Solid-liquid separation device and use method thereof

Abstract

The invention provides a solid-liquid separation device. The solid-liquid separation device comprises a rack, an anti-splashing shield, a screen barrel, a material conveying mechanism and a driving mechanism, liquid containing solid matter is conveyed into the screen barrel through the sewage pump, the screen barrel rotates under the driving of the driving mechanism, in the rotating process, the liquid is subjected to gravity and centrifugal force, a liquid part is separated out through the screen on the screen barrel and concentrated into the filtrate pool below the anti-splashing protection cover, and the solid matter part rotates in the mode of being attached to the barrel wall of the screen barrel. When the solid matter passes through the scraping plate, the effect of forward conveying is achieved due to angle deviation of the scraping plate, and finally the fixed matter is discharged from an outlet in one end of the screen barrel, the solid matter needs to be kept attached to the barrel wall of the screen barrel, and therefore the fixed matter can be discharged by increasing the rotating speed of the screen barrel in a matched mode; the limitation requirement of a traditional solid-liquid separator on the rotating speed of the screen barrel in the background technology is overcome, and then the solid-liquid separation device which is high in separation efficiency and capable of automatically conveying solid fertilizer is provided.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and in particular to a solid-liquid separation device and its method of use. Background Technology

[0002] Chinese invention patent CN110054385A discloses a rotary drum screen solid-liquid separator. This invention achieves solid-liquid separation through a rotating drum screen, with spiral blades inside. Gravity allows the solids at the screening point to be conveyed along the spiral blades. However, because this device relies on gravity for solid transport, if the drum screen rotates too fast, the centrifugal force on the solids exceeds gravity, causing them to adhere tightly to the inner wall of the drum screen and preventing them from being properly conveyed by the spiral blades. This limits the drum screen's rotation speed, which in turn affects the wastewater separation efficiency. Therefore, providing a solid-liquid separation device with high separation efficiency and the ability to automatically convey solid fertilizers has become an urgent problem to solve. Summary of the Invention

[0003] (a) Technical problems to be solved To address the aforementioned problems in the prior art, the present invention provides a solid-liquid separation device and its usage method.

[0004] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by the present invention include: A solid-liquid separation device includes a frame, a splash guard, a screen, a conveying mechanism, a drive mechanism, and an air knife; The splash guard is mounted on the frame; The screen barrel is disposed inside the splash guard, and the screen barrel includes a screen cylinder and support components disposed at both ends of the screen cylinder; The support assembly includes a support ring and a support rod; The support ring is coaxially arranged with the screen cylinder, and the support ring is connected to the inner wall of the screen cylinder through a plurality of support rods; The material conveying mechanism includes a connecting shaft, a fixed rod, a connecting rod, and a scraper; The connecting shaft is connected in sequence to the support rings in the two sets of support assemblies via bearings, and both ends of the connecting shaft extend outward and are fixed on the frame. The connecting rod and the connecting shaft are connected by multiple fixed rods; The connecting rod is provided with a plurality of scrapers at equal intervals. The scrapers are inclined and closely attached to the inner wall of the screen barrel, and a material conveying channel is formed between adjacent scrapers. The drive mechanism is connected to the screen barrel and is used to drive the screen barrel to rotate relative to the splash guard. The air knife is installed on the inner wall of the anti-splash cover, and the air outlet of the air knife faces the outer surface of the drum screen and usually extends along the axial direction of the screen barrel.

[0005] Preferably, the drive mechanism includes a drive motor, a drive wheel, a driven wheel, and a timing belt; The drive motor is connected to the drive wheel; The driving pulley is connected to the driven pulley via a timing belt; The drive wheel is connected to the sieve barrel.

[0006] Preferably, the top of the air knife is also provided with an air inlet, and a high-pressure vortex blower is connected to the air inlet of the air knife to provide airflow to the air knife.

[0007] Preferably, the bottom of the splash guard is provided with a filtrate discharge port.

[0008] Preferably, the frame is provided with a recycling tank for collecting solid waste.

[0009] A method of using a solid-liquid separation device includes the following steps: S1: The sewage pump delivers liquid containing solids into the screen bucket; S2: The screen barrel is rotated by a drive mechanism, and the solid-liquid separation of wastewater is achieved by utilizing the rotation of the screen barrel; S3: The drive mechanism increases the rotation speed of the screen barrel, so that the centrifugal force on the solids inside the screen barrel is greater than the gravity, and they stick tightly to the inner wall of the screen barrel. S4: When solid materials pass through the scraper, the scraper's angle shifts, achieving the effect of forward conveying.

[0010] (III) Beneficial Effects The beneficial effects of this invention are as follows: Using the above technical solution, a sewage pump transports liquid containing solids into a screen bucket. Driven by a drive mechanism, the screen bucket rotates. During rotation, the liquid is subjected to gravity and centrifugal force, separating the liquid portion through the screen and concentrating it in the filtrate pool below the anti-splash cover. The solid portion rotates along the wall of the screen bucket. When the solids pass the scraper, the angle of the scraper shifts, achieving a forward conveying effect. Finally, the solids are discharged from one end of the screen bucket. In this application, the solids need to remain in contact with the wall of the screen bucket. Therefore, the discharge of the solids can be achieved by increasing the rotation speed of the screen bucket, overcoming the limitation on the rotation speed of the screen bucket in traditional solid-liquid separators in the prior art. This provides a solid-liquid separation device with high separation efficiency and the ability to automatically convey solid fertilizer. Attached Figure Description

[0011] Figure 1 A schematic diagram of the structure of a novel solid-liquid separation device. Figure 1 ; Figure 2 A schematic diagram of the structure of a novel solid-liquid separation device. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of a novel solid-liquid separation device. Figure 4 This is a schematic diagram of the longitudinal section of a novel solid-liquid separation device.

[0012] [Explanation of Labels in the Attached Image] 1. Rack; 2. Screen barrel; 21. Screen cylinder; 22. Support rod; 23. Support ring; 3. Drive mechanism; 4. Splash guard; 5. Air blade; 6. Material conveying mechanism; 61. Connecting shaft; 62. Fixing rod; 63. Connecting rod; 64. Scraper; 7. Recycling tank. Detailed Implementation

[0013] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Please refer to Figures 1 to 4 The present invention provides a solid-liquid separation device, including a frame 1, a splash guard 4, a screen barrel 2, a material conveying mechanism 6, a drive mechanism 3, and an air knife 5; The splash guard 4 is installed on the frame 1; The screen barrel 2 is disposed inside the anti-splash cover 4. The screen barrel 2 includes a screen cylinder 21 and support components disposed at both ends of the screen cylinder 21. The support assembly includes a support ring 23 and a support rod 22; The support ring 23 is coaxially arranged with the screen cylinder 21, and the support ring 23 is connected to the inner wall of the screen cylinder 21 through a plurality of support rods 22; The material conveying mechanism 6 includes a connecting shaft 61, a fixed rod 62, a connecting rod 63, and a scraper 64; The connecting shaft 61 is connected to the support rings 23 in the two sets of support components in sequence through bearings, and both ends of the connecting shaft 61 extend outward and are fixed on the frame 1. The connecting shaft 61 and the built-in bearings form a bushing structure. The connecting rod 63 is connected to the connecting shaft 61 by a plurality of fixing rods 62; Multiple scrapers 64 are evenly spaced on the connecting rod 63. The scrapers 64 are inclined and closely attached to the inner wall of the screen barrel 2, and a material conveying channel is formed between adjacent scrapers 64. The drive mechanism 3 is connected to the screen barrel 2 and is used to drive the screen barrel 2 to rotate relative to the anti-splash cover 4; The air knife 5 is installed on the inner wall of the anti-splash cover 4. The air outlet of the air knife 5 faces the outer surface of the drum screen and extends along the axial direction of the screen barrel 2. The top of the air knife 5 is also provided with an air inlet. A high-pressure vortex blower is connected to the air inlet of the air knife 5 to provide airflow to the air knife 5. By blowing the surface of the screen barrel 2 with the air knife 5, the screen on the screen barrel 2 is cleaned, thereby reducing the risk of screen blockage.

[0015] In use, a sewage pump pumps liquid containing solids into the screen barrel 2. Driven by the drive mechanism 3, the screen barrel 2 rotates. During rotation, the liquid is subjected to gravity and centrifugal force. The liquid part is separated by the screen on the screen barrel 2 and collected in the filtrate pool below the anti-splash cover 4, while the solid part rotates along the barrel wall of the screen barrel 2. When the solid part passes the scraper 64, the angle of the scraper 64 is offset to achieve the effect of forward conveying. Finally, the solids are discharged from one end of the screen barrel 2. In this application, it is necessary for the solids to remain in contact with the barrel wall of the screen barrel 2. Therefore, the discharge of solids can be achieved by increasing the rotation speed of the screen barrel 2. This overcomes the limitation on the rotation speed of the screen barrel 2 in the traditional solid-liquid separator in the background technology, and thus provides a solid-liquid separation device with high separation efficiency and automatic conveying of solid fertilizer.

[0016] In this embodiment, the drive mechanism 3 includes a drive motor, a drive wheel, a driven wheel, and a timing belt; The drive motor is connected to the drive wheel; The driving pulley is connected to the driven pulley via a timing belt; The drive wheel is connected to the screen barrel 2; The drive motor drives the screen barrel 2 to rotate via the drive wheel, driven wheel and synchronous belt.

[0017] In this embodiment, the bottom of the splash guard 4 is provided with a filtrate discharge port.

[0018] In this embodiment, the frame 1 is provided with a recycling tank 7 for collecting solid waste.

[0019] A method of using a solid-liquid separation device includes the following steps: S1: The sewage pump delivers liquid containing solids into the screen bucket 2; S2: The rotation of the screen barrel 2 is driven by the drive mechanism 3, and the solid-liquid separation of the sewage is achieved by the rotation of the screen barrel 2. S3: The drive mechanism 3 increases the rotation speed of the screen barrel 2, so that the centrifugal force on the solid material in the screen barrel 2 is greater than the gravity, and it sticks tightly to the inner wall of the screen barrel 2. S4: When the solid material passes through the scraper 64, the angle of the scraper 64 is offset, which achieves the effect of forward conveying.

[0020] The working principle of this invention is as follows: The sewage pump pumps the liquid containing solids into the screen barrel 2. Driven by the drive mechanism 3, the screen barrel 2 rotates. During the rotation, the liquid is subjected to gravity and centrifugal force. The liquid part is separated by the screen on the screen barrel 2 and concentrated in the filtrate pool below the anti-splash cover 4. The solid part rotates along the barrel wall of the screen barrel 2. When the solid part passes the scraper 64, the angle of the scraper 64 is offset to achieve the effect of forward conveying. Finally, the solid part is discharged from one end of the screen barrel 2.

[0021] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

[0022] 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 solid-liquid separation device, characterized in that, It includes a frame, splash guard, screen barrel, material conveying mechanism, drive mechanism, and air knife; The splash guard is mounted on the frame; The screen barrel is disposed inside the splash guard, and the screen barrel includes a screen cylinder and support components disposed at both ends of the screen cylinder; The support assembly includes a support ring and a support rod; The support ring is coaxially arranged with the screen cylinder, and the support ring is connected to the inner wall of the screen cylinder through a plurality of support rods; The material conveying mechanism includes a connecting shaft, a fixed rod, a connecting rod, and a scraper; The connecting shaft is connected in sequence to the support rings in the two sets of support assemblies via bearings, and both ends of the connecting shaft extend outward and are fixed on the frame. The connecting rod and the connecting shaft are connected by multiple fixed rods; The connecting rod is provided with a plurality of scrapers at equal intervals. The scrapers are inclined and closely attached to the inner wall of the screen barrel, and a material conveying channel is formed between adjacent scrapers. The drive mechanism is connected to the screen barrel and is used to drive the screen barrel to rotate relative to the splash guard. The air knife is installed on the inner wall of the anti-splash cover, and the air outlet of the air knife faces the outer surface of the drum screen and usually extends along the axial direction of the screen barrel.

2. The solid-liquid separation device according to claim 1, characterized in that, The drive mechanism includes a drive motor, a driving wheel, a driven wheel, and a synchronous belt; The drive motor is connected to the drive wheel; The driving pulley is connected to the driven pulley via a timing belt; The drive wheel is connected to the sieve barrel.

3. The solid-liquid separation device according to claim 1, characterized in that, The top of the air knife is also provided with an air inlet, and a high-pressure vortex blower is connected to the air inlet of the air knife to provide airflow to the air knife.

4. The solid-liquid separation device according to claim 1, characterized in that, The bottom of the splash guard is provided with a filtrate discharge port.

5. A solid-liquid separation device according to claim 1, characterized in that, The frame is equipped with a recycling tank for collecting solid waste.

6. A method of using the solid-liquid separation device according to any one of claims 1-5, characterized in that, Includes the following steps: S1: The sewage pump delivers liquid containing solids into the screen bucket; S2: The screen barrel is rotated by a drive mechanism, and the solid-liquid separation of wastewater is achieved by utilizing the rotation of the screen barrel; S3: The drive mechanism increases the rotation speed of the screen barrel, so that the centrifugal force on the solids inside the screen barrel is greater than the gravity, and they stick tightly to the inner wall of the screen barrel. S4: When solid materials pass through the scraper, the scraper's angle shifts, achieving the effect of forward conveying.

Images