Suction filtration device for nano cellulose production

Abstract

The utility model discloses a suction filtration device for nanocellulose production, which relates to the technical field of purification and collection equipment and comprises a suction filtration tank, the suction filtration tank comprises a tank body, a filter plate is transversely arranged in the middle of the tank body, a discharge layer is arranged above the filter plate, and a waste liquid layer is arranged below the filter plate; filter cloth is arranged on the filter plate; the middle part of the waste liquid layer is communicated with one end of the vacuum pipe and one end of the emptying pipe, and the lower part of the waste liquid layer is communicated with one end of the waste liquid pipe. Soluble impurities can be removed by adopting a suction filtration manner of the suction filtration tank, and the purity of the nanocellulose is improved; and the filter plate and the filter cloth can efficiently remove impurities and reduce material loss. The mode that the multiple suction filtration tanks are connected in parallel is adopted, integrated production and integrated control can be achieved, discharging and suction filtration can be conducted through the multiple tanks at the same time, and the production efficiency is improved. Negative pressure is formed through the vacuum pump, so that the suction filtration efficiency is improved, and high-solid-content nano cellulose can be treated. The pressure of the suction filtration tank is adjusted through the pressure controller, so that the controllable degree is improved, and stable production of nanocellulose is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to purification collection equipment technical field, especially a kind of suction filtration device for nanocellulose production. BACKGROUND

[0002] Roughly processed cellulose, nanocellulose is treated by acid and alkali, and subsequent treatment cannot be carried out when PH is higher or lower, and other chemical component impurities are contained, and it needs to be purified by extracting acid, alkali and salt.

[0003] Nanocellulose field usually uses filter bag filtering mode, nanocellulose is loaded into filter bag, and purification is carried out using filter bag hole. Filter bag filtering needs manual assistance, and processing capacity is limited, and efficiency is low. Only large size impurities can be removed, and soluble impurities cannot be removed, high purity requirement cannot be met, high solid content material cannot be handled, and material is easy to be lost.

[0004] Other fields, such as food, chemical industry and the like, use single suction filtration tank, and filtering (suction filtration) is carried out using gravity, and its efficiency is low, suction filtration time is long, control degree is low, and overall state is unstable. UTILITY MODEL CONTENT

[0005] To solve the problems existing in the prior art, the utility model aims at providing a suction filtration device for nanocellulose production, to solve the problem that nanocellulose is difficult to remove impurities and difficult to improve purity.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0007] The utility model provides a suction filtration device for nanocellulose production, including suction filtration tank, the suction filtration tank includes tank body, the middle part of the tank body is transversely provided with filter plate, the filter plate upper side is the material layer, and the filter plate lower side is waste liquid layer;Filter cloth is arranged on the filter plate;The material layer is connected with one end of material pipe and deionized water pipe, the middle part of the waste liquid layer is connected with one end of vacuum pipe and emptying pipe, and the lower part of the waste liquid layer is connected with one end of waste liquid pipe.

[0008] Optionally, a plurality of through holes are arranged on the filter plate.

[0009] Optionally, the bottom of the tank body is provided with a base.

[0010] Optionally, the top of the tank body is provided with a tank edge, and the tank edge is used to be connected with the cover plate.

[0011] Optionally, the other end of the material pipe is connected with a material barrel.

[0012] Optionally, the other end of the deionized water pipe is provided with a 1 micron filter.

[0013] Optionally, the other end of the vacuum pipe is connected with a vacuum device.

[0014] Optionally, the vacuum device comprises a pressure gauge, a vacuum pump and a pressure controller; the air inlet end of the vacuum pump is connected with the other end of the vacuum pipe, the pressure gauge is arranged on the vacuum pipe; and the pressure controller is electrically connected with the vacuum pump.

[0015] Optionally, the other end of the waste liquid pipe is connected with a waste liquid barrel.

[0016] Optionally, the material pipe, the deionized water pipe, the vacuum pipe and the waste liquid pipe are respectively connected with a plurality of the suction filtration tanks through communication branch pipes.

[0017] The utility model discloses relative to prior art has obtained following technical effect:

[0018] The utility model discloses nanocellulose production uses suction filtration device, adopts the way of suction filtration tank suction filtration to remove soluble impurity, improves nanocellulose purity, filter plate, filter cloth can remove impurity efficiently, reduces material loss. Adopt the way of multiple suction filtration tank parallel, collectivization production, can collectivization control, multiple tank simultaneously discharges, suction filtration, improves production efficiency. Use vacuum pump to form negative pressure and carry out suction filtration, improves suction filtration efficiency, reduces production time, can handle high solid content nanocellulose. Through pressure gauge, monitor suction filtration pressure, reduce pressure abnormal phenomenon. Use pressure controller and automatically regulate suction filtration tank pressure condition, maintain pressure level, can automatically regulated and improved controllable degree, guarantees nanocellulose production stability. The 1 micrometer filter of deionized water pipe can reduce the introduction of impurities, and the 1 micrometer filter can intercept particles greater than 1 micrometer. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Fig. 1 It is a structure schematic view of the suction filtration tank in the suction filtration device for nanocellulose production in the utility model.

[0021] Fig. 2 It is a side structure schematic view of the suction filtration tank in the suction filtration device for nanocellulose production in the utility model.

[0022] Fig. 3 It is a structure schematic view of the suction filtration device for nanocellulose production in the utility model.

[0023] MARKS OF THE DRAWINGS:

[0024] 1. Tank rim; 2. Feeding layer; 3. Filter plate; 4. Waste liquid layer; 5. Base; 6. Material pipe; 7. Deionized water pipe; 8. Vacuum pipe; 9. Drain pipe; 10. Waste liquid pipe; 11. Vacuum filtration tank; 12. Material bucket; 13. Filter; 14. Waste liquid bucket; 15. Pressure gauge; 16. Vacuum pump; 17. Pressure controller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] When deionized water is added to nanocellulose material, the soluble impurities in the material dissolve in the deionized water. Under the action of a vacuum pump, air is drawn from the filtrate layer of the filtration tank to form a negative pressure. There is a pressure difference between the two ends of the filter cloth, and the material cannot pass through the micropores of the filter cloth and remains in the material layer. The waste liquid passes through the filter cloth and enters the filtrate layer through the pores of the filter plate under negative pressure. Meanwhile, the nanocellulose material removes impurities such as acids, alkalis, and salts, thus achieving the purpose of purification.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figs. 1 to 3 As shown, this embodiment provides a filtration device for the production of nanocellulose, including a filtration tank 11. The filtration tank 11 includes a tank body, a filter plate 3 is horizontally arranged in the middle of the tank body, a material discharge layer 2 is above the filter plate 3, and a waste liquid layer 4 is below the filter plate 3. A filter cloth is arranged on the filter plate 3. The material discharge layer 2 is connected to one end of the material pipe 6 and the deionized water pipe 7. The middle part of the waste liquid layer 4 is connected to one end of the vacuum pipe 8 and the drain pipe 9. The lower part of the waste liquid layer 4 is connected to one end of the waste liquid pipe 10.

[0029] The top of the filtration tank 11 is open, and a groove 1 is provided on the top edge. A plastic plate can be provided as a cover to cover the filtration tank 11 and prevent foreign objects from falling in.

[0030] The filter tank 11 can be made of polypropylene or other acid and alkali resistant, high-strength materials.

[0031] The filter plate 3 has many macroscopic circular holes, while the filter cloth has microscopic pores. The filter cloth material can be polypropylene or other acid and alkali resistant filter cloths.

[0032] The bottom of the groove body is provided with a base 5. The length, width and height of the groove body are in the ratio of 4:2:1. In this embodiment, the length of the groove body is 2 meters, the width is 1 meter, and the height is 0.55 meters. The ratio of the base 5, the filtrate layer and the material discharge layer 2 is 1:5:3. The thickness of the filter plate 3 is 3 centimeters.

[0033] In other embodiments, the shape of the groove body is not limited, and the suction filter groove 11 can also be cylindrical or other shapes.

[0034] In this embodiment, the other end of the material pipe 6 is connected to the material bucket 12. The other end of the deionized water pipe 7 is provided with a micron pipe 13. In this embodiment, the filter 13 can be a micron pipe composed of a 1-micron folded filter element. The other end of the waste liquid pipe 10 is connected to the waste liquid bucket 14. The end of the material pipe 6 close to the suction filter groove 11 is provided with a suction filter groove material pipe valve, and the end of the material pipe 6 close to the material bucket 12 is provided with a material pipe valve. The end of the deionized water pipe 7 close to the suction filter groove 11 is provided with a suction filter groove deionized water pipe valve, and the end of the deionized water pipe 7 located at the water inlet end of the micron pipe 13 is provided with a deionized water pipe valve. The waste liquid pipe 10 and the waste liquid bucket 14 are provided with a waste liquid pipe valve.

[0035] The other end of the vacuum pipe 8 is connected to a vacuum device. The vacuum device includes a pressure gauge 15, a vacuum pump 16 and a pressure controller 17. The air inlet end of the vacuum pump 16 is connected to the other end of the vacuum pipe 8, and the pressure gauge 15 is arranged on the vacuum pipe 8. The pressure controller 17 is electrically connected to the vacuum pump 16. The vacuum pipe valve is arranged between the pressure gauge 15 and the vacuum pump 16.

[0036] The use process of the suction filter groove in this embodiment is as follows:

[0037] The prepared material is placed in the material bucket 12, the material pipe valve, the suction filter groove material pipe valve and the suction filter groove emptying pipe are opened, the material is allowed to enter the suction filter groove 11, and after the material is placed, the valves are closed; the deionized water pipe valve and the suction filter groove deionized water pipe valve are opened, and after a proper amount of deionized water is added, the valves are closed; the pressure controller 17 is set to the required negative pressure, the vacuum pipe valve, the waste liquid pipe valve and the vacuum pump 16 are opened, the cover plate covers the suction filter groove 11 to start suction filtering, the filtrate layer forms a negative pressure to wash the material with deionized water, and then the deionized water passes through the filter cloth and enters the waste liquid layer 4 through the filter plate holes, after the suction filtering is completed, the valves are closed, the waste liquid pipe valve is opened, the waste liquid is discharged into the waste liquid bucket 14, and the process of adding water, suction filtering and discharging waste liquid is repeated, and the suction filtering is repeated until the nanocellulose material reaches the ideal state.

[0038] In other embodiments, in order to improve production efficiency and realize collective production, collective control can be realized. The material pipe 6, the deionized water pipe 7, the vacuum pipe 8 and the waste liquid pipe 10 are respectively connected to multiple suction filter grooves 11 through communication branch pipes. Multiple suction filter grooves 11 simultaneously place materials and suction filter.

[0039] It should be noted that, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] The principles and implementation modes of the present application are described in the specification by applying specific examples, the above embodiment description is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in specific implementation modes and application scope. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A suction filtration device for nanocellulose production, characterized by The application relates to a filter tank, which comprises a tank body, a filter plate arranged in the middle of the tank body, a material layer above the filter plate, a waste liquid layer below the filter plate, filter cloth arranged on the filter plate, a material pipe and a deionized water pipe connected with one end of the material layer, a vacuum pipe and a vacuum discharge pipe connected with one end of the middle part of the waste liquid layer, and a waste liquid pipe connected with one end of the lower part of the waste liquid layer.

2. The nanocellulose production suction filtration device according to claim 1, characterized in that, A plurality of through holes are arranged on the filter plate.

3. The nanocellulose production suction filtration device according to claim 1, characterized in that, A base is arranged at the bottom of the tank body.

4. The nanocellulose production suction filtration device according to claim 1, characterized by A tank edge is arranged at the top of the tank body, and the tank edge is used for connecting with a cover plate.

5. The nanocellulose production suction filtration device according to claim 1, characterized in that, The other end of the material pipe is connected with a material barrel.

6. The nanocellulose production suction filtration device according to claim 1, characterized by The other end of the deionized water pipe is provided with a 1-micron filter.

7. The nanocellulose production suction filtration device according to claim 1, characterized by The other end of the vacuum pipe is connected with a vacuum device.

8. The nanocellulose production suction filtration device according to claim 7, characterized by The vacuum device comprises a pressure gauge, a vacuum pump and a pressure controller; the air inlet end of the vacuum pump is connected with the other end of the vacuum pipe, the pressure gauge is arranged on the vacuum pipe, and the pressure controller is electrically connected with the vacuum pump.

9. The nanocellulose production suction filtration device according to claim 1, characterized by The other end of the waste liquid pipe is connected with a waste liquid barrel.

10. The nanocellulose production suction filtration device according to claim 1, characterized in that, The material pipe, the deionized water pipe, the vacuum pipe and the waste liquid pipe are respectively connected with a plurality of filter tanks through communication branch pipes.

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