Novel starch sugar crystallizer

Abstract

The utility model belongs to the technical field of crystallizers, and discloses a novel starch sugar crystallizer which comprises a shell, a spacer bush is fixedly mounted on the inner wall of the shell in the length direction, a pressure relief cavity is formed between the spacer bush and the inner wall of the shell and filled with liquid, and a plurality of overflow valves are linearly arrayed on the outer wall of the shell in the length direction. A central shaft is rotationally installed in the middle of the interior of the shell, one end of the central shaft is connected with a liquid inlet pipe, the other end of the central shaft is connected with a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe communicate with the same coil pipe set in the shell; the liquid inlet pipe penetrates through the side wall of the shell and then is fixedly connected with a driving device for driving the central shaft to rotate; according to the utility model, the whole structure is simple, the cooling liquid can uniformly flow in the coil pipe, the cooling effect is improved, the pressure in the crystallizer is automatically adjusted in the crystallization process, and the use effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crystallizer technical field, specifically speaking, relate to a novel starch sugar crystallizer. BACKGROUND

[0002] Starch sugar crystallizer is a kind of equipment specially used for starch sugar production, and the working principle of starch sugar crystallizer is based on the change of solubility of solute in solution with temperature change.Under proper temperature, by controlling the flow and stirring of solution, the solute in solution reaches certain supersaturation, so as to start crystallization.

[0003] Temperature is an important factor affecting solution crystallization.Starch sugar crystallizer is usually equipped with heating and cooling system to accurately control the temperature of solution.By heating, the solution reaches the temperature range suitable for crystallization, and by cooling, the solute in solution can be promoted to crystallize and precipitate.

[0004] In starch sugar crystallizer, through cooling process, the temperature of solution can be reduced to reach supersaturation state.When the supersaturation degree is high enough, starch sugar molecules will start to aggregate and form crystals.This is because with the reduction of temperature, the movement speed of solute molecules (i.e.starch sugar molecules) in solution slows down, and the collision opportunity between them increases, which is beneficial to the formation of crystal nucleus and the growth of crystals.

[0005] In the process of starch sugar crystallization, the selection of cooling method has important influence on the quality and yield of crystals.Common cooling methods include ice bath cooling and room temperature cooling, etc.Ice bath cooling can quickly reduce the temperature of solution, and is suitable for occasions requiring rapid supersaturation state, while room temperature cooling is relatively mild, and is suitable for occasions requiring slow crystallization to obtain larger crystals.

[0006] In ice bath cooling, by setting coil in crystallizer, the crystallization solution wraps the coil, and then cooling liquid is introduced into the coil to realize solution crystallization.In existing crystallizer, the coil arrangement scheme is single, which affects the flow of cooling liquid, reduces the cooling crystallization effect, and when the solute precipitates and forms crystals in the crystallizer, the volume of solution may decrease, which increases the internal pressure of solution, causes certain damage to the outer wall of crystallizer, and affects the service life of equipment.

[0007] A crystallizer disclosed in a Chinese patent with application number CN2017100423758 includes a center shaft, the center shaft includes a center pipe, a coil cooling device is arranged on the outside of the center pipe, a water inlet pipe assembly and a water outlet pipe assembly are arranged in the center pipe, and the water inlet pipe assembly and the water outlet pipe assembly are communicated with the coil cooling device.The above technical scheme has the following beneficial effects:fast, uniform and high-quality crystallization can be realized, crystalline sugar clumping can be effectively prevented, crystalline sugar pressed on the end plate can be easily removed, the structure has high strength and is not easy to be damaged, etc.

[0008] But the patent in cooling, cooling water from the water inlet pipe group into, and from the water outlet pipe assembly output, back and forth through the length direction of the crystallization machine, and the coil is arranged in the entire inner cavity of the crystallization machine, the overall length is long, the cooling water once too long, resulting in the cooling effect of the cooling water in the late decline, thereby reducing the crystallization rate, at the same time, in the crystallization process, will cause the pressure inside the crystallization machine to increase, damage to the outer wall, unable to carry out pressure relief treatment, affect the service life. The utility model discloses

[0009] The utility model discloses a novel starch sugar crystallization machine which has simple overall structure, can ensure that the cooling liquid flows uniformly in the coil, improve the cooling effect, automatically regulate the pressure inside the crystallization machine during the crystallization process, and improve the use effect.

[0010] To solve the above technical problems, the utility model provides the following technical scheme:

[0011] A novel starch sugar crystallization machine, including the shell, the inner wall of the shell length direction is fixedly installed with the spacer, and the spacer is arranged between the inner wall of the shell and is filled with liquid as a pressure relief cavity, the outer wall of the shell length direction is linear array with a plurality of overflow valves, a plurality of overflow valves all are connected with pressure relief cavity, the middle position of the shell inside is rotatably installed with the central shaft, and the one end of central shaft is connected with the liquid inlet pipe, and the other end of central shaft is connected with the liquid outlet pipe, and the same group of coil groups are communicated in the shell inside with the liquid inlet pipe and the liquid outlet pipe, and the liquid inlet pipe is fixedly connected with the driving device that drives the rotation of the central shaft after penetrating the lateral wall of the shell, and the outer surface of the coil group is fixedly connected with the stirring knife.

[0012] The utility model discloses the further optimization of the above technical scheme:

[0013] The outer surface of the spacer is vertically arranged with a sealing plate at both ends, and the other end face of the two sealing plates is sealingly connected with the inner wall of the shell.

[0014] A plurality of support plates in linear array are vertically arranged on the outer surface of the spacer close to the shell between the two sealing plates, the other end face of all support plates is fixedly connected with the inner wall of the shell, and the spacer is made of soft material.

[0015] Further optimization: the mechanical seal is arranged at the connection between the liquid inlet pipe and the shell, and the connection between the liquid outlet pipe and the shell.

[0016] Further optimization: the liquid inlet box is communicated with the connection between the liquid inlet pipe and the central shaft, and the liquid inlet box is fixedly installed in the central shaft.

[0017] Further optimization: the first branch pipe is communicated with the first inner connecting pipe, and the first branch pipe is vertically arranged with the liquid inlet pipe.

[0018] Further optimization: the second branch pipe is communicated with the second inner connecting pipe, and the second branch pipe is vertically arranged with the liquid inlet pipe.

[0019] Further optimization: the coil group comprises the first inner coil which is communicated with the inner connecting pipe, and the first inner coil is arranged on the outer surface of the central shaft, and the inner diameter of the first inner coil is larger than that of the inner connecting pipe.

[0020] Further optimization: the other end of the outer connecting pipe is communicated with the first outer coil through the reducing joint, the first outer coil is arranged on the outer surface of the central shaft, and the first outer coil is staggered with the first inner coil.

[0021] Further optimization: the other end of the first inner coil is communicated with the second outer coil, the second outer coil is arranged on the outer surface of the central shaft, the other end of the first outer coil is communicated with the second inner coil, and the second inner coil is arranged on the outer surface of the central shaft.

[0022] The end surface of the liquid outlet pipe connected with the central shaft is further communicated with the liquid outlet box, and the second outer coil and the second inner coil are communicated with the liquid outlet box.

[0023] The utility model discloses the above-mentioned technical scheme, clever design, reasonable structure can carry out cooling crystallization to starch sugar solution, through setting up the first inner coil, second inner coil and first outer coil, second outer coil of different winding diameter, the flow of cooling liquid is reasonably planned, and the flow rate and flow of cooling liquid are controlled, and the cooling effect is improved, and then the crystallization effect is improved, simultaneously, the shell inner wall is installed with the spacer sleeve made of soft material, when the pressure increases in the crystallization process, the pressure received by the shell is relieved through the overflow of water in the pressure relief cavity from the overflow valve, and the shell is protected to a certain extent, and the service life of the shell is prolonged.

[0024] The utility model is further illustrated below in connection with the drawings and examples. DRAWINGS

[0025] Fig. 1 It is the internal structure schematic view of the whole structure in the embodiment of the utility model;

[0026] Fig. 2 It is the structure schematic view of A-A in the embodiment of the utility model.

[0027] In the figure: 1, the shell; 11, the spacer; 12, the support plate; 13, the overflow valve; 14, the feed inlet; 15, the sealing plate; 16, the mechanical seal; 2, the center shaft; 21, the first bearing seat; 22, the second bearing seat; 23, the liquid inlet pipe; 24, the liquid inlet box; 25, the liquid outlet pipe; 26, the liquid outlet box; 27, the first branch pipe; 28, the second branch pipe; 29, the inner connecting pipe; 290, the outer connecting pipe; 3, the coil group; 31, the first outer coil; 32, the first inner coil; 33, the second outer coil; 34, the second inner coil; 4, the driving device; 5, the stirring knife; 51, the fixed strip. DETAILED DESCRIPTION

[0028] As Figs. 1-2 shown: a new starch sugar crystallization machine, including the shell 1, the inner wall of the length direction of the shell 1 is fixedly installed with the spacer 11, the spacer 11 and the inner wall of the shell 1 are arranged as a pressure relief cavity and filled with liquid, the outer wall of the shell 1 is linearly arrayed with a plurality of overflow valves 13 in the length direction, the plurality of overflow valves 13 are all communicated with the pressure relief cavity, a center shaft 2 is rotatably installed at the middle position inside the shell 1, one end of the center shaft 2 is connected with a liquid inlet pipe 23, the other end of the center shaft 2 is connected with a liquid outlet pipe 25, the liquid inlet pipe 23 and the liquid outlet pipe 25 are communicated with the same set of coil group 3 inside the shell 1, the liquid inlet pipe 23 penetrates through the side wall of the shell 1 and is fixedly connected with a driving device 4 for driving the center shaft 2 to rotate, the outer surface of the coil group 3 is fixedly connected with a stirring knife 5.

[0029] In this embodiment, the shell 1 is fixedly installed on the ground by a support, which is not marked in the figure, and the support is made of a plurality of square tubes with different lengths.

[0030] The outer surface of the shell 1 is communicated with a feed inlet 14 near one end position, and the mixed solution of starch sugar enters from the feed inlet 14.

[0031] A sealing cover is also hinged at the entrance of the feed inlet 14, and the hinged sealing principle is known in the prior art and will not be described here.

[0032] Two sealing plates 15 are vertically arranged on the outer surface of the spacer 11 at both ends respectively, and the other end faces of the two sealing plates 15 are sealingly connected with the inner wall of the shell 1.

[0033] A plurality of support plates 12 in linear array are vertically arranged on the outer surface of the spacer 11 between the two sealing plates 15 near the shell 1, and the other end faces of all the support plates 12 are fixedly connected with the inner wall of the shell 1.

[0034] In this way, the pressure relief cavity between the outer surface of the spacer 11 and the inner wall of the shell 1 can become a sealed cavity, and when the liquid is filled, the liquid does not leak.

[0035] In this embodiment, the spacer sleeve 11 is made of soft material, and the liquid filled in the pressure relief cavity is water.

[0036] The feed inlet 14 is in communication with the inside of the shell 1 after penetrating the spacer sleeve 11. When the mixed solution of starch sugar enters from the feed inlet 14, it enters the inside of the spacer sleeve 11 to crystallize.

[0037] When the pressure increases, the spacer sleeve 11 is extruded against the inner wall, and then the spacer sleeve 11 is extruded against the water in the pressure relief cavity. The water flows out of the overflow valve 13, reducing the pressure on the inner wall of the shell 1 and prolonging the service life of the shell 1.

[0038] The small amount of water overflowing from the overflow valve 13 flows into the container placed below the shell 1, which is not marked in the figure. The small amount of water overflowing from the overflow valve 13 flows into the container to avoid pollution to the surrounding environment.

[0039] The overflow valve 13 can be obtained from the market. The overflow valve 13 is opened by pressure, and its specific working principle is known, which will not be repeated here.

[0040] The first bearing seat 21 is fixedly installed near the liquid inlet pipe 23 of the shell 1, and the liquid inlet pipe 23 is fixedly installed in the middle hole of the first bearing seat 21.

[0041] The second bearing seat 22 is fixedly installed near the liquid outlet pipe 25 of the shell 1, and the liquid outlet pipe 25 is fixedly installed in the middle hole of the second bearing seat 22.

[0042] In this way, the center shaft 2 can rotate on the first bearing seat 21 and the second bearing seat 22.

[0043] Mechanical seals 16 are arranged at the connection between the liquid inlet pipe 23 and the shell 1 and the connection between the liquid outlet pipe 25 and the shell 1.

[0044] The sealing principle of the mechanical seal 16 is known and widely used, which will not be repeated here.

[0045] In this way, it can be avoided that the mixed liquid of starch sugar leaks from the connection between the liquid inlet pipe 23 and the shell 1 and the connection between the liquid outlet pipe 25 and the shell 1.

[0046] The liquid inlet pipe 23 is also connected with a liquid inlet box 24 at the connection between the liquid inlet pipe 23 and the center shaft 2, and the liquid inlet box 24 is fixedly installed in the center shaft 2.

[0047] The other end of the liquid inlet pipe 23 is in communication with an external total device for containing cooling liquid, which can control the cooling liquid to enter the liquid inlet pipe 23.

[0048] The first branch pipe 27 is communicated with one end of the liquid inlet box 24 and is vertically arranged with the liquid inlet pipe 23.

[0049] The other end of the first branch pipe 27 is communicated with the inner connecting pipe 29.

[0050] The second branch pipe 28 is communicated with the liquid inlet box 24 near the first branch pipe 27 and is vertically arranged with the liquid inlet pipe 23.

[0051] The other end of the second branch pipe 28 is communicated with the outer connecting pipe 290.

[0052] The coil group 3 comprises the first inner coil 32 communicated with the inner connecting pipe 29 through the reducing joint and simultaneously arranged on the outer surface of the central shaft 2.

[0053] The inner diameter of the first inner coil 32 is larger than that of the inner connecting pipe 29.

[0054] The other end of the outer connecting pipe 290 is communicated with the first outer coil 31 through the reducing joint, and the first outer coil 31 is simultaneously arranged on the outer surface of the central shaft 2.

[0055] The first outer coil 31 is staggered with the first inner coil 32.

[0056] The arrangement diameter of the first outer coil 31 around the central shaft 2 is larger than that of the first inner coil 32 around the central shaft 2, that is, the overall length of the first outer coil 31 is longer than that of the first inner coil 32.

[0057] The other end of the first inner coil 32 is communicated with the second outer coil 33, and the second outer coil 33 is simultaneously arranged on the outer surface of the central shaft 2.

[0058] The other end of the first outer coil 31 is communicated with the second inner coil 34, and the second inner coil 34 is simultaneously arranged on the outer surface of the central shaft 2.

[0059] The arrangement diameter of the second outer coil 33 around the central shaft 2 is larger than that of the second inner coil 34 around the central shaft 2.

[0060] The arrangement diameter of the second outer coil 33 around the central shaft 2 is the same as that of the first outer coil 31 around the central shaft 2.

[0061] The arrangement diameter of the second inner coil 34 around the central shaft 2 is the same as that of the first inner coil 32 around the central shaft 2.

[0062] The end surface of the liquid outlet pipe 25 connected with the central shaft 2 is also communicated with the liquid outlet box 26, and the liquid outlet box 26 is simultaneously fixedly installed inside the central shaft 2.

[0063] One end of the liquid outlet box 26 is communicated with the third and fourth sub-liquid branch pipes which are close to each other, not marked in the figure, and the third and fourth sub-liquid branch pipes are vertically arranged with the liquid outlet pipe 25.

[0064] The third and fourth sub-liquid branch pipes have the same structure as the first and second sub-liquid branch pipes 27 and 28.

[0065] The other end of the second outer coil pipe 33 is communicated with the third sub-liquid branch pipe, and the other end of the second inner coil pipe 34 is communicated with the fourth sub-liquid branch pipe.

[0066] The first and second outer coil pipes 31 and 33 are both provided with a plurality of fixed bars 51 on the surfaces, and the stirring knives 5 are fixedly installed at the other ends of all the fixed bars 51.

[0067] In the embodiment, the stirring knives 5 are arranged in a spiral shape, and the ends of the stirring knives 5 are in contact with the inner surface of the spacer sleeve 11, that is, the stirring knives 5 can stir the solution during the crystallization process, and can also scrape the inner surface of the spacer sleeve 11 to avoid the adhesion of the crystalline body to the inner surface of the spacer sleeve 11.

[0068] The outer shell 1 is also provided with a control system for controlling the operation of the crystallization machine at the outer position, and the specific control principle and connection mode are known and widely used, and will not be described here.

[0069] In the embodiment, the driving device 4 is fixedly connected to the end of the liquid inlet pipe 23 through the power output end of the motor reducer, and then drives the rotation of the central shaft 2, the coil pipe group 3 and the stirring knives 5.

[0070] When the crystallization machine is used, the mixed solution of starch sugar is delivered into the spacer sleeve 11 through the feed inlet 14, the sealing cover of the feed inlet 14 is closed, the control system controls the driving device 4 to be started, and the central shaft 2, the coil pipe group 3 and the stirring knives 5 are driven to rotate, and at the same time, the external cooling liquid device is opened, the cooling liquid enters the liquid inlet box 24 through the liquid inlet pipe 23, and then enters the first and second sub-liquid branch pipes 27 and 28, respectively;

[0071] The cooling liquid of the first sub-liquid branch pipe 27 enters the first inner coil pipe 32 through the inner connecting pipe 29, and the cooling liquid of the second sub-liquid branch pipe 28 enters the first outer coil pipe 31 through the outer connecting pipe 290.

[0072] Since the inner connecting tube 29 and the outer connecting tube 290 have smaller inner diameters than the first inner coil tube 32 and the first outer coil tube 31, the flow rate of the cooling liquid in the inner connecting tube 29 and the outer connecting tube 290 is greater than the flow rate of the cooling liquid in the first inner coil tube 32 and the first outer coil tube 31, that is, the inner connecting tube 29 and the outer connecting tube 290 facilitate the rapid entry of the cooling liquid into the coil group 3, and then the first inner coil tube 32 and the first outer coil tube 31 with large diameters are used again, so that the flow rate of the cooling liquid in the first inner coil tube 32 and the first outer coil tube 31 is reduced, the cooling effect is increased, and the effect of controlling the flow rate is achieved.

[0073] Meanwhile, the first inner coil tube 32 and the first outer coil tube 31 with different winding diameters are arranged, the cooling area is increased, and the cooling effect is further improved.

[0074] Then, the cooling liquid flowing out of the first inner coil tube 32 enters the second outer coil tube 33, and the cooling liquid flowing out of the first outer coil tube 31 enters the second inner coil tube 34, that is, when the cooling liquid in the first inner coil tube 32 and the first outer coil tube 31 travels for a period of time, the cooling liquid in the first outer coil tube 31 with a large winding diameter absorbs a large amount of heat, and the cooling effect is relatively reduced, so that the cooling liquid enters the second inner coil tube 34 with a small winding diameter, the flow rate of the cooling liquid is increased, the cooling liquid in the first inner coil tube 32 with a small winding diameter absorbs a small amount of heat, and the cooling effect is high, so that the cooling liquid enters the second outer coil tube 33 with a large winding diameter, and the flow rate of the cooling liquid is reduced, so that the overall cooling effect is further improved, the flow rate is controlled, and the cooling efficiency is improved.

[0075] Finally, the cooling liquid in the coil group 3 enters the liquid outlet box 26 in sequence, flows out through the liquid outlet pipe 25, releases heat, and is used for circulation cooling.

[0076] During the cooling period, when the pressure in the spacer sleeve 11 increases, the water in the pressure relief chamber is compressed, and the water flows out of the overflow valve 13, so that the shell 1 is protected, and the service life is prolonged; meanwhile, the stirring knife 5 stirs the solution while scraping the inner wall of the spacer sleeve 11, so that the inner wall of the spacer sleeve 11 is conveniently cleaned.

[0077] For those skilled in the art, according to the teaching of the present application, the changes, modifications, replacements and deformations made to the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A novel starch sugar crystallizer, comprising a shell (1), characterized in that: A spacer (11) is fixedly installed on the inner wall of the outer shell (1) along its length. The spacer (11) and the inner wall of the outer shell (1) are configured as a pressure relief chamber and filled with liquid. Multiple overflow valves (13) are linearly arrayed on the outer wall of the outer shell (1) along its length. All multiple overflow valves (13) are connected to the pressure relief chamber. A central shaft (2) is rotatably installed at the middle position inside the outer shell (1). One end of the central shaft (2) is connected to an inlet pipe (23), and the other end of the central shaft (2) is connected to an outlet pipe (25). The inlet pipe (23) and the outlet pipe (25) are connected to the same set of coils (3) inside the outer shell (1). After the inlet pipe (23) passes through the side wall of the outer shell (1), a drive device (4) for driving the central shaft (2) to rotate is fixedly connected. A stirring blade (5) is fixedly connected to the outer surface of the coils (3).

2. The novel starch sugar crystallizer according to claim 1, characterized in that: Sealing plates (15) are vertically arranged at both ends of the outer surface of the spacer (11), and the other end face of the two sealing plates (15) is sealed to the inner wall of the outer shell (1). On the outer surface of the spacer (11) near the outer shell (1), multiple support plates (12) are arranged vertically in a linear array between two sealing plates (15). The other end face of all support plates (12) is fixedly connected to the inner wall of the outer shell (1). The spacer (11) is made of soft material.

3. The novel starch sugar crystallizer according to claim 2, characterized in that: Mechanical seals (16) are provided at the connection between the liquid inlet pipe (23) and the outer shell (1) and at the connection between the liquid outlet pipe (25) and the outer shell (1).

4. A novel starch sugar crystallizer according to claim 3, characterized in that: The inlet pipe (23) is connected to the central shaft (2) and the inlet box (24) is also connected. The inlet box (24) is fixedly installed inside the central shaft (2).

5. A novel starch sugar crystallizer according to claim 4, characterized in that: One end of the liquid inlet box (24) is connected to a first liquid distribution branch pipe (27), which is arranged perpendicularly to the liquid inlet pipe (23). The other end of the first liquid distribution branch pipe (27) is connected to an inner connecting thin tube (29).

6. A novel starch sugar crystallizer according to claim 5, characterized in that: The liquid inlet box (24) is connected to a second liquid distribution branch (28) near the first liquid distribution branch (27). The second liquid distribution branch (28) is arranged perpendicularly to the liquid inlet pipe (23), and the other end of the second liquid distribution branch (28) is connected to an external connecting thin tube (290).

7. A novel starch sugar crystallizer according to claim 6, characterized in that: The coil assembly (3) includes a first inner coil (32) that communicates with the inner connecting tube (29). The first inner coil (32) is also wound around the outer surface of the central shaft (2). The inner diameter of the first inner coil (32) is larger than the inner diameter of the inner connecting tube (29).

8. A novel starch sugar crystallizer according to claim 7, characterized in that: The other end of the external connecting tube (290) is connected to the first outer coil (31) through a reducing joint. The first outer coil (31) is also wound around the outer surface of the central shaft (2). The first outer coil (31) and the first inner coil (32) are arranged alternately.

9. A novel starch sugar crystallizer according to claim 8, characterized in that: The other end of the first inner coil (32) is connected to the second outer coil (33), and the second outer coil (33) is wound around the outer surface of the central shaft (2). The other end of the first outer coil (31) is connected to the second inner coil (34), and the second inner coil (34) is wound around the outer surface of the central shaft (2). The end face of the outlet pipe (25) connected to the central shaft (2) is also connected to the outlet box (26), and the second outer coil (33) and the second inner coil (34) are both connected to the outlet box (26).

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