Separating and filtering device for dextran

Abstract

The utility model relates to the technical field of dextran extraction, in particular to a separating and filtering device for dextran, which comprises a filtering tank, a filtering mechanism for accelerating separation of dextran in a centrifugal mode is fixedly arranged in the filtering tank, and a flushing mechanism for cleaning residual impurities in the filtering mechanism is further fixedly arranged in the filtering tank. The flushing mechanism comprises a lifting driving assembly mounted at the top of the inner side of the filtering tank, the bottom of the lifting driving assembly is rotationally connected with a lifting rod, an annular pipe is fixedly arranged at the bottom of the lifting rod, a plurality of nozzles distributed at equal intervals are mounted on the outer wall of the annular pipe, the annular pipe is further connected with a water inlet pipe, and the water inlet pipe extends out of the filtering tank; according to the separating and filtering device for dextran, the inner wall of the separating net cylinder can be comprehensively washed, the problem that the filtering efficiency is affected due to blockage of the inner wall of the separating net cylinder can be avoided, filtrate can be centrifugally filtered, and the filtering efficiency of the filtrate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dextran extraction, in particular to a separation and filtration device for dextran. Background Art

[0002] Dextran is a widely used polysaccharide compound with excellent stability and viscosity reduction performance. In the production process, in order to improve the purity and quality of dextran, a separation and filtration device is required. However, after using the existing separation and filtration device for a period of time, the impurities left by the filtration will gradually adhere to the inner wall of the filter, causing blockage, resulting in reduced permeability of the filter, and then affecting the filtration efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a separation and filtration device for dextran, which solves the technical problem that the filter screen affects the filtration efficiency due to clogging after long-term use.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a separation and filtration device for dextran, comprising a filter tank, wherein a filter mechanism for accelerating the separation of dextran in a centrifugal manner is fixedly provided in the filter tank, and a flushing mechanism for cleaning residual impurities in the filter mechanism is also fixedly provided in the filter tank;

[0005] The flushing mechanism includes a lifting drive assembly installed on the top of the inner side of the filter tank. The bottom of the lifting drive assembly is rotatably connected to a lifting rod. An annular tube is fixed to the bottom of the lifting rod. A plurality of equally spaced nozzles are installed on the outer wall of the annular tube. The annular tube is also connected to a water inlet pipe, which extends to the outside of the filter tank.

[0006] Preferably, the filtering mechanism includes a fixed frame installed inside the filter tank, a motor 1 is installed at the bottom of the fixed frame, a gear is fixed on the output shaft of the motor 1, the gear is meshed with a gear ring, the gear ring is fixed on the top of the separation net cylinder, and the separation net cylinder is rotatably connected to the fixed frame.

[0007] Preferably, the bottom of the separation net cylinder is rotatably connected to a rotary joint, the bottom of the rotary joint is fixedly connected to a solenoid valve, the bottom of the solenoid valve is fixedly connected to a cleaning pipe, and the cleaning pipe extends along the side wall of the bottom discharge port of the filter tank.

[0008] Preferably, the lifting drive assembly includes a second motor installed on the top of the inner side of the filter tank, a rotating block is fixed on the output shaft of the second motor, the rotating block is hinged to the connecting block through a connecting rod, and the connecting block is rotatably connected to the top of the lifting rod.

[0009] Preferably, two sliders are fixed on the outer wall of the lifting rod, and the two sliders are respectively slidably set in two spiral guide grooves opened inside the guide sleeve. The guide sleeve is sleeved on the outside of the lifting rod and fixed on the fixed plate, and the fixed plate is fixed inside the filter tank.

[0010] Preferably, a feed pipe is also installed in the filter tank, and one end of the feed pipe is located above the separation net cylinder.

[0011] By means of the above technical solution, the utility model provides a separation and filtration device for dextran, which has at least the following beneficial effects:

[0012] 1. The separation and filtration device for dextran is provided with a flushing mechanism, utilizes the lifting drive assembly to work, and drives the annular tube and the nozzle to move up and down through the lifting rod. At the same time, under the action of the slider and the guide sleeve, the slider makes a spiral motion in the guide groove, so that the lifting rod can also rotate during the lifting process, so that the inner wall of the separation net cylinder can be fully flushed, and the problem of affecting the filtration efficiency due to the blockage of the inner wall of the separation net cylinder can be avoided.

[0013] 2. The separation and filtration device for dextran, by setting a filtration mechanism, uses a motor to work and drives the separation net cylinder to rotate through the meshing action of the gear and the gear ring, so that the filtrate can be centrifugally filtered, further improving the filtration efficiency of the filtrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure inside the filter tank of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the flushing mechanism of the utility model;

[0018] Figure 4 This is a schematic structural diagram of a cross-section of a guide sleeve of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the lifting rod of the utility model.

[0020] Reference numerals:

[0021] 1. Filter tank; 2. Filter mechanism; 21. Fixed frame; 22. Motor 1; 23. Gear; 24. Ring gear; 25. Separation net cylinder; 3. Rotary joint; 4. Solenoid valve; 5. Cleaning pipe; 6. Flushing mechanism; 61. Lifting drive assembly; 611. Motor 2; 612. Rotating block; 613. Connecting rod; 614. Connecting block; 62. Lifting rod; 63. Sliding block; 64. Guide sleeve; 641. Guide groove; 65. Fixed plate; 66. Ring pipe; 67. Nozzle; 68. Water inlet pipe; 7. Feed pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Dextran is a polysaccharide composed of glucose units, which is right-handed. The glucose units in its chemical structure are connected by α-1,4-bonds. Dextran has many excellent properties, such as good water solubility, strong heat resistance, excellent viscosity reduction performance, etc. It is widely used in the food industry, chemical industry and pharmaceutical field. Separation and filtration is an important link in the production process of dextran, mainly based on the following purposes: 1. Improve product purity: Dextran is a high molecular compound, and other impurities are often present in the production process. Separation and filtration can effectively remove these impurities and improve the purity of the product. 2. Remove free glucose: In the preparation process of dextran, free glucose and other monosaccharides may appear. These monosaccharides may affect the quality of the product and need to be removed by separation and filtration. 3. Concentration and dehydration: In the production process of dextran, the water in the solution needs to be evaporated or concentrated. Separation and filtration equipment can help achieve these operations. 4. Remove residual fermentation substances and microorganisms: During the dextran fermentation production process, there will be residual fermentation substances and microorganisms that need to be removed. Separation and filtration can effectively remove these substances.

[0024] Embodiment 1:

[0025] Based on the technical defects of the existing technology that the filter screen is blocked after long-term use, which affects the filtration efficiency, please refer to Figure 1-Figure 5The utility model provides a separation and filtration device for dextran, which can comprehensively flush the inner wall of the separation net cylinder 25, thereby avoiding the problem of affecting the filtration efficiency due to clogging of the inner wall of the separation net cylinder 25. A filtering mechanism 2 for accelerating the separation of dextran in a centrifugal manner is fixed in the filter tank 1, and a flushing mechanism 6 for cleaning the residual impurities in the filtering mechanism 2 is also fixed in the filter tank 1; the solution is discharged into the filtering mechanism 2 through the feed pipe 7, and the solution is centrifugally filtered by the operation of the filtering mechanism 2. After the solution is filtered, the separation net cylinder 25 in the filtering mechanism 2 is flushed by the flushing mechanism 6 to remove the attached impurities.

[0026] To facilitate the cleaning of impurities attached to the inner wall of the separation net cylinder 25, please refer to Figure 3 The flushing mechanism 6 includes a lifting drive assembly 61 installed on the top of the inner side of the filter tank 1, and the bottom of the lifting drive assembly 61 is rotatably connected to a lifting rod 62. A ring tube 66 is fixedly arranged at the bottom of the lifting rod 62, and a plurality of equally distributed nozzles 67 are installed on the outer wall of the ring tube 66. The ring tube 66 is also connected to a water inlet pipe 68, and the water inlet pipe 68 extends to the outside of the filter tank 1. The lifting drive assembly 61 works and drives the lifting rod 62 to move, and the lifting rod 62 drives the ring tube 66 and the nozzle 67 to move, so that the inner wall of the separation net cylinder 25 can be flushed.

[0027] To enable the nozzle 67 to reciprocate and lift, please refer to Figure 3 The lifting drive assembly 61 includes a second motor 611 installed on the top of the inner side of the filter tank 1. A rotating block 612 is fixedly arranged on the output shaft of the second motor 611. The rotating block 612 is hinged to the connecting block 614 through a connecting rod 613. The connecting block 614 is rotatably connected to the top of the lifting rod 62. The second motor 611 can drive the rotating block 612 to rotate, and the rotating block 612 can drive the lifting rod 62 to reciprocate and lift through the connecting rod 613.

[0028] In order to enable the lifting rod 62 to drive the nozzle 67 to rotate while it is lifting and lowering, two sliders 63 are fixed on the outer wall of the lifting rod 62, and the two sliders 63 are respectively slidably set in two spiral guide grooves 641 opened inside the guide sleeve 64. The guide sleeve 64 is sleeved on the outer side of the lifting rod 62 and fixedly connected to the fixed plate 65, and the fixed plate 65 is fixedly connected to the inside of the filter tank 1; when the lifting rod 62 is lifted and lowered, the slider 63 can move along the guide groove 641 inside the guide sleeve 64. Since the guide groove 641 is spiral, the slider 63 can drive the lifting rod 62 to rotate, so that the nozzle 67 can more comprehensively rinse the separation net cylinder 25.

[0029] For the convenience of feeding, a feeding pipe 7 is installed in the filter tank 1, and one end of the feeding pipe 7 is located above the separation net cylinder 25; the solution can be put into the separation net cylinder 25 through the feeding pipe 7 to perform separation and filtration.

[0030] Embodiment 2:

[0031] When filtering a solution, it relies only on its own gravity. This filtering method has a low filtering efficiency. To improve the filtering efficiency, please refer to Figure 2 On the basis of the first embodiment, the filtering mechanism 2 includes a fixing frame 21 installed inside the filtering tank 1, a motor 22 is installed at the bottom of the fixing frame 21, a gear 23 is fixed on the output shaft of the motor 22, the gear 23 is meshed with a gear ring 24, the gear ring 24 is fixed on the top of the separation net cylinder 25, and the separation net cylinder 25 is rotatably connected to the fixing frame 21; the motor 22 is operated and the separation net cylinder 25 is driven to rotate through the meshing action of the gear 23 and the gear ring 24, so that the solution generates a centrifugal effect in the separation net cylinder 25, so that the solution can pass through the separation net cylinder 25 faster, thereby achieving a more efficient filtering purpose.

[0032] In order to facilitate the discharge of the flushed impurities, a rotary joint 3 is rotatably connected to the bottom of the separation net cylinder 25, a solenoid valve 4 is fixedly connected to the bottom of the rotary joint 3, a cleaning pipe 5 is fixedly connected to the bottom of the solenoid valve 4, and the cleaning pipe 5 extends along the side wall of the bottom discharge port of the filter tank 1; under the action of the rotary joint 3, the separation net cylinder 25 can rotate normally, and when discharging impurities, the solenoid valve 4 is opened, and the impurities can be discharged along the cleaning pipe 5 after passing through the rotary joint 3.

[0033] Through the above embodiment, it can be known that: the solution is discharged into the filter mechanism 2 through the feed pipe 7, the filter mechanism 2 is started, the motor 1 22 is used to work and the separation net cylinder 25 is driven to rotate through the meshing action of the gear 23 and the ring gear 24, so that the solution produces a centrifugal effect in the separation net cylinder 25, so that the solution can pass through the separation net cylinder 25 faster, and after the solution is filtered, the flushing mechanism 6 is started to run, and the motor 2 611 is used to drive the rotating block 612 to rotate, and the rotating block 612 drives the lifting rod 62 to reciprocate and lift through the connecting rod 613, and the lifting rod 62 drives The annular tube 66 and the nozzle 67 move to flush the inner wall of the separation net tube 25. At the same time, when the lifting rod 62 moves up and down, the slider 63 can move along the guide groove 641 inside the guide sleeve 64. Since the guide groove 641 is spiral, the slider 63 can drive the lifting rod 62 to rotate, so that the nozzle 67 can flush the separation net tube 25 more comprehensively. Under the action of the rotary joint 3, the separation net tube 25 can rotate normally. When discharging impurities, the solenoid valve 4 is opened, and the impurities can be discharged along the cleaning pipe 5 after passing through the rotary joint 3.

[0034] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation and filtration device for dextran, comprising a filter tank (1), characterized in that: The filter tank (1) is provided with a filter mechanism (2) for accelerating the separation of dextran in a centrifugal manner, and the filter tank (1) is also provided with a flushing mechanism (6) for cleaning residual impurities inside the filter mechanism (2); The flushing mechanism (6) comprises a lifting drive assembly (61) mounted on the top of the inner side of the filter tank (1); the bottom of the lifting drive assembly (61) is rotatably connected to a lifting rod (62); an annular tube (66) is fixedly arranged at the bottom of the lifting rod (62); a plurality of equidistantly distributed nozzles (67) are mounted on the outer wall of the annular tube (66); the annular tube (66) is also connected to a water inlet pipe (68); and the water inlet pipe (68) extends to the outside of the filter tank (1).

2. The separation and filtration device for dextran according to claim 1, characterized in that: The filtering mechanism (2) comprises a fixing frame (21) installed inside the filtering tank (1), a motor (22) is installed at the bottom of the fixing frame (21), a gear (23) is fixedly arranged on the output shaft of the motor (22), the gear (23) is meshed with a gear ring (24), the gear ring (24) is fixedly arranged on the top of a separation net cylinder (25), and the separation net cylinder (25) is rotatably connected to the fixing frame (21).

3. The separation and filtration device for dextran according to claim 2, characterized in that: The bottom of the separation net cylinder (25) is rotatably connected to a rotary joint (3), the bottom of the rotary joint (3) is fixedly connected to a solenoid valve (4), the bottom of the solenoid valve (4) is fixedly connected to a sewage cleaning pipe (5), and the sewage cleaning pipe (5) extends along the side wall of the bottom discharge port of the filter tank (1).

4. The separation and filtration device for dextran according to claim 1, characterized in that: The lifting drive assembly (61) comprises a second motor (611) mounted on the top of the inner side of the filter tank (1); a rotating block (612) is fixedly provided on the output shaft of the second motor (611); the rotating block (612) is hingedly connected to a connecting block (614) via a connecting rod (613); and the connecting block (614) is rotatably connected to the top of the lifting rod (62).

5. The separation and filtration device for dextran according to claim 1, characterized in that: Two sliders (63) are fixedly provided on the outer wall of the lifting rod (62). The two sliders (63) are respectively slidably arranged in two spiral guide grooves (641) provided inside a guide sleeve (64). The guide sleeve (64) is sleeved on the outer side of the lifting rod (62) and fixedly connected to a fixing plate (65). The fixing plate (65) is fixedly connected to the inside of the filter tank (1).

6. The separation and filtration device for dextran according to claim 2, characterized in that: A feed pipe (7) is also installed in the filter tank (1), and one end of the feed pipe (7) is located above the separation net cylinder (25).

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