A membrane separation device

Abstract

The utility model relates to the field of membrane separation technology, specifically a membrane separation device, including a separation device body, the separation device body includes support legs, the bottom surface of the shell is fixedly connected with four support legs, the top surface of the shell is provided with two feed ports, and the bottom surface of the shell is provided with a discharge port. In the utility model, through the coordination of the servo motor, the transmission shaft, the pulley, the tubular separation membrane 1, the rotating ring, the spiral blades, the gear, the gear ring 1, the tubular separation membrane 2, the circular tube and the gear ring 2, the spiral blades can make the mixture fully contact with the two membrane surfaces, thereby improving the separation efficiency. By arranging spray pipes inside the tubular separation membrane 2 and between the tubular separation membrane 1 and the shell, a plurality of nozzles are fixed at equal angles on the side walls of the two spray pipes, the top ends of the two spray pipes are connected with water inlet pipes, and the other end of the water inlet pipes is connected with a water pump, so that the device can implement a self-cleaning function, thereby reducing the labor intensity of the workers.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane separation, in particular to a membrane separation device. Background Art

[0002] In the acetate production process, the recovered glacial acetic acid and the recovered single alcohol or mixed alcohol such as methanol, ethanol, isopropanol, butanol, ethyl acetate and alcohol mixture are added to a reactor, a catalyst is added, and the temperature is raised to carry out an esterification reaction to obtain a crude ester. Then, the crude ester is introduced into a membrane separation system, and the selective permeability of the membrane is used to remove water and other impurities to obtain a refined acetate. Finally, the refined acetate is sent to a distillation kettle for distillation treatment to further improve the purity and quality of the product and obtain a high-purity acetate product.

[0003] However, the existing membrane separation devices have certain drawbacks when in use. For example, the separation efficiency needs to be improved, and the feed liquid may contain some substances that easily form deposits on the membrane surface when the membrane separation device is in use. The manual cleaning process requires disassembly and assembly, which is troublesome, and the cleaning effect is poor, which can easily lead to blockage of the separation membrane. Utility Model Content

[0004] The purpose of the utility model is to provide a membrane separation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A membrane separation device comprises a separation device body, the separation device body comprises a shell, the bottom surface of the shell is fixedly connected to four supporting legs, the top surface of the shell is provided with two feed ports, the bottom surface of the shell is provided with a discharge port, the inner wall of the discharge port is connected to a discharge pipe, the discharge pipe is installed with a solenoid valve, and the interior of the shell is rotatably connected to a separation mechanism.

[0007] Furthermore, a motor seat is fixedly connected to the side wall of the shell near the top surface, a servo motor is fixedly connected to the top surface of the motor seat, and a motor shaft of the servo motor is transmission-connected to a transmission shaft.

[0008] Furthermore, the separation mechanism includes a tubular separation membrane 2, the bottom end of the tubular separation membrane 2 is rotatably connected to the inner bottom surface of the shell, the top surface of the tubular separation membrane 2 is fixedly connected to a round tube, a pulley is transmission-connected between the round tube and the transmission shaft, a gear ring 2 is sleeved and fixed on the outer wall of the tubular separation membrane 2, and the outer wall of the tubular separation membrane 2 is rotatably connected to a rotating ring.

[0009] Furthermore, the top surface of the rotating ring is fixedly connected with a gear ring 1, the outer wall of the gear ring 1 is sleeved and fixed with a tubular separation membrane 1, and the top surface of the tubular separation membrane 1 is rotatably connected to the inner top surface of the shell.

[0010] Furthermore, two circular holes are symmetrically provided on the top surface of the rotating ring, the inner walls of the two circular holes are fixedly connected with feed pipes, the outer walls of the two feed pipes are sleeved and fixed with gears, and the gears are meshed with the first gear ring and the second gear ring for transmission.

[0011] Furthermore, a spiral blade is fixedly connected to the bottom surface of the rotating ring, and four round rods are fixedly penetrated at equal angles on the top surface of the spiral blade, and the four round rods extend from the head to the tail of the spiral blade.

[0012] Furthermore, spray pipes are arranged inside the tubular separation membrane 2 and between the tubular separation membrane 1 and the shell, the bottom ends of the two spray pipes are fixedly connected to the inner bottom surface of the shell, a number of nozzles are fixed at equal angles on the side walls of the two spray pipes, the top ends of the two spray pipes are connected to water inlet pipes, and the other ends of the water inlet pipes are connected to a water pump.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the coordination and arrangement among the servo motor, the transmission shaft, the pulley, the tubular separation membrane 1, the rotating ring, the spiral blade, the feed pipe, the gear, the gear ring 1, the tubular separation membrane 2, the round tube and the gear ring 2, the motor shaft driving the servo motor is transmitted to the transmission shaft, so that the tubular separation membrane 1 and the tubular separation membrane 2 can rotate in opposite directions to each other, and the rotating spiral blade can transport the mixture from top to bottom, so that the mixture can fully contact the surface of the tubular separation membrane 1 and the tubular separation membrane 2, thereby improving the separation efficiency.

[0015] 2. Spray pipes are arranged inside the tubular separation membrane 2 and between the tubular separation membrane 1 and the shell, and a plurality of nozzles are fixed at equal angles on the side walls of the two spray pipes. The top ends of the two spray pipes are connected to water inlet pipes, and the other ends of the water inlet pipes are connected to a water pump, so that the motor shaft of the servo motor is driven to the transmission shaft to rotate the tubular separation membrane 1 and the tubular separation membrane 2, and the water pump is started to transport clean water to the two spray pipes through the two water inlet pipes respectively. The clean water will be sprayed from the ends of the plurality of nozzles under the pressure of the water pump to wash the retained substances attached to the surfaces of the tubular separation membrane 1 and the tubular separation membrane 2, so that the device can implement a self-cleaning function and reduce the labor intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1-2 This is a schematic diagram of the overall structure of a membrane separation device of the utility model;

[0017] Figure 3It is a schematic diagram of the internal structure of the shell in the utility model;

[0018] Figure 4 This is a schematic diagram of the second cross-sectional structure of the tubular separation membrane of the utility model;

[0019] Figure 5 This is a schematic diagram of the disassembly of the tubular separation membrane and its related structures in the utility model;

[0020] Figure 6 It is an enlarged schematic diagram of the structure of area A in the utility model.

[0021] In the figure: 100, separation device body; 110, shell; 111, support leg; 112, discharge pipe; 113, solenoid valve; 114, motor seat; 120, servo motor; 121, transmission shaft; 122, pulley; 130, spray pipe; 131, water inlet pipe; 132, nozzle; 200, separation mechanism; 210, tubular separation membrane 1; 211, rotating ring; 212, spiral blade; 213, round rod; 214, feed pipe; 215, gear; 216, gear ring 1; 220, tubular separation membrane 2; 221, round tube; 222, gear ring 2. 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] See also Figures 1 to 6 In an embodiment of the utility model, a membrane separation device includes a separation device body 100, and the separation device body 100 includes a shell 110, and four supporting legs 111 are fixedly connected to the bottom surface of the shell 110, and two feed ports are provided on the top surface of the shell 110, and a discharge port is provided on the bottom surface of the shell 110. The inner wall of the discharge port is connected to a discharge pipe 112, and a solenoid valve 113 is installed on the discharge pipe 112. The shell 110 is internally rotatably connected to a separation mechanism 200.

[0024] Specifically, the crude ester obtained by esterification reaction of recovered glacial acetic acid and recovered single alcohol or mixed alcohol such as methanol, ethanol, isopropanol, butanol, ethyl acetate and alcohol mixture is fed into the shell 110 from two feed ports, and the separation mechanism 200 is started to separate them. After the separation is completed, the solenoid valve 113 is opened to allow the substance that passes through the membrane during separation (hereinafter referred to as permeate) to be drawn out from the discharge pipe 112 for subsequent use.

[0025] Embodiment 1

[0026] like Figure 2-4 and Figure 6 As shown, in this embodiment, the separation mechanism 200 includes a tubular separation membrane 220, the bottom end of the tubular separation membrane 220 is rotatably connected to the inner bottom surface of the shell 110, the top surface of the tubular separation membrane 220 is fixedly connected with a round tube 221, the round tube 221 and the transmission shaft 121 are transmission-connected with a pulley 122, the outer wall of the tubular separation membrane 220 is sleeved and fixed with a gear ring 222, the outer wall of the tubular separation membrane 220 is rotatably connected with a rotating ring 211, the top surface of the rotating ring 211 is fixedly connected with a gear ring 1 216, and the outer wall of the gear ring 1 216 is sleeved and fixed with a tubular separation membrane. Separation membrane 210, the top surface of the tubular separation membrane 210 is rotatably connected to the inner top surface of the shell 110, and two circular holes are symmetrically opened on the top surface of the rotating ring 211. The inner walls of the two circular holes are fixedly connected with feed pipes 214, and the outer walls of the two feed pipes 214 are sleeved and fixed with gears 215. The gear 215 and the ring gear 1 216 and the ring gear 2 22 are meshed for transmission. The side wall of the shell 110 close to the top surface is fixedly connected to the motor base 114, and the top surface of the motor base 114 is fixedly connected to the servo motor 120, and the motor shaft of the servo motor 120 is transmission-connected to the transmission shaft 121.

[0027] In this embodiment, the mixture is fed into the space between the tubular separation membrane 1 210 and the tubular separation membrane 2 220 through the two feed pipes 214, and the motor shaft of the servo motor 120 is driven to the transmission shaft 121. The round tube 221 drives the tubular separation membrane 2 220 to rotate under the drive of the pulley 122. When the tubular separation membrane 2 20 rotates, the gear ring 222 and the two gears 215 are meshed for transmission, and the gears 215 and the rotating ring 211 are meshed for transmission, so that the tubular separation membrane 1 210 and the tubular separation membrane 2 20 are meshed for transmission. 0 rotate in opposite directions to each other, so that the mixture contacts the surface of the tubular separation membrane 1 210 and the tubular separation membrane 2 220 under the action of centrifugal force, and passes through the separation action of the tubular separation membrane 1 210 and the tubular separation membrane 2 220. The substances that cannot pass through the tubular separation membrane 1 210 or the tubular separation membrane 2 220 are retained on one side of the membrane (hereinafter referred to as the retained substances), while the permeates pass through the tubular separation membrane 1 210 and the tubular separation membrane 2 220 and gather at the bottom of the shell 110 and are discharged from the discharge pipe 112, thereby improving the separation efficiency.

[0028] like Figure 5 As shown, in this embodiment, the bottom surface of the rotating ring 211 is fixedly connected with a spiral blade 212 , and the top surface of the spiral blade 212 is fixed with four round rods 213 passing through at equal angles, and the four round rods 213 extend from the head to the tail of the spiral blade 212 .

[0029] During specific implementation, since the spiral blade 212 is just between the tubular separation membrane 1 210 and the tubular separation membrane 2 220, when the mixture falls onto the spiral blade 212 from the feed pipe 214, the spiral blade 212 rotates with the rotating ring 211 to convey the mixture from top to bottom, so that the mixture can fully contact the surfaces of the tubular separation membrane 1 210 and the tubular separation membrane 2 220, thereby improving the separation efficiency. Four round rods 213 are provided, and each round rod 213 extends from the head to the tail of the spiral blade 212 body to form a fixed connection with the spiral blade 212, thereby ensuring the stability and reliability of the spiral blade 212.

[0030] Embodiment 2

[0031] like Figure 3-4 As shown, in this embodiment, spray pipes 130 are provided inside the tubular separation membrane 220 and between the tubular separation membrane 1 210 and the shell 110, the bottom ends of the two spray pipes 130 are fixedly connected to the inner bottom surface of the shell 110, a plurality of nozzles 132 are fixed at equal angles on the side walls of the two spray pipes 130, the top ends of the two spray pipes 130 are connected to the water inlet pipe 131, and the other ends of the water inlet pipe 131 are connected to the water pump.

[0032] In specific implementation, after the mixture is separated by the tubular separation membrane 1 210 and the tubular separation membrane 2 220, the permeate can be directly drawn out from the discharge pipe 112, while the retained matter will adhere to the surface of the tubular separation membrane 1 210 and the tubular separation membrane 2 220. The water pump is started to transport clean water to the two spray pipes 130 through the two water inlet pipes 131 respectively. The clean water will be sprayed from the ends of several nozzles 132 under the pressure of the water pump. The sprayed clean water will flush the retained matter attached to the surface of the tubular separation membrane 1 210 and the tubular separation membrane 2 220. At the same time, the motor shaft of the servo motor 120 is driven to the transmission shaft 121 to rotate the tubular separation membrane 1 210 and the tubular separation membrane 2 220, so that the clean water can fully flush the surface of the tubular separation membrane 1 210 and the tubular separation membrane 2 220 to avoid blind spots. The retained matter flushed down can be discharged from the discharge pipe 112.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A membrane separation device, characterized in that: The invention comprises a separation device body (100), wherein the separation device body (100) comprises a shell (110), the bottom surface of the shell (110) is fixedly connected with four supporting legs (111), the top surface of the shell (110) is provided with two feed ports, the bottom surface of the shell (110) is provided with a discharge port, the inner wall of the discharge port is connected with a discharge pipe (112), the discharge pipe (112) is installed with a solenoid valve (113), and the interior of the shell (110) is rotatably connected with a separation mechanism (200).

2. A membrane separation device according to claim 1, characterized in that: A motor seat (114) is fixedly connected to a side wall of the housing (110) close to the top surface, a servo motor (120) is fixedly connected to the top surface of the motor seat (114), and a motor shaft of the servo motor (120) is drivingly connected to a transmission shaft (121).

3. A membrane separation device according to claim 1, characterized in that: The separation mechanism (200) comprises a second tubular separation membrane (220), the bottom end of the second tubular separation membrane (220) being rotatably connected to the inner bottom surface of the shell (110), the top surface of the second tubular separation membrane (220) being fixedly connected to a circular tube (221), a pulley (122) being transmission-connected between the circular tube (221) and the transmission shaft (121), a second gear ring (222) being sleeved and fixedly mounted on the outer wall of the second tubular separation membrane (220), and a rotating ring (211) being rotatably connected to the outer wall of the second tubular separation membrane (220).

4. A membrane separation device according to claim 3, characterized in that: The top surface of the rotating ring (211) is fixedly connected to a gear ring 1 (216), the outer wall of the gear ring 1 (216) is sleeved and fixed with a tubular separation membrane 1 (210), and the top surface of the tubular separation membrane 1 (210) is rotatably connected to the inner top surface of the shell (110).

5. A membrane separation device according to claim 3, characterized in that: Two circular holes are symmetrically formed on the top surface of the rotating ring (211); the inner walls of the two circular holes are fixedly connected with a feed pipe (214); the outer walls of the two feed pipes (214) are sleeved and fixed with a gear (215); the gear (215) is meshed with a first gear ring (216) and a second gear ring (222) for transmission.

6. A membrane separation device according to claim 3, characterized in that: The bottom surface of the rotating ring (211) is fixedly connected with a spiral blade (212), and the top surface of the spiral blade (212) is fixedly penetrated with four round rods (213) at equal angles, and the four round rods (213) extend from the head to the tail of the spiral blade (212).

7. A membrane separation device according to claim 3, characterized in that: Spray pipes (130) are arranged inside the tubular separation membrane 2 (220) and between the tubular separation membrane 1 (210) and the shell (110); the bottom ends of the two spray pipes (130) are fixedly connected to the inner bottom surface of the shell (110); a plurality of nozzles (132) are fixed at equal angles on the side walls of the two spray pipes (130); the top ends of the two spray pipes (130) are connected to a water inlet pipe (131); the other end of the water inlet pipe (131) is connected to a water pump.

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