Production process of charcoal handmade black bean curd compactification

Abstract

The application discloses a production process of firewood handmade black bean curd compactification, and aims to provide a production process of firewood handmade black bean curd compactification which can form step-by-step exhaust of cooked bean milk and step-by-step compactification through an adjuster to form double bean curd compactification forming, and the technical scheme is as follows: in order to exhaust the material liquid, the application adopts the rotating operation of a rotating device, removes the bubbles in the cooked bean milk by gradually reducing the thickness of the material liquid and changing the centrifugal force, adjusts the pouring area of the pouring blank in real time through the adjuster, forms lateral buffering after the cooked bean milk is poured, and forms multiple pouring compactification operations, so that the generation of bubbles in the cooked bean milk during the pouring process is reduced, and the real-time adjustment of the pouring area by the rotating device and the adjuster greatly improves the compactification effect of the pouring blank, and the application is suitable for the production process technical field of bean curd.

Description

Technical Field

[0001] The present invention relates to the technical field of tofu production technology, and more specifically, to a production process for firming handmade black tofu cooked with firewood. Background Art

[0002] The nutritional value of soy products lies primarily in their rich protein content. They contain similar essential amino acids as animal protein, along with essential minerals like calcium, phosphorus, and iron, vitamins B1 and B2, and fiber. However, soy products contain no cholesterol. Therefore, some recommend that patients with obesity, arteriosclerosis, hyperlipidemia, hypertension, and coronary heart disease consume more beans and soy products. For healthy individuals, relying on a single source of nutrition is undesirable; soy products can serve as a complementary source of protein. They are an important component of a balanced diet.

[0003] At present, there is a firewood-fired handmade black tofu production and processing method on the market, such as patent number CN118575920A. During the production and processing process, the cooked soy milk is degassed by repeatedly draining and exhausting. This method not only has a slow exhaust speed, but also a relatively complicated processing procedure, and cannot well improve the continuity of production. Therefore, improving the continuity of production and increasing the exhaust speed are currently existing problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a production process for compacting firewood handmade black tofu, which can gradually exhaust the cooked soy milk and gradually compact it through a regulator to form a double compacted tofu shape.

[0005] To achieve the above object, the present invention provides the following technical solution: a production process for firming handmade black tofu cooked with firewood, specifically comprising the following steps: S1, selecting high-quality soybeans and black sesame seeds, and removing blackened or moldy soybeans and low-quality black sesame seeds; and preparing a defoaming agent, magnesium chloride, a tofu box, and a covering film;

[0006] S2. Soak the soybeans selected in step S1 in mountain stream water, stirring the soybeans during the soaking process and washing away impurities therein;

[0007] S3, while step S2 is being carried out, stir-frying the selected high-quality black sesame seeds, and crushing the stir-fried black sesame seeds into a paste for preparation;

[0008] S4, grinding the soybeans processed in step S2, and filtering the ground pulp to separate the soy milk portion. An appropriate amount of defoaming agent needs to be added during the grinding process;

[0009] S5, boiling the soy milk filtered in step S4, the boiling temperature needs to reach above 95°C, and adding a defoaming agent twice during the boiling process;

[0010] S6, performing secondary filtration on the soy milk after cooking in step S5 to remove residues to obtain cooked soy milk, and adding a small amount of magnesium chloride and a small amount of black sesame paste to the cooked soy milk to solidify the soy milk;

[0011] S7, rotating the cooked soymilk obtained in step S6 for preliminary degassing. The specific rotary degassing method is as follows: introducing the obtained cooked soymilk into a rotating device, and configuring the rotating device to gradually reduce the thickness of the cooked soymilk on the rotating cylinder wall after the cooked soymilk is introduced, thereby discharging gas in the soymilk liquid and finally discharging it along the cylinder wall of the rotating device;

[0012] S8. Directing the cooked soymilk preliminarily exhausted in step S7 into a secondary exhaust device, the secondary exhaust device comprising a billet casting area, the billet casting area comprising two side baffles and a movable plate disposed between the two side baffles, the two movable plates being connected to a regulator, and the regulator being activated to drive the movable plates, the two movable plates and the two side baffles coming into contact with each other to form the billet casting area, the regulator being configured to move the movable plates in real time as the billet casting pressure increases;

[0013] First, the cooked soy milk is discharged from the rotating device, and then poured into the casting area. The casting value is set to ensure that the volume of the cooked soy milk is between 3 / 5 and 4 / 5 of the volume of the casting area.

[0014] Recording the position of the movable plate after being subjected to the pressure of the billet pouring, using a displacement sensor provided on the regulator to record the initial position of the movable plate, and then recording the position of the movable plate after the cooked soy milk is poured into the billet. Due to the control of the regulator, the movable plate will maintain the position after the displacement, and until the movable plate is no longer subjected to the force, the pressure detector in the regulator detects whether the pressure is at a constant value;

[0015] After the pressure is constant, the regulator controls the movable plate to reset by pushing the movable plate until it returns to its initial position;

[0016] Casting the blank again, by pouring the blank area until the remaining blank area is filled;

[0017] S9, after the casting is formed, it is drained for 4-8 hours;

[0018] S10, cool the semi-finished product in a cold storage with a temperature between 0°C and 4°C;

[0019] S11, disinfecting the tofu box and the cover film, and demoulding and packaging the semi-finished product obtained in step S10;

[0020] S12, packing the packaged tofu boxes, and after leak testing, storing the packed tofu in a cold storage at a temperature between 0°C and 4°C;

[0021] S13. Loop steps S1-S12.

[0022] The present invention is further configured as follows: the rotating device includes a main cylinder, a feed port and a discharge port arranged on the main cylinder, mechanical seals arranged at both ends of the main cylinder, and a rotating motor for driving the main cylinder to rotate; a thickness detector for monitoring the real-time thickness of the soy milk liquid is provided in the main cylinder, and the feed port of the main cylinder is also provided with a flow detector for monitoring the real-time flow rate of the soy milk liquid.

[0023] The present invention is further configured as follows: the specific exhaust method of the rotating equipment is as follows: receiving monitoring parameters of a thickness detector and a flow detector in real time, the monitoring parameters being composed of the thickness of the liquid on the inner surface of the cylinder sent by the thickness detector and the liquid flow rate at the feed inlet sent by the flow detector; and presetting parameters for the achieved thickness;

[0024] Then, a relative parameter ratio H is calculated based on the monitoring parameters monitored by the thickness detector and the preset parameters. The relative parameter ratio H is used to represent the difference between the monitoring parameters and the preset parameters. The relative parameter ratio H = (current slurry thickness - target slurry thickness) / target slurry thickness;

[0025] Finally, the rotational speed of the driving motor is adjusted based on the relative parameter ratio to reduce the difference between the monitoring parameter and the preset parameter.

[0026] The present invention is further configured as follows: the regulator includes a driving part and a pushing air chamber, which is transmission-connected to the movable plate; the driving part includes a driving air chamber connected to the pushing air chamber and a buffer part arranged between the pushing air chamber and the driving air chamber; the buffer part includes a first inner push plate for driving the pushing air chamber to form an air pressure change, a second inner push plate arranged in the driving air chamber and connected to the first inner push plate through a connecting rod, and a buffer spring arranged between the first inner push plate and the driving air chamber and sleeved outside the connecting rod.

[0027] The present invention is further configured as follows: the driving air chamber includes a regulating air port and a driving air port, the driving air port is connected to a driving air pump and an electromagnetic on-off valve for regulating the on-off of the driving air port, and an electromagnetic one-way valve is provided on the regulating air hole. The electromagnetic one-way valve is configured so that when the electromagnetic on-off valve is opened, the electromagnetic one-way valve is in a closed state; when the electromagnetic on-off valve is closed, the electromagnetic one-way valve is in a one-way air outlet state.

[0028] The present invention is further configured as follows: the specific adjustment method of the regulator is as follows: the initial position of the movable plate is recorded by the displacement sensor;

[0029] When the cooked soy milk is discharged from the rotating device to the casting area, the movable plate is pressed to move toward the driving air chamber. The regulating air port of the driving air chamber is exhausted, and after the air pressure is stabilized, the movable plate stops moving.

[0030] After the pressure is constant, the driving air chamber of the regulator increases the air pressure in the driving air chamber through the driving air pump, pushing the second inner push plate to push the movable plate to reset, and pushing the movable plate until it returns to its initial position;

[0031] Repeat the pouring action of the cooked soy milk and the air pressure adjustment action of the driving air chamber until the pouring is completed.

[0032] By adopting the above technical solution, the beneficial effects are as follows: 1. The basic production process adopted by the present invention is basically the same as the basic production process of the patent document in the background technology. The main difference is that in order to deal with the exhaust of the slurry, the present invention adopts the rotating operation of the rotating equipment. By gradually reducing the thickness of the slurry and changing the centrifugal force, the bubbles in the cooked soy milk are removed, and the casting area is adjusted in real time by the regulator during the casting, forming a lateral buffer after the cooked soy milk is cast, and forming multiple casting compacting operations, thereby reducing the generation of bubbles in the cooked soy milk during the casting process, and the real-time adjustment of the casting area by the rotating equipment and the regulator greatly improves the casting compaction effect, makes the tofu more compact, and greatly improves the practicality;

[0033] 2. In order to improve the degassing of cooked tofu, the rotating device is configured to include a main cylinder, a feed port and a discharge port provided on the main cylinder, mechanical seals provided at both ends of the main cylinder, and a rotary motor for driving the main cylinder to rotate. The main cylinder is provided with a thickness detector for monitoring the real-time thickness of the soy milk liquid, and the feed port of the main cylinder is also provided with a flow detector for monitoring the real-time flow rate of the soy milk liquid. The thickness detector and flow detector are used to monitor the thickness of the soy milk liquid in the main cylinder and the flow rate, thereby achieving degassing of the cooked soy milk, thereby improving the firmness of the tofu after casting and having a better taste.

[0034] 3. In order to ensure that the cooked soy milk in the casting area can be more compacted during the casting process and reduce the generation of bubbles during the pouring process, the regulator is set to include a driving part and a pushing air chamber, which is transmission-connected to the movable plate. The driving part includes a driving air chamber connected to the pushing air chamber and a buffer part arranged between the pushing air chamber and the driving air chamber. The present invention uses the driving part and the pushing air chamber as the main regulating parts. Because the pushing air chamber and the movable plate are connected, the movable plate will form pressure on the pushing air chamber when it is subjected to force, and the buffer part includes a first inner pushing plate for driving the pushing air chamber to form an air pressure change, a second inner pushing plate arranged in the driving air chamber and connected to the first inner pushing plate through a connecting rod, and a And a buffer spring is arranged between the first inner push plate and the driving air chamber and is sleeved on the outside of the connecting rod, so that a first buffer is formed by the buffer spring, and in the present invention, the driving air chamber includes an adjusting air port and a driving air port, the driving air port is connected to a driving air pump and an electromagnetic on-off valve for adjusting the on-off of the driving air port, and an electromagnetic one-way valve is provided on the adjusting air hole, and the electromagnetic one-way valve is configured so that when the electromagnetic on-off valve is opened, the electromagnetic one-way valve is in a closed state; when the electromagnetic on-off valve is closed, the electromagnetic one-way valve is in a one-way air outlet state, so that after closing the electromagnetic on-off valve, the electromagnetic one-way valve can maintain a continuous air outlet state, thereby forming a position maintenance for the movable plate, realizing the effect of forming a lateral buffer when pouring the blank, reducing the generation of bubbles in the cooked soy milk, and greatly improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention is a process flow chart of an embodiment of a process for producing firmed handmade black tofu using firewood.

[0036] Figure 2 The present invention is a structural schematic diagram of a rotating device for a compacting production process of handmade black tofu made with firewood.

[0037] Figure 3 The present invention is a structural schematic diagram of a rotating device for a compacting production process of handmade black tofu made with firewood.

[0038] Figure 4 The present invention is a structural schematic diagram of a rotating device for a compacting production process of handmade black tofu made with firewood.

[0039] The reference numerals in the figure are: 1. Rotating equipment; 10. Main cylinder; 101. Feed port; 102. Discharge port; 11. Rotating motor; 2. Secondary exhaust device; 20. Driving part; 21. Pushing air chamber; 22. Buffering part; 220. First inner push plate; 221. Connecting rod; 222. Second inner push plate; 23. Driving air chamber; 24. Buffering spring; 230. Adjusting air port; 231. Driving air port; 232. Driving air pump; 233. Solenoid on-off valve; 234. Solenoid one-way valve; 3. Casting area; 30. Baffle; 31. Moving plate; 4. Regulator. DETAILED DESCRIPTION

[0040] Reference Figures 1 to 4 The present invention further describes an embodiment of a compacting production process for handmade black tofu cooked with firewood.

[0041] For ease of explanation, spatial relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to illustrate the relationship between one element or feature shown in the figures and another element or feature. It should be understood that, in addition to the orientation shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0042] Moreover, relational terms such as “first” and “second” are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any actual relationship or order between these components.

[0043] A production process for firming handmade black tofu cooked over a firewood fire specifically comprises the following steps: S1, selecting high-quality soybeans and black sesame seeds, and removing blackened or moldy soybeans and low-quality black sesame seeds; and further preparing a defoaming agent, magnesium chloride, a tofu box, and a covering film;

[0044] S2. Soak the soybeans selected in step S1 in mountain stream water, stirring the soybeans during the soaking process and washing away impurities therein;

[0045] S3, while step S2 is being carried out, stir-frying the selected high-quality black sesame seeds, and crushing the stir-fried black sesame seeds into a paste for preparation;

[0046] S4, grinding the soybeans processed in step S2, and filtering the ground pulp to separate the soy milk portion. An appropriate amount of defoaming agent needs to be added during the grinding process;

[0047] S5, boiling the soy milk filtered in step S4, the boiling temperature needs to reach above 95°C, and adding a defoaming agent twice during the boiling process;

[0048] S6, performing secondary filtration on the soy milk after cooking in step S5 to remove residues to obtain cooked soy milk, and adding a small amount of magnesium chloride and a small amount of black sesame paste to the cooked soy milk to solidify the soy milk;

[0049] S7, rotating the cooked soymilk obtained in step S6 for preliminary degassing. The specific rotary degassing method is as follows: the cooked soymilk is introduced into the rotary device 1. The rotary device 1 is configured to gradually reduce the thickness of the cooked soymilk on the rotating cylinder wall after the cooked soymilk is introduced, thereby discharging the gas in the soymilk and finally discharging it along the cylinder wall of the rotary device 1;

[0050] S8. The cooked soymilk that has undergone preliminary exhaust in step S7 is introduced into a secondary exhaust device 2. The secondary exhaust device 2 includes a casting area 3. The casting area 3 is composed of two side baffles 30 and a movable plate 31 disposed between the two side baffles 30. The two movable plates 31 are connected to a regulator 4. When the regulator 4 is activated, the movable plates 31 are driven. The two movable plates 31 collide with the two side baffles 30 to form the casting area 3. The regulator 4 is configured to move the movable plates 31 in real time as the casting pressure increases.

[0051] After the cooked soy milk is discharged from the rotating device 1, it is poured into the mold pouring area 3. The pouring value is set to ensure that the volume of the poured cooked soy milk is between 3 / 5 and 4 / 5 of the volume of the mold pouring area 3.

[0052] The moving position of the movable plate 31 after being subjected to the pressure of the soymilk casting is recorded. The initial position of the movable plate 31 is recorded by the displacement sensor provided on the regulator 4. The position of the movable plate 31 after the cooked soymilk is cast is then recorded. Due to the control of the regulator 4, the movable plate 31 will maintain the position after the displacement. Until the movable plate 31 is no longer subjected to the force, the pressure detector in the regulator 4 detects whether the pressure is at a constant value.

[0053] After the pressure is constant, the regulator 4 controls the movable plate 31 to reset by pushing the movable plate 31 until the movable plate 31 returns to the initial position;

[0054] Casting the blank again, by pouring into the blank casting area 3 until the remaining blank casting area 3 is filled;

[0055] S9, after the casting is formed, it is drained for 4-8 hours;

[0056] S10, cool the semi-finished product in a cold storage with a temperature between 0°C and 4°C;

[0057] S11, disinfecting the tofu box and the cover film, and demoulding and packaging the semi-finished product obtained in step S10;

[0058] S12, packing the packaged tofu boxes, and after leak testing, storing the packed tofu in a cold storage at a temperature between 0°C and 4°C;

[0059] S13. Loop steps S1-S12.

[0060] The basic production process adopted in the present invention is basically the same as the basic production process in the patent literature in the background technology. The main difference is that in order to exhaust the slurry, the present invention adopts the rotating operation of the rotating equipment 1. By gradually reducing the thickness of the slurry and changing the centrifugal force, the bubbles in the cooked soy milk are removed, and the regulator 4 is used to adjust the casting area 3 in real time during the casting process. After the cooked soy milk is cast, a lateral buffer is formed, and multiple casting compacting operations are formed, thereby reducing the generation of bubbles in the cooked soy milk during the casting process. In addition, the real-time adjustment of the casting area 3 by the rotating equipment 1 and the regulator 4 greatly improves the compacting effect of the casting, makes the tofu more compact, and greatly improves its practicality.

[0061] In the embodiment of the present invention, in addition to adopting the basic firewood manual process, the exhaust method of the rotating device 1 and the specific casting equipment are used to reduce the generation of bubbles in the cooked tofu. The two complement each other, so that the soy milk can be firmly solidified to form tofu, changing the traditional exhaust method, and further avoiding the generation of bubbles in the casting process.

[0062] Furthermore, the rotating device 1 includes a main cylinder 10, a feed port 101 and a discharge port 102 provided on the main cylinder 10, mechanical seals provided at both ends of the main cylinder 10, and a rotating motor 11 for driving the main cylinder 10 to rotate. A thickness detector for monitoring the real-time thickness of the soy milk liquid is provided in the main cylinder 10, and a flow detector for monitoring the real-time flow of the soy milk liquid is also provided at the feed port 101 of the main cylinder 10. In order to improve the exhaust operation of the cooked tofu, the rotating device 1 is configured to include the main cylinder 10, the feed port 101 and the discharge port 102 provided on the main cylinder 10. 102. Mechanical seals are provided at both ends of the main cylinder 10 and a rotary motor 11 is used to drive the main cylinder 10 to rotate. A thickness detector is provided in the main cylinder 10 for monitoring the real-time thickness of the soy milk liquid. The feed port 101 of the main cylinder 10 is also provided with a flow detector for monitoring the real-time flow rate of the soy milk liquid. The thickness of the soy milk liquid in the main cylinder 10 and the flow thickness are monitored by the provided thickness detector and flow detector, thereby achieving de-aeration of the cooked soy milk, thereby improving the firmness of the tofu after casting and having a better taste.

[0063] Furthermore, the specific exhaust method of the rotating device 1 is as follows: receiving the monitoring parameters of the thickness detector and the flow detector in real time, the monitoring parameters are composed of the thickness of the liquid on the inner surface of the cylinder sent by the thickness detector and the liquid flow rate of the feed inlet 101 sent by the flow detector; and presetting the parameters for the thickness achieved;

[0064] Then, a relative parameter ratio H is calculated based on the monitoring parameters monitored by the thickness detector and the preset parameters. The relative parameter ratio H is used to represent the difference between the monitoring parameters and the preset parameters. The relative parameter ratio H = (current slurry thickness - target slurry thickness) / target slurry thickness;

[0065] Finally, the rotational speed of the driving motor is adjusted based on the relative parameter ratio to reduce the difference between the monitoring parameter and the preset parameter.

[0066] Regarding the control of the above-mentioned rotary exhaust, first of all, the rotary exhaust has centrifugal exhaust and gradually thins the thickness of the soy milk liquid, so that bubbles can form a gradual exhaust operation as the soy milk liquid becomes thinner, and compares the parameters monitored by the thickness detector with the preset parameters, and calculates the relative parameter ratio. The speed of the drive motor is adjusted to reduce the difference between the monitored thickness parameters and the preset thickness parameters, thereby realizing the emission control of bubbles in cooked soy milk. The monitoring data is stable, and the practicality is greatly improved. At the same time, the processing speed is also greatly improved.

[0067] Furthermore, in the embodiment of the present invention, a flow detector of the feed liquid is added, which can ensure the continuity of the exhaust through real-time monitoring of the flow rate, thereby greatly improving the practicality.

[0068] Furthermore, the regulator 4 includes a driving part 20 and a pushing air chamber 21, which is transmission-connected to the movable plate 31. The driving part 20 includes a driving air chamber 23 connected to the pushing air chamber 21 and a buffer part 22 arranged between the pushing air chamber 21 and the driving air chamber 23. The buffer part 22 includes a first inner push plate 220 for driving the pushing air chamber 21 to form an air pressure change, a second inner push plate 222 arranged in the driving air chamber 23 and connected to the first inner push plate 220 through a connecting rod 221, and a buffer spring 24 arranged between the first inner push plate 220 and the driving air chamber 23 and sleeved outside the connecting rod 221.

[0069] The present invention is further configured as follows: the driving air chamber 23 includes a regulating air port 230 and a driving air port 231, the driving air port 231 is connected to a driving air pump 232 and an electromagnetic on-off valve 233 for regulating the on-off of the driving air port 231, and an electromagnetic one-way valve 234 is provided on the regulating air hole. The electromagnetic one-way valve 234 is configured so that when the electromagnetic on-off valve 233 is opened, the electromagnetic one-way valve 234 is in a closed state; when the electromagnetic on-off valve 233 is closed, the electromagnetic one-way valve 234 is in a one-way air outlet state. In order to ensure that during the casting process, the casting process can be allowed to proceed smoothly, the casting process can be allowed to proceed smoothly. The cooked soy milk in the area 3 can be more compacted, and the generation of bubbles in the pouring process is reduced. The regulator 4 is set to include a driving part 20 and a pushing air chamber 21, and the pushing air chamber 21 is connected to the movable plate 31 by transmission. The driving part 20 includes a driving air chamber 23 connected to the pushing air chamber 21 and a buffer part 22 arranged between the pushing air chamber 21 and the driving air chamber 23. The present invention uses the driving part 20 and the pushing air chamber 21 as the main regulating parts. Because the pushing air chamber 21 and the movable plate 31 are connected, the movable plate 31 will push the pushing air chamber 23 when it is subjected to force. 1 forms pressure, and the buffer part 22 includes a first inner push plate 220 for driving the push air chamber 21 to form an air pressure change, a second inner push plate 222 arranged in the driving air chamber 23 and connected to the first inner push plate 220 through a connecting rod 221, and a buffer spring 24 arranged between the first inner push plate 220 and the driving air chamber 23 and sleeved outside the connecting rod 221, so that a first buffer is formed by the buffer spring 24, and in the present invention, the driving air chamber 23 includes an adjusting air port 230 and a driving air port 231, and the driving air port 231 is connected to a driving air pump 232 and a buffer spring 24 for driving the driving air chamber 23. The electromagnetic on-off valve 233 for regulating the on-off of the air port 231 is provided with an electromagnetic one-way valve 234 on the regulating air hole. The electromagnetic one-way valve 234 is configured so that when the electromagnetic on-off valve 233 is opened, the electromagnetic one-way valve 234 is in a closed state; when the electromagnetic on-off valve 233 is closed, the electromagnetic one-way valve 234 is in a one-way air outlet state, so that after closing the electromagnetic on-off valve 233, the electromagnetic one-way valve 234 can maintain a continuous air outlet state, thereby maintaining the position of the movable plate 31, achieving a lateral buffering effect when pouring the billet, reducing the generation of bubbles in the cooked soy milk, and greatly improving practicality.

[0070] Furthermore, the specific adjustment method of the regulator 4 is as follows: the initial position of the movable plate 31 is recorded by the displacement sensor;

[0071] When the cooked soy milk is discharged from the rotating device 1 to the casting area 3, the movable plate 31 is pressed and moves toward the driving air chamber 23. The regulating air port 230 of the driving air chamber 23 is exhausted, and after the air pressure is stabilized, the movable plate 31 stops moving.

[0072] After the pressure is constant, the driving air chamber 23 of the regulator 4 increases the air pressure in the driving air chamber 23 by driving the air pump 232, pushing the second inner push plate 222 to push the movable plate 31 to reset, and pushing the movable plate 31 until the movable plate 31 returns to the initial position;

[0073] Repeat the pouring action of the cooked soy milk and repeat the air pressure adjustment action of the driving air chamber 23 until the pouring is completed.

[0074] In the embodiment of the present invention, the cooked soy milk after passing through the rotating device 1 is cast into molds, and as the pressure continues to increase, the pressure of the movable plate 31 can be adjusted, and as the thickness of the cast mold continues to increase, the pressure formed will gradually increase. When resetting, the air pressure in the driving air chamber 23 can be gradually adjusted by the driving air pump 232, thereby achieving continuous buffering of the casting process and reducing the generation of bubbles due to excessive casting speed.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A production process for firming handmade black tofu made with firewood, characterized in that: Specifically, the steps include: S1, selecting high-quality soybeans and black sesame seeds, and removing blackened or moldy soybeans and low-quality black sesame seeds; and preparing defoaming agent, magnesium chloride, tofu boxes, and covering films; S2. Soak the soybeans selected in step S1 in mountain stream water, stirring the soybeans during the soaking process and washing away impurities therein; S3, while step S2 is being carried out, stir-frying the selected high-quality black sesame seeds, and crushing the stir-fried black sesame seeds into a paste for preparation; S4, grinding the soybeans processed in step S2, and filtering the ground pulp to separate the soy milk portion. An appropriate amount of defoaming agent needs to be added during the grinding process; S5, boiling the soy milk filtered in step S4, the boiling temperature needs to reach above 95°C, and adding a defoaming agent twice during the boiling process; S6, performing secondary filtration on the soy milk after cooking in step S5 to remove residues to obtain cooked soy milk, and adding a small amount of magnesium chloride and a small amount of black sesame paste to the cooked soy milk to solidify the soy milk; S7, performing preliminary rotational exhaust on the cooked soymilk obtained in step S6. The specific rotational exhaust method is as follows: the cooked soymilk obtained is introduced into the rotating device (1), and the rotating device (1) is configured to gradually reduce the thickness of the cooked soymilk on the rotating cylinder wall after the cooked soymilk is introduced, thereby exhausting the gas in the soymilk liquid and finally exhausting it along the cylinder wall of the rotating device (1); S8, introducing the cooked soymilk that has undergone preliminary exhaust in step S7 into a secondary exhaust device (2), the secondary exhaust device (2) comprising a casting area (3), the casting area (3) comprising baffles (30) on both sides and a movable plate (31) disposed between the baffles (30) on both sides, both movable plates (31) being connected to a regulator (4), the regulator (4) being started to drive the movable plates (31), the two movable plates (31) and the baffles (30) on both sides being in contact with each other to form the casting area (3), the regulator (4) being configured to move the movable plates (31) in real time as the casting pressure increases; After the cooked soy milk is first led out from the rotating device (1), the cooked soy milk is poured into the casting area (3), and the casting value is set to ensure that the volume of the cast cooked soy milk is between 3 / 5 and 4 / 5 of the volume of the casting area (3); Recording the moving position of the movable plate (31) after being subjected to the pressure of the casting process, recording the initial position of the movable plate (31) by a displacement sensor provided on the regulator (4), and then recording the position of the movable plate (31) after the cooked soy milk is cast into the casting process, because the movable plate (31) after displacement will maintain the position after the displacement due to the control of the regulator (4), and until the movable plate (31) is no longer subjected to the force, the pressure detector in the regulator (4) detects whether the pressure is at a constant value; After the pressure is constant, the regulator (4) controls the movable plate (31) to reset by pushing the movable plate (31) until the movable plate (31) returns to the initial position; Casting the blank again, by pouring into the blank casting area (3) until the remaining blank casting area (3) is filled; S9, after the casting is formed, it is drained for 4-8 hours; S10, cool the semi-finished product in a cold storage with a temperature between 0°C and 4°C; S11, disinfecting the tofu box and the cover film, and demoulding and packaging the semi-finished product obtained in step S10; S12, packing the packaged tofu boxes, and after leak testing, storing the packed tofu in a cold storage at a temperature between 0°C and 4°C; S13. Loop steps S1-S12.

2. The compacting production process of a firewood-fired handmade black tofu according to claim 1, characterized in that: The rotating device (1) comprises a main cylinder (10), a feed port (101) and a discharge port (102) arranged on the main cylinder (10), mechanical seals arranged at both ends of the main cylinder (10), and a rotating motor (11) for driving the main cylinder (10) to rotate. A thickness detector for monitoring the real-time thickness of the soy milk liquid is provided in the main cylinder (10), and a flow detector for monitoring the real-time flow rate of the soy milk liquid is also provided at the feed port (101) of the main cylinder (10).

3. The compacting production process of a firewood-fired handmade black tofu according to claim 2, characterized in that: The specific exhaust method of the rotating device (1) is as follows: receiving monitoring parameters of a thickness detector and a flow detector in real time, wherein the monitoring parameters are composed of the thickness of the liquid on the inner surface of the cylinder sent by the thickness detector and the liquid flow rate of the feed inlet (101) sent by the flow detector; and presetting parameters for the thickness achieved; Then, a relative parameter ratio H is calculated based on the monitoring parameters monitored by the thickness detector and the preset parameters. The relative parameter ratio H is used to represent the difference between the monitoring parameters and the preset parameters. The relative parameter ratio H = (current slurry thickness - target slurry thickness) / target slurry thickness; Finally, the rotational speed of the driving motor is adjusted based on the relative parameter ratio to reduce the difference between the monitoring parameter and the preset parameter.

4. The process for compacting handmade black tofu cooked with firewood according to claim 1, wherein: The regulator (4) includes a driving portion (20) and a pushing air chamber (21), wherein the pushing air chamber (21) is transmission-connected to the movable plate (31), the driving portion (20) includes a driving air chamber (23) connected to the pushing air chamber (21), and a buffer portion (22) arranged between the pushing air chamber (21) and the driving air chamber (23), wherein the buffer portion (22) includes a first inner pushing plate (220) for driving the pushing air chamber (21) to form an air pressure change, a second inner pushing plate (222) arranged in the driving air chamber (23) and connected to the first inner pushing plate (220) through a connecting rod (221), and a buffer spring (24) arranged between the first inner pushing plate (220) and the driving air chamber (23) and sleeved outside the connecting rod (221).

5. The compacting production process of handmade black tofu cooked with firewood according to claim 4, characterized in that: The driving air chamber (23) comprises a regulating air port (230) and a driving air port (231); the driving air port (231) is connected to a driving air pump (232) and an electromagnetic on-off valve (233) for regulating the on-off state of the driving air port (231); an electromagnetic one-way valve (234) is provided on the regulating air port; the electromagnetic one-way valve (234) is configured such that when the electromagnetic on-off valve (233) is opened, the electromagnetic one-way valve (234) is in a closed state; and when the electromagnetic on-off valve (233) is closed, the electromagnetic one-way valve (234) is in a one-way air outlet state.

6. The process for compacting handmade black tofu cooked with firewood according to claim 5, characterized in that: The specific adjustment method of the regulator (4) is as follows: the initial position of the movable plate (31) is recorded by a displacement sensor; When the cooked soy milk is discharged from the rotating device (1) to the casting area (3), the movable plate (31) is pressed and moves toward the driving air chamber (23). The regulating air port (230) of the driving air chamber (23) is exhausted, and after the air pressure is stabilized, the movable plate (31) stops moving. After the pressure is constant, the driving air chamber (23) of the regulator (4) increases the air pressure in the driving air chamber (23) by driving the air pump (232), pushing the second inner push plate (222) to push the movable plate (31) to reset, and pushing the movable plate (31) until the movable plate (31) returns to the initial position; Repeat the pouring action of the cooked soy milk and repeat the air pressure adjustment action of the driving air chamber (23) until the pouring is completed.

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