CN111838325A

CN111838325A - Production process of additive-free dried beancurd sticks and automatic pulping machine thereof

Info

Publication number: CN111838325A
Application number: CN202010774349.6A
Authority: CN
Inventors: 陈红玉; 郭达伟; 江巍; 李金福; 邓雄远; 何胜生; 修秋香
Original assignee: Longyan Tianyuan Food Co Ltd
Current assignee: Longyan Tianyuan Food Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-10-30
Anticipated expiration: 2040-08-04
Also published as: CN111838325B

Abstract

The invention discloses a production process of non-additive dried beancurd sticks, which comprises the steps of cleaning → soaking → jordaning → boiling → peeling → cooking → starching → drying, wherein the starching process is carried out by an automatic starching machine; the automatic slurry brushing machine comprises a spraying portion, a slurry brushing portion and a conveying track, wherein the spraying portion is provided with an incoming material pipe butt joint external skinning pool, the incoming material pipe is connected with the spraying portion, the spraying portion comprises a conical hopper, a plurality of material leaking holes are formed in the bottom of the conical hopper, a material leaking gate is arranged on the bottom of the conical hopper, the slurry brushing portion is arranged below the spraying portion, the automatic slurry brushing machine comprises a movable brush head and a lifting mechanism, and the brush head is composed of two rows of bristles which are arranged relatively. According to the invention, the concentrated bottom pulp is brushed on the semi-finished bean curd sticks by the automatic pulping machine, so that the utilization of raw materials is maximized, and the bean fragrance and nutrition of the bean curd sticks are increased. Automatic brush thick liquid machine double-layer tube send thick liquids automatically, and the thick liquid falls to the dried bean, and the automatic brush thick liquid of reuse double-end brush is than traditional artifical starching, and is more comprehensive even, and has improved work efficiency greatly.

Description

Production process of additive-free dried beancurd sticks and automatic pulping machine thereof

Technical Field

The invention relates to the field of food processing, in particular to a production process of additive-free dried beancurd sticks and an automatic pulping machine thereof.

Background

The bean curd stick is a popular traditional food, and is made up by boiling soybean milk, holding for a while to form a layer of film on the surface, picking out, making it droop into branch-like shape, and drying.

The bean curd stick production process generally comprises the steps of cleaning, soaking, grinding, filtering, boiling, peeling and drying, the soybean milk is limited in skinning times, the skinning is generally incapable of being formed about ten times, the residual soybean milk is generally directly poured or used as animal feed, bean dregs filtered in the filtering step are also used as feed to be treated, raw material waste is caused, and the nutrition of the prepared bean curd stick is incomplete.

Disclosure of Invention

The invention aims to provide a production process of non-additive dried beancurd sticks and an automatic pulping machine thereof, which are used for completely utilizing soybean milk in the production of the dried beancurd sticks, increasing the bean fragrance and nutrition of the dried beancurd sticks and realizing automatic pulping.

The technical problem solved by the invention can be realized by adopting the following technical scheme:

a production process of non-additive dried beancurd sticks is characterized by comprising the following steps: comprises cleaning → soaking → grinding → boiling → peeling → boiling → starching → sizing → drying; and the peeling step is that the boiled soybean milk is sent into a peeling pool to be peeled and peeled to be made into a semi-finished product of the dried beancurd stick, the temperature of the peeling pool is controlled between 70 ℃ and 80 ℃, after the serous fluid in the peeling pool can not be peeled, the serous fluid in the peeling pool is boiled and concentrated, the thick liquid boiling is stopped until the serous fluid concentration is 30% -40%, the concentrated serous fluid is brushed on the semi-finished product of the dried beancurd stick peeled in the peeling step and then sent into a baking room to be dried, and the non-additive dried beancurd stick is made.

Preferably, the soaking process is carried out by adding sodium carbonate in a proportion of 0.2-0.3% of soybean.

Preferably, the large soybean pulping system of the high-power triple pulping machine adopted in the pulping process consists of three parts, namely soybean suction, pulping and control.

Preferably, the skinning pool is used for boiling the pulp by steam, and an automatic temperature control system is arranged for controlling the skinning and pulp boiling temperatures.

Preferably, the drying is carried out by adopting automatic air energy high-temperature heat pump energy-saving drying equipment for sulfur-free stepped constant-temperature drying, and the drying method mainly comprises the following steps: first step-bulk moisture removal: putting the dried beancurd sticks into a baking room to be dried for 4 hours at 65 ℃; the second step, constant temperature and humidity drying: the temperature in the drying room is adjusted to 60 ℃, the relative humidity is controlled to be below 50 percent, and the drying time is 6 hours; third step-control of humidity: and (3) reducing the temperature in the drying room again, controlling the temperature to be 58 ℃, keeping the humidity at the room temperature, controlling the drying time to be 6-8 hours, reducing the humidity of the drying room to be below 15%, and controlling the humidity of the dried beancurd sticks to be 10-13%.

Preferably, the sizing process is performed by an automatic brushing machine.

An automatic paste brushing machine for non-additive dried beancurd sticks comprises a spraying part, a paste brushing part and a conveying rail, wherein the spraying part and the paste brushing part are arranged above the conveying rail, and beancurd skin drying rods are hung on the conveying rail; the spraying part is provided with a feeding pipe which is butted with an external skinning pool, the feeding pipe is a double-layer half pipe and is provided with an inner pipe and an outer pipe, an impeller is arranged above the inner pipe, and the impeller is connected with an impeller motor; the feeding pipe is connected with the spraying part, the spraying part comprises a conical leakage hopper, a plurality of leakage holes are formed in the bottom of the conical leakage hopper, a leakage gate is arranged on each leakage hole, and the leakage gate is controlled to be opened and closed by gate oil cylinders arranged at two ends; the conical hopper is fixed on the ground through a support;

a slurry brushing part is arranged below the spraying part, the slurry brushing part comprises a movable brush head and a lifting mechanism, the brush head consists of two rows of oppositely arranged bristles and is arranged on a group of two-clamping-jaw oil cylinders, and the lifting mechanism is arranged on the brackets at two sides of the conical hopper; the clamping jaw oil cylinder is installed on the lifting mechanism.

Preferably, a quick air drying area is arranged in front of the spraying part, a plurality of flat nozzle air ports are arranged above the conveying track, and the flat nozzle air ports are connected with an external fan through an air supply pipeline.

Preferably, the impeller is sleeved with a detachable blocking plate.

Preferably, a receiving hopper is arranged below the spraying part and the slurry brushing part.

According to the invention, the concentrated bottom pulp is brushed on the semi-finished bean curd sticks by the automatic pulping machine, so that the utilization of raw materials is maximized, and the bean fragrance and nutrition of the bean curd sticks are increased. Automatic brush thick liquid machine double-layer tube send thick liquids automatically, and the thick liquid falls to the dried bean, and the automatic brush thick liquid of reuse double-end brush is than traditional artifical starching, and is more comprehensive even, and has improved work efficiency greatly.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic structural view of an automatic brushing machine.

Fig. 3 is a schematic structural view of the shower portion and the brushing portion.

Fig. 4 is a partial schematic view in a top view of the shower portion.

Fig. 5 is a schematic view of the structure of the rapid air-dry zone.

In the figure, a bark pool is 1, an airing rod is 2, an automatic brushing machine is 3, a conveying track is 4, a scraping plate is 11, a spraying part is 31, a pulp brushing part is 32, a quick air drying area is 33, a feeding pipe is 34, a receiving hopper is 35, an inner pipe is 341, an outer pipe is 342, an impeller is 343, an impeller motor is 344, a blocking plate is 345, a conical leakage hopper is 311, a leakage hole is 312, a leakage gate is 313, a gate oil cylinder is 314, a bracket is 315, a brush head 321, a lifting mechanism is 322, a clamping jaw oil cylinder is 323, a flat nozzle air opening is 331, and an air.

Detailed Description

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

The invention relates to a production process of non-additive dried beancurd sticks, which comprises cleaning → soaking → grinding → boiling → peeling → sizing → drying.

The cleaning and soaking are the same as the prior art, and the beans (such as soybeans, black beans and the like) which are not mildewed and have good quality are selected for cleaning and then soaked for about 7.5 hours at the normal temperature of 25 ℃. During the soaking process, a proper amount of sodium carbonate (NaCO3) can be added according to the proportion of 0.2-0.3% of the soybean, so that the solubility of the protein can be improved, and the pulp yield can be improved.

The soaked beans are pumped into a pulping machine through a vacuum pump to be ground into pulp, the grinding process of the invention adopts a large-scale soybean pulping system of a high-power multi-connected pulping machine, two or three pulping processes can be arranged, the soybean pulping system comprises three parts of bean suction, pulping and control, and the beans are pumped into a material box through a vacuum bean suction pump, so that the manual bean feeding is saved. The labor force is reduced, the work efficiency is improved, the bean dregs are automatically lifted into the next pulping machine through the dreg loading machine, the beans are subjected to multiple times of superfine pulping through the high-speed pulping machine, the conical bottom pulp barrels are arranged below the pulping machines and used for receiving the ground pulp, the pulp ground by the first pulping machine is subjected to secondary pulping from the first conical bottom pulp barrel to the second pulping machine through the vacuum pump, falls into the second conical bottom pulp barrel, is analogized by the above method, and then the pulp in the last second conical bottom pulp barrel is pumped into the pulp boiling pool to boil the pulp. The lower part of the conical bottom slurry barrel is provided with an openable sealing bottom cover, and only the bottom cover needs to be taken down to be washed during cleaning, so that the maximum utilization of raw materials can be ensured, and the waste is avoided.

After superfine grinding for many times, the beans are completely ground without redundant bean dregs and can be directly boiled without filtering. The boiling adopts steam, and a steam pipe is laid in the boiling tank, so that burning can be avoided. An automatic temperature control system is arranged in the boiling pool, after the soybean milk is boiled to be above 100 ℃, the steam conveying is automatically stopped, a feeding pump is started, and the boiled soybean milk is fed into the skinning pool 1 to carry out the skinning procedure. The crust pool 1 is of a multilayer structure, the upper layer is a soybean milk placing pool, the middle layer is water, the lower layer is a heating layer, the heating layer heats the middle layer, and the steam heats the soybean milk placing pool on the upper layer. The soybean milk placing tank is divided into a plurality of skinning areas by partition plates, so that skinning is convenient, the skinning tank 1 is provided with an automatic temperature control device, and the temperature in the soybean milk placing tank is kept between 70 and 80 ℃, so that rapid skinning can be realized.

The beancurd sheets are manually lifted, natural folds are folded and hung on the drying rods 2 after each lifted beancurd sheet is lifted, semi-finished beancurd sticks are manufactured, a plurality of concave surfaces (not shown in the figure) are arranged on the drying rods 2, the beancurd sheets are hung at the concave surfaces, and edible oil is pre-brushed on the concave surfaces to prevent the beancurd sheets from being adhered. After the soybean milk in the soybean milk placing tank is peeled for many times until the soybean milk cannot be peeled, the partition plate is taken down, the heating layer is used for boiling and concentrating the soybean milk in the soybean milk placing tank until the concentration of the soybean milk is 30-40%, the temperature for concentrating and boiling the soybean milk is controlled to be more than 118 ℃, so that the Maillard reaction can be generated during boiling the soybean milk, and the fragrance of the soybean milk is stronger.

The concentrated thick pulp is sent to an automatic pulp brushing machine 3 through a pipeline, a plurality of sizing processes are carried out on the semi-finished product of the dried beancurd sticks in the automatic pulp brushing machine 3, and then the semi-finished product of the dried beancurd sticks is sent to a baking room for drying. After being hung with the skin of beancurd, the drying rods 2 are transferred to the conveying track 4, the conveying track 4 is used for conveying the soybean curd into the automatic brushing machine 3 for starching, the two ends of each drying rod 2 are clamped on the conveying track 4 to prevent dropping, and the drying rods 2 are placed at equal intervals. The step of sizing is to brush concentrated slurry on the outer surface of the semi-finished product of the dried beancurd stick, so that the prepared dried beancurd stick has more aromatic bean flavor, and the bean dreg slurry is completely utilized and has more comprehensive nutrition.

The drying adopts automatic air energy high-temperature heat pump energy-saving drying equipment to carry out sulfur-free stepped constant-temperature drying, and the method mainly comprises the following steps: first step-bulk moisture removal: the dried beancurd sticks are placed into a baking room for drying, the temperature is set to 65 ℃, a large amount of moisture needs to be discharged at this time, the moisture can not stay in the baking room for too long, and after 4 hours, the inside of the dried beancurd sticks is kept at a certain drying degree. The second step, constant temperature and humidity drying: the temperature in the drying room is adjusted to 60 ℃, the relative humidity is controlled to be below 50%, and the drying time is 6 hours, so that certain brightness of the surfaces of the dried beancurd sticks is ensured. Third step-control of humidity: and (3) reducing the temperature in the drying room again, controlling the temperature to be 58 ℃, keeping the humidity at the same time, controlling the drying time to be about 6-8 hours, waiting for the humidity of the drying room to be reduced to below 15%, and generally controlling the humidity of the dried beancurd sticks to be about 10-13%. Air can energy high temperature heat pump energy-saving drying equipment, whole automation degree is high, can realize accurate accuse temperature accuse wet, can be under the unattended condition strictly accomplish the stoving overall process of dried bean curd stick according to technological requirement, and the dried bean curd stick is no matter from the color and luster, surface oil brightness to and the toughness of dried bean curd stick can both reach a higher level, make the dried bean curd stick sell looks good, the loss is little, the stoving cost is low.

Fig. 1 to 5 show a preferred embodiment of the present invention, and the automatic brushing machine 3 for sizing of the present invention comprises a spraying part 31, a brushing part 32 and a quick air-drying region 33, wherein the spraying part 31 is provided with a feeding pipe 34 which is butted with the leather pool 1, and one end of the feeding pipe 34 is arranged below one corner of the bottom of the soybean milk placing pool and is provided with a valve (not shown in the figure). The soybean milk is placed and is equipped with an automatic scraper blade 11 in the pond, and scraper blade 11 both ends are connected with the lead screw sideslip device, connect external control system, and when thick liquid consistency reached the requirement, the zone of heating stopped heating, scraper blade 11 slowly scraped thick liquid in the pond to the soybean milk place the pond and is equipped with the one side that comes material pipe 34, can set up an inclined groove (not shown in the figure) in this side reason, lets scrape the thick liquid of here and flow into in coming material pipe 34 by the dead weight. The incoming pipe 34 is a double-layer half pipe, the inner pipe 341 conveys concentrated slurry, the outer pipe 342 is a condensed water pipeline, the slurry is rapidly cooled in the conveying process, and the phenomenon that the slurry cannot form a film and is easy to fall off due to overhigh temperature in the process of sizing is avoided. Because the thick liquid, mobility is poor, is equipped with impeller 343 above inner tube 341, and impeller 343 parallel inner tube 341 sets up, is driven by impeller motor 344 and rotates, and the direction of rotation is unanimous with the pay-off direction, and the blade is the silica gel material, pushes the thick liquid to automatic brushing machine 3 during the rotation, and in order to prevent that the thick liquid from splashing, impeller 343 low-speed rotation is equipped with detachable barrier plate 345 in impeller 343 overcoat simultaneously, and impeller 343 can set up a plurality ofly according to the pipe length.

The other end of the feeding pipe 34 is connected with the spraying part 31, the spraying part 31 comprises a conical hopper 311, a plurality of material leaking holes 312 are formed in the bottom of the conical hopper 311, and the material leaking holes 312 correspond to the concave surfaces 21 of the airing rods 2 one by one. The material leaking hole 312 is provided with a material leaking gate 313, the material leaking gate 313 is controlled to be opened and closed by gate oil cylinders 314 arranged at two ends, and the gate oil cylinders 314 are connected with an external control system. The conveying track 4 conveys the drying rods 2 hung with the bean curd sheets to the lower part of the conical leakage hopper 311, the gate oil cylinder 314 is started, the leakage gate 313 is opened, and slurry in the conical leakage hopper 311 falls onto the semi-finished dried beancurd sticks of the drying rods 2 through the leakage holes 312. The cone shaped hopper 311 is fixed to the ground by a bracket 315.

The lower side of the spraying part 31 is provided with a slurry brushing part 32, the slurry brushing part 32 comprises a movable brush head 321 and a lifting mechanism 322, the brush head 321 is composed of two rows of oppositely arranged bristles, the bristles are made of soft silica gel, the brush head 321 is arranged on a group of two clamping jaw oil cylinders 323, and the opening and closing of the two clamping jaw oil cylinders 323 are controlled by the clamping jaw oil cylinders 323. The lifting mechanism 322 is a screw rod slider mechanism, and can also be a common lifting device such as a lifting oil cylinder or a gear rack, and the lifting mechanism 322 is arranged on the brackets 315 at two sides of the conical hopper 311. The gripper cylinder 323 is mounted on a slider of the elevating mechanism 322, and the elevating mechanism 322 is provided in an upward and downward movement form so as to avoid the conveying rail 4. In an initial state, the clamping jaw oil cylinder 323 drives the brush head 321 to open, the piston rod of the lifting mechanism 322 retracts, slurry in the conical hopper 311 falls on a semi-finished dried bean curd stick product of the airing rod 2 through the material leakage hole 312, the material leakage gate 313 is closed, the clamping jaw oil cylinder 323 drives the brush head 321 to fold, the sliding block of the lifting mechanism 322 moves downwards, and the brush head 321 brushes the slurry falling on the semi-finished dried bean curd stick product downwards so that the slurry can be uniformly adhered to the dried bean curd sticks. A receiving hopper 35 is arranged below the automatic brushing machine 3 to receive the dropped slurry.

The spraying part 31 is provided with a quick air drying area 33 in front (along the conveying direction), a plurality of flat nozzle air ports 331 are arranged above the conveying track 4, an external fan is connected through an air supply pipeline 332, the dried beancurd sticks subjected to sizing are subjected to surface air drying, the adhesion of the slurry is ensured, and the dried slurry cannot fall off in the later period.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. A production process of non-additive dried beancurd sticks is characterized by comprising the following steps: comprises cleaning → soaking → grinding → boiling → peeling → boiling → starching → sizing → drying; and the peeling step is that the boiled soybean milk is sent into a peeling pool to be peeled and peeled to be made into a semi-finished product of the dried beancurd stick, the temperature of the peeling pool is controlled between 70 ℃ and 80 ℃, after the serous fluid in the peeling pool can not be peeled, the serous fluid in the peeling pool is boiled and concentrated, the thick liquid boiling is stopped until the serous fluid concentration is 30% -40%, the concentrated serous fluid is brushed on the semi-finished product of the dried beancurd stick peeled in the peeling step and then sent into a baking room to be dried, and the non-additive dried beancurd stick is made.

2. The production process of the additive-free dried beancurd sticks as claimed in claim 1, wherein the production process comprises the following steps: in the soaking process, sodium carbonate is added according to the proportion of 0.2-0.3% of the soybeans.

3. The production process of the additive-free dried beancurd sticks as claimed in claim 1, wherein the production process comprises the following steps: the pulping process adopts a large soybean pulping system of a high-power triple pulping machine, and consists of three parts, namely bean suction, pulping and control.

4. The production process of the additive-free dried beancurd sticks as claimed in claim 1, wherein the production process comprises the following steps: the crust pool adopts steam to boil the pulp, and is provided with an automatic temperature control system to control the crust and pulp boiling temperature.

5. The production process of the additive-free dried beancurd sticks as claimed in claim 1, wherein the production process comprises the following steps: the drying adopts automatic air energy high-temperature heat pump energy-saving drying equipment to carry out sulfur-free stepped constant-temperature drying, and mainly comprises the following steps: first step-bulk moisture removal: putting the dried beancurd sticks into a baking room to be dried for 4 hours at 65 ℃; the second step, constant temperature and humidity drying: the temperature in the drying room is adjusted to 60 ℃, the relative humidity is controlled to be below 50 percent, and the drying time is 6 hours; third step-control of humidity: and (3) reducing the temperature in the drying room again, controlling the temperature to be 58 ℃, keeping the humidity at the room temperature, controlling the drying time to be 6-8 hours, reducing the humidity of the drying room to be below 15%, and controlling the humidity of the dried beancurd sticks to be 10-13%.

6. The production process of the additive-free dried beancurd sticks as claimed in claim 1, wherein the production process comprises the following steps: and the sizing process is carried out by an automatic pulp brushing machine.

7. The automatic paste brushing machine for the non-additive dried beancurd sticks as claimed in claim 6, characterized in that: the bean curd skin drying machine comprises a spraying part, a paste brushing part and a conveying track, wherein the spraying part and the paste brushing part are arranged above the conveying track, and bean curd skin drying rods are hung on the conveying track; the spraying part is provided with a feeding pipe which is butted with an external skinning pool, the feeding pipe is a double-layer half pipe and is provided with an inner pipe and an outer pipe, an impeller is arranged above the inner pipe, and the impeller is connected with an impeller motor; the feeding pipe is connected with the spraying part, the spraying part comprises a conical leakage hopper, a plurality of leakage holes are formed in the bottom of the conical leakage hopper, a leakage gate is arranged on each leakage hole, and the leakage gate is controlled to be opened and closed by gate oil cylinders arranged at two ends; the conical hopper is fixed on the ground through a support;

8. The automatic paste brushing machine for dried beancurd sticks without additives according to claim 7, characterized in that: the air-drying device is characterized in that a quick air-drying area is arranged in front of the spraying portion, a plurality of flat nozzle air ports are arranged above the conveying track, and the flat nozzle air ports are connected with an external fan through an air supply pipeline.

9. The automatic paste brushing machine for dried beancurd sticks without additives according to claim 7, characterized in that: the impeller overcoat is equipped with and dismantles the barrier plate.

10. The automatic paste brushing machine for dried beancurd sticks without additives according to claim 7, characterized in that: and a receiving hopper is arranged below the spraying part and the slurry brushing part.