Soybean curd skin processing production equipment and method

Abstract

The invention relates to the technical field of bean curd processing, and particularly discloses bean curd skin processing production equipment and method.The bean curd skin processing production equipment comprises a bottom plate and a bean curd stick, the top of the bottom plate is connected with a top plate through a fixing frame, and the bottom of the top plate is provided with a bean curd stick hardness enhancing mechanism used for enhancing the hardness of the bean curd stick; and a slicing mechanism for slicing the bean curd sticks is arranged at the bottom of the bottom plate. The tofu stick is sliced when the tofu stick skin on the outer layer of the tofu stick is in a hardened state, so that the tofu stick skin on the outer layer of the tofu stick can be prevented from being deformed during slicing, and the tofu stick skin on the outer layer of the tofu stick can be prevented from being deformed during slicing; the tofu stick skin on the outer layer of the tofu stick is kept in a straight state before and after slicing, the tofu stick cannot be loosened after slicing, and the sliced tofu slices are kept in a roll.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bean curd processing, and particularly relates to a bean curd skin processing and production device and method. BACKGROUND

[0002] Bean curd skin is a thin film of boiled soy milk surface coagulation, which can be eaten fresh or dried for consumption, and is a common food raw material in East Asia.

[0003] Its manufacturing process includes soaking soybeans, grinding pulp, boiling pulp, picking film, etc., and different processes can produce different forms of bean products.

[0004] High nutritional value, rich in high-quality protein, lecithin, calcium, iron, etc., low fat, can prevent cardiovascular disease and osteoporosis.

[0005] Various eating methods, such as cold bean curd skin, bean curd skin fried meat, and vegetarian duck.

[0006] Different regions have characteristic methods, such as Yunnan Shiping bean curd skin, Fujian Qingliu Songxi bean curd skin, and Henan Kaifeng bean curd stick.

[0007] Bean curd stick is popular in Kaifeng, Henan, and the local area has extended bean curd stick slicing food, which cuts the traditional bean curd stick into thin slices for stir-frying. When slicing the bean curd stick, manual slicing is often used, but manual slicing is difficult because the bean curd stick is soft and deforms when sliced, causing the sliced bean curd to loosen and be difficult to roll. SUMMARY

[0008] The present application aims to solve the problems in the prior art and provides a bean curd skin processing and production device and method.

[0009] To achieve the above purpose, the present application adopts the following technical scheme: A bean curd skin processing and production device, comprising a bottom plate and a bean curd stick, the top of the bottom plate is connected with a top plate through a fixing frame, the bottom of the top plate is provided with a bean curd stick hardness strengthening mechanism for strengthening the hardness of the bean curd stick, and the bottom of the bottom plate is provided with a slicing mechanism for slicing the bean curd stick. The tofu stick hardness strengthening mechanism comprises a positive and negative tooth bidirectional screw rod rotatably installed at the bottom of the top plate, two threaded sleeves of the positive and negative tooth bidirectional screw rod are threadedly connected on the threaded rods with opposite rotation directions, a limiting assembly for limiting the inner threaded blocks is arranged at the bottom of the top plate, reciprocating air cylinders are installed at the bottoms of the two inner threaded blocks, clamping copper plates are installed at the ends of the piston rods of the reciprocating air cylinders, installation grooves are formed on the sides of the two clamping copper plates away from each other, a plurality of installation holes are formed in the installation grooves, nozzles are installed in the installation holes, the nozzles are communicated with a connecting pipe, a liquid nitrogen tank is installed at the top of the top plate, the liquid nitrogen tank is communicated with a second bellows, the second bellows is communicated with the connecting pipe, a liquid nitrogen pump is arranged in the second bellows, a bearing plate is installed at the top of the bottom plate, and the bearing plate is located between the two clamping copper plates.

[0010] Preferably, an electric heating plate is installed on the inner wall of the installation groove, a water tank is installed at the top of the liquid nitrogen tank, the water tank is communicated with a first bellows, the first bellows is communicated with the connecting pipe, a liquid pump is arranged in the first bellows, a first electronic valve is arranged at the communication position of the first bellows and the connecting pipe, and a second electronic valve is arranged at the communication position of the second bellows and the connecting pipe.

[0011] Preferably, an opening is formed in the inner wall of the installation groove, an L-shaped plate is installed in the installation groove, an inclined slope is formed at the top of the L-shaped plate, the low end of the inclined slope is located on the side of the L-shaped plate close to the clamping copper plate, the tofu stick is placed on the L-shaped plate, the upper surface of the L-shaped plate is flush with the inner bottom wall of the opening, the opening is located above the plurality of nozzles, and an electric gate is installed in the opening.

[0012] Preferably, the limiting assembly comprises first and second fixed plates symmetrically installed at the bottom of the top plate, the positive and negative tooth bidirectional screw rod is rotatably installed between the first and second fixed plates, a sliding rod is installed between the first and second fixed plates, the two inner threaded blocks are each provided with a sliding sleeve at the top, and the two sliding sleeves are slidably connected to the sliding rod.

[0013] Preferably, the second fixed plate is provided with a first motor at the side away from the positive and negative tooth bidirectional screw rod, the output shaft of the first motor penetrates through the second fixed plate and is connected with the positive and negative tooth bidirectional screw rod, a bearing is installed on the side of the first fixed plate close to the positive and negative tooth bidirectional screw rod, and the end of the positive and negative tooth bidirectional screw rod is installed in the inner ring of the bearing.

[0014] Preferably, the inner threaded block is provided with a first mounting piece at the bottom, the reciprocating air cylinder is installed at the bottom of the first mounting piece, a reinforcing block is installed at the end of the piston rod of the reciprocating air cylinder, and the reinforcing block is fixedly connected to the top of the clamping copper plate.

[0015] Preferably, the bottom plate top is provided with a support plate, the support plate top is provided with a strip-shaped plate, the strip-shaped plate top is provided with a connecting plate, the bearing plate is installed on the connecting plate top, the bearing plate top is provided with an arc-shaped groove matched with the outer wall of the bean curd stick, the arc-shaped groove and the bean curd stick have the same center, the sponge layer is installed in the arc-shaped groove, the bearing plate and the sponge layer are both provided with a strip-shaped opening, the strip-shaped plate top is provided with a first guide rail, the first guide rail is slidably provided with a first electric sliding block, the first electric sliding block top is provided with an electric telescopic rod, the piston rod tail end of the electric telescopic rod is provided with a push rod, and the push rod is located in the strip-shaped opening.

[0016] Preferably, the slicing mechanism comprises a mounting disc installed on the bottom plate top, the mounting disc and the arc-shaped groove have the same center, the mounting disc side close to the bearing plate is provided with an annular second guide rail, the second guide rail and the arc-shaped groove have the same center, the second guide rail is slidably provided with two second electric sliding blocks, the two second electric sliding blocks are symmetrically arranged on the second guide rail, the second electric sliding block side close to the bearing plate is provided with a mounting plate, the mounting plate side close to the bearing plate is provided with a third guide rail, the third guide rail is slidably provided with a third electric sliding block, the third electric sliding block side close to the bearing plate is provided with a second motor, the output shaft of the second motor is connected with a winding shaft, and the two winding shafts are jointly wound with a metal cutting line.

[0017] Preferably, the bottom plate top is provided with a rectangular plate, the mounting disc is installed on the rectangular plate top, the third electric sliding block side close to the bearing plate is provided with a second mounting piece, the second motor is installed on the second mounting piece side away from the third electric sliding block, and the bottom plate top is provided with a collection box, and the collection box is located directly below the metal cutting line.

[0018] The production method of the bean curd skin processing and production equipment comprises the following steps: S1: automatically feeding the bean curd stick; S2: straightening the fed bean curd stick; S3: pre-washing the straightened bean curd stick; S4: drying the washed bean curd stick; S5: rapidly freezing and shaping the dried bean curd stick; S6: slicing the frozen bean curd stick to complete the slicing of the bean curd stick 49.

[0019] Compared with the prior art, the bean curd skin processing and production equipment has the following beneficial effects: 1: In the application, liquid nitrogen is uniformly sprayed on the surface of the tofu stick during the process of rubbing the tofu stick between two clamping copper plates, which can quickly cool the tofu stick by using liquid nitrogen. The low temperature can harden the rubber, and the spraying of liquid nitrogen on the surface of the tofu stick can quickly cool and freeze the outer layer of the tofu stick skin, so that the outer layer of the tofu stick skin is quickly hardened and brittle. The straightened tofu stick can be frozen and hardened, so that the straightened tofu stick can be shaped. The straightened tofu stick can keep its straightness, so that the straightened tofu stick can be sliced in a straight state.

[0020] 2: In the application, the outer layer of the tofu stick skin can be kept in a hardened state during the slicing process of the tofu stick, so that the outer layer of the tofu stick skin is not deformed under stress during slicing. The outer layer of the tofu stick skin is sliced in a hardened state, which can not only avoid deformation of the outer layer of the tofu stick skin during slicing, but also keep the outer layer of the tofu stick skin in a straight state before and after slicing. In addition, the tofu stick will not be loose after slicing.

[0021] 3: In the application, liquid nitrogen is used to quickly cool and freeze the tofu stick, so that the outer layer of the tofu stick skin is hardened and brittle. The principle of thermal expansion and cold contraction can be used to make the outer layer of the tofu stick skin quickly shrink due to cold, so that the outer layer of the tofu stick skin tightly wraps around the tofu stick, making the outer layer of the tofu stick skin more tightly wrapped around the tofu stick. The tofu stick and the outer layer of the tofu stick skin can be kept in a tightly connected state after slicing.

[0022] 4: In the application, liquid nitrogen is used to quickly cool and freeze the tofu stick, so that the outer layer of the tofu stick skin is hardened and brittle. The tofu stick and the outer layer of the tofu stick skin can be sliced at the same time, so that the tofu stick can be completely sliced. The sliced tofu stick and the outer layer of the tofu stick skin are an integral whole, so that the outer layer of the tofu stick skin keeps wrapping the tofu stick. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The first perspective view of the structure of the tofu skin processing and production equipment is provided. Figure 2A second perspective view of the structure of the soy skin processing equipment according to the present application is shown in the figure. Figure 3 A connection diagram of the bottom plate and the rectangular plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 4 A connection diagram of the top plate and the first fixed plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 5 A connection diagram of the clamping copper plate and the electric gate of the soy skin processing equipment according to the present application is shown in the figure. Figure 6 A connection diagram of the clamping copper plate and the L-shaped plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 7 A structure diagram of the clamping copper plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 8 A connection diagram of the support plate and the strip-shaped plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 9 A connection diagram of the strip-shaped plate and the connecting plate of the soy skin processing equipment according to the present application is shown in the figure. Figure 10 A Figure 9 A local enlarged view of part A in the figure. Figure 11 A connection diagram of the mounting disc and the second guide rail of the soy skin processing equipment according to the present application is shown in the figure. Figure 12 A Figure 11 A local enlarged view of part B in the figure.

[0024] In the figure: 1, bottom plate; 2, fixed frame; 3, top plate; 4, liquid nitrogen tank; 5, water tank; 6, first fixed plate; 7, second fixed plate; 8, bidirectional screw with forward and reverse teeth; 9, internally threaded block; 10, first mounting piece; 11, reciprocating air cylinder; 12, clamping copper plate; 13, rectangular plate; 14, mounting disc; 15, first motor; 16, bearing; 17, collection box; 18, first bellows; 19, liquid pump; 20, second bellows; 21, liquid nitrogen pump; 22, sliding sleeve; 23, sliding rod; 24, support plate; 25, strip-shaped plate; 26, L-shaped plate; 27, opening; 28, electric gate; 29, mounting hole; 30, spray head; 31, mounting groove; 32, connecting plate; 33, bearing plate; 34, sponge layer; 35, strip-shaped opening; 36, lever; 37, first guide rail; 38, first electric sliding block; 39, electric telescopic rod; 40, second guide rail; 41, second electric sliding block; 42, mounting plate; 43, third guide rail; 44, third electric sliding block; 45, second mounting piece; 46, second motor; 47, winding shaft; 48, metal cutting line; 49, tofu stick. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0026] Referring to Figures 1-12 A bean curd skin processing and production equipment, including the bottom plate 1 and the bean curd stick 49, the top of the bottom plate 1 is connected with the top plate 3 through the fixing frame 2, the bottom of the top plate 3 is provided with a bean curd stick hardness strengthening mechanism for strengthening the hardness of the bean curd stick, and the bottom of the bottom plate 1 is provided with a slicing mechanism for slicing the bean curd stick; The bean curd stick hardness strengthening mechanism comprises a positive and negative tooth bidirectional screw rod 8 rotatably installed at the bottom of the top plate 3, the two sections of threads of the positive and negative tooth bidirectional screw rod 8 are oppositely threaded on the threaded rods, and the two sections of threads are both threadedly sleeved with internal threaded blocks 9, the bottom of the top plate 3 is provided with a limiting assembly for limiting the internal threaded blocks 9, the bottom of each of the two internal threaded blocks 9 is installed with a reciprocating air cylinder 11, the end of the piston rod of the reciprocating air cylinder 11 is installed with a clamping copper plate 12, and the side of each of the two clamping copper plates 12 away from each other is provided with an installation groove 31, a plurality of installation holes 29 are formed in the installation groove 31, a spray head 30 is installed in the installation hole 29, a plurality of spray heads 30 are communicated with a connecting pipe, the top of the top plate 3 is installed with a liquid nitrogen tank 4, the liquid nitrogen tank 4 is communicated with a second bellows pipe 20, the second bellows pipe 20 is communicated with the connecting pipe, a liquid nitrogen pump 21 is arranged in the second bellows pipe 20, and the top of the bottom plate 1 is installed with a bearing plate 33, the bearing plate 33 is located between the two clamping copper plates 12.

[0027] As a technical optimization scheme of the present application, an electric heating plate is installed on the inner wall of the installation groove 31, a water tank 5 is installed on the top of the liquid nitrogen tank 4, the water tank 5 is communicated with a first bellows pipe 18, the first bellows pipe 18 is communicated with the connecting pipe, a liquid pump 19 is arranged in the first bellows pipe 18, a first electronic valve is arranged at the communication position of the first bellows pipe 18 and the connecting pipe, and a second electronic valve is arranged at the communication position of the second bellows pipe 20 and the connecting pipe.

[0028] As a technical optimization scheme of the present application, an opening 27 is formed in the inner wall of the installation groove 31, an L-shaped plate 26 is installed in the installation groove 31, an inclined slope is formed on the top of the L-shaped plate 26, the low end of the inclined slope is located on the side of the L-shaped plate 26 close to the clamping copper plate 12, the bean curd stick 49 is placed on the L-shaped plate 26, the upper surface of the L-shaped plate 26 is flush with the inner bottom wall of the opening 27, the opening 27 is located above the plurality of spray heads 30, and an electric gate 28 is installed in the opening 27.

[0029] As a technical optimization scheme of the present application, the limiting assembly comprises the first fixed plate 6 and the second fixed plate 7 symmetrically installed at the bottom of the top plate 3, the bidirectional screw rod 8 with positive and negative teeth is rotatably installed between the first fixed plate 6 and the second fixed plate 7, the slide rod 23 is installed between the first fixed plate 6 and the second fixed plate 7, the two inner threaded blocks 9 are each provided with a sliding sleeve 22 at the top, and the two sliding sleeves 22 are each slidably sleeved on the slide rod 23. Through the cooperation of the sliding sleeve 22 and the slide rod 23, the inner threaded block 9 can be limited, so that the inner threaded block 9 moves transversely on the bidirectional screw rod 8 with positive and negative teeth.

[0030] As a technical optimization scheme of the present application, the first motor 15 is installed on the side of the second fixed plate 7 away from the bidirectional screw rod 8 with positive and negative teeth, the output shaft of the first motor 15 penetrates through the second fixed plate 7 and is connected with the bidirectional screw rod 8 with positive and negative teeth, the bearing 16 is installed on the side of the first fixed plate 6 close to the bidirectional screw rod 8 with positive and negative teeth, and the end of the bidirectional screw rod 8 with positive and negative teeth is installed in the inner ring of the bearing 16. The bearing 16 can guide the bidirectional screw rod 8 with positive and negative teeth, and improve the stability of the rotation of the bidirectional screw rod 8 with positive and negative teeth.

[0031] As a technical optimization scheme of the present application, the first mounting piece 10 is installed at the bottom of the inner threaded block 9, the reciprocating air cylinder 11 is installed at the bottom of the first mounting piece 10, the reinforcing block is installed at the end of the piston rod of the reciprocating air cylinder 11, the reinforcing block is fixedly connected to the top of the clamping copper plate 12, and the reinforcing block can increase the connection strength between the end of the piston rod of the reciprocating air cylinder 11 and the clamping copper plate 12.

[0032] As a technical optimization scheme of the present application, the support plate 24 is installed at the top of the bottom plate 1, the strip-shaped plate 25 is installed at the top of the support plate 24, the connecting plate 32 is installed at the top of the strip-shaped plate 25, the bearing plate 33 is installed at the top of the connecting plate 32, the arc-shaped groove matched with the outer wall of the bean curd stick 49 is formed in the top of the bearing plate 33, the arc-shaped groove is concentric with the bean curd stick 49, the sponge layer 34 is installed in the arc-shaped groove, the strip-shaped opening 35 is formed in the bearing plate 33 and the sponge layer 34, the first guide rail 37 is installed at the top of the strip-shaped plate 25, the first electric sliding block 38 is slidably installed on the first guide rail 37, the electric telescopic rod 39 is installed at the top of the first electric sliding block 38, the stirring rod 36 is installed at the end of the piston rod of the electric telescopic rod 39, the stirring rod 36 is located in the strip-shaped opening 35, the arc-shaped groove can stably bear the bean curd stick 49, the sponge layer 34 can provide buffering between the bearing plate 33 and the bean curd stick 49, and rigid collision between the bean curd stick 49 and the bearing plate 33 during feeding is avoided, so that the bean curd stick 49 is not damaged.

[0033] As a technical optimization scheme of the present application, the slicing mechanism comprises a mounting disc 14 mounted on the top of the bottom plate 1, the mounting disc 14 is concentric with the arc-shaped groove, a second guide rail 40 in the form of a ring is mounted on the side of the mounting disc 14 close to the bearing plate 33, the second guide rail 40 is concentric with the arc-shaped groove, two second electric sliding blocks 41 are slidingly mounted on the second guide rail 40, the two second electric sliding blocks 41 are symmetrically arranged on the second guide rail 40, a mounting plate 42 is mounted on the side of the second electric sliding block 41 close to the bearing plate 33, a third guide rail 43 is mounted on the side of the mounting plate 42 close to the bearing plate 33, a third electric sliding block 44 is slidingly mounted on the third guide rail 43, a second motor 46 is mounted on the side of the third electric sliding block 44 close to the bearing plate 33, the output shaft of the second motor 46 is connected with a winding shaft 47, and the two winding shafts 47 are jointly wound with a metal cutting wire 48.

[0034] As a technical optimization scheme of the present application, the bottom plate 1 is provided with a rectangular plate 13 mounted on the top of the bottom plate 1, the mounting disc 14 is mounted on the top of the rectangular plate 13, the third electric sliding block 44 is provided with a second mounting piece 45 mounted on the side of the third electric sliding block 44 close to the bearing plate 33, and the second motor 46 is mounted on the side of the second mounting piece 45 away from the third electric sliding block 44, so that the rectangular plate 13 can facilitate the connection between the bottom plate 1 and the mounting disc 14, the top of the bottom plate 1 is provided with a collecting box 17 located directly below the metal cutting wire 48, and the collecting box 17 can facilitate the collection of the sliced tofu sticks 49, so that the sliced tofu sticks 49 can fall into the collecting box 17 for unified collection and treatment.

[0035] The production method of the soy skin processing and production equipment in the present application comprises the following steps: S1: automatically feeding the tofu sticks 49; S2: straightening the fed tofu sticks 49; S3: pre-washing the straightened tofu sticks 49; S4: drying the washed tofu sticks 49; S5: rapidly freezing and shaping the dried tofu sticks 49; S6: slicing the frozen tofu sticks 49 to complete the slicing of the tofu sticks 49.

[0036] When the tofu stick 49 needs to be sliced, place the tofu stick 49 to be sliced on the L-shaped plate 26, and the tofu stick 49 can roll along the slope on the top of the L-shaped plate 26 to the clamping copper plate 12. At this time, start the first motor 15, and the output shaft of the first motor 15 drives the bidirectional screw 8 to rotate, and then the two internally threaded blocks 9 move towards each other, and then the two clamping copper plates 12 move towards each other, and stop when the distance between the two clamping copper plates 12 is 1 cm larger than the diameter of the tofu stick 49. Open the electric gate 28, and the tofu stick 49 on the top of the L-shaped plate 26 can roll through the opening 27 to the space between the two clamping copper plates 12 and fall on the top of the bearing plate 33. The tofu stick 49 can be automatically fed to the bearing plate 33, and the feeding of the tofu stick 49 can be automatically completed.

[0037] After the tofu stick 49 is fed to the top of the bearing plate 33, start the first motor 15 again, and the two clamping copper plates 12 move towards each other, and stop when the distance between the two clamping copper plates 12 is equal to the diameter of the tofu stick 49. At this time, start the two reciprocating cylinders 11, and when the piston rod of one reciprocating cylinder 11 extends, the piston rod of the other reciprocating cylinder 11 retracts, and then one clamping copper plate 12 moves upwards and the other clamping copper plate 12 moves downwards, so that the two clamping copper plates 12 move in a rubbing motion, and then the two clamping copper plates 12 rub the tofu stick 49. When the distance between the two clamping copper plates 12 is equal to the diameter of the tofu stick 49, the two clamping copper plates 12 rub the tofu stick 49, which can straighten the curved tofu stick 49, and then the tofu stick 49 can be straightened, so that the tofu stick 49 remains straight before slicing, and the slicing accuracy of the tofu stick 49 is improved.

[0038] When the two clamping copper plates 12 straighten the tofu stick 49, start the liquid pump 19, open the first electronic valve at the communication between the first bellows 18 and the connecting pipe, and close the second electronic valve at the communication between the second bellows 20 and the connecting pipe. The liquid pump 19 can pump the water in the water tank 5 into the first bellows 18, and then the water in the water tank 5 enters the connecting pipe through the first bellows 18. The water in the connecting pipe can be sprayed out through the spray head 30 to wash the tofu stick 49 in the rubbing process, so that the tofu stick 49 can be cleaned by water, and then the impurities and dirt on the surface of the tofu stick 49 can be washed away, to ensure the cleanliness of the tofu stick 49 before slicing.

[0039] At this time, the electric heating plate in the installation groove 31 is started, and the electric heating plate transmits heat to the clamping copper plate 12, and the clamping copper plate 12 can transmit heat to the tofu stick 49 kneaded between the two clamping copper plates 12, which can evaporate the water spots on the surface of the tofu stick 49 by using the heat of the electric heating plate, and can heat and dry the tofu stick 49, to ensure the dryness of the tofu stick 49 before slicing.

[0040] After the water spraying cleaning of the tofu stick 49 is completed, and the straightening of the tofu stick 49 by the two clamping copper plates 12 is completed, the two clamping copper plates 12 continue to knead the tofu stick 49, the liquid pump 19 and the first electronic valve gate connecting the first corrugated pipe 18 and the connecting pipe are closed, the second electronic valve gate connecting the second corrugated pipe 20 and the connecting pipe is opened, and the liquid nitrogen pump 21 is started. The liquid nitrogen pump 21 can extract the liquid nitrogen in the liquid nitrogen tank 4 into the second corrugated pipe 20, and the liquid nitrogen entering the second corrugated pipe 20 can be sprayed out through the connecting pipe and the spray head 30, and then sprayed on the surface of the tofu stick 49 between the two clamping copper plates 12. By uniformly spraying liquid nitrogen on the surface of the tofu stick 49 during the kneading process of the tofu stick 49 between the two clamping copper plates 12, the tofu stick 49 can be quickly cooled and frozen by using liquid nitrogen, which can harden the tofu stick 49 by using low temperature. Spraying liquid nitrogen on the surface of the tofu stick 49 can quickly cool and freeze the outer skin of the tofu stick 49, so that the outer skin of the tofu stick 49 quickly hardens and becomes brittle. The straightened tofu stick 49 can be frozen and hardened, so that the straightened tofu stick 49 can be shaped. The straightened tofu stick 49 can maintain its straightness, so that the tofu stick 49 can be sliced in a straight state.

[0041] By using liquid nitrogen to quickly cool and freeze the outer skin of the tofu stick 49, the tofu stick 49 can be hardened and brittle, so that the outer skin of the tofu stick 49 can be sliced in a hardened and brittle state. The outer skin of the tofu stick 49 can maintain a hardened state during slicing, so that the outer skin of the tofu stick 49 does not deform under stress during slicing. The outer skin of the tofu stick 49 is sliced in a hardened and brittle state, so that the outer skin of the tofu stick 49 maintains a straight state before and after slicing, and the tofu stick 49 does not become loose after slicing.

[0042] And the liquid nitrogen is used for quick cooling and freezing of the bean curd stick 49, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is hard and brittle, and it can also use the principle of thermal expansion and cold shrinkage, and the outer layer of the bean curd stick skin of the bean curd stick 49 is quickly cooled and shrunk, which can make the outer layer of the bean curd stick skin of the bean curd stick 49 shrink by using the principle of thermal expansion and cold shrinkage, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is tightly wrapped on the bean curd stick 49, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is more tightly wrapped on the bean curd stick 49, which can avoid the phenomenon that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 are separated during slicing, so that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 can remain in close connection state after slicing, avoiding the phenomenon that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 are loose and separated after slicing.

[0043] And the liquid nitrogen is used for quick cooling and freezing of the bean curd stick 49, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is hard and brittle, and it can also use the principle of thermal expansion and cold shrinkage, and the outer layer of the bean curd stick skin of the bean curd stick 49 is quickly cooled and shrunk, which can make the outer layer of the bean curd stick skin of the bean curd stick 49 shrink by using the principle of thermal expansion and cold shrinkage, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is tightly wrapped on the bean curd stick 49, so that the outer layer of the bean curd stick skin of the bean curd stick 49 is more tightly wrapped on the bean curd stick 49, which can avoid the phenomenon that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 are separated during slicing, so that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 can remain in close connection state after slicing, avoiding the phenomenon that the bean curd stick 49 and the outer layer of the bean curd stick skin of the bean curd stick 49 are loose and separated after slicing.

[0044] After the bean curd stick 49 is kept in a straight state by being frozen with liquid nitrogen, the first electric sliding block 38 is started, the first electric sliding block 38 slides on the first guide rail 37, the adjusting rod 36 can be adjusted to the end of the bearing plate 33 away from the mounting disc 14, the electric telescopic rod 39 is started, the piston rod of the electric telescopic rod 39 pushes the adjusting rod 36 to move upwards, until the adjusting rod 36 moves to the side of the bean curd stick 49 and stops, at this time, the first electric sliding block 38 is started again to slide on the first guide rail 37, which can drive the adjusting rod 36 to move and push the bean curd stick 49 on the bearing plate 33, and then the bean curd stick 49 can be pushed towards the mounting disc 14, at this time, the metal cutting line 48 is in a horizontal state, and the two third electric sliding blocks 44 are started at the same time, so that the metal cutting line 48 moves upwards, the adjusting rod 36 pushes the bean curd stick 49 to move close to the mounting disc 14, until the end of the bean curd stick 49 needs to be sliced to the position below the metal cutting line 48 and stops, the first motor 15 is started again to make the two clamping copper plates 12 move close to each other, which can clamp and fix the hard and brittle bean curd stick 49 by using the two clamping copper plates 12, so that the bean curd stick 49 can be clamped and fixed between the two clamping copper plates 12, and then the hard and brittle bean curd stick 49 is fixed between the two clamping copper plates 12 and on the top of the bearing plate 33.

[0045] At this time, the metal cutting line 48 is located directly above the position of the bean curd stick 49 that needs to be sliced, and two second motors 46 are started, and the output shaft of one of the second motors 46 rotates clockwise, and the output shaft of the other second motor 46 rotates counterclockwise, so that the metal cutting line 48 is repeatedly wound on the two winding shafts 47. At this time, two third electric sliding blocks 44 are started at the same time, so that the metal cutting line 48 that repeatedly winds on the two winding shafts 47 moves downward to cut the position of the bean curd stick 49 that needs to be sliced. When the metal cutting line 48 cuts the position of the bean curd stick 49 that needs to be sliced, two second electric sliding blocks 41 are started at the same time, and the two second electric sliding blocks 41 rotate clockwise on the second guide rail 40, that is, the metal cutting line 48 is driven to move circumferentially around the bean curd stick 49, thereby circumferentially slicing the bean curd stick 49. The metal cutting line 48 moves circumferentially around the position of the bean curd stick 49 that needs to be sliced to cut the bean curd stick 49, so that the cutting depth of each angle of the bean curd stick 49 that needs to be sliced is consistent, avoiding the problem that the traditional cutting knife easily slices obliquely when slicing the bean curd stick 49 once, and improving the slicing accuracy of the bean curd stick 49.

[0046] After the bean curd stick 49 is sliced, the bean curd slices in the frozen state can be stored in the frozen state while the bean curd stick 49 is still in the frozen state, thereby maximizing the mouthfeel of the bean curd slices.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tofu skin processing and production equipment, comprising a base plate (1) and tofu sticks (49), characterized in that, The bottom plate (1) is connected to the top plate (3) by a fixing frame (2). The bottom of the top plate (3) is provided with a tofu stick hardening mechanism for strengthening the hardness of the tofu stick. The bottom of the bottom plate (1) is provided with a slicing mechanism for slicing the tofu stick. The tofu stick hardening mechanism includes a bidirectional screw rod (8) with positive and negative threads rotatably mounted on the bottom of the top plate (3). Two threaded sections of the bidirectional screw rod (8) with opposite thread directions are threaded with internal thread blocks (9). A limiting component for limiting the internal thread blocks (9) is provided at the bottom of the top plate (3). A reciprocating cylinder (11) is installed at the bottom of each of the two internal thread blocks (9). A clamping copper plate (12) is installed at the end of the piston rod of the reciprocating cylinder (11). A mounting plate is provided on the side of each clamping copper plate (12) that is far apart from the others. The mounting slot (31) has several mounting holes (29) and a nozzle (30) is installed in the mounting holes (29). The nozzles (30) are connected to a connecting pipe. A liquid nitrogen tank (4) is installed on the top plate (3). The liquid nitrogen tank (4) is connected to a second corrugated pipe (20). The second corrugated pipe (20) is connected to the connecting pipe. A liquid nitrogen pump (21) is installed in the second corrugated pipe (20). A support plate (33) is installed on the top of the bottom plate (1). The support plate (33) is located between two clamping copper plates (12).

2. The tofu skin processing equipment according to claim 1, characterized in that, An electric heating plate is installed on the inner wall of the mounting groove (31), a water tank (5) is installed on the top of the liquid nitrogen tank (4), the water tank (5) is connected to a first corrugated pipe (18), the first corrugated pipe (18) is connected to a connecting pipe, a liquid pump (19) is installed inside the first corrugated pipe (18), a first electronic valve is installed at the connection between the first corrugated pipe (18) and the connecting pipe, and a second electronic valve is installed at the connection between the second corrugated pipe (20) and the connecting pipe.

3. The tofu skin processing equipment according to claim 1, characterized in that, The inner wall of the mounting groove (31) has an opening (27), and an L-shaped plate (26) is installed in the mounting groove (31). The top of the L-shaped plate (26) has a slope, and the lower end of the slope is located on the side of the L-shaped plate (26) close to the clamping copper plate (12). The tofu stick (49) is placed on the L-shaped plate (26). The upper surface of the L-shaped plate (26) is flush with the bottom wall of the opening (27). The opening (27) is located above several nozzles (30), and an electric gate (28) is installed in the opening (27).

4. The tofu skin processing equipment according to claim 1, characterized in that, The limiting assembly includes a first fixing plate (6) and a second fixing plate (7) symmetrically installed at the bottom of the top plate (3). A bidirectional screw (8) with positive and negative threads is rotatably installed between the first fixing plate (6) and the second fixing plate (7). A slide rod (23) is installed between the first fixing plate (6) and the second fixing plate (7). Slide sleeves (22) are installed on the top of the two internal thread blocks (9). The two slide sleeves (22) are slidably sleeved on the slide rod (23).

5. The tofu skin processing equipment according to claim 4, characterized in that, The second fixing plate (7) is equipped with a first motor (15) on the side away from the bidirectional lead screw (8). The output shaft of the first motor (15) passes through the second fixing plate (7) and is connected to the bidirectional lead screw (8). The first fixing plate (6) is equipped with a bearing (16) on the side close to the bidirectional lead screw (8). The end of the bidirectional lead screw (8) is installed in the inner ring of the bearing (16).

6. The tofu skin processing equipment according to claim 1, characterized in that, The bottom of the internal threaded block (9) is fitted with a first mounting plate (10), and a reciprocating cylinder (11) is mounted on the bottom of the first mounting plate (10). A reinforcing block is mounted on the end of the piston rod of the reciprocating cylinder (11), and the reinforcing block is fixed to the top of the clamping copper plate (12).

7. The tofu skin processing equipment according to claim 1, characterized in that, The bottom plate (1) is equipped with a support plate (24) on top, a strip plate (25) is equipped with a strip plate (25) on top, a connecting plate (32) is equipped with a strip plate (25) on top, a bearing plate (33) is installed on top of the connecting plate (32), the bearing plate (33) has an arc groove on top that matches the outer wall of the tofu stick (49), the arc groove is concentric with the tofu stick (49), a sponge layer (34) is installed in the arc groove, both the bearing plate (33) and the sponge layer (34) have a strip opening (35), a first guide rail (37) is installed on top of the strip plate (25), a first electric slider (38) is slidably installed on the first guide rail (37), an electric telescopic rod (39) is installed on top of the first electric slider (38), a toggle rod (36) is installed at the end of the piston rod of the electric telescopic rod (39), and the toggle rod (36) is located in the strip opening (35).

8. The tofu skin processing equipment according to claim 7, characterized in that, The slicing mechanism includes a mounting plate (14) mounted on the top of the base plate (1). The mounting plate (14) is concentric with the arc groove. A second annular guide rail (40) is mounted on the side of the mounting plate (14) near the support plate (33). The second guide rail (40) is concentric with the arc groove. Two second electric sliders (41) are slidably mounted on the second guide rail (40). The two second electric sliders (41) are symmetrically arranged on the second guide rail (40). A mounting plate (42) is mounted on the side of the second electric slider (41) near the support plate (33). A third guide rail (43) is mounted on the side of the mounting plate (42) near the support plate (33). A third electric slider (44) is slidably mounted on the third guide rail (43). A second motor (46) is mounted on the side of the third electric slider (44) near the support plate (33). The output shaft of the second motor (46) is connected to a winding shaft (47). Metal cutting wire (48) is wound together on the two winding shafts (47).

9. The tofu skin processing equipment according to claim 8, characterized in that, A rectangular plate (13) is installed on the top of the base plate (1), and a mounting plate (14) is installed on the top of the rectangular plate (13). A second mounting plate (45) is installed on the side of the third electric slider (44) near the bearing plate (33). A second motor (46) is installed on the side of the second mounting plate (45) away from the third electric slider (44). A collection box (17) is installed on the top of the base plate (1), and the collection box (17) is located directly below the metal cutting line (48).

10. A production method for a tofu skin processing equipment as described in any one of claims 1-9, characterized in that, The production method includes the following steps: S1: Automatic feeding of tofu sticks 49; S2: Straighten the tofu sticks 49 after feeding; S3: Pre-clean the straightened tofu stick 49; S4: Dry the cleaned tofu sticks 49. S5: Quickly freeze-set the dried tofu sticks 49; S6: Slice the frozen tofu sticks 49 to complete the slicing process of the tofu sticks 49.

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