heat the temperature distribution water tank 2 by controlling the solenoid valve F16. The duration of this vacuum cooling sequence is 5 to 10 seconds.

[0130] The second vacuum cooling sequence (T16) is to evacuate the main tank 1 by controlling the water ring vacuum pump (S) 6, solenoid valve F5, and solenoid valve F1, and to heat the temperature distribution water tank 2 by controlling the solenoid valve F16. The time of this vacuum cooling sequence is 5 to 10 seconds.

[0131] Example 7:

[0132] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: in the vacuum adjustment water absorption protection process section, the cocoon layer cocoon cavity sequentially absorbs water from the temperature distribution water tank 2 and normal temperature water, and the water temperature changes gradually, which is beneficial to the protection of the outer layer of the cocoon. Five vacuum adjustment water absorption protection time sequences are set, among which,

[0133] The first vacuum adjustment protection sequence (T17) is to control the water ring vacuum pump (S) 6, solenoid valve F5, solenoid valve F1 and solenoid valve F12 to realize vacuuming of the main tank 1 and feeding water into the temperature distribution water tank 2 (the water temperature in the temperature distribution water tank 2 is the adjustment water temperature at this time). The time is set to 10-15s.

[0134] The second vacuum adjustment protection sequence (T18) is to control the water ring vacuum pump (S) 6, solenoid valve F5, solenoid valve F1 and solenoid valve F7 to realize vacuuming of the main tank 1 and to supply normal temperature water (direct water supply from the water supply main) into the main tank 1. When the liquid level in the main tank 1 reaches the upper edge of the main tank sight glass 3 or the main tank is full of water, the vacuum adjustment protection sequence ends.

[0135] The third vacuum adjustment protection sequence (T19) completes the re-pressurization of the main tank 1 in 5 to 10 seconds by controlling the solenoid valve F4;

[0136] The fourth vacuum adjustment protection sequence (T20) controls the solenoid valves F4, F6, and F9 to spray normal temperature water (directly supplied from the water main) onto the main tank 1 within 8 to 16 seconds, and then drains the water to the auxiliary tank 5.

[0137] The fifth vacuum adjustment protection sequence (T21) is to release the main tank 1 for 5 to 8 seconds by controlling the solenoid valve F4.

[0138] Example 8:

[0139] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3 As shown, in order to better realize the present invention, the following setting mode is particularly adopted: the alarm cocoon-out process is provided with four alarm cocoon-out timing sequences, wherein:

[0140] The first alarm is the cocoon-emergence timing (T22), which is activated by voice prompts to indicate that the cocoon can be emerged;

[0141] The second alarm cocoon out timing (T23) is to control the solenoid valve F4 to complete the opening of the cover and the removal of the cocoon in 60 to 70 seconds;

[0142] The third alarm cocoon-ejecting sequence (T24) controls the solenoid valves F11 and F9 to replenish the temperature-distributing water tank 2, connect the main tank 1 with the auxiliary tank 5, and drain the auxiliary tank 5. When the temperature-distributing water tank 2 is fully replenished, the third alarm cocoon-ejecting sequence ends.

[0143] The fourth alarm cocoon-discharging sequence (T25) controls the solenoid valve F9, the connection between the main tank 1 and the auxiliary tank 5, and the drainage of the auxiliary tank 5 for 0 to 30 seconds.

[0144] Example 9:

[0145] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3As shown, in order to better realize the present invention, the following arrangement is particularly adopted: the micro-decompression cocoon cooking machine is provided with a frame 12 and a main tank 1 arranged on the frame 12, a temperature-matching water tank (according to process requirements, the temperature-matching water tank provides two kinds of water: permeation water and adjustment water. During permeation, the temperature-matching water tank is usually called the permeation water tank, and during adjustment, it is usually called the adjustment water tank. The present invention uses the same water tank (temperature-matching water tank) to heat to the temperature required by the process at different time periods. For example, during permeation, the temperature-matching water tank is heated to 30 ~38℃ (preferably 32℃), when adjusting, heat the temperature distribution water tank to 40~50℃ (preferably 45℃)) 2. Composite piping system 4, auxiliary tank 5, water ring vacuum pump (S) 6, upper composite pipe 7, two sections of lower composite pipe 8 connected by electromagnetic valve F9, bleed pipe 11, steam inlet pipe a, temperature distribution water pipe b, water supply pipe e and multiple pipes, the upper composite pipe 7 is connected to one end of the bleed pipe 11, the other end of the bleed pipe 11 is placed in the temperature distribution water tank 2, and an electromagnetic valve is provided on the bleed pipe 11 Valve F4, gate valve Q1 and one-way valve G1, water supply main e is connected to temperature distribution water tank 2 through a pipeline provided with electromagnetic valve F11, connected to upper composite pipe 7 through a pipeline provided with electromagnetic valve F6, connected to first section lower composite pipe 8 through a pipeline provided with electromagnetic valve F7, connected to water ring vacuum pump (S) 6 through a pipeline provided with electromagnetic valve FS, water ring vacuum pump (S) 6 is connected to auxiliary tank 5 through a pipeline provided with electromagnetic valve F5, auxiliary tank 5 is connected to second section lower composite pipe 8 through a pipeline; second section lower composite pipe 8 is connected to the upper composite pipe 7 through a pipe equipped with a solenoid valve F1. The steam inlet main pipe a is connected to the temperature distribution water tank 2 through a pipe equipped with a solenoid valve F16, connected to the upper composite pipe 7 through a pipe equipped with a solenoid valve F20, and connected to the first section of the lower composite pipe 8 through a pipe equipped with a solenoid valve F19. The temperature distribution water main pipe b is connected to the first section of the lower composite pipe 8 through a pipe equipped with a solenoid valve F12. The main tank 1 is also connected to the upper composite pipe 7 and the first section of the lower composite pipe 8 through an upper connecting pipe and a lower connecting pipe, respectively.

[0146] Example 10:

[0147] This embodiment is further optimized based on any of the above embodiments, and the parts that are the same as the above technical solutions will not be repeated here. Figures 1 to 3As shown, in order to better realize the present invention, the following arrangement is particularly adopted: on the frame 12, the main tank 1 is arranged above the water ring vacuum pump (S) 6; the auxiliary tank 5 is arranged adjacent to the water ring vacuum pump (S) 6, and the auxiliary tank 5 is higher than the water ring vacuum pump (S) 6 in terms of spatial position; the temperature distribution water tank 2 is arranged adjacent to the auxiliary tank 5, and the temperature distribution water tank 2 is higher than the auxiliary tank 5 in terms of spatial position; the main tank 1, the temperature distribution water tank 2 and the auxiliary tank 5 are arranged in a herringbone shape in terms of spatial position; the lower composite pipe 8 is lower than the main tank 1 in terms of spatial position, and the upper composite pipe 7 is located in the middle and lower part of the temperature distribution water tank 2 and the main tank 1 in terms of spatial position; the water supply port A of the water supply main pipe e is lower than the steam inlet (steam inlet C) of the steam inlet main pipe a in terms of spatial position, and a drain port B is also provided on the auxiliary tank 5, and the drain port B is located below the auxiliary tank 5 in terms of spatial position.

[0148] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. The cocoon cooking process of the micro-decompression cocoon cooking machine is equipped with an infiltration process, a drainage process, a water discharge process, a steaming process, a vacuum cooling process, a vacuum adjustment water absorption protection process and an alarm cocoon discharge process, which is characterized by: The infiltration process section adopts a vacuum infiltration method to suck water into the cocoon cavity to moisten the cocoon layer. Four infiltration time sequences are set, among which: In the first penetration sequence, the water ring vacuum pump (6), the solenoid valve F1, the solenoid valve F5 and the solenoid valve FS are started, and the water ring vacuum pump (6) is evacuated. When the vacuum degree of the main tank (1) reaches the limit, the vacuum is continued for 20 seconds, and then the second penetration sequence is entered. During this penetration sequence, the temperature distribution water tank (2) is heated by the solenoid valve F16, and the heating is stopped when the temperature reaches the set temperature. The second permeation sequence is to control the water ring vacuum pump (6), the solenoid valve F1, the solenoid valve F5 and the solenoid valve F12 to realize the vacuum pumping of the main tank (1) and the infiltration of the water. The time setting is to end when the liquid level in the main tank (1) reaches the upper edge of the main tank sight glass (3); The third penetration sequence is to control the water ring vacuum pump (6), the solenoid valve F1 and the solenoid valve F5 to complete the water ring vacuum pump (6) to continue to evacuate the main tank (1) and extract the residual air in the main tank (1). The time of this penetration sequence is: 30~50s; In the fourth permeation sequence, the main tank (1) is re-pressurized within 20-30 seconds by controlling the solenoid valve F4; The micro-pressure cocoon cooking machine is provided with a frame (12) and a main tank (1) arranged on the frame (12), a temperature distribution water tank (2), a composite pipe system (4), an auxiliary tank (5), a water ring vacuum pump (6), an upper composite pipe (7), two sections of lower composite pipes (8) connected by a solenoid valve F9, a vent pipe (11), a steam inlet pipe, a temperature distribution water pipe, a water supply pipe and a plurality of pipes, the upper composite pipe (7) is connected to one end of the vent pipe (11), the other end of the vent pipe (11) is placed in the temperature distribution water tank (2), a solenoid valve F4, a gate valve Q1 and a one-way valve G1 are provided on the vent pipe (11), the water supply pipe is connected to the temperature distribution water tank (2) through a pipe provided with a solenoid valve F11, connected to the upper composite pipe (7) through a pipe provided with a solenoid valve F6, and connected to the first section of the lower composite pipe through a pipe provided with a solenoid valve F7. The composite pipe (8) is connected to the water ring vacuum pump (6) through a pipe provided with a solenoid valve FS, the water ring vacuum pump (6) is connected to the auxiliary tank (5) through a pipe provided with a solenoid valve F5, and the auxiliary tank (5) is connected to the second section lower composite pipe (8) through a pipe provided with a solenoid valve F1; the second section lower composite pipe (8) is connected to the upper composite pipe (7) through a pipe provided with a solenoid valve F1; the steam inlet main pipe is connected to the temperature distribution water tank (2) through a pipe provided with a solenoid valve F16, connected to the upper composite pipe (7) through a pipe provided with a solenoid valve F20, and connected to the first section lower composite pipe (8) through a pipe provided with a solenoid valve F19; the temperature distribution water main pipe is connected to the first section lower composite pipe (8) through a pipe provided with a solenoid valve F12; the main tank (1) is also connected to the upper composite pipe (7) and the first section lower composite pipe (8) through an upper connecting pipe and a lower connecting pipe, respectively.

2. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: During the fourth permeation sequence, the speed of re-pressurization of the main tank (1) is adjusted by the gate valve Q1 in front of the solenoid valve F4.

3. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: The drainage process section drains the water after the cocoons in the main tank (1) penetrate through the auxiliary tank (5), and is provided with two drainage sequences, wherein: In the first drainage sequence, the main tank (1) and the auxiliary tank (5) are opened and vented simultaneously by controlling the solenoid valves F4 and F9 until the water in the auxiliary tank (5) is completely drained. In this drainage sequence, the temperature distribution water tank (2) is heated by the solenoid valve F16. In the second drainage sequence, the main tank (1) is vacuumed and degassed by controlling the water ring vacuum pump (6), the solenoid valve F4, the solenoid valve F5, and the solenoid valve F9. In this drainage sequence, the temperature distribution water tank (2) is heated by the solenoid valve F16. The duration of this drainage sequence is 5 to 10 seconds.

4. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: The water discharge process section forms heat convection under the "decompression + steam" state, acts on the cocoons up and down, and discharges the water from the cocoon cavity. There are five drainage sequences, among which: The first water discharge sequence is to control the water ring vacuum pump (6), the solenoid valve F1, the solenoid valve F5 and the solenoid valve F19 to realize the steam inlet and vacuum in the main tank (1); when the liquid level is seen at the bottom edge of the main tank sight glass (3), the water discharge sequence is terminated; The second water spouting sequence is to discharge the water spouted by the cocoons in the main tank (1) into the auxiliary tank (5) by controlling the water ring vacuum pump (6), the solenoid valve F5, and the solenoid valve F9, and to heat the temperature distribution water tank (2) by controlling the solenoid valve F16. The time of this water spouting sequence is 5 to 15 seconds. The third water discharge sequence is to control the solenoid valve F20, the water ring vacuum pump (6), the solenoid valve F5, and the solenoid valve F9 to allow steam to enter the main tank (1) and to evacuate the main tank (1). When the temperature in the main tank (1) reaches 66-70°C, the system jumps to the fourth water discharge sequence. The fourth water discharge sequence is to control the solenoid valve F20 and the solenoid valve F9 to realize the steam inlet of the main tank (1) and connect the main tank (1) and the auxiliary tank (5). When the temperature in the main tank (1) reaches 75-78°C, the system jumps to the next water discharge sequence. In the fifth water discharge sequence, the main tank (1) is vacuumed for 5 to 10 seconds by controlling the water ring vacuum pump (6), the solenoid valve F5, and the solenoid valve F9.

5. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: The steaming process section performs bidirectional steaming on the cocoons under the "decompression + steam" state, and is provided with three steaming time sequences, wherein: In the first steaming sequence, the water ring vacuum pump (6), the solenoid valve F5, the solenoid valve F1 and the solenoid valve F19 are controlled to allow steam to flow into the main tank (1) from below and to draw vacuum from above, thereby exhausting the residual air in the main tank (1). When the temperature in the main tank (1) is 2°C higher than that in the fourth water discharge sequence, the process jumps to the next steaming sequence. The second steaming sequence, let it stand for 0~5s and then enter the third steaming sequence; In the third steaming sequence, the solenoid valve F19 is controlled to allow steam to flow into the main tank (1). When the temperature in the main tank (1) reaches 95-101°C, the process switches to the vacuum cooling process.

6. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: The vacuum cooling process section performs vacuum cooling on the cocoons in the main tank (1), and is provided with two vacuum cooling time sequences, wherein: The first vacuum cooling sequence, after the cooking process, is to evacuate the main tank (1) by controlling the water ring vacuum pump (6), solenoid valve F5, solenoid valve F1 and solenoid valve F9, and to heat the temperature distribution water tank by controlling the solenoid valve F16. The time of this vacuum cooling sequence is 5 to 10 seconds. The second vacuum cooling sequence is to evacuate the main tank (1) by controlling the water ring vacuum pump (6), the solenoid valve F5, and the solenoid valve F1, and to heat the temperature distribution water tank by controlling the solenoid valve F16. The time of this vacuum cooling sequence is 5 to 10 seconds.

7. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: In the vacuum adjustment water absorption protection process section, the cocoon cavity of the cocoon layer sequentially absorbs water from the temperature distribution water tank and water at room temperature to protect the outer layer of the cocoon. There are five vacuum adjustment water absorption protection time sequences, among which: The first vacuum adjustment protection sequence is to control the water ring vacuum pump (6), solenoid valve F5, solenoid valve F1 and solenoid valve F12 to realize the vacuum pumping of the main tank (1) and the adjustment water supply to the temperature distribution water tank (2). The time is set to 10~15s; The second vacuum adjustment protection sequence is to control the water ring vacuum pump (6), the solenoid valve F5, the solenoid valve F1 and the solenoid valve F7 to realize the vacuum pumping of the main tank (1) and the introduction of normal temperature water into the main tank (1). When the liquid level in the main tank reaches the upper edge of the main tank sight glass (3) or the main tank (1) is full of water, the vacuum adjustment protection sequence ends. The third vacuum adjustment protection sequence completes the re-pressurization of the main tank (1) in 5-10 seconds by controlling the solenoid valve F4; The fourth vacuum adjustment protection sequence controls the solenoid valves F4, F6 and F9 to complete the pouring of normal temperature water from the main tank (1) and the drainage to the auxiliary tank (5) within 8 to 16 seconds. The fifth vacuum adjustment protection sequence is to release the main tank (1) for 5 to 8 seconds by controlling the solenoid valve F4.

8. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: The alarm cocoon-discharging process is provided with four alarm cocoon-discharging timing sequences, wherein: The first alarm is the cocoon-emergence sequence, which is activated by voice prompts to indicate that the cocoon can be emerged; The second alarm cocoon out timing is to open the cover and take out the cocoons in 60~70s by controlling the solenoid valve F4; The third alarm cocoon-ejecting sequence is to control the electromagnetic valve F11 and the electromagnetic valve F9 to replenish the temperature-distributing water tank (2), connect the main tank (1) and the auxiliary tank (5), and drain the water from the auxiliary tank (5). When the temperature-distributing water tank (2) is fully replenished, the third alarm cocoon-ejecting sequence is terminated. The fourth alarm cocoon discharge sequence is to control the solenoid valve F9 to connect the main tank (1) and the auxiliary tank (5), and drain the auxiliary tank (5) for 0 to 30 seconds.

9. The cocoon cooking process of the micro-decompression cocoon cooking machine according to claim 1, characterized in that: On the frame (12), the main tank (1) is arranged above the water ring vacuum pump (6); the auxiliary tank (5) is arranged adjacent to the water ring vacuum pump (6), and in terms of spatial position, the auxiliary tank (5) is higher than the water ring vacuum pump (6); the temperature distribution water tank (2) is arranged adjacent to the auxiliary tank (5), and in terms of spatial position, the temperature distribution water tank (2) is higher than the auxiliary tank (5); in terms of spatial position, the main tank (1), the temperature distribution water tank (2) and the auxiliary tank (5) are arranged in a herringbone shape.

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