Filter pressing tank for producing bacterial nano cellulose

Abstract

The utility model relates to the field of filter pressing tanks, in particular to a filter pressing tank for producing bacterial nanocellulose, which comprises a tank body, a feeding pipe is communicated with the upper part of the tank body, and a discharging pipe is communicated with the discharging end of the feeding pipe; by arranging the laying assembly, when a worker puts cellulose into the tank body for filter pressing treatment, the cellulose can be thrown out towards the edge part of a filter screen through holes in the middle of a dispersion plate and close to the outer side, and meanwhile the cellulose can be thrown into a center screen through cooperation with the holes in the middle; the cellulose is scattered to the middle of the filter screen through holes of the central sieve, so that the effect of uniformly distributing the cellulose is achieved, and the subsequent filter pressing effect can be effectively improved; by arranging the discharging pipe and the guide strip in the discharging pipe, cellulose can spirally fall down during discharging, and the conical part of the dispersing plate is matched, so that materials can be uniformly distributed to the surface of the dispersing plate, and the space utilization rate of the dispersing plate and the distribution uniformity of the cellulose are improved.

Description

Technical Field

[0001] This utility model relates to the field of filter presses, and in particular to a filter press for the production of bacterial nanocellulose. Background Technology

[0002] A filter press is a mechanical device that uses a special filter medium to apply pressure to a material, causing the liquid to seep out. It is a commonly used solid-liquid separation device.

[0003] A search revealed the Chinese patent "A Cellulose Filter Press" (authorization announcement number CN213321866U). This utility model relates to the technical field of cellulose production, specifically to a cellulose filter press that loosens and agitates cellulose, allowing steam to fully contact and filter the cellulose, thus improving the filtration effect and practicality. The press includes a base, an upper tank, a lower tank, a support frame, support leg assemblies, a filter screen, a feed pipe, a drain pipe, and an air inlet pipe. An upper flange is connected to the bottom of the upper tank, and a lower flange is connected to the top of the lower tank. The upper flange and lower flange are bolted together to form a sealed working chamber. The filter screen is horizontally fixed to the inner wall of the lower tank. The press also includes a motor, a drive shaft, and multiple sets of stirring rods. The motor's output end is connected to the drive shaft, which extends into the cavity of the upper tank. Multiple sets of stirring rods, each equipped with a stirring hammer, are mounted on the drive shaft inside the upper tank.

[0004] Although the aforementioned filter press is equipped with a motor, drive shaft, stirring rod, and stirring hammer to loosen the cellulose and facilitate full contact between steam and cellulose, the stirring hammer moves around the outer periphery of the filter screen along the trajectory of the stirring rod. As a result, the cellulose in the middle is separated from the cellulose on the periphery, leading to uneven distribution of cellulose and affecting the subsequent steam filtration effect.

[0005] Therefore, a filter press for the production of bacterial nanocellulose is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a filter press for the production of bacterial nanocellulose in order to solve the above-mentioned problems, thereby improving the problem that the cellulose in the filter press cannot be evenly and flatly spread on the surface of the filter screen, which affects the subsequent filtration effect.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a filter press for the production of bacterial nanocellulose, comprising: a tank body, an inlet pipe connected to the top of the tank body, a discharge pipe connected to the outlet end of the inlet pipe, and a filter screen provided at the bottom of the tank body;

[0008] A laying assembly, wherein the laying assembly is disposed in the tank;

[0009] The laying component includes a dispersing plate disposed in the tank. The surface of the dispersing plate has dispersing holes. The dispersing holes are arranged in a rectangular array of several groups, and each group of dispersing holes consists of five holes. The five holes of the dispersing holes face different directions. A central sieve is disposed below the dispersing plate.

[0010] Preferably, the laying assembly further includes a motor fixedly connected to the top of the tank. The output end of the motor extends into the tank and is fixedly connected to a transmission rod. The lower end of the transmission rod is fixedly connected to the dispersing plate. The motor, in conjunction with the transmission rod, enables the dispersing plate to rotate and uses centrifugal force to evenly throw the cellulose onto the filter screen surface, thereby improving the uniformity of cellulose distribution.

[0011] Preferably, the central sieve and the dispersing plate are on the same axis, and the two innermost holes of the five holes in the dispersing plate are located in the central sieve. As described above, some cellulose can be thrown into the central sieve, and the holes of the central sieve can be used to make the cellulose fall to the middle of the filter screen on its own.

[0012] Preferably, the surface of the central screen is provided with a connecting rod, wherein the side of the connecting rod near the inner wall of the tank is fixedly connected to the inner wall of the tank.

[0013] Preferably, the discharge pipe has three sets of guide strips arranged in a ring array. The guide strips are spirally arranged so that the cellulose can fall spirally onto the surface of the dispersion plate, thereby improving the uniformity of cellulose distribution.

[0014] Preferably, the upper part of the dispersing plate is conical, and the upper part of the conical part of the dispersing plate corresponds to the discharge pipe.

[0015] Preferably, the five holes of the dispersion plate are oriented from the inside out as inner, vertical, and outer, respectively.

[0016] The beneficial effects of this utility model are:

[0017] By setting up the laying components, when personnel put cellulose into the tank for pressure filtration, the holes in the middle and outer sides of the dispersion plate can be used to throw the cellulose towards the edge of the filter screen. At the same time, the holes in the middle can be used to throw the cellulose into the central screen, and the holes in the central screen can be used to scatter the cellulose into the middle of the filter screen, achieving a uniform distribution of cellulose and effectively improving the subsequent pressure filtration effect.

[0018] By setting up a discharge pipe and its internal guide strips, the cellulose can fall in a spiral when being discharged. Combined with the conical part of the dispersing plate, the material can be evenly distributed on the surface of the dispersing plate, improving the space utilization of the dispersing plate and the uniformity of cellulose distribution. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the internal structure of the tank body of this utility model;

[0021] Figure 3 This is a schematic diagram of the laying component of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the discharge pipe of this utility model.

[0023] Figure 5 This is a schematic diagram showing the orientation of the holes in the dispersion plate of this utility model.

[0024] In the diagram: 1. Tank body; 2. Laying assembly; 201. Motor; 202. Drive rod; 203. Dispersion plate; 204. Dispersion hole; 205. Central screen; 3. Feed pipe; 4. Discharge pipe; 5. Filter screen; 6. Guide bar. 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] In practical implementation: such as Figure 1-5 As shown, a filter press for producing bacterial nanocellulose includes: a tank body 1, an inlet pipe 3 connected to the top of the tank body 1, a discharge pipe 4 connected to the outlet end of the inlet pipe 3, and a filter screen 5 installed at the bottom of the tank body 1; and a laying assembly 2 installed in the tank body 1.

[0027] The principle of steam pressure filtration of cellulose is as follows: First, the cellulose suspension enters the filter press tank and undergoes preliminary filtration through a specially designed filter medium, such as filter cloth or filter screen. During this process, steam is introduced into certain parts of the filter press tank. The heating effect of the steam raises the temperature inside the tank, and the pressure generated by the steam acts directly on the water in the suspension, helping the liquid to separate through the filter screen. The solid cellulose is intercepted on the surface of the filter screen, forming a filter cake. The continuous heating of the steam causes the water in the filter cake to evaporate further or be squeezed out, thereby achieving the effect of pressure filtration.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the laying component 2 includes a dispersing plate 203 disposed in the tank 1. The surface of the dispersing plate 203 is provided with dispersing holes 204. The dispersing holes 204 are arranged in a rectangular array of several groups, and each group of dispersing holes 204 consists of five holes. The five holes of the dispersing holes 204 have different orientations. A central sieve 205 is disposed below the dispersing plate 203. The laying component 2 also includes a motor 201 fixedly connected to the top of the tank 1. The output end of the motor 201 passes through the tank 1 and is fixedly connected to a transmission rod 202. The lower end of the transmission rod 202 is fixedly connected to the dispersing plate 203. The five holes of the dispersing plate 203 are arranged from the inside out as the inside, vertical and the outside respectively.

[0029] First, cellulose is poured into the feed pipe 3. Then, the output end of the motor 201 drives the dispersing plate 203 to rotate through the transmission rod 202. Then, the discharge pipe 4 causes the cellulose to spiral down and fall onto the conical surface of the dispersing plate 203. Then, it is dispersed by centrifugal force to the dispersing holes 204 of the dispersing plate 203. At this time, the middle and outer holes can disperse the cellulose to the periphery of the filter screen 5 below, while the two inner holes can throw the cellulose into the central screen 205. Since the central screen 205 does not rotate with the dispersing plate 203, the cellulose thrown into the central screen 205 falls through the holes of the central screen 205 to the middle of the filter screen 5, so that the cellulose is evenly spread on the surface of the filter screen 5.

[0030] It should be noted that when the motor 201 is turned on to rotate the dispersing plate 203, the rotation speed should not be too fast. Because cellulose contains moisture, if the motor 201 rotates too fast, the cellulose falling onto the surface of the dispersing plate 203 will easily be thrown to the edge of the dispersing plate 203 by centrifugal force, thus preventing the cellulose from entering the inner dispersing holes 204. Therefore, the motor 201 only needs to drive the dispersing plate 203 to rotate slowly, keeping the cellulose evenly distributed in each row of dispersing holes 204, and using centrifugal force and the self-settling effect of the cellulose to allow the cellulose to enter the dispersing holes 204.

[0031] The central sieve 205 and the dispersing plate 203 are on the same axis, and the two innermost holes of the five holes in the dispersing plate 203 are located in the central sieve 205; the surface of the central sieve 205 is provided with a connecting rod, wherein the side of the connecting rod near the inner wall of the tank 1 is fixedly connected to the inner wall of the tank 1.

[0032] It should be noted that the central sieve 205 is located below the dispersing plate 203. Three connecting rods are provided on the surface of the central sieve 205, and all three connecting rods are fixedly connected to the inner wall of the tank 1. Therefore, the central sieve 205 does not rotate with the dispersing plate 203. When distributing cellulose, the two innermost dispersing holes 204 will throw the cellulose into the central sieve 205. Since the central sieve 205 has holes with a diameter larger than that of the filter screen 5 at the bottom, the cellulose entering the central sieve 205 will fall through these holes to the middle of the filter screen 5 to fill the missing part in the middle of the filter screen 5. Together with the other three dispersing holes 204, the cellulose is dispersed to the outer surface of the filter screen 5, thus achieving the effect of uniformly distributing the cellulose.

[0033] Three sets of guide bars 6 are arranged in a ring array in the discharge pipe 4, and the guide bars 6 are arranged in a spiral; the upper part of the dispersing plate 203 is conical, and the upper part of the conical part of the dispersing plate 203 corresponds to the discharge pipe 4.

[0034] Working principle: When the operator needs to filter cellulose, the cellulose is first poured into the feed pipe 3. Then, the motor 201 is turned on, and the output end of the motor 201 drives the dispersing plate 203 to rotate through the transmission rod 202. At this time, the feed pipe 3 discharges the cellulose into the discharge pipe 4. The guide bar 6 in the discharge pipe 4 enables the cellulose to spiral down and fall onto the conical surface of the dispersing plate 203. Then, it is dispersed by centrifugal force to the dispersing holes 204 of the dispersing plate 203. With different orientations, the central and outer holes can disperse the cellulose to the periphery of the lower filter screen 5, while the two inner holes can throw the cellulose into the central screen 205. Since the central screen 205 does not rotate with the dispersing plate 203, the cellulose thrown into the central screen 205 will fall through the holes of the central screen 205 to the center of the filter screen 5, so that the cellulose is evenly spread on the surface of the filter screen 5. Then, the operator can open the external air inlet pipe to inject steam into the tank 1 and use the steam to pressurize and filter the cellulose.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter press for producing bacterial nanocellulose, characterized in that, include: The tank (1) has an inlet pipe (3) connected to the top of the tank (1), and a discharge pipe (4) connected to the outlet end of the inlet pipe (3). A filter screen (5) is provided at the bottom of the tank (1). Laying component (2), said laying component (2) is disposed in tank body (1); The laying component (2) includes a dispersing plate (203) disposed in the tank (1). The surface of the dispersing plate (203) is provided with dispersing holes (204). The dispersing holes (204) are arranged in a rectangular array of several groups. Each group of dispersing holes (204) consists of five holes. The five holes of the dispersing holes (204) are oriented differently. A central sieve (205) is disposed below the dispersing plate (203).

2. The filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The laying assembly (2) also includes a motor (201) fixedly connected to the top of the tank (1). The output end of the motor (201) extends into the tank (1) and is fixedly connected to a transmission rod (202). The lower end of the transmission rod (202) is fixedly connected to the dispersing plate (203).

3. The filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The central sieve (205) and the dispersing plate (203) are on the same axis, and the two innermost holes of the five holes of the dispersing plate (203) are located in the central sieve (205).

4. A filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The surface of the central sieve (205) is provided with a connecting rod, wherein the side of the connecting rod near the inner wall of the tank (1) is fixedly connected to the inner wall of the tank (1).

5. A filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The discharge pipe (4) has three sets of guide bars (6) arranged in a ring array, and the guide bars (6) are arranged in a spiral.

6. A filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The upper part of the dispersing plate (203) is conical, and the upper part of the conical part of the dispersing plate (203) corresponds to the discharge pipe (4).

7. A filter press for producing bacterial nanocellulose according to claim 1, characterized in that: The five holes of the dispersion plate (203) are arranged from the inside out as the inside, vertical and the outside respectively.

Images