Solid-liquid separation device with filter element backwashing function

Abstract

The invention relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device with a filter element backwashing function, which comprises an upper barrel and a lower barrel, the primary filtering mechanism comprises a first filtering cylinder body, a second filtering cylinder body, a water inlet pipe for communicating the interior of the first filtering cylinder body with the exterior of the upper cylinder body, and a back-flushing water discharging pipe for discharging wastewater out of the upper cylinder body. According to the invention, when backwashing is carried out, wastewater flows into the first filter cylinder through the filter holes in the first filter cylinder and flows out of the first cylinder through the backwashing drain pipe, and impurities adhered to the inner surface of the first filter cylinder can be driven to flow in the wastewater flowing process, so that the backwashing effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation technology, and more specifically to a solid-liquid separation device with a backwashing filter element function. Background Technology

[0002] When performing solid-liquid separation on high-concentration wastewater, the high content of solid impurities can clog the filter screen, so the filter screen needs to be reverse-cleaned.

[0003] Chinese Patent Application No. 202411453225.2 discloses a backwashing solid-liquid separation device, including a horizontally arranged cylinder. An inlet is located above the outer surface of the cylinder, and an outlet is located below the outer surface. Several filter elements are arranged inside the cylinder along a left-right direction, uniformly distributed along the circumference of the cylinder. In use, after the filtrate enters the cylinder, a drive device drives the filter elements to rotate and revolve. Then, a vacuum device evacuates the inside of the filter elements from the right end, drawing the liquid from the filtrate into the interior of the filter elements. Solid particles in the filtrate are adsorbed onto the outer surface of the filter elements. As filtrate is continuously added through the inlet, the liquid is continuously drawn into the interior of the filter elements and discharged from the right end, while solid particles are continuously adsorbed onto the outer surface of the filter elements, achieving continuous solid-liquid separation of the filtrate.

[0004] The Chinese patent with application number 202411453225.2 requires vacuuming to remove solid particles, which is rather cumbersome to use.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a solid-liquid separation device with a backwashing filter element that can effectively solve the above-mentioned technical problems.

[0007] To achieve the objectives of this invention, the following technical solution is adopted: A solid-liquid separation device with a backwash filter element function includes: an upper cylinder and a lower cylinder. The upper cylinder is equipped with a primary filtration mechanism, which includes a first filter cylinder, a second filter cylinder, a water inlet pipe connecting the inside of the first filter cylinder to the outside of the upper cylinder, and a backwash drain pipe for discharging wastewater from the upper cylinder. Filter holes are formed on the first filter cylinder and the second filter cylinder, with the diameter of the filter holes on the second filter cylinder being smaller than the diameter of the filter holes on the first filter cylinder. A third filter cylinder is installed in the lower cylinder. A cleaning element is provided on the outer surface of the second filter cartridge, and a driving component is connected to the cleaning element. The driving component drives the cleaning element to move relative to the outer surface of the second filter cartridge.

[0008] Furthermore: the drive assembly includes a fixed frame, a first gear rotatably mounted on the fixed frame, a second gear meshing with the first gear, and a motor connected to the first gear to drive it to rotate actively.

[0009] Furthermore: a mounting bracket is fixedly installed on the second gear, and a cleaning component is fixedly installed on the mounting bracket, with the cleaning component in contact with the second filter cartridge.

[0010] Furthermore: a third gear is rotatably mounted on the second gear, and a fourth gear is rotatably mounted on the connecting shaft; the third gear meshes with the fourth gear, and the cleaning component is fixedly mounted on the third gear.

[0011] Furthermore: the cleaning component is cylindrical.

[0012] Furthermore, a stirring paddle is fixedly connected to the rotating shaft of the motor.

[0013] Furthermore: the second gear meshes with a gear ring, on which a stirring body is fixedly mounted; the second gear drives the gear ring to rotate, and the gear ring drives the stirring body to rotate.

[0014] Furthermore: the stirring body is composed of a mounting ring and a stirring rod, and the mounting ring is in contact with the support bar.

[0015] Furthermore, a water distribution component is installed on the outside of the third filter cylinder, and a connecting pipe is provided on the water distribution component.

[0016] Furthermore: the water distribution component is fixedly installed on the support plate, the water distribution component is stacked vertically, the water distribution component is provided with water outlet holes, the water outlet holes are arranged longitudinally and evenly distributed on the inner surface of the water outlet component.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a solid-liquid separation device with a backwashing filter element function. When backwashing is performed, wastewater flows through the filter holes on the first filter cylinder into the first filter cylinder and flows out of the first cylinder through the backwash drain pipe. During the flow of wastewater, it can carry away the impurities adhering to the inner surface of the first filter cylinder, thereby achieving the backwashing effect. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the solid-liquid separation device with backwashing filter element function of the present invention.

[0020] Figure 2 This is a cross-sectional view of the solid-liquid separation device with backwashing filter element function of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the solid-liquid separation device with backwashing filter element function of the present invention.

[0022] Figure 4 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0023] Figure 5 for Figure 2 Enlarged diagram of part B.

[0024] Figure 6 This is a schematic diagram of the stirring element of the solid-liquid separation device with backwashing filter element function of the present invention.

[0025] Figure 7 This is a schematic diagram of one embodiment of the cleaning component of the solid-liquid separation device with backwashing filter element function of the present invention.

[0026] Figure 8 for Figure 7 An enlarged schematic diagram of section C.

[0027] Figure 9 This is a schematic diagram of another embodiment of the cleaning component of the solid-liquid separation device with backwashing filter element function of the present invention.

[0028] Figure 10 for Figure 9 An enlarged schematic diagram of part D in the middle.

[0029] In the diagram: 100, upper cylinder; 200, lower cylinder; 300, primary filtration mechanism; 101. First filter cylinder; 102. Second filter cylinder; 103. Water inlet pipe; 104. Backwash drain pipe; 105. Fixing plate; 106. Cleaning component; 107. Drive assembly; 108. Support bar; 10701. Fixing frame; 10702. First gear; 10703. Second gear; 10704. Mounting frame; 10705. Motor; 10706. Third gear; 10707. Fourth gear; 10708. Agitator; 10709. Gear ring; 107010. Agitator body; 107011. Mounting ring; 107012. Agitator rod; 201. Partition plate; 202. Third filter cylinder; 203. Support plate; 204. Water distribution component; 205. Water outlet; 206. Connecting pipe; 207. Discharge pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0032] like Figures 1 to 10 As shown, the solid-liquid separation device with backwashing filter function of the present invention includes: an upper cylinder 100 and a lower cylinder 200. The upper cylinder 100 is used for primary filtration, and the lower cylinder 200 is used for fine filtration, so as to treat the wastewater multiple times and achieve good solid-liquid separation effect.

[0033] The upper cylinder 100 is used for preliminary impurity removal from wastewater. The upper cylinder 100 is equipped with a primary filtration mechanism 300, which includes a first filter cylinder 101, a second filter cylinder 102, a water inlet pipe 103 connecting the inside of the first filter cylinder 101 to the outside of the upper cylinder 100, and a backwash drain pipe 104 for discharging wastewater from the upper cylinder 100. The first filter cylinder 101 and the second filter cylinder 102 are provided with filter holes to filter solid impurities in the wastewater, and the pore diameter of the filter holes on the second filter cylinder 102 is smaller than the pore diameter of the filter holes on the first filter cylinder 101.

[0034] In other words, wastewater enters the interior of the first filter cylinder 101 through the inlet pipe 103, and after being filtered by the first filter cylinder 101, it is filtered by the second filter cylinder 102 and then enters the interior of the second filter cylinder 102. Finally, the wastewater enters the interior of the lower cylinder 200 through the interior of the second filter cylinder 102.

[0035] In this application, a fixing plate 105 is provided, with an upper cylinder 100 above the fixing plate 105 and a lower cylinder 200 below the fixing plate 105. The filter cylinder is installed on the fixing plate 105, that is, the upper cylinder 100 and the lower cylinder 200 are cylinders. For ease of description, this application distinguishes them as an upper cylinder 100 and a lower cylinder 200. An upper end cap is connected to the upper cylinder 100, and a lower end cap is connected to the lower cylinder 200.

[0036] As can be seen from the above description, impurities tend to adhere to the inner surface of the first filter cylinder 101 and the outer surface of the second filter cylinder 102. In order to enable the first filter cylinder 101 and the second filter cylinder 102 to perform continuous and effective filtration, it is necessary to backwash the inner surface of the first filter cylinder 101 and the outer surface of the second filter cylinder 102.

[0037] The backwash drain pipe 104 is disposed inside the first filter cylinder 101. When backwashing is performed, the wastewater flows through the filter holes on the first filter cylinder 101 into the first filter cylinder 101 and flows out of the first cylinder through the backwash drain pipe 104. During the flow of wastewater, it can carry the impurities adhering to the inner surface of the first filter cylinder 101 to flow, thereby playing the role of backwashing.

[0038] A cleaning component 106 is provided on the outer surface of the second filter cylinder 102. A driving component 107 is connected to the cleaning component 106. The driving component 107 drives the cleaning component 106 to move relative to the outer surface of the second filter cylinder 102, thereby cleaning the outer surface of the second filter cylinder 102.

[0039] The drive assembly 107 includes a fixed frame 10701, a first gear 10702 rotatably mounted on the fixed frame 10701, a second gear 10703 meshing with the first gear 10702, and the first gear 10702 driving the second gear 10703 to rotate when it rotates. A mounting bracket 10704 is fixedly mounted on the second gear 10703, and a cleaning component 106 is fixedly mounted on the mounting bracket 10704. The cleaning component 106 contacts the second filter cartridge 102. When the second gear 10703 rotates, it can drive the mounting bracket 10704 to rotate, thereby causing the cleaning component 106 to move relative to the second filter cartridge 102 and cleaning the second filter cartridge 102.

[0040] It should be added here that the second gear 10703 is rotatably connected to the fixed frame 10701 via a connecting shaft. The first gear 10702 is a sun gear, and the second gear 10703 is a planet gear. There are three second gears 10703. The first gear 10702 is connected to a motor 10705 that drives it to rotate actively, so as to clean the second filter cylinder 102.

[0041] However, in actual use, the cleaning component 106 in this solution wears out quickly and is difficult to replace. Therefore, in another embodiment, a third gear 10706 is rotatably mounted on the second gear 10703, and a fourth gear 10707 is rotatably mounted on the connecting shaft; the third gear 10706 meshes with the fourth gear 10707, and the cleaning component 106 is fixedly mounted on the third gear 10706.

[0042] In this embodiment, three third gears 10706 are provided. When the second gear 10703 rotates, it can drive the third gear 10706 to rotate around the fourth gear 10707. Since the third gear 10706 meshes with the fourth gear 10707, the third gear 10706 can rotate, thereby realizing that the cleaning component 106 rotates around the second filter cylinder 102 while also rotating on its own axis, thus changing sliding friction into rolling friction and reducing the wear of the cleaning component 106. In this embodiment, in order to enable the cleaning component 106 to rotate, the cleaning component 106 is cylindrical.

[0043] To improve the backwashing effect, an agitator 10708 is fixedly connected to the shaft of the motor 10705. When the motor 10705 drives the first gear 10702 to rotate, it can synchronously drive the agitator 10708 to rotate. The rotating agitator 10708 can drive the water flow, thereby flushing down the impurities inside the first filter cylinder 101, thus improving the backwashing effect.

[0044] To reduce impurities adhering to the outer surface of the second filter cylinder 102, the second gear 10703 meshes with a gear ring 10709, on which a stirring body 107010 is fixedly installed. The second gear 10703 drives the gear ring 10709 to rotate, and the gear ring 10709 drives the stirring body 107010 to rotate, thereby causing the wastewater in the upper cylinder 100 to flow, reducing impurities adhering to the outer surface of the second filter cylinder 102.

[0045] The upper cylinder 100 is integrally connected to a support bar 108. The stirring body 107010 is composed of a mounting ring 107011 and a stirring rod 107012. The mounting ring 107011 is in contact with the support bar 108, and the support bar 108 provides support for the mounting ring 107011. In order to make the rotation between the mounting ring 107011 and the support bar 108 smoother, ball bearings can be installed on the mounting ring 107011. The fixing bracket 10701 can be fixedly installed on the support bar 108.

[0046] The lower cylinder 200 is equipped with a baffle 201. In this application, since there are three second filter cylinders 102, it is necessary to collect the water from the three second filter cylinders 102 and then filter it again.

[0047] A third filter cylinder 202 is installed inside the lower cylinder 200. The third filter cylinder 202 is used for fine filtration of wastewater. The third filter cylinder 202 is fixedly installed on the support plate 203.

[0048] The third filter cylinder 202 is equipped with a water distribution component 204. Since wastewater is periodically discharged through the backwash drain pipe 104, wastewater filtration will first be concentrated on the support plate 203. That is to say, wastewater filtration will start from the lower part of the third filter cylinder 202. When the water level rises, the upper part of the third filter cylinder 202 can be filtered. This will result in different usage conditions for the third filter cylinder 202 and will shorten the service life of the third filter cylinder 202.

[0049] In this application, the water distribution component 204 is a hollow cylinder that covers the outside of the third filter cylinder 202. The water distribution component 204 is fixedly installed on the support plate 203. The water distribution component 204 is stacked vertically. The water distribution component 204 is provided with water outlet holes 205. The water outlet holes 205 are arranged longitudinally and evenly distributed on the inner surface of the water outlet component. The water distribution component 204 is provided with a connecting pipe 206, which is fixedly connected to the partition plate 201.

[0050] It should be noted that the connecting pipe 206 is a variable diameter pipe, with the inner diameter decreasing from large to small, thereby controlling the water flow to enter multiple water distribution components 204 respectively.

[0051] The support plate 203 is connected to a discharge pipe 207, and the water filtered by the third filter cylinder 202 is discharged from the discharge pipe 207.

[0052] In this application, wastewater enters the interior of the first filter cylinder 101 through the inlet pipe 103, and after being filtered by the first filter cylinder 101, it is filtered by the second filter cylinder 102 before entering the interior of the second filter cylinder 102. Both the first filter cylinder 101 and the second filter cylinder 102 are made of stainless steel filter mesh.

[0053] When cleaning is required, the motor 10705 drives the first gear 10702 to rotate, causing the cleaning component 106 to move relative to the outer surface of the second filter cylinder 102, thereby cleaning the outer surface of the second filter cylinder 102. At the same time, the motor 10705 synchronously drives the stirring paddle 10708 to rotate, and the rotating stirring paddle 10708 can drive the water flow, thereby flushing down the impurities inside the first filter cylinder 101. Moreover, it can also drive the stirring body 107010 to rotate, thereby driving the wastewater in the upper cylinder 100 to flow, reducing the amount of impurities adhering to the outer surface of the second filter cylinder 102. That is to say, in use, a solenoid valve can be installed on the connecting pipe 206 to control the water flow, so that the water flow accumulates in the upper cylinder 100, and then the motor 10705 is started, and the backwash drain pipe 104 is opened at the same time to achieve backwashing.

[0054] The third filter cylinder 202 is made of activated carbon filter screen and needs to be replaced after use. By setting water distribution component 204, wastewater is directed to various parts of the third filter cylinder 202, which makes the service life of the third filter cylinder 202 long and avoids scrapping caused by long-term use in a single position.

[0055] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A solid-liquid separation device having a backwash filter function, characterized by: Include: Upper cylinder (100) and lower cylinder (200), the upper cylinder (100) is internally provided with primary filter mechanism (300), the primary filter mechanism (300) includes first filter cylinder (101), second filter cylinder (102), the water inlet pipe (103) for communicating the inside of the first filter cylinder (101) with the outside of the upper cylinder (100) and the backflush drain pipe (104) for discharging waste water from the upper cylinder (100);The first filter cylinder (101) and the second filter cylinder (102) are provided with filter holes, the filter hole diameter on the second filter cylinder (102) is less than the filter hole diameter of the first filter cylinder (101);The third filter cylinder (202) is installed in the lower cylinder (200); The outer surface of the second filter cylinder (102) is provided with a cleaning element (106), the cleaning element (106) is connected with a driving assembly (107), and the driving assembly (107) drives the cleaning element (106) to move relative to the outer surface of the second filter cylinder (102).

2. The solid-liquid separation device having a backwash filter function according to claim 1, wherein: The driving assembly (107) includes a fixed frame (10701), a first gear (10702) rotatably installed on the fixed frame (10701), a second gear (10703) engaged with the first gear (10702), and a motor (10705) connected with the first gear (10702) to drive the first gear (10702) to rotate actively.

3. The solid-liquid separation device having a backwash filter function according to claim 2, wherein: The mounting bracket (10704) is fixedly installed on the second gear (10703), and the cleaning element (106) is fixedly installed on the mounting bracket (10704), and the cleaning element (106) is in contact with the second filter cylinder (102).

4. The solid-liquid separation device having a backwash filter function according to claim 2, wherein: The third gear (10706) is rotatably installed on the second gear (10703), and the fourth gear (10707) is rotatably installed on the connecting shaft;The third gear (10706) is engaged with the fourth gear (10707), and the cleaning element (106) is fixedly installed on the third gear (10706).

5. The solid-liquid separation device having a backwash filter function according to claim 4, wherein: The cleaning element (106) is columnar.

6. The solid-liquid separation device having a backwashable filter element function according to claim 2, wherein: The rotating shaft of the motor (10705) is fixedly connected with the stirring paddle (10708).

7. The solid-liquid separation device having a backwashable filter element function according to claim 2, characterized by: The second gear (10703) is engaged with a gear ring (10709), the gear ring (10709) is fixedly installed on the stirring body (107010), the second gear (10703) drives the gear ring (10709) to rotate, and the gear ring (10709) drives the stirring body (107010) to rotate.

8. The solid-liquid separation device having a backwashable filter element function according to claim 7, characterized by: The stirring body (107010) is composed of the mounting ring (107011) and the stirring rod (107012), and the mounting ring (107011) is in contact with the supporting strip (108).

9. The solid-liquid separation device having a backwashable filter element function according to claim 1, wherein: The third filter cylinder (202) is externally provided with a water distribution element (204), and the water distribution element (204) is provided with a connecting pipe (206).

10. The solid-liquid separation device having a backwashable filter element function according to claim 9, wherein: The water distribution part (204) is fixedly installed on the support plate (203), the water distribution part (204) is arranged in a stack from top to bottom, the water distribution part (204) is provided with water outlet holes (205), the water outlet holes (205) are arranged longitudinally and uniformly distributed on the inner surface of the water distribution part.

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