Chemical wastewater filtering device and filtering method

Abstract

The invention relates to the technical field of sewage treatment, in particular to a chemical wastewater filtering device and a filtering method. The device comprises a base, the top of the base is provided with a treatment box, the treatment box is internally provided with a filtering mechanism, the filtering mechanism is rotatably connected with the treatment box, the side, close to a water flow inlet, of the filtering mechanism is provided with a drainage mechanism, and the drainage mechanism is slidably connected with the filtering mechanism; a water inlet pipe and a water outlet are respectively arranged on two sides, far away from each other, of the treatment box; in the chemical wastewater filtering device, the arranged filtering mechanism is used for filtering chemical wastewater flowing through the interior of the treatment box, and the drainage mechanism is used for draining the chemical wastewater. In the rotating process of the filtering mechanism, the filtering mechanism can switch the position scoured by water flow, the drainage mechanism can scrape impurities on the outer surface of the filtering mechanism, and the drainage mechanism can limit the rotating filtering mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a chemical wastewater filtering device and a filtering method. Background Art

[0002] Chemical wastewater refers to industrial wastewater, cooling water, exhaust gas washing water, equipment and site flushing water and other wastewater discharged in chemical production. If these wastewaters are discharged without treatment, they will cause pollution of different properties and degrees in the water body, thereby endangering human health and affecting industrial and agricultural production.

[0003] In the related art, the invention patent with announcement number CN115849534B discloses a chemical wastewater purification device and a method of use. The key points of its technical solution are as follows: the present invention can filter large impurities carried in the wastewater to be purified entering the chemical wastewater purification device by installing a frame and a filter screen. After the chemical wastewater enters the filter box for storage, the output end of the first motor rotates to drive the frame to slide horizontally on the outer wall of the guide rod. When the frame moves, the position of the filter screen is driven to move. The filter screen moves to filter large impurities in the chemical wastewater, thereby achieving the purpose of preliminary filtration of the purified chemical wastewater, thereby effectively reducing the working intensity of the wastewater purification device.

[0004] Although the filter box in the above patent can intercept large particles of impurities such as silt and chemical reaction byproducts in wastewater, the flow rate of wastewater discharged from the water pipe to the filter box is usually too fast. In the process of intercepting impurities in the wastewater, the fixed part of the filter will be washed by the chemical wastewater flow for a long time. As the use time increases, this part is not only easy to be damaged, but also easy to cause impurities to accumulate in the filter (referring to impurities with relatively small particles that can enter the filter mesh). In other words, the equipment needs to be shut down for cleaning every once in a while, which reduces the filtration efficiency of chemical wastewater.

[0005] In view of this, we propose a chemical wastewater filtration device and a filtration method to improve the deficiencies in the prior art. Summary of the invention

[0006] One of the purposes of the present invention is to provide a chemical wastewater filtering device to solve the problems raised in the above-mentioned background technology.

[0007] The present invention aims at the technical problems existing in the prior art and provides a chemical wastewater filtering device to solve the problem that the fixed part of the filtering device in the above-mentioned background technology is eroded for a long time.

[0008] In order to solve the above problems, the technical solution of the present invention is as follows: a chemical wastewater filtering device, comprising a base, a treatment box is provided on the top of the base, a filtering mechanism is provided inside the treatment box, the filtering mechanism is rotatably connected to the treatment box, the filtering mechanism is provided with a drainage mechanism on one side close to the water inlet, and the drainage mechanism is slidably connected to the filtering mechanism; The filtering mechanism is used to filter the chemical wastewater flowing through the interior of the treatment box, and the drainage mechanism is used to drain the chemical wastewater; During the rotation of the filter mechanism, the filter mechanism can change the position that is flushed by the water flow, the drainage mechanism can scrape off impurities on the surface of the filter mechanism, and the drainage mechanism can limit the rotating filter mechanism.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In the chemical wastewater filtering device, the filter mechanism is used to filter the chemical wastewater flowing through the processing box, and the drainage mechanism is used to drain the chemical wastewater. During the rotation of the filter mechanism, the filter mechanism can change the position that is flushed by the water flow, the drainage mechanism can scrape off impurities on the surface of the filter mechanism, and the drainage mechanism can limit the rotating filter mechanism.

[0010] On the basis of the above technical solution, the present invention can also make the following improvements: As a further improvement of the technical solution, a water inlet pipe and a water outlet are respectively provided on two sides away from each other of the processing box.

[0011] As a further improvement of the technical solution, the filtering mechanism includes a filter cartridge, the filter cartridge is provided with a plurality of filter holes, and the shape of the filter holes is a hollow cylinder.

[0012] As a further improvement of the technical solution, the filter hole is rotatably connected to the inner bottom wall of the processing box, and the outer bottom wall of the processing box is provided with a driving motor, and the output shaft of the driving motor is coaxially connected to the bottom of the filter cartridge.

[0013] The beneficial effect of adopting the above-mentioned improvement scheme is that when the chemical wastewater flows through the treatment box, the water first flows into the inside of the filter cartridge from the filter hole close to the side of the water inlet pipe. The process of the chemical wastewater entering the filter cartridge completes the initial filtration of the wastewater, and then the chemical wastewater passes through the filter hole from the inside of the filter cartridge to the outside of the filter cartridge, thereby completing the secondary filtration of the chemical wastewater. The two-time filtration process improves the filtration effect of the chemical wastewater.

[0014] Moreover, when the power of the driving motor is turned on, the driving motor drives the filter cartridge to rotate. That is to say, the part of the outside of the filter cartridge that is washed by the chemical wastewater flow is constantly changing, thereby avoiding the chemical wastewater flow from washing the fixed part of the filter cartridge for a long time, thereby increasing the service life of the filter cartridge.

[0015] As a further improvement of the technical solution, the drainage mechanism includes a pair of symmetrically arranged drainage plates, and both of the two drainage plates are inclined.

[0016] As a further improvement of the technical solution, the distance between the two guide plates gradually increases from the side far away from the water inlet pipe to the side close to the water inlet pipe, and the two guide plates are both slidably connected to the outer wall of the filter cartridge.

[0017] As a further improvement of the present technical solution, the guide plate is provided with a limiting groove on the side close to the filter cartridge, the limiting groove is clamped with the top of the filter cartridge, and the limiting groove is provided with a limiting bolt on the side away from the guide plate, and the limiting bolt is located inside the filter cartridge.

[0018] The beneficial effect of adopting the above-mentioned improvement scheme is that during the rotation of the filter cartridge, impurities attached to the surface of the filter cartridge are scraped off by the drainage plate, while a small amount of impurities inside the filter holes are flushed into the interior of the filter cartridge by the flow of chemical wastewater during the rotation of the filter cartridge.

[0019] Moreover, chemical wastewater may have a high flow rate when flowing in the pipe, and the two V-shaped drainage plates can buffer the speed of the water flow. When the wastewater hits the drainage plate, the inclined surface of the drainage plate will disperse the impact force of the water flow and reduce the flow rate. Moreover, because there are two drainage plates, the water flow collides and buffers each other between the two inclined surfaces, further reducing the flow rate. Just like multiple streams converge into a sloped valley, the speed of the stream will gradually slow down under the buffering of the slopes (drainage plates) on both sides of the valley.

[0020] The second object of the present invention is to provide a filtration method for a chemical wastewater filtration device, comprising the following steps: S1. Introduce the chemical wastewater to be filtered into the treatment box through the water inlet pipe, and then flow out of the treatment box through the water outlet; S2. When the chemical wastewater flows through the treatment box, the filter mechanism performs multi-stage filtration on the chemical wastewater. The rotating filter mechanism can continuously change the position where it is flushed by the sewage flow; S3. Before the chemical wastewater enters the treatment box and is filtered by the filtering mechanism, the wastewater flow will first be guided by the drainage mechanism; S4. During the rotation of the filter mechanism, the drainage mechanism not only scrapes away impurities on the outer wall of the filter mechanism, but also limits the rotating filter mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is a partially cutaway perspective view of the present invention; Figure 3 It is a partially cut-away front view of the present invention; Figure 4 It is a top view of the local structure of the present invention; Figure 5 is a cutaway perspective view of the filtering mechanism of the present invention; Figure 6 It is a cut-away front view of the filtering mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of the drainage mechanism of the present invention; Figure 8 For the present invention Figure 7 The enlarged view of point A in the middle; Fig. 9 The second is a three-dimensional structural diagram of the drainage mechanism of the present invention; Fig.10 It is a left-side structural diagram of the drainage mechanism of the present invention; Fig.11 It is a top view of the drainage mechanism of the present invention.

[0022] The meaning of each number in the figure is: 100, base; 110, treatment box; 120, water inlet pipe; 130, water outlet; 200, filtering mechanism; 210, filtering cartridge; 220, filtering hole; 230, driving motor; 300, drainage mechanism; 310, drainage plate; 320, limiting bolt; 330, limiting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Due to the long-term scouring of chemical wastewater flow, the filtering device (i.e., the filtering mechanism 200 to be described below) will be corroded (chemical wastewater usually contains corrosive substances). The filtering device in this application is configured as a rotatable structure to avoid the problem of long-term corrosion of the filtering device during the process of filtering chemical wastewater.

[0025] See also Figure 1-Figure 4 As shown, the purpose of this embodiment is to provide a chemical wastewater filtering device, including a base 100, a processing box 110 is provided on the top of the base 100, a filtering mechanism 200 is provided inside the processing box 110, the filtering mechanism 200 is rotatably connected to the processing box 110, and the filtering mechanism 200 is provided with a drainage mechanism 300 on one side close to the water inlet, and the drainage mechanism 300 is slidably connected to the filtering mechanism 200; The filtering mechanism 200 is used to filter the chemical wastewater flowing through the interior of the treatment box 110, and the drainage mechanism 300 is used to drain the chemical wastewater; During the rotation of the filter mechanism 200 , the filter mechanism 200 can change the position that is flushed by the water flow, the drainage mechanism 300 can scrape off the impurities on the surface of the filter mechanism 200 , and the drainage mechanism 300 can limit the rotating filter mechanism 200 .

[0026] It should be noted that a water inlet pipe 120 and a water outlet 130 are respectively provided on two sides away from each other of the processing box 110 .

[0027] Working principle: First, the chemical wastewater to be filtered is introduced into the treatment box 110 through the water inlet pipe 120, and then flows out of the treatment box 110 through the water outlet 130; When the chemical wastewater flows through the treatment box 110, the filter mechanism 200 performs multi-stage filtration on the chemical wastewater. The rotating filter mechanism 200 can continuously change the position where it is flushed by the sewage flow. Before the chemical wastewater enters the treatment box 110 and is filtered by the filter mechanism 200, the wastewater flow will first be guided by the drainage mechanism 300; During the rotation of the filter mechanism 200 , the drainage mechanism 300 not only scrapes off the impurities on the outer wall of the filter mechanism 200 , but also limits the rotating filter mechanism 200 .

[0028] Although the filter box disclosed in the above background technology can intercept large particles of impurities such as silt and chemical reaction byproducts in wastewater, the flow rate of wastewater discharged from the water pipe to the filter box is usually too fast. In the process of intercepting impurities in the wastewater, the fixed part of the filter will be washed by the chemical wastewater flow for a long time. With the increase of usage time, this part is not only easy to be damaged (because chemical wastewater usually contains corrosive chemicals), but also easy to cause impurities to accumulate in the filter (referring to impurities with relatively small particles that can enter the mesh of the filter). In other words, the equipment needs to be shut down for cleaning every once in a while, which reduces the filtration efficiency of chemical wastewater.

[0029] like Figure 5 and Figure 6As shown, the filter mechanism 200 includes a filter cartridge 210 , on which a plurality of filter holes 220 are formed, and the filter holes 220 are in the shape of a hollow cylinder.

[0030] The improvement lies in that the filter hole 220 is rotatably connected to the inner bottom wall of the processing box 110 , a driving motor 230 is provided on the outer bottom wall of the processing box 110 , and the output shaft of the driving motor 230 is coaxially connected to the bottom of the filter cartridge 210 .

[0031] That is, when the chemical wastewater flows through the treatment box 110, the water first flows into the filter cartridge 210 from the filter hole 220 near the side of the water inlet pipe 120, and the process of the chemical wastewater entering the filter cartridge 210 completes the initial filtration of the wastewater, and then the chemical wastewater passes through the filter hole 220 from the inside of the filter cartridge 210 to the outside of the filter cartridge 210, thereby completing the secondary filtration of the chemical wastewater. The two-time filtration process improves the filtration effect of the chemical wastewater.

[0032] Moreover, when the power of the driving motor 230 is turned on, the driving motor 230 drives the filter cartridge 210 to rotate. That is to say, the part of the outside of the filter cartridge 210 flushed by the chemical wastewater flow is constantly changing, thereby avoiding the chemical wastewater flow flushing the fixed part of the filter cartridge 210 for a long time, thereby increasing the service life of the filter cartridge 210.

[0033] As the filter cartridge 210 is used for a longer time, impurities tend to accumulate on the side of the filter cartridge 210 close to the water inlet pipe 120 (because this side of the filter cartridge 210 is constantly flushed by the chemical wastewater flow). To prevent excessive accumulation of impurities that may affect the purification efficiency of the filter cartridge 210 for chemical wastewater, a drainage mechanism 300 is provided.

[0034] Combined with the above description of the filter cartridge 210, the following Figure 7-Figure 11 The function of the drainage mechanism 300 is explained. The drainage mechanism 300 includes a pair of symmetrically arranged drainage plates 310. Both drainage plates 310 are inclined.

[0035] It should be noted that the distance between the two guide plates 310 gradually increases from the side far from the water inlet pipe 120 to the side close to the water inlet pipe 120 , and the two guide plates 310 are both slidably connected to the outer wall of the filter cartridge 210 .

[0036] Furthermore, the guide plate 310 is provided with a limiting groove 330 on a side close to the filter cartridge 210 , the limiting groove 330 is clamped with the top of the filter cartridge 210 , and the limiting groove 330 is provided with a limiting bolt 320 on a side away from the guide plate 310 , and the limiting bolt 320 is located inside the filter cartridge 210 .

[0037] That is to say, during the rotation of the filter cartridge 210, impurities attached to the surface of the filter cartridge 210 are scraped off by the drainage plate 310, while a small amount of impurities inside the filter hole 220 are flushed into the interior of the filter cartridge 210 by the flow of chemical wastewater during the rotation of the filter cartridge 210.

[0038] On the basis of the above, the two guide plates 310 arranged in a V shape also have the following functions: (1) Gathering wastewater: Two V-shaped drainage plates 310 are arranged opposite to each other, and the end with a larger opening is used to receive wastewater. Since chemical wastewater may be dispersed or have a large flow range when entering the treatment box 110, this design with a larger opening can effectively collect wastewater. Then, as the drainage plate 310 gradually narrows toward the middle (towards the filter cartridge 210), it gathers the wastewater like a funnel and guides the wastewater to flow toward the filter cartridge 210.

[0039] (2) Precise guidance: The shapes and relative positions of the two guide plates 310 can accurately guide the wastewater to flow toward the filter cartridge 210. They can adjust the flow direction of the wastewater to rush toward the filter cartridge 210 at a suitable angle, ensuring that the wastewater can evenly cover the outer wall of the filter cartridge 210 for filtration. Compared with a single guide plate 310, two guide plates 310 arranged in a V-shape relative to each other can better control the flow direction of the wastewater and avoid the wastewater from flowing sideways near the filter cartridge 210.

[0040] (3) Buffering flow rate: Chemical wastewater may have a high flow rate when flowing in the pipeline. The two V-shaped drainage plates 310 can buffer the speed of the water flow. When the wastewater hits the drainage plate 310, the inclined surface of the drainage plate 310 will disperse the impact force of the water flow and reduce the flow rate. Moreover, since there are two drainage plates 310, the water flow collides and buffers each other between the two inclined surfaces, further reducing the flow rate. Just like multiple streams converge into a sloped valley, the speed of the stream will gradually slow down under the buffering of the slopes on both sides of the valley (drainage plates 310).

[0041] Embodiment 2: This embodiment is based on the content provided in Embodiment 1, and aims to provide a filtering method for a chemical wastewater filtering device, and the specific steps are as follows: S1. Introduce the chemical wastewater to be filtered into the treatment box 110 through the water inlet pipe 120 , and then flow out of the treatment box 110 through the water outlet 130 .

[0042] S2, when the flow of chemical wastewater flows through the treatment box 110, the flow first flows into the inside of the filter cartridge 210 from the filter hole 220 near the side of the water inlet pipe 120, and the process of chemical wastewater entering the filter cartridge 210 completes the preliminary filtration of the wastewater, and then, the chemical wastewater passes through the filter hole 220 from the inside of the filter cartridge 210 to reach the outside of the filter cartridge 210, thereby completing the secondary filtration of the chemical wastewater. The process of two filtrations improves the filtering effect of chemical wastewater. In addition, when the power supply of the driving motor 230 is turned on, the driving motor 230 drives the filter cartridge 210 to rotate, that is, the position of the chemical wastewater flow scouring the outside of the filter cartridge 210 is constantly changing, thereby avoiding the chemical wastewater flow scouring the fixed position of the filter cartridge 210 for a long time, thereby improving the service life of the filter cartridge 210.

[0043] S3. Before the chemical wastewater enters the treatment box 110 and is filtered by the filtering mechanism 200, the wastewater flow will first be guided by the two guide plates 310 arranged in a V shape.

[0044] S4. During the rotation of the filter cartridge 210, impurities attached to the surface of the filter cartridge 210 are scraped off by the drainage plate 310, and a small amount of impurities inside the filter hole 220 are flushed into the interior of the filter cartridge 210 by the flow of the chemical wastewater during the rotation of the filter cartridge 210. At the same time, the ends with larger openings of the two V-shaped drainage plates 310 are used to receive wastewater. Since chemical wastewater may be dispersed or have a large flow range when entering the treatment box 110, this design with a larger opening can effectively collect wastewater. Then, as the drainage plate 310 gradually narrows toward the middle (towards the filter cartridge 210), it gathers the wastewater like a funnel and guides the wastewater to flow toward the filter cartridge 210.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A chemical wastewater filtration device, characterized in that: The invention comprises a base (100), a processing box (110) is provided on the top of the base (100), a filtering mechanism (200) is provided inside the processing box (110), the filtering mechanism (200) is rotatably connected to the processing box (110), a drainage mechanism (300) is provided on a side of the filtering mechanism (200) close to a water inlet, and the drainage mechanism (300) is slidably connected to the filtering mechanism (200); The filtering mechanism (200) is used to filter the chemical wastewater flowing through the interior of the processing box (110), and the drainage mechanism (300) is used to drain the chemical wastewater; During the rotation of the filter mechanism (200), the filter mechanism (200) can change the position that is flushed by the water flow, the drainage mechanism (300) can scrape away impurities on the surface of the filter mechanism (200), and the drainage mechanism (300) can limit the rotating filter mechanism (200).

2. The chemical wastewater filtration device according to claim 1, characterized in that: A water inlet pipe (120) and a water outlet (130) are respectively provided on two separate sides of the processing box (110).

3. The chemical wastewater filtration device according to claim 1, characterized in that: The filtering mechanism (200) comprises a filtering cartridge (210), the filtering cartridge (210) being provided with a plurality of filtering holes (220), the filtering holes (220) being in the shape of a hollow cylinder.

4. The chemical wastewater filtration device according to claim 3, characterized in that: The filter hole (220) is rotatably connected to the inner bottom wall of the processing box (110); the outer bottom wall of the processing box (110) is provided with a driving motor (230); the output shaft of the driving motor (230) is coaxially connected to the bottom of the filter cartridge (210).

5. The chemical wastewater filtration device according to claim 4, characterized in that: The drainage mechanism (300) comprises a pair of symmetrically arranged drainage plates (310), and both of the drainage plates (310) are arranged at an angle.

6. The chemical wastewater filtration device according to claim 5, characterized in that: The distance between the two guide plates (310) gradually increases from the side away from the water inlet pipe (120) to the side close to the water inlet pipe (120), and the two guide plates (310) are both slidably connected to the outer wall of the filter cartridge (210).

7. The chemical wastewater filtration device according to claim 5, characterized in that: The guide plate (310) is provided with a limiting groove (330) on a side close to the filter cartridge (210), the limiting groove (330) being clamped with the top of the filter cartridge (210), and the limiting groove (330) is provided with a limiting bolt (320) on a side away from the guide plate (310), the limiting bolt (320) being located inside the filter cartridge (210).

8. A filtering method for a chemical wastewater filtering device as claimed in any one of claims 2 to 7, characterized in that: The following steps are involved: S1, introducing the chemical wastewater to be filtered into the treatment box (110) through the water inlet pipe (120), and then flowing out of the treatment box (110) through the water outlet (130); S2. When the chemical wastewater flows through the processing box (110), the filtering mechanism (200) performs multi-stage filtering on the chemical wastewater, and the rotating filtering mechanism (200) can continuously change the position where it is flushed by the wastewater flow; S3. Before the chemical wastewater enters the treatment box (110) and is filtered by the filtering mechanism (200), the wastewater flow is first guided by the drainage mechanism (300); S4. During the process of the filter mechanism (200) rotating, the drainage mechanism (300) not only scrapes away impurities on the outer wall of the filter mechanism (200), but also limits the position of the rotating filter mechanism (200).

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