Icodextrin separation and purification device

Abstract

The utility model belongs to the technical field of separation devices, and particularly relates to an icodextrin separation and purification device which comprises a material storage tank, a spiral filter connected with the material storage tank, a plate and frame filter connected with the spiral filter, a central shaft arranged in the spiral filter, and a motor connected with the top of the central shaft penetrating through the spiral filter. A feeding plate is spirally arranged on the center shaft, a filter screen is arranged in the spiral filter in a surrounding mode, a feeding port is formed in the upper portion of the side wall of the spiral filter, a discharging port is formed in the lower portion of the side wall of the spiral filter, the feeding port is connected with the side wall of the filter screen, the discharging port is connected with the side wall of the spiral filter, and a slag discharging port is formed in the bottom of the spiral filter. And the slag discharge port is connected with the bottom of the filter screen. According to the utility model, icodextrin is filtered in a manner of combining the spiral filter and the plate-and-frame filter, so that large materials in the icodextrin can be separated, and relatively pure icodextrin is obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation devices, and in particular relates to an icodextrin separation and purification device. Background Art

[0002] Icodextrin is a new type of peritoneal dialysis API, mainly made of corn starch, which belongs to the polysaccharide class. Its production process generally includes starch gelatinization, degradation, refining and purification, drying and other processes. After gelatinization and degradation, a small amount of starch residue and macromolecular dextrin will remain, affecting the product quality. The prepared icodextrin products are often used in food processing, pharmaceutical production, peritoneal dialysis and other fields.

[0003] Therefore, the quality of icodextrin can affect the effect of the drug. When preparing icodextrin, there are certain requirements for the quality of icodextrin. At present, after icodextrin is prepared, it will be filtered by filtration and other methods. However, the current traditional process uses plate and frame to filter icodextrin. Due to the high viscosity of the icodextrin liquid, the direct plate and frame filtration efficiency is low, and the starch residues and large molecular icodextrin adsorbed on the plate and frame will block the small molecular icodextrin and reduce the concentration of icodextrin. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an icodextrin separation and purification device to improve the separation and purification efficiency of icodextrin and obtain a relatively pure icodextrin product.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The icodextrin separation and purification device described in the utility model comprises a storage tank, which is connected to a spiral filter, which is connected to a plate and frame filter, a central axis is arranged inside the spiral filter, the central axis passes through the top of the spiral filter and is connected to a motor, a feeding plate is spirally arranged on the central axis, a filter screen is arranged around the spiral filter, a feed port is arranged on the upper part of the side wall of the spiral filter, a discharge port is arranged on the lower part of the side wall of the spiral filter, the feed port is connected to the side wall of the filter screen, the discharge port is connected to the side wall of the spiral filter, a slag discharge port is arranged at the bottom of the spiral filter, and the slag discharge port is connected to the bottom of the filter screen.

[0007] in:

[0008] The filter screen is arranged in a barrel shape as a whole.

[0009] The filter screen is fixedly arranged on the inner wall of the spiral filter.

[0010] The length and transverse diameter of the filter screen are smaller than those of the spiral filter, and there is a space between the filter screen and the spiral filter.

[0011] The feed port and the slag discharge port both penetrate the spiral filter and extend to the inner side of the filter screen.

[0012] The discharge port is connected to the space between the filter screen and the spiral filter.

[0013] The storage tank is connected to the spiral filter through a pipeline, and a feed pump is arranged on the pipeline.

[0014] The spiral filter is connected to the plate-frame filter through a pipeline, and a second feed pump is arranged on the pipeline.

[0015] The discharge port of the spiral filter is connected to the feeding port of the plate-frame filter through a pipeline.

[0016] A filtrate port is arranged at the bottom of the plate-frame filter, and the filtrate port is connected to a filtrate tank through a pipeline.

[0017] The beneficial effects of the utility model are:

[0018] The utility model adopts a spiral filter and a plate-and-frame filter in combination to filter icodextrin, and can separate large materials in icodextrin to obtain relatively pure icodextrin; the spiral filter can intercept insoluble impurities such as starch in icodextrin, and the plate-and-frame filter can further filter impurities in icodextrin, at which time all excess granular impurities in icodextrin are separated, and the remaining icodextrin can be finely processed to improve separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] In the figure: 1. Storage tank; 2. Spiral filter; 3. Plate and frame filter; 4. Feed pump 1; 5. Feed pump 2; 6. Filtrate tank; 7. Motor;

[0021] 201, center axis; 202, feed plate; 203, filter screen; 204, feed inlet; 205, discharge port; 206, slag discharge port; 301, feed inlet; 302, filtrate port. DETAILED DESCRIPTION

[0022] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1As shown, the icodextrin separation and purification device described in the utility model includes a storage tank 1, the storage tank 1 is connected to a spiral filter 2, the spiral filter 2 is connected to a plate and frame filter 3, a central axis 201 is arranged inside the spiral filter 2, the central axis 201 passes through the top of the spiral filter 2 and is connected to a motor 7, a feed plate 202 is spirally arranged on the central axis 201, a filter screen 203 is arranged around the spiral filter 2, a feed port 204 is arranged on the upper part of the side wall of the spiral filter 2, a discharge port 205 is arranged on the lower part of the side wall of the spiral filter 2, the feed port 204 is connected to the side wall of the filter screen 203, the discharge port 205 is connected to the side wall of the spiral filter 2, a slag discharge port 206 is arranged at the bottom of the spiral filter 2, and the slag discharge port 206 is connected to the bottom of the filter screen 203.

[0025] The storage tank 1 can store crude icodextrin liquid, which can enter the filter screen 203 through the feed inlet 204 for filtration, and the residue after filtration is discharged through the slag discharge port 206. The icodextrin enters the plate-and-frame filter 3 through the discharge port 205 for plate-and-frame filtration, and the filtered icodextrin can be finely processed.

[0026] The filter screen 203 is configured in a barrel shape as a whole and can filter insoluble impurities and starch and other substances in the crude icodextrin solution.

[0027] The filter screen 203 is fixedly arranged on the inner wall of the spiral filter 2 .

[0028] The length and transverse diameter of the filter mesh 203 are smaller than those of the spiral filter 2 , and there is a space between the filter mesh 203 and the spiral filter 2 .

[0029] The feed inlet 204 and the slag outlet 206 both penetrate the spiral filter 2 and extend to the inner side of the filter screen 203. The crude icodextrin solution enters the filter screen 203 through the feed inlet 204, and is filtered. The remaining residue after filtration is discharged through the slag outlet 206.

[0030] The discharge port 205 is connected to the space between the filter screen 203 and the spiral filter 2 .

[0031] The storage tank 1 is connected to the spiral filter 2 through a pipeline, and a feed pump 4 is arranged on the pipeline.

[0032] The spiral filter 2 is connected to the plate-and-frame filter 3 through a pipeline, and a feed pump 5 is arranged on the pipeline.

[0033] The discharge port 205 of the spiral filter 2 is connected to the feed port 301 of the plate and frame filter 3 through a pipeline.

[0034] A filtrate port 302 is provided at the bottom of the plate-frame filter 3 , and the filtrate port 302 is connected to a filtrate tank 6 via a pipeline. The icodextrin filtered by the spiral filter 2 and the plate-frame filter 3 can be stored in the filtrate tank 6 .

[0035] Working principle and process:

[0036] The prepared icodextrin crude liquid is stored in the storage tank 1, and the icodextrin crude liquid is transported to the spiral filter 2 through the feeding pump 1 4. The motor 7 is started to make the central shaft 201 drive the feeding plate 202 to rotate. The icodextrin crude liquid is continuously filtered and descends through the feeding plate 202. During this process, the filter screen 203 can intercept particles with larger diameters. The remaining icodextrin solution enters the space between the filter screen 203 and the spiral filter 2, and is discharged through the discharge port 205. It is transported to the plate and frame filter 3 through the feeding pump 2 5. After filtering through the plate and frame filter 3, a relatively pure icodextrin product is obtained, which is convenient for subsequent fine processing.

Claims

1. An icodextrin separation and purification device, comprising a storage tank (1), characterized in that: The material storage tank (1) is connected to a spiral filter (2), and the spiral filter (2) is connected to a plate-and-frame filter (3). A central axis (201) is arranged inside the spiral filter (2), and the central axis (201) passes through the top of the spiral filter (2) and is connected to a motor (7). A feeding plate (202) is spirally arranged on the central axis (201), and a filter screen (203) is arranged around the spiral filter (2). A feed port (204) is arranged at the upper part of the side wall of the spiral filter (2), and a discharge port (205) is arranged at the lower part of the side wall of the spiral filter (2). The feed port (204) is connected to the side wall of the filter screen (203), and the discharge port (205) is connected to the side wall of the spiral filter (2). A slag discharge port (206) is arranged at the bottom of the spiral filter (2), and the slag discharge port (206) is connected to the bottom of the filter screen (203).

2. The icodextrin separation and purification device according to claim 1, characterized in that The filter screen (203) is arranged in a barrel shape as a whole.

3. The icodextrin separation and purification device according to claim 1, characterized in that The filter screen (203) is fixedly arranged on the inner wall of the spiral filter (2).

4. The icodextrin separation and purification device according to claim 1, characterized in that The length and transverse diameter of the filter screen (203) are both smaller than the length and transverse diameter of the spiral filter (2), and there is a space between the filter screen (203) and the spiral filter (2).

5. The icodextrin separation and purification device according to claim 1, characterized in that: The feed port (204) and the slag discharge port (206) both penetrate the spiral filter (2) and extend to the inner side of the filter screen (203).

6. The icodextrin separation and purification device according to claim 4, characterized in that: The discharge port (205) is in communication with the space between the filter screen (203) and the spiral filter (2).

7. The icodextrin separation and purification device according to claim 1, characterized in that: The material storage tank (1) is connected to the spiral filter (2) via a pipeline, and a material delivery pump (4) is provided on the pipeline.

8. The icodextrin separation and purification device according to claim 1, characterized in that: The spiral filter (2) is connected to the plate-and-frame filter (3) via a pipeline, and a second feed pump (5) is provided on the pipeline.

9. The icodextrin separation and purification device according to claim 1, characterized in that: The discharge port (205) of the spiral filter (2) is connected to the feed port (301) of the plate and frame filter (3) through a pipeline.

10. The icodextrin separation and purification device according to claim 1, characterized in that: A filtrate port (302) is provided at the bottom of the plate-and-frame filter (3), and the filtrate port (302) is connected to a filtrate tank (6) via a pipeline.

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