A solid-liquid separation device for hydroxypropyl methylcellulose production

Abstract

The utility model discloses a kind of solid-liquid separation devices for hydroxypropyl methyl cellulose production, including tank body, the inside fixed tank of tank body, stirring structure is equipped on the inner tank, the side of stirring structure is equipped with wall scraping structure, the inner tank is evenly opened on and is equipped with water leakage hole, spraying structure is equipped between tank body and inner tank, the water outlet is equipped in tank body lower side, the inner tank upper side is equipped with feed inlet, lower side is equipped with discharge port, the utility model belongs to solid-liquid separation technical field, specifically refers to a kind of solid-liquid separation device for hydroxypropyl methyl cellulose production. Effectively solve the problem that solid is easy to stick on inner wall when separating in traditional solid-liquid separation device, water leakage hole can be blocked, leading to the problem of poor separation effect, it is a new modern solid-liquid separation device for hydroxypropyl methyl cellulose production.

Description

Technical Field

[0001] This utility model belongs to the field of solid-liquid separation technology, specifically referring to a solid-liquid separation device for the production of hydroxypropyl methylcellulose. Background Technology

[0002] Hydroxypropyl methylcellulose (HMCMC) is a type of nonionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer commonly used as a lubricant in ophthalmology, or as an excipient or excipient in oral medications, and is found in various commercial products. As a food additive, HMCMC can function as an emulsifier, thickener, suspending agent, and substitute for animal gelatin. During production, HMCMC requires washing the product with a large amount of water to remove impurities such as salts generated during the reaction and unreacted raw materials. After washing, a preliminary solid-liquid separation is performed, followed by a second dehydration of the separated solids using a centrifuge.

[0003] In existing solid-liquid separation devices, solids tend to stick to the inner wall during separation, which can clog the water leakage holes and result in poor separation performance. Utility Model Content

[0004] The problem this invention aims to solve is that in traditional solid-liquid separation devices, solids tend to stick to the inner wall during separation, which can clog the water leakage holes and result in poor separation performance.

[0005] To solve the above-mentioned technical problems, this utility model proposes a solid-liquid separation device for the production of hydroxypropyl methylcellulose, including a tank body, an inner tank fixed inside the tank body, a stirring structure on the inner tank, a wall scraping structure on the side of the stirring structure, water leakage holes evenly opened on the inner tank, a spray structure between the tank body and the inner tank, a water outlet on the lower side of the tank body, a feeding port on the upper side and a discharging port on the lower side of the inner tank;

[0006] The wall scraping structure includes lead screws that are vertically rotatable at both ends of the inner tank. The lead screws are threaded with annular scrapers, and the lead screws are driven by a wall scraping motor fixed on the upper side of the inner tank.

[0007] Furthermore, a vertically arranged sliding rod is fixed on the other side of the inner tank, and the other end of the annular scraper is slidably mounted on the sliding rod.

[0008] Furthermore, the stirring structure includes a rotating shaft that is vertically rotatably mounted on the inner tank, and a stirring paddle is mounted on the rotating shaft. The rotating shaft is driven by a stirring motor fixed to the upper side of the inner tank.

[0009] Furthermore, the spray structure includes an array of circular water pipes fixed inside the tank, an array of spray heads fixed on the circular water pipes, the circular water pipes being connected by vertical water pipes, and the upper ends of the vertical water pipes extending out of the tank.

[0010] Furthermore, the discharge port is located at the lowest point of the inner tank, and the water outlet is located at the lowest point of the tank body.

[0011] Furthermore, a support frame is fixed to the bottom of the tank.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] The motor rotates the lead screw, causing the annular scraper to scrape the wall back and forth, preventing the water leakage holes from getting clogged and preventing water from passing through. This solves the problem that solids tend to stick to the inner wall during solid-liquid separation, clogging the water leakage holes and resulting in poor separation performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0015] Figure 2 A cross-sectional view of an embodiment of this utility model. Figure 1 ;

[0016] Figure 3 A cross-sectional view of an embodiment of this utility model. Figure 2 ;

[0017] Figure 4 A cross-sectional view of an embodiment of this utility model. Figure 3 ;

[0018] Figure 5 A cross-sectional view of an embodiment of this utility model. Figure 4 .

[0019] Among them, 1. Tank body, 2. Inner tank, 3. Drain hole, 4. Water outlet, 5. Feeding port, 6. Discharge port, 7. Screw, 8. Annular scraper, 9. Wall scraping motor, 10. Slide rod, 11. Rotating shaft, 12. Agitator, 13. Agitator motor, 14. Circular water pipe, 15. Spray head, 16. Vertical water pipe, 17. Support frame.

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-5 As shown, the present invention proposes a solid-liquid separation device for the production of hydroxypropyl methylcellulose, comprising a tank body 1, an inner tank 2 fixed inside the tank body 1, a stirring structure on the inner tank 2, a wall scraping structure on the side of the stirring structure, water leakage holes 3 evenly opened on the inner tank 2, a spray structure between the tank body 1 and the inner tank 2, a water outlet 4 on the lower side of the tank body 1, a feeding port 5 on the upper side of the inner tank 2, and a discharging port 6 on the lower side.

[0023] As per the instruction manual Figure 2 As shown, the wall scraping structure includes a lead screw 7 vertically rotatably mounted at both ends of the inner tank 2, with an annular scraper 8 threaded onto the lead screw 7. The lead screw 7 is driven by a wall scraping motor 9 fixed on the upper side of the inner tank 2.

[0024] To make the annular scraper 8 more stable, a vertically arranged slide bar 10 is fixed on the other side of the inner tank 2, and the other end of the annular scraper 8 is slidably mounted on the slide bar 10.

[0025] The stirring structure includes a rotating shaft 11 that is vertically rotatable on the inner tank 2, and a stirring paddle 12 is provided on the rotating shaft 11. The rotating shaft 11 is driven by a stirring motor 13 that is fixed on the upper side of the inner tank 2.

[0026] As per the instruction manual Figure 5 As shown, the spray structure includes an array of circular water pipes 14 fixed inside the tank 1, an array of spray heads 15 fixed on the circular water pipes 14, and the circular water pipes 14 are connected by vertical water pipes 16, with the upper end of the vertical water pipes 16 extending out of the tank 1.

[0027] As per the instruction manual Figure 1 As shown, the discharge port 6 is located at the lowest point of the inner tank 2, the water outlet 4 is located at the lowest point of the tank body 1, and a support frame 17 is fixed at the bottom of the tank body 1.

[0028] In practical use, hydroxypropyl methylcellulose and water are added through the feed port 5. Due to the presence of the drain hole 3, the hydroxypropyl methylcellulose is located in the inner tank 2, while the water is located between the inner tank 2 and the tank body 1. The stirring device is operated to stir the water and hydroxypropyl methylcellulose, dissolving impurities in the water. Since most of the water is between the tank body 1 and the inner tank 2, the motor is operated to rotate the lead screw 7, causing the annular scraper 8 to scrape the wall back and forth, preventing the drain hole 3 from becoming blocked and preventing water from passing through. During solid-liquid separation, the drain outlet is opened directly to release most of the water, while a small portion flows out slowly. This step is repeated until the washing is finished. The hydroxypropyl methylcellulose is then discharged through the feed port 6. Finally, while the annular scraper 8 is running, water is added to the vertical water pipe 16, causing the spray head 15 to spray, which helps to flush down and clean the hydroxypropyl methylcellulose that is stuck to the inner wall by the annular scraper 8. The above is the entire usage process of the solid-liquid separation device used for the production of hydroxypropyl methylcellulose.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A solid-liquid separation device for the production of hydroxypropyl methylcellulose, comprising a tank (1), wherein an inner tank (2) is fixed inside the tank (1), and the inner tank (2) is provided with a stirring structure, characterized in that: The stirring structure is provided with a wall scraping structure on the side, and the inner tank (2) is provided with drainage holes (3) evenly on the upper side. A spray structure is provided between the tank body (1) and the inner tank (2). The tank body (1) is provided with a water outlet (4) on the lower side. The inner tank (2) is provided with a feeding port (5) on the upper side and a discharging port (6) on the lower side. The wall scraping structure includes a lead screw (7) that rotates vertically at both ends of the inner tank (2), and an annular scraper (8) is threaded onto the lead screw (7). The lead screw (7) is driven by a wall scraping motor (9) fixed on the upper side of the inner tank (2).

2. The solid-liquid separation device for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The inner tank (2) has a fixed vertically arranged slide rod (10) on the other side, and the other end of the annular scraper (8) is slidably arranged on the slide rod (10).

3. A solid-liquid separation device for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The stirring structure includes a rotating shaft (11) that is vertically rotatable on the inner tank (2), and a stirring paddle (12) is provided on the rotating shaft (11). The rotating shaft (11) is driven by a stirring motor (13) fixed on the upper side of the inner tank (2).

4. A solid-liquid separation device for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The spray structure includes an array of circular water pipes (14) fixed inside the tank (1), an array of spray heads (15) fixed on the circular water pipes (14), the circular water pipes (14) being connected by vertical water pipes (16), the upper end of the vertical water pipes (16) extending out of the tank (1).

5. A solid-liquid separation device for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The discharge port (6) is located at the lowest point of the inner tank (2), and the water outlet (4) is located at the lowest point of the tank body (1).

6. A solid-liquid separation device for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The bottom of the tank (1) is fixed with a support frame (17).

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