Biodiesel lipase recovery centrifugal machine

Abstract

The utility model belongs to the technical field of biodiesel lipase recovery, and particularly relates to a biodiesel lipase recovery centrifugal machine which comprises a horizontal spiral screen centrifugal machine body and a flow gathering bin, the top end of a feeding pipe of the horizontal spiral screen centrifugal machine body is fixedly connected with a communicating pipe, one end of the communicating pipe is fixedly connected with a feeding storage tank, and the other end of the communicating pipe is fixedly connected with a discharging storage tank. An isolation bin is fixedly connected to the inner wall of the feeding storage tank, a feeding notch is formed in the side wall of the feeding storage tank, an upper thin liquid feeding pipe is fixedly connected to the side wall of the horizontal spiral screen centrifugal machine body, a dilution suction pump is installed on the upper thin liquid feeding pipe, and a circulating dilution pipe is installed on the side wall of the upper thin liquid feeding pipe; the upper thin liquid feeding pipe, the dilution suction pump and the circulating dilution pipe are matched to suck low-concentration liquid and convey the low-concentration liquid to the feeding position of the feeding pump, and the low-concentration liquid and the high-concentration liquid are mixed, so that the concentration of the liquid conveyed to the feeding pipe of the horizontal spiral screen centrifuge body can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of biodiesel lipase recovery technology, specifically relating to a biodiesel lipase recovery centrifuge. Background Technology

[0002] In the biodiesel production process, the mixture after the lipase catalytic reaction usually contains biodiesel, glycerol, unreacted oils or methanol, and immobilized lipase particles. To achieve efficient recovery and reuse of lipase, centrifugation technology is widely used. However, due to the viscosity of the mixture and its tendency to settle after standing in the storage tank, a high-concentration lower layer and a low-concentration upper layer are formed, which further increases the concentration of the lower layer. When traditional centrifuges directly transport such layered liquids, the high-concentration part has high viscosity and particle aggregation, which easily clogs the feed pipe, leading to frequent equipment downtime for maintenance and affecting production continuity. Utility Model Content

[0003] This invention provides a biodiesel lipase recovery centrifuge, which can effectively reduce the concentration of liquid conveyed into the feed pipe of the horizontal spiral screen centrifuge body, and can effectively save time while maintaining smooth feeding.

[0004] This utility model provides the following technical solution: a biodiesel lipase recovery centrifuge, comprising a horizontal spiral screen centrifuge body and a convergence chamber. A connecting pipe is fixedly connected to the top end of the feed pipe of the horizontal spiral screen centrifuge body. A feeding storage tank is fixedly connected to one end of the connecting pipe. An isolation chamber is fixedly connected to the inner wall of the feeding storage tank. A feeding notch is provided on the side wall of the feeding storage tank. An upper dilute liquid feeding pipe is fixedly connected to the side wall of the horizontal spiral screen centrifuge body. The other end of the upper dilute liquid feeding pipe extends into the isolation chamber. A dilution suction pump is installed on the upper dilute liquid feeding pipe. A circulating dilution pipe is installed on the side wall of the upper dilute liquid feeding pipe. The input end of the circulating dilution pipe extends into the convergence chamber. A stirring blade is installed inside the isolation chamber.

[0005] A feed pump is installed on the connecting pipe.

[0006] The inner wall of the feeding tank is fixedly connected with a shielding inclined plate, which is located below the upper dilute liquid feeding pipe.

[0007] The upper dilution feed pipe is fixedly connected to a solenoid valve, the circulating dilution pipe is fixedly connected to the solenoid valve, and the solenoid valve is located above the dilution suction pump.

[0008] An electric heating sleeve is fixedly connected to the outer wall of the upper dilute liquid feeding pipe, and the electric heating sleeve is located below the dilution suction pump.

[0009] The bottom end of the stirring blade is fixedly connected to a connecting shaft, which passes through the bottom wall of the feeding tank.

[0010] The top of the feeding tank is fixedly connected to a controller, which is signal-connected to the feeding pump, the dilution suction pump, and the solenoid valve.

[0011] The beneficial effects of this utility model are as follows: By using the upper dilution feeding pipe, the dilution suction pump, and the circulating dilution pipe in conjunction, low-concentration liquid is drawn and transported to the feeding pump inlet position. Through the mixing of low-concentration liquid and high-concentration liquid, the concentration of liquid conveyed into the feeding pipe of the horizontal spiral screen centrifuge body can be effectively reduced, thereby effectively preventing the feeding channel inside the horizontal spiral screen centrifuge body from being blocked, allowing the device to operate smoothly. Furthermore, the isolation chamber separates and intercepts local areas, and can work with the stirring blades to quickly mix and dilute the liquid being conveyed nearby. By using the synchronous feeding and mixing method, there is no need to wait for the liquid to mix before feeding, thereby effectively saving time and improving efficiency while maintaining smooth feeding.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the feeding tank and the upper dilute liquid feeding pipe in this utility model;

[0015] Figure 3 This is a schematic diagram of the isolation chamber in this utility model.

[0016] In the diagram: 1. Horizontal spiral screen centrifuge body; 11. Converging chamber; 2. Connecting pipe; 21. Feed pump; 3. Feed storage tank; 31. Isolation chamber; 32. Feed notch; 33. Baffle plate; 4. Upper dilute liquid feed pipe; 41. Dilution suction pump; 42. Circulating dilution pipe; 43. Solenoid valve; 44. Electric heating jacket; 5. Stirring blades; 51. Connecting shaft; 6. Controller. Detailed Implementation

[0017] Please see Figures 1-3This utility model provides the following technical solution: a biodiesel lipase recovery centrifuge, including a horizontal spiral screen centrifuge body 1 and a flow-gathering chamber 11. A connecting pipe 2 is fixedly connected to the top of the feed pipe of the horizontal spiral screen centrifuge body 1. A feeding storage tank 3 is fixedly connected to one end of the connecting pipe 2. An isolation chamber 31 is fixedly connected to the inner wall of the feeding storage tank 3. A feeding notch 32 is opened on the side wall of the feeding storage tank 3. An upper dilute liquid feeding pipe 4 is fixedly connected to the side wall of the horizontal spiral screen centrifuge body 1. The other end of the upper dilute liquid feeding pipe 4 extends into the isolation chamber 31. A dilution suction pump 41 is installed on the upper dilute liquid feeding pipe 4. A circulating dilution pipe 42 is installed on the side wall of the upper dilute liquid feeding pipe 4. The input end of the circulating dilution pipe 42 extends into the flow-gathering chamber 11. A stirring blade 5 is installed in the isolation chamber 31.

[0018] In this implementation scheme: the mixture to be treated is added to the feeding tank 3. If no sedimentation occurs due to standing or other reasons, the mixture is directly pumped by the feeding pump 21 to the feeding pipe of the horizontal spiral screen centrifuge body 1. The horizontal spiral screen centrifuge body 1 centrifuges and separates the lipase. When sedimentation occurs in the mixture, the upper layer has a low concentration, the lower layer has a high concentration, and the concentration difference between the upper and lower layers is large. While the controller 6 controls the feeding pump 21 to pump the liquid from the feeding tank 3, the dilution pump 41 pumps the lower concentration liquid from the upper layer through the upper dilution feeding pipe 4 and delivers it to the inlet of the connecting pipe 2. The low-concentration liquid and the high-concentration liquid are mixed by the stirring blades 5 to reduce the amount entering the horizontal spiral screen centrifuge body 1. The liquid concentration in the feeding channel effectively prevents blockage of the feeding channel inside the horizontal spiral screen centrifuge body 1, allowing the device to operate smoothly. During the process, the suction power of the feeding pump 21 is greater than that of the dilution suction pump 41. Since the supply of the dilution suction pump 41 cannot meet the requirements of the feeding pump 21, the flow difference is supplied by the high-concentration liquid outside the isolation chamber 31. This allows the high-concentration liquid outside the isolation chamber 31 to enter the isolation chamber 31 through the feed inlet 32, while preventing the low-concentration liquid transported by the upper dilute liquid feeding pipe 4 from being discharged into the outside of the isolation chamber 31 through the feed inlet 32. The isolation chamber 31 separates and intercepts a local area inside the feeding tank 3, and can work with the stirring blades 5 to quickly mix the liquids being transported nearby. Dilution, achieved through simultaneous feeding and mixing, eliminates the need to wait for liquid mixing before feeding, thus saving time and improving efficiency while maintaining smooth feeding. During equipment operation, when the upper layer of low-concentration liquid is completely sucked out, but some high-concentration liquid remains at the bottom of the feeding tank 3, the controller 6 controls the solenoid valve 43 to switch the feed connection path. The dilution suction pump 41 then draws the centrifuged liquid through the circulating dilution pipe 42 and injects it into the isolation chamber 31, completing the dilution of the high-concentration liquid without introducing additional media. When the centrifuged low-concentration liquid is drawn out through the circulating dilution pipe 42, since the concentration of the centrifuged liquid is lower than the concentration of the upper layer of liquid in the feeding tank 3, the control unit hour... The amount of liquid pumped into the storage tank 3 is less than the amount of low-concentration liquid pumped from the upper layer. Since the pump 21 has a larger unit pumping capacity, even if some of the centrifuged low-concentration liquid is re-entered into the storage tank 3, the liquid level in the storage tank 3 will continue to decrease. When the liquid at the bottom of the storage tank 3 is also at a low concentration, the dilution of the liquid at the bottom of the storage tank 3 can be stopped, and the liquid can be directly pumped and transported to the horizontal spiral screen centrifuge body 1. In actual use, the operation of each component can be manually controlled according to the actual situation. Alternatively, a level gauge and concentration sensor can be installed in the storage tank 3 to measure the liquid level and concentration at various points in the storage tank 3 in real time. Based on the detection results, the controller 6 can automatically control the operation of each component of the equipment.The combined use of concentration sensors, level gauges, suction pumps, and control devices can be easily achieved with existing technology.

[0019] A feed pump 21 is installed on the connecting pipe 2; by setting the feed pump 21, the feed can be actively supplied to the connecting pipe 2 and the feeding can be controlled to be stable.

[0020] A baffle plate 33 is fixedly connected to the inner wall of the feeding tank 3. The baffle plate 33 is located below the upper dilute liquid feeding pipe 4. By setting the baffle plate 33, the suction force at the feed end of the upper dilute liquid feeding pipe 4 can be blocked and intercepted, so as to avoid the suction of high-concentration liquid below.

[0021] A solenoid valve 43 is fixedly connected to the upper dilute liquid feeding pipe 4, and the circulating dilution pipe 42 is fixedly connected to the solenoid valve 43. The solenoid valve 43 is located above the dilution suction pump 41. By setting the solenoid valve 43, the connection and adjustment between the upper dilute liquid feeding pipe 4 and the circulating dilution pipe 42 can be facilitated.

[0022] An electric heating jacket 44 is fixedly connected to the outer wall of the upper dilute liquid feeding pipe 4. The electric heating jacket 44 is located below the dilution suction pump 41. By setting the electric heating jacket 44, the low-concentration liquid can be heated, thereby heating the mixed liquid entering the horizontal spiral screen centrifuge body 1 during the mixing process, further reducing the concentration of the mixed liquid entering the horizontal spiral screen centrifuge body 1. The electric heating jacket 44 has a built-in electric heating wire to heat the upper dilute liquid feeding pipe 4, thereby heating the liquid flowing in the upper dilute liquid feeding pipe 4.

[0023] A connecting shaft 51 is fixedly connected to the bottom end of the stirring blade 5, and the connecting shaft 51 passes through the bottom wall of the feeding tank 3. By setting the connecting shaft 51, it is easy to connect the stirring blade 5 to an external drive device. With the help of the external drive device, the stirring blade 5 is driven to rotate to mix low-concentration liquid and high-concentration liquid.

[0024] A controller 6 is fixedly connected to the top of the feeding tank 3. The controller 6 is connected to the feeding pump 21, the dilution suction pump 41, and the solenoid valve 43. The controller 6 is connected to the feeding pump 21, the dilution suction pump 41, and the solenoid valve 43 through a line to realize the transmission of signals.

[0025] The working principle and usage process of this utility model are as follows: The mixture to be treated is added to the feeding tank 3. When no sedimentation occurs due to standing or other reasons, the mixture is directly pumped by the feeding pump 21 to the feeding pipe of the horizontal spiral screen centrifuge body 1. The horizontal spiral screen centrifuge body 1 centrifuges and separates the lipase. When sedimentation occurs in the mixture, the upper layer has a low concentration and the lower layer has a high concentration, and the difference in concentration between the upper and lower layers is large. While the controller 6 controls the feeding pump 21 to pump the liquid in the feeding tank 3, the dilution pump 41 pumps the upper dilution liquid. The feeding pipe 4 draws the low-concentration liquid from the upper layer and delivers it to the inlet of the connecting pipe 2. The low-concentration liquid and the high-concentration liquid are mixed by the stirring blades 5 to reduce the liquid concentration entering the feeding channel of the horizontal spiral screen centrifuge body 1. When the low-concentration liquid in the upper layer is completely drawn out, but there is still some high-concentration liquid at the bottom of the feeding tank 3, the controller 6 controls the solenoid valve 43 to switch the feeding connection path. The dilution suction pump 41 draws the liquid that has been separated by centrifugation through the circulating dilution pipe 42 and injects it into the isolation chamber 31 to dilute the high-concentration liquid.

Claims

1. A biodiesel lipase recovery centrifuge, comprising a horizontal spiral screen centrifuge body (1) and a flow-gathering chamber (11), characterized in that: The top of the feed pipe of the horizontal spiral screen centrifuge body (1) is fixedly connected to a connecting pipe (2). One end of the connecting pipe (2) is fixedly connected to a feeding tank (3). An isolation chamber (31) is fixedly connected to the inner wall of the feeding tank (3). A feeding notch (32) is opened on the side wall of the feeding tank (3). An upper dilute liquid feeding pipe (4) is fixedly connected to the side wall of the horizontal spiral screen centrifuge body (1). The other end of the upper dilute liquid feeding pipe (4) extends into the isolation chamber (31). A dilution suction pump (41) is installed on the upper dilute liquid feeding pipe (4). A circulating dilution pipe (42) is installed on the side wall of the upper dilute liquid feeding pipe (4). The input end of the circulating dilution pipe (42) extends into the convergence chamber (11). A stirring blade (5) is installed in the isolation chamber (31).

2. The biodiesel lipase recovery centrifuge according to claim 1, characterized in that: A feed pump (21) is installed on the connecting pipe (2).

3. A biodiesel lipase recovery centrifuge according to claim 1, characterized in that: The inner wall of the feeding tank (3) is fixedly connected with a shielding inclined plate (33), which is located below the upper dilute liquid feeding pipe (4).

4. A biodiesel lipase recovery centrifuge according to claim 2, characterized in that: A solenoid valve (43) is fixedly connected to the upper dilution feed pipe (4), and the circulating dilution pipe (42) is fixedly connected to the solenoid valve (43). The solenoid valve (43) is located above the dilution suction pump (41).

5. A biodiesel lipase recovery centrifuge according to claim 1, characterized in that: An electric heating sleeve (44) is fixedly connected to the outer wall of the upper dilute liquid feeding pipe (4), and the electric heating sleeve (44) is located below the dilution suction pump (41).

6. A biodiesel lipase recovery centrifuge according to claim 1, characterized in that: The bottom end of the stirring blade (5) is fixedly connected to a connecting shaft (51), which passes through the bottom wall of the feeding tank (3).

7. A biodiesel lipase recovery centrifuge according to claim 4, characterized in that: The top of the feeding tank (3) is fixedly connected to a controller (6), which is signal-connected to the feeding pump (21), the dilution suction pump (41), and the solenoid valve (43).

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