Filtering and impurity removing device for rhamnose preparation

Abstract

The utility model discloses a filtering and impurity removing device for preparing rhamnose, and relates to the technical field of chemical substance processing. The device comprises a base, a primary filter box and a fine filter tank, two groups of filter assemblies distributed up and down are arranged in the primary filter box, each filter assembly comprises a filter frame obliquely fixed on the inner wall of the primary filter box and a corrugated filter screen fixed in the inner cavity of the filter frame, a filter membrane I is fixed at the bottom of a filter ring I, and a filter membrane II is fixed at the bottom of a filter ring II; an air extractor is fixed on the periphery of the fine filtering tank; and an air extraction branch pipe I and an air extraction branch pipe II are fixed at the air extraction end of the air extractor. By arranging the primary filtering box, the filtering assembly, the fine filtering tank, the air exhauster, the first filtering membrane, the second filtering membrane, the tank cover and the flow guide table, the problems that under the multiple filtering conditions of primary filtering, consumables are increased, and the filtering effect is poor are solved; and under the condition of fine filtration, the negative pressure suction filtration efficiency cannot be improved, and the introduced filtrate is easy to impact a filter membrane to cause damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical substance processing, in particular to a filtering and impurity removal device for preparing rhamnose. Background Art

[0002] Rhamnose, 6-deoxy-L-mannose, is widely found in polysaccharides, glycosides, plant gums and bacterial polysaccharides of plants. Its sweetness is 33% of sucrose, and it can be used to measure the permeability of the intestine, can be used as a sweetener, and can also be used to produce flavors and fragrances, and is edible. In the preparation process of rhamnose, rutin is often used as a raw material. For example, rutin can be hydrolyzed in dilute H2S04 to obtain a mixture of rhamnose and glucose and quercetin. According to literature reports, rhamnose was extracted from its hydrolyzate by crystallization. The existing process has been improved, but most of its preparation steps cannot lack the filtration process, such as filtration and impurity removal of the hydrolyzate, filtration and impurity removal of the fermentation liquid, filtration and impurity removal of the detection liquid, etc., which all require the use of relevant filtration and impurity removal devices, but conventional filtration and impurity removal devices still have the following disadvantages in actual use:

[0003] 1. Filtration usually refers to the process of solid-liquid separation. Filtration removes impurities to obtain clean filtrate, or filtration obtains crystals. However, in order to meet work needs, the filtration and impurity removal device needs to remove impurities as much as possible, which even requires multiple filtration components to assist the operation, which leads to an increase in consumables and maintenance costs. Therefore, it is necessary to increase the filtration effect while saving costs as much as possible;

[0004] 2. Secondly, when performing microfiltration, normal pressure filtration will be very slow, which will increase the filtration time and reduce the efficiency. Therefore, the current technology mostly uses negative pressure filtration and other operations. However, under conditions that require multiple filtrations, it is impossible to further increase the filtration efficiency, and the introduced filtrate can easily impact the filter membrane and cause damage. Utility Model Content

[0005] The utility model aims to provide a filtering and impurity removal device for preparing rhamnose, which solves the problems of increased consumables and poor filtering effect under multiple filtering conditions of primary filtration by arranging a primary filter box and a filtering assembly; and solves the problems of the inability to improve the negative pressure filtration efficiency and the easy impact of the filter membrane by the introduced filtrate and causing damage under the conditions of fine filtration by arranging a fine filtration tank, a vacuum pump, a filter membrane one, a filter membrane two, a tank cover and a flow guide table.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a filtering and impurity removal device for preparing rhamnose, comprising a base, a primary filter box and a fine filter tank, wherein the primary filter box and the fine filter tank are arranged on the base;

[0008] Two groups of filter components distributed up and down are arranged in the primary filter box, each of the filter components includes a filter frame obliquely fixed on the inner wall of the primary filter box, and a corrugated filter screen fixed in the inner cavity of the filter frame, and a corresponding shaft rod is also fixed in the filter frame under each crest of the corrugated filter screen;

[0009] The fine filter tank is lower than the height of the primary filter box, and a tank cover is screwed onto the upper end of the fine filter tank. A filter ring 1 and a filter ring 2 are fixed on the inner wall of the fine filter tank, which are distributed from top to bottom. A filter membrane 1 is fixed at the bottom of the filter ring 1, and a filter membrane 2 is fixed at the bottom of the filter ring 2.

[0010] A vacuum pump is fixed on the outer periphery of the fine filter tank, and an outlet pipe at the outlet end of the vacuum pump penetrates the tank cover and extends into the fine filter tank. A vacuum branch pipe 1 and a vacuum branch pipe 2 are fixed to the vacuum end of the vacuum pump, and an end of the vacuum branch pipe 1 away from the vacuum pump penetrates the side wall of the fine filter tank between filter membrane 1 and filter membrane 2, and an end of the vacuum branch pipe 2 away from the vacuum pump penetrates the side wall of the fine filter tank below filter membrane 2.

[0011] Furthermore, an opening is provided on the side wall of the primary filter box near the lower end of the filter assembly, a slag discharge bucket is fixed on the outer wall of the primary filter box outside the opening, and a socket is provided at a position of the slag discharge bucket near the opening, and a sealing plate larger than the opening size is inserted into the socket.

[0012] Furthermore, a drainage hopper is fixed through the bottom of the primary filter box, a bracket is also fixed to the outside of the primary filter box above the drainage hopper, and the bottom of the bracket is fixed on the base.

[0013] Furthermore, a connecting pipe is fixedly passed through the center of the tank cover, and one end of the connecting pipe away from the tank cover is connected to the bottom of the drain bucket, a control valve is fixed on the connecting pipe, and a pressure relief valve is also fixed on the tank cover.

[0014] Furthermore, a guide platform is provided in the fine filter tank above the filter ring, and the bottom circumference of the guide platform is fixed to the inner wall of the fine filter tank through a connecting block. The guide platform is conical, and the end of the connecting pipe fixed in the tank cover faces the topmost point of the guide platform.

[0015] Furthermore, a drain pipe with a valve is fixed through the center of the bottom of the fine filter tank, and legs distributed in a circular array are fixed to the bottom of the fine filter tank outside the drain pipe, and the legs are fixed above the base.

[0016] Furthermore, the pore size of the filter membrane 2 is smaller than the pore size of the filter membrane 1, and the pore size of the corrugated filter in the filter assembly below is smaller than the pore size of the corrugated filter in the filter assembly above it.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model solves the problems of increased consumables and poor filtering effect under multiple filtering conditions of primary filtration by setting a primary filter box and a filter assembly; the two filter assemblies are installed obliquely in the primary filter box to facilitate the filtrate to flow along its inclined surface for faster filtering, and secondly, a corrugated filter screen is used as the filter material in the filter assembly. When the filtrate flows on it, it can contact more area, thereby increasing the filtering area as much as possible within a limited space, avoiding the problem of insufficient filtering area at large flow rates, and at the same time reducing consumables and increasing the filtering effect.

[0019] 2. The utility model solves the problem that the negative pressure filtration efficiency cannot be improved under the condition of fine filtration and the introduced filtrate can easily impact the filter membrane and cause damage by arranging a fine filtration tank, an air pump, filter membrane one, filter membrane two, a tank cover and a guide table; when performing fine filtration, the filtrate enters the fine filtration tank, is slowed down by the guide table, flows down along the inner wall of the fine filtration tank, and is successively finely filtered through filter membrane one and filter membrane two, and the air between filter membrane one and filter membrane two and in the space below filter membrane two is extracted by the air pump to form a negative pressure, and is transported to the space above filter membrane one to form a pressurization effect, thereby accelerating the filtration speed, and performing pressurized filtration and negative pressure filtration simultaneously. Moreover, since the space between filter membrane one and filter membrane two is larger than the space below filter membrane two, the negative pressure in the space below filter membrane two is greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0021] Figure 1 A three-dimensional diagram of a filtering and impurity removal device for preparing rhamnose;

[0022] Figure 2 A bottom view of a filtering and impurity removal device for preparing rhamnose;

[0023] Figure 3 is a cross-sectional view of the primary filter box;

[0024] Figure 4 is a cross-sectional view of a filter assembly;

[0025] Figure 5 A cross-sectional view of the fine filter tank.

[0026] Reference numerals:

[0027] 1. Base; 2. Primary filter box; 201. Filter assembly; 2011. Filter frame; 2012. Corrugated filter screen; 2013. Shaft; 202. Slag bucket; 2021. Socket; 203. Sealing plate; 204. Bracket; 205. Drain bucket; 3. Fine filter tank; 301. Tank cover; 3011. Pressure relief valve; 3012. Connecting pipe; 3013. Control valve; 302. Vacuum pump; 3021. Exhaust pipe; 3022. Vacuum branch pipe 1; 3023. Vacuum branch pipe 2; 303. Support leg; 304. Drain pipe; 305. Guide platform; 3051. Connecting block; 306. Filter ring 1; 3061. Filter membrane 1; 307. Filter ring 2; 3071. Filter membrane 2. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1-5 As shown, the utility model is a filtering and impurity removal device for preparing rhamnose, comprising a base 1, a primary filter box 2 and a fine filter tank 3, wherein the primary filter box 2 and the fine filter tank 3 are arranged on the base 1;

[0030] The primary filter box 2 is used for preliminary coarse filtration, and the fine filter tank 3 is used for secondary fine filtration, using a microporous filtration method;

[0031] Two groups of filter components 201 distributed up and down are arranged in the primary filter box 2, and each filter component 201 includes a filter frame 2011 obliquely fixed on the inner wall of the primary filter box 2, and a corrugated filter screen 2012 fixed in the inner cavity of the filter frame 2011, and a corresponding shaft rod 2013 is also fixed in the filter frame 2011 under each wave crest of the corrugated filter screen 2012;

[0032] The filter assembly 201 is used for coarse filtering to filter out larger impurities. It uses an inclined filter frame 2011 to be fixed in the primary filter box 2, and is equipped with a corrugated filter screen 2012 to increase the filtering area and speed up the filtering process. The corresponding shaft rod 2013 is used to stably support the corrugated filter screen 2012.

[0033] The fine filter tank 3 is lower than the height of the primary filter box 2, and a tank cover 301 is screwed on the upper end of the fine filter tank 3. A filter ring 1 306 and a filter ring 2 307 are fixed on the inner wall of the fine filter tank 3 from top to bottom. A filter membrane 1 3061 is fixed at the bottom of the filter ring 1 306, and a filter membrane 2 3071 is fixed at the bottom of the filter ring 2 307.

[0034] During the filtering operation, the tank cover 301 is closed, and the filtrate enters the fine filtering tank 3, and is filtered step by step by the filter membrane 1 3061 and the filter membrane 2 3071. The filter membrane 1 3061 and the filter membrane 2 3071 are both microporous filter membranes.

[0035] An air pump 302 is fixed on the outer periphery of the fine filter tank 3, and an air outlet pipe 3021 at the air outlet end of the air pump 302 penetrates the tank cover 301 and extends into the fine filter tank 3. An air suction branch pipe 1 3022 and an air suction branch pipe 2 3023 are fixed to the air suction end of the air pump 302, and an end of the air suction branch pipe 1 3022 away from the air pump 302 penetrates the side wall of the fine filter tank 3 between the filter membrane 1 3061 and the filter membrane 2 3071, and an end of the air suction branch pipe 2 3023 away from the air pump 302 penetrates the side wall of the fine filter tank 3 below the filter membrane 2 3071;

[0036] By utilizing the operation of the vacuum pump 302, the air in the fine filter tank 3 between the filter membrane 1 3061 and the filter membrane 2 3071 is extracted through the suction branch pipe 1 3022 to form a negative pressure, and at the same time, the air inside the fine filter tank 3 below the filter membrane 2 3071 is extracted through the suction branch pipe 2 3023 to form a negative pressure, and the suction branch pipe 1 3022 and the suction branch pipe 2 3023 work synchronously, and because the space between the filter membrane 1 3061 and the filter membrane 2 3071 is larger than the space below the filter membrane 2 3071, the negative pressure in the space below the filter membrane 2 3071 is greater (for example, if a point negative pressure is formed between the filter membrane 1 3061 and the filter membrane 2 3071, two point negative pressures will be formed below the filter membrane 2 3071), thereby forming a step-by-step negative pressure filtration effect; at the same time, the extracted air is input into the fine filter tank 3 above the filter membrane 1 3061 through the air outlet pipe 3021, achieving a pressurization effect, forming a pressurized filtration process.

[0037] An opening is provided on the side wall of the primary filter box 2 near the lower end of the filter assembly 201, and a slag discharge bucket 202 is fixed on the outer wall of the primary filter box 2 outside the opening, and a socket 2021 is provided near the opening of the slag discharge bucket 202, and a sealing plate 203 larger than the opening size is inserted into the socket 2021;

[0038] After the sealing plate 203 is opened, the impurities filtered out from the filter assembly 201 can be discharged from the opening and the impurities can be discharged using the slag discharge bucket 202 .

[0039] A liquid drain hopper 205 is fixed through the bottom of the primary filter box 2 , and a bracket 204 is also fixed to the outer side of the primary filter box 2 above the liquid drain hopper 205 , and the bottom of the bracket 204 is fixed on the base 1 .

[0040] A connecting pipe 3012 is fixed through the center of the tank cover 301, and one end of the connecting pipe 3012 away from the tank cover 301 is connected to the bottom of the drain hopper 205, a control valve 3013 is fixed on the connecting pipe 3012, and a pressure relief valve 3011 is also fixed on the tank cover 301;

[0041] Open the control valve 3013, and the filtrate filtered out of the primary filter box 2 will be input into the fine filter tank 3 through the connecting pipe 3012. Under normal working conditions, the control valve 3013 is closed, and the primary filter box 2 and the fine filter tank 3 can work independently. When the fine filter tank 3 needs to be cleaned and drained, the pressure relief valve 3011 can be opened to relieve pressure.

[0042] A guide platform 305 is also provided in the fine filter tank 3 above the filter ring 1 306, and the bottom circumference of the guide platform 305 is fixed to the inner wall of the fine filter tank 3 through a connecting block 3051. The guide platform 305 is conical, and the end of the connecting pipe 3012 fixed in the tank cover 301 faces the top of the guide platform 305;

[0043] When the connecting pipe 3012 inputs the filtrate, it will be guided to the guide platform 305, and the filtrate will flow down along the side of the guide platform 305, and finally flow down through the guide platform 305 and the inner wall of the fine filter tank 3, thereby alleviating the impact of feeding.

[0044] A drain pipe 304 with a valve is fixed through the center of the bottom of the fine filter tank 3, and legs 303 distributed in a circular array are also fixed to the bottom of the fine filter tank 3 outside the drain pipe 304, and the legs 303 are fixed above the base 1; when the filtrate filtered by the filter membrane 1 3061 and the filter membrane 2 3071 is finally discharged, the valve on the drain pipe 304 can be opened.

[0045] The pore size of filter membrane 2 3071 is smaller than that of filter membrane 1 3061, and the pore size of the corrugated filter 2012 in the filter component 201 below is smaller than the pore size of the corrugated filter 2012 in the filter component 201 above it, thereby achieving step-by-step filtration and increasing the filtration accuracy in turn.

[0046] The specific working principle of the utility model is as follows: first, the filtrate to be filtered is input into the primary filter box 2 and enters the filter assembly 201. The two filter assemblies 201 are both installed obliquely in the primary filter box 2, and the filtrate flows along its inclined surface for faster filtering. Secondly, the filter assembly 201 adopts a corrugated filter screen 2012 as the filter material. When the filtrate flows on it, it can contact more areas and increase the filtering area as much as possible within the limited space. After the filtration is completed, the filtrate is temporarily stored in the drain hopper 205. At this time, the sealing plate 203 can be opened, and the impurities filtered out from the filter assembly 201 can be discharged from the opening, and the impurities can be discharged using the slag discharge hopper 202. Open the control valve 3013, and the filtrate temporarily stored in the drain hopper 205 will be input into the fine filter tank 3 through the connecting pipe 3012. When the connecting pipe 3012 inputs the filtrate, it will be guided to the guide table 30 5, the filtrate flows down along the side of the guide platform 305, and finally flows down between the guide platform 305 and the inner wall of the fine filter tank 3, and then the filtrate is filtered by the filter membrane 1 3061 and the filter membrane 2 3071. During this process, the vacuum pump 302 works to extract the air in the fine filter tank 3 between the filter membrane 1 3061 and the filter membrane 2 3071 through the suction branch pipe 1 3022 to form a negative pressure, and at the same time, the air inside the fine filter tank 3 below the filter membrane 2 3071 is extracted through the suction branch pipe 2 3023 to form a negative pressure, thereby forming a step-by-step negative pressure filtration effect; at the same time, the extracted air is input into the fine filter tank 3 above the filter membrane 1 3061 through the outlet pipe 3021 to achieve a pressurization effect and form a pressurized filtration process; after the filtration in the fine filter tank 3 is completed, the pressure is released by opening the pressure relief valve 3011, and the valve on the discharge pipe 304 is opened to discharge the filtered filtrate.

[0047] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A filtering and impurity removal device for preparing rhamnose, comprising a base (1), a primary filter box (2) and a fine filter tank (3), characterized in that: The base (1) is provided with a primary filter box (2) and a fine filter tank (3); Two groups of filter components (201) distributed up and down are arranged in the primary filter box (2), and each of the filter components (201) comprises a filter frame (2011) fixed obliquely on the inner wall of the primary filter box (2), and a corrugated filter screen (2012) fixed in the inner cavity of the filter frame (211), and a corresponding shaft rod (2013) is also fixed in the filter frame (2011) under each wave crest of the corrugated filter screen (2012); The fine filter tank (3) is lower than the height of the primary filter box (2), and a tank cover (301) is screwed onto the upper end of the fine filter tank (3). A filter ring 1 (306) and a filter ring 2 (307) are fixed on the inner wall of the fine filter tank (3) and are distributed from top to bottom. A filter membrane 1 (3061) is fixed at the bottom of the filter ring 1 (306), and a filter membrane 2 (3071) is fixed at the bottom of the filter ring 2 (307); An air pump (302) is fixed on the outer periphery of the fine filter tank (3); an air outlet pipe (3021) at the air outlet end of the air pump (302) penetrates the tank cover (301) and extends into the fine filter tank (3); an air pump branch pipe 1 (3022) and an air pump branch pipe 2 (3023) are fixed to the air pump end of the air pump (302); an end of the air pump branch pipe 1 (3022) away from the air pump (302) penetrates the side wall of the fine filter tank (3) between the first filter membrane (3061) and the second filter membrane (3071); an end of the air pump branch pipe 2 (3023) away from the air pump (302) penetrates the side wall of the fine filter tank (3) below the second filter membrane (3071).

2. The filtering and impurity removal device for preparing rhamnose according to claim 1, characterized in that: An opening is provided on the side wall of the primary filter box (2) near the lower end of the filter assembly (201); a slag discharge bucket (202) is fixed on the outer wall of the primary filter box (2) outside the opening; and a socket (2021) is provided at a position of the slag discharge bucket (202) near the opening; a sealing plate (203) larger than the size of the opening is inserted into the socket (2021).

3. The filtering and impurity removal device for preparing rhamnose according to claim 1, characterized in that: A liquid drain hopper (205) is fixedly connected to the bottom of the primary filter box (2), and a bracket (204) is also fixedly connected to the outer side of the primary filter box (2) above the liquid drain hopper (205), and the bottom of the bracket (204) is fixedly connected to the base (1).

4. The filtering and impurity removal device for preparing rhamnose according to claim 3, characterized in that: A connecting pipe (3012) is fixedly passed through the center of the tank cover (301), and one end of the connecting pipe (3012) away from the tank cover (301) is connected to the bottom of the liquid discharge bucket (205). A control valve (3013) is fixed on the connecting pipe (3012), and a pressure relief valve (3011) is also fixed on the tank cover (301).

5. The filtering and impurity removal device for preparing rhamnose according to claim 4, characterized in that: A guide platform (305) is also provided in the fine filter tank (3) above the filter ring 1 (306), and the bottom circumference of the guide platform (305) is fixed to the inner wall of the fine filter tank (3) via a connecting block (3051); the guide platform (305) is conical, and the end of the connecting pipe (3012) fixed in the tank cover (301) faces the topmost point of the guide platform (305).

6. The filtering and impurity removal device for preparing rhamnose according to claim 1, characterized in that: A drain pipe (304) with a valve is fixedly passed through the center of the bottom of the fine filter tank (3), and legs (303) distributed in a circular array are also fixedly disposed at the bottom of the fine filter tank (3) outside the drain pipe (304), and the legs (303) are fixed above the base (1).

7. The filtering and impurity removal device for preparing rhamnose according to claim 1, characterized in that: The pore size of the filter membrane 2 (3071) is smaller than the pore size of the filter membrane 1 (3061), and the pore size of the corrugated filter screen (2012) in the filter assembly (201) below is smaller than the pore size of the corrugated filter screen (2012) in the filter assembly (201) above it.

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