A rotary solid-liquid separation device

Abstract

The application belongs to the technical field of solid-liquid separation, and discloses a rotary solid-liquid separation device, which comprises a rotary separation mechanism provided with a rotating shaft, a first filter screen and a second filter screen. The first filter screen is high in the middle and low at the edge and is located inside the second filter screen. The second filter screen intercepts impurities thrown out by the first filter screen through centrifugal force. The first filter screen moves synchronously with the rotating shaft, and the second filter screen is rotationally connected with the rotating shaft. The application realizes efficient separation of solid impurities and liquid through centrifugal force generated by rotation and filtering and intercepting of the filter screen, realizes recycling of water resources, and improves economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of solid-liquid separation technology, and specifically relates to a rotary solid-liquid separation device. Background Technology

[0002] In the tobacco industry's production process, large amounts of water are generated in steps such as rehydrating tobacco leaves, humidifying, cleaning equipment, and washing workshop floors and equipment. After coming into contact with tobacco materials or the production environment, this water usually contains a certain amount of solid impurities, such as tobacco leaf fragments, tobacco dust, powder, and tiny particles generated by equipment wear.

[0003] Currently, the industry's conventional treatment methods for this type of wastewater are mostly direct discharge or simple sedimentation followed by discharge. This practice not only causes a huge waste of water resources and increases the water costs for enterprises, but also increases the load on subsequent wastewater treatment plants and the pressure on environmental emissions.

[0004] Therefore, a rotary solid-liquid separation device is provided. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a rotary solid-liquid separation device.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A rotary solid-liquid separation device includes a rotary separation mechanism with a rotating shaft, a first filter screen, and a second filter screen. The first filter screen is higher in the middle and lower at the edges and is located inside the second filter screen. The second filter screen intercepts impurities thrown out by the first filter screen by centrifugal force. The first filter screen moves synchronously with the rotating shaft, and the second filter screen is rotatably connected to the rotating shaft.

[0007] This invention achieves the separation of solid impurities and liquids through centrifugal force generated by rotation and filtration interception; Specifically, the wastewater is first poured onto the first filter screen that rotates synchronously with the shaft. Most of the liquid passes through the first filter screen, while solid impurities are intercepted by it. Under the action of centrifugal force, solid impurities and a small amount of liquid are flung away by the first filter screen and stopped after colliding with the second filter screen on the outside. Centrifugal force ensures that solid impurities do not accumulate on the first filter screen, so that the filter mesh will not become clogged and the filtration function will not fail. It also reduces the chance of solid impurities falling through the mesh. The first filter screen is high in the middle and low at the edges, which allows solid impurities in the wastewater to spread out quickly with the water flow, preventing them from being impacted by subsequent wastewater and passing through the mesh. The second filter screen intercepts solid impurities, while a small amount of liquid passes through the mesh of the second filter screen for recycling. In addition, there will be some liquid on the solid impurities and the mesh of the second filter screen. The second filter screen itself rotates rapidly and uses centrifugal force to throw away the liquid, which can improve the recovery rate and reduce the amount of water carried by the solid impurities. In this invention, the second filter screen needs to rotate, but it is not driven by a rotating shaft. This is because, although both the first and second filters screens need to rotate, they require different rotational speeds. If both were driven by a rotating shaft, their required speeds would not be met. Therefore, the first filter screen is driven only by a rotating shaft. In addition, it is necessary to consider that the first filter screen is inside the second filter screen. If the external second filter screen is driven by a rotating shaft, it would be difficult for the internal first filter screen to extend the transmission structure to the outside of the second filter screen without interference.

[0008] As a preferred technical solution of the present invention, the rotary separation mechanism further includes an annular seat disposed on the rotating shaft, wherein a plurality of brackets are circumferentially connected to the annular seat, and the brackets are reinforced with arc-shaped components. The first filter screen has an opening in the center, and passes through the opening to the rotating shaft and connect to the outer surface of the ring seat; The bracket supports the lower edge of the outer ring of the first filter screen.

[0009] The present invention provides an opening at the center of the first filter screen so that the first filter screen can pass through the rotating shaft; the ring seat provides a position for the installation of the bracket one and a position for fixing the first filter screen, and the bracket one supports the first filter screen to prevent it from deforming.

[0010] As a preferred embodiment of the present invention, the rotating shaft is equipped with a first synchronous wheel, the rotating shaft is equipped with a first bearing, and the outer ring of the first bearing is provided with a second synchronous wheel.

[0011] The present invention uses a first synchronous pulley to transmit power to the rotating shaft and the first filter screen, and a first bearing to achieve the rotational connection between the second filter screen and the rotating shaft. The second synchronous pulley transmits power to the second filter screen. Synchronous pulley 2 can be connected to a power source on its own, or it can share a power source with synchronous pulley 1. This can be adapted to the actual needs of the site. Of course, sharing a power source can reduce maintenance and investment costs, while using separate power sources can provide more flexible speed configurations.

[0012] In some optional examples, the outer ring of the bearing is mounted with a coaxial adapter, and the circumference of the adapter is connected to several brackets two. The second filter screen is fixedly connected to the brackets two. The synchronous pulley two is connected to the synchronous pulley four via the synchronous belt two, and the synchronous pulley one is connected to the synchronous pulley three via the synchronous belt one. The synchronous pulley three and the synchronous pulley four are connected to the output shaft of the same rotating power source.

[0013] This invention specifically uses a single rotary power source to simultaneously drive synchronous pulley one and synchronous pulley two. Synchronous pulley three and synchronous pulley four are installed at the output end of the rotary power source, and power is transmitted to synchronous pulley one and synchronous pulley two via belt drive. Because of the speed requirement, this can be achieved by selecting synchronous pulley one and synchronous pulley three with different transmission ratios, and synchronous pulley two and synchronous pulley four with different transmission ratios. The speed of the second filter can be set to be fast, and the speed of the first filter can be set to be slow.

[0014] As a preferred technical solution of the present invention, it further includes a container, which holds filtered water that has passed through a first filter screen and a second filter screen. The container is provided with a slag outlet and a slag guide is installed at the slag outlet. The slag guide is provided with an inclined slag channel and is equipped with a scraper. When the second filter screen is rotating, the stationary scraper scrapes off the solid impurities attached to the inner wall of the second filter screen.

[0015] The container in this invention has the basic function of storing water. In addition, by setting a slag guide, a channel is provided for the discharge of solid impurities from the inner wall of the second filter screen. When the second filter screen rotates, the scraper scrapes off the solid impurities attached to the inner wall of the second filter screen. The solid impurities fall onto the inclined slag channel and are discharged under the action of gravity.

[0016] As a preferred embodiment of the present invention, the lower end of the rotating shaft is equipped with a cleaning shaft via a one-way bearing, and the cleaning shaft is equipped with a side wall cleaning component and a bottom surface cleaning component.

[0017] This invention addresses the issue of container cleaning. Since a rotating separation mechanism needs to be installed above the container, disassembling the mechanism to expose the container's interior for cleaning would be cumbersome and uneconomical. Therefore, a cleaning shaft is connected via a rotating shaft, with sidewall and bottom cleaning components mounted on it. This allows for cleaning of the container's interior. Considering the first filter screen needs to rotate, simultaneous cleaning during filtration would increase the load on the rotational power source and be uneconomical due to water resistance. Therefore, a one-way bearing is specifically designed. During filtration, the cleaning shaft does not rotate; when not filtering, it reverses the rotation, transmitting power to the cleaning shaft, sidewall, and bottom cleaning components for cleaning. The one-way bearing rotates in one direction only and locks in the opposite direction. The sidewall and bottom cleaning components can be customized as needed, such as brushes or scrapers.

[0018] As a preferred technical solution of the present invention, it also includes a water pump, which is connected to a container, and the container is also connected to a vent pipe, a low liquid level sensor and a high liquid level sensor.

[0019] In this invention, the water pump draws water out of the container after the water level reaches a set limit and sends it for recycling; the low liquid level sensor and the high liquid level sensor are used to detect the water level; and the vent pipe is used to drain the water.

[0020] The beneficial effects of this invention are: by using the centrifugal force generated by rotation and the filtration and interception of the filter screen, it achieves efficient separation of solid impurities and liquids, realizes the recycling of water resources, and improves economic benefits. Attached Figure Description

[0021] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the container structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the rotating separation mechanism in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the rotary separation mechanism in an embodiment of the present invention; Figure 5 For the embodiments of the present invention in Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a schematic diagram illustrating the fit between the bracket and the ring seat in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the second filter screen in an embodiment of the present invention; Figure 8This is a schematic diagram of the structure of the first filter screen in an embodiment of the present invention; Figure 9 This is a schematic diagram of the power mechanism in an embodiment of the present invention; Figure 10 This is a schematic diagram illustrating the cooperation between the power mechanism and the rotary separation mechanism in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the cleaning shaft mounting sidewall cleaning component and bottom surface cleaning component in an embodiment of the present invention; The symbols for the main components are explained below: 100. Container; 101. Slag guide; 102. Scraper; 200. Rotary separation mechanism; 201. Rotating shaft; 202. Synchronous pulley one; 203. Synchronous pulley two; 204. Adapter seat; 205. Support two; 206. Second filter screen; 207. Ring seat; 208. Support one; 209. One-way bearing; 210. Cleaning shaft; 211. Side wall cleaning component; 212. Bottom surface cleaning component; 213. First filter screen; 2131. Opening; 300. Power mechanism; 301. Rotary power source; 302. Synchronous pulley three; 303. Synchronous pulley four; 304. Synchronous belt one; 305. Synchronous belt two; 400. Water pump. Detailed Implementation

[0022] The technical solutions of the present invention will be described in detail below with reference to specific embodiments and accompanying drawings. The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the present invention; these descriptions are explanatory and exemplary, and should not be construed as limiting the implementation methods or the scope of protection of the present invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein. Example 1

[0023] like Figures 1-10 As shown, this embodiment provides a rotary solid-liquid separation device, including... The rotary separation mechanism 200 includes a rotating shaft 201, a first filter screen 213, and a second filter screen 206. The first filter screen 213 is higher in the middle and lower at the edges, and is located inside the second filter screen 206. The second filter screen 206 intercepts impurities thrown out by centrifugal force from the first filter screen 213. A synchronous pulley 202 is mounted on the rotating shaft 201. A ring seat 207 is provided on the rotating shaft 201, and several brackets 208 are connected to the circumference of the ring seat 207. The first filter screen 213 has an opening 2131 at its center, and passes through the rotating shaft 201 through the opening 2131 to connect with the outer surface of the ring seat 207. The brackets 208 support the lower edge of the outer ring of the first filter screen 213. The first filter screen 213 moves synchronously with the rotating shaft 201. A bearing 1 is mounted on the rotating shaft 201, and a synchronous pulley 203 is provided on the outer ring of the bearing 1. The outer ring of bearing one is mounted with a coaxial adapter 204, and several brackets two 205 are connected to the circumference of the adapter 204. The second filter screen 206 is fixedly connected to the brackets two 205. The power mechanism 300 includes a first synchronous belt 304, a second synchronous belt 305, a third synchronous pulley 302, and a fourth synchronous pulley 303. The second synchronous pulley 203 is connected to the fourth synchronous pulley 303 via the second synchronous belt 305. The first synchronous pulley 202 is connected to the third synchronous pulley 302 via the first synchronous belt 304. The third synchronous pulley 302 and the fourth synchronous pulley 303 are connected to the output shaft of the same rotary power source 301. The container 100 is used to hold filtered water that has passed through the first filter screen 213 and the second filter screen 206. The container 100 is provided with a slag outlet and a slag guide 101 is installed at the slag outlet. The slag guide 101 is provided with an inclined slag channel and is equipped with a scraper 102. When the second filter screen 206 is in a rotating state, the stationary scraper 102 scrapes off the solid impurities attached to the inner wall of the second filter screen 206. Water pump 400 is connected to container 100.

[0024] In this embodiment, the separation of solid impurities and liquid is achieved through centrifugal force generated by rotation and filtration interception; Specifically, the wastewater is first poured onto the first filter screen 213, which rotates synchronously with the rotating shaft 201. Most of the liquid passes through the first filter screen 213 and enters the container 100. Solid impurities are intercepted by the first filter screen 213. Under the action of centrifugal force, solid impurities and a small amount of liquid are thrown off by the first filter screen 213 and are stopped after colliding with the second filter screen 206 on the outside. Centrifugal force ensures that solid impurities do not accumulate on the first filter screen 213, so that the filter mesh will not be blocked, the filtration function will not fail, and the chance of solid impurities falling through the mesh is reduced. The first filter screen 213 is higher in the middle and lower at the edges, which allows solid impurities in the wastewater to spread out quickly with the water flow, preventing them from being impacted by subsequent wastewater and passing through the mesh. The first filter screen 213 has an opening 2131 in the center so that the first filter screen 213 can pass through the rotating shaft 201. The ring seat 207 provides a position for the installation of the bracket 208 and a position for fixing the first filter screen 213. The bracket 208 supports the first filter screen 213 to prevent it from deforming. The second filter screen 206 intercepts solid impurities, while a small amount of liquid passes through the mesh of the second filter screen 206 for recovery. In addition, there will be some liquid on the solid impurities and the mesh of the second filter screen 206. The second filter screen 206 itself rotates rapidly and uses centrifugal force to throw away the liquid, which can improve the recovery rate and reduce the amount of water carried by the solid impurities. The slag guide 101 provides a channel for the discharge of solid impurities from the inner wall of the second filter screen 206. When the second filter screen 206 rotates, the scraper 102 scrapes off the solid impurities attached to the inner wall of the second filter screen 206. The solid impurities fall onto the inclined slag channel and are discharged under the action of gravity. Among them, the rotary power source 301 drives synchronous pulley one 202 and synchronous pulley two 203 simultaneously. Synchronous pulley three 302 and synchronous pulley four 303 are installed at the output end of the rotary power source 301. Through belt drive, the power is transmitted to synchronous pulley one 202 and synchronous pulley two 203. The rotation of synchronous pulley two 203 can drive the adapter 204 to rotate, and then drive the second filter screen 206 to rotate through the bracket two 205 fixed on the adapter 204. The water pump 400 pumps water out of container 100 after the water level reaches the set limit and sends it for recycling. Example 2

[0025] like Figure 11 As shown, this embodiment provides a rotary solid-liquid separation device. The difference from Embodiment 1 is that a cleaning shaft 210 is mounted on the lower end of the rotating shaft 201 via a one-way bearing 209. The cleaning shaft 210 is equipped with a side wall cleaning component 211 and a bottom surface cleaning component 212. In this embodiment, since a rotating separation mechanism 200 needs to be installed above the container 100, it would be very troublesome and uneconomical to expose the interior of the container 100 for cleaning by disassembling the rotating separation mechanism 200. Therefore, a cleaning shaft 210 is connected via a rotating shaft 201, and a side wall cleaning component 211 and a bottom surface cleaning component 212 are installed on the cleaning shaft 210. This allows for the cleaning of the interior of the container 100. Considering that the first filter screen 213 needs to rotate, if the cleaning is performed simultaneously during filtration... Cleaning would increase the burden on the rotating power source 301 and would not be economical, as it would encounter resistance from the water inside the container 100. Therefore, a one-way bearing 209 is specially designed. During filtration, the cleaning shaft 210 does not rotate. When not filtering, the water inside the container 100 is drained, driving the rotating shaft 201 to reverse, thereby transmitting power to the cleaning shaft 210, the side wall cleaning component 211, and the bottom surface cleaning component 212 to achieve cleaning. The one-way bearing 209 has the characteristic of rotating in the forward direction and locking in the reverse direction, that is, it can only rotate in one direction.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rotary solid-liquid separation device, characterized in that: The rotating separation mechanism (200) includes a rotating shaft (201), a first filter screen (213), and a second filter screen (206). The first filter screen (213) is high in the middle and low at the edges and is located inside the second filter screen (206). The second filter screen (206) intercepts impurities thrown out by the first filter screen (213) by centrifugal force. The first filter screen (213) moves synchronously with the rotating shaft (201), and the second filter screen (206) is rotatably connected to the rotating shaft (201).

2. The rotary solid-liquid separation device according to claim 1, characterized in that: The rotary separation mechanism (200) also includes a ring seat (207) disposed on the rotating shaft (201), and the ring seat (207) is circumferentially connected to several brackets (208). The first filter screen (213) has an opening (2131) in the center, and passes through the rotating shaft (201) through the opening (2131) to connect with the outer surface of the ring seat (207); The bracket (208) supports the lower edge of the outer ring of the first filter (213).

3. The rotary solid-liquid separation device according to claim 2, characterized in that: The brackets (208) are reinforced by arc-shaped components.

4. The rotary solid-liquid separation device according to claim 1, characterized in that: The rotating shaft (201) is equipped with a first synchronous pulley (202), the rotating shaft (201) is equipped with a first bearing, and the outer ring of the first bearing is provided with a second synchronous pulley (203).

5. A rotary solid-liquid separation device according to claim 4, characterized in that: The outer ring of the bearing is mounted with a coaxial adapter (204), and the circumference of the adapter (204) is connected to several brackets (205). The second filter screen (206) is fixedly connected to the brackets (205).

6. The rotary solid-liquid separation device according to claim 5, characterized in that: Synchronous pulley two (203) cooperates with synchronous pulley four (303) through synchronous belt two (305), and synchronous pulley one (202) cooperates with synchronous pulley three (302) through synchronous belt one (304).

7. A rotary solid-liquid separation device according to claim 6, characterized in that: Synchronous pulley three (302) and synchronous pulley four (303) are connected to the output shaft of the same rotary power source (301).

8. The rotary solid-liquid separation device according to claim 1, characterized in that: It also includes a container (100) that holds filtered water passing through a first filter screen (213) and a second filter screen (206). The container (100) is provided with a slag outlet and a slag guide (101) is installed at the slag outlet. The slag guide (101) is provided with an inclined slag channel and is equipped with a scraper (102). When the second filter screen (206) is in a rotating state, the stationary scraper (102) scrapes off the solid impurities attached to the inner wall of the second filter screen (206).

9. A rotary solid-liquid separation device according to claim 1 or 8, characterized in that: The lower end of the rotating shaft (201) is equipped with a cleaning shaft (210) via a one-way bearing (209), and the cleaning shaft (210) is equipped with a side wall cleaning component (211) and a bottom surface cleaning component (212).

10. A rotary solid-liquid separation device according to claim 8, characterized in that: It also includes a water pump (400) connected to a container (100), which is also connected to a vent pipe, a low level sensor and a high level sensor.

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