JPH0755918Y2 - Soybean boiling equipment for tofu production - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The soybean boiling apparatus for producing tofu according to the present invention is incorporated in a tofu production line, and is used to obtain soybean milk by boiling soybean which is a raw material of tofu. The purpose is to make soy milk with stable quality easily.

(Prior Art) When mass-producing tofu at a factory, conventionally, it is manufactured on a tofu production line configured as shown in FIG.

First, the conventional tofu production line will be briefly described.

The soybean, which is the raw material for tofu, extracted from the silos 1 and 1 passes through the soybean feeder 2 and the soybean separator 3 to wash the beans 4.
Sent to. The soybeans cleaned by the bean washing device 4 are alternately sent to the pickled bean tanks 6 and 6 through another soybean separator 5 and are softened in the pickled bean tanks 6 and 6, respectively.

The soybeans sufficiently softened in the pickled bean tanks 6 and 6 are sprayed while passing on the conveyor 7, and then sent to a soybean quantitative feeder 8 such as a worm feeder. A fixed amount is fed from 8 to the bean scraper 9.

For soybeans mashed with this soybean shaving machine 9, in the receiver 10,
Add the defoaming additive Kretton and water. Reference numeral 11 is a water supply tank that stores water to be supplied to the receiver 10.

In this way, soybeans to which Kletton, which is a defoaming additive, and water were added in the receiver 10 were then heated by the raw sagittal pump 12 (sagittal soybeans were crushed and water was added to the soybeans). The former is referred to, while the one after heating is referred to as simmering.) It is sent to the boiling device 13 and boiled to be simmering.

Boiled cabbage, which is a mixture of soybeans and water, is boiled in a boiling device 13 and the resulting boiled cabbage is attached to the Okara squeezing machine 15
At the same time, the fine particles of fibers are removed, and at the same time, the okara squeezing machine 15 separates the okara from the soy milk. Of the separated okara and soy milk, the okara is sent to the okara tank 17 by the okara feeder 16. In addition, since the dust removed by the dust remover 14 still contains soy milk, the boiling device 13 should be used again.
Return to.

One soybean milk is sent to the automatic stopper 19 by the soybean milk pump 18, is filled in the container 20 together with the coagulant by the automatic stopper 19 and is solidified in the container 20.

The tofu made by solidifying the soy milk in the container 20 is put in a mold box and sent to the drainer 21, and the tofu made by solidifying the soy milk is pressed for a predetermined time to remove water to some extent. (For cotton tofu. Do not drain if silk tofu).

The tofu that has been drained is cut into a predetermined size in a bleaching water tank 22 that can be packed in a commercially available pack, and then packed in a pack at the end of the bleaching water tank 22. This packing operation is conventionally performed manually.

The pack filled with tofu is covered with a lid on the upper opening by the packaging machine 23 and then passed through the metal detector 24. This pack is then cooled by dipping it in a cooling water tank 25, and then packed into a cardboard box or the like in a predetermined number to form a product.

The conventional tofu production line is configured as described above, but a soybean boiling device incorporated in such a production line.
No. 13 is conventionally constructed as shown in FIG. 2 and FIG. 3, and is designed to boil soybeans with high temperature steam.

That is, a single casing that has a lid that can be opened and closed freely
33 inside, with steam tubes 26, 26 at the bottom of each
A plurality of boiling tanks 27, 27 having upper openings, into which high temperature steam is sent through, are arranged so that they gradually become lower from the upstream side (left side in FIG. 2, right side in FIG. 3) toward the downstream side. ,
The raw material that has been preheated by the heat exchanger 28 for exchanging heat between the steam discharged from the casing 33 and the raw material and sent to the most upstream boiling tank 27 has the downstream partition wall 29 of the boiling tank 27. After getting over, it is sent to the boiling tank 27 on the downstream side,
It is made to flow down one after another toward the boiling tank 27 on the downstream side.

The raw saute is boiled while passing through a plurality of boiling tanks 27, 27 to become a saute. At the bottom of each boiling tank 27, 27, an extraction tube 31 having a gate valve 30 is provided. , Boiled soy sauce can be taken out from any of the boiling tanks 27, 27.

When removing the boiled soybeans sent from the boiling device 13 to the Okara squeezing machine 15, only the sluice valve 30 in the middle of the take-out tube 31 leading to the boiled tank 27 in which the boiled boiled to a sufficient extent for producing tofu exists is opened. Then, the boiled calyx present in the boiling tank 27 is taken out and sent to the Okara squeezing machine 15 through the feed tube 32.

Among the plurality of boiling tanks 27, 27, the operator decides whether to open the sluice valve 30 in the middle of the take-out tube 31 leading to which boiling tank 27, the worker, the boiling water present in each boiling tank 27, 27, Casing 33
This is done by visually observing with the lid open.

(Problems to be Solved by the Invention) However, the conventional soybean boiling apparatus for producing tofu, which is constructed and operates as described above, has the following disadvantages.

That is, from which of the boiling tanks 27, 27 which are scattered, the operator must determine by visually checking the inside of each of the boiling tanks 27, 27 each time the work is started every day. Also, if you do not inspect it often during manufacturing, you cannot make tofu with stable quality. For this reason, a dedicated worker is required for the boiling device part, which makes it difficult to save labor in the tofu production line and also requires skill in the work.

The soybean boiling apparatus for producing tofu according to the present invention eliminates the above-mentioned inconvenience.

(Means for Solving the Problems) In the soybean boiling apparatus for producing tofu according to the present invention, in the casing of the heat exchanger, a space is provided in parallel with each other, and the upper and lower parts are separated from each other.
It has a pair of baffle plates.

The upper and lower ends of a plurality of heat exchange tubes are respectively penetrated through the pair of baffle plates, and the upper end openings of the heat exchange tubes are connected to the inlet side jacket existing in the upper portion of the casing, respectively. The lower end openings are opened to the outlet side jackets existing in the lower part of the casing.

At the lowest part of the outlet-side jacket, one end of a raw-body circulation tube provided with a raw-body circulation pump is opened, and the other end of the raw-body circulation tube is opened to the inlet-side jacket.

One end of a drainage tube is connected to the lower end position of the sacrifice circulation tube.

Further, the other end of the hot water circulation tube having one end opened to the upper part of the hot water jacket existing between the pair of baffle plates is opened to the lower part of the hot water jacket. Is provided with a hot water circulation pump and an in-line heater that heats water by sending in steam.

Further, a steam valve is provided in the middle of the steam supply tube for sending steam to the in-line heater, and a drainage tube for discharging the increased amount of hot water to the outside is provided at the upper end of the hot water jacket for the raw circulation. In the middle of the tube, there is a temperature sensor for sacrifice that detects the temperature of the sacrifice that circulates in the sacrificial circulation tube, and in the middle of the hot water circulation tube, hot water circulating in the hot water circulation tube. A hot water temperature sensor for detecting the temperature of each is provided.

Further, based on the signals from the hot water temperature sensor and the sacrifice temperature sensor, a controller for controlling the opening and closing of the steam valve is provided, and the controller has a sacrifice temperature of a first limit temperature. If the temperature of the hot water exceeds the second limit temperature higher than the first limit temperature, even if the temperature of the sacrifice does not exceed the first limit temperature, the steam valve Is closed.

(Operation) When the soybean boiling apparatus for tofu production of the present invention configured as described above is used to boil raw cabbage to be boiled, the hot water circulation pump and the inline heater are operated to operate the hot water jacket. While circulating hot water, the sagittal circulation pump is operated to circulate saute in a plurality of heat exchange tubes provided so as to penetrate through the hot water jacket.

As a result, the raw saute and the hot water exchange heat with each other, and the raw saute is boiled to become a saute.

When boiling raw sausage as described above, the temperature of the hot water flowing in the hot water jacket and the temperature of the saute flowing in the saute circulation tube are equal to the temperature sensor for hot water or the hot water. Detected by the temperature sensor for sacrifice, the controller controls the opening and closing of the steam valve in the middle of the steam supply tube leading to the in-line heater based on the signals from both temperature sensors, and the temperature of sacrifice is the first limit temperature. Or the temperature of the sacrifice does not exceed the first limit temperature, the temperature of the hot water does not exceed the second limit temperature higher than the first limit temperature. Therefore, the temperature of the sausage becomes too high, and the quality of the sausage produced by boiling this sausage does not deteriorate.

After circulating the sauteed cabbage for a suitable time, remove the sausage from the midway of the sausage circulation tube and send it to the Okara squeezing machine.

The feeding amount of Saiko (depending on the operating speed of Saiko circulation pump), circulation time, heating temperature, etc. required to obtain the optimum Saiko for making tofu are trial and error when operating the boiling device for the first time. However, once the conditions for obtaining the optimum simmering sauce are determined, if the same conditions are set from now on, the optimum simmering sauce can be obtained as it is. There is no need to operate valves, etc. or to attach a dedicated worker to the boiling device.

When the inside of the apparatus is cleaned after the boiling work is completed, the inside of the apparatus is cleaned by feeding water into the casing and circulating this water with a sacrificial circulation pump. After the cleaning is completed, this water is discharged through a drainage tube whose one end is connected to the lower end position of the viscous circulation tube.

(Embodiment) Next, the present invention will be described in more detail with reference to the illustrated embodiment.

FIG. 1 is a diagram showing a piping state of the soybean boiling apparatus for producing tofu of the present invention.

Reference numeral 34 denotes a casing that constitutes the heat exchanger 35. Inside the casing 34, a pair of upper and lower baffle plates 36a and 36b are provided in parallel with each other with a space therebetween.

The upper and lower ends of a plurality of heat exchange tubes 37, 37 are passed through the pair of baffle plates 36a, 36b, respectively, and the upper end openings of the heat exchange tubes 37, 37 are present above the casing 34. In the inlet side jacket 38, the lower end openings of the heat exchange tubes 37, 37 are opened in the outlet side jacket 39 existing in the lower part of the casing 34.

At the lowest part of the outlet side jacket 39, one end of a sacrifice circulation tube 41 provided with a sacrifice circulation pump 40 is opened, and the other end of the sacrifice circulation tube 41 is opened to the inlet side jacket 38. I am letting you.

At the lower end position of the sacrifice circulation tube 41, an on-off valve
One end of a drainage tube 43 provided with 42 is connected. or,
A pair of open / close valves 44, 45 are provided in the middle of the sacrificial circulation tube 41 with the sacrificial circulation pump 40 interposed therebetween.

Among these, between the on-off valve 44 near the outlet side jacket 39 and the sagittal circulation pump 40, a receptacle for receiving sacrifice from the soybean paste mill 9.
The end of the samurai feed pipe 53 leading to 10 is connected. Further, between the opening / closing valve 45 near the inlet side jacket 38 and the raw sac circulation pump 40, one end of a simmering feed pipe 54 leading to the Okara throttling machine 15 is connected. On-off valves 55 and 56 are provided in the middle of the raw-material feeding tube 53 and the boiled-material feeding tube 54, respectively.

Also, in the casing 34, the pair of baffle plates 36
One end of a hot water circulation tube 47 is opened at the top of the hot water jacket 46 existing between a and 36b, and the other end of this hot water circulation tube 47 is opened at the bottom of the hot water jacket 46. I am letting you. A hot water circulation pump 48 and an in-line heater 49 that heats the water by sending in steam are provided in the middle of the hot water circulation tube 47 to heat the hot water heated by the steam into the hot water jacket 46. It can be freely circulated inside. In the hot water jacket 46, by disposing a plurality of baffles 50, 50, the flow path of the hot water is bent,
In combination with the uneven shape formed on the inner and outer surfaces of the heat exchange tubes 37, 37, the heat exchange between the hot water flowing in the hot water jacket 46 and the raw water flowing in the heat exchange tubes 37, 37 is efficient. I try to be well done.

Further, a steam valve 52 which is electrically opened and closed is provided in the middle of the steam supply tube 51 for sending steam to the in-line heater 49, and the sending of heating steam to the in-line heater 49 can be stopped freely.

When the hot water circulating in the hot water jacket 46 is heated by sending the steam to the in-line heater 49, the amount of the hot water increases by the amount of condensation of the steam. Drainage tube 57 provided at the upper end of
It can be discharged to the outside freely. That is, in the middle of the drainage tube 57 whose one end is connected to the hot water jacket 46,
A pressure gauge 58 for measuring the pressure in the hot water jacket 46,
When the pressure in the hot water jacket 46 exceeds a certain value, a safety valve 59 for releasing this pressure to the outside is provided, and the increment of hot water accompanying the sending of the steam for heating is: It is discharged to the outside through a safety valve 59 provided on the drainage tube 57.

On the other hand, in the middle of the sacrifice circulation tube 41, a temperature sensor 60 for sacrifice that detects the temperature of the sacrifice circulating in the sacrifice circulation tube 41, and in the middle of the hot water circulation tube 47,
A hot water temperature sensor 61 for detecting the temperature of hot water circulating in the hot water circulation tube 47 is provided.

Furthermore, the temperature sensor 60 for sacrifice and the temperature sensor for hot water
A signal indicating the temperature of raw water or hot water detected by 61 is input to a controller 62, and the controller 62, based on the signals from the temperature sensors 60, 61, supplies the steam supply tube 51. The opening and closing of the steam valve 52 in the middle of is controlled.

That is, the controller 62 controls the temperature of the sausage circulating in the sausage circulation tube 41 to exceed the first limit temperature (for example, 91 to 92 ° C.) and the temperature of the sacrifice to the first limit temperature. Even if it does not exceed the above, if the temperature of the hot water circulating in the hot water circulation tube 47 exceeds a second limit temperature (for example, 107 to 108 ° C.) higher than the first limit temperature, the steam valve I'm trying to close 52.

With the soybean boiling apparatus for tofu production of the present invention configured as described above, when boiled saiko to be boiled, first of the on-off valves 44, 45 provided in the middle of the sauro circulation tube 41, Open the on-off valve 45 near the inlet jacket 38 and open the outlet jacket
With the open / close valve 44 near 39 closed and the open / close valve 55 in the middle of the raw sacrifice feed pipe 53 opened, the raw sagittal circulation pump 40 is operated to suck the raw saute from the receiver 10 of the soybean mill 9 to heat it. It is fed into the casing 34 of the exchanger 35. At this time, the on-off valve 56 in the middle of the boiled-out feed pipe 54 is closed.

If a predetermined amount of sacrifice has been fed into the casing 34,
Open the on-off valves 44 and 45 provided in the middle of the raw sacrificial circulation tube 41, and close the open / close valve 55 in the middle of the raw sagittal feeding tube 53 and the open / close valve 56 in the middle of the boiled raw material feeding tube 54, and perform raw production as it is. While continuing the operation of the sagittal circulation pump 40, the sautegi is circulated in the plurality of heat exchange tubes 37, 37 provided so as to penetrate through the hot water jacket 46, and the hot water circulation pump 48 and the in-line heater 49 are provided. By driving with the above hot water jacket 46
Circulate hot water in the.

As a result, the sautegi that flows inside the heat exchange tubes 37, 37 and the hot water that flows outside the heat exchange tubes 37, 37 exchange heat with each other, and the sausage is boiled to be cooked.

When boiling raw sausage in this manner, the temperature of the hot water flowing through the hot water jacket 46 and the temperature and temperature of the hot water flowing through the sauro circulation tube 41 are the hot water temperature sensors. 61
Alternatively, the controller 62 controls the opening and closing of the steam valve 52 in the middle of the steam supply tube 51 leading to the in-line heater 49, based on the signals from the temperature sensors 60 and 61 detected by the temperature sensor 60 for regeneration. The temperature of the samurai exceeds the first limit temperature,
Or even if the sausage temperature does not exceed the first limit temperature,
The temperature of the hot water should not exceed a second limit temperature that is higher than the first limit temperature. Therefore, the temperature of the sausage becomes too high (the heating amount becomes too large) and the quality of the sausage produced by boiling the sausage does not deteriorate.

When boiling of the saute is completed by circulating the saute for an appropriate time, the saute is taken out from the middle of the saute circulation tube 41 and sent to the Okara squeezing machine 15. In addition, at the end of the boiling process,
The boiling operation is continued while the steam valve 52 is closed, and unevenness due to residual heat is appropriately added.

The simmering is taken out by closing the on-off valve 45 near the inlet side jacket 38 and opening the on-off valve 56 in the middle of the sacrum delivery pipe 54 while continuing the operation of the sausage circulation pump 40. As a result, the simmering material taken out from the casing 34 is sent to the okara squeezing machine 15. Completion of the feeding of the boiled gauze is detected by the liquid level sensor 63 provided in the outlet side jacket 39, and after the feeding is completed, the sagittal circulation pump 40 is stopped.

Feeding amount of sausage (depending on the operating speed of sausage circulation pump 40), circulation time required to obtain the optimum simmering sauce for making tofu,
The heating temperature and the like are determined by trial and error when the boiling device is first operated, but once the conditions for obtaining the optimum boiling are determined, the same conditions will be set from then on, and the controller 62 will In order to maintain the conditions, the opening and closing of the steam valve 52 is controlled, and the operation of boiling completion is performed by the timer, so every time the operation of the tofu manufacturing device is started, the valve etc. are operated or the boiling device is dedicated. It is possible to obtain a good quality nikko without having to attach a worker or perform a particularly troublesome work.

When the inside of the apparatus is washed after completion of the boiling operation, water is fed into the casing 34 through the receiver 10 and the sacrifice feeding pipe 53, and the water is circulated by the sagittal circulation pump 40. As a result, the inner surface of the casing 34, the sagittal circulation tube
The inside of the device, such as the inner surface of 41, is cleaned. After the cleaning is completed, this water is discharged through the drainage tube 43 whose one end is connected to the lower end position of the living-body circulation tube 41. Since the drainage tube 43 is provided at the lower end position of the sacrifice circulation tube 41, the wash water can be easily and surely discharged only by opening the opening / closing valve 42 provided in the middle of the drainage tube 43.

(Effect of the device) The soybean boiling apparatus for manufacturing tofu according to the present invention is configured and operates as described above, so that it is possible to obtain a stable quality soy sauce without manpower and labor saving of the tofu manufacturing line. Can be realized.

In addition, since soybeans (sauce) are heated by steam in a closed heat exchanger, heating efficiency is good, heat quantity required for boiling can be suppressed, and running cost of the tofu production line can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a piping state of a soybean boiling apparatus for producing tofu of the present invention, FIG. 2 is a schematic view showing a conventional tofu production line, and FIG. 3 is a partial vertical side view of a conventional tofu boiling apparatus. . 1: Silo, 2: Soybean feeder, 3: Soybean separator, 4: Soybean washing device, 5: Soybean separator, 6: Pickled bean tank, 7: Conveyor, 8: Soybean quantitative feeder, 9: Soybean scraper, 10: Receptor, 11: Water tank, 1
2: Samurai pump, 13: Boiling device, 14: Dust collector, 15: Okara extractor, 16: Okara feeder, 17: Okara tank, 18:
Soy milk pump, 19: Automatic loading machine, 20: Container, 21: Drainer, 22:
Exposed water tank, 23: Packing machine, 24: Metal detector, 25: Cooling water tank, 26: Steam tube, 27: Boiling tank, 28: Heat exchanger, 29: Partition wall, 30: Gate valve, 31: Extraction tube, 32: feed tube, 33, 34: casing, 35: heat exchanger, 36a, 36b: baffle plate, 37: heat exchange tube, 38: inlet jacket, 3
9: outlet side jacket, 40: sacrifice circulation pump, 41: sacrifice circulation tube, 42: open / close valve, 43: drainage tube, 44, 45: open / close valve, 46: hot water jacket, 47: hot water circulation Return tube, 48: Hot water circulation pump, 49: In-line heater, 50: Baffle plate, 51:
Steam supply tube, 52: Steam valve, 53: Sourcing feed pipe, 54: Boiled feeding pipe, 55, 56: Open / close valve, 57: Drainage tube, 58:
Pressure gauge, 59: Safety valve, 60: Temperature sensor for sacrifice, 61: Temperature sensor for hot water, 62: Controller, 63: Liquid level sensor.

Claims (1)

[Scope of utility model registration request] 1. A pair of upper and lower baffle plates, which are provided in parallel with each other at a distance, in a casing of a heat exchanger, and upper and lower end portions of the pair of baffle plates penetrate the pair of baffle plates, respectively.
A plurality of heat exchange tubes, each of which has an upper end opening in an inlet side jacket existing in the upper part of the casing, and a lower end opening in an outlet side jacket existing in the lower part of the casing, and one end of which is the outlet side. At the lowest part of the side jacket, the other end is opened at the inlet jacket, the sacrificial circulation tube, the sacrifice circulation pump provided in the middle of the sacrifice circulation tube, and the lower end of the sacrifice circulation tube. A drainage tube with one end connected to the position, a hot water circulation tube having one end at the top of the hot water jacket existing between the pair of baffle plates, and the other end at the bottom of the hot water jacket, and A hot water circulation pump provided in the middle of the hot water circulation tube, and an inline heater provided in the middle of the hot water circulation tube to heat water by sending in steam. And-heater, and a steam valve provided in the middle of the steam supply tube for feeding the steam to the line heater is provided in the upper portion of the hot water jackets,
A drainage tube for discharging the increased amount of hot water to the outside, and a temperature sensor for sacrifice which is provided in the middle of the sacrifice circulation tube and detects the temperature of the sacrifice circulating in the sacrifice circulation tube, From the hot water temperature sensor, which is provided in the middle of the hot water circulation tube and detects the temperature of the hot water circulating in the hot water circulation tube, and the hot water temperature sensor and the sacrificial temperature sensor, And a controller for controlling the opening and closing of the steam valve based on the signal of, when the temperature of the sacrifice exceeds the first limit temperature, and when the temperature of the sacrifice is the first limit temperature. If the temperature of the hot water exceeds the second limit temperature, which is higher than the first limit temperature,
A soybean boiling apparatus for producing tofu having a function of closing the steam valve.