Centrifugal machine for chemical industry
By designing a scraping mechanism and cleaning mechanism in the centrifuge, the problem of insufficient cleanliness when cleaning the filter slag in the existing centrifuge, it achieves more efficient filter slag shaking and filter membrane cleaning, and improves the effect of centrifugal separation.
Patent Information
- Application Number
- CN202421717884.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-19
AI Technical Summary
When cleaning the filter slag on the filter membrane, existing centrifuges have insufficient cleanliness, which can easily lead to clogging of the filter slag and excessive liquid content of the filter slag.
A centrifuge used in chemical industry is designed, using a scraping mechanism and a cleaning mechanism to scrape most of the filter slags through a scraper, and rub the filter slags through a cleaning brush to reduce the adhesion viscosity of the filter slags and improve the cleanliness of the filter membrane.
Through this device, the cleanliness of the filter membrane can be effectively improved, avoiding incomplete centrifugal separation, ensuring effective shaking of the filter residue and sufficient cleaning of the filter membrane.
Smart Images
Figure CN223010815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifuge equipment, in particular to a centrifuge for chemical industry. Background Technique
[0002] When a part of the existing centrifuge scraper cleans the filter residue on the filter membrane, the cleanliness is insufficient. Even if the filter membrane is shaken, the filter membrane is easily blocked, resulting in too high liquid content in the filter residue. Content of the Utility Model
[0003] In order to facilitate the cleanliness of the filter membrane, the utility model provides a centrifuge for chemical industry.
[0004] The centrifuge for chemical industry provided by the utility model adopts the following technical scheme:
[0005] A centrifuge for chemical industry includes a mechanical module and an electrical module. The mechanical module includes a fixed frame, a container, a positioning system, a cleaning system, and a feeding system. A drum is rotatably connected inside the container. The top of the container is connected with a cover through a hinge. The positioning system and the cleaning system are both fixedly connected to the top of the cover. The cleaning system includes a connecting rod. Scraping mechanisms and cleaning mechanisms are respectively fixedly connected to both sides of the connecting rod. A first motor and a first cylinder are fixedly connected to the top of the cover. An air compressor and a second motor are respectively fixedly connected to the top and inside of the fixed frame. The second motor is drivingly connected to one end of the drum. A liquid discharge pipe and a slag discharge pipe are respectively fixedly connected to the outer wall and the bottom of the container. The electrical module includes a controller. The positioning system, the first motor, the second motor, the first cylinder, and the cleaning mechanism are all in communication connection with the controller.
[0006] By adopting the above technical scheme, most of the filter residue is first scraped out by the scraping mechanism, and then the filter residue is rubbed by the cleaning mechanism to reduce the adhesion viscosity of the filter residue on the filter membrane. Thus, when the filter membrane is shaken, more filter residue can be shaken off, which is beneficial to improving the cleanliness of the filter membrane and avoiding the situation of incomplete centrifugal separation.
[0007] Preferably, both the scraping mechanism and the cleaning mechanism are located inside the drum. The scraping mechanism and the cleaning mechanism both include two limiting rods and a second cylinder. The ends of the two second cylinders are respectively fixedly connected with a bracket and a scraper. A cleaning brush is rotatably connected inside the bracket. One side of each two corresponding limiting rods is fixedly connected to one side of the connecting rod. The inside of the bracket and the inside of the scraper are respectively slidably connected to the outer surfaces of the corresponding two limiting rods.
[0008] Preferably, the end of the output shaft of the first cylinder is fixedly connected to the top of the connecting rod. A displacement sensor is fixedly connected to the cutting edge end of the scraper. A pressure sensor is fixedly connected to the bottom of the cover. An angular velocity sensor is fixedly connected to the inside of the connecting rod.
[0009] By adopting the above technical solution, through two second cylinders, the distances between the scraper and the cleaning brush and the filter membrane are changed. Thus, no matter whether the filter membrane is in contact with the drum or not, the cleaning brush can brush off the filter residues on the surface of the filter membrane. Through the displacement sensor and the angular velocity sensor, the position of the scraper is located, which is convenient for the controller to control the distance between the scraper and the filter membrane to be close or far away.
[0010] Preferably, a filter membrane is fixedly connected to the top of the drum. One side of the filter membrane overlaps on the inner surface of the drum. A plurality of steel wires are fixedly connected to the bottom of the filter membrane. A dust-proof cover is fixedly connected to the bottom of the container. A third cylinder is fixedly connected to the inside of the dust-proof cover. The other ends of the plurality of steel wires are fixedly connected to the end of the third cylinder. The third cylinder, the two second cylinders and the first cylinder are all connected to the air compressor. The displacement sensor, the pressure sensor, the angular velocity sensor, the two second cylinders and the third cylinder are all in communication connection with the controller.
[0011] By adopting the above technical solution, the third cylinder pulls down the steel wires, so that the middle part of the filter membrane is suspended and no longer fits with the drum, shaking off the filter residues. At the same time, since the cylinder drives the steel wires to rotate, the amplitude of the shaking of the filter membrane increases, which is more convenient for shaking off the filter residues, is beneficial to improving the cleanliness of the filter membrane, and the steel wires will not block the passage for the filter residues to pass through.
[0012] Preferably, the positioning system includes a level controller and a touch rod. The two probes of the level controller are respectively fixedly connected to the inner wall of the container and one end of the touch rod. The level controller is in communication connection with the controller.
[0013] By adopting the above technical solution, the two probes are respectively used to detect the height of the liquid and the thickness of the filter residues, so as to avoid the liquid being too high and the filter residues being too thick, which affects the centrifugal efficiency of the centrifuge.
[0014] Preferably, the feeding system includes a feeding pipe and a rotating cover. The top of the cover is rotatably connected to a rotating shaft. The end of the output shaft of the first motor is fixedly connected to one end of the rotating shaft. The other end of the rotating shaft is fixedly connected to the inside of the rotating cover. The bent end of the feeding pipe is located inside the rotating cover.
[0015] By adopting the above technical solution, the rotating cover increases the kinetic energy of the liquid. The rotating rotating cover suspends the feed in different areas of the drum.
[0016] Preferably, a water spraying pipe is fixedly connected to the top of the cover. A plurality of nozzles are fixedly connected to one end of the water spraying pipe.
[0017] By adopting the above technical solution, not only can the thick filter residue attached to the surface of the filter membrane drum be cleaned by the nozzle, but also the cleaning brush can be cleaned.
[0018] Preferably, a nitrogen gas hole and a pressure relief hole are fixedly connected through the top of the cover, and a sight glass lamp is fixedly connected to the top of the cover.
[0019] By adopting the above technical solution, the filter residue can be quickly drained by inputting nitrogen gas, and at the same time, the pressure in the container can be adjusted together with the pressure relief hole. The inside of the container is illuminated by the sight glass lamp, which is convenient for maintaining and repairing the parts inside the container.
[0020] As a technical solution of the present utility model, the provided hardware settings are only for facilitating the cleanliness of the filter membrane on the basis of the hardware facilities. Specifically, how to achieve the cleanliness of the filter membrane is not the technical problem to be solved and the object to be protected by the present utility model. At the same time, the communication methods between devices all adopt existing communication methods, which are not the innovation points of this application.
[0021] In summary, the present utility model has the following beneficial technical effects:
[0022] 1. The device is provided with a second cylinder. Through the two second cylinders, the distance between the scraper and the cleaning brush and the filter membrane is changed. Through the displacement sensor and the angular velocity sensor, the positions of the scraper and the cleaning brush are located, which is convenient for the controller to control the cleaning brush to approach or move away from the filter membrane. Thus, whether the filter membrane is attached to the drum or not, the cleaning brush can brush the filter residue on the surface of the filter membrane, which is beneficial to strengthening the cleaning of the filter membrane;
[0023] 2. The device is provided with a touch rod, a displacement sensor and an angular velocity sensor. The thickness of the filter residue can be obtained through the touch rod to start cleaning. Through the signals of the displacement sensor and the angular velocity sensor, the controller calculates the distance between the current position of the scraper and the filter membrane. Thus, the controller controls the second cylinder to drive the scraper forward to scrape the filter residue. Through the automatic control of the controller, accurate positioning is achieved, and the cleaning is completed quickly, avoiding damaging the filter membrane;
[0024] 3. A steel wire is connected to the bottom of the filter membrane of the device. The third cylinder pulls the steel wire downward, so that the middle part of the filter membrane is suspended and no longer adheres to the drum, shaking off the filter residue. At the same time, since the cylinder drives the steel wire to rotate, the amplitude of the shaking of the filter membrane increases, which is more convenient for shaking off the filter residue, beneficial to improving the cleanliness of the filter membrane, and the steel wire will not block the passage for the filter residue to pass through. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a three-dimensional structural schematic diagram of a centrifuge for chemical industry of the present utility model;
[0026] Figure 2 is the front view of a centrifuge for chemical industry of the present utility model;
[0027] Figure 3 is the top view of a centrifuge for chemical industry of the present utility model;
[0028] Figure 4 is Figure 2 the sectional view along line A-A in;
[0029] Figure 5 is Figure 3 the sectional view along line B-B in;
[0030] Figure 6 is Figure 5 the enlarged schematic view of the local structure at C in.
[0031] Explanation of reference numerals:
[0032] 1, container; 2, drum; 3, cover; 4, motor one; 5, cylinder one;
[0033] 6, scraper; 7, motor two; 8, cylinder two; 9, cleaning brush; 10, cylinder three;
[0034] 11, dust-proof cover; 12, touch rod; 13, water spray pipe; 14, feed pipe;
[0035] 15, rotating cover; 16, nitrogen hole; 17, pressure relief hole; 18, filter membrane. Detailed implementation manners
[0036] The following further elaborates on the present utility model in conjunction with the attached Figure 1-6 drawings.
[0037] An embodiment of the present utility model discloses a centrifuge for chemical industry.
[0038] Referring to Figure 1 , Figure 2 , Figure 4 , Figure 5, including a mechanical module and an electrical module. The mechanical module includes a fixing frame, a container 1, a positioning system, a cleaning system, and a feeding system. Inside the container 1, a rotating drum 2 is rotatably connected. The top of the container 1 is connected to a cover 3 through a hinge. Both the cover 3 and the container 1 are connected with latches. When the cover 3 is attached to the container 1, the latches are locked. When the cover 3 needs to be opened, first open the latches and then flip the cover 3. The positioning system and the cleaning system are both fixedly connected to the top of the cover 3. The cleaning system includes a connecting rod, and on both sides of the connecting rod, a scraping mechanism and a cleaning mechanism are respectively fixedly connected. On the top of the cover 3, a first motor 4 and a first cylinder 5 are fixedly connected. On the top and inside of the fixing frame, an air compressor and a second motor 7 are respectively fixedly connected. The second motor 7 is drivingly connected to one end of the rotating drum 2. The air compressor provides air sources for the first cylinder 5, a second cylinder 8, and a third cylinder 10. On the outer wall and bottom of the container 1, a liquid discharge pipe and a slag discharge pipe are respectively fixedly connected. After centrifugal separation, the filtrate and the filter residue are respectively discharged from the container 1 through the liquid discharge pipe and the slag discharge pipe; the electrical module includes a controller. The positioning system, the first motor 4, the second motor 7, the first cylinder 5, and the cleaning mechanism are all communicatively connected to the controller. The controller can receive and transmit electrical signals, control the opening and closing, operating degree, etc. of the corresponding electrical components, and complete automatic control through the controller to reduce the workload of workers.
[0039] Refer to Figure 4 , Figure 5 , Figure 6 , both the scraping mechanism and the cleaning mechanism are located inside the rotating drum 2. Both the scraping mechanism and the cleaning mechanism include two limiting rods and a second cylinder 8. At the ends of the two second cylinders 8, a bracket and a scraper 6 are respectively fixedly connected. Inside the bracket, a cleaning brush 9 is rotatably connected. The two ends of the cleaning brush 9 are rotatably connected inside the bracket. On one side of each pair of corresponding limiting rods, they are fixedly connected to one side of the connecting rod. Inside the bracket and inside the scraper 6, they are respectively slidably connected to the outer surfaces of the corresponding two limiting rods. The limiting rods enable the scraper 6 and the cleaning brush 9 to move forward and backward along the output direction of the third cylinder 10 without rotation. When the second cylinder 8 drives the scraper 6 and the cleaning brush 9 to move forward in the direction close to the filter membrane 18, the filter residue is scraped off. When the second cylinder 8 drives the scraper 6 and the cleaning brush 9 to move backward in the direction away from the filter membrane 18, the chemical solution raw material continues to be centrifugally separated. After the bottoms of the scraper 6 and the cleaning brush 9 are higher than the top of the rotating cover 15, the feeding pipe 14 continues to feed.
[0040] Refer to Figure 1 , Figure 2 , Figure 3, the end of the output shaft of the first cylinder 5 is fixedly connected to the top of the connecting rod. A displacement sensor is fixedly connected to the blade end of the scraper 6, a pressure sensor is fixedly connected to the bottom of the cover, and an angular velocity sensor is fixedly connected inside the connecting rod. Through the displacement sensor and the angular velocity sensor, the height of the scraper 6 and the cleaning brush 9 and the distance to the filter membrane 18 are judged, so that the controller controls the first cylinder 5 to drive the scraper 6 and the cleaning brush 9 to move up or down, and the third cylinder 10 drives the scraper 6 and the cleaning brush 9 to move closer to or away from the filter membrane 18.
[0041] Refer to Figure 3 , Figure 4 , Figure 5 , a filter membrane 18 is fixedly connected to the top of the rotary drum 2. An empty circle is opened at the bottom of the filter membrane 18. One end of the steel wire is wound in the cavity, and the other end is connected to the output shaft of the third cylinder 10. When the output shaft of the third cylinder 10 moves downward, it drives the middle part of the filter membrane 18 to no longer adhere to the rotary drum 2, and the filter membrane 18 vibrates. When the output shaft of the third cylinder 10 moves upward, the filter membrane 18 is gradually driven by the rotating rotary drum 2 to adhere to the rotary drum 2 again. One side of the filter membrane 18 overlaps on the inner surface of the rotary drum 2. A plurality of steel wires are fixedly connected to the bottom of the filter membrane 18. A dust-proof cover 11 is fixedly connected to the bottom of the container 1. The dust-proof cover 11 protects the third cylinder 10 to prevent the filter residue from falling into the interior of the third cylinder 10 and blocking the third cylinder 10 when the filter residue shakes off. The third cylinder 10 is fixedly connected inside the dust-proof cover 11. The other ends of the plurality of steel wires are all fixedly connected to the end of the third cylinder 10. The third cylinder 10, the two second cylinders 8 and the first cylinder 5 are all connected to the air compressor. The displacement sensor, the pressure sensor, the angular velocity sensor, the two second cylinders 8 and the third cylinder 10 are all communicatively connected to the controller.
[0042] Refer to Figure 4 , the positioning system includes a level controller and a touch rod 12. The two probes of the level controller are respectively fixedly connected to the inner wall of the container 1 and one end of the touch rod 12. The level controller is communicatively connected to the controller. When the thickness of the filter residue is thick enough, it will touch the touch rod 12. The level controller transmits the signal that the touch rod 12 is touched to the controller. The controller controls the solenoid valve of the feed pipe 14 to close and stop feeding. The controller controls the opening of other electrical components and starts to clean the filter residue on the filter membrane 18 until the filter residue is cleaned up and then continues to feed. To prevent the filtrate height from exceeding the height of the rotary drum 2 and re-entering the rotary drum interior, the probe in the level controller that monitors the liquid level is located below the top of the rotary drum 2. When the filtrate reaches the height of the probe, the level controller transmits the liquid level information to the controller. The controller controls the solenoid valve of the feed pipe 14 to close and stop feeding until the liquid level drops for a certain time and then continues to feed.
[0043] Refer to Figure 4 , Figure 5, the feeding system includes a feeding pipe 14 and a rotating cover 15. The top of the cover 3 is rotatably connected to a rotating shaft. The end of the output shaft of the first motor 4 is fixedly connected to one end of the rotating shaft. The first motor 4 drives the rotating shaft to rotate, thereby causing the rotating cover 15 to rotate. Since both the first motor 4 and the second motor 7 are controlled by the controller, the rotation speed of the rotating cover 15 and the rotation speed of the rotating drum 2 can be the same or different. The other end of the rotating shaft is fixedly connected to the inside of the rotating cover 15. The bent end of the feeding pipe 14 is located inside the rotating cover 15. The bent end of the feeding pipe 14 causes the incoming chemical solution raw material to be sprayed onto the filter membrane 18 through the rotating rotating cover 15 for filtration. The rotating rotating drum 2 exerts a centrifugal force to throw the filtered liquid onto the inner wall of the container 1, so that it flows downward and is collected and discharged from the container 1 through the drain pipe.
[0044] Refer to Figure 2 、 Figure 4 , a water spray pipe 13 is fixedly connected to the top of the cover 3. After the water spray pipe 13 is filled with water, it can wash the filter membrane 18, or wash the filter residue on the filter membrane 18. It can also drive the cleaning brush 9 to the path in front of the filter membrane 18 and the water spray, and wash the cleaning brush 9 with water. The water on the cleaning brush 9 enters the filter membrane 18 and finally is discharged through the drain pipe. One end of the water spray pipe 13 is fixedly connected with a plurality of nozzles.
[0045] Refer to Figure 1 、 Figure 3 , a nitrogen hole 16 and a pressure relief hole 17 are fixedly connected through the top of the cover 3. When the filter residue needs to be drained, the nitrogen hole 16 can be used in cooperation with the rotation of the rotating drum 2 to quickly drain the filter residue. At the same time, when the pressure in the cylinder is insufficient, nitrogen is an inert gas. Introducing inert gas increases the air pressure, and the inert gas will not chemically react with the filter residue and filtrate. When the pressure in the container 1 is too strong, a part of the gas is discharged through the pressure relief hole 17 so that the pressure is within the working range of the container 1. A sight hole lamp is fixedly connected to the top of the cover 3. By means of the sight hole lamp to ensure the light source, when opening the manhole of the cover 3 to check the situation inside the container 1, sufficient light source is provided.
[0046] The implementation principle of a centrifuge for chemical industry in an embodiment of the present utility model is as follows:
[0047] 1. The controller starts and turns on the first motor 4 and the second motor 7. The liquid to be centrifuged enters from the feeding pipe 14, passes through the rotating rotating cover 15, hits the filter membrane 18, and then the filter residue and filtrate are separated through the filter membrane 18. The filtrate passes through the through holes on the rotating drum 2 and then is discharged from the drain pipe on the outer surface of the container 1. After the filter residue accumulates to a certain thickness, the filter residue touches the touch rod 12. First, clean water is injected, and the nozzles of the water spray pipe 13 wash the filter residue. Then, nitrogen is introduced into the container 1 to drain the filter residue;
[0048] 2. The rotary drum 2 keeps rotating. The controller starts the first opening cylinder 5 and the second cylinder 8 connected to the scraping blade 6. After the second cylinder 8 drives the scraping blade 6 to move towards the filter residue to a certain position, the first cylinder 5 drives the connecting rod and the scraping blade 6 to move downward. After scraping off a layer of the filter residue, the second cylinder 8 drives the scraping blade 6 to move towards the filter residue to continue to a certain position, and the first cylinder 5 drives the connecting rod and the scraping blade 6 to move upward. This process repeats until the scraping blade 6 is in contact with the filter membrane 18, and then the second cylinder 8 drives the scraping blade 6 to move away from the filter membrane 18.
[0049] 3. The rotary drum 2 keeps rotating. The controller activates the second cylinder 8 connected to the cleaning brush 9. The cleaning brush 9 moves towards the filter membrane 18. After moving up and down once driven by the first cylinder 5 to rub the filter residue, the cleaning brush 9 moves away from the filter membrane 18, and the third cylinder 10 drives the filter membrane 18 to vibrate.
[0050] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. A centrifuge for chemical industry, characterized in that: The invention comprises a mechanical module and an electrical module, wherein the mechanical module comprises a fixed frame, a container (1), a positioning system, a cleaning system, and a feeding system. The interior of the container (1) is rotatably connected to a rotating drum (2). The top of the container (1) is connected to a cover (3) via a hinge. The positioning system and the cleaning system are both fixedly connected to the top of the cover (3). The cleaning system comprises a connecting rod. The two sides of the connecting rod are respectively fixedly connected to a scraping mechanism and a cleaning mechanism. The top of the cover (3) is fixedly connected to a motor 1 (4) and a cylinder 1 (5). The top and the interior of the fixed frame are respectively fixedly connected to an air compressor and a motor 2 (7). The motor 2 (7) is drivingly connected to one end of the rotating drum (2). The outer wall and the bottom of the container (1) are respectively fixedly connected to a liquid discharge pipe and a slag discharge pipe. The electrical module comprises a controller, and the positioning system, motor 1 (4), motor 2 (7), cylinder 1 (5) and cleaning mechanism are all connected to the controller in communication.
2. A centrifuge for chemical industry according to claim 1, characterized in that: The scraping mechanism and the cleaning mechanism are both located inside the rotating drum (2), and both comprise two limit rods and a second cylinder (8), the ends of the two second cylinders (8) are respectively fixedly connected to a bracket and a scraper (6), the interior of the bracket is rotatably connected to a cleaning brush (9), one side of each two corresponding limit rods is fixedly connected to one side of a connecting rod, and the interior of the bracket and the interior of the scraper (6) are respectively slidably connected to the outer surfaces of the corresponding two limit rods.
3. A centrifuge for chemical industry according to claim 2, characterized in that: The end of the output shaft of the cylinder 1 (5) is fixedly connected to the top of the connecting rod, the blade end of the scraper (6) is fixedly connected to a displacement sensor, the bottom of the cover (3) is fixedly connected to a pressure sensor, and the interior of the connecting rod is fixedly connected to an angular velocity sensor.
4. A centrifuge for chemical industry according to claim 3, characterized in that: A filter membrane (18) is fixedly connected to the top of the drum (2), one side of the filter membrane (18) is overlapped on the inner surface of the drum (2), a plurality of steel wires are fixedly connected to the bottom of the filter membrane (18), a dust cover (11) is fixedly connected to the bottom of the container (1), a cylinder three (10) is fixedly connected inside the dust cover (11), and the other ends of the plurality of steel wires are fixedly connected to the ends of the cylinder three (10), the cylinder three (10), the two cylinders two (8) and the cylinder one (5) are all connected to the air compressor, and the displacement sensor, the pressure sensor, the angular velocity sensor, the two cylinders two (8) and the cylinder three (10) are all connected to the controller for communication.
5. A centrifuge for chemical industry according to claim 4, characterized in that: The positioning system comprises a material level controller and a touch rod (12); two probes of the material level controller are respectively fixedly connected to the inner wall of the container (1) and one end of the touch rod (12); and the material level controller is in communication connection with the controller.
6. A centrifuge for chemical industry according to claim 5, characterized in that: The feeding system comprises a feeding pipe (14) and a rotating cover (15); the top of the sealing cover (3) is rotatably connected to a rotating shaft; the end of the output shaft of the motor (4) is fixedly connected to one end of the rotating shaft; the other end of the rotating shaft is fixedly connected to the inside of the rotating cover (15); and the bent end of the feeding pipe (14) is located inside the rotating cover (15).
7. A centrifuge for chemical industry according to claim 6, characterized in that: A water spray pipe (13) is fixedly connected to the top of the sealing cover (3), and one end of the water spray pipe (13) is fixedly connected to a plurality of spray heads.
8. A centrifuge for chemical industry according to claim 7, characterized in that: A nitrogen hole (16) and a pressure relief hole (17) are fixedly connected through the top of the sealing cover (3), and a sight hole lamp is fixedly connected to the top of the sealing cover (3).