Preparation device for high-viscosity hydroxypropyl starch ether

Abstract

The utility model discloses a preparation device for high-viscosity hydroxypropyl starch ether, which belongs to the technical field of chemical equipment, aims to solve the problem that the adding speed of raw materials cannot be adjusted according to the reaction rate, and comprises a reaction kettle, supporting legs are fixedly mounted at the bottom of the reaction kettle, and an air adding device is fixedly mounted on the right side of the top of the reaction kettle. A feeding mechanism is arranged on the left side of the top of the reaction kettle, and an adjusting mechanism is mounted on the feeding mechanism; according to the utility model, through the arrangement of the adjusting mechanism, when starch raw materials are added into the reaction kettle, the adding speed of the starch raw materials can be adjusted according to the specific reaction process in the reaction kettle, so that the reaction speed of the starch raw materials in the reaction kettle is improved, the starch raw materials are fully reacted, and the product quality is further improved; in the process of adding the raw materials into the reaction kettle, the adding speed of the raw materials can be adjusted, meanwhile, blockage can be avoided when the raw materials are added, and thus the smooth completion of the reaction is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a preparation device for high-viscosity hydroxypropyl starch ether. Background Art

[0002] Hydroxypropyl starch ether (HPS) is a white fine powder made from natural plants through modification, high etherification reaction, and spray drying. It does not contain plasticizers and is completely different from ordinary starch or modified starch.

[0003] In the prior art, a device for preparing high-viscosity hydroxypropyl starch ether is disclosed in patent publication number CN216879268U. The patent includes a reactor connected to a first feeding device and a second feeding device; the first feeding device includes: a storage tank connected to a first conduit, a plurality of heat dissipation plates are provided on the first conduit, a first valve is also provided on the first conduit, the storage tank is also connected to a second conduit, and the second conduit is connected to a gas cylinder. When in use, the first feeding device is used to add propylene oxide to the reactor, and the second device is used to add starch, water and other raw materials to the reactor. The propylene oxide is placed in a storage tank, which is a closed container, so it can prevent the propylene oxide from evaporating into the atmosphere. At the same time, a radiator is provided on the device, which can effectively prevent the heat in the reactor from being conducted to the storage tank. It is safe and reliable, but there are still the following deficiencies in actual use: From a practical point of view, when adding starch raw materials, the device cannot adjust the rate during the addition process according to the reaction rate. If too much is added at one time, it is easy to cause excessive reaction, affecting the quality of the product. If the addition is insufficient, it will lead to insufficient reaction, so it is necessary to add according to its reaction rate to ensure sufficient reaction and improve the quality of the product.

[0004] Therefore, a device for preparing high-viscosity hydroxypropyl starch ether is needed to solve the problem in the prior art that the addition rate of raw materials cannot be adjusted according to the reaction rate. Utility Model Content

[0005] The purpose of the utility model is to provide a device for preparing high-viscosity hydroxypropyl starch ether to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for preparing high-viscosity hydroxypropyl starch ether, comprising a reactor, a support leg fixedly installed at the bottom of the reactor, an aeration device fixedly installed on the right side of the top of the reactor, a feeding mechanism provided on the left side of the top of the reactor, and an adjustment mechanism installed on the feeding mechanism.

[0007] It should be noted that the feeding mechanism includes a delivery pipe, which is connected to the reactor, a guide hopper is fixedly connected to the top of the delivery pipe, and a feeding port is provided on the left side of the upper part of the guide hopper.

[0008] It is further worth mentioning that the guide hopper is arranged in a conical shape with a larger upper portion and a smaller lower portion, and the lower portion matches the conveying pipe.

[0009] It should be further explained that the adjusting mechanism includes a mounting plate, which is fixedly mounted on the top of the guide hopper, and a support plate is fixedly connected to the top of the mounting plate. A motor is fixedly mounted on the support plate, and a rotating shaft is fixedly connected to the output end of the motor. A bearing is installed on the mounting plate where the rotating shaft intersects with the mounting plate. A fixed block is fixedly connected to the rotating shaft and is arranged in the guide hopper. A cleaning plate is fixedly connected to the fixed block. A brush strip is fixedly mounted on the cleaning plate on the side close to the inside of the guide hopper and is fitted into the inner wall of the guide hopper. A positioning plate is rotatably connected to the rotating shaft at the lower part of the cleaning plate and fixedly mounted on the top of the conveying pipe, and a spiral blade is fixedly mounted on the outer side of the rotating shaft at the lower part of the positioning plate.

[0010] As a preferred embodiment, the cleaning plate is arranged at the lower part of the feeding port through a fixed block to prevent the raw materials from being swept out. Two cleaning plates are provided, and the two cleaning plates are symmetrically arranged on the rotating shaft through a fixed block.

[0011] As a preferred embodiment, the spiral blades are matched and fitted with the inner wall of the conveying pipe.

[0012] Compared with the prior art, the device for preparing high-viscosity hydroxypropyl starch ether provided by the present invention has at least the following beneficial effects:

[0013] (1) Through the setting of the regulating mechanism, when adding starch raw materials into the reactor, the addition rate of the starch raw materials can be adjusted according to the specific reaction process therein, so as to increase the reaction rate in the reactor, enable it to react fully, and thus improve the quality of the product.

[0014] (2) By coordinating the regulating mechanism with the feeding mechanism, during the process of adding the raw materials into the reactor, not only can the addition rate be adjusted, but also it can be ensured that there is no blockage when the raw materials are added, thereby ensuring the smooth completion of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a front view structural diagram of the utility model;

[0017] Figure 3This is a schematic diagram of the top view of the structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the present utility model.

[0019] In the figure: 1. Reactor; 2. Support legs; 3. Aeration device; 4. Feeding mechanism; 401. Conveying pipe; 402. Guide hopper; 403. Feeding port; 5. Adjustment mechanism; 501. Mounting plate; 502. Support plate; 503. Motor; 504. Bearing; 505. Rotating shaft; 506. Fixed block; 507. Cleaning plate; 508. Brush strip; 509. Positioning plate; 5010. Spiral blade. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments.

[0021] See also Figure 1-4 The utility model provides a preparation device for high-viscosity hydroxypropyl starch ether, including a reactor 1, a supporting leg 2 fixedly installed at the bottom of the reactor 1, an aeration device 3 fixedly installed on the right side of the top of the reactor 1, a feeding mechanism 4 is provided on the left side of the top of the reactor 1, and an adjusting mechanism 5 is installed on the feeding mechanism 4.

[0022] The feeding mechanism 4 facilitates the transportation of the starch raw material. At the same time, the regulating mechanism 5 can adjust the transportation speed according to the reaction rate in the reactor 1 to improve the reaction effect, facilitate full reaction, and improve the quality of product molding.

[0023] Further as Figure 3 and Figure 4 As shown, it is worth mentioning that the feeding mechanism 4 includes a conveying pipe 401, which is connected to the reactor 1. A guide hopper 402 is fixedly connected to the top of the conveying pipe 401, and a feeding port 403 is provided on the left side of the upper part of the guide hopper 402. The guide hopper 402 is conical in shape with a larger upper part and a smaller lower part, and the lower part matches the conveying pipe 401.

[0024] The brush strip 508 facilitates cleaning of the starch raw material adhering to the inner wall of the guide hopper 402. At the same time, the rotating shaft 505 rotates to drive the spiral blade 5010 to rotate in the conveying pipe 401, thereby spirally conveying the starch raw material, which can effectively prevent the starch raw material from being blocked in the conveying pipe 401 and improve the raw material conveying efficiency.

[0025] Further as Figure 2 、 Figure 3 and Figure 4As shown, it is worth mentioning that the adjustment mechanism 5 includes a mounting plate 501, which is fixedly mounted on the top of the guide hopper 402, and a support plate 502 is fixedly connected to the top of the mounting plate 501. A motor 503 is fixedly mounted on the support plate 502, and a rotating shaft 505 is fixedly connected to the output end of the motor 503. The rotating shaft 505 intersects with the mounting plate 501 and is provided with a bearing 504 on the mounting plate 501. A fixing block 506 is fixedly connected to the rotating shaft 505 and is provided in the guide hopper 402. A cleaning plate 507 is fixedly connected to the fixing block 506. The cleaning plate 507 is close to the guide hopper 40 A brush strip 508 is fixedly installed on one side of the interior and is fitted with the inner wall of the guide hopper 402. A positioning plate 509 is rotatably connected to the lower part of the cleaning plate 507 on the rotating shaft 505 and is fixedly installed on the top of the conveying pipe 401. A spiral blade 5010 is fixedly installed on the outer side of the rotating shaft 505 at the lower part of the positioning plate 509. The cleaning plate 507 is set at the lower part of the feeding port 403 through a fixed block 506 to prevent the raw materials from being swept out. Two cleaning plates 507 are provided, and the two cleaning plates 507 are symmetrically arranged on the rotating shaft 505 through the fixed block 506. The spiral blade 5010 is matched and fitted with the inner wall of the conveying pipe 401.

[0026] The motor 503 is running, causing the rotating shaft 505 to rotate, and driving the cleaning plate 507 to rotate, so that the starch raw material adhering to the inner wall of the guide hopper 402 can be cleaned through the brush strip 508. At the same time, the rotating shaft 505 rotates to drive the spiral blade 5010 to rotate in the conveying pipe 401, and by adjusting the speed of the motor 503, the conveying speed of the starch raw material can be achieved, and then the addition speed of the starch raw material can be adjusted according to the reaction rate therein, so as to improve the reaction efficiency, facilitate sufficient reaction, and improve the molding quality of the product.

[0027] According to the above working process, it can be known that: through the provided adjustment mechanism 5, when adding starch raw materials into the reactor 1, the addition rate of the starch raw materials can be adjusted according to the specific reaction process therein, so as to increase its reaction rate in the reactor 1, enable it to react fully, and thus improve the quality of the product.

[0028] This solution has the following working process: when this device is used, propylene oxide is added to the reactor 1 through the gas filling device 3, and starch raw materials are added to the reactor 1 through the feeding port 403. At this time, the motor 503 is operated to rotate the rotating shaft 505 and drive the cleaning plate 507 to rotate, so that the starch raw materials adhering to the inner wall of the guide hopper 402 are easily cleaned through the brush strip 508. At the same time, the rotating shaft 505 rotates to drive the spiral blade 5010 to rotate in the conveying pipe 401, and then the starch raw materials are spirally conveyed, which can effectively prevent the starch raw materials from being blocked in the conveying pipe 401, and by adjusting the speed of the motor 503, the conveying speed of the starch raw materials can be achieved, and then the adding speed of the starch raw materials can be adjusted according to the reaction rate therein, so as to improve the reaction efficiency, facilitate full reaction, and improve the molding quality of the product.

[0029] In summary: through the setting of the regulating mechanism 5, when adding starch raw materials into the reactor 1, the addition rate of the starch raw materials can be adjusted according to the specific reaction process therein, so as to increase its reaction rate in the reactor 1, make it fully react, and thus improve the quality of the product; through the regulating mechanism 5 in conjunction with the feeding mechanism 4, in the process of adding the raw materials into the reactor 1, not only can the addition rate be adjusted, but also it can be ensured that there will be no blockage when the raw materials are added, thereby ensuring the smooth completion of the reaction.

Claims

1. A device for preparing high-viscosity hydroxypropyl starch ether, comprising a reaction kettle (1), characterized in that: A supporting leg (2) is fixedly installed at the bottom of the reactor (1), an aeration device (3) is fixedly installed on the right side of the top of the reactor (1), a feeding mechanism (4) is arranged on the left side of the top of the reactor (1), and an adjustment mechanism (5) is installed on the feeding mechanism (4).

2. A device for preparing high-viscosity hydroxypropyl starch ether according to claim 1, characterized in that: The feeding mechanism (4) comprises a conveying pipe (401), the conveying pipe (401) is connected to the reaction kettle (1), a guide hopper (402) is fixedly connected to the top of the conveying pipe (401), and a feeding port (403) is arranged on the left side of the upper part of the guide hopper (402).

3. A device for preparing high-viscosity hydroxypropyl starch ether according to claim 2, characterized in that: The guide hopper (402) is arranged in a conical shape with a larger upper portion and a smaller lower portion, and the lower portion matches the conveying pipe (401).

4. A device for preparing high-viscosity hydroxypropyl starch ether according to claim 1, characterized in that: The adjusting mechanism (5) comprises a mounting plate (501), wherein the mounting plate (501) is fixedly mounted on the top of the guide hopper (402), the top of the mounting plate (501) is fixedly connected to a support plate (502), a motor (503) is fixedly mounted on the support plate (502), a rotating shaft (505) is fixedly connected to the output end of the motor (503), a bearing (504) is mounted on the mounting plate (501) at the intersection of the rotating shaft (505) and the mounting plate (501), and a fixing block (504) is fixedly connected to the rotating shaft (505). 506) and is arranged in the guide hopper (402), a cleaning plate (507) is fixedly connected to the fixed block (506), a brush strip (508) is fixedly installed on the cleaning plate (507) near the inner side of the guide hopper (402) and is arranged in close contact with the inner wall of the guide hopper (402), a positioning plate (509) is rotatably connected to the lower part of the cleaning plate (507) on the rotating shaft (505) and is fixedly installed on the top of the conveying pipe (401), and a spiral blade (5010) is fixedly installed on the outer side of the rotating shaft (505) at the lower part of the positioning plate (509).

5. A device for preparing high-viscosity hydroxypropyl starch ether according to claim 4, characterized in that: The cleaning plate (507) is arranged at the lower part of the feeding port (403) through a fixing block (506) to prevent the raw materials from being swept out. Two cleaning plates (507) are provided, and the two cleaning plates (507) are symmetrically arranged on the rotating shaft (505) through a fixing block (506).

6. A device for preparing high-viscosity hydroxypropyl starch ether according to claim 4, characterized in that: The spiral blade (5010) is arranged to match and fit the inner wall of the conveying pipe (401).

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