JPH044001A - Thin film evaporative concentrator - Google Patents

Abstract

PURPOSE:To smooth the passage of a material to be treated between a blade and a cylinder and to surely powder the end product by pivoting the blade free to swing on a bracket fixed to a driving shaft. CONSTITUTION:Many blades 11' are provided on the periphery of a driving shaft 9 borne concentrically with a cylinder 3 surrounded by a jacket 2. The blade 11' is pivoted free to swing on a bracket 10' fixed to the shaft 9. As a result, the fundamental advantages of this thin film evaporative concentrator are fully exhibited, the passage of a material to be treated between the blade and cylinder is smoothed, and the end product is surely powdered. Furthermore, the concentrator is not worn or vibrated.

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology is used to obtain products such as foods, medicines, and chemical products by supplying a highly viscous raw material liquid from one side and evaporating volatile components by heat exchange action. It belongs to the technical field of the structure of an apparatus that can be highly concentrated by stirring and mixing with a blade, and can be pulverized and discharged as a product.

<Summary of the gist> The invention of this application is a process in which a highly viscous raw material liquid is supplied from one end, concentrated, and discharged as a powder product, in which the supplied raw material liquid is formed into a thin film and subjected to a heating reaction. In addition, it is a thin film evaporation concentration device that provides a mixing and stirring action and can be converted into a product through a concentration process through evaporation into a powder.It is equipped with a jacket for heat exchange on the outside, and is capable of processing highly viscous raw material liquids. A drive shaft is mounted in a cylindrical cylinder having a supply port on one side and a powder product discharge port on the other side, and a predetermined number of blades are provided on the outer peripheral surface of the drive shaft. The invention relates to a thin film evaporation concentrator, and in particular, each blade is pivotably mounted on a bracket fixed to a drive shaft, and
The bracket has a stepped blade swing angle adjustment.
Alternatively, the present invention relates to a thin film type evaporation concentration device that is provided in a stepless manner.

<Prior art> As is well known, as people's lives improve, various products are handled in large quantities and in small quantities.Therefore, a stable supply of these products is desired, and high quality precision is also strongly desired. It is becoming more and more common.

Many of these products include primary products such as agricultural products and marine products, but a variety of secondary processed products such as foods, medicines, and cosmetics are also distributed.

Among these secondary processed products, there are many products such as candies, creams, and medicines, and some of these products include jelly-like products, as well as fruits.

Vegetable puree, sauce, soup, etc. are available in liquid form, as well as cream form, and recently powder form.

There are also granular resin products, chemical products, and chemicals, and the manufacturing process for these products with special properties should preferably have fewer man-hours and simple handling from the viewpoint of cost and product accuracy. It is rare.

To deal with this, a reaction device that performs a thermal reaction through physicochemical heat exchange has been developed and put into practical use. The thin film type evaporation concentrator 1 to be obtained includes a cylindrical cylinder 3 having a heat exchange jacket 2 on the outside, bearings 5 at both ends, and a drive shaft 8 connected to a motor 7 via a mechanical seal 6. 9 is integrally provided, and a predetermined number of blades 11, 11... are fixedly provided on the shaft 9 in the radial direction so as to rotate around the inner peripheral surface of the cylinder 3 through a minute clearance. A predetermined high-viscosity raw material liquid 13 is supplied through the supply port 12 on one side of the cylinder 3, mixed and stirred by the blades 11, 11, etc., and a thin film is formed between it and the inner peripheral surface of the cylinder 3 through the centrifugal force. A high-temperature heat medium 15 is supplied to the jacket 2 from the supply port 14 to perform a physicochemical heat exchange to cause a thermal reaction as quickly as possible and to concentrate it to a higher viscosity. The product 18 is then taken out from an outlet IY provided on the other side of the cylinder 3.

<Problems to be Solved by the Invention> However, in the conventional thin film evaporation concentrator described above, each blade is fixed to the drive shaft, so the clearance between the cylinder and the tip of the blade is insufficient for structural precision. Because it cannot be made into microscopic particles, it has not been possible to convert the viscous liquid into a microscopic thin film, and it has been impossible to highly concentrate it to powder. Furthermore, in the process in which the supplied highly viscous raw material liquid flows through the cylinder, it is concentrated by heating from the jacket on the inner wall surface of the cylinder, solidifying in a so-called sticky form, and violently colliding with the part where the blade is applied to form the solidified material. Not only are the blades and the inner wall surface of the cylinder susceptible to wear over time, but the entire device also suffers from vibrations and noise, and furthermore, the drive shaft becomes inconveniently unable to rotate.

This has the disadvantage that the clearance formed between the blade and the cylinder inner wall changes due to wear of the plate and the cylinder inner wall, which deteriorates the accuracy of subsequent products. There was the disadvantage that it was not possible to remove the particles, and as a result, it was impossible to produce a powdered product.

<Object of the Invention> The object of the invention of this application is to solve the technical problems that arise in the treatment process using the blade-fixed thin-film evaporation concentrator based on the above-mentioned prior art, and to solve the inherent advantages of the thin-film evaporation concentration. While taking full advantage of this, the material to be processed flows smoothly between the blade and the cylinder, and the final product is reliably powdered, without wear and tear on the equipment, and without vibration. The object of the present invention is to provide an excellent thin film evaporation concentrator that is useful in the field of chemical mechanical technology application in the product manufacturing industry.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of the invention of this application, which is summarized in the above-mentioned claims, is to supply high viscosity from the supply port at one end of the cylindrical cylinder. A raw material liquid is supplied, a predetermined thermal fluid is supplied to the outer jacket of the cylinder, heat exchange is performed with respect to the raw material liquid flowing inside the cylinder, and the highly viscous raw material liquid supplied into the cylinder is Due to the rotation of a mounted drive shaft, a predetermined number of blades installed on the outer circumferential surface of the shaft rotate, which causes the oil to adhere to the inner wall of the cylinder in a thin film form, flow through it, exchange heat, and volatilize under the action of mixing and stirring. The components are evaporated and dissipated, and the raw material liquid is gradually concentrated. During this time, each blade is swingably mounted on a bracket fixed to the drive shaft.
If the raw material is about to stick to the inner wall of the cylinder due to the swing action, it will be dropped by applying an impact action, and the part that will stick to the blade will be sieved off, and the clearance between the blade and the inner wall of the cylinder will be maintained as designed. During this time, the raw material liquid is evaporated and subjected to a rice action to ensure that it is powdered. The swing angle of the blade during operation can be adjusted in a stepwise or stepless manner using an adjustment tool provided on the bracket. We have taken technical measures to ensure that the benefits of thin film evaporation concentration are fully demonstrated.

<Example> Next, an example of the invention of this application will be described below based on FIGS. 1 to 7. Incidentally, the same parts as in FIG. 8.9 will be explained using the same reference numerals.

In the embodiment shown in FIGS. 1 to 4, 1' is a thin film type evaporation concentration device that constitutes the gist of the invention of this application, and is used for manufacturing chemical products such as powdered foods. is a vertical type embodiment, in which bearings 5.
A drive shaft 9 that is coaxial with the cylinder 3 is integrally provided on a rotating shaft 8 that is supported by a mechanical seal 6 and rotated via a belt pulley mechanism by a motor 7. A large number of brackets 10', 10' are set every 90' in the direction (the brackets 10' can also be square or trapezoidal).
are fixedly installed, and each pair of axial brackets io', i
Each blade 11' is pivotally supported by a pin 112 via a base 111 so as to be swingable in the circumferential direction.

As shown in FIG. 3, the blade 11' has a radius of rotation A' relative to the center of the pin 112 at the base of the blade 11' that is smaller than the outer radius A of the bracket 10'. , the swing angle θ of the blade 11' is predetermined, and therefore the swing angle θ of the blade 11' is determined in advance.
The blade H' can swing freely with a clearance 19 relative to the cylinder 3, and the swing angle at which the base of the blade H' comes into contact with the bracket 10' is a swing angle θ.

Further, a supply port 12 is provided at the top of the cylinder 3, through which a predetermined high-viscosity raw material liquid 13 is supplied, and a supply port 14 for steam 15 is provided at the top of the jacket, and a supply port 14 is provided at the bottom of the jacket. is provided with an outlet 16.

Further, a discharge port 17 is provided at the bottom of the cylinder 3 so that a powdered product 18 can be discharged.

A ring-shaped dispersion plate 20 is integrally provided at the portion of the shaft 9 facing the raw material supply port 12, and a predetermined number of fins 21, 21, etc. It is provided so as to face the evaporation port 22.

In the above configuration, when the motor 7 is rotated, the rotating shaft 8 is supported by the bearing 5 through the belt pulley mechanism and rotated at a predetermined rotational speed, so that the drive shaft 9 is also rotated integrally, and each blade 11' are pivotally supported by the pin 112 of the bracket 10' due to centrifugal force, are integrally centrifugally rotated, and rotated with respect to the inner surface of the cylinder 3 through a clearance 19.

Therefore, when a predetermined high-viscosity raw material liquid 13 is supplied through the supply port 10, the raw material liquid 13 is subjected to a centrifugal action by the ring-shaped dispersion plate 20, and is attached to the inner surface of the cylinder 3 in the form of a thin film. It flows along the inner wall surface of the cylinder 3.

Therefore, the mixture is mixed and stirred by the rotation of each blade 11' to form a thin film on the inner surface of the cylinder 3, and is heated by heat exchange with the steam 15 flowing through the jacket 2, and the volatile components are evaporates, fins 21, 21... after a gas-liquid separation action, the discharge port 22
It is discharged as exhaust steam from or sucked out with a vacuum device,
As a result, the raw material liquid flowing through the inner surface of the cylinder 3 is subjected to the evaporation action and the mixing/stirring action, increasing its concentration and becoming concentrated, and further being subjected to the mixing/stirring action and the heat exchange action, the concentration is gradually increased. Finally, it is powdered and discharged from the discharge port 17 as a product 18.

During this time, the raw material liquid 13 flowing through the inner wall surface of the cylinder 3 increases its viscosity and becomes solidified and powdered by the mixing and stirring action and the heating action, but if it accidentally sticks to the inner wall surface of the cylinder 3. In this case, the tip of the blade 11' escapes from the sticking force and passes through without being damaged;
An impact action is applied to the solids in the passing portion to cause them to peel off and fall, thereby preventing the growth of adhesion to the inner wall surface of the cylinder 3, and removing the solids that stick to the tip of the blade 11' by removing the solids from the plate 11'. As a result, wear and tear on the inner wall surface of the cylinder 3 and the tip of the blade 11' is avoided, and the growth of solids on both is prevented, and the blade 11' is prevented from growing. ’ and the clearance 1 between the inner wall surface of cylinder 3
9 is maintained in the initial state as much as possible, and as a result, the raw material liquid 1
Thin film formation, heat exchange, evaporation, and concentration powder formation in step 3 are maintained as designed.

In this case, the blade 1' involved in these movements
As shown in FIG.
' is reduced by a set amount, and the swing angle θ at which the proximal end portion of the plate 11' contacts the bracket 10' is predetermined according to the design, thereby achieving the above-mentioned impact action and screening action.

The relief action etc. are determined by design.

Therefore, the swing angle θ of the blade 11' of the above embodiment is
is predetermined by design, but in the embodiment shown in FIG. By screwing them together, the swing angle can be determined in a stepwise manner.

Further, as in the embodiment shown in FIG. 6, the swing angle of the blade 11' can be nullified by screwing a slider 24 having a stopper to the bracket 10' while sliding it with a bolt 23' through its groove 25. This can be implemented in stages.

Furthermore, as in the embodiment shown in FIG. 7, the distances h+ and h2 between the pin 112 and the shoulder of the bracket 10' are adjusted to increase the turning angle θ1. It is also possible to adjust θ2.

It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments; for example, the thin film type evaporation concentration device may be of a horizontal type, and various other embodiments may be employed.

As a design change, it is also possible to operate all the blade adjustment functions at once.

Moreover, it goes without saying that the present invention is applicable not only to powdered products but also to products that are ultra-concentrated to a predetermined high viscosity.

<Effect of the invention> As described above, according to the invention of this application, it is basically a food product.

When highly concentrated or powdered products such as drugs and chemicals are obtained using a thin film evaporation concentrator, a set number of blades are installed on the circumference of the shaft of the thin film evaporation concentrator. On the other hand, by swinging freely through a fixed bracket, the raw material liquid is allowed to flow in a thin film state on the inner surface of the cylinder, and through heat exchange with the jacket, volatile components are evaporated and the viscosity is increased. In the process of highly concentrating and powdering through mixing and stirring action and heating action, the impact action on the solid components that grow on the inner surface of the cylinder prevents the growth of solids and prevents damage not only to the blade but also to the inner surface of the cylinder. , promotes peeling and falling due to impact action, and also sieves off solid components adhering to the blade, maintains a constant clearance between the blade and the inner surface of the cylinder, promotes evaporation and concentration of volatile components, and is designed to be powdered. This process has the effect of producing a highly accurate product by performing the process in a consistent manner, increasing the reliability of the product, and preventing the yield from deteriorating.

Furthermore, by providing a swing angle adjuster stepwise or steplessly on a bracket that is pivotally supported on the shaft so that the blade can swing freely, the swing angle of the blade can be adjusted in advance, and the inner wall surface of the cylinder can be adjusted in advance. Impact separation and falling of solids, sieving off of adhering parts to the blade, and falling can be carried out comfortably, and the clearance between the inner surface of the blade and the blade can be maintained constant.

[Brief explanation of the drawing]

The drawings are detailed explanatory diagrams of the invention of this application, in which Fig. 1 is an overall sectional view of one embodiment, Fig. 2 is a cross-sectional view of the same, and Fig. 3 is a sectional view of the swing mode in which the blade is attached to the shaft. , FIG. 4 is a side view of the same, FIG. 5 is a sectional view corresponding to FIG. 3 of the third embodiment, FIG. 6 is a sectional view equivalent to FIG. 3 of another embodiment, and FIG. 7 is a still further embodiment. 8 is a longitudinal sectional view of a general thin film type evaporation concentration device, and FIG. 9 is a cross sectional view of the same. 2...Jacket 3...Cylinder 9...Shaft 11'...Brate 1'...Thin film evaporation concentrator 10'...Brackets 23, 23'...Swing angle adjustment tool? Sheep To3 Sison Z ゝ5 Figure Figure Figure A θ1

Claims (5)

[Claims] (1) In a thin film evaporation concentrator in which a large number of blades are attached to the outer circumferential surface of a drive shaft that is mounted concentrically to a cylindrical cylinder that covers a cylindrical cylinder, the blades are fixedly attached to the drive shaft in a bracket. A device characterized in that the device is pivoted so that it can be freely swung. (2) The thin film evaporation concentration device according to claim 1, wherein the bracket is provided with a blade swing angle adjustment tool. (3) The thin film type evaporation concentration device according to claim 2, wherein the swing angle adjuster is of a stepped type. (4) The thin film type evaporation concentration device according to claim 2, wherein the swing angle adjuster is of a stepless type. (5) The thin film evaporation concentration device according to claim 4, wherein the swing angle adjuster is adjustable in series for all blades.